JPS6118763Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a drawer interlocking prevention device that prevents the drawers of document storage cabinets, armrest desks, etc. from popping out.

Drawers for cabinets, desks, etc. that are currently on the market and in practical use have problems with product cost, and some do not have locking devices at all, or even if they do have locking devices, all drawers are not equipped with locking devices. The reality is that there isn't.

However, the cabinet body tilts due to vibrations such as earthquakes, and all the drawers pop out at once. Depending on how the drawers are used, the cabinet itself may lose its balance and fall over, causing an unexpected disaster. It is possible that

Furthermore, when the upper drawer was pulled out, the drawers on the lower tier were sometimes pulled out at the same time, which was extremely dangerous as it could cause your hand to get caught.

This idea was created in view of the above circumstances, and in cabinets and other equipment equipped with multiple drawers, the other drawers are automatically locked while the desired drawer is being pulled out. This invention attempts to provide a device for preventing interlocking of drawers.

An embodiment of this invention will be described in detail below with reference to the drawings.

1 is the cabinet body, 2, 2, ... are drawers arranged in multiple stages, and these drawers 2, 2,...
... are constructed so that they can be taken in and out along guide rails (not shown) installed on the inner surfaces of both side walls of the cabinet body 1, respectively. Reference numeral 3 indicates a locking mechanism for the drawer. This locking mechanism 3 includes a guide member 4 fixed to the inner surface of the rear plate of the cabinet 1 by spot welding or the like, and a guide member 4 that is fitted into the guide member 4 to slide vertically. a movable sliding member 5;
An operating rod 6 that restricts vertical sliding of the sliding member 5
and a support member 7 that supports the operating rod 6. The guide member 4 is made of a steel plate or hard resin and has a substantially square cross section, and has a cut groove 4a and an opening 4b formed in its front and right side parts, respectively. A sliding member 5 whose surface is bent in a crooked shape so as to close the cut groove 4a is fitted into the hollow portion so as to slide vertically within the guide member 4.

Further, on the front face portion 5a of the sliding member 5, there are provided drawers 2,
2. Hook-shaped lock claw 1 fixed to the outside of the rear plate
A lock pawl latching opening 5b is provided at a position corresponding to 0, and when the sliding member 5 is at its lowest position due to its own weight, each lock pawl 10 is attached to the latching opening 5.
The drawers 2, 2, . Further, an opening 5c is provided on the right side of the sliding portion 5 at the same height as the locking opening 5b, into which the tip of the operating rod 6 is inserted and slid into contact.

The operating rods 6 are arranged and supported vertically in the same number as the drawers by a support member 7 fixed in parallel to the right side of the guide member 4, and openings 7a provided on both sides of the support member 7, 7b horizontally, and its central portion is attached to the support member 7 with a pivot pin 8.
It is loosely pivoted through. An inclined guide surface 6b is formed on the tip end 6a of each operating rod 6, and is disposed at a position facing the opening 5c of the sliding member 5.

A spring 9 is provided with one end fixed to the support member 7 and the other end fixed near the tip of the operating rod 6 in order to always bias the tip 6a upward. On the other hand, the rear end 6c of the operating rod 6 is constantly pushed upward by an operating protrusion member 11 which is fixed in parallel with a lock pawl 10 provided on the outer surface of the rear plate of the drawer 2.

Since this invention has the above structure, when the drawer 2 at the top of the cabinet body 1 is pulled out as shown in FIG. Since the drawer 2 is not latched, it can be freely pulled out. When the drawer 2 is pulled out, the actuating protrusion member 11 is also pulled forward, and as a result, the pressing force on the actuating rod 6 is released.
The operating rod 6, whose pressing force has been released, uses the pivot pin 8 as a fulcrum by the spring 9, and moves its tip 6a.
is lifted upward and at the same time the inclined guide surface 6
b, the end face of the opening 5c of the sliding member 5 is brought into sliding contact with the sliding member 5, and the sliding member 5 is pushed upward. As the sliding member 5 moves upward, the hook portions 1 of the lock claws 10 fixed to the rear of the other drawers respectively
0a and the opening edge of the locking opening 5b of the sliding member engage with each other, so that the drawer is configured in a locked state. When the top drawer is pushed in, the actuating rod member 11 first pushes up the actuating rod 6 with its tip, so that the actuating rod 6 resists the spring 9 via the pivot pin. Its tip 6a
As a result, the sliding member 5 loses its pushing force and falls downward due to its own weight, and the locking claw 1
0 is inserted into the opening 5b, all the drawers are unlocked, and the desired drawer can then be pulled out.

As described above, this invention is a cabinet having multiple drawers, and is designed so that while one drawer is pulled out, the other drawers are locked.

Figure 4 shows another embodiment of this invention.
The same parts as in FIGS. 1 to 3 will be given the same reference numerals, and the details will be omitted to explain the different parts. Reference numeral 12 is an operating rod that is disposed to penetrate through the support member 7, and this operating rod 12 is located upwardly. It is provided with an engaging part 12b between the stopper part 12a and the actuating protrusion member 11, and is always biased to the left (in the direction of arrow A) by a spring 13, and when the drawer 2 is pushed in, the actuating protrusion 12 engages with the actuating protrusion. The tip 12c of the operating rod 12, which has been moved to the right by the member 11 against the spring 13, is now separated from the opening 5c of the sliding member 5, and the sliding member 5 falls due to its own weight and locks. The engagement with the pawl 10 is released, and the desired drawer can be pulled out. Further, when a desired drawer is pulled out, the remaining drawers are locked, similar to the previous embodiment.

As described above, according to this invention, while a desired drawer is being pulled out from among the drawers provided in multiple stages, the other drawers are automatically locked, so there is no fear of the drawers interlocking with each other. Even if the cabinet or the like were to tilt due to some circumstances, all the drawers would not suddenly pop out, and accidents could be prevented, resulting in excellent practical effects.

[Brief explanation of the drawing]

Fig. 1 is an overall perspective view showing one embodiment of this invention, Fig. 2 is an explanatory perspective view of the same locking mechanism, and Fig. 3 is a diagram showing the lock pawl and actuating protrusion member similarly attached to the rear of the drawer. Explanatory diagram showing arrangement relationship, 4th
The figure is an explanatory perspective view of a lock mechanism showing another embodiment. 1... Cabinet body, 2... Drawer, 3...
lock mechanism, 4... guide member, 5... sliding member,
6... Operating rod, 7... Support member, 8... Pivot pin, 9... Spring, 10... Lock claw, 11
...Operating protrusion member.

Claims (1)

[Scope of utility model registration request] In a cabinet equipped with multiple stages of drawers, a sliding member is fitted to the vertical inner member fixed to the inner surface of the rear plate of the cabinet body so as to be able to slide in the vertical direction, and the sliding member is fixed in parallel with the sliding member. and a horizontal operating rod of the same number as the drawers supported by the support member, and as the sliding member moves up and down, a lock attached to the outer surface of the rear plate of each of the drawers is attached to the front surface of the slide member. Each has a latching opening that engages and disengages with the pawl, and an opening that engages with the tip of each operating rod is provided on the side facing the respective actuators, and the tip of each of the operating rods is connected to this opening. A spring is provided which engages with the opening of the sliding member corresponding to the opening and urges the sliding member upward at all times, and is further attached to the outer surface of the rear plate of each drawer so that when the drawer is pushed in, A cabinet comprising: an actuating protrusion member that engages with the rear end of the actuating rod and releases the engagement between the tip end of the actuating rod and the opening against the biasing force of the spring; Drawer interlock prevention device for armchairs, etc.