Height-regulating mechanism of vehicle seat

Abstract

The invention provides a height-regulating mechanism of a vehicle seat. The height-regulating mechanism of the vehicle seat comprises a first bidirectional overrunning clutch and a second bidirectional overrunning clutch which use a pusher dog disc in common. The first bidirectional overrunning clutch comprises a first transmission star wheel, the outer side surface of the first transmission star wheel comprises three sections of first arc surfaces and three sections of second arc surfaces which are arranged circumferentially at intervals, and one first arc surface and one second arc surface are connected through a first arc wedge surface. Springs are respectively arranged between one first arc surface and a circular groove wheel of the pusher dog disc, and two ends of each spring is provided with a roller which is clamped between the first arc wedge surface and the circular groove wheel. The second bidirectional overrunning clutch comprises a second transmission star wheel, the outer side surface of the second transmission star wheel comprises three sections of third arc surfaces and three sections of planes which are arranged circumferentially at intervals, and a third arc surface is connected with the planes through a second arc wedge surface. A pin roller which is clamped between the second arc wedge surface and the inner side surface of the output end shell under the function of an elastic element is arranged between each pusher dog of the pusher dog disc. The height-regulating mechanism of the vehicle is good in self-locking performance, stable in working performance, and high in control precision.

Description

technical field

[0001] The invention relates to the technical field of automobiles, in particular to an automobile seat height-adjusting mechanism. Background technique

[0002] In order to meet the human body positioning and comfort requirements of drivers and occupants of different heights and shapes in the car body, the height of the seat usually needs to be adjusted, which requires a height adjuster for the car seat. The car seat height adjusters in the prior art generally have defects such as easy damage and low control accuracy. For example, a height adjuster for a car seat height adjustment device disclosed in the utility model patent with the notification number CN201136447Y, the driving force input The end is to transmit torque through the first-stage overrunning clutch, and the handle is reset through the return spring, while the first-stage overrunning clutch and the handle are inserted into the first transmission star wheel through the stud on the handle for forc...

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