KR20090067706A - Preventing device for a breakaway, sliding door therewith and guide rail installed wih a locker - Google Patents

Abstract

A separation prevention system, a sliding door equipped with a separation prevention system, and a guide rail equipped with a locking device are provided to prevent the separation of a sliding door when vertical force to the traveling direction of a sliding door occurs while a sliding door is closed, and to open and close a sliding door smoothly by minimizing frictional force while traveling. A separation prevention system(2) of a sliding door moves along a guide rail forming a sill, and contains two support plates(21,24) installed parallel, insertion plates(22,23) inserted and installed to be spaced out from each other between the two support plates to keep the distance between the two support plates, a shaft(25) installed to the space between the insertion plates to cross the support plates, and a separation prevention plate provided with a straight long hole where the shaft passes through to move up and down or rotate on the shaft.

Description

Depreciation device for a breakaway, sliding door therewith and guide rail installed wih a locker}

1 is a perspective view of a departure prevention apparatus of the first embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along line BB ′ of FIG. 1.

3 is a front view of the first embodiment.

4 is a cross-sectional view of the separation prevention device of FIG. 1 installed in a sliding door.

5 is a perspective view of a second embodiment of the present invention.

6 is a cross-sectional view taken along line B-B 'of the present invention.

7 is a front view of a second embodiment of the present invention.

8 is a perspective view of a third embodiment of the departure prevention apparatus of the present invention.

FIG. 9 is a cross-sectional view taken along the line BB ′ of FIG. 8.

10 is a front view of a third embodiment of the departure prevention apparatus of the present invention.

11 is a cross-sectional view of a third embodiment of the departure prevention apparatus of the present invention installed in the sliding door.

Figure 12 is a perspective view of the hook used in the third embodiment of the escape preventing device of the present invention.

Figure 13 is a perspective view of a sliding door system in which the fourth embodiment of the departure prevention apparatus of the present invention is installed.

14 is a cross-sectional view taken along the line AA ′ of FIG. 13.

FIG. 15 is a configuration diagram for describing an operating state of the hook of FIG. 13.

Figure 16 is a perspective view of a fifth embodiment of the departure prevention apparatus of the present invention.

FIG. 17 is a perspective view of a guide rail provided with a locking device coupled with the release preventing device of FIG. 16.

18 is a front perspective view of the locking device of FIG. 17.

19 is a rear perspective view of the locking device of FIG. 17.

20 is an assembled perspective view illustrating the installation process of FIG. 17.

FIG. 21 is a cross-sectional view of the locking device and the guide rail in a state where the stopping plate of the release preventing device of FIG. 16 is not inserted.

FIG. 22 is a cross-sectional view of the locking device and the guide rail in a state where the stopping plate of the release preventing device of FIG. 16 is inserted.

Figure 23 is a perspective view showing a state in which the sliding doors with the locking device coupled to the departure prevention device of the present invention is closed.

24 is a perspective view illustrating a process of closing the sliding door of FIG. 23.

FIG. 25 is a perspective view illustrating the operation of the locking device and the release prevention device of FIG. 23.

FIG. 26 is a cross-sectional view taken along the line AA ′ of FIG. 23.

27 is a perspective view illustrating a state in which the sliding doors having the release prevention device of the present invention in combination with the locking device of another embodiment are closed.

FIG. 28 is a perspective view illustrating a process of closing the sliding door of FIG. 27.

FIG. 29 is a perspective view illustrating the operation of the locking device and the release prevention device of FIG. 27. FIG.

30 is a cross-sectional view taken along the line AA ′ of FIG. 27.

The present invention provides a release preventing device that prevents the sliding door from deviating from the movement path when a force in a direction perpendicular to the moving direction of the sliding door is applied to the sliding door, a sliding door provided with the release preventing device, and a guide rail provided with a locking device. It is about.

Sliding doors are installed in the elevator cage and the elevator platform for safety, but if a vertical force is applied to the sliding direction of the sliding door, the sliding door will be pushed in the vertical direction, which may cause an accident that a person falls into the cage lift. .

In order to prevent the sliding door from coming off, a conventional guide shoe which is partially inserted into the groove of the guide rail which forms the seal of the sliding door is installed in the lower part of the sliding door, but the length of the guide shoe inserted into the groove of the guide shoe is small. The sliding door is released even with a small force, and when the insertion length is large, a large friction force acts between the groove and the guide shoe, causing many problems in sliding opening and closing.

