JPS5813712B2 - Drawer interlock and locking device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an ink lock and a locking device for a tool cabinet or office cabinet in which a plurality of drawers are arranged in a plurality of stages or in a plurality of rows.

In a cabinet with multiple drawers like the one above,
If two or three drawers are pulled out at the same time, the weight of the drawers may cause the cabinet to tip over.

Particularly in cabinets that handle heavy objects, such as tool cabinets, there is a risk that the above-mentioned overturning may cause a serious accident that may even threaten the lives of the workers.

The present invention has been made in view of the above points. When one drawer is pulled out, all other drawers are automatically interlocked so that they cannot be pulled out, and a cylinder lock is used to ensure that all drawers are locked and unlocked at the same time. The present invention provides an interlock and locking device that can perform the following steps.

Hereinafter, embodiments of the present invention will be explained based on the drawings.

FIG. 1 is a longitudinal sectional front view showing the main parts of the ink lock and locking device according to the present invention, and FIG. 2 is a plan view thereof. The locking device 1 is installed at the rear inside of a cabinet having multiple drawers. It is being

In the locking device 1, a locking body 2 that engages with and locks an engaging portion provided on all the drawers, which will be described later, extends between all the drawers, and a pin 3 is fixed to the upper end of the locking body 2. is the horizontal plate 4 of slider A provided on the cabinet body.
It is loosely fitted into the square hole 5 of.

The slider A has, in addition to the horizontal plate 4 having a square hole 5, a vertical plate 6 having a square hole T, and is slidable in the left-right direction in FIG. 1 with respect to the cabinet. ing.

A cam 8 is rotatably fitted into the rectangular hole T of the vertical plate 6, and the cam 8 is fixed to the tip of a rod 10 of a cylinder lock 9.

Reference numeral 11 denotes a guide through which a fixed rod 12 is inserted into the slider A, and is fixed to the back surface of the cabinet to allow the slider A to slide smoothly.

Figure 3 is a plan view of the present interlock and locking device seen from a different side from Figure 2, and pin 3 of locking body 2 is connected to slider A
It is positioned at the left end 15 or the right ends 1 and 6 of the square hole 5 by a chevron-shaped plate 14 that is loosely fitted into the square hole 5 and fixed to the leaf spring 13.

The leaf spring 13 is fixed to the slider A side, and the fulcrum 17
It is always biased upward in FIG. 3 with the pin 3 at its center, and when the pin 3 moves to the right, it bends downward as shown in FIG.

The movement of the pin 3 is carried out in such a way that the pin 3 overcomes the force of the leaf spring 13 and overcomes the chevron-shaped plate 14, and the pin 3 moves on the slope of the chevron-shaped plate 14 at the left end 15 or the right end of the square hole 5 before and after the movement. 16, and positioning is regulated to prevent the above movement from occurring unexpectedly.

FIG. 4 is a plan view of the present ink lock and locking device viewed from a different side, showing the relationship between the retaining portion R, which will be described later, of each drawer and the locking body 2.

The locking body 2 having a C-shaped cross section is rotatably supported by the cabinet body S around a shaft 18, and on the other hand, an engaging portion R1, that is, a locking body that engages with the locking body 2, is provided on each drawer T1... side. A locking pawl 19 and a locking body turning hook 20 are fixed.

The locking claw 19 has a slope 21 that contacts the tip of the locking body 2 and rotates it, and the hook 20 for rotating the locking body
has a slope 22 that presses the back surface 23 of the locking body 2 to turn it in the opposite direction to the above.

The state shown in FIGS. 3 and 4 above shows a state in which all the drawers are retracted and unlocked, and in this state, the pin 3 fixed to the locking body 2 is inserted into the square hole by the chevron plate 14. 5, and the locking body 2 is located at a position away from the locking claw 19 of the engaging portion R.

When one drawer T1 is pulled out from this state downward in FIG.
The tip of the locking body 2 engages with the locking body hook pawls 19 of all the other drawers that have not yet been pulled out, and an interlock is established as shown in FIG. Ru.

At this time, the slider A does not slide, and the pin 3 fixed to the locking body 2 moves into the square hole 5 as shown in FIG. 5 as the locking body 2 rotates.
and is positioned by the chevron plate 14.

In addition, when storing the drawer T1 pulled out as described above, the hook 2.0 for rotating the locking body rotates the back of the locking body 2 into the sixth position.
After passing upward in the figure, the slope 21 of the locking claw 19 comes into contact with the tip of the locking body 2, causing it to turn as shown in Figure 4, and the interlock is released and storage is completed at the same time. .

