KR20150079185A - A locking structure for door - Google Patents

Abstract

The present invention relates to a door locking structure of a strongbox or ATM. The structure includes a locking device (3) including a locker (8) moving forward or backward; a cam plate (10) having a groove (7) formed to be interlocked with the locker, and rotated by a lever (6) on the front surface of a door when the door is unlocked; and a locking plate (20) including long guide holes (22), guided by being inserted into a plurality of guide pins (23) fixed inside the door to move to locking and unlocking positions by being connected to the cam plate, and formed in an end member (26) of a body in which a door corresponding to a free end part is installed when the door is closed. Therefore, only when the locker of the locking device is not interlocked, the locking plate is able to be unlocked as the cam plate is rotated by a handle of the door. As the locking plate is not able to be operated from the outside, the safety of a strongbox or ATM is improved. The structure uses less components and smoothly operates, as compared to the exiting safety device, and therefore, the reliability is improved and costs for manufacture and maintenance are reduced.

Description

A LOCKING STRUCTURE FOR DOOR

In particular, the present invention relates to a door locking structure which is interlocked with a locking device released by a key in a cash dispenser or a door of a safe so as to be openable and closable in a door mounted frame so as not to be operated when the locking device is in the locking position So that the security of the door is improved by the safety locking structure so that the door can not be opened.

In general, safes or cash dispensers for storing cash or valuables are basically equipped with a safe lock against theft, but it should be considered that there are no locks that can not be released by the development of the release technology for locks today.

In addition to the development of the unlocking technique, the door hinge or the lock portion is damaged by using a hammer or a welding machine to break the locking state or to break the hinge to which the door is rotatably mounted, In reality, it is difficult to guarantee complete protection by a locking device in reality.

Accordingly, in the case of a cash dispenser installed in a public place, at least the time required for releasing the door lock state is delayed so that the theft of the thief There is also a point of view of the improvement of the structure in the direction of giving up the intention itself.

For this purpose, cash dispensers installed in public places are equipped with a double locking device, which, in addition to the electrical or mechanical locking device installed on the door, is interlocked with the locking device or separately on the inside of the door Is provided with a safety lock.

As an example of this prior art, Korean Registered Patent No. 10-0576080 discloses a sliding plate which reciprocates, a door locking portion for locking or unlocking the door in accordance with movement of the sliding plate, a lock driving portion for switching the rotation of the door knob to reciprocating motion of the sliding plate, An operating lever including a latch portion and a slide hinge portion and including a stopper rotatably mounted on the door and a latch portion corresponding to the latch portion and pivoting in response to a key or an electronic locking device; And a solenoid which is electrically connected to the electronic lock and rotates the actuating lever.

Korean Patent Laid-Open Publication No. 10-2013-0113111 published on Oct. 13, 2013 discloses a locking device provided on the inner surface of a door and selectively locking the door to a target object, a protection provided on the inner surface of the door to cover the locking device A cover, a sensing wire provided between the door and the protective cover so as to be cut off from the outside in response to a forced entry from the outside, and an emergency locking portion for restricting the door when the sensing wire is broken to the object, Discloses a locking device for a door in which an emergency locking portion is activated and the door is restrained by the object when the sensing wire is broken by the door.

However, the door locking device of the above-mentioned patent has a complex connection structure in which a large number of parts are coupled to the inside of the door, thereby increasing a manufacturing cost and a manufacturing cost of the door, There arises a problem that difficulty arises in maintenance.

Korean Registered Patent No. 10-0576080 (registered on 26.04.2005) Korean Patent Laid-Open Publication No. 10-2013-0113111 (published Oct. 15, 2013)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a door locking device for a door security system which can prevent unauthorized locking of a locking plate interlocked with a locking device inside a door even if the locking device is broken in a locked state, And a safety locking structure that prevents the door from being opened, thereby providing a door locking structure with improved security.

Another object of the present invention is to provide a door locking structure in which the cover is integrally formed with the door so that the door hinge to which the door is rotatably installed can not be detached from the outside.

In order to achieve the above object, a door lock structure according to the present invention is characterized in that it comprises a lock device having a catch protruded and retracted when opened and closed, a groove engaging with the catch, A cam plate rotatably connected to the cam plate, guide slots formed in a plurality of guide pins which are connected to the cam plate to be movable between a locked position and an unlocked position and fixed to the inside of the door, And a locking plate formed at an outer end thereof with engaging protrusions engageable with vertical holes formed in end members provided on the body in which the door is installed.

Wherein the cam plate has a cam shape in which a radius of a portion opposite to the radius of the groove-formed portion engaging with the lock of the lock device is increased, a slot extending toward the rotation center is formed at the increased radius, And the fixing pin is fixed to a locking plate disposed between the cam plate and the inner side surface of the door.

The locking plate is moved downward by the locking protrusions inserted into a hole in a direction perpendicular to the end member of the main body corresponding to the free end when the door is closed in the main body in which the door is installed at the locking position, So that the locking protrusions are lifted up from the holes.

The cover portion is integrally provided at a plurality of places on the fixed end side of the door so as to protect the hinge connecting the door rotatably with the main body, the cover portion has an outwardly bent shape protruding inward from the door, The mounted support portion may further include openings for allowing the cover portion to pass therethrough so that when the door is closed, the cover portion is disposed on an outer side of the rear side of the hinge through the opening of the hinge support portion .

The guide slot is guided by the guide pin. The guide slot has a curved shape, and the locking plate moves in a direction away from the end of the door according to a radius of the cam plate when the cam plate rotates.

The door locking structure according to the present invention can be configured such that even when the lock of the lock device is unlocked, the cam plate can be pivoted by the handle of the door front to unlock the lock plate and even if the main lock device is broken, The locking plate can not be operated outside and the safety of the cash dispenser or safe can be improved.

In addition, the door lock structure according to the present invention has less engaging parts than the conventional safety lock device, smooth operation, improved operational reliability, and reduced manufacturing and maintenance costs.

In addition, according to the present invention, since the cover is integrally formed on the door so as to enclose the hinge for holding the door rotatably from the outside in the closed state of the door, the door can not be detached so that the security of the safe or the cash dispenser There is an effect of improving the property.

1 is a schematic perspective view of an ATM.
FIG. 2 is a perspective view showing an improved locking structure according to the present invention installed inside the door of the cash dispenser of FIG. 1; FIG.
FIG. 3 is a perspective view specifically illustrating an improved locking structure and a hinge protecting structure in FIG. 2;
4 is a front view schematically showing a locking plate in a closed and locked state of the door;
5 is a view showing a locking plate interlocked with opening and closing of a door locking device.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the present invention are shown.

1 is a schematic perspective view of a cash dispenser to which the present invention is applied. The knob 4 of the lock device 3 mounted on the inner side of the door is provided on the front surface of the door 2 rotatably provided on the main body 1, And a lever 6 for rotating the cam plate is provided. The locking device can be configured to be dial, key, or electrically operated.

2 to 4, the door locking structure of the present invention is provided with a groove 7 that is provided in the locking device 3 and engages with a catch 8 projected and retracted when opened and closed, A cam plate 10 rotated by a lever 6, and a locking plate 20 connected to the cam plate and movable to a lock position and a release position.

The cam plate 10 is formed such that the outer end face of the cam plate 10 has a radius different from that of the portion 12 in which the groove 7 engaging with the lock 8 of the locking device 3 is formed, The radiused portion 13 has an increased radius of the opposite side portion 13 and a radially enlarged portion 13 is formed with a slot 15 extending toward the center of rotation 11. A fixing pin 17 And the fixing pin is fixed to the locking plate 20 disposed between the cam plate 10 and the inner side surface of the door.

A plurality of guide pins 23 fixed to the inner surface of the door are formed in the guide slot 22 so as to be inserted into the guide slots 22, The locking plate 20 is moved horizontally and vertically, that is, in the direction away from the end portion of the door and in the up-and-down direction, according to the radius of the cam plate 10 that changes when the cam plate 10 is rotated.

At the outer end of the locking plate 20, locking protrusions 25 are formed to protrude outwardly. In this regard, the main body in which the door is installed is provided with a locking protrusion 25 corresponding to the free end of the door when the door is closed Holes 27 in a direction perpendicular to the end members 26 provided at the ends of the main body are formed at a plurality of places.

The height of each of the plurality of holes 27 formed in the end member 26 of the main body 1 of the cash dispenser is set so that the height of each of the engaging projections 25 at the raised position of the locking plate 20 in the door Respectively. In this state, when the locking plate is lowered, the locking projection 25 is lowered and engaged, so that the free end of the door is engaged with the end member 26 of the main body 1 and can not be opened.

