Fixture support structure and fixture

Abstract

To provide a connection structure which enables improvement of stability when furniture is installed, and to provide a support structure for furniture and the furniture.SOLUTION: A connection structure connects a first connection end 11a of a first rod 11 extending in a first direction and having a tube-like shape with a second connection end 12a of a second rod 12 extending in a second direction intersecting with the first direction and having a tube-like shape. In the first rod 11 and the second rod 12, cross sections orthogonal to a length direction have oval shapes. The first connection end 11a has an end surface 13A inclining relative to the first direction. The second connection end 12a has an end surface 14A inclining relative to the second direction. The first connection end 11a and the second connection end 12a are welded over entire peripheries with the end surfaces 13A, 14A butted.SELECTED DRAWING: Figure 6

Description

Technical Field

[0001] The present invention , What relates to a handy support structure and furniture.

Background Art

[0002] For example, furniture such as a table having a support structure is used. The support structure is constituted by, for example, a pipe frame having a bent portion formed by bending a pipe (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In order to ensure the strength of the bent portion, the bending radius of the bent portion is set large in the above-described support structure. Therefore, the area where the adjuster of the support structure can be provided becomes small, and there is a possibility that the stability when the furniture is installed is affected.

[0005] One aspect of the present invention can enhance the stability when furniture is installed What and provides a handy support structure and furniture.

Means for Solving the Problems

[0006] The connecting structure according to one aspect of the present invention is a connecting structure that connects a first connecting end of a tubular first rod extending in a first direction and a second connecting end of a tubular second rod extending in a second direction intersecting the first direction. The first rod and the second rod have an oval-shaped cross section orthogonal to the length direction. The first connecting end has an end face inclined with respect to the first direction, the second connecting end has an end face inclined with respect to the second direction, and the first connecting end and the second connecting end are welded over the entire circumference by butting the end faces against each other.

[0007] According to the above configuration, since the first rod and the second rod are connected by welding, sufficient mechanical strength can be ensured. This connecting structure is different from a bent portion formed by bending the rod, and the rod can be formed into a bent shape (for example, an L shape) without reducing the strength. Therefore, the adjuster can be provided at positions close to both ends of the second rod. Accordingly, the stability during installation of the furniture can be enhanced.

[0008] The major axis direction of the cross section of the first rod may be orthogonal to the second direction, and the major axis direction of the cross section of the second rod may be orthogonal to the first direction. According to the above configuration, the durability against an external force in a direction orthogonal to the plane formed by the first direction and the second direction can be enhanced.

[0009] Preferably, the inclination angle of the end face of the first connecting end with respect to the first direction is equal to the inclination angle of the end face of the second connecting end with respect to the second direction. According to the above configuration, the strength of the connecting portion between the first rod and the second rod can be enhanced.

[0010] The furniture support structure according to one aspect of the present invention includes the first rod and the second rod connected by the connecting structure.

[0011] According to the above configuration, since the first rod and the second rod are connected by welding, sufficient mechanical strength can be ensured. With this connection structure, the rod can be bent into a bent shape (for example, an L shape) without reducing the strength. Therefore, the adjuster can be provided at positions close to both ends of the second rod. Accordingly, the stability during installation of the furniture can be enhanced.

[0012] The first rod stands up from the second connection end of the second rod, and an adjuster for grounding on the floor surface is provided on the second rod. At least a part of the adjuster is preferably located below the first connection end of the first rod.

[0013] According to the above configuration, since the adjuster is provided near the location where the load from the first rod is applied on the second rod, the stability during installation of the furniture can be enhanced.

[0014] A part of the outer surface of the connection location between the first connection end and the second connection end may have a chamfered C shape. According to the above configuration, the safety of the connection location can be enhanced.

[0015] The furniture according to one aspect of the present invention includes the furniture support structure and a furniture body supported by the furniture support structure.

[0016] According to the above configuration, since the first rod and the second rod are connected by welding, sufficient mechanical strength can be ensured. With this connection structure, the rod can be bent into a bent shape (for example, an L shape) without reducing the strength. Therefore, the adjuster can be provided at positions close to both ends of the second rod. Accordingly, the stability during installation of the furniture can be enhanced.

Advantages of the Invention

[0017] According to one aspect of the present invention, it is possible to provide a connection structure, a furniture support structure, and furniture that can enhance the stability when the furniture is installed.

Brief Description of the Drawings

[0018]

Figure 1

Figure 2

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Figure 9

Figure 10

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Figure 13

MODE FOR CARRYING OUT THE INVENTION

[0019] Hereinafter, the connection structure, the support structure for furniture, and the furniture according to the embodiments of the present invention will be described with reference to the drawings.

