JP2022121262A - furniture - Google Patents

Abstract

To solve the problem that, when providing, on a furniture, a grounding device having a damper function, if a large load is applied to a furniture body, a grounding body is greatly immersed, and if such a large load is repeated or applied impulsively, the damper function is easily damaged.SOLUTION: A furniture (furniture with a top plate D) includes a grounding device 4 having a damper function, for supporting elastically a furniture body 1 on a floor surface F, and a descent suppression member 14 for suppressing a descending motion of the furniture body 1 in the middle of an elastically supportable range by the grounding device 4.SELECTED DRAWING: Figure 15

Description

The present invention relates to movable furniture such as lecture desks.

Conventionally, movable furniture is provided with an adjuster or other grounding device on its bottom surface (see, for example, Patent Document 1).

Movable furniture is often required to achieve both ease of movement and stability in installation. For example, with lecture desks, which are one of such furniture, as the curriculum becomes more diverse, the number of lectures held while changing the position of the desk in various ways is increasing. Some will need to. In particular, in the case of lecture desks that are also used for entrance examinations and the like, if the installed desks become rickety, there is a risk of adversely affecting the concentration of examinees, so careful adjustment is unavoidable.

In order to improve this situation, recently, some lecture desks are being developed in which a grounding device having a damper function is provided on the leg base. However, in a grounding device with a damper function, the grounding body in contact with the floor elastically projects and sinks to support the furniture body. , and the damper function is likely to be impaired if such a large load is repeated or acts impulsively (Problem 1).

In addition, when grounding devices having a damper function are provided at a plurality of locations on the furniture body, the furniture body may tilt if the degree of immersion of each grounding body differs due to an unbalanced load. As a result, problems are expected in that the furniture itself tends to fall over, and in the case of stackable furniture, the stacking state tends to collapse (problem 2).

Such a problem exists not only in lecture desks but also in furniture in general provided with a grounding device having a damper function.

JP 2012-29996 A

The inventions described in claims 1 to 4 are intended to solve the problem 1 described above. Further, the inventions of claims 5 and 6 intend to solve the problem 2 in addition to the problem 1.

The furniture according to the first aspect of the invention comprises a grounding device having a damper function for elastically supporting a furniture body on a floor surface, and a lowering motion of the furniture body in the middle of an elastically supportable range of the grounding device. and a descent restraint member.

The furniture according to the invention of claim 2 is the furniture according to claim 1, wherein the grounding device comprises a housing provided in the furniture body, a grounding body supported by the housing so as to be projectable, and and a damper element that resists the immersion movement of the ground body.

The furniture according to the invention of claim 3 is the furniture according to claim 2, wherein the damper element is an elastic member having viscoelasticity that is compressed by the retracting motion of the grounding body.

The furniture according to the invention of claim 4 is the furniture according to claim 2 or 3, wherein the descent restraining member is in the shape of a projection projecting from the bottom surface of the furniture body adjacent to the grounding device. is.

According to a fifth aspect of the present invention, there is provided furniture according to the fourth aspect, wherein the descent restraining member is arranged closer to the edge of the bottom surface than the grounding device.

The furniture according to the invention of claim 6 is the furniture according to claim 5, wherein the furniture body includes a leg base extending forward and backward, and the grounding device is provided on the leg base. In addition, the descent restraining member is arranged near the front and rear edges of the leg base.

According to the inventions of claims 1 to 4, when a grounding device having a damper function is installed in furniture, when a large load is applied to the furniture body, the grounding body is greatly immersed, and the large load is repeated and impact is applied. It is possible to solve the problem that the damper function is likely to be impaired when the damper function is excessively applied.

According to the inventions of claims 5 and 6, not only the effects described in the preceding paragraph, but also in the case where a plurality of grounding devices having a damper function are provided on the furniture main body, the immersion degree of each grounding body can be reduced by an unbalanced load. It can eliminate the problem associated with becoming different.

BRIEF DESCRIPTION OF THE DRAWINGS The perspective view of the furniture with a top plate which concerns on one Embodiment of this invention. The rear view of the furniture with a top plate which concerns on the same embodiment. The side view of the furniture with a top plate which concerns on the same embodiment. The bottom view of the furniture with a top plate which concerns on the same embodiment. FIG. 3 is a cross-sectional view taken along line XX in FIG. 2; FIG. 4 is an exploded perspective view showing a mounting mode of the grounding device of the furniture with a top plate according to the same embodiment. The bottom view of the leg base of the furniture with a top plate which concerns on the same embodiment. FIG. 8 is an enlarged cross-sectional view taken along line AA in FIG. 7; FIG. 8 is an enlarged cross-sectional view taken along line BB in FIG. 7; The side view of the grounding device which concerns on the same embodiment. The α arrow view in FIG. Explanatory drawing which shows the attachment aspect of the grounding device which concerns on the same embodiment. FIG. 3 is an exploded perspective view of the grounding device in the same embodiment; The side view which shows the stacking aspect of the furniture with a top plate which concerns on the same embodiment. Operation explanatory drawing of the furniture with a top plate which concerns on the same embodiment.

An embodiment of the present invention will be described below with reference to FIGS. 1 to 15. FIG.

Furniture D with a top that is the furniture of this embodiment (if it is necessary to distinguish this furniture D with a top from other furniture with a top D2 and D3 having the same structure, this furniture with a top will be referred to as The furniture D1 with a top plate) is a desk type for lectures, and as shown in FIGS. and a pair of left and right leg bases 11 having base ends 11e connected to the lower ends of the leg supports 12 and having tip ends 11f extending toward the use end 2c of the top plate 2. , the inner side surfaces 11b of the leg bases 11 located on the tip 11f side of the leg supports 12 face each other. The inner dimension L1 between the inner side surfaces 11b of the leg bases 11 is set larger than the outer width dimension L0 between the outer side surfaces 12a of the leg supports 12, and the inner side surface 11b of the leg base 11 is set to the inner dimension L1. (Including the inner dimension L1a on the side of the base end 11e and the inner dimension L1b on the side of the tip 11f) is inclined in a direction that gradually increases from the side of the base end 11e toward the side of the tip 11f. Specifically, the inner side surface 11b of the leg base 11 is inclined at an angle θ with respect to an imaginary line m parallel to the outer side surface 11c of the leg base 11 .

In addition, as shown in FIG. 5, the top plate-equipped furniture D has the left and right side surfaces 2a of the top plate 2 and the outer side surfaces 11c of the leg base 11 substantially aligned in plan view. Therefore, the left and right leg bases 11 have a tapered shape in which the width dimension is gradually reduced toward the distal end 11f.

As shown in FIGS. 1, 4 and 5, the top plate 2 is a flat plate having a rectangular shape in a plan view, and is supported by a pair of left and right leg supports 12 on the side opposite to the use end 2b.

As shown in FIGS. 1 to 3, the leg supports 12 are in the form of prismatic pipes having a rectangular cross section whose lateral width is smaller than their longitudinal width. are provided with top plate support arms 13, which will be described later. A curtain plate 3 is installed between the upper ends of the left and right leg supports 12 .

As shown in FIGS. 1 to 9, the leg base 11 has a continuous upward surface 11d with no step, and the leg base 11 corresponds to the upward surface 11d over the entire area from its base end to its tip end. It is located outside the support 12 . In addition, the leg base 11 has a post attachment portion 111 protruding inward at the base end portion (near the base end 11e), and the leg post 12 is erected on the post attachment portion 111. As shown in FIG. More specifically, the leg base 11 includes a leg base main body 110 having an upward surface 11d, and a pillar protruding inside the base end portion of the leg base main body 110 (near the base end 11e of the leg base 11). It is provided with a mounting portion 111 and is an integrally molded product made by aluminum die casting or the like. As shown in FIG. 9, the post attachment portion 111 is provided with a screw insertion hole 11z through which the bolt B can be inserted from below. The leg base 11 and the leg strut 12 are connected by screwing into the female screw hole of the plate-shaped nut 121 rigidly connected to the inside.