The present invention has been made to solve this problem, and an object of the present invention is to provide an apparatus for smoothly opening and closing the sliding door while not being pushed against a force perpendicular to the sliding direction in the sliding door.

A specific feature of the present invention for the above object is a separation door of the sliding door to move along the guide rail to form a seal (sill): A shaft installed perpendicular to the direction of movement of the sliding door; A through hole through which the shaft penetrates is formed, and a portion thereof includes a plate member inserted into a groove of the guide rail.

In the present invention, the plate member is preferably circular or elliptical.

In addition, in the present invention, the shape of the through hole is preferably a long hole having a large diameter in one direction.

Further, in the present invention, a locking groove opened in the closing direction of the sliding door is formed in a lower portion of the through-hole of the plate member, and a cross member inserted into the locking groove when the sliding door is closed in the groove of the guide rail. Is preferably installed.

In addition, in the present invention, when the sliding door is closed, it is preferable that the long hole is formed in the longitudinal direction of the guide rail on the bottom surface of the groove centered on the position corresponding to the lower portion of the shaft.

In addition, in the present invention, the first support plate is installed on one side lower end of the sliding door; It further comprises a second support plate having a side portion for maintaining a distance parallel to the first support plate, the axis preferably traverses the first support plate and the second support plate.

In addition, in the present invention, it is preferable that the packet installation portion of the guide shoe is formed under the first support plate or the second support plate, and the packet installation portion of the packet is installed in the packet installation portion.

In addition, another feature of the present invention is a sliding door that moves along a straight track to open and close: an axis projecting perpendicularly to a moving direction at one lower end of the sliding door; The shaft penetrates and has a long hole having a diameter in one direction, and includes a plate member that rotates or moves up and down about the shaft, and has a lower end projecting downward than a lower surface of the sliding door.

In addition, another feature of the present invention is to form a seal (sill) of the sliding door is installed, the departure prevention device, in the guide rail is installed with a locking device coupled to the separation prevention device: the release prevention device is one side of the sliding door A locking groove which is rotated or moved up and down about an axis installed at a lower end thereof, and includes a locking groove having an opening formed in a closing direction of the sliding door at a lower portion thereof, and the locking device includes an insertion member inserted into the locking groove when the sliding door is closed. It is to include.

In addition, another feature of the present invention is to form a seal (sill) of the sliding door is installed, the departure prevention device, in the guide rail is installed with a locking device coupled to the separation prevention device: the release prevention device is one side of the sliding door It is installed in the lower end, and includes a locking plate protruding in the closing direction of the sliding door, The locking device is installed in the groove is installed in the longitudinal direction of the guide rail and the locking plate is closed in the closing of the sliding door It is a tube inserted.

In addition, another aspect of the present invention provides a locking device installed in a guide rail forming a seal of a sliding door: installed in the groove of the guide rail, an opening is formed in the upper surface, the bottom surface and the bottom surface of the groove It is made of a tubular body fastened by bolts to enable the vertical flow.

In addition, another feature of the present invention is a locking device coupled to the separation prevention device consisting of a plate-like member protruding from the lower surface of the sliding door; The locking device is installed on a bottom surface to which the sliding door moves, and a cutting groove into which the plate member is inserted when the sliding door is closed is formed.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a departure prevention apparatus of a first embodiment of the present invention, Figure 2 is a cross-sectional view taken along line BB 'of Figure 1, Figure 3 is a front view of the first embodiment, Figure 4 is a sliding prevention device of Figure 1 Sectional view of the door.

A guide rail 3 is formed below the sliding door 1 to form a door seal, and a groove 31 is formed in the guide rail 3 in the longitudinal direction of the guide rail 3, and the sliding door In the lower part of (1), the separation prevention apparatus 2 is provided.

The separation prevention device 2 is mutually provided between the two support plates 21 and 24 installed in parallel so that the gap between the two support plates 21 and 24 is maintained. Shafts 25 installed so as to cross between the support plates 21, 24 in spaces in which the insertion plates 22, 23, insertion plates 22, 23 are spaced apart from each other. And, the straight hole 26 is formed through the shaft 25 is formed of the departure prevention plate 27 that moves up and down or rotates around the shaft 25. At this time, the departure prevention plate 27 is made of a disc or oval plate and the long hole 26 is formed passing through the center of the departure prevention plate 27.

