Screen apparatus

Abstract

A looped tension member is disposed in a Z-axis direction, and an inside of a slidable frame is divided into first and second storage portions for respectively storing first and second guides at opposite sides in the X-axis direction. The first and second storage portions allow the tension member to pass, and direction changing members on which the tension member is suspended are provided in opposite end portions of the slidable frame in the Z-axis direction. One of the direction changing members is disposed through a supporting member at one end portion in the Z-axis direction of the first storage portion, relieving pieces extending in the Z-axis direction and opposing each other in a Y-axis direction are provided with the supporting member, and each of the relieving pieces contacts needle parts of screen retaining members and causes the needle parts to bend away from the supporting member.

Claims

1. A screen apparatus, in which a screen that can be freely expanded and stored is provided, and an expansion and storage direction of the screen is defined as an X-axis direction among three orthogonal axes comprising the X-axis, a Y-axis, and a Z-axis, the X-axis direction and a Z-axis direction each have first and second opposite sides, the screen has first and second ends in the X-axis direction and first and second end portions in the Z-axis direction, the first side in the X-axis direction is defined as corresponding to the first end of the screen in the X-axis direction, the second side in the X-axis direction is defined as corresponding to the second end of the screen in the X-axis direction, the first side in the Z-axis direction is defined as corresponding to the first end portion of the screen in the Z-axis direction, and the second side in the Z-axis direction is defined as corresponding to the second end portion of the screen in the Z-axis direction, the screen apparatus comprising: a pair of frames, consisting of a first frame and a second frame, at least one of which is a slidable frame configured to slide in the X-axis direction, the first and second frames being longitudinal in the Z-axis direction and hollow, and being disposed opposite to each other in the X-axis direction, each of the first and second frames having first and second end portions in the Z-axis direction, each first end portion of the first and second frames being on the first side in the Z-axis direction, and each second end portion of the first and second frame being on the second side in the Z-axis direction; a first guide and a second guide each having first and second ends, one of the first and second ends of each of the first and second guides being a free end, the first guide and the second guide being drawn from an inside of the at least one slidable frame when the at least one slidable frame is slid to the first side in the X-axis direction and being stored in the inside of the at least one slidable frame when the at least one slidable frame is slid to the second side in the X-axis direction; and a tension member stored in the inside of the at least one slidable frame and connecting the free end of the first guide and the free end of the second guide, wherein the first end of the screen in the X-axis direction is fixed to the first frame and the second end of the screen in the X-axis direction is fixed to the second frame, a portion of the first guide, which is drawn from the inside of the at least one slidable frame, is configured to extend linearly in the X-axis direction between the second end portion of the first frame in the Z-axis direction and the second end portion of the second frame in the Z-axis direction, and a portion of the second guide, which is drawn from the inside of the at least one slidable frame, is configured to extend linearly in the X-axis direction between the first end portion of the first frame in the Z-axis direction and the first end portion of the second frame in the Z-axis direction, wherein the first guide is formed by connecting a plurality of first guide units, each of the first guide units including a pair of side walls disposed opposite to each other in the Y-axis direction when the first guide is drawn from the inside of the at least one slidable frame, and a bottom wall connecting both of the side walls, each side wall having first and second end parts in the X-axis direction, wherein one of two adjacent first guide units of the plurality of first guide units is pivotally supported by another of two adjacent first guide units of the plurality of first guide units, whereby the first guide not only bends to the first side in the Z-axis direction but also maintains linearity in the X-axis direction, and the second end portion in the Z-axis direction of the expanded screen is inserted between both of the side walls of each of the first guide units in the portion of the first guide, which is drawn from the inside of the at least one slidable frame, wherein a pin extending outward from each of the side walls is provided at the first end part on the first side in the X-axis direction of each of the side walls of each of the first guide units, and an opening is defined in the second end part on the second side in the X-axis direction of both each of the side walls of each of the first guide units, the two adjacent first guide units being connected by fitting, with clearance, each of the pins of the other of the two adjacent first guide units in each of the openings, respectively, of the one of the two adjacent first guide units, each of the pins forming a pivot, and each of the first guide units being pivotally movable, wherein each side wall of each of the first guide units includes a rail part provided at an inner side part of the side wall, the rail part extending along an imaginary line that connects a pivot center of each of the first guide units in a connecting direction, and a supporting piece protruding inwardly from the side wall and provided at one end edge part of the side wall, the supporting piece being disposed further from the bottom wall than the rail part in the Z-axis direction, wherein screen retaining members are respectively detachably attached to inner sides of the side walls of each of the first guide units, each screen retaining member having a plurality of needle parts aligned at intervals and attached to a longitudinal base that is bendable in a pivotal moving direction of each of the first guide units, wherein in an attached state of each of the screen retaining members, the longitudinal base is supported between one of the rail parts and one of the supporting pieces of each of the first guide units, and all of the needle parts protrude inwardly from both of the side walls of each of the first guide units, and wherein when the first guide is drawn to the second side in the X-axis direction accompanying sliding of the at least one slidable frame to the first side in the X-axis direction, the needle parts of each of the screen retaining members stab through the first end portion of the screen in the Z-axis direction, which is inserted between both of the side walls of each of the first guide units in the drawn portion of the first guide, whereby slipping out of the screen from the drawn portion of the first guide is suppressed, and when the first guide is stored in the inside of the at least one slidable frame accompanying sliding of the at least one slidable frame to the second side in the X-axis direction, the needle parts of each of the screen retaining members slip out of the first end portion of the screen in the Z-axis direction, wherein: the tension member is formed into a loop and is disposed in the Z-axis direction; the inside of the at least one slidable frame is divided into a first storage portion for storing the first guide and a second storage portion for storing the second guide, the first storage portion being disposed farther toward the first side in the X-axis direction than the second storage portion, and both the first storage portion and the second storage portion allow the tension member to pass through; first and second direction changing members on which the tension member is suspended and which cause a direction of the tension member to change in the Z-axis direction are provided in the inside of the at least one slidable frame, the first direction changing member being arranged in the first end portion of the at least one slidable frame in the Z-axis direction and the second direction changing member being arranged in the second end portion of the at least one slidable frame in the Z axis-direction, a supporting member for supporting the second direction changing member is provided in the inside of the at least one slidable frame at the second end portion of the at least one slidable frame in the Z-axis direction, and the second direction changing member is disposed with a gap between tip ends in a protrusion direction of the needle parts of each of the screen retaining members attached to each of the first guide units of the first guide; and a pair of relieving pieces extending in the Z-axis direction and opposing each other in the Y-axis direction are provided with the supporting member, and the relieving pieces are configured to come into contact with the needle parts of the screen retaining members attached to the inner sides of the side walls of each of the first guide units, respectively, and to bend the needle parts so as to move away from the supporting member in the Y-axis direction when the first guide is drawn from and stored in the first storage portion.

