Seat angle regulator with double-cam structure

Abstract

The invention belongs to the technical field of automobile seats and relates to a seat angle regulator with a double-cam structure. The seat angle regulator comprises a gear ring, a guide plate, cams, a locking gear and a main control panel. The cams comprise the two U-shaped cams which are buckled in an intersecting mode. The adjacent buckling side faces of the two U-shaped cams and a shaft hole form a rotation angle or a moving gap, and the two U-shaped cams are opposite through the rotation angle or the moving gap. The outer side faces of the two side walls of each U-shaped cam are provided with concave-convex parts. The U-shaped cams rotate and drive the locking gear to move in the radial direction through the concave-convex parts so that an outer gear of the locking gear can be engaged with an inner gear on the gear ring in a locked mode. The seat angle regulator has the advantages that due to the fact that the two U-shaped cams can deflect or move relatively, a gap which is formed by superposition of errors caused by factors, such as the manufacturing tolerance, abrasion and locking force deflection, of products including the cams, the locking gear and the gear ring can be effectively counteracted, the effect that the locking strength meets the design requirement is guaranteed, and the seat angle regulator is suitable for high-strength seat angle regulators.

Description

technical field [0001] The invention belongs to the technical field of automobile seats, and particularly relates to a seat angle adjuster with a double-cam structure. Background technique [0002] A traditional recliner includes a ring gear, guide plate, cam and locking device. The ring gear has accommodating recesses on its inner surface, and inner gear teeth are formed at edge portions of the accommodating recesses. The guide plate is connected to the inner surface of the ring gear, and a plurality of guide blocks (guide blocks) protrude from the inner surface of the guide plate. The two opposing guide blocks define the locking device guide recess. Cam is placed between the guide plate and the ring gear, and Cam has a joystick rotating shaft in its center. External gear teeth are formed on the outer peripheral surface of each locking device. [0003] In the conventional recliner having the above structure, when the joystick rotating shaft is rotating, both ends of the...

AI Technical Summary

Problems solved by technology

[0006] The high-strength recliner of this type of structure generally uses 4 locking gears to ensure the strength, but it is very difficult to lock the 4 locking gears at the same time, because the manufacturing tolerances of products such as cam, locking gear and ring gear, etc. Wear, offset of locking force and other factors, especially when the cam is of one-piece structure, the unnecessary eccentric movement of the cam, at least one locking gear moves in the direction of the cam to contact with the cam, the ring gear and the locking The meshing gap of the gear becomes larger and the lock is not completely locked, the locking strength of the locking gear decreases, and the overall strength of the recliner decreases, which is likely to cause safety accidents

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