Vehicle seat
First Claim
1. A vehicle seat, comprising:
- a frame;
a seat connected to said frame and having a seat cushion;
a backrest connected to said frame and having a backrest cushion that includes a buttocks-contact portion and a shoulder-contact portion; and
a backrest damping element, whereineach of the seat cushion and the backrest cushion comprises a plurality of cells, each of the plurality of cells having a spring element which is configured to be compressed in a pressing direction of the seated occupant and to be extended in a direction opposite to the pressing direction so as to dampen compression and extension of the corresponding cell, andthe backrest damping element is formed by superposing the seat cushion and backrest cushion to each other by sewing threads or a semi-welded portion, such that the sewing threads break or the semi-welded portion peels apart when a predetermined impact force is applied from the back toward the front, thus causing the buttocks-contact portion to expand and allowing a waist portion of the seated occupant to sink downward, thereby damping the impact force on the seated occupant.
2 Assignments
0 Petitions
Accused Products
Abstract
An upper end portion of a seat backrest and a lower end portion of a head rest are superposed together. A rear end portion of an upper portion cushion member and a lower end portion of the seat backrest are superposed together. These superposed portions are sewn together by thin threads which break when pressing force of a predetermined value or greater is applied to the seat backrest. Thus, when pressing force of the predetermined value or greater is applied to the seat backrest, the thin threads break. A portion of the seat backrest which a shoulder portion of a seated occupant contacts, and a portion of the seat backrest which buttocks of the seated occupant contact, are enlarged, and impact force can be damped.
21 Citations
13 Claims
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1. A vehicle seat, comprising:
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a frame; a seat connected to said frame and having a seat cushion; a backrest connected to said frame and having a backrest cushion that includes a buttocks-contact portion and a shoulder-contact portion; and a backrest damping element, wherein each of the seat cushion and the backrest cushion comprises a plurality of cells, each of the plurality of cells having a spring element which is configured to be compressed in a pressing direction of the seated occupant and to be extended in a direction opposite to the pressing direction so as to dampen compression and extension of the corresponding cell, and the backrest damping element is formed by superposing the seat cushion and backrest cushion to each other by sewing threads or a semi-welded portion, such that the sewing threads break or the semi-welded portion peels apart when a predetermined impact force is applied from the back toward the front, thus causing the buttocks-contact portion to expand and allowing a waist portion of the seated occupant to sink downward, thereby damping the impact force on the seated occupant. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification