The present disclosure provides a gearbox for a vehicle seat capable of suppressing an increase in sliding resistance at an end of a shaft and capable of suppressing rattling of the shaft. One aspect of the present disclosure relates to a gearbox for a vehicle seat for a movable mechanism of a vehicle seat. The gearbox is provided with: a housing that accommodates a shaft, a gear, and a swivel bearing, and that has a female screw part; a thrust bearing having an active portion in contact with the end of the shaft, a male thread portion screwed with the female thread portion, and an engaged portion disposed at a position sandwiching the male thread portion in the axial direction of the shaft together with the active portion; and a cover portion having an engagement portion that engages with the engaged portion of the thrust bearing, and a retaining portion that restricts the thrust bearing from disengaging from the housing.
本公开提供一种能够抑制轴的端部处的滑动阻力的增加且能够抑制轴的晃动的交通工具座椅用齿轮箱。本公开的一个方案涉及一种用于交通工具座椅的可动机构的交通工具座椅用齿轮箱。齿轮箱具备:壳体,壳体收容轴、齿轮以及旋转轴承,并且具有内螺纹部;推力轴承,推力轴承具有作用部、外螺纹部和被卡合部,作用部与轴的端部接触,外螺纹部与内螺纹部螺合,被卡合部配置在与作用部一起在轴的轴向上夹着外螺纹部的位置;以及盖部,盖部具有卡合部和止脱部,卡合部与推力轴承的被卡合部卡合,止脱部限制推力轴承从壳体脱离。
Gearbox for vehicle seat
交通工具座椅用齿轮箱
2023-12-08
Patent
Electronic Resource
Chinese