furniture

Abstract

The present invention provides a fixture that suppresses the malfunction of the rolling parts shifting from their predetermined positions on the fixture body, and enables miniaturization of the mounting structure for the rolling parts to the fixture body. [Solution] The fixture comprises a fixture body and a plurality of ground contact parts 6 provided on its lower side. Some of the ground contact parts are rolling parts 6A having wheels 61 that roll on the floor surface. The rolling parts have a support body 62 that supports the wheels so that they can rotate around a rotation axis RA that intersects the vertical direction Dv, but cannot rotate around an axis that extends in the vertical direction. The fixture body has a housing hole 53 that is recessed upward from its lower end and houses the support body. The fixture comprises a regulating means 7 that restricts the rotation of the rolling parts around the axis relative to the housing hole. The regulating means has a first flat side surface 71c formed on the inner surface of the housing hole and facing the width direction Dw, and a second flat side surface 72c formed on the outer surface of the support body and facing the width direction Dw. The second flat side surface faces the first flat side surface when the support body is housed in the housing hole.

Description

Technical Field

[0001] The present invention relates to furniture.

Background Art

[0002] Patent Document 1 discloses a piece of furniture (cabinet) having a rolling part (caster) with wheels (rollers) that roll on the floor surface attached to the lower surface of the furniture body (cabinet body, drawer). In the furniture of Patent Document 1, some of the rolling parts are fixed to the lower surface of the furniture body (drawer). Therefore, the rolling direction of the wheels of the rolling part is defined in a predetermined linear direction along the floor surface.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the furniture of Patent Document 1, when an external force acts in a direction perpendicular to the vertical direction on the rolling part fixed to the lower surface of the furniture body, problems such as the rolling part being displaced from a predetermined position of the furniture body occur, which is not preferable. It is also conceivable to avoid the above problems or restrict the rolling part from rotating around an axis extending in the vertical direction with respect to the furniture body by fixing the rolling part to the lower surface of the furniture body by fastening means using bolts. However, when adopting the fastening means using bolts, there is a problem that the attachment structure of the rolling part to the furniture body becomes large. [[ID=X]] [[ID=Y]]

[0005] [[ID=Z]] The present invention has been made in view of the above circumstances, and aims to provide a fixture that can reduce the size of the mounting structure for the rolling part to the fixture body while suppressing the occurrence of problems such as the rolling part shifting out of position from a predetermined position on the fixture body. [Means for solving the problem]

[0006] (1) Embodiment 1 of the fixture according to the present invention comprises a fixture body and a plurality of ground contact parts provided on the lower side of the fixture body and in contact with the floor surface, wherein at least one of the ground contact parts is a rolling part having a wheel that rolls on the floor surface, the rolling part comprises the wheel and a support that pivotally supports the wheel so as to be rotatable about a rotation axis that intersects the wheel in the vertical direction and supports it so as not to be rotatable about the axis extending in the vertical direction, and the fixture body has a bottomed hole recessed upward from the lower end of the fixture body, in which at least a part of the support is housed The support has a housing hole, and further comprises a restricting means for restricting the rolling portion from rotating about an axis extending vertically relative to the housing hole when the support is housed in the housing hole, wherein the restricting means has a first flat surface formed on the inner surface of the housing hole and facing in a direction intersecting the vertical direction, and a second flat surface formed on the outer surface of the support and facing in a direction intersecting the vertical direction, the second flat surface facing the first flat surface when the support is housed in the housing hole.

[0007] In the fixture according to Embodiment 1, the rolling part having wheels and a support is housed in a housing hole in the fixture body from below. This prevents malfunctions such as the rolling part shifting from its predetermined position on the fixture body, even when an external force acts on the rolling part in a direction perpendicular to the vertical direction when the fixture is positioned so that the rolling part is in contact with the floor.

[0008] Furthermore, the restricting mechanism that prevents the rolling part from rotating around an axis extending vertically relative to the housing hole is composed of a first flat side surface and a second flat side surface. Compared to the case where fastening means using bolts are used, the mounting structure of the rolling part to the fixture body can be made smaller.

[0009] (2) Embodiment 2 of the fixture according to the present invention is, in Embodiment 1, the restricting means having an engaging projection that protrudes to one side in the vertical direction from one of the outer surfaces of the support and the inner surface of the support, which are opposite to each other when the support is housed in the housing hole, and an engaging recess that is recessed to one side in the vertical direction from the other of the outer surfaces of the support and the inner surface of the housing hole and engages with the engaging projection, wherein one of the engaging projection and the engaging recess includes the first flat surface, and the other of the engaging projection and the engaging recess includes the second flat surface.

[0010] In a fixture configured in this way, the engaging projection and engaging recess can restrict the rotation of the rolling part around an axis extending vertically relative to the housing hole. Furthermore, by having first and second flat surfaces facing each other on the engaging projection and engaging recess, the rotation of the rolling part can be reliably restricted even if there is only one engaging projection and one engaging recess.

[0011] (3) Embodiment 3 of the fixture according to the present invention is, in Embodiment 2, the engaging protrusions are arranged in pairs with a gap between them in the intersecting direction that intersects the vertical direction, and the engaging recesses are arranged in pairs with a gap between them in the intersecting direction.

[0012] In a fixture configured in this way, with the two engaging protrusions engaged with the two engaging recesses respectively, a support or a part of the fixture body constituting the housing hole can be sandwiched between the two engaging protrusions in an intersecting direction that crosses vertically. This ensures that the rolling part, including the support, does not rotate around an axis extending vertically relative to the fixture body while the support is housed in the housing hole of the fixture body.

[0013] (4) Embodiment 4 of the fixture according to the present invention is, in Embodiment 2, the engaging projection is arranged at both ends of the inner surface of the housing hole in the direction along the axis of rotation, and protrudes downward from the inner surface of the housing hole, The engagement recesses are located at both ends of the outer surface of the support in a direction along the axis of rotation, and may be recessed downward from the outer surface of the support.

[0014] In a fixture configured in this way, with the two engaging protrusions engaged with the two engaging recesses respectively, a support or a part of the fixture body constituting a housing hole can be sandwiched between the two engaging protrusions in a direction along the axis of rotation. This ensures that the rolling part, including the support, does not rotate around an axis extending vertically relative to the fixture body while the support is housed in the housing hole of the fixture body.

[0015] Furthermore, this configuration allows for a smaller mounting structure for the rolling parts to the fixture body compared to the case where the two engaging protrusions and two engaging recesses are aligned perpendicular to the axis of rotation when viewed from above. This point will be explained below. To minimize the height dimension of the rolling part in the vertical direction, it is necessary to position the two engaging recesses on the support on the outside of the wheel when viewed from the vertical direction, so that they do not interfere with the wheel. In this case, positioning the two engaging recesses at both ends of the outer surface of the support in the direction along the axis of rotation allows for a smaller spacing between the two engaging recesses compared to positioning them at both ends of the outer surface of the support in the direction of the wheel's rolling. This makes it possible to miniaturize the mounting structure of the rolling part to the main body of the fixture.

