JPH03247312A - Desk - Google Patents

Abstract

PURPOSE:To reduce production cost not only by extreamely reducing the man-hours of production and assembly but also by doing without producing many kinds of parts, by a method wherein leg bodies are fitted to a top board through tapar-engaged parts and hook-engaged parts so as not to move obliquely, or before and behind, and are firmly connected to the border on the far side of the top board. CONSTITUTION:A top board 1 is formed in a flush structure with metallic plate parts. Each of leg bodies 2 rigidly fixes an arm 24 along the border on the far side of the top board, at the top part of the leg body. A taper-engaged part 3 has both a recessed tapper part 31 formed either on the border on the far side of the board or on the arm of the leg body, and a projected taper part 32 formed on the other thereof. When the leg body 2 is slid toward the side of the border to be used to the top board 1, the recessed taper part and the projected taper part are formed so as to be in close contact with each other. Hook-engaged parts 4 have both a pair of hooks, 4a, 4b formed on the upward surface of the leg body separately at a specified pitch, and a pair of hook holes, 42a to 42d, formed at positions, at each of which distances among the side border of the top board and the hook holes correspond respectively to one half times as long as the pitch, and one and one-half times as long as the pitch. After these hooks are inserted into these hook holes, the leg body is slid toward the side of the border to be used to the top board, and the hooks can thus be engaged with the hook holes.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] 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 to the support rails at multiple locations, the top plate is likely to warp or bend. Moreover, unless the left and right legs are firmly connected by a support or the like, it will be difficult to ensure the rigidity of the main body, and it will be impossible to ensure the supporting rigidity of the top plate.

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.

In addition, in offices, etc., many desks of the same standard are sometimes connected in the width direction, but in such cases, conventionally, the legs overlap with the adjacent parts of the desk, making it bulky, difficult to use, and wasteful. There is also the problem that it is difficult to align the top plate surfaces flush with each other.

The present invention aims to solve these problems at the same time.

[Means for Solving the Problems] In order to achieve the above objects, the present invention provides a structure in which the top plate can exhibit rigidity by itself, eliminating the need for reinforcement with support beams, and achieving such 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 a completely different idea from conventional ones.

That is, the desk according to the present invention includes a top plate, legs, a tapered engagement part, and a claw-shaped engagement part, and the top plate has metal parts on both the upper and lower sides of the frame. The legs have an upward surface that is joined to the bottom surface of the top plate, and an arm along the top edge of the top plate is attached to the upper end. The tapered engaging portion includes a concave tapered surface provided on one of the top edge of the top plate and the arm of the leg, and a convex tapered surface provided on the other. The concave tapered surface and the convex tapered surface are configured to come into close contact with each other by sliding the legs toward the use end with respect to the top plate, and the claw-shaped engagement portion A pair of bent claws spaced apart in the width direction and provided at a predetermined pitch on the upper surface of the leg, and a pair of bent claws provided on the lower surface of the top plate at a position where the distance to the side edge is equivalent to half pitch and 3/2 pitch. and a pair of hook holes, and the bent claws are engaged with the hook holes by inserting the bent claws into the hook holes and sliding the legs toward the use end with respect to the top plate. It is characterized in that the arm is tightly connected to the tip end edge of the top plate by a fastener in a state where each engaging portion is engaged.

In addition, instead of the claw-shaped engaging portions, a pair of hook holes are provided at a predetermined pitch on the upper surface of the legs and spaced apart in the width direction of the top plate, and a pair of hook holes are provided on the lower surface of the top plate up to the side edges. It shall be equipped with a bent claw provided at a distance equivalent to half a pitch,
The bending claw may be configured to engage with the hook hole by inserting the bending claw into the hook hole and sliding the leg toward the use end with respect to the top plate. This claw-shaped engagement part has a distance of 3/2 from the bottom surface of the top plate to the side edge.
It is also possible to further provide bent claws at positions corresponding to the pitch.

A suitable example of a concave tapered surface and a convex tapered surface is:
It is preferable to set the former in the groove and the latter on the protrusion.

A simple fastening device is one that has a screw hole fixedly provided on the top plate and allows a bolt passed through the arm to be screwed into the screw hole. More preferably, only one bolt is required for each arm.

[Function] With this configuration, the upper surface of one leg is fully attached to the lower surface of one side edge of the top plate,
In this state, by sliding the leg body toward the use end side with respect to the top plate, the claw-shaped engaging portion is formed at two locations in claim 1.3, and at one location in claim 2, with the bent claw and the hook hole. At the same time, the arm of the leg approaches the tip edge of the top plate, and the convex tapered surface of the tapered engagement part
It comes into contact with the concave tapered surface. In this state, when the arm is fastened to the top plate using a fastener, the convex tapered surface bites into the concave tapered surface and comes into close contact, and the arm is fixed to the top plate. Since the arms are rigidly attached to the legs, if the arms are strongly connected to the top plate, the legs cannot tilt relative to the top plate. Moreover, if the arm is fixed to the top edge of the top plate and the legs cannot move back and forth, the bending claws will not come out of the hook holes, so the lower surface of the top plate and the upper surface of the legs will no longer be separated. Then, by attaching the other leg to the other side edge of the top plate by a similar operation, the entire desk is finished with rigidity centered around the top plate.

Also, if you want to create a desk by placing multiple tops next to each other, attach one leg to one side edge of the top plate, and then attach the other leg to the other side edge. By partially attaching one half of the upward surface of the leg to the lower surface and sliding the leg in that state toward the use end with respect to the top plate, which claim can be solved based on the above-mentioned dimensional relationship? The claw-shaped engaging portion also allows engagement between the bent claw and the hook hole at one location. Therefore, the lower surface of one side edge of the next top plate is attached to the other part of the upper surface, and in this state, the legs are operated so that they can slide toward the use end side relative to the top plate. For example, this top plate can also achieve engagement between the bent claw and the hook hole at one location of the claw-shaped engagement portion.

As a result, the two top plates are attached to a common leg. In this state, the side edges of both boards are closely connected to each other on the upper surface of the legs, and the arms of the legs are strongly connected to at least one of the top plates, so that Tilting and back and forth movement are prohibited by the plate. In this way, the side edges of adjacent top plates are attached one after another to the common leg, in the same way as one side edge of the first top plate was attached to the other side edge of the last top plate. If the upper surface of the legs is attached to the entire surface of the desk, the entire desk will be finished as a rigid desk consisting of N top plates and N+1 legs.

[Example] Hereinafter, an example of the present invention will be described with reference to FIGS. 1 to 17.

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 3, the top plate 1 has a flush structure in which metal steel plates 12 and 13 are attached to both upper and lower surfaces of a frame 11. Specifically, the frame 11 is made by joining a frame member 11a on the tip A side, a frame member 11b on the use end B side, and left and right side frame members 11c, each having a U-shaped cross section and opening inward. A honeycomb-shaped paper core 14 is disposed inside the core. A steel plate 12.1 is attached to the upper and lower surfaces of this frame 11 and paper core 14 via an adhesive.
3 are attached respectively, and these frame bodies 11, steel plates 12 and 13, and paper core 14 are joined by pressure bonding. In addition, a steel material 15 is fixedly installed on the distal end surface 11a1 of the distal end side frame member 11a via a welded joint 15b.
This steel material 15 constitutes the tip edge 1a of the top plate 1. A melamine decorative board 16 is adhered to the upper surface of the upper steel plate 12.

As shown in FIGS. 1, 4, and 5, the leg body 2 includes a base material 21 having an adjuster 21a, a support 22 erected at the tip of the base material 21, and a support 22 of the support 22. A support arm 23 extending from the upper end toward the use end B side is provided, and a plurality of spacers 23b are fixedly provided on an upward surface 23a formed on the support arm 23. The top plate 1 can be supported by bringing the lower surface of the top plate 1 into close contact with the top plate 1. An arm 24 that extends along the tip edge 1a of the top plate 1 is closed at the upper end of the leg 2 on the tip A side. In other words, the leg 2R on the right side when viewed from the use end B side.
The arm 24R attached to the base end has a mounting portion 24a.
This mounting part 24a is rigidly attached to the tip surfaces of the support column 22 and the support arm 23 by welding, and in this state, the whole is horizontally moved to the left when viewed from the use end B side. It is being extended. Also, the leg 2 on the left side when viewed from the use end B side. Arm 24. attached to the arm 24. is the arm 24
It is made of steel and integrally has a mounting part 24a at a position symmetrical to R, and the mounting part 24a is rigidly attached to the tip surface of the support column 22 and support arm 23 by welding, and in this state the whole is used at the end of use. It extends horizontally to the right when viewed from the B side.

As shown in FIGS. 1 and 6, the tapered engaging portion 3 includes a concave tapered surface 31 provided on the tip edge 1a of the top plate 1 and a leg body 2.
and a convex tapered surface 32 provided on the arm 24. Specifically, as shown in FIGS. 7 to 9, the top plate 1
A V-shaped groove 15c is recessed in the steel material 15, and the concave tapered surface 31 is set on the slope of the V-shaped groove 15c.

Further, as shown in FIGS. 10 to 12, a protrusion 24b having a trapezoidal cross section is provided on the surface of the arm 24 on the use end B side, and the convex tapered surface 32 is formed on the protrusion 24b. It is set on a slope. These tapered surfaces 31 and 32 are arranged at the same height position when the top plate 1 is placed on the legs 2, and from this state, the legs 2 are placed on the use end B side with respect to the top plate 1. By sliding the slopes together, the slopes can be fitted together.

As shown in FIGS. 2, 4, 5, 13, and 14, the claw-shaped engaging portion 4 is connected to the leg 2R and the right edge JR of the top plate. The engagement state of the legs 2L and the engagement state of the legs 2L and the left edge IL of the top plate are also shown), the legs 2R (
2L) Bent molds 41a and 41b provided on the upward surface 23a
(41c, 41d) and hook holes 42a to 42d provided on the lower surface of the top plate 1. Specifically, leg body 2
Metal fittings 43 are fixed to the upper surface 23a of 8 (2L) at two places, and bent molds 41a, 41b (41c, 41d) bent toward the use end B side are attached to these metal fittings 43 at a predetermined pitch. It is protruded at d. In addition, the side frame material 11c forming the frame 11 has a distance of d/2 to the side edge IR (IL) of the top plate.
Hook hole 42a (42d) is located at 3d/
Hook holes 42b (42c) are formed in the shape of elongated holes at two positions. Openings 13a are punched out in the lower steel material 13 in order to expose these hook holes 42a to 42d to the lower surface of the top plate 1.
, 41b (41c, 41d) are connected to the hook holes 42, respectively.
a, 42b (42c, 42d) into the inner space of the top plate 1, and from this position, insert the legs 2R (2L) into the top plate 1.
By sliding the bending molds 41a, 41b (41c, 41d) toward the use end B side, the tips of the bent molds 41a, 41b (41c, 41d) can be attached to the inner surface of the side frame member 11C.

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

Furthermore, as shown in FIGS. 1, 6, 13, and 14, each arm 24R, 24t is used as a fastening tool in a state in which both image matching portions 3.4 are engaged. A single bolt 5 is used to tightly connect the tip edge 1a of the top plate 1. For this purpose, the arm 24H has one bolt insertion hole 24c, and the arm 24T has two bolt insertion holes 24c spaced apart from each other by a distance d.

Arm 24. One of the two bolt insertion holes 24c is not normally used. Further, the steel material 15 of the top plate 1 is provided with a screw hole 15a that can communicate with the bolt insertion hole 24C at the mounting position. And both tapered surfaces 31.3
The arm 24R124L can be firmly attached to the tip edge 1a of the top plate 1 by inserting the bolt 5 through the bolt insertion hole 24c and screwing the bolt 5 into the screw hole 15a with the arms 24R and 2 in close contact with each other. .

Therefore, a desk having such a configuration can be assembled and disassembled extremely easily.

That is, if the leg 2R is attached to the right side edge IR of the top plate 1 first, then the upper surface 2 of the leg 2R is attached to the lower surface of the leg 2R.
3a on the entire surface, and in this state, attach the legs 2R to the top plate 1.
13 and 14, the bent shapes 41a and 41b of the claw-shaped engaging portion 4 engage with the hook holes 42a and 42b, and the leg body The arm 24R of 2R is the tip edge 1a of the top plate 1
, and the convex tapered surface 32 of the tapered engaging portion 3 comes into contact with the concave tapered surface 31. In this state, when the bolt 5 is inserted into the bolt insertion hole 24c of the arm 24R and tightened to the top plate 1, the convex tapered surface 32 bites into the concave tapered surface 31 and comes into close contact, and the arm 24R is attached to the top plate. Fixed to 1. Since the arm 24R is rigidly attached to the leg 2R, when the arm 24R is strongly connected to the top plate 1, the leg 2
R cannot tilt relative to the top plate 1. Moreover,
If the arm 24R is fixed to the tip edge 1a of the top plate 1 so that the leg 2R cannot move back and forth, the bent type 41a, 41
b will not come off from the hook holes 42a, 42b, so the lower surface of the top plate 1 and the upward surface 23a of the leg 2R will not be separated from each other. Next, the upper surface 23a of the leg 2L is fully attached to the lower surface of the left edge IL of the top plate 1, and in this state, the leg 2 is attached to the use end B of the top plate 1.
When slid to the side, the bent shape 41C141d of the claw-shaped engaging portion 4 engages with the hook hole 42c, as shown in parentheses in FIG.
, 42d, and the legs 2. arm 24.
approaches the tip edge 1a of the top plate 1, and the convex tapered surface 32 of the tapered engaging portion 3 comes into contact with the concave tapered surface 31. In this state, the arm 24. Bolt insertion hole 24 on the normal use side of
When the bolt 5 is inserted into the top plate 1 and tightened to the top plate 1, the convex tapered surface 32 bites into the concave tapered surface 31, and as a result, the arm 24L is fixed to the top plate 1, and as a result, the leg body 2
L will be firmly attached to the top plate 1.

In this way, this desk has a structure in which the top plate 1 can exhibit rigidity by itself, and uses the top plate 1 as a structural base.
Since the legs 2R and 2L can be attached to the top plate 1 through the tapered engagement part 3 and the claw-shaped engagement part 4 without being able to tilt or move back and forth, only two bolts 5 are used. Sufficient strength can be obtained, and there is no need to increase rigidity by using a large number of bolts as in the past. Therefore, compared to the conventional desk, the number of man-hours involved in assembling and disassembling the desk shown in the figure is drastically reduced, and it can be put into practical use as an innovative desk with extremely little wobbling.

Further, according to such a structure, it is easy to connect N top plates to form a desk as shown in FIG. 15. That is, first, in the same manner as above, the first top plate 1□
Attach the leg body IR to the right side edge IR. Next, the top plate 11
As shown in FIGS. 16 and 17, the right half 23R of the upward surface 23a of the leg 2L is partially attached to the left side edge IL of the leg 2L, and in this state, the right half 23R of the upward surface 23a of the leg 2L is attached to the lower surface of the left edge IL of the leg 2L. When it is slid toward the use end B side with respect to the top plate 1U, the bending die 41c will engage with the hook hole 42d side, unlike the above case, due to the dimensional relationship described above. Therefore, the lower surface at the right edge IR of the next top plate 12 is the left half 23L of the upper surface 23a.
, and in this state, if the legs 2L are operated so as to be able to slide toward the use end B side relative to the top plate 12,
The hook hole 42a of this top plate 12 can be engaged with the remaining bending mold 41d. As a result, two top plates 10.
1□ will be attached to each half of the common leg 2L. In this state, the left edge 1 of the top plate 11. and the right side edge IR of the top plate 12 are closely joined on the upper surface 23 of the leg 2L, and the arm 24. of the leg 2L is closely joined. is the arm 24. By inserting the bolt 5 into the bolt insertion hole 24C on the side that is not normally used and tightening it, the leg 2. Tilting and forward/backward movement of is prohibited. In this way, the top plate 1
The left edge IL of 1-1 and the right edge of the top plate 1° are connected to the leg 2. 1. Attach the left side edge of the last top plate IN. If the legs 2L are attached in the same manner as shown in FIG.
The result is a rigid desk consisting of 2L legs.

Therefore, the number of legs 2 is approximately half that of the conventional one, reducing costs and installation man-hours, and since the legs 2 are not bulky in the adjacent part, the leg space is increased and the desk is easy to use. I can do it. Moreover, the adjacent top plate 1m-1
, 1m are common legs 2. Since it is attached to the upper surface 23a of the top plate, the top plate surface can be easily aligned even when the height is adjusted, and it is possible to improve the uniform appearance and usability as a whole.

In addition, the claw-shaped engaging part has a pair of hook holes spaced apart in the width direction of the top plate at a predetermined pitch on the upper surface of the legs, and the distance to the side edge on the bottom surface of the top plate is equivalent to half a pitch. By providing a bending mold at a certain position, the same effect as in the above embodiment can be obtained.

This claw-shaped engaging portion may be further provided with a bent shape at a position on the lower surface of the top plate and the distance to the side edge is equivalent to 3/2 pitch. Further, in the above embodiment, the steel material 15 is rigidly attached to the tip edge 1a of the top plate 1 via the welded joint 15b.
Although the concave tapered surface 31 is set in FIG. 18, it is also possible to integrally form the concave tapered surface 131 with the frame 111. In addition, the tapered engagement part is
As shown in FIG. 19, the convex tapered surface 232 is
The concave tapered surface 231 may be formed in a groove provided in the arm 224. In addition, the configuration of each part is not limited to the illustrated example, and various modifications can be made without departing from the spirit of the present invention.

[Effects of the Invention] As described above, the desk according to the present invention has a top plate that has a structure that can exhibit rigidity by itself, eliminates the need for reinforcement by supports, and uses the top plate with such rigidity as a structural base. , Attach the legs to this top plate through the tapered engagement portion and the claw-shaped engagement portion so as not to tilt or move back and forth, and in this state, tighten the legs to the tip edge of the top plate using the fasteners. Since it is composed of only one piece, the number of man-hours for production and assembly is drastically reduced compared to the conventional method, and only a small number of parts are required, leading to lower production costs and extremely less wobbling.

In addition, according to this structure, when the top plates are installed consecutively, a common leg can be attached across the left and right top plates, reducing the number of legs and reducing costs and manufacturing/assembly man-hours. This makes it possible to improve comfort by increasing foot space. Moreover, in this case, since the top plates attached to the common upward surface are naturally flush, it is possible to obtain the effect of completely eliminating the need for complicated adjustment operations such as adjusters.

[Brief explanation of drawings]

1 to 17 show an embodiment of the present invention, FIG. 1 is an overall perspective view, FIG. 2 is a plan sectional view of the top plate with the paper core omitted, and FIG. 3 is - ■ Line sectional view, Figure 4 is a plan view of the leg, Figure 5 is a front view of the same, Figure 6 is an enlarged view of the tapered engagement part, Figure 7 is a steel material provided with a concave tapered surface. A partial plan view, FIG. 8 is a front view of the same, FIG. 9 is a left side view of FIG. 8, FIG. 10 is a plan view of the arm provided with a convex tapered surface, and FIG. 11 is a front view of the same. Figure 12 is the first
1 is a right side view of FIG. 1, FIG. 13 is a partial plan cross-sectional view of the top plate showing the claw-shaped engaging portion, and FIG. 14 is the XIV in FIG. 13.
15 and 16 are partial perspective views showing other modes of use of the same embodiment, and FIG. 17 is a partial plan sectional view showing an adjacent portion of the top plate. Also, the first
8 is a partial sectional view showing a frame according to another embodiment, No. 19
The figure is a side view showing a tapered engagement portion according to still another embodiment. 1.11~IN, 201...Top plate 1a...Tip edge 2.2R, 2L...Leg body 3...Taper engagement part 4...Claw-shaped engagement part 5...Stop Attachment (bolt) 11.111... Frame 12.13... Metal plate (steel plate) 15a... Screw hole 15c... V-shaped groove 23a... Upward surface 24.24R, 24L. ...Arm 24b...Protrusion 31.131.231...Concave tapered surface 32.232
...Convex tapered surfaces 41a, 41b, 41C, 41d - bent claws 42a, 42
b, 42c, 42d-=Hook hole A...Tip B...Used end

Claims (1)

[Claims] 1. A desk comprising a top plate, legs, a tapered engaging part, and a claw-shaped engaging part, the top plate having metal plates on both upper and lower surfaces of the frame. The legs have an upward surface that is joined to the lower surface of the top plate, and an arm that is rigidly attached to the upper end along the tip edge of the top plate. The tapered engagement portion includes a concave tapered surface provided on either one of the top edge of the top plate and the arm of the leg body, and a convex tapered surface provided on the other side, The concave tapered surface and the convex tapered surface are configured to come into close contact with each other by sliding the legs toward the use end side with respect to the top plate, and the claw-shaped engaging portion is configured to fit the width of the top plate. A pair of bent claws are provided at a predetermined pitch on the upper surface of the leg and spaced apart in the direction, and a pair of bent claws are provided on the lower surface of the top plate at a position where the distance to the side edge is equivalent to half pitch and 3/2 pitch. The device is equipped with a pair of hook holes, and the bent claws are engaged with the hook holes by inserting the bent claws into the hook holes and sliding the legs toward the use end with respect to the top plate. What is claimed is: 1. A desk, characterized in that the arm is tightly connected to the tip end edge of the top plate by a fastener in a state in which each engaging portion is engaged. 2. A desk comprising a top plate, legs, a tapered engaging part, and a claw-shaped engaging part, wherein the top plate is formed by attaching metal plates to both the upper and lower sides of the frame body. It has a flush structure, and the leg body has an upward surface that is joined to the lower surface of the top plate, and has an arm rigidly installed at the upper end along the tip edge of the top plate, and has a tapered engagement. The joining part has a concave tapered surface provided on either the top edge of the top plate or the arm of the leg body, and a convex tapered surface provided on the other side, so that the leg body can be attached to the top plate. The concave tapered surface and the convex tapered surface are configured to come into close contact with each other by sliding toward the use end side, and the claw-shaped engaging portions are spaced apart in the width direction of the top plate. It is equipped with a pair of hook holes provided at a predetermined pitch on the upper surface of the body, and bent claws provided on the lower surface of the top plate at a position where the distance to the side edge is equivalent to half a pitch, The bent claw is configured to be able to engage with the hook hole by inserting the bent claw into the hook hole and sliding the leg body toward the use end side with respect to the top plate, and each engaging portion is A desk characterized in that, in an engaged state, the arm is tightly connected to the tip end edge of the top plate by a fastener. 3. The desk according to claim 2, further comprising a bending claw provided on the lower surface of the top plate at a position where the distance to the side edge is equivalent to 3/2 pitch. 4. A claim characterized in that the concave tapered surface is formed in a V-shaped groove provided on the tip edge of the top plate, and the convex tapered surface is formed in a protrusion provided on the arm. Desk according to item 1, 2 or 3. 5. Claim 1, wherein the convex tapered surface is formed on a protrusion provided on the tip edge of the top plate, and the concave tapered surface is formed in a groove provided on the arm. Desk described in 2 or 3. 6. Claim 1, wherein the fastener is a bolt that passes through the arm and is screwed into a screw hole provided on the top plate side.
Desk according to 2, 3, 4 or 5. 7. The desk according to claim 6, wherein each arm is fixed to the top plate by one bolt.