JP3584550B2 - Vehicle seat - Google Patents

Vehicle seat Download PDF

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Publication number
JP3584550B2
JP3584550B2 JP15059495A JP15059495A JP3584550B2 JP 3584550 B2 JP3584550 B2 JP 3584550B2 JP 15059495 A JP15059495 A JP 15059495A JP 15059495 A JP15059495 A JP 15059495A JP 3584550 B2 JP3584550 B2 JP 3584550B2
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Japan
Prior art keywords
cylindrical member
cylindrical
seat
rotation
vehicle
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Expired - Fee Related
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JP15059495A
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Japanese (ja)
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JPH092112A (en
Inventor
林  正樹
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Araco Corp
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Araco Corp
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60NSEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/14Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable rotatable, e.g. to permit easy access
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60NSEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/14Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable rotatable, e.g. to permit easy access
    • B60N2/146Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable rotatable, e.g. to permit easy access characterised by the locking device
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60NSEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/16Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
    • B60N2/1605Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable characterised by the cinematic
    • B60N2/163Slides only

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Seats For Vehicles (AREA)

Description

【0001】
【産業上の利用分野】
本発明は車両用シートに関する。
【0002】
【従来の技術】
車両用シートの一形式として、実開平6−27298号公報に示されているように、車両フロアに対して上下方向へ移動可能でかつ水平方向へ回転可能な車両用シートがある。当該形式の車両用シートは、シートを上下方向へ移動させて位置調整するための上下位置調整機構と、シートを水平方向に回転させて対向位置を調整するための回転位置調整機構を備え、着座者が乗降する際にシートを乗降口側へ回転させるとともに下降させることにより、着座者の乗降の便を図るように構成されている。
【0003】
【発明が解決しようとする課題】
ところで、当該車両用シートにおいては、上下位置調整機構と回転位置調整機構が2段に配設されていて機構が極めて複雑に構成されており、また上下位置調整と回転位置調整はそれぞれ単独で行えるにすぎず、必ずしも使い勝手が良いとはいえない。従って、本発明の目的は、車両フロアに対して上下方向へ移動可能でかつ水平方向へ回転可能な車両用シートにおいて、上下位置調整機構と回転位置調整機構を一体の構成として簡単な構造にするとともに、シートの回転に応じて上下方向の位置調整を可能に構成して、着座者の乗降時の使い勝手を向上させることにある。
【0004】
【課題を解決するための手段】
本発明は、車両フロアに対して上下方向へ移動可能でかつ水平方向へ回転可能な車両用シートであって、内外周のいずれか一方にネジ部を有し車両フロア側に固定した第1の円柱部材と、内外周のいずれか一方に前記第1の円柱部材のネジ部とは逆方向のネジ部を有しシートの下面側に固定した第2の円柱部材と、内外周のいずれか他方の下端部側に前記第1の円柱部材のネジ部に螺合する第1のネジ部を有するとともに上端部側に前記第2の円柱部材のネジ部に螺合する第2のネジ部を有しこれら第1の円柱部材および第2の円柱部材に進退可能に螺合する第3の円柱部材と、前記第1の円柱部材と前記第3の円柱部材との間に設けられこれら両円柱部材の相対回転を解除可能に規制する第1の回転規制手段と、前記第1の円柱部材と前記第2の円柱部材との間に設けられこれら両円柱部材の相対回転を解除可能に規制する第2の回転規制手段を備えていることを特徴とするものである。
