JPH1079080A - Inner door lock device for vending machines - Google Patents

Abstract

(57) [Object] To provide an easy-to-operate inner door lock device that can be locked and released simply by manually rotating a lock lever of a lock device. As an inner door lock device for locking a single-opening inner door provided on a front surface of a main body case of a vending machine at a closed position,
A manually operated crank-type lock lever 8 is slidably inserted into and supported by a bearing portion 7a of a lever mounting member 7 provided at an end of the inner door 4 opposite to the hinge, and a tip of a shaft portion of the lock lever. Into the locking square hole 2a opened on the front edge side of the main body case 2 to lock the inner door 4 in the closed position.
The L-shaped lever guide groove 7c is opened, and the handle 8b of the lock lever is drawn forward through the guide groove, and the lock lever is rotated to the locked and released position according to the shape of the lever guide groove by rotating the lock lever. Force guidance.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an inner door locking device for a vending machine.

[0002]

2. Description of the Related Art In a vending machine for selling hot or cold products, as shown in FIG. 4, an outer door 3 having a sales operation section and a product outlet on the front of a main body case 2 on which a product storage rack 1 is mounted. Separately from the above, a heat insulating inner door 4 for closing the inside of the refrigerator in a closed state is provided to enhance heat insulating properties, and the inner door 4 is provided with a door lock device 5 which is manually operated.

FIGS. 5 (a) to 5 (c) show actual results in Japanese Utility Model Laid-Open No. 64-27369.
FIG. 1 is a conventional configuration diagram of an inner door lock device proposed in Japanese Patent No. FIG. 5 shows a state where the inner door 4 is locked at the closed position. Here, the lock device 5 includes a lever mounting bracket 7 fixed to an end of the inner door 4 opposite to the hinge with a bolt 6;
A manually operated crank type lock lever 8 which is inserted and supported in a bearing portion 7a formed on the metal fitting 7 so as to be slidable left and right.
And a lock plate 9 with a square hole attached to the front edge side of the main body case so as to face the distal end of the shaft portion of the lock lever 8.
Here, the lock lever 8 is formed with a shaft portion 8a having a tip bent in a crank shape and a handle portion 8b extending substantially in an L shape from the other end of the shaft portion. The fitting 7 is inserted into the bearing 7a and supported so as to rotate and slide. Reference numeral 10 denotes a gasket attached to the inner peripheral edge of the inner door 4.

With this configuration, in the locked state shown in the figure, the tip of the shaft of the lock lever 8 enters the square hole 9a of the lock plate 9 from the side and abuts the front edge of the square hole. It is pressed against the front edge of the inner box of the case 2 to seal the inside of the storage. Further, a stopper 7b formed upright at the left end of the mounting bracket 7 restrains the lock lever 8 at the locked position. On the other hand, in order to release the lock device 5 from this locked state and open the inner door, first, the grip portion 8 of the lock lever 8 must be opened.
After the user puts his hand on b and rotates it upward as indicated by the arrow, the user slides in the direction of the arrow to pull out the tip of the shaft from the lock plate 9. When the handle portion 8b is pulled toward the user, the inner door 4 opens. In order to lock the inner door 4 in the closed position, the inner door 4 is closed in a procedure reverse to the release operation described above, and then the lock lever 8 is slid to the right to lock the end of the shaft portion with the lock plate 9. Then, the handle portion 8b is rotated to be pulled down and locked in the state shown in the figure.

[0005]

By the way, the above-mentioned conventional inner door lock device has the following problems in operability and function. That is, 1) To lock and release the lock lever 8 by manual operation, a two-stage operation procedure of rotating and sliding after holding the handle 8b of the lock lever is necessary. When the door 4 is locked to the closed position, the inner door cannot be locked unless this operation is performed.

