JP2017169789A

JP2017169789A - seat

Info

Publication number: JP2017169789A
Application number: JP2016058971A
Authority: JP
Inventors: 大坂田; Ora Sakata
Original assignee: Toyota Boshoku Corp
Current assignee: Toyota Boshoku Corp
Priority date: 2016-03-23
Filing date: 2016-03-23
Publication date: 2017-09-28

Abstract

PROBLEM TO BE SOLVED: To provide a seat which can be switched between a seatable state in a substantially standing posture and a seatable state in a normal seating posture.SOLUTION: A seat 1 includes: a pole member 11; an upper slider 121 and a middle slider 122 which are connected so as to be vertically movable to the pole member 11; a first link 21 having one end thereof being supported to the middle slider 122 so as to be vertically rotatable and the other end thereof being mounted to a seating part 40 so as to be inclined frontward and downwardly in a standing-seat state X1; a second link 22 having one end thereof being supported to the upper slider 121 so as to be vertically rotatable, the other end thereof being supported to a part of the first link 21 so as to be vertically rotatable, and a back rest portion 30 being mounted on a front side; a driving mechanism 13 which vertically drives the upper slider 121 to the pole member 11; and a rotating mechanism 60 which vertically rotates the first link 21 to the middle slider 122 according to a descending operation of the middle slider 122.SELECTED DRAWING: Figure 2

Description

本発明は、座席に関する。 The present invention relates to a seat.

特許文献１には、着座者の背部を支持する背凭れ部と、臀部を支持する座部と、を備えた座席が開示されている。この座席は着座者が略立ち姿勢で着座できる座席である。このため、座席の座部の臀部支持面は、略立ち姿勢の着座者の臀部を支持可能なように、略立ち姿勢の着座者の臀部から大腿部にかけての身体形状に対応して前下方に傾斜している。背凭れ部及び座部は、座部の下側に取付けられた支柱により支持されており、支柱高さ調整機構で支柱が上下に伸縮させられることにより高さの調整が可能となっている。 Patent Document 1 discloses a seat including a backrest portion that supports a back portion of a seated person and a seat portion that supports the hip portion. This seat is a seat that a seated person can sit in a substantially standing posture. For this reason, the buttock support surface of the seat portion of the seat corresponds to the body shape from the buttock of the seated occupant in the substantially standing posture to the thigh so that the buttock of the seated occupant in the substantially standing posture can be supported. It is inclined to. The backrest and the seat are supported by a support attached to the lower side of the seat, and the height can be adjusted by extending and lowering the support up and down by a support height adjusting mechanism.

特開２０１２−１９２９０１号公報JP 2012-192901 A

上記特許文献１に開示された座席においては、着座者は、略立ち姿勢で座席に着座しているため、少ない力で座席から起立することができる。このため、座席から起立する際の労力を軽減することができ、例えば、着座者が一旦座席に着座しても短時間で起立する必要のある状況において好ましい。しかし、略立ち姿勢での着座は着座者の足にかかる負担が大きいため、長時間着座していると着座者の足が疲労する。このため、着座者が一旦座席に着座したら長時間着座したままでいられる状況においては、略立ち姿勢から腰を低く落とした通常の着座姿勢に切り替えて着座したい、という要請があった。 In the seat disclosed in Patent Document 1, since the seated person is seated on the seat in a substantially standing posture, the seat can stand up from the seat with a small force. For this reason, the labor at the time of standing up from a seat can be reduced, for example, in the situation where a seated person needs to stand up in a short time even if it sits down on a seat once. However, since sitting in a substantially standing posture places a heavy burden on the seated person's feet, the seated person's feet become tired if seated for a long time. For this reason, in a situation where a seated person can remain seated for a long time once seated on the seat, there has been a demand to switch from a substantially standing posture to a normal seating posture with his / her waist lowered.

かかる問題に鑑み本発明の課題は、略立ち姿勢で着座可能な状態と、通常の着座姿勢で着座可能な状態と、を切り替えることのできる座席を提供することにある。 In view of such a problem, an object of the present invention is to provide a seat that can be switched between a state in which it can be seated in a substantially standing posture and a state in which it can be seated in a normal seating posture.

本発明の第１発明は、略立ち姿勢の着座者の背部及び臀部を支持する立ち座り状態と通常の着座姿勢の着座者の背部及び臀部を支持する着座状態とを採ることができる座席であって、該座席の後側において該座席が配設される構造体に対して上下方向に延びて固定された左右一対の柱状部材と、該一対の柱状部材のそれぞれに対して一体として上下動可能に連結されるとともに前記立ち座り状態において上下に離隔して配設された上側の第１移動体、下側の第２移動体と、一端部側が前記第２移動体に対し上下方向回転可能に支持されるとともに他端部側に着座者の臀部を支持する座部が前記立ち座り状態において前下方に傾斜して配設された第１リンクと、一端部側が前記第１移動体に対し上下方向回転不能に支持されるとともに他端部側が前記第２移動体に上下方向回転不能に支持され前側に着座者の背部を支持する背凭れ部が前記立ち座り状態において前記柱状部材と略平行に延びて配設された、又は、一端部側が前記第１移動体に対し上下方向回転可能に支持されるとともに他端部側が前記第２移動体又は前記第１リンクの一部に対し上下方向回転可能に支持され前側に着座者の背部を支持する背凭れ部が前記立ち座り状態において前記柱状部材と略平行に延びて配設された、第２リンクと、前記第１移動体又は前記第２移動体を前記柱状部材に対して上下に駆動する駆動機構と、前記第２移動体の下降に伴って前記第１リンクを前記第２移動体に対して上方に回転させるリンク回転機構と、を備えることを特徴とする。 The first invention of the present invention is a seat that can take a standing state that supports the back and buttocks of a seated person in a substantially standing posture and a seated state that supports the back and buttocks of a seated person in a normal sitting position. And a pair of left and right columnar members fixed in a vertical direction with respect to the structure on which the seat is disposed on the rear side of the seat, and can be moved up and down integrally with each of the pair of columnar members. The first moving body on the upper side, the second moving body on the lower side, and the one end side of the first moving body that are connected to each other in the standing and sitting state so as to be vertically rotatable with respect to the second moving body. A first link that is supported and has a seat portion that supports the buttocks of the seated person on the other end side and is inclined forward and downward in the standing-up state, and one end portion is located above and below the first moving body. The other end side is supported while preventing rotation A backrest portion that is supported by the second moving body so as not to rotate in the vertical direction and supports the back of the seated person on the front side is disposed so as to extend substantially parallel to the columnar member in the standing state, or one end side is The other movable body is supported so as to be able to rotate in the vertical direction with respect to the first moving body, and the other side is supported so as to be able to rotate in the vertical direction with respect to the second moving body or a part of the first link. And a second link, and the first moving body or the second moving body is driven up and down with respect to the columnar member. And a link rotation mechanism that rotates the first link upward with respect to the second moving body as the second moving body descends.

第１発明によれば、第１リンクは、一端部側が、第２移動体に上下方向回転可能に支持されており、他端部側に、座部が配設された構成となっている。この座部は、座席が立ち座り状態にあるとき前下方に傾斜している。このため、座部の臀部支持面の傾斜が、略立ち姿勢の着座者の臀部から大腿部にかけての身体形状に対応したものとなり、座部により略立ち姿勢の着座者の臀部を支持することが可能となる。この状態から、第２移動体を下降させると、これにともなって第１リンクが第２移動体に対して上方に回転するため、座部が前上がりに傾斜する。このため、座部の臀部支持面は、通常着座姿勢の着座者の臀部から大腿部にかけての身体形状に対応したものとなり、座部により通常の着座姿勢の着座者の臀部を支持することが可能となる。 According to the first invention, the first link is configured such that one end portion side is supported by the second moving body so as to be vertically rotatable, and a seat portion is disposed on the other end portion side. The seat is inclined forward and downward when the seat is in a standing state. For this reason, the inclination of the buttock support surface of the seat corresponds to the body shape from the buttock to the thigh of the seated person in the substantially standing posture, and the seat part supports the buttock of the seated person in the substantially standing position. Is possible. When the second moving body is lowered from this state, the first link rotates upward with respect to the second moving body, so that the seat portion is inclined upward. For this reason, the buttocks support surface of the seat corresponds to the body shape from the buttocks of the seated person in the normal sitting posture to the thigh, and the seat can support the buttocks of the seated person in the normal sitting posture. It becomes possible.

本発明の第２発明は、第１発明において、前記リンク回転機構は、前記一対の柱状部材のそれぞれに対して一体として上下動可能に連結されるとともに前記立ち座り状態において前記第２移動体から下方に離隔して配設された第３移動体と、一端部側が前記第３移動体に対し上下方向回転可能に支持されるとともに他端部側が前記第２移動体より前側で前記第１リンクに対し上下方向回転可能に支持された第３リンクと、前記一対の柱状部材の前記第３移動体より下側に配設され、前記第２移動体が下降したときに前記第３移動体の下降を禁止して前記第２移動体と前記第３移動体との相対距離を縮めるストッパと、を備えることを特徴とする。 According to a second aspect of the present invention, in the first aspect, the link rotation mechanism is connected to each of the pair of columnar members so as to move up and down as a unit, and from the second moving body in the standing state. A third moving body spaced apart from the lower side, and one end side of the third moving body are supported so as to be vertically rotatable with respect to the third moving body, and the other end side is the front side of the second moving body and the first link. A third link supported so as to be rotatable in the vertical direction, and a pair of columnar members disposed below the third moving body, and when the second moving body is lowered, the third moving body And a stopper for reducing the relative distance between the second moving body and the third moving body by prohibiting lowering.