【0005】
本発明に係る車両用シートにおいては、前記各円柱部材を円筒状に成形して、これら円柱部材内にて車両フロア側とシート下面側との間に圧縮スプリングを介装することが好ましい。
【0006】
【発明の作用・効果】
このように構成した車両用シートにおいては、第1,第2,および第3の円柱部材は第1,第2の両回転規制手段により互いの回転を規制されていて、例えばシートを車両の前方に対向して位置させている。この状態のシートを上下方向に位置調整するには、第1の回転規制手段を操作して第1,第3の円柱部材の互いの回転規制を解除し、その後第3の円柱部材を回転させる。これにより、第3の円柱部材は第1,第2の両円柱部材に対して回転し、第3の円柱部材の回転方向に応じて第1,第2の両円柱部材を離間する方向または接近する方向に進退させ、シートを上下方向に移動させる。シートが上下方向に所望量移動した後、第1の回転規制手段の操作を解除して第1,第3の円柱部材の回転を規制すれば、シートは所望の高さに調整されてその状態を保持する。
【0007】
一方、着座者の乗降を容易にすべく車両前方に対向しているシートを乗降口側へ回転させるには、第2の回転規制手段を操作して第1,第2の円柱部材の互いの回転規制を解除し、その後シートを回転させる。これにより、第2の円柱部材が第3の円柱部材に対して回転して、シートを乗降口側へ回転させつつ下降させて乗降口側へ位置させる。また、この状態にあるシートを車両前方に対向する位置に回転させるには、同シートを上記した回転方向とは逆方向へ回転させる。これにより、シートは回転しつつ第2の円柱部材を第3の円柱部材に対して回転させ、シートを回転に応じて上昇させて車両前方に対向する位置に移行させる。
【0008】
この場合、各円柱部材を円筒状に形成するとともにも各円柱部材内にて車両フロア側とシートの下面側との間に圧縮スプリングを介装すれば、圧縮スプリングの付勢力によりシートの上昇が円滑になされる。
【0009】
このように、本発明に係る車両用シートにおいては、上下位置調整機構と回転位置調整機構を3つの円柱部材により一体的に構成しているため、これら両機構の構造が簡単な構成となり、またシートの回転に応じて上下方向の位置調整を可能に構成しているため、着座者の乗降時における使い勝手が良い。
【0010】
【実施例】
以下本発明を図面に基づいて説明するに、図1、図3、図5、図7および図9には、本発明の第1実施例に係る車両用シートが示されている。当該車両用シートは、シート本体10aと一対のシートトラック10bとの間に、位置調整機構10cを備えている。
【0011】
シート本体10aはシートクッション11a、シートバック11bおよびヘッドレスト11cを有する公知のもので、また各シートトラック10bはロアレール12aおよびアッパレール12bを有する公知のものである。各シートトラック10bはそのロアレール12aにて車両フロアに固定されて前後方向に延びていて、ロアレール12aに摺動可能に嵌合する両アッパレール12b上には取付プレート12cが固定されている。この取付プレート12c上には、後述する位置調整機構10cを介してシート本体10aが組付けられていて、シート本体10aは公知のシート本体と同様に、アッパレール12bとともにロアレール12aに沿って前後方向へ位置調整可能になっている。
【0012】
しかして、位置調整機構10cは第1円筒部材13、第2円筒部材14、第3円筒部材15、第1回転規制手段16、第2回転規制手段17、および圧縮スプリング18にて構成されている。第1円筒部材13は本発明の第1の円柱部材、第2円筒部材14は本発明の第2の円柱部材、第3円筒部材15は本発明の第3の円柱部材に該当するもので、本発明の各円柱部材を円筒状に形成したものである。第1円筒部材13はその外周に左ネジに形成されているネジ部13aを備え、シートトラック10b上の取付プレート12c上に固定されている。第2円筒部材14はその外周に右ネジに形成されているネジ部14aを備え、シート本体10aを構成するシートクッション11aの下面に固定されている。
【0013】
第3円筒部材15はその内周に左ネジに形成された第1ネジ部15aと、右ネジに形成された第2ネジ部15bを備えている。第1ネジ部15aは第3円筒部材15の下端部側に位置して、第1円筒部材13のネジ部13aに進退可能に螺合し、また第2ネジ部15bは第3円筒部材15の上端部側に位置して、第2円筒部材14のネジ部14aに進退可能に螺合するように形成されている。かかる第3円筒部材15は、各ネジ部15a,15bにて各円筒部材13,14のネジ部13a,14aに螺合されていて、各円筒部材13,14を互いに連結している。このように連結された状態の円筒部材13〜15内には、取付プレート12cとシートクッション11aの下面間に圧縮スプリング18が介装されている。圧縮スプリング18は、シート本体10aを所定の力で上方に付勢している。
【0014】
かかる位置調整機構10cを構成する各円筒部材13〜15においては、第1,第3円筒部材13,15間に第1回転規制手段16が配設されており、また第1円筒部材13と第2円筒部材14間に第2回転規制手段17が配設されている。
【0015】
第1回転規制手段16は図1〜図5に示すように、第1円筒部材13の内部に設けた扇形状の取付プレート13bの上面に設けたロックプレート16aと、第3円筒部材15の長手方向の中間部に設けたロックレバー16bを備えている。ロックプレート16aは円弧状を呈する周形状に形成されているもので、第1円筒部材13と同心的に配置されている。また、ロックプレート16aの上端は上下方向に傾斜する傾斜状に形成されているとともに、傾斜状の上端には所定間隔を保持して多数の係止溝16cが形成されている。ロックレバー16bは第3円筒部材15の中間部に設けた貫通孔15cを貫通した状態で、同円筒部材15に設けた取付アーム部15dにトーションスプリング16dおよび支持ピン16eを介して上下方向へ回動可能に組付けられている。かかる状態のロックレバー16bの先端部はロックプレート16aの上端部に延びていて、トーションスプリング16dの付勢力によりロックプレート16aの各係止溝16cの1つに弾撥的に係止されている。これにより、第3円筒部材15は第1円筒部材13に対して回転を規制されている。
