WO2022085229A1

WO2022085229A1 - Furniture set-down device and furniture

Info

Publication number: WO2022085229A1
Application number: PCT/JP2021/017727
Authority: WO
Inventors: 英一渡部
Original assignee: コクヨ株式会社
Priority date: 2020-10-23
Filing date: 2021-05-10
Publication date: 2022-04-28
Also published as: JP2022068931A

Abstract

For the purpose of providing a durable furniture set-down device, which is suitable for use with school desks and other furniture and is capable of appropriately preventing or limiting wobbling of the furniture without causing an increase in size thereof, the present invention provides a furniture set-down device 4 that is equipped with: a housing 5, which is to be provided on the bottom of the furniture; a rotary member 6, which is supported by the housing 5 so as to allow up-down rotation and the lower surface of which comprises a set-down part 62 that contacts the floor surface; and an elastic member 7, which is disposed inside the housing 5 and which has a viscoelastic property and is compressed by rotation of the rotary member 6.

Description

Grounding device for furniture and furniture

The present invention is a furniture grounding device preferably used for furniture such as school desks, and furniture in which such a grounding device is attached to the bottom surface.

Many conventional school desks are equipped with an adjuster to prevent so-called rattling during use, but with a normal adjuster, the adjuster is adjusted appropriately each time the desk is moved. Otherwise, it is troublesome that rattling cannot be prevented (see, for example, Patent Document 1).

In order to solve such problems, a grounding body that can be raised and lowered by an oil damper has been developed at the tip of the adjuster, but the oil damper has low durability and easily causes problems such as oil leakage. ..

As a measure to deal with such a problem, a grounding device that compresses the elastic member with an elevating grounding body can be considered, but in the usual way of thinking, the elastic member is compressed in the vertical direction by the elevating grounding body. There is a risk of increasing the size of the device (Problem 1).

In addition, there is a request for such a grounding device to appropriately follow the unevenness of the floor surface. Specifically, I would like the grounding body to have a sufficient stroke so that it can quickly respond to the unevenness of the floor surface. There are various requests such as preventing the desk from swinging fluffy during use because it is too hard and rattling remains or it is too soft. However, if the solid elastic member is used only in a common sense manner, the size and characteristics of the elastic member must be selected to meet the demand, and if the dimensions of the device are limited, the response is naturally made. There is a difficulty that a limit is created (Problem 2).

Such issues exist not only in school desks used by students, but also in other furniture.

Japanese Unexamined Patent Publication No. 11-206472

The invention according to claim 1 aims to solve the above-mentioned problem 1. Further, the invention according to claim 3 attempts to solve the above-mentioned problem 2 in addition to the problem 1.

The grounding device for furniture according to the invention according to claim 1 is disposed in the housing, a rotating member having a grounding body rotatably supported by the housing and grounded to the floor on the lower surface side. It is provided with an elastic member having viscoelasticity that is compressed by the rotation of the rotating member.

The grounding device for furniture according to the invention according to claim 2 is the one according to claim 1, wherein the housing has a space in which the ceiling surface is curved in accordance with the rotation locus of the rotating member. The elastic member is accommodated in the space of the housing in a curved posture along the ceiling surface, and one end of the elastic member is brought into contact with the upper surface of the rotating member. At the same time, the other end is brought into contact with the upright surface of the housing that intersects the end of the ceiling surface.

In the present invention, "corresponding to the rotation locus" is a concept that includes not only the one that is the same as the rotation locus but also the one that approximates the rotation locus.

The grounding device for furniture according to the invention according to claim 3 is the one according to

claim

1 or 2, and the grounding position of the grounding body changes with the rotation of the rotating member. It is equipped with a grounding cam surface.

The grounding device for furniture according to the invention according to claim 4 is the one according to

claim

1, 2 or 3, wherein the rotating member has support shafts protruding from both sides of the base end, and the support shaft thereof. Is pivotally supported on both side walls of the housing and arranged at the lower end opening of the space.

The grounding device for furniture according to the invention according to claim 5 is the one according to claim 4, wherein the rotating member is held in the housing by a lid mounted on the lower surface of the housing. The lid is provided with a window for projecting the grounding body of the rotating member to the outside.

The furniture grounding device according to the invention of claim 6 is the one according to

claim

4 or 5, wherein the housing and the lid are jointly fastened and fixed to the furniture by a common bolt. A temporary fixing element for preventing the lid from falling off before being fixed by the bolt is provided between the housing and the lid.

The furniture grounding device according to the invention according to claim 7 is the one according to

claim

1, 2, 3, 4, 5 or 6, wherein the elastic member is made of urethane gel, low-resilience urethane or elastomer. It was made.

The furniture according to the invention according to claim 8 is equipped with the furniture grounding device according to 1, 2, 3, 4, 5, 6 or 7 which expands and contracts independently from each other at a plurality of places on the bottom surface.

The furniture according to the invention according to claim 9 is the one according to claim 8, and the furniture grounding device is attached to four places on the bottom surface.

According to the present invention, it is possible to provide a highly durable furniture grounding device capable of appropriately preventing or suppressing rattling of furniture without causing an increase in size.

The side view which shows the desk which attached the grounding apparatus which concerns on one Embodiment of this invention. The perspective view which shows the desk which attached the grounding device which concerns on the said embodiment. The side view which shows the grounding apparatus which concerns on the same embodiment. X arrow view in FIG. FIG. 4 is a sectional view taken along line YY in FIG. The perspective view which shows the grounding apparatus which concerns on the same embodiment. An exploded perspective view showing a grounding device according to the same embodiment. The operation explanatory view of the grounding apparatus which concerns on the same embodiment. Explanatory drawing which shows the compression direction of the elastic member which concerns on this embodiment. The side view which shows the grounding apparatus which concerns on other embodiment of this invention. The α arrow view in FIG. FIG. 11 is a sectional view taken along line β-β. An exploded perspective view showing a grounding device according to the same embodiment.

An embodiment of the present invention will be described with reference to FIGS. 1 to 9.

In this embodiment, the furniture grounding device 4 according to the present invention is attached to a desk D for a school, which is furniture.

As shown in FIGS. 1 and 2, the desk D is for school children to be placed on the floor surface F of the classroom, and the left and right legs 1 support the top plate 2 and the left and right desks D are used. The curtain plate 3 is erected between the portions near the upper end of the leg body 1.

As shown in FIGS. 1 and 2, the left and right leg bodies 1 have leg columns 12 erected from the inside of the rear end portion of the leg base 11, respectively, and the leg columns 12 are erected at the front end portion and the rear end portion of the leg base 11, respectively. A grounding device 4 for furniture is provided.

As shown in FIGS. 3 to 7, the furniture grounding device 4 is supported by a housing 5 provided on a leg base 11 which is the bottom of furniture and rotatably supported by the housing 5, and is supported on a floor surface F on the lower surface side. It includes a rotating member 6 having a grounding body 62 to be grounded, and an elastic member 7 having viscoelasticity, which is arranged in a housing 5 and compressed by upward rotation of the rotating member 6.

As shown in FIGS. 5 and 7, the housing 5 is provided with a space 5s in which the ceiling surface 5a is curved so as to correspond to the rotation locus 6k of the rotating member 6, and the elastic member 7 is provided with a space 5s. It is housed in the space 5s of the housing 5 in a curved posture along the ceiling surface 5a. One end 7a of the elastic member 7 is in contact with the upper surface 6a of the rotating member 6, and the other end 7b is in contact with the upright surface 5b of the housing 5 intersecting the end of the ceiling surface 5a. The housing 5 is, for example, a box-shaped one integrally made of synthetic resin, has bolt insertion holes 5c penetrating vertically at both ends, and has the above-mentioned space 5s in an intermediate region. The space 5s is open downward, and the ceiling surface 5a is formed on the outside of the rotation locus 6k of the rotating member 6 so as to be close to the rotation locus 6k. The ceiling surface 5a is composed of an upright one-sided flat surface portion 5a1, a cylindrical surface portion 5a2 continuous with the one-end side flat surface portion 5a1, and a horizontal other end side flat portion 5a3 continuous with the columnar surface portion 5a2. The end of the other end side plane portion 5a3 is orthogonal to the vertical upright surface 5b. As shown in FIGS. 4 to 7, peripheral protrusions 5d1 are formed on the lower surface of the housing 5, that is, the bottom surface 5d, and a lid 8 to be described later is formed in a region surrounded by the peripheral protrusions 5d1. It is fitted. The rotating member 6 is housed in the bottom of the housing 5 having such a configuration so as to be rotatable up and down.

As shown in FIG. 7, the rotating member 6 has support shafts 61a projecting from both sides of the base end, and the support shafts 61a are pivotally supported in a pivot groove 5f formed on both side walls 51 of the housing 5. It is arranged in the lower end opening of the space 5s. More specifically, as shown in FIGS. 5 and 7, the rotating member 6 includes a member main body 61 having a support shaft 61a at the base end and a grounding body 62 projecting from the lower surface of the member main body 61. Is integrally provided, for example, it is integrally made of synthetic resin. A pivot groove 5f that rotatably supports both support shafts 61a of the rotating member 6 is formed on both inner side surfaces 5e forming the space 5s of the housing 5 described above. The lower end of both pivot grooves 5f is opened to the bottom surface 5d of the housing 5, and the rotating member 6 is attached to the housing 5 by engaging both support shafts 61a with both pivot grooves 5f from below. Can be done. The grounding body 62 is provided so as to hang downward from the member main body 61, and a grounding cam surface 62a whose contact position with the floor surface F changes as the rotating member 6 rotates is formed on the lower surface thereof. ing. The grounding body 62 of this embodiment has a form in which the width gradually narrows toward the lower end. The rotating member 6 is held in the housing 5 by a lid 8 mounted on the bottom surface 5d of the housing 5, and the grounding body 62 of the rotating member 6 is projected outward from the lid 8. Window 8a is provided. As shown in FIGS. 6 and 7, the housing 5 and the lid 8 are plate-shaped and are fixed together to the leg base 11 of the desk D by a common bolt 9, and the housing 5 and the lid 8 are together. A temporary fixing element K is provided between the lids 8 to prevent the lid 8 from falling off from the housing 5 before being fixed by the bolt 9. In the case of this embodiment, the temporary fixing element K is formed by inclining the inner peripheral surface 5d2 of the peripheral protrusion 5d1 of the housing 5 and the outer peripheral surface 8b of the lid 8 in a dovetail shape, and is a temporary member. The lid 8 is engaged with the inside of the peripheral protrusion 5d1 by utilizing the elastic deformation. As shown in FIGS. 4 to 7, the lid 8 has a rectangular flat plate shape, has screw insertion holes 8c matching the bolt insertion holes 5c of the housing 5 at both ends, and is described above in the intermediate region. It is provided with a window 8a. 6c is the rotation center of the rotating member 6.

The elastic member 7 is made of, for example, low-resilience urethane, and as shown in FIGS. 5 and 7, the prismatic block is curved and deformed along the ceiling surface 5a of the housing 5 so as to be inside the space 5s of the housing 5. Is housed in. The elastic member 7 may be manufactured by punching a thick plate material. In that case, the initial shape becomes a curved shape as shown in the illustrated example. More specifically, the elastic member 7 in the housed state has one end 7a in contact with the upper surface 6a on the rotating end side of the rotating member 6 and the other end 7b in contact with the upright surface 5b of the housing 5. It is housed in the space 5s of the housing 5.

The grounding device 4 described above is attached to the rear end portion and the front end portion of the left and right leg bodies 1 of the desk D, respectively. Specifically, as shown in FIG. 6, the leg base 11 of each leg body 1 is formed with recessed portions 11a into which the housing 5 can be fitted from below, and the recessed portions 11a are formed in the recessed portions 11a. The fitted housing 5 is fastened and fixed to the leg base 11 together with the lid 8 by a common bolt 9. In the case of this embodiment, in the grounding device 4 mounted on the rear end portion of the leg base 11, the rotating end of the rotating member 6 faces backward, and the grounding device 4 mounted on the front end portion of the leg base 11 is a grounding device 4. The rotating end of the rotating member 6 is set to face forward.

Here, when the rotating member 6 touches the ground and rotates, one end 7a of the elastic member 7 is pressed against the upper surface 6a on the rotating end side of the rotating member 6, and the other end 7b is between the upright surface 5b and the contact surface. Compressed with. At this time, the elastic member 7 partially expands due to elastic deformation, but the expansion margin is provided in the portion above the rotation center 6c in FIG. 5, and the distance between the side walls 51 of the housing 5 is set to the absence of the elastic member 7. Since the elastic member 7 is provided with expansion margins on both sides in the thickness direction by making it larger than the thickness dimension in the loaded state, the rotating member 6 rotates greatly while receiving an appropriate resistance from the elastic member 7. can do.