2. The screen apparatus as claimed in claim 1, wherein; the supporting member includes a fixing part fixed in the inside of the at least one slidable frame at the second end portion of the at least one slidable frame in the Z-axis direction, and a supporting part in which the second direction changing member is positioned, the supporting part being is disposed farther toward the first side in the X-axis direction than the fixing part; each of the relieving pieces includes a first relieving part protruding from the supporting part toward the first side in the Z-axis direction and a second relieving part disposed more outwardly from both of the relieving pieces than the first relieving part; and the first relieving part has a first slope linearly inclined toward the first side in the X-axis direction and the second side in the Z-axis direction, the first slope being at a side surface of the first relieving part on the first one side in the X-axis direction, and the second relieving part has a second slope linearly inclined toward the second side in the X-axis direction and the second side in the Z-axis direction at an end surface of the first relieving part that is located on the second side in the Z-axis direction.

3. The screen apparatus as claimed in claim 1, wherein: the supporting member includes a fixing part fixed in the inside of the at least one slidable frame at the second end portion of the at least one slidable frame in the Z-axis direction and a supporting part in which the second direction changing member is positioned, the supporting part being disposed farther toward the first side in the X-axis direction than the fixing part; each of the relieving pieces includes a first relieving part protruding from the supporting part toward the first side in the Z-axis direction, and a third relieving part protruding from the supporting part toward the second side in the Z-axis direction; and the first relieving part has a first slope linearly inclined toward the first side in the X-axis direction and the second side in the Z-axis direction, the first slope being at a side surface of the first relieving part on the first side in the X-axis direction, and an end face of the third relieving part on the second side in the Z-axis direction is formed as a curved surface convexly curved from the X-axis direction to the Z-axis direction.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a partially notched cross section of an embodiment of a screen apparatus of the invention.

(2) FIG. 2 is a main perspective view of a first guide as an embodiment of the screen apparatus shown in FIG. 1.

(3) FIG. 3A is a side view of the first guide shown in FIG. 2 and FIG. 3B is a front view of the first guide shown in FIG. 2.

(4) FIG. 4A is a side view, FIG. 4B is a plan view, FIG. 4C is a bottom view, and FIG. 4D is a front view, of the first guide unit shown in FIGS. 2, 3A and 3B.

(5) FIG. 5A is a side view and FIG. 5B is a front view, of a screen retaining member shown in FIGS. 2, 3A and 3B.

(6) FIG. 6 is a notched side view of a main portion in a bent state of the screen retaining member when the first guide shown in FIGS. 2, 3A and 3B bends.

(7) FIG. 7 is a perspective view of a lower block constituting a lower portion of a first frame of the screen apparatus shown in FIG. 1.

(8) FIG. 8 is a disassembled perspective view of the lower block shown in the FIG. 7.

(9) FIG. 9 is a sectional view of the lower block shown in FIG. 7.

(10) FIG. 10 is a main plan view that shows a bent state of needle-like parts of each of the screen retaining members by a relieving piece shown in FIG. 7 when the first guide is stored in a first storage portion as shown in FIGS. 2, 3A and 3B.

(11) FIG. 11 is a side view showing another embodiment of the relieving piece of a supporting member shown in FIG. 8.

DESCRIPTION OF EMBODIMENTS

(12) Referring to FIG. 1, a screen apparatus SD of the embodiment includes a screen 1 that can be freely expanded and stored, is installed in an opening such as a window frame, door frame, and the like, and the opening is opened and closed in a horizontal direction by the screen 1, for example. In other words, in the screen apparatus SD, an expansion and storage direction is defined as an X-axis direction in orthogonal three axes including the X-axis, a Y-axis, and a Z-axis, the X-axis direction corresponds to the horizontal direction, i.e., a left-right direction in FIG. 1, and the Z-axis direction corresponds to a vertical direction, i.e., an top-bottom direction in FIG. 1. Accordingly, in the following one side in the X-axis direction is defined to be left and the other side in the X-axis direction is defined to be right, and one side in the Z-axis direction is defined to be bottom and the other side in the Z-axis direction is defined to be top.

(13) The screen apparatus SD includes a first frame 2 that is slidable in the left-right direction of the opening, is longitudinal in the top-bottom direction, and is hollow, and a second frame 3 that is disposed opposite to the first frame 2 in the left-right direction, is fixed to a right end portion of the above-mentioned opening, is longitudinal in the top-bottom direction, and is hollow. A pair of frames consist of the first frame 2 and the second frame 3. A left end of the screen 1 is fixed to the first frame 2 and a right end of the screen 1 is fixed to the second frame 3. Specifically, the left end of the screen 1 is fixed to a right end portion of the first frame 2 and the right end of the screen 1 is fixed to a portion in the top-bottom direction of an outer peripheral part of a roller pipe 31 that is longitudinal in the top-bottom direction, is hollow, and is rotatably stored in an inside of the second frame 3. When a closing operation causes the first frame 2 to slide leftward by a user of the screen apparatus SD, the screen 1 is unwound from the outer peripheral part of the roller pipe 31 and is expanded in the opening and when the closing operation by the user is stopped, the screen 1 is wound around the outer peripheral part of the roller pipe 31 and is stored in the inside of the second frame 3. At this time, the first frame 2 automatically slides rightward and when a right end of the first frame 2 comes into contact with a left end of the second frame 3, the sliding of the first frame 2 rightward is automatically stopped.

(14) In order to realize such the automatic storage of the screen 1 in the inside of the second frame 3, a coil spring 31a is built in the inside of the roller pipe 31. When the first frame 2 is slid leftward, the coil spring 31a rotates forward in the inside of the second frame 3 and when the screen 1 is unwound from the outer peripheral part of the roller pipe 31, the coil spring 31a is twisted around a rotation axis of the roller pipe 31, and an elastic force is generated and accumulated. When the user stops a closing operation, the accumulated elastic force is released, the roller pipe 31 reverses in the inside of the second frame 3, and the screen 1 is wound around the outer periphery of the roller pipe 31.

(15) Additionally, in order to smoothly realize the sliding in left-right direction of the first frame 2, the screen apparatus SD includes an upper rail 4 and a lower rail 5. The upper rail 4 is provided at an upper end portion of the opening and the lower rail 5 is provided at a lower end of the opening. The upper rail 4 is a hollow member of which a section in the top-bottom direction is U-shaped and an upper end portion of the first frame 2 is inserted into an inside of the upper rail 4. The lower rail 5 is a longitudinal and linear member in the left-right direction. Wheels, not shown, are provided at a lower end portion of the first frame 2 and roll on the lower rail 5. Since the siding in the left-right direction of the first frame 2 is guided by the upper rail 4 and the lower rail 5, the sliding of the first frame 2 in the left-right direction is smoothly realized.

