JPH0444777Y2 - - Google Patents

Description

[Detailed Description of the Invention] <<Field of the Invention>> This invention relates to a locking device for a safe that improves convenience when locking.

《Prior art and its problems》 In the locking device of a safe, a bar handle can be operated only when the combination lock is adjusted to a predetermined position. It is known that the lock is unlocked by pulling out the bolt from the bolt hole.

However, when locking with this type of locking device, it is necessary to operate the bolt handle, insert the bolt rod into the bolt hole, and then move the dial of the combination lock from its predetermined position. be.

In this way, it is very troublesome to have to break the dial every time you lock the door, and there is also the inconvenience that the lock is not locked because you forget to break the dial.

<<Purpose of the invention>> The object of this invention is to provide a locking device for a safe that is configured so that the dial is broken and the lock is completed simply by operating the bolt handle.

《Structure and effects of the invention》 In order to achieve the above object, this invention has a combination lock that responds to dial operation and has a bolt that appears on one side of the casing; ,
a running plate disposed on the inside of the safe door so as to be able to reciprocate along the width direction of the safe door; a bolt hole formed on the side wall of the safe and into which the bolt rod is inserted and removably inserted; the protruding bolt a locking handle for operating the movement of the running plate, the locking handle being rotatably attached to the safe door and having an engaging protrusion that engages with the locking handle; a motion conversion mechanism for converting; provided at the other end of a coil spring whose one end is fixed to the running plate, and formed in the tumbler constituting the combination lock when the bolt lever comes out of the bolt hole and is in the unlocked state; and an engaging protrusion that engages with the restoring force of the coil spring; and the coil spring returns when the lock is locked, when the running plate's bolt rod is inserted into the bolt hole as the bolt handle rotates; A tumbler rotation mechanism that rotates the tumbler through force-based engagement between the engagement protrusion and the engagement portion of the tumbler.

According to this configuration, when the running plate is moved by operating the bolt handle, the coil spring contracts and curves, and its return force causes the engagement protrusion to push the engagement portion of the tumbler and rotate the tumbler. . Therefore, the dial is automatically turned off, and locking is completed only by operating the bolt handle.

《Explanation of Examples》 An embodiment of this invention will be described below.

As shown in FIG. 1, the locking device for a safe according to this invention includes a pair of left and right combination locks 1, 1; a running plate 2 formed with three bar rods 2a formed on one side in the transverse direction; a safe side wall S; each bolt rod 2a
The bolt holes 3, 3, 3, into which the
A bar handle 4 for operating the running board 2;
It has an engaging protrusion 6 that engages with a tumbler that constitutes the combination lock 1.

The combination lock 1 has a dial on the front side of the safe door at the back of the drawing, and is configured so that the bolt 7 can be made to appear or disappear from one side of the casing by operating this dial in a predetermined manner, and is attached to the safe door 9. There is. Further, the tumbler 5 closest to the front has a notch formed therein with an engaging portion 5a that engages with the engaging protrusion 6. Note that the other structural functions of this tumbler 5 are conventionally known, so their explanation will be omitted.

The running board 2 has a fixed pin 8 fixed to the safe door P.
and the guide groove 2b formed in the running plate 2 are engaged with each other in the width direction of the safe door P (horizontal direction in the figure).
It is arranged so that it can be moved back and forth. That is, the running plate 2 can move along the guide groove 2b and take the bolt rod 2a into and out of the bolt hole 3.

The bolt handle 4 is attached to the safe door P so as to be rotatable around the pivot shaft 4a, and a handle for operating the pivot shaft 4a is provided on the front side of the safe door at the back in the figure.

In addition, the lock handle 4 has a combination lock 1.
A pair of engaging portions 4b that engage with the bolts 7 are formed, and in the locked state (the state shown in FIG. 1), these bolts 7 and the engaging portions 4b engage to restrict operation of the bolt handle 4. Further, the bolt handle 4 is provided with a mounting piece 9, and this mounting piece 9 is formed with a fixing pin 9a. On the other hand, the running plate 2 is provided with a long hole 10, and the fixing pin 9a is provided with a long hole 10.
is engaged within. Therefore, when the bolt handle 4 rotates and the mounting piece 9 rotates, the movement of the mounting piece 9 is transmitted to the elongated hole 10 via the fixing pin 9a, so that the running plate 2 moves in the left-right direction in the figure. Can be moved in a straight line. That is, the rotational movement of the bar handle 4 is converted into a reciprocating movement of the running plate 2 and transmitted. (motion conversion mechanism).

