BEAD CHAIN OR CORD RETAINER

Abstract

A bead chain or cord retainer including a frame, a moving part, and an elastic member is provided. The moving part is mounted in the frame and the elastic member is disposed between the frame and the moving part. Thus the moving part is elastically moved in the frame. The moving part includes first and second moving elements integrated with or plugged into each other. A bead chain or a cord is inserted through a clipped and limited space formed by the frame and the moving part. Before the retainer being positioned on a building, the bead chain or the cord is held by the frame and the moving part which are fixed by a positioning member and unable to be pulled. After the retainer being positioned on the building, the positioning member is removed and the bead chain or the cord is drawn to open or close curtains.

Claims

1. A bead chain or cord retainer comprising a frame, a moving part, and an elastic member; wherein the frame consists of a first wall, a second wall disposed opposite to the first wall, a third wall connected with a side of the first wall and a side of the second wall, a space defined by the first wall, the second wall, and the third wall and penetrating vertically, a limit rod disposed between the first wall and the second wall and across the space, and a through hole mounted to the third wall; wherein the moving part having a first moving unit, a second moving unit, and a passage; the first moving unit is provided with a first vertical wall, a connection segment connected to a top of the first vertical wall, and an extension segment extending from a bottom of the first vertical wall toward the second moving unit; the second moving unit is a vertical wall arranged opposite to the first vertical wall and a top end of the second moving unit is connected to a side of the connection segment in an assembled manner; the passage is penetrating horizontally, defined by the first vertical wall, the second moving unit, and the connection segment, and used for allowing a bead chain or a cord to insert through; the second moving unit is provided with an installation hole; a fastener is inserted through the installation hole and the through hole to be fastened into a building; by the connection segment of the moving part aligned with the limit rod of the frame, the first vertical wall and the second moving unit are inserted and mounted in the space of the frame and a part of the passage is overlapped with the first wall and the second wall; and wherein the elastic member is arranged between the limit rod and the extension segment for allowing the moving part to be elastically mounted in the space; thus the bead chain or the cord is able to be clipped or released by changing of an area size of the passage overlapped with the first wall and the second wall.

2. The bead chain or cord retainer as claimed in claim 1, wherein a vertically-movable cover plate is disposed between a side of the first wall away from the third wall and a side of the second wall away from the third wall so that the cover plate is opposite to the third wall; the side of the first wall away from the third wall and the side of the second wall away from the third wall are both provided with a joining edge; the cover plate is provided with two joining steps disposed on two sides of the cover plate and joined with the two joining edges correspondingly.

3. The bead chain or cord retainer as claimed in claim 2, wherein the side of the first wall away from the third wall and the side of the second wall away from the third wall are both respectively provided with at least one locking hole; each of the two sides of the cover plate is further respectively provided with at least one locking block, corresponding to the locking holes and able to be mounted into the locking holes correspondingly.

4. The bead chain or cord retainer as claimed in claim 3, wherein the second moving unit is provided with a positioning hole located above the installation hole and an opening is disposed on the third wall of the frame; a positioning member is inserted through the opening to be mounted and fixed in the positioning hole for fixing the bead chain or the cord at a state of being clipped and limited by the frame and the second moving unit when the elastic member is not compressed and the moving part is at a lower position.

5. The bead chain or cord retainer as claimed in claim 4, wherein the positioning member is composed of an insertion pin and at least one limiting piece located beside the insertion pin and provided with limiting edges; under a state that the insertion pin of the positioning member is inserted into the positioning hole of the moving part and the elastic member is not compressed so that the moving part is at the lower position, the limiting edges of two of the limiting pieces are in contact with and abutting against an upper edge of the opening to fix the bead chain or the cord at the state of being clipped and limited by the frame and the second moving unit.

6. The bead chain or cord retainer as claimed in claim 5, wherein the limiting piece has the limiting edge with at least two abutting levels which is defined as a distance between an axis of the insertion pin and the limiting edge.

7. The bead chain or cord retainer as claimed in claim 6, wherein a truncated conical tenon is disposed on a rear end of the insertion pin and a slot is formed from the rear end of the insertion pin along the axis of the insertion pin.

8. The bead chain or cord retainer as claimed in claim 7, wherein a mounting slot with an opening facing downward is disposed on the connection segment and two braking slots are located beside the mounting slot; the top end of the second moving unit is provided with a projecting piece projecting upward and two braking hooks projecting upward are located beside the projecting piece; the second moving unit and the connection segment are integrally connected to form one part by the projecting piece inserted into the mounting slot and the two braking hooks inserted into and locked with the two braking slots correspondingly.