【0016】
第2回転規制手段17は図1、および図6〜図9に示すように、第1円筒部材13の内部に設けた取付プレート13bに設けたロック孔17aと、第2円筒部材14の上端部に設けたロックレバー17bを備えている。ロック孔17aは円弧状を呈するガイド部17a1と、ガイド部17a1の基端部に設けた内方へ延びるロック部17a2とからなり、ガイド部17a1は第1円筒部材13と同心的に配置されている。ロックレバー17bは略L字状のもので、第2円筒部材14の上端部に設けた切欠孔14bを貫通した状態で、同円筒部材14に設けた取付アーム部14cにトーションスプリング17cおよび支持ピン17dを介して上下方向へ回動可能に組付けられている。かかる状態のロックレバー17bの先端部はロック孔17aに挿入されていて、トーションスプリング17cの付勢力によりロック孔17aのロック部17a2に弾撥的に係止されている。これにより、第2円筒部材14は第1円筒部材13に対して回転を規制されている。
【0017】
このように構成した車両用シートにおいては、シート本体10aが車両前方に対向して位置している場合には、シート本体10aは例えば図3に示すように最大高さに位置している。この状態においては、第1,第2,および第3円筒部材13〜15は、図2および図3に示すように第1回転規制手段16により、また図6および図7に示すように第2両回転規制手段17により互いの回転を規制されている。
【0018】
しかして、シート本体10aを下方へ位置調整するには、第1回転規制手段16のロックレバー16bを下方へ押動操作して、ロックレバー16bの先端部をロックプレート16aの係止溝16cから離間させる。これにより、第1,第3円筒部材13,15間の回転規制が解除され、その後第3円筒材15を回転させる。これにより、第3円筒部材15は第1,第2両円筒部材13,14に対して回転し、第3円筒部材15の回転方向に応じて第1,第2両円筒部材13,14接近する方向に後退させ、シート本体10aを下方に移動させて図5に示す状態に位置させる。その後、ロックレバー16bの押動操作を解除してその先端部を図4および図5に示すようにロックプレート16aの係止溝16cの1つに係止すれば、第1,第3円筒部材13,15の回転が規制されてシート本体10aは所望の高さに保持される。
【0019】
上記したシート本体10aの下方への位置調整時においては、例えば、図3および図5に示すように、第1円筒部材13と第3円筒部材15の間隔がA1からA2に変化するとともに、第2円筒部材14と第3円筒部材15の間隔がB1からB2に変化して、シート本体10aの高さは(A1−A2)+(B1−B2)だけ低下する。
【0020】
一方、着座者の乗降を容易にすべく、車両前方に対向している図7に示すシート本体10aを乗降口側へ回転させるには、第2回転規制手段17のロックレバー17bを引動操作してロックレバー17bの先端部をロック孔17aのロック部17a2から抜出して、第1,第2円筒部材13,14の回転規制を解除する。その後シート本体10aを乗降口側へ回転させれば、第2円筒部材14が第3円筒部材15に対して図8および図9に示すように回転して、シート本体10aは乗降口側へ回転しつつ下降して乗降口側へ位置する。この場合のシート本体10aの位置調整時においては、例えば、図7および図9に示すように、第1円筒部材13と第3円筒部材15の間隔は変化せず、第2円筒部材14と第3円筒部材15の間隔がC1からC2に変化して、シート本体10aの高さは(C1−C2)だけ低下する。
【0021】
また、この状態にあるシート本体10aを車両前方に対向する位置に回転させるには、シート本体10aを上記した回転方向とは逆方向へ回転させる。これにより、シート本体10aは回転しつつ第2円筒部材14を第3円筒部材15に対して回転させ、シート本体10aは図7に示すように回転に応じて上昇しつつ車両前方に対向する位置に移行する。この間、ロックレバー17bの先端部はロック孔17aのガイド部17a1を移動してロック部17a2に至り、トーションスプリング17cの作用によりロック部17a2に弾撥的に係止される。なお、シート本体10aの上昇は、圧縮スプリング18の付勢力により助勢されて円滑になされる。
【0022】
このように、当該車両用シートにおいては、位置調整機構10cを3つの円筒部材13〜15により、上下位置調整機構と回転位置調整機構の両機能を有する構成としているため、これら両機構の構造が簡単な構成となり、またシート本体10aの回転に応じて上下方向の位置調整を可能に構成しているため、着座者の乗降時における使い勝手が良い。
【0023】
図10には、本発明の第2実施例に係る車両用シートが示されている。当該車両用シートにおいては、第1回転規制手段19の構成および作動が第1実施例に係る車両用シートとは相違し、その他の構成および作動は同車両用シートと同様である。従って、以下には、第1回転規制手段19について詳細に説明するとともに、その他の構成については同一の構成部材および構成部位については同一の符号を付してその詳細な説明を省略するとともに、必要に応じて説明するにとどめる。
【0024】
しかして、第1回転規制手段19は第1円筒部材13の内部に設けた取付プレート13bの上面に設けたラックプレート19aと、第3円筒部材15の長手方向の中間部の外周に設けたスプリングカップラを備えている。ラックプレート19aは円弧状を呈する周形状に形成されているもので、第1円筒部材13と同心的に配置されている。また、ラックプレート19a上端は上下方向に傾斜する傾斜状に形成されているとともに、傾斜状の上端面にラック19a1が形成されている。スプリングカップラを構成する出力軸19bは、第3円筒部材15の中間部に設けた貫通孔15cを貫通していて、出力軸19bの内端側に固定し設けたピニオン19cがラックプレート19aのラック19a1に噛合している。一方、スプリングカップラの入力軸19dの外端部にはハンドルノブ19eが固定されている。スプリングカップラは公知の回転駆動機構であって、入力軸19d側からの回転力は出力軸19b側へ伝達されるが、出力軸19b側からの回転力は入力軸19d側へは伝達されないように構成されている。
【0025】