第２発明によれば、リンク回転機構を、第３移動体、第３リンク及びストッパを備えた簡潔な構成にすることができる。このリンク回転機構では、第２移動体を下降させると、第３移動体の下降がストッパに当接して禁止され、第２移動体と第３移動体との相対距離が縮まる。このため、第１リンクの一端部側と第３リンクの一端部とが接近して互いの連結部位を前側に押し出すように回転動作することになる。よって、第１リンクは、第２移動体に対して上方に回転することになる。 According to the second aspect of the invention, the link rotation mechanism can have a simple configuration including the third moving body, the third link, and the stopper. In this link rotation mechanism, when the second moving body is lowered, the lowering of the third moving body is prohibited by contacting the stopper, and the relative distance between the second moving body and the third moving body is reduced. For this reason, it rotates so that the one end part side of the 1st link and the one end part of the 3rd link approach, and mutually push a mutual connection part. Therefore, the first link rotates upward with respect to the second moving body.

本発明の第３発明は、第２発明において、前記第２リンクは、一端部側が前記第１移動体に対し上下方向回転可能に支持されるとともに他端部側が前記立ち座り状態において前記第２移動体と前記座部との間かつ前記第２移動体の高さ位置と前記第３移動体の高さ位置との間で前記第１リンクに対し上下方向回転可能に支持されることを特徴とする。 According to a third aspect of the present invention, in the second aspect, the second link is supported such that one end thereof is rotatable in the vertical direction with respect to the first moving body, and the other end is in the standing-sitting state. It is supported between the moving body and the seat portion and between the height position of the second moving body and the height position of the third moving body so as to be rotatable in the vertical direction with respect to the first link. And

第３発明によれば、前側に背凭れ部が配設されている第２リンクは、一端部側が、第１移動体に上下方向回転可能に支持されており、他端部側が、立ち座り状態において第２移動体と座部との間かつ第２移動体の高さ位置と第３移動体の高さ位置との間で第１リンクに対し上下方向回転可能に支持されている。このため、第２移動体が下降して第１リンクが第２移動体に対して上方に回転すると、第２リンクの他端部側が前方に移動させられることになり、背凭れ部が第２リンクの他端部側を中心に後方に傾斜する。よって、第２移動体を下降させることで、自動的に背凭れ部の背凭れ面を後方に倒すことができるため、着座者が上体を若干後傾させて着座した快適な着座姿勢を採ることができる。 According to the third aspect of the present invention, the second link having the backrest portion disposed on the front side is supported by the first moving body so that the first moving body can be rotated in the vertical direction, and the other end side is in a standing and sitting state. Are supported so as to be vertically rotatable with respect to the first link between the second moving body and the seat and between the height position of the second moving body and the height position of the third moving body. For this reason, when the second moving body descends and the first link rotates upward with respect to the second moving body, the other end portion side of the second link is moved forward, and the backrest portion is in the second position. It inclines backward around the other end side of the link. Therefore, by lowering the second moving body, the backrest surface of the backrest portion can be automatically tilted backward, so that the seated person takes a comfortable sitting posture in which the upper body is slightly tilted backward. be able to.

本発明の第４発明は、上記第２発明又は上記第３発明において、一端部側が前記第１リンクの他端部側に対し上下方向回転可能に支持されるとともに他端部側に着座者の大腿部を支持するクッション体が前記立ち座り状態において前記座部より低い高さ位置に位置するように配設された第４リンクと、一端部側が前記第３リンクの一部に対し上下方向回転可能に支持された第５リンクと、一端部側が前記第４リンクの一端部側以外で該第４リンクの一部に対し上下方向回転可能に支持された第６リンクと、前記第５リンクの他端部側と前記第６リンクの他端部側とを前記立ち座り状態において前記第５リンクと前記第６リンクとが左右側面視で略Ｖ字状をなすように上下方向回転可能に連結するピン部材と、前記第１リンクに配設され、該第１リンクが前記第２移動体に対して上方に回転したときにこの回転にともなって前記ピン部材を押し動かして前記第４リンクを前記第１リンクの他端部側に対して上方に回転させるガイド部と、を備えることを特徴とする。 According to a fourth aspect of the present invention, in the second aspect or the third aspect, the one end is supported so as to be rotatable in the vertical direction with respect to the other end of the first link, and the other end is provided with a seated person's side. A fourth link disposed such that a cushion body supporting the thigh is positioned at a lower height than the seat in the standing and sitting state, and one end side is vertically directed with respect to a part of the third link A fifth link rotatably supported; a sixth link whose one end is supported so as to be vertically rotatable with respect to a part of the fourth link other than one end of the fourth link; and the fifth link When the other end portion side of the sixth link and the other end portion side of the sixth link are in the standing position, the fifth link and the sixth link can be rotated in the vertical direction so as to form a substantially V shape in a left-right side view. A pin member to be connected to the first link; When the link rotates upward with respect to the second moving body, the guide pushes the pin member along with the rotation to rotate the fourth link upward with respect to the other end side of the first link. And a section.

略立ち姿勢で座席に着座する際には、座部の前端部が着座者の大腿部に当接すると、圧迫感が生じて座り心地の悪化を招くおそれがあった。このため、略立ち姿勢での着座時には、座部の前後方向の長さが着座者の大腿部に当接しない程度の長さであることが好ましい。一方、通常の着座姿勢で座席に着座する際には、着座者の着座姿勢を安定させて座り心地を確保する観点から、座部の前後方向の長さが着座者の大腿部に当接可能な長さであることが好ましい。第４発明によれば、座席が立ち座り状態にあるとき、第４リンクのクッション体は座部より低い高さ位置に位置される。そして、第２移動体が下降したとき、第４リンクが第１リンクの他端部側に対して上方に回転するため、第４リンクのクッション体が座部に対して前上がりに傾斜する。このため、座席が立ち座り状態にあるときは着座者の臀部のみを支持して大腿部を支持せず、座席が着座状態にあるときは着座者の臀部と大腿部とを支持することができる。このため、立ち座り状態、及び、着座状態の両方における座席の座り心地向上を図ることができる。 When sitting on the seat in a substantially standing posture, if the front end of the seat comes into contact with the thigh of the seated person, a feeling of pressure may occur, which may lead to a deterioration in sitting comfort. For this reason, when sitting in a substantially standing posture, it is preferable that the length of the seat in the front-rear direction is such that it does not contact the thigh of the seated person. On the other hand, when sitting on the seat in the normal sitting posture, the length of the seat portion in the front-rear direction contacts the thigh of the seated person from the viewpoint of stabilizing the seated position of the seated person and ensuring sitting comfort. A possible length is preferred. According to the fourth aspect of the invention, when the seat is standing and sitting, the cushion body of the fourth link is positioned at a lower position than the seat portion. When the second moving body is lowered, the fourth link rotates upward with respect to the other end portion side of the first link, so that the cushion body of the fourth link is inclined forwardly with respect to the seat portion. Therefore, when the seat is standing, only the seated person's buttocks are supported and the thigh is not supported, and when the seat is seated, the seated person's buttocks and thighs are supported. Can do. For this reason, it is possible to improve the sitting comfort of the seat in both the standing and sitting state and the sitting state.

本発明の第５発明は、上記第１発明から上記第４発明のいずれか１つにおいて、前記座席が前記着座状態にあるとき、前記座部の下部とフロアとの間で上下方向に延びて立設する支持部を備えることを特徴とする。 According to a fifth aspect of the present invention, in any one of the first to fourth aspects, when the seat is in the seated state, the seat extends vertically between the lower portion of the seat portion and the floor. It is provided with the support part to stand upright.

第５発明によれば、座席が着座状態にあるとき、座部とフロアとの間で支持部が立設することになる。このため、標準着座姿勢で座席に着座している着座者の体重を、支持部を介して、フロアに対ししっかり支持することができる。 According to the fifth aspect, when the seat is in the seated state, the support portion is erected between the seat portion and the floor. For this reason, the weight of the seated person sitting on the seat in the standard sitting posture can be firmly supported on the floor via the support portion.

本発明の一実施形態に係る座席を小型コミューターカーに取付けた状況を示す側面図である。It is a side view which shows the condition which attached the seat which concerns on one Embodiment of this invention to the small commuter car. 上記実施形態の座席が略立ち姿勢で着座可能な立ち座り状態にあるときを示す側面図である。It is a side view which shows when the seat of the said embodiment exists in the standing-sitting state which can be seated by a substantially standing posture. 上記実施形態の座席が略立ち姿勢で着座可能な立ち座り状態の下限位置にあるときを示す側面図である。It is a side view which shows when the seat of the said embodiment exists in the lower limit position of the standing-sitting state which can be seated by a substantially standing posture. 上記実施形態の座席が通常の着座姿勢で着座可能な着座状態にあるときを示す側面図である。It is a side view which shows when the seat of the said embodiment exists in the seating state which can be seated with a normal seating attitude | position. 上記実施形態の座席の分解斜視図である。It is a disassembled perspective view of the seat of the said embodiment.

図１〜図５は、本発明の一実施形態を示す。本実施形態は、いわゆるコミューターカーと呼ばれる小型車両の客席に本発明を適用した例を示す。各図中、矢印により座席を車両に取付けたときの車両の各方向を示している。以下の説明において、方向に関する記述は、この方向を基準として行うものとする。 1 to 5 show an embodiment of the present invention. This embodiment shows an example in which the present invention is applied to a passenger seat of a small vehicle called a so-called commuter car. In each figure, each direction of the vehicle when the seat is attached to the vehicle is indicated by an arrow. In the following description, the description regarding the direction is made based on this direction.