(16) Further, the screen apparatus SD includes a first guide 6 and a second guide 7 that are drawn from the inside of the first frame 2 when the first frame 2 is slid leftward, and which are stored in the inside of the first frame 2 when the first frame 2 is slid rightward. The first guide 6 and the second guide 7 have free ends 61, 71 at an end, respectively, portions 62, 72 drawn from the inside of the first frame 2 maintain linearity in the left-right direction, and the portion 62 extends in the left-right direction between the lower end portions of the first frame 2 and the second frame 3 as the pair of the frames. Similarly, the portion 72 extends in the left-right direction between the upper end portions of the first frame 2 and second frame 3. Furthermore, the screen apparatus SD includes a tension member 8 that is stored in the inside of the first frame 2 and connects the free ends 61, 71 of the first guide 6 and the second guide 7. The tension member 8 is formed into a non-crossing loop and is disposed in the top-bottom direction. The loop of the tension member 8 may be a crossing loop.

(17) Referring to FIG. 2, FIG. 3A, FIG. 3B, FIG. 4A, FIG. 4B, FIG. 4C, and FIG. 4D, the first guide 6 is formed by connecting of a plurality of first guide units 63. Each of the first guide units 63 includes a pair of side walls 63a, 63a shown in FIG. 2, which are disposed opposite to each other in the Y-axis direction, and a bottom wall 63b connecting both of the side walls 63a, 63a. In the first guide 6, one of two adjacent first guide units 63, 63 is pivotally supported by the other. The first guide 6 maintains linearity in the left-right direction and upwardly bends due to pivotal support. Additionally, upper left end parts and upper right end parts of both of the side walls 63a, 63a of each of the first guide units 63 correspond to an upper end portion of the portion 62 of the first guide 6 drawn from the inside of the first guide 6. A pair of pins 63c, 63c directing outward in an opposite direction of both of the side walls 63a, 63a are provided with the upper left end parts, and a pair of openings 63d, 63d are opened in the upper right end parts.

(18) Specifically, a first recessed part 63a.sub.1 recessed inward in the opposite direction of both of the side walls 63a, 63a is formed at a peripheral part of each of the pins 63c in each of the side walls 63a of each of the first guide units 63. A length of each of the pins 63c is equal to a depth of the first recessed part 63a.sub.1, and an outer diameter of each of the pins 63c and an inner diameter of each of the openings 63d are of such a size that each of the pins 63c can be loosely fitted in each of the openings 63d. Additionally, a first notched part 63a.sub.2 is formed by notching a peripheral part of each of the openings 63d with leaving an upper end edge part of each of the side walls 63a and the upper end edge part becomes a protruding piece 63e extending rightward. Further, a hill part 63f rising upwardly is provided with a right and lower end portion of the first recessed part 63a.sub.1. Furthermore, a second recessed part 63a.sub.3 with the same depth as the one of the first recessed part 63a.sub.1 is formed at a portion positioned at a lower end portion of each of the side walls 63a and below the first recessed part 63a.sub.1. Then, the bottom wall 63b is disposed at a position corresponding to a lower end portion of the second recessed part 63a.sub.3 of both of the side walls 63a, 63a in each of the first guide units 63, and has a length from a left end of the second recessed part 63a.sub.3 to a left and lower end of the first notched part 63a.sub.2.

(19) In the first guide 6, the two adjacent first guide units 63, 63 are connected by inserting the left end parts of both of the side walls 63a, 63a of the other of the first guide units 63 into an inner side of the right end parts of one of the first guide units 63 in the opposite direction of both of the side walls 63a, 63a and by loosely fitting each of the pins 63c of the other of the first guide units 63 in each of the openings 63d of one of the first guide units 63. At this time, both of the pins 63c, 63c form a pivot. The first guide 6 is formed by repetition of such connection of the two adjacent first guide units 63, 63. A pivotal movement range of the two adjacent first guide units 63, 63 is from a position at which the right ends of the lower end parts of both of the side walls 63a, 63a of one of the first guide units 63 and the left ends of the lower end parts of both of the side walls 63a, 63a of the other of the first guide units 63 contact to a position at which each of the protruding pieces 63e of both of the side walls 63a, 63a of the one of the first guide units 63 and the hill part 63f of each of the first recessed parts 63a.sub.1 that are formed at both of the side walls 63a, 63a of the other of the first guide units 63 contact. The pivotal movement range of each of the first guide units 63 is identical, and due to the pivotal movement in the above-mentioned pivotal movement range of each of the first guide units 63, the first guide 6, as shown in FIG. 1, bends so as to direct toward the upper end portion of the first frame 2 when the first guide 6 is stored in the inside of the first frame 2, and the first guide 6 directs rightward and returns to a linear state when the first guide 6 is drawn from the inside the first frame 2.

(20) In this connection, when the first guide 6 is drawn from the inside of the first frame 2, each of the second recessed parts 63a.sub.3 that are formed at both of the side walls 63a, 63a of one of the two adjacent first guide units 63, 63, which pivotally moves, is inserted into the inside in the opposite direction of both of the side walls 63a, 63a of the other first guide units 63. Therefore, outer side surfaces in the opposite direction of the lower parts of both of the side walls 63a, 63a of each of the first units 63 are disposed in a same plane in the drawn portion 62 of the first guide 6 from the inside of the first frame 2. Additionally, as above-mentioned, since the length of each of the pins 63c is equal to the depth of the first recessed part 63a.sub.1, an outer side surface in the opposite direction of both of the side walls 63a, 63a of each of the pins 63c and an outer surface in the opposite direction of the upper parts of both of the side walls 63a, 63a are disposed in a same plane.

(21) Additionally, a rail part 63g is provided at an inner side portion in the opposite direction of each of the side walls 63a, 63a of each of the first guide units 63 and the rail part 63g extends along an imaginary line VL that connects a center of the above-mentioned pivot of each of the first guide units 63. Further, a supporting piece 63h protruding inward in the opposite direction of both of the side walls 63a, 63a is provided at each of the upper end edge parts of both of the side walls 63a, 63a, which is further upward from the bottom wall 63b than the rail part 63g. Each of the supporting pieces 63h is disposed, in the top-bottom direction, opposite to each of the rail parts 63g of each of the side walls 63a at a side that each of the supporting pieces 63h is provided and a storage part 63i that is hollow is formed between each of the supporting pieces 63h and each of the rail parts 63. See FIG. 4D. Specifically, each of the rail parts 63g has a length from the left end of each of the first guide units 63 to the lower left end of the first notched part 63a.sub.2. On the other hand, each of the supporting pieces 63h extends in the left-right direction except the left end part of each of the first guide units 63. Additionally, a front shape of each of the supporting pieces 63h is L-shaped, and each of the supporting pieces 63h consists of a locking part 63h.sub.1 suspending in parallel with respect to each of the side walls 63a and an inclined part 63h.sub.2 extending downhill to a side of the rail part 63g.

