JPH04326192A - Door lock device for automatic vending machine - Google Patents

Abstract

PURPOSE:To prevent the deterioration of a lock function due to the bending forward state of a support metal fixed to a case so as to be movable forward and backward, caused by a repeatedly operated lock operation. CONSTITUTION:A guide plate 7 whose cross section is U-shaped, is fixed to a case 1 by welding, and a support metal 4 is moved forward and backward along the inside faces of the both U-shaped leg parts. And also, at the time of fixing the support metal, the support metal is restrained by both leg parts so that it can be prevented from bending forward even when the lock operation is frequently operated.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door locking device for a vending machine, which locks a door provided on the front surface of a vending machine case in a closed state.

0002

2. Description of the Related Art A door locking device shown in FIG. 5 is known for vending machines. In the figure, 1 is a case whose front side is open, and 2 is a door that opens and closes the front side of the case 1. The door locking device 3 is composed of a receiving plate 4 provided on the case 1 and a latch 5 provided on the door 2. The receiving plate 4 has an L-shaped locking pawl 41 at the front end, and a latch 41 provided at the base end. Move it back and forth through the elongated hole 42 and insert the machine screw 43 at an appropriate position.
It is fixed to the front end of the case 1 by. On the other hand, the latch 5 has a vertically elongated strip shape and has an engagement hole 51 at a position corresponding to the locking claw 41, so that the door can be slid up and down by rotating a lever (not shown) provided on the front surface of the door 2. 2. In the door locking device 3, when the door 2 is closed, the locking pawl 41 is inserted into the engagement hole 51, and the receiver 5 slides downward by rotation of the lever, and the locking pawl 41 is engaged. The door 2 is fixed to the case 1 by being engaged with the upper edge of the hole 51.

0003

[Problems to be Solved by the Invention] However, in the conventional door lock device 3, due to the gap between the elongated hole 2 and the machine screw 3, the insufficient strength of fixing the receiver 4 with the machine screw 43, etc., the locking operation is repeated. Moreover, as shown in FIG. 6, there is a tendency for the receiver 4 to fall forward, and there is a concern that the locking function may deteriorate due to this forward downward movement.

[0004] This invention prevents the receiver from falling forward,
An object of the present invention is to provide a door locking device for a vending machine that can stably maintain a locking function.

[0005]

[Means for Solving the Problems] In order to achieve the above object, according to the present invention, as a first means, approximately L
The door has a locking claw in the shape of a letter and has a receiver that is fixed to the front end of the case so as to be movable back and forth, and an engagement hole that removably engages with the locking claw, so that the door can be slid up and down. A door locking device for a vending machine, which has a U-shaped cross section and a latch held on the inner surface of both legs of the vending machine door locking device, which fixes the door to the case by locking the locking pawl to the upper edge of the engagement hole. A guide plate along which the receiver moves is fixedly installed on the case, or as a second means, the guide plate has a substantially L-shaped locking claw at the tip and is fixed to the front end of the case so as to be movable back and forth. It consists of a receiver, and a latch that has an engagement hole that removably engages with the locking claw and is held on the door so as to be able to slide up and down, and the locking claw is engaged with the upper edge of the engagement hole. In a door lock device for a vending machine that locks the door to the case,
A pair of protrusions are provided at both upper and lower ends of the proximal end of the receiver that abuts on the case and are spaced apart from each other by an appropriate distance in the front and back, and bend and protrude toward the case. A groove is provided in the case to guide the slide of the protrusion during movement.

[0006]

[Operation] In the first means, the guide plate fixed to the case prevents the receiver from falling forward with its legs,
Also, in the second means, a pair of protrusions that engage with the grooves prevent the receiver from sliding forward, similar to the first means. Therefore, the receiver always maintains its normal posture.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 and 2 show an embodiment of the first means of the present invention, and parts common or identical to those in FIG. 5 are designated by the same reference numerals. In FIGS. 1 and 2, reference numeral 7 denotes a guide plate having a U-shaped cross section and having an appropriate length from front to back. This guide plate 7 is U-shaped, and the inner dimensions of both legs are 4.
The base end portion 45 of the base end portion 45 is formed in a size that allows the base end portion 45 to slide without loosening.
It is fixed to the receiver mounting portion 11 of the case 1 by welding.

In the above-described structure, the receiver 4 is moved back and forth along the inner surface of both legs of the guide plate 7, adjusted to an appropriate position, and fixed to the case 1 with machine screws 43. Therefore, even if there is a gap between the machine screw 43 and the elongated hole 42, or even if the locking pawl 41 is repeatedly subjected to downward force by the latch 5 during locking operation, the retainer 4 will be able to maintain its position through the base end 45. Since it is restrained by the guide plate 7, it maintains a normal posture.
Unlike before, tilting forward and downward is reliably prevented. Therefore, the door locking device 3 always maintains a sufficient locking function.

An embodiment according to the second means of the present invention is shown in FIGS. 3 and 4. In figures 3 and 4, the receiver 4
Parts of both upper and lower ends of the housing are bent toward the case side, and a pair of protrusions 46 are formed on the upper and lower sides at appropriate intervals in the front and rear. On the other hand, the receiving plate mounting portion 11 of the case 1 has the protrusion 4
A pair of grooves 12 are formed in which the groove 6 slides back and forth without loosening.

In this embodiment, a protrusion 46 that engages the groove 12
This reliably prevents the receiver 4 from tilting forward and downward, as in the previous embodiment. Therefore, the same effects as in the previous embodiment can be obtained.

[0011]

According to the present invention, the first means includes a receiver having a substantially L-shaped locking claw at its tip and fixed to the front end of the case so as to be movable back and forth; It has an engagement hole that engages removably, and a latch that is slidable up and down to be held on the door, and the door is fixed to the case by engaging the locking claw with the upper edge of the engagement hole. In a door lock device for a vending machine, a guide plate having a U-shaped cross section and on which the receiver moves along the inner surface of both legs is fixed to the case, or as a second means, the guide plate has a substantially L-shaped tip. It has a locking pawl, a receiver that is fixed to the front end of the case so as to be movable back and forth, and an engagement hole that removably engages with the locking pawl, and the door can be slid up and down. In a door locking device for a vending machine, the door is fixed to the case by locking the locking pawl to the upper edge of the engagement hole, the base of the receiver being in contact with the case. A pair of protrusions are provided at both upper and lower ends of the end portion and are spaced apart from each other by an appropriate distance in the front and back, and bend and protrude toward the case, and the grooves engage with the protrusions and guide the slide of the protrusions when the receiver is moved. is provided in the case, so even if the door locking operation is performed frequently or repeatedly, the receiver does not tilt forward and downward, and the door locking device always maintains a sufficient locking function.

[Brief explanation of drawings]

FIG. 1 is a front view of the main parts of a door locking device showing an embodiment of the first means of the invention.

[Figure 2] Side view of the main parts of the invention shown in Figure 1

[Fig. 3] A front view of the main parts of the door locking device showing an embodiment of the second means of the invention.

[Figure 4] Side view of the main parts of the invention shown in Figure 3

[Fig. 5] A schematic perspective view of a vending machine equipped with a conventional door lock device.

[Fig. 6] Explanatory diagram showing a malfunction state of a conventional door lock device

[Explanation of symbols]

1 Case 2 Door 3 Door lock device 4. Receive money 5 Latch 7 Guide plate 12 Groove 41 Locking claw 46 Protrusion 51 Engagement hole

Claims (2)

[Claims] Claim 1: A receiver having a substantially L-shaped locking pawl at its tip and fixed to the front end of the case so as to be movable back and forth, and an engagement hole that removably engages with the locking pawl. and a latch that is held on the door so as to be slidable up and down, and the locking claw is locked to the upper edge of the engagement hole to fix the door to the case. A door lock device for a vending machine, characterized in that a guide plate having a U-shape and along which the receiver moves along the inner surface of both legs is fixedly installed on the case. 2. A receiver having a substantially L-shaped locking claw at its tip and fixed to the front end of the case so as to be movable back and forth, and an engagement hole that removably engages with the locking claw. and a latch held on the door so as to be slidable up and down, the door locking device for a vending machine fixing the door to the case by locking the locking pawl to the upper edge of the engagement hole, A pair of protrusions are provided at both upper and lower ends of the proximal end of the receiver that abuts on the case and are spaced apart from each other by an appropriate distance in the front and back, and bend and protrude toward the case. A door lock device for a vending machine, characterized in that the case is provided with a groove for slidingly guiding the protrusion during movement.