[0006] 2) The inner door of the vending machine is quite heavy, and if the hinge is rattled in the assembled state in which the inner door is hinged to the main body case in a single-opening manner, the inner door will be under its own weight. In the case of an inner door having a slight inclination, particularly with a wide frontage, the mounting end of the locking device opposite to the hinge side is lowered. When the weight W of the inner door 4 is applied at the lock position shown in FIG. 5, the lock lever 8 rotates counterclockwise about the contact point with the lock plate 9 as a fulcrum. The lock may be loosened. Moreover, the conventional inner door lock device 5 shown in FIG. 5 does not have the function of regulating the inclination of the inner door 5 due to the play on the hinge side as described above. The gasket 10 does not properly adhere to the main body case 2 and adversely affects the airtightness in the refrigerator.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and a first object of the present invention is to easily lock and release an inner door by simply rotating a lock lever. The second object is to provide an inner door lock device having a lower support function to prevent the inner device from tilting due to its own weight in a state where the inner door is locked in a closed position. To provide.

[0008]

According to the present invention, in order to achieve the above-mentioned first and second objects, an inner door lock device is constituted as follows. 1) Solution to achieve the first object: A crank-type lock lever is slidably inserted and supported in a bearing portion of a lever mounting bracket provided at an end of an inner door so that the shaft end of the lock lever can be slid to the left and right. An inner door locking device for inserting into an engaging portion formed on a front edge side portion of a main body case to lock an inner door to a closed position, wherein a substantially J-shaped lever is provided on a plate surface of a bulging step formed on the mounting bracket. The guide groove is opened, and the handle portion of the lock lever is drawn forward through the guide groove, and the lock lever is guided to the locked and released position along the guide groove by rotating the lock lever.

In order to lock and release the lock device with such a configuration, simply hold the handle of the lock lever and rotate the lock lever, and the lock lever slides left and right following the guide groove of the mounting bracket. The tip of the shaft portion enters and exits the locking portion on the body case side. Therefore, there is no need to perform a two-step operation procedure of intentionally sliding the lock lever, and the locking and releasing operations can be performed simply and reliably by that much.

2) A solution for achieving the second object: a manually operated crank-type lock lever is slidably inserted and supported in a bearing portion of a lever mounting bracket provided at an end of the inner door so as to be slidable left and right. A lock plate with a locking hole for locking the lock lever in the locked position is provided on the front edge side of the main body case facing the tip of the shaft of the lock lever, and the tip of the shaft of the lock lever is locked by the lock plate. An inner door lock device for inserting the inner door into a hole to lock the inner door to a closed position, wherein a lever support is provided on the inner peripheral edge side of the locking hole of the lock plate so as to abut against the tip of the shaft portion of the lock lever at the locking position to support the lower end. A lever and a lever engaging means for engaging with the tip of the shaft of the lever and holding the lever in the locked position are provided, wherein the tip of the shaft of the lever is provided on the support seat of the lock plate. Forming engagement slits to fit There may be constructed in a form such as to form an engagement protrusion each other takes the shaft tip of the lever to the lock plate.

With the above arrangement, when the lock lever of the lock device is moved to the locked position with the inner door closed, the tip of the shaft of the lock lever comes into contact with the upper surface of the lever support seat provided on the lock plate. At this position, the tip of the shaft portion is engaged with the slit or the engagement projection, and is held at the locked position. Therefore, with the play of the hinge fitting,
To prevent the lock lever from rotating and coming out of the locked position due to the inclination of the inner door due to the weight of the door and the inclination of the inner door, and to maintain a stable airtightness between the inner door and the main body case. Can be.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. In the drawings of each embodiment, the same members corresponding to FIG. 5 are denoted by the same reference numerals. Embodiment 1 FIGS. 1A to 1D show an embodiment corresponding to claim 1 of the present invention. In this example,
A lever guide having a U-shaped cross section formed on the left side of a bearing portion 7a thereof has a substantially J-shaped configuration with respect to a lever mounting bracket 7 which rotatably supports a crank-shaped lock lever 8. The groove 7c is open, and the upper end of the guide groove extends to the side surface of the bulging portion. And the mounting bracket 7
Shaft part 8a of the lock lever 8 which is inserted and supported on the bearing part 7a
The handle 8b extending in an L-shape from the guide groove 7c
Projecting forward through. Further, in the illustrated example, a square hole 2a as an engaging portion into which the lock lever is inserted is opened at the front edge side of the main body case 2 so as to face the tip of the shaft portion of the lock lever 8. Instead of opening the square hole 2a on the front edge side of the main body case 2, a lock plate with a square hole as another component can be attached as shown in FIG.