The support plate 21 of the release prevention device is screwed or welded to contact the lower side of the sliding door 1, and one end of the long hole 26 of the release prevention plate 27 in a state where the sliding door 1 is closed. The outer circumferential surface adjacent to the is placed upward, the outer circumferential surface adjacent to the other end of the long hole 26 is placed downward, the downward outer circumferential surface is in contact with the bottom surface of the groove 31. Therefore, when a force perpendicular to the moving direction of the sliding door 1 acts on the sliding door 1, the release preventing plate 27 comes into contact with the side wall forming the groove 31 so that the sliding door 1 is normally operated. To prevent deviation from location.

When the outer circumferential surface of the lower portion of the separation prevention plate 27 comes into contact with the portion of the foreign matter accumulated in the recess 31 during movement of the sliding door 1, the separation prevention plate 27 is formed on the shaft 25. It is to be moved up or rotated around. Therefore, the sliding door 1 moves smoothly without friction.

FIG. 5 is a perspective view of a second embodiment of the present invention, FIG. 6 is a cross-sectional view taken along the line BB ′ of FIG. 5, and FIG. 7 is a front view of the second embodiment of the present invention.

In the separation preventing device of the second embodiment, the guide shoe mounting plates 42, 43, 44, and 45 protrude downward from the lower ends of both sides, and are installed in contact with the lower side of the sliding door 1. Shorter than the support plate 41 and the support plate 41, the support plate 46 is installed in parallel at regular intervals, and the insertion plate 47 is inserted at intervals between the support plate 41 and the support plate 46 ), (48), (49), shafts 50, 51, and shafts 50, (, which are installed transversely in the space portion where the insertion plates between the support plates 41, 46 are not installed. A long hole is formed so that 51 passes therethrough, and is movable up, down, or rotatable about an axis, and is installed on the support plates 41 and 46, and a part thereof protrudes downward from the lower ends of the support plates 41 and 46 to guide rails. (3) is made of a separation prevention plate 52, 53 which is inserted into the groove.

A packet (not shown) of the guide shoe, which is made of synthetic resin of the guide shoe and a part of which is inserted into the groove 31 of the guide rail 3, includes a packet mounting plate 42, 43, a packet mounting plate 44, ( 45) is installed.

Moreover, it is preferable that the support plate 41 is larger than the support plate 46, and the center of the length of the support plate 41 coincides with the center of the length of the support plate 46.

In addition, the separation prevention plates 52 and 53 provided between the support plates 41 and 46 form the same structure as that of the separation prevention plate 27 of the first embodiment.

Thus, the separation between the support plate 41 and the support plate 46, the separation preventing plate 52, 53, which is moved up and down or rotates about the shafts 50 and 51, are separated from the first embodiment It can reinforce the prevention ability, and by installing the guide shoe at the lower end of both ends of the support plate 41 can reduce the number of assembly process.

 Figure 8 is a perspective view of a third embodiment of the departure prevention apparatus of the present invention, Figure 9 is a sectional view taken along the line BB 'of Figure 8, Figure 10 is a front view of a third embodiment of the departure prevention apparatus of the present invention, Figure 11 A third embodiment of the release preventing device of the present invention is a cross-sectional view of the state installed in the sliding door, Figure 12 is a perspective view of the hook used in the third embodiment of the release preventing device of the present invention.

The separation prevention device 60 of the third embodiment is installed at the lower side of the sliding door 1, and the locking groove 71 of the locking ring 70 of the separation prevention device 60 when the sliding door 1 is closed. Since the bolt 32 passing through the groove 31 of the guide rail 3 is inserted into the guide rail 3, the detachment of the sliding door 1 is prevented.

The separation prevention device 60 is inserted into and inserted between the support plates 61 and 62 to be spaced apart from the two support plates 61 and 62 installed at the lower side of the sliding door 1 at intervals. Shaft 65 consisting of bolts installed across the space between the support plates 61 and 64 in which the 63, 64, insertion plates 63 and 64 are not inserted, and the shaft 65 It has a long hole 72 formed in the vertical direction to penetrate, and consists of a locking ring 70 formed with a "c" shaped locking groove 71 opened in the closing direction of the sliding door in the lower hole.

In addition, when the sliding door 1 is closed, the bolt 32 is provided in the groove 31 of the guide rail 3 so that it can be inserted into the locking groove 71 of the locking ring 70 of the separation prevention device 60. Is installed.

