JP7355136B2 - Chair - Google Patents

Description

The present invention relates to a chair suitably used in offices and the like.

Conventionally, a seat configured to be rotatable between a use position in which a seated person is seated and a storage position in which the seated person stands up against the floor, and a support body capable of supporting this seat, and the seat is identical. 2. Description of the Related Art Various chairs are known in which other chairs are stackable in the front-back direction on a floor surface (for example, see Patent Document 1).

Some conventional chairs have dampers made of synthetic resin attached to their supports.

However, conventional dampers have been used only for the purpose of alleviating shocks and collision noises that may be caused by instantaneous collisions with other chairs during stacking.

Japanese Patent Application Publication No. 2014-104017

The present invention has been made in view of the above-mentioned circumstances, and provides a chair that can be stacked in the front-rear direction, which can exert a buffering function during stacking, and can suitably maintain the stacking posture of other chairs. Our goal is to provide the following.

That is, the present invention has the following configuration.

The invention according to claim 1 includes: a seat configured to be rotatable between a usage position in which a seated person can sit and a storage position in which the seated person stands upright with respect to the floor; and a support body capable of supporting the seat. The chair is configured such that other chairs having the same structure can be stacked in the front and back direction on the floor surface, and the support body is provided with front legs and rear legs that form a pair on the left and right. and the inner surface of each of the rear legs is provided with an abutting slope surface that can be brought into contact with the front leg of the other chair that has entered from the rear in the stacking state and restricts the forward movement and left-right movement of the other chair. A damper is attached to the damper, the damper includes a movement restriction part and a buffer part disposed below the movement restriction part, and the abutment slope is connected to the movement restriction part and the buffer part. The buffer section is provided continuously with the buffer section, the abutment inclined surface faces inward, and is set so as to be positioned downwardly and gradually outward. , the other chair can come into contact with the front legs of the other chair during a stacking process in which the other chair enters from the rear, the damper has a shape extending in the vertical direction, and the front legs are an inclined front leg extending in a straight line in a backwardly inclined posture; an upper end of the inclined front leg and an upper end of the rear leg extending in a front-rear direction different from the direction in which the inclined front leg extends in a side view; and an upper front leg part connecting the upper front leg part, and an upward surface of the damper that faces downward perpendicular to the extending direction of the upper front leg part in side view is in contact with the upper front leg part. This is a chair that has a downward facing surface .

As explained above, according to the present invention, it is possible to provide a chair that can be stacked in the front-rear direction, which can exhibit a buffering function during stacking, and can suitably maintain the stacking posture of other chairs.

FIG. 1 is a perspective view showing an embodiment of the present invention. The front view in the same embodiment. The back view in the same embodiment. The right side view in the same embodiment. FIG. 3 is a plan view of the same embodiment. The bottom view in the same embodiment. The perspective view in the same embodiment. The right side view in the same embodiment. FIG. 3 is an exploded perspective view of the same embodiment. FIG. 3 is a partially enlarged perspective view of the same embodiment. FIG. 3 is a partially enlarged front view for explaining the damper in the same embodiment. FIG. 6 is a partially enlarged rear view for explaining the damper in the same embodiment.

An embodiment of the present invention will be described below with reference to FIGS. 1 to 12.

In this embodiment, the present invention is applied to a chair A configured so that other chairs A' having the same structure can be stacked in the front and back direction on the floor.

Chair A includes a support body B having leg constituent members E formed by aluminum die-casting, a seat C rotatably supported by the support body B, and a back plate D supported by the support body B. We are prepared. Each configuration will be explained in detail below.

<<Support B>>
The support body B includes left and right leg constituent members E formed in pairs on the left and right by injection molded aluminum die-casting, and a joint that is interposed between these left and right leg constituent members E and connects the leg constituent members E to each other. It is equipped with material H.

<Leg component E>
The left and right leg constituent members E have a mutually symmetrical shape. The left and right leg constituent members E are integrally formed by aluminum die-casting. The left and right leg constituent members E include a rear leg 1, a front leg 2 integrally extending from the upper end of the rear leg 1 toward the front, and a longitudinally intermediate portion of the front leg 2 that projects frontward inward. A joint part 3 is provided. Casters F are provided at the lower ends of the rear legs 1 and the front legs 2. A damper G made of synthetic resin is provided on the inner surface of the left and right rear legs 1, which functions as a buffer against another chair A' that enters from behind during stacking and a positioning function with respect to the other chair A'. There is.

