JPH10313954A - Shelf - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shelf which has a shelf board easy to be worked and is easily assembled/diassembled in the shelf using a shelf board adjustable its height such as wooden and a plastic board. SOLUTION: A shelf is constituted of a plurality of supports having ring grooves, sleeves which are provided with ring projecting beams engaged with the ring grooves of the supports in the insides and have the outsides being tapered, bushes 3 having the tapered surface engaged with the tapers of the sleeve outsides in the insides, and a shelf board 2 which is provided with fitting holes matched with the outer diametrical surfaces the of bushes 3 in appropriate positions. The bushes 3 are embedded and fixed in the fitting holes provided in the shelf board 2, the gradient of the inner wall of the bush 3 and the gradient of the outer wall of the sleeve are engaged with each other, and when a vertical load such as a dead weight of the shelf board 2 is applied on the shelf board 2, the outer wall of the sleeve and the inner wall of the bush 3 are pressed against each other so as to generate a friction force and at the same time, the ring projecting beam of the inside wall of the sleeve and the ring groove in the outer wall of the support are firmly engaged with each other so as to prevent the shelf board 2 from being fallen.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shelf in which the height of a shelf can be adjusted, and more particularly to a shelf in which a plate such as wood or plastic is used as a shelf.

[0002]

2. Description of the Related Art Conventionally, in Japanese Patent Publication No. 50-25372, truncated conical receiving brackets are attached to four corners of a shelf plate, and there are grooves provided at upper and lower intervals in the corner pillars.
A pillar mounting member consisting of two parts is inserted between the corner post and the truncated conical receiving bracket at the four corners, and a rib is provided inside the member and fitted into the groove of the corner post, and the lower end of the pillar mounting member is Shelves have been proposed that have outwardly extending circular ridges to prevent the shelves from lowering. Also, in Japanese Patent Application Laid-Open No. H6-70817, conical tapered holes are provided at four corners of a shelf plate, and a support is attached to the tapered hole via a tapered sleeve. A shelf system has been proposed in which a plurality of annular grooves are provided, an annular rib is provided on the inner surface of the sleeve to engage with the annular groove of the column, and the outer surface is an engaging outer surface.

[0003]

However, in the case of the shelf proposed in Japanese Patent Publication No. 50-25372, when the shelf is made of metal, the truncated cone-shaped receiving bracket is welded or the like. Although it is attached to the four corners, it is difficult to attach the bracket when the shelf is made of plastic or wooden board. Further, as a shelf system using plastic or the like for the shelf, Japanese Patent Laid-Open Publication No. Hei 6-70817 proposes a shelf provided with conical tapered holes at four corners of the shelf.
However, in this shelf, conical tapered holes are provided at the four corners of the shelf plate as described above, but it is difficult to provide tapered holes in the plate by post-processing, and in particular, the inner diameter of the tapered hole is reduced. There was a problem that it was difficult to stabilize.

Accordingly, the present inventor has conducted intensive studies in view of the conventional drawbacks, and as a result, has provided a shelf which is easy to process a shelf plate and which is easy to assemble and disassemble.

[0005]

According to a first aspect of the present invention, there is provided a shelf having a plurality of pillars provided with annular grooves at appropriate intervals in a vertical direction and an annular ridge engaging with the annular grooves of the pillars. A sleeve having a tapered outer surface, a bush having a tapered surface formed on the inner surface for engaging with the taper of the outer surface of the sleeve, and a fitting hole adapted to an outer diameter surface of the bush were provided at appropriate positions. It consists of a shelf, and a bush is embedded and fixed in a fitting hole provided in the shelf, and this shelf is attached to a support via a sleeve.The slope of the bush inner wall and the slope of the sleeve outer wall are mutually different. Engaged
When a vertical load is applied to the shelf such as the weight of the shelf, the outer wall of the sleeve and the inner wall of the bush are pressed against each other to generate frictional force, and the annular ridge of the inner wall of the sleeve and the annular groove of the outer wall of the column are firmly fixed. To prevent the shelves from falling.

