JPH05205146A - Outer door locking device of automatic vending machine - Google Patents

Abstract

PURPOSE:To improve the operability by providing a tension spring extended and racked between a first lock cam and a second lock cam for locking the first lock cam to an engaging position with a receiving metallic fixture, a release slider, a rotary cam connected to a cylinder lock provided on a door side and a cable for connecting the rotary cam and the release slider. CONSTITUTION:When a door 2 is closed, a first lock cam 12 provided on the door side is engaged with a receiving metallic fixture 10, and simultaneously, a second lock cam 13 locks the first lock cam 12 to an engaging position and the door 2 becomes a lock state. On the other hand, when a cylinder lock 16 is inserted into a key 17 and turned, the second lock cam 13 is oscillated through a rotary cam 18, a cable 20 and a slider 15 and released from the first lock cam 12, and by spring force of a tension spring 14, the engagement of the first lock cam 12 and the receiving metallic fixture 10 is released, and the door becomes a state that it can be opened freely. In this case, when force is removed after a key operation, the rotary cam 18 is returned automatically by spring force of a return spring 19 attached to the rotary cam, and a key can be drawn out as it is.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a key-operated type outer door locking device for a display door of a vending machine which can be opened and closed.

[0002]

2. Description of the Related Art In a conventional vending machine, a laterally opening type door is generally used as an outer door, and a lock device provided on the door is unlocked and locked by a key operation. Also,
A conventional key-operated door lock device equipped on such a laterally-opening outer door includes a cylinder lock provided on the outer door, a cam that interlocks with a key operation of the lock, and a vertically movable slider that follows the movement of the cam. It consists of a metal fitting provided on the cabinet body side, and when the outer door is closed and the key is removed, the slider descends by its own weight and engages with the metal fitting on the body side to lock the space between the outer door and the cabinet. It's locked. When unlocking the door lock device, a key is inserted into the lock and turned. As a result, the slider is pulled up via the cam, and the engagement with the receiving fitting is released.

On the other hand, recently, the design of cabinets for vending machines has tended to be diversified. As an example, as shown in FIG. 6, the outer door is divided into upper and lower parts and the upper door is opened vertically as a display door. Formulas have been developed. In the figure, reference numeral 1 denotes a cabinet body of a vending machine, and a cabinet body 1 is provided with outer doors 2 and 3 which are vertically divided into two. Here, the lower outer door 3
Is provided with a product outlet 4, a coin slot 5, a change outlet 6, etc., and is locked to the cabinet body 1 via the door lock device similar to the above. On the other hand, the outer door 2 on the upper side is a display door having a fan-shaped cross section provided with a product sample 8, a product selection button 9 and the like in the illumination room, and the upper edge of the rear part of the door is hinged to the cabinet body 1 to open up and down. It becomes a door. When the vending machine is sold, the door lock device provided between the lower door 3 and the lower door 3 is locked with the door 2 closed as shown in (a) of FIG. The lock device is unlocked and the door 2 is opened upward as shown in FIG. A gas cylinder (not shown) or the like is provided between the cabinet body 1 and the door 2 to push and hold the door 2 in the open position.

[0004]

By the way, when a door lock device is provided on the above-mentioned open-close type display door 3, a lock similar to the above-mentioned side-open type door lock device is provided due to the restriction of the outer shape of the door. The device cannot be applied as is. That is, since the display door 3 has a short vertical dimension and the cross-sectional shape of the door is fan-shaped, it is not possible to secure a sufficient space for incorporating a vertically movable slider that falls on the door by its own weight. Therefore, for such a display door 3 that can be opened and closed vertically, it is necessary to develop a new door lock device configured to be installed sideways here by utilizing the space on the back side of the front edge frame portion having a narrow width. ..

The present invention has been made in view of the above points, and it is an object of the present invention to provide a novel key-operated door lock device suitable for an upper and lower openable outer door for a display door of the vending machine. To aim.

