KR20110079474A

KR20110079474A - Locking device

Info

Publication number: KR20110079474A
Application number: KR1020100074883A
Authority: KR
Inventors: 김재형
Original assignee: 쓰리웨이테크놀러지(주)
Priority date: 2009-12-30
Filing date: 2010-08-03
Publication date: 2011-07-07

Abstract

PURPOSE: A locking device is provided to prevent damage to the locking device and to remarkably improve durability by limiting the forceful retreat of a locking unit. CONSTITUTION: A locking device(100) comprises a housing(10), a locking unit(20), one or more groove units, and one or more protrusion units. The housing is coupled to a door(1). The locking unit is movably coupled to the housing and locks and unlocks the door. Both surfaces of the locking unit are inclined. The groove and protrusion units are formed on the inward surface or outward surface of the locking unit. Elastic members are inserted into the groove units.

Description

Locking device

The present invention relates to a locking device, and more particularly, to a locking device that can open or close a specific space, such as a front door, a car door and a safe.

The locking device is widely used as being configured to open or close a specific space, such as a door of a house, a safe, a door of a vehicle, and the like. Among the locking devices, the door lock device is widely used in general homes or public buildings. Typically, locks are used for entrance doors, bank vaults, and access controls to restrict access to specific areas. Recently, a digital door lock device that can lock and unlock a door by linearly moving a clamp by operating a motor or a solenoid after authenticating a user through a password input or a fingerprint recognition method has been widely used.

One example of such a door lock device is shown in FIGS. 1 and 2. Referring to FIGS. 1 and 2, the door lock device 100 ′ includes a housing 10 ′ coupled to the door 1 and a direction protruding and immersed with respect to the housing 10 ′ (horizontal direction in FIG. 1). It is linearly movable and has a clamp 20 'made of a metallic material. A motor or solenoid (not shown) is installed in the housing 10 '. In addition, the power transmission means is installed in the housing 10 ', and the clamp 20' is linearly driven when the motor or the solenoid is operated. In addition, the cap member 30 'is provided in the indoor side part of the door post 2. The cap member 30 'is fixed to the door post 2 by bolts. The cap member 30 'is formed with a fastener inserting hole 31', and the fastener inserting hole 31 'is opened to both sides along the linear movement direction of the fastener 20'. Then, in the state where the cap member 30 'is fixed to the door holder, the clamping hole insertion hole 31' is blocked by the door holder 2, and is opened to only one side along the linear movement direction of the clamp 20 '. That is, even if the clamp 20 'is inserted into the clamp insertion hole 31', even if it moves in a direction orthogonal to the linear movement direction of the clamp 20 ', it is blocked by the door holder 2 or the cap member 30'. This prevents the linear movement of the clamp 20 '.

In the door lock device configured as described above, the clamp 20 'is linearly driven to enter and exit the clamp insertion hole 31'. When the clamp 20 'is inserted into the clamp insertion hole 31', the door 1 is locked, and the clamp 20 'is separated from the clamp insertion hole 31' and immersed in the housing 10 '. The door 1 is unlocked.

On the other hand, in the locked state of the door 1 as shown in Figure 1, there is a limitation that physical hacking is possible through the gap (3) formed between the door 1 and the door holder (2). That is, when the clamp 20 'is flipped after inserting a long elongated hacking tool (not shown) into the gap 3, the clamp 20' is deformed and the door jam is broken or the housing of the locking device is broken. Door 1 is forcibly unlocked. In particular, when the clamp is turned down, the clamp is moved toward the door as shown in FIG. 3, so that the clamp is slid in line with the inner surface of the clamp insertion hole 31 ′, so that the clamp 20 'is easily It can be deformed while moving.

As such, the conventional door lock device has a limitation in that the clamp 20 'can be easily deformed at the time of physical hacking, and thus is very vulnerable to physical hacking.

The present invention has been made to solve the above problems, an object of the present invention, even if a physical hack occurs, the locking portion protruding to the inner surface of the clamp insertion hole is caught in the groove or protrusion formed on the side of the clamp so that the clamp is forced The structure is improved so that the retraction is limited to provide a locking device that can effectively block the deformation of the clamp and the damage of the locking device and to significantly improve the durability of the locking device.

In addition, the object of the present invention, even if physical hacking occurs, the structure is improved so that the locking portion protruding to the inner surface of the clamp insertion hole is caught on the inclined portion formed on the side of the clamp so that the forced retraction of the clamp is limited It is to provide a locking device that can effectively prevent the deformation and damage of the locking device and thereby significantly improve the durability of the locking device.

