JPH0317046Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a telescoping shelf that can be easily installed between opposing walls.

[Conventional technology]

Conventionally, as this type of retractable shelf,
As described in Publication No. 155713, by inserting a main frame and an auxiliary frame in which a plurality of shelf rods are arranged side by side into each other so as to be able to move in and out, the entire length can be freely expanded and contracted. It has been proposed to generate a spring force between the main frame and the auxiliary frame by holding the inserted spring with a lock mechanism.

[The problem that the idea aims to solve]

In the case of the above-mentioned shelf, only one spring is installed in the center of the shelf rod, so the pressure force against the wall is small, and it is difficult to apply pressure when the distance between the opposing walls is long or when the loaded weight is large. The shelves are prone to falling. In particular, the unbalanced weight of the objects placed on the shelf tends to cause a moment of rotation about the shelf's longitudinal axis to be applied to the shelf, so the shelf rods at both ends need to be the most strongly pressed against the wall surface. On the other hand, the above-mentioned shelf is only crimped at the center with a spring, so it cannot support the moment in the rotational direction. In addition, since the main frame and the auxiliary frame are connected in the width direction through connecting members, if there is a step in the front and back direction on one wall to which the shelf is attached, the end of the shelf will be flush with the wall. There was a problem that only a portion could be crimped, and the supporting force was insufficient, making it impossible to place objects.

Therefore, the purpose of the present invention is to provide a retractable shelf that solves the above-mentioned problems.

[Means for Solving the Problems] In order to achieve the above object, the telescoping shelf of the present invention has two telescoping tubes A arranged in parallel and a lattice-like structure using a plurality of linear or rod-like members. and a shelf member 12 formed in the outer cylinder 1.
, an inner cylinder 2 whose one end side is slidably inserted into the inside of the outer cylinder 1, and an inner cylinder 2 which is inserted into the inside of the outer cylinder 1 and the inner cylinder 2, and whose one end is inserted into the center of the outer cylinder 1 in a diametrical direction. A coil spring 3 fixed to an installed fixed shaft 4
an engaging piece 2a that is provided at one end of the inner cylinder 2 inserted into the outer cylinder 1 and engages along the spiral of the coil spring 3; a screw shaft 7 inserted and prevented from coming off;
An adjustment nut member 11 that is screwed onto the screw shaft 7 to adjust the protrusion length of the screw shaft 7 from the outer cylinder 1, and elastic members 5 and 9 attached to the tip of the screw shaft 7 and the tip of the inner cylinder 2. The shelf member 12 is fixed across the outer cylinder 1 of the telescopic tube A.

〔Example〕

FIG. 1 shows an example of a telescoping shelf according to the present invention, in which two telescoping pipes A are arranged in parallel, and both telescoping pipes A
A lattice-shaped shelf member 12 is spanned between the outer cylinders 1 and connected and fixed, and in this embodiment, the shelf member 12
is made of metal wire.

Figure 2 shows the structure of the telescopic tube A, where 1 is the outer cylinder, 2
is an inner cylinder, and the left end of the inner cylinder 2 is slidably inserted into the outer cylinder 1. 3 is outer cylinder 1 and inner cylinder 2
A coil spring is inserted into the inside of the outer cylinder 1, and one end 3a of the coil spring is fixed to a fixed shaft 4 installed in the center of the outer cylinder 1 in the diametrical direction. At the tip of the left end of the inner cylinder 2 inserted into the outer cylinder 1, there is an engaging piece 2 inside.
The engaging piece 2a is bent so that it can slide along the spiral of the coil spring 3. Therefore, when the inner cylinder 2 is rotated relative to the outer cylinder 1, the inner cylinder 2 moves in and out of the outer cylinder 1, and the total length L
can be changed freely. Moreover, when the inner cylinder 2 is pressed against the outer cylinder 1, the part of the coil spring 3 that contacts the engagement piece 2a and the part up to the fixed shaft 4 are elastically deformed, and the repulsive force of this part causes the part to be pressed against the wall surface. be able to. A suction cup-shaped elastic member 5 made of rubber or the like is fitted to the right end of the inner cylinder 2 to prevent damage to the wall surface.

A sleeve 6 is fitted and fixed to the left end of the outer cylinder 1, and a screw shaft 7 is inserted into the center hole 6a of the sleeve 6.
is slidably inserted therethrough, and the screw shaft 7 is prevented from coming off from the sleeve 6 by a stopper 8 fixed to the right end thereof. An elastic member 9 similar to the elastic member 5 is fixed to the head 7a of the screw shaft 7 that projects outside. Note that 10 is a sleeve that fills the gap between the screw shaft 7 and the elastic member 9. A wing nut 11, which is an example of an adjustment nut member, is screwed into the center of the screw shaft 7.
By turning 1, the protrusion length l of the screw shaft 7 from the outer cylinder 1 can be adjusted.

Here, a method for attaching the above-mentioned telescoping shelf between opposing wall surfaces will be explained.