The rear legs 1 extend in the vertical direction. The rear legs 1 extend in the vertical direction in a forward-leaning posture when viewed from the side. The rear legs 1 are in an inclined posture such that the lower part is located outside the upper part when viewed from the front and from the rear. A back plate connecting portion N that projects upward is provided at the upper end of the rear leg 1. The back plate connecting portion N is shaped to fit into a fitting hole (not shown) formed downward in the extending portion M of the back plate D. In other words, the back plate D is fitted onto the back plate connecting portion N provided on the leg component E. Then, it is fixed to the back plate connecting portion N of the leg component E by a screw v1 inserted through a screw insertion hole m1 provided in the extending portion M. The exposed surface of the upper part of the rear leg 1 is set to be flush with the exposed surface of the extending portion M of the back plate D.

The front legs 2 include an inclined front leg part 21 that extends linearly in a backwardly inclined posture when viewed from the side, and an upper part that extends in the front-rear direction and connects the upper end of the inclined front leg part 21 and the upper end of the rear leg 1. The front leg portion 22 is provided. In the front leg 2, the inclined front leg part 21 is located at the front part, and the upper front leg part 22 is located at the rear part. The front legs 2 are inclined so that the lower part is located inside the upper part when viewed from the front and from the rear. The width dimension of the inclined front leg part 21 in a side view is set to be shorter (smaller) than the width dimension of the upper front leg part 22 in a side view. As shown in FIG. 9, the front leg 2 is provided with a holding part 221 that can rotatably support the seat C on the inner surface side of the upper front leg part 22 located at the upper part thereof. The holding portion 221 has a bottomed hole shape that is open inward. One end portion of a shaft member P for pivotally supporting the seat C is inserted into the holding portion 221 so that the shaft member P is attached. A downward surface 222 with which the upward surface of the damper G can come into contact is formed below the base end of the front leg 2, that is, on the inside of the rear leg 1 below the upper front leg portion 22.

The joint portion 3 protrudes from the longitudinally intermediate portion of the front leg 2 , more specifically from the inner surface of the upper portion of the inclined front leg portion 21 of the front leg 2 . The joint portion 3 extends forward approximately horizontally from the inclined front leg portion 21 when viewed from the side. The joint portion 3 extends inward substantially horizontally when viewed from the front. The joint portion 3 extends obliquely forward in a bottom view. The joint part 3 is provided with a screw insertion hole 311 penetrating in the left-right direction at its distal end portion 31. The distal end portion 31 of the joint portion 3 has a shape that can fit into the joint material H. The tip portion 31 of the joint portion 3 is fitted into a recessed portion h1 provided at the end of the joint material H. The leg component E having the joint part 3 is connected to the joint material H by a screw v2, which is a fastener, inserted from the outside into a screw insertion hole 311 provided in the tip part 31 of the joint part 3. It is supposed to be done.

Note that the screw v2 that connects the joint material H and the leg component E is hidden by a cover I that also serves as a buffer against other chairs A'.

The cover I includes a front cover part i1 located on the front side of the distal end part 31 of the joint part 3, and an outer cover part i2 located on the outside of the distal end part 31 of the joint part 3 and covering the screw insertion hole 311 and the screw v2. It is integrally provided and has a substantially L-shape in plan view.

The damper G is provided on a support body B that supports the seat C and the back plate D. The dampers G are attached to the inner surfaces of the left and right rear legs 1 that constitute the leg component E, respectively.

The damper G has a contact slope r that can be contacted by the support member B of another chair A' that approaches from the rear in the stacking state, and can restrict forward movement and left-right movement of the other chair A'. This is what I did. The contact slope r faces inward and is set to be located gradually outward toward the bottom.

The damper G has a shape extending in the vertical direction. The damper G includes a movement restriction part g2 having a contact slope r, a buffer part g3 disposed below the movement restriction part g2, and an upper end surface of the support body B. A positioning portion g1 that can come into contact with a downward surface 222 provided on the bottom surface 222 is provided. The buffer part g3 can come into contact with the front leg 2 of the support body B of another chair A' that has entered from the rear during the stacking process.

<Joint material H>
The joint material H has a prismatic shape extending in the left-right direction. The joint material H can function as a seat support that can support the seat C from below. The joint material H has a substantially rectangular prism shape extending in the left-right direction. The joint material H has a substantially horizontal upward surface h3. The lower surface of the horizontal frame portion 7 of the seat C in the usage position (U) comes into contact with the upward surface h3 of the joint material H. The joint material H is provided with nut portions h2 at both left and right ends into which screws v2 inserted from the outside can be screwed. The joint material H is attached to the joint portion 3 provided on the leg component E with a screw v2.

＜＜Location C＞＞
The seat C is configured to be rotatable between a use position (U) in which the seating surface faces upward and a seated person can sit thereon, and a storage position (S) in which the seat stands upright with respect to the floor surface. The seat C is rotatably supported by the upper front leg portion 22 of the front leg 2 on the support body B via the shaft member P.

The seat C includes a seat body J formed by supporting an upholstery 5 by a seat frame 4, and a seat frame K that supports the seat body J.