In order to achieve the above object, the locking device according to the present invention comprises a housing coupled to the door; And a lock for locking and releasing the door, the lock being coupled to the housing so as to be movable in a direction protruding and immersing with respect to the housing, wherein the door has an interior side surface of the lock that faces the interior and the exterior of the door, respectively. And at least one side surface of the outdoor side surface is formed with at least one concave groove portion or a protrusion portion projecting with respect to the side surface.

In addition, another type of locking device according to the present invention includes a housing coupled to the door; And locks for locking and releasing the doors, the locks being coupled to the housings so as to be movable in a direction protruding and immersing with respect to the housings, and both sides of the locks facing the interior and the exterior of the door, respectively. At least one side of the door is formed to be inclined with respect to the thickness direction of the door, if the inclined side is a side facing the interior of the door, is disposed on the outdoor side of the door and the virtual side parallel to the outdoor side of the door The distance between the plane and the inclined side toward the interior of the door decreases toward the direction away from the door, and if the inclined side is the side toward the outdoor of the door, the distance between the virtual plane and the exterior of the door The distance between the inclined sides increases in the direction away from the door. .

According to the present invention, when the physical hacking through the gap between the door and the door holder, the engaging portion projecting on the inner side of the clamp insertion hole is caught in the groove portion or the protrusion or the inclined portion formed on the side of the clamp so that the forced retraction of the clamp is limited. Will receive. Therefore, to provide a locking device that can effectively block the deformation of the clamp and thereby the damage of the locking device and significantly improve the durability of the locking device.

1 is a schematic front view of a door lock device according to a conventional example as viewed from an indoor side.
FIG. 2 is a schematic cross-sectional view of the II-II line of FIG. 1.
FIG. 3 is a schematic cross-sectional view of the II-II line of FIG. 1 schematically showing the shape of the clamp in the attempt of physical hacking.
4 is a schematic front view of the locking device according to the first embodiment of the present invention as viewed from the indoor side.
5 is a schematic cross-sectional view taken along the line VV of FIG. 4.
FIG. 6 is a schematic cross-sectional view of the V-V line of FIG. 4 and schematically shows the shape of the clamp when attempting physical hacking.
7 is a cross-sectional view of main parts of the locking device according to the second embodiment of the present invention.
8 and 9 are schematic sectional views of principal parts of a locking device according to a third embodiment of the present invention.
10 is a schematic cross-sectional view of principal parts of a locking device according to a fourth embodiment of the present invention.
11 is a schematic cross-sectional view of principal parts of a locking device according to a fifth embodiment of the present invention.
12 is a schematic cross-sectional view of principal parts of a locking device according to a sixth embodiment of the present invention.
13 is a schematic cross-sectional view of main parts of a locking device according to a seventh embodiment of the present invention.
14 is a schematic cross-sectional view of principal parts of a locking device according to an eighth embodiment of the present invention.
15 is a schematic cross-sectional view taken along the line XV-XV of FIG. 14.

4 is a schematic front view of the locking device according to the first embodiment of the present invention as viewed from the inside, FIG. 5 is a schematic cross-sectional view of the V-V line of FIG. 4, and FIG. 6 is a schematic of the V-V line of FIG. 4. A cross sectional view schematically showing the shape of a clamp in a physical hacking attempt.

4 to 6, the locking device 100 of the present embodiment, that is, the door lock device may be applied to a mechanical door lock device or a digital door lock device driven by a power source such as a motor or a solenoid.

The locking device 100 of the present embodiment includes a housing 10, a clamp 20, a cap member 30, and a power transmission means (not shown).

The housing 10 is coupled to the door 1. An installation space (not shown) is formed in the housing 10 to allow various components to be installed. A motor or solenoid (not shown) is installed in the installation space of the housing 10. The motor or solenoid is operated by a power source and generates rotational or linear driving force, respectively. In addition, a button 11 for operating a motor or a solenoid is coupled to the housing 10. In addition, the housing 10 is provided with a manual operation knob 12, so that the locking clasp moves linearly when the knob 12 is rotated.

The catch 20 is for locking and unlocking the door 1. The catch 20 is installed in the housing 10 so as to be linearly movable. The catch 20 moves linearly in the horizontal direction. That is, the clamp 20 moves in a direction projecting or immersed with respect to the housing 10. A pair of grooves 211 and 221 are formed in the clasp 20 in parallel with each other. The clamp 20 is formed long in the linear movement direction of the clamp 20.

The pair of grooves 211 and 221 are recessed in the indoor side 21 and the outdoor side 22 of the clamp, respectively. Here, the indoor side 21 is toward the interior side of the door 1, the outdoor side 22 refers to the side toward the outdoor side of the door 1, the indoor side and the outdoor side are opposite to each other in the thickness direction of the door Facing direction. The indoor side 21 and the outdoor side 22 are parallel to each other and orthogonal to the thickness direction of the door, respectively. Each of the grooves 211 and 221 is elongated in the direction orthogonal to the longitudinal direction of the clamp 20. The cross sections of the grooves 211 and 221 may be formed in a sawtooth shape unlike the shape shown in FIG. 4, and the shape of the grooves 211 and 221 is not limited as long as the hooking portion to be described later can be caught well during physical hacking. In addition, each of the grooves 211 and 221 is formed long in the up and down direction on the indoor side 21 and the outdoor side 22 extends to the upper side and the lower side of the clasp 20.

Cap member 30 is coupled to the jamb (2). The cap member 30 is formed by an injection, compression or bending process. The cap member 30 is formed with a clamp insertion hole 31 into which the clamp 20 is inserted. Clamp insertion hole 31 is open to one side, the clasp 20 is able to enter and exit the clasp insertion hole (31). The cap member 30 is closed in the thickness direction of the door 1. Here, the meaning of being blocked means that the clamp 20 is blocked by the cap member 30 even if the clamp 20 moves in the thickness direction of the door 1 in the state where the clamp 20 is inserted into the clamp insertion hole 31. Deviation from is meant. As a result, the catch 20 is allowed to enter only one side of the clamp insertion hole 31.

In addition, the cap member 30 is provided with a pair of engaging portions 32. The pair of catching portions 32 are formed to face each other at the inlet of the clamping hole 31. The pair of locking portions 32 are normally spaced apart from the linear movement path of the clamp 20 when there is no physical hacking, and in a state where the clamp 20 is inserted into the clamp insertion hole 31, The catch 20 is disposed between the engaging portions 32 of the. The pair of locking portions 32 respectively correspond to the groove portions 211 and 221 of the clamp and are formed to protrude in the thickness direction of the door.

The power transmission means transmits the rotational driving force of the motor or the linear driving force of the solenoid to the clamp so as to drive the clamp straight. The power transmission means is configured to include a gear or a link or a rotating member, and the power transmission means are already known in various forms, such as Korean Utility Model No. 278038 and Korean Patent No. 813122, so a detailed description thereof will be omitted. Shall be.

In the locking device 100 configured as described above, after inserting a hacking tool such as parru through the gap 3 between the door 1 and the door holder 2 while the door 1 is locked, When the 20 is flipped, the catch 20 moves toward the door. And, as shown in Figure 6, the groove portion 211 formed in the clasp is caught by one of the pair of engaging portions 32 formed in the cap member. When the locking portion 32 of the support member is caught by any one of the groove portions 211 and 221 of the clasp as described above, the clasp 20 moves linearly in a retracting direction, that is, a direction immersed with respect to the case 10. You resist. In this way, when the clamp 20 resists, the door 1 is forcibly unlocked and not opened (the lock 20 is not detached from the clamp insertion hole 31), thereby physically hacking the lock 100. Security is greatly improved. In addition, deformation of the clamp and consequent breakage of the locking device are effectively blocked, and durability of the locking device is greatly improved.

In particular, since the grooves 211 and 221 and the locking portion 32 are formed in pairs, the locking portion 20 and the locking portion 32 can be formed regardless of the direction in which the clamp 20 is folded down. That is, when the catch 20 is flipped away from the door 1, the groove 211 formed in the indoor side is caught by the catching part 32, and the catch 20 is flipped in the direction approaching the door 1. The groove 221 formed on the outdoor side of the ground is caught by the locking portion 32. Therefore, the security of the locking device is greatly improved.

Meanwhile, in the first embodiment, the cap member is configured to have a pair of engaging portions formed in one body, but as shown in FIG. 7, the first cap element 35 and the first cap element 35a are coupled to each other. It may be configured to include a two cap element (36). Here, the engaging portion 32 is formed in the first cap element 35 and the second cap element 36, respectively. The first cap element 35 is formed to be almost similar in appearance to the cap member 30 of the previous embodiment and includes a clamping hole 31. However, unlike the cap member 30 of the first embodiment, the first cap element 35 is provided with only one locking portion. In addition, the second cap element 36 may be coupled to the first cap element 35 in various ways such as a bolted structure, an adhesive structure or a coupling structure by protrusions and grooves, and the first cap element 35 in the present embodiment. The protrusions 361 formed on the second cap element 36 are inserted into the grooves 351 formed in the coupling portion 351. The second cap element 36 is provided with a locking portion 32.

Thus, if the cap member is configured to include the first cap element 35 and the second cap element 36, there is an advantage that the production cost is reduced unlike the previous embodiment. That is, when the cap member 30 is formed to include all of the pair of locking portions 32, the manufacturing process is very complicated and difficult to increase the production cost, but as shown in the present embodiment, the first cap element 35 and If separated after the production by the second cap element 36, the combination is very easy to manufacture.

In addition, in the first embodiment, the grooves are formed on the indoor side and the outdoor side of the clasp, respectively, but one or more grooves may be formed on the indoor side and the outdoor side of the clasp, respectively. Only one or more grooves may be formed. In other words, when the door is opened to the indoor side, the door is forced to move to the indoor side by physical hacking, so a groove may be provided only on the indoor side 21 of the clamp, and when the door is opened to the outdoor side, the door is similarly opened to the outdoor side. The grooves are only provided on the outdoor side of the clamp because it is forced to move.

In addition, in the first embodiment, the groove is formed on the indoor side or the outdoor side of the clasp, but as shown in FIG. 8, a protrusion protruding from the side of the clasp may be formed.

Referring to FIG. 8, in the locking device of the present embodiment, a plurality of protrusions 212 protrude from the interior side surface 21 of the clamp 20b. Each protrusion 212 may be formed in a rod shape, it may be formed long in the vertical direction to be connected to the upper side and the lower side of the clamp. In addition, although not shown in the outdoor side 22 of the clasp, a protrusion having the same shape as the protrusion 212 may be formed to protrude. Of course, the clamping hole formed in the cap member insertion hole and the housing of the cap member is formed in an appropriate size so that the protrusion 212 of the clamping member does not interfere with the linear movement of the clamping member during the normal operation of the clamping member 20b. As described above, the protrusion 212 is formed on the clamp, so that at least one of the protrusions 212 of the clamp is caught by the locking portion 32 of the cap member as illustrated in FIG. 9. Therefore, the security against physical hacking of the locking device is further improved, and the durability of the locking device is further increased. Since a plurality of protrusions 212 are formed, and external force is excessively applied during physical hacking so that the protrusions 212 caught on the catching part 32 are damaged, the other protrusions 212 are caught by the catching part 32 again. It is possible to effectively block the retraction of (20).

In addition, although the grooves or protrusions are formed on the side surfaces of the clamps in the above embodiments, the clamps may be configured without the grooves or protrusions as shown in FIG. 10. 10, only the tip of the clamp is shown for simplicity of the drawing.

Referring to Fig. 10, in the locking device of the present embodiment, no grooves or protrusions are formed on the indoor side and the outdoor side surfaces 21c and 22c of the clamp 20c. However, the indoor side and the outdoor side 21c, 22c of the clasp are not parallel to each other and are formed to be inclined with respect to the thickness direction of the door 1. That is, the indoor side 21c and the outdoor side 22c are inclined with respect to the horizontal direction. In particular, the distance between the interior side and the exterior side 21c, 22c of the clasp gradually increases in the direction away from the door 1.

When the interior side surface 21c and the exterior side surface 22c of the clasp are inclined as described above, any one of the inclined side surfaces 21c and 22c of the clasp is caught by the locking portion 32 of the support member during physical hacking. The retreat of 20c is hindered. In particular, the inclined side surfaces (21c, 22c) is supported most of the load applied during physical hacking, thereby effectively preventing the retraction of the clamp. If the clasp does not retreat as described above, the door cannot be forcibly unlocked, thereby improving the security of the lock. In addition, only one of the indoor side 21c and the outdoor side 22c may be inclined.