(22) Each of the rail parts 63g functions as a guide when the screen retaining members 9 are attached to and detached from the first guide 6. With reference also to FIGS. 5A and 5B, the screen retaining member 9 consists of a longitudinal base 91 that is bendable in a pivotal moving direction of each of the first guide units 63 of the first guide 6 and longitudinal, and a plurality of needle-like parts 92 that are aligned at a distance and attached to the base 91. The screen retaining member 9 is attached to the inner side in the opposite direction of both of the side walls 63a, 63a of each of the first guide units 63 by inserting the base 91 into an inside of each of the storage parts 63i of each of the first guide units 63 from one of right and left ends of the first guide 6. Each of the rail parts 63g guides the insertion of the base 91 into the storage part 63i during attachment of the screen retaining member 9. The base 91 is supported between each of the rail parts 63g and each of the supporting pieces 63h and all of the needle-like parts 92 protrude inward in the opposite direction of both of the side walls 63a, 63a of each of the first guide units 63. Additionally, the screen retaining member 9 can be detached from the first guide 6, while being guided by each of the rail parts 63g, by drawing the base 91 from the inside of each of the storage parts 63i of each of the first guide units 63 from one of the right and left ends of the first guide 6.

(23) Specifically, the base 91 is locked by the locking part 63h.sub.1 of the supporting piece 63h of each of the first guide units 63 and all of the needle-like parts 92 are inclined to a side of the bottom wall 63b along the downward slope of the inclined part 63h.sub.2 by the inclined part 63h.sub.2. See FIG. 3B. Due to the inclination of all of the needle-like parts 92, gaps in the Y-axis direction, which are shown in FIG. 2, are formed between tip ends in a protruding direction of the needle-like parts 92 of two of the screen retaining members 9 attached to both of the side walls 63a, 63a of each of the first guide units 63 in the first guide 6.

(24) Since the bases 91 of the screen retaining members 9 are bendable in the pivotal moving direction of each of the first guide units 63 of the first guide 6, when the first guide 6 shown in FIG. 1 bends upward, as shown in FIG. 6, the screen retaining members 9 also bend in the same direction. Additionally, as above-mentioned, since each of the rail parts 63g extends along the imaginary line VL that connects the center of the above-mentioned pivot of each of the first guide units 63, as shown in FIG. 3A, the base 91 of each of the screen retaining members 9 attached to the inner side in the opposite direction of both of the side walls 63a, 63a of each of the first guide units 63 is disposed in parallel to the imaginary line VL. The pivotal movement of each of the first guide units 63, i.e., the bending of the first guide 6 is smoothly realized by disposition of the base 91 in parallel to the imaginary line VL. Additionally, since the above-mentioned pivot is positioned at the upper end part of the each of the first guide units 63, the above-mentioned pivot is disposed further upward from the lower end of the above-mentioned opening in which the screen apparatus SD is installed. Accordingly, the pivot is less susceptible to dust, sand, mud, and the like which are easily accumulated on the lower end of the above-mentioned opening, and coupled with the smooth bending of the first guide 6, a closing operation of the first frame 2 by the user is performed lightly and stably. Similarly, since the base 91 of the screen retaining member 9 easily returns to the linear state from a bent state, the return of the first guide 6 from the bent state to the linear state when the first guide 6 is drawn from the inside of the first frame 2 can also be smoothly realized. Accordingly, an opening operation of the first frame 2 is also performed lightly and stably.

(25) Further, a concave part 63j that extends in the same direction as the portion 62 of the first guide 6, which is drawn from the inside of the first frame 2, extends and is recessed inward in the opposite direction of both of the side walls 63a, 63a is provided with both of the side walls 63a, 63a of each of the first guide units 63. A third recessed part 63a.sub.4 that is recessed inward in the opposite direction of both of the side walls 63a, 63a and is similar to the first recessed part 63a.sub.1 and the second recessed part 63a.sub.3 is formed at the left end part of the both of the side walls 63a, 63a, at which the concave part 63j is provided. The third recessed part 63a.sub.4 is positioned between the first recessed part 63a.sub.1 and the second recessed part 63a.sub.3 at each of the side walls 63a. Additionally, a second notched part 63a.sub.5 is formed by cutting an inner surface in the opposite direction of the right end part of both of the side walls 63a, 63a, at which is the concave part 63j is provided. See FIGS. 4B and 4C.

(26) When the first guide 6 is drawn from the inside of the first frame 2 and each of the first guide units 63 pivotally moves, the second notched part 63a.sub.5 of the first guide unit 63 that pivotally moves overlaps on the third recessed part 63a.sub.4 of the first guide unit 63 that has finished pivotal movement and is disposed adjacent to the first guide unit 63 that pivotally moves. Linearity of the portion 62 of the first guide 6, which is drawn from the inside of the first frame 2, is maintained by overlapping of the second notch 63a.sub.5 on the third recessed part 63a.sub.4 and a contact between the right end of the lower end part of both of the side walls 63a, 63a of the first guide unit 63 that pivotally moves and the left end of both of the side walls 63a, 63a of the first guide unit 63 that has finished pivoting. Additionally, the inner surfaces in the opposite direction of both of the side walls 63a, 63a, at which the concave parts 63j are formed, respectively, are placed flush with each other.

(27) In this connection, at both of the side walls 63a, 63a of each of the first guide units 63, as shown in FIGS. 3B, 4C and 4D, the inner surface in the opposite direction of the lower end part of each of the second recessed parts 63a.sub.3 is notched and the third notched part 63a.sub.6 is formed. A notch depth of each of the third notched parts 63a.sub.6 is reduced from the light end to the right end of each of the second recessed parts 63a.sub.3. Additionally, a guided piece 63k continuously protruding inward in the opposite direction of both of the side walls 63a, 63a from the right end of each of the third notched parts 63a.sub.6 is provided. A right end of each of the guided pieces 63k is positioned below the right end of the bottom wall 63b. When the first guide 6 is drawn from the inside of the first frame 2, both of the guided pieces 63k, 63k engage with one side end portion and the other side end portion in the Y-axis direction of the lower rail 5 shown in FIG. 1, respectively, whereby each of the first guide units 63 in the drawn portion 62 of the first guide 6 is suppressed to separate from the lower rail 5. On the other hand, when the first guide 6 is stored in the inside of the first frame 2, each of the third notched parts 63a.sub.6 causes the engagement of the each of the guided pieces 63k with one side end portion and the other side end portion in the Y-axis direction of the lower rail 5 to smoothly release, and separation of the each of the first guide units 63 from the lower rail 5 is facilitated. As a result, the sliding in the left-right direction of the first frame 2 is realized more smoothly.

