JP2022158152A - Backrest reclining support structure - Google Patents

Backrest reclining support structure Download PDF

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Publication number
JP2022158152A
JP2022158152A JP2021062853A JP2021062853A JP2022158152A JP 2022158152 A JP2022158152 A JP 2022158152A JP 2021062853 A JP2021062853 A JP 2021062853A JP 2021062853 A JP2021062853 A JP 2021062853A JP 2022158152 A JP2022158152 A JP 2022158152A
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Japan
Prior art keywords
rod
backrest
pivot
threaded
lumbar support
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呉玉玲
Yuling Wu
ローランド サンダー、アーミン
Rowland Sundar Armin
マッゾン、ルカ
Masson Luca
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Chukyo Coltd
Chuo Malleable Iron Co Ltd
Comfordy Co Ltd
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Chukyo Coltd
Chuo Malleable Iron Co Ltd
Comfordy Co Ltd
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Priority to JP2021062853A priority Critical patent/JP2022158152A/en
Publication of JP2022158152A publication Critical patent/JP2022158152A/en
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  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)

Abstract

To provide a backrest reclining support structure which is capable of adjusting a reclining angle of a backrest to a desired angle and makes sitting comfort because a user's waist back part adheres.SOLUTION: A backrest reclining support structure includes at least one lumbar support arm 1 and a backrest body 2. The lumbar support arm 1 is provided with a first screw part 11 at an upper end. Below the first screwing part 11 is provided a first pivotally attaching part 12. The first pivotally attaching part 12 is pivotally attached to one end of a swing arm 13 via a pin shaft 121. The backrest body 2 has: two first rod parts 21 provided on left and right both sides in a vertical direction; a second rod part 22 and a third rod part 23 provided laterally in the vertical direction. To both ends of the second rod part 22 and the third rod part 23, the two first rod parts 21 are connected respectively. A hollow area 24 is surrounded by the two first rod parts 21, the second rod part 22, and the third rod part 23 and defined.SELECTED DRAWING: Figure 1

Description

本発明は、背凭れリクライニング支持構造に関し、特に、背凭れのリクライニング角度を所望の角度に調整することができるとともに、使用者の腰背部に密着するため座り心地が良い、背凭れリクライニング支持構造に関する。 TECHNICAL FIELD The present invention relates to a backrest reclining support structure, and more particularly to a backrest reclining support structure that can adjust the reclining angle of the backrest to a desired angle and is comfortable to sit on because it is in close contact with the user's lower back. .

一般の椅子は、座るという基本的な機能以外に、リクライニング機能も有し、仕事などで疲れたときに、背凭れのリクライニング角度を所望の角度に調整し、背凭れに凭れて休憩などに使用することができる。
従来の背凭れの大部分は、硬質背板の弾性力が十分でなく、使用者の背部を背凭れに凭せかけると、使用者の背部が痛みを感じて不快に感じる他、背部を背凭れに密着させることが困難であるため、長時間座ると腰痛になる虞があった。 In addition to the basic function of sitting, ordinary chairs also have a reclining function. When you are tired from work, you can adjust the reclining angle of the backrest to the desired angle and use it to rest on the backrest. can do.
In most of the conventional backrests, the elastic force of the hard backboard is not sufficient. Since it is difficult to make it adhere to the recline, sitting for a long time may cause back pain.

こうした現状に鑑み、本発明者は鋭意研究を重ねた結果、実用的価値のある背凭れリクライニング支持構造を完成したものである。 In view of these circumstances, the present inventors have made intensive studies and completed a reclining support structure with a practical value.

本発明の主な目的は、背凭れのリクライニング角度を所望の角度に調整することができるとともに、使用者の腰背部が密着されるため座り心地が良い、背凭れリクライニング支持構造を提供することにある。 A main object of the present invention is to provide a support structure for reclining a backrest, which can adjust the reclining angle of the backrest to a desired angle and which is comfortable to sit on because the user's lower back is in close contact with the backrest. be.

