Reverse-input blocking clutch
AssigneeNsk Ltd.
InventorsKazuyuki Hatanaka, Atsushi Maeda
Life of this patent
Estimating the term…
Abstract
A reverse-input blocking clutch includes a leaf spring having: two held portions that is arranged on both sides of an input-side engaging portion of an input member with respect to a second direction perpendicular to a first direction which is a direction of movement of a pressing surface of an engaging element moving away from or toward a pressed surface of a pressed member and a center axis of the input member, and elastically held between the input-side engaging portion and an input-side engaged portion of the engaging member; and a base portion that connects the two held portions.
Claims9
A reverse-input blocking clutch, comprising:
- a pressed member having a pressed surface around an inner peripheral surface thereof,
- an input member having an input-side engaging portion arranged on an inner side in a radial direction of the pressed surface, the input member being coaxially arranged with the pressed surface,
- an output member having an output-side engaging portion on the inner side in the radial direction of the pressed surface arranged further on the inner side in the radial direction than the input-side engaging portion, the output member being coaxially arranged with the pressed surface,
- 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, the engaging element being arranged so as to be movable in a first direction which is a direction of the pressing surface going away from or toward the pressed surface, and
- a leaf spring having two held portions that are arranged on both sides of the input-side engaging portion with respect to a second direction perpendicular to a center axis of the input member and the first direction and are elastically held between the input-side engaging portion and the input-side engaged portion, and a base portion that connects the two held portions,
- when rotational torque is input to the input member, the engaging element moving in a direction away from the pressed surface with respect to the first direction based on engagement of the input-side engaging portion with the input-side engaged portion, and by engaging the output-side engaged portion with the output-side engaging portion, transmitting the rotational torque input to the input member to the output member, while, when rotational torque is reversely input to the output member, based on engagement of the output-side engaging portion with the output-side engaged portion, the engaging element pressing the pressing surface against the pressed surface so as to frictionally engage the pressing surface with the pressed surface.
Dependencies are inferred from the claim text.