JPS5833345B2 - safe deposit box lock - Google Patents

Description

[Detailed description of the invention] The present invention relates to a safe deposit box lock.

Safe deposit boxes currently installed in banks, etc. are equipped with a safe deposit box lock that can be unlocked in the presence of a bank employee. It has a double lock structure.

In addition, each safe deposit box has a protective box inserted into it to store cash, documents, etc., and when the door is opened, customers can take them in and take them out.

Furthermore, the safe deposit box lock has a structure that allows the customer's convenience to be locked and the bank lock to be locked at the same time due to the action of a spring.

Since the bank key is removed by the bank staff after the lock is unlocked, the customer cannot freely lock or unlock the door while handling the protective box.

Therefore, when a customer leaves his/her place temporarily, he/she must leave the key inserted in the door, and there is a risk that someone else may take a photo of the key during this time.

Although it is safe to lock the door and remove the key, the customer has to call the bank staff again to put the protective box in, which is troublesome for both the customer and the bank staff.

However, if you were to make it possible to freely lock and unlock the depository door using only the customer lock, the original double lock would lose its meaning.

Therefore, the door can be locked and unlocked using only the customer's key while the customer takes the protective box outside, and once the protective box is stored inside the refrigerator, it returns to the original double locking mechanism. This will solve the above problem.

The present invention provides such a safe deposit box lock, in which the running plate is divided into two parts, one on the customer lock side and one on the bank gun side, and both are connected by a catch lever, so that when the door is opened and the protective box is taken out, This lever is designed to be uncoupled.

Therefore, the customer can lock and unlock the door using only the guest key during this time.

Once the protective box is inserted and the door is closed, the catch lever reconnects both running plates, and if the lock is locked in this state, the bank lock is also locked at the same time, returning to the original double lock.

The catch lever is linked to the sensing lever of the protective box, and when the sensing lever is pushed into the lock box by the protective box, the catch lever connects both running plates, and when the protective box is not present, the sensing lever comes off from the catch lever. At the same time, the catch lever releases the running plate connection due to the action of the spring.

Embodiments of the safe deposit box lock of the present invention having such characteristics will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a cross-sectional view of a safe deposit box, showing the door in a closed state.

One end of the door 1 is in contact with a frame 2, and the other end is rotatably attached to a frame (not shown) on the opposite side.

Two cylindrical parts 5 and 6 having key holes pass through the door 1, and the key holes of each cylindrical part reach a customer lock tumbler 7 and a bank lock tumbler 8, respectively.

The frame frame 2 constitutes the wall of each safe deposit box and also serves as a partition.

Furthermore, the frame frame 2 has a stepped portion 2a, the door 1 abuts on the outer surface of the stepped portion 2a, and a locking bolt 9 protrudes and engages on the inner surface.

The lock box 3 is attached to the back side of the door 1 with all the lock members inside, and is shown by imaginary lines in the drawing for convenience of explanation.

The customer lock tumbler 7 and the bank lock tumbler 8 are rotatably supported by guide pins 11 and 12 implanted in the lock box 3.

The bolt 9 is formed integrally with the running plate 10, and locks the door 1 by protruding.

The running plate 10 is provided with a protrusion 14, which normally collides with the lock tumbler 7 to prevent the bolt 9 and the running plate 10 from being retracted.

Each tumbler 7, 8 (only one is shown in Figure 2) has grooves formed at different positions, and can be rotated by inserting a predetermined key into the key hole of the cylindrical part 5, 6. When these grooves are aligned, the projections 14, 15 can be inserted into them, and the bolt 9 and running plate 10 can therefore be retracted.

The bank key only aligns the grooves of the tumbler 8, but the customer key aligns the grooves of the tumbler 7 in the first half of the rotation, and retracts the bolt 9 and running plate 10 in the second half of the rotation. I can do it.

Protective box 4 is for storing cash, documents, etc., and door 1
You can open it and take it in and out of the refrigerator.

The explanation up to this point is the same as that of a conventional safety deposit box equipped with a double lock.

Next, the characteristic parts of the present invention are shown in an enlarged front view in FIG. 2.

As can be seen from this figure, the running board is first divided in the center and divided into a running board 10 on the customer lock side and a second running board 13 on the bank side.

There is a U-shaped catch lever 16 at the upper right end of the running board 10.
One end of the catch lever 16 is pivotally connected, and the other end of the catch lever 16 engages with a groove 17 as a retaining portion provided in the second running plate 13.

Further, the catch lever 16 is urged by the spring 18 in the direction of leaving the groove 1γ, that is, in the counterclockwise direction in the figure.

In this figure, since the sensing lever 19 presses the catch lever 16 downward, the tip of the lever 16 is engaged with the groove 17, but as shown in FIG. leaves the groove 17.

The sensing lever 19 is for sensing the presence or absence of the protective box 4, and as can be seen from FIG.

Furthermore, since the sensing lever 19 is biased clockwise by the spring 21, it protrudes in the direction of the arrow if the protective box 4 is not present.

Although not shown, a microswitch or a reed switch is linked to the sensing lever 19, and according to the pivoting operation of the lever 19, a signal is sent to the center as to whether the protective box 4 is present or not.

In order to make it easier to understand the relationship between the sensing lever 19 and the catch lever 16, this part is shown in a longitudinal section and a side view in FIG.

When the sensing lever 19 comes into contact with the protection box 4 and is pushed into the lock box 3, the lever 19 moves in the direction of the arrow and presses the catch lever 16 downward, and the tip of the catch lever 16 touches the second running plate 13. It engages with the groove 17 of.