[0006]

In order to achieve the above object, a door locking device of the present invention is provided with a receiving metal fitting mounted on a fixed side and the outer door side so as to engage with the receiving metal fitting. A first lock cam, a second lock cam that locks the first lock cam at an engagement position with a metal fitting, and a tension spring stretched between the first lock cam and the second lock cam. A release slider loosely fitted to the tip of the second lock cam, a rotary cam connected to a cylinder lock provided on the door side, and a line connecting the rotary cam and the release slider. And

Further, in the outer door locking device having the above construction, as a means for simplifying the key operation, a return spring for returning the key to the original position after the key operation of the cylinder lock is provided on the rotary cam connected to the cylinder lock. Is provided.

[0008]

With the above construction, when the door is closed, the first lock cam provided on the door side engages with the receiving metal fitting and at the same time the second lock cam is engaged.
Lock cam locks the first lock cam in the engaged position to hold the door in the locked state. On the other hand, when the key is inserted into the cylinder lock and turned, the second lock cam oscillates via the rotary cam, the rope, and the slider to separate from the first lock cam, and the spring force of the tension spring causes the first lock cam to move. The door is free to be opened by releasing the engagement with the receiving bracket. Also, in this case, if the force is released after the key operation, the spring force of the return spring attached to the rotary cam will automatically return to the rotary cam, and the key inserted in the cylinder lock will return to the original position, so you can remove it freely. The key operation is easy.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction and operation of a door lock device according to an embodiment of the present invention applied to the display door 2 of a vending machine shown in FIG. 6 will be described below with reference to the drawings. In each drawing, 10 is a receiving metal fitting provided at the center of the upper end surface of the lower door 3, 11 is a lock cam mounting washer facing the receiving metal fitting 10 and attached to the lower end surface of the display door 2, and 12 is a shaft on the washer 11. The supported first lock cam, 13 is a second lock cam that is juxtaposed to the first lock cam 12 and is pivotally supported by the washer 11, 14 is a tension spring stretched between the tips of the lock cams 12 and 13, and 15 is the second lock cam. A release slider loosely fitted and coupled to the tip of the lock cam 13, 16 is a cylinder lock mounted side by side with the washer 11 on the front end of the display door 2, 17 is a key of the cylinder lock 16, and 18 is a cylinder lock 1
6 is a rotary cam, 19 is a return spring attached to the rotary cam 18, and 20 is the rotary cam 18 and the release slider 1 described above.
5 is a line that is connected to each other, and each of these parts constitutes a door lock device for the display door 2.

Here, the receiving metal fitting 10 is fixed to the upper surface of the lower door 3 by screwing, and the trapezoidal receiving bracket which is erected upward has a square hole 10a which engages with the first lock cam 12 and the claw portion.
Is open. On the other hand, the first lock cam 12 has bifurcated claws 12a and 12b, and is pivotally supported by a washer via a pin 12c. In addition, the second lock cam 13 is the first
Claw portion 13a engaging with the claw portion 12b of the lock cam 12 of
And is pivotally supported by the washer 11 via the pin 13b. Further, the tip end of the second lock cam 13 is loosely fitted and coupled to an elongated hole formed in the release slider 15.

With such a structure, the display door 2 is shown in FIG.
In the state of being closed and superposed on the lower door 3 as shown in (a), as shown in FIG. 1, the claw portion 12a of the first lock cam 12 enters into the square hole 10a of the receiving metal fitting 10 and engages with it. The second to the claw portion 12b of the first lock cam 12 at the position.
The claw portion 13a of the lock cam 13 meshes with each other, and the lock state is maintained by the spring force of the tension spring 14. Therefore,
In this locked state, the display door 2 cannot be opened.

