US 12,259,015 B2
Reverse-input blocking clutch and manufacturing method thereof
Nagao Dohi, Fujisawa (JP); and Shohei Kaneko, Fujisawa (JP)
Assigned to NSK LTD., Tokyo (JP)
Appl. No. 18/287,951
Filed by NSK Ltd., Tokyo (JP)
PCT Filed Dec. 27, 2022, PCT No. PCT/JP2022/048382
§ 371(c)(1), (2) Date Oct. 23, 2023,
PCT Pub. No. WO2023/136149, PCT Pub. Date Jul. 20, 2023.
Claims priority of application No. 2022-004648 (JP), filed on Jan. 14, 2022.
Prior Publication US 2024/0200617 A1, Jun. 20, 2024
Int. Cl. F16D 43/21 (2006.01); F16D 3/50 (2006.01); F16D 51/12 (2006.01); F16D 59/00 (2006.01); F16D 67/00 (2006.01)
CPC F16D 43/211 (2013.01) [F16D 3/50 (2013.01); F16D 51/12 (2013.01); F16D 59/00 (2013.01); F16D 67/00 (2013.01); F16D 2250/0084 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A reverse-input blocking clutch including:
a pressed member having a pressed surface on an inner peripheral surface thereof;
an input member having at least one input-side engaging portion arranged on inside in a radial direction of the pressed surface and coaxially arranged with the pressed surface;
an output member having an output-side engaging portion arranged on inside in the radial direction of the pressed surface and on inside in the radial direction of the input-side engaging portion, arranged coaxially with the pressed surface, and rotatably supported inside the pressed member;
an engaging element having a pressing surface facing the pressed surface, an input-side engaged portion engageable with the input-side engaging portion, and an output-side engaged portion engageable with the output-side engaging portion, and arranged between the pressed surface and the output-side engaging portion with regard to a first direction which is a direction moving toward or away from the pressed surface so as to move in the first direction;
an elastic member elastically urging the engaging element in a direction that brings the pressing surface closer to the pressed surface with regard to the first direction; and
a displacement prevention member for preventing relative displacement with regard to an axial direction of the engaging element with respect to the output member;
when rotational torque is input to the input member, the engaging element displacing in a direction moving away from the pressed surface with regard to the first direction based on the input-side engaging portion engaging with the input-side engaged portion and transmitting rotational torque input to the input member to the output member by engaging the output-side engaged portion with the output-side engaging portion, and when rotational torque is reversely input to the output member, the engaging element pressing the pressing surface against the pressed surface so as to frictionally engage the pressing surface with the pressed surface based on the output-side engaging portion engaging with the output-side engaged portion, wherein
the pressed member has
an output-side housing element rotatably supporting the output member inside thereof and having the pressed surface on an inner peripheral surface thereof; and
an input-side housing element rotatably supporting the input member inside thereof and coupled and fixed to the output-side housing element.