本発明の背凭れリクライニング支持構造は、背凭れ本体とランバーサポートアームの上端とが螺合部を介して枢着され、背凭れ本体の下端とランバーサポートアームとがスイングアームを介して接続され、使用者が背凭れ本体に凭れかかって後方にリクライニングしたときに、ランバーサポートアームの上端の枢着箇所が回転点として用いられて背凭れ本体にリクライニング角度が形成され、背凭れ本体の下方とランバーサポートアームとの間のスイングアームの牽引位置拘束により、背凭れ本体のリクライニング角度を適切な角度に維持することができる。
このため、使用者は背凭れ本体上に安全に凭れかかることができる。また、背凭れ本体の両側に設けられた杆部には、弾性部がそれぞれ設けられ、これら弾性部を利用することにより、背凭れ本体に使用者が凭れかかったときに、使用者の腰背部が背凭れ本体上に完全に密着されて快適に支えられるため座り心地が良い。 In the backrest reclining support structure of the present invention, the backrest main body and the upper end of the lumbar support arm are pivotally connected via a threaded portion, the lower end of the backrest main body and the lumbar support arm are connected via the swing arm, When the user leans against the backrest body and reclines backward, the pivot point at the upper end of the lumbar support arm is used as a pivot point to form a reclining angle in the backrest body, and the lower part of the backrest body and the lumbar. The retraction position constraint of the swing arm between the support arm allows the reclining angle of the backrest main body to be maintained at an appropriate angle.
Therefore, the user can safely lean back on the backrest body. In addition, the rods provided on both sides of the backrest main body are provided with elastic portions, respectively. The backrest body is completely in close contact with the body of the backrest and is comfortably supported.

本発明の一実施形態に係る背凭れリクライニング支持構造を示す分解斜視図である。1 is an exploded perspective view of a backrest reclining support structure according to an embodiment of the present invention; FIG. 本発明の一実施形態に係る背凭れリクライニング支持構造を示す斜視図である。1 is a perspective view of a backrest reclining support structure according to one embodiment of the present invention; FIG. 本発明の一実施形態に係る背凭れリクライニング支持構造の使用状態の説明図（１）である。It is explanatory drawing (1) of the use condition of the backrest reclining support structure which concerns on one Embodiment of this invention. 本発明の一実施形態に係る背凭れリクライニング支持構造の使用状態の説明図（２）である。It is explanatory drawing (2) of the use condition of the backrest reclining support structure which concerns on one Embodiment of this invention. 本発明の一実施形態に係る背凭れリクライニング支持構造の使用状態の説明図（３）である。It is explanatory drawing (3) of the use condition of the backrest reclining support structure which concerns on one Embodiment of this invention.

まず、図１を参照する。図１に示すように、本発明の一実施形態に係る背凭れリクライニング支持構造は、少なくとも１つのランバーサポートアーム（ｌｕｍｂｅｒ ｓｕｐｐｏｒｔ ａｒｍ）１及び背凭れ本体２から構成されてなる。 First, refer to FIG. As shown in FIG. 1 , the backrest reclining support structure according to one embodiment of the present invention is composed of at least one lumber support arm 1 and a backrest body 2 .

ランバーサポートアーム１は、左右対称の２つのランバーサポートアーム１から構成される。ランバーサポートアーム１の上端には、第１の螺合部１１が設けられ、第１の螺合部１１下方の適宜な箇所に第１の枢着部１２が設けられ、第１の枢着部１２と、スイングアーム１３の一端とにはピン軸１２１が挿設されて互いに枢着される。 The lumbar support arm 1 is composed of two symmetrical lumbar support arms 1 . A first threaded portion 11 is provided at the upper end of the lumbar support arm 1, and a first pivotal portion 12 is provided at an appropriate location below the first threaded portion 11. 12 and one end of the swing arm 13, a pin shaft 121 is inserted and pivoted to each other.