As such, the locking ring 70 of the release preventing device 60 is fastened to the bolt 32 of the guide rail 3 when the sliding door 1 is closed, thereby preventing the sliding door 1 from being detached and sliding door. During the operation of opening and closing (1), foreign matter inside the recess 31 is formed because the up, down and rotational movements are made around the shaft 65 passing through the long hole 72 of the locking ring 70. Even when this is accumulated, friction does not occur between the locking ring 70 and the guide rail 3, thereby making the smooth opening and closing operation.

FIG. 13 is a perspective view of a sliding door system in which a fourth embodiment of the release preventing device of the present invention is installed, FIG. 14 is a cross-sectional view taken along line AA ′ of FIG. 13, and FIG. 15 is a view illustrating an operating state of the locking ring of FIG. 13. It is a block diagram for.

In FIG. 13, the entrance and exit of the platform is opened and closed by the left and right movement of the two sliding doors 1 and 1 ′. On the lower side portions of the sliding doors 1 and 1 ', the separation prevention devices 80 and 90 of the same structure are respectively installed, but the locking grooves 82 formed in the locking rings 81 of the separation prevention device 80 are provided. The opening direction of the locking groove 92 formed in the locking ring 91 of the separation prevention device 90 is opposite to each other. That is, the opening direction of the locking groove formed in the locking ring is formed in the closing direction of the sliding doors 1 and 1 '.

Further, when the sliding doors 1 and 1 'are closed, the grooves 31 of the guide rails 3 to which the engaging rings 81 and 91 of the separation preventing devices 80 and 90 reach. Through holes 83 and 93 are formed on the bottom surface, and locking bolts 84 and 94 which can be inserted into the locking grooves 82 and 92 are respectively installed.

The separation prevention device 80 is installed at the lower side of the sliding door 1 and has a space between the support plate 87 and the support plate 87 on which the packets 85 and 86 of the guide shoe are installed at the lower ends of the sliding door 1. A shaft 89 formed of an outer plate 88 formed of a bent portion coupled to the support plate 87 and bent from both ends of the side portion and the side portion installed so as to be fastened to the support plate 87 from the side of the outer plate 88; A long hole 100 through which the shaft 89 penetrates is formed at an upper portion thereof, and a locking ring 81 having a locking groove 82 formed at an opening in a closing direction of the sliding door 1 is formed at a lower portion thereof.

As shown in FIG. 15, since the lower end of the catching ring 81 is in contact with the bottom surface of the groove 31 during movement to close the sliding door 1, the shaft ( 89 is positioned, but in the closed state, the lower end of the locking ring 81 passes through the through hole 83 formed in the bottom surface of the recess 31 to protrude to the bottom of the bottom surface. It is located at the upper end of 100). As the shaft 89 moves up and down the long hole 100 as described above, the closing operation occurs, and the lower end of the locking ring 81 protrudes downwardly through the through hole 83 to prevent the sliding door from being separated. Doubles your ability.

FIG. 16 is a perspective view of a fifth embodiment of the release preventing device of the present invention, FIG. 17 is a perspective view of a guide rail provided with a locking device coupled to the release preventing device of FIG. 16, and FIG. 18 is a front perspective view of the locking device of FIG. 17. 19 is a rear perspective view of the locking device of FIG. 17, FIG. 20 is an assembled perspective view illustrating the installation process of FIG. 17, and FIG. 21 is a locking device in a state where the stopping plate of the release preventing device of FIG. 16 is not inserted. FIG. 22 is a cross-sectional view of the guide rail, and FIG. 22 is a cross-sectional view of the locking device and the guide rail in a state where the stopping plate of the release preventing device of FIG. 16 is inserted.

The departure prevention device 110 illustrated in FIG. 16 protrudes in the closing direction of the sliding door 1 from the coupling part 111 and the coupling part 111 coupled to the lower side of the sliding door 1 to guide when closing. It is provided with a locking plate 112 is inserted into the locking device 120 installed in the groove 31 of the rail (3).

The locking device 120 installed in the groove 31 of the guide rail 3 includes a tubular body 123 fastened to be vertically movable by fixing bolts 121 and 122.

