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公开(公告)号：US20240389755A1
公开(公告)日：2024-11-28
申请号：US18694360
申请日：2022-03-07
Applicant: OKAMURA CORPORATION
Inventor： Hiroshi MASUNAGA , Syunsuke ISHIMARU , Syouichi IZAWA , Shinpei TOTSUKA
Abstract: A chair includes a lower structure configured to be placed on a floor surface (F), a backrest support member supported by the lower structure body, and a backrest supported by the backrest support member. The backrest includes a backrest body fixed to the backrest support member and provided with an opening portion (S2) that opens downward, and a tensile material provided in the backrest body and having a lower end portion that is locked on the backrest body. The backrest body includes a plate-shaped backrest main body fixed to the backrest support member and provided with a load-supporting surface that supports a load of a seated person. The backrest support member is inserted into the opening portion of the backrest body and is disposed on a rear side of the backrest main body.
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公开(公告)号：US20190307250A1
公开(公告)日：2019-10-10
申请号：US16307878
申请日：2017-06-08
Applicant: OKAMURA CORPORATION
Inventor： Hiroshi MASUNAGA , Syouichi IZAWA
Abstract: A load support structure for a chair includes a tensile material on which a load support surface configured to receive a load of a seated person is formed, a pair of support sections (51) to which the tensile material is attached, and which is elastically deformable in response to a force acting from the tensile material, a first reinforcing section (41) which is disposed to be spaced apart from the pair of support sections (51) in a surface perpendicular direction perpendicular to the load support surface, is located on a side opposite to the load support surface, and extends along an extending direction of the support section, and a connecting body which connects each of both end portion sides of the support section (51) with a corresponding end portion side of both end portion sides of the first reinforcing section (41), in which the support sections (51) are disposed outside the first reinforcing section (41) in a view of the surface perpendicular direction from the load support surface side.
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公开(公告)号：US20180008046A1
公开(公告)日：2018-01-11
申请号：US15543503
申请日：2016-01-05
Applicant: OKAMURA CORPORATION
Inventor： Hiroshi MASUNAGA
Abstract: A pivot shaft (10) which is a first shaft member coupled to a supporting member, an inner cylinder (12) which is a second shaft member coupled to a supported member, and an outer cylinder (14) which is a third shaft member are disposed to be approximately coaxial with each other and disposed radially in multiple layers. The pivot shaft (10) and the inner cylinder (12) are coupled to each other through a first rubber-like elastic member (11), and the inner cylinder (12) and the outer cylinder (14) are coupled to each other through a second rubber-like elastic member (13). The total reaction force is increased by restricting the rotation of the outer cylinder (14) by means of an operating pin (19) which is a reaction force adjusting part and thereby adding a reaction force resulting from the second rubber-like elastic member (13) to a base reaction force resulting from the first rubber-like elastic member (11).
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公开(公告)号：US20170311724A1
公开(公告)日：2017-11-02
申请号：US15520678
申请日：2015-10-23
Applicant: OKAMURA CORPORATION
Inventor： Hiroshi MASUNAGA , Yoshinori ISOGAI , Kouichirou WAKIZONO , Naoyuki OKUDA , Syouichi IZAWA
IPC: A47C7/40
Abstract: Furniture and a chair include a shielding piece (7b5) which is provided in an operation plate (7b2) or a flange (7a5) and closes a gap generated by the operation plate (7b2) and the flange (7a5) when the operation plate (7b2) has an operation posture. In addition, a chair includes a load support member for a chair, the load support member for a chair includes a frame member which includes a pair of rod members (19) and an extension material (22) which is formed in a bag shape and covers the frame member, a support portion (26) is provided on each of inner surfaces facing each other in the pair of rod members (19), and an interior material (21) having a repulsive force with respect to a load in a surface perpendicular direction is bridged between the pair of rod members (19) by being supported by the support portion (26).
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公开(公告)号：US20240389756A1
公开(公告)日：2024-11-28
申请号：US18694687
申请日：2022-03-07
Applicant: OKAMURA CORPORATION
Inventor： Hiroshi MASUNAGA , Syunsuke ISHIMARU , Syouichi IZAWA , Shinpei TOTSUKA
IPC: A47C7/44
Abstract: A load-supporting structure for a chair includes a receiving surface component provided with a curved receiving surface configured to receive a load from a seated person; a load supporter supporting the receiving surface component from a back side of the receiving surface; and a curved shape-changing portion configured to change a curvature radius of the receiving surface from a curvature radius in an initial state thereof to a greater curvature radius than that in the initial state in accordance with a load received by the receiving surface component. The receiving surface component generates a biasing force for returning the curvature radius of the receiving surface to that in the initial state.
