Seat back structure of vehicle seat
First Claim
1. A seat back structure of vehicle seat, in which the seat back has one side to supportively receive a back of an occupant on the vehicle seat and another side opposite to said one side, comprising:
- an elastic back support means provided in said one side of said seat back, said elastic back support means being adapted for resiliently supporting the back of said occupant;
a back board means provided in said another side of said seat back, said back board means having;
one side facing to said one side of said seat back; and
another side facing to said another side of said seat back;
a movable connection means for connecting said elastic back support means and said back board means with said seat back so as to allow displacement of the back board means in a direction from a home position to one of said one and another sides of said seat back, while allowing the elastic back support means to be resiliently warped in a direction to said one of said one and another sides of said seat back;
a stopper means for preventing movement of said back board means from said home position toward said one side of said seat back, and a biasing means for normally biasing said back board means to said home position;
wherein said back board means is retained by said stopper means at said home position, thereby withstanding a first load applied to said another side of the back board means and allowing the back board means to be usable as a means for carrying load and cargo thereon, and wherein, by contrast, when a second load is applied in a direction to said one side of the seat back, said elastic back support means is resiliently warped toward said one side of said back board means, which in turn causes the back board means to displace toward said another side of said seat back against a biasing force of said biasing means, so that both said elastic back support means and said back board means are resiliently displaced toward said another side of said seat back.
1 Assignment
0 Petitions
Accused Products
Abstract
A seat back structure of vehicle seat which is reduced in thickness and yet deformable to provide a deep cushiony touch to a back of passenger. According thereto, an elastic back support element and a back board element are respectively provided in one and another sides of seat back, and a movable connection element is provided so as to allow displacement of the back board element from a home position, while allowing the elastic back support element to be resiliently warped. The back board element is normally biased by a biasing element of the home position. A stopper element is defined in the seat back for preventing movement of the back board element from the home position to the elastic back support element. The back board element per se may be formed by a plurality of plate elements connected movably with one another.
74 Citations
14 Claims
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1. A seat back structure of vehicle seat, in which the seat back has one side to supportively receive a back of an occupant on the vehicle seat and another side opposite to said one side, comprising:
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an elastic back support means provided in said one side of said seat back, said elastic back support means being adapted for resiliently supporting the back of said occupant;
a back board means provided in said another side of said seat back, said back board means having;
one side facing to said one side of said seat back; and
another side facing to said another side of said seat back;
a movable connection means for connecting said elastic back support means and said back board means with said seat back so as to allow displacement of the back board means in a direction from a home position to one of said one and another sides of said seat back, while allowing the elastic back support means to be resiliently warped in a direction to said one of said one and another sides of said seat back;
a stopper means for preventing movement of said back board means from said home position toward said one side of said seat back, and a biasing means for normally biasing said back board means to said home position;
wherein said back board means is retained by said stopper means at said home position, thereby withstanding a first load applied to said another side of the back board means and allowing the back board means to be usable as a means for carrying load and cargo thereon, and wherein, by contrast, when a second load is applied in a direction to said one side of the seat back, said elastic back support means is resiliently warped toward said one side of said back board means, which in turn causes the back board means to displace toward said another side of said seat back against a biasing force of said biasing means, so that both said elastic back support means and said back board means are resiliently displaced toward said another side of said seat back. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification