JP2630048B2 - desk - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a desk that can be suitably used in an office or the like.

2. Description of the Related Art Conventionally, a desk of this type is generally configured such that left and right legs are connected by a receiving bar and other horizontal bars, and a top plate is placed and fixed on the receiving bar. .

In other words, in the related art, a rigid main body is formed by the legs and various crosspieces, 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 receiving bar. Therefore, unless a large number of locations on the top plate are firmly fixed to the receiving beam, the top plate is likely to be warped or bent.

For this reason, the conventional one requires a large number of bolts to be used for connecting the legs and connecting the top plate and the receiving bar, and thus has a problem that a great deal of time and labor is required for assembly and disassembly.

An object of the present invention is to solve such a problem.

[Means for Solving the Problems] The present invention employs the following means in order to achieve the above object.

That is, the desk according to the present invention is formed by connecting a leg to a top plate via a tapered connection portion and a claw-shaped engagement portion, and the top plate has a hollow reinforcing bar on the lower surface of the steel plate. The leg body has an upward surface joined to the lower surface of the top plate, and a rigid arm along the rear edge of the top plate is rigidly provided at the upper end. The tapered engagement portion comprises a concave tapered surface provided on one of the rear edge of the top plate and the rigid arm of the leg, and a convex tapered surface provided on the other. In this configuration, 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 side with respect to the top plate, and the claw-shaped engaging portion is provided on the top plate. A bending claw provided on one of the reinforcing bar and the upward surface of the leg, and a hook hole provided on the other. By sliding on the front side of the top plate leg by inserting the nail into the hook hole,
The bent claw is configured to be able to engage with the hook hole,
The rigid arm is tightly connected to the rear edge of the top plate by a bolt in a state where the engaging portions are engaged.

As a preferred example of the concave tapered surface and the convex tapered surface, the former is formed inside a groove provided on the top plate or the rigid arm, and the latter is formed outside a ridge provided on the rigid arm or the top plate. It is mentioned.

One of the bent claw and the hook hole may be provided on the reinforcing bar of the top plate, and the other may be provided on the upper surface of the leg,
In either case, the legs are engaged when the legs are slid to the front side with respect to the top plate.

When the hook hole is provided in the reinforcing bar of the top plate, the hook hole may be provided on the upright wall of the reinforcing bar or on the bottom wall. When the hook hole is provided in the bottom wall, the reinforcing bar is not necessarily provided in the left-right direction, but may be provided in the front-rear direction.

 Here, the front side refers to the side on which the user sits.

[Operation] With such a configuration, the lower surface of the top plate is brought into contact with the upper surface of the leg, and in this state, the leg is slid to the front side with respect to the top plate, so that the claw shape is obtained. The bent claw of the engaging portion engages the hook hole, the rigid arm of the leg approaches the edge on the back side of the top plate, and the convex tapered surface of the tapered engaging portion contacts the concave tapered surface. Touch In this state, when the rigid arm is tightened to the top plate with a bolt, the convex tapered surface comes into close contact with the concave tapered surface so as to bite, and the rigid arm is fixed to the top plate. Since the rigid arm is rigidly attached to the leg, when the rigid arm is strongly connected to the top plate,
The legs cannot tilt with respect to the top plate. Moreover,
If the rigid arm is fixed to the top plate and the legs cannot move back and forth, the bent claw will not come off the hook hole, so the lower surface of the top plate and the upper surface of the legs are separated. Is also gone.

Thus, with such a configuration, the rigid joining between the leg and the top plate is completed only by tightening the rigid arm to the top plate with bolts. Therefore, the legs can be firmly connected to the top plate using a very small number of bolts.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 6.

This desk has a top plate 1, a leg 2, a taper engagement portion 3
And a claw-shaped engaging portion 4.

As shown in FIG. 1 and FIG.
Is reinforced by a plurality of reinforcing members 12, 13, 14, and 15, and a decorative plate 16 is attached to the upper surface thereof.

The leg 2 includes a base 21 having an adjuster 21a, a support 22 erected from the rear edge of the base 21, and a pointing arm 23 extending from the upper end of the support 22 to the front side. It has a U-shape in side view. A rigid arm 24 extending inward is rigidly provided on the upper edge on the rear side of the leg 2.
That is, the rigid arm 24 is made of steel having a mounting portion 24a extending downward at the base end thereof, and the mounting portion 24a is rigidly connected to the back surface of the leg 2 by welding.

