Security window applied to single window

Abstract

A security window applied to a single window is applied to a previously installed single window so as to block an open space of the window and prevent entry by strangers and a person inside from having a falling accident. The security window can be separated from within a room as necessary, and thus movement of an object or emergency escape is facilitated. Meanwhile, the security window cannot be separated from outside the room, and thus intrusion by persons with malicious intent can be prevented from the onset.

Claims

1. A security window applied to a single window comprising: moving guides fixedly installed between one side of an outside channel's window and a sash at a location facing the outside channel's window; a lattice unit with a number of vertical rods, wherein: the vertical rods are connected to each other by links, form insertion holes to which the moving guides are inserted, and are collapsed or spread out along the moving guides; a fixing bar including a body and a locking piece, wherein: the body is installed to one side of an inside channel's window and forms a coupling hole through which a coupling protrusion of the lattice unit passes; and the locking piece connects to one end of a pulling wire, is movable up and down, and forms a locking hole at a location corresponding to the coupling hole of the body; and a lock for binding the coupling protrusion of the lattice unit as the locking piece is lifted up by operating a switch connected to the other end of the pulling wire or for unlocking the coupling protrusion by lowering the locking piece, wherein the coupling protrusion of the lattice unit is shaped to have a portion bent in the lower direction; and the locking piece of the fixing bar is shaped to have a portion bent as the letter L in cross-section, wherein: the locking hole facing the coupling hole of the body is formed on one side wall of the bent portion of the locking piece; and when the locking piece is lifted up by operating the lock, the bent portion of the coupling protrusion is bound into the locking hole.

2. A security window applied to a single window comprising: moving guides fixedly installed between one side of an outside channel's window and a sash at a location facing the outside channel's window; a lattice unit with a number of vertical rods, wherein: the vertical rods are connected to each other by links, form insertion holes to which the moving guides are inserted, and are collapsed or spread out along the moving guides; a fixing bar including a body and a locking piece, wherein: the body is installed to one side of an inside channel's window and forms a coupling hole through which a coupling protrusion of the lattice unit passes; and the locking piece connects to one end of a pulling wire, is movable up and down, and forms a locking hole at a location corresponding to the coupling hole of the body; and a lock for binding the coupling protrusion of the lattice unit as the locking piece is lifted up by operating a switch connected to the other end of the pulling wire or for unlocking the coupling protrusion by lowering the locking piece, wherein: the body of the fixing bar is fixed to the inside channel's window by a bolt; a bolt guide hole through which that bolt passes is formed on the other side wall of the bent portion of the locking piece of the fixing bar; when the locking piece is lowered, the bolt guide hole faces the bolt, so that the bolt is loosened; and when the locking piece is lifted, the bolt is hidden, so that the bolt is not loosened.

3. A security window applied to a single window comprising: moving guides extended and installed between both sides of a sash; a lattice unit with a number of vertical rods, wherein: the vertical rods are connected to each other by links, form insertion holes to which the moving guides are inserted, and are collapsed or spread out along the moving guides; a fixing bar including a body and a locking piece, wherein: the body is installed to the other end of the sash and forms a coupling hole through which a coupling protrusion of the lattice unit passes; and the locking piece connects to one end of a pulling wire, is movable up and down, and forms a locking hole at a location corresponding to the coupling hole of the body; and a lock for binding the coupling protrusion of the lattice unit as the locking piece is lifted up by operating a switch connected to the other end of the pulling wire or for unlocking the coupling protrusion by lowering the locking piece, wherein: the coupling protrusion of the lattice unit is shaped to have a portion bent in the lower direction; and the locking piece of the fixing bar is shaped to have a portion bent as the letter L in cross-section, wherein: the locking hole facing the coupling hole of the body is formed on one side wall of the bent portion of the locking piece; and when the locking piece is lifted up by operating the lock, the bent portion of the coupling protrusion is bound into the locking hole.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The features and advantages of the invention will become more apparent from the following detailed description in conjunction with the accompanying drawings, in which:

(2) FIG. 1 is an elevation view of a security window applied to a single window, installed to a sash, seen from the inside of the building, in a state where an inside channel's window is removed, according to a first embodiment of the invention;

