Power seat slide device and vehicle seat
AssigneeDelta Tooling Co., Ltd.
InventorsEtsunori Fujita, Yumi Ogura, Katsuhiro Inoue, Terumi Asai, Shinji Nishimoto
Life of this patent
Estimating the term…
Abstract
A power seat slide device capable of changing not only to an electric operation but also to an manual operation, and preventing half-lock in spite of a manually operable structure. For front-rear movement, a rack attached to a lower rail and a pinion meshed with the rack are used, and a driving force of a motor is transmitted to the pinion, which enables the use in an electric mode. As no slide screw is used, while the motor is not energized, rotating the pinion causes an output shaft of the motor to rotate, so that manual adjustment becomes possible.
Claims20
A power seat slide device which adjusts a pair of sliders arranged at a predetermined interval by a driving force of a motor to adjust a position of a seat cushion in a front-rear direction in a vehicle seat,
- the pair of sliders each comprising:
- a lower rail fixed to a floor of the vehicle seat, with a longitudinal direction of the lower rail being along the front-rear direction of the seat cushion;
- an upper rail disposed to be movable along the longitudinal direction of the lower rail and supporting a cushion frame of the seat cushion;
- and
- a lock mechanism which locks the upper rail to the lower rail at an appropriate slide position, the device further comprising:
- a rack disposed along the longitudinal direction of the lower rail;
- and
- a pinion which is supported on the upper rail or the cushion frame, is meshed with the rack, and rotates by the driving force of the motor being transmitted thereto,
- wherein, while the motor is energized, the motor is actuated in conjunction with a release operation of the lock mechanisms to rotate the pinion to cause front-rear movement of the upper rails along the lower rails,
- wherein, while the motor is not energized, the front-rear movement of the upper rails along the lower rails is enabled by manual adjustment, and
- wherein the lock mechanisms are disposed on both sides of each of the upper rails, and the lock mechanisms perform the locking by engaging with the lower rails, and the motor is actuated in conjunction with the release operation of the lock mechanisms to rotate the pinion to cause the front-rear movement of the upper rails along the lower rails.
The power seat slide device according to 11,
- wherein the cam has cam-side tapered surfaces on a peripheral surface, and the plates have plate-side tapered surfaces facing the cam-side tapered surfaces;
- and
- wherein either the cam-side tapered surfaces or the plate-side tapered surfaces are formed in a mountain shape and the others are formed in a valley shape, and in a positional relation in which apex portions and bottom portions face each other, the input-side teeth parts are at a non-meshed position where the input-side teeth parts are apart from the output-side teeth part, and when the apex portions and the bottom portions are separated from facing positions along the cam-side tapered surfaces or the plate-side tapered surfaces by the rotation of the drive shaft, the input-side teeth parts and the output-side teeth part are at a meshed position.
A power seat slide device which adjusts a pair of sliders arranged at a predetermined interval by a driving force of a motor to adjust a position of a seat cushion in a front-rear direction in a vehicle seat,
- the pair of sliders each comprising:
- a lower rail fixed to a floor of the vehicle seat, with a longitudinal direction of the lower rail being along the front-rear direction of the seat cushion;
- an upper rail disposed to be movable along the longitudinal direction of the lower rail and supporting a cushion frame of the seat cushion;
- and
- a lock mechanism which locks the upper rail to the lower rail at an appropriate slide position, the device further comprising:
- a rack disposed along the longitudinal direction of the lower rail;
- and
- a pinion which is supported on the upper rail or the cushion frame, is meshed with the rack, and rotates by the driving force of the motor being transmitted thereto,
- wherein, while the motor is energized, the motor is actuated in conjunction with a release operation of the lock mechanisms to rotate the pinion to cause front-rear movement of the upper rails along the lower rails, and
- wherein, while the motor is not energized, the front-rear movement of the upper rails along the lower rails is enabled by manual adjustment.
Dependencies are inferred from the claim text.