JPH0522601Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to an improvement of a drawer lock for locking a drawer.

[Conventional technology]

FIG. 7 is a perspective view of a drawer lock installed in an automatic teller machine (hereinafter referred to as ATM).

In the figure, an ATM casing 1 is provided with two upper and lower drawers 2 and 3.
3 stores banknotes.

There are handles 4 and 4 on the front of drawers 2 and 3, respectively.
is provided at the bottom of drawer 3, and drawer 2 is provided at the bottom of drawer 3.
A locking device 5 is provided for locking and unlocking the locks and locks 3 at the same time.

This locking device 5 is, for example,
As described in Publication No. 53168 and Japanese Utility Model Publication No. 56-5754, by turning a key inserted into the cylinder lock 5a, a locking rod (not shown) interlocked with the cylinder lock 5a moves up and down. Although the lock device 5 prevents theft by having a structure in which a plurality of hooks provided on the locking rod are connected to and detached from each drawer, theft cannot be prevented if only the security guard manages the device. A drawer lock as described below is also used.

A conventional example of this drawer lock will be explained based on FIG. 7.

A chain fixing part 6 is attached below the handles 4, 4.

A chain fixing part 6 provided in the drawers 2 and 3,
6 have the same structure, the chain fixing portion 6 of the drawer 3 will be described.

As shown in the partially broken perspective view of the main part in FIG. 8, the chain fixing part 6 includes a U-bolt 7 having a male threaded part 7a penetrating the front wall 3a of the drawer 3, a nut 8 for fastening the U-bolt 7, and Washers for nuts 9
Consists of.

A chain link 10a at the end of the chain 10 is attached to the chain fixing part 6.

The chain 10 is covered with a protective tube 11.

On the right side of drawer 3 is the front wall 1 of casing 1.
A protective plate 12 and a reinforcing plate 13 are attached to the front and back surfaces of a, and a U-bolt 14 having a male threaded portion 14a passing through the casing 1, the protective plate and the reinforcing plate 13, and a nut 15 and a nut 15 for fastening the U-bolt 14. Another chain fixing part 17 is formed by the washer 16.

To lock drawer 3, use chain link 10.
The padlock 18 is inserted by overlapping the middle chamber part of the chain link 10b on the opposite side of a with the hollow part of the U bolt 14, and the padlock 18 is locked.

Thus, drawer 3 cannot be opened.

[The problem that the idea attempts to solve]

As mentioned above, in order to lock the above-mentioned drawer lock, it is necessary to insert the padlock 18 into both hollow parts while keeping the hollow part of the chain link 10b overlapped with the hollow part of the chain fixing part 17. Furthermore, since the padlock 18 must be locked, the locking operation is troublesome.

Furthermore, in order to unlock the drawer lock, it is not easy to operate because it requires the effort of unlocking the padlock and the effort of removing the chain link from the unlocked padlock.

For this reason, a drawer lock that can be locked and unlocked with a simpler operation has been desired.

The present invention has been made to solve this problem.

[Means for solving the problem] In order to achieve the above object, in the drawer lock of the present invention, a cylinder lock insertion hole is provided in the front wall of the casing that accommodates the drawer, and the cylinder lock is loosely fitted into the cylinder lock insertion hole. The cylinder lock was provided with a claw that engaged with the front wall when locked, and the chain fixing part fixed to the front surface of the drawer and the cylinder lock were connected by a chain.

[Effect]

Locking and unlocking operations using the drawer lock configured as described above are as follows.

(Locking) Locking is completed with a one-touch operation of inserting the cylinder lock into the cylinder lock insertion hole.

That is, when the cylinder lock is inserted into the front wall of the casing, the claw engages with the front wall, so that the cylinder lock is locked by the insertion operation of the cylinder lock.

(Unlocking) When the key is inserted into the cylinder lock and turned in the unlocking direction, the engagement between the claw and the front wall is released and the cylinder lock can be removed. It will be unlocked.

Even after unlocking, there is no risk of losing the cylinder lock since it is attached to one end of the chain.

〔Example〕

Embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of an ATM equipped with a drawer lock. Drawers 2 and 3 are provided in a casing 1 of the ATM, and a chain fixing part 6 is fixed to the front surface of the drawers 2 and 3. The chain link 10a at the end of the chain 10 is attached as in the conventional case, but the chain link 10a
A cylinder lock 1 is installed on the chain link 10b on the opposite side.
9 is installed.

The cylinder lock 19 has a key inserted into one end, as shown in a side view in FIG. 2, a longitudinal sectional view in FIG. 3, a plan view in FIG. 4, a front view in FIG. 5, and a rear view in FIG. A plug 20 having an opening 20a is connected to a lock case 21.
is rotatably inserted into the inner peripheral surface of the lock case 2.
1 is inserted into the lock case 22.

A pin 23 is inserted into a hole provided in the lock case 21 and the lock case 22, and the lock case 21 is fixed to the lock case 22 (see FIG. 3).