(3) FIG. 2 is a partial perspective view of a security window applied to a single window that describes a lattice unit, moving guide, and coupling protrusion installed to an inside channel's window, according to a first embodiment of the invention;

(4) FIG. 3 is a top view of a window to which a security window applied to a single window is installed, in a state where the inside channel's window is open according to a first embodiment of the invention;

(5) FIG. 4 is a top view of a window to which a security window applied to a single window is installed, in a state where the inside channel's window is closed according to a first embodiment of the invention;

(6) FIG. 5 is an elevation view of a coupling protrusion of an inside channel's window to which an insert guide piece is installed, in a security window applied to a single window according to a first embodiment of the invention;

(7) FIG. 6 is an elevation view of an inside channel's window to which a lifting preventing unit is installed, in a security window applied to a single window according to a first embodiment of the invention;

(8) FIG. 7 is an elevation of an inside channel's window to which a lock and a pulling wire are installed, seen from the inside of the building, in a security window applied to a single window according to a second embodiment of the invention;

(9) FIG. 8 is an elevation of an inside channel's window to which a fixing bar is installed, seen from the outside of the building, in a security window applied to a single window according to a second embodiment of the invention;

(10) FIG. 9 is a perspective view of a lattice unit and a latching piece of a fixing bar in a security window applied to a single window according to a second embodiment of the invention;

(11) FIG. 10 is a partial perspective view of a lattice unit, a latching piece of a fixing bar, and a body in a security window applied to a single window according to a second embodiment of the invention;

(12) FIG. 11 is a cross-sectional view of FIG. 10, taken along line A-A;

(13) FIG. 12 is cross-sectional views showing states where a locking piece is coupled to and released from a body of a fixing bar installed to the inside channel's window in a security window applied to a single window according to a second embodiment of the invention;

(14) FIG. 13 is an elevation view of a window to which a security window applied to a single window is installed, in a state where the inside channel's window is open, seen from the outside of the building, according to a second embodiment of the invention;

(15) FIG. 14 is a top view of FIG. 13, describing the state in concept;

(16) FIG. 15 is an elevation view of a window to which a security window applied to a single window is installed, in a state where the inside channel's window is closed, seen from the outside of the building, according to a second embodiment of the invention;

(17) FIG. 16 is a top view of FIG. 15, describing the state in concept;

(18) FIG. 17 an elevation view of a security window applied to a single window, installed to a sash, according to a third embodiment of the invention; and

(19) FIG. 18 is an elevation view of a security window applied to a single window, installed to a sash, according to a fourth embodiment of the invention.

BRIEF DESCRIPTION OF SYMBOLS IN THE DRAWINGS

(20) 110: sash 120: outside channel's window 121: moving guide installation piece 130: inside channel's window 131: frame 132: coupling protrusion 133: Insert guide piece 134: lift preventing unit 150: moving guide 160: lattice unit 161: coupling vertical rod 161a: insertion hole a 161b: coupling hole 162: intermediate vertical rods 163: fixed vertical rod 164: links 210: sash 220: outside channel's window 230: inside channel's window 231: frame 231a: through-hole 232: cover 250: moving guide 260: lattice unit 261: coupling vertical rod 261a: insertion hole a 261b: coupling protrusion 262: intermediate vertical rods 263: fixed vertical rod 264: links 270: pulling wire 280: lock 281: switch 281a: locking piece 282: latching protrusion 283: unlatching button 290: fixing bar 291: body 291a: coupling hole 291b: inserting hole 291c: bolt entry portion 291d: bolt fixing portion 292: locking piece 292a: locking hole 292b: bolt guide hole 292c: insertion hole a 293: bolt 310: sash 350: moving guide 360: lattice unit 361: coupling vertical rod 361a: insertion hole a 361b: coupling protrusion 362: intermediate vertical rods 363: fixed vertical rod 364: links 370: pulling wire 380: lock 390: fixing bar 391: body 410: sash 460: lattice-fixed security window 462: coupling protrusion 463: hinge 480: lock 490: fixing bar 491: body

DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS

(21) Hereinafter, preferred embodiments of the invention are described in detail with reference to the accompanying drawings. Detailed descriptions of well-known functions and structures incorporated herein may be omitted or briefly explained to avoid obscuring the subject matter of the invention. Therefore, it will be appreciated to those skilled in the art that, although components are not shown in the drawings, they should be considered as part of the invention.