The tapered engagement portion 3 includes a concave tapered surface 31 provided on the rear side edge 1 a of the top plate 1 and a convex tapered surface 32 provided on the rigid arm 24 of the leg 2. Specifically, FIG. 2, FIG.
As shown in FIG. 6 and FIG. 6, the rear edge 1a of the top plate 1
A V-shaped groove is formed in the groove, and a concave tapered surface 31 is formed inside the V-shaped groove. That is, the concave tapered surface 31 is formed by denting the back surface of the reinforcing bar 15 of the top plate 1 into a V-shaped cross section. The rigid arm 24
A ridge having a trapezoidal cross section protrudes from a front surface of the ridge, and a concave tapered surface 32 is formed outside the ridge.

As shown in FIGS. 2 to 4, the claw-shaped engaging portion 4 includes a bent claw 41 provided on the upper surface 23a of the leg 2 and a hook hole 42 provided on the top plate 1. Become. More specifically, a pair of bent claws 41 are fixed to each of two locations on the upward surface 23a of the leg 2 by welding, and the tip of each bent claw 41 is bent to the front side. On the other hand, the hook hole 42 is formed in the upright walls 12a, 14a on the back side of the reinforcing bars 12, 14 of the top plate 1, has a rectangular opening shape, and has a pair of bent claws 41. Are designed to be inserted at the same time. In addition, bending nail
In order to engage the hook 41 with the hook hole 42 without rattling, the pair of bent claws 41 are inclined so that the tip side is slightly closer to the base end side, and the insertion depth of the bent claw 4 is reduced. It is desirable that both bent claws 4 be pressed against the inside of the hook hole 41 as the size increases.

Then, the engagement states of the engagement portions 3 and 4 described above are simultaneously obtained by the sliding operation of the leg 2 with respect to the top plate 1.

Further, as shown in FIG. 1 and FIG. 6, in a state where the engaging portions 3 and 4 are engaged, the rigid arm 24 is connected to the rear end of the top plate 1 by one bolt 51. They are tightly joined to the edge 1a. For this purpose, the rigid arm 24
Is provided with a bolt insertion hole 24b.
A nut 52 for screwing the bolt 51 is fixed in the reinforcing beam 15.

With a desk having such a configuration, the assembly and disassembly can be performed extremely simply. That is, the lower surface of the top plate 1 is brought into contact with the upward surface 23 a of the leg 2, and in this state, the leg 2 is slid to the front side with respect to the top plate 1, thereby bending the claw-shaped engaging portion 4. The claw 41 engages with the hook hole 42, and the rigid arm 24 of the leg 1 approaches the rear edge 1 a of the top plate 1, and the convex tapered surface 32 of the tapered engagement portion 3.
Abuts against the concave tapered surface 31. When the rigid arm 24 is tightened to the top plate 1 with the bolts 51 in this state, the convex tapered surface 32 comes into close contact with the concave tapered surface 31 so that the rigid arm 24 is fixed to the top plate 1. Rigid arm 24
Is rigidly attached to the leg 2, so that when the rigid arm 24 is strongly connected to the top 1, the leg 2 cannot tilt with respect to the top 1. Moreover, if the rigid arm 24 is fixed to the top plate 1 so that the leg 2 cannot move back and forth,
Does not come off from the hook hole 42, so that the lower surface of the top plate 1 and the upward surface 23a of the leg 2 do not separate from each other. By performing the above operations in reverse, the top plate 1
It is also possible to release the connection with the leg 2.

With such a configuration, the rigid arm 24 is simply tightened to the top plate 1 with one bolt 51,
The firm joining of each leg 2 and the top plate 1 is completed.
Therefore, it is possible to firmly couple the leg 2 to the top plate 1 using a very small number of bolts 51, one on each side.

Therefore, if the top plate 1 is appropriately reinforced with the reinforcing bars 12 to 15 to have high rigidity, it is possible to provide a desk which is extremely easy to assemble and disassemble and can secure the overall rigidity. It becomes possible.

In addition, the lower surface of the steel plate 11 is reinforced with hollow reinforcing bars 12, 13, 14, 15
The structure of the top plate 1 reinforced by the method is particularly suitable for mass production using a sheet metal material, and a manufacturing method thereof has been established. Therefore, there is also an advantage that the top plate 1 can be efficiently manufactured using existing equipment such as a press machine and a welding machine.

