Reclining Adjuster
AssigneeDelta Tooling Co., Ltd.
InventorYutaka Sakamoto
Life of this patent
Estimating the term…
Abstract
A reclining adjuster has a lower bracket fixed to a seat cushion; an upper bracket fixed to a seatback and connected to the lower bracket so as to be rotatable about a shaft; a lock mechanism capable of having a locked state where rotation of the upper bracket relative to the lower bracket is locked and a released state where the lock is released; and an emergency lock mechanism for preventing relative rotation between the lock mechanism and the upper bracket when it occurs. In the emergency lock mechanism, when a cam projection of an outer toothed ring gear is pressed in the circumferential direction by a cam pin of a disk member by the relative rotation therebetween, the outer toothed ring gear meshes with both inner teeth of the lower bracket and inner teeth of the upper bracket.
Claims24
A reclining adjuster comprising:
- a first bracket, fixed to a seat cushion;
- a second bracket, rotatably connected to the first bracket and fixed to a seatback, such that changes in a reclining angle of the seatback relative to the seat cushion are possible;
- a lock mechanism, provided between the first bracket and the second bracket, and able to adopt a locked state retaining the second bracket at a given reclining angle relative to the first bracket, and to adopt a released state permitting changes to the angle of the second bracket relative to the first bracket;
- an engaging member provided to one or other of the first bracket or the second bracket so as to rotate integrally in the direction of changing the reclining angle;
- a first engageable portion, provided to the first bracket and engageable by the engaging member;
- a second engageable portion, provided to the second bracket and engageable by the engaging member;
- and
- an emergency lock actuation mechanism, provided between the second bracket and the lock mechanism, and when the lock mechanism is in the locked state and a relative rotation of a predetermined angle or greater is generated between the second bracket and the lock mechanism, the emergency lock actuation mechanism engaging the engaging member with each of the first engageable portion and the second engageable portion, and preventing the relative rotation.
A reclining adjuster comprising:
- a first bracket, fixed to a seat cushion;
- a second bracket, rotatably connected to the first bracket and fixed to a seatback, such that changes in a reclining angle of the seatback relative to the seat cushion are possible;
- a lockable member, provided on the second bracket so as to rotate integrally therewith relative to the first bracket;
- a lock member, that adopts a locked position in which it engages with the lockable member and locks rotation of the lockable member relative to the first bracket, and that adopts a released position that releases the engaging state and permits rotation of the lockable member relative to the first bracket;
- and
- a connecting member that connects the second bracket and the lockable member such that they do not move closer together or further apart in the rotational axial line direction relative to the first bracket.
A reclining adjuster comprising:
- a first bracket, fixed to a seat cushion;
- a second bracket, rotatably connected to the first bracket and fixed to a seatback, such that changes in a reclining angle of the seatback relative to the seat cushion are possible;
- a first gear that is rotatably axially supported at the first bracket through a shaft bearing;
- a second gear that is axially supported so as to be able to rotate around the axis integrally with the second bracket, and is able to drive the first gear by the rotation;
- a lock switching mechanism provided so that it is able to angularly displace the axial line of one or other of the first gear or the second gear, and is able to switch, by the angular displacement, between an unlocked state in which the first gear is able to be driven from the second gear side, and a locked state in which it is not possible for the first gear to be driven from the second gear side.
A reclining adjuster comprising:
- a pair of, left and right, lock mechanisms, respectively provided between a seatback and a seat cushion, and able to adopt a locked state in which the seatback is maintained at a given angle relative to the seat cushion, and able to adopt a released state in which changes in a reclining angle of the seatback relative to the seat cushion are permitted;
- a pair of, left and right, switching mechanisms, respectively provided to the lock mechanisms and switching the lock mechanisms between the locked state and the released state;
- and
- a coupling mechanism, coupling the left and right switching mechanisms such that the switching operation range of the switching mechanism on a driven side is greater than the switching operation range of the switching mechanism on a main driving side in each of the locking direction and the releasing direction.
Dependencies are inferred from the claim text.