Abstract: A skeletal structure is provided that includes a panel, and a frame joined to a front surface side of the panel. The frame includes a plurality of first frames oriented in a fixed direction and a second frame oriented in a direction orthogonal to the plurality of first frames, and each of the plurality of first frames and the second frame are formed to have an open cross-sectional shape. An end portion of each first frame of the plurality of first frames is joined to the second frame in an overlapping state.

Abstract: A skeletal structure is provided that includes a panel, and a frame joined to a front surface side of the panel. The frame includes a plurality of first frames oriented in a fixed direction and a second frame oriented in a direction orthogonal to the plurality of first frames, and each of the plurality of first frames and the second frame are formed to have an open cross-sectional shape. An end portion of each first frame of the plurality of first frames is joined to the second frame in an overlapping state.

Abstract: A skeletal structure is provided that includes a panel, and a frame joined to a front surface side of the panel. The frame includes a plurality of first frames oriented in a fixed direction and a second frame oriented in a direction orthogonal to the plurality of first frames, and each of the plurality of first frames and the second frame are formed to have an open cross-sectional shape. An end portion of each first frame of the plurality of first frames is joined to the second frame in an overlapping state.

Abstract: A skeletal structure is provided that includes a panel, a first frame joined to a front surface side of the panel, and a plurality of reinforcing structure sections. The plurality of reinforcing structure sections are surrounded by primary beads and divided into subsections by auxiliary beads. The plurality of reinforcing structure sections are also formed on the panel and each of the primary beads bulges into a ridge shape.

Abstract: A seat back structure includes, a seat back frame which includes a panel material and a frame material joined with the panel material; a side frame which is included in the frame material and which is positioned in at least one edge side in a width direction of the panel material; and a first vulnerable portion which is formed in the side frame and which deforms when a load from an impact is applied. The first vulnerable portion is a slit formed by cutting out the side frame in a horizontal direction.

Abstract: A skeletal structure is provided that includes a panel, a first frame joined to a front surface side of the panel, and a plurality of reinforcing structure sections. The plurality of reinforcing structure sections are surrounded by primary beads and divided into subsections by auxiliary beads. The plurality of reinforcing structure sections are also formed on the panel and each of the primary beads bulges into a ridge shape.

Abstract: A seat back structure includes, a seat back frame which includes a panel material and a frame material joined with the panel material; a side frame which is included in the frame material and which is positioned in at least one edge side in a width direction of the panel material; and a first vulnerable portion which is formed in the side frame and which deforms when a load from an impact is applied. The first vulnerable portion is a slit formed by cutting out the side frame in a horizontal direction.

Abstract: A skeletal structure including: a panel; and a frame which is joined to a front surface side of the panel, wherein the frame includes a plurality of first frames oriented in a fixed direction and a second frame oriented in a direction orthogonal to the first frame, the first frame and the second frame are formed to have an open cross-sectional shape, each of the first frame and the second frame includes an opposing wall facing the panel and a pair of side walls rising from both side portions of the opposing wall toward the panel, the plurality of first frames includes joint portions and non-joint portions to the panel along a longitudinal direction of the first frames, and the non-joint portions of all the first frames are arranged at positions matching or overlapping with each other with respect to the longitudinal direction of the first frames.

Abstract: A skeletal structure including: a panel; and a frame which is joined to a front surface side of the panel, wherein the frame includes a plurality of first frames oriented in a fixed direction and a second frame oriented in a direction orthogonal to the first frame, the first frame and the second frame are formed to have an open cross-sectional shape, each of the first frame and the second frame includes an opposing wall facing the panel and a pair of side walls rising from both side portions of the opposing wall toward the panel, the plurality of first frames includes joint portions and non-joint portions to the panel along a longitudinal direction of the first frames, and the non-joint portions of all the first frames are arranged at positions matching or overlapping with each other with respect to the longitudinal direction of the first frames.

Abstract: A vehicle seat including a seat cushion, a seat back, a seat belt, and a seat belt retractor is provided. The vehicle seat includes: a seat back frame comprising: right and left side frames disposed at a distance away from each other in a lateral direction; an upper frame connecting upper end portions of the right side frame and the left side frame; a lower frame connecting lower end portions of the right side frame and the left side frame; and a connecting frame made of a pipe member and disposed at distances away from the right and left side frames and connecting the upper frame and the lower frame; and a first bracket by which the seat belt retractor is attached to the seat back frame. The first bracket is provided on the connecting frame at distances away from the upper frame and the lower frame.

Abstract: A skeletal structure including: a panel; and a frame which is joined to a front surface side of the panel, wherein the frame includes a plurality of first frames oriented in a fixed direction and a second frame oriented in a direction orthogonal to the first frame, the first frame and the second frame are formed to have an open cross-sectional shape, each of the first frame and the second frame includes an opposing wall facing the panel and a pair of side walls rising from both side portions of the opposing wall toward the panel, the plurality of first frames includes joint portions and non-joint portions to the panel along a longitudinal direction of the first frames, and the non-joint portions of all the first frames are arranged at positions matching or overlapping with each other with respect to the longitudinal direction of the first frames.

Abstract: A vehicle seat including a seat cushion, a seat back, a seat belt, and a seat belt retractor is provided. The vehicle seat includes: a seat back frame comprising: right and left side frames disposed at a distance away from each other in a lateral direction; an upper frame connecting upper end portions of the right side frame and the left side frame; a lower frame connecting lower end portions of the right side frame and the left side frame; and a connecting frame made of a pipe member and disposed at distances away from the right and left side frames and connecting the upper frame and the lower frame; and a first bracket by which the seat belt retractor is attached to the seat back frame. The first bracket is provided on the connecting frame at distances away from the upper frame and the lower frame.