(28) Returning to FIG. 1, a right end of the first guide 6 is fixed to the lower end portion of the second frame 3 and becomes a fixed end. Additionally, the free end 61 of the first guide 6 is always stored in the inside of the first frame 2. Specifically, the free end 61 is positioned at an upper end of an adjuster 10 that moves up and down in the top-bottom direction in the inside of the first frame 2. The adjuster 10 is connected to the first guide unit 63 positioned at an upper end when the first guide 6 is stored in the inside of the first guide 6. A weight 101 that is longitudinal in the top-bottom direction and lumpy is attached to the adjuster 10. Gravitational force acting on the weight 101 acts on the portion of the first guide 6, which is stored in the inside of the first frame 2. When the first frame 2 is caused to slide leftward, such the gravitational force assists the first guide 6 to be smoothly drawn rightward from the inside of the first frame 2 against the elastic force of the coil spring 31a built in the roller pipe 31 and provides the closing operation by the user a comfortable and stable feeling. Additionally, when the first frame 2 is slid rightward and the screen 1 is stored in the inside of the second frame 3, the gravitational force acting on the weight 101 provides a suitable resistance to the storage of the first guide 6 in the inside of the first frame 2. Rapid winding of the screen 1 around the outer periphery of the roller pipe 31 due to release of the elastic force accumulated in the coil spring 31a is suppressed by the resistance.

(29) A curved protrusion 11 curved by a prescribed curvature is provided with a pair of inner side surfaces, not shown, opposite to each other in the Y-axis direction shown in FIG. 1. The curved protrusion 11 guides the storage of the first guide 6 in the inside of the first frame 2 and the withdrawal of the first guide 6 from the in the inside of the first frame 2 due to insertion of the curved protrusion 11 into the concave part 63j of each of the first guide units 63. In other words, the curved protrusion 11 is curved by the prescribed curvature that can bend the first guide 6 so as to direct upward and return the first guide 6 rightward in the inside of the first frame 2. Accordingly, a smoother storage of the first guide 6 in the inside of the first frame 2 and a smoother withdrawal of the first guide 6 from the first frame 2 are realized.

(30) In the screen apparatus SD, when the first guide 6 is drawn from the inside of the lower portion of the first frame 2 rightward accompanying the leftward sliding of the first frame 2, a lower end portion of the screen 1 is inserted between both of the side walls 63a, 63a of each of the first guide units 63 in the drawn portion 62 of the first guide 6. Specifically, the lower end portion of the screen 1 is inserted into the above-mentioned gaps between the tip ends in the protruding direction of the needle-like parts 92 shown in FIGS. 2, 3A and 3B of the two screen retaining members 9 attached to both of the side walls 63a, 63a of each of the first guide units 63. At this time, each of the needle-like parts 92 of the screen retaining members 9 stabs the lower end portion of the screen 1 and it becomes impossible for the screen 1 to slip out of the drawn portion 62 of the first guide 6. Additionally, when the first guide 6 is stored in the inside of the first frame 2 accompanying the rightward sliding of the first frame 2, the needle-like parts 92 of each of the screen retaining members 9 slip out of the lower end portion of the screen 1, which the needle-like parts 92 have stabbed. As above-mentioned, in the screen apparatus SD, since the screen retaining members 9 are detachably attached to the inner sides in the opposite direction of both of the side walls 63a, 63a of each of the first guide units 63 of the first guide 6, multiple kinds of the screen retaining members 9 which are made by attaching a plurality of the needle-like parts 92 corresponding to the kind of the screen 1 to the base 91 can be prepared in advance. Further, an appropriate screen retaining member 9 selected from the multiple species can be attached to both of the side walls 63a, 63a of each of the first guide units 63 of the first guide 6, whereby damage to the lower end portion of the screen 1 can be suppressed even by repetition of expansion and storage of the screen 1. Additionally, it is not necessary for the first guide unit 63 to be made of each kind of the screens 1 and the first guide 6 can be made of only one kind of the first guide unit 63.

(31) In this connection, an integrally molded product made of a hard resin can be adopted to each of the first guide units 63. A cloth and a net knitted with fibers made of a resin and the like can be adopted to the screen 1 under consideration of weight reduction. A soft resin, a light metal and the like can be adopted to a material for the base 91 of the screen remaining member 9. The needle-like parts 92 are made of an appropriate material to the kind of the screen 1. Additionally, a size of each of the needle-like parts 92 and a distance between the needle-like parts 92 can be appropriately set corresponding to the kind of the screen 1. For example, in a case where the screen 1 is a knitted fabric or a net, the size of each of the needle-like parts 92 can be a size which each of the needle-like parts 92 can enter a stitch or a mesh, and the distance between each of the needle-like parts 92 can be equal to that between the stiches or the meshes. Further, the curved protrusion 11 can be made of a material such that each of the first guide units 63 is not easily worn out even by repetitive insertion of the curved protrusion 11 into the concave part 63j of each of the first guide units 63.

(32) Furthermore, the second guide 7 that is provided with the screen apparatus SD can be adopted to a conventional one. Similar to the first guide 6, the conventional guide is also formed by connecting of a plurality of second guide units 73. Each of the second guide units 73 also includes a pair of side walls, which are disposed opposite to each other in the Y-axis direction, when the second guide 7 is drawn from the inside of the first frame 2, and a bottom wall connecting the side walls. Additionally, one of two adjacent second guide units 73 is pivotally supported by the other of the two adjacent second guide units 73. The second guide 7 may be any of which an upper end portion of the expanded screen 1 is inserted between both of the side walls of each of the second guide units 73 in a drawn portion 72 of the inside of the first frame 2. Similar to the first guide 6, a right end of the second guide 7 is fixed to the second frame 3 and becomes a fixed end.