With this configuration, when the inner door 4 is locked as shown in FIGS. 1 (a) and 1 (b), the distal end of the shaft of the lock lever 8 is inserted into the square hole 2a opened in the main body case 2 and the lock is performed. The arm portion of the handle portion 8b of the lever is fitted in a guide groove 7c formed in the lever mounting member 7, and is restrained and held at this locked position. On the other hand, when the lock of the lock device 5 is released and the inner door 4 is opened,
b) Rotate the hand so that it can be put down and put down.
As a result, as shown in FIGS. 1 (c) and (d),
Is forcibly guided and regulated along a J-shaped guide groove 7c opened in the mounting bracket 7, and the lock lever 8
Slides to the left and comes out of the square hole 2a of the main body case 2. Therefore, the inner door 4 can be opened by pulling the handle 8b of the lever forward.

Embodiment 2 FIGS. 2A and 2B show an embodiment corresponding to the second and third aspects of the present invention. In this embodiment, the basic structure of the lock device 5 is the same as that of the conventional structure shown in FIG. 5, but the tip of the shaft portion of the lock lever 8 which becomes crank-shaped is bent downward in a hook shape. On the lower side of the inner periphery of the square hole 9a serving as a locking hole opened in the lock plate 9 opposite thereto, the end of the shaft of the lock lever 6 is brought into contact with the tip of the lock lever 6 at the locked position shown in FIG. An L-shaped piece of a lever support seat 9b, which is supported from below, is cut and raised, and an engagement slit 9c into which the tip of the shaft of the lock lever 8 fits is formed on the plate surface of the lever support seat 9b. I'm missing.

With this configuration, in the locked state, as shown in FIG. 2A, at the position where the tip of the shaft of the lock lever 8 is inserted into the square hole 9a of the lock plate 9 and before the inner periphery of the square hole 9a. The inner door 4 is locked at the closed position by abutting on two places, the edge and the lower edge. The lever support seat 9b of the lock plate 9 abutting on the tip of the shaft portion of the lock lever 8 supports the lock lever 8 downward, and the inner door 4 is rattled by the hinge fitting via the lock lever 8, and the weight of the door is reduced. In addition to preventing the lock lever 8 from tilting downward from a predetermined position, the engagement slit 9c prevents the lock lever 8 from rotating in the release direction under the own weight of the inner door 4 at the locked position.

Therefore, even if the inner door 4 has some backlash on the hinge side, the door plate hardly tilts, so that the gasket (see FIG. 5) can be properly adhered to the front edge of the inner box of the main body case 2. Thus, the airtightness in the refrigerator can be maintained stably. [Embodiment 3] FIGS. 3 (a) and 3 (b) show an embodiment corresponding to claim 4 of the present invention as a modification of the embodiment 2 described above. 9, a lever support seat 9 for supporting the tip of the shaft of the lock lever 8.
b, and an engagement protrusion 9d as a lever engagement means are formed on the inner peripheral front edge of the square hole 9a as shown in the figure.

With this configuration, in a state where the inner door 4 is closed and the lock device 5 is locked, (a) as shown in the figure, the tip of the shaft of the lock lever 8 rests on the lever support seat 9b described above. In addition to being supported below, the engagement projection 9d restrains the lock lever 8 to the locked position, and prevents the inner door 4 from rotating in the release direction of the lock lever 8 by its own weight.

[0018]

As described above, according to the structure of the present invention, the following effects can be obtained. 1) According to the configuration of claim 1 of the present invention, when the lock device is manually locked and released to open and close the inner door, simply operate the handle in the rotational direction by simply putting a hand on the handle of the lock lever. With this operation, the lock lever is forcibly slid and guided to the locked and released position along the substantially J-shaped lever guide groove formed in the mounting bracket. Therefore, the lock device can be switched between the locked state and the released state by a simple operation without the necessity of a two-step procedure operation of intentionally rotating and sliding the lock lever.

2) According to the second to fourth aspects of the present invention, when the lock device is in the locked position, the lock lever attached to the inner door is supported by the lever support seat of the lock plate provided on the main body case side. At the same time, the lock lever is prevented from rotating in the release direction, and the inner door can be held in the correct position in the closed position, whereby the inner door hinge rattles, the inner door tilts due to its own weight, etc. This prevents airtightness and heat insulation between the inner door and the main body case, thereby stably maintaining the same.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an inner door lock device corresponding to a first embodiment of the present invention, wherein (a) and (b) are a side view and a front view, respectively, showing a locked state of the inner door, and (c). , (d) are side and front views respectively showing the released state

FIG. 2 is a configuration diagram of an inner door locking device corresponding to a second embodiment of the present invention, wherein (a) is a side view showing a locked state of the inner door,
(b) is a perspective view of the lock device.

FIG. 3 is a configuration diagram of an inner door locking device corresponding to a third embodiment of the present invention, wherein (a) is a side view showing a locked state of the inner door,
(b) is a perspective view of the lock plate in (a).

FIG. 4 is a perspective view showing a vending machine to which the present invention is applied, showing a door open state;

FIG. 5 is a configuration diagram of a conventional inner door lock device;
(a) is top view, (b) is side view, (c) is front view

[Explanation of symbols]

 2 Body case 4 Inner door 5 Locking device 7 Lever mounting bracket 7a Bearing 7c Lever guide groove 8 Lock lever 8a Shaft 8b Handle 9 Lock plate 9a Square hole (locking hole) 9b Lever support seat 9c Engagement slit 9d Joint projection

Claims (4)

[Claims] 1. An inner door lock device for locking an inner door provided on a front surface of a main body case of a vending machine at a closed position, wherein a bearing of a lever mounting bracket provided at an end of the inner door opposite to a hinge. Insert and support a manually operated crank-type lock lever slidably to the left and right, and insert the tip of the shaft of the lock lever into the locking portion formed on the front edge side of the main body case to close the inner door to the closed position In the locking device, a substantially J-shaped lever guide groove is opened in the plate surface of the bulging step formed in the mounting bracket, and a handle portion of the lock lever is pulled forward through the guide groove to thereby lock the lock lever. An inner door lock device for a vending machine, wherein a lock lever is guided to a locked and released position along the guide groove by a rotation operation. 2. An inner door lock device for locking an inner door provided on a front surface of a main body case of a vending machine to a closed position, wherein a bearing of a lever mounting bracket provided at an end of the inner door opposite to a hinge. A manually operated crank-type lock lever is slidably inserted and supported to the left and right sides of the main body case, and the lock lever is locked to the locked position on the front edge side of the main body case facing the tip of the shaft portion of the lock lever. A lock plate with a lock hole is provided, and the tip of the shaft portion of the lock lever is inserted into the lock hole of the lock plate to lock the inner door in the closed position, on the inner peripheral side of the lock hole of the lock plate. And a lever support seat for abutting against and supporting the shaft end of the lock lever in the locked position, and lever locking means for engaging with the shaft end of the lever to hold the lock lever in the locked position. A vending machine inner door lock device. 3. The inner door lock device according to claim 2, wherein
An inner door lock device for a vending machine, characterized in that an engagement slit is formed in the support seat of the lock plate, as an engagement means, as a lever locking means. 4. The inner door lock device according to claim 2, wherein
An inner door lock device for a vending machine, characterized in that an engagement protrusion engaging with a tip of a shaft portion of a lever is formed on an inner peripheral side of a square hole of a lock plate as lever locking means.