JPH0673940A - Simultaneous drawing preventive device for drawer in filing cabinet, etc. - Google Patents

Abstract

PURPOSE:To prevent draw out of a plurality of drawers simultaneously in a filing cabinet, etc. CONSTITUTION:Bushings 4, which have vertical slots 5 positioned in height corresponding to each drawer in internal side faces and have forward penetrating holes 6 continuing to the front edges of the vertical slots 5, in the vertical direction are fixed onto the internal side face of a box body. The bodies of revolution 9 with engaging pins 7 corresponding to each drawer and capable of being rotated relatively while being vertically moved and being directed inward and return pins 8 directed backward are fitted into the bushings 4. Guide members 24 with guide grooves 23, into which the engaging pins 7 can be fitted when each drawer is drawn out and in which front ends are formed in guide slant faces 22 opened vertically, in the longitudinal direction are mounted at the same positions of each drawer. The intervals of the penetrating holes 6 arranged vertically are equalized to the pitches of the drawers, and the intervals of the engaging pins 7 disposed vertically are made to differ from the pitches of the drawers. Each engaging pin 7 is positioned in height included in the guide slant faces 22 of the guide members 24 of the corresponding drawers.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for preventing a plurality of drawers from being simultaneously drawn out in a filing cabinet or the like.

[0002]

2. Description of the Related Art Japanese Utility Model Publication No. 60-18105 discloses a typical structure of a filing cabinet or the like for preventing the risk of falling due to the forward movement of the center of gravity when a plurality of drawers are simultaneously drawn out. ing. this is,
When one of the drawers is pulled out, the stop element that is moved up in conjunction with it moves to the front side of the protrusion in the other drawer, thereby making it impossible to pull out these drawers.

However, in such a structure, it is possible to simultaneously draw out a plurality of drawers due to its structure. That is, there are cases where a plurality of drawers are intentionally pulled out, or due to an unavoidable external force such as an earthquake, the plurality of drawers start to move simultaneously and pop out,
There is a risk of the cabinet tipping over.

As a device for eliminating such a drawback,
For example, as described in JP-A-2-241407,
For each drawer, a separate lock rod, actuating cam and actuating pin are provided, and when one drawer is pulled out, the other lock rod is restrained so that the other drawer cannot be pulled out.

[0005]

All of the conventional devices of this type have a complicated structure and their operation is not always reliable.

[0006]

According to the present invention, a vertically elongated hole located at a height corresponding to each drawer is provided on the inner side surface of a housing accommodating a plurality of vertically arranged drawers. A vertical bearing cylinder having a forward entry hole continuing to the front edge of is fixed to this bearing cylinder, corresponding to each drawer, capable of relative rotation, simultaneously moving up and down, and engaging inward. A rotating body having a return pin facing rearward is fitted, while at the same position of each drawer, the locking pin can be fitted when it is pulled out, and the front end opens vertically. By providing a guide member having a guide groove in the front-rear direction, the intervals of the entrance holes arranged vertically are made equal to the pitch of the drawers, and the intervals of the locking pins arranged vertically are made different from the pitch of the drawers. Yes, and the position of each locking pin is compatible By the height included in the inclined guide surfaces of the guide member in the drawer that, the problem is solved.

[0007]

When one drawer is pulled out, only the corresponding locking pin can enter the guide groove of the guide member in the drawer and the entry hole in the bearing cylinder. But,
The other locking pin has a height different from that of the guide groove of the guide member in the corresponding drawer and the entry hole in the bearing tube, so that the other drawer cannot be pulled out.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The drawings show an embodiment in which the present invention is applied to a filing cabinet having four drawers of the same shape and the same size arranged vertically. In the following description, "inside and outside" refers to the central vertical plane of the housing of the filing cabinet. A holding frame (1) is fixed to almost all of the inner surface of the housing of the filing cabinet (not shown).

The holding frame (1) is a flat U whose plane shape faces outward.
It is provided with a base piece (2) having a shape and mounting pieces (3) and (3) which are continuously provided at right angles in opposite directions from outer ends of the front and rear pieces. Base piece
At the center of the inner surface of (2) in the front-rear direction, a bearing tube (4) having a circular cross section that faces the up-down direction is formed.

At a height corresponding to each drawer,
The bearing tube (4) has a vertically elongated hole (5) extending from its inner surface to the rear surface at an angle slightly larger than 90 °, and at a middle portion in the height direction of each vertically elongated hole (5) from its front edge, An entrance hole (6) is formed over the front surface of the bearing tube (4) with an angle range slightly larger than °.

The dimensions and shapes of the vertically elongated hole (5) and the entrance hole (6) will be made clear later.