Further, as shown in FIGS. 1 to 3 and 14, a top plate support arm 13 extending in the direction of the use end 2c of the top plate 2 is provided at the upper end of the leg support 12 of the furniture D1 with the top plate. As shown in FIG. 14, the leg bases 11 are positioned on the outer side of the leg supports 12 of another piece of furniture D2 with a top plate having the same structure, and the top plate is placed on the top plate 2 of the piece of furniture D2 with a top plate. It is configured such that it can be stacked on the other piece of furniture with a top board D2 with the support frame 13 placed thereon.

As shown in FIGS. 1 to 3 and 14, the top plate support arm 13 is in the form of a prismatic pipe that is rigidly connected to the upper end of the leg support 12. As shown in FIG. It has a downward horizontal surface 13a that abuts on the upper surface of the top plate 2 of the furniture D2 with a top plate, and an inclined surface 13b that continues to the tip of the downward horizontal surface 13a and gradually rises toward the use end 2c side. A nylon sheet 131, for example, is attached to the downward horizontal surface 13a and the inclined surface 13b.

On the other hand, on the bottom surface 11h of the leg base 11, as shown in FIGS. Lowering restraining members 14 (A) and 14 (B) are provided for restraining the lowering motion of the leg base 11 in the middle of the elastically supportable range of the device 4 .

As described above, and as shown in FIGS. 1 to 5, this piece of furniture D with a top plate includes a top plate 2, leg supports 12, leg bases 11, top plate support arms 13, and a curtain plate 3. The grounding device 4 has a damper function to elastically support the furniture body 1 on the floor surface F. As shown in FIGS. 1, 3, 4 and 6, the grounding devices 4 are provided in the vicinity of the front and rear ends of the left and right leg bases 11, and are shown in FIGS. 6 to 8 and 10 to 13. , the housing 5 provided on the leg base 11, the grounding body 62 supported by the housing 5 so as to be retractable, and the elastic member 7, which is a damper element that gives resistance to the movement of the grounding body 62, is provided. Be prepared. The elastic member 7 has viscoelasticity that is compressed by the retracting motion of the grounding body 62 .

More specifically, as shown in FIGS. 6 to 8 and 10 to 13, the grounding device 4 includes a housing 5 which is detachably attached to the bottom of the furniture D with a top plate, and a housing 5 which rotates up and down. A rotating member 6 having a grounding member 62 which is supported so as to be possible and grounds on the floor surface F on the lower surface side, and a viscoelasticity which is arranged in the housing 5 and compressed by the upward rotation of the rotating member 6. and an elastic member 7 . Here, the grounding device 4 can be attached to the furniture D with the top plate only in a predetermined posture. That is, as shown in FIGS. 6, 8 and 12, a plurality of recessed portions 11a into which the housing 5 can be fitted from below are provided on the bottom surface 11h of the furniture body 1, that is, the bottom surface 11h of the leg base 11. The shape of the bottom surface 11g of the concave portion 11a allows the furniture grounding device 4 to be attached only in a predetermined posture.