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Patent Agency Ranking
公开(公告)号：US20190307251A1
公开(公告)日：2019-10-10
申请号：US16307836
申请日：2017-06-06
Applicant: OKAMURA CORPORATION
Inventor： Yuuichirou TAKAGI , Hiroshi MASUNAGA , Ryo IGARASHI , Syouichi IZAWA
Abstract: An armrest according to the present invention includes a support member (8a, 215, 308a) which is a support structure, and an armrest main body (8b, 216, 308b), the armrest main body (8b, 216, 308b) includes a lower layer member (8j) including an operation lever (8p, 235, 308p) which is supported by a support member (8a, 215, 308a) to be movable in a forward-and-rearward direction and is operated by a seated person, and an upper layer member (8k) supported by the lower layer member (8j) to be movable in right-and-left direction, and the upper layer member (8k) covers the operation lever (8p, 235, 308p) at a base position in the right-and-left direction.
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公开(公告)号：US20160120320A1
公开(公告)日：2016-05-05
申请号：US14896351
申请日：2014-06-06
Applicant: OKAMURA CORPORATION
Inventor： Ryo IGARASHI , Hiroshi MASUNAGA
Abstract: A chair is provided in which a seat-receiving member is provided with outward flanges for regulating upward/downward displacement to support left and right lateral edges of a seat plate. Engaging grooves supported by the outward flanges are provided at the respective left and right lateral edges of the seat plate. Warpage allowable parts in which warpage deformation of the lateral edges is allowed without the upward displacement being regulated by the seat receiving member are provided in regions of the left and right lateral edges of the seat plate, in which the regions are located at a rear side from engagement parts between the engaging grooves and the outward flanges. With this constitution, it is possible to prevent the seat plate from being detached from the seat-receiving member while ensuring that, when an user is seated, the sides of the buttocks of the user are reliably held, and thus improve the seating stability of a seat body.
Abstract translation: 提供了一种椅子，其中座椅接收构件设置有用于调节向上/向下位移的向外凸缘，以支撑座板的左侧和右侧边缘。 由向外的凸缘支撑的啮合槽设置在座板的相应的左侧和右侧边缘处。 在所述座板的左右侧边缘的区域位于后侧的区域中设置有允许侧边缘的翘曲变形而没有由所述座椅接收构件调节的向上位移的翘曲允许部件 从接合槽和向外凸缘之间的接合部分。 利用这种结构，可以防止座板从座椅接收构件脱离，同时确保当使用者坐下时，使用者的臀部的侧面被可靠地保持，从而提高了座椅的座位稳定性 一个座位。
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公开(公告)号：US20250000259A1
公开(公告)日：2025-01-02
申请号：US18694781
申请日：2022-03-07
Applicant: OKAMURA CORPORATION
Inventor： Hiroshi MASUNAGA , Syunsuke ISHIMARU , Syouichi IZAWA , Shinpei TOTSUKA
Abstract: A chair includes a support base body portion; a backrest rotatably supported with respect to the support base body portion on an axis in a width direction of the support base body portion and being displaceable from an initial state to an inclined state of being inclined rearward; a biasing member configured to bias the backrest in the inclined state, in a direction of returning to the initial state; an adjuster configured to adjust a biasing force of the biasing member; and an operating member joined to the adjuster and configured to operate the adjuster, wherein the biasing member is provided in the backrest or the support base body portion, the adjuster is provided in the backrest, and the operating member is disposed behind the axis and on one side of the backrest in the width direction.
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公开(公告)号：US20210337971A1
公开(公告)日：2021-11-04
申请号：US17285987
申请日：2019-10-17
Applicant: OKAMURA CORPORATION
Inventor： Hiroshi MASUNAGA , Syunsuke ISHIMARU
Abstract: A backrest includes: a backrest body against which a seated person leans a back thereof, a backrest support positioned behind and supporting the backrest body; and an armrest body provided outside in a width direction of the backrest body and supported by the backrest support so as to move up and down at a position separated from the backrest body. A chair includes the above-described backrest.
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公开(公告)号：US20190298071A1
公开(公告)日：2019-10-03
申请号：US16307855
申请日：2017-06-08
Applicant: OKAMURA CORPORATION
Inventor： Hiroshi MASUNAGA , Ryo IGARASHI , Syouichi IZAWA
IPC: A47C7/54
Abstract: An armrest (8, 208) and a chair (100, 200) according to the present invention are provided with: an armrest body (8b, 208b) which is a movable member including a placing surface for supporting a limb of a seated person, and which is supported by a support rod (8a, 208a) from below so as to be movable in a horizontal direction; and a through-space (S, 200S) which is a guide portion indicating the position to be touched by the seated person when moving the armrest body (8b, 208b).
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