図１〜図４に示すように、座席１は、車両ＣのフロアＦや図示しない天井部等の車両本体に固定されたポール部材１１と、ポール部材１１に組付けられた上スライダ１２１、中スライダ１２２及び下スライダ１２３と、第１〜第６リンク２１〜２６と、を備える。座席１は、着座者が略立ち姿勢で着座できる立ち座り状態Ｘ１（図２参照）と、通常の着座姿勢で着座できる着座状態Ｘ２（図４参照）と、を採ることができる構成となっている。 As shown in FIGS. 1 to 4, the seat 1 includes a pole member 11 fixed to a vehicle body such as a floor F of a vehicle C and a ceiling portion (not shown), an upper slider 121 assembled to the pole member 11, A slider 122 and a lower slider 123 and first to sixth links 21 to 26 are provided. The seat 1 is configured to be able to take a standing state X1 (see FIG. 2) in which a seated person can sit in a substantially standing posture and a sitting state X2 (see FIG. 4) in which a seated person can be seated in a normal sitting posture. Yes.

図２及び図５に示すように、ポール部材１１は、左右一対に設けられた金属製の丸棒部材であり、後傾した状態で互いに平行に上下方向に延びている。左右のポール部材１１間の間隔は、背凭れ部３０の左右寸法より若干小さい。また、ポール部材１１の下端部のフロアＦより若干上方部位には、ポール部材１１の他の部位より半径が大となっているフランジ状のストッパ１８が固定されている。ポール部材１１が、特許請求の範囲の「柱状部材」に相当する。 As shown in FIGS. 2 and 5, the pole member 11 is a metal round bar member provided in a pair of left and right, and extends in the vertical direction in parallel with each other in a tilted state. The distance between the left and right pole members 11 is slightly smaller than the left and right dimensions of the backrest 30. Further, a flange-like stopper 18 having a radius larger than that of other portions of the pole member 11 is fixed to a portion slightly above the floor F at the lower end portion of the pole member 11. The pole member 11 corresponds to a “columnar member” in the claims.

図２及び図５に示すように、上スライダ１２１、中スライダ１２２及び下スライダ１２３は、それぞれ金属製の中空略円筒状の部材であり、上下方向に延びる円筒形部の外筒部の前部が前後方向に延びる板状部に形成されている。上スライダ１２１、中スライダ１２２及び下スライダ１２３の円筒形部は、その内筒部の直径がポール部材１１の外径よりわずかに大きく、内筒部の内側面にポール部材１１の外周面に対する摩擦抵抗の少ない樹脂皮膜がコーティングされた構成となっている。上スライダ１２１、中スライダ１２２及び下スライダ１２３は、上記円筒形部の内筒部にポール部材１１が挿入されることで、左右のポール部材１１にそれぞれ上下摺動自在に組み付けられる。上スライダ１２１、中スライダ１２２及び下スライダ１２３は、左右のポール部材１１に１つずつ組付けられており、上から順に、上スライダ１２１、中スライダ１２２、下スライダ１２３と並ぶように配設される。左右の上スライダ１２１は、後に詳述する第１シャフトＳ１及び可動連結板１３２により連結されており、一体として動く構成となっている。これと同様に、左右の中スライダ１２２は後に詳述する第２シャフトＳ２により連結されて一体として動く構成となっており、左右の下スライダ１２３は後に詳述する第４シャフトＳ４により連結されて一体として動く構成となっている。左右の上スライダ１２１が、特許請求の範囲の「第１移動体」に相当する。左右の中スライダ１２２が、特許請求の範囲の「第２移動体」に相当する。左右の下スライダ１２３が、特許請求の範囲の「第３移動体」に相当する。 As shown in FIGS. 2 and 5, the upper slider 121, the middle slider 122, and the lower slider 123 are each a hollow, substantially cylindrical member made of metal, and a front portion of an outer cylindrical portion of a cylindrical portion extending in the vertical direction. Is formed in a plate-like portion extending in the front-rear direction. The cylindrical portions of the upper slider 121, the middle slider 122, and the lower slider 123 have a diameter of the inner cylinder portion slightly larger than the outer diameter of the pole member 11, and friction against the outer peripheral surface of the pole member 11 on the inner surface of the inner cylinder portion. It has a configuration in which a resin film with low resistance is coated. The upper slider 121, the middle slider 122, and the lower slider 123 are assembled to the left and right pole members 11 so as to be vertically slidable by inserting the pole member 11 into the inner cylindrical portion of the cylindrical portion. The upper slider 121, the middle slider 122, and the lower slider 123 are assembled to the left and right pole members 11 one by one, and are arranged so as to line up with the upper slider 121, the middle slider 122, and the lower slider 123 in order from the top. The The left and right upper sliders 121 are connected by a first shaft S1 and a movable connecting plate 132, which will be described in detail later, and are configured to move as a unit. Similarly, the left and right middle sliders 122 are connected by a second shaft S2, which will be described in detail later, and move integrally, and the left and right lower sliders 123 are connected by a fourth shaft S4, which will be described in detail later. It is configured to move as a unit. The left and right upper sliders 121 correspond to the “first moving body” in the claims. The left and right middle sliders 122 correspond to the “second moving body” in the claims. The left and right lower sliders 123 correspond to the “third moving body” in the claims.

図２〜図５に示すように、第１リンク２１は、厚さ方向が左右方向と一致するように配設された左右一対の金属製のリンクプレートであり、立ち座り状態Ｘ１において略前下方に傾斜して延びる形状に形成されている。より詳細には、第１リンク２１は、立ち座り状態Ｘ１において前下方に傾斜して直線状に延びる前方延設部２１１と、前方延設部２１１の後端部から屈曲してより急勾配で後上方に傾斜して延びる後方延設部２１２と、を備えている。また、前方延設部２１１の前後方向中央部より若干後側下部には、立ち座り状態Ｘ１において前方に張り出す略円弧状に湾曲して下方に延びる下方延設部２１３が形成されている。下方延設部２１３には、その外形の湾曲形状に対応して延びるガイド長孔２１３Ａが形成されている。左右の第１リンク２１の後方延設部２１２の後端部は、それぞれ、左右の中スライダ１２２の前部に対し上下方向回転可能に支持される。左右の第１リンク２１の前方延設部２１１の前端部側上面には、後に詳述する座部４０が配設される。なお、第１リンク２１の各部の寸法及び連結部位の位置は、座席１が通常の着座姿勢で着座可能な着座状態Ｘ２にあるときに、下方延設部２１３の下端部がフロアＦに当接し、かつ、前方延設部２１１が前方斜め上方へ向けて傾斜して延びた姿勢を採ることのできるものとなっている。また、ガイド長孔２１３Ａの長さ及び曲率は、座席１が略立ち姿勢で着座できる立ち座り状態Ｘ１にあるときに、後に詳述する第３ピンＰ３がガイド長孔２１３Ａの下端部に位置し、座席１が通常の着座姿勢で着座できる着座状態Ｘ２にあるときに、上記第３ピンＰ３がガイド長孔２１３Ａの上端部に位置し、立ち座り状態Ｘ１と着座状態Ｘ２との間においては、第３ピンＰ３がガイド長孔２１３Ａに沿って滑らかに摺動可能なものとなっている。下方延設部２１３が、特許請求の範囲の「ガイド部」に相当する。さらに、下方延設部２１３は、特許請求の範囲の「支持部」にも相当する。 As shown in FIGS. 2 to 5, the first link 21 is a pair of left and right metal link plates disposed so that the thickness direction thereof coincides with the left and right direction. It is formed in the shape which inclines and extends. More specifically, the first link 21 is inclined forward and downward in the standing and sitting state X1 and extends linearly, and the first link 21 is bent from the rear end portion of the front extending portion 211 and is steeper. A rear extending portion 212 extending obliquely rearward and upward. In addition, a lower extending portion 213 that is curved in a substantially arc shape projecting forward in the standing and sitting state X 1 and extends downward is formed at a slightly lower rear side than the center portion in the front-rear direction of the front extending portion 211. A guide elongated hole 213A extending corresponding to the curved shape of the outer shape is formed in the downwardly extending portion 213. The rear end portions 212 of the left and right first links 21 are supported so as to be vertically rotatable with respect to the front portions of the left and right middle sliders 122, respectively. A seat portion 40, which will be described in detail later, is disposed on the upper surface on the front end side of the front extending portion 211 of the left and right first links 21. In addition, the dimension of each part of the first link 21 and the position of the connecting portion are such that the lower end portion of the downwardly extending portion 213 comes into contact with the floor F when the seat 1 is in the seating state X2 in which the seat 1 can be seated in a normal seating posture. And the front extension part 211 can take the attitude | position which inclined and extended toward the front diagonally upward direction. Further, the length and curvature of the guide long hole 213A are such that when the seat 1 is in the standing and sitting state X1 in which the seat 1 can be seated in a substantially standing posture, the third pin P3 described in detail later is positioned at the lower end of the guide long hole 213A. When the seat 1 is in the seating state X2 in which it can be seated in a normal seating posture, the third pin P3 is located at the upper end of the guide slot 213A, and between the standing state X1 and the seating state X2, The third pin P3 can slide smoothly along the guide long hole 213A. The downward extending portion 213 corresponds to a “guide portion” in the claims. Further, the downward extending portion 213 corresponds to a “support portion” in the claims.