Embodiment 1

(22) FIG. 1 is an elevation view of a security window applied to a single window (hereafter called a security window), installed to a sash, seen from the inside of the building, in a state where an inside channel's window is removed, according to a first embodiment of the invention. FIG. 2 is a partial perspective view of a security window that describes a lattice unit, moving guide, and coupling protrusion installed to an inside channel's window, according to a first embodiment of the invention. FIG. 3 is a top view of a window to which a security window is installed, in a state where the inside channel's window is open according to a first embodiment of the invention. FIG. 4 is atop view of a window to which a security window is installed, in a state where the inside channel's window is closed according to a first embodiment of the invention. FIG. 5 is an elevation view of a coupling protrusion of an inside channel's window to which an insert guide piece is installed, in a security window according to a first embodiment of the invention. FIG. 6 is an elevation view of an inside channel's window to which a lifting preventing unit is installed, in a security window according to a first embodiment of the invention.

(23) As shown in FIGS. 1 to 4, the security window according to a first embodiment of the invention includes a moving guide and a collapsible lattice unit, and is installed to sashes.

(24) Moving guide installation pieces 121 for supporting the moving guide 150 are fixedly installed at the top and bottom of the one side end.

(25) The lattice unit 160 includes a number of vertical rods 161, 162 and 163 and a number of links 164. In FIG. 1, the vertical rod leftmost is defined as a coupling vertical rod 161 and the vertical rod rightmost is defined as a fixed vertical rod 163. In addition, the vertical rods between the coupling vertical rod 161 and the fixed vertical rod 163 are defined as intermediate vertical rods 162.

(26) The vertical rods 161, 162 and 163 are connected to each other with the links 164. Each link 164 connects two adjacent vertical rods in such a way that one end is pivotally coupled to a location of one vertical rod and the other end is coupled into the other vertical rod, smoothly moving along in the lengthwise direction. Therefore, when vertical rods 161, 162, and 163 are pulled in the horizontal direction, the links 164 are unfolded and spread out in the space between the adjacent vertical rods. Conversely, when vertical rods 161, 162, and 163 are collected, the links 164 are folded.

(27) Each of the vertical rods 162, 162 and 163 of the lattice unit 160 forms insertion holes a 161a at the top and bottom portions through which the moving guide 150 is fitted. When the moving guide 150 is fitted through the insertion holes a 161a, one end is fixed to the moving guide installation piece 121 of the outside channel's window 120 and the other end is fixed to the sash 110. The coupling vertical rod 161 and the intermediate vertical rods 162 are movable along the moving guide 150. The fixed vertical rod 163 is fixed to the sash 110 so that it cannot be moved.

(28) The moving guide 150 is shaped as a pipe allowing for the passage of a cable of a number of twisted wires, so that it cannot be cut by a cutter, thereby preventing unauthorized entry.

(29) When the moving guide 150 and the lattice unit 160 are installed, the lattice unit 160 is collapsed or unfolded along the moving guide 150. The coupling vertical rod 161 of the lattice unit 160 is fixed to the inside channel's window 130.

(30) FIG. 2 is a partial perspective view of a security window before the inside channel's window 130 is installed to the window, seen from the inside of the building. As shown in FIG. 2, the coupling vertical rod 161 leftmost forms coupling holes 161b at the top and bottom portions on the front side. The frame 131 of the inside channel's window 130 forms coupling protrusions 132 on the right at locations of the top and bottom potions, corresponding to the coupling holes 161b of the coupling vertical rod 161. Each of the coupling protrusions 132 has a bent portion that is shaped as the letter L bent in the lower direction.