[0016] Furthermore, assuming that the dimensions of the rolling part in the rolling direction are constant, arranging the two engagement recesses at both ends of the outer surface of the support in the direction along the axis of rotation allows for a larger wheel dimension in the rolling direction, i.e., the wheel diameter, compared to arranging the two engagement recesses at both ends of the outer surface of the support in the direction of the wheel's rolling. A larger wheel diameter improves operability when moving furniture while rolling the wheels on the floor.

[0017] (5) Embodiment 5 of the fixture according to the present invention, in Embodiment 4, the support has a pair of side wall portions located on both sides of the wheel in a direction along the axis of rotation and on which a shaft member that rotatably supports the wheel is mounted, and a top wall portion located above the wheel and connected to the pair of side wall portions, wherein the pair of side wall portions has an extended wall portion that extends outward from the support in a direction along the axis of rotation from a portion of the side wall portion that is above the portion on which the shaft member is mounted and below the top wall portion, and the lower end of the engagement recess may be defined by the extended wall portion.

[0018] In a fixture configured in this way, when the rolling part is housed in the housing hole and the engaging projection of the housing hole engages with the engaging recess of the support, the lower end of the engaging projection abuts against the upper surface of the extended wall portion that forms the lower end of the engaging recess, thereby causing the load of the fixture body to act on the upper surface of the extended wall portion. Here, the extended wall portion extends outward from the support in a direction along the axis of rotation from a portion of the side wall portion above the portion where the shaft member is installed (the installation portion of the side wall portion). Therefore, the load of the fixture body acting on the upper surface of the extended wall portion can be prevented from being transmitted to the installation portion of the side wall portion. In other words, the load acting on the installation portion of the side wall portion can be reduced. This protects the installation portion of the side wall portion. However, if, for example, the extended wall portion also includes the installation portion of the side wall portion, the load transmitted to that installation portion will be greater. Therefore, if there are molding defects in the engagement recesses or the mounting areas of the side walls, cracks or other problems may occur in the support structure due to large loads.

[0019] (6) Embodiment 6 of the fixture according to the present invention is, in any embodiment 1 to 5, the receiving hole has a bottom surface facing downward, the support has a top surface facing upward and facing the bottom surface, and a surface joining member that joins the top surface and the bottom surface may be interposed between the top surface and the bottom surface.

[0020] In a fixture configured in this way, the rolling parts are fixed to the fixture body by surface bonding members, ensuring that the rolling parts do not fall downward from the fixture body. Further, by fixing the rolling part to the furniture body with the surface joining member, it is possible to reduce the size (particularly the height) of the mounting structure of the rolling part to the furniture body as compared with the case of fixing the rolling part to the furniture body by fastening means using bolts.

[0021] Also, even if an external force acts on the rolling part (for example, a wheel) in a direction perpendicular to the vertical direction, it is possible to prevent the top surface of the support from peeling off from the bottom surface of the accommodation hole against the joining force of the surface joining member based on the external force. Also, since the surface joining member enters the inside of the accommodation hole, it is difficult to be visually recognized from the outside of the furniture body. Thereby, it is also possible to prevent the external appearance design of the furniture from being deteriorated due to the presence of the surface joining member.

[0022] (7)Aspect 7 of the furniture according to the present invention may be such that, in Aspect 6, the surface joining member is compressibly deformable in the direction in which the top surface and the bottom surface are aligned.

[0023] In the furniture configured as described above, even when the shapes of the top surface of the support and the bottom surface of the accommodation hole do not match due to factors such as molding defects (for example, when the top surface and the bottom surface are not parallel), the surface joining member is compressibly deformed, so that the joining strength between these top surface and bottom surface can be ensured.

[0024] (8)Aspect 8 of the furniture according to the present invention is such that, in any one of Aspects 1 to 7, the furniture body includes a standing portion extending in the vertical direction, a top plate supported by the standing portion from below, and a plurality of leg rod portions extending in a direction intersecting the vertical direction from the lower end portion of the standing portion, and the grounding portion is provided at each of the tip portions in the extending direction of the plurality of leg rod portions, and at least one of the grounding portions may be the rolling portion.

[0025] In the furniture configured as described above, it is possible to suppress the occurrence of problems such as the rolling part being displaced from a predetermined position of the leg rod part, and it is possible to reduce the size of the leg rod part provided with the rolling part.

Effects of the Invention

[0026] According to the present invention, in a fixture, it is possible to reduce the size of the mounting structure for the rolling part to the fixture body while suppressing the occurrence of problems such as the rolling part shifting out of position from a predetermined position on the fixture body. [Brief explanation of the drawing]

[0027] [Figure 1] This is a perspective view of the fixture according to this embodiment, seen from the top surface of the tabletop. [Figure 2] This is a perspective view of the above fixture, seen from the underside of the tabletop. [Figure 3] This is a bottom view of the above fixture, seen from below. [Figure 4] This is a bottom view of the above-mentioned fixture, showing the housing hole formed at the tip of the leg rod and the rolling part housed in the housing hole, viewed from below. [Figure 5] This is a cross-sectional view taken along the VV line in Figure 4. [Figure 6] This is a perspective view from below of the above-mentioned fixture, showing the rolling mechanism removed from the housing hole in the leg rod. [Figure 7] This is a cross-sectional view of the leg rod portion of the above-mentioned fixture, perpendicular to the extension direction of the leg rod portion. [Figure 8] This is a bottom view of the above-mentioned fixture, showing the housing hole for the leg rod as seen from below. [Figure 9] This is a perspective view showing the rolling parts of the above-mentioned fixture. [Figure 10] This is a top view of the rolling mechanism of the above-mentioned fixture, seen from above. [Modes for carrying out the invention]

[0028] An embodiment of the present invention will be described below with reference to the attached drawings. As shown in Figure 1, the furniture 1 of this embodiment is a piece of furniture with a tabletop, such as a desk, and is placed on the floor surface F. As shown in Figures 1 and 2, the furniture 1 comprises one furniture body 2, a plurality of ground contact parts 6, and a regulating means 7 (see Figure 5). The furniture body 2 includes an upright part 3, one tabletop 4, and a plurality of leg rods 5. In this embodiment, the tabletop 4 is formed in a square shape when viewed from the thickness direction in a plan view.

[0029] In the following description, the direction perpendicular to the floor surface F is defined as the vertical direction Dv, the direction in which the first opposite side 41 of the four sides 41, 42 of the top plate 4 are aligned within the plane perpendicular to the vertical direction Dv is defined as the front-to-back direction Da, and the direction in which the second opposite side 42 of the four sides 41, 42 of the top plate 4 are aligned is defined as the width direction Dw. In this embodiment, since the plan view shape of the top plate 4 is rectangular, the front-to-back direction Da and the width direction Dw are perpendicular to each other.

