JPH063097Y2 - Locking device to prevent door opening of vending machines - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is a door-opening prevention lock device for preventing a theft accident in which a locked door of a vending machine is destroyed and a product stored inside is stolen. Is.

[Conventional technology]

Vending machines installed in stores or on the roadside are prone to malicious theft during nights when traffic is low.

The door of the vending machine has a lock installed inside and locked, but one after another, the malicious theft of opening the door or destroying the door by stealing the goods stored inside at night when traffic is low. It has occurred.

In order to prevent such theft, a simple method has been adopted in which a chain C is wrapped around the vending machine A and secured with a padlock L as shown in FIG.

[Problems to be solved by the device]

Although the above-mentioned simple method can suppress the malicious opening of the door, it has the following problems.

(a) Since the chain C is wrapped around the vending machine A, the length of the chain C becomes long and the usability is poor.

(b) Since the padlock L connected to the chain C can be oriented so that the key slot can be easily picked, it is difficult to prevent malicious unauthorized opening of the door.

(c) The chain C or the padlock L directly hits the vending machine and has a drawback that it causes a scratch or a scratch on the periphery of the vending machine.

The present invention has been made to solve such problems.

[Means for Solving the Problems]

The present invention has a lock having a key insertion port on the lower surface and a rod that can open a chain that has been locked by unlocking,
It comprises a chain fixing part and a chain with one end locked to the chain fixing part and the other end locked to the lock. The lock is provided on one of the door or the frame of the vending machine and the chain fixing part is provided on the other. Provided.

[Action]

(Unlocking operation) When the key is inserted into the key insertion opening provided on the lower surface of the lock and rotated in the unlocking direction, the lock rod is unlocked and movable.

Next, when the rod is pulled up, the rod is separated from the chain link and the chain is removed.

(Locking operation) When the inside of the chain link is overlapped with the rod movement path and the rod is pushed down, the rod penetrates the chain and is locked by the lock, so that the chain is locked by the rod.

〔Example〕

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

In the perspective view of FIG. 6, reference numeral B is a door D of the vending machine A.
Is a lock provided near the edge of the surface of the.

The structure of the lock B is, as shown in the longitudinal sectional view of FIG. 1, the partially cutaway front view and the bottom view of FIG. 3, a body 1 having a mounting surface 1a attached to a door D. A cylinder lock 2 is installed in the lower part of the.

In the cylinder lock 2, the rotor 3 is inserted into the hole 1b formed in the body 1, and when the key K is inserted into the rotor 3 from the key insertion port 4 provided on the lower surface of the rotor 3, the rotor 3 is rotated. Is rotatable, and the eccentric pin 5 erected on the upper end surface of the rotor 3 is eccentrically rotated about the rotation center of the rotor 3.

A horizontal hole 6 is formed above the rotor 3 of the body 1, and a claw 7 having a cylindrical outer peripheral surface is inserted into the hole 6 so as to be slidable in the axial direction.

The claw 7 is provided with a claw 8 at its tip, and a flat surface 9 in contact with the upper surface of the rotor 3 is engraved at the lower portion of the outer peripheral surface.

A groove 10 is provided at a substantially central portion of the plane 9 in a direction perpendicular to the axis of the claw 7, and the eccentric pin 5 is loosely fitted in the groove 10.

Therefore, the claw 7 rotates with the rotor 3 and the eccentric pin 5 rotates.
The groove 10 engaged with slides in the hole 6.

An embolus 11 is press-fitted or caulked at the inlet end of the hole 6, and a spring 12 is inserted between the embolus 11 and the claw 7.

The body 1 is provided with a bottomed hole 13 orthogonal to the hole 6,
A spring 14 is inserted into the bottom 13a of the hole 13, and a rod pin 15 having flanges 15a at both upper and lower ends is slidably fitted on the spring 14.

A stopper pin 16 that protrudes from the inner peripheral surface of the hole 13 and interferes with the flange portion 15a is press-fitted into the body 1 to limit the movement amount of the rod pin 15.

A groove 17 having a width that intersects with the hole 13 and accommodates one end of the chain C is formed in the body 1, and a rod 18 slidably inserted into the hole 13 penetrates the groove 17 when the rod 18 penetrates the groove 17. Passes through the link at one end of the chain C to lock the chain C.

The rod 18 has an annular recess 18a near the lower end, and pushes the rod pin 15 at the lower end surface of the rod 18 while
The claw 8 of the claw 7 biased by the spring 12 is configured to engage with the recess 18a when the claw 8 is lowered.

The body 1 is provided with a hole 19 that opens to the hole 13.
The pin 20 is slidably inserted into the pin 9.

Reference numeral 21 is a knock pin locked in the hole 19 by press fitting or caulking, and a spring 22 is inserted between the knock pin 21 and the pin 20.

Female screws 23 are screwed onto the mounting surface 1a of the body 1 at two locations, and the bolts 2 screwed into the female screw 23 from the inside of the door D
4 and a nut 25 screwed onto the bolt 24
Is fixed to the door D (see FIG. 2).