Note that FIG. 1 is a side view of a desk D in which a plurality of such grounding devices 4 are mounted at necessary locations, and FIG. 2 is a perspective view of the desk D observed from below. 3 is a side view showing one of the grounding devices 4, FIG. 4 is an arrow view of X in FIG. 3, FIG. 5 is a sectional view taken along line YY in FIG. 4, and FIG. 6 is an observation of the grounding device 4 from below. It is a perspective view. FIG. 7 is an exploded perspective view of the grounding device 4. 3 to 6 are shown in a no-load state in which the grounding body 62 is not in contact with the floor surface F for convenience of explanation, and FIG. 8A schematically shows this state. be. FIG. 8B schematically shows a state in which the ground contact body 62 is sunk and the elastic member 7 is compressed by receiving a reaction force from the floor surface F. FIG. 9 shows the compression direction of the elastic member 7 according to the present embodiment (the compression direction line in which the compression directions of each part are continuous is indicated by a) and the compression direction of the virtual elastic member 7 (the compression direction of each part is continuous). It is explanatory drawing for comparison with (the compression direction line shown by b).

With such a configuration, since the ground contact body 62 is recessed with respect to the floor surface F by the elastic repulsive force of the elastic member 7 having viscoelasticity, there is no concern about oil leakage and the hydraulic damper. Higher durability can be ensured compared to the type grounding device.

Moreover, since the elastic member 7 is compressed by the grounding body 62 that performs a rotating operation instead of the grounding body 62 that moves in the vertical direction, the compression direction of the elastic member 7 is the rotation locus of the rotating member 6. It is possible to make it non-linear corresponding to 6k. Therefore, even if a large length dimension in the compression direction of the elastic member 7 is secured, an increase in the height dimension of the entire grounding device can be suppressed. For example, as in this embodiment, the inside of the leg base 11 It is convenient when it is housed in. Specifically, the substantially length dimension in the compression direction of the elastic member 7 of this embodiment corresponds to the length dimension of the curved line a in FIG. 9, but has the same length dimension in the compression direction (FIG. 9). When a linear columnar elastic member 7 having the length dimension of the line segment b) is used, the height dimension of the entire grounding device must be increased. Therefore, according to the grounding device 4 according to the present invention, it is possible to promote the compactification of the entire device without difficulty. That is, according to the configuration of the grounding device 4, the vertical dimension of the entire device can be reasonably reduced as compared with the case where the linear elastic member is compressed in the vertical direction by the grounding body that moves up and down linearly.

Further, since the grounding body 62 is formed with a grounding cam surface 62a whose contact position with the floor surface F changes with the rotation of the rotating member 6, the distance dimension of the housing 5 with respect to the floor surface F is determined. The relationship with the compression dimension of the elastic member 7 by the rotating member 6 can be set to a relationship other than the direct proportion. Therefore, it is possible to change the elastic rebound characteristic of the elastic member 7 by variously changing the shape of the cam surface 62a, and there is an advantage that it is easy to design the grounding device 4 having the optimum characteristics. That is, according to the configuration of the grounding device 4, the grounding position of the grounding body 62 changes with the change of the compression dimension of the elastic member 7. Therefore, by changing the shape of the cam surface 62a of the grounding body 62, the elastic member The relationship between the compression dimension of 7 and the elevating dimension of the housing 5 can be adjusted. Therefore, it becomes easy to set the elastic rebound characteristic of the elastic member 7 to the optimum one.

Further, in this embodiment, since the low-resilience urethane is used as the elastic member 7, the elastic member 7 can exert the function of combining the spring and the damper. Therefore, it is possible to effectively suppress an event in which the entire desk D swings indefinitely, and it is also possible to sunk the ground contact body 62 with a relatively large stroke to quickly respond to the non-landing of the floor surface F. Will be.

The present invention is not limited to the embodiment described above, and various modifications can be made without departing from the spirit of the present invention.

For example, a furniture grounding device A4 having the configuration described below with reference to FIGS. 10 to 13 can be considered.

This is different from the furniture grounding device 4 of the above-described embodiment in the following points, and has the same configuration as the furniture grounding device 4 of the above-described embodiment in other respects. The same or corresponding parts as those in the furniture grounding device 4 of the above-described embodiment are designated by the same reference numerals, and the description thereof will be omitted.

The furniture grounding device A4 includes a housing A5 provided at the bottom of the furniture, a rotating member 6 having a grounding body 62 rotatably supported by the housing A5 and grounded to the floor on the lower surface side, and a housing A5. It is provided with an elastic member 7 which is disposed inside and has a viscous elasticity that is compressed by the upward rotation of the rotating member 6.

