KR20140086422A

KR20140086422A - Locking device for door

Info

Publication number: KR20140086422A
Application number: KR1020120156883A
Authority: KR
Inventors: 박정호; 신상민; 이상희
Original assignee: 노틸러스효성 주식회사
Priority date: 2012-12-28
Filing date: 2012-12-28
Publication date: 2014-07-08

Abstract

The present invention relates to a locking device for a door, comprising: a safety plate provided on an inner surface of a door so as to be broken when an external force is applied thereto; An auxiliary locking unit for restricting the door to a target object when the safety plate is broken by a forced impact; A guide bracket including a rotation deforming portion rotatably deformed by an external forced impact, the guide bracket being slidably provided on an inner surface of the door; And a locking member fixed to the rotational deforming portion and slidably moving together with the guide bracket and selectively restricting the door to the object; A sliding member which slides on an inner surface of the door; A door lock unit provided on an inner surface of the door and interlocked by sliding movement of the sliding member and selectively restricting the door to the object; And a locking assembly provided on an inner surface of the door and selectively restraining sliding movement of the sliding member, wherein the guide bracket is fixed to the sliding member, and when the locking member is forcibly subjected to the impact, Wherein the door is locked to the object by the auxiliary locking part when the deformable part rotates on the guide bracket and presses the safety plate, The sliding member is formed by cutting a part of the plate surface to form a cutout groove. The cutout portion is bent while the cutout groove is formed. The cutout portion is bent so as to interfere with the locking member pushed by a forced impact to stop the movement of the locking member And a locking device for locking the door.

Description

LOCKING DEVICE FOR DOOR

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a locking device for a door, and more particularly, to a locking device for a door that can safely protect an object requiring protection such as a safe and a financial automation device.

In general, a safe is used for storing cash, securities, jewelery, valuable documents, etc., and is widely used for preventing a third party from intruding in addition to a formal user.

However, as the technology related to the safe evolves, the technology for unlawfully opening the safe is continuously improved, so that a safe which is more secure and less likely to be stolen is required. Especially, since the automated teller machine which holds a large amount of cash such as cash dispenser is used in public places, the necessity of security for the safe is emphasized.

The primary purpose of a safe is to prevent a third party from opening the safe no matter what device and method is used. The secondary purpose is to allow the police or private security agency to take the appropriate action It would be to delay opening until it can. At this point, it is almost impossible to open the safe at all when cutting tools and welding devices are developed. It is the most practical way to delay the opening time of the safe as much as possible.

For reference, under the US Underwriters Laboratory (UL) certification, it is stipulated that a safety expert should not be able to open the safe for about 30 minutes in order to be in safety level 1. In other words, it is a top priority to safeguard the safe for the maximum amount of time for devices that are difficult to transport the entire machine, such as cash dispensers.

The present invention provides a locking device for a door that can safely protect an object requiring protection such as a safe and a financial automation device.

Particularly, the present invention provides a door locking device capable of stably maintaining a locked state of a door even when a forced attack is applied to the side of the door.

According to a preferred embodiment of the present invention, a safety plate is provided on an inner surface of a door so that it can be broken when an external force is applied to the door. An auxiliary locking unit for restricting the door to a target object when the safety plate is broken by a forced impact; A guide bracket including a rotation deforming portion rotatably deformed by an external forced impact, the guide bracket being slidably provided on an inner surface of the door; And a locking member fixed to the rotational deforming portion and slidably moving together with the guide bracket and selectively restricting the door to the object; A sliding member which slides on an inner surface of the door; A door lock unit provided on an inner surface of the door and interlocked by sliding movement of the sliding member and selectively restricting the door to the object; And a locking assembly provided on an inner surface of the door and selectively restraining sliding movement of the sliding member, wherein the guide bracket is fixed to the sliding member, and when the locking member is forcibly subjected to the impact, Wherein the door is locked to the object by the auxiliary locking part when the deformable part rotates on the guide bracket and presses the safety plate, The sliding member is formed by cutting a part of the plate surface to form a cutout groove. The cutout portion is bent while the cutout groove is formed. The cutout portion is bent so as to interfere with the locking member pushed by a forced impact to stop the movement of the locking member And a locking device for locking the door.