9. The bead chain or cord retainer as claimed in claim 3, wherein a mounting slot with an opening facing downward is disposed on the connection segment and two braking slots are located beside the mounting slot; the top end of the second moving unit is provided with a projecting piece projecting upward and two braking hooks projecting upward are located beside the projecting piece; the second moving unit and the connection segment are integrally connected to form one part by the projecting piece inserted into the mounting slot and the two braking hooks inserted into and locked with the two braking slots correspondingly.

10. The bead chain or cord retainer as claimed in claim 9, wherein a lower surface of the limit rod is provided with a bulging block projecting toward the extension segment and a bump is arranged at an upper surface of the extension segment and projecting toward the limit rod; two ends of the elastic member are mounted to the bulging block and the bump correspondingly so that the elastic member is positioned.

11. The bead chain or cord retainer as claimed in claim 1, wherein the second moving unit is provided with a positioning hole located above the installation hole and an opening is disposed on the third wall of the frame; a positioning member is inserted through the opening to be mounted and fixed in the positioning hole for fixing the bead chain or the cord at a state of being clipped and limited by the frame and the second moving unit when the elastic member is not compressed and the moving part is at a lower position.

12. The bead chain or cord retainer as claimed in claim 1, wherein a mounting slot with an opening facing downward is disposed on the connection segment and two braking slots are located beside the mounting slot; the top end of the second moving unit is provided with a projecting piece projecting upward and two braking hooks projecting upward are located beside the projecting piece; the second moving unit and the connection segment are integrally connected to form one part by the projecting piece inserted into the mounting slot and the two braking hooks inserted into and locked with the two braking slots correspondingly.

13. A bead chain or cord retainer comprising a frame, a moving part, and an elastic member; wherein the frame consists of a first wall, a second wall disposed opposite to the first wall, a third wall connected with a side of the first wall and a side of the second wall, a space defined by the first wall, the second wall, and the third wall and penetrating vertically, a limit rod disposed between the first wall and the second wall and across the space, and a through hole mounted to the third wall; wherein the moving part having a first moving unit, a second moving unit, and a passage; the first moving unit is provided with a first vertical wall, a connection segment connected to a top of the first vertical wall, and an extension segment extending from a bottom of the first vertical wall toward the second moving unit; the second moving unit is a vertical wall arranged opposite to the first vertical wall and a top end of the second moving unit is integrally connected with a side of the connection segment; the passage penetrating horizontally is defined by the first vertical wall, the second moving unit, and the connection segment and used for allowing a bead chain or a cord to insert through; the second moving unit is provided with an installation hole; a fastener is inserted through the installation hole and the through hole to be fastened into a building; by the connection segment of the moving part aligned with the limit rod of the frame, the first vertical wall and the second moving unit are inserted and mounted in the space of the frame and a part of the passage is overlapped with the first wall and the second wall; and wherein the elastic member is arranged between the limit rod and the extension segment for allowing the moving part to be elastically mounted in the space; thus the bead chain or the cord is able to be clipped or released by changing of an area size of the passage overlapped with the first wall and the second wall.

14. The bead chain or cord retainer as claimed in claim 13, wherein a vertically-movable cover plate is disposed between a side of the first wall away from the third wall and a side of the second wall away from the third wall so that the cover plate is opposite to the third wall; the side of the first wall away from the third wall and the side of the second wall away from the third wall are both provided with a joining edge; the cover plate is provided with two joining steps disposed on two sides of the cover plate and joined with the two joining edges correspondingly.

15. The bead chain or cord retainer as claimed in claim 14, wherein the side of the first wall away from the third wall and the side of the second wall away from the third wall are both respectively provided with at least one locking hole; each of the two sides of the cover plate is further respectively provided with at least one locking block, corresponding to the locking holes and able to be mounted into the locking holes correspondingly.

16. The bead chain or cord retainer as claimed in claim 15, wherein the second moving unit is provided with a positioning hole located above the installation hole and an opening is disposed on the third wall of the frame; a positioning member is inserted through the opening to be mounted and fixed in the positioning hole for fixing the bead chain or the cord at a state of being clipped and limited by the frame and the second moving unit when the elastic member is not compressed and the moving part is at a lower position.