As shown in FIGS. 12 and 13, the housing A5 is provided with a space A5s in which the ceiling surface A5a is curved so as to correspond to the rotation locus 6k of the rotating member 6, and the elastic member 7 is provided with a space A5s. It is housed in this space A5s in a curved posture along the ceiling surface A5a. Further, the housing A5 is, for example, a box-shaped one integrally made of synthetic resin, has bolt insertion holes A5c penetrating vertically at both ends, and has the above-mentioned space A5s in an intermediate region. The space A5s is open downward, and the ceiling surface A5a is formed on the outside of the rotation locus 6k of the rotating member 6 so as to be close to the rotation locus 6k. The ceiling surface A5a is composed of an upright one-sided flat surface portion A5a1, a columnar surface portion A5a2 continuous with the one-end side flat surface portion A5a1, and a horizontal other end side flat portion A5a3 continuous with the columnar surface portion A5a2. The end of the other end side plane portion A5a3 is orthogonal to the vertical upright surface A5b. As shown in FIGS. 12 and 13, a ridge A5d1 is formed on the lower surface of the housing A5, that is, the bottom surface A5d so as to surround the opening edge of the space A5s, and a lid described later is formed on the outer peripheral surface of the ridge A5d1. An elastically engageable engaging protrusion A52 is provided so as to project from the engaging recess A8d of the body A8. The rotating member 6 is housed in the bottom of the housing A5 having such a configuration so as to be rotatable up and down. Specifically, a pivot groove A5f is formed on both inner side surfaces A5e (inner surfaces of both side walls A51) forming the space A5s of the housing A5, and both support shafts 61a of the rotating member 6 are formed in the pivot groove A5f. Is rotatably supported. On top of that, the rotating member 6 is held in the housing A5 by the lid A8 mounted on the bottom surface A5d of the housing A5.

The lid A8 is a plate-shaped one provided with a window A8a for projecting the grounding body 62 of the rotating member 6 to the outside. As shown in FIG. 13, the housing A5 and the lid A8 are co-fastened and fixed to, for example, the leg base of a desk by a common bolt 9. A temporary fixing element K2 is provided between the housing A5 and the lid A8 to prevent the lid A8 from falling off from the housing A5 before being fixed by the bolt 9. In the case of this embodiment, the temporary fixing element K2 elastically engages the engaging protrusion A52 provided on the outer peripheral surface of the protrusion A5d1 of the housing 5 with the engaging recess A8d provided on the inner peripheral surface of the lid A8. It is something that becomes. As shown in FIGS. 10, 11 and 13, the lid A8 has a rectangular flat plate shape, has screw insertion holes A8c matching the bolt insertion holes A5c of the housing A5 at both ends, and has an intermediate portion. The area is provided with the window A8a described above.

Here, FIG. 10 is a side view showing one of the grounding devices A4. 11 is a view taken along the line α in FIG. 10, and FIG. 12 is a cross-sectional view taken along the line β-β in FIG. FIG. 13 is an exploded perspective view of the grounding device A4. 10 to 12 are shown in a no-load state in which the grounding body 62 is not in contact with the floor surface F for convenience of explanation.

Even with such a configuration, the same effect as that of the furniture grounding device 4 of the above-described embodiment can be obtained.

Further, in the housing A5 of this embodiment, the height dimensions of the portions of both ends provided with the bolt insertion holes A5c (the depth dimension of the bolt insertion hole A5c, the dimensions of the screw swallowing portion) are set to one end side and the other end side. In response to this, the depth of the recessed portion on the furniture side where the housing A5 can be fitted from below is made different between the one end side and the other end side, so that this furniture grounding device is used. It is possible to guide the A4 to be mounted only in a pre-specified orientation.

In addition, the following modification examples are also conceivable.

For example, in the illustrated embodiment described above, the housing is provided with a space in which the ceiling surface is curved corresponding to the rotation locus of the rotating member, and the elastic member is curved along the ceiling surface. Although it is housed in the space of the housing in a posture, the holding structure of the elastic member is not necessarily limited to such a structure. However, with such a configuration, the elastic member can be inserted and held in the housing in a posture suitable for compression, so that the structure can be simplified and the assembly man-hours can be minimized.

Further, in the illustrated embodiment, the rotating member has support shafts protruding from both sides of the base end, and the support shafts are pivotally supported on both side walls of the housing and arranged at the lower end opening of the space. Of course, the pivot structure of the rotating member is not limited to such a structure. However, if the configuration as shown in the illustrated embodiment is adopted, the rotating member can be easily mounted on the housing, and the number of parts can be reduced as compared with the case where a separate support shaft is used.