背凭れ本体２は、左右両側に縦向きに設けられた２つの第１の杆部２１と、上下に横向きに設けられた第２の杆部２２及び第３の杆部２３と、を有する。第２の杆部２２及び第３の杆部２３の両端には、２つの第１の杆部２１がそれぞれ接続される。２つの第１の杆部２１と、第２の杆部２２と、第３の杆部２３とにより取り囲まれて中空領域２４が画成される。この中空領域２４には、第４の杆部２５が横設される。第４の杆部２５の両端には、２つの第１の杆部２１がそれぞれ接続される。
第４の杆部２５上には、少なくとも１つの第２の螺合部２５１が設けられる。本実施形態において、第４の杆部２５の左右両端上に設けられた２つの第２の螺合部２５１と、２つのランバーサポートアーム１の第１の螺合部１１とには、回転軸１４が挿設されて互いに枢着される。
第３の杆部２３上には、少なくとも１つの第２の枢着部２３１が設けられる。本実施形態の第３の杆部２３の左右両側に設けられた２つの第２の枢着部２３１と、２つのランバーサポートアーム１に枢着された２つのスイングアーム１３の他端とには、枢軸１５が挿設されて互いに枢着される。
第１の螺合部１１及び第２の螺合部２５１に回転軸１４が挿設される挿設方向と、第１の枢着部１２とスイングアーム１３の一端とにピン軸１２１が挿設される挿設方向と、第２の枢着部２３１とスイングアーム１３の他端とに枢軸１５が挿設される挿設方向とは同様にＸ軸方向である。２つの第１の杆部２１は、上縁から下方向にかけて徐々に傾いた下斜め部２１１と、下縁から上方向にかけて徐々に傾いた上斜め部２１２とを有し、下斜め部２１１と上斜め部２１２とは弾性部２１３を介して接続される。弾性部２１３は、弧状突設される。２つの第１の杆部２１の弾性部２１３は、第３の杆部２３と第４の杆部２５との間に位置する。弾性部２１３上には、弾性力を生じさせる複数の切欠溝２１４が形成される。 The backrest main body 2 has two first rod portions 21 vertically provided on both left and right sides, and a second rod portion 22 and a third rod portion 23 horizontally provided vertically. Two first rod portions 21 are connected to both ends of the second rod portion 22 and the third rod portion 23, respectively. A hollow region 24 is defined by being surrounded by two first rods 21 , a second rod 22 and a third rod 23 . A fourth rod portion 25 is horizontally provided in the hollow region 24 . Two first rod portions 21 are connected to both ends of the fourth rod portion 25, respectively.
At least one second threaded portion 251 is provided on the fourth rod portion 25 . In this embodiment, the two second threaded portions 251 provided on the left and right ends of the fourth rod portion 25 and the first threaded portions 11 of the two lumbar support arms 1 are connected to the rotation shafts. 14 are inserted and pivoted to each other.
At least one second pivot 231 is provided on the third rod 23 . The two second pivot portions 231 provided on the left and right sides of the third rod portion 23 of the present embodiment and the other ends of the two swing arms 13 pivotally attached to the two lumbar support arms 1 have , a pivot 15 is inserted and pivoted to each other.
A pin shaft 121 is inserted in the direction in which the rotary shaft 14 is inserted into the first screwing portion 11 and the second screwing portion 251 and one end of the swing arm 13 and the first pivoting portion 12 . The direction in which the shaft 15 is inserted and the direction in which the pivot 15 is inserted between the second pivot portion 231 and the other end of the swing arm 13 are also the X-axis direction. The two first rod portions 21 each have a lower slanted portion 211 that is gradually inclined downward from the upper edge and an upper slanted portion 212 that is gradually slanted upward from the lower edge. It is connected to the upper oblique portion 212 via the elastic portion 213 . The elastic portion 213 is arcuately protruded. The elastic portions 213 of the two first rods 21 are located between the third rod 23 and the fourth rod 25 . A plurality of notch grooves 214 are formed on the elastic portion 213 to generate elastic force.

図２を参照する。図２に示すように、本実施形態の背凭れリクライニング支持構造を実際に組み立てる際、ランバーサポートアーム１の前方に背凭れ本体２を配置し、背凭れ本体２の第４の杆部２５上に設けられた２つの第２の螺合部２５１と、２つのランバーサポートアーム１の上端の第１の螺合部１１とに、回転軸１４が挿設されて互いに枢着される。背凭れ本体２の第３の杆部２３上に設けられた２つの第２の枢着部２３１と、２つのランバーサポートアーム１の第１の枢着部１２とに枢軸１５が挿設され、スイングアーム１３がそれぞれ枢着される。 Please refer to FIG. As shown in FIG. 2, when actually assembling the backrest reclining support structure of this embodiment, the backrest main body 2 is arranged in front of the lumbar support arm 1, and the fourth rod portion 25 of the backrest main body 2 is placed on the backrest main body 2. The rotating shaft 14 is inserted into the two second threaded portions 251 provided and the first threaded portions 11 at the upper ends of the two lumbar support arms 1 and pivotally connected to each other. The pivot shafts 15 are inserted into the two second pivot portions 231 provided on the third rod portion 23 of the backrest body 2 and the first pivot portions 12 of the two lumbar support arms 1, Swing arms 13 are pivoted respectively.