17. The bead chain or cord retainer as claimed in claim 16, wherein the positioning member is composed of an insertion pin and at least one limiting piece located beside the insertion pin and provided with limiting edges; under a state that the insertion pin of the positioning member is inserted into the positioning hole of the moving part and the elastic member is not compressed so that the moving part is at the lower position, the limiting edges of two of the limiting pieces are in contact with and abutting against an upper edge of the opening to fix the bead chain or the cord at the state of being clipped and limited by the frame and the second moving unit.

18. The bead chain or cord retainer as claimed in claim 17, wherein the limiting piece has the limiting edge with at least two abutting levels which is defined as a distance between an axis of the insertion pin and the limiting edge.

19. The bead chain or cord retainer as claimed in claim 18, wherein a truncated conical tenon is disposed on a rear end of the insertion pin and a slot is formed from the rear end of the insertion pin along the axis of the insertion pin.

20. The bead chain or cord retainer as claimed in claim 19, wherein a lower surface of the limit rod is provided with a bulging block projecting toward the extension segment and a bump is arranged at an upper surface of the extension segment and projecting toward the limit rod; two ends of the elastic member are mounted to the bulging block and the bump correspondingly so that the elastic member is positioned.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG. 1 is an exploded view of an embodiment according to the present invention;

[0022] FIG. 2 is a perspective view showing a bead chain or cord being mounted into a clipped and limited space after assembly of a retainer of an embodiment according to the present invention;

[0023] FIG. 3 is a perspective view showing a bead chain or cord mounted into a clipped and limited space and clipped and limited between an upper surface of a limit rod and a connection segment of a first moving unit after being assembled with a retainer of an embodiment according to the present invention;

[0024] FIG. 4 is another perspective view showing a bead chain or cord mounted into a clipped and limited space and clipped and limited between an upper surface of a limit rod and a connection segment of a first moving unit after being assembled with a retainer of an embodiment according to the present invention;

[0025] FIG. 5 is a side sectional view showing a bead chain or cord mounted into a clipped and limited space and clipped and limited between an upper surface of a limit rod and a connection segment of a first moving unit after being assembled with a retainer of an embodiment according to the present invention;

[0026] FIG. 6 is a rear view showing a bead chain or cord mounted into a clipped and limited space and clipped and limited between an upper surface of a limit rod and a connection segment of a first moving unit after being assembled with a retainer of an embodiment according to the present invention;

[0027] FIG. 7 is a front sectional view showing an assembly of a frame and a cover plate of an embodiment according to the present invention;

[0028] FIG. 8 is top sectional view showing an assembly of a frame and a cover plate of an embodiment according to the present invention;

[0029] FIG. 9 is a perspective view showing removing a positioning member from a retainer in a first step of mounting a retainer to a building of an embodiment according to the present invention;

[0030] FIG. 10 is a side sectional view showing a force applied to pull a retainer downward in a second step of mounting a retainer to a building of an embodiment according to the present invention;

[0031] FIG. 11 is a side sectional view showing insertion of a fastener through a through hole of a frame to be fastened into a building in a third step of mounting a retainer to a building of an embodiment according to the present invention;

[0032] FIG. 12 is a perspective view showing a retainer already mounted to a building of an embodiment according to the present invention;

[0033] FIG. 13 is a perspective view showing a retainer with a cord of an embodiment according to the present invention;

[0034] FIG. 14 is a side sectional view showing a retainer with a cord of an embodiment according to the present invention;

[0035] FIG. 15 is a rear view showing a retainer with a cord of an embodiment according to the present invention;

[0036] FIG. 16 is an exploded view of an embodiment in which a first moving unit and a second moving unit of a moving part integrated with each other according to the present invention;

[0037] FIG. 17 is a side sectional view showing a first moving unit and a second moving unit of a moving part integrated with each other and installed on a building in an embodiment according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0038] Please refer FIG. 1-8, a bead chain or cord retainer according to the present invention includes a frame 1, a moving part 2, and an elastic member 3.

[0039] The frame 1 consists of a first wall 11, a second wall 12 disposed opposite to the first wall 11, a third wall 13 connected with one side of the first wall 11 and one side of the second wall 12, a space 14 penetrating vertically and defined by the first wall 11, the second wall 12, and the third wall 13, a limit rod 15 disposed between the first wall and 11 the second wall 12 and across the space 14, and a through hole 16 mounted to the third wall 13.

