Opening/closing body driving device
An opening/closing body driving device for driving an opening/closing body is provided. The opening/closing body driving device includes: a motor, having a rotation shaft; a screw shaft, being rotated by the rotation shaft; a moving nut, being screwed to the screw shaft and moved in an axial direction of the screw shaft; and a connection part, being provided at the moving nut, wherein an arm for opening and closing the opening/closing body is connected to the connection part. The rotation shaft and the screw shaft are respectively provided on the same axis, and the connection part is provided at a radially outer side of the screw shaft.
1. An opening/closing body driving device for driving an opening/closing body, and the opening/closing body driving device comprising:
a motor, having a rotation shaft;
a screw shaft, being rotated by the rotation shaft;
a moving nut, being screwed to the screw shaft and moved in an axial direction of the screw shaft;
a bracket member, being provided at the moving nut; and
a connection part, being provided at the moving nut through the bracket member, wherein an arm for opening and closing the opening/closing body is connected to the connection part,
wherein the rotation shaft and the screw shaft are respectively provided on the same axis, and
the connection part is provided at a radially outer side of the screw shaft.
2. The opening/closing body driving device according to claim 1 , wherein
a planetary gear speed reducer that reduces a rotation of the rotation shaft is provided between the rotation shaft and the screw shaft.
3. The opening/closing body driving device according to claim 1 , wherein
the opening/closing body is a trunk lid provided at rear of a vehicle, and
the rotation shaft is provided at a rear side of the vehicle with respect to the screw shaft.
4. The opening/closing body driving device according to claim 3 , wherein
when the trunk lid is closed, the moving nut is arranged at a first position close to the rotation shaft in the axial direction of the screw shaft,
when the trunk lid is opened, the moving nut is arranged at a second position distant from the rotation shaft with respect to the first position in the axial direction of the screw shaft.
5. The opening/closing body driving device according to claim 4 , wherein
the rotation shaft is rotatably accommodated in a motor case, and
an elastic member is provided between the motor case and the moving nut to urge the moving nut in a direction away from the motor case.
6. The opening/closing body driving device according to claim 2 , wherein
the opening/closing body is a trunk lid provided at rear of a vehicle, and
the rotation shaft is provided at a rear side of the vehicle with respect to the screw shaft.
7. The opening/closing body driving device according to claim 6 , wherein
when the trunk lid is closed, the moving nut is arranged at a first position close to the rotation shaft in the axial direction of the screw shaft,
when the trunk lid is opened, the moving nut is arranged at a second position distant from the rotation shaft with respect to the first position in the axial direction of the screw shaft.
8. The opening/closing body driving device according to claim 7 , wherein
the rotation shaft is rotatably accommodated in a motor case, and
an elastic member is provided between the motor case and the moving nut to urge the moving nut in a direction away from the motor case.
9. The opening/closing body driving device according to claim 4 , wherein
the bracket member comprises a fixed arm being bent toward the second position, and
the connection part is provided at the fixed arm.