JP2020138732A5

JP2020138732A5 -

Info

Publication number: JP2020138732A5
Application number: JP2020100363A
Authority: JP
Filing date: 2020-06-09
Publication date: 2021-04-22
Anticipated expiration: 2037-04-03

Description

本発明の少なくともいくつかの実施形態に係る車両用シート（１）は、車体に支持されたベース部材（２）と、シートクッション（３）のフレームを構成するクッションフレーム（５）と、前記ベース部材に対して前記クッションフレームを上下に変位可能に支持するリンク機構（６）と、前記リンク機構を介して前記クッションフレームを上下方向に駆動する駆動機構（７）と、前記クッションフレームを上方に向けて付勢するために、前記クッションフレームの左右側部間に延在し、かつ左右の第１端（１７）及び第２端（１６ｂ）にて、前記リンク機構の枢支部に於ける互いに相対回転する第１の部分（１２）及び第２の部分（８）に結合されたトーションバー（１４）とを備える高さ調節可能な前記シートクッションを備えた車両用シートであって、前記トーションバーが、左右方向に延在する軸部（１５）、及び、前記第２端側に於いて少なくとも部分的に前記軸部に交差する方向に延出して前記第２の部分に結合された延長部（１６）を有し、前記第１の部分は、前記トーションバーの前記第１端を回転不能に支持し、前記トーションバーの前記軸部の前記第２端側を、前記トーションバーの軸芯の変位を抑制するための位置保持部材（２４）を介して支持し、前記クッションフレーム及び前記リンク機構の何れか一方が、他方に対して回転可能な連結部材（１２）を有し、前記連結部材が前記第１の部分を構成し、前記位置保持部材が、筒形の輪郭を含む側周壁を有する本体部（２５）を有し、該本体部が、前記連結部材の内孔（１３）に受容され、前記位置保持部材の前記本体部の外周面に凹部が設けられていることを特徴とする。
本発明の少なくともいくつかの実施形態に係る車両用シートは、上記構成に於いて、前記本体部は、前記軸部を挿通させる貫通孔（２７）を含み、前記側周壁は、前記貫通孔を画成する内周壁（３１）と、前記第１の部分に支持される外周壁（３２）と、前記内周壁及び前記外周壁間を連結する複数の補強壁（３３）とを有することを特徴とする。
本発明の少なくともいくつかの実施形態に係る車両用シートは、上記構成に於いて、前記補強壁は、半径方向に延在することを特徴とする。
本発明の少なくともいくつかの実施形態に係る車両用シートは、上記構成に於いて、前記補強壁は、半径方向において前記凹部に整合することを特徴とする。
本発明の少なくともいくつかの実施形態に係る車両用シートは、上記構成の何れかに於いて、前記凹部は複数設けられ、少なくとも１つの前記凹部の周方向の長さは、互いに周方向に隣合う２つの前記凹部間の周方向距離よりも長いことを特徴とする。
本発明の少なくともいくつかの実施形態に係る車両用シートは、上記構成の何れかに於いて、前記本体部は、前記外周面から半径方向の外側に延出する鍔部（２８）を有し、前記凹部は、前記鍔部に連続していることを特徴とする。
本発明の少なくともいくつかの実施形態に係る車両用シートは、上記構成に於いて、前記外周面に於ける前記凹部の前記半径方向への窪み量は、前記鍔部における前記凹部から延出している部分の半径方向への延出長よりも短いことを特徴とする。
本発明の少なくともいくつかの実施形態に係る車両用シートは、上記構成の何れかに於いて、前記位置保持部材が、左右方向の内側端面に、前記延長部を受容可能な、半径方向に延在するように凹設された受容溝（３５）を有することを特徴とする。
本発明の少なくともいくつかの実施形態に係る車両用シート（１）は、車体に支持されたベース部材（２）と、シートクッション（３）のフレームを構成するクッションフレーム（５）と、前記ベース部材に対して前記クッションフレームを上下に変位可能に支持するリンク機構（６）と、前記リンク機構を介して前記クッションフレームを上下方向に駆動する駆動機構（７）と、前記クッションフレームを上方に向けて付勢するために、前記クッションフレームの左右側部間に延在し、かつ左右の第１端（１７）及び第２端（１６ｂ）にて、前記リンク機構の枢支部に於ける互いに相対回転する第１の部分（１２）及び第２の部分（８）に結合されたトーションバー（１４）とを備える高さ調節可能な前記シートクッションを備えた車両用シートであって、前記トーションバーが、左右方向に延在する軸部（１５）、及び、前記第２端側に於いて少なくとも部分的に前記軸部に交差する方向に延出して前記第２の部分に結合された延長部（１６）を有し、前記第１の部分は、前記トーションバーの前記第１端を回転不能に支持し、前記トーションバーの前記軸部の前記第２端側を、前記トーションバーの軸芯の変位を抑制するための位置保持部材（２４，４１）を介して支持し、前記位置保持部材が、前記第１の部分に対して回転可能に支持され、前記軸部を挿通させる貫通孔（２７）を含む本体部（２５，４２）と、前記延長部に一体回転するように係合する係合部（２６，４３）とを有することを特徴とする。 The vehicle seat (1) according to at least some embodiments of the present invention includes a base member (2) supported by a vehicle body, a cushion frame (5) constituting a frame of the seat cushion (3), and the base. A link mechanism (6) that supports the cushion frame so as to be displaceable up and down with respect to a member, a drive mechanism (7) that drives the cushion frame in the vertical direction via the link mechanism, and the cushion frame upward. Extending between the left and right sides of the cushion frame to urge towards, and at the left and right first (17) and second (16b) ends, each other at the pivot of the link mechanism. A vehicle seat with the height-adjustable seat cushion having a torsion bar (14) coupled to a first portion (12) and a second portion (8) that rotate relative to each other. A shaft portion (15) extending in the left-right direction, and an extension extending at least partially on the second end side in a direction intersecting the shaft portion and coupled to the second portion. The first portion has a portion (16), which non-rotatably supports the first end of the torsion bar, and the second end side of the shaft portion of the torsion bar is the shaft of the torsion bar. The cushion frame and one of the link mechanisms are supported by a position holding member (24) for suppressing the displacement of the core, and one of the cushion frame and the link mechanism has a connecting member (12) that is rotatable with respect to the other. The connecting member constitutes the first portion, the position holding member has a main body portion (25) having a side peripheral wall including a tubular contour, and the main body portion is an inner hole (13) of the connecting member. ), The position-holding member is characterized in that a recess is provided on the outer peripheral surface of the main body portion.