At this time, the bending piece is also characterized by being bent obliquely toward the upper surface or the lower surface of the sliding member.

Further, the bending piece is also characterized by being formed with wrinkles so as to be foldable in the longitudinal direction.

According to the lock device for a door according to the present invention, it is possible to safely protect an object requiring protection such as a safe and a financial automation device.

Particularly, according to the present invention, even if a forcible attack is applied to the side of the door, the locking state of the door can be stably maintained. That is, according to the present invention, when a forcible impact is applied to the locking member, the rotary deformation is rotationally deformed, the safety plate can be broken by pressing the safety plate, and the auxiliary locking unit can be operated as the safety plate is broken, It is possible to more stably maintain the locked state.

Further, according to the present invention, the restraint state of the sliding member can be maintained by the auxiliary locking unit before the locking member is broken by the forced impact from the outside, and the time for opening the safe by the intruder can be minimized .

In addition, according to the present invention, when an impact is applied to the locking member, the rotary deformation portion is rotationally deformed and a part of the impact can be canceled, so that the impact transmitted to the locking assembly through the sliding member can be mitigated, Can be delayed.

1 is a perspective view illustrating a structure of a safe having a door locking device according to the present invention.
2 and 3 are views for explaining the structure of a locking device for a door according to the present invention.
FIG. 4 is a view for explaining an intruder intrusion mode for forcibly opening a safe to which a door locking device according to the present invention is applied.
5 is a partial view showing another modification of the door locking device according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments. For reference, the same numbers in this description refer to substantially the same elements and can be described with reference to the contents described in the other drawings under the above-mentioned rules, and the contents which are judged to be obvious to the person skilled in the art or repeated can be omitted.

In addition, since the present invention is a further improvement of the patent application No. 2012-0035348 filed by the applicant of the present invention as described in the prior art, the description of FIGS. 1 through 4 in the following description is intended to quote the contents of the prior application , And the structure improved from Fig. 5 will be described below.

FIG. 1 is a perspective view showing a structure of a safe with a door locking device according to the present invention, FIGS. 2 and 3 are views for explaining the structure of a door locking device according to the present invention, FIG. 3 is a view for explaining an intruder's intrusion mode for forcibly opening a safe to which a door locking device according to the present invention is applied.

As shown in these figures, the door locking device according to the present invention is provided for selectively locking the door 110 that opens and closes the storage space of the object, and includes a safety plate 270, an auxiliary locking portion 260, A guide bracket 280 and a locking member 250.

For reference, the object is a storage device for storing cash, securities, jewelery, valuable documents, etc., and may include general safes and financial automation devices.

In addition, the term "financial automation equipment" refers to an automation device capable of providing basic financial services such as deposits or withdrawals without regard to time and place in connection with financial services, such as cash withdrawal machines and cash dispensers, without bank employees. Hereinafter, an example in which the door locking device according to the present invention is applied to the safe 100 will be described.

The safe 100 has a storage space with a front surface opened. A front opening of the storage space is configured to be opened and closed by a door 110 hinged to the safe 100, and the door 110 is closed The state is configured to be selectively constrained by the door locking device.

The inner surface of the door 110 is selectively provided with a locking means for restricting the door 110 to the safe 100. The structure and characteristics of the locking means can be variously changed according to required conditions and design specifications .

In the present invention, the locking means is provided so as to be directly (or interlocked) with the restricting element or the restricting element for restricting the door 110 and the safe 100, and indirectly connecting the door 110 to the object It can be understood as a concept including all interlocking elements that are constrained. In one example, the locking means may comprise a sliding member 220, a door locking portion 230 and a locking assembly 240.

The sliding member 220 may be provided parallel to the inner surface of the door 110, and may be selectively slidably provided.

The base plate 112 may be integrally fixed to the inner surface of the door 110 and the sliding member 220 may be provided to slide on the base plate 112.

