Seat angle adjusting device and seat

Abstract

The invention discloses a seat angle adjusting device and a seat. The seat angle adjusting device disclosed by the invention comprises a ratchet cover plate, a chute plate, a slide block and a lockup cam, wherein the slide block is in sliding fit with a slide block slot of the chute plate, and the slide block slot extends in the radial direction of the chute plate; an outer ratchet which is engaged with the inner ratchet of the ratchet cover plate is formed at the outer end of the slide block, two steady surfaces at the inner ends of the slide block correspond with two support surfaces of the lockup cam; the two steady surfaces are positioned on two sides of a reference center section respectively; the reference center section passes through a preset rotating axis and is parallel to the extending direction of the slide block slot; and in a locking state, the slide block and the lockup cam form a first steady support surface and a second steady support surface, and a first crossing angle between the shortest connecting line of the edge far from the reference center section and the preset rotating axis on the first steady support surface and the reference center section is not more than 30 degrees. The seat angle adjusting device has the advantages of higher static lockup reliability and dynamic lockup reliability.

Description

technical field [0001] The invention relates to a seat adjustment technology, in particular to a seat angle adjustment device and a seat including the seat angle adjustment device. Background technique [0002] Currently, seat angle recliners include locking cores. The locking core part includes a ratchet plate, a chute plate and a slider; the ratchet plate is rotatably connected with the chute plate; The seat backs are connected; the chute plate is ring-shaped, and the slider is slidably installed on the chute plate, and can slide in the radial direction of the chute plate; the outer end of the slider forms an external ratchet that can engage with the internal ratchet A predetermined stable support surface is formed between the inner end of the slider and the locking cam, and the locking cam can drive the slider to slide radially through the stable support surface. In one state, the slider moves radially outward, the outer ratchet at the outer end of the slider meshes wit...

AI Technical Summary

Problems solved by technology

At the same time, the applicant realized that if the distance between the actual contact point of the first stable support surface S1 and the reference center section is too small, the stability of the slider cannot be guaranteed, and the occurrence of the inclination phenomenon of the slider cannot be reduced.

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