図２〜図５に示すように、第２リンク２２は、厚さ方向が左右方向と一致するように配設された左右一対の金属製のリンクプレートであり、立ち座り状態Ｘ１においてポール部材１１と平行に上下方向に延びる略直線形状に形成されている。第２リンク２２の上端部には、後方に屈曲して延びる上突部２２Ａが形成されており、第２リンク２２の下端部には、後下方に傾斜して延びる下突部２２Ｂが形成されている。左右の第２リンク２２の上突部２２Ａは、それぞれ、左右の上スライダ１２１の前部に対し上下方向回転可能に支持される。そして、左右の第２リンク２２の下突部２２Ｂは、それぞれ、左右の第１リンク２１の後方延設部２１２の前端部に対し上下方向回転可能に支持される。なお、第２リンク２２は、後に詳述する背凭れ部３０の左右両側に１つずつ埋設されており、上突部２２Ａが背凭れ部３０の上側後面から外部に突出し、下突部２２Ｂが背凭れ部３０の下面から外部に突出する構成となっている。 As shown in FIGS. 2 to 5, the second link 22 is a pair of left and right metal link plates disposed so that the thickness direction coincides with the left and right direction, and the pole member 11 in the standing and sitting state X 1. It is formed in a substantially linear shape extending in the vertical direction in parallel with the. An upper protrusion 22A that is bent and extends rearward is formed at the upper end of the second link 22, and a lower protrusion 22B that is inclined downward and rearward is formed at the lower end of the second link 22. ing. The upper protrusions 22A of the left and right second links 22 are supported so as to be rotatable in the vertical direction with respect to the front portions of the left and right upper sliders 121, respectively. The lower protrusions 22B of the left and right second links 22 are supported so as to be rotatable in the vertical direction with respect to the front end portions of the rearward extending portions 212 of the left and right first links 21, respectively. The second links 22 are embedded one by one on the left and right sides of the backrest 30 described in detail later. The upper protrusion 22A protrudes outward from the upper rear surface of the backrest 30 and the lower protrusion 22B The back portion 30 is configured to protrude outward from the lower surface of the back portion 30.

図２〜図５に示すように、第３リンク２３は、厚さ方向が左右方向と一致するように配設された左右一対の金属製のリンクプレートであり、立ち座り状態Ｘ１において前上方に傾斜して延びる略直線形状に形成されている。左右の第３リンク２３の後端部は、それぞれ、左右の下スライダ１２３の前部に対し上下方向回転可能に支持される。そして、左右の第３リンク２３の前端部は、左右の第１リンク２１の後方延設部２１２の前端部に対し上下方向回転可能に支持される。なお、第３リンク２３の各部の寸法及び連結部位の位置は、座席１が立ち座り状態Ｘ１にあるときに、第３リンク２３と第１リンク２１の後方延設部２１２とで後側の開いた略Ｖ字形状をなす姿勢を採り、座席１が着座状態Ｘ２にあるときに、第３リンク２３と第１リンク２１の前方延設部２１１とで略直線形状をなす姿勢を採り、立ち座り状態Ｘ１と着座状態Ｘ２との間においては、上記２姿勢の間で後述する第４シャフトＳ４を中心に下スライダ１２３に対して上下方向に回転可能なものとなっている。第３リンク２３と下スライダ１２３とが、リンク回転機構６０を構成している。 As shown in FIGS. 2 to 5, the third link 23 is a pair of left and right metal link plates disposed so that the thickness direction thereof coincides with the left and right direction. It is formed in a substantially linear shape extending in an inclined manner. The rear end portions of the left and right third links 23 are supported to be rotatable in the vertical direction with respect to the front portions of the left and right lower sliders 123, respectively. The front end portions of the left and right third links 23 are supported so as to be vertically rotatable with respect to the front end portions of the rearward extending portions 212 of the left and right first links 21. Note that the dimensions of each part of the third link 23 and the position of the connecting portion are such that when the seat 1 is in the standing and sitting state X1, the third link 23 and the rear extension part 212 of the first link 21 open rearward. When the seat 1 is in the seating state X2, the third link 23 and the front extending portion 211 of the first link 21 take a posture that is substantially linear, and stand and sit. Between the state X1 and the seating state X2, it can rotate up and down with respect to the lower slider 123 around a fourth shaft S4 described later between the two postures. The third link 23 and the lower slider 123 constitute a link rotation mechanism 60.

図２〜図５に示すように、第４リンク２４は、厚さ方向が左右方向と一致するように配設された左右一対の金属製のリンクプレートであり、立ち座り状態Ｘ１において前下方に急勾配で傾斜して延びる略直線形状に形成されている。第４リンク２４の立ち座り状態Ｘ１における後端部より若干前側には、後下方に延びる突部２４Ａが形成されている。左右の第４リンク２４の後端部は、それぞれ、左右の第１リンク２１の前方延設部２１１の前端部に対し上下方向回転可能に支持される。左右の第４リンク２４の前側部前上面には、後に詳述するクッション体５０が配設される。 As shown in FIGS. 2 to 5, the fourth link 24 is a pair of left and right metal link plates arranged so that the thickness direction coincides with the left and right direction. It is formed in a substantially linear shape that extends with a steep slope. A protrusion 24A extending rearward and downward is formed slightly forward of the rear end portion of the fourth link 24 in the standing and sitting state X1. The rear end portions of the left and right fourth links 24 are supported so as to be rotatable in the vertical direction with respect to the front end portions of the front extending portions 211 of the left and right first links 21. A cushion body 50, which will be described in detail later, is disposed on the front upper surface of the front side portion of the left and right fourth links 24.

図２〜図５に示すように第５リンク２５は、厚さ方向が左右方向と一致するように配設された左右一対の金属製のリンクプレートであり、立ち座り状態Ｘ１において前下方に傾斜して延びる略直線形状に形成されている。左右の第５リンク２５の後端部は、それぞれ、左右の第３リンク２３の延設方向中央部に対し上下方向回転可能に支持される。第６リンク２６は、厚さ方向が左右方向と一致するように配設された左右一対の金属製のリンクプレートであり、立ち座り状態Ｘ１において前上方に傾斜して延びる略直線形状に形成されている。左右の第６リンク２６の前端部は、それぞれ、左右の第４リンク２４の突部２４Ａに対し上下方向回転可能に支持される。そして、左右の第６リンク２６の後端部は、それぞれ、左右の第５リンク２５の前端部に対し上下方向回転可能に支持される。なお、第５リンク２５及び第６リンク２６の各部の寸法及び連結部位の位置は、座席１が立ち座り状態Ｘ１にあるときに、第５リンク２５と第６リンク２６とが左右側面視で略Ｖ字状をなす姿勢を採り、座席１が着座状態Ｘ２にあるときに、第５リンク２５と第６リンク２６とが互いの連結部位がわずかに下方へ張り出すように屈曲した略直線状をなす姿勢を採り、立ち座り状態Ｘ１と着座状態Ｘ２との間においては、第３ピンＰ３がガイド長孔２１３Ａに沿って上下に摺動することにより上記２姿勢の間で回転可能なものとなっている。 As shown in FIGS. 2 to 5, the fifth link 25 is a pair of left and right metal link plates arranged so that the thickness direction coincides with the left and right direction, and is inclined forward and downward in the standing and sitting state X1. It is formed in the substantially linear shape extended. The rear end portions of the left and right fifth links 25 are supported so as to be rotatable in the vertical direction with respect to the center portion in the extending direction of the left and right third links 23. The sixth link 26 is a pair of left and right metal link plates arranged so that the thickness direction thereof coincides with the left and right direction, and is formed in a substantially linear shape that inclines forward and upward in the standing and sitting state X1. ing. The front end portions of the left and right sixth links 26 are supported so as to be rotatable in the vertical direction with respect to the protrusions 24A of the left and right fourth links 24, respectively. The rear end portions of the left and right sixth links 26 are supported so as to be vertically rotatable with respect to the front end portions of the left and right fifth links 25. Note that the dimensions of the respective parts of the fifth link 25 and the sixth link 26 and the positions of the connecting portions are substantially the same as the fifth link 25 and the sixth link 26 in the left and right side view when the seat 1 is in the standing and sitting state X1. When the seat 1 is in the seating state X2, the fifth link 25 and the sixth link 26 are bent in a substantially straight shape so that the connecting portions slightly protrude downward. In the standing position X1 and the sitting state X2, the third pin P3 slides up and down along the guide long hole 213A and can rotate between the two positions. ing.

図２又は図５に示すように、背凭れ部３０は、着座者の背部を支持可能な部材であり、略面状に形成されている。背凭れ部３０は、略面状の硬質な基材を発泡ウレタンパッドで覆いその上からファブリック又は皮革で覆った構成とされている。背凭れ部３０は、立ち座り状態Ｘ１においてポール部材１１と略平行に延びており、この前側の面が背凭れ面となっている。背凭れ部３０の基材の左右両側には、第２リンク２２が一体的に取付けられている。 As shown in FIG. 2 or 5, the backrest 30 is a member that can support the back of the seated person, and is formed in a substantially planar shape. The backrest 30 is configured such that a substantially planar hard substrate is covered with a foamed urethane pad and then covered with fabric or leather. The backrest portion 30 extends substantially parallel to the pole member 11 in the standing and sitting state X1, and the front surface is a backrest surface. The second links 22 are integrally attached to the left and right sides of the base material of the backrest 30.