A guide slot 222 may be formed in the sliding member 220. An interlocking protrusion 232a to be described later can move along the guide slot 222 when the sliding member 220 is slid. The linear link member 232 can move linearly. For example, the guide slot 222 may be formed in a linear section inclined with respect to the sliding direction of the sliding member 220. When the sliding member 220 is slid, the interlocking protrusion 232a may be inserted into the guide slot 222 The linear link member 232 can move linearly along the vertical direction. In some cases, the guide slot may be formed in a curved section, and the present invention is not limited or limited by the shape and angle of the guide slot.

Further, the door handle 210 may be coupled to the outer surface of the door 110 so as to be rotatable, and the sliding member 220 may be interlocked and slidably moved by a rotation operation of the door handle.

The interlocking structure between the door handle 210 and the sliding member 220 can be variously changed according to required conditions and design specifications. For example, the inner surface of the door 110 may be provided with a rotation piece 214 integrally rotatable with the shaft of the door handle 210, and a guide slot 214a may be formed in the rotation piece 214 have. The sliding member 220 may be formed with a guide protrusion 220a movably received along the guide slot 214a. Accordingly, as the rotary piece 214 rotates by the rotation operation of the door handle 210, the sliding member 220 is interlocked and slidable by the guide protrusion 220a moving along the guide slot 214a.

In the embodiment of the present invention, the door handle 210 is rotatably provided. However, in some cases, the door handle may be slidably provided, 220 may be interlocked and slide.

The sliding member 220 may be provided at the side of the sliding member 220 with a restricting groove 221. When the locking member 244 is locked to the restricting groove 221 in the restricting position, Can be restrained.

The restricting groove 221 may be provided in various forms according to required conditions and design specifications. For example, the restricting groove 221 may be formed through the sliding member 220 along the inner direction of the door 110. That is, the restricting groove 221 may be formed in an open groove or jaw shape that can be restrained in the locking journal 244. Hereinafter, an explanation will be given of an example in which the restricting groove 221 is formed at the end of the side end of the sliding member 220. For reference, the inner direction of the door 110 in the present invention can be understood as a direction perpendicular to the plate surface of the door 110 (or a direction passing through the door 110).

The restricting groove 221 may include a restricting wall 221a contacting the locking journal 244 and the restricting wall 221a may be formed by bending a part of the side end of the sliding member 220, As shown in Fig.

As described above, since the restricting groove 221 can be provided in the form of an open groove or a jaw, interference can be minimized when the locking journal 244, which will be described later, enters the restricting groove 221. In other words, when the restricting groove 221 is provided in the form of an open groove or a jaw, the upper and lower portions are opened unlike the restricting groove having a closed-hole shape, so that interference due to the vicinity of the restricting groove can be minimized have.

In the above-described embodiment of the present invention, the constraint groove is formed as an open groove or a jaw shape capable of restricting the sliding movement of the sliding member 220 with respect to the locking journal, but in some cases It is also possible to form the restraint groove itself in the form of a hole or a cave which can house the end portion of the locking journal.

The door locking unit 230 is provided on the inner surface of the door 110 and is interlocked by the sliding movement of the sliding member 220 and is selectively provided for restricting the door 110 to the safe 100.

The door locking unit 230 includes a linear link member 232 having an associated protrusion 232a that moves along the guide slot 222 and is linearly moved by sliding movement of the sliding member 220, And a locking pin 234 integrally connected to the member 232 and linearly moving together with the linear link member 232 and selectively restricting the door 110 to the safe 100, (Not shown) for receiving the free end of the protruded lock king pin 234, respectively.

An example in which the linear link members 232 are provided on the upper and lower portions of the sliding member 220 and the linear link members 232 are linked by the sliding movement of the sliding member 220 and linearly moved along the vertical direction Will be described.

In some cases, a plurality of guide slots may be formed on the sliding member, and a plurality of linear link members may be linearly moved along the guide slots. The present invention may be limited by the number and arrangement of the linear link members But is not limited thereto.

The locking assembly 240 is provided on the inner surface of the door 110 and is optionally provided to restrain sliding movement of the sliding member 220. The locking assembly 240 includes a locking body 242 fixed to the base plate 112 and a locking position releasing from the locking position constrained by the locking groove 221 and the locking groove 221. [ And a locking journal 244 that linearly moves with respect to the base 242. That is, the locking journal 244 is linearly movable along the direction perpendicular to the sliding direction of the sliding member 220 in front of the sliding member 220, and the locking journal 244 is disposed in the unlocked position The restricting groove 221 of the sliding member 220 is constrained to the locking journal 244 in a state in which the locking journal 244 is disposed at the restricting position, The sliding movement of the sliding member 220 can be restrained. Further, in the state in which the locking journal 244 is disposed at the restricting position, sliding movement of the sliding member 220 in the releasing direction can be restrained. Here, sliding movement of the sliding member 220 in the releasing direction is restricted, which can be understood as a state in which the locking state of the door 110 by the door locking portion 230 described above is maintained.

Further, the inner surface of the door 110 may be provided with a reinforcing cover member 246 to cover the locking body 242. For example, the reinforcing cover member 246 may be fixed to the base plate 112.

In the embodiment of the present invention, the locking journal is configured to move linearly with respect to the locking body. However, in some cases, the locking journal may be configured to move from the unlocked position to the locked position in other ways have.

The locking journals 244 may have various cross-sectional shapes according to the required conditions and design specifications. In one example, the locking journals 244 may be provided with a rectangular cross-sectional shape. In some cases, the locking journals may have a circular or non-circular shape, and the present invention is not limited or limited by the cross-sectional shape of the locking journals.

In addition, the locking body 242 is mechanically or electrically connected to a locking module (not shown) provided on the outer surface of the door 110 so that the locking journal 244 can be selectively protruded by the operation of the locking module do. As the lock module, a normal key lock module, a dial lock module, or a key-pad lock module, which is commonly used in a safe or the like, can be used so that only a specific authorized user can use it .

A cover member (not shown) may be provided on the inner surface of the door 110 so as to cover the locking journals 244 and a through hole (not shown) through which the locking journals 244 are passed The flow of the locking journal 244 along the inner direction of the door 110 can be restricted by the penetrating portion.

The flow of the locking journal 244 along the inner direction of the door 110 means that the locking assembly 240 is lifted from the door 110 due to a forced impact applied from the outside of the door 110 Flow or separate flow.

The safety plate 270 is provided on the inner surface of the door 110 so that it can be broken when a forcible impact from the outside is sensed. For example, the safety plate 270 may be provided between the inner surface of the door 110 and the base plate 112, and may be configured to be broken when an impact force is applied from the outside. Hereinafter, an example in which the safety plate 270 is formed of a glass material capable of being broken by a certain impact will be described. In some cases, the safety plate may be formed of other materials that can be destroyed by a certain amount of impact, and the present invention is not limited or limited by the material and characteristics of the safety plate 270.

The auxiliary locking portion 260 is configured to restrain the door 110 to the safe 100 when the safety plate 270 is broken due to a forced impact of a predetermined amount or more from the outside. For example, the auxiliary locking unit 260 may be configured to hold the door 110 in a locked state by restricting sliding movement of the sliding member 220 when a forced impact of a predetermined level or more is sensed from the outside.

A locking rod 262 provided on the inner surface of the door 110 so as to be linearly movable to a restricting position for restricting the sliding movement of the sliding member 220 and an unlocking position for allowing the auxiliary locking unit 260 to slide, Includes a connecting member 264 connected to the safety plate 270 and the other end connected to the locking rod 262 and a locking spring 266 for providing an elastic force to move the locking rod 262 to the locked position As shown in FIG. A restricting hole 226 may be formed at the side of the sliding member 220. When the locking rod 262 is disposed at the restricting position, the locking rod 262 may be constrained to the restricting hole 226 .