As shown in FIG. 8, the housing 5 is internally provided with a space 5s formed by curving the ceiling surface 5a so as to correspond to the rotation locus 6k of the rotating member 6. is housed in this space 5s in a curved posture along the . 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 a box-shaped unit integrally made of, for example, synthetic resin, and has bolt insertion holes 5c1 and 5c2 extending vertically through both ends, and the above-described space 5s in an intermediate region. there is The space 5s is open downward, and the ceiling surface 5a is formed outside the rotation locus 6k of the rotating member 6 so as to approximate the rotation locus 6k. The ceiling surface 5a is composed of an upright one end flat portion 5a1, a cylindrical surface portion 5a2 continuous with the one end flat surface portion 5a1, and a horizontal other end flat surface portion 5a3 continuous with the cylindrical surface portion 5a2. The terminal end of the flat portion 5a3 on the other end side is perpendicular to the vertical upright surface 5b. As shown in FIGS. 8 and 13, a ridge 5d1 is formed on the bottom surface 5d of the housing 5 so as to surround the opening edge of the space 5s. An engaging protrusion 52 that can be elastically engaged is projected from the engaging recess 8d of the body 8. As shown in FIG. As shown in FIGS. 8 and 12, the upper surface 5f of the housing 5 is shaped so that the furniture grounding device 4 can be attached only in a predetermined posture. is made to correspond to the bottom surface 11g of . That is, when the furniture grounding device 4 is attached in a predetermined posture, one end 5f1 of the top surface 5f of the housing 5 is connected to one end 11g1 of the bottom surface 11g of the recessed portion 11a, and the other end of the top surface 5f of the housing 5 is 5f2 is set to a shape capable of abutting on the other end portion 11g2 of the bottom surface 11g of the recessed portion 11a. In other words, the height dimension h1 of one end of the housing 5 of the furniture grounding device 4 and other The height dimension h2 of the end is made different. That is, the bolt insertion hole 5c1 on the one end side and the bolt insertion hole 5c2 on the other end side have different depths d21 and d22. A rotating member 6 is accommodated in the bottom portion of the housing 5 having such a structure so as to be vertically rotatable. Further, the rotating member 6 is held within the housing 5 by a lid 8 attached to the bottom surface 5 d of the housing 5 .

As shown in FIG. 13, the rotating member 6 has supporting shafts 61a projecting from both sides of the proximal end thereof, and the supporting shafts 61a are pivotally supported in pivotal support grooves 5x formed in both side walls 51 of the housing 5. As shown in FIG. and is arranged at the lower end opening of the space 5s. More specifically, as shown in FIGS. 5 and 10, the rotating member 6 comprises a member body 61 having a support shaft 61a at its proximal end, and a ground member 62 projecting from the lower surface of the member body 61. is integrally made of synthetic resin, for example. Pivot grooves 5x for rotatably supporting both spindles 61a of the rotating member 6 are formed in both inner side surfaces 5e forming the space 5s of the housing 5 described above. Both pivot grooves 5x have lower ends opened to the bottom surface 5d of the housing 5, and the rotating member 6 can be attached to the housing 5 by engaging both pivot shafts 61a with both pivot grooves 5x from below. is now possible. The grounding member 62 is provided so as to hang downward from the member body 61. A grounding cam surface 62a is formed on the lower surface of the grounding member 62 so that the grounding position with respect to the floor surface F changes as the rotating member 6 rotates. ing. The grounding body 62 of this embodiment has a shape that gradually narrows toward the lower end. The rotating member 6 is held in the housing 5 by a lid 8 attached to the bottom surface 5d of the housing 5. The lid 8 projects the grounding member 62 of the rotating member 6 to the outside. window 8a is provided. As shown in FIGS. 8 and 13, the housing 5 and the lid 8 are fastened together to the leg base 11 of the furniture D with a top board by screwing a common bolt 9 into the female screw hole 11x of the leg base 11. A temporary fixing element K is provided between the housing 5 and the lid 8 to prevent the lid 8 from falling off from the housing 5 before being fixed with the bolt 9. there is In this embodiment, the temporary fixing element K is formed by elastically engaging an engaging projection 52 provided on the outer peripheral surface of the projection 5d1 of the housing 5 and an engaging recess 8d provided on the lid 8. be. As shown in FIGS. 8, 11 and 13, the cover 8 is a rectangular flat plate, and has screw holes 8c at both ends thereof to match the bolt holes 5c of the housing 5. The window 8a is provided in the area, and the engaging recess 8d is provided as described above. The engaging recess 8d of the present embodiment is a through hole penetrating through the lid 8 in the thickness direction. The height dimension of the lid body 8 is uniform over the entire area. 6c is the center of rotation of the rotating member 6;

The elastic member 7 is made of, for example, low-resilience urethane, and as shown in FIGS. are 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 drawing. More specifically, the elastic member 7 in the accommodated state has one end 7a in contact with the upper surface 6a of the rotating member 6 on the rotating end side and the other end 7b in contact with the upright surface 5b of the housing 5. It is accommodated in the space 5s of the housing 5. As shown in FIG.

The furniture grounding device 4 described above is attached to the rear end portion and the front end portion of the right and left leg bases 11 of the furniture D with a top plate. In the case of this embodiment, the furniture grounding device 4 attached to the rear end of the leg base 11 is configured such that the rotating end of the rotating member 6 faces the rear and the furniture grounding device 4 attached to the front end of the leg base 11 faces backward. The device 4 is set so that the pivot end of the pivot member 6 faces forward. This is because the contact point of the deformed cam-shaped contacting body 62 slightly moves during expansion and contraction due to expansion and contraction accompanied by rotation. Therefore, if all the grounding devices 4 are rotated in the same rotating direction, the furniture D with the top board will move as the furniture grounding device 4 expands and contracts. In order to stop the movement, it is appropriate to set the rotation direction of the grounding device 4 in the reverse rotation direction so that the movement is canceled out, and it is necessary to set the mounting direction of the grounding device 4 in such a manner. is.

Here, when the rotating member 6 grounds 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 of the elastic member 7 is between the upright surface 5b and the abutting surface 5b. is compressed with At this time, the elastic member 7 is partially expanded due to elastic deformation. Since the elastic member 7 is made larger than the thickness dimension under load, the elastic member 7 has an expansion margin on both sides in the thickness direction. can do.

So far, the grounding devices 4 on the proximal end 11e side and the distal end 11f side of the leg base 11 have been explained without distinguishing between them. When the device 4(A) and the grounding device 4 on the side of the tip 11f are shown separately, they are referred to as the grounding device 4(B) on the side of the tip 11f.

The descent restraint members 14(A), 14(B) are adjacent to the grounding devices 4(A), 4(B) as shown in FIGS. The bottom surface of the furniture body 1, that is, the bottom surface 11h of the leg base 11, is protruding and is arranged closer to the edge than the grounding devices 4(A) and 4(B) on the bottom surface. More specifically, the furniture body 1 of this embodiment has a leg base 11 extending in the front-rear direction, and grounding devices 4 are provided in the vicinity of both front and rear ends of the leg base 11, respectively. 14(A) and 14(B) are arranged near the front and rear edges of the leg base 11, respectively. Specifically, the descent restraining member 14 (A) arranged on the base end 11e side (front end side) of the leg base 11 is arranged adjacent to the inner side of the grounding device 4 (A) on the base end side. It is a long and narrow prismatic protrusion with one end positioned in front of the grounding device 4 (A). That is, the descent restraining member 14(A) on the side of the base end 11e is arranged closer to the base end edge 11p of the leg base 11 than the grounding device 4(A) on the side of the base end 11e. In addition, the descent restraining member 14 (B) arranged on the tip 11f side (rear end side) of the leg base 11 is an elongated left and right corner arranged adjacent to the tip of the grounding device 4 (B) on the tip 11f side. It is a columnar projection, and the whole is located behind the grounding device 4 (B) on the tip 11f side. That is, the descent restraining member 14 (B) on the tip 11f side is arranged closer to the tip edge 11q of the leg base 11 than the grounding device 4 on the tip 11f side. Each of the descent restraining members 14(A) and 14(B) is a block-like member made of synthetic resin such as nylon, and is secured to the leg base 11 using countersunk screws v, for example. As shown in FIGS. 6 to 8, the descent restraining members 14(A) and 14(B) have a screw insertion hole 14a in the central portion through which a countersunk screw v can be inserted, and a leg Engagement holes 14b that can be engaged with positioning projections 112 provided on the front and rear ends of the base 11 are provided near both ends in the longitudinal direction. Each of the descent restraining members 14 (A) and 14 (B) is fixed to the leg base 11 by inserting countersunk screws v through the screw insertion holes 14 a while the engagement holes 14 b are engaged with the positioning projections 112 . is screwed into the female screw hole 11y of the leg base 11. As shown in FIG. The projection dimension of these descent restraining members 14(A) and 14(B) is set to about 5 mm, for example, when the projection-retractable dimension of the grounding body 62 is about 10 mm. It should be noted that the difference between the projecting dimensions of the descent restraining members 14(A) and 14(B) and the projecting/retractable dimension of the grounding member 62 can be varied in accordance with the usage conditions.