[0020] [First Embodiment] FIG. 1 is a perspective view showing the overall configuration of the furniture 1 with a top plate according to the embodiment. FIG. 2 is an exploded view of the support structure 3 for furniture according to the first embodiment. The support structure for furniture is also referred to as the "support structure". FIG. 3 is a cross-sectional view orthogonal to the longitudinal direction of the first rod 11. FIG. 4 is a cross-sectional view orthogonal to the longitudinal direction of the second rod 12. FIG. 9 is a front view of a part of the support structure 3.

[0021] As shown in FIG. 1, the furniture 1 with a top plate includes a top plate 2, a support structure 3, and a frame body 5. The furniture 1 with a top plate is, for example, a table having a plurality of support legs. The furniture 1 with a top plate is an example of "furniture". Looking from a direction orthogonal to the top plate 2 is referred to as "plan view". The support structure 3 and the frame body 5 are made of metal such as steel, aluminum, or aluminum alloy, for example.

[0022] The top plate 2 is provided on and supported by a plurality of support structures 3 and the frame body 5. In the present embodiment, the top plate 2 is an oval plate-shaped member.

[0023] A plurality of support structures 3 are installed on the floor surface F. In the present embodiment, the number of support structures 3 is two. The two support structures 3 are arranged at intervals in the longitudinal direction of the top plate 2. The two support structures 3 are arranged at intervals in a direction perpendicular to the first direction and the second direction. The plurality of support structures 3 are the legs 30 of the furniture 1 with a top plate.

[0024] The support structure 3 includes a pair of first rods 11, 11 and one second rod 12. The first rod 11 is tubular and extends in the first direction. The first direction is a direction intersecting the floor surface F. In the present embodiment, the first direction is a direction substantially perpendicular to the floor surface F. Of the pair of first rods 11, 11, one first rod 11 is referred to as the "first rod 11A". The other first rod 11 is referred to as the "first rod 11B".

[0025] A pair of first rods 11, 11 (11A, 11B) are arranged at intervals in the longitudinal direction (second direction) of the second rod 12. The first rod 11A stands up from one end (second connection end 12a) of the second rod 12. The first rod 11B stands up from the other end (second connection end 12b) of the second rod 12. The first rod 11A and the first rod 11B are arranged facing each other.

[0026] The second rod 12 is tubular and extends in the second direction. The second direction is a direction parallel to the floor surface F. The second direction is parallel to the short side direction of the top plate 2 in plan view. The longitudinal direction (second direction) of the second rod 12 is a direction intersecting the longitudinal direction (first direction) of the first rod 11. The longitudinal direction of the second rod 12 is substantially perpendicular to the longitudinal direction of the first rod 11.

[0027] As shown in FIG. 2, the lower end of the first rod 11A is the first connection end 11a. The first connection end 11a has an end face 13A inclined with respect to the longitudinal direction (first direction) of the first rod 11A. The lower end of the first rod 11B is the first connection end 11b. The first connection end 11b has an end face 13B inclined with respect to the longitudinal direction (first direction) of the first rod 11B.

[0028] As shown in FIG. 9, one end (second connection end 12a) of the second rod 12 has an end face 14A inclined with respect to the longitudinal direction (second direction) of the second rod 12. The length portion including the end face 14A of the second rod 12 is referred to as one end portion 12A. The one end portion 12A is located below the first connection end 11a of the first rod 11A. Most of the one end portion 12A overlaps the first rod 11A in side view. The other end (second connection end 12b) of the second rod 12 has an end face 14B inclined with respect to the longitudinal direction (second direction) of the second rod 12. The length portion including the end face 14B of the second rod 12 is referred to as the other end portion 12B. The other end portion 12B is located below the first connection end 11b of the first rod 11B. Most of the other end portion 12B overlaps the first rod 11B in side view. Note that the side view means looking from the direction in which the pair of first rods 11, 11 are separated from each other.

[0029] As shown in Fig. 2, it is desirable that the inclination angle α1 of the end face 13A with respect to the length direction (first direction) of the first rod 11A is equal to the inclination angle α2 of the end face 14A with respect to the length direction (second direction) of the second rod 12. When the inclination angle α1 and the inclination angle α2 are equal, the strength of the connecting portion between the first rod 11A and the second rod 12 can be increased.

