Power sliding apparatus of conveyance seat
View Patent ↗In right and left upper rails in a power sliding apparatus of a conveyance seat, openings to receive gear boxes are formed, respectively. The gear boxes are attached to the right and left upper rails via the openings, respectively. The opening in one of the right and left upper rails is closed with a motor fixing bracket to fix a motor unit.
1. A power sliding apparatus of a conveyance seat comprising:
right and left upper rails, each upper rail including an opening;
right and left lower rails;
a motor unit which is fixed to one of the right and left upper rails;
a motor fixing bracket to fix the motor unit to the one upper rail; and
transmission shafts and gear boxes to transmit a rotational force of a motor of the motor unit to one of ball screws and ball nuts attached to at least one of the lower rails and the upper rails, wherein
when the rotational force of the motor is transmitted to the one of the ball screws and the ball nuts, the right and left upper rails slide relatively to the right and left lower rails,
the gear boxes are received in and attached to the right and left upper rails via the openings, respectively,
the opening in the one upper rail is closed by the motor fixing bracket, and
the gear box of the one upper rail is attached via the opening of the one upper rail at a position below a face of the motor fixing bracket that closes the opening of the one upper rail.
2. The power sliding apparatus of the conveyance seat according to claim 1 , further comprising:
a reinforcing bracket which closes the opening in the other upper rail,
wherein the motor fixing bracket is fastened to the reinforcing bracket.
3. The power sliding apparatus of the conveyance seat according to claim 2 ,
wherein the motor fixing bracket is integral with the reinforcing bracket to serve as the reinforcing bracket.
4. The power sliding apparatus of the conveyance seat according to claim 1 ,
wherein the motor unit is fixed to the motor fixing bracket via an attaching bracket secured to the motor, and
an edge of the attaching bracket is attached to the motor fixing bracket by bent attaching pieces of the motor fixing bracket.
5. The power sliding apparatus of the conveyance seat according to claim 1 ,
wherein the motor fixing bracket closes the opening of the one upper rail by covering a plane spanning the opening of the one upper rail.
6. The power sliding apparatus of the conveyance seat according to claim 5 ,
wherein the plane is defined by a top surface of the one upper rail.
7. The power sliding apparatus of the conveyance seat according to claim 1 ,
wherein a lower surface of the motor fixing bracket faces the one upper rail to close the opening of the one upper rail.