FIG. 14 shows a state in which a plurality of pieces of furniture D with top plate described above are stacked. In the stacked state, the grounding member 62 of the upper piece of furniture D1 with a tabletop out of the two adjacent furniture pieces D1 and D2 with a tabletop does not abut on the leg base 11 of the lower piece of furniture D2 with a tabletop, A gap S is formed between the upper grounding member 62 and the upward surface 11 d of the lower leg base 11 . Similarly, when focusing on two adjacent pieces of furniture with a top D2 and D3, the grounding member 62 of the upper piece of furniture with a top D2 does not come into contact with the leg base 11 of the lower piece of furniture with a top D3. Thus, a gap S is formed between the upper grounding member 62 and the upward surface 11 d of the lower leg base 11 . In the stacking state, the gravity acting on all the furnitures D1 to D3 with a top board is applied to the grounding device 4 of the furniture D3 with a top board at the bottom. The grounding body 62 of the device 4 will be recessed into the housing 5 . In the stacking, since a plurality of pieces of furniture D1 to D3 with top plates are piled up while being sequentially shifted forward, the center of gravity will shift to the anti-use end side (front side). Among the grounding devices 4 of the furniture D3, a large load acts especially on the grounding device 4 (A) on the base end side. However, in this embodiment, the descent restraining member 14 (A) is arranged closer to the base end 11e than the grounding device 4, so that the bottom piece of furniture D3 with a top plate is too deep into the grounding member 62. You can prevent it from leaning forward. Therefore, it is possible to suppress collapse of the stacked furniture D3 with the top plate toward the counter-usage end 2b, and it is possible to perform stable stacking.

Here, FIG. 1 is a perspective view showing the furniture D with a top plate of this embodiment, FIG. 2 is its rear view, FIG. 3 is its side view, and FIG. 4 is its bottom view. FIG. 5 is a cross-sectional view taken along line XX in FIG. 2, showing the top plate 2 in phantom lines. 6 is an exploded perspective view showing how the grounding device 4 is attached, and FIG. 7 is a bottom view of the leg base 11. As shown in FIG. FIG. 8 is an enlarged cross-sectional view taken along line AA in FIG. 7, omitting an intermediate portion. FIG. 9 is an enlarged sectional view taken along line BB in FIG. 10 is a side view of the grounding device 4, and FIG. 11 is a view in the direction of arrow .alpha. in FIG. FIG. 12 is an explanatory view showing a mounting mode of the grounding device 4, and FIG. 13 is an exploded perspective view of the grounding device 4. As shown in FIG. FIG. 14 is a side view showing a stacking mode of a plurality of furniture pieces D1 to D3 with top plates. 15A and 15B are diagrams for explaining the operation of the grounding device 4 of the furniture D with a top plate, in which FIG. 15A shows a no-load state, and FIG. 15B shows a large load state. In the above description, the counter-use end 2b side of the top plate 2 (base end 11e side of the leg base 11) is defined as "front" and "front", and the use end 2c side (base end 11f side of the leg base 11) is defined as "front" and "front". are referred to as "rear" and "rear".

As described above, according to this embodiment, the grounding device 4 having a damper function is provided at a plurality of locations on the bottom surface of the furniture body 1, and the grounding member 62 of each grounding device 4 operates independently. Therefore, even if one of the grounding points is higher than the floor surface F, or if one of the grounding points is lower than the floor surface F, the furniture with a top board D as a whole is balanced and is placed on the floor surface F. can follow. That is, unevenness of the floor surface F can be easily dealt with without requiring time and effort such as adjusting the adjuster.

