JP3146820B2 - Vending machine door lock mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door lock mechanism for a vending machine.

[0002]

2. Description of the Related Art First, a door lock mechanism of a conventional general vending machine is shown in FIG. In the figure, 1 is a main body case of a vending machine in which a product rack or the like is housed, 2 is an outer door provided on the front surface of the main body case 1, and the following door is provided between the main body case 1 and the outer door 2. A lock mechanism is incorporated. The door lock mechanism includes an unlocking operation lever 3 provided on the front surface of the outer door 2, and a slider 5 as a lock plate incorporated in the outer door so as to be vertically movable and connected to the lever 3 via a joint link 4. And a hook fitting 6 protruding forward and attached to the front part of the main body case 1 so as to face the hanging holes 5a opened at two positions above and below the plate surface of the slider 5. Reference numeral 7 denotes a guide for the slider 5. The hook 6 has a hook groove 6a with which the hook hole 5a of the slider 5 engages in a dropping manner, and a tapered guide 6b at the tip for guiding the hook hole 5a of the slider 5 to the hook groove 6a.
Are formed.

In such a configuration, when the door is open as shown, the slider 5 descends by its own weight, and the opening operation lever 3 connected to the slider 5 via the joint link 4 is in a horizontal posture. From this state, do not put your hand on the operation lever 3,
When the outer door 2 is pushed toward the main body case 1, first, the upper edge of the hook hole 5a of the slider 5 hits the hand tapered guide 6b at the tip of the hook fitting 6, and is pushed upward while sliding on the inclined guide surface. At the position where the outer door 2 is fully closed, the hook hole 5a of the slider 5 is
And the outer door 2 is automatically locked in the closed position. After the outer door 2 is closed, the operation lever 3 is closed.
Keep the key locked. On the other hand, when the outer door 2 is to be opened, the lock of the operation lever 3 is unlocked, and then a hand is put on the lever 3 to perform a downward rotation operation. As a result, the slider 5 moves upward through the joint link 4, and the hook hole 5 a comes off the hook groove 6 a of the hook fitting 6. When the operation lever 3 is turned downward and pulled toward the user, the outer door 2 can be freely opened. When the operator releases the operation lever 3 at the door open position, the state returns to the illustrated state.

[0004]

However, the conventional structure described above has the following problems. That is, the tip taper guide 6b of the hook fitting 6 has a maximum inclination angle of 45 in order to guide the slider 5 to slide smoothly.
It is necessary to set to about ゜. On the other hand, when the door 5 is locked, the hanging hole 5a of the slider 5 fits into the hanging groove 6a of the hook fitting 6, that is, the depth A of the hanging groove 6a is set to, for example, 3.
If the depth is set to 0 mm (if the groove depth A is less than 30 mm, the lock may be accidentally released when the outer door 2 is shaken), the slider 5 is moved by a height corresponding to the hanging allowance. In order to push upward along the slope, the protrusion length B of the taper guide 6b must be designed to be at least 30 mm or more, and in fact, to a length of 40 to 50 mm. The size of the protrusion to the front increases. Moreover, the hook 6 is used for the outer door 2.
Is inserted into the door when the door is closed, the thickness C of the outer door 2 becomes larger than the hook protrusion B.

On the other hand, recently, vending machines installed in stores have protruded from the road, which has become a social problem. As a countermeasure, vending machine manufacturers have reduced the depth of the vending machines as much as possible. Thinning is an important theme, and development of thin outer doors is being promoted along this theme. However, in making the outer door thinner, if the protrusion size of the hook metal of the door lock mechanism is large as described above, the outer door cannot be made thinner due to its size.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and has as its object to reduce the protruding dimension of a hook fitting and reduce the thickness of an outer door without impairing a door lock function. To provide a door lock mechanism for the machine.

[0007]

In order to achieve the above-mentioned object, the present invention incorporates a vertically movable slider connected to an opening operation lever into an outer door, and has a hanging hole opened in a plate surface of the slider. In a door lock mechanism of a vending machine that locks an outer door to a closed position by engaging a hook fitting provided to protrude from a front part of a case, between an opening operation lever and a slider,
At the door opening position, a stopper means for locking and holding the slider at an intermediate height position shallower than the hook allowance with the hook fitting is provided.