On the other hand, the locking device of the first embodiment may be configured such that the elastic member 40 is further provided as shown in FIG. The elastic member 40 may be variously configured such as elastically deformable material, for example, rubber, coil spring, leaf spring, etc., in the present embodiment is composed of rubber. The elastic member 40 is provided in pairs to be inserted into the grooves 211 and 221, respectively. The outer surfaces of the elastic member 40 are preferably arranged on the same plane as the indoor side 21 and the outdoor side 22 of the clamp, respectively, but slightly protrude from the indoor side 21 and the outdoor side 22. It may be arranged. The elastic member 40 may be formed to correspond to the sizes of the grooves 211 and 221 so that the size thereof may be formed to completely fill the grooves, and may be formed to fill only a part of the grooves 211 and 221 as shown in the drawing. . On the other hand, the housing 10 is formed with a doorway 13 through which the stopper 20 enters and exits. Specifically, the doorway 13 is formed through the side surface 101 of the housing. The side surfaces 101 of the housing have a plate shape, and the thicknesses of the housing side surfaces near the entrance 12 are all the same.

When the elastic member 40 is coupled to the grooves 211 and 221 as described above, even when the level of the clamp 20 is slightly shaken during the normal straight movement of the clamp 20, the door 13 of the housing is located near the door 20. It is not inserted into the grooves 211 and 221 of the so as not to be caught. Of course, the locking portion 32 of the cap member is also not caught by the grooves 211 and 221 of the clamp when there is no physical hacking attempt. Therefore, the operation of the clamp 20 can be made more smoothly. And, even if the thickness of the side surface 101 of the housing is smaller than the width of the grooves 211 and 221, the clamp 20 is linearly moved to immerse or protrude relative to the housing 10 through the doorway 13 formed in the housing side 101. In the process, the side surfaces 101 of the housing are not inserted into the groove portions 211 and 221 of the clamp. This is because the elastic member 40 resists the insertion of the side surface 101 of the housing. On the other hand, in the case where there is a physical hacking attempt as described in the first embodiment, the catch 20 is moved by the physical hacking force in the direction to be caught by the locking portion 32 of the cap member as shown in FIG. . In this process, since the elastic member 40 is pressed by the locking portion 32, the outer surface of the elastic member 40 is immersed with respect to the interior side surface 21 of the clamp. Accordingly, as described in the first embodiment, when the physical hacking attempt is attempted, the locking portion 32 of the cap member is caught by the inner surfaces of the grooves 211 and 221.

On the other hand, in the locking device of the fifth embodiment shown in FIG. 11, as shown in FIG. 12, the elastic member is not provided and the side thickness t2 of the housing is larger than the width t1 of the groove portion. You can configure the device. As such, when the thickness t2 of the side surface 101 of the housing is greater than the width t1 of the groove portions 211 and 221, the side surface of the housing can be prevented from being inserted into the groove portion of the clasp during the operation of the clasp. Therefore, the operation of the clamp is made more smoothly.

Further, in the above embodiments, the grooves are formed only on the indoor side and the outdoor side of the clasp, but as shown in FIG. 13, the grooves 231 and 241 are extended to the upper side 23 and the lower side 24 of the clasp 20f. May be configured to be formed. As described above, the grooves 231 and 241 are formed, and locking portions (not shown) corresponding to the grooves 231 and 241 of the upper side 23 and the lower side 24 are also formed in the cap member. Therefore, even if the locking clasp 20f attempts to physically hack in any of the indoor side, the outdoor side, the upper side, and the lower side, the locking between the groove and the engaging portion is made, thereby preventing physical hacking. For reference, FIG. 13 shows only the clamp for the sake of simplicity.

Finally, in the above embodiments, the clamp is configured to move linearly, which is configured to be guided by guide pins and holes as shown in FIGS. 14 and 15.

Referring to FIGS. 14 and 15, the housing 10e includes a case 15 and a cover 16 which are coupled to each other and form an installation space in which a clamp is installed. The case 15 has a rod-shaped protrusion 151 formed therein, and the protrusion 151 has an inner side surface 21 of the clamp.

The long hole 25 is formed long in the linear movement direction of the clasp to the clasp 20e. The guide pin 50 is inserted into the long hole 25, and one end of the guide pin 50 is screwed to the protrusion 151. That is, male threads (not shown) are formed at one end of the guide pin 50, and female threads (not shown) are formed at the protrusion 151. In addition, the other end of the guide pin 50 is disposed to contact the inner surface of the cover 16. The annular portion 51 protrudes from the outer circumferential surface of the guide pin 50, and the annular portion 51 is in contact with and supported by the stepped portion 251 of the long hole 25 of the clasp 20e. Therefore, the clamp 20e is not separated from the guide pin 50.

