To provide a seat lifter structure capable of preventing a seat back from falling forward even when a great force is applied forward to a seat back, by maintaining engagement between a gear of a sector and a pinion of a brake unit.SOLUTION: A seat lifter structure ascends/descends a side frame (2) incorporated in a cushion seat (ST1) with respect to a fixing member (61) so as to ascend/descend the cushion seat (ST1). The seat lifter structure comprises: a brake unit (8) which includes a pinion (8b) and which is attached to the side frame (2); a sector (7) which is rotatably supported at a first support part (7b1) with respect to the fixing part (61), also rotatably supported through a second support part (7k2) with respect to the side frame (2), includes a gear part (7a) meshed with the pinion (8b), and is oppositely juxtaposed to the side frame (2); and a spacer 10 which includes a first surface (10kb) facing the side frame (2) and a second surface (10ka) facing the sector (7), and is interposed between the side frame (2) and the sector (7).SELECTED DRAWING: Figure 3
【課題】シートバックに対して前方への大きな力が付与されても、セクタのギヤとブレーキユニットのピニオンとの歯合を維持しシートバックの前方への倒れ込みを防止できるシートリフタ構造を提供する。【解決手段】クッションシート(ST1)に内蔵されたサイドフレーム(2)を、固定部材(61)に対し昇降させてクッションシート(ST1)を昇降させる。ピニオン(8b)を有しサイドフレーム(2)に取り付けられたブレーキユニット(8)と、第1の支持部(7b1)で固定部材(61)に対し回動可能に支持されると共に第2の支持部(7k2)と介してサイドフレーム(2)に対し回動可能に支持され、ピニオン(8b)に歯合するギヤ部(7a)を有しサイドフレーム(2)に対して対向並設されたセクタ(7)と、サイドフレーム(2)に対向する第1の面(10kb)とセクタ(7)に対向する第2の面(10ka)とを有してサイドフレーム(2)とセクタ(7)との間に介装されたスペーサ(10)と、を備えた。【選択図】図3
SEAT LIFTER STRUCTURE AND SEAT FOR VEHICLE WITH 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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