In order to reduce the impact that occurs when the sensing lever 19 comes into contact with the catch lever 16, and to transmit the acting force of the sensing lever 19 to the catch lever 16 without waste, it is necessary to There are methods such as chamfering to form tapered portions 16a and 19a as shown in FIG. 3, or forming a gentle convex shape.

Other methods include tilting the rotation axis of the sensing lever 19 so as to make the angle between the rotating direction of the sensing lever 19 and the rotating direction of the catch lever 16 as small as possible.

Next, the order of use and operating condition of the safe deposit box lock of the present invention will be explained.

First, as shown in FIG. 1, when the bank key 23 is inserted into the key hole of the cylindrical portion 6 and rotated, the grooves of the bank lock tumbler 8 are aligned.

Next, when the customer key 22 is inserted into the key hole of the cylindrical part 5 and rotated, the groove of the customer lock tumbler 7 will be aligned with the lock 1 in the first half of the rotation, and the bolt 9 and the running board 10 will be aligned in the second half of the rotation. And the second running plate 13 is pulled in together.

Here, when the customer opens the door 1, the sensing lever 19 protrudes in the direction of the arrow due to the biasing force of the spring 21, and accordingly, the catch lever 16 is moved to the second running plate 13 by the action of the spring 18 as shown in FIG. It will come off from the groove 17.

Even if the customer takes out the protective box 4 from inside the refrigerator and closes the door 1, the state shown in FIG. 4, that is, the state in which the running plates 10 and 13 are separated, continues.

Therefore, when the customer leaves the post with the protective box 4 taken out,
The bolt 9 and the running board 10 can be made to protrude using only the customer key 22.

At this time, the second running plate 13 does not move at all, so the protrusion 15
remains fitted in the groove of the bank lock tumbler 8, and therefore the bank lock is not automatically locked.

When the customer finishes work and puts the protective box 4 into the refrigerator and closes the door 1, the end face of the protective box 4 pushes the sensing lever 19 into the lock box 3, and as a result, the tip of the catch lever 16 moves again. It engages with the groove 17 of the second running plate 13.

When the customer turns the key 22 with both running plates 10 and 13 connected, the bolt 9, running plate 10, and second running plate 13 project together.

Once the protrusion 15 of the second running plate 13 is released from the groove of the tumbler 8, the tumbler 8 is rotated counterclockwise by a spring biasing force (not shown) as shown in FIG.
The lock cannot be re-unlocked using only the customer key 22, and the lock returns to the original double lock.

As detailed above, according to the safe deposit box lock of the present invention, the door can be opened and closed using only the customer's key while the protective box is being taken out, thus providing convenience for customers without sacrificing the advantages of a double lock. be able to.

Furthermore, the present invention provides a low-cost and useful safe-deposit box lock that minimizes the addition of new members, since the running plate of the conventional safe-deposit box lock is only slightly modified and a catch lever and a sensing lever are attached. It is something.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of the safe deposit box showing the locked state of the safe deposit box lock of the present invention, Fig. 2 is a front view showing the inside of the safe deposit box lock, and Fig. 3 is a longitudinal sectional view showing the relationship between the sensing lever and the catch lever. figure,
FIG. 4 is a front view showing a state in which the lock can be locked and unlocked using only the customer key. 1... Door, 2... Frame, 3...
・Lock box, 4...Protection box, 7...Customer lock tumbler-18...Bank lock tumbler-19...
... Bolt, 10... Running board, 13...
2nd running plate, 16...Catch lever 16a
...Tapered part of catch lever, 17...
...Groove, 19...Sensing lever, 19a...
...Tapered part of sensing lever, 22...Customer key, 23...Bank key.

Claims (1)

[Scope of Claims] 1. A safe deposit box lock comprising a running plate with a bar, and a customer lock and a bank lock linked to the running plate in a lock box, wherein the running plate is provided with a bar and a customer lock. A catch lever is attached to one of the divided running plates so as to move integrally with the other running plate. At the same time, one end of the catch lever can be engaged with or disengaged from an engaging portion provided on the other divided running plate,
Furthermore, the catch lever is constantly biased in a direction to disengage from the engaging portion, and a sensing lever is attached to the lock box, the sensing lever being biased toward the interior of the refrigerator so that one end thereof protrudes toward the interior of the refrigerator. , when one end of the sensing lever comes into contact with a protection box inside the refrigerator, the sensing lever engages one end of the catch lever with the engaging portion of the other running plate, thereby removing the separated running plate. A safe deposit box lock characterized by being integrally formed. 2. The sensing lever has a substantially fan shape, is pivotably supported on a horizontal plane, and has one end biased by a spring in a direction protruding into the refrigerator, and the catch lever is pivotably pivoted to the one running plate. When one end of the sensing lever comes into contact with a protective box inside the refrigerator and is pushed into the lock box, the sensing lever slides into contact with the catch lever, causing the one end of the catch lever to slide against the other running plate. The safe deposit box lock according to claim 1, which is engaged with the engaging portion of the invention. 3. The catch lever has a U-shape, one tip of the U-shape is pivotably attached to the one running plate, and the other tip engages with an engaging portion of the other running plate. A safe deposit box lock according to claim 1 or 2. 4. The safe deposit box lock according to claim 2 or 3, wherein the corner portions where the sensing lever and the catch lever come into contact are chamfered. 5. Claim 2, wherein a roller is provided on either one of the surfaces where the sensing lever and the catch lever come into contact.
Safe-deposit box lock described in Section 3 or Section 3. 6. The safe deposit box lock according to claim 1 or 2, wherein the engaging portion of the other running plate is a groove.