Motor having clutch and manufacturing method thereof

A motor including a motor main body, an output arrangement secured to said motor main body, and a clutch arranged between said motor main body and said output arrangement, said motor main body including a rotatable shaft rotatably supported therein, said output arrangement including a housing and a worm shaft rotatably supported within said housing, said clutch transmitting rotation of said rotatable shaft to said worm shaft and preventing transmission of rotation of said worm shaft to said rotatable shaft, wherein said clutch includes:

• a driven-side rotator that rotates integrally with said worm shaft, wherein said driven-side rotator includes a rotational drive coupling portion for engaging with an operation testing jig for testing operation of said clutch;
• a driving-side rotator that is positioned in generally coaxial relationship with respect to said driven-side rotator and rotates integrally with said rotatable shaft, said driving-side rotator being drivingly engageable with said driven-side rotator;
• an annular collar being received in said housing of said output arrangement in non-rotatable relationship with respect to said housing and surrounding both said driving-side rotator and said driven-side rotator, said driven-side rotator including a control surface facing an inner peripheral surface of said collar, said control surface being spaced-from said inner peripheral surface of said collar for a distance that varies along a circumferential direction of said collar, a smallest inner diameter of said collar being larger than a largest outer diameter of said driving-side rotator, so that said driving-side rotator is axially detachably engageable with said driven-side rotator through said collar;
• and
• a rolling element positioned between said control surface of said driven-side rotator and said inner peripheral surface of said collar, said rolling element rotating integrally with said driven-side rotator when said driving-side rotator is rotated upon energization of said motor, said rolling element being clamped between said control surface of said driven-side rotator and said inner peripheral surface of said collar to prevent rotation of said driven-side rotator when said driven-side rotator is rotated by an external force.

A motor including a motor main body, an output arrangement secured to said motor main body, and a clutch arranged between said motor main body and said output arrangement, said motor main body including a rotatable shaft rotatably supported therein, said output arrangement including a housing and a worm shaft rotatably supported within said housing, said clutch transmitting rotation of said rotatable shaft to said worm shaft and preventing transmission of rotation of said worm shaft to said rotatable shaft, wherein said clutch includes:

• a driven-side rotator that rotates integrally with said worm shaft, wherein [each one of said collar, said support member and] said driven-side rotator includes a positioning portion for engaging with a positioning jig;
• a driving-side rotator that is positioned in generally coaxial relationship with respect to said driven-side rotator and rotates integrally with said rotatable shaft, said driving-side rotator being drivingly engageable with said driven-side rotator;
• an annular collar being received in said housing of said output arrangement in non-rotatable relationship with respect to said housing and surrounding both said driving-side rotator and said driven-side rotator, said driven-side rotator including a control surface facing an inner peripheral surface of said collar, said control surface being spaced from said inner peripheral surface of said collar for a distance that varies along a circumferential direction of said collar, a smallest inner diameter of said collar being larger than a largest outer diameter of said driving-side rotator, so that said driving-side rotator is axially detachably engageable with said driven-side rotator through said collar;
• and
• a rolling element positioned between said control surface of said driven-side rotator and said inner peripheral surface of said collar, said rolling element rotating integrally with said driven-side rotator when said driving-side rotator is rotated upon energization of said motor, said rolling element being clamped between said control surface of said driven-side rotator and said inner peripheral surface of said collar to prevent rotation of said driven-side rotator when said driven-side rotator is rotated by an external force.