US 9,809,135 B2
Vehicle seat with cable force reducer
Robert Elton, Ann Arbor, MI (US)
Assigned to FCA US LLC, Auburn Hills, MI (US)
Filed by Robert Elton, Ann Arbor, MI (US)
Filed on Aug. 28, 2015, as Appl. No. 14/838,654.
Prior Publication US 2017/0057382 A1, Mar. 2, 2017
Int. Cl. B60N 2/44 (2006.01); B60N 2/235 (2006.01)
CPC B60N 2/4435 (2013.01) [B60N 2/2356 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A vehicle seat comprising:
a seat base;
a movable backrest coupled to the seat base;
the vehicle seat having at least first and second backrest locking mechanisms, each backrest locking mechanism having a locked state and an unlocked state, the backrest locking mechanisms when both are in the unlocked state allowing the backrest to rotate relative to the seat base and when either backrest locking mechanism is in the locked state locking the backrest in a fixed position relative to the seat base;
a case having a first slot, the case fixedly mounted to one of the backrest and the seat base;
a pulley including a pulley wheel and a first pin, the pulley wheel disposed within the case and translatable longitudinally in the case, the first pin slidably received in the first slot and coupled to the pulley wheel for common translation with the pulley wheel with the first pin translating in the slot when the pulley wheel translates in the case;
an input cable having opposed ends, with one end a case attachment end that is fixedly coupled to the case and the other end a user input end that is configured to receive an input force from a user which pulls the input cable when the input force is received, the input cable extending around a portion of the pulley wheel; and
at least first and second output cables, each output cable having opposed ends with one end a pulley attachment end and the other end a backrest locking end, the pulley attachment end of each output cable is coupled to the pulley for common translation with the pulley, the backrest locking end of one of the output cables is coupled to one of the backrest locking mechanisms and the backrest locking end of the other output cable is coupled to the other backrest locking mechanism;
wherein the pulley and pulley attachment ends of the output cables translate longitudinally in the case in response to being pulled by the input cable when the input cable is pulled with the output cables pulling upon the backrest locking mechanisms to release the backrest locking mechanisms from their locked state to their unlocked state.