[0030] It is desirable that the inclination angle β1 of the end face 13B with respect to the length direction (first direction) of the first rod 11B is equal to the inclination angle β2 of the end face 14B with respect to the length direction (second direction) of the second rod 12. When the inclination angle β1 and the inclination angle β2 are equal, the strength of the connecting portion between the first rod 11B and the second rod 12 can be increased.

[0031] The end face 13A of the first rod 11A and the end face 14A of the second rod 12 are inclined in a direction of descending from the inner side to the outer side of the support structure 3. In Fig. 2, the end face 13A and the end face 14A are inclined so as to gradually descend toward the right (the direction away from the first rod 11B).

[0032] The end face 13B of the first rod 11B and the end face 14B of the second rod 12 are inclined in a direction of descending from the inner side to the outer side of the support structure 3. In Fig. 2, the end face 13B and the end face 14B are inclined so as to gradually descend toward the left (the direction away from the first rod 11A).

[0033] As shown in Fig. 3, the cross-section orthogonal to the length direction of the first rod 11 is oval-shaped. As shown in Fig. 4, the cross-section orthogonal to the length direction of the second rod 12 is oval-shaped. It is desirable that the cross-section of the first rod 11 and the cross-section of the second rod 12 have the same shape. The wall thickness of the first rod 11 and the second rod 12 is uniform over the entire circumference.

[0034] The "oval shape" is a closed curve having two symmetry axes orthogonal to each other. The oval shape includes, for example, an elliptical shape, an oblong shape, an oval shape, a rounded rectangular shape, etc. The two symmetry axes orthogonal to each other are, for example, the major axis and the minor axis in the case of an ellipse. The oblong shape is a shape in which two semi - circles with equal radii are connected by a common circumscribed line. The "oval shape" also includes a composite shape combining a plurality of shapes (for example, an elliptical shape and an oblong shape). In the present embodiment, the cross - sections of the first rod 11 and the second rod 12 are elliptical.

[0035] FIG. 5 is a perspective view of the connection structure in the support structure 3. FIG. 6 is an exploded perspective view of the connection structure in the support structure 3. FIGS. 5 and 6 show a connection structure that connects the first connection end 11a of the first rod 11A and the second connection end 12a of the second rod 12. As shown in FIGS. 5 and 6, the first connection end 11a and the second connection end 12a are butt - jointed with the end faces 13A, 14A and welded over the entire circumference.

[0036] FIG. 7 is a perspective view of the connection structure in the support structure 3. FIG. 8 is an exploded perspective view of the connection structure in the support structure 3. FIGS. 7 and 8 show a connection structure that connects the first connection end 11b of the first rod 11B and the second connection end 12b of the second rod 12. As shown in FIGS. 7 and 8, the first connection end 11b and the second connection end 12b are butt - jointed with the end faces 13B, 14B and welded over the entire circumference.

[0037] As shown in FIGS. 5 and 7, the major - axis direction of the elliptical cross - section of the first rod 11 is orthogonal to the length direction (second direction) of the second rod 12. The major - axis direction of the elliptical cross - section of the second rod 12 is orthogonal to the length direction (first direction) of the first rod 11. The major - axis directions of the elliptical cross - sections of the first rod 11 and the second rod 12 are orthogonal to the plane formed by the first direction and the second direction. Therefore, the cross - sections of the first rod 11 and the second rod 12 are horizontally - long elliptical shapes. With this structure, this connection structure can enhance the durability against external forces in a direction orthogonal to the plane formed by the first direction and the second direction.

[0038] As shown in FIG. 9, a plurality of adjusters 15 are provided on the second rod 12. The adjuster 15 is provided on the lower surface of the second rod 12 and contacts the floor surface F. The adjuster 15 is, for example, a screw-in type adjuster. The adjuster 15 includes a screw shaft portion 16 and a grounding portion 17. The screw shaft portion 16 extends upward from the grounding portion 17. The grounding portion 17 is formed in a disc shape. The grounding portion 17 contacts the floor surface F.

[0039] The adjuster 15 is attached to the second rod 12 by screwing the screw shaft portion 16 into a screw hole 12c formed in the lower portion of the second rod 12. The adjuster 15 can adjust the protruding amount from the lower surface of the second rod 12 according to the tightening amount of the screw shaft portion 16.

[0040] In the present embodiment, two adjusters 15 are attached to the second rod 12. One of the two adjusters 15 is referred to as adjuster 15A. The other of the two adjusters 15 is referred to as adjuster 15B.