In the vehicle seat according to at least some embodiments of the present invention, in the above configuration, the main body portion includes a through hole (27) through which the shaft portion is inserted, and the side peripheral wall has the through hole. It is characterized by having an inner peripheral wall (31) to be defined, an outer peripheral wall (32) supported by the first portion, and a plurality of reinforcing walls (33) connecting the inner peripheral wall and the outer peripheral wall. And.
The vehicle seat according to at least some embodiments of the present invention is characterized in that, in the above configuration, the reinforcing wall extends in the radial direction.
The vehicle seat according to at least some embodiments of the present invention is characterized in that, in the above configuration, the reinforcing wall is aligned with the recess in the radial direction.
Vehicle seat according to at least some embodiments of the present invention, in the any of the above construction, the recess provided in plurality, the circumferential length of at least one of said recesses, adjacent each other in a circumferential direction It is characterized in that it is longer than the circumferential distance between the two matching recesses.
In any of the above configurations, the vehicle seat according to at least some embodiments of the present invention has a collar portion (28) extending outward in the radial direction from the outer peripheral surface. , The recess is continuous with the collar.
In the vehicle seat according to at least some embodiments of the present invention, in the above configuration, the amount of the concave portion on the outer peripheral surface in the radial direction extends from the concave portion on the collar portion. It is characterized in that it is shorter than the radial extension length of the existing portion.
In any of the above configurations, the vehicle seat according to at least some embodiments of the present invention extends in the radial direction on the inner end face in the left-right direction so that the position-holding member can receive the extension portion. It is characterized by having a receiving groove (35) recessed so as to be present.
The vehicle seat (1) according to at least some embodiments of the present invention includes a base member (2) supported by a vehicle body, a cushion frame (5) constituting a frame of the seat cushion (3), and the base. A link mechanism (6) that supports the cushion frame so as to be displaceable up and down with respect to a member, a drive mechanism (7) that drives the cushion frame in the vertical direction via the link mechanism, and the cushion frame upward. Extending between the left and right sides of the cushion frame to urge towards, and at the left and right first (17) and second (16b) ends, each other at the pivot of the link mechanism. A vehicle seat with the height-adjustable seat cushion having a torsion bar (14) coupled to a first portion (12) and a second portion (8) that rotate relative to each other. A shaft portion (15) extending in the left-right direction, and an extension extending at least partially on the second end side in a direction intersecting the shaft portion and coupled to the second portion. The first portion has a portion (16), which non-rotatably supports the first end of the torsion bar, and the second end side of the shaft portion of the torsion bar is the shaft of the torsion bar. A through hole that is supported via a position holding member (24, 41) for suppressing the displacement of the core, the position holding member is rotatably supported with respect to the first portion, and the shaft portion is inserted therethrough. It is characterized by having a main body portion (25, 42) including (27) and an engaging portion (26, 43) that engages with the extension portion so as to rotate integrally.