The locking rod 262 is provided so as to be linearly movable to a restricting position and an allowable releasing position for restricting the sliding movement of the sliding member 220 on the base plate 112. The locking rod 262 Is supported by the connecting member 264 and can be maintained in the deployed state and when the safety plate 270 is broken due to a forced external impact, the locking rod 262 is restrained by the elastic force of the locking spring 266 Location.

For example, the locking rod 262 may be spaced apart from the locking rod 262, and each locking rod 262 may be connected to the safety plate 270 by a connecting member 264. The locking spring 266 provides an elastic force to move the locking rods 262 to the restraining position, but before the safety plate 270 is broken, each locking rod 262 is released by the connecting member 264 to the releasing position The deployed state can be maintained. However, when the safety plate 270 is broken, the locking state of each locking rod 262 is released, and at the same time, by the elastic force of the locking spring 266, The sliding movement of the sliding member 220 can be restrained.

The guide bracket 280 is provided to be slidable on the inner surface of the door 110 and includes a rotation deforming portion 282 that is rotationally deformed when a forced impact is applied from the outside. For example, the guide bracket 280 may be directly connected to the end of the sliding member 220 to slide together as the sliding member 220 slides. In some cases, the rotational deforming portion may be connected to another component or portion instead of the sliding member so as to slide.

For reference, in the present invention, the rotationally deformable portion 282 is rotationally deformed as a forced impact from the outside is applied. This means that when the rotationally deformable portion 282 is deformed partly (E. G., Torn or torn) and rotated.

A locking member 250 to be described later can be fixed to the rotation deforming unit 282. When a forcible impact from the outside is applied to the locking member 250, the rotation deforming unit 282 rotates on the guide bracket 280, . One end of the rotation deforming portion 282 may be pressed against the safety plate 270 during the rotation deformation of the rotation deforming portion 282 so that the safety plate 270 is broken and the auxiliary locking portion 260 The restricting state of the sliding member 220 can be maintained by the auxiliary locking portion 260. [

The locking member 250 is fixed to the rotation deforming portion 282 and slides along with the guide bracket 280 and is selectively provided for restricting the door 110 to the safe 100. For example, the locking member 250 may be provided in the form of a pin or a cylinder, and a plurality of the locking members 250 may be provided on the side surface of the door 110 at a predetermined interval.

The locking member 250 can be selectively protruded to the side of the door 110 as the guide bracket 280 slides and the locking member 250 protrudes from the side surface of the door 110, A groove (not shown) may be formed.

The rotationally deformable portion 282 may be provided in various ways depending on the required conditions and design specifications. For example, the rotation deforming portion 282 may be formed by partially machining a portion of the guide bracket 280. In some cases, it is also possible to separately fabricate the rotation-deformed portion and then mount it on the guide bracket.

The fixing member 282a is rotatably deformable on the guide bracket 280 and is fixed to the locking member 250. The fixing member 282a is integrally bent at the end of the fixing member 282a, Quot; L "shape including a pressing piece 282b disposed adjacent to the safety plate 270 will be described as an example. The pressing piece 282b can press the safety plate 270 as the fixing piece 282a rotates on the guide bracket 280 when the impact is applied to the fixing piece 282a, Can be destroyed.

The guide bracket 280 may be formed with a deformation inducing slit 283 for guiding rotational deformation of the fixing piece 282a adjacent to the fixing piece 282a. A guide slit 284 for ensuring rotation of the piece 282b may be formed adjacent to the periphery of the pressing piece 282b. By forming the deformation inducing slit 283 and the guide slit 284 in such a manner that a part of the guide bracket 280 is substantially cut, the rotational deformation portion 282 is formed using a part of the guide bracket 280 .

The deformation inducing slit 283 may be formed in various shapes to induce rotational deformation of the fixing piece 282a according to required conditions and design specifications. For example, the deformation inducing slit 283 may be formed adjacent to the right and left sides of the fixing piece 282a in a substantially linear section shape. In some cases, the deformation inducing slit may be formed in a form including a bent section.

As described above, the locking member 250 may be formed in a pin shape so that a plurality of the locking members 250 may be provided on the side surface of the door 110 at a predetermined interval, The impact force generated when an impact is applied to any one of the plurality of locking members 250 may be such that the rotational deformation portion 282 corresponding to the locking member to which the impact force is applied is deformed by the deformation inducing slit 283 And the other locking member of the plurality of locking members 250 can maintain a state (state in which the door 110 is not affected by the impact force) that restrains the door 110 to the object have.

One end of the pressing piece 282b may protrude from the opposite surface of the guide bracket 280 facing the safety plate 270. For example, the pressing piece 282b may be arranged at an angle to be inclined so that one end thereof may be disposed adjacent to the safety plate 270 relatively. In some cases, one end of the pressing piece may have a relatively thick thickness so as to be disposed adjacent to the safety plate.

The end of the sliding member 220 may be received in the guide bracket 280 adjacent to the end of the locking member 250 and the end of the sliding member 220 may receive the rotation deforming portion 282 A rotation allowing portion 220a for allowing rotation can be formed. The rotation allowing portion 220a can secure a predetermined space between the end portion of the locking member 250 and the end portion of the sliding member 220 so that when the locking member 250 is impacted, ) Can be ensured.

In addition, the guide bracket 280 may be provided with a reinforcing member 286 for preventing the locking member 250 from being excessively pushed when an impact is applied to the locking member 250. The reinforcing member 286 may be received in the guide bracket 280 so as to be spaced apart from the end of the locking member 250. When the locking member 250 is pushed rearward by a certain amount by an impact, 250, respectively.

Meanwhile, the door 100 may be provided with a side protection part 114 for protecting the side surface of the locking assembly 240. That is, the side protection part 114 may be provided to protect the locking assembly 240 when an attack is applied from the side surface of the door 110.

The side protection portion 114 may be provided in various structures according to required conditions and design specifications. For example, the side protection portion 114 may be disposed at an angle with respect to a side surface of the locking assembly 240. Of course, it is also possible to configure the side protection portion to be substantially parallel to the side of the locking assembly, but when the side protection portion 114 is disposed obliquely to the side of the locking assembly 240, The drill or the chin can be deflected along the inclination of the side protective portion 114, thereby delaying the penetration time.

The angle of arrangement of the side protective portions 114 can be appropriately changed in accordance with required conditions and design specifications. Hereinafter, an example in which the side surface protection portion 114 is disposed at an angle of about 45 degrees will be described.

In addition, the side protection portion 114 may be formed by partially bending the side end portion of the base plate 112 described above. In some cases, it is also possible to construct the side protection portion separately from the base plate and then to be combined.

Meanwhile, as a method for opening the object such as the safe 100 described above, a method of destroying the locking member 250 by side attack of the safe 100 can be expected.

That is, as shown in FIG. 4, a method of drilling a side wall of the side wall of the safe 100 and then directly attacking the locking member 250 using a hammer to break the locking assembly 240 through the sliding member 220 Can be expected. In this way, when the locking assembly 240 is broken, sliding movement of the sliding member 220 can be allowed, so that the locking by the door locking unit 230 can be released by operating the operation handle.

However, in the structure in which the rotation deforming portion 282 is rotatably deformed and the safety plate 270 is broken when an impact is applied to the locking member 250 as in the present invention, even if a forced impact is applied from the outside, 220 can be maintained relatively stable.

That is, when an impact is applied to the locking member 250, the end connecting portion of the fixing piece 282a connected to the guide bracket 280 may be torn and rotated at the same time, so that the pressing piece 282b, By pressing the safety plate 270, the safety plate 270 can be broken. Since the auxiliary locking portion 260 can be operated as the safety plate 270 is broken, the restricting state of the sliding member 220 can be maintained by the auxiliary locking portion 260. Therefore, the intruder must proceed to another dismantling operation to disengage the restraint state by the auxiliary locking portion 260 or to disengage the locking state of the door locking portion 230. Therefore, the time required for opening the safe 100 is delayed so much that the intruder can not open the safe 100 in a short time as intended.