従って、当該車両用シートにおいては、スプリングカップラのハンドルノブ19eの非操作時には、第3円筒部材15は第1円筒部材13に対する回転を規制されており、ハンドルノブ19eの回転操作により出力軸19bおよびピニオン19cが回転し、ピニオン19cはラックプレート19aのラック19a1上を噛合しつつ移動し、第3円筒部材15を第1円筒部材13および第2円筒部材14に対して回転させる。これにより、第1,第2円筒部材13,14は第3円筒部材15を介して互いに離間または近接する方向へ移動し、シート本体10aを上下方向に移動させる。また、ハンドルノブ19eの回転操作を停止すると、第3円筒部材15の両円筒部材13,14に対する回転が規制され、シート本体10aは調整された位置に保持される。
【図面の簡単な説明】
【図1】本発明の第1実施例に係る車両用シートの位置調整機構を分解した状態の斜視図である。
【図2】同位置調整機構における第2回転規制手段のロックレバーを取除いた状態のシート本体が最高位置にある場合の平面図である。
【図3】同位置調整機構における図2の矢印3−3線方向に見た縦断側面図である。
【図4】同位置調整機構における第2回転規制手段を取除いた状態のシート本体が最低位置にある場合の平面図である。
【図5】同位置調整機構における図4の矢印5−5線方向に見た縦断側面図である。
【図6】同位置調整機構における第1回転規制手段のロックレバーを取除いた状態のシート本体が車両前方に対向して位置する状態での平面図である。
【図7】同位置調整機構における図6の矢印7−7線方向に見た縦断側面図である。
【図8】同位置調整機構における第1回転規制手段のロックレバーを取除いた状態のシート本体が乗降口に対向して位置する状態での平面図である。
【図9】同位置調整機構における図8の矢印9−9線方向に見た縦断側面図である。
【図10】本発明の第2実施例に係る車両用シートの位置調整機構を分解した状態の図1に対応する斜視図である。
【符号の説明】
10a…シート本体、10b…シートトラック、10c…位置調整機構、13…第1円筒部材、13a…ネジ部、14…第2円筒部材、14a…ネジ部、15…第3円筒部材、15a…第1ネジ部、15b…第2ネジ部、16…第1回転規制手段、16a…ロックプレート、16b…ロックレバー、17…第2回転規制手段、17a…ロック孔、17b…ロックレバー、18…圧縮スプリング、19…第1回転規制手段、19a…ラックプレート、19b…出力軸、19c…ピニオン、19d…入力軸、19e…ハンドルノブ。
[0001]
[Industrial applications]
The present invention relates to a vehicle seat.
[0002]
[Prior art]
As one type of vehicle seat, as shown in Japanese Utility Model Laid-Open Publication No. Hei 6-27298, there is a vehicle seat that can move up and down with respect to a vehicle floor and can rotate horizontally. The vehicle seat of this type includes a vertical position adjustment mechanism for moving the seat in the vertical direction to adjust the position, and a rotation position adjustment mechanism for rotating the seat in the horizontal direction to adjust the opposing position. When the person gets on and off the vehicle, the seat is rotated to the entrance side and lowered, so that the seated person can get on and off.
[0003]
[Problems to be solved by the invention]
By the way, in the vehicle seat, the vertical position adjusting mechanism and the rotational position adjusting mechanism are arranged in two stages, so that the mechanism is extremely complicated, and the vertical position adjusting and the rotational position adjusting can be performed independently. This is not always convenient. Therefore, an object of the present invention is to provide a vehicle seat that can move vertically in a vertical direction with respect to a vehicle floor and that can rotate in a horizontal direction, and has a simple structure in which a vertical position adjustment mechanism and a rotation position adjustment mechanism are integrally formed. It is another object of the present invention to make it possible to adjust the position in the vertical direction in accordance with the rotation of the seat, and to improve the usability of the occupant when getting on and off the seat.