(33) In the screen apparatus SD, each of the first guide 6 and the second guide 7 is stored in a separate region of the inside of the first frame 2. In other words, a first guiding piece 21 extending in the longitudinal direction of the first frame 2 and protruding inward in the opposite direction of both of the inner side surfaces is provided with each of a pair of inner side surfaces except both of the upper and lower end portions of the first frame 2, which are opposite in the Y-axis direction of the first frame 2. The inside of the first frame 2 is divided into a first storage portion 22 for storing the first guide 6 and a second storage portion 23 for storing the second guide 7 by both of the first guiding pieces 21. The first storage portion 22 is positioned at a left side that is one side in the X-axis direction of the inside of the first frame 2 and the second storage portion 23 is positioned at a right side that is the other side in the X-axis direction of the inside of the first frame 2. The first guide 6 and the second guide 7 that are stored in the inside of the first frame 2 do not collide with each other but pass each other in the inside of the first frame 2 due to the division of the storage regions of the first guide 6 and the second guide 7 in the inside of first frame 2 into the first storage portion 22 and the second storage portion 23. Therefore, entire length of each of the first guide 6 and the second guide 7 can correspond to a size in the left-right direction of the opening in which the screen apparatus SD is installed. Additionally, the needle-like parts 92 of the screen retaining members 9 attached to the inner sides in the opposite direction of both of the side walls 63a, 63a of each of the first guide units 63 of the first guide 6 are not damaged by the second guide 7 and structural constraints are not imposed on the second guide unit 73 forming the second guide 7. Further, in each of the first guide units 63 of the first guide 6, in order to make it less susceptible to dust, sand, mud, and the like that are easily accumulated on the lower end of the above-mentioned opening in which the screen apparatus SD is installed, the bottom wall 63b in the drawn portion 62 of the first storage portion 22 is positioned away from the lower rail 5. Therefore, a size in the top-bottom direction of each of the first guide units 63 of the first guide 6 becomes relatively large. Accordingly, the curvature of bending of the first guide 6 when the first guide 6 is stored in and drawn from the first storage portion 22 can become relatively large due to the first storage portion 22 that is positioned at the left side in the inside of the first frame 2, and the storage of the first guide 6 in the first storage portion 22 and the withdrawal of the first guide 6 from the first storage portion 22 are performed more smoothly.

(34) In this connection, protruding ends of both of the first guiding pieces 21, 21 are disposed away from each other in the Y-axis direction and the tension member 8 is possible to enter both the first storage portion 22 and the second storage portion 23. Additionally, both of the first guiding pieces 21, 21 guide not only up and down movements of the adjuster 10 of the first guide 6 but also up and down movements of the guided member 12 that is connected to the second guide unit 73 positioned at a lower end portion of the second guide 7 when the second guide 7 is stored in the second storage portion 23 and forms the free end 71 of the second guide 7. The free end 71 of the second guide 2 is positioned at a lower end of the guided member 12.

(35) Thus, in a case where the first guide 6 and the second guide 7 are configured to be stored in the first storage portion 22 and the second storage portion 23 that are separate regions in the inside of the first frame 2, respectively, an aspect size, i.e., a size in the left-right direction, of the first frame 2 becomes relatively large. Taking into consideration of the aspect size of the first frame 2, it is preferable that the size in the top-bottom direction of both of the side walls of each of the second guide units 73 in the drawn portion 72 of the second storage portion 23 of the first frame 2 is shorter than that in the top-bottom direction of both of the side walls 63a, 63a of each of the first guide units 63 in the drawn portion 62 of the first storage portion 22 of the first frame 2. In a case where it is difficult for the screen retaining member 9 to be attached to the first guide 6 is attached to the second guide 7, a screen retaining member 13 that is longitudinal in the left-right direction is attached to each of a pair of inner side surfaces opposing to each other in the Y-axis direction of the upper rail 4 through a supporting piece and the like. The similar constitution to that of the screen retaining member 9 is adopted to the screen retaining member 13, for example. In this case, each of the needle-like parts of the screen retaining member 13 stabs the upper end portion of the expanded screen 1 and slipping-out of the expanded screen 1 from the upper rail 4 due to receiving of an external force such as a wind pressure can be suppressed. Additionally, damage to the upper end portion of the screen 1 can be suppressed even by repeating the expansion and storage of the screen 1.

(36) In the screen apparatus SD, a bending guide 14 having a curved surface 141 curved by a prescribed curvature is provided at the upper end portion of the second storage portion 23 of the first frame 2. The curved surface 141 of the bending guide 14 is capable of coming into contact with the bottom wall of each of the second guide units 73 forming the second guide 7. Due to the contact between the curved surface 141 and the bottom wall of each of the second guide units 73, the bending guide 14 causes each of the second guide units 73 to pivotally move and bends the second guide 7 downward, and causes the second guide 7 to return in the left-right direction. Therefore, the storage of the second guide 7 in the second storage portion 23 and the withdrawal of the second guide 7 from the second storage portion 23 accompanying the sliding of the first frame 2 in the left-right direction are smoothly realized. The prescribed curvature of the curved surface 141 can be appropriately set under consideration of such the bending and returning of the second guide 7.

(37) Further, a direction changing member 15 such as a pulley is provided at each of the upper and lower end portions of the first storage portion 22 of the first frame 2 in the screen apparatus SD. The tension member 8 is hung on each of the direction changing members 15. Each of the direction changing members 15 causes a direction of the tension member 8 to change in the Z-axis direction and provides a prescribed tension to the tension member 8.

(38) Referring to FIGS. 7, 8 and 9, the lower end portion of the first frame 2 is formed by a lower block LB that is separable from and connectable to the other portion of the first frame 2. The lower block LB is a hollow member opened upward, downward and rightward. An upper end opening LBa is disposed at a portion corresponding to a lower end opening of the first storage portion 22 shown in FIG. 1. Additionally, a supporting member 16 for disposing the direction changing member 15 in the vicinity of the upper end opening LBa and supporting the direction changing member 15 is provided with the lower block LB. In other words, the direction changing member 15 is disposed at the lower end portion of the first storage portion 22 through the supporting member 16.

(39) Further, the lower block LB is divided into the first part LB1 and the second part LB2 at a center in the Y-axis direction. The curved protrusion 11 is integrally formed at inner surfaces of the first part LB1 and an inner surface of the second part LB2, which oppose to each other when the lower block LB is assembled. Additionally, the curved protrusions 11, 11 are positioned at a portion depending on movements of the concave part 63j of each of the first guide units 63 when the first guide 6 is stored in and drawn from the first storage portion 22 as shown in FIG. 1.