[0030] The upright portion 3 extends in the vertical direction Dv. In this embodiment, the upright portion 3 is a single support column 31 that extends in the vertical direction Dv. The tabletop 4 is formed in a plate shape with the vertical direction Dv as the thickness direction. The tabletop 4 has an upper surface 4a facing upward in the vertical direction Dv and a lower surface 4b facing downward in the vertical direction Dv (facing the opposite side of the upper surface 4a). The upper surface 4a of the tabletop 4 functions as a work surface for the user. The tabletop 4 is connected to the upper end of the support column 31 and supported from below by the support column 31. That is, the upper end of the support column 31 is connected to the lower surface 4b of the tabletop 4. Specifically, the upper end of the support column 31 is provided with a receiving seat 32 that is larger than the support column 31 when viewed from the vertical direction Dv and receives the tabletop 4. This receiving seat 32 is connected to the lower surface 4b of the tabletop 4. This allows the tabletop 4 to be stably supported. In this embodiment, the support column 31 is located in the center of the tabletop 4 in a plan view when viewed from the vertical direction Dv. Note that the support column 31 may be located offset from the center of the tabletop 4, for example. However, it is more preferable that the support column 31 be positioned at a distance from the corner 43 of the top plate 4. As shown in Figure 3, the four leg rods 5 extend from the lower end of the support column 31 toward the four corners 43 of the top plate 4 in a plan view. The four leg rods 5 each extend in a direction intersecting the vertical direction Dv. The corners 43 of the top plate 4 are the vertices where the ends of adjacent sides 41 and 42 of the top plate 4 meet in a plan view. In the following description, the direction in which the leg rods 5 extend from the lower end of the support column 31 will be referred to as the "extension direction Dll of the leg rods 5", and the direction of the leg rods 5 perpendicular to the extension direction Dll and the vertical direction Dv will be referred to as the "width direction Dlw of the leg rods 5".

[0031] The tip of each leg rod 5 in the extension direction Dll is positioned in a plan view corresponding to the corner 43 of the tabletop 4. The tips of multiple leg rods 5 in the extension direction Dll are located below different corners 43 of the tabletop 4, and not below the same corner 43. Furthermore, in the plan view shown in Figure 3, it is preferable that the extension direction Dll of each of the multiple leg rods 5 is set such that a first imaginary line VL1 extending in the extension direction Dll of the leg rod 5 at the center of the leg rod 5 in the width direction Dlw of the leg rod 5 passes through the corner 43 of the tabletop 4. It is also preferable that the extension direction Dll of the leg rod 5 is set such that the first imaginary line VL1 bisects the angle of the corner 43 of the tabletop 4 (the angle formed by two adjacent sides 41 and 42 of the tabletop 4).

[0032] In Figure 3, the tip of the leg rod 5 is located below the inner vicinity of the corners 43 of the tabletop 4 in a plan view (corner vicinity region). The four corner vicinity regions corresponding to the four corners 43 are located apart from each other. The tip of the leg rod 5 may, for example, be located below the corners 43 of the tabletop 4. Alternatively, the tip of the leg rod 5 may be located near the corners 43 of the tabletop 4 in a plan view but outside the tabletop 4, however, it is more preferable that the leg rod 5 does not protrude outside the tabletop 4 in a plan view.

[0033] In this embodiment, the four leg rods 5 extend linearly from the lower end of the support column 31 toward the four corners 43 of the top plate 4 in a plan view. That is, the four leg rods 5 extend radially from the lower end of the support column 31. In this embodiment, since the top plate 4 is formed as a square in a plan view, the four leg rods 5 are arranged at equal intervals in the circumferential direction around the support column 31, with the support column 31 as the center. In other words, the tips of the four leg rods 5 are positioned on the circumference of a virtual circle centered on the axis of the support column 31. For this reason, the four leg rods 5 are formed in an X shape in a plan view. Also, the lengths of the four leg rods 5 are equal to each other.

[0034] As shown in Figure 1, in this embodiment, each leg rod 5 inclins downward as it extends from the lower end of the support column 31 in a direction perpendicular to the vertical direction Dv. Therefore, the tip of each leg rod 5 is located below the base end of the leg rod 5. The length of the leg rod 5 extending downward is sufficiently small compared to the length of the leg rod 5 extending in a direction perpendicular to the vertical direction Dv. That is, the inclination angle of the leg rod 5 with respect to the plane perpendicular to the vertical direction Dv is small.

[0035] As shown in Figure 3, each leg rod portion 5 is formed in a shape that tapers towards the tip in the extension direction Dll of the leg rod portion 5 when viewed from above.

[0036] As shown in Figure 7, each leg rod 5 has a pair of side surfaces 51 that face opposite each other in the width direction Dlw of the leg rod 5, which is perpendicular to the extension direction Dll and the vertical direction Dv of the leg rod 5. In Figure 7, the extension direction Dll of the leg rod 5 is generally perpendicular to the plane of the paper, and the width direction Dlw of the leg rod 5 is the left-right direction. The pair of side surfaces 51 of the leg rod 5 are inclined in the cross-section shown in Figure 7 so as you move from the upper end to the lower end of the leg rod 5, they approach the opposite side surface 51 of the leg rod 5. In other words, the width dimension of the leg rod 5 decreases as you move from the upper end to the lower end of the leg rod 5.

[0037] As shown in Figure 1, the four contact points 6 are each provided on the underside of the tip of the four leg rods 5 in the extension direction Dll and contact the floor surface F. These four contact points 6 are positioned in a plan view corresponding to the four corners 43 of the top plate 4 (see Figure 3). This prevents or suppresses tilting or tipping of the fixture with a top plate 1 even when a load is applied to one corner 43 of the top plate 4 from the upper surface 4a side of the top plate 4 while the fixture with a top plate 1 is placed on the floor surface F.

[0038] As shown in Figures 1 to 3, of the four contact points 6, two are rolling parts 6A, and the other two are adjusters 6B. The two rolling parts 6A and the two adjusters 6B are aligned in the longitudinal direction Da. In the following explanation, the side of the longitudinal direction Da where the two rolling parts 6A are located will be referred to as the "front," and the side of the longitudinal direction Da where the two adjusters 6B are located will be referred to as the "rear."

