JPS5927824B2 - drawer interlock device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION There are tool or office cabinets in which a plurality of drawers are arranged side by side in a plurality of stages or in a plurality of rows. The weight of the cabinet causes it to topple over.

Particularly in cabinets that handle heavy objects, such as tool cabinets, there is a risk of a serious accident that could even threaten the lives of workers if they fall.

The present invention prevents the cabinet from overturning by automatically interlocking all the other drawers when one drawer is pulled out in such a multi-drawer cabinet, and moreover, even in a narrow cabinet interior. This is an interlock device that can be installed compactly in the back of a cabinet, where there is a relatively large amount of space.

Examples will be described below based on the drawings.

In Figures 1 and 2, 1 is the cabinet body, 2-1
．． 2-2...2-N are drawers equipped in multiple stages in the cabinet body 1, 3 is a bearing fixed to the back wall inside the cabinet body 1, and a cam 4 is fixed to the upper and lower ends of the bearing 3. A vertical shaft 5 is rotatably supported, and a rotating plate-shaped locking body 6 having a generally C-shaped cross section and extending between all the drawers 2-1...2-N is fixed to the shaft 5.

Reference numerals 5a and 5b are flange portions formed by bending the distal ends of both arms of the locking body 60, respectively.

I is a leaf spring fixed to the inner wall of the cabinet body 1 and presses against the cam 4, thereby fixing the locking body 6 integral with the cam 4 at two positions: a position in FIG. 2 and a position C in FIG. 2.

Reference numeral 8 in the figure is a recess carved into the locking body 6 for escape from the bearing 3.

9-1...9-N are engaging portions protruding from each drawer 2-1...2-N.

The operation of the above embodiment will be explained in the case where the topmost drawer 2-1 in FIG. 2 is pulled out.

First a&! All the drawers are in a pushed-in state, and the engaging portions 9-1...9-N of all the drawers overlap at the same position in the vertical direction (front and back direction of the page).

When the drawer 2-1 is pulled out (in the direction of the arrow in figure b), the engaging part 9-1 moves in the same direction, and the protrusion 9a of the engaging part 9-1 moves.
pushes away the flange portion 6a at one arm end of the locking body 6 with its slope, and rotates the locking body 6 against the leaf spring 1 in the direction shown in FIG.

When the drawer 2-1 is pulled out a predetermined amount or more, the locking body 6 is fixed at the position shown in FIG. 0 by the leaf spring 7.

At this time, the engaging parts 9- of all the drawers except the drawer 2-1
Regarding 2...9-H, the other protrusion 9b of the engaging part is prevented from moving in the direction of the arrow in Fig. 6 by the flange part 6b of the other arm end of the locking body, and thereby All other drawers 2-2...2-N are interlocked so that they cannot be withdrawn.

When the drawer 2-1 is pushed back into the cabinet, the other protrusion 9b of the engaging portion 9-1 uses its slope to push away the flange portion 6b of the locking body against the spring 7, as shown in Figure d. −
When 1 is fully pushed in, it returns to the state shown in figure a.

In addition, when it is necessary to interlock all the drawers so that they cannot be pulled out, such as when transporting the cabinet, push buttons 10 and 11 are provided on the outer surface of the cabinet body 1 to penetrate from the outer surface to the inner surface. To release the interlock, push the push button 10 to move the locking body 6 as shown in Figure 0.However, to release the interlock, press the push button 11 to return the locking body 6 to the state shown in Figure A.

At this time, since the locking body 6 is a plate-shaped body that rotates around a vertical shaft 5 provided on the back wall inside the cabinet body, push buttons 10 and 11 for locking and unlocking are placed close to the left and right sides of the shaft 5. It is convenient for operation.

FIG. 3 shows another embodiment in which the cam 4 is eliminated and the leaf spring 7 is replaced with a tension spring 12, and FIG. 3 a corresponds to FIG. 2 a.
The spring 12 crosses the fulcrum, that is, the shaft 5 of the locking body 6 between the state shown in FIG. 3 and the state shown in FIG. 3 corresponding to FIG.

13 and 14 are stoppers for fixing the locking body 6.

FIG. 4 shows yet another embodiment in which the spring 12, like the spring 12 shown in FIG. interlock position and
It is fixed in the release position shown in FIG. 4a.

In this case as well, the engaging portion 9-1 is moved in the direction of the arrow (the fourth
When the locking body 6 is pulled out to the position shown in FIG.
... will be prevented from moving in the direction of the arrow (Fig. 4b).

If the engaging part 9-1 is pushed in, the other protrusion 9b of the engaging part 9-1
presses the flange portion 6b of the locking body to return it to the state shown in figure a.

As described above, in the present invention, the locking body in the release position is moved to the interlock position by pulling out one drawer, and all other drawers are locked so that they cannot be pulled out, so it is safe.

Furthermore, since the locking body provided on the drawer main body side is composed of a rotating plate having two arms, and the engaging portion on the drawer side engages with the locking body, this interlock device can be used as described above. As in the embodiment, it can be installed compactly in the back of the cabinet where there is plenty of space, but there is no need to provide a separate space for installing the interlock device, which would make the cabinet body unnecessarily large compared to the drawer. There is no.

Furthermore, since a spring is provided that biases the locking body in the direction of holding the interlock position and the release position, there is no need to worry about operating the locking body every time the drawer is pulled out.

[Brief explanation of the drawing]

Fig. 1 is a front view of an embodiment of the present invention, Fig. 2 is a sectional view taken along the line A-A in Fig. 1 showing the operation, Fig. 3 is a diagram showing the main part of the embodiment of the invention, and Fig. 4 is It is a main part block diagram of the same still other Example. 1... Drawer body, 2... Drawer, 5... Vertical axis, 6
...Locking body, 6aj6b...Flange part, 7...
Leaf spring, 9... engaging portion, 9a, 9b... protrusion, 12
...Tension spring.

Claims (1)

[Claims] 1 A locking body provided on the drawer body side and extending between all the plurality of drawers, an engaging portion provided on each drawer that approaches and separates from the locking body, and the locking body is placed in an interlock position and released. A drawer interlock device comprising a spring biased in a direction to fix the drawer in a fixed position, wherein the locking body is a rotary plate having two arms rotatable around a vertical axis. ,
The engaging portion has two protrusions that engage with the two arms of the locking body, and one of the protrusions engages with the one arm when the drawer moves in the drawing direction. The locking body is rotated to the interlock position, and the other protrusion engages with the other arm when the drawer moves in the pushing direction, thereby rotating the locking body in the releasing direction. Features a tossing drawer interlock device.