The association operation of the locking device 3 of the door, the cam plate 10 and the locking plate 20 and the hole 27 formed in the end member 26 of the main body 1 will be described with reference to Fig. 6 .

2 to 4, in which the lock 5 of the door lock device is engaged and locked with the cam plate 7, the lock pin 17 fixed to the inside of the door is inserted into the guide slot 22 of the locking clay 20, Which is shown on the leftmost side in Fig. 5 with the locking plate lowered and the locking projection 25 engaged with the hole 27 to lock the door.

In this state, when the locking device 3 is released from the locked state, the lock 8 is retracted and the cam plate 10 is disengaged. At this time, when the lever 6 is rotated, (FIG. 5). At this time, as the horizontal portion of the guide slot 22 of the locking plate is guided by the guide pin 23, The locking plate is moved in a direction away from the end member 26 of the main body and in a fully raised state of the locking plate, the locking plate is completely disengaged from the end member 26 of the main body as seen in the rightmost view of Figure 5 , So that the door can be opened.

Therefore, in order to open the door from the outside in order to open the door from the outside, the lock is released and the lock is released, and then the lever is rotated to lift the locking plate 20 to open the end member 26 of the main body 1, The door can be opened only when the locking projections 25 are lifted up to the height of the holes 27 formed in the door. As a result, if the locking device is damaged from the outside and can not be operated, the lock can not be disengaged from the cam plate and the cam plate can not be rotated by the lever, so that the locking plate 20 provided inside the door The door can not be opened and the security can be improved.

The door locking structure of the present invention is also provided integrally at a plurality of places on the fixed end side of the door for protecting the hinge 30 connecting the door rotatably with the main body. The cover portion 31 has an outwardly curved shape protruding inward from the door, and flanges 32 are formed at the upper and lower ends for rigidity reinforcement. On the other hand, openings 36 are formed in the support portion 35 on which the hinge 30 is mounted so that the cover portion 31 can pass through.

Thus, when the door is closed, the cover portion 31 is disposed behind the hinge, that is, on the outer side, through the opening 36 of the hinge support portion 35. As a result, although the hinge can be damaged from the outside, As a result, the door can not be detached from the main body, so the safety and security of the money or valuables contained in the main body is further improved.

Although the cash dispenser has been described in the above embodiment, it is obvious that the cash dispenser may be applied to a safe or other storage box.

The present invention can be applied to a cash dispenser or a door of a safe so that the door can not be opened or removed arbitrarily, thereby improving security.

1: Body 2: Door
3: Lock 7: Home
10: cam plate 20: locking plate
22: guide slot 23: guide pin
25: stopper 26: end member
27: Hole 30: Hinge
31: cover part 35: support part
36: opening

Claims (5)

A locking device (3) provided with a catch (8) projecting and retracted when opened and closed,
A cam plate 10 formed with a groove 7 engaging with the pawl and pivoted by a lever 6 on the front surface of the door upon unlocking,
Guide slots (22) connected to the cam plate and guided by a plurality of guide pins (23) fixed to the inside of the door so as to be movable between a locked position and an unlocked position are formed and correspond to a free end when the door is closed (20) formed at an outer end thereof and engageable with a vertical hole (27) formed in an end member (26) provided at an end of a main body to which the door is installed, . The cam plate according to claim 1, characterized in that the radius of the portion (13) opposite to the radius of the portion (12) where the groove (7) engaging with the lock (8) The portion 13 of increased radius is formed with a slot 15 extending toward the turning center 11 and a fixing pin 17 is mounted on the slot. 10) and a locking plate (20) disposed between the inner side surface of the door. The locking plate (20) according to any one of the preceding claims, wherein the locking plate (20) has a hole (27) in a direction perpendicular to the end member (26) of the body corresponding to the free end of the door And the locking protrusions (25) are arranged to be lifted up from the holes (27) together with the locking plate at the releasing position. The door according to claim 1, wherein a cover portion (31) is integrally provided at a plurality of places on the fixed end side of the door so as to protect the hinge (30) connecting the door rotatably with the main body, The support portion 35 on which the hinge 30 is mounted is formed with openings 36 such that the cover portion 31 can pass therethrough so that when the door is closed , And the cover portion (31) is arranged on the outer side of the rear side of the hinge through the opening (36) of the hinge support portion (35). 2. The cam plate (10) according to claim 1, wherein the guide slot (22) guided by the guide pin (23) Is moved in a direction away from the end portion of the door and in a vertical direction.

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