JPH0767409B2 - desk - Google Patents

Description

TECHNICAL FIELD The present invention relates to a desk in which left and right legs support both ends of a top plate.

[Prior Art] Conventionally, as this type of desk, there is known a desk in which left and right legs, which are also referred to as side plates, are joined by a front panel and the like, and a top plate is installed between the upper ends thereof.

[Problems to be Solved by the Invention] With such a configuration, however, the displacement of the legs in the tilting direction can be prevented mainly by the front panel, and the displacement of the legs in the horizontal turning direction is It can be restrained mainly by the top plate. However, with this one alone,
If the front panel and top plate are not very rigid, when the desk is lifted from the floor due to layout changes, etc., the left and right legs tend to distort so that they twist around the horizontal axis. There is.

In particular, when supporting the top plate so that it can slide back and forth with respect to the legs, it becomes difficult to increase the rigidity of the joint portion between the legs and the top plate. There is a problem that the torsional deformation becomes particularly remarkable.

An object of the present invention is to rationally solve the above problems.

[Means for Solving the Problems] The present invention adopts the following configuration in order to achieve such an object.

That is, the desk according to the present invention is one in which the left and right legs are connected by a connecting structure, and the connecting structure is
An upper cross member having a U-shaped cross section having a pair of standing walls and a bottom wall, and a U-shaped cross section having a pair of standing walls and a bottom wall, the upper sides of both standing walls being the above-mentioned. It is characterized in that it comprises a lower horizontal member which is rigidly connected to both standing walls of the upper horizontal member.

The upper horizontal member and the lower horizontal member may be joined to each other by joining the upper sides of both standing walls of the lower horizontal member to substantially the entire area of both standing walls of the upper horizontal member and rigidly connecting them by welding. Alternatively, the upper sides of both standing walls of the lower horizontal member may be attached to the lower ends of both standing walls of the upper horizontal member and rigidly connected by welding.

The upper horizontal member has a gutter shape that opens upward,
The inside can be used as a wiring insertion space. In this case, in order to allow the wires to be smoothly introduced into the wire insertion space from the adjacent desk or the like, it is preferable to provide the leg with a wire insertion window communicating with the wire insertion space. When the inside of the upper horizontal member is used as a wiring insertion space, it is preferable to provide a wiring insertion slit for communicating the wiring insertion space with the top plate. Therefore, it is preferable that the wiring insertion slit be closed by an openable lid or hidden by an elastically deformable tongue. In order to effectively use the space formed between the bottom wall of the upper horizontal member and the bottom wall of the lower horizontal member, a through hole should be partially provided in the bottom wall of the upper horizontal member. Is good.

In order to be able to guide the wiring erected from the floor to the wiring insertion space without significantly reducing the strength of the connection structure, the through hole of the upper horizontal member in the bottom wall of the lower horizontal member is provided. It is preferable to provide a through hole for raising the wiring at a position not facing the above. If you want to be able to smoothly guide the start-up wiring from the floor to the wiring insertion space, connect the through hole of the upper horizontal member and the through hole of the lower horizontal member with a pipe member that is inclined diagonally. It is preferable to keep it.
In this case, if you want to further strengthen the connection structure,
It is preferable that the bottom wall of the upper horizontal member and the bottom wall of the lower horizontal member are rigidly connected by the pipe member.

When it is desired to use the inside of the upper horizontal member as a storage space for storing files and the like, the top plate is provided slidably in the front-back direction with respect to the legs, and the inside of the upper horizontal member can be opened upward. It is desirable to do so. In this case, in order to ensure the smooth operation of the top plate, it is preferable to support the top plate on the legs via the ball suspension.

The legs can be made of various materials such as wood, steel, or synthetic resin.

[Operation] With such a structure, since the upper horizontal member of the connection structure has a gutter shape with an upward opening, the inside thereof is a storage space for storing a wiring insertion space and files. It can be appropriately used as a space or the like.

Moreover, the entire connecting structure is not just a gutter-shaped one, but a bottom wall of the upper horizontal member and both standing walls of the lower horizontal member,
The bottom wall of the lower horizontal member constitutes a pipe structure. Therefore, compared with the gutter-shaped horizontal member, it exhibits much higher strength against twisting around the horizontal axis, and it is possible to effectively increase the twisting rigidity of the entire desk.

In addition, if the bottom wall of the upper horizontal member is completely removed, the entire structure will become a gutter-shaped one. Although the whole will be easily twisted while being displaced, if only a partial through hole is provided in the bottom wall of the upper horizontal member,
The remaining portion of the bottom wall suppresses the anti-plane displacement of the upright walls facing each other, thus maintaining the structure as a pipe. Therefore, it is possible to utilize the internal space of the lower horizontal member without significantly reducing the torsional rigidity.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.