(31) When the moving guide 150 and the lattice unit 160 are installed to the sash 110, the coupling protrusions 132 of the inside channel's window 130 are hooked and locked to the coupling holes 161a of the coupling vertical rod 161. In general, in order to install the inside channel's window 130 to the sash 110, the top edge of the inside channel's window 130 is first fitted into the upper channel of the sash 110 and then the bottom edge is aligned and placed on the rail in the lower channel. Since the bottom of the inside channel's window 130 is placed on the rail in the lower channel of the sash 110 and the top of the inside channel's window 130 is inserted in the upper channel, the inside channel's window 130 is not removed from the sash 110.

(32) When the security window according to the invention is installed to the window, the inside channel's window 130 and the lattice unit 160 are coupled to each other in such a way that: the inside channel's window 130 is lifted in order to fit the top edge into the upper channel of the sash 110; the coupling protrusions 132 with bent potions are inserted into the coupling holes 161b of the coupling vertical rod 161; the bottom edge is placed on the rail in the lower channel of the sash 110; and the bent portions of the coupling protrusions 132 are hooked into the coupling holes 161b of the coupling vertical rod 161.

(33) When the inside channel's window 130 is installed to the sash 110, it may be difficult to align the coupling protrusions 132 of the inside channel's window 130 to the coupling holes 161b of the coupling vertical rod 161 of the lattice unit 160. The difficulty is resolved as follows. Referring to FIG. 5, when insert guide pieces 133 are installed to both sides of the coupling protrusions 132 of the inside channel's window 130, the coupling vertical rod 161 is guided the space therebetween, so that the protrusions 132 can be easily inserted into the coupling holes 161b.

(34) After the inside channel's window 130 and the lattice unit 160 are coupled to each other, there may be an attempt to separate the inside channel's window 130 from the lattice unit 160 by lifting it, and this attempt is prevented as follows. Referring to FIG. 6, after the inside channel's window 130 is coupled to the sash 110, the lifting preventing unit 134 installed to the top of the inside channel's window 130 is rotated so that one end contacts the sash 110, thereby preventing the inside channel's window 130 from being lifted. Since the inside channel's window 130 is not separated from the sash 110 until it is lifted, it cannot be separated from the lattice unit 160. Although the embodiment of the invention describes the lifting preventing unit 134 based on a rotatable type of piece, it should be understood that the invention is not limited to the embodiment. It will be appreciated that the invention may also employ various types of pieces if they prevent the inside channel's window 130.

(35) In a state where the inside channel's window 130 and the lattice unit 160 are coupled to each other, when the inside channel's window 130 is open as shown in FIG. 3, the vertical rods 161, 162 and 163 are spread out, with the links 164, blocking the opening of the window. Therefore, the structure can prevent unauthorized entry and children from falling out of the window. Meanwhile, when the inside channel's window 130 is closed as shown in FIG. 4, the vertical rods 161, 162 and 163 are collapsed so that the inside channel's window 130 can be completely shut.

(36) As shown in FIGS. 2 and 3, the moving guide installation pieces 121 are fixed to the inside wall of the frame of the outside channel's window 120 by bolt, and those portions are always hidden by the frame 131 of the inside channel's window 130. Therefore, a person's hand or tools cannot access the bolt of the moving guide installation pieces 121 from the outside of the building. That is, the bolt cannot be loosened from the outside of the building.

(37) Meanwhile, the security window is removed from the window from the inside of the building in such a way that: the lifting preventing unit 134 is unlocked; the inside channel's window 130 is lifted; and the coupling protrusions 132 of the inside channel's window 130 are separated from the coupling holes 161b of the coupling vertical rod 161 of the lattice unit 160. Since the security window can be separated from the inside of the building, it facilitates an emergency escape or a movement of objects.

Embodiment 2

(38) FIG. 7 is an elevation of an inside channel's window to which a lock and a pulling wire are installed, seen from the inside of the building, in a security window applied to a single window (hereafter called a security window), according to a second embodiment of the invention. FIG. 8 is an elevation of an inside channel's window to which a fixing bar is installed, seen from the outside of the building, in a security window according to a second embodiment of the invention. FIG. 9 is a perspective view of a lattice unit and a latching piece of a fixing bar in a security window according to a second embodiment of the invention. FIG. 10 is a partial perspective view of a lattice unit, a latching piece of a fixing bar, and a body in a security window according to a second embodiment of the invention. FIG. 11 is a cross-sectional view of FIG. 10, taken along line A-A. FIG. 12 is cross-sectional views showing states where a locking piece is coupled to and released from a body of a fixing bar installed to the inside channel's window in a security window according to a second embodiment of the invention. FIG. 13 is an elevation view of a window to which a security window is installed, in a state where the inside channel's window is open, seen from the outside of the building, according to a second embodiment of the invention. FIG. 14 is a top view of FIG. 13, describing the state in concept. FIG. 15 is an elevation view of a window to which a security window is installed, in a state where the inside channel's window is closed, seen from the outside of the building, according to a second embodiment of the invention. FIG. 16 is atop view of FIG. 15, describing the state in concept.

(39) Referring to FIG. 7 seen from the inside of the building, the inside channel's window 230 installs a lock 280 for controlling a pulling wire 270 to the left of the frame 231, and also a fixing bar 290 to the opposite. As shown in FIG. 8 seen from the outside of the building, the inside channel's window 230 installs the fixing bar 290 including a locking piece 192 to the left.

(40) The lock 280 includes a switch 281, a latching protrusion 282, and an unlatching button 283. The switch 281 connects the top to the pulling wire 270 and the bottom to the latching piece 281a. Since the latching protrusion 282 is fixed to the lower portion of the switch 281, when the switch 281 is lowered, the latching piece 281a of the switch 281 is latched to the latching protrusion 282, thereby preventing the switch 281 from being lifted up. Meanwhile, the unlatching button 283 pushes and unlocks the latching piece 281a of the switch 281 from the latching protrusion 282.

(41) The pulling wire 270 fixes one end to the switch 281 of the lock 280. The pulling wire 270 extends, along the inside space of the cover 232 installed to the frame 231, through the through-hole 231a formed on the outer surface, opposite the frame 231 of the inside channel's window 230, and is connected to a locking piece 292 of the fixing bar 290.

(42) The fixing bar 290 includes a body 291, fixed to the outside wall of the frame 231 of the inside channel's window 230, and a locking piece 292 movable up and down in a certain distance in the body 291. The body 291 forms coupling holes 291a, as shown in FIG. 10, for receiving the coupling protrusions 261a of the lattice unit 160, at the upper and lower portions, on the left, on FIG. 8. The body 291 is fixed to the frame 231 of the inside channel's window 230 by bolts 291d.

(43) Referring to FIG. 9, the locking piece 292 is shaped as the letter L. The locking piece 292 forms locking holes 292a at the upper and lower portions on the left wall and bolt guide holes 292b on the back wall. Referring the locking piece 292 and the body 291 shown in FIG. 10, the body 291 forms the bolt entry portion 291c and the bold fixing portion 291d on the front and back walls respectively, corresponding to the bolt guide holes 292b of the locking piece 292.

(44) Referring to FIG. 11 showing a cross-sectional view of FIG. 10, taken along line A-A, a screwdriver passes, from the inside of the building, to a bolt 293 through the bolt entry portion 291c of the front wall of the body 291, the bolt guide hole 292b of the locking piece 292, and the bolt fixing portion 291d of the back wall of the body 291, in order, and screws or unscrews the bold 293.

(45) When the locking piece 292 is unlocked and loosened (or lowered), the bolt guide hole 292b of the locking piece 292 faces the bolt fixing portion 291d of the body 291. A screwdriver enters the bolt entry portion 291c of the body 291 and screws or unscrews the bolt 293. On the contrary, when the locking piece 292 is locked (or lifted), the bolt guide hole 292b of the locking piece 292 is separated from the bolt fixing portion 291d of the body 291. In that case, although the screwdriver passes through the bolt entry portion 291c of the body 291, since the bolt fixing portion 291d of the locking piece 292 is hidden, it cannot unscrew the bolt in the bolt fixing portion 291.

