PROBLEM TO BE SOLVED: To provide a lumber support device having a slider including a feed screw shaft and a female screw part screwed into the feed screw shaft, and adjusting the position of the lumber support by the advance and retreat of the slider in which there is little possibility of an occurrence of displacement between the feed screw shaft and an axial center of a nut member, and the operation is smooth.SOLUTION: A lumber support device includes: a base member 40 fixed to a seat frame 10; a drive part 50 fixed to the base member 40; a screw shaft 55 rotationally driven by the drive part 50; a slider 60 having a female screw part screwed into the screw shaft 55 that rectilinearly moves by the rotation of the screw shaft 55; and a mat member 30 having one end part held by the seat frame 10, and the other end pressed to the one end side by the slider 60 so as to be curved and deformed. The slider 60 is guided and supported by the base member 40 so as to rectilinearly move.SELECTED DRAWING: Figure 1
【課題】送りねじ軸と、該送りねじ軸に螺合する雌ねじ部を有するスライダを有し、該スライダの進退でランバーサポートの位置を調整するランバーサポート装置において、送りねじ軸とナット部材の軸心のずれが生じる可能性が低く、円滑に作動するランバーサポート装置を提供する。【解決手段】シートフレーム10に固定されるベース部材40と;該ベース部材40に固定される駆動部50と;上記駆動部50によって回転駆動されるねじ軸55と;上記ねじ軸55に螺合する雌ねじ部を有し、上記ねじ軸55の回転により直進移動するスライダ60と;一端部が上記シートフレーム10に保持され、他端部が上記スライダ60によって上記一端側へ押圧されることで湾曲変形するマット部材30と;を有し、上記スライダ60は上記ベース部材40に直進移動可能に案内支持されているランバーサポート装置。【選択図】図1
LUMBAR SUPPORT DEVICE
ランバーサポート装置
2016-05-09
Patent
Elektronische Ressource
Japanisch