[0039] The two rolling parts 6A are aligned along one predetermined side 41A of the top plate 4. In this embodiment, the predetermined side 41A of the top plate 4 is the side located at the rear of the first pair of opposite sides 41 of the top plate 4 that are aligned in the front-rear direction Da. Each rolling part 6A has a wheel 61 that contacts the floor surface F and rolls only in a direction perpendicular to the predetermined side 41A in a plan view. That is, the wheel 61 of each rolling part 6A rolls in the front-rear direction Da. The rolling of the wheels 61 of these two rolling parts 6A on the floor surface F allows the top plate fixture 1 to be moved in the front-rear direction Da. The two rolling parts 6A are provided on the underside of the tips of the two front-facing rod parts 5 (first rod part 5A and second rod part 5B). As shown in Figure 3, the direction of rotation of the wheel 61, which rolls in the longitudinal direction Da, is along the second imaginary line VL2 (imaginary line) that bisects the interior angle θ formed by the first rod part 5A and the second rod part 5B, on which the two rolling parts 6A are provided, in a plan view. The specific structure of the rolling part 6A and the specific mounting structure of the rolling part 6A to the tip of the leg rod 5 will be described later.

[0040] As shown in Figures 2 and 3, the adjuster 6B has a contact surface 6B1 that faces downward and makes surface contact with the floor surface F. The two adjusters 6B are each provided on the underside of the tips of the two rear-facing leg rods 5. The two adjusters 6B can each adjust the height of the leg rod 5 to which the adjuster 6B is attached, with respect to the floor surface F. This allows all four contact points 6 to simultaneously make contact with the floor surface F, even if the floor surface F has some unevenness. In other words, the furniture 1 can be stably positioned on the floor surface F.

[0041] The specific structure of the rolling part 6A will be described below. As shown in Figures 5, 6, and 9, the rolling part 6A of this embodiment has a support 62 in addition to the wheel 61. The support 62 pivotally supports the wheel 61 so that it can rotate around a rotation axis RA that intersects the vertical direction Dv. The support 62 also supports the wheel 61 so that it cannot rotate around an axis extending in the vertical direction Dv. In this embodiment, the rotation axis RA of the wheel 61 extends in the width direction Dw. Also, as shown in Figures 4 and 9, the length dimension of the wheel 61 in the rolling direction (front-rear direction Da) (i.e., the diameter dimension of the wheel 61) is greater than the width dimension of the wheel 61 in the direction along the rotation axis RA (width direction Dw). Note that the dimensions of the wheel 61 are not limited to these.

[0042] As shown in Figures 5 and 9, the support 62 has a pair of side walls 65 and a top wall 66. The top wall portion 66 is located above the wheel 61 and is connected to a pair of side wall portions 65. The pair of side wall portions 65 are located on both sides of the wheel 61 in the direction along the rotation axis RA (width direction Dw). As a result, the support 62 has a housing space HS that surrounds the wheel 61 with the pair of side wall portions 65 and the top wall portion 66. This housing space HS opens downward, and a portion of the wheel 61 protrudes downward from the housing space HS. A pair of side wall sections 65 are fitted with shaft members 63 that rotatably support the wheels 61. The portion of the side wall section 65 on which the shaft members 63 are fitted (the fitted portion 651 of the side wall section 65) is located at the lower end of the side wall section 65.

[0043] Each of the pair of side wall sections 65 has an extended wall section 67. The extended wall section 67 extends outward from the support 62 in a direction along the rotation axis RA (width direction Dw) from a portion of the side wall section 65 that is above the mounting portion 651 and below the top wall section 66.

[0044] As shown in Figures 6 and 9, the support 62 of this embodiment has a peripheral wall portion 68 that surrounds the wheel 61 in a plan view. Part of the peripheral wall portion 68 is made up of the pair of side wall portions 65 described above. The top wall portion 66 described above is connected to the upper side of the peripheral wall portion 68. Therefore, the housing space HS in the support 62 in which the wheel 61 (or part thereof) is housed opens only downwards. Furthermore, as shown in Figure 10, the support 62 of this embodiment is formed in a circular shape when viewed from above.

[0045] The following describes the specific mounting structure of the rolling part 6A to the leg rod 5. As shown in Figures 5, 6, and 8, the leg rod portion 5 on which the rolling portion 6A is provided has a housing hole 53 that is recessed upward from the lower end of the tip of the leg rod portion 5. The housing hole 53 is a bottomed hole with a bottom surface 53a facing downward. In this embodiment, the bottom surface 53a is formed flat and is perpendicular to the vertical direction Dv. The housing hole 53 in this embodiment is formed in a circular shape in plan view, similar to the support 62 described above. The size of the circle of the housing hole 53 is set to be the same as (or slightly larger than) the size of the circle of the support 62. As shown in Figures 4 and 5, the support 62 is housed in the housing hole 53. In this embodiment, the portion of the support 62 excluding the lower portion of the support 62 on which the shaft member 63 is mounted is housed in the housing hole 53. However, the manner in which the support 62 is housed in the housing hole 53 is not particularly limited, as long as the depth to which the housing hole 53 recesses upward is such that the contact surface of the wheel 61 that contacts the floor surface F is exposed downward from the housing hole 53, and the side surface 51 does not contact the floor surface F and hinder the rolling of the wheel 61. In addition, a part (upper part) of the wheel 61 is also housed in the housing hole 53.

[0046] As shown in Figures 5, 6, and 9, the support 62 of the rolling part 6A housed in the housing hole 53 has a top surface 62a facing upward and opposite the bottom surface 53a of the housing hole 53. The top surface 62a of the support 62 is formed by the top wall portion 66 described above. In this embodiment, the top surface 62a is formed to be flat, similar to the bottom surface 53a of the housing hole 53.

[0047] As shown in Figures 5 and 6, a surface joining member 8 is interposed between the bottom surface 53a of the aforementioned housing hole 53 and the top surface 62a of the support 62 to join these two surfaces. Preferably, the surface joining member 8 is compressible and deformable in the direction in which the bottom surface 53a and the top surface 62a are aligned (vertical direction Dv). Specific examples of the surface joining member 8 include, for example, double-sided tape, hook-and-loop fasteners, and adhesives. The top surface 62a of the support 62 housed in the housing hole 53 is joined to the bottom surface 53a of the housing hole 53 by the surface joining member 8, thereby fixing the rolling part 6A to the tip of the leg rod 5.

[0048] As shown in Figure 5, the restricting means 7 restricts the rolling part 6A from rotating around an axis extending in the vertical direction Dv relative to the housing hole 53 while the support 62 is housed in the housing hole 53 of the leg rod 5. The restricting means 7 has an engaging projection 71 and an engaging recess 72. The engaging projection 71 protrudes downward (to one side in the vertical direction Dv) from the inner surface of the housing hole 53, facing the outer surface of the support 62, when the support 62 is housed in the housing hole 53. The engaging recess 72 is recessed downward (to one side in the vertical direction Dv) from the outer surface of the support 62, facing the inner surface of the housing hole 53, when the support 62 is housed in the housing hole 53. The engaging recess 72 engages with the engaging projection 71 when the support 62 is housed in the housing hole 53.

