A vehicle seat includes a seatback that supports a back of a seated occupant from a seat rear side, a back frame that configures a framework of the seatback and that includes an insertion portion, and a lumbar support that is arranged at a position facing a lumbar region of the seated occupant in a seat front-rear direction within the seatback. The vehicle seat includes a wire that extends from the lumbar support toward an insertion portion side and that is anchored at the insertion portion in a state of being inserted into the insertion portion. A notch that is directly or indirectly anchored at an edge of the insertion portion when the lumbar support is pressed toward the seat rear side is formed at the wire.

It is provided a crash device, in particular for a vehicle seat, comprising: a first and a second bearing point for connecting one component each, and a carrier on which the first bearing point is formed and which includes a guide for guiding a movement of the second bearing point relative to the first bearing point, wherein in a starting position the second bearing point is arrested by an arresting element which is locked by means of a locking device and after unlocking of the locking device can be plastically deformed by a movement of the second bearing point along the guide.

The present disclosure discloses a base, a holding mechanism, a crotch belt buckle receiving device and a child safety seat. The base is used for a child safety seat, and includes: a housing forming an appearance of the base; a base bracket accommodated in the housing; and an anchor assembly telescopically and pivotably connected to the base bracket and at least partially extending out of the housing. The holding mechanism enables a headrest to lean forward when being impacted by an external force. The crotch belt buckle receiving device is arranged in a seat portion of a seat body of the child safety seat. The child safety seat includes a seat body and a headrest. The base and the child safety seat provided by the present disclosure have good safety and convenient operation.

An adjustment device for a vehicle seat comprises a first assembly and a second assembly adjustable relative to the first assembly. A swivel element includes a toothed segment and a flat element connected to the toothed segment and is pivotable for adjusting the first assembly and the second assembly relative to each other. An adjustment drive includes a pinion element cooperating with the toothed segment, which can be driven pivot the swivel element. The toothed segment includes a support section, wherein the toothed segment is connected to the flat element on a first side of the deformation section, and the support section configured to support on the flat element on a second side of the deformation section and/or on one of the first assembly and the second assembly in the case of a deformation of the deformation section.

A seat on which an occupant of a vehicle is seated includes: a backrest that faces a back part of the occupant; a headrest provided in an upper part of the backrest; a backrest frame including side members that extend in an upward-downward direction along left and right side end parts of the backrest; a cross member provided to bridge the left and right side members and attached to the side members to be movable upward and downward; a headrest post that protrudes downward from the headrest and is coupled to the cross member; and a cross member detachment mechanism performs detachment of the cross member from the side members, in accordance with a load toward a rear side of the vehicle input to the cross member. The load triggering the detachment by the cross member detachment mechanism decreases as the cross member rises with respect to the side members.