[0004]
[Means for Solving the Problems]
The present invention relates to a vehicle seat that is movable in the vertical direction with respect to the vehicle floor and rotatable in the horizontal direction, and has a screw portion on one of the inner and outer circumferences and is fixed to the vehicle floor side. A cylindrical member; a second cylindrical member fixed to the lower surface of the sheet having a threaded portion in one of the inner and outer peripheries opposite to the threaded portion of the first columnar member; A lower end of the first cylindrical member has a first screw portion that is screwed to the screw portion of the first cylindrical member, and an upper end portion has a second screw portion that is screwed to the screw portion of the second cylindrical member. A third columnar member which is screwably engaged with the first columnar member and the second columnar member, and which is provided between the first columnar member and the third columnar member. First rotation restricting means for restricting the relative rotation of the first cylinder member to be releasable; Is provided between the second cylindrical member is characterized in that it comprises a second rotation restricting means for releasably restricting relative rotation of both cylindrical members.
[0005]
In the vehicle seat according to the present invention, it is preferable that each of the columnar members is formed into a cylindrical shape, and a compression spring is interposed between the vehicle floor side and the seat lower surface side in these columnar members.
[0006]
[Action and Effect of the Invention]
In the vehicle seat configured as described above, the first, second, and third cylindrical members are restricted from rotating with each other by the first and second rotation restricting means. Are located opposite to each other. To adjust the position of the sheet in this state in the vertical direction, the first rotation restricting means is operated to release the rotation restriction of the first and third cylindrical members, and then the third cylindrical member is rotated. . Accordingly, the third columnar member rotates with respect to the first and second columnar members, and separates or approaches the first and second columnar members in accordance with the rotation direction of the third columnar member. To move the sheet up and down. If the operation of the first rotation restricting means is released and the rotation of the first and third cylindrical members is restricted after the sheet is moved by a desired amount in the vertical direction, the sheet is adjusted to a desired height and the state is adjusted. Hold.
[0007]
On the other hand, in order to rotate the seat facing the front of the vehicle toward the entrance in order to facilitate the getting on and off of the seated person, the second rotation restricting means is operated and the first and second cylindrical members are mutually moved. Release the rotation restriction, and then rotate the sheet. As a result, the second columnar member rotates with respect to the third columnar member, and lowers the seat while rotating the seat to the entrance / exit side to position the seat at the entrance / exit side. In order to rotate the seat in this state to a position facing the front of the vehicle, the seat is rotated in a direction opposite to the above-described rotation direction. As a result, the seat rotates and the second cylindrical member is rotated with respect to the third cylindrical member, and the seat is raised in accordance with the rotation and moved to a position facing the front of the vehicle.
[0008]
In this case, if each cylindrical member is formed in a cylindrical shape and a compression spring is interposed between the vehicle floor side and the lower surface side of the seat in each cylindrical member, the seat is raised by the urging force of the compression spring. It is done smoothly.
[0009]
As described above, in the vehicle seat according to the present invention, since the vertical position adjusting mechanism and the rotational position adjusting mechanism are integrally formed by the three columnar members, the structure of these two mechanisms is simplified. Since the vertical position can be adjusted in accordance with the rotation of the seat, it is easy to use when the seated person gets on and off.
[0010]
【Example】
Hereinafter, the present invention will be described with reference to the drawings. FIG. 1, FIG. 3, FIG. 5, FIG. 7, and FIG. 9 show a vehicle seat according to a first embodiment of the present invention. The vehicle seat includes a position adjusting mechanism 10c between the seat body 10a and a pair of seat tracks 10b.
[0011]
The seat body 10a is a known one having a seat cushion 11a, a seat back 11b and a headrest 11c, and each seat track 10b is a known one having a lower rail 12a and an upper rail 12b. Each seat track 10b is fixed to the vehicle floor by its lower rail 12a and extends in the front-rear direction, and a mounting plate 12c is fixed on both upper rails 12b slidably fitted to the lower rail 12a. A seat body 10a is mounted on the mounting plate 12c via a position adjusting mechanism 10c, which will be described later. The seat body 10a moves in the front-rear direction along with the lower rail 12a together with the upper rail 12b, similarly to a known seat body. The position can be adjusted.
[0012]
Thus, the position adjusting mechanism 10c includes the first cylindrical member 13, the second cylindrical member 14, the third cylindrical member 15, the first rotation restricting means 16, the second rotation restricting means 17, and the compression spring 18. . The first cylindrical member 13 corresponds to a first cylindrical member of the present invention, the second cylindrical member 14 corresponds to a second cylindrical member of the present invention, and the third cylindrical member 15 corresponds to a third cylindrical member of the present invention. Each cylindrical member of the present invention is formed in a cylindrical shape. The first cylindrical member 13 has a threaded portion 13a formed on the outer periphery thereof with a left-hand thread, and is fixed on a mounting plate 12c on the seat track 10b. The second cylindrical member 14 has a screw portion 14a formed on the outer periphery thereof with a right-hand thread, and is fixed to the lower surface of the seat cushion 11a constituting the seat body 10a.