[0008] The stopper means in the above configuration is specifically formed on a plate surface of the slider by opposing a crank type joint lever connected to the rotation shaft of the opening operation lever and a slide pin attached to the end of the joint lever. An open key-shaped pin engaging groove and a return spring for urging the joint lever toward the standby position are provided, wherein the pin engaging groove opened in the slider is a horizontally elongated groove, and May be provided with a stepped portion which is engaged with a slide pin of a joint lever and holds the slider at that position at an intermediate position in the longitudinal direction.

[0009]

In the above construction, when the operation lever is rotated to open the outer door, the slider is raised via the crank type joint lever, disengagement from the hook fitting provided on the main body case side, and the door is disengaged. Can be opened freely. When the hand is released from the operation lever with the door open, the slider descends by its own weight, but during the downward movement, the slide pin of the joint lever is caught by the stepped portion of the pin engagement groove of the slider, and the slider falls to the final position. Without cutting, it stops at the middle position, which is shallower than the hook allowance with the hook, and is held at this position. Next, when the outer door is pushed in so as to close from the open position, the upper edge of the hook hole of the slider comes into contact with the tapered end guide of the hook fitting at the initial stage, and is pushed up along the inclined surface thereof. During the lifting process, the slide pin of the joint lever is released from the stepped portion of the pin engagement groove by the biasing force of the return spring. Then, at the position where the outer door is pushed completely, the slider falls into the hook groove of the hook fitting, and the door is locked.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction and operation of an embodiment of the present invention will be described below with reference to FIGS.
This will be described with reference to FIG. The same members corresponding to those in FIG. 5 are denoted by the same reference numerals. First, in FIG. 1, a crank type joint lever 8 is coaxially connected to the rear end of the opening operation lever 3 in the opposite direction (phase difference 180 °), and a slide attached to the distal end of the joint lever 8 is provided. A pin engagement groove 5b is opened in the slider 5 so as to engage with the pin 8a. The pin engaging groove 5b is a horizontally long key-shaped groove having a length corresponding to the vertical movement stroke of the slider 5, and a groove stepped portion 5b at which the pin 8a is locked is provided at an intermediate position in the longitudinal direction. -1 is provided.
Further, a return spring 9 is attached to the joint lever 5,
The joint lever 5 and the operation lever 3 are spring-biased toward the horizontal posture standby position.

The opening / closing operation of the door lock mechanism having such a configuration is basically the same as the conventional one shown in FIG. 5, and details of the operation will be described with reference to FIGS. In addition, FIG.
4A, the pin engagement groove 5b of the slider and the joint lever 8 corresponding to the opening / closing operation position of the outer door are shown.
2B shows a state of engagement with the slide pin 8a, and FIG. 2B shows a state of engagement with the slider 5 and the hook fitting 5. FIG.
3 shows a state in which the door is locked, FIG. 3 shows a state during the door opening operation, and FIG. 4 shows a slider holding state after the door opening operation. (A)
Reference symbol O in the figure represents the center of rotation of the opening operation lever 3.

First, in the locked state of the door shown in FIG.
Fits into the hook groove 6a of the hook fitting 6 to lock the outer door 2 in the closed position. In this state, the opening operation lever 3 returns to the horizontal direction, and the slide pin 8a of the joint lever 8 Has moved to the right stroke end with respect to the pin engagement groove 5b. From the locked state of FIG.
When the opening operation lever 3 shown in FIG. 1 is turned downward, the joint lever 8 rotates upward from the horizontal position, and the slider 5 is lifted upward via the pin 8a.
As shown by, the hook hole 5a of the slider 5 comes out above the hook groove 6a of the hook fitting, and the door lock is released. In this state, if the outer door 2 is pulled toward the user, the door can be freely opened. In the lock release state, the slide pin 8a moves to the left stroke end with respect to the pin engagement groove 5b of the slider 5.