[0040] The moving part 2 is composed of a first moving unit 21, a second moving unit 22, and a passage 23. The first moving unit 21 consists of a first vertical wall 211, a connection segment 212 connected to a top of the first vertical wall 211, and an extension segment 213 extending from a bottom of the first vertical call 211 toward the second moving unit 22. The second moving unit 22 is a vertical wall arranged opposite to the first vertical wall 211. As to an embodiment shown in FIG. 1-14, a top end of the second moving unit 22 is connected with one side of a connection segment 212 in an assembled manner. As to an embodiment shown in FIG. 15-17, a top end of the second moving unit 22 is integrally connected with one side of a connection segment 212. The passage 23 is penetrating horizontally, defined by the first vertical wall 211, the connection segment 212, and the second moving unit 22, and used for allowing a bead chain or a cord 4 to insert through. The second moving unit 22 is provided with an installation hole 221. As shown in FIG. 10 and FIG. 11, a fastener 5 is inserted through the installation hole 221 and the through hole 16 of the frame 1 to be fastened into a building. By the connection segment 212 of the moving part 2 aligned with the limit rod 15 of the frame 1, the first vertical wall 211 and the second moving unit 22 are inserted and mounted in the space 14 of the frame 1 and a part of the passage 23 is overlapped with the first wall 11 and the second wall 12. The rest part of the passage 23 without being overlapped with the first wall 11 and the second wall 12 forms a clipped and limited space for clipping and limiting the bead chain or the cord 4.

[0041] The elastic member 3 is installed between the limit rod 15 of the frame 1 and the extension segment 213 of the moving part 2 for allowing the moving part 2 to be elastically mounted in the space 14 of the frame 1. Generally, the frame 1 and the moving part 2 are abutting against by the elastic member 3 so that the moving part 2 is located at a lower position and the clipped and limited space formed by the frame 1 and the moving part 2 is compressed. Now the bead chain or the cord 4 is clipped and limited between an upper surface of the limit rod 15 of the frame 1 and an inner surface of the connection segment 212 of the first moving unit 21. In such state, the bead chain or the cord 4 is held and fixed, unable to be pulled. When the moving part 2 is lifted to compress the elastic member 3, the clipped and limited space formed by the frame 1 and the moving part 2 is expanded. At the moment, the bead chain or the cord 4 is no more clipped and limited between the upper surface of the limit rod 15 of the frame 1 and the inner surface of the connection segment 212 of the moving part 2, changed into a released state. That means the bead chain or the cord 4 can be clipped or released by changing an area size of the passage 23 overlapped with the first wall 11 and the second wall 12.

[0042] The retainer is mounted to the building in order to allow the bead chain or the cord 4 wound around a curtain controller (as shown in FIG. 12) able to be drawn smoothly to open or close curtains safely. First the clipped and limited space formed by the frame 1 and the moving part 2 is compressed because that the elastic member 3 is abutting against both the frame 1 and the moving part 2. Thus the bead chain or the cord 4 is clipped and positioned between the upper surface of the limit rod 15 of the frame 1 and the inner surface of the connection segment 212 of the moving part 2 (as shown in FIG. 3-6). Thus a relative position of the bead chain or the cord 4 with respect to the retainer is fixed and this helps to measure the position of the retainer being mounted to the building easily. At the same time, the bead chain or the cord 4 and the retainer will not rotate with respect to each other during packaging and transportation and this meets international safety regulations for operating the curtain chain or cord.

[0043] Refer to FIG. 9-12, pull the frame 1 of the retainer down. The other end of the bead chain or the cord 4 opposite to the end with the retainer is wound around a curtain controller so that the moving part 2 is held by the bead chain or the cord 4 and unable to be moved downward along with the frame 1. Thereby the elastic member 3 located between the frame 1 and the moving part 2 is compressed by the frame 1. Now the through hole 16 on the third wall 13 of the frame 1 is exposed and the fastener 5 can be inserted through the installation hole 221 and the through hole 16 to be fastened into the building. Thus fixing of the retainer on the wall is completed. At the moment, the moving part 2 is fixed at a lifted state so that the clipped and limited space formed by the frame 1 and the moving part 2 is expanded. That means the bead chain or the cord 4 is no more clipped and limited between the upper surface of the limit rod 15 of the frame 1 and the inner surface of the connection segment 212 of the moving part 2, being in a released state. In this state, the bead chain or the cord is pulled straight property, without redundant length to avoid tangling and accidental strangulation. At the same time, the bead chain or the cord 4 can only be pulled smoothly within the passage 23 formed by the frame 1 and the moving part 2 for control of opening or closing of curtains.

