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1. 发明授权

US4949585A Telescopic screw jack for the adjustment of an element such as a vehicle seat 失效
标题翻译：用于调整诸如车辆座椅的元件的伸缩式螺丝千斤顶
公开(公告)号：US4949585A
公开(公告)日：1990-08-21
申请号：US270972
申请日：1988-11-14
申请人： Jean L. Dauvegne , Claude Chevance , Bruno Laurent
发明人： Jean L. Dauvegne , Claude Chevance , Bruno Laurent
IPC分类号： B60S9/06 , B60N2/02 , B66F3/12 , F16H25/20 , F16H25/24
CPC分类号： F16H25/20 , B60N2/0224 , B60N2002/0236 , F16H2025/2084 , F16H2025/209 , Y10T74/18672 , Y10T74/18792
摘要： The jack comprises a tubular primary screw (10) provided with an outer screw thread and an inner screw thread having opposite thread hands, a secondary screw (11) cooperative with the inner screw thread and having an end (11a) articulated to a fixed point, a nut (9) fixed in rotation and connected to move in translation with the element to be adjusted and cooperative with the outer screw thread, a speed reducer associated with a motor (M) for driving the primary screw (10) in rotation, and means for preventing a rotation of the speed reducer (13) relative to the nut (9). These means comprise an articulated compass structure (18) having two branches (18a, 18b) articulated together. One of the branches is also articulated to the speed reducer (13) while the other branch is articulated to a part (9) of the jack which is fixed in rotation. The compass structure (18) considerably reduces the friction and improves the efficiency of the jack.
摘要翻译：千斤顶包括一个设置有外螺纹的管状主螺钉（10）和具有相对的螺纹针的内螺纹，与内螺纹配合的辅助螺钉（11），其具有铰接到固定点，固定在旋转中的螺母（9），与被调节的元件平行移动并与外螺纹协调;与用于驱动主螺杆（10）旋转的马达（M）相关联的减速器，以及用于防止减速器（13）相对于螺母（9）旋转的装置。这些装置包括具有铰接在一起的两个分支（18a，18b）的铰接罗盘结构（18）。其中一个分支也铰接到减速器（13），而另一分支铰接到旋转固定的千斤顶的部分（9）上。罗盘结构（18）大大降低了摩擦力并提高了千斤顶的效率。

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