<Seat body J>
The seat body J is supported by a support body B via a seat frame K. The seat body J has a seat frame 4 having a substantially rectangular frame shape, and an upholstery 5 stretched within the seat frame 4. The seat frame 4 and the upholstery 5 are integrally formed by thermo-pressure molding or injection molding.

The seat frame 4 includes left and right side seat frames 41 extending in the front-rear direction, a front seat frame 42 extending in the left-right direction connecting the front ends of the left and right side seat frames 41, and a left and right side seat frame 41. It is provided with a rear seat frame portion 43 that connects the rear ends.

The left and right side seat frame portions 41 are supported from below by side frame portions 61 of the frame portion 6 of the seat frame K. The left and right side seat frame portions 41 have a gentle S-shape in side view so as to follow the shape of the left and right side frame portions 61. That is, the left and right side seat frame portions 41 are connected to a first forward-leaning portion 411 located at the front end and having a forward-leaning posture in side view, and a rear end of the first forward-leaning portion 411. It includes a rearwardly tilted portion 412 that has a backwardly tilted posture when viewed from the side, and a second forwardly tilted portion 413 that is connected to the rear end of the rearwardly tilted portion 412 and has a forwardly tilted posture when viewed from the side.

The first forward-inclined portion 411 is supported by the front portion 611 of the side frame portion 61 from below. The rearwardly inclined portion 412 is supported by the intermediate portion 612 of the side frame portion 61 from below. The second forward-inclined portion 413 is supported by the rear portion 613 of the side frame portion 61 from below.

The front seat frame portion 42 spans between the front ends of the left and right side seat frame portions 41. The front seat frame portion 42 is supported by the front frame portion 62 of the frame portion 6 from below.

The rear seat frame portion 43 is supported by the rear frame portion 63 of the frame portion 6 from below.

The upholstery 5 is in the form of a sheet and is stretched over the seat frame 4. The upholstery 5 is made of a flexible fabric and does not have shape retention properties by itself. The upholstery 5 is supported by the seat frame 4 at its periphery. In other words, the upholstery 5 is arranged in an area surrounded by the seat frame 4.

The upholstery 5 has a tension in the left-right direction, that is, a force that pulls the left and right side seat frames 41 toward each other, rather than a tension in the front-rear direction, that is, a force that pulls the front seat frame portion 42 and the rear seat frame portion 43 toward each other. is set to be strong. More specifically, the upholstery 5 includes a plurality of weft threads (not shown) extending in the left-right direction and a plurality of warp threads (not shown) extending in the front-rear direction and having elastic properties different from the weft threads. It is something to be prepared for. In the upholstery 5, the elasticity of the weft is set higher than the elasticity of the warp.

The rear part of the upholstery 5 forms a rear seating surface 53 that is an elastically deformable seating surface that is set to be positioned gradually upward toward the rear. A central portion of the upholstery 5 in the front-rear direction forms a central seating surface 52 that is an elastically deformable seating surface that is set to be located gradually lower toward the rear. The front portion of the upholstery 5 forms an elastically deformable front seating surface 51 that is set to be positioned gradually upward toward the rear.

The upholstery 5 supported by the seat frame 4 in this embodiment can take a so-called three-dimensionally raised form only by the upholstery 5. In other words, the upholstery 5 can assume a three-dimensionally protruding form without being subjected to any external force from other members to the area inside the peripheral edge thereof. That is, the entire upholstery 5 follows the shape of the side seat frame portion 41 that supports the upholstery 5 when viewed from the side, and has an undulating form in an S-shape when viewed from the side. In addition, by making the tension in the upholstery 5 different in the front-rear direction and the left-right direction, the degree of S-shaped undulation in the left-right center portion of the upholstery 5 is closer to that of the side seat frame 41. It is set to be gentler than the degree of S-shaped undulation at the position.

The seat frame K is integrally formed of synthetic resin. Since the seat frame K is fixed to the left and right leg constituent members E via the shaft member P provided with the flange portion p1, the seat frame K prevents the left and right leg constituent members E from separating from each other. ing.

<Seat frame K>
The seat frame K is rotatably supported by the support body B via a shaft member P. The seat frame K supports the seat body J from below. The seat frame K includes a frame part 6 attached to the lower surface of the seat frame 4 in the seat body J, and a horizontal frame part 7 built on the frame part 6.

The frame part 6 includes left and right side frame parts 61, a front frame part 62 that connects the front ends of the left and right side frame parts 61, and a rear part that connects the rear ends of the left and right side frame parts 61. A frame portion 63 is provided.

The left and right side frame portions 61 are provided with a shaft insertion hole 61a through which a shaft member P for rotatably supporting the seat C can be inserted. A flange p1 is formed at the inner end of the shaft member P. The flange p1 of the shaft member P is attached to the inner surface of the side frame portion 61. The frame portion 6 is made of, for example, reinforced nylon and has high rigidity, and cooperates with a shaft member P that is directly attached to the left and right leg components E. This prohibits them from separating from each other.