On the other hand, when the display door 2 is opened, the key 17 is first inserted into the cylinder lock 16 and turned clockwise. This allows the rotary cam 18 together with the key 17 to
Rotates, and pulls the release slider 15 to the right side through the cord 20. As a result, the second lock cam 13 together with the slider 15 swings rightward about the pin 13b as a fulcrum, and the pawl portion 1
3a and the claw portion 12b of the first lock cam 12 are disengaged, and the tension spring 14 swings the first lock cam 12 counterclockwise. As a result, as shown in FIG. 2, the claw portion 12 a of the first lock cam 12 is connected to the square hole 1 of the receiving metal fitting 10.
The lock between the receiving metal fitting and the receiving fitting is released and the display door 2 can be freely opened as shown in FIG. 6 (b). Here, when the force applied to the key 17 is released after the lock is released, the rotating cam 18 is reversely rotated by the spring force of the return spring 19 to release the constraint between the release slider 15 and the first lock cam 13 and to release the cylinder lock. The key 17 inserted in 16 is returned to the original insertion position. Therefore, the key 17 can be immediately removed from the cylinder lock 16 without turning it again.

Next, when the display door 2 is pulled down from the open position to the closed position again, immediately before the door is closed, the claw portion 12b of the first lock cam 12 abuts against the front edge of the receiving metal fitting 10 forming the tapered surface, and the entire lock cam is reached. Rotates clockwise around the pin 12c. As a result, the first lock cam 1
The second claw portion 12a re-enters the square hole 10a of the receiving metal fitting 10 and is engaged with each other as shown in FIG. 1, and at the same time, the claw portion 12b is engaged with the claw portion 13a of the second lock cam 13 and is connected to this position. It is locked and locked. Incidentally, the operation of the key 17 is not necessary in the process of the door lock operation.

[0014]

As described above, according to the door lock device of the present invention, each component constituting the door lock device is laterally incorporated in the narrow space of the front edge frame portion of the vertical door. The door lock device can be unlocked smoothly by moving the release slider in the horizontal direction by the key operation of the cylinder lock, and the door can be locked automatically by closing the outer door.

[Brief description of drawings]

FIG. 1 is a plan view of a main part showing a locked state of a door lock device according to an embodiment of the present invention.

FIG. 2 is a lock release state diagram of FIG.

FIG. 3 is a plan view showing a peripheral mechanism of a cylinder lock connected to the main part of FIG.

FIG. 4 is a rear view of FIG.

FIG. 5 is a side view in which FIG. 1 and FIG. 3 are combined.

FIG. 6 is a perspective view showing a configuration of an automatic vending machine according to the present invention, in which (a) is a state diagram in which a display door is closed
(B) shows the open state of the display door

[Explanation of symbols]

 2 Display door (upper and lower open / close type outer door) 10 Receiving metal fitting 12 First lock cam 13 Second lock cam 14 Tension spring 15 Release slider 16 Cylinder lock 17 Key 18 Rotating cam 19 Return spring 20 Rope

Claims (3)

[Claims] 1. A lock device for an upper and lower opening / closing type outer door equipped on a vending machine, comprising: a metal fitting mounted on a fixed side, and a metal fitting provided on the outer door side so as to engage with the metal fitting. A first lock cam, a second lock cam that locks the first lock cam at an engagement position with a receiving metal fitting, a tension spring stretched between the first lock cam and the second lock cam, A release slider loosely fitted to the tip of the lock cam No. 2 and a rotary cam connected to a cylinder lock provided on the door side;
An outer door lock device for a vending machine, comprising a cord connecting the rotary cam and the release slider, wherein the door lock is released by a key operation of a cylinder lock. 2. The outer door locking device according to claim 1,
An outer door locking device for a vending machine, wherein a rotary cam connected to the cylinder lock is provided with a return spring that returns the key to its original position after the key of the cylinder lock is operated. 3. The outer door locking device according to claim 1,
An outer door lock device for a vending machine, wherein the upper and lower open outer doors are display doors provided on the upper front side of the vending machine.