That is, when the cylinder lock 9 is unlocked, if one drawer T1 is pulled out, all other drawers are automatically locked and cannot be pulled out. At the same time, the ink lock is released and the machine is ready for the next withdrawal operation.

Furthermore, when it is desired that all the drawers cannot be pulled out, such as when transporting the cabinet, all the drawers can be locked as follows by locking the cylinder lock 9.

That is, in the state shown in FIG. 3, that is, in a state in which all the drawers are retracted, by operating the cylinder lock 9, the cam 8 rotates counterclockwise in FIG. It also moves to the right in the figure.

Then, the pin 3 located at the left end 15 of the square hole 5 of the slider A similarly moves to the right, and the locking body 2 turns counterclockwise in FIG. 3 so that its tip locks all the drawers. It engages with the body locking pawl 19 and is locked.

This locked state is shown in Figs. γ and 8.

When unlocking the cylinder lock 9, reversely operate the cylinder lock 9 to move the slider A in FIG.
By moving the locking body 2 to the left while maintaining the clamping pressure with the locking body 4, the locking body 2 rotates and is released from engagement with the locking body locking pawl 19, thereby being unlocked.

As explained above, according to the present invention, a cam is fitted into the square hole of the slider that operates the locking body extending between all the drawers, and the rond of the cylinder lock is connected to the cam. The slider can be positioned in two positions, unlocking and locking, so when locking and unlocking all drawers at the same time using the cylinder lock, the slider moves only while the cylinder lock is being operated, and the slider moves only while the cylinder lock is being operated. When released, the slider stops at that position and does not move, ensuring that the locked and unlocked states are maintained.Also, in the unlocked state, the drawer can be pulled out without any effort, and an interlock is performed each time the drawer is pulled out. .

In addition, a spring-biased chevron plate is used as a positioning means for the pin in the square hole of the slider, and when the pin moves within the square hole, the chevron plate escapes outside the square hole, and when the pin stops, the force of the spring is applied. Since the pin is positioned and regulated between the square hole and the chevron plate under pressure, there is less wear on the chevron plate due to the movement of the pin, and the pin is securely held in two positions within the square hole. This allows the pivoting position of the locking body to be maintained accurately, thereby preventing malfunctions such as unexpected release of locks and ink locks.

Moreover, since the chevron plate is fixed to the slider and moves as one, there is no need for the pin to overcome the force of the spring and overcome the chevron plate when locking the cylinder lock, and the above locking can be done easily with a little force. It can be carried out.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional front view showing the main parts of the ink lock and locking device according to the present invention, Fig. 2 is a plan view thereof, Fig. 3 is a plan view showing the relationship between the pin and slider when unlocking, and Fig. 4 is a plan view showing the relationship between the locking body and the engaging part when the lock is unlocked, Figure 5 is a diagram showing the movement of the pin during the interlock, and Figure 6 is a diagram showing the retention of the drawer that has not been pulled out during the interlock. FIG. 7 is a diagram showing the relationship between the pin and the slider when locking, and FIG. 8 is a diagram showing the relationship between the locking body and the engaging portion when the lock is locked. 2... Locking body, 3... Pin, 4... Horizontal plate, 5... Square hole, 6... Vertical plate, 7... Square hole, 8... Cam, 9...
Cylinder lock, 10... Rod, 13... Leaf spring, 14...
...Chevron plate, 19...Claw for locking the locking body, 20...Hook for rotating the locking body, A...Slider, R...Engagement part, S...
...The cabinet body.

Claims (1)

[Claims] 1. An engaging member consisting of a pivotable locking body extending between all the drawers provided at the inner rear part of the cabinet body, a hook for rotating the locking body and a claw for locking the locking body provided on each drawer,
A slider having a horizontal plate with a square hole and a vertical plate with a square hole, the slider being fixed to the locking body and loosely fitted into the square hole of the horizontal plate. a cam rotatably fitted into the square hole of the vertical plate, a cylinder lock connected to the cam via a rond, and a cylinder lock fixed to the slider to hold the pin in two positions in the square hole. When the drawer is pulled out in the unlocked state, the locking body rotates and the locking body engages with the locking members of all other drawers. At the same time, when all the drawers are stored, the slider moves by rotating the cam through the cylinder lock, and the locking body rotates through the pin and engages with the retaining member of all the drawers. and lock all the drawers at once, and furthermore, the engaged state and non-engaged state of the engaging body with the engaging member are maintained by the chevron plate regulating the position of the locking body through the pin. A drawer interlock and locking device featuring: