Vehicle seat
A vehicle seat having a backrest and a seat part, as well as at least one sidewall arranged on the backrest or on the seat part, the sidewall having two support portions that are coupled together, by a coupling means, and are movable relative to one another, between which support portions at least one hollow body that can be filled with fluid is arranged, the relative position of the two support portions with respect to one another, and thus the outside contour of the sidewall, being variable by filling or emptying the at least one hollow body. The coupling means is designed such that, upon filling or emptying of the at least one hollow body, the two support portions are variable relative to one another, both in translation and in their angular position.
1. A vehicle seat comprising a backrest, a seat part, as a return means ( 4 ), and at least one sidewall arranged on the backrest or on the seat part, the sidewall comprising two support portions ( 1 , 2 ) that are coupled together, by a coupling means ( 1 a , 2 a ), and are movable relative to one another, between which support portions at least one hollow body ( 3 a , 3 b ) that can be filled with fluid is arranged, the relative position of the two support portions ( 1 , 2 ) with respect to one another, and thus the outside contour of the sidewall, being variable by filling or emptying the at least one hollow body ( 3 a , 3 b ), wherein the coupling means ( 1 a , 2 a ) is designed such that, upon filling or emptying of the at least one hollow body ( 3 a , 3 b ), the two support portions ( 1 , 2 ) are variable relative to one another, both in translation and in their angular position, wherein the return means ( 4 ) is active between the two support portions ( 1 , 2 ), which return means ( 4 ) is tensioned upon filling of the at least one hollow body ( 3 a , 3 b ), and the return means ( 4 ) is a torsion spring in the form of a leg spring that is guided around the guided portion ( 1 b ) and comprises a first leg ( 4 a ) and a second leg ( 4 b ), the first leg ( 4 a ) resting on the second support portion ( 1 ), on the side remote from the hollow body ( 3 a , 3 b ) that can be filled with fluid, and the second leg ( 4 b ) being supported on the first support portion ( 2 ), on the side remote from the hollow body ( 3 a , 3 b ) that can be filled with fluid, or on the guide portion ( 2 a ).
2. The vehicle seat according to claim 1 , wherein the support portions ( 1 , 2 ) comprise plate-like contact portions, on which the at least one hollow body ( 3 a , 3 b ) is supported.
3. The vehicle seat according to claim 1 , further comprising a guide portion ( 2 a ) is arranged on a first support portion ( 2 ), and a portion ( 1 a) guided by the guide portion ( 2 a ) is arranged on another, second support portion ( 1 ).
4. The vehicle seat according to claim 3 , wherein the guided portion ( 1 a ) comprises a guide pin or a guide rod, and the guide portion comprises a guide groove or guide slide or guide receptacle, on or in which the guided portion is received.
5. The vehicle seat according to claim 3 , wherein the guide portion ( 2 a ) comprises a linear guide and/or an arcuate guide and/or a curved guide deviating from a linear course.
6. The vehicle seat according to claim 1 , wherein the hollow body or bodies ( 3 a , 3 b ) that can be filled with fluid is/are (a) pneumatically actuated balloon(s).
7. The vehicle seat according to claim 1 , wherein the first or the second support portion ( 2 , 1 ) is arranged so as to be stationary with respect to the motor vehicle seat.
8. The vehicle seat according to claim 1 , wherein the coupling means ( 1 a, 2 a ) comprises at least one joint.