The engaging protrusion 6 is formed into a rod shape, and its tip is arranged so that it can enter the casing through an opening formed on one side 1a of the casing of the combination lock 1 and engage with the engaging portion 5a of the tumbler 5. ing. Further, its base is fixed to one end of a coil spring 11 by welding or the like, and the other end of this coil spring 11 is attached to a mounting piece 1.
2, and this mounting piece 12 is also fixed to the running plate 2 with bolts 13,13.

As shown in FIG. 2, the safe door P is attached to the safe body Q with a hinge R so as to be openable and closable, and the device of the present invention is attached to the inside of the safe door P.

The locking device for a safe according to this invention is constructed as described above, and its operation will be explained next.

When the combination lock 1 is operated in a predetermined manner and the bolt 7 is sunk into the casing, the unlocking notch 5b of the tumbler 5 is at position A, as shown in FIG.
On the other hand, the engaging portion 5b is located at the position shown in the figure.

In this state, when the bolt handle 4 is operated to move the running plate 2 to the left in the figure (the position shown in Figure 3), the bolt rod 2a comes out of the bolt hole 3, and the engagement protrusion 6 is engaged. It engages with the portion 5a and becomes unlocked.

Next, when locking, use the lock handle 4.
When the running plate 2 is rotated to the position shown in FIG. 1 (initial position), the running plate 2 returns to its original position and the bolt rod 2a is inserted into the bolt hole 3.

On the other hand, since the engagement protrusion 6 engages with the engagement portion 5a, the coil spring 11 temporarily curves along its own longitudinal direction. However, since the bolt handle 4 is in the initial position, the bolt 7 is in a state where it can be projected and the tumbler 5 can be rotated. Therefore, the return force of the coil spring 11 rotates the tumbler 5, and the unlocking notch 5b is moved to the position B in the figure.
With this movement, the bolt 7 protrudes from the casing, and the dial is broken. That is, locking is completed by simply operating the bar handle 4.

[Brief explanation of the drawing]

FIG. 1 is an overall schematic view showing a locking device for a safe according to this invention, FIG. 2 is an explanatory view showing the device installed in a safe, and FIG. 3 is an explanatory view showing the operation of the device. 1... Dial lock, 2... Running board, 2a... Bar rod, 2b... Guide groove, 3... Bar hole, 4... Bar handle, 4b... Engaging portion,
5... Tumbler, 5a... Engaging portion, 6... Engaging protrusion, 7... Bolt, 9... Mounting piece, 11...
Coil spring, P...Safe door, S...Safe side wall, Q
...The safe itself.

Claims (1)

[Scope of claim for utility model registration] A combination lock in which a bolt appears on one side of the casing in response to a dial operation; A bolt rod is formed on one side in the transverse direction;
a running plate disposed on the inside of the safe door so as to be movable back and forth along the width direction of the safe door; a bolt hole formed on the side wall of the safe and into which the bolt rod is inserted and removably inserted; the protruding bolt a locking handle, which is rotatably attached to the safe door and has an engaging protrusion that engages with the door; and a locking handle for operating the movement of the running plate; a motion conversion mechanism for converting; provided at the other end of a coil spring whose one end is fixed to the running plate, and formed in the tumbler constituting the combination lock when the bolt lever comes out of the bolt hole and is in the unlocked state; and an engaging protrusion that engages with the restoring force of the coil spring; and the coil spring returns when the locking operation is performed, when the bolt rod of the running plate is inserted into the bolt hole as the bolt handle rotates; A locking device for a safe, comprising: a tumbler rotation mechanism that rotates the tumbler through force-based engagement between the engagement protrusion and the engagement portion of the tumbler.