[0013]
The third cylindrical member 15 has a first threaded portion 15a formed on the inner periphery thereof with a left-hand thread and a second threaded portion 15b formed on a right-hand thread. The first screw portion 15a is located on the lower end side of the third cylindrical member 15 and is screwed to the screw portion 13a of the first cylindrical member 13 so as to be able to advance and retreat, and the second screw portion 15b is formed of the third cylindrical member 15. It is formed on the upper end side so as to be threadably engaged with the screw portion 14a of the second cylindrical member 14. The third cylindrical member 15 is screwed to the screw portions 13a and 14a of the cylindrical members 13 and 14 at the screw portions 15a and 15b, and connects the cylindrical members 13 and 14 to each other. A compression spring 18 is interposed between the mounting plate 12c and the lower surface of the seat cushion 11a in the cylindrical members 13 to 15 thus connected. The compression spring 18 urges the seat body 10a upward with a predetermined force.
[0014]
In each of the cylindrical members 13 to 15 constituting the position adjusting mechanism 10c, the first rotation restricting means 16 is disposed between the first and third cylindrical members 13 and 15, and the first cylindrical member 13 and the The second rotation restricting means 17 is provided between the two cylindrical members 14.
[0015]
As shown in FIGS. 1 to 5, the first rotation restricting means 16 includes a lock plate 16 a provided on the upper surface of a fan-shaped mounting plate 13 b provided inside the first cylindrical member 13, and a longitudinal member of the third cylindrical member 15. A lock lever 16b is provided at an intermediate portion in the direction. The lock plate 16 a is formed in a circular arc-shaped peripheral shape, and is arranged concentrically with the first cylindrical member 13. In addition, the upper end of the lock plate 16a is formed in an inclined shape that is inclined in the vertical direction, and a large number of locking grooves 16c are formed in the inclined upper end with a predetermined interval kept therebetween. The lock lever 16b is vertically turned through a torsion spring 16d and a support pin 16e to a mounting arm 15d provided in the third cylindrical member 15 while passing through a through hole 15c provided in an intermediate portion of the third cylindrical member 15. It is movably assembled. The distal end of the lock lever 16b in this state extends to the upper end of the lock plate 16a, and is resiliently locked in one of the locking grooves 16c of the lock plate 16a by the urging force of the torsion spring 16d. . Thus, the rotation of the third cylindrical member 15 with respect to the first cylindrical member 13 is restricted.
[0016]
As shown in FIGS. 1 and 6 to 9, the second rotation restricting means 17 includes a lock hole 17 a provided in a mounting plate 13 b provided inside the first cylindrical member 13, and an upper end portion of the second cylindrical member 14. Is provided with a lock lever 17b. The lock hole 17a includes a guide portion 17a1 having an arc shape, and an inwardly extending lock portion 17a2 provided at the base end of the guide portion 17a1. The guide portion 17a1 is arranged concentrically with the first cylindrical member 13. I have. The lock lever 17b has a substantially L-shape. The torsion spring 17c and the support pin are attached to a mounting arm portion 14c provided in the cylindrical member 14 while passing through a cutout hole 14b provided in an upper end portion of the second cylindrical member 14. It is mounted so as to be rotatable up and down via 17d. The distal end of the lock lever 17b in this state is inserted into the lock hole 17a, and is resiliently locked to the lock portion 17a2 of the lock hole 17a by the urging force of the torsion spring 17c. Thereby, the rotation of the second cylindrical member 14 with respect to the first cylindrical member 13 is restricted.
[0017]
In the vehicle seat configured as described above, when the seat body 10a is located facing the front of the vehicle, the seat body 10a is located at the maximum height, for example, as shown in FIG. In this state, the first, second, and third cylindrical members 13 to 15 are moved by the first rotation restricting means 16 as shown in FIGS. 2 and 3 and the second cylindrical member 13 to 15 as shown in FIGS. The rotation of each other is regulated by the both rotation regulating means 17.
[0018]
In order to adjust the position of the seat body 10a downward, the lock lever 16b of the first rotation restricting means 16 is pushed downward to move the tip of the lock lever 16b from the locking groove 16c of the lock plate 16a. Separate. Thereby, the rotation regulation between the first and third cylindrical members 13 and 15 is released, and then the third cylindrical member 15 is rotated. As a result, the third cylindrical member 15 rotates with respect to the first and second cylindrical members 13 and 14, and approaches the first and second cylindrical members 13 and 14 according to the rotation direction of the third cylindrical member 15. The seat main body 10a is moved downward to be in the state shown in FIG. Thereafter, when the pushing operation of the lock lever 16b is released and its tip is locked in one of the locking grooves 16c of the lock plate 16a as shown in FIGS. 4 and 5, the first and third cylindrical members are formed. The rotation of 13 and 15 is regulated, and the sheet main body 10a is held at a desired height.
