KR100937770B1 - Locking device having improved locking function - Google Patents

Abstract

PURPOSE: A locking device for strengthening the lock function is provided to simplify the structure by operating plural locking plates at the same time by a center gear. CONSTITUTION: A locking device for strengthening the lock function comprises a case(20), a center gear(40), and a locking unit(50). A lock unit(10) is fixed to the front of the case that the key hole is exposed. A back cover(80) is connected to the rear of the case. The center gear is fixed to a rotating body(12) projected to the rear side of the lock unit. The locking unit has rack units(52,62) geared with the center gear. The locking unit comprises first and second movable plates(51,61), and the third movable plate(71) connected to the first and second movable plates.

Description

Locking device having improved locking function

The present invention relates to a locking device with enhanced locking function.

ATMs or cash dispensers (CDs) are equipped with built-in or external safety deposit boxes to store cash. Therefore, a locking device for preventing theft of cash is needed.

In general, the locking device is locked in such a manner that one locking plate is inserted into or withdrawn from a groove installed in the door frame of the safe housing, so that when the locking plate itself is damaged by an external impact, it is deformed. The door is likely to open.

Therefore, there is a need for a locking device having a plurality of locking plates that can withstand external shocks well.

Accordingly, it is an object of the present invention to provide a locking device that is resistant to external shocks by having a plurality of locking plates that operate simultaneously.

Another object of the present invention is to provide a locking device having a plurality of locking plates, yet having a simple structure, low production cost, and a simple operation method.

The above object, the lock unit is fixed so that the key hole is exposed on the front surface, the back cover is coupled to the case; A center gear fixed to a pivot that protrudes from the back side of the lock unit; The first gear and the second movable plate and the first gear and the second movable plate to move away from or close to each other in the first direction according to the rotational direction of the center gear and the rack portion for gear coupling with the center gear; A locking function is achieved by a locking device that has a locking function including a locking unit composed of a third movable plate engaged with the first and second movable plates so as to move in a direction different from the first direction.

Preferably, a nut may be screwed to an outer surface of the body of the lock unit in the case to fix the lock unit to the case.

Further, preferably, the first and second movable plates have protrusions protruding from the front or the rear surface, and the third movable plates are inclined at a predetermined angle to extend integrally and have a pair of legs formed with guide slots. And the projection is inserted into the guide slot to move the leg along the inclined direction so that the third movable plate is linearly moved.

Preferably, the leg can extend upward or downward from the unit.

Here, the first direction may be a horizontal direction, and the second direction may be a vertical direction.

According to the above configuration, the locking function is improved by a plurality of locking plates that are simultaneously operated, and at the same time, the external shock is distributed to each of the locking plates, so that the external shock is strong.

In addition, since a plurality of locking plates are simultaneously operated by the center gear, the structure is simple, and thus, the manufacturing cost is low, and the operation method is simple, so that there is less trouble.

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

1 is an exploded perspective view showing a locking device according to the present invention.

Referring to FIG. 1, the locking device according to the present invention includes a lock unit 10, a case 20 having an open rear surface, a nut 25 fixing the lock unit 10 to the case 20, and a support plate 30. , The center gear 40 coupled to the lock unit 10 to rotate, the screw 42 coupling the center gear 40 to the lock unit 10, and the center gear 40 coupled to the center gear 40 to lock and move. The pulley is composed of a locking unit 50 and a back cover 80 covering the case 10. Among these components, the nut 25, support plate 30 and screw 42 may be omitted or replaced with other configurations.

Lock unit (10)

The lock unit 10 is formed of a body 11 and a rotating body 12 which is positioned inside the body 11 at a front surface and rotated by a key, and a key hole is formed at the front surface of the rotating body 12 to be exposed. The rear surface of the pivot 12 protrudes from the body.

Case (20)

The case 20 has a through hole (not shown) in which the lock unit 10 is fitted on the front surface thereof, and the back surface of the case 20 is detachably coupled to the case cover 20.

In addition, openings 21, 22, and 23 are formed on both side surfaces and the upper surface, and the openings 21, 22, and 23 are fitted with slides of the first to third movable plates 51, 61, and 71 as described later. do.

The support boss 24 protrudes integrally at each corner of the front inner side of the case 20, and the support plate 30, which will be described later, is fixed thereon.

Nut (25)

Nut 25 serves to securely lock the lock unit 10 to the case 20 in the interior of the casing 20 by screwing the screw formed on the outer surface of the lock unit 10.

Unlike this embodiment, the nut 25 may be omitted and the lock unit 10 may be fixed by spot welding while the lock unit 10 is inserted into the case 20, and thus, the lock unit 10 may be fixed to the case 20. Should not be limited to this embodiment.

Support plate (30)

A through hole 32 is formed at the center of the body 31 of the support plate 30, and a screw hole 33 is formed at four corners thereof, and the lock unit 10 passes through the through hole 32, and the screw hole 33 is formed. ) Is screwed into the support boss 24 to fix the support plate 30 on the support boss 24.

The support plate 30 provides a separated space in which the first to third movable plates 51, 61, and 71 of the locking unit 70 can slide between the back cover 80.

Center Gear (40)

The center gear 40 is composed of a single body 41, the through hole 41 is formed in the center, the rotating body 12 of the lock body 10 is fitted into the through hole 41. In this state, as will be described later, the rotating body 12 and the center gear 40 are engaged by the screw 42 engaging the rotating body 12 through the through hole 41.

Locking unit (70)

The locking unit 70 is composed of a first movable plate 51, a second movable plate 61, and a third movable plate 71, which simultaneously perform linear movement.

