JPH04141107A - Desk - Google Patents

Abstract

PURPOSE:To facilitate assemblying and disassemblying and assure rigidity of a desk with a few bolts, by jointing legs at the wooden top plate through taper fittings and claw fittings and fitting a rigid arm with screws at edge of the top plate. CONSTITUTION:A taper fitting 3 is provided with a recessed taper face 31 formed at the edge member 13 of the top plate 1 and a protruded taper face 32 formed at the rigid arm 24 of the leg 2. And claw fitting 4 is provided with a bent claw 41 equipped at the upward face 23a of the leg 2 and a hook 42 equipped at the top plate 1. On assemblying the desk, the lower face of the top plate 1 is arranged along the upward face 23a of the leg 2 and the leg 2 is slid to the front side against the top plate 1 of the leg 2 to fit the bent claw 41 of the claw fitting 4 into the hook hole 42 and further to make close the rigid arm 24 of the leg 2 to the edge 1a of the back side of the top plate 1 and make contact the protruded taper face 32 of the taper fitting 3 at the recessed taper face 31. When the rigid arm 24 is fastened at the top plate 1 by bolts 51, the protruded taper face 32 is closely attached to the recessed taper face 31 and the rigid arm 24 is fixed at the top plate 1.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application J] The present invention relates to a desk that can be suitably used in an office or the like.

[Prior Art] Conventionally, in this type of desk, the left and right legs are generally connected by a support bar and other horizontal bars, and the top plate is placed and fixed on the support bar. .

In other words, in the conventional device, the legs and various crosspieces constitute a rigid main body, and the top plate is attached to the main body.

[Problems to be Solved by the Invention] However, the conventional top plate is designed to be reinforced by the support beams. Therefore, unless the top plate is firmly fixed in many places with the support beams, the top plate is likely to warp or bend.

Therefore, in the conventional type, it is necessary to use a large number of bolts to connect the legs to each other and to connect the top plate to the support bar, and there is a problem in that it takes a lot of time and effort to assemble and disassemble.

The present invention aims to solve such problems.

[Means for Solving the Problems] In order to achieve the above objects, the present invention makes the top plate made of wood that can exhibit rigidity by itself, eliminates the need for reinforcement with support beams, and improves the rigidity. The top plate is considered to be the structural base, and the legs are attached to the top plate so as not to tilt, which is completely different from conventional systems.

That is, the desk according to the present invention has legs joined to a top plate through a tapered engagement portion and a claw-shaped engagement portion, and the top plate is made of wood. The back side edge has a metal awning, and the legs have an upward surface that is joined to the lower surface of the top plate, and the upper end has a metal edge on the back side edge of the top plate. A rigid arm is opened along the edge, and the tapered engagement part is a concave tapered surface provided on either the edge of the back side of the top plate or the rigid arm of the leg, and a convex shape provided on the other side. The concave tapered surface and the convex tapered surface can be brought into close contact with each other by sliding the legs toward the front with respect to the top plate. The shaped engagement portion includes a bent claw provided on either the lower surface of the top plate or the upper surface of the leg, and a hook hole provided on the other, and the bent claw is connected to the hook hole. The bent claws are configured to be able to engage with the hook holes by inserting the legs into the hook holes and sliding the legs toward the front with respect to the top plate, and with the respective engaging portions engaged, the bending claws can be engaged with the hook holes. It is characterized in that the arm is tightly connected to the edge of the back side of the top plate with bolts.

A suitable example of a concave tapered surface and a convex tapered surface is:
The former may be formed on the inner side of a groove provided on the aperture of the top plate or the rigid arm, and the latter may be formed on the outer side of the protrusion provided on the aerobic arm or the aerated portion of the top plate.

Either the bent claw or the hook hole should be provided on the bottom surface of the top plate and the other on the upper surface of the legs, but in either case, the legs should be placed on the front side of the top plate. so that it engages when it is slid.

When hook holes are provided in the top plate, it is preferable to attach a metal plate with hook holes to the bottom surface of the top plate.

In this case, it is best to form a recess in the top plate, attach the metal plate so as to close the recess, and drill a hook hole in the part of the metal plate corresponding to the recess. preferable.

In order to improve the engagement state of the claw-shaped engagement portion, it is preferable that the hook hole has a trapezoidal shape in plan view that becomes gradually narrower toward the front side.

Further, contrary to the above, the bent claws may be provided protruding from the lower surface of the top plate, and the hook holes may be provided on the upper surface of the legs.

Note that the front side here refers to the side where the user is seated.

