JP2556186B2 - desk - Google Patents

Description

The present invention relates to a desk used in an office or the like.

[Prior Art] In a desk configured to support a top plate with a plurality of legs, a plurality of insert nuts are planted on the lower surface of the top plate, and the upper end portions of the legs are passed through each insert nut. The top plate and the legs are joined by tightening the bolts.

Further, in the internal cavity type in which the upper surface plate is fixed to the upper surface of the peripheral frame member, the peripheral frame members are connected by a plurality of intermediate rail members, and the intermediate rail members and the upper ends of the legs are connected by a plurality of bolts. Some are designed to be joined.

[Problems to be Solved by the Invention] However, in such a configuration, it is necessary to dispose insert nuts made of a material different from that of the top plate at required positions on the lower surface of the top plate, respectively. Requires the same number of bolts and so on. Further, in the case of the internal cavity type, a plurality of intermediate crosspieces for connecting the peripheral frame members are required.

Therefore, the number of parts is increased, and it is difficult to smoothly assemble the top plate and the legs.

The present invention aims to eliminate such inconvenience.

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

That is, the desk according to the present invention includes a top plate and a pair of legs that support the top plate, and the top plate has a concave engaging portion or a convex engaging portion on its lower surface. Each leg is provided with a convex engaging portion or a concave engaging portion on the upper surface, and the convex engaging portion or the concave engaging portion of the leg is the concave engaging portion of the top plate. Alternatively, it is characterized in that the legs are engaged with each other by the convex engagement portions so that the legs are tightly joined to each other.

In order to increase the strength of the top plate with a relatively simple structure and to improve the storage capacity when stacking the top plates, place the top plate on the periphery of which a metal frame material is placed. ,
The concave engaging portion may be formed on the lower surface of the frame material.

In that case, a convex engaging portion that engages with the concave engaging portion of the top plate is provided on the leg side, but the leg has a supporting arm extending toward the peripheral edge side of the top plate at the upper end portion. By forming convex engaging portions on both ends of the upper surface of the support arm, the joint strength between the top plate and the legs can be increased and the top plate can be stably supported.

When the top plate has a small width, the legs may be directly tightened in the direction in which the top plate and the legs are engaged with each other, but when the top plate has a large width. However, in order to surely support the legs, it is advisable to interpose a horizontal member between the legs and tighten and join the legs in a direction toward each other.

[Operation] With such a configuration, the concave engaging portion or the convex engaging portion of the top plate and the convex engaging portion or the concave engaging portion of the leg are engaged with each other, and then the leg is engaged. When the members are tightened and joined together in a direction in which they are closer to each other, the legs are joined together and the legs and the top plate are joined together.
With such a structure, a plurality of insert nuts and bolts for directly tightening the top plate and the legs can be eliminated. Also, by removing the fastener and moving the legs in a direction in which they separate from each other, it is possible to easily disassemble the legs and the legs and the top plate.

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

As shown in FIG. 1, this desk includes a top plate 1, a pair of legs 2 for supporting the top plate 1, and a horizontal member 3 interposed between the legs 2.
Is provided.

As shown in FIG. 2, the top plate 1 is provided with a hollow metal frame member 11 at its peripheral portion, and an upper plate 11 and a lower plate 13 are provided on the upper surface 11a and the lower surface 11b of the frame material 11, respectively. It has a flash structure in which a core material 14 is fixedly provided inside and is formed in an oval shape. A peripheral member 15 is attached to the outer surface 11c of the frame member 11, and a plurality of sets of concave engaging portions 16 are provided on the lower surface 11b. As shown in FIG. 3, each concave engaging portion 16 is an elongated hole formed so that the opening width of the portion located inside the top plate 1 is narrower than the opening width of the portions located on the left and right sides. There is a notch 13a in the lower surface plate 13 at a position corresponding to each concave engaging portion 16.

As shown in FIG. 1, the leg 2 is provided with a dogleg-shaped support arm 21 that extends toward the peripheral edge of the top plate 1 at the upper end, and is bent in a dogleg shape at the lower end like the above-mentioned support arm 21 and falls. Prevention leg
Made of metal with 22 and the upper surface 21a of each support arm 21
Convex engagement portions 23 are respectively provided on both ends of the protrusion.
Each convex engaging portion 23 is made of metal with two parallel locking claws 23a protruding inward, and is fixed to the upper surface 21a of the support arm 21 by welding or the like.

The horizontal member 3 is, as shown in FIG. 4, provided with metal holders 32 and nuts 33 in both ends of a horizontal member main body 31 made of a hollow metal square pipe. As shown in FIG. 5, the holder 32 is formed by bending a bent piece 32a of a cross-shaped metal plate and fixing the bent piece 32a to the horizontal member main body 31 by spot welding. The nut 33 is fixed. A positioning pin 34 is provided at the center of the upper surface 3a of the horizontal member 3, and the positioning pin 34 is attached to the lower surface of the top plate 1.
It is adapted to be fitted into a positioning hole 1b provided at the center of 1a.

In this desk, as shown in FIGS. 6 and 7, in the state in which the convex engaging portion 23 of the leg 2 is engaged with the concave engaging portion 16 of the top plate 1, the legs 2 are interlocked with each other. It is made to approach in the direction of approaching (arrow A), and the horizontal member 3 is interposed between the legs 2 to be assembled. Then, the bolts 4 are inserted through the through holes 21b provided in the center of the support arm 21, and the bolts 4 are respectively tightened to the nuts 33 of the horizontal member 3, whereby the legs 2 are tightly joined. In that case, the top plate 1 and the leg 2 are joined in a state in which the locking claw 23a of the convex engaging portion 23 of the leg 2 is locked to the bottom wall 11d of the frame member 11.

Therefore, with such a structure, the top plate 1
Since the top plate 1 and the leg 2 can be easily and reliably joined without using a plurality of bolts for directly fastening the top plate 1 and the leg 2, a plurality of insert nuts are eliminated from the lower surface 1a of the top plate 1. can do. Also, if necessary,
By removing the left and right bolts 4 for fastening the horizontal member 3 and moving the legs 2 away from each other, the legs 2 and the top plate 1 and the legs 2 can be easily disassembled.

If the top plate 1 is provided with a metal frame member 11 on its peripheral edge and the concave engaging portion 16 is formed on the frame member 11,
The top plate 1 is flat without any protruding portion. for that reason,
The strength of the top plate 1 can be increased with a relatively simple structure, and the storage efficiency when the top plates 1 are stacked and placed can be effectively increased.

In addition, the leg 2 has a support arm 21 extending toward the peripheral edge of the top plate 1 at the upper end, and the upper surface 21 of the support arm 21.
When the convex engaging portions 23 are formed on both end sides of a, the frame member 11 and the support arm 21 can be directly joined to each other.
The joint strength between the leg 2 and the leg 2 can be effectively increased, and the top plate 1 can be stably supported by the support arm 21. In addition, the supporting arm 21 of the leg 2 is used for the frame member 11 of the top plate 1.
By supporting the above, it is possible to eliminate the conventional intermediate crosspiece that connects the frame members in the peripheral edge portions together without reducing the strength of the entire top plate 1.

Further, when the horizontal member 3 is interposed between the two legs 2 and the horizontal member 3 is tightened from both ends and the two legs 2 are tightly joined together in the direction of approaching each other, when the distance between the two legs 2 is large. However, the joined state between the legs 2 can be stabilized, and the top plate 1 can be stably supported by the legs 2.

Further, as in the above-mentioned embodiment, if the opening width of the concave engaging portion 16 provided on the lower surface 1a of the top plate 1 is gradually narrowed at the portion located inside the top plate 1, the legs 2 can be set. When they are brought close to each other, the convex engaging portion 23 of the leg 2 and the concave engaging portion of the top plate 1
It is possible to make the engagement state with 16 tight, and to prevent rattling from occurring at such places.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and the legs, the horizontal members, and the like may be as follows. Note that the portions corresponding to the above-mentioned embodiment are denoted by the same reference numerals in each drawing, and the description thereof will be omitted.