Further, the holding structure of the rotating member is not limited to the illustrated embodiment, but as shown in the illustrated example, the mounting of the rotating member is completed at the same time as closing the lower surface of the housing, so that the configuration should be simplified. Can be done. In particular, if the housing and the lid are jointly fastened and fixed to the desk, which is furniture, with common bolts as in this illustrated embodiment, it is possible to prevent the structure from becoming complicated and the number of parts. Can also be reduced. Moreover, as in the illustrated embodiment, if a temporary fixing element for preventing the lid from falling off before fixing with bolts is provided between the housing and the lid, parts can be managed before assembly. In addition, the work of assembling the grounding device to the desk becomes simple.

Further, the elastic member is not limited to that of the illustrated embodiment, and may be made of, for example, urethane gel or elastomer as a material.

The furniture to which the grounding device of the present invention is attached is not limited to a desk for a school, but various things such as a desk, a table, a shelf, a counter, a tsuitate, a telephone stand, etc. used in an office can be considered. It should be noted that the desk for students is frequently moved, and there are many situations where concentration is required such as taking an examination or an examination, and the performance of quickly and automatically eliminating the rattling feeling and the fluffy feeling is required for each movement. It is the best application target for the grounding device of.

The furniture such as a desk according to the invention according to claim 8 has the following effects because the furniture grounding device as described above expands and contracts independently from each other at a plurality of places on the bottom surface. Obtainable. That is, the furniture grounding device expands and contracts independently of each other regardless of whether one of the grounding points is high or one of the grounding points is low with respect to the floor surface. It can be balanced and follow the floor.

In particular, when the furniture is a desk as in the above-described embodiment, the following effects can be obtained by attaching the above-mentioned furniture grounding devices to the four locations on the bottom surface. That is, when one grounding point is high (or three are low), two grounding points are high or low, and one grounding point is low (or three are high) with respect to the horizontal floor surface. ) In any case, the furniture grounding device expands and contracts independently, so that the furniture as a whole can be balanced and follow the floor surface.

In addition, various modifications may be made as long as the gist of the present invention is not impaired.

D ... Furniture (desk)
11 ... The bottom of the furniture (leg base)
4, A4 ... Furniture grounding device 5, A5 ... Housing 51 ... Side wall 5a ... Ceiling surface 5b ... Standing surface 5d ... Bottom surface 5s ... Space 6 ... Rotating member 61a ... Support shaft 62 ... Grounding body 62a ... Grounding cam surface 6a ... Top surface of rotating member 7 ... Elastic member 7a ... One end of elastic member 8 ... Lid 8a ... Window 9 ... Bolt K, K2 ... Temporary fixing element F ... Floor surface

Claims

A housing, a rotating member having a grounding body rotatably supported by the housing and grounded to the floor on the lower surface side, and viscoelasticity disposed in the housing and compressed by the rotation of the rotating member. A grounding device for furniture equipped with an elastic member having.
The housing is provided with a space inside which the ceiling surface is curved so as to correspond to the rotation locus of the rotating member.
The elastic member is housed in the space of the housing in a posture curved along the ceiling surface.
The furniture grounding device according to claim 1, wherein one end of the elastic member is brought into contact with the upper surface of the rotating member, and the other end is brought into contact with the upright surface of the housing intersecting the end of the ceiling surface.
The furniture grounding device according to claim 1 or 2, wherein the grounding body includes a grounding cam surface whose contact position with the floor surface changes with the rotation of the rotating member.
1. The furniture grounding device according to 2 or 3.
The rotating member is held in the housing by a lid mounted on the lower surface of the housing, and the lid is provided with a window for projecting the grounding body of the rotating member to the outside. The furniture grounding device according to claim 4.
The housing and the lid are jointly fastened and fixed to the furniture by a common bolt, and the lid is prevented from falling off between the housing and the lid before being fixed by the bolt. The furniture grounding device according to claim 4 or 5, which is provided with a temporary fixing element for prevention.
The furniture grounding device according to claim 1, 2, 3, 4, 5 or 6, wherein the elastic member is made of urethane gel, low-resilience urethane, or an elastomer.
Furniture equipped with the furniture grounding device according to 1, 2, 3, 4, 5, 6 or 7 that expands and contracts independently from each other at a plurality of locations on the bottom surface.
The furniture according to claim 8, wherein the grounding device for furniture is attached to four places on the bottom surface.