[0049] As shown in Figures 5 and 8, the engaging projections 71 are arranged in pairs, spaced apart from each other in an intersecting direction that crosses the vertical direction Dv. Specifically, the engaging projections 71 are positioned at both ends of the bottom surface 53a (inner surface) of the housing hole 53 in the direction along the rotation axis RA (width direction Dw). The engaging projections 71 then protrude downward from the bottom surface 53a of the housing hole 53.

[0050] Each engaging projection 71 includes a flat first flat surface 71c. The first flat surface 71c of the engaging projection 71 is a flat surface that is perpendicular to the axis of rotation RA and extends in the vertical direction Dv and the front-rear direction Da. The first flat surfaces 71c of two engaging projections 71 face each other in the direction along the axis of rotation RA.

[0051] This flat first flat surface 71c can also be described as being formed on the inner surface of the housing hole 53 and oriented in a direction intersecting the vertical direction Dv. In this embodiment, the first flat surface 71c is formed on a part of the inner circumferential surface of the housing hole 53. Furthermore, the first flat surface 71c of the housing hole 53 is oriented along the rotation axis RA, which is one of the directions perpendicular to the vertical direction Dv.

[0052] As shown in Figures 5, 9, and 10, the engaging recesses 72, like the engaging protrusions 71, are arranged in pairs at intervals from each other in an intersecting direction that intersects the vertical direction Dv. Specifically, the engaging recesses 72 are located at both ends of the top surface 62a (inner surface) of the support 62 in the direction along the rotation axis RA (width direction Dw), and are recessed downward from the top surface 62a of the support 62. The lower end of the engaging recess 72 is defined by the upper surface of the extended wall portion 67 of the support 62 described above.

[0053] Each engaging recess 72 includes a flat second flat surface 72c. The second flat surface 72c of the engaging recess 72 is a flat surface perpendicular to the axis of rotation RA and extending in the vertical direction Dv and the front-rear direction Da. The second flat surfaces 72c of the two engaging recesses 72 face opposite each other in the direction along the axis of rotation RA. The second flat surface 72c of the engaging recess 72 faces the first flat surface 71c of the engaging projection 71 when the support 62 is housed in the housing hole 53 of the leg rod 5.

[0054] This flat second flat surface 72c can also be described as being formed on the outer surface of the support 62 and oriented in a direction intersecting the vertical direction Dv. In this embodiment, the second flat surface 72c is formed on a part of the outer circumferential surface of the peripheral wall portion 68 of the support 62. Furthermore, the second flat surface 72c of the support 62 is oriented along the rotation axis RA, which is one of the directions perpendicular to the vertical direction Dv.

[0055] In Figure 5, the first flat surface 71c of the opposing engaging projection 71 and the second flat surface 72c of the engaging recess 72 are spaced apart in the direction along the rotation axis RA. As a result, when a force is applied that attempts to rotate the support 62 around the axis extending vertically Dv relative to the housing hole 53 via the wheels 61 and axle member 63 due to steps or unevenness in the floor surface F, the first flat surface 71c of the opposing engaging projection 71 and the second flat surface 72c of the engaging recess 72 are displaced relative to each other in the direction along the rotation axis RA, or in a direction inclined in plan view with respect to the direction along the rotation axis RA, and come into contact. This contact between the first flat surface 71c of the engaging projection 71 and the second flat surface 72c of the engaging recess 72 restricts the rotation of the support 62 around the axis extending vertically Dv relative to the housing hole 53. For example, in the initial assembly state in which the support 62 is placed in the housing hole 53, the first flat surface 71c of the opposing engaging projection 71 and the second flat surface 72c of the engaging recess 72 may be in contact (surface contact).

[0056] Alternatively, for example, a rib may be formed on one of the first flat surface 71c of the engaging projection 71 and the second flat surface 72c of the engaging recess 72, and the rib may be brought into contact with the other of the first flat surface 71c of the engaging projection 71 and the second flat surface 72c of the engaging recess 72. Alternatively, for example, a rib may be formed on one of the outer circumferential surface of the peripheral wall portion 68 of the support 62 and the inner circumferential surface of the receiving hole 53 facing the outer circumferential surface of the peripheral wall portion 68, and the rib may be brought into contact with the other of the outer circumferential surface of the peripheral wall portion 68 and the inner circumferential surface of the receiving hole 53. With the support 62 housed in the housing hole 53, the support 62 can be fitted into the housing hole 53 by bringing a rib formed on one of the inner circumferential surfaces of the housing hole 53 and the outer circumferential surface of the peripheral wall portion 68 into contact with the other of the inner circumferential surface of the housing hole 53 and the outer circumferential surface of the peripheral wall portion 68. This prevents the rolling portion 6A, including the support 62, from falling out of the housing hole 53. It also reinforces the fixing of the rolling portion 6A to the tip of the leg rod portion 5.

[0057] In the fixture 1 of this embodiment, which is configured as described above, the fixture 1 can be moved only in the front-rear direction Da by rolling the wheels 61 of the two rolling parts 6A on the floor surface F. In this embodiment, two of the four contact parts 6 of the fixture 1 are adjusters 6B that make surface contact with the floor surface F. Therefore, when a user moves the fixture 1 on the floor surface F, the user should grasp the portion of the top plate 4 along a predetermined side 41A and lift it to separate the adjusters 6B upward from the floor surface F, and then push or pull the top plate 4 in the front-rear direction Da (a direction perpendicular to the predetermined side 41A). This allows the fixture 1 to be moved in the front-rear direction Da.

[0058] As described above, in the fixture 1 of this embodiment, the rolling part 6A having wheels 61 and a support 62 is housed in the housing hole 53 of the fixture body 2 from below. Therefore, even if an external force acts on the rolling part 6A in a direction perpendicular to the vertical direction Dv when the fixture 1 is positioned so that the rolling part 6A is in contact with the floor surface F, it is possible to suppress problems such as the rolling part 6A shifting out of position from its predetermined position in the fixture body 2.

[0059] Furthermore, in this embodiment, the fixture 1 has a restricting means 7 that restricts the rotation of the rolling part 6A from rotating around an axis extending in the vertical direction Dv relative to the housing hole 53, and this restricting means 7 is composed of a first flat side surface 71c and a second flat side surface 72c. This makes it possible to miniaturize the mounting structure of the rolling part 6A to the fixture body 2 compared to the case where the restricting means 7 is composed of fastening means using bolts. It also makes it possible to miniaturize the leg rod portion 5 on which the rolling part 6A is provided. By miniaturizing the leg rod portion 5, it is possible to make the leg rod portion 5 thinner in the vertical direction Dv.

[0060] Furthermore, the top-mounted fixture 1 of this embodiment has an engaging projection 71 and an engaging recess 72 as restricting means 7. This allows the engaging projection 71 and the engaging recess 72 to restrict the rotation of the rolling part 6A around the axis extending in the vertical direction Dv relative to the housing hole 53. In addition, since the engaging projection 71 and the engaging recess 72 have first and second flat surfaces 71c and 72c facing each other, the rotation of the rolling part 6A can be reliably restricted even if there is only one engaging projection 71 and one engaging recess 72.