(40) The supporting member 16 includes, at a left-half portion, a supporting part 16a in which the direction changing member 15 is built together with a rotational shaft 15a of the direction changing member 15. Two insertion holes 16a.sub.1 for hanging the tension member 8 on the direction changing member 15 and changing the direction of the tension member 8 in the top-bottom direction pierce the supporting part 16a in the top-bottom direction. Additionally, the supporting member 16 includes a fixing part 16b to the lower block LB at the right-half portion. A pair of wedge protrusions 16b.sub.1, 16b.sub.1 opposing to each other in the Y-axis direction are provided with the fixing part 16b in order to fix the supporting member 16 to the first part LB1 and the second part LB2. The supporting member 16 is inserted into an inside of the lower block LB from below and fixed to the lower block LB. Therefore, a second guiding piece 16b.sub.2 for guiding insertion of the supporting member 16 into the lower block LB is provided at a right end of the fixing part 16b. The second guiding piece 16b.sub.2 protrudes below a lower end of the fixing part 16b. Further, a pair of relieving pieces 16a.sub.2, 16a.sub.2 extending in the top-bottom direction and opposing to each other in the Y-axis direction are provided with each of side surfaces in the Y-axis direction of the supporting member 16. Each of the relieving pieces 16a.sub.2 includes a first relieving part 16a.sub.21 protruding above an upper end of the supporting part 16a and a second relieving part 16a.sub.22 disposed further outside in an opposite direction of both of the relieving pieces 16a.sub.2, 16a.sub.2 than the first relieving part 16a.sub.21. A lower end of the second relieving part 16a.sub.22 is positioned up to a lower end of the supporting part 16a.

(41) A dovetail groove LB3 for fixing the supporting member 16 is formed at a portion of each of the first part LB1 and the second part LB2 of the lower block LB, which corresponds to the wedge protrusion 16b.sub.1 of the fixing part 16b of the supporting member 16, and a guiding groove LB4 is provided at a right end portion of the first part LB1. When the supporting member 16 is fixed to the lower block LB, the first part LB1 and the second part LB2 are overlapped so that the curved protrusions 11, 11 face to each other in the inside of the lower block LB, and the supporting member 16 is inserted into the inside of the lower block LB from below. At this time, the first part LB1 and the second part LB2 are aligned so that the second guiding piece 16b.sub.2 of the fixing part 16b of the supporting member 16 can be inserted into the guiding groove LB4 and the supporting member 16 is pushed up. The wedge protrusion 16b.sub.1 of the fixing part 16b is inserted into the dovetail groove LB3 from below and is finally fitted to the dovetail groove LB3 as the supporting member 16 is pushed up. As a result, the supporting member 16 is fixed in the inside of the lower block LB. In a fixed state of the supporting member 16, the direction changing member 15 built in the supporting part 16a of the supporting member 16 is disposed, in the inside of the lower end portion of the lower block LB, at a portion corresponding to the gaps of the tip ends in the protrusion direction of the needle-like parts 92 of each of the screen retaining members 9 attached to the inside in the opposite direction of both of the side walls 63a, 63a of each of the first guide units 63 of the first guide 63.

(42) On the other hand, the supporting part 16a of the supporting member 16 is disposed between both of the side walls 63a, 63a of each of the first guide units 63 of the first guide 6. Then, as above-mentioned, the pair of the relieving pieces 16a.sub.2, 16a.sub.2 are provided with the supporting part 16a. Each of the relieving pieces 16a.sub.2 comes into contact with the needle-like parts 92 of each of the screen retaining members 9 when the first guide 6 is drawn from and stored in the first storage portion 22. Therefore, as shown in FIG. 10, when the first guide 6 is drawn from and stored in the first storage portion 22, each of the relieving pieces 16a.sub.2 causes the needle-like parts 92 of each of the screen retaining members 9 to bend to the inner side in the opposite direction of both of the side walls 63a, 63a of each of the first guide units 63 and causes the needle-like parts 92 of each of the screen retaining members 9 to move away from the supporting part 16a in the Y-axis direction. Accordingly, contact between the supporting member 16 and the needle-like parts 92 of each of the screen retaining members 9 is suppressed and problems such as deformation, damage, and the like of the needle-like parts 92 together with wear and tear of the supporting member 16 are solved.

(43) Specifically, in each of the relieving pieces 16a.sub.2 shown in FIGS. 7, 8 and 9, the first relieving part 16a.sub.21 has a first slope 16a.sub.21a linearly inclined leftward and downward at a left side surface and the second relieving part 16a.sub.22 has a second slope 16a.sub.22a of which a lower end surface is inclined rightward and downward. An upper end part of the second slope 16a.sub.22a is chamfered so as to be a convex curved surface. When the first guide 6 is drawn from the first storage portion 22, the first guide 6 moves linearly in the first storage portion 22 downward. Therefore, in order to cause the needle-like parts 92 of each of the screen retaining members 9 to bend smoothly, the first relieving part 16a.sub.21 having the first slope 16a.sub.21a at the left side surface is effective. The first slope 16a.sub.21a comes into contact with middle portions of the needle-like parts 92 of each of the screen retaining members 9, which are positioned from a side of the base 91 to a side of the tip ends in the protruding direction, and causes the needle-like parts 92 to bend to a side of the inner surfaces in the opposite direction of both of the side walls 63a, 63a of each of the first guide units 63. Thereafter, the first slope 16a.sub.21a keeps in contact with a portion up to the side of the tip ends in the protruding direction of the bent needle-like parts 92 and causes the needle-like parts 92 to maintain a bent state. Additionally, since the slide guide 6 bends from right bottom to left top when the slide guide 6 is stored in the first storage portion 22, the second relieving part 16a.sub.22 of which a lower end surface is the second slope 16a.sub.22a is effective to cause the needle-like parts 92 of each of the screen retaining members 9 to bend smoothly. The second slope 16a.sub.22a comes into contact with portions of the needle-like parts 92 of each of the screen retaining members 9, which are positioned near the base 91, and causes the needle-like parts 92 to bend the side of the inner surfaces in the opposite direction of both of the side walls 63a, 63a of each of the first guide units 63. Thereafter, the second slope 16a.sub.22a keeps in contact with the middle portions up to the side of the tip ends in the opposite direction of the bent needle-like parts 92 and causes the needle-like parts 92 to maintain a bent state. Accordingly, depending on the movements of the first guide 6 when the first guide 6 is drawn from and stored in the first storage portion 22, each of the relieving pieces 16a.sub.2 shown in FIGS. 7, 8 and 9 can not only cause the needle-like parts 92 of each of the screen retaining members 9 to properly bend to the side of the inner surfaces in the opposite direction of both of the side walls 63a, 63a of each of the first guide units 63 but can also cause the needle-like parts 92 to maintain the bent states. Therefore, the needle-like parts 92 of each of the screen retaining members 9 move away from the supporting part 16a in the Y-axis direction and the contact between the supporting member 16 and the needle-like parts 92 of each of the screen retaining members 9 can be effectively suppressed.