第１の螺合部１１及び第２の螺合部２５１に回転軸１４が挿設される挿設方向と、第１の枢着部１２及びスイングアーム１３の一端にピン軸１２１が挿設される挿設方向と、第２の枢着部２３１及びスイングアーム１３の他端に枢軸１５が挿設される挿設方向とはそれぞれ同様にＸ軸方向であり、第１の螺合部１１及び第２の螺合部２５１の揺動方向と、スイングアーム１３の揺動方向とが同様にＺ軸方向に制限される。
図３を併せて参照する。図３に示すように、本実施形態の背凭れ構造が取り付けられた椅子の座面３に、使用者が座り、背凭れ本体２に背部を凭れかけて後方にリクライニングすると、図４に示すように、背凭れ本体２は、第４の杆部２５とランバーサポートアーム１の上端との枢着箇所を回転点として用い、使用者が凭れかかって加える力に応じてリクライニング角度を所望の角度にすることができる。
図５を参照する。図５に示すように、背凭れ本体２下方の第３の杆部２３とランバーサポートアーム１とが、スイングアーム１３を介して枢着されて連結されるようにし、背凭れ本体２に対して牽引して位置拘束し、背凭れ本体２のリクライニング角度を適切な角度に維持することができるため、使用者は背凭れ本体２上に安全に凭れかかることができる。 The direction in which the rotating shaft 14 is inserted into the first screwing portion 11 and the second screwing portion 251 and the direction in which the pin shaft 121 is inserted into the first pivot portion 12 and one end of the swing arm 13 are shown. and the insertion direction in which the pivot shaft 15 is inserted into the second pivot portion 231 and the other end of the swing arm 13 are respectively the X-axis direction. The swinging direction of the second threaded portion 251 and the swinging direction of the swing arm 13 are similarly limited to the Z-axis direction.
Also refer to FIG. As shown in FIG. 3, when a user sits on the seat surface 3 of the chair to which the backrest structure of the present embodiment is attached, and reclines backward while leaning the back against the backrest body 2, as shown in FIG. In addition, the backrest main body 2 uses the pivot point between the fourth rod portion 25 and the upper end of the lumbar support arm 1 as a rotation point, and adjusts the reclining angle to a desired angle according to the force applied by the user. can do.
Please refer to FIG. As shown in FIG. 5, the third rod portion 23 below the backrest main body 2 and the lumbar support arm 1 are pivotally connected via the swing arm 13, and the backrest main body 2 is connected. The user can safely lean back on the backrest body 2 because the backrest body 2 can be pulled and restrained and the reclining angle of the backrest body 2 can be maintained at an appropriate angle.

また、背凭れ本体２の２つの第１の杆部２１に弾性部２１３が設けられ、弾性部２１３により背凭れ本体２が使用者の凭れかかる力に応じて適切に弾性変形するため、リクライニング角度が如何なる角度になっても、使用者は腰背部が背凭れ本体２上に完全に密着されて快適に支えられるため、使用者が椅子に長時間座っても腰痛となることを防ぐことができる。 In addition, since the elastic portions 213 are provided on the two first rod portions 21 of the backrest main body 2 and the elastic portions 213 cause the backrest main body 2 to appropriately elastically deform according to the force applied by the user, the reclining angle is At any angle, the user's lower back is completely and comfortably supported on the backrest main body 2, so that the user can be prevented from suffering from lower back pain even if the user sits on the chair for a long time. .

