Multi-driving assembly of vehicle power seat
AssigneeMitsuba Electric Manufacturing Co., Ltd.
InventorGensaku Yamakami
Life of this patent
Estimating the term…
Abstract
A multi-driving assembly of a vehicle power seat for adjusting forward and backward movement and height of the front and rear portions of the seat. At a left side of the motor shaft of an electric motor (central portion of a vehicle) where no wide space is secured, a first tightening member having no clutch is screwed to a first rotating screw shaft, which is provided with a first clutch to adjust forward and backward movement of the seat. At a right side (door side), second tightening members each having a second clutch provided therein are screwed to a second rotating screw shaft to adjust the height of the front and rear portions of the seat.
Claims11
A multi-driving assembly of a vehicle power seat for a plurality of operating mechanisms of the seat including at least a forward and backward moving mechanism for the seat and a vertical moving mechanism for front and rear portions of the seat, the multi-driving assembly comprising:
- a single electric motor;
- first and second rotatable screw shafts arranged substantially parallel with one another between said front and rear portions of the seat and rotated by a motor driving force from said electric motor;
- a first tightening member secured to said first rotatable screw shaft and connected to one of said plurality of operating mechanisms of the seat, said first rotatable screw shaft being arranged at a central portion of the vehicle;
- a second tightening member secured to said second rotatable screw shaft and connected to one of said plurality of operating mechanisms of the seat, said second rotatable screw shaft being arranged at a door side of the vehicle, wherein first and second clutches are provided in a power transmission path passing through said electric motor to each of said plurality of operating mechanisms of the seat in order to switch each of said plurality of operating mechanisms from a power-on state to a power-off state;
- said first clutch comprising;
- an intermediate gear operatively coupled with an output shaft of said electric motor, said first rotatable screw shaft rotatably passing through and coaxial with said intermediate gear;
- and
- a rotatable plunger axially movable between a first position and a second position, said plunger being selectively engageable at a first end with said intermediate gear in said first position for rotation with said intermediate gear, said first rotatable screw shaft being fixed to said rotatable plunger for rotation with said rotatable plunger.
A multi-driving assembly of a vehicle power seat for at least forward and backward movement of the seat and vertical movement of front and rear portions of the seat, the multi-driving assembly comprising:
- a single driving motor;
- a first rotatable screw shaft selectively operatively coupled to said motor;
- a first tightening member threadedly connected to said first rotatable screw shaft, said first tightening member fixed to a supporting body of the vehicle;
- a second rotatable screw shaft selectively operatively coupled to said motor;
- a second tightening member threadedly connected to said second rotatable screw shaft, said second tightening member fixed to at least one height adjustment mechanism;
- a first clutch disposed in a power transmission path between said motor and said first rotatable screw member, said first clutch engaging and disengaging said motor and said first rotatable screw member;
- a second clutch disposed in a power transmission path between said motor and said second rotatable screw member, said second clutch engaging and disengaging said motor and said second rotatable screw member;
- said first clutch comprising;
- an intermediate gear operatively coupled with an output shaft of said electric motor, said first rotatable screw shaft rotatably passing through and coaxial with said intermediate gear;
- and
- a rotatable plunger axially movable between a first position and a second position, said plunger being selectively engageable at a first end with said intermediate gear in said first position for rotation with said intermediate gear, said first rotatable screw shaft being fixed to said rotatable plunger for rotation with said rotatable plunger.
Dependencies are inferred from the claim text.