[0019]
At the time of adjusting the position of the seat body 10a downward, for example, as shown in FIGS. 3 and 5, the interval between the first cylindrical member 13 and the third cylindrical member 15 changes from A1 to A2, The distance between the second cylindrical member 14 and the third cylindrical member 15 changes from B1 to B2, and the height of the seat body 10a decreases by (A1-A2) + (B1-B2).
[0020]
On the other hand, in order to rotate the seat body 10a facing the front of the vehicle shown in FIG. 7 to the entrance / exit side in order to facilitate the getting on / off of the seated person, the lock lever 17b of the second rotation restricting means 17 is pulled. Then, the distal end of the lock lever 17b is pulled out of the lock portion 17a2 of the lock hole 17a to release the rotation regulation of the first and second cylindrical members 13, 14. Thereafter, when the seat body 10a is rotated to the entrance / exit side, the second cylindrical member 14 is rotated with respect to the third cylindrical member 15 as shown in FIGS. 8 and 9, and the seat body 10a is rotated to the entrance / exit side. And descend to the entrance side. At the time of adjusting the position of the seat body 10a in this case, for example, as shown in FIGS. 7 and 9, the interval between the first cylindrical member 13 and the third cylindrical member 15 does not change, and the second cylindrical member 14 and the The interval between the three cylindrical members 15 changes from C1 to C2, and the height of the sheet body 10a decreases by (C1-C2).
[0021]
To rotate the seat body 10a in this state to a position facing the front of the vehicle, the seat body 10a is rotated in a direction opposite to the rotation direction described above. As a result, the seat body 10a rotates and rotates the second cylindrical member 14 with respect to the third cylindrical member 15, and the seat body 10a rises in accordance with the rotation and faces the front of the vehicle as shown in FIG. Move to During this time, the tip of the lock lever 17b moves through the guide 17a1 of the lock hole 17a to reach the lock 17a2, and is resiliently locked to the lock 17a2 by the action of the torsion spring 17c. In addition, the lifting of the seat body 10 a is smoothly assisted by the urging force of the compression spring 18.
[0022]
As described above, in the vehicle seat, the position adjusting mechanism 10c is configured to have both functions of the vertical position adjusting mechanism and the rotational position adjusting mechanism by the three cylindrical members 13 to 15, so that the structures of these two mechanisms are provided. The configuration is simple, and the vertical position can be adjusted according to the rotation of the seat body 10a, so that the occupant is easy to use when getting on and off.
[0023]
FIG. 10 shows a vehicle seat according to a second embodiment of the present invention. In the vehicle seat, the configuration and operation of the first rotation restricting means 19 are different from those of the vehicle seat according to the first embodiment, and the other configurations and operations are the same as those of the vehicle seat. Therefore, in the following, the first rotation restricting means 19 will be described in detail, and the same reference numerals will be given to the same constituent members and constituent parts as to the other components, and detailed description thereof will be omitted. Only the explanation will be given.
[0024]
Thus, the first rotation restricting means 19 includes a rack plate 19 a provided on the upper surface of the mounting plate 13 b provided inside the first cylindrical member 13, and a spring provided on the outer periphery of the intermediate portion in the longitudinal direction of the third cylindrical member 15. It has a coupler. The rack plate 19 a is formed in a circular arc-shaped peripheral shape, and is arranged concentrically with the first cylindrical member 13. The upper end of the rack plate 19a is formed to be inclined in the vertical direction, and a rack 19a1 is formed on the inclined upper end surface. The output shaft 19b constituting the spring coupler passes through a through hole 15c provided in an intermediate portion of the third cylindrical member 15, and a pinion 19c fixedly provided on the inner end side of the output shaft 19b has a rack plate 19a. 19a1. On the other hand, a handle knob 19e is fixed to the outer end of the input shaft 19d of the spring coupler. The spring coupler is a known rotary drive mechanism. The rotational force from the input shaft 19d is transmitted to the output shaft 19b, but the rotational force from the output shaft 19b is not transmitted to the input shaft 19d. It is configured.
[0025]
Accordingly, in the vehicle seat, when the handle knob 19e of the spring coupler is not operated, the rotation of the third cylindrical member 15 with respect to the first cylindrical member 13 is restricted, and the rotation of the handle knob 19e causes the output shaft 19b and the output shaft 19b to rotate. The pinion 19c rotates, the pinion 19c moves while meshing on the rack 19a1 of the rack plate 19a, and rotates the third cylindrical member 15 with respect to the first cylindrical member 13 and the second cylindrical member 14. As a result, the first and second cylindrical members 13 and 14 move in a direction away from or close to each other via the third cylindrical member 15 and move the seat body 10a in the vertical direction. When the rotation operation of the handle knob 19e is stopped, the rotation of the third cylindrical member 15 with respect to the two cylindrical members 13 and 14 is restricted, and the seat body 10a is held at the adjusted position.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a vehicle seat position adjusting mechanism according to a first embodiment of the present invention.