上述したことから分かるように、本発明の背凭れリクライニング支持構造は、以下（１）及び（２）の長所を有する。
（１）背凭れ本体とランバーサポートアームとが螺合部を介して揺動可能に枢着され、使用者が凭れかかって加える力に応じて背凭れ本体のリクライニング角度を所望の角度にし、背凭れ本体とランバーサポートアームの下端とがスイングアームを介して枢着されているため、背凭れ本体に牽引位置拘束機能が発生し、使用者は背凭れ本体上に安全に凭れかかることができる。
（２）背凭れ本体の両側に設けられた杆部には、弾性部がそれぞれ設けられ、弾性部により背凭れ本体を弾性変形させることができるため、リクライニング角度が如何なる角度になっても、使用者の腰背部が背凭れ本体上に完全に密着されて快適に支えられるため座り心地が良い。 As can be seen from the above, the backrest reclining support structure of the present invention has the following advantages (1) and (2).
(1) The backrest main body and the lumbar support arm are pivotally connected via a threaded portion so that the reclining angle of the backrest main body is adjusted to a desired angle in accordance with the force applied by the user while leaning on the backrest. Since the backrest main body and the lower end of the lumbar support arm are pivotally connected via the swing arm, the backrest main body has a traction position restraining function, and the user can safely lean on the backrest main body.
(2) Elastic parts are provided on the rods provided on both sides of the backrest body, and the elastic parts can elastically deform the backrest body. Since the lower back of the person is completely brought into close contact with the main body of the backrest and comfortably supported, it is comfortable to sit on.

１ ランバーサポートアーム
２ 背凭れ本体
３ 座面
１１ 第１の螺合部
１２ 第１の枢着部
１３ スイングアーム
１４ 回転軸
１５ 枢軸
２１ 第１の杆部
２２ 第２の杆部
２３ 第３の杆部
２４ 中空領域
２５ 第４の杆部
１２１ ピン軸
２１１ 下斜め部
２１２ 上斜め部
２１３ 弾性部
２１４ 切欠溝
２３１ 第２の枢着部
２５１ 第２の螺合部 1 lumbar support arm 2 backrest main body 3 seat surface 11 first threaded portion 12 first pivotally attached portion 13 swing arm 14 rotating shaft 15 pivotal shaft 21 first rod portion 22 second rod portion 23 third rod Part 24 Hollow area 25 Fourth rod part 121 Pin shaft 211 Lower oblique part 212 Upper oblique part 213 Elastic part 214 Notch groove 231 Second pivotal attachment part 251 Second screwing part

Claims (3)