(44) In this connection, each of the relieving pieces 16a.sub.2 is not restricted to the embodiment shown in FIGS. 7, 8 and 9 and, as shown in FIG. 11, a member that includes the first relieving part 16a.sub.21 and a third relieving part 16a.sub.23 downwardly protruding from the supporting part 16a, of which a lower end surface is a curved surface 16a.sub.23a convexly curved rightward and downward is applicable to each of the relieving pieces 16a.sub.2. The first relieving part 16a.sub.21 and the third relieving part 16a.sub.23 are disposed in a same vertical plane in each of the relieving pieces 16a.sub.2 shown in FIG. 11. The curved surface 16a.sub.23a of the third relieving part 16a.sub.23 of each of the relieving pieces 16a.sub.2 functions like the first slope 16a.sub.21a of the first relieving part 16a.sub.21 of each of the relieving pieces 16a.sub.2 shown in FIGS. 7, 8 and 9. Namely, when the first guide 6 is stored in the first storage portion 22, the curved surface 16a.sub.23a comes into contact with the middle portions of the needle-like parts 92 of each of the screen retaining members 9, which are disposed from the side of the base 91 to the side of the tip ends in the protruding direction, and causes the needle-like parts 92 to bend toward the side of the inner surfaces in the opposite direction of both of the side walls 63a, 63a of each of the first guide units 63. Thereafter, the curved surface 16a.sub.23a keeps in contact with the portion up to the side of the tip ends in the protruding direction of the bent needle-like parts 92 and causes the needle-like parts 92 to maintain the bent state. Accordingly, when the first guide 6 is drawn from and stored in the first storage portion 22, the relieving piece 16a.sub.2 shown in FIG. 10, like the each of the relieving pieces 16a.sub.2 shown in FIGS. 7, 8 and 9 can not only cause the needle-like parts 92 of each of the screen retaining members 9 to bend toward the side of the inner surfaces in the opposite direction of both of the side walls 63a, 63a of each of the first guide units 63 but can also cause the needle-like parts 92 to maintain the bent state. Therefore, the needle-like parts 92 of each of the screen retaining members 9 move away from the supporting part 16a in the Y-axis direction and contact between the supporting member 16 and the needle-like parts 92 of each of the screen retaining members 9 can be effectively suppressed.

(45) Additionally, like the second relieving part 16a.sub.22 of each of the relieving pieces 16a.sub.2 shown in FIGS. 7, 8 and 9, the third relieving part 16a.sub.23 of each of the relieving pieces 16a.sub.2 shown in FIG. 11 may be disposed further outside in the opposite direction of both of the relieving pieces 16a.sub.2, 16a.sub.2 than the first relieving part 16a.sub.21.

(46) Incidentally, the tension member 8 shown in FIG. 1 is, for example, a string. The tension member 8 is hung on both of the direction changing members 15, 15, one of which is disposed at the lower end portion of the first storage portion 22 and the other of which is disposed at the upper end portion of the first storage portion 22, and is passed from the first storage portion 22 to the second storage portion 23 through both of the first guiding pieces 21, 21. A ball knot is formed at an end portion of the tension member 8. The ball knot is inserted into a not-shown slit which is formed at a lower end part of the guided member 12 forming the free end 71 of the second guide 7 and downwardly extends, is caught in a lower end edge part of the guided member 12, and is fixed to the guided member 12. Additionally, a portion of the other end side of the tension member 8 is hung on a part of a right end side of a screw head from above and upwardly directs again and another ball knot is formed at an upper end part of the portion of the other end side of the tension member 8. Another ball knot is inserted into a not-shown slit which is formed at an upper end part of the guided member 12 forming the free end 71 of the second guide 7 and downwardly extends, is caught in an upper end edge part of the guided member 12, and is fixed to the guided member 12. The screw is passed through an inside of a slot that is formed in the guided member 12 and extends in the top-bottom direction. A tightening position in the top-bottom direction of the screw with respect to the guided member 12 is adjusted and a prescribed tension is applied to the tension member 8. Further, a portion of the tension member 8, which is positioned at the first storage portion 22 between both of the direction changing members 15, 15, is pressed leftward and is fixed to the upper end part of the adjuster 10 forming the free end 61 of the first guide 6 by the screw. Thus, the tension member 8 connects the free end 61 of the first guide 6 and the free end 71 of the second guide 7, and forms a loop disposed in the top-bottom direction. A stored length in the first storage portion 22 and a drawn length of the first storage portion 22 of the first guide 6 become equal to a stored length in the second storage portion 23 and a drawn length of the second storage portion 23 of the second guide 7 due to the loop formed by the tension member 8. As a result, a parallel sliding of the first frame 2 with respect to the second frame 3 can be certainly realized. Additionally, the parallel sliding of the first frame 2 is realized by the closing operation of the user at an arbitrary portion in the top-bottom direction of the first frame 2. Further, the parallel sliding of the first frame 2 is also realized during the opening operation due to the elastic force of the coil spring 31a. The prescribed tension applied to the tension member 8 is appropriately set under consideration of the above-mentioned sliding of the first frame 2.

(47) Though the invention is descried regarding the above-mentioned embodiment, the invention is not restricted to the above-mentioned embodiment. For example, in addition to such the automatic storage manner using the elastic force of the coil spring 31a as in the above-mentioned embodiment, an automatic opening and closing manner using a torque when a motor rotates for the expansion and storage of the screen 1 and an opening and closing manner manually performing both of the expansion and storage of the screen 1 may be applicable to the screen apparatus SD. Additionally, a foldable screen in which a plurality of pleats are formed can be adopted to the screen 1. Further, in the case of the screen apparatus SD of the manual opening and closing manner, the second frame 3 is not fixed to the above-mentioned opening and is made slidable in the left-right direction like the first frame 2, whereby a screen apparatus SD can be a double-opening manner. Furthermore, the Z-axis direction is not limited to the vertical direction but may be an orthogonal direction with respect to the X-axis direction. For example, the screen apparatus SD can be installed in an inclined opening that is inclined with respect to the vertical plane.

EXPLANATION OF SYMBOLS

(48) SD Screen apparatus 1 Screen 2 First frame 22 First storage portion 23 Second storage portion 3 Second frame 6 First guide 61 Free end of first guide 6 62 Drawn portion of first guide 6 from inside of first frame 2 63 First guide unit 63a Side wall 63b Bottom wall 63c Pin 63d Opening 63g Rail part 63h Supporting piece 7 Second guide 71 Free end of second guide 7 8 Tension member 9 Screen retaining member 91 Base 92 Needle-like parts VL Imaginary line Direction changing member 16 Supporting member 16a Supporting part 16b Fixing part 16a.sub.2 Relieving piece 16a.sub.21 First relieving part 16a.sub.21a First slope 16a.sub.22 Second relieving part 16a.sub.22a Second slope 16a.sub.23 Third relieving part 16a.sub.23a Curved surface