図６に示すように、位置保持部材２４の円筒形状の本体部２５は、肉抜きされて２層構造となっており、貫通孔２７を画成する内周壁３１と、連結パイプ１２の内孔１３を画成する内周面に摺接して連結パイプ１２に回転可能に支持される外周壁３２と、半径方向に延在して内周壁３１及び外周壁３２間を連結する複数の補強壁３３とを有する。位置保持部材２４が連結パイプ１２に対して軸線回りに回転するときの摩擦抵抗を減らすため、外周壁３２の外周面には軸線方向に沿って複数のリブ３４が設けられ、リブ３４が連結パイプ１２の内周面に摺接する。複数のリブ３４は、トーションバー１４からの横力を受ける側の所定の範囲に渡って、周方向に略等間隔に配置される。複数の補強壁３３は、周方向に略等間隔に配置され、リブ３４が設けられた側に位置する補強壁３３は、半径方向においてリブ３４と整合し、そのため、トーションバー１４からの横力に対する補強が効率的となる。複数のリブ３４の間はリブ３４に対して凹部となっている。 As shown in FIG. 6, the cylindrical main body 25 of the position holding member 24 is lightened to have a two-layer structure, and the inner peripheral wall 31 defining the through hole 27 and the inner hole of the connecting pipe 12 are formed. An outer peripheral wall 32 that is slidably contacted with an inner peripheral surface defining 13 and is rotatably supported by a connecting pipe 12, and a plurality of reinforcing walls 33 that extend in the radial direction and connect between the inner peripheral wall 31 and the outer peripheral wall 32. And have. In order to reduce the frictional resistance when the position holding member 24 rotates about the axis with respect to the connecting pipe 12, a plurality of ribs 34 are provided on the outer peripheral surface of the outer peripheral wall 32 along the axial direction, and the ribs 34 are connected pipes. It is in sliding contact with the inner peripheral surface of 12. The plurality of ribs 34 are arranged at substantially equal intervals in the circumferential direction over a predetermined range on the side receiving the lateral force from the torsion bar 14. The plurality of reinforcing walls 33 are arranged at substantially equal intervals in the circumferential direction, and the reinforcing walls 33 located on the side where the ribs 34 are provided are aligned with the ribs 34 in the radial direction, so that the lateral force from the torsion bar 14 is obtained. Reinforcement against is efficient. The ribs 34 are recessed with respect to the ribs 34.

Claims

The base member supported by the car body and
The cushion frame that makes up the seat cushion frame and
A link mechanism that supports the cushion frame in a vertically displaceable manner with respect to the base member,
A drive mechanism that drives the cushion frame in the vertical direction via the link mechanism, and
In order to urge the cushion frame upward, it extends between the left and right side portions of the cushion frame, and at the left and right first and second ends, each other at the pivot portion of the link mechanism. A vehicle seat with the height-adjustable seat cushion with a first portion that rotates relative to each other and a torsion bar coupled to the second portion.
A shaft portion extending in the left-right direction and an extension portion extending in a direction in which the torsion bar extends in a direction that at least partially intersects the shaft portion on the second end side and is coupled to the second portion. Have,
The first portion non-rotatably supports the first end of the torsion bar, and the second end side of the shaft portion of the torsion bar is used to suppress displacement of the shaft core of the torsion bar. Supported via a position holding member,
One of the cushion frame and the link mechanism has a connecting member that is rotatable with respect to the other.
The connecting member constitutes the first portion,
The position-holding member has a main body portion having a side peripheral wall including a tubular contour, and the main body portion is received by an inner hole of the connecting member.
A vehicle seat characterized in that a recess is provided on the outer peripheral surface of the main body of the position holding member.

The main body portion includes a through hole through which the shaft portion is inserted.
The side peripheral wall is characterized by having an inner peripheral wall defining the through hole, an outer peripheral wall supported by the first portion, and a plurality of reinforcing walls connecting the inner peripheral wall and the outer peripheral wall. The vehicle seat according to claim 1.

The vehicle seat according to claim 2, wherein the reinforcing wall extends in the radial direction.

The vehicle seat according to claim 3, wherein the reinforcing wall does not align with the recess in the radial direction.

A plurality of the recesses are provided,
The vehicle according to any one of claims 1 to 4, wherein the length of at least one of the recesses in the circumferential direction is longer than the distance of the two recesses adjacent to each other in the circumferential direction in the circumferential direction. Sheet for.

The main body portion has a collar portion extending outward in the radial direction from the outer peripheral surface.
The vehicle seat according to any one of claims 1 to 5, wherein the recess is continuous with the collar portion.

The sixth aspect of claim 6, wherein the amount of the concave portion extending in the radial direction on the outer peripheral surface is shorter than the radial extension length of the portion extending from the concave portion in the flange portion. Vehicle seats.

Any of claims 1 to 7, wherein the position-holding member has a receiving groove recessed so as to extend in the radial direction so as to be able to receive the extension portion on the inner end surface in the left-right direction. The vehicle seat described in paragraph 1.