Motor having rotatable shaft coupled with worm shaft
AssigneeAsmo Co., Ltd.
InventorsTakenobu Kawakami, Keijiro Suzuki, Toshiyuki Masuda, Kouji Shibata
Life of this patent
Estimating the term…
Abstract
A driving-side rotator of a clutch has a connecting hole, within which a connecting portion of a rotatable shaft is loosely fitted while providing a space between the connecting hole and the connection portion. The connecting hole of the driving-side rotator is engageable with the connecting portion of the rotatable shaft in a rotational direction to integrally rotate with connecting portion of the rotatable shaft. Two positioning holes are provided in a brush holder, and two positioning projections are provided in a gear housing to allow direct positioning of the brush holder and the gear housing relative to each other.
Claims15
A motor comprising:
- a motor main body, which includes a rotatable shaft and rotates the rotatable shaft;
- a speed reducing unit, which is connected to the motor main body and includes a worm shaft, wherein the worm shaft is substantially coaxial with the rotatable shaft;
- and
- a coupling means for coupling the rotatable shaft with the worm shaft, wherein the coupling means includes:
- a driving-side rotator, which is connected with the rotatable shaft to rotate integrally with the rotatable shaft;
- and
- a driven-side rotator, which is connected with the worm shaft to rotate integrally with the worm shaft and is engageable with the driving-side rotator in a rotational direction, wherein:
- the rotatable shaft includes a connecting portion;
- and
- the driving-side rotator includes a connecting portion, which is loosely fitted with the connecting portion of the rotatable shaft and is engageable with the connecting portion of the rotatable shaft in the rotational direction to rotate integrally with the connecting portion of the rotatable shaft.
A motor comprising:
- a motor main body, which includes a yoke housing, wherein the yoke housing rotatably receives an armature, which includes a rotatable shaft and a commutator;
- a brush holder, which is placed in an opening of the yoke housing, wherein the brush holder holds a plurality of brushes in sliding contact with the commutator and includes a bearing, which rotatably supports the rotatable shaft;
- a speed reducing unit, which includes a gear housing connected to the yoke housing in such a manner that the brush holder is arranged between an opening of the gear housing and the opening of the yoke housing, wherein the gear housing rotatably receives a worm shaft, which is substantially coaxial with the rotatable shaft;
- a coupling means for coupling the rotatable shaft with the worm shaft;
- and
- a positioning means for positioning the brush holder and the gear housing relative to each other, wherein the positioning means is placed between the brush holder and the gear housing.
Dependencies are inferred from the claim text.