Fig. 5 shows the chain C attached to the side of the frame E of the vending machine.
Shows a chain fixing part that locks one end of the U, and the chain fixing part is composed of a U bolt 26 having a male screw part 26a penetrating the side wall surface of the frame E, a nut 27 for fastening the U bolt 26, and a nut washer 28. .

In this embodiment, the lock B is provided on the door D and the chain fixing portion is provided on the frame E, but the lock B may be provided on the frame E and the chain fixing portion may be provided on the door D.

The operation of the door opening prevention lock device of the vending machine configured as described above will be described.

(Unlocked state) FIG. 4 is a vertical cross-sectional view showing the unlocked state of the lock B. The rod pin 15 receives the pressing force of the spring 14 and rises to the position where the lower flange portion 15a contacts the stopper pin 16. Therefore, the claw 8 of the claw 7 pressed by the spring 12 abuts the upper flange 15a, and the rotor 3 having the eccentric pin that engages with the groove 10 of the claw 7 is rotated in the unlocking direction. is there.

The rod 18 is raised to a position where the pin 20 is engaged with the recess 18a, and the chain C in the groove 17 is removed.

Therefore, the other end of the chain C whose one end is locked by the U bolt 26 of the chain fixing portion provided on the side surface of the frame E is open.

(Locking) As shown in FIG. 1, when the other end of the chain C is inserted into the groove 17 and the rod 18 is pressed downward, the pin 20 pressed by the slope of the recess 18a retreats to the left and the rod 18 moves. To descend. The rod 18 descends while pushing the rod pin 15 downward, and when the recess 18a descends to a position where it overlaps with the claw 8, the claw 7 receiving the pressing force of the spring 12 moves to the right and the claw 8 engages with the recess 18a. To enter.

As the claw 7 moves to the right, the rotor 3 having the eccentric pin 5 that engages with the groove 10 rotates to the locking position, and the lock B is locked (see FIG. 1). If the key K that can be removed is removed, the locking operation is completed.

As described above, the rod 18 penetrating the other end of the chain C
The lock B is locked by a simple operation of pressing downward.

(Unlocking) When the key K inserted in the key insertion port 4 is rotated in the unlocking direction, the claw 7 is rotated by the eccentric pin 5 which rotates together with the rotor 3.
Moves to the left, the claw 8 is separated from the recess 18a, and the claw 8
The rod 18 unlocked from the engagement with can be lifted, and the rod pin 15 pressed by the spring 14 has the lower flange portion 15a.
Rises until it abuts Stoppin 16, and rod pin 1
The rod 18 ascends by the amount of ascent of 5.

If you pick up the raised rod 18 and pull it up, the chain C
Can be easily removed.

[Effect of device]

 The present invention has the following effects.

(a) Since it is no longer necessary to wind the chain around the vending machine, it is easy to attach and detach the chain when locking and unlocking.

(b) Conventionally, a padlock or chain connected to a chain hits the vending machine, and the surface of the vending machine was easily scratched or scratched.However, the present invention shortens the chain and locks the lock to the vending machine. The chain is stable and there is no risk of scratches.

(c) Since the key insertion port of the lock is on the lower surface, it is difficult to pick and it is difficult to be unlocked illegally.

In addition, there is no possibility that water or dust may enter through the key insertion port.

(d) In the unlocked state, the rotor 3 cannot return to the locked position because the claw 8 of the claw 7 is in contact with the flange portion 15a of the rod pin 15 even when the lock is rotated in the key locking direction. Without removing the key, there is no risk of forgetting or losing the key.

[Brief description of drawings]

1 to 6 show an embodiment of the present invention, FIG. 1 is a sectional view of the lock in a locked state, FIG. 2 is a partially cutaway front view of the same, FIG. 3 is a bottom view of the lock, Fig. 4 is a sectional view of the lock in an unlocked state, Fig. 5 is a front view of the chain fixing part, Fig. 6 is a perspective view of a vending machine equipped with a door opening preventing lock device, and Fig. 7 is a conventional opening device. It is a perspective view of the vending machine equipped with the door locking device. A ... Vending machine, B ... Lock, C ... Chain, D ... Door, E ... Frame, 1 ... Body, 2 ... Cylinder lock, 3 ... Rotor, 4 ... Key insertion port, 5 ... Eccentric pin, 7 ... Claw, 8 ... claws, 10 ...
Grooves, 12, 14, 22 ... Spring, 15 ... Rod pin, 17
... Grooves, 18 ... Rods, 18a ... Recesses, 20 ... Pins, 24
… Bolts, 26… U bolts.

Claims (1)

[Scope of utility model registration request] 1. A vending machine comprising a frame and a door that opens and closes an opening of the frame, wherein one of the frame and the door is provided with a chain fixing part for fixing one end of a chain, and the other is provided. A lock device for preventing door opening of a vending machine, comprising a key insertion opening on the lower surface and a lock having a rod that opens the other end of the chain locked by unlocking.