In addition, the furniture body 1 is provided with the descent restraint members 14(A) and 14(B) that restrain the descent movement of the furniture body 1 in the middle of the elastically supportable range of the grounding device 4 having a damper function. When a large load is applied, the descent restraining members 14(A) and 14(B) are grounded to restrain the grounding member 62 from further sinking. That is, when a large load acts on the furniture main body 1, the grounding member 62 is greatly submerged, and when such a large load is repeated or acts as an impact, the damper function is likely to be impaired.

Specifically, assuming that the damper function of this type of grounding device 4 is impaired, when the furniture main body 1 receives a load that greatly exceeds normal assumptions, the grounding member 62 is greatly retracted, causing the elastic member 7 to move. It is conceivable that the elastic repulsive force is lost due to breakage or crushing. However, in the present embodiment, the provision of the descent restraining members 14(A) and 14(B) restrains the grounding member 62 from being greatly retracted, so that the elastic member 7 is prevented from being broken or crushed. can be effectively prevented.

Particularly, in this embodiment, the grounding device 4 includes a housing 5 provided in the furniture body 1, a grounding body 62 supported by the housing 5 so as to be able to project and retract, and a damper that provides resistance to the movement of the grounding body 62. Since the grounding device 4 can be treated as a unit, the furniture body 1 can be used in common while the elastic members 7 having various characteristics are provided. By providing the grounding device 4, it is possible to realize various types of furniture D with a top board while achieving common design, and to easily replace the grounding device 4 when the grounding device 4 is damaged. can also

Furthermore, since the elastic member 7 having viscoelasticity that is compressed by the retracting movement of the grounding body 62 is used as a damper element, there is no risk of oil leakage, and high durability can be ensured compared to a hydraulic damper type grounding device. can be done.

In addition, since the descent restraining members 14(A) and 14(B) are protrusions protruding from the bottom surface 11h of the leg base 11 adjacent to the grounding device 4, the desired protrusion of the grounding member 62 can be achieved. By setting the projection dimension from the bottom surface 11h of the descent restraining members 14(A) and 14(B) to a dimension close to the recessed width, the recessed width of the grounding member 62 can be set. In addition, since the descent restraining members 14(A) and 14(B) are protruded from the bottom surface 11h of the leg base 11, the descent restraining members are projected from a portion other than the bottom surface 11h of the leg base 11. Compared with the mode in which the descent restraint members 14(A) and 14(B) are provided with the descent restraining members 14(A) and 14(B) having a smaller projection dimension.

In addition, since the descent restraining members 14 (A) and 14 (B) are arranged closer to the edge (base edge 11p, tip edge 11q) of the bottom surface 11h of the leg base 11 than the grounding device 4, the furniture body 1 receives a load biased toward the use end 2c side or the non-use end 2b side, the descent restraining member 14 (A) is activated before the furniture body 1 tilts greatly due to the difference in the degree of immersion of the front and rear grounding members 62 increasing. 14(B) is grounded on the floor surface F and the grounding body 62 on the side receiving a large load can be prevented from sinking further. Therefore, when the grounding devices 4(A) and 4(B) having a damper function are provided at a plurality of locations on the furniture body 1, the degree of immersion of each grounding body 62 will be different due to the unbalanced load. Accordingly, it is possible to solve problems such as furniture falling easily and stacking easily collapsing.

In particular, in this embodiment, the descent restraining members 14(A) and 14(B) are arranged near the front and rear edges of the leg base 11, that is, near the proximal edge 11p and the distal edge 11q. Before the grounding member 62 of the grounding device 4(A) on the end side is greatly retracted, the lowering prevention member 14(A) on the proximal side touches the ground, thereby preventing the furniture body 1 from greatly tilting and stacking failure. At the same time, when the furniture body 1 receives a load biased toward the use end 2c side or the anti-use end 2b side, the descent restraining member 14 ( A) and 14(B) are grounded to prevent the furniture D from overturning.

The present invention is, of course, not limited to the embodiments described above, and can be modified in various ways without departing from the spirit of the present invention.

