JP2008108164A - Door lock device of vending machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door lock device of a vending machine capable of firmly and stably fixing a lock plate in a designated position while reducing cost. <P>SOLUTION: In the door lock device of the vending machine in which a latch, in conjunction with an opening-and-closing handle of the door, is made to engage to a lock plate 9 where a hat shape attachment plate 11, welded inside a side wall of a main body cabinet, is made as an attachment seat, an engagement arm part 9d projecting out up and down from an attachment base, a screw hole 9e for screwing a fastening screw 12, and dowel 9f for positioning are formed in the lock plate 9. A lock plate plugging hole 11c, a screw through hole 11d, and a dowel fitting hole 11e are formed in a convex wall part of the hat form adapter plate 11. After inserting the attachment base of the lock plate 9 in the plug hole 11c from the front of the main body cabinet and fitting together its engagement arm part 9d and dowel 9f inside the side wall of the attachment plate 11 and a dowel fitting hole 11e, the lock plate 9 is fastened and fixed to the hat shape attachment plate 11 by the fastening screw 12. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a door lock device of a vending machine that locks and locks a single-open outer door disposed on the front surface of a main body cabinet.

As is well known, a vending machine is provided with a door lock device for locking and locking an outer door in a main body cabinet in which a product storage rack is mounted in a warehouse, and its conventional structure is shown in FIGS. First, in FIGS. 2 and 3, 1 is a main body cabinet of the vending machine, 2 is a single-open outer door disposed on the front surface, 3 is an inner door, 4 is a product storage rack, A product display room 5, a sales operation panel 6, a product outlet 7, and a door opening / closing handle 8 are provided.
In addition, as a door lock device for the outer door 2, the front opening of the main body cabinet 1 is provided with lock plates 9 at two upper and lower positions so as to protrude forward from the right side wall, and connected to the handle 8 on the outer door 2 side. When the outer door 2 is closed, the lock plate 9 enters the slit hole 10 opened on the back surface of the outer door 2 and engages with the latch. The door 2 is locked in the closed position (see, for example, Patent Document 1).

  Here, a conventional mounting structure of the lock plate 9 disclosed in Patent Document 1 will be described with reference to FIG. As shown in the figure, a hat-shaped mounting plate 11 also serving as a reinforcing material is welded and joined to the inside of the main body cabinet side wall 1a, and the lock plate 9 is described below using the convex wall portion of the hat-shaped mounting plate 11 as a mounting seat. It is fixed like this. That is, the lock plate 9 is a robust sheet metal processed product (steel plate) having a plate thickness of about 4 mm, and an engagement groove (concave groove) 9a for latching the above-mentioned latch is provided at the front end of the lock plate 9 and the plate of the mounting base. Screw holes 9b for fastening screws are formed at two locations on the surface, and deformed engagement arm portions 9c bent in an L shape project from the upper and lower edges of the mounting base to the side. On the other hand, a screw hole (female screw) 11a of a fastening screw corresponding to the screw through hole 9b is formed on the end surface of the convex wall portion of the hat-shaped mounting plate 11, and the engagement arms of the lock plate 9 are provided at two upper and lower portions thereof. A holding hole (square hole) 11b corresponding to the portion 9c is opened.

In order to fix the lock plate 9 to the hat-shaped mounting plate 11 with the above configuration, first, the engaging arm portion 9c of the lock plate 9 is inserted into the holding hole 11b formed in the mounting plate 11, and the arm portion is attached to the mounting plate. 11, the lock plate 9 is overlaid on the head end surface of the mounting plate 11, and then the fastening screw 12 passed through the screw hole 9 b of the lock plate 9 is screwed into the screw hole of the mounting plate 11. The lock plate 9 is fastened by screwing to 11a.
Japanese Patent No. 3446868 (FIGS. 1, 2, and 4)