The horizontal frame portion 7 has a curved shape convex downward when viewed from the front. The horizontal frame portion 7 is installed between the left and right side frame portions 61 of the frame portion 6 . The horizontal frame portion 7 includes inclined extension portions 71 that project obliquely downward from the left and right side frame portions 61, and extends substantially horizontally in the left-right direction between the tips of the left and right inclined extension portions 71. A horizontal cross section 72 is provided. A sheet-shaped buffer member 73 is provided on the lower surface of the horizontal horizontal frame portion 72 .

<<Back plate D>>
The back plate D includes a back plate main body L having a backrest surface that can be attached to the back of a seated person, and left and right extending portions M extending downward from the left and right lower ends of the back plate main body L. Be prepared. The back plate D is configured such that fitting holes (not shown) provided in the left and right extending portions M are fitted into back plate connecting portions N provided in the support body B. A screw insertion hole m1 is provided in the left and right extensions M, and the back plate D is attached to the support body B by screwing the screw v1 inserted through the screw insertion hole m1 into the back plate connection part N. It turns out. The back plate D is integrally formed of synthetic resin. The back plate D is fixed to the left and right leg constituent members E, respectively, and prohibits the left and right leg constituent members E from separating from each other.

As explained above, the chair according to the present embodiment has a seat configured to be rotatable between the usage position (U) in which the seated person can sit and the storage position (S) in which the seater stands up against the floor. This chair comprises a seat C and a support B capable of supporting the seat C, and is configured so that other chairs A' having the same structure can be stacked in the front and rear directions on the floor. Then, the support body B of another chair A' that enters from the rear in the stacking state comes into contact with the support body B, and the contact slope r that can restrict the forward movement and left-right movement of the other chair A. A damper G is provided. Therefore, it is possible to provide a chair A that can be stacked in the front-rear direction, which can exhibit a buffering function during stacking and can suitably maintain the stacking posture of another chair A'.

The support body B is provided with a pair of left and right rear legs 1, and dampers G are attached to the inner surfaces of the rear legs 1, respectively. Therefore, the damper G is disposed inside the rear leg 1 where it is less noticeable from the user's perspective, and it is possible to achieve a suitable appearance while exhibiting the desired function.

The contact slope r faces inward and is set to be located gradually outward toward the bottom. Therefore, it is configured so that it can suitably come into contact with the outer surface of the front leg 2 of another chair A'.

The damper G has a shape extending in the vertical direction, and includes a movement regulating part g2 having a contact slope r, and a buffering part g3 disposed below the movement regulating part g2. g3 can come into contact with the support B of another chair A' during the stacking process. Therefore, the damper G is capable of suitably alleviating the shock and collision noise that may be caused by a momentary collision with another chair A' during stacking, by means of the buffer portion g3.

The damper G is provided with a positioning part g1 which is disposed on the movement restricting part g2 and whose upper end surface can come into contact with a downward surface 222 provided on the front leg 2 of the support body B. Therefore, the damper G can be suitably positioned relative to the rear leg 1 by engaging the front leg 2.

Note that the present invention is not limited to the embodiments detailed above.

In addition, the specific configuration of each part is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

A...Chair A'...Other chair (chair)
B...Support C...Seat G...Damper r...Abutting inclined surface (U)...Using position (S)...Storing position

Claims (1)

It has the same structure as a seat configured to be rotatable between a usage position in which a seated person can sit and a storage position standing up against the floor, and a support body capable of supporting this seat. A chair configured so that other chairs can be stacked in the front and back direction on the floor surface,
The support body includes front legs and rear legs paired on the left and right,
The inner surface of each of the rear legs has an abutting inclined surface that can be brought into contact with the front leg of the other chair that has entered from the rear in a stacked state and can restrict forward movement and left-right movement of the other chair. A damper is installed
The damper includes a movement restriction section and a buffer section disposed below the movement restriction section, and the contact slope is provided continuously to the movement restriction section and the buffer section. and
The abutment inclined surface faces inward and is set so as to be positioned gradually outward toward the bottom,
The buffer portion can come into contact with the front legs of the other chair during a stacking process in which the other chair enters from the rear,
The damper has a shape extending in the vertical direction,
The front leg includes a tilted front leg portion extending in a straight line in a backward tilted posture when viewed from the side, and an upper end portion of the tilted front leg portion extending in a front-rear direction different from the extending direction of the tilted front leg portion when viewed from the side. and an upper front leg portion connecting between the upper end portion of the rear leg and the upper end portion of the rear leg,
The upper front leg portion is provided with a downward surface that faces downward perpendicularly to the extending direction of the upper front leg portion in a side view and can be brought into contact with the upward surface of the damper.

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