[0044] In a preferred embodiment of the present invention, in order to ensure that the bead chain or the cord 4 is clipped and positioned between the upper surface of the limit rod 15 of the frame 1 and the inner surface of the connection segment 212 of the moving part 2, a positioning hole 222 is arranged at the second moving unit 22 of the moving part 2 and located above the installation hole 221 and an opening 17 is disposed on the third wall 13 of the frame 1. A positioning member 24 is inserted into the positioning hole 222 through the opening 17 of the frame 1 (refer to FIG. 1-6). By insertion of the positioning member 24, a relative position of the frame 1 with respect to the moving part 2 is limited and fixed. Now the elastic member 3 is not compressed and the moving part 2 is in a lower position with respect to the frame 1. The bead chain or the cord 4 is stably clipped by the frame 1 and the moving part 2 to be in a fixed state. The positioning member 24 will not be pulled and removed until the bead chain or cord retainer is fixed on a building. Thus the frame 1 and the moving part 2 are released from the fixed state. Then the frame 1 is pulled down and the fastener 5 is inserted through the installation hole 221 and the through hole 16 to be fastened into the building. Thereby fastening of the retainer on the building is completed.

[0045] The positioning member 24 is composed of an insertion pin 241 and at least one limiting piece 242 each of which is integrally connected with and located beside the insertion pin 241 and provided with at least two limiting edges 2421 on a periphery of the limiting piece 242. After the frame 1, the moving part 2, the elastic member 3, and the bead chain or the cord 4 being assembled and the insertion pin 241 of the positioning member 24 being inserted into the positioning hole 222 of the moving part 2 through the opening 17 of the frame 1, the limiting edges 2421 of the limiting piece 242 of the positioning member 24 is in contact with and abutting against an upper edge of the opening 17 of the frame 1 so that a relative positions of the frame 1 with respect to the moving part 2 is fixed securely. Thus the bead chain or the cord 4 is precisely locked at the state being clipped and fixed by the frame 1 and the moving part 2.

[0046] The limiting piece 242 has the limiting edge 2421 with at least one abutting level which is defined as a distance between an axis of the insertion pin 241 and the limiting edge 2421. As shown in FIG. 6, the limiting piece 242 is provided with the two limiting edges 2421 which have different distances to the axis of the insertion pin 241 and form two different levels H1, H2 for abutting of the moving part 2. According to an outer diameter of the bead chain or the cord 4 inserted through the clipped and limited space between the frame 1 and the moving part 2, a size of the clipped and limited space can be adjusted by changing positions of limiting edge 2421 of the positioning member 24 abutting against the opening 17 on the third wall 13 of the frame 1 in response to the different outer diameters of the bead chain or the cord 4. For example, refer to FIG. 13, FIG. 14, and FIG. 15, when the positioning member 24 is abutting against the opening 17 of the frame 1 by the limiting edge 2421 with the longer level, the clipped and limited space formed between the frame 1 and the moving part 2 is more compressed in response to the cord 4 with a smaller outer diameter. Refer to FIG. 1-6, the positioning member 24 is abutting against the opening 17 of the frame 1 by the limiting edge 2421 with the shorter level so that the clipped and limited space formed between the frame 1 and the moving part 2 is looser in response to the cord 4 with the larger outer diameter. No matter the limiting piece 242 of the positioning member 24 is abutting against the opening 17 of the frame 1 by the limiting edge 2421 with the longer level or the shorter level, the bead chain or the cord 4 can be secured firmly by the retainer without being able to be pulled while the retainer is not mounted to the building yet. Thereby safety requirements are met. In a preferred embodiment, the positioning member 24 can be removed only by tools.

[0047] In a preferred embodiment, in order to ensure the positioning member 24 and the positioning hole 222 mounted with each other securely and the positioning member 24 is unable to be released from the positioning hole 222 easily, a truncated conical tenon 2411 is disposed on a rear end of the insertion pin 241 of the positioning member 24 and a slot 2412 is formed from the rear end of the insertion pin 241 along the axis of the insertion pin 241. Thus the truncated conical tenon 2411 has elasticity while being pressed. This is beneficial to the insertion of the truncated conical tenon 2411 through the positioning hole 222 and the truncated conical tenon 2411 is expanded and returned to the original shape after being inserted through the positioning hole 222. Therefore, the positioning member 24 will not come off easily.

[0048] In a preferred embodiment, the upper surface of the limit rod 15 is designed into a toothed surface 151 (as shown in FIG. 1) which increases a clipping force the limit rod 15 of the frame 1 and the connection segment 212 of the moving part 2 applied to the bead chain or the cord 4 for preventing the bead chain or the cord 4 from sliding and moving easily while being clipped. Especially when the bead chain 4 is used, beads 41 each of which is just mounted between two adjacent teeth on the toothed surface 151 in combination with the connection segment 212 of the moving part 2 can provide good clipping and limiting effect.