図２又は図５に示すように、座部４０は、着座者の臀部を支持可能な部材であり、略矩形状に形成されている。座部４０は、略矩形状の基材を発泡ウレタンパッドで覆いその上からファブリック又は皮革で覆った構成とされている。座部４０は、立ち座り状態Ｘ１において前下方に傾斜して配設されており、この前上側の面が臀部支持面となっている。座部４０は、上記基材の下部四隅から下方に突出しているブラケットと第１リンク２１の前方延設部２１１とが図示しない締結ボルトにより締結されることで、第１リンク２１に取付けられている。 As shown in FIG. 2 or 5, the seat portion 40 is a member that can support a seated person's buttocks, and is formed in a substantially rectangular shape. The seat portion 40 is configured such that a substantially rectangular base material is covered with a foamed urethane pad and then covered with fabric or leather. The seat portion 40 is disposed so as to be inclined forward and downward in the standing and sitting state X1, and the front upper surface serves as a buttocks support surface. The seat portion 40 is attached to the first link 21 by fastening a bracket projecting downward from the lower four corners of the base material and a front extending portion 211 of the first link 21 with a fastening bolt (not shown). Yes.

図２〜図５に示すように、クッション体５０は、略矩形状の基材を発泡ウレタンパッドで覆いその上からファブリック又は皮革で覆った構成とされている。クッション体５０は、立ち座り状態Ｘ１において前下方に急勾配で傾斜しており、座部４０より低い高さ位置に配設されている。クッション体５０の基材には、脚部５３が取付けられている。脚部５３は、立ち座り状態Ｘ１においてクッション体５０から後下方に傾斜して延びる左右一対の縦棒部と、縦棒部の下端部同士を連結するように左右に延びる横棒部と、を備えたＵ字形のパイプ部材から構成されている。クッション体５０は、上記基部の左右両側と第４リンク２４の前側部前上面とが固着されることで、第４リンク２４に取付けられている。クッション体５０は、着座状態Ｘ２において座部４０の前端部に接続して着座者の身体を支持可能な面積を前方に延長するための部材である。なお、クッション体５０の各部の寸法及び連結部位の位置は、座席１が立ち座り状態Ｘ１にあるときに、脚部５３が後下方に延びて第１リンク２１の下方延設部２１３の間に収容された姿勢を採り、座席１が着座状態Ｘ２にあるときに、脚部５３が前下方に延びてその下端部をフロアＦに当接させた状態でクッション体５０の脚部５３とは反対側の面である平面部５０Ａが水平より前端部をわずかに上方に位置させた姿勢を採り、立ち座り状態Ｘ１と着座状態Ｘ２との間においては、上記２姿勢の間で後述する第１ピンＰ１を中心に上下回転可能なものとなっている。 As shown in FIGS. 2 to 5, the cushion body 50 is configured such that a substantially rectangular base material is covered with a foamed urethane pad and then covered with fabric or leather. The cushion body 50 is steeply inclined forward and downward in the standing and sitting state X 1 and is disposed at a height position lower than the seat portion 40. Legs 53 are attached to the base material of the cushion body 50. The leg 53 includes a pair of left and right vertical bars extending in a rearward and downward direction from the cushion body 50 in the standing and sitting state X1, and a horizontal bar extending left and right so as to connect the lower ends of the vertical bars. It comprises a U-shaped pipe member provided. The cushion body 50 is attached to the fourth link 24 by fixing the left and right sides of the base portion and the front upper surface of the front side portion of the fourth link 24. The cushion body 50 is a member for connecting to the front end portion of the seat portion 40 in the sitting state X2 and extending an area capable of supporting the seated person's body forward. In addition, the dimension of each part of the cushion body 50 and the position of the connecting portion are such that when the seat 1 is in the standing and sitting state X1, the leg portion 53 extends rearward and downward, and between the downward extending portion 213 of the first link 21. When the seat 1 is in the seated state X2 in the accommodated posture, the leg 53 extends forward and downward, and the lower end thereof is in contact with the floor F, opposite to the leg 53 of the cushion body 50. The flat surface portion 50A, which is the side surface, takes a posture in which the front end portion is positioned slightly above the horizontal, and the first pin described later between the two postures between the standing and sitting states X1 and X2 It can rotate up and down around P1.

図２〜図５に示すように、駆動機構１３は、左右方向に延びて左右のポール部材１１同士を連結する固定連結板１３１と、左右方向に延びて左右の上スライダ１２１同士を連結する可動連結板１３２と、固定連結板１３１の上面部に固定されたねじ送り装置１３３と、ねじ送り装置１３３に装着された雄ねじ部材１３４と、ねじ送り装置１３３に駆動力を伝達するモータ１３６と、を備えている。固定連結板１３１は、その厚み方向がポール部材１１の延びる方向と一致しており、着座状態Ｘ２において上スライダ１２１の下端部が当接する高さ位置に配設されている。可動連結板１３２は、その厚み方向がポール部材１１の延びる方向と一致しており、固定連結板１３１と平行に配設されている。ねじ送り装置１３３は、固定連結板１３１の厚み方向に延びる装着孔を備えており、モータ１３６から伝達された駆動力を上記装着孔に装着された雄ねじ部材１３４をねじ送り回転させるための回転力に変換することのできる構成となっている。雄ねじ部材１３４は、固定連結板１３１及び可動連結板１３２を貫通して延びており、その上端部が可動連結板１３２の左右方向中央部位に回転可能な状態で上下方向に固定されている。モータ１３６は、直流モータであり、減速機１３５を介してねじ送り装置１３３に駆動力を伝達させられるように連結している。 As shown in FIGS. 2 to 5, the drive mechanism 13 includes a fixed connecting plate 131 that extends in the left-right direction and connects the left and right pole members 11, and a movable that extends in the left-right direction and connects the left and right upper sliders 121. A connecting plate 132; a screw feeding device 133 fixed to the upper surface portion of the fixed connecting plate 131; a male screw member 134 attached to the screw feeding device 133; and a motor 136 that transmits a driving force to the screw feeding device 133. I have. The fixed connecting plate 131 has a thickness direction coinciding with a direction in which the pole member 11 extends, and is disposed at a height position where the lower end portion of the upper slider 121 abuts in the seating state X2. The movable connecting plate 132 has a thickness direction that coincides with the extending direction of the pole member 11, and is disposed in parallel with the fixed connecting plate 131. The screw feeding device 133 includes a mounting hole extending in the thickness direction of the fixed connecting plate 131, and a rotational force for rotating the male screw member 134 mounted in the mounting hole with a driving force transmitted from the motor 136. It becomes the structure which can be converted into. The male screw member 134 extends through the fixed connecting plate 131 and the movable connecting plate 132, and an upper end portion thereof is fixed in the vertical direction in a state where it can rotate to a central portion in the left and right direction of the movable connecting plate 132. The motor 136 is a direct current motor and is connected to the screw feeding device 133 via the speed reducer 135 so that the driving force can be transmitted.

図２及び図５に基づいて、座席１を構成する各部材の連結構造について説明する。座席１を構成する各部材は、左右方向に延びて左右一対の構成部材間を架橋する複数のシャフトＳ、又は、左右一対の構成部材を左右別々に連結する複数のピンＰによって連結される。なお、図５では、図を見易くするためにピンＰを省略して図示している。 Based on FIG.2 and FIG.5, the connection structure of each member which comprises the seat 1 is demonstrated. Each member constituting the seat 1 is connected by a plurality of shafts S that extend in the left-right direction and bridge between the pair of left and right components, or a plurality of pins P that connect the pair of left and right components separately. In FIG. 5, the pin P is omitted to make the drawing easier to see.

すなわち、左右の第２リンク２２の上突部２２Ａと、左右の上スライダ１２１の前部と、は、第１シャフトＳ１によって上下方向回転可能に連結される。そして、左右の第１リンク２１の後方延設部２１２の後端部と、左右の中スライダ１２２の前部と、は、第２シャフトＳ２によって上下方向回転可能に連結される。そして、左右の第２リンク２２の下突部２２Ｂと、左右の第１リンク２１の後方延設部２１２の前端部と、左右の第３リンク２３の前端部と、は、座席１の幅方向外側から内側に向かってこの順に重ね合わされた状態で、第３シャフトＳ３によって上下方向回転可能に連結される。そして、左右の第３リンク２３の後端部と、左右の下スライダ１２３の前部と、は、第４シャフトＳ４によって上下方向回転可能に連結される。 That is, the upper projecting portions 22A of the left and right second links 22 and the front portions of the left and right upper sliders 121 are connected by the first shaft S1 so as to be vertically rotatable. The rear end portions 212 of the left and right first links 21 and the front portions of the left and right middle sliders 122 are connected by the second shaft S2 so as to be rotatable in the vertical direction. The lower protrusions 22B of the left and right second links 22, the front end portions of the rearward extending portions 212 of the left and right first links 21, and the front end portions of the left and right third links 23 are in the width direction of the seat 1. In a state of being overlapped in this order from the outside to the inside, the third shaft S3 is connected to be rotatable in the vertical direction. The rear end portions of the left and right third links 23 and the front portions of the left and right lower sliders 123 are connected to each other by a fourth shaft S4 so as to be rotatable in the vertical direction.