For example, the furniture that constitutes the furniture system of the present invention is not limited to lecture desk type furniture with a top board, but other furniture with a movable top board such as a table, shelf, counter, telephone stand, etc. can also be considered. Furthermore, various items other than furniture with a top plate are conceivable as long as they are movable, such as a screen. Further, the present invention is not limited to furniture in which the grounding device is provided on the leg base, but may be applied to furniture in which the grounding device is provided on the bottom surface of the leg support, for example.

The damper element for imparting a damper function to the grounding device is not only an elastic member having viscoelasticity such as the one according to the above-described embodiment, but also an arbitrary damper element having a damper function, such as a hydraulic damper type. You can adopt something. However, if an elastic member having viscoelasticity is employed as the damper element, as described above, there is no fear of oil leakage, and higher durability can be ensured compared to the hydraulic damper-type grounding device.

The positions and number of the grounding devices are not limited to those according to the above-described embodiment, that is, the manner in which they are provided at the front and rear ends of the left and right leg bases, and may be set arbitrarily. Further, the position and number of the descent restraining members, and the relative position between the grounding device and the descent restraining members may be set arbitrarily. In particular, in stackable furniture, even if the fall prevention member is provided only at the end of the side that receives a large load when stacking, the grounding member on the side that receives a large load when stacking is greatly retracted. Therefore, it is possible to effectively prevent the furniture from tilting and stacking failure. However, if grounding devices are provided in the vicinity of the front and rear ends of the furniture body, respectively, and a drop restraining member is provided near the corresponding edge of the bottom surface of the furniture body rather than the grounding device, as described above, the uneven load may occur. Therefore, it is possible to effectively prevent the furniture from easily overturning due to different degrees of immersion of the grounding bodies. Also, as described above, if the descent restraining member is a protruding member protruding from the bottom surface of the furniture main body, compared with the aspect in which the descent restraining member is provided so as to protrude from other locations, Such a descent restraining member can be realized with a smaller projecting dimension.

The housing of the grounding device may be provided integrally with the furniture body. However, if the housing is detachably attached to the bottom surface of the furniture body, the grounding device can be treated as a unit as described above, and the furniture body can be designed in common to realize various types of furniture. Cost can be reduced and the grounding device can be easily replaced if it becomes damaged.

The grounding body of the grounding device is not limited to the one that rotates like the one according to the above-described embodiment, and may be one that moves up and down linearly. However, if the damper element is compressed by a grounding body that rotates, the compression direction of the damper element can be made non-linear in accordance with the rotational trajectory of the rotational member. Therefore, it is possible to suppress an increase in the height dimension of the entire ground contacting device while securing a large length dimension in the substantial compression direction of the damper element.

In addition, various modifications may be made without departing from the gist of the present invention.

D... Furniture (with top plate) 1... Furniture body 11h... Bottom of furniture body (bottom of leg base)
11p ... edge of the bottom of the furniture (basal edge of the leg base)
11q ... edge of the bottom of the furniture (tip edge of the leg base)
14(A), 14(B)... Drop restraining member 4 (4(A), 4(B))... Grounding device 5... Housing 62... Grounding member 7... Damper element (elastic member)
F...Floor

Claims (6)

This furniture comprises a grounding device having a damper function for elastically supporting a furniture body on a floor surface, and a fall restraining member for restraining the downward movement of the furniture body in the middle of the elastically supportable range of the grounding device. 2. The grounding device comprises a housing provided in the furniture body, a grounding member supported by the housing so as to be able to project and retract, and a damper element that provides resistance to the retracting movement of the grounding member. Furnishings as described. 3. The furniture according to claim 2, wherein said damper element is an elastic member having viscoelasticity that is compressed by retracting movement of the grounding member. 4. Furniture according to claim 2 or 3, wherein said descent restraining member is in the form of a projection projecting from the bottom surface of said furniture body adjacent to said grounding device. 5. The furniture according to claim 4, wherein the descent restraining member is arranged closer to the edge of the bottom surface than the grounding device. The furniture body has a leg base extending back and forth,
6. The piece of furniture according to claim 5, wherein said grounding device is provided on said leg base, and said fall restraining member is arranged near the front and rear edges of said leg base.

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