First, the inner cylinder 2 is rotated to protrude from the outer cylinder 1, and the total length L of the telescopic tubes A on both sides is made longer than the distance between the walls. When the outer cylinder 1 and the inner cylinder 2 are pressed in opposite directions, the portion of the coil spring 3 located between the engaging piece 2a and the fixed shaft 4 is compressed, so the total length L of the telescopic tube A is reduced. In this state, if the telescoping tube A is positioned at a desired position and the pressing force is released, the telescoping shelf will be installed in a stretched state between the walls.

On the other hand, when a person with weak physical strength, such as a woman, installs the shelf, the amount of compression of the telescopic tube A is small, so that the supporting force against the wall surface is insufficient. In this case, by turning the wing nut 11 screwed onto the screw shaft 7, the protrusion length l of the screw shaft 7 from the outer cylinder 1 can be increased, and the pressing force against the wall surface can be increased. At this time, since the force required to turn the wing nut 11 is small, even women and girls can easily increase the pressing force against the wall surface. In particular, the screw shaft 7 is
It is provided at the outer end of the outer cylinder 1 rather than on the side,
The outer cylinder 1 is connected and fixed by the shelf member 12, so when the wing nut 11 is turned, the outer cylinder 1 or the inner cylinder 2
do not rotate together, and the spring force of the coil spring 3 does not become loose.

In addition, even if the weight of the placed object is unbalanced and a moment is exerted on the shelf in the direction of rotation about its longitudinal axis, the telescopic tubes A provided at both ends firmly press against the wall surface. Therefore, the moment in the rotational direction can be supported.

Furthermore, in the present invention, the two outer cylinders 1 are the shelf members 1.
2, the two inner cylinders 2 can be moved in and out separately, so even if there is a step in the front-rear direction on the wall surface on the inner cylinder 2 side, installation is easy. That is, the length of the inner cylinder 2 on both sides protruding from the outer cylinder 1 can be adjusted separately by the spiral of the coil spring 3.

In addition, in the present invention, one end of the coil spring 3 is fixed to a fixed shaft 4 fixed to the center of the outer cylinder 1, so the coil spring 3 and the inner cylinder 2 have a length about half that of the outer cylinder 1. This has the effect of reducing weight and cost.

Although the wing nut 11 is used as the adjustment nut member in the above embodiment, the present invention is not limited to this, and a cap-shaped nut 13 rotatably attached to the left end of the outer cylinder 1 may be used as shown in FIG. . In this case, since the nut 13 is attached to the outer cylinder 1, there is an advantage that the screw shaft 7 does not wobble and the nut 13 is easy to turn.

[Effect of idea]

As is clear from the above explanation, the present invention adjusts the entire length of the telescopic tube on both sides by mutually rotating the inner tube and the outer tube, and installs it on the opposing wall using the repulsive force of the coil spring. Since the repulsive force of the coil spring is increased by rotating the member, even a person with weak physical strength can easily and strongly attach the shelf to a wall surface, regardless of the total length of the shelf. In particular, even if there is a moment of rotation about the shelf's longitudinal axis due to an imbalance in the weight of the placed object, the telescopic tubes A provided at both ends firmly press against the wall surface. Therefore, it can support the moment in the rotational direction and prevent objects from falling.

In addition, the inner cylinders on both sides can be moved in and out of the outer cylinder separately, so even if there is a step on the wall on the inner cylinder side,
It can be installed reliably without reducing the supporting capacity.

Furthermore, since a screw shaft for increasing the repulsive force of the coil spring is provided at the outer end of the outer cylinder that is connected and fixed by the shelf member, when the adjustment nut member is turned, the outer cylinder and the adjustment nut member are connected. do not rotate together, and the spring force of the coil spring does not loosen.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an example of a telescoping shelf according to the present invention, FIG. 2 is a sectional view of a telescoping tube, and FIG. 3 is a partial sectional view of another embodiment. A... Telescopic pipe, 1... Outer cylinder, 2... Inner cylinder, 2a
...Engaging piece, 3...Coil spring, 4...Fixed shaft, 5, 9...Elastic member, 7...Screw shaft, 8...
...Stopper, 11, 13... Wing nut (adjusting nut member), 12... Shelf member (wire rod).

Claims (1)

[Claims for Utility Model Registration] Consisting of two telescoping pipes A arranged in parallel and a shelf member 12 formed in a lattice shape with a plurality of linear or rod-shaped members, the telescoping pipe A is: an outer cylinder 1; an inner cylinder 2 whose one end is slidably inserted into the outer cylinder 1; and an inner cylinder 2 which is inserted into the outer cylinder 1 and the inner cylinder 2, and whose one end is inserted into the outer cylinder 1.
A coil spring 3 is fixed to a fixed shaft 4 installed in the diametrical direction in the center of the coil spring 3, and a coil spring 3 is provided at one end of the inner cylinder 2 inserted into the outer cylinder 1 and engaged along the spiral of the coil spring 3. A mating engagement piece 2a, a screw shaft 7 that is slidably inserted into the outer end of the outer cylinder 1 and prevented from coming off, and a screw shaft 7 that is screwed onto the screw shaft 7 and removed from the outer cylinder 1 of the screw shaft 7. The shelf member 12 includes an adjustment nut member 11 for adjusting the protrusion length of the extensible tube A, and elastic members 5 and 9 attached to the tip of the screw shaft 7 and the tip of the inner tube 2. A retractable shelf characterized by being fixed across the space.