[0041] The adjuster 15A is provided at a position close to the second connection end 12a of the second rod 12. At least a part of the screw hole 12c to which the adjuster 15A is attached is formed in one end portion 12A of the second rod 12. Since the one end portion 12A is below the first connection end 11a of the first rod 11A, at least a part of this screw hole 12c is below the first connection end 11a. Therefore, at least a part of the adjuster 15A is located below the first connection end 11a.

[0042] The adjuster 15B is provided at a position close to the second connection end 12b of the second rod 12. At least a part of the screw hole 12c to which the adjuster 15B is attached is formed in the other end portion 12B of the second rod 12. Since the other end portion 12B is below the first connection end 11b of the first rod 11B, at least a part of this screw hole 12c is below the first connection end 11b. Therefore, at least a part of the adjuster 15B is located below the first connection end 11b.

[0043] At least a part of the adjuster 15A is within a region where the first connection end 11a extends in the longitudinal direction of the first rod 11A. At least a part of the adjuster 15B is within a region where the first connection end 11b extends in the longitudinal direction of the first rod 11B.

[0044] As shown in FIG. 1, a plurality of support structures 3, 3 are connected to the frame body 5. The frame body 5 includes a frame member 51 and a frame member 52. The frame member 51 connects the first rod 11A and the first rod 11B. The frame member 52 connects two frame members 51 to each other. The frame member 51 and the frame member 52 can be fixed to the lower surface of the top plate 2 using a fixture such as a bolt. Therefore, the support structure 3 is fixed to the top plate 2 via the frame body 5. The frame member 51 may be fixed to the top plate 2 via a top plate receiving member 4 that supports the top plate 2.

[0045] In the connection structures shown in FIGS. 5 and 6 and the connection structures shown in FIGS. 7 and 8, since the first rod 11 and the second rod 12 are connected by welding, sufficient mechanical strength can be ensured. These connection structures, unlike the bent portions formed by bending the rods, can form the rods 11, 12 into a bent shape (for example, an L-shaped) without reducing the strength. Therefore, the adjuster 15 can be provided at positions close to both ends of the second rod 12. Therefore, the stability during the installation of the top plate fitting 1 can be enhanced.

[0046] In the said connection structure, since the first rod 11 and the second rod 12 have a uniform wall thickness over the entire circumference, the manufacturing costs of the first rod 11 and the second rod 12 can be suppressed.

[0047] In the top plate fitting 1, an adjuster 15 (15A, 15B) is provided on the second rod 12. At least a part of the adjuster 15A is located below the first connection end 11a. At least a part of the adjuster 15B is located below the first connection end 11b. Therefore, on the second rod 12, the adjuster 15 is provided near the location where the load from the first rod 11 is applied. Thus, the stability during the installation of the top plate fitting 1 can be enhanced.

[0048] In this embodiment, the major axis directions of the elliptical cross-sections of the first rod 11 and the second rod 12 are perpendicular to the plane formed by the first direction and the second direction. However, the major axis directions of the elliptical cross-sections of the first rod 11 and the second rod 12 may be inclined at an arbitrary angle with respect to the plane formed by the first direction and the second direction.

[0049] [Second Embodiment] Next, the connection structure of the second embodiment will be described. FIG. 10 is a perspective view of the connection structure in the support structure 103 according to the second embodiment. FIG. 11 is an exploded perspective view of the connection structure in the support structure 103. FIGS. 10 and 11 show a connection structure that connects the first connection end 111a of the first rod 111A and the second connection end 112a of the second rod 112. For the common configurations with the first embodiment, the same reference numerals are given and the description is omitted.

[0050] As shown in FIG. 11, the first connection end 111a of the first rod 111A has an end face 113A that is inclined with respect to the length direction (first direction) of the first rod 111A. One second connection end 112a of the second rod 112 has an end face 114A that is inclined with respect to the length direction (second direction) of the second rod 112.

[0051] The first rod 111A has an oval-shaped (elliptical) cross-section perpendicular to the length direction. The second rod 112 has an oval-shaped (elliptical) cross-section perpendicular to the length direction.

[0052] As shown in FIG. 10, the first connection end 111a of the first rod 111A and the second connection end 112a of the second rod 112 are butt-welded together along the entire circumference by butting the end faces 113A and 114A against each other.

[0053] The major axis direction of the elliptical cross-section of the first rod 111 is along the plane formed by the first direction and the second direction. The major axis direction of the elliptical cross-section of the second rod 112 is also along the plane formed by the first direction and the second direction. Therefore, the cross-sections of the first rod 111 and the second rod 112 are vertically elongated elliptical shapes.

