Clutch and motor

A clutch comprising:

• an annular clutch housing;
• a driving-side rotating body that is rotationally driven;
• a driven-side rotating body at least partially arranged in the clutch housing and to which rotational driving force is transmitted from the driving-side rotating body;
• a rolling body arranged between an inner circumferential surface of the clutch housing and the driven-side rotating body, wherein the rolling body is rotated about a rotation axis of the driving-side rotating body together with the driving-side rotating body when the driving-side rotating body is rotationally driven and held between the inner circumferential surface of the clutch housing and the driven-side rotating body to restrict rotation of the driven-side rotating body when the driving-side rotating body is not rotationally driven;
• and
• a support member holding the rolling body between the inner circumferential surface of the clutch housing and the driven-side rotating body and being rotatable about the rotation axis of the driving-side rotating body together with the driving-side rotating body;
• wherein:
• when starting rotational drive of the driving-side rotating body, the driving-side rotating body abuts on the support member from a rotation direction of the driving-side rotating body and presses the rolling body in the rotation direction of the driving-side rotating body with the support member to release the rolling body held between the inner circumferential surface of the clutch housing and the driven-side rotating body;
• the clutch further comprises an urging member that urges the support member to limit rotation of the support member about the rotation axis of the driving-side rotating body;
• and
• the urging member urges the support member in a direction perpendicular to the rotation axis of the driving-side rotating body.

A clutch comprising:

• an annular clutch housing;
• a driving-side rotating body that is rotationally driven;
• a driven-side rotating body inserted into the clutch housing and to which rotational driving force is transmitted from the driving-side rotating body;
• a rolling body arranged between an inner circumferential surface of the clutch housing and the driven-side rotating body, wherein the rolling body is held between the clutch housing and the driven-side rotating body when the driving-side rotating body is not rotationally driven to restrict rotation of the driven-side rotating body;
• and
• a support member including a pair of first and second supports and a rolling body holding portion, wherein the first and second supports project in a rotation axis direction of the driving-side rotating body on both sides of the rolling body in a rotation direction of the driving-side rotating body, wherein the rolling body holding portion holds the rolling body between the inner circumferential surface of the clutch housing and the driven-side rotating body, and the support member is rotatable about the rotation axis of the driving-side rotating body together with the driving-side rotating body,
• wherein:
• when starting rotational drive of the driving-side rotating body, the driving-side rotating body abuts on the rolling body holding portion from the rotation direction and presses the rolling body in the rotation direction with the rolling body holding portion to release the rolling body held between the clutch housing and the driven-side rotating body;
• the clutch further comprises a support connecting portion that connects distal end portions of the two first and second supports in the rotation axis direction of the driving-side rotating body;
• the support member includes a plurality of the rolling body holding portions arranged in a rotation direction of the support member and each holding the rolling body;
• and
• the clutch further comprises a connecting portion that connects the distal end portion in the rotation axis direction of the driving-side rotating body of the first support of one of two of the rolling body holding portions located adjacent to each other in the rotation direction of the support member and the distal end portion in the rotation axis direction of the driving-side rotating body of the second support of the other one of the rolling body holding portions adjacent to the first support in the rotation direction of the support member.