To provide a seat lifter structure which can obtain rotation of a sector with stable torques.SOLUTION: A seat lifter structure includes: a sector (7) supported to be rotatable by a support member (21), arranged to be facing with a side frame (2) by being pinched and fixed by a pair of expanded portions (6a and 6b) of a tubular shaft member (6) that is supported to be rotatable by the side frame (2), and rotating along the side frame (2) at a time of raising or lowering the side frame (2); a ring shaped spacer (13) having a first ring shaped abutting surface (13da) facing with the sector (7) and having a first outer diameter (φ13d2), and a second ring shaped abutting surface (13ca) facing with the side frame (2) and having a second outer diameter (φ13c2) different from the first outer diameter (φ13d2), which is installed between the sector (7) and the side frame (2) with an axial line (CL6) as a center; and a biasing member (12) that biases and abuts the sector (7) to the first abutting surface (13da) and biases and abuts the side frame (2) to the second abutting surface (13ca) by biasing the sector (7) and the side frame (2) to approach.SELECTED DRAWING: Figure 5
【課題】セクタの回動を安定したトルクで得られるシートリフタ構造を提供する。【解決手段】支持部材(21)に回動可能に支持されると共に、サイドフレーム(2)に回転可能に支持された管軸部材(6)の一対の膨出部(6a,6b)に挟持固定されてサイドフレーム(2)に対向配置され、サイドフレーム(2)の昇降時にサイドフレーム(2)に沿って回動するセクタ(7)と、セクタ(7)と対向し第1外径(φ13d2)を有する環状の第1当接面(13da)と、サイドフレーム(2)と対向し第1外径(φ13d2)と異なる第2外径(φ13c2)を有する環状の第2当接面(13ca)とを有し、軸線(CL6)を中心としてセクタ(7)とサイドフレーム(2)との間に介装された環状のスペーサ(13)と、セクタ(7)とサイドフレーム(2)とを接近付勢してセクタ(7)を第1当接面(13da)に付勢当接させサイドフレーム(2)を第2当接面(13ca)に付勢当接させる付勢部材(12)とを備えた。【選択図】図5
SEAT LIFTER STRUCTURE AND VEHICLE SEAT INCLUDING THE SAME
シートリフタ構造及びそれを備えた乗り物用シート
2019-09-19
Patent
Electronic Resource
Japanese
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