FIG. 2 is a plan view of the position adjustment mechanism in a state where a lock lever of a second rotation restricting unit is removed and a seat body is at a highest position.
FIG. 3 is a vertical sectional side view of the position adjusting mechanism as viewed in the direction of arrow 3-3 in FIG. 2;
FIG. 4 is a plan view of the position adjusting mechanism in a state where a second rotation restricting unit is removed and a seat body is at a lowest position.
FIG. 5 is a vertical sectional side view of the position adjustment mechanism as viewed in the direction of the arrows 5-5 in FIG. 4;
FIG. 6 is a plan view of the position adjustment mechanism in a state in which a lock lever of a first rotation restricting unit is removed and a seat body is located facing the front of the vehicle;
FIG. 7 is a vertical sectional side view of the position adjustment mechanism as viewed in the direction of the arrows 7-7 in FIG. 6;
FIG. 8 is a plan view of the position adjustment mechanism in a state in which a lock lever of a first rotation restricting unit is removed and a seat body is positioned so as to face an entrance;
FIG. 9 is a vertical sectional side view of the position adjustment mechanism as viewed in the direction of the arrows 9-9 in FIG. 8;
FIG. 10 is a perspective view corresponding to FIG. 1 in a state where a position adjusting mechanism for a vehicle seat according to a second embodiment of the present invention is disassembled.
[Explanation of symbols]
10a: seat body, 10b: seat track, 10c: position adjusting mechanism, 13: first cylindrical member, 13a: screw portion, 14: second cylindrical member, 14a: screw portion, 15: third cylindrical member, 15a: first 1 screw portion, 15b second screw portion, 16 first rotation restricting means, 16a lock plate, 16b lock lever, 17 second rotation restricting means, 17a lock hole, 17b lock lever, 18 compression Spring, 19: first rotation restricting means, 19a: rack plate, 19b: output shaft, 19c: pinion, 19d: input shaft, 19e: handle knob.

Claims (2)

車両フロアに対して上下方向へ移動可能でかつ水平方向へ回転可能な車両用シートであり、内外周のいずれか一方にネジ部を有し車両フロア側に固定した第1の円柱部材と、内外周のいずれか一方に前記第1の円柱部材のネジ部とは逆方向のネジ部を有しシートの下面側に固定した第2の円柱部材と、内外周のいずれか他方の下端部側に前記第1の円柱部材のネジ部に螺合する第1のネジ部を有するとともに上端部側に前記第2の円柱部材のネジ部に螺合する第2のネジ部を有しこれら第1の円柱部材および第2の円柱部材に進退可能に螺合する第3の円柱部材と、前記第1の円柱部材と前記第3の円柱部材との間に設けられこれら両円柱部材の相対回転を解除可能に規制する第1の回転規制手段と、前記第1の円柱部材と前記第2の円柱部材との間に設けられこれら両円柱部材の相対回転を解除可能に規制する第2の回転規制手段を備えていることを特徴とする車両用シート。A vehicle seat that is movable in the vertical direction with respect to the vehicle floor and is rotatable in the horizontal direction. A second cylindrical member having a threaded portion in the opposite direction to the threaded portion of the first cylindrical member on one of its circumferences and fixed to the lower surface side of the sheet; It has a first threaded portion screwed to the threaded portion of the first columnar member, and has a second threaded portion threaded to the threaded portion of the second columnar member on the upper end side. A third cylindrical member screwed to the cylindrical member and the second cylindrical member so as to advance and retreat, and provided between the first cylindrical member and the third cylindrical member, the relative rotation of the two cylindrical members is released. First rotation restricting means for restricting the rotation, the first cylindrical member, and the second cylindrical portion Vehicle seat, characterized in that it comprises a second rotation restricting means for releasably restricting relative rotation of both cylindrical members provided between the. 請求項1に記載の車両用シートにおいて、前記各円柱部材を円筒状に形成して、これら円柱部材内にて車両フロア側とシート下面側との間に圧縮スプリングを介装したことを特徴とする車両用シート。2. The vehicle seat according to claim 1, wherein each of the cylindrical members is formed in a cylindrical shape, and a compression spring is interposed between the vehicle floor side and the seat lower surface side in the cylindrical members. Vehicle seat.
JP15059495A 1995-06-16 1995-06-16 Vehicle seat Expired - Fee Related JP3584550B2 (en)

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JP5221169B2 (en) * 2008-02-29 2013-06-26 株式会社オーテックジャパン Rotating seat for vehicle
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