一方、左右の第４リンク２４の後端部と、左右の第１リンク２１の前方延設部２１１の前端部と、は、座席１の幅方向外側から内側に向かってこの順に重ね合わされた状態で、第１ピンＰ１によってそれぞれ回転可能に連結される。そして、左右の第５リンク２５の後端部と、左右の第３リンク２３の延設方向中央部と、は、座席１の幅方向外側から内側に向かってこの順に重ね合わされた状態で、第２ピンＰ２によってそれぞれ上下方向回転可能に連結される。そして、左右の第６リンク２６の後端部と、左右の第５リンク２５の前端部と、は、座席１の幅方向外側から内側に向かってこの順に重ね合わされた状態で、第３ピンＰ３によってそれぞれ上下方向回転可能に連結される。そして、左右の第６リンク２６の前端部と、左右の第４リンク２４の突部２４Ａと、は、座席１の幅方向外側から内側に向かってこの順に重ね合わされた状態で、第４ピンＰ４によってそれぞれ上下方向回転可能に連結される。なお、第３ピンＰ３は、第１リンク２１のガイド長孔２１３Ａに挿入された状態で抜け止めされる。第３ピンＰ３が、特許請求の範囲の「ピン部材」に相当する。 On the other hand, the rear end portions of the left and right fourth links 24 and the front end portions of the front extending portions 211 of the left and right first links 21 are overlapped in this order from the outside in the width direction of the seat 1 to the inside. Thus, the first pins P1 are rotatably connected to each other. The rear end portions of the left and right fifth links 25 and the center portion in the extending direction of the left and right third links 23 are overlapped in this order from the outside in the width direction of the seat 1 to the inside. The two pins P2 are connected so as to be vertically rotatable. The rear end portions of the left and right sixth links 26 and the front end portions of the left and right fifth links 25 are overlapped in this order from the outer side in the width direction of the seat 1 to the inner side in this order. Are connected so as to be vertically rotatable. The front end portions of the left and right sixth links 26 and the protrusions 24A of the left and right fourth links 24 are overlapped in this order from the outer side in the width direction of the seat 1 to the inner side in this order. Are connected so as to be vertically rotatable. Note that the third pin P3 is prevented from coming off while being inserted into the guide long hole 213A of the first link 21. The third pin P3 corresponds to a “pin member” in the claims.

図１〜図４に基づいて、座席１の動作について説明する。座席１が立ち座り状態Ｘ１にあるとき、左右の第１リンク２１が前下方に向けて傾斜して延びた状態となる。これにより、左右の第１リンク２１の前方延設部２１１の前端部上側に固定された座部４０が、臀部支持面を前下方に傾斜させた姿勢となる。このため、着座者は、図１の実線に示すような略立ち姿勢で座部４０の臀部支持面に臀部を支持させることができるため、座席１に略立ち姿勢で着座できる。このとき、クッション体５０の脚部５３が左右の第１リンク２１の下方延設部２１３の間の空間に収容され、クッション体５０の平面部５０Ａが座部４０の臀部支持面より急勾配で前下方に傾斜して延びた状態となる。 The operation of the seat 1 will be described with reference to FIGS. When the seat 1 is in the standing / sitting state X1, the left and right first links 21 are inclined and extended toward the front lower side. Thereby, the seat part 40 fixed to the front end part upper side of the front extension part 211 of the left and right first links 21 assumes a posture in which the buttock support surface is inclined forward and downward. For this reason, since the seated person can support the buttocks on the buttocks support surface of the seat 40 in a substantially standing posture as shown by the solid line in FIG. At this time, the leg portion 53 of the cushion body 50 is accommodated in the space between the downwardly extending portions 213 of the left and right first links 21, and the flat surface portion 50 A of the cushion body 50 is steeper than the buttocks support surface of the seat portion 40. It will be in the state extended inclining to the front lower direction.

座席１が立ち座り状態Ｘ１にあるときに、駆動機構１３のモータ１３６を動作させて螺合作用により雄ねじ部材１３３を下方移動させると、可動連結板１３２が下方移動して固定連結板１３１に接近していく。これによって、左右の上スライダ１２１が下方移動すると同時に、左右の中スライダ１２２及び下スライダ１２３が下方に従動していく。なお、上スライダ１２１、中スライダ１２２及び下スライダ１２３の相対的な位置関係は、下スライダ１２３が図２示すようなストッパ１８に当接しない高さ位置から図３に示すようなストッパ１８に当接した瞬間の高さ位置までの範囲で移動する場合には、図２に示す位置関係のまま保持される。すなわち、上記範囲では、座席１を立ち座り状態Ｘ１に保持したまま、背凭れ部３０及び座部４０を下方移動させることができる。よって、標準的な体格より小柄な着座者であっても、上記範囲内であれば座部４０の高さ位置を調整して略立ち姿勢で座席１に着座することができる。 When the seat 1 is in the standing state X1, when the motor 136 of the drive mechanism 13 is operated and the male screw member 133 is moved downward by screwing action, the movable connecting plate 132 moves downward and approaches the fixed connecting plate 131. I will do it. As a result, the left and right upper sliders 121 move downward, and at the same time, the left and right middle sliders 122 and the lower slider 123 follow. The relative positional relationship among the upper slider 121, the middle slider 122, and the lower slider 123 is such that the lower slider 123 contacts the stopper 18 as shown in FIG. 3 from a height position where the lower slider 123 does not contact the stopper 18 as shown in FIG. When moving in the range up to the height position at the moment of contact, the positional relationship shown in FIG. 2 is maintained. That is, in the range described above, the backrest 30 and the seat 40 can be moved downward while the seat 1 is held in the standing position X1. Therefore, even a seated person who is smaller than the standard physique can be seated on the seat 1 in a substantially standing posture by adjusting the height position of the seat 40 within the above range.

モータ１３６を動作させて左右の上スライダ１２１を下方移動させていくと、やがて、下スライダ１２３がストッパ１８に当接し、下スライダ１２３の下方移動が禁止された状態となる。この状態からさらに左右の上スライダ１２１を下方移動させると、左右の中スライダ１２２と下スライダ１２３とが相対的に接近していく。このため、左右の中スライダ１２２に後端部を支持されている第１リンク２１と、左右の下スライダ１２３に後端部支持されている第３リンク２３と、が第３シャフトＳ３を前方に押し出すようにそれぞれ回転していき、座部４０が第３シャフトＳ３を中心に上方回転していく。これと同時に、第１として、第２リンク２２の下突部２２Ｂが第３シャフトＳ３によって第１リンク２１に連結されているため、背凭れ部３０の下端部が前方移動していき、背凭れ部３０の背凭れ面が後傾していく。さらに、第２として、第１リンク２１の回転にともなって、第１リンク２１の下方延設部２１３が第３ピンＰ３を前上方に押圧してガイド長孔２１３Ａに沿って相対的に上方移動させるため、第５リンク２５及び第６リンク２６が伸び、第４リンク２４が第１ピンＰ１を中心に上方に回転する。そして、図４に示すように、左右の上スライダ１２１が固定連結板１３１に当接すると、座部４０の臀部支持面が前上方へ傾斜して延びるとともに、クッション体５０の平面部５０Ａが座部４０の臀部支持面と連続して前上方へ傾斜して延びた状態となる。このため、着座者は、略立ち姿勢から腰を低く落とした図１の二点鎖線に示すような通常の着座姿勢で座部４０の臀部支持面に臀部を支持させることができる。すなわち、座席１が、通常の着座姿勢で着座可能な着座状態Ｘ２となる。なお、座席１が着座状態Ｘ２にあるとき、座部４０の下方延設部２１３の下端部と、クッション体５０の脚部５３と、が、フロアＦに当接して立設した状態となる。 When the motor 136 is operated to move the left and right upper sliders 121 downward, the lower slider 123 comes into contact with the stopper 18 and the lower slider 123 is prohibited from moving downward. When the left and right upper sliders 121 are further moved downward from this state, the left and right middle sliders 122 and the lower slider 123 relatively approach each other. For this reason, the first link 21 whose rear end is supported by the left and right middle sliders 122 and the third link 23 supported by the left and right lower sliders 123 have the third link S3 forward. Each of the seats 40 is rotated so as to be pushed out, and the seat 40 is rotated upward about the third shaft S3. At the same time, as the first, since the lower protrusion 22B of the second link 22 is connected to the first link 21 by the third shaft S3, the lower end of the backrest 30 moves forward, and the backrest The backrest surface of the part 30 tilts backward. Further, secondly, as the first link 21 rotates, the downward extending portion 213 of the first link 21 presses the third pin P3 forward and upward to move relatively upward along the guide slot 213A. Therefore, the fifth link 25 and the sixth link 26 extend, and the fourth link 24 rotates upward about the first pin P1. As shown in FIG. 4, when the left and right upper sliders 121 come into contact with the fixed connecting plate 131, the flange support surface of the seat portion 40 extends obliquely forward and upward, and the flat portion 50 A of the cushion body 50 is seated. It will be in the state extended inclining to the front upper direction continuously with the collar support surface of the part 40. For this reason, the seated person can support the buttocks on the buttocks support surface of the seat 40 in a normal sitting position as shown by a two-dot chain line in FIG. That is, the seat 1 is in the seating state X2 in which the seat 1 can be seated in a normal seating posture. When the seat 1 is in the seating state X2, the lower end portion of the downwardly extending portion 213 of the seat portion 40 and the leg portion 53 of the cushion body 50 are in a state of standing up against the floor F.