The plug 20 is provided with a cam pin 20b on the opposite side of the key insertion opening 20a.

The cam pin 20b is eccentric with respect to the axis of the plug 20, and as the plug 20 rotates, the plug 2
It is designed to rotate around the zero axis.

The lock case 22 is fitted into the inner peripheral surface of the cylindrical case holder 24, and the fixing pin 25 is driven into the hole provided in the lock case 22 and the case holder 24, so that the lock case 22 is fixed to the case holder 24. (See Figure 2).

The case holder 24 has a flange 24a at the end facing the key insertion opening 20a.

The lock case 22 and the case holder 24 are provided with a square hole 26 that opens on the outer peripheral surface of the case holder 24. A claw 27 is inserted into the square hole 26 so as to be retractable, and a spring support recess 28 provided in the claw 27 A spring 30 is inserted between the spring supporting recess 29 provided on the inner surface of the plug 22.

Furthermore, the claw 27 has a sliding groove 3 for the cam pin 20b.
1 is provided, and the claw 27 moves the case holder 24 until the end surface of the sliding groove 31 hits the cam pin 20b.
stand out more.

A slope 27a is formed at the tip of the claw 27 on the opposite side of the flange 24a.

A ring-shaped chain holder 32 is inserted into the outer peripheral surface of the case holder 24, and the case holder 2
A clip 34 fitted into a groove 33 provided around the
This prevents the chain holder 32 from coming off.

The chain link 10b at the end of the chain 10 is connected to the hole 35 provided in the chain holder 32 (see FIG. 3).

On the outer peripheral surface of the case holder 24, there are two opposing
A flat surface 24b for preventing rotation is carved at the location (6th
(see figure), a hole 36 having the same shape as the outer peripheral surface contour of this case holder 24 is provided in the front wall 1a of the casing 1, and the protection plate 12 and reinforcing plate 13 attached to the front surface and back surface of the front wall 1a. (See Figures 1 and 3).

The operation of the drawer lock configured as above will be explained.

(Unlocked state) As shown in FIG.
When the drawers 2 and 3 are not inserted, the drawers 2 and 3 are unlocked, and the drawers 2 and 3 can be opened freely and banknotes can be replenished into the drawers 2 and 3.

(Locking operation) When the cylinder lock 19 is inserted into the hole 36, the slope 27a of the claw 27 hits the hole 36, and the claw 27
The cylinder lock 19 is retracted into the case holder 24 against the force of the spring 28, and when it passes through the reinforcing plate 13, protrudes from the case holder 24 again and the cylinder lock 19 is locked.

The drawers 2 and 3 cannot be opened because they are restrained by the chain 10.

(Unlocking operation) When the key inserted into the key insertion slot 20a is turned,
The cam pin 20b rotates together with the plug 20, and the cam pin 20b pushes down the claw 27.
is inserted into the case holder 24, so the cylinder lock 19 can be pulled out from the casing 1.

[Effect of idea]

Since the present invention is configured as described above, it produces the effects described below.

(1) Locking the drawer is completed with a one-touch operation of inserting the cylinder lock into the hole, so it is extremely easy and can be completed in a short time.

The drawer can be unlocked by simply unlocking the cylinder lock and pulling it out from the hole, which is easier than the conventional operation of removing the unlocked padlock from the chain fixing part and the chain.

(2) Since the cylinder lock is always attached to one end of the chain, there is no risk of dropping or losing the cylinder lock.

(3) Conventionally, there was a risk that the padlock connected to the chain fixing part would hit the casing surface and cause bruises or abrasions on the casing surface, but with this invention, the locked cylinder lock does not move and the casing can be moved. There's no risk of getting hurt.

(4) Since the drawer and cylinder lock are always integrally connected to the chain, the drawer can be moved together with the drawer lock when replacing the drawer.

[Brief explanation of drawings]

Figures 1 to 6 show embodiments of the present invention;
The figure is a perspective view of an ATM equipped with a drawer lock, Figure 2 is a side view of the cylinder lock, Figure 3 is a vertical sectional view of the same, Figure 4 is a plan view of the same, and Figure 5 is a front view of the same. FIG. 6 is a rear view of the same as above, FIG. 7 is a perspective view of an ATM equipped with a conventional drawer lock, and FIG. 8 is a partially cutaway perspective view of the main part of FIG. 1... Casing, 1a... Front wall, 2, 3...
Drawer, 6... Chain fixing part, 10... Chain, 12... Protection plate, 13... Reinforcement plate, 19... Cylinder lock, 20... Plug, 20
a...Key slot, 24...Case holder, 2
7...Claw, 30...Spring.

Claims (1)

[Scope of utility model registration request] A cylinder lock insertion hole is provided in the front wall of the casing that accommodates the drawer, and one end of the chain is attached to the cylinder lock having a claw whose outer peripheral surface fits loosely into the cylinder lock insertion hole and which engages with the front wall when locked,
A drawer lock in which the other end of the chain is attached to a chain fixing part fixed to the front surface of the drawer.