[0049] In a preferred embodiment, a lower surface of the limit rod 15 is provided with a bulging block 152 projecting toward the extension segment 213 of the moving part 2 after the frame 1 and the moving part 2 being assembled with each other (refer to FIG. 1 and FIG. 5). A bump 2131 projecting toward the limit rod 15 of the frame 1 is arranged at an upper surface of the extension segment 213 of the moving part 2. Two ends of the elastic member 3 are fitted to the bulging block 152 and the bump 2131 correspondingly so that the elastic member 3 is positioned.

[0050] In a preferred embodiment, a bead chain or cord retainer further includes a cover plate 6. Refer to FIG. 1-4, FIG. 5, FIG. 7, and FIG. 8, the cover plate 6 which is vertically movable is disposed between another side of the first wall 11 and another side of the second wall 12, which are respectively away from the side of the first wall 11 connected with the third wall 13 and the side of the second wall 12 connected with the third wall 13. The cover plate 6 is arranged opposite to the third wall 13. The side of the first wall 11 away from the third wall 13 and the side of the second wall 12 away from the third wall 13 are respectively provided with a joining edge 111 and a joining edge 121. The cover plate 6 includes two joining steps 61 which are disposed on two sides of the cover plate 6 and joined with the two joining edges 111, 121 correspondingly.

[0051] In a preferred embodiment, the side of the first wall 11 away from the third wall 13 and the side of the second wall 12 away from the third wall 13 are respectively provided with at least one locking hole 114 and at least one locking hole 124 (as shown in FIG. 1, FIG. 7, and FIG. 8). Each of the two sides of the cover plate 6 is further respectively provided with at least one locking block 62, corresponding to the locking holes 114, 124. While the cover plate 6 being moved upward or downward to the furthest position, the cover plate 6 can be positioned firmly by the locking blocks 62 mounted into the locking holes 114, 124 correspondingly.

[0052] In a preferred embodiment (refer to FIG. 1 and FIG. 6), a mounting slot 214 with an opening facing downward is disposed on the connection segment 212 of the first moving unit 21 and two braking slots 215 are located beside the mounting slot 214. The top end of the second moving unit 22 is provided with a projecting piece 223 projecting upward and two braking hooks 224 projecting upward and located beside the projecting piece 223. The projecting piece 223 and the braking hooks 224 are respectively corresponding to the mounting slot 214 and the braking slots 215. Thereby the second moving unit 22 and the first moving unit 21 are integrally connected to form one part by the projecting piece 223 inserted into the mounting slot 214 and the two braking hooks 224 inserted into and locked with the two braking slots 215 correspondingly.

[0053] First the elastic member 3 is disposed between the first moving unit 21 and the frame 1. Then the second moving unit 22 is mounted into the frame 1 through a bottom of the frame 1. Next the bead chain or the cord 4 is placed into the passage 23 of the first moving unit 21. Then the projecting piece 223 of the second moving unit 22 is inserted into the mounting slot 214 of the first moving unit 21 correspondingly while the two braking hooks 224 of the second moving unit 22 are inserted into and hooked with the two braking slots 215 of the first moving unit 21. Thereby the first moving unit 21 and the second moving unit 22 are connected and integrated into one part. The assembly of the frame 1, the moving part 2, the elastic member 3, and the bead chain or the cord 4 is completed. By such design, the assembly of the retainer is easier and more convenient.

[0054] Moreover, the first moving unit 21 and the second moving unit 22 of the moving part 2 can also be connected integrally. As shown in FIG. 16 and FIG. 17, a top end of the second moving unit 22 is integrally connected with a side of the connection segment 212 of the first moving unit 21, which is different from an assembled structure of the embodiment shown in FIG. 1-6. The structure of this embodiment is different from that the of the above embodiment shown in FIG. 1-6 is in the way of the bead chain or the cord 4 inserted through the passage 23. The structure, assembled way, and operations of the rest components are the same as those of the embodiment shown in FIG. 1-6 so that no more details are given.

[0055] Additional advantages and modifications will readily occur to those skilled in the art. Therefore, the invention in its broader aspects is not limited to the specific details, and representative devices shown and described herein. Accordingly, various modifications may be made without departing from the spirit or scope of the general inventive concept as defined by the appended claims and their equivalent.