On the other hand, when the release lever 3 is released with the outer door 2 open, the slider 5 descends by its own weight, and the joint lever 8 is also driven to return to the horizontal position. 4, the slide pin 8a of the joint lever 8 slides rightward along the upper edge of the pin engagement groove 5b of the slider 5 as shown in FIG. And the slider 5 is locked and held at this position to prevent further downward movement. That is, the slider 5 is held at the middle position, which is shallower than the depth A of the hook groove 6a of the hook fitting 6, without dropping to the end.

When the outer door 2 is pushed again from this position to close the outer door 2, the slider 5 hits the tapered guide 6b of the hook 6 and is pushed upward along the inclined surface. At this time, the slide pin 8a of the joint lever 8 is disengaged from the groove stepped portion 5b-1 by the spring force of the return spring 9 (see FIG. 1) and pressed against the lower edge of the pin engagement groove 5b. Then, when the outer door 2 is pushed to the closed position, the slider 5 rides over the slope of the tapered guide 5b of the hook fitting 6 and falls into the hanging groove 6b, so that the door is locked as shown in FIG.

As is apparent from the above description, when the door is open, the slider 5 is at the middle position, which is shallower than the hook allowance with the hook fitting 6 (corresponding to the depth A of the hook groove 6a) as shown in FIG. Since the lock is held, the protrusion dimension D of the taper guide 6b of the hook 6 required for closing the outer door 2 and guiding the slider 5 to the door lock position from this position is shown in FIG.
(3) (the inclination angle of the taper guide is the same).

[0016]

As described above, according to the structure of the present invention, the slider incorporated in the door is locked and held at the middle position when the outer door is open, so that the main body is locked when the door is locked. The protrusion of the hook fitting can be made shorter and shorter than that of the conventional one while securing a sufficient hook allowance with the hook fitting provided on the case side, and the outer door can be made thin correspondingly.

[Brief description of the drawings]

FIG. 1 is a configuration perspective view of a door lock mechanism according to an embodiment of the present invention.

FIGS. 2A and 2B are diagrams showing a locked state of the door in FIG. 1, wherein FIG. 2A is a diagram showing an engagement state between a pin engagement groove of a slider and a pin of a joint lever, and FIG.

FIG. 3 is a diagram showing a state at the time of a door opening operation of FIG. 1;
(A) is an engagement state diagram of a pin engagement groove of a slider and a pin of a joint lever, and (b) is an engagement state diagram of a slider and a hook fitting.

FIGS. 4A and 4B are views showing a door open state of FIG. 1, wherein FIG. 4A is a view showing an engagement state between a pin engagement groove of a slider and a pin of a joint lever, and FIG. 4B is a view showing a slider and a hook held at a middle position; Diagram showing relative position with bracket

FIG. 5 is a configuration diagram of a conventional door lock mechanism;
(A) is a front view, and (b) is a side view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body case 2 Outer door 3 Opening operation lever 5 Slider 5a Hook hole 6 Hook fitting 6a Hook groove 6b Taper guide 8 Joint lever 8a Slide pin 9 Return spring

Claims (3)

(57) [Claims] A vertically movable slider connected to an opening operation lever is incorporated in an outer door, and a hook hole with a tapered guide protruding from a front portion of a main body case is provided in a hook hole opened in a plate surface of the slider. In the door lock mechanism of a vending machine that locks the outer door to the closed position when the door is in the open position, the slider at the door open position is at an intermediate height that is shallower than the hook allowance with the hook fitting. A door lock mechanism for a vending machine, wherein a stopper means for locking and holding the door is provided. 2. The door lock mechanism according to claim 1, wherein the stopper means includes a crank type joint lever connected to a rotation shaft of the opening operation lever, and a slider opposed to a slide pin attached to a tip of the joint lever. And a return spring for urging the joint lever toward a standby position. 3. The door lock mechanism according to claim 2, wherein the pin engaging groove opened in the slider is a horizontally long groove, and is engaged with a slide pin of a joint lever at an intermediate portion of the groove in the longitudinal direction. A door lock mechanism for a vending machine, wherein a stepped portion is provided for holding the slider at that position.