In this desk, as shown in FIGS. 1 and 2, left and right legs 1 are connected by a connecting structure 2, and a top plate 3 and an auxiliary top plate 4 are installed between the upper ends of the legs 1. At the same time, the front panel 5 is provided between the edges on the non-use side.

The leg body 1 is, for example, a plate-shaped wooden body, and the joint structure of each leg body 1, the top plate 3, the auxiliary top plate 4, and the front panel 5 is a dowel or a bracket. The old one is used.

The connecting structure 2 includes a pair of standing walls 21a and a bottom wall 21b and an upper horizontal member 21 having a U-shaped cross section, and a pair of standing walls 22a and a bottom wall 22b each having a U-shaped cross section. It is made of sheet metal, and is provided with a lower horizontal member 22 in which the upper sides of the both standing walls 22a are rigidly connected to the both standing walls 21a of the upper standing wall 21. In this embodiment, both standing walls of the lower horizontal member 22 are
The upper side of 22a is attached to substantially the entire area of both standing walls 21a of the lower horizontal member 21 and is rigidly connected by spot welding. The difference between the vertical dimension of the upright wall 21a of the upper horizontal member 21 and the vertical dimension of the upright wall 22a of the lower horizontal member 22 is set to be substantially the same as the front-back width dimension of the lower horizontal member 22. is there. Therefore, the bottom wall 21b of the upper horizontal member 21, the standing wall 22a of the lower horizontal member 22, and the bottom wall 22b of the lower horizontal member 22 form a square pipe having a substantially square cross section. In addition, the standing wall 22a of the lower horizontal member 22
The left and right ends of the bottom wall 22b and the left and right ends of the bottom wall 22b are bent at right angles to form a mounting portion 22d, and a bolt insertion hole 22e is formed in the mounting portion 22d. And these bolt insertion holes 22e
The left and right legs 1 and the connecting structure 2 are joined to each other by screwing the bolts 23 inserted into the legs 1 into an embedded nut (not shown) fixedly embedded in the legs 1 and tightening them.

The upper horizontal member 21 has a gutter shape that opens upward as described above, and the inside thereof serves as the wiring insertion space 24. A wiring insertion window 11 is provided at a portion of the leg 1 corresponding to the wiring insertion space 24. The wiring insertion window 11 has a notched shape that opens upward and can be closed by a slide lid 12 that can be pulled out upward when not in use. In addition, the top plate 3 and the auxiliary top plate 4
A wiring insertion slit 31 for communicating the inside of the wiring insertion space 24 with the top of the top plate 3 is provided between and. The wiring insertion slit 31 is closed by a removable lid 32 when not in use. In addition, this wiring insertion slit 31
Elastically deformable tongue pieces (not shown) are provided on both front and rear opening edges of the cantilever, and the free ends of these tongue pieces are brought into contact with each other to close the wiring insertion slit 31. Good.
In this case, elastically deform this tongue to insert the wiring insertion space.
The wiring A in 24 can be led out to the top plate 3.

Further, in this embodiment, as shown in FIG. 3 and FIG. 4, through holes 21c and 21d are partially provided in the bottom wall 21b of the upper horizontal member 21, and the bottom wall of the upper horizontal member 21 is provided. 21b and lower horizontal member 22
The space 25 formed between the bottom wall 22b and the bottom wall 22b can be effectively used. That is, if such through holes 21c and 21d are provided, a bulky component such as the outlet B can be accommodated in the space 25, and the upper wiring insertion space 24 can be accommodated.
Can be used exclusively for inserting the wiring A.

Further, a wiring rising through hole 22c is provided at a position on the bottom wall 22b of the lower horizontal member 22 that does not face the through holes 21c and 21d of the upper horizontal member 21. The reason why the through hole 22c for raising the wiring is not provided directly below the through holes 21c and 21d is to prevent a partial decrease in strength of the connecting structure 2.
In this way, the through hole 21c of the upper horizontal member 21 and the through hole 22c of the lower horizontal member 22 are formed so that the rising wiring Aa from the floor F can be smoothly guided to the wiring insertion space 24. The pipe members 26 that are inclined obliquely communicate with each other. The pipe member 26 is made of metal, and the pipe member 26 rigidly connects the bottom wall 21b of the upper horizontal member 21 and the bottom wall 22b of the lower horizontal member 22. That is, the flange portions 26a provided on the upper and lower ends of the pipe member 26 are joined to the corresponding bottom walls 21b and 22b by welding. By doing so, it is possible to prevent the problem that the strength of the connecting structure 2 is reduced due to the provision of the through hole 22c for raising the wiring.

With the above-described structure, the upper horizontal member 21 of the connection structure 2 has a gutter shape that opens upward, so that the inside thereof can be appropriately and effectively used as the wiring insertion space 24. it can.

Moreover, the entire connecting structure 2 is not simply a gutter-shaped one, but the bottom wall 21b of the upper horizontal member 21, the standing walls 22a of the lower horizontal member 22, and the bottom wall 22b of the lower horizontal member 22. And form a pipe structure. Therefore, compared with a gutter-shaped horizontal member, it exhibits much higher strength against torsion about the horizontal axis (see arrows a and b in Fig. 2), and effectively improves the torsional rigidity of the entire desk. Is possible.

Furthermore, in the above embodiments, the case where the connecting structure is made to function as a duct for wiring insertion has been described. However, as in the connecting structure 102 shown in FIGS. 5 and 6, inside the upper horizontal member 121. Storage space for storing files, etc. 1
It can also function as 24. In this case, since the front-rear opening width of the upper horizontal member 121 needs to be made larger, the top plate 103 is provided slidably in the front-rear direction with respect to the leg body 101. Specifically, as shown in FIG. 6 in an enlarged manner, a step portion whose side edge side is thin is provided near the side edge 103a of the top plate 103. Side 1
The ball suspension 106 is interposed between 01a. The top plate 103 has a closed position (see an imaginary line in FIG. 5) in contact with the auxiliary top plate 104 and an open position (see a solid line in FIG. 5) that can fully open the storage space 124. In the above, an appropriate latch mechanism (not shown) for fixing the top plate 103 to each of the legs 101 is provided.

Further, the structure of the connecting structure is not limited to the embodiment described above, and may have a cross-sectional shape as shown in FIGS. 7 to 9, for example. That is, in the connection structure 202 shown in FIG. 7, the upper side of both standing walls 222a of the lower horizontal member 222 is attached to the lower ends of both standing walls 221a of the upper horizontal member 221 and is rigidly connected by welding. It was done.
Further, in this embodiment, the opening edge portion 221f of the upper horizontal member 221 is
Is formed into a small pipe shape, and its tip 221g is joined to the standing wall 221 by welding. Connection structure 302 shown in FIG.
The bottom wall 321b of the upper horizontal member 321 is formed in a flat plate shape, and the bottom wall 322b of the lower horizontal member 322 is curved in a semicircular cross section. The connecting structure 402 shown in FIG. 9 is one in which both the bottom wall 421b of the upper horizontal member 421 and the bottom wall 422b of the lower horizontal member 422 are curved in a semicircular cross section.

Furthermore, the legs are not limited to wood, but steel ones,
It may be made of synthetic resin. When the legs are made of synthetic resin, the shape of the connecting portion with the connecting structure can be relatively freely formed, and therefore, for example, the connecting structure shown in FIGS. 10 and 11 is used. The connection strength and the positioning accuracy can be increased by using 502. That is, in the connecting structure 502, a rib 522f having a V-shaped cross section is integrally provided on the mounting portion 522d so as to project. On the other hand, a tapered groove 513 corresponding to the rib 522f is formed on the inner surface of the leg 501. Then, the rib 522f of the connecting structure 502 is closely fitted to the taper groove 513 of the leg 501, and its mounting portion is attached.
Bolt 523 that penetrates the bolt insertion hole 522e of 522
The connection structure 502 and the leg body 5 are screwed together with an insert nut (not shown) fixed by being embedded in 1 and tightened.
It is designed to be able to firmly bond with 01. in this case,
If a strip-shaped metal holding plate 527 is interposed between the mounting portion 522d and the head portion 523a of the bolt 523, the mounting portion 522d can be tightly and tightly attached to the leg body 501. It should be noted that, as in the connecting structure 602 shown in FIG.
The rib 622f provided on the ridge may extend in the width direction of the attachment portion 622d.

EFFECTS OF THE INVENTION Since the present invention has the above-described configuration, the left and right side plates can be firmly and reasonably strongly connected.

That is, since the left and right side plates are not simply gutter-shaped but are connected by a connecting structure having a pipe structure, it is possible to effectively increase the rigidity of the entire desk,
In particular, the twist around the horizontal axis can be effectively suppressed. Therefore, even when the floor is lifted from the floor and the layout is changed, twisting of the entire desk can be effectively suppressed. Therefore, according to the present invention, it is possible to effectively improve the overall rigidity including the torsional rigidity by using the minimum necessary material, and it is possible to provide a lightweight and sturdy desk.

In addition, the connection structure is not a simple pipe, but a gutter-shaped space is formed in the upper part by the upper end horizontal member, and a space for inserting wires or storing files etc. in the space. Can be used as Therefore, a more rational design is possible as compared with a case where a structure for connecting the legs and a wiring insertion duct or the like are separately provided. Therefore, the number of parts can be reduced and the structure can be simplified.

[Brief description of drawings]

1 to 4 show one embodiment of the present invention, FIG. 1 is a side sectional view, FIG. 2 is a perspective view showing the inside without a top plate, and FIG. 3 is a front view of a connecting structure. A sectional view and FIG. 4 are plan views of the same. FIG. 5 is a side sectional view showing another embodiment of the present invention,
The drawing is an enlarged sectional view taken along line VI-VI in FIG. 7th
FIG. 8, FIG. 8 and FIG. 9 are schematic end views of a connecting structure showing another embodiment of the present invention. FIG. 10 is a cross-sectional view of a connecting structure showing still another embodiment of the present invention, and FIG.
The figure is an enlarged sectional view taken along line XI-XI in FIG. FIG. 12 is a cross-sectional view of a connecting structure showing still another embodiment of the present invention. DESCRIPTION OF SYMBOLS 1 ... Leg body, 2 ... Connection structure 3 ... Top plate, 11 ... Wiring insertion window 21 ... Upper horizontal member, 21a ... Standing wall 21b ... Bottom wall, 21c, 21d ... Through hole 22 ... Lower horizontal member, 22a ... Standing wall 22b ... Bottom wall 22c ... Through hole for starting wiring 24 ... Wiring insertion space, 26 ... Pipe member 31 ... Wiring insertion slit 32 ... Lid body, 101 ... Leg body 102 ... Connection structure, 103 ... Heaven Plate 106 ... Ball suspension 121 ... Upper horizontal member, 124 ... Storage space 202 ... Connection structure, 221 ... Upper horizontal member 221a ... Standing wall, 222 ... Lower horizontal member 222a ... Standing wall, 302 ... Connection structure 321 … Upper horizontal member, 321b… Bottom wall 322… Lower horizontal member, 322b… Bottom wall 402… Connection structure, 421… Upper horizontal member 421b… Bottom wall, 422… Lower horizontal member 422b… Bottom wall, 501 … Legs 502… Connection structure, 602… Connection structure

Claims (17)

[Claims] 1. A desk having left and right legs connected by a connecting structure, wherein the connecting structure has an upper horizontal cross section having a U-shaped cross section and having a pair of standing wall and bottom wall. And a lower horizontal member having a U-shaped cross section having a pair of standing walls and a bottom wall, and the upper side of both standing walls being rigidly connected to both standing walls of the upper horizontal member. A desk that is characterized by what has become. 2. The upper side of both standing walls of the lower horizontal member is attached to substantially the entire area of both standing walls of the upper horizontal member, and is rigidly connected by welding. Desk. 3. The upper side of both standing walls of the lower horizontal member is abutted against the lower ends of both standing walls of the upper horizontal member, and is rigidly connected by welding. Desk. 4. The desk according to claim 1, wherein the inside of the upper horizontal member is a wiring insertion space. 5. The desk according to claim 4, wherein the leg is provided with a wiring insertion window communicating with the wiring insertion space. 6. The desk according to claim 4, further comprising a wiring insertion slit for communicating the wiring insertion space with the top plate. 7. The desk according to claim 6, wherein the wiring insertion slit is closed by an openable / closable lid. 8. The desk according to claim 6, wherein the wiring insertion slit is closed by an elastically deformable tongue piece. 9. The desk according to claim 1, wherein a through hole is partially provided in the bottom wall of the upper horizontal member. 10. The desk according to claim 9, wherein a through hole for raising the wiring is provided at a position on the bottom wall of the lower horizontal member which does not face the through hole of the upper horizontal member. 11. The desk according to claim 10, wherein the through hole of the upper horizontal member and the through hole of the lower horizontal member are communicated with each other by an obliquely inclined pipe member. 12. A bottom wall of an upper cross member by a pipe member,
12. The desk according to claim 11, which is rigidly connected to the bottom wall of the lower horizontal member. 13. The desk according to claim 1, wherein a top plate is provided so as to be slidable in the front-rear direction with respect to the legs, and the inside of the upper horizontal member is a storage space that can be opened upward. 14. The desk according to claim 13, wherein the top plate is supported by the legs via a ball suspension. 15. The desk according to claim 1, wherein the legs are made of wood. 16. The desk according to claim 1, wherein the legs are made of steel. 17. The desk according to claim 1, wherein the legs are made of synthetic resin.