The upper surface is longer than the lower surface to facilitate insertion of the locking plate 112 of the locking device 120 of the tubular body 123, and is formed in a curved surface between the lower surface end and the upper surface end. The lower surface of the tubular body 123 is in contact with the bottom surface of the groove 31 of the guide rail 3 when the locking plate 112 is not inserted, and the locking plate 112 when the locking plate 112 is inserted. The tube 123 is moved upward. In addition, an opening cut in the longitudinal direction of the tubular body 123 is formed at the center of the upper surface of the tubular body 123, and large long holes 124 and 125 having a large diameter in the longitudinal direction are formed in the bottom surface of the tubular body 123. The fixing bolts 121 and 122 are inserted through the long holes 124 and 125 to be coupled to the bottom surface of the recess 31. At this time, the heads 126 of the fixing bolts 121 and 122 are installed to protrude upwardly and spaced apart from the lower surface of the tubular body 123 so that the locking plate 112 is inserted into the tubular body 123, FIG. 22. As described above, the tubular body 123 moves upward and downward along the fixing bolts 121 and 122, and the moving distance is limited by the head 126.

FIG. 23 is a perspective view illustrating a state in which sliding doors in which a locking device coupled with the release preventing device of the present invention is installed are closed, FIG. 24 is a perspective view illustrating a process in which the sliding door of FIG. 23 is closed, and FIG. 25 is in FIG. 23. FIG. 26 is a perspective view illustrating the operation of the locking device and the release prevention device shown in FIG. 26, and FIG. 26 is a cross-sectional view taken along line AA ′ of FIG. 23.

The sliding doors 130 and 130 ′ of FIGS. 23 and 24 are formed of a conventional glass door provided with a metal support at the bottom thereof, and sliding doors 130 and 130 ′ on the bottom surface of the sliding door 130 and 130 ′. Locking devices 132, 133, 132 ′, and 133 ′ coupled with the drop-off prevention devices 131 and 131 ′ installed in the lower part of the buried part are embedded.

Since the separation prevention devices 131 and 131 ′ have the same structure as the guide shoe installation portions at both ends of the separation prevention device shown in FIG. 5, the description thereof will be omitted. The separation prevention device 131 installed at the lower side of the sliding door 130 is provided with separation prevention plates 134 and 135 spaced apart or rotated about an axis, and the sliding door 130 is closed. Locking device 132, (133) formed in the bottom portion of the lower portion of the release prevention plate 134, 135 is inserted into the bottom surface of the lower portion where the release prevention plate 134, 135 is located in the Is installed. Similarly, when the sliding door 130 'is closed, the locking devices 132' and 133 'into which the lower end portions of the release preventing plates 134' and 135 'are inserted are embedded.

The locking device 132 is formed of a cylindrical body 140 and a disc portion 141 that is bent outward from the upper end of the body 140, the body 140 and the disc portion 141 to the sliding door 130. A straight cut groove 142 is formed in accordance with the moving direction of the. The disc portion 141 and the bottom surface are fastened by bolts and fixed, and the release preventing plate 134 is inserted into the cutout groove 142 when the sliding door 130 is closed to prevent the sliding door 130 from being separated. do.

FIG. 27 is a perspective view illustrating a state in which sliding doors in which the release prevention device of the present invention is installed are closed in combination with a locking device of another embodiment, FIG. 28 is a perspective view illustrating a process in which the sliding door of FIG. 27 is closed, and FIG. 29. FIG. 27 is a perspective view illustrating the operation of the locking device and the release preventing device of FIG. 27, and FIG. 30 is a cross-sectional view taken along line AA ′ of FIG. 27.

The cutting grooves of the locking device shown in FIGS. 23 to 26 are formed lower than the bottom surface, but the cutting grooves of the locking devices 150, 151, 150 ', and 151' shown in FIGS. It is formed higher than the bottom surface, between the wall surface and the bottom surface forming the incision groove is made of a structure that prevents people from being caught by the locking device made of a curved member.

Locking device 150, 151 is installed on the bottom surface to be inserted into the release prevention plate 134, 135, when the sliding door 130 is closed, locks 150 ', (151') When the sliding door 130 'is closed, it is installed on the bottom surface to be inserted into the release prevention plate (134', 135 ').

Locking device 150 is a curved surface between the outer side of the disk portion 163 and the outer circumferential surface of the disk portion 163 from the side wall 161, 162 is formed upwardly formed side wall 161, 162 to form a cut groove in the center Consists of fastening bolts 166 and 167 fastened to the bottom surface from the curved surface portion 164 and the curved surface portion 164 formed.

