Seat back frame
First Claim
Patent Images
1. A seat back frame for a seat of a vehicle, the seat back frame comprising:
- a pair of side frames placed at a left side and a right side in a width direction of a seat;
an upper portion cross member disposed between an upper portion of the side frames;
a supporting plate extending between and interconnecting a lower portion of the side frames;
an upper opening defined between the side frames, the upper portion cross member, and the supporting plate and relatively above the supporting plate, the upper opening being opened in a front-rear direction;
a planar elastic body extending across the upper opening; and
a connection member elastically connecting a lower portion of the planar elastic body to an upper portion of the supporting plate;
wherein said planar elastic body is configured to have a lower rigidity as compared to said connection member such that, in the event of a rear end collision, said planar elastic body undergoes greater elastic deformation toward a rear side than does said connection member, andwherein the connection member comprises a wire member, said wire member being connected, at each end, to the side frames and, at an intermediate portion located between the ends, to the supporting plate.
1 Assignment
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Accused Products
Abstract
A seat back frame for a seat of a vehicle includes: a pair of side frames placed at a left side and a right side in a width direction of a seat; a head rest supporting frame supporting a head rest; a supporting plate, a both ends of the supporting plate being connected to a lower portion of each of the side frames; an upper opening provided above the supporting plate, the upper opening being opened in a front-rear direction; a planar elastic body provided across the upper opening; and a connection member elastically connecting a lower portion of the planar elastic body and an upper portion of the supporting plate.
39 Citations
9 Claims
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1. A seat back frame for a seat of a vehicle, the seat back frame comprising:
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a pair of side frames placed at a left side and a right side in a width direction of a seat; an upper portion cross member disposed between an upper portion of the side frames; a supporting plate extending between and interconnecting a lower portion of the side frames; an upper opening defined between the side frames, the upper portion cross member, and the supporting plate and relatively above the supporting plate, the upper opening being opened in a front-rear direction; a planar elastic body extending across the upper opening; and a connection member elastically connecting a lower portion of the planar elastic body to an upper portion of the supporting plate; wherein said planar elastic body is configured to have a lower rigidity as compared to said connection member such that, in the event of a rear end collision, said planar elastic body undergoes greater elastic deformation toward a rear side than does said connection member, and wherein the connection member comprises a wire member, said wire member being connected, at each end, to the side frames and, at an intermediate portion located between the ends, to the supporting plate. - View Dependent Claims (2, 3, 4, 5)
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6. A seat back frame for a seat of a vehicle, the seat back frame comprising:
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a pair of side frames placed at a left side and a right side in a width direction of a seat; an upper portion cross member disposed between an upper portion of the side frames; a supporting plate extending between and interconnecting a lower portion of the side frames; an upper opening defined between the side frames, the upper portion cross member, and the supporting plate and relatively above the supporting plate, the upper opening being opened in a front-rear direction; a planar elastic body extending across the upper opening; and a connection member elastically connecting a lower portion of the planar elastic body to an upper portion of the supporting plate, wherein said planar elastic body is configured to have a lower rigidity as compared to said connection member such that, in the event of a rear end collision, said planar elastic body undergoes greater elastic deformation toward a rear side than does said connection member, the connection member includes a wire member connected to the pair of side frames, the wire member being elongated along the width direction of the seat, a hook is provided to the supporting plate, the hook latching with the wire member, the wire member includes; a latching part formed in a crank shape, both ends of the latching part being elongated upwards, and the latching part being latched to the hook; and an elongating part elongated along the width direction of the seat, and the planar elastic body is connected to the elongating part. - View Dependent Claims (7, 8, 9)
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Specification