座席１が着座状態Ｘ２にあるときに、モータ１３６を逆回転に動作させて螺合作用により雄ねじ部材１３４を上方移動させると、可動連結板１３２が上方移動して固定連結板１３１から離れていく。これにより、左右の上スライダ１２１が上方移動するため、第２リンク２２と第１リンク２１の後方延設部２１２とを介して、左右の中スライダ１２２が上方に引き上げられる。左右の中スライダ１２２が上方に引き上げられていくと、中スライダ１２２と下スライダ１２３との相対距離が離れていく。このため、第１リンク２１と第３リンク２３とが第３シャフトＳ３を後方に引き戻すようにそれぞれ回転して、座部４０が前下がりに傾斜していく。これと同時に、第１として、背凭れ部３０の下端部が後側に移動し、背凭れ面の後傾が元に戻る。そして、第２として、ガイド長孔２１３Ａに沿って相対的に第３ピンＰ３が下方移動させられ、第５リンク２５と第６リンク２６とが屈曲していく。そして、図２に示すように、下スライダ１２３がストッパ１８から離れると、座席１は元の状態に戻る。 When the seat 1 is in the seating state X2, when the motor 136 is operated in the reverse rotation and the male screw member 134 is moved upward by the screwing action, the movable connecting plate 132 is moved upward and away from the fixed connecting plate 131. . As a result, the left and right upper sliders 121 move upward, so that the left and right middle sliders 122 are pulled upward via the second link 22 and the rearward extending portion 212 of the first link 21. As the left and right middle sliders 122 are pulled upward, the relative distance between the middle slider 122 and the lower slider 123 increases. Therefore, the first link 21 and the third link 23 rotate so as to pull the third shaft S3 backward, and the seat portion 40 is inclined forwardly downward. At the same time, firstly, the lower end portion of the backrest 30 moves rearward, and the backward tilt of the backrest surface returns. Secondly, the third pin P3 is relatively moved downward along the guide long hole 213A, and the fifth link 25 and the sixth link 26 are bent. As shown in FIG. 2, when the lower slider 123 moves away from the stopper 18, the seat 1 returns to the original state.

以上のように構成される本実施形態は、以下のような作用効果を奏する。第１リンク２１は、後端部が、中スライダ１２２に上下方向回転可能に支持されており、前端部に、座部４０が配設された構成となっている。この座部４０は、座席１が立ち座り状態Ｘ１にあるとき前下方に傾斜している。このため、座部４０の臀部支持面の傾斜が、略立ち姿勢の着座者の臀部から大腿部にかけての身体形状に対応したものとなり、座部４０により略立ち姿勢の着座者の臀部を支持することが可能となる。この状態から、中スライダ１２２を下降させると、下スライダ１２３の下降がストッパ１８に当接して禁止され、中スライダ１２２と下スライダ１２３との相対距離が縮まる。このため、第１リンク２１の後端部と第３リンク２３の後端部とが接近して第３シャフトＳ３を前側に押し出すように回転動作することになる。よって、第１リンク２１は、中スライダ１２２に対して上方に回転することになる。これにより、座部４０が前上がりに傾斜する。このため、座部４０の臀部支持面は、左右の下スライダ１２３及び第３リンク２３という簡便な構成のリンク回転機構６０の働きによって通常着座姿勢の着座者の臀部から大腿部にかけての身体形状に対応したものとなり、座部４０により通常の着座姿勢の着座者の臀部を支持することが可能となる。 The present embodiment configured as described above has the following operational effects. The first link 21 has a rear end supported by the middle slider 122 so as to be rotatable in the vertical direction, and a seat 40 is disposed at the front end. The seat portion 40 is inclined forward and downward when the seat 1 is in the standing and sitting state X1. For this reason, the inclination of the buttocks support surface of the seat portion 40 corresponds to the body shape from the buttocks of the seated person in the substantially standing posture to the thigh, and the seat portion 40 supports the buttocks of the seated person in the substantially standing posture. It becomes possible to do. When the middle slider 122 is lowered from this state, the lower slider 123 is prevented from descending against the stopper 18 and the relative distance between the middle slider 122 and the lower slider 123 is reduced. For this reason, the rear end portion of the first link 21 and the rear end portion of the third link 23 approach each other and rotate so as to push the third shaft S3 forward. Therefore, the first link 21 rotates upward with respect to the middle slider 122. Thereby, the seat part 40 inclines forward. For this reason, the buttocks support surface of the seat 40 has a body shape extending from the buttocks to the thigh of the seated person in the normal sitting posture by the action of the link rotating mechanism 60 having a simple configuration of the left and right lower sliders 123 and the third links 23. Therefore, the seat 40 can support the buttocks of a seated person in a normal sitting posture.

さらに、前側に背凭れ部３０が配設されている第２リンク２２は、上端部側が、上スライダ１２１に上下方向回転可能に支持されており、下端部側が、立ち座り状態Ｘ１において中スライダ１２２と座部４０との間かつ中スライダ１２２の高さ位置と下スライダ１２３の高さ位置との間で第１リンク２１に対し上下方向回転可能に支持されている。このため、中スライダ１２２が下降して第１リンク２１が中スライダ１２２に対して上方に回転すると、背凭れ部３０の下端部が前方に移動させられることになる。よって、中スライダ１２２を下降させることで、自動的に背凭れ部３０の背凭れ面を後方に倒すことができるため、着座者が上体を若干後傾させて着座した快適な着座姿勢を採ることができる。 Further, the second link 22 in which the backrest portion 30 is disposed on the front side is supported by the upper slider 121 so as to be capable of rotating in the vertical direction on the upper end side, and the lower slider side is supported on the middle slider 122 in the standing and sitting state X1. And the seat portion 40 and between the height position of the middle slider 122 and the height position of the lower slider 123, the first link 21 is supported so as to be vertically rotatable. For this reason, when the middle slider 122 descends and the first link 21 rotates upward with respect to the middle slider 122, the lower end of the backrest 30 is moved forward. Therefore, by lowering the middle slider 122, the backrest surface of the backrest 30 can be automatically tilted backward, so that the seated person takes a comfortable seating posture in which the upper body is slightly tilted backward. be able to.

さらに、座席１が立ち座り状態Ｘ１にあるとき、クッション体５０は座部４０より低い高さ位置に位置される。そして、中スライダ１２２が下降したとき、第４リンク２４が第１リンク２１の前端部側に対して上方に回転するため、クッション体５０が座部４０に対して相対的に前上がりに傾斜する。このため、座席１が立ち座り状態Ｘ１にあるときは着座者の臀部のみを支持して大腿部は支持せず、座席が着座状態Ｘ２にあるときは着座者の臀部と大腿部とを支持することができる。このため、立ち座り状態、及び、着座状態の両方における座席１の座り心地向上を図ることができる。 Further, when the seat 1 is in the standing / sitting state X 1, the cushion body 50 is positioned at a lower position than the seat portion 40. When the middle slider 122 is lowered, the fourth link 24 rotates upward with respect to the front end portion side of the first link 21, so that the cushion body 50 is inclined relatively upward relative to the seat portion 40. . For this reason, when the seat 1 is in the standing position X1, only the seated person's buttocks are supported and the thigh is not supported, and when the seat is in the seated state X2, the seated person's buttocks and thighs are supported. Can be supported. For this reason, the sitting comfort of the seat 1 in both the standing and sitting state and the sitting state can be improved.

さらに、座席１が着座状態Ｘ２にあるとき、座部４０とフロアＦとの間で下方延設部２１３が立設する構成となっている。このため、標準着座姿勢で座席１に着座している着座者の体重を、下方延設部２１３を介して、フロアＦに対ししっかり支持することができる。また、座席１が着座状態Ｘ２にあるとき、クッション体５０の脚部５３が、クッション体５０とフロアＦとの間で立設する構成となっている。このため、クッション体５０に印加される着座者の体重も、脚部５３を介して、フロアＦに対ししっかり支持することができる。 Furthermore, when the seat 1 is in the seating state X2, the downward extending portion 213 is erected between the seat portion 40 and the floor F. For this reason, the weight of the seated person who is seated on the seat 1 in the standard seating posture can be firmly supported with respect to the floor F via the downward extending portion 213. Further, when the seat 1 is in the seating state X2, the leg portion 53 of the cushion body 50 is configured to stand between the cushion body 50 and the floor F. For this reason, the weight of the seated person applied to the cushion body 50 can also be firmly supported with respect to the floor F via the leg portion 53.

以上、特定の実施形態について説明したが、本発明は、それらの外観、構成に限定されず、本発明の要旨を変更しない範囲で種々の変更、追加、削除が可能である。例えば、次のようなものが挙げられる。 As mentioned above, although specific embodiment was described, this invention is not limited to those external appearances and structures, A various change, addition, and deletion are possible in the range which does not change the summary of this invention. For example, the following can be mentioned.

１．上記実施形態においては、ポール部材１１は、車両ＣのフロアＦ及び天井部に固定されている構成とした。しかし、これに限定されず、例えば、ポール部材１１が車両Ｃの壁面に固定されている構成であってもよい。 1. In the above embodiment, the pole member 11 is fixed to the floor F and the ceiling of the vehicle C. However, it is not limited to this, For example, the structure by which the pole member 11 is being fixed to the wall surface of the vehicle C may be sufficient.