[0061] Furthermore, in the fixture 1 of this embodiment, the engaging protrusions 71 and engaging recesses 72 that constitute the regulating means 7 are each arranged in pairs, spaced apart from each other in an intersecting direction that intersects the vertical direction Dv. With this configuration, when the two engaging protrusions 71 are engaged with the two engaging recesses 72, a portion of the support 62 can be sandwiched between the two engaging protrusions 71 formed in the housing hole 53 in the intersecting direction that intersects the vertical direction Dv (see Figure 5). This ensures that the rolling portion 6A, including the support 62, does not rotate around an axis extending in the vertical direction Dv relative to the fixture body 2 when the support 62 is housed in the housing hole 53 of the fixture body 2.

[0062] Furthermore, in the fixture 1 of this embodiment, the engaging projections 71 are positioned at both ends of the inner surface of the housing hole 53 in the direction along the rotation axis RA (width direction Dw), and protrude downward from the inner surface of the housing hole 53. The engaging recesses 72 are positioned at both ends of the outer surface of the support 62 in the direction along the rotation axis RA, and are recessed downward from the outer surface of the support 62. With this configuration, when the support 62 is housed in the housing hole 53 of the fixture body 2, it is possible to reliably prevent the rolling part 6A, including the support 62, from rotating around an axis extending in the vertical direction Dv relative to the fixture body 2.

[0063] Furthermore, when the two engaging protrusions 71 and the two engaging recesses 72 are aligned along the rotation axis RA, the mounting structure of the rolling part 6A to the fixture body 2 can be made smaller compared to when they are aligned perpendicular to the rotation axis RA in a plan view (front-to-back direction Da). This point will be explained below. In order to minimize the height dimension of the rolling part 6A in the vertical direction Dv, it is necessary to position the two engaging recesses 72 provided on the support 62 on the outside of the wheel 61 when viewed from the vertical direction Dv, so that the two engaging recesses 72 do not interfere with the wheel 61. In this case, positioning the two engaging recesses 72 at both ends of the outer surface of the support 62 in the direction along the rotation axis RA (width direction Dw) allows for a smaller spacing between the two engaging recesses 72 compared to positioning them at both ends of the outer surface of the support 62 in the direction of the wheel 61's rolling (front-rear direction Da). This makes it possible to miniaturize the mounting structure of the rolling part 6A to the fixture body 2.

[0064] Furthermore, if the dimensions of the rolling portion 6A in the rolling direction of the wheel 61 are kept constant, arranging the two engaging recesses 72 at both ends of the outer surface of the support 62 in the direction along the rotation axis RA allows for a larger dimension of the wheel 61 in the rolling direction, i.e., the diameter of the wheel 61, compared to arranging the two engaging recesses 72 at both ends of the outer surface of the support 62 in the rolling direction of the wheel 61. By allowing for a larger diameter of the wheel 61, the operability when moving the furniture while rolling the wheel 61 on the floor surface F can be improved.

[0065] Furthermore, in the fixture 1 of this embodiment, the support 62 of the rolling part 6A has a pair of side wall portions 65 located on both sides of the wheel 61 in the direction along the rotation axis RA, on which a shaft member 63 that rotatably supports the wheel 61 is mounted, and a top wall portion 66 located above the wheel 61 and connected to the pair of side wall portions 65. Each of the pair of side wall portions 65 has an extended wall portion 67 that extends outward from the support 62 in the direction along the rotation axis RA from a portion above the mounting portion 651 of the side wall portion 65 on which the shaft member 63 is mounted and below the top wall portion 66. The lower end of the engagement recess 72 is defined by the extended wall portion 67.

[0066] In this configuration, when the rolling part 6A is housed in the housing hole 53 and the engaging projection 71 of the housing hole 53 engages with the engaging recess 72 of the support 62, the lower end of the engaging projection 71 abuts against the upper surface of the extended wall portion 67 which forms the lower end of the engaging recess 72, thereby causing the load of the fixture body 2 to act on the upper surface 4a of the extended wall portion 67. Here, the extended wall portion 67 extends outward from the support 62 in a direction along the rotation axis RA from the portion of the side wall portion 65 above the mounting portion 651 of the shaft member 63. Therefore, the load of the fixture body 2 acting on the upper surface of the extended wall portion 67 can be prevented from being transmitted to the mounting portion 651 of the side wall portion 65. In other words, the load acting on the mounting portion 651 of the side wall portion 65 can be reduced. This protects the mounting portion 651 of the side wall portion 65. Furthermore, if, for example, the extended wall portion 67 also includes the erection portion 651 of the side wall portion 65, the load transmitted to the erection portion 651 will be large. Therefore, if there are molding defects in the engaging recess 72 or the erection portion 651 of the side wall portion 65, the large load may cause problems such as cracking in the support 62.

[0067] Furthermore, in the fixture 1 of this embodiment, a surface joining member 8 is interposed between the bottom surface 53a of the downward-facing housing hole 53 and the top surface 62a of the support 62 that faces upward and is opposite the bottom surface 53a, joining the bottom surface 53a and the top surface 62a. As a result, the rolling part 6A is fixed to the fixture body 2 by the surface joining member 8, and it is possible to reliably prevent the rolling part 6A from falling downward from the fixture body 2. Furthermore, by fixing the rolling part 6A to the fixture body 2 with the surface joining member 8, the mounting structure of the rolling part 6A to the fixture body 2 can be made smaller (especially lower in height) compared to the case where the rolling part 6A is fixed to the fixture body 2 using fastening means using bolts.

[0068] Furthermore, by housing the support 62 in the housing hole 53, even if an external force acts on the rolling part 6A (for example, the wheel 61) in a direction perpendicular to the vertical direction Dv, it is possible to prevent the top surface 62a of the support 62 from peeling off from the bottom surface 53a of the housing hole 53 against the joining force of the surface joining member 8 based on that external force. Furthermore, since the surface joint member 8 is located inside the housing hole 53, it is difficult to see from the outside of the fixture body 2. This prevents the appearance of the fixture 1 from being degraded by the presence of the surface joint member 8.

[0069] Furthermore, in the fixture 1 of this embodiment, the surface joining member 8 is compressible and deformable in the direction in which the bottom surface 53a of the housing hole 53 and the top surface 62a of the support 62 are aligned. Therefore, even if the shapes of the top surface 62a of the support 62 and the bottom surface 53a of the housing hole 53 do not match due to factors such as molding defects (for example, if the top surface 62a and the bottom surface 53a are not parallel), the surface joining member 8 can compressively deform as appropriate to ensure the joint strength between the top surface 62a and the bottom surface 53a.