少なくとも１つのランバーサポートアーム及び背凭れ本体を備えた、背凭れリクライニング支持構造であって、
前記ランバーサポートアームは、第１の螺合部が上端に設けられ、前記第１の螺合部の下方には、第１の枢着部が設けられ、前記第１の枢着部は、ピン軸を介してスイングアームの一端に枢着され、
前記背凭れ本体は、左右両側に縦向きに設けられた２つの第１の杆部と、上下に横向きに設けられた第２の杆部及び第３の杆部とを有し、
前記第２の杆部及び前記第３の杆部の両端には、２つの前記第１の杆部がそれぞれ接続され、
２つの前記第１の杆部と、前記第２の杆部と、前記第３の杆部とにより取り囲まれて中空領域が画成され、
前記中空領域には、第４の杆部が横設され、
前記第４の杆部の両端には、２つの前記第１の杆部がそれぞれ接続され、
前記第４の杆部上には、少なくとも１つの第２の螺合部が設けられ、
前記第２の螺合部と、前記ランバーサポートアーム上の前記第１の螺合部とには、回転軸が挿設されて互いに枢着され、
前記第３の杆部上には、少なくとも１つの第２の枢着部が設けられ、
前記第２の枢着部と、前記ランバーサポートアーム上の前記スイングアームの他端とには、枢軸が挿設されて互いに枢着され、
前記第１の螺合部及び前記第２の螺合部に前記回転軸が挿設される挿設方向と、前記第１の枢着部と前記スイングアームの一端とに前記ピン軸が挿設される挿設方向と、前記第２の枢着部及び前記スイングアームの他端に枢軸が挿設される挿設方向とは同じ方向であり、
前記第１の杆部上には、弾性部がそれぞれ設けられ、
前記第１の杆部の前記弾性部は、前記第３の杆部と前記第４の杆部との間にそれぞれ位置することを特徴とする、
背凭れリクライニング支持構造。 A backrest reclining support structure comprising at least one lumbar support arm and a backrest body, comprising:
The lumbar support arm is provided with a first threaded portion at its upper end, and a first pivotal portion is provided below the first threaded portion, and the first pivotal portion is a pin. pivotally attached to one end of the swing arm via a shaft,
The backrest main body has two first rods vertically provided on both left and right sides, and a second and third rods horizontally provided vertically,
The two first rod portions are connected to both ends of the second rod portion and the third rod portion, respectively,
A hollow region is defined by two of the first rods, the second rods and the third rods, and
A fourth rod is horizontally provided in the hollow region,
Two of the first rods are connected to both ends of the fourth rod,
At least one second threaded portion is provided on the fourth rod portion,
A rotating shaft is inserted into the second threaded portion and the first threaded portion on the lumbar support arm and pivotally connected to each other,
at least one second pivot point on the third rod;
a pivot shaft is inserted into the second pivot portion and the other end of the swing arm on the lumbar support arm and pivotally connected to each other;
The direction in which the rotating shaft is inserted into the first threaded portion and the second threaded portion, and the pin shaft is inserted into the first pivot portion and one end of the swing arm. and the insertion direction in which the pivot shaft is inserted in the second pivot portion and the other end of the swing arm are the same direction,
An elastic portion is provided on each of the first rod portions,
The elastic portion of the first rod portion is positioned between the third rod portion and the fourth rod portion,
Backrest reclining support structure. 前記背凭れ本体の前記第１の杆部は、上縁から下方向にかけて徐々に傾いた下斜め部と、下縁から上方向にかけて徐々に傾いた上斜め部とをそれぞれ有し、前記下斜め部と前記上斜め部とは、弾性部を介して接続され、前記弾性部上には、複数の切欠溝が形成されることを特徴とする請求項１に記載の背凭れリクライニング支持構造。 The first rod portion of the backrest main body has a lower oblique portion gradually inclined downward from the upper edge and an upper oblique portion gradually inclined upward from the lower edge. 2. The backrest reclining support structure according to claim 1, wherein the portion and the upper oblique portion are connected via an elastic portion, and a plurality of notch grooves are formed on the elastic portion. ２つの前記ランバーサポートアームを備え、前記ランバーサポートアームは、第１の螺合部が上端にそれぞれ設けられ、前記第１の螺合部の下方には、前記スイングアームの一端が枢着される第１の枢着部がそれぞれ設けられ、前記背凭れ本体の前記第４の杆部上には、２つの第２の螺合部が設けられ、前記第２の螺合部と、前記ランバーサポートアームの前記第１の螺合部とに、回転軸がそれぞれ挿設されて互いに枢着され、前記第３の杆部上には、２つの第２の枢着部が設けられ、２つの前記第２の枢着部と、前記ランバーサポートアームに枢着された２つの前記スイングアームの他端とに枢軸がそれぞれ挿設されて互いに枢着されることを特徴とする請求項１に記載の背凭れリクライニング支持構造。 There are two lumbar support arms, each of which has a first threaded portion at its upper end, and one end of the swing arm is pivotally attached below the first threaded portion. A first pivot portion is provided respectively, and two second threaded portions are provided on the fourth rod portion of the backrest body, the second threaded portion and the lumbar support. Rotating shafts are respectively inserted into and pivotally connected to the first threaded portions of the arms, and two second pivotal portions are provided on the third rod portion, and the two 2. The apparatus according to claim 1, wherein pivots are respectively inserted into a second pivot portion and the other end of the two swing arms pivotally connected to the lumbar support arm, and pivotally connected to each other. Backrest reclining support structure.
JP2021062853A 2021-04-01 2021-04-01 Backrest reclining support structure Pending JP2022158152A (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011139954A (en) * 2011-04-25 2011-07-21 Itoki Corp Chair with backrest
JP2019083958A (en) * 2017-11-06 2019-06-06 株式会社イトーキ Chair
KR102071448B1 (en) * 2019-05-16 2020-01-30 유한회사 애니체 Back rest tilting structure of chair

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011139954A (en) * 2011-04-25 2011-07-21 Itoki Corp Chair with backrest
JP2019083958A (en) * 2017-11-06 2019-06-06 株式会社イトーキ Chair
KR102071448B1 (en) * 2019-05-16 2020-01-30 유한회사 애니체 Back rest tilting structure of chair

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