In the shelf according to the second aspect of the present invention, a sleeve is composed of a plurality of parts having a semi-cylindrical inner surface, and a concave portion and a convex portion are formed on both side edges of the part. The side edges of the parts are engaged with each other to form a cylindrical sleeve. An annular ridge formed on the inner surface of the part is engaged with an annular groove of a desired height provided on the column, and arranged on the outer wall of the column. The installation can be facilitated simply by inserting the support having the sleeve attached thereto into the bush attached to the shelf.

According to a third aspect of the present invention, there is provided a shelf, wherein a hole provided in the shelf plate has a cylindrical shape, and an outer diameter of a bush embedded in the hole is the same from the tip to the base, and Is formed with a small diameter at the tip and a large diameter at the base. When a wooden board or the like is used for the shelf, the fitting hole can be easily formed by drilling, and the hole diameter becomes stable.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. Reference numeral 1 denotes a column, which is circular in cross section and has a number of annular grooves 11 formed at appropriate intervals on the outer wall over substantially the entire length thereof. The column 1 is made of a metal tube such as a steel tube or a rod made of a synthetic resin. The annular groove 11 is provided on the outer wall thereof, and the surface thereof is appropriately subjected to surface treatment such as plating. In the present embodiment, the column 1 has a circular cross section. However, the present invention is not limited to this, and a rod having an appropriate shape such as a square or an ellipse may be used.

The shelf board 2 is formed by chamfering four corners of a rectangular wooden board into a circular shape, and a fitting hole 21 is provided through the four corners. The bush 3 is embedded in the fitting hole 21. The bush 3 has a cylindrical shape whose outer diameter is equal to the inner diameter of the fitting hole 21 of the shelf 2, one end of which is a tip 31, and the other end of which is a base 3.
2, a flange portion 33 is provided on an intermediate outer wall between the distal end portion 31 and the base portion 32. The outer surface of the bush 3 is a cylindrical surface that matches the inner surface of the fitting hole 21, and the inner surface is
1 has a conical shape smaller in diameter than the base 32. The bush 3 has a tip 31 inserted into the fitting hole 21 from the back of the shelf 2, a flange 33 abutting against the back of the shelf 2, and fixed to the shelf 2 with a wood screw or the like. The fitting hole 21 may be a hole having an appropriate shape such as a rectangular cross-section or an ellipse.

The sleeve 4 is composed of two semi-cylindrical parts having recesses and protrusions which engage with each other on both side edges, and the irregularities formed on the side edges 41 of the two parts engage with each other. Thus, a cylindrical sleeve 4 is formed. The outer surface of the sleeve 4 has a conical shape adapted to the gradient of the conical shape of the inner surface of the bush 3, and the inner surface is formed with an annular ridge 42 adapted to the annular groove 11 provided on the outer wall of the column 1. In the present embodiment, the sleeve 4 has been described as being composed of two parts, but may be composed of three or more parts. The sleeve 4 may be made by molding a synthetic resin, or may be made by casting a metal.

Next, the assembly of the shelf of the present invention will be described. The bush 3 is inserted into the fitting hole 21 of the shelf 2 in advance, and a flange 33 provided on an outer wall of the bush 3 is screwed to the shelf 2 with a wood screw. An annular ridge formed on the inner surface of the part is engaged with an annular groove 11 having a desired height provided on the column 1 and disposed on the outer wall of the column 1. Next, when the support 1 to which the sleeve 4 is attached is inserted into the bush 3 attached to the shelf 2, the slope of the inner wall of the bush 3 and the slope of the outer wall of the sleeve 4 are engaged with each other, and the shelf 2 When a vertical load is applied to the shelf plate 2 such as its own weight, the outer wall of the sleeve 4 and the inner wall of the bush 3 are pushed together to generate a frictional force, and the annular ridge 42 of the inner wall of the sleeve 4 and the outer wall of the column 1 are formed. The annular groove 11 is firmly engaged to prevent the shelf board 2 from falling.