As another method for opening a subject such as the above-described safe 100, a method of destroying the locking assembly 240 through another side attack of the safe 100 can be expected. That is, as shown in FIG. 4, a method of drilling the outer side wall of the safe 100 with a drill, and then destroying the locking assembly 240 using a hammer and a hammer can be expected. In this way, when the locking assembly 240 is broken, sliding movement of the sliding member 220 can be allowed, so that the locking by the door locking unit 230 can be released by operating the operation handle.

However, in the structure in which the side protection portion 114 is provided on the side surface of the locking assembly 240 as in the present invention, when an attack is made by drilling or tableting through the side surface of the door 110, The penetration time can be delayed because it can be deflected along the slope of the slit 114.

Meanwhile, in order to further maximize the effect of delaying the penetration time in addition to the above-described embodiment, the present invention can process the sliding member 220 itself.

That is, as shown in FIG. 5, a part of the plate surface of the sliding member 220 is cut to form a cutting groove (CUT), and a cutting piece (CUT) is formed. The cut piece is bent upward or downward, (BDP) is formed.

When the locking member 250 is pushed by the striking means such as a tablet, a hammer, or the like, when the front end surface portion of the locking member 250 enters the sliding member 220, the bending piece BDP And the front end face of the locking member 250 interfere with each other, the locking member 250 is hooked on the bending piece BDP, making it difficult for the locking member 250 to enter, thereby delaying the opening time of the safe.

The double locking device using the cutout groove (CUT) and the bending piece (BDP) can be doubled in function when used together with the above-described configuration.

At this time, the bending piece BDP is not limited to a structure in which the bending piece BDP is simply cut as shown in the drawing, but the bending piece BDP is not limited to the bending piece BDP, A plurality of fold lines may be formed in the longitudinal direction of the BDP to be folded.

In addition, when the bending piece BDP is bent, it may be formed to have a plurality of bends by forming wrinkles.

In addition, although the illustrated example shows that the bending piece (BDP) is bent downward, it is not limited to this, but it is needless to say that the bending part may be bent upward as described above.

Alternatively, the bending piece BDP may be cut and bent in a direction opposite to the direction shown in the drawing, but may be bent perpendicularly to have a substantially 'inverted' shape so as to be engaged with the locking member 250.

As described above, according to the modified embodiment of the present invention, it is expected that the double safety locking device of the safes can be realized by simply changing the structure of the sliding member 220 in a simple manner.

100: safe 110: door
210: door handle 220: sliding member
230: door lock part 240: locking assembly
250: locking member 260: auxiliary locking portion
270: safety plate 280: guide bracket
282: rotation deformation part 282a:
282b: pressure piece 283: deformation inducing slit
284: guide slit 286: reinforcing member

Claims

A safety plate provided on an inner surface of the door so as to be broken when an external force is applied thereto; An auxiliary locking unit for restricting the door to a target object when the safety plate is broken by a forced impact; A guide bracket including a rotation deforming portion rotatably deformed by an external forced impact, the guide bracket being slidably provided on an inner surface of the door; And a locking member fixed to the rotational deforming portion and slidably moving together with the guide bracket and selectively restricting the door to the object; A sliding member which slides on an inner surface of the door; A door lock unit provided on an inner surface of the door and interlocked by sliding movement of the sliding member and selectively restricting the door to the object; And a locking assembly provided on an inner surface of the door and selectively restraining sliding movement of the sliding member, wherein the guide bracket is fixed to the sliding member, and when the locking member is forcibly subjected to the impact, Wherein the door is locked to the object by the auxiliary locking part when the deformable part rotates on the guide bracket and presses the safety plate,
The sliding member is formed by cutting a part of the plate surface to form a cutout groove. The cutout portion is bent while the cutout groove is formed. The cutout portion is bent so as to interfere with the locking member pushed by a forced impact to stop the movement of the locking member Wherein the door lock mechanism comprises:

The method of claim 1,
Wherein the bending piece is bent obliquely toward an upper surface or a lower surface of the sliding member.

The method of claim 1,
Wherein the bending piece is foldably formed in a longitudinal direction so as to be foldable.