JPH0312281Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention is a tension extensible shelf, in which both ends of the extensible pipe shelf, which is a combination of a plurality of extensible pipes arranged in parallel, are protruded from both opposing wall surfaces. This invention relates to a telescopic shelf that is constructed by being pressed into contact with tension means.

"Prior Art" Conventionally known telescopic shelves of this type are disclosed in, for example, Japanese Utility Model Publication No. 1985-8516 and Japanese Utility Model Application Publication No. 1983-155713.
There are three types of retractable shelves introduced in Japanese Utility Model Publication No. 53-158519.

What is described in the official gazette is, ``Two sets of wire rods in which an appropriate number of wire rods are lined up and their ends and middles are connected by an end plate and an intermediate plate are connected to each other on opposite sides. A telescopic shelf in which the end plate and the intermediate plate are passed through and crossed in a staggered manner, and a cap member having a pressed end surface is fitted to the outer protruding end of the husband, and the interval between each intermediate plate of both sets is reduced or expanded. After adjusting the overall length of the shelf, a threaded rod and two round nuts are inserted between the intermediate plates to press both ends of the shelf against the mounting wall. What is described in the official gazette of ``In the sliding part of a telescopic shelf in which both frames A and B, each of which has a base fixed to both ends of a plurality of shelf rods arranged in parallel, are telescopically fitted together and combined, an auxiliary frame B. A box body 5 having a vacant chamber 6 is slidably attached to the shelf rod 3 of the shelf rod 3, and one end of the shelf rod 3 that passes through the vacant chamber 6 comes into contact with a support portion 9 formed on the inner wall of the vacant chamber 6. A plate 8, which is prevented from sliding in the direction of the main frame A, is fitted so as to be slidable and tiltable, and a compression spring 10 is interposed between the base body 2 of the main frame A and the box body 5. "A shelf that consists of shelves."
The telescoping shelf described in the publication is made by ``having both flat plates bent into a hollow shape and fitted into each other so as to be able to slide and expand. A shelf with a built-in extension/contraction adjustment connector in which a connecting screw 2 protruding from the inside is inserted into the center of both legs 1 and 4 of the letter shape.

"Problem to be solved by the invention" By the way, in the simple extendable shelf described in the above publication, when adjusting the distance between the left and right intermediate plates,
Since you have to use both hands to twist the two round nuts, it takes a lot of effort to extend and retract the shelf, making it impossible to do so.Moreover, the pressure contact surfaces at both left and right ends of the shelf are in a state of disarray, making it difficult to install and fix. It is unstable.

In addition, in the article shelf described in the publication, it is uncertain whether the locking force of the plate 8 in the box body 5 attached to the shelf stem 3 to the shelf stem 3 can withstand the pressure of the compression spring 10. I am concerned about the crimp fixation of both ends of the shelf.

In addition, in the canopy described in the publication, it is difficult to twist the nut 7 in the connecting tool 6 provided at the center of the canopy, and the range of expansion and contraction of the connecting screw 2 is limited by the nut 7, so that the degree of expansion and contraction of the canopy is limited. There are drawbacks such as being small.

Therefore, in the present invention, we have solved the above-mentioned problem of the unintentional failure rate when operating the telescopic shelf and the problem of instability of the installed shelf, and made the telescopic operation quick and easy to install the shelf. The technical challenge is to create a retractable shelf that remains stable.

``Means for solving the problem'' The means devised to solve the problem are:
The shelf rods to be arranged in parallel are made of large and small pipes of different diameters, and both pipes are inserted into each other so that they can slide and expand and contract.As the expansion and contraction actuation device, a pipe is installed between the corresponding large and small pipes in the center of the shelf. A screw rod is installed in which a twisting piece is fixed and the rod portions on both sides are screwed in opposite directions, and the screw rods on both sides are screwed into and out of the corresponding large and small pipes, and the screw rods of the small diameter pipe The insertion part and both small-diameter pipes adjacent to the front and back thereof are integrally connected by a connecting rod, and by rotating the screw rod with a twisting piece, both ends of the screw rod move forward and backward into both large and small pipes, and the shelf rod expands and contracts. The system is configured to perform the following steps.

"Operation" According to the above means, when the screw rod is twisted by the twisting piece at the center of the screw rod, both ends are inserted into or removed from the pipes on both sides of the husband and husband by using reverse threads, and large and small pipes are inserted. Adjust the total length of the shelf by expanding and contracting the degree. At this time, the pipes on both the left and right sides are moved forward and backward at the same time by twisting the screw rods, so the speed of movement is doubled, speeding up the expansion and contraction operation of the shelf, and facilitating the work of installing the shelf.

