JPH0446045Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Technical field to which the idea belongs]

This invention relates to a door locking device for a cabinet equipped with double doors, which is intended for use in, for example, a vending machine cabinet.

[Prior art and its problems]

As is well known, large vending machine cabinets with wide openings are equipped with a double door that combines two left and right door panels as the front door. By the way, the closing order of the door plates of such a double door is set in advance to the first closing side and the second closing side, and among these, the closing order of the door plates on the first closing side is set as follows.
As is well known, a latch-type latch locking mechanism is provided between the door plate and the cabinet, and when closing a double door, the door plate on the closing side is first closed and the latch is locked on the latch fitting on the cabinet side. After that, the rear closing side door plate is closed and the door plates are locked together with a key. In this case, often due to a mistake in the locking operation of the door plate, if the latch lock of the door plate on the first-to-close side is incomplete and the second-to-close side door plate is closed and the space between the door plates is locked, the door may appear to be locked. Even if it appears to be locked, the door can actually be opened easily by pulling it toward you. Therefore, if you leave it in this incompletely locked state, not only will the lock not be able to perform its anti-theft function. In vending machines that sell cold products, cold air leaks inside the container.

[Purpose of invention]

This idea was developed in consideration of the above points, and it solves the problem of lock management caused by operational errors when closing the door, and is designed to prevent mistakes in locking the door board when closing the door. The purpose is to provide a locking device.

[Summary of the invention] In order to achieve the above object, this invention is designed to prevent the locking of the door plate from being incomplete by interlocking with the movement of the latch piece attached to the door plate on the first closing side. In this case, an interlock mechanism is provided to prevent locking errors by protruding laterally from the door plate and preventing the rear closing side door plate from closing. It is possible to prevent a lock mistake in which the side door plates are closed and the door plates are locked between each other.

[Example of idea]

Figures 1 to 5 show examples of this invention targeted at vending machines.
Figures 5 and 5 show the overall configuration of the cabinet equipped with double doors. In the figure, 1 is the cabinet of the vending machine, 2 and 3 are double door plates installed on the front of the cabinet 1, and on the front side of the door plate are an illumination plate 4, a product outlet 5, a coin mechanism,
Electrical components such as product selection buttons are provided. Here, among the door plates 2 and 3, the door plate 2 is the door plate on the first closing side, and the door plate 3 is the door plate on the rear closing side. When closing the door, close it first in the order of the arrows shown in Fig. 5. Close the side door plate 2 and lock the locking device of the door plate to the cabinet 1.
Then, the rear closing side door plate 3 is closed and the space between the door plates 2 and 3 is locked. Next, the mechanism of the door lock device installed on the door plate 2 on the first closing side will be explained with reference to FIGS. 1 to 3. First, as shown in FIG. 3, a latch type locking mechanism similar to the conventional mechanism is provided between the upper and lower ends of the door plate 2 and the cabinet 1. This latch type locking mechanism is guided and supported by a guide plate 2a on the door plate side so that it protrudes from the upper and lower end surfaces of the door plate under the bias of a tension spring 6 at the upper and lower ends of the back side of the door plate 2. It consists of vertically sliding latch pieces 7, 8, and latch metal fittings 9, 10 provided on the upper and lower parts of the front edge of the cabinet 1 opposite to the latch pieces 7, 8,
When the door plate 2 is closed, the latch pieces 7 and 8 fit into the latch grooves of the latch fittings 9 and 10, respectively, so that the door plate 2 is latched and locked in the closed position. Here, the latch piece 7 indicated by a solid line in the diagram of FIG. By pushing in the direction of arrow P, the latch piece 7 slides in the direction of arrow Q under the bias of the spring 6, and is fitted into the latch fitting 9 on the cabinet side to be in a completely locked state. On the other hand, the previously closed side door plate 2 is shown in FIGS. 4 and 5.
As shown in the figure, an interlock mechanism 11 for preventing locking errors according to this invention is additionally installed at a vertically intermediate position on the side edge facing the rear closing side door plate 3. The detailed structure of the mechanism is as shown in FIGS. 1 and 2. The pin 14 is supported between brackets 12 and 13 attached to the side edge of the door plate 2, and the tip is attached to the door plate. Two rotary levers 15, 16 are pivotally supported so as to project laterally from the side edges of the levers 15, 16, and the levers 15, 16 are connected via connecting rods 17, 18, respectively, as shown in FIG. It is connected to the latch pieces 7 and 8 mentioned earlier. Here, the lever 15 is linked to the sliding movement of the upper latch piece 7, and when the latch piece 7 slides so as to protrude upward from the upper end of the door plate 2, the lever 15 is moved through the connecting rod 17 to close the door. When the door plate 2 is retracted backward from the side edge of the plate 2, as shown by the solid line in FIG. When the lever 15 is not fitted into the groove, the lever 15 is connected so that its tip protrudes laterally from the side edge of the door plate 2. On the other hand, the lever 16 is interlocked with the lower latch piece 8, and like the lever 7, the latch piece 8
Lever 1 only if the latch lock is incomplete.
6 protrudes from the side edge of the door plate 2, and the other parts are connected so as to retreat from the protruding position in conjunction with the protruding movement of the latch piece 8 due to spring bias. In addition, in FIGS. 1 and 2, when the door plate 2 on the first closing side is closed as shown in FIG. Each lever 15, 16 of the interlock mechanism 11 when the latch piece 8 is in a completely locked state
shows the operating position. With the above configuration, if the locking of the upper latch piece 7 is incomplete due to an operational error when closing the door plate 2 on the first closing side, in this case, as described in FIG. Since the upper latch piece 7 does not fit into the latch groove of the latch fitting 9 on the cabinet side, it is below the normal locking position, so the connecting rod 17 is lowered and the lever 15 locks its tip into the door. It comes to protrude laterally from the side edge of the plate 2. Therefore, in this state, the rear closing side door plate 3
Even if the user tries to close the door, the lever 15 becomes an obstacle and the door plate 3 cannot be closed to a predetermined closing position. At this point, the operator notices that the latching and locking state of the door plate 2 on the first closing side is incomplete, and if he pushes the door plate 2 again and locks the latch piece 7 to the latch fitting 9, this operation process will be completed. In conjunction with the movement of the latch piece 7, the lever 15 retreats inward from the side edge of the door plate 2. Therefore, the rear-closing side door plate 3 can be closed in its normal position without any hindrance, and it can be reliably locked with the door plate 2. Furthermore, the operation of the lever 16 is the same as that of the lever 15 in front, and if the latch piece 8 is not fully locked, the lever 1
5 protrudes from the side edge of the door plate 2 toward the door plate 3 side,
To prevent the rear closing side door plate 3 from closing. When opening the door, first open the back-close side door plate 3 after removing the lock, then put your hands on the levers 15 and 16 and rotate them to pull them out to the side. Each latch piece 7 of plate 2,
8 and the latch fittings 9 and 10 on the cabinet side are unlocked, and the door plate 2 can be opened.