(46) To resolve the problem, the locking piece 292 according to the embodiment of the invention is produced in such a way that the cross-section is shaped as the letter L. That is, one part of the L-bent portion of the locking piece 292 faces the coupling hole 291a of the body 291 and binds the coupling protrusion 261b. The other part covers the bolt fixing portion 291d of the back wall of the body 291.

(47) Like Embodiment 1, Embodiment 2 is implemented in such a way that: the lattice unit 260 includes a coupling vertical rod 261, intermediate vertical rods 262, and a fixed vertical rod 263 and links 264. Each of the vertical rods 261, 262, and 263 forms insertion holes a 261a at the top and bottom portions through which the moving guide 250 is fitted. One end of the moving guide 250 is fixed to the sash 210 and the other end is fixed to the outside channel's window 220 through the inserting hole 291b of the body 291 and the insertion hole c 292c of the locking piece 292. The fixed vertical rod 263 is fixed to the sash 210. The coupling vertical rod 261 forms coupling protrusions 261b on the side wall to be inserted into the fixing bar 290.

(48) As shown in FIG. 10 and diagram (a) of FIG. 12, in a state where the coupling protrusion 261b of the coupling vertical rod 261 is inserted through the coupling hole 291a of the body 291 of the fixing bar 290 and the locking hole 292a of the locking piece 292, when the switch 281 of the lock 280 is pulled down to pull the pulling wire 270, the locking piece 292 is lifted up, so that the L-bent portion of the coupling protrusion 261b is locked into the locking hole 292a of the locking piece 292 and bound thereto as shown in diagram (b) of FIG. 12. Therefore, the coupling vertical rod 261 is coupled to the fixing bar 290 installed to the inside channel's window 230.

(49) Meanwhile, when the unlatching button 283 of the lock 280 is pressed, the rear end of the unlatching button 283 pushes the latching piece 281a of the switch 281, thereby unlocking the switch 281. Therefore, the pulling wire 270 is pulled by the weight of the locking piece 292 and the switch 281 is lifted up. As shown in diagram (a) of FIG. 12, the locking piece 292 is lowered, thereby unlocking the coupling protrusion 261b of the locking piece 292. In that case, the coupling vertical rod 261 of the lattice unit 260 is separated from the fixing bar 290 of the inside channel's window 230.

(50) After the installation of the security window according to the embodiment of the invention, referring to FIG. 13 showing an elevation view of the security window seen from the outside of the building and FIG. 14 showing the top view, when the inside channel's window 230 is open in a state where the coupling vertical rod 261 is coupled to the fixing bar 290 as the switch 281 of the lock 280 is pulled, the vertical rods 261, 262 and 263 of the lattice unit 260 are spread out on the opening of the window with the links 264 connecting the vertical rods.

(51) On the contrary, as shown in FIG. 15 showing an elevation view of the security window seen from the outside of the building and FIG. 16 showing the top view, when the inside channel's window 230 is closed, the vertical rods 261, 262 and 263 of the lattice unit 260 are closely collapsed, so that the inside channel's window 230 is completely closed.

(52) The embodiment is implemented in such a way that the coupling vertical rod 261 of the lattice unit 260 is coupled to or separated from the fixing bar 290 of the inside channel's window 230 by operating the switch 281 of the lock 280. That is, after the coupling protrusion 261b of the lattice unit 260 is inserted through the coupling hole 291a of the fixing bar 290 and the locking hole 292a, when the switch 281 is lowered and fixed so that the latching piece 281a is locked to the latching protrusion 282, the lattice unit 260 is spread out or collapsed as the inside channel's window 230 is open or closed, thereby preventing unauthorized entry or falls out of the window. When the fixing bar 290 and the lattice unit 260 are disconnected to each other as the unlatching button 283 of the lock 280 is pushed, although the inside channel's window 230 is open, the lattice unit 260 is not spread out, so that the opening of the window allows for a movement of objects and an emergency escape.

(53) Although the inside channel's window 230 is open while the lattice unit 260 is fixed to the inside channel's window 230, a person's hand cannot extend to reach the lock 280 installed to the end opposite the open space and thus cannot operate the switch 281, from the outside of the building. In addition, when the locking piece 292 is lifted up in a state the switch 281 is locked, the bolt 293 fixing the body 291 to the frame 231 of the inside channel's window 230 is completely hidden by the locking piece 292, and thus cannot be loosened. Therefore, the security window cannot be removed from the window from the outside of the building.

Embodiment 3

(54) FIG. 17 an elevation view of a security window applied to a single window (hereafter called a security window), installed to a sash, according to a third embodiment of the invention.

(55) The embodiment is a security window that is installed to a sash 310 to cover the opening of a window, regardless of the outside channel's window or the inside channel's window.

(56) Referring to FIG. 17, moving guides 350 are installed to the top and bottom portion of the sash 310, extending in the horizontal direction of the opening of the window. A lattice unit 360 is movably installed to the moving guides 350. The lattice unit 360 includes a coupling vertical rod 361, intermediate vertical rods 362, fixed vertical rod 363 and links 364. When seen from FIG. 7, the fixed vertical rod 363 is fixed to the left of the sash 310. The coupling vertical rod 361 forms a coupling protrusion 361b on the right wall. The coupling protrusion 361b of the coupling vertical rod 361 is inserted into a locking piece (not shown) and a body 391 of a fixing bar 390 fixed to the right of the sash 310. The coupling protrusion 361b is bound to or unlocked in the same principle as the fixing bar 290 of Embodiment 2 is operated. That is, the coupling protrusion 361b is bounded in such a way that the pulling wire 370 is pulled by operating the lock 380 and thus the locking piece (not shown) is lifted up. The coupling protrusion 361b is also unlocked in such a way that the locking piece (not shown) is lowered by pushing the unlatching button of the lock 380.

(57) Since the security window according to the embodiment of the invention is installed to the sash 310 of a window in such a way that the lattice unit 360 covers the opening of the window regardless of whether the inside channel's window is opened or closed, it can prevent unauthorized entry and falls out of the window. In addition, since the lattice unit 360 is separated from the fixing bar 390 by pushing the unlatching button of the lock 380 if necessary, the opening of the window allows for a movement of objects and an emergency escape if the lattice unit 360 is collapsed.

(58) When the lock 380 is installed to a location apart from the sash 310, it cannot be operated by a person from the outside of the building.

Embodiment 4

(59) FIG. 18 is an elevation view of a security window applied to a single window (hereafter called a security window), installed to a sash, according to a fourth embodiment of the invention.

(60) The embodiment is a security window that is installed to a sash 410 to cover the opening of a window. Unlike the collapsed type lattice unit of Embodiment 3, the lattice-fixed security window 460 is installed to the sash 410 in such a way that one end is pivotally fixed to one side of the sash 410, as a hinge 463. The lattice-fixed security window 460 forms a coupling protrusion 462 on the other end, protruded to the sash 410. A body 491 of a fixing bar 490, operated in the same principle as Embodiment 2, is fixed to the sash 410. When the coupling protrusion 462 is inserted into the fixing bar 490 and a switch of the lock 480 is lowered, the pulling wire lifts the locking piece, so that the lattice-fixed security window 460 is fixed to the fixing bar 490, in the same way as Embodiment 2.

(61) When the lock 480 is installed to a location apart from the sash 410, it cannot be operated by a person from the outside of the building. When the unlatching button of the lock 480 is pushed from the inside of the building, the lattice-fixed security window 460 is separated from the fixing bar 490 and rotated to leave the opening of the window open.

(62) As described above, the security window according to the invention is applied to an existing single window and blocks the opening of the window, thereby preventing unauthorized entry and falls out of the window. The security window can be separated from the window from the inside of the building, if necessary, it can allow for a movement of an object or an emergency escape through the opening of the window. Meanwhile, since the security window cannot be removed from the window from the outside of the building, it can prevent any intrusion by persons with malicious intent from the beginning.

(63) Although exemplary embodiments of the invention have been described in detail above, it should be understood that many variations and modifications of the basic inventive concept herein described, which may be apparent to those skilled in the art, will still fall within the spirit and scope of the exemplary embodiments of the invention as defined in the appended claims.