JP2009030810A - Desk - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce working burden on work for fixing (connecting) a connector to the upper ends of a plurality of leg columns and work for fixing (connecting) lateral beams to the connector. <P>SOLUTION: The leg columns 3 have sectionally hollow cylinder portions. On a base block 41 of the connector 4, horizontal arm portions are integrally formed via which the ends of the lateral beams 5a are connected to each other. The base block 41 has an upper part supporting portion 42 to be fixed to the cylinder portions at their upper end face side with bolts 45 and machine screws 46. The bolts 45 and the machine screws 46 are fastened downward to machine screw pockets of the leg columns 3. Boss portions 48 are protruded upward from the bottoms of the pair of horizontal arm portions 47 formed on the base block 41 in upward opening grooved shape opening with mutual 90° turn in a top view. A round hole having the same sectional shape as a boss portion 48 is formed in the lower face of each lateral beam 5a, and each lateral beam 5a fitted downward therein is screwed and fixed from its upper face side to the boss portion 48 with the machine screw 49. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a desk structure used for office work for performing various desk work such as writing or computer operation.

  Conventionally, this type of desk structure has, for example, a horizontal insertion rod extending in the direction of 90 degrees in a plan view in a corner block attached to each upper end surface of four leg posts as disclosed in Patent Document 1. Are formed integrally, and the ends of the hollow horizontal beams made of aluminum extruded material extending in the horizontal direction are fitted on the horizontal insertion rods, and then the horizontal insertion rods and the horizontal beams are fixed with fastening devices (bolts). Fix horizontally. As a result, it is disclosed that each upper end of the four leg struts forms a square frame in plan view and is fixed to the lower surface of the tabletop plate from the side beam side via an upward fastening tool (bolt). ing.

In that case, the corner block made of zinc die-casting is integrally provided with a vertical insertion rod that fits into the hollow cylinder of the leg strut made of aluminum extrusion material. By fixing the side wall of the leg column and the vertical insertion rod with a screw (bolt), the corner block is fixed so as not to come off.
Japanese Patent Publication No. 07-49012

  However, in the desk disclosed in Patent Document 1, since the upper end surface of the leg support and the corner block are not fixed with vertical screws, when a lateral load such as a horizontal load is applied to the tabletop, the tabletop There was a problem that the upper end of the leg column was easily bent so that the gap between the lower surface of the plate and the upper end surface of the leg column was opened, and the resistance against the lateral strength (fixing strength between the corner block and the leg column) was weak. . In addition, when fixing (connecting) the leg struts, corner blocks, and cross beams, the mounting direction of the bolts and screws to the mating member was horizontal, so that the height below the operator's waist The operator must perform a corner block or cross beam fixing operation (connection operation) in a posture in which the upper end portion of the leg column is bent or the knee is bent greatly (or the knee is attached to the floor). Therefore, when assembling a large number of desks, there is a problem that the work load increases.

  An object of the present invention is to solve the above-described conventional problems.

  In order to achieve the above technical problem, the invention described in claim 1 includes a tabletop plate, a horizontal beam and a plurality of leg columns supporting the tabletop plate, an upper surface of each leg column, a tabletop plate, In a desk provided with a connecting body for connecting the cross beam, a base block of the connecting body is fixed to the upper end of each leg support with a fastening tool from above, and the base block is directed upward. An open horizontal arm portion is integrally formed, a boss portion is formed to protrude upward from the bottom portion of the horizontal arm portion, and a round hole fitted to the boss portion is formed on the lower surface side of the end portion of the horizontal beam. The transverse beam is fixed to the boss portion with a fastening tool from the upper surface thereof, and a plurality of screws for fastening screws to embedded nuts opening on the lower surface of the tabletop plate are fixed to the base block. Screw mounting portions are formed, and the bead is formed from the lower surface side of each screw mounting portion. And it is obtained by fastening fixed to the embedded nut of the lower surface of the desk top panel.

  As described above, according to the first aspect of the present invention, the base block of the coupling body is fixed to the upper end of each leg column from above with a fastening tool, and the base block is horizontally open upward. The arm part is formed integrally, the boss part is formed to project upward from the bottom part of the horizontal arm part, and a round hole fitted to the boss part is provided on the lower surface side of the end part of the transverse beam, Since the cross beam is configured to be fixed to the boss portion from the upper surface thereof with a fastening tool, the connecting body is fixed to the upper ends of the plurality of leg posts (connecting work) and the cross beam is fixed to the connecting body (connecting). Work) can be performed while the worker is standing. Therefore, the operator does not need to bend or take a posture in which the knee is greatly bent (or the knee is attached to the floor), and the work load can be reduced even when many desks are assembled.

  According to the first aspect of the present invention, the base block is formed with a plurality of screw attachment portions for fastening screws to embedded nuts that open to the lower surface of the tabletop plate, Since the screw is fastened and fixed to the embedded nut on the lower surface of the tabletop plate from the lower surface side of each screw mounting portion, the effect that the fixing strength between the tabletop plate and the leg column is greatly improved. Play.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings. 1 to 9 show a first embodiment, FIG. 1 is an overall front view of a desk, FIG. 2 is a cutaway perspective view showing one corner of the desk, FIG. 3 is an exploded perspective view of components, and FIG. Fig. 5 is a plan view of the coupling body of the first embodiment, Fig. 5 is a view taken along line VV in Fig. 4, Fig. 6 is a perspective view of the coupling body, Fig. 7 is an enlarged side sectional view of a principal part. 8 is an enlarged sectional view taken along line VIII-VIII in FIG. 7, FIG. 9 is an enlarged sectional view taken along line IX-IX in FIG. 5, FIG. 10 is a perspective view of the spacer body, and FIG. FIG. 12 is an exploded perspective view of components according to the second embodiment, FIG. 13 is an exploded perspective view of a connecting body and leg posts according to the second embodiment, and FIG. 14 is a second embodiment of the connecting body. 15 is a plan view of the coupling body, FIG. 16 is a partially cut-away bottom view of the coupling body, FIG. 17 is a cross-sectional view taken along line XVII-XVII in FIG. 16, and FIG. Side sectional view, FIG. FIG. 20 is an enlarged side cross-sectional view taken along the line XIX-XIX in FIG. 18, and FIG. 20 is a perspective view showing an attached state of the leg strut and the coupling body.

  The desk 1 in the first embodiment includes a desk top plate 2 that is substantially rectangular in plan view, leg posts 3 that support the four corners of the lower surface of the table top plate 2, and a frame for supporting and fixing the table top plate 2. A body 5 and a connection body 4 that is fixed to the upper ends of the four leg posts 3 and connects the tabletop 2 and the frame body are provided. The frame 5 is formed of a hollow horizontal beam 5a having a substantially rectangular cross section. In the embodiment, the tabletop 2 is wooden.

  The leg support 3 is an aluminum extruded material, and the outer periphery of each leg support 3 is formed in a substantially triangular shape having one round corner 3a and two acute angles 3b, 3b in a plane cross section. Moreover, it is divided into a hollow cylindrical portion 32 and a vertically long concave groove 33 through a partition plate portion 31 that connects the two acute angle portions 3b, 3b. In addition, on the round corner 3a side and the partition plate 31 side of the cylindrical portion 32, Ω-shaped screw pockets 34 and 35 in plan view (refer to FIG. 8, corresponding to the engaging protrusions in the claims). Are integrally formed.

  As shown in FIGS. 3 to 7, the connecting body 4 is an integrally formed die-cast member made of aluminum or the like. As shown in FIG. 4, the base block 41 of the connection body 4 is reinforced by standing up a plurality of ribs 41 b on a bottom plate 41 a that is substantially pentagonal in plan view.

  The base block 41 is in contact with the upper support portion 42 having substantially the same shape (triangle) as the planar shape of the leg column 3, and the acute angle portions 3 b and 3 b of the leg column 3, and a part thereof is formed in the concave groove 33. The side support part 43 to be fitted is integrally formed. The lower surface of the upper support portion 42 is formed so as to be able to contact the upper end surface (flat surface) of the leg support 3 exactly, and the lower surface of the upper support portion 42 is connected to the upper end portion of the cylindrical portion 32 of the leg support 3. A positioning block 44 that can be fitted from above is formed to project. Further, the upper support portion 42 is attached so that a bolt 45 and a screw 46 with a hexagonal hole as a fastening device for fixing with screws to the screw pockets 34 and 35 in the leg support 3 can be inserted from above. Holes 45a and 46a are formed (see FIGS. 4 to 7).

  A part of the upper support part 42 (the rounded corner 3a side of the leg support 3) is stepped down with respect to the base block 41, and therefore, this part has a gap with respect to the lower surface of the corner of the tabletop plate 2. (See FIGS. 1 and 2).

  On the other hand, the base block 41 has a pair of upward-opening groove-like cross beam support portions (horizontal arm portions) 47 that open in opposite directions to each other on the side opposite to the upper support portion 42 in plan view. Is formed. Then, the end portions of the horizontal beams 5a each having a hollow rectangular cross section are fitted into the horizontal arm portions 47 from above. In addition, a round hole (not shown) having the same cross-sectional shape as the boss portion 48 protruding upward from the bottom of each horizontal arm portion 47 is formed on the lower surface side of each horizontal beam 5a, and each horizontal beam 5a is formed on the upper surface thereof. Screw to the boss 48 with screws 49 from the side.

  The base block 41 is further formed with a plurality of screw mounting portions 51a to 51d for fastening the screws 51 to embedded nuts (demon nuts) 59 opened on the lower surface of the tabletop plate 2 ( (See FIGS. 4, 6 and 7).

  The side support portion 43 is integrally formed with a wide width portion 43 a that contacts the acute angle portions 3 b and 3 b of the leg column 3 and a narrow width portion 43 b that fits into the groove 33. A cut groove 53 into which a shaft portion of a horizontal bolt 52 as a fastening tool can be inserted is formed on the lower end side of the wide width portion 43a (see FIGS. 5, 7, and 9).

  Then, after casting molten aluminum metal in the mold (mold), the outer shape of the connection body 4 is formed with a taper in order to remove the connection body 4 whose temperature has dropped from the mold (mold). . Also in the side part support part 43, it inclines so that it may leave | separate from the side surface (one side of acute angle part 3b, 3b) of the leg support | pillar 3 as the thickness of the wide part 43a and the narrow part 43b goes to a lower end.

  When the side support portion 43 is fixed along the side surface of the leg column 3 and fastened to the leg column 3 with the horizontal bolt 52, the side support portion 43 is formed in a flat plate shape along the longitudinal axis in the cylindrical portion 32 of the leg column 3. The reinforcing member 54 is inserted. A pair of vertically elongated ridges 32a are formed in the cylindrical portion 32 so that the arrangement position of the vertically long reinforcing member 54 does not deviate from the screw pocket 35 in the cylindrical portion 32 (see FIG. 8).

  Further, as shown in FIGS. 9 and 10, a spacer body 55 made of a synthetic resin material is put into the concave groove 33. The flat plate portion 55a of the spacer body 55 is formed so that its upper thickness is thin and becomes thicker downward, along the inner surface of the wide width portion 43a, and the horizontal beam support portion when the connecting body 4 is attached to the leg column 3 (Horizontal arm part) 47 is regulated so that its posture is horizontal. Further, a guide block 55b that is slidably fitted in the kerf 53 and an insertion hole 55c for the lateral bolt 52 are formed in a part of the flat plate portion 55a.

  Note that a lower cover member 56 (which may be a synthetic resin material) having the same cross-sectional shape is attached to the lower end of the leg column 3, and an adjuster bolt 57 is attached to the lower cover member 56 so as to be adjustable in height (see FIG. 11).

  In the above configuration, after attaching the lower cover member 56 and the adjuster bolt 57 to the lower end of the leg column 3 in advance, the reinforcing member 54 is inserted into the cylindrical portion 31 of the leg column 3 from above. Next, the upper support portion 42 of the connecting body 4 is covered from the upper end of the leg column 3, bolts 45 and screws 46, which are vertical fasteners, are inserted from the mounting holes 45 a and 45 b, and the bolts 45 and screws 46 are inserted into the screw pockets 34. , 35. On the other hand, the inner surface of the wide portion 43a in the side support portion 43 is brought into contact with the acute angle portions 3b and 3b arranged in a row, and the guide block 55b of the spacer body 55 inserted into the groove 33 from below the wide portion 43a. Is inserted into the groove 53. Next, a hexagonal hole-connecting horizontal bolt 52, which is a lateral fastening tool, is inserted in a predetermined height position of the insertion hole 55c of the spacer body 55 and the concave groove 33 (partition plate portion 31) in advance. It is fastened to the screw hole of the reinforcing member 54 via 58 (see FIG. 8).

  In this way, by fixing the connecting body 4 to the upper end portion of the leg column 3 via a plurality of vertical and horizontal fastening devices (bolts 45, screws 46, horizontal bolts 52), compared to the conventional mounting structure, Fixing (mounting) strength is greatly improved. Further, by inserting the spacer body 55 between the side surface (partition plate portion 31) of the leg column 3 and the side support portion 43, the mounting posture of the coupling body 4 with respect to the leg column 3 can be made constant, There is an effect that the lower end side of the side support part 43 can be prevented from greatly bending into the concave groove 33 on the side surface of the leg support 3 and the deformation of the side support part 43 can be avoided.

  Next, the horizontal beam 5a is put on the pair of horizontal arm portions 47 in the connection body 4 and then fixed with screws 49. Further, the lower surface side of the horizontal beam 5a and the lower surface side of the base block 41 in the connection body 4 are attached to the tabletop plate 2. If each screw is fixed, the tabletop 2 will be firmly fixed.

  12 to 20 show a second embodiment. In this embodiment, horizontally long stabilizing feet 11 are attached to the lower ends of the pair of left and right leg posts 10, and the connecting body 12 is attached to the upper ends of the leg posts 10. Secure through fasteners. Further, the connecting bodies 12 are connected to each other through the cross beam 13, and the connecting body 12 and the cross beam 13 and the lower surface of the tabletop 2 are fixed with screws. Each leg column 10 is an aluminum extruded material, and the connecting body 12 and the stable leg 11 are die-cast aluminum.

  As shown in FIG. 19, the leg support 10 in the present embodiment has a substantially trapezoidal outer shape in a horizontal section, round corners 10 a are formed on the left and right sides of the long side, and a pair of obtuse angles on both sides of the short side. Part 10b is formed. And the partition plate part 15 is provided so that the ditch | groove 14 may be formed between a pair of obtuse angle part 10b. Moreover, a pair of 2nd partition plate part 16 is provided so that the both ends and long side part of the 1st partition plate part 15 may be connected. Thus, a cylindrical portion 17a having a rectangular shape in plan view is formed between the pair of second partition plate portions 16, and a substantially triangular shape in plan view is formed between each second partition plate portion 16 and each round corner portion 10a. The cylindrical portion 17b is formed. Each cylindrical portion 17b has Ω-shaped screw pockets 34 'and 35' (see FIG. 19 and claims) on the second partition plate portion 16 side and the round corner portion 10a side in plan view. (Corresponding to the mating ridge) is integrally formed.

  As shown in FIGS. 12 to 17, the connecting body 12 is an integrally formed die-cast member made of aluminum or the like. As shown in FIGS. 13 and 14, the base block 18 of the coupling body 12 is substantially pentagonal in plan view and is reinforced by a plurality of vertically extending ribs 18 b.

  The base block 18 is in contact with the upper support portion 19 having substantially the same shape (trapezoid) as the planar shape of the leg column 10, and the obtuse angle portions 10 b and 10 b of the leg column 10, and a part thereof is formed in the concave groove 14. A side support portion 20 to be fitted, a horizontal arm portion 21 to be fitted and supported at an end portion of a cross beam 13 having a hollow rectangular cross section, and an auxiliary horizontal arm portion 22 extending in a 90-degree direction with respect to the horizontal arm portion 21 Are integrally formed. The horizontal arm portion 21 and each auxiliary horizontal arm portion 22 are also provided with a plurality of vertically extending ribs so as to improve strength while reducing weight.

  The lower surface of the upper support portion 19 is formed so as to be able to abut on the upper end surface (plane) of the leg support 10, and the lower surface of the upper support portion 19 is connected to the upper end portions of the two cylindrical portions 17 b of the leg support 10. Positioning blocks 23 that can be respectively inserted from above are formed to protrude (see FIG. 16). Further, a hexagonal socket connecting bolt 45 'and a screw 46' are inserted from above into the upper support portion 19 as fasteners for fixing to the screw pockets 34 ', 35' of the leg column 10 with screws. Possible mounting holes 45a ', 46a' (four in total) are drilled (see FIGS. 13, 15, 16, and 20).

  A part of the upper support portion 19 (the rounded corner portion 10a side of the leg column 10) is stepped down with respect to the base block 18, so that there is a gap with respect to the lower surface of the corner portion of the tabletop plate 2. This is possible (see FIG. 18).

  On the other hand, the horizontal arm portion 21 protruding from the base block 18 has a hollow rectangular cross section, and the end of the horizontal beam 13 having a hollow rectangular cross section is fitted in the horizontal direction from the tip of the horizontal arm portion 21, and each horizontal beam 13 is attached to the horizontal arm portion 21. Screwed to the boss 21a with screws 49 'from the upper surface side (see FIGS. 17 and 18).

  The side portion support portion 20 is formed by integrally forming a wide width portion 20 a that contacts the obtuse angle portions 10 b and 10 b of the leg column 10 and a narrow width portion 20 b that fits into the groove 14. A cut groove 53 ′ through which a shaft portion of a horizontal bolt 52 ′ serving as a fastening tool can be inserted is formed on the lower end side of the wide width portion 20 a (see FIGS. 14, 17, and 19).

  Then, in the same manner as in the first embodiment, after casting molten aluminum metal in a mold (mold), the outer shape of the connection body 12 is removed in order to remove the temperature-reduced connection body 12 from the mold (mold). The punch taper is formed. Also in the side part support part 20, it inclines so that it may leave | separate from the side surface (one side of obtuse angle part 10b, 10b) of the leg support | pillar 10 as the thickness of the wide part 20a and the narrow part 20b goes to a lower end.

  And the spacer body 55 (refer FIG. 10) of the shape similar to 1st Embodiment is put in the ditch | groove 14. FIG. The flat plate portion 55a of the spacer body 55 is formed such that the upper thickness is thin and becomes thicker as it goes downward, along the inner surface of the wide width portion 43a, and the horizontal arm portion when the connecting body 12 is attached to the leg column 10. 21 is regulated to be horizontal. A part of the flat plate portion 55a is formed with a guide block 55b slidably fitted in the kerf 53 'and an insertion hole 55c for the lateral bolt 52'.

  When the side support portion 20 is placed along the side surface of the leg strut 10 and fastened to the leg strut 10 with the lateral bolt 52 ', the side support portion 20 is placed along the longitudinal axis in the center cylindrical portion 17a of the leg strut 10. Then, the reinforcing member 24 having the same cross-sectional shape as that of the cylindrical portion 17a is inserted (see FIG. 19).

  As shown in FIG. 13, the stable foot 11 is also provided with a pair of positioning blocks 25 having the same shape as the positioning block 23 in the upper support portion 19, and these are fitted into the cylindrical portion 17 b at the lower end of the leg column 10. By doing so, the stable foot 11 and the leg support 10 can be positioned firmly. Then, the bolt 26 as a fastening tool may be fastened to the screw pockets 34 ′ and 35 ′ of the leg column 10 from the lower surface side of the stable foot 11. The adjuster bolt 27 is a height adjustment and inclination adjustment means for the stable foot 11.

  In the above configuration, after the stabilizer foot 11 and the adjuster bolt 27 are attached to the lower end of the leg column 10 in advance, the reinforcing member 24 is inserted into the cylindrical portion 17a of the leg column 10 from above. Next, the upper support portion 19 of the connecting body 12 is covered from the upper end of the leg column 10, and bolts 45 ′ and screws 46 ′, which are vertical fasteners, are inserted from the mounting holes 45 a ′ and 45 b ′. 46 'is fastened and fixed to the screw pockets 34' and 35 '. On the other hand, the inner surface of the wide portion 20a in the side support portion 20 is brought into contact with one side of the obtuse angle portions 10b, 10b arranged in a row, and the spacer body 55 is inserted into the groove 14 from below the wide portion 20a. The block 55b is inserted into the cut groove 53 '. Next, a lateral bolt 52 'for connecting with a hexagonal hole, which is a lateral fastener, is drilled at a predetermined height position of the insertion hole 55c of the spacer body 55 and the concave groove 14 (first partition plate portion 15) in advance. It is fastened to the screw hole of the reinforcing member 24 through the formed hole (see FIG. 19).

  In this way, the connecting body 12 is fixed to the upper end portion of the leg support 10 via a plurality of vertical and horizontal fastening devices (bolts 45 ′, screws 46 ′, and horizontal bolts 52 ′), so that the conventional mounting structure is obtained. In comparison, the fixing (mounting) strength is greatly improved. Further, by inserting the spacer body 55 between the side surface (first partition plate portion 15) of the leg column 10 and the side support portion 20, the mounting posture of the coupling body 12 with respect to the leg column 10 can be made constant, In addition, the lower end side of the side support portion 20 is prevented from being greatly bent into the concave groove 14 on the side surface of the leg support 10, and the side support portion 20 can be prevented from being deformed.

  A plurality of mounting holes 28 a and 28 b provided in the auxiliary horizontal arm portion 22 and a plurality of mounting holes 29 a provided in the auxiliary arm 29 extending perpendicularly to the middle portion of the cross beam 13 are provided from the lower surface side of the screw 30. The tabletop 2 may be used at (see FIGS. 12 and 13).

  In addition, since the big clearance gap by the level | step difference of the upper support part 42 (19) in the said connection body 4 (12) can be formed between the leg support | pillar 3 (10) and the lower surface of the tabletop board 2, it utilizes that clearance gap. Applications such as fixing a base such as a stand for mounting parts on a desk occur.

It is a front view of the office desk by 1st Embodiment of this invention. It is a partially cutaway enlarged perspective view of the corner of the desk. It is a perspective view of the component of a desk. It is a top view which shows 1st Embodiment of a coupling body. FIG. 5 is a side view taken along line VV in FIG. 4. It is a perspective view of a coupling body. It is a partially cutaway principal part enlarged side sectional view. FIG. 8 is a cross-sectional view taken along line VIII-VIII in FIG. 7. It is the IX-IX line arrow expanded side sectional view of FIG. It is a perspective view of a spacer body. It is a perspective view of a lower cover member. It is a perspective view of the component of the desk by 2nd Embodiment of this invention. It is a disassembled perspective view which shows the coupling body of 2nd Embodiment, a leg support | pillar, and a stable leg. It is a top view of the coupling body of a 2nd embodiment. It is a front view of a coupling body. It is a partially notched bottom view of a connection body. FIG. 17 is a cross-sectional view taken along line XVII-XVII in FIG. 16. It is a partially cutaway sectional side view of a connection part. FIG. 19 is an enlarged sectional view taken along line XIX-XIX in FIG. 18. It is a partially cutaway perspective view of a connection part.

Explanation of symbols

2 Tabletops 3 and 10 Leg columns 4 and 12 Connecting body 11 Stable feet 5a and 13 Cross beams 14 and 33 Groove 15 First partition plates 17a and 17b, 32 Tube portions 18 and 41 Base blocks 19 and 42 Upper support portion 20 43 Side support portions 21, 47 Horizontal arm portion 22 Auxiliary horizontal arm portions 34, 35, 34 ', 35' Screw pockets 45, 46, 49, 52, 45 ', 46', 52 as engaging protrusions ′ Bolts and screws 55 as fasteners Spacer body

Claims (1)

In a desk provided with a table top plate, a horizontal beam supporting the table top plate and a plurality of leg columns, and a connecting body for connecting the upper surface of each leg column, the table top plate and the horizontal beam,
Fix the base block of the coupling body to the upper end of each leg column with a fastening tool from above,
The base block is integrally formed with an open upward horizontal arm portion,
A boss part is formed to protrude upward from the bottom of the horizontal arm part,
On the lower surface side of the end portion of the cross beam, a round hole that fits into the boss portion is provided,
The transverse beam is fixed to the boss portion from the upper surface with a fastening tool,
The base block is formed with a plurality of screw mounting portions for fastening screws to an embedded nut that opens on the lower surface of the tabletop plate,
A desk characterized in that the screws are fastened and fixed to the embedded nuts on the lower surface of the table top plate from the lower surface side of each screw mounting portion.