As described above, the clamp 20e is guided by the linear movement of the guide pin 50 and the long hole 25. In particular, when attempting physical hacking, the distal end of the clamp 20e is pressed toward the indoor side or the exterior side, and even in this case, the clamp 20e is supported between the protruding portion 151 of the case and the annular portion 51 of the guide pin. Since the other end of the guide pin 50 is supported by the case 16, the guide pin 50 does not move in the thickness direction of the door unless the case 15 or the cover 16 is damaged. If the guide pin is shorter than the present embodiment, and a space is formed between the other end of the guide pin and the cover, when the physical hacking is applied, an external force is applied to the clamp so that the guide pin moves in the direction of contact with the case. Is accelerated. Thus, in this embodiment, since the guide pin 50 is configured to be in contact with the cover 16, there is an effect that the security of the clamp 20e is more improved.

As mentioned above, the present invention has been described in detail with reference to preferred embodiments, but the present invention is not limited to the above embodiments, and various modifications may be made by those skilled in the art within the technical idea of the present invention. It is obvious.

For example, in the present embodiments, all of the locking device is configured as a door lock device, but the locking device may be applied in various forms such as a lock of a safe, a lock of a car door, or a lock for controlling access to a specific space. have.

1 ... door 2 ...
3 ... crack 10,10e ... housing
13 ... Entrance 15 ... Case
16.Cover 20, 20b, 20c, 20f ... Lock
21, 21c ... Indoor side 22, 22c ... Outdoor side
23 Top side 24 Bottom side
25.Long 30,30a ... Cap member
31 Locking hole 32
35 ... first cap element 36 ... second cap element
40.Elastic member 50.Guide pin
51.Fantasy 100 ... Lock
101 ... housing side 151,212 ... protrusions
211,221,231,241

Claims

A housing coupled to the door; And
A lock for locking and unlocking the door, the lock being coupled to the housing to be movable in a direction protruding and immersing with respect to the housing;
And at least one side of the interior side and the exterior side of the clasp facing the interior and the exterior of the door, at least one groove portion concave with respect to the side surface or at least one protrusion portion protruding with the side surface.

The method of claim 1,
The locking device is characterized in that the groove is formed long in the vertical direction.

The method of claim 1,
The groove portion is formed on the indoor side and the outdoor side of the clamp, respectively.
Locking device characterized in that the upper side and the lower side of each of the clasps facing upward and downward, respectively, the recessed portion is formed with respect to the upper side and the lower side.

The method of claim 1,
The locking device has a plurality of protrusions are formed, the protrusion is characterized in that the rod is made of a rod shape.

The method of claim 1,
The catch is formed with the groove portion,
The groove portion is provided with an elastic member is inserted into the groove portion and made of an elastically deformable material,
The outer side surface of the elastic member is disposed on the same plane as the side of the clamp having the groove portion or the locking device, characterized in that arranged to protrude with respect to the side of the clamp having the groove portion formed.

The method of claim 1,
The catch is formed with the groove portion,
The housing is formed with an entrance through which the stopper enters,
And the width of the groove is narrower than the thickness of the housing wall near the doorway.

A housing coupled to the door; And
A lock for locking and unlocking the door, the lock being coupled to the housing to be movable in a direction protruding and immersing with respect to the housing;
At least one side of both sides of the clasp toward the indoor and outdoor of the door, respectively, is inclined with respect to the thickness direction of the door,
If the inclined side is a side facing the interior of the door, the distance between the imaginary plane disposed on the outdoor side of the door and parallel to the outdoor side of the door and the inclined side toward the interior of the door is from the door. Decrease in the direction away
And when the inclined side is a side facing the outdoor of the door, a distance between the virtual plane and the inclined side facing the outdoor of the door increases in a direction away from the door.

The method of claim 4, wherein
Both sides of the clasp toward both the indoor and outdoor sides are formed to be inclined,
And the distance between both sides of the catch increases in a direction away from the door.

The method according to any one of claims 1 to 8,
The housing includes a case and a cover coupled to each other to form an installation space in which the clamp is installed,
The clasp is formed with a long hole in one direction,
The long hole is provided with a guide pin fixed to the case and cover,
At least one end of both ends of the guide pin is disposed to contact the case or cover,
The indoor side or the outdoor side of the clasp is disposed so as to contact with the case or cover.