[Effect of the idea]

As described above, according to this invention, the latch piece attached to the door plate is linked to the movement of the latch piece attached to the door plate on the closing side, and if the latch piece of the door plate is not fully latched, the door plate is locked. By providing an interlock mechanism to prevent locking errors that protrudes further to the side and prevents the rear closing side door plate from closing, it is possible to close the rear closing side door plate while the latch lock of the first closing side door plate is incomplete. It is possible to prevent a situation where the door is locked, thereby improving the reliability of cabinet door lock management.

[Brief explanation of drawings]

1 to 5 show the structure of a door lock device according to an embodiment of this invention.
Figure 2 is a front view and cross-sectional view showing the detailed structure of the main parts, Figure 3 is a mechanical diagram of the upper and lower ends of the door plate, Figures 4 and 5 are the opening of the vending machine cabinet door. FIG. 4 is a front view and a plan view showing the state. In each figure, 1...cabinet, 2...early closing side door plate, 3...rear closing side door plate, 6...biasing spring, 7, 8...latch piece, 9, 10...latch metal fitting, 11... Interlock mechanism, 15, 16...
Rotary lever, 17, 18... articulating rod.

Claims (1)

[Scope of Claim for Utility Model Registration] A door locking device for a double door opening/closing door consisting of a combination of two left and right door plates arranged on the front of a cabinet, the top and bottom of which are the first to close. A sliding latch piece is provided at the end that protrudes vertically under spring bias, and when the door plate is in the closed position, the latch piece is fitted into the hook groove of the latch fitting on the cabinet body side, and the door plate is closed. connected to the latch piece via a connecting rod,
It is a rotary lever attached to the door plate so that the tip moves in and out from the side of the door plate in conjunction with the vertical sliding movement of the latch piece. Also, when the latch piece is not fitted into the latch groove, the tip of the rotary lever protrudes laterally from the door plate to prevent the rear closing side door plate from closing. A cabinet door lock device characterized by: