Kokuyo Co., Ltd.

Takano Co., Ltd.

Takao Sugano

Toshiki Yajima

Yojiro Kinoshita

Kensuke Nakamura

Katsuaki Hayashi

Yasuhiro Shibamoto

Kenta Shiozawa

Tomoaki Ichikawa

Fei Xu

Shinichi Kaneda

Miyoshi Katagiri

Kiyoshi Kojima

Nobuyuki Nagai

Sakuji Ito

Tunetaro Ito

Masamitu Miyashita

Yoichi Suzuki

Takayoshi Kanou

Kenta Asano

Kazuki Tsukadaira

Naoya Niimura

In the chair, a space between swinging surfaces facing each other can be appropriately unseen. The chair includes swinging surfaces (rolling surfaces) () and () facing each other and has a configuration in which the swinging surfaces () and () swings with respect to each other in directions of 360 degrees including front-rear and left-right directions. In such a chair, an elastic member () is arranged to be positioned between the swinging surfaces () and () at least in the vicinity of outer peripheral edges () and (), and a stretchable sheet material () is provided between the outer peripheral edges () and () to conceal a gap between the swinging surfaces () and () facing each other, the gap including the elastic member ().

Chair having a movable seat

To realize a noble, useful seat with a simple structure designed to follow a natural movement of a seated person in front-rear and left-right directions and to support appropriately a movement of the person continuously changing its posture while the person balances a load. The seat includes the elastic support layerand upper and lower base unitsandarranged to sandwich the elastic support layer. The upper base unitincludes the rolling surfacebulging toward the lower base unitthereabove via the elastic support layer, is rollable in a 360&#xb0; direction from the tilt reference position IRP in receiving a load of the seated person, and has a moving distal end side tilting more downward as a distance from the position IRP increases, and is configured to move while compressing the elastic support layerby the rolling surface.

Seat, chair, and load support body

A chair includes a leg, a seatincluding a pressure receiving surface PS, a backrest, and a support mechanism SM. The seatcan move in the front-rear or left-right direction along a predetermined trajectory and to downwardly incline a tip side of the seatin a movement direction in accordance with a movement of the seatfrom a predetermined reference position (S). The support mechanism SM includes a return-force generation unit configured to generate, in accordance with an amount of movement, a return force in a direction in which the seatmoved from the reference position (S) in the front-rear or left-right direction is returned to the reference position (S), and movably supports the backrestin the left-right direction together with a movement of the seatin the left-right direction.

Chair

A chair is realized which takes specific measures to suppress movement of a seat in a front-rear direction when the seat swings in the front-rear and the left-right directions with respect to a support base. For the purpose, the chair wherein a seatswings in the front-rear and left-right directions with respect to a support base, the chair is configured such that swinging of the seatin front-rear direction with respect to the support baseis capable of being suppressed at one or a plurality of predetermined positions, or arbitrary position via operation of operation member

Chair whose seat swings in a front-rear direction and a left-right direction

A chair according to the present invention has a reference position P located midway in a front-back direction in a movable range of a seat. The chair includes a return force generation mechanismconfigured to generate a return force in a direction to return the seatmoved from the reference position P at least in the front-back direction to the reference position P. The return force generation mechanismincludes an elastic memberconfigured to increase the return force in the direction to return the seat to the reference position P as the amount of movement of the seat from the reference position P increases.

Chair with return force mechanism

[Problem] Provided is a chair capable of changing an operation of a movable part between allowed and suppressed states, without causing an up-down movement of a seat or without requiring a complicated structure relying on a back. [Solution] For that purpose, a weight-receiving part, the height position of which changes due to a person sitting on a seat surface, is provided on a seat, the change of the height position is mechanically transmitted to a control mechanismX configured to control an operation of a front-rear swing partbeing the movable part, and the control mechanismX changes an operation of the front-rear swing part-being the movable part between allowed and suppressed states.

In view of various movement of a seated person, when giving the left-right swinging operation to the seat in the non-conventional aspect, a chair configured such that the back can perform a new movement suitable for the left-right movement of the seat and return to the predetermined position when the seated person leaves a seat, is realized. For the purpose, a backis arranged behind a seat, and the backhas an operation mechanismM turning-movably supporting the load received from a seated person in a left-right direction in a front view, and when the load is applied, at least a part of guide partof the operation mechanismM is separated and the back moves freely, and when the applied load is removed, the back automatically returns to the neutral position along the guide part

A flange partis provided on a vertical surfaceon the plate member PM of the front-rear swing part, the flange parthas a guide surfaceextending to lateral direction and moving the rolling bodyin the longitudinal direction, a lateral direction dimension of the guide surfaceis greater than a thickness of the plate member PM, the flange partand the portion of the plate member PM forming the vertical surfacearound the flange partare integrally formed of metal; and the flange parthas a shape that goes around the circumference of the guide holeopened in the vertical surface, and then, the rolling bodyare provided independently to the left and right, to be able to a roll along the guide surface

A chair comprises: a legerected on a floor surface; a seatarranged above the leg; and a support mechanisminterposed between the legand the seat, wherein the support mechanismis arranged below the seatand is configured to movably support the seatalong a predetermined trajectory by having an omnidirectional connection unitconfigured to operably connect in all directions including the front-rear direction and the left-right direction, comprises: a seat inclining function configured to downwardly incline a tip side in a movement direction of the seat, and further comprises: a return-force generation mechanism configured to generate, by elevating a center of gravity of the seat, a return force in a direction of returning the seatto the reference position.

Chair and seat support mechanism

A chair includes a support mechanisminterposed between a legand a seat, wherein the support mechanismis arranged below the seat, is configured to each individually and movably support the seat, at least at two locations in a front-rear direction and two locations in a left-right direction, along a predetermined trajectory, and the support mechanismincludes: a seat inclining mechanism Q or a seat inclining function configured to downwardly incline a tip side in a movement direction of the seatin accordance with movement of the seat, and further includes: a center-of-gravity movement mechanism P or a return-force generation mechanism configured to generate a return force in a direction of returning the seathaving moved from a reference position (S) in a front-rear or left-right direction, to the reference position (S) by using a center-of-gravity movement.

A chair according to the present invention includes: a leg; a leg support pole; a support base; a movement mechanismlocated below a seat, the movement mechanismprovided with plural movement partsA,B configured to allow the seatto move in a certain area along a predetermined trajectory in a front-rear and left-right directions between the support baseand the seat, the movement mechanismbeing a support mechanism configured to support the seatso that the seatmoves in the front-rear direction and left-right directions; and plural cover membersarranged corresponding to the plural movement partsA,B. The plural cover membersare configured to move relatively in accordance with movement of the plural movement partsA,B and cover the support mechanism

Chair and cover member of the chair

To provide a chair in which the seated person can perceive a comfortable sitting feeling even if sitting for a long time, and furthermore, a high work efficiency can stably be maintained, a chair according to the present invention includes a legerected on a floor surface, a seatsupported above the legand a suspension support mechanismconfigured to operatively support the seat, in a front-rear direction and in a right-left direction, along a predetermined trajectory by suspending the part of the seatfrom a part of the leg, the suspension support mechanismcomprises a inclining function Q configured to downwardly incline the seatso that a tip side in a movement direction of the seatis positioned below a base end side when the seatoperates from a reference position_(S) at which the seatcan rest by its own weight.

A chair includes: a leg; a seat; and a front-back support mechanism. The front-back support mechanismis provided at a seat receiving partdirectly supported by the leg, and the front-back support mechanism includes: a wavy plateprovided to horizontally extend from vertical wallsof the seat receiving partand having mound-shaped surfaceseach convexly curved upward; and followersprovided at front-back support bodiesas supported parts and configured to move relative to the mound-shaped surfaceswhile contacting the mound-shaped surfaces. The wavy plateis associated with the followerssuch that a movement end inclines downward when the seatmoves from a neutral position in accordance with a relative movement between the mound-shaped surfacesand the followers

Growing community of inventors

Osaka, Japan

Takao Sugano