[Function] With this kind of configuration, the claw shape can be formed by attaching the lower surface of the top plate to the upper surface of the legs and sliding the legs toward the front with respect to the top plate. As the bent part of the engaging part engages with the hook hole, the rigid arm of the leg approaches the back edge of the top plate, and the convex tapered surface of the tapered engaging part comes into contact with the concave tapered surface. come into contact with In this state, when the rigid arm is tightened to the top plate with bolts, the convex tapered surface becomes
The rigid arm is fixed to the top plate by biting into the concave tapered surface. Since the rigid arms are rigidly attached to the legs, if the rigid arms are strongly connected to the top plate, the legs cannot tilt relative to the top plate. Moreover, if the rigid arm is fixed to the top plate and the legs cannot move back and forth, the bending type will not come off the hook hole, so the lower surface of the top plate and the upper surface of the legs will be separated. There will be nothing to do.

Therefore, with such a configuration, a strong connection between each leg and the top plate can be completed simply by tightening the rigid arms to the top plate with bolts. Therefore, it is possible to firmly connect the legs to the top plate using an extremely small number of bolts.

Embodiment 1 An embodiment of the present invention will be described below with reference to FIGS. 1 to 7.

This desk includes a top plate 1, legs 2, a tapered engaging part 3, and a claw-shaped engaging part 4.

As shown in Figs. 1 to 4, the top plate 1 is made up of a solid wooden core material 11 with decorative boards 12 attached to the top and bottom surfaces, and a metal plate is attached to the edge 1a on the back side. The auspicious phase 13 is fixedly installed.

The leg body 2 includes a base portion 21 having an adjuster 21a,
A support arm 22 extends from the rear edge of the base 21 and a support arm 23 extends from the upper end of the support arm 22 to the front side.
It is U-shaped in side view. A rigid arm 24 extending inward is rigidly installed on the upper edge of the back side of the leg body 2.

That is, the rigid arm 24 is made of steel and has a mounting portion 24a extending downward at its base end.
a is rigidly connected to the back surface of the leg body 2 by welding.

The tapered engagement portion 3 includes a concave tapered surface 31 provided on the aperture 13 of the top plate 1 and a convex tapered surface 32 provided on the rigid arm 24 of the leg 2. Specifically, Figures 2 and 6
As shown in the drawings and FIG. 7, a V-shaped groove is formed in the aperture 13 of the top plate 1, and the concave tapered surface 31 is formed inside the V-shaped groove. Further, a protrusion having a trapezoidal cross section is provided on the front surface of the rigid arm 24, and the concave tapered surface 32 is formed on the outside of the protrusion.

The claw-shaped engaging portion 4 is attached to the leg body 2 as shown in FIGS. 2 to 5.
It has a bending mold 41 provided on the upper surface 23a of the top plate 1, and a hook hole 42 provided in the top plate 1. Specifically, a pair of bending molds 41 are fixed by welding at the positions 2 on the upper surface 23a of the leg body 2, and the tip of each bending mold 41 is bent toward the front side. On the other hand, the hook hole 42 is provided in the metal plate 15 attached to the lower surface of the top plate 1. That is, a concave portion 14 is formed in a portion of the top plate 1 corresponding to the bending mold 41, and the metal plate 15 is fixed to the lower surface of the top plate 1 so as to close this concave portion 14. It is. A hook hole 42 is bored in a portion of the metal plate 15 corresponding to the recessed portion 14 . As shown in FIG. 5, the hook hole 42 has a trapezoidal shape in plan view whose width gradually decreases toward the front side. The bending molds 41 are inserted between the holes 42a. In addition, 23b
is a spacer provided on the upper surface 23a of the leg body 2.

The engaged state of the above-mentioned image joining portions 3.4 is the same as that of the top plate 1.
This is achieved simultaneously by the sliding movement of the leg body 2 relative to the target body.

Furthermore, as shown in FIGS. 1 and 7, both engaging portions 3.4
In the engaged state, each of the rigid arms 24 is tightly connected to the rear side edge 1a of the top plate 1 with one bolt 51.

For this purpose, the rigid arm 24 has a bolt insertion hole 24b.
The screw hole 52 for screwing the bolt 51 is provided in the aperture 13 of the top plate 1.

A desk with such a configuration can be assembled and disassembled extremely easily.

That is, by attaching the lower surface of the top plate l to the upper surface 23a of the legs 2 via the spacer 23b, and in this state sliding the legs 2 toward the front side with respect to the top plate 1, the claw-shaped engagement is made. The bending mold 41 of the joining part 4 engages with the hook hole 42, and the rigid arm 24 of the leg 1 engages with the edge 1 on the back side of the top plate 1.
a, the convex tapered surface 32 of the tapered engaging portion 3 comes into contact with the concave tapered surface 31. When the rigid arm 24 is tightened to the top plate 1 with the bolt 51 in this state, the convex tapered surface 32 bites into the concave tapered surface 31 and comes into close contact, and the rigid arm 24 is fixed to the top plate 1. Since the rigid arm 24 is cut into the leg 2, when the rigid arm 24 is strongly connected to the top plate 1, the leg 2 cannot tilt relative to the top plate 1. Moreover, if the rigid arm 24 is fixed to the top plate 1 and the legs 2 cannot be moved back and forth, the bending mold 41 will not come off from the hook hole 42, so the lower surface of the top plate 1 and the legs 2 There is no longer any separation between the upper surface 23a and the upper surface 23a. Moreover, it is also possible to release the connection between the top plate 1 and the legs 2 by performing the above operation in reverse.