[0070] Furthermore, the fixture 1 of this embodiment also functions as a fixture with a top panel. Hereafter, fixture 1 will be described as "fixture 1 with a top panel". In the fixture with a top plate 1 of this embodiment, the top plate 4 is formed in a rectangular shape in plan view, and four leg rods 5 extend from the lower end of the upright portion 3 (support column portion 31) toward the four corners 43 of the top plate 4 in plan view. The wheels 61 of two rolling parts 6A, which are provided at the ends of two leg rods 5 in the extension direction Dll and are aligned along a predetermined side 41A of the top plate 4, roll only in a direction perpendicular to the predetermined side 41A (front-back direction Da) in plan view. In other words, the direction of rotation of the wheels 61 of the two rolling parts 6A is limited to the direction perpendicular to the predetermined side 41A in plan view. Therefore, the user of the fixture with a top plate 1 can easily move the fixture with a top plate 1 along the floor surface F in a direction perpendicular to the predetermined side 41A while gripping the portion of the top plate 4 along the predetermined side 41A, that is, the fixture with a top plate 1 can be stably moved in a specific direction. Therefore, it is possible to ensure the mobility of the fixture with a top plate 1 when it is desired to move it in a specific direction.

[0071] Furthermore, in the tabletop-equipped fixture 1 of this embodiment, the upright portion 3 (support column portion 31) is located in the center of the tabletop 4 in a plan view. Also, the four leg rod portions 5 extend linearly from the lower end of the upright portion 3 (support column portion 31) toward the four corners 43 of the tabletop 4 in a plan view. As a result, even if a user of the tabletop-equipped fixture 1 places their feet under the tabletop 4 from any of the four sides 41, 42 of the tabletop 4, interference between the user's feet and the upright portion 3 (support column portion 31) and leg rod portions 5 can be more effectively suppressed or prevented. Therefore, the user can use the tabletop-equipped fixture 1 more comfortably.

[0072] Furthermore, in the fixture with a top plate 1 of this embodiment, in a plan view, the direction of rotation of the wheels 61 that roll in a direction perpendicular to a predetermined side 41A of the top plate 4 is along a second imaginary line VL2 that bisects the interior angle θ formed by the first leg rod 5A and the second leg rod 5B, which are provided with two rolling parts 6A among the four linearly extending leg rods 5. In this configuration, in a plan view, the direction of rotation of the wheels 61 does not tilt toward the first leg rod 5A side or the second leg rod 5B side with respect to the second imaginary line VL2, so the fixture with a top plate 1 can be easily moved in a specific direction compared to the case where it is tilted.

[0073] Furthermore, in the tabletop-equipped fixture 1 of this embodiment, the leg rod portion 5 is formed in a shape that tapers towards the tip in the extension direction Dll of the leg rod portion 5. Therefore, compared to the case where the entire leg rod portion 5 is formed with the same thickness, the leg rod portion 5 appears slimmer, thus providing a tabletop-equipped fixture 1 with a good appearance design. Furthermore, as mentioned above, by miniaturizing the mounting structure of the rolling part 6A to the tip of the leg rod 5 (fixture body 2), it becomes possible to easily form the leg rod 5 into a shape that becomes thinner towards the tip in its extension direction.

[0074] Furthermore, in the tabletop-equipped fixture 1 of this embodiment, the pair of side surfaces 51 of each leg rod 5 are inclined so as they move from the upper end to the lower end of the leg rod 5, they approach the opposing side surface 51 of the leg rod 5. Therefore, when the leg rod 5 is viewed from diagonally above, the inclined side surfaces 51 of the leg rod 5 become difficult to see or appear smaller. As a result, the leg rod 5 appears thinner than its actual thickness. In other words, the leg rod 5 appears slim, making it possible to provide a tabletop-equipped fixture 1 with a good appearance design. Furthermore, in the fixture 1 with a top plate of this embodiment, the leg rod portion 5 can be made to appear slim while ensuring sufficient thickness for forming the housing hole 53 for the rolling part 6A.

[0075] Furthermore, in the tabletop-equipped fixture 1 of this embodiment, two of the four contact points 6 are adjusters 6B having contact surfaces 6B1 that make surface contact with the floor surface F. With this configuration, when the adjusters 6B are in contact with the floor surface F, it is possible to suppress the unexpected movement of the tabletop-equipped fixture 1 along the floor surface F due to frictional force between the floor surface F and the contact surface 6B1.

[0076] In the tabletop-equipped furniture unit 1 of this embodiment, the upright portion 3 connecting the four leg rods 5, which are positioned on the floor surface F via the ground contact portion 6, and the tabletop 4, which is located above the four leg rods 5, is a single support column 31 extending in the vertical direction Dv. Therefore, even if a user of the tabletop-equipped furniture unit 1 places their feet under the tabletop 4, interference between the user's feet and the support column 31 can be suppressed. Consequently, the user can use the tabletop-equipped furniture unit 1 comfortably.

[0077] Although embodiments of the present invention have been described above, the present invention is not limited to the embodiments described above and can be modified as appropriate without departing from the spirit of the invention.

[0078] In the present invention, for example, the engaging projection 71 and engaging recess 72 constituting the restricting means 7 may be arranged in pairs, for example, with a gap between them in the front-rear direction Da.

[0079] In the present invention, the number of engaging projections 71 and engaging recesses 72 may be, for example, one each, or three or more each.

[0080] In the present invention, for example, the engaging projection 71 constituting the regulating means 7 may be provided on the support 62, and the engaging recess 72 may be provided on the housing hole 53. Specifically, the engaging projection 71 may protrude upward (to one side in the vertical direction Dv) from the outer surface of the support 62 facing the inner surface of the housing hole 53 when the support 62 of the rolling part 6A is housed in the housing hole 53 of the leg rod 5. Alternatively, the engaging recess 72 may be recessed upward (to one side in the vertical direction Dv) from the inner surface of the housing hole 53 facing the outer surface of the support 62 when the support 62 of the rolling part 6A is housed in the housing hole 53 of the leg rod 5.

[0081] In the present invention, the restricting means 7 only needs to have at least a first flat surface 71c and a second flat surface 72c, and does not need to have an engaging projection 71 and an engaging recess 72.

[0082] In the present invention, the first flat surface 71c formed on the inner surface of the housing hole 53 may be arranged in multiples, for example, in the circumferential direction of the housing hole 53 (in the direction around the axis extending in the vertical direction Dv). Similarly, the second flat surface 72c formed on the outer surface of the support 62 may be arranged in multiples, for example, in the circumferential direction of the support 62 (in the direction around the axis extending in the vertical direction Dv). That is, the plan view shape of the housing hole 53 and the support 62 as seen from the vertical direction Dv may be polygonal. Even with such a configuration, the same effects as in the above embodiment can be achieved.

[0083] In the present invention, the first flat surface 71c formed on the inner surface of the accommodating hole 53 and the second flat surface 72c formed on the outer surface of the support 62 may be oriented in a direction that is inclined with respect to the vertical direction Dv, rather than in a direction perpendicular to the vertical direction Dv.