``Example'' Example drawings FIG. 1 is a perspective view showing the entire structure of the telescopic shelf of the present invention, and FIG. 2 is an exploded perspective view thereof. 7 pieces)
The outer ends of the pipes are inserted and fixed in parallel to a connector 2 made of a curved plate, and the intermediate connector 3 is inserted and fixed to each inner end, and the small diameter pipe group B has a small diameter pipe 4
The same number of large-diameter pipes are arranged in parallel at the same spacing, and each outer end is inserted and fixed to a connecting body 2' made of a curved plate. The inner end of the inner cut pipe is cut out to form a central hollow S, and the inner end of the inner cut pipe is integrally connected to both the small diameter pipes adjacent to the front and back thereof by a connecting rod 5, and a fixing nut is attached to the cut inner end. 6 is fitted and fixed.

Thus, the large and small pipe groups A and B are made to face each other, and the opposing inner ends of the corresponding large and small pipes are inserted into each other to connect them so that they can slide and expand and contract, thereby forming an extendable shelf with both pipe groups. .

Reference numeral 7 is a screw rod for operating the expansion and contraction of both the large and small pipe groups.
A and 7b are each threaded with reverse threads, and the rod 7b on one side is screwed into the small diameter pipe 4 through the fixing nut 6, and the rod 7a on the other side is also screwed with a similar fixing nut 6'. It is screwed into the large-diameter pipe 1 and installed between the large and small pipes so that it can be inserted into and removed from the pipes on both sides by rotating the twisting piece 8 in forward and reverse directions.

Incidentally, reference numeral 9 in the figure is a non-slip piece attached to the outer end surface of the connecting body, and is made of a flexible or elastic material.

"Effect of the invention" Since the telescoping shelf of the invention can be expanded and contracted by mutual sliding of large and small pipes, it is very easy to match the distance between the mounting walls, and the sliding expansion and contraction operation is performed by rotating the screw rod 7. This is done by inserting screw rods to move both pipe groups forward and backward at the same time, so the expansion and contraction operation is quick, and the shelf length adjustment and tension fixing work can be done simultaneously and quickly. At the end, the ends of the shelf are pushed out by the extension of the screw rods, and they are pushed toward both walls, and the pushing pressure allows the shelves to be fixed to both walls without the need for other fixing means such as screws. Since it is easy to attach and detach, this shelf can be used as an article placement shelf even when a shelf support cannot be provided on the wall.

In addition, since the screw rod 7 is installed long in the left and right direction, the range of insertion and removal into both large and small pipes is wide, and the degree of expansion and contraction of the entire shelf length is large, so it can be used widely because it can accommodate large and small gaps between the two mounting walls. In addition, since the screw rod is twisted and moved forward and backward into both pipes by the twisting piece in the center, the shelf can be expanded and retracted easily and quickly, and this twisting piece does not protrude too much between the parallel pipes. It does not get in the way when using the shelf.

Furthermore, since the connecting rod 5 is installed from the end of the inner resection pipe to the front and rear adjacent pipes, twisting deformation does not occur at the sliding part of the shelf, making the expansion and contraction operations smooth and easy. At the same time, the attached shelf is stable, difficult to fall off, and strong against loads.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a telescopic shelf according to an embodiment of the present invention;
Figure 2 is an exploded perspective view of it, and Figure 3 is from X in Figure 1.
FIG. 4 is a longitudinal cross-sectional view of the X-ray section, and FIG. 4 is a longitudinal cross-sectional view of the Y--Y line in the figure. A...Large diameter pipe group, B...Small diameter pipe group, 1
...Large diameter pipe, 2, 2'...Connection body, 3...Intermediate connection body, 4...Small diameter pipe, 5...Connection rod, 6,
6'... Fixing nut, 7... Screw rod, 8... Twisting piece, 9... Anti-slip piece.

Claims (1)

[Scope of utility model registration request] The outer ends of the parallel pipes are connected and fixed by connecting bodies, and large and small pipe groups A and B of different diameters are opposed from left and right, and the corresponding large and small pipes can be slid and expanded and contracted by fitting and inserting them into each other. In the extensible pipe shelf configured as shown in FIG. A screw rod 7 with opposite threads at both ends is spanned, and both opposite threads are screwed into and out of both pipes using fixing nuts fixed to the ends of the corresponding large and small pipes, centering on the fixing nut of the small diameter pipe. A telescopic shelf characterized in that connecting rods 5 are orthogonally mounted between the adjacent pipes on both the front and rear sides.