Incidentally, the conventional lock plate mounting structure shown in FIG. 4 has the following problems in terms of functions in addition to processing and assembly man-hours. That is,
(1) Sheet metal forming of the deformed engagement arm portion 9c on the lock plate 9 made of a thick steel plate increases the number of processing steps and increases the cost of the parts.
(2) Further, two fastening screws 12 are required to fix the lock plate 9, and the number of assembly steps increases.
(3) Moreover, the fastening screw 12 is threaded through the screw hole 9b of the lock plate 9 and screwed into the screw hole 11b tapped on the end face of the convex wall of the hat-shaped mounting plate (steel plate having a thickness of about 1 mm at most). Therefore, the fitting length of the fastening screw is short, so that a strong screw fastening force cannot be secured, and further, the metal plate of the lock plate 9, the variation in the drilling accuracy, and the fastening screwed to the mounting plate 11 Due to the backlash between the screw 12 and the screw-through hole 9b of the lock plate 9, the mounting posture of the lock plate 9 is disturbed and fixed from a predetermined mounting position. May not be able to be performed smoothly.

  The present invention has been made in view of the above points, and its object is to solve the above-mentioned problems, reduce the cost of processing by assembling the lock plate and reducing the number of assembly steps, and firmly fix the lock plate in place. Another object of the present invention is to provide a door lock device for a vending machine which is improved so as to be stably fixed.

In order to achieve the above-described object, according to the present invention, a lock plate is fixed to a lock plate as a mounting seat, which is a hat-shaped mounting plate welded to the inside of the side wall of the main body cabinet, and the outer door is opened and closed on the lock plate. In the door lock device of the vending machine adapted to engage the vertical slide type latch linked to the handle,
The locking plate is formed as a flat plate press-work product, and an engagement arm portion projecting up and down from the mounting base, and a screw hole for screwing a fastening screw on one plate surface of the mounting base are formed, and the hat-shaped mounting A lock plate insertion hole that opens toward the front of the cabinet and a screw through hole corresponding to the screw hole are formed in the convex wall portion of the plate, and an engaging base portion of the lock plate is inserted into the insertion hole. Is hooked on the inside of the convex wall portion of the hat-shaped mounting plate, and then the lock plate is screwed to the hat-shaped mounting plate (Claim 1).

  In the above configuration, the lock plate is formed by extruding and forming dowels for positioning at two positions above and below the mounting base, and a dowel fitting hole is formed on the plate surface of the hat-shaped mounting plate so as to face the dowel ( Claim 2).

According to said structure, there exist the following effects compared with the conventional structure shown in FIG.
(1) The lock plate and its engaging arm portion are formed only by punching a flat steel plate, and unlike the conventional structure, bending work is not required to form an irregular engaging arm portion, so that it can be manufactured at low cost.
(2) The number of assembling steps can be reduced by using only one fastening screw for fixing the lock plate.
(3) In addition, the engagement arm portion of the lock plate is hooked on the hat-shaped mounting plate, and the fastening screw is screwed into the screw hole formed in the thick lock plate to be fastened to the hat-shaped mounting plate. As a result, the screw tightening force can be increased and fixed firmly. Furthermore, a dowel for positioning is extruded and formed on the mounting base of the lock plate, and the dowel is fitted into a dowel fitting hole formed on the hat-shaped mounting plate during assembly and held in place. Thus, in addition to improving the assembly workability, the lock plate can be stably attached and detached from the latch provided on the outer door by stably holding the lock plate without tilting.