[0054] In the connection structure shown in FIGS. 10 and 11, since the first rod 111 and the second rod 112 are connected by welding, sufficient mechanical strength can be ensured. These connection structures are different from the bent portions formed by bending the rods, and the rods 111 and 112 can be formed into a bent shape (for example, an L-shaped) without reducing the strength. Therefore, the adjuster 15 can be provided at positions close to both ends of the second rod 112. Accordingly, the stability during the installation of the top plate fittings can be enhanced.

[0055] Since the major axis directions of the elliptical cross-sections of the first rod 111 and the second rod 112 are along the plane formed by the first direction and the second direction, the bending rigidity of the support structure 103 at the connection portion can be increased.

[0056] The shape of the cross-section orthogonal to the length direction of the first rod and the second rod is not limited to an ellipse. FIG. 12 is a cross-sectional view of a first rod 211 which is a modified example of the first rod 11. As shown in FIG. 12, the cross-section orthogonal to the length direction of the first rod 211 is an oval-shaped oblong. An oblong is a shape formed by connecting two semi-circles with equal radii by a common circumferential line. The second rod may also have an oblong cross-section orthogonal to its length direction.

[0057] FIG. 13 is a partial front view of a support structure 203 which is a modified example of the support structure 3. As shown in FIG. 13, in the support structure 203, chamfered portions 18 are formed on a part of the outer surface of the connection portion between the first connection end 11a and the second connection end 12a, and on a part of the outer surface of the connection portion between the first connection end 11b and the second connection end 12b, respectively. The chamfered portion 18 has a chamfered shape. A part of the chamfered portion 18 is formed at the tip portions of the first connection ends 11a, 11b and the second connection ends 12a, 12b. The chamfered portion 18 has an inclined surface that is inclined with respect to the length direction of the first rod 11 and the length direction of the second rod 12.

[0058] In the support structure 203, since the chamfered portion 18 is formed, there are almost no sharp portions at the connection locations, so the safety can be enhanced.

[0059] Although the embodiments of the top plate fixture have been described, the present invention is not limited to the above-described embodiments and can be appropriately modified without departing from the spirit thereof. In the embodiment, the connection structure is applied to the top plate fixture 1, but the connection structure of the embodiment can also be applied to a chair or the like. A chair is included in the top plate fixture. In the top plate fixture 1 (see FIG. 1), the length direction (first direction) of the first rod 11 and the length direction (second direction) of the second rod 12 are substantially perpendicular, but the angle formed by the first direction and the second direction is not particularly limited. The angle formed by the first direction and the second direction may be, for example, any angle greater than 0° and less than 90°. The angle formed by the first direction and the second direction may be, for example, any angle greater than 90° and less than 180°.

Explanation of Reference Numerals

[0060] 1 Top plate fixture 3, 103, 203 Fixture support structure 6 Fixture main body 11, 11A, 11B, 111, 111A, 211 First rod 11a, 11b, 111a First connection end 12, 112 Second rod 12a, 12b, 112a Second connection end 13A, 113A End face 13B End face 15, 15A, 15B Adjuster 18 Chamfered portion C F Floor surface

Claims

1. A pair of tubular first rods extending in a first direction, a tubular second rod extending in a second direction intersecting the first direction and connecting first connection ends, which are the lower ends of the pair of first rods, to each other, and a connecting member connecting the pair of first rods to each other at a position above the lower ends, wherein a second connection end of the second rod is connected to the first connection end of the first rod, the first rod and the second rod have an oval cross-section orthogonal to the longitudinal direction, the first connection end has an end face inclined with respect to the first direction, the second connection end has an end face inclined with respect to the second direction, the first connection end and the second connection end are butt-welded over the entire circumference with the end faces abutting each other, the major axis direction of the cross-section of the first rod is orthogonal to the second direction, the major axis direction of the cross-section of the second rod is orthogonal to the first direction, a support structure for furniture.

2. The inclination angle of the end face of the first connection end with respect to the first direction is equal to the inclination angle of the end face of the second connection end with respect to the second direction, The support structure for furniture according to Claim 1.

3. The first rod stands up from the second connection end of the second rod, an adjuster for grounding on the floor surface is provided on the second rod, at least a part of the adjuster is located below the first connection end of the first rod, The support structure for furniture according to Claim 1 or 2.

4. A part of the outer surface of the connection portion between the first connection end and the second connection end has a chamfered C shape, The support structure for furniture according to any one of Claims 1 to 3.

5. A furniture comprising the support structure for furniture according to any one of Claims 1 to 4 and a furniture body supported by the support structure for furniture, Furniture.

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