In the embodiment described above, the case where the concave tapered surface of the tapered engagement portion is directly formed on the upright wall of the hollow reinforcing bar 15 has been described. For example, as shown in FIG.
A solid bar 17 may be attached to the back side of the reinforcing bar 15 by welding, and a concave tapered surface 31 may be formed on the bar 17. In this case, a threaded hole 152 for screwing the bolt 51 into the bar 17 may be provided.

Further, the legs are not limited to the U-shape when viewed from the side, and may be, for example, those as shown in FIG. The leg 102 is provided at a support portion substantially at the center of the base portion 121.
An H-shaped side view is provided in which an upright 122 is provided, and an upper end of the support portion 122 supports a substantially central portion of the support arm 123.

Further, the hook hole of the claw-shaped engaging portion may be provided in the bottom wall of the reinforcing bar, for example, as shown in FIG. FIG. 9 is a plan sectional view showing a stage in which a hook hole 142 is provided in the bottom wall of the reinforcing beam 14 and the bending claw 41 is about to be engaged. In this case, it is preferable that the hook hole 142 has a trapezoidal shape in plan view in which both side edges 142a are inclined in a direction gradually approaching toward the front side. By doing so, it is possible to prevent the bent claw 41 from rattling right and left in the engaged state.

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

[Effects of the Invention] Since the present invention has the above-described configuration, it can be efficiently manufactured using existing equipment, and is extremely easy to assemble and disassemble. A desk that can be secured can be provided.

[Brief description of the drawings]

1 to 6 show an embodiment of the present invention. FIG. 1 is a perspective view, FIG.
4 and 5 are side sectional views showing the claw-shaped engaging portion, and FIGS. 5 and 6 are side sectional views showing the tapered engaging portion. FIG. 7 is a side sectional view showing another embodiment of the present invention, FIG. 8 is a perspective view showing still another embodiment, and FIG. 9 is a plan sectional view showing still another embodiment. DESCRIPTION OF SYMBOLS 1 ... Top board, 1a ... Back side edge 2 ... Leg, 3 ... Taper engagement part 4 ... Claw-shaped engagement part, 11 ... Steel plate 12, 13, 14, 15 ... Reinforcement Crosspiece 23a ... Upward surface, 24 ... Rigid arm 31 ... Concave taper surface, 32 ... Convex taper surface 41 ... Bending claw, 42 ... Hook hole 51 ... Bolt, 102 ... Leg 142 …… Hook hole

Claims (7)

(57) [Claims] 1. A desk in which a leg is joined to a top plate via a tapered engaging portion and a claw-shaped engaging portion, wherein the top plate has a hollow reinforcing bar on the lower surface of the steel plate. The leg body has an upward surface joined to the lower surface of the top plate, and a rigid arm along the rear edge of the top plate is rigidly provided at the upper end portion, The engaging portion includes a concave tapered surface provided on one of the rear edge of the top plate and the rigid arm of the leg, and a convex tapered surface provided on the other. The concave tapered surface and the convex tapered surface can be brought into close contact with each other by sliding the body toward the front side with respect to the top plate. And a bent claw provided on one of the upward surfaces of the legs, and a hook hole provided on the other, wherein the bent claw is attached to the hook By inserting the leg into the hole and sliding the leg toward the front side with respect to the top plate, the bent claw can be engaged with the hook hole, and in a state where the engaging portions are engaged. A desk, wherein the arm is tightly connected to a rear edge of the top plate by a bolt. 2. A concave tapered surface is formed in a V-shaped groove provided on an edge on the back side of the top plate, and a convex tapered surface is formed on a ridge protruding from a rigid arm. The desk of claim 1 wherein: 3. A method according to claim 1, wherein the convex tapered surface is formed on a ridge provided on the rear edge of the top plate, and the concave tapered surface is formed in a groove provided on the rigid arm. The desk according to claim 1, wherein 4. The desk according to claim 1, wherein the hook hole is provided in the reinforcing bar of the top plate, and the bent claw is projected from the upper surface of the leg. 5. The desk according to claim 4, wherein the hook hole is formed in an upright wall of the reinforcing bar. 6. The desk according to claim 4, wherein the hook hole is formed in a bottom wall of the reinforcing bar. 7. The desk according to claim 1, wherein the bent claw is projected from a lower surface of the top plate, and a hook hole is provided on an upper surface of the leg.