Embodiments of the present invention will be described below based on the examples shown in FIGS. 1 (a) and 1 (b). In addition, in the figure of an Example, the same code | symbol is attached | subjected to the member corresponding to FIG. 4, and the description is abbreviate | omitted.
That is, the lock plate 9 in the illustrated embodiment is a flat plate (steel plate having a thickness of about 4 mm), and a tab-like engagement arm portion 9d that protrudes up and down is formed on the mounting base. . Further, a screw hole (female screw) 9e for screwing the fastening screw 12 is tapped at the center (one place) on the plate surface of the mounting base, and a spherical dowel 9f is extruded and formed on the engagement arm portion 9d. ing.
On the other hand, the hat-shaped mounting plate 11 welded and joined to the inner surface of the side wall of the main body cabinet has an insertion hole (square hole) 11c into which the mounting base portion of the lock plate 9 is fitted on the side surface of the convex wall portion toward the front of the main body cabinet. In addition, a screw through hole 11d for passing the fastening screw 12 and a dowel fitting hole 11e are drilled in the end face of the convex wall portion at positions corresponding to the screw hole 9e and the dowel 9f, respectively. The insertion hole 11 c is set to a height h corresponding to the plate width d of the lock plate 9.

In the above configuration, in order to fix the lock plate 9 to the convex wall portion of the hat-shaped mounting plate 11, first, the mounting base portion of the locking plate 9 from the front side of the main body cabinet and the engaging arm portion projecting vertically from the mounting base portion. 9 d is inserted into the insertion hole 11 c opened in the mounting plate 11, and the engaging arm portion 9 d of the lock plate 9 is hooked inside the convex wall portion of the hat-shaped mounting plate 11. Further, in this state, the dowel 9f formed on the engaging arm portion 9d is fitted into the dowel fitting hole 11e of the hat-shaped mounting plate 11, and the lock plate 9 is positioned. Next, the lock plate 9 is screwed into the screw hole 9d of the lock plate 9 through one fastening screw 12 through the screw through hole 11d drilled in the end face of the convex wall portion of the hat-shaped mounting plate 11, and a sufficient tightening force is applied. Tighten and fix.
Thereby, the lock plate 9 is fastened and fixed at a predetermined position of the hat-shaped mounting plate 11. Moreover, as the fastening screw 12 is tightened, the lock plate 9 is fastened and fixed at a predetermined position by the self-alignment effect due to the fitting of the dowel 9f / dowel fitting hole 11e. Therefore, even if there is a backlash (play clearance) between the fastening screw 12 and the screw through hole 11d drilled in the hat-shaped mounting plate 11, the lock plate 9 is not tilted without being affected by this. It can be fixed stably.

BRIEF DESCRIPTION OF THE DRAWINGS It is a lock plate by the Example of this invention, and its attachment structure figure, (a) is a perspective view of an assembly state, (b) is an exploded perspective view of (a). Front view of vending machine External appearance perspective view showing the state where the outer door of FIG. 3 is opened FIG. 3 is an exploded perspective view of a conventional lock plate fixed to the main body cabinet of FIG. 3 and its mounting structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body cabinet 2 Outer door 8 Opening / closing handle 9 Lock plate 9d Engaging arm part 9e Screw hole 9f Dowel 11 Hat-type mounting plate 11c Lock plate insertion hole 11d Screw through hole 11e Dowel fitting hole 12 Fastening screw

Claims (2)

A hat-type mounting plate that is also used as a reinforcing material welded to the inside of the side wall of the main cabinet is used as a mounting seat, and a lock plate is secured here, and an up-and-down sliding latch connected to the opening / closing handle of the outer door is engaged with this lock plate. In the vending machine door lock device,
The locking plate is formed as a flat plate press-work product, and an engagement arm portion projecting up and down from the mounting base, and a screw hole for screwing a fastening screw on one plate surface of the mounting base are formed, and the hat-shaped mounting A lock plate insertion hole that opens toward the front of the cabinet and a screw through hole corresponding to the screw hole are formed in the convex wall portion of the plate, and an engaging base portion of the lock plate is inserted into the insertion hole. A door lock device for a vending machine, wherein the lock plate is screwed to the hat-shaped mounting plate after being hooked on the inside of the convex wall portion of the hat-shaped mounting plate. 2. The door locking device according to claim 1, wherein a dowel for positioning is formed by extruding the lock plate at two locations above and below the mounting base, and the dowel is fitted on the plate surface of the hat-shaped mounting plate facing the dowel. A door lock device of a vending machine characterized by forming a joint hole.

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