Vehicle seat

摘要

A vehicle seat suitable for weight reduction. A left and right side frames constituting a cushion frame unit are constituted of plate-shaped frames which are long in a forward and backward direction and formed of a thin material made of metal with a predetermined thickness or less, a plurality of beams are bridged across the side frames, and moreover, one or both of the side frames is or are supported on a seat slide device via a truss support part. In other words, the side frames disposed in a direction substantially orthogonal to the plurality of beams serve the role of stringers, and as a result, rigidity in the forward and backward direction of the side frames in particular is high rigidity of a predetermined value or more even if they are made of a thin material, and they can be reduced in weight.

主权项

1. A vehicle seat comprising:
a seat cushion part and a seat back part, wherein the seat cushion part has a cushion frame unit supporting a cushion member for the seat cushion part and the seat back part has a back frame unit supporting a cushion member for the seat back part, a left and right side frames constituting the cushion frame unit are coupled to and supported by a left and right sliders, respectively, constituting a seat slide device, and are each constituted of one or a plurality of plate-shaped frames long in a forward and backward direction and formed of a thin material made of metal with a predetermined thickness or less, a plurality of beams are bridged across the left and right side frames of the cushion frame unit, at least one of the left and right side frames is supported on the seat slide device via a truss support part receiving a force in the forward and backward direction, the truss support part being formed of a coupling support part with respect to the slider, the beams bridged across the left and right side frames, and an inter-node connecting part coupling the coupling support part and the beams in a direction substantially orthogonal to a disposition direction of the beams, coupling support parts for the left and right side frames and the left and right sliders are provided between a substantially center part and a rear edge in the forward and backward direction of the side frames, and the left and right coupling support parts are coupled by a first shaft member, and the truss support part is formed of
the first shaft member,two beams out of a plurality of beams disposed between the substantially center part and the rear edge in the forward and backward direction of the side frames, andinter-node connecting parts respectively connecting vicinities of respective ends of the two beams, and vicinities of ends of the first shaft member and the vicinities of respective ends of the two beams.