JPS6227988Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The invention can be used, for example, in automatic vending machines, automatic ticket vending machines,
Alternatively, the present invention relates to an automatic locking device suitable for implementation in a toll box such as an automatic toll collection machine, or a safe.

[Conventional technology]

Conventional locking devices used for opening/closing lids of the above-mentioned fare boxes, etc. are generally locks that are opened and closed by inserting a duplicate key into the keyhole. There were many accidents where keys were jammed and could be easily pried open, or foreign objects were stuffed into the keyhole and destroyed it.

Therefore, an alarm device was devised that would detect this abnormality and issue an alarm if a foreign object such as a tool other than a duplicate key is inserted into the keyhole, protecting the locking device from unauthorized unlocking and destruction.

[Problem that the invention attempts to solve]

However, the above-mentioned alarm device has the disadvantage that it is useless if the power is cut off or if the alarm device itself is destroyed before the lock is unlocked illegally, and no matter how many alarm devices are installed, As long as keyholes exist, there will be no end to accidents in which tools or other foreign objects are inserted into the keyhole, resulting in unauthorized unlocking or destruction.
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Therefore, the technical problem of the present invention is to eliminate the problematic keyhole from the locking device and to enable locking and unlocking without using a duplicate key.

[Means for solving problems]

The measures taken in the present invention to solve the above technical problems are as follows.

(1) Inside the lock case, which is attached to a fixed frame to which the opening/closing plate is pivotally attached, and which has a lock hole into which the tip of the key hook attached to the opening/closing plate is inserted and locked, there is a surface near the lock hole. A pair of upper and lower lock pieces are provided protrudingly provided between the two lock pieces to lock the tip of the key hook that is rotated and inserted through the lock hole from both the upper and lower sides and to prevent the key hook from turning to unlock. A lock retaining edge and an unlock retaining edge are provided on the lock housing, and a slide shaft is provided protruding from the back surface of the other side, and this slide shaft is slidable and rotatable into a long hole provided horizontally in the back plate of the lock housing. Provide a locking plate with a built-in structure.

(2) Similarly, inside the lock case, the entire lock plate is engaged with the base stopper provided on the lock case side by the lower lock piece, and the above lock is attached to the trigger pin protruding into the lock case. A spring is provided that engages the retaining edge and constantly pulls it in the direction of the lock hole.

(3) Similarly, inside the lock case, when a solenoid attached to the lock case is energized, it is pulled and rotated, pushing the above-mentioned lock plate away from the lock hole against the traction force of the spring. Using the pulling force of the spring, the entire lock plate is removed from the base stopper, and the lock retaining edge is removed from the trigger pin to rotate the lock plate backwards out of the rotation range of the key hook. At the same time, an unlocking arm is provided for engaging the unlocking holding edge with the trigger pin.

[Effect]

The above means works as follows.

According to the element (1) above, when the opening/closing plate is closed, the key hook is rotated, and its tip is inserted into the lock hole of the lock case attached to the fixed frame, a primary lock is achieved, and then the lock plate is locked. The tip of the key hook is held between the upper and lower lock pieces provided on the top and bottom, creating a secondary lock that prevents the key hook from turning to unlock. It becomes impossible to unlock even if you turn it directly by hand.

According to the above element (2), the lower lock piece of the lock plate holding the tip of the key hook is engaged with the base stopper provided on the lock case by the traction action of the spring, and Since the lock retaining edge is engaged with the trigger pin and the free rotation of the lock plate is stopped at these two points, the key hook is completely locked.

According to element (3) above, when the solenoid is energized, the unlocking arm rotates, presses and rotates the lock plate against the spring, and rotates backward out of the rotation range of the key hook. The hook can be rotated by hand to unlock the lock plate, and the lock plate can be held in the unlocked state by engaging the unlock holding edge with the trigger pin. When unlocking, it is sufficient to send an excitation signal to the solenoid without using a duplicate key, and there is no need to provide a lock hole.

As described above, the above-mentioned technical problem can be solved by the above-mentioned means, and the problems of the conventional technology can be solved.

〔Example〕

Hereinafter, a preferred embodiment of the automatic locking device according to the present invention will be described in detail with reference to the accompanying drawings.

In Figures 1 and 2, the symbol X indicates the fixed frame, and the symbol Y indicates the opening/closing plate attached to the fixed frame X so that it can be opened and closed. . For example, when the present invention is applied to the various fare boxes mentioned above, the fixed frame X becomes the body frame of a vending machine, etc., and the opening/closing plate Y is freely opened and closed at the fare box outlet of this body frame. This may be an attached cover plate or door, but this is of course an example of implementation. Also,
Also generally indicated by the reference numeral 1 is a lock case attached to the inner surface of the fixed frame X, and this lock case 1
A lock hole 1a for receiving a tip 2a of a key hook 2 rotatably attached to the opening/closing plate Y is opened in the side end surface of the lock plate. 2b is a knob shaft to which the key hook 2 is attached, and a suitable knob (not shown) is attached to the outer end of this shaft 2b.

Next, numeral 3 is a lock plate housed in the lock housing 1 so as to be operable, and 3a and 3b are attached to one side surface of this lock plate 3 in order to lock the tip 2a of the key hook 2 from both sides. Upper and lower protrusions spaced apart〓〓〓〓〓
A pair of lock pieces are shown. Reference numeral 4 denotes a slide shaft protruding from the back surface of the other side of the lock plate 3, and this shaft 4 is fitted into an elongated slide hole 1b horizontally provided in the back plate 1' of the lock housing 1 so as to be movable and rotatable. ing. 5 is a spring stretched between the upper end piece 3c of the lock plate 3 and the hanging piece 5a protruding from the lock hole 1a;
This spring 5 has the effect of constantly pulling the entire lock plate in the direction of the lock hole 1a, and rotating the lock plate around the slide shaft 4 in the clockwise direction in the drawing.

Reference numeral 6 denotes a solenoid attached to the upper surface of the lock housing 1 via a bracket 7, and the root end 8a of an unlocking arm 8 formed in a substantially V-shape is connected to the tip of the solenoid core 6a. There is. The entire unlocking arm 8 is rotatably attached to the inner bottom of the lock housing 1 with a shaft 9, and its tip 8b is always in contact with the roller 4a of the slide shaft 4. 10 is a stopper for the unlocking arm 8, and 11 is an emergency unlocking lever that can replace the solenoid 6 and allow the unlocking arm 8 to be rotated manually. Reference numeral 12 designates a base stopper with which the lower lock piece 3b of the lock plate 3 engages when the lock shown in FIG.
is kept in the locked state shown in FIG.

Next, a device for holding the lock plate 3 in the locked state shown in FIG. 1 or in the unlocked state shown in FIG. 2 will be explained according to the drawings. 3' indicates the upper and lower lock pieces 3a, 3b, the inner upper side of this notch 3' forms a flat locking holding edge 13a, and this holding edge 13a
A bulging portion 13b is provided to protrude downward at a right angle corner where the vertical front end surface of the lock plate 3 intersects with the front end surface of the lock plate 3. Further, reference numeral 14 denotes a locking protrusion that projects laterally from the root portion of the upper locking piece 3a protruding from the lock plate 3, and the lower side of the tip of this protrusion 14 and the vertical front end surface of the lock plate 3 are connected to each other. The substantially right-angled corner thus formed constitutes an unlocking holding edge 13c.

Furthermore, in each of FIGS. 1, 2, and 4, 15 is a guide hole drilled in the back plate 1' of the lock housing 1, and this hole 15 is a horizontal hole connected to the lower end of the vertical hole. It is formed into a roughly L-shape. A trigger pin 16 is movably inserted into the guide hole 15 from the back side of the lock case 1, and the tip of the pin projects into the inside of the lock case 1. As shown in FIGS. 5 and 6, the trigger pin 16 has a trigger 18 which is pivoted on the back of the lock housing 1 with a mounting shaft 17 so as to be able to move up and down and rotate freely.
The entire trigger 18 is attached to the mounting shaft 17 and the lower end hanging piece 18a of the trigger 18.
It is constantly pulled in the direction (upward) of the mounting shaft 17 by a spring 19 stretched between the mounting shaft 17 and the mounting shaft 17 . Reference numeral 18b is an elongated hole into which the mounting shaft 17 installed vertically on the trigger 18 is fitted in order to enable vertical movement and rotation of the trigger 18. A pulling force is constantly applied to the trigger pin 16 to pull it up in the direction of the mounting shaft 17 within the guide hole 15. Further, the tip of the trigger pin 16 protruding into the lock case 1 from the guide hole 15 is connected to the lock plate 3.
When the base stopper is in the locked state shown in FIG. 1, it is elastically engaged with the aforementioned lock holding edge 13a as shown in the same figure under the traction action of the spring 19, and thus the base stopper is 12 to lock the lock plate 3 in the locked state, and when the lock plate 3 is phase-shifted and rotated to the unlocked state shown in FIG. It is structured so that it can elastically engage with the unlocking holding edge 13c to maintain the unlocked state of the locking plate 3.

Note that the trigger pin 16 is attached to the unlocking holding edge 13c.
When the trigger pin 16 is engaged with the guide hole 1
In order to move the side hole 5 in the direction of the lock hole 1a and accordingly tilt the entire trigger 18 to the state shown by the dotted line in FIG. 2, the trigger pin 16 is accurately unlocked by the pulling force of the spring 19. Retaining edge 13c
can be engaged with.

Since the present invention has the above-described configuration, the lock is first locked by turning the key hook 2 by operating the handle and inserting its tip 2a into the lock hole 1a, and then the lock is first locked. A secondary lock is achieved by locking the end 2a of the key hook 2 with the lock plate 3, and the lock is completely locked. Even if you try, the lower lock piece 3b
The lock plate 3 is completely locked and cannot be rotated by the base stopper 12 engaged with the lock retaining edge 13a and the trigger pin 16 engaged with the lock holding edge 13a, so the key hook 2 is moved between the upper and lower lock pieces 3a, 3b and cannot rotate to unlock.

〓〓〓〓〓
When unlocking such a lock, the solenoid 6 is energized and the unlocking arm 8 is moved to the second position with the shaft 9 as the fulcrum.
Just rotate it in the clockwise direction as shown in the figure. When the unlocking arm 8 rotates, the tip 8b pushes the slide shaft 4 to the left in the drawing along the slide elongated hole 1b, so that the entire lock plate 3 moves in the direction away from the lock hole 1a, that is, in the drawing. Similarly, it is moved to the left, and further, under the traction of the spring 5, it is rotated clockwise around the slide shaft 4 as a fulcrum as shown in FIG. When the lock plate 3 is moved and rotated in this manner, the lower lock piece 3b moves away from the base stopper 12 and retreats out of the rotation range of the key hook 2, as shown in FIG. 16 climbs over the bulge 13b and engages with the unlocking retaining edge 13c, so even if the solenoid 6 is turned off, the unlocked state of the lock plate 3 is maintained and the unlocking rotation of the key hook 2 is enabled. be able to.

When locking the lock again, rotate the key hook 2 in the clockwise direction (upward) in FIG. 3 may be rotated in the counterclockwise direction in the drawing around the slide shaft 4. When the lock plate 3 is rotated in this way, the trigger pin 16
The lock plate 3 comes off from the unlocking holding edge 13c.
The whole is pulled back by the spring 5 and rotated back to the locked state shown in FIG. 1, and the key hook 2 is again locked between the upper and lower lock pieces 3a and 3b to maintain the lock.

〔effect〕

As described above, according to the automatic locking device of the present invention, the lock can be unlocked by operating a switch installed in a remote location or a secret location inside the aircraft to excite the solenoid, and Locking is performed automatically by rotating the key hook,
Since a duplicate key is not used at all to open and close the lock, and there is no keyhole, it is possible to completely prevent accidents such as unauthorized unlocking using tools such as a screwdriver, or damage caused by filling with foreign objects. It has the advantage of having a simple structure with a small number of parts, and being able to reliably perform the locking and unlocking functions, and is particularly prone to theft and vandalism in vending machines. It is suitable for use in a fare box or safe of a machine, automatic ticket vending machine, automatic toll collection machine, etc.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention,
Figure 1 is a front sectional view showing the locked state, Figure 2 is a partially omitted front sectional view showing the unlocked state, and Figure 3 is a front sectional view showing the unlocked state.
The figure is a side sectional view of the part seen in Figure 1 A, Figure 4 is a configuration diagram explaining the relationship between the trigger pin and the guide hole, and Figure 5
The figure is a rear view of the trigger, and FIG. 6 is a sectional view taken along line A--A in FIG. 5. X is the fixed frame, Y is the opening/closing plate, 1 is the lock case, 1' is the back plate, 1a is the lock hole, 1b is the slide slot, 2 is the key hook, 2a is the tip, 3 is the lock plate, 3a is the top Lock piece, 3b is the lower lock piece, 4 is the slide shaft, 5 is the spring, 6 is the solenoid, 8 is the unlocking arm, 12 is the base stopper, 13a is the lock holding edge, 13c is the unlocking holding edge, 16 is the trigger pin. 〓〓〓〓〓

Claims (1)

[Scope of utility model registration request] A lock housing 1 is attached to the inner surface of a fixed frame X to which an opening/closing plate Y such as a door or an opening/closing lid is pivotally mounted, and the opening/closing plate Y is rotated with respect to a lock hole 1a opened in the side end face of this lock housing 1. Tip 2a of key hook 2 attached for easy operation
In a locking device that locks by inserting a key, a key hook 2 is rotatably inserted into the inside of the lock case 1 from the lock hole 1a on the surface near the lock hole 1a.
Lock the tip 2a of the key hook 2 from both upper and lower sides.
a pair of upper and lower locking pieces 3a for restraining the unlocking rotation of the
3b protrudingly provided, and a locking holding edge 13a and an unlocking holding edge 13c are provided between both locking pieces 3a, 3b,
A lock plate has a structure in which a slide shaft 4 is protruded from the back surface of the other side, and this slide shaft 4 is fitted into a long hole 1b horizontally provided in the back plate 1' of the lock housing 1 so as to be slidable and rotatable. 3 is attached, and also inside the lock case 1 is a base stopper 12 which covers the entire lock plate 3 with the lower lock piece 3b provided on the lock case 1 side.
a spring 5 that constantly pulls in the direction of the lock hole 1a so as to engage the lock holding edge 13a with the trigger pin 16 protruding into the lock housing 1;
When the solenoid 6 attached to the lock housing 1 performs an excitation motion, it is pulled and rotated, pushing the lock plate 3 in the direction away from the lock hole 1a against the traction force of the spring 5, and the entire lock plate 3 is rotated. The above spring 5
The lower locking piece 3b is removed from the base stopper 12 in cooperation with the pulling force of
Remove a from the trigger pin 16 and attach the key hook 2.
An automatic locking device comprising an unlocking arm 8 which is rotated backward out of the rotation range of the locking arm 8 and which engages the unlocking holding edge 13c with the trigger pin 16.