The first and second movable plates 51 and 61 are arranged in pairs to face each other in a symmetrical shape, and the third movable plate 71 is slidably with the first and second movable plates 51 and 61. To combine.

In detail, the first and second movable plates 51 and 61 have rack portions 52 and 62 formed at portions facing each other in a bar shape in which a middle portion is bent, and the protrusions 53, 63) is formed. That is, the rack parts 52 and 62 are arranged up and down at regular intervals, and the center gear 40 is inserted therebetween, so that the center gear 40 and the rack parts 52 and 62 are gear-coupled. As a result, the center gear 40 serves as the pinion.

In addition, both sides of the third movable plate 71 are provided with a pair of legs 72 and 74 which are inclined at a predetermined interval to extend integrally downward and have guide slots 73 and 75 formed thereon. And the projections 53 and 63 of the second movable plates 51 and 61 are fitted into the guide slots 73 and 75.

By such a coupling structure, when the first and second movable plates 51 and 61 linearly move horizontally, the protrusions 53 and 63 move equally, and thus the guide slots into which the protrusions 53 and 63 are fitted ( Legs 72 and 74 formed with 73 and 75 are moved up and down along the inclined direction.

In this embodiment, the legs 72 and 74 extend below the third movable plate 71 as an example, but the legs 72 and 74 may extend upwards without being limited thereto.

In addition, although the protrusions 53 and 63 protrude to the rear surfaces of the first and second movable plates 51 and 61 as an example, the present invention is not limited thereto and may protrude to the front side, in which case the third movable plate 71 is provided. Is located in front of the first and second movable plates 51 and 61.

Back cover (80)

It consists of a plate-shaped single body 81 of the back cover 80, the through hole 82 may be formed in the center thereof.

The operation of the locking device having the above structure will be described below.

2 and 3 are views for explaining when the locking device is locked and when it is released.

First, an operation of locking the locking device will be described with reference to FIG. 2.

When the key is inserted into the key hole of the lock body 11 and rotated in either direction, the rotating body 12 rotates, thereby rotating the center gear 40 fitted to the rotating body.

As described above, the center gear 40 is disposed between the rack portions 52 and 62 of the first and second movable plates 51 and 61 and is gear-coupled with the rack portions 52 and 53 so that the center gear ( In response to the rotation of 40, the rack parts 52 and 53 make linear motions, and as a result, the first and second movable plates 51 and 61 make linear motions in a direction away from each other.

At the same time, the legs 72 and 74 on which the guide slots 73 and 75 on which the projections 53 and 63 of the first and second movable plates 51 and 61 are fitted are moved by the movement of the projections 53 and 63. As a result of the linear movement along the inclined direction, the third movable plate 71 is linearly moved upward.

Accordingly, the first and second movable plates 51 and 61 are drawn out to the maximum by linear motion in a direction away from each other, and the third movable plate 71 is drawn out to the maximum by linear motion upwards, thereby eventually reaching maximum. It is locked by the first to third movable plates 51, 61, 71 which are drawn out.

As such, since the locked state is maintained by the plurality of movable plates drawn out in different directions, even if an impact is applied from the outside, the amount of impact is dispersed, so that the movable plate is not easily deformed, and thus, the movable plate is difficult to open.

Meanwhile, referring to FIG. 3, when the key is inserted into the key hole of the lock body 11 and rotated in the opposite direction, the rotating body 12 rotates, and thus the center gear 40 coupled to the rotating body rotates. Since the direction opposite to the above, the first and second movable plates 51 and 61 make a linear motion in a direction close to each other.

At the same time, the legs 72 and 74 of the third movable plate 71 linearly move along the inclined direction due to the movement of the projections 53 and 63, so that the third movable plate 71 linearly moves downward. Do it.

Therefore, the first and second movable plates 51 and 61 are drawn to the maximum by linear motion in a direction close to each other, and the third movable plate 71 is drawn to the maximum by linear motion upwards, thereby eventually reaching the maximum. The lock is released by the first to third movable plates 51, 61, and 71 introduced into.

Here, the maximum inlet positions of the first to third movable plates 51, 61, and 71 may be maintained at the same level as the inlets of the openings 21, 22, and 23 formed in the case 20.

In the above description, the embodiment of the present invention has been described, but various changes can be made at the level of those skilled in the art. Therefore, the scope of the present invention should not be construed as being limited to the above embodiment, but should be interpreted by the claims described below.

1 is an exploded perspective view showing a locking device according to the present invention.

2 and 3 are views for explaining when the locking device is locked and when it is released.

Claims (5)

A case in which the lock unit is fixed so that the key hole is exposed at the front side, and the back cover is coupled at the back side; A center gear fixed to a pivot that protrudes from the back side of the lock unit; The first gear and the second movable plate and the first gear and the second movable plate to move away from or close to each other in the first direction according to the rotational direction of the center gear and the rack portion for gear coupling with the center gear; It includes a locking unit consisting of a third movable plate coupled to the first and second movable plate to move in a direction different from the first direction, The first and second movable plates have protrusions protruding from the front or the rear surface, the third movable plates are inclined at regular intervals and integrally extended and have a pair of legs formed with guide slots, And the projection is inserted into the guide slot, and the third movable plate is linearly moved by moving in a direction in which the leg is inclined. The method according to claim 1, And a nut screwed into an outer surface of the body of the lock unit in the case to fix the lock unit to the case. delete delete The method according to claim 1, And the second direction is perpendicular to the first direction.

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