In the leg 2 shown in FIG. 8, the support arm 21 is formed in a dogleg shape, and the fall prevention leg 22 is formed in a letter shape.

The leg 2 shown in FIG. 9 includes a support arm 21 and a fall prevention leg.
Each 22 is formed in a letter shape, and the whole is H-shaped.

The horizontal member 3 shown in FIG. 10 is formed by fixing metal reinforcing members 35 having insertion holes 35a in both ends of the horizontal member main body 31 by spot welding, CO ₂ welding or pressing. . C
In the case of O ₂ welding, the horizontal member main body 31 is provided with a hole reaching the reinforcing member 35 and then welded. When the horizontal member 3 is configured in this way, a long rod-shaped bolt 36 that penetrates the through hole 21b of the leg 2 and the insertion hole 35a of the reinforcing member 35,
With the nut 37 screwed to the threaded portion, the legs 2 are tightly joined to each other with the horizontal member 3 interposed therebetween in a direction toward each other.

EFFECTS OF THE INVENTION Since the present invention is configured as described above, the top plate and the legs can be easily and reliably joined together, and a plurality of inserts for directly joining the top plate and the legs together. The nut and the bolt to be screwed with each insert nut can be eliminated.

Further, a metal frame member having a concave engaging portion is arranged on the peripheral edge of the top plate, and a support arm extending toward the peripheral edge of the top plate is provided on the leg, and the concave arm engaging portion of the top plate is provided on the supporting arm. In the case of providing a convex engaging portion that engages with, it is possible to enhance the storage efficiency when stacking the top plates and to effectively increase the joint strength between the top plate and the legs. The top plate can be stably supported.

Furthermore, when the legs are tightened in a direction in which they are close to each other by interposing a horizontal member between the legs, even when the top plate has a long lateral dimension, it is possible to stabilize the joined state between the legs, The top plate can be stably supported by the legs.

[Brief description of drawings]

1 to 7 show an embodiment of the present invention, FIG. 1 is an exploded perspective view of essential parts, FIG. 2 is an exploded view of a partial cross section, and FIG.
The figure is a bottom view of the concave engaging portion, FIG. 4 is a vertical cross-sectional view of the cross member, FIG. 5 is a side view of the holder before attachment, and FIGS. 6 and 7 are operation explanatory views. FIGS. 8 to 10 show other embodiments of the present invention respectively. FIG. 8 is a perspective view of a leg, FIG. 9 is a perspective view of the leg, and FIG. 10 is a cross member corresponding to FIG. FIG. 1-top plate, 1a-bottom surface 2-leg, 3-horizontal frame material 11-frame member, 11b-bottom surface 16-concave engagement part, 21-support arm 21a-top surface, 23 ...... Convex engagement part

Claims (4)

(57) [Claims] 1. A desk comprising a top plate and a pair of legs for supporting the top plate, wherein the top plate has a concave engaging portion or a convex engaging portion on a lower surface thereof. , Each leg is provided with a convex engaging portion or a concave engaging portion on the upper surface, and the convex engaging portion or the concave engaging portion of the leg is replaced with the concave engaging portion or the convex engaging portion of the top plate. A desk characterized in that the legs are engaged with each other and the legs are tightly joined together in a direction toward each other. 2. A top plate having a metal frame member arranged at the peripheral edge thereof, and a concave engaging portion is formed on the lower surface of the frame member. Desk. 3. A leg having a support arm extending toward a peripheral edge of a top plate at an upper end portion thereof, and a convex engagement for engaging with a concave engagement portion of the top plate at both end sides of an upper surface of the support arm. The desk according to claim 2, wherein the portion is provided so as to project. 4. A cross member is interposed between both legs, and both legs are tightly joined together in a direction toward each other.
Or the desk described in 3.