Patent ID: 11898635
Assignee: DAIDO KOGYO CO., LTD.
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 14:
15. The tensioner of claim 1, wherein the resistance force imparting section includes:
a back-up spring formed from plate-shaped spring material in an incomplete ring shape and having an outer circumferential face contacting an inner circumferential face of the flat spiral spring;
a pair of axial-movement members disposed at two coil axis direction sides with respect to the flat spiral spring and coaxial to the flat spiral spring, the pair of axial-movement members each being supported so as to be displaceable in a coil axis direction with respect to the fixed section, and having an outer circumferential face that has a decreasing diameter on progression toward a coil axis direction center of the flat spiral spring and that contacts an inner circumferential portion of the back-up spring; and
a resilient member configured to bias the pair of axial-movement members in directions so as to approach each other.