[0012]

As described above, in the shelf according to the first aspect of the present invention, a plurality of pillars provided with annular grooves at appropriate intervals in the vertical direction and an annular ridge engaging with the annular grooves of the pillars are provided on the inner surface. A sleeve having a tapered outer surface, a bush having a tapered surface formed on the inner surface for engaging with the taper of the outer surface of the sleeve, and a fitting hole adapted to an outer diameter surface of the bush were provided at appropriate positions. It consists of a shelf, and a bush is embedded and fixed in a fitting hole provided in the shelf, and this shelf is attached to a support via a sleeve.The slope of the bush inner wall and the slope of the sleeve outer wall are mutually different. Engaged
When a vertical load is applied to the shelf such as the weight of the shelf, the outer wall of the sleeve and the inner wall of the bush are pressed against each other to generate frictional force, and the annular ridge of the inner wall of the sleeve and the annular groove of the outer wall of the column are firmly fixed. To prevent the shelves from falling. Also, no screws or the like are required for assembly, and assembly is easy.

In the shelf according to the present invention, a sleeve is constituted by a plurality of parts having a semi-cylindrical inner surface, and a concave portion and a convex portion which are engaged with each other are formed on both side edges of the part. The side edges of the parts are engaged with each other to form a cylindrical sleeve, and an annular ridge formed on the inner surface of the part is engaged with an annular groove of a desired height provided on the support,
The installation is facilitated only by disposing the support on which the sleeve is mounted, and then inserting the support on which the sleeve is attached into the bush attached to the shelf. Further, since the sleeve is disassembled into a plurality of parts, the sleeve diameter is easily reduced when the gradient of the outer wall of the sleeve and the inner wall of the bush are engaged with each other, and the annular ridge of the inner wall of the sleeve is formed in the annular groove of the outer wall of the column. And the shelf plate is hardly displaced.

According to a third aspect of the present invention, there is provided the shelf, wherein a hole provided in the shelf plate has a cylindrical shape, and an outer diameter of a bush embedded in the hole has the same diameter from the tip to the base, and an inner diameter. Is formed with a small diameter at the tip and a large diameter at the base. When a wooden board or the like is used for the shelf, the fitting hole can be easily formed by drilling, and the hole diameter becomes stable. In addition, even when a column having a non-circular cross section such as a square cross section is used, it is possible to cope by making only the inner surface of the bush similar to the column outer diameter,
Processing of the fitting holes in the shelf is easy.

[Brief description of the drawings]

FIG. 1A is a front view and FIG. 1B is a plan view showing an example of an embodiment of the shelf of the present invention.

FIG. 2 is a partially cutaway front view showing an example of an embodiment of a shelf plate used for the shelf of the present invention.

FIG. 3A is a partially cutaway front view showing an example of an embodiment of a bush used for the shelf of the present invention, and FIG. 3B is a plan view.

FIG. 4 is a perspective view showing an example of a state in which a sleeve is attached to a column in the shelf of the present invention.

[Explanation of symbols]

 Reference Signs List 1 support 11 annular groove 2 shelf 21 fitting hole 3 bush 31 distal end 32 base 33 flange 4 sleeve 41 side edge 42 annular ridge

Claims (3)

[Claims] 1. A sleeve having an inner surface provided with a plurality of columns provided with annular grooves at appropriate intervals in the vertical direction and an annular ridge engaging with the annular grooves of the columns, and a sleeve having an outer surface tapered. A bush formed on the inner surface with a tapered surface that engages with the taper on the outer surface, and a shelf plate provided with a fitting hole at an appropriate position adapted to the outer diameter surface of the bush, and a fitting hole provided on the shelf plate. A bush is embedded in and fixed to the shelf, and the shelf plate is attached to a support via a sleeve. 2. A sleeve comprising a plurality of semi-cylindrical inner surfaces, a concave portion and a convex portion are formed on both side edges of the part, and the side edges of the plurality of parts are engaged with each other. 2. The shelf according to claim 1, wherein the shelf is a tubular sleeve. 3. A hole provided in a shelf plate is formed in a cylindrical shape, and an outer diameter of a bush embedded in the hole is the same from the tip to the base, and an inner diameter of the bush is small at the tip and large at the base. 3. The shelf according to claim 1, wherein the shelf has a diameter.