According to the present invention having the above object and configuration, the sliding door is prevented from being released when a vertical force is applied to the moving direction of the sliding door in a state in which the sliding door is closed, and sliding by minimizing the friction force during the movement. Smooth opening and closing operation of the door.

Claims (18)

In the anti-separation device of a sliding door moving along a guide rail forming a seal: An axis installed perpendicularly to the moving direction of the sliding door; The through-holes through which the shaft is formed are formed, the separation prevention device of the sliding door, characterized in that it comprises a plate-like member is inserted into the groove of the guide rail. The method of claim 1, wherein the plate-like member is a departure prevention device of the sliding door, characterized in that the circular or oval. The apparatus of claim 1, wherein the through hole has a long diameter in one direction. In the lower part of the through-hole of the plate-like member is formed in the locking groove which is opened in the closing direction of the sliding door, the groove of the guide rail is provided with a cross member inserted into the locking groove when the sliding door is closed. A departure prevention device of the sliding door, characterized in that. The method according to any one of claims 1 to 4, characterized in that when the sliding door is closed, a long hole is formed in the longitudinal direction of the guide rail on the bottom surface of the groove centered on the position corresponding to the lower portion of the shaft. Sliding door lock prevention device. The method according to any one of claims 1 to 4, A first support plate installed at one lower end of the sliding door; And a second support plate having a side portion for maintaining a distance parallel to the first support plate, wherein the shaft traverses the first support plate and the second support plate. The apparatus of claim 5, wherein the lower portion of the first support plate or the second support plate is provided with a packet installation portion of the guide shoe, and the packet installation portion is provided with a packet of the guide shoe. In a sliding door that moves along a straight track and opens and closes: A shaft protruding perpendicularly to the moving direction at one lower end of the sliding door; The shaft is penetrated and the long hole is formed in a large diameter in one direction, the sliding door characterized in that it comprises a plate-like member that rotates or moves up and down about the axis and the lower end protruding downward than the lower surface of the sliding door. The sliding door of claim 8, wherein the plate member is circular or elliptical. 10. The sliding door of claim 9, wherein the plate-shaped member has a locking groove which is opened in the closing direction of the sliding door under a through hole of the plate-shaped member. The method according to any one of claims 8 to 10, A first support plate installed at one lower end of the sliding door; And a second support plate having sides that maintain a spacing parallel to the first support plate, wherein the axis traverses the first support plate and the second support plate, and the plate member is between the first support plate and the second support plate. Sliding door, characterized in that installed on. The sliding door according to claim 11, wherein the first support plate or the second support plate is provided with a packet installation portion of a guide shoe, and the packet installation portion is provided with a packet of a guide shoe. In the guide rail to form a seal (sill) of the sliding door is installed, the separation prevention device, the locking device is coupled to the release prevention device: The separation prevention device is rotated or moved up and down about an axis installed on one side lower end of the sliding door, and includes a locking groove formed in the lower portion of the sliding door in the closing direction, And the locking device includes an insertion member inserted into the locking groove when the sliding door is closed. In the guide rail to form a seal (sill) of the sliding door is installed, the separation prevention device, the locking device is coupled to the separation prevention device: The separation prevention device is installed on one side lower end of the sliding door, and includes a locking plate protruding in the closing direction of the sliding door, The locking device is installed in the groove that is installed in the longitudinal direction of the guide rail guide rail is installed, characterized in that the locking body is inserted into the locking plate when the sliding door is closed. The guide rail as set forth in claim 14, wherein the tubular body is fastened to the bottom surface of the groove by bolts to enable vertical flow. The guide rail as set forth in claim 15, wherein an opening is formed in an upper surface of the tubular body in a longitudinal direction of the tubular body. In the locking device installed on the guide rail forming the seal of the sliding door: Locking device is installed in the guide rail forming the seal, characterized in that the opening is formed in the groove of the guide rail, the upper surface is formed, the lower surface and the bottom surface of the groove is fastened with a bolt so as to be able to flow up and down. In the locking device coupled with the separation prevention device consisting of a plate-like member protruding from the lower surface of the sliding door; The locking device is installed on the bottom surface of the sliding door is moved, characterized in that the locking device is formed with a cut-out groove for inserting the plate member when the sliding door is closed.

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