The bearing cylinder (4) has four cylindrical rotations, which are provided with projecting locking pins (7) and return pins (8) corresponding to the respective drawers and at the same height position. The body (9) is fitted.

The pivot (10) penetrates all the rotating bodies (9),
Moreover, retaining collars (11) and (12) that can be fitted into the bearing cylinder (4) are provided at upper and lower ends of the pivot shaft (10) projecting from the bearing cylinder (4) so that the head does not protrude. It is fastened with a pin (13).

The width of the entrance hole (6) in the vertical direction is set so that the locking pin (7) can enter, and the intervals between the entrance holes (6) and (6) arranged vertically are heavy. Equal to the drawer pitch. However, the spacing between the locking pins 7 arranged vertically is different from the pitch of the drawers.

The longitudinal width of the vertically elongated hole (5) is such that the locking pin (7) is inward at a right angle and the return pin (8) is
It is designed so that it can turn to the rear.

On the outside of the base piece (2) of the holding frame (1), the same cross section is formed, and at the outer ends of the front and rear pieces (14) and (14), engaging pieces (15) ( The receiving frame (16) in which 15) are provided in series is fitted and fixed.

The front and rear edges of the sliding piece (17) are fitted to the facing portions of the engaging pieces (15) (15) corresponding to the respective locking pins (7).

A tension spring (19) is stretched between each sliding piece (17) and an outwardly facing piece (18) projecting from each rotary cylinder (9) to form a rotary cylinder.
(9) is designed to have an over-centering action within a range of 90 ° between the position where the locking pin (7) faces inward and the position where it faces forward.

In order to move the sliding piece (17) up and down together with the locking pin (7), the outward lever (2) protruding from the rotary cylinder (9) is provided.
0) is fitted and locked in a locking hole (21) in the front-rear direction formed in the sliding piece (17).

A guide member (24) having a guide groove (23) having a front end formed as a guide slope (22) that expands vertically and a rear end closed, is fixed to a side surface of the drawer (not shown). Has been done. The guide groove (23) of the guide member (24) of each drawer,
It is level with the entrance hole (26).

When any drawer is pulled out, the guide member (2
The guide slope (22) of 4) has the locking pin (7) at the corresponding position.
Are guided into the guide groove (23). When the drawer is further pulled out, the locking pin (7) is rotated 90 ° forward by the rear end closing portion of the guide groove (23) to enter the entrance hole (6),
The return pin (8) facing backwards faces inward.

Guide member to which one locking pin (7) corresponds
When entering the guide groove (23) of (24), the other locking pin (7)
Since it has a height different from that of the corresponding entrance hole (6), another drawer cannot be opened.

When the drawer is closed, the return pin (8) facing inward is pushed by the rear surface of the guide member (24) (or the projection provided on the side surface of the drawer) for this purpose. When rotated, the locking pin (7) faces inward and enters the guide groove (23).

When the drawer is moved further rearward, the locking pin (7) remains inward.

[0025]

With a relatively simple structure, when one drawer is pulled out, all the other drawers cannot be pulled out.

[Brief description of drawings]

FIG. 1 is an inward perspective view of the device of the present invention with the housing and drawer omitted.

FIG. 2 is a perspective view of an upper portion of a holding frame as seen from the outside.

FIG. 3 is a cross-sectional view taken along the line III-III in FIG.

[Explanation of symbols]

(1) Holding frame (2) Base piece (3) Mounting piece (4) Bearing tube (5) Vertically elongated hole (6) Entry hole (7) Locking pin (8) Return pin (9) Rotating body (10) Axis (11) (12) Locking collar (13) Locking pin (14) Front and rear pieces (15) Engaging piece (16) Receiving frame (17) Sliding piece (18) Outward piece (19) Tension spring (20) Outward direction Lever (21) Locking hole (22) Guide slope (23) Guide groove (24) Guide member

Claims (1)

[Claims] 1. A frontward entrance hole which has a vertically elongated hole located at a height corresponding to each drawer on an inner side surface of a housing accommodating a plurality of vertically aligned drawers and which continues to a front edge of the vertically elongated hole. A rotary body having a vertical bearing cylinder fixed thereto, capable of relative rotation corresponding to each drawer and simultaneously moving up and down, and having a locking pin facing inward and a return pin facing rearward. On the other hand, at the same position of each drawer, when the drawer is pulled out, the locking pin can be fitted, and there is a guide groove in the front-rear direction which is a guide slope that opens the front end up and down. A guide member is provided so that the intervals of the entrance holes arranged vertically are equal to the pitch of the drawers, and the intervals of the locking pins arranged vertically are different from the pitch of the drawers. Proposed guide member for the corresponding drawer A device for preventing simultaneous withdrawal of drawers in a filing cabinet or the like, which has a height included in the inner slope.