Therefore, with such a configuration, a strong connection between each leg 2 and the top plate 1 can be completed by simply tightening the rigid arm 24 to the top plate 1 with one bolt 51. Become. Therefore, it is possible to firmly connect the legs 2 to the top plate 1 using an extremely small number of bolts 51, one on each side.

In addition, since the top plate 1 is made of wood, it is possible to give it appropriate rigidity, and this top plate 1 can be
As a structural base, the legs 2 can be fixed and non-tiltable. Therefore, with the above-described configuration, it is possible to provide a desk that is extremely easy to assemble and disassemble, and that also ensures overall rigidity.

Note that the legs are of course not limited to those having a U-shape when viewed from the side, and may be, for example, as shown in FIG. 8. This leg 102 has an H-shape in side view, with a support 122 erected approximately at the center of a base 121, and the upper end of this support 122 supporting approximately the center of a support arm 123. .

In addition, various modifications can be made without departing from the spirit of the present invention.

[Effects of the Invention] As detailed above, the present invention uses a wooden top plate, which can easily provide rigidity, as a structural base, and attaches legs to the top plate with a small number of bolts to prevent rattling. Since the desk is designed to be strongly connected without any problems, it is possible to provide a desk that is extremely easy to assemble and disassemble, and also ensures overall rigidity.

[Brief explanation of drawings]

1 to 7 show one embodiment of the present invention, in which FIG. 1 is a perspective view, FIG. 2 is a perspective view showing main parts exploded and cut away, and FIG.
4 are side sectional views showing the claw-shaped engaging portion, FIG. 5 is a plan sectional view showing the same portion, and FIGS. 6 and 7 are side sectional views showing the tapered engaging portion. FIG. 8 is a perspective view showing another embodiment of the present invention. 1... Top plate 2... Legs 4... Claw-shaped engaging portion 14... Concave portion 23a... Upward surface 31... Concave tapered surface 41... Bent type 51. ... Bolt 1a ... Back side edge 3 ... Taper engaging portion 13 ... Mizuki phase 15 ... Metal plate 24 ... Rigid arm 32 ... Convex tapered surface 42 ... Hook hole 102... leg body

Claims (1)

[Scope of Claims] 1. A desk consisting of legs joined to a top plate via a tapered engagement part and a claw-shaped engagement part, the top plate being made of wood, and the back side of the top plate being made of wood. The legs have metal scraps on the edge of the top plate, and the legs have an upward surface that is joined to the bottom surface of the top plate, and have an upper end that is attached to the edge of the back side of the top plate. The tapered engagement portion is formed by a concave tapered surface provided on either the back edge of the top plate or the rigid arm of the leg, and a convex taper provided on the other side. The concave tapered surface and the convex tapered surface can be brought into close contact by sliding the legs toward the front with respect to the top plate. The engaging portion includes a bent claw provided on either one of the lower surface of the top plate and the upper surface of the leg, and a hook hole provided on the other, and the bent claw is inserted into the hook hole. The bending claw is configured to be able to engage with the hook hole by inserting the hook and sliding the leg body toward the front side with respect to the top plate, and with the respective engaging portions engaged, the arm is tightly connected to the edge of the back side of the top plate by bolts. 2. A claim characterized in that the concave tapered surface is formed in a V-shaped groove provided in the end material of the top plate, and the convex tapered surface is formed in a protrusion protruding from the rigid arm. Desk described in item 1. 3. Claim 1, wherein the convex tapered surface is formed on a protrusion provided on the end material of the top plate, and the concave tapered surface is formed in a groove provided on the rigid arm. The desk mentioned. 4. The desk according to claim 1, 2 or 3, wherein the hook hole is provided in a metal plate attached to the lower surface of the top plate, and the bending claw is provided protrudingly provided on the upper surface of the leg body. . 5. A recess is formed in the top plate, the metal plate is attached so as to close the recess, and a hook hole is bored in a portion of the metal plate corresponding to the recess. 5. The desk according to claim 4. 6. The desk according to claim 5, wherein the hook hole has a trapezoidal shape in plan view that becomes gradually narrower toward the front side. 7. Claims 1 and 2, characterized in that the bent claw is provided protrudingly on the lower surface of the top plate, and the hook hole is provided on the upper surface of the leg body.
Or the desk described in 3.