[0084] In the present invention, it is sufficient that at least one of the pair of side surfaces 51 of the leg rod portion 5 is inclined to approach the other side surface 51 of the leg rod portion 5 as it moves from the upper end to the lower end. Even with such a configuration, as in the above embodiment, the apparent thickness of the leg rod portion 5 when viewed from diagonally above on one side surface 51 of the leg rod portion 5 can be made smaller than the actual thickness of the leg rod portion 5. This makes it possible to provide a fixture with a top plate that has a good appearance.

[0085] In the present invention, the four leg rods 5 are not limited to being formed radially in a plan view, but may be formed in any shape. The four leg rods 5 may be formed in an H shape in a plan view, for example. In order to form the four leg rods 5 in an H shape, for example, the following can be done: The four leg rods 5 are divided into two sets of two leg rods 5 so that two leg rods 5 make up one set. The base ends of the two leg rods 5 in each set are formed integrally, and the tips of these two leg rods 5 are formed separately. The base ends of the integrated leg rods 5 of the two sets are extended from the lower end of the support column 31 in different directions (for example, opposite directions), and the tips of the two leg rods 5 formed separately in the same set are extended to positions corresponding to two different corners 43 of the top plate 4 (for example, two adjacent corners 43 along sides 41 and 42 of the top plate 4).

[0086] In the present invention, the upright section 3 may include, for example, a plurality of support sections 31 extending in the vertical direction Dv, and connecting sections that connect adjacent support sections 31. In such a configuration, the number of support sections 31 is preferably, for example, two or four. For example, if there are two support sections 31, in a plan view, two leg sections 5 may extend from the lower end of the same support section 31 toward different corners 43 of the tabletop 4. For example, if there are four support sections 31, the four leg sections 5 may extend from the lower ends of different support sections 31 toward different corners 43 of the tabletop 4 in a plan view.

[0087] In the present invention, the number of leg rods 5 and ground contact portions 6 is not limited to four, but may be at least one. Furthermore, the number of rolling portions 6A among the multiple ground contact portions 6 may be at least one. Alternatively, for example, all ground contact portions 6 may be rolling portions 6A.

[0088] In the present invention, the planar shape of the top plate 4 is not limited to a square, but may be any shape such as a rectangle, trapezoid, circle, or ellipse.

[0089] The present invention is not limited to fixtures with a top plate, but may be applied to other fixtures such as cabinets and chairs. If the fixture of the present invention is a cabinet, the cabinet may be constructed by providing a plurality of ground contact points on the underside of a box-shaped cabinet body which serves as the fixture body. If the fixture of the present invention is a chair, the chair may have a fixture body including a seat and legs extending downward from the seat, and a plurality of ground contact points provided on the underside of the legs. [Explanation of symbols]

[0090] 1. Fixtures 2. Main body of the fixture 3 Standing part 4 Top plate 5 Leg stem 5A First leg rod 5B Second leg rod 6 Grounding part 6A Rolling part 6B Adjuster 6B1 Contact surface 7. Regulatory measures 8-sided joint member 31 Pillar section 41, 42 sides 41A Specified side 43 corners 51 Side view 53 Intake 53a Bottom 61 wheels 62 Support 62a top surface 63 Shaft member 65 Side wall section 66 Top wall section 67 Extending wall section 71 Engagement protrusion 71c First flat side 72 Engaging recess 72c Second flat side 651 Erection part Da (forward and backward direction) Dv vertical direction Dw width direction F Floor RA rotation axis VL virtual line θ interior angle

Claims

1. The fixture itself and The fixture body is provided with a plurality of contact points that are located on the lower side and come into contact with the floor surface, At least one of the ground contact parts is a rolling part having a wheel that rolls on the floor surface, The rolling part comprises the wheel and a support that pivotally supports the wheel so as to be rotatable about a rotation axis that intersects the wheel in the vertical direction, and supports it so as not to be rotatable about the axis extending in the vertical direction. The fixture body has a bottomed hole that is recessed upward from the lower end of the fixture body, and has a housing hole in which at least a part of the support is housed. The support is further provided with a restricting means for restricting the rolling portion from rotating around an axis extending vertically relative to the housing hole while the support is housed in the housing hole, The regulating means comprises a first flat surface formed on the inner surface of the housing hole and facing in a direction intersecting the vertical direction, and a second flat surface formed on the outer surface of the support and facing in a direction intersecting the vertical direction, the second flat surface facing the first flat surface when the support is housed in the housing hole.

2. The fixture according to claim 1, wherein the restricting means includes an engaging projection that protrudes to one side in the vertical direction from one of the outer surfaces of the support and the inner surface of the support hole, which are opposite to each other when the support is housed in the housing hole, and an engaging recess that is recessed to one side in the vertical direction from the other of the outer surfaces of the support and the inner surface of the housing hole and engages with the engaging projection, wherein one of the engaging projection and the engaging recess includes the first flat surface, and the other of the engaging projection and the engaging recess includes the second flat surface.

3. The engaging protrusions are arranged in pairs, spaced apart from each other in the intersecting direction that crosses the vertical direction. The fixture according to claim 2, wherein the engaging recesses are arranged in pairs at intervals from each other in the intersecting direction.

4. The engaging projections are positioned at both ends of the inner surface of the housing hole in the direction along the axis of rotation, and protrude downward from the inner surface of the housing hole. The fixture according to claim 2, wherein the engaging recesses are arranged at both ends of the outer surface of the support in a direction along the axis of rotation and are recessed downward from the outer surface of the support.

5. The aforementioned support is A pair of side wall portions are located on both sides of the wheel in the direction along the rotation axis, and a shaft member is mounted on which the wheel is rotatably supported. It has a top wall portion located above the wheel and connected to a pair of the side wall portions, Each of the side wall portions has an extended wall portion that extends outward from the support in a direction along the axis of rotation from a portion of the side wall portion that is above the portion on which the shaft member is installed and below the top wall portion, The fixture according to claim 4, wherein the lower end of the engagement recess is defined by the extended wall portion.

6. The aforementioned receiving hole has a bottom surface facing downwards, The support has a top surface facing upward and opposite to the bottom surface, The fixture according to any one of claims 1 to 5, wherein a surface joining member is interposed between the top surface and the bottom surface to join the top surface and the bottom surface.

7. The fixture according to claim 6, wherein the surface joining member is compressible and deformable in the direction in which the top surface and the bottom surface are aligned.

8. The aforementioned fixture body, The aforementioned upright portion extending in the vertical direction, A top plate supported from below by the upright portion, It comprises a plurality of leg rods extending from the lower end of the upright portion in a direction intersecting the vertical direction, The ground contact portion is provided at the tip of each of the multiple leg rods in the direction of extension. The fixture according to any one of claims 1 to 5, wherein at least one of the grounding portions is the rolling portion.

Images