２．上記実施形態においては、第２リンク２２の上突部２２Ａが上スライダ１２１の前部に対し上下方向回転可能に支持され、かつ、下突部２２Ｂが第１リンク２１の後方延設部２１２の前端部に対し上下方向回転可能に支持された構成とした。しかし、これに限定されない。すなわち、例えば、下突部２２Ｂが中スライダ１２２の前部に対し上下方向回転可能に支持された構成であってもよい。他にも、上突部２２Ａが上スライダ１２１の前部に対し上下方向回転不能に連結され、かつ、下突部２２Ｂが中スライダ１２２の前部に対し上下方向回転不能に連結された構成であってもよい。これらの構成では、上スライダ１２１を下方移動させても背凭れ部３０の背凭れ面の傾斜角度は一定に保持されるが、座部４０は上記実施形態と同様に前上がりに傾斜する。 2. In the above-described embodiment, the upper protrusion 22A of the second link 22 is supported so as to be vertically rotatable with respect to the front portion of the upper slider 121, and the lower protrusion 22B of the rear extension portion 212 of the first link 21 is supported. It was set as the structure supported so that the up-down direction could rotate with respect to the front-end part. However, it is not limited to this. That is, for example, the lower protrusion 22 B may be supported to be rotatable in the vertical direction with respect to the front portion of the middle slider 122. In addition, the upper protrusion 22A is connected to the front portion of the upper slider 121 so as not to be able to rotate in the vertical direction, and the lower protrusion 22B is connected to the front portion of the middle slider 122 so as not to be able to rotate in the vertical direction. There may be. In these configurations, even if the upper slider 121 is moved downward, the inclination angle of the backrest surface of the backrest portion 30 is kept constant, but the seat portion 40 is inclined forward as in the above embodiment.

３．上記実施形態においては、特に言及しなかったが、座席１の各構成部材間の連結部位に、座席１の動作を補助する付勢力を印加するトーションばね等の補助部材を取付けることもできる。例えば、第３シャフトＳ３にトーションばねを取付けることもできる。かかる構成では、第３シャフトＳ３が常に第２シャフトＳ２と第４シャフトＳ４とを結んだラインより前側に位置するように、第１リンク２１と第３リンク２３とを付勢することもできる。 3. Although not particularly mentioned in the above embodiment, an auxiliary member such as a torsion spring for applying a biasing force for assisting the operation of the seat 1 can be attached to a connecting portion between the constituent members of the seat 1. For example, a torsion spring can be attached to the third shaft S3. In such a configuration, the first link 21 and the third link 23 can be urged so that the third shaft S3 is always positioned in front of the line connecting the second shaft S2 and the fourth shaft S4.

４．上記実施形態においては、クッション体５０を設けたが、クッション体５０の無い構成であってもよい。かかる構成では、例えば、第１リンク２１の下方延設部２１３、第４リンク２４、第５リンク２５、第６リンク２６及びクッション体５０等を省略することもできる。 4). In the above embodiment, the cushion body 50 is provided, but a configuration without the cushion body 50 may be used. In such a configuration, for example, the downwardly extending portion 213, the fourth link 24, the fifth link 25, the sixth link 26, the cushion body 50, and the like of the first link 21 can be omitted.

５．上記実施形態においては、駆動機構１３が上スライダ１２１に連結しており、上スライダ１２１を上下移動させることで、中スライダ１２２及び下スライダ１２３を上下に従動させる構成とした。しかし、これに限定されず、例えば、駆動機構１３が中スライダ１２２に連結しており、中スライダ１２２を上下移動させることで、上スライダ１２１及び下スライダ１２３を上下に従動させる構成にすることもできる。 5. In the above embodiment, the drive mechanism 13 is connected to the upper slider 121, and the upper slider 121 is moved up and down to move the middle slider 122 and the lower slider 123 up and down. However, the present invention is not limited to this. For example, the drive mechanism 13 is connected to the middle slider 122, and the upper slider 121 and the lower slider 123 can be moved up and down by moving the middle slider 122 up and down. it can.

６．上記実施形態においては、ポール部材１１に上スライダ１２１、中スライダ１２２及び下スライダ１２３が組付けられており、これらのスライダを介して背凭れ部３０や座部４０が取付けられる構成とした。しかし、これに限定されず、例えば、ポール部材１１の代わりに、車両Ｃに固定される固定側レール部材を備え、上スライダ１２１、中スライダ１２２及び下スライダ１２３の代わりに、固定側レール部材に対して摺動可能に嵌合した可動側レール部材を上中下の３種類備えた構成であってもよい。すなわち、背凭れ部３０や座部４０が、可動側レール部材を介して固定側レール部材に取付けられている構成であってもよい。 6). In the above embodiment, the upper slider 121, the middle slider 122, and the lower slider 123 are assembled to the pole member 11, and the backrest portion 30 and the seat portion 40 are attached via these sliders. However, the present invention is not limited to this. For example, a fixed-side rail member fixed to the vehicle C is provided instead of the pole member 11, and the fixed-side rail member is used instead of the upper slider 121, the middle slider 122, and the lower slider 123. The structure provided with three types of movable side rail members which were slidably fitted to the upper, middle and lower sides may be used. In other words, the backrest 30 and the seat 40 may be attached to the fixed rail member via the movable rail member.

７．上記実施形態においては、本発明を小型車両である車両Ｃの座席に適用したが、普通自動車、飛行機、船、電車等に搭載される座席に適用してもよい。 7). In the above embodiment, the present invention is applied to the seat of the vehicle C, which is a small vehicle. However, the present invention may be applied to a seat mounted on a normal automobile, an airplane, a ship, a train, or the like.

１座席
１１ポール部材（柱状部材）
１２１上スライダ（第１移動体）
１２２中スライダ（第２移動体）
１２３下スライダ（第３移動体）
１３駆動機構
１８ストッパ
２１第１リンク
２１３下方延設部（ガイド部、支持部）
２２第２リンク
２３第３リンク
２４第４リンク
２５第５リンク
２６第６リンク
３０背凭れ部
４０座部
５０クッション体
６０リンク回転機構
Ｐ３第３ピン（ピン部材）
Ｘ１立ち座り状態
Ｘ２着座状態
1 seat 11 pole member (columnar member)
121 Upper slider (first moving body)
122 Middle slider (second moving body)
123 Lower slider (third moving body)
13 Drive mechanism 18 Stopper 21 First link 213 Downward extending portion (guide portion, support portion)
22 2nd link 23 3rd link 24 4th link 25 5th link 26 6th link 30 Backrest part 40 Seat part 50 Cushion body 60 Link rotation mechanism P3 3rd pin (pin member)
X1 Standing and sitting state X2 Sitting state

Claims

A seat that can take a sitting state that supports the back and buttocks of a seated person in a substantially standing posture and a sitting state that supports the back and buttocks of a seated person in a normal sitting position,
A pair of left and right columnar members extending in the vertical direction and fixed to the structure on which the seat is disposed on the rear side of the seat;
An upper first moving body, a lower second moving body, which are connected to each of the pair of columnar members so as to be vertically movable and spaced apart in the standing position;
A first end portion is supported so as to be rotatable in the vertical direction with respect to the second moving body, and a seat portion for supporting a seated person's buttocks on the other end portion is disposed to be inclined forward and downward in the standing state. 1 link and
One end is supported so as not to be vertically rotatable with respect to the first moving body, and the other end is supported so as not to be vertically rotatable relative to the second moving body, and a backrest portion that supports the back of the seated person is provided on the front side. In a standing state, the columnar member is arranged so as to extend substantially in parallel, or one end side is supported so as to be vertically rotatable with respect to the first moving body and the other end side is the second moving body or the A second link supported by a part of the first link so as to be rotatable in the vertical direction and having a backrest portion supporting a seated person's back on the front side extending substantially parallel to the columnar member in the standing state. When,
A drive mechanism for driving the first moving body or the second moving body up and down with respect to the columnar member;
A link rotation mechanism that rotates the first link upward with respect to the second moving body as the second moving body descends.

In claim 1,
The link rotation mechanism is
A third moving body that is connected to each of the pair of columnar members so as to be movable up and down and spaced apart from the second moving body in the standing and sitting state;
A third link in which one end is supported so as to be vertically rotatable with respect to the third moving body and the other end is supported in a vertically rotatable manner with respect to the first link on the front side of the second moving body;
The pair of columnar members are disposed below the third moving body, and when the second moving body is lowered, the third moving body is prohibited from descending and the second moving body and the third moving body are prohibited. A seat provided with a stopper for reducing a relative distance from the body.

In claim 2,
The second link is supported such that one end thereof is rotatable in the vertical direction with respect to the first moving body, and the other end is disposed between the second moving body and the seat in the standing position and the second link A seat supported so as to be vertically rotatable with respect to the first link between a height position of a moving body and a height position of the third moving body.

In claim 2 or claim 3,
A cushion body that supports one end of the first link so as to be vertically rotatable with respect to the other end of the first link and supports the thigh of the seated person on the other end is lower than the seat in the standing position. A fourth link disposed at a height position;
A fifth link whose one end is supported so as to be vertically rotatable with respect to a part of the third link;
A sixth link whose one end is supported so as to be vertically rotatable with respect to a part of the fourth link other than one end of the fourth link;
When the other end portion side of the fifth link and the other end portion side of the sixth link are in the standing state, the fifth link and the sixth link are vertically moved so as to form a substantially V shape in a left and right side view. A pin member coupled to be rotatable in a direction;
The first link is disposed on the first link, and when the first link rotates upward with respect to the second moving body, the pin member is pushed along with the rotation to move the fourth link to the first link. And a guide part that rotates upward with respect to the other end part side.

In any one of Claims 1-4,
When the seat is in the seated state, the seat includes a support portion that extends in a vertical direction between a lower portion of the seat portion and a floor.