JPWO2023233801A5

JPWO2023233801A5 -

Info

Publication number: JPWO2023233801A5
Application number: JP2023541971A
Authority: JP
Filing date: 2023-04-03
Publication date: 2024-05-14
Anticipated expiration: 2043-04-03

Description

本例では、これに限定されないが、ねじりコイルばね６は、圧縮コイルばねにより構成されている。すなわち、ねじりコイルばね６は、入力側係合部２７と入力側被係合部３４との間に、弾性的に圧縮された状態で挟持されている。したがって、ねじりコイルばね６の弾力に基づいて係合子５に付与される力の第１方向に関する成分の向きは、係合子５の押圧面３３を被押圧面７から遠ざける方向に係合子５を移動させる方向、すなわち、係合子５を径方向内側に向けて移動させる方向となっている。 In this example, although not limited thereto, the torsion coil spring 6 is configured by a compression coil spring. That is, the torsion coil spring 6 is sandwiched in an elastically compressed state between the input side engaging portion 27 and the input side engaged portion 34. Therefore, the direction of the component in the first direction of the force applied to the engaging element 5 based on the elasticity of the torsion coil spring 6 is a direction that moves the engaging element 5 in a direction that moves the pressing surface 33 of the engaging element 5 away from the pressed surface 7, that is, a direction that moves the engaging element 5 radially inward.

出力部材４に回転トルクが逆入力されると、出力部材４の回転方向に関係なく、２つの係合子５は被押圧面７に近づく方向に移動する。より具体的には、図７に示すように、出力側係合部３１が、２つの係合子５の出力側被係合部３５同士の内側で、出力部材４の回転方向（図７の例では時計方向）に回転する。出力側係合部３１の外周面のうち、平坦面３１ａと凸曲面３１ｂとの接続部（角部）により出力側被係合部３５が径方向外側に向けて押圧され、２つの係合子５が被押圧面７に近づく方向に移動する。 When a rotational torque is input in reverse to the output member 4, the two engaging elements 5 move in a direction approaching the pressed surface 7, regardless of the rotational direction of the output member 4. More specifically, as shown in Fig. 7, the output-side engaging portion 31 rotates inside the output-side engaged portions 35 of the two engaging elements 5 in the rotational direction of the output member 4 (clockwise in the example of Fig. 7). The output-side engaged portions 35 are pressed radially outward by the connection portion (corner portion) between the flat surface 31a and the convex curved surface 31b of the outer circumferential surface of the output-side engaging portion 31, and the two engaging elements 5 move in a direction approaching the pressed surface 7.

本例では、ねじりコイルばね６ｂの弾力は、第１方向に関する成分を含むが、第２方向に関する成分を含んでいない。また、ねじりコイルばね６ｂは、引張コイルばねにより構成されている。したがって、ねじりコイルばね６ｂの弾力に基づいて係合子５に付与される力の第１方向に関する成分の向きは、係合子５の押圧面３３を被押圧面７から遠ざける方向に係合子５を移動させる方向、すなわち係合子５を径方向内側に向けて移動させる方向となっている。 In this example, the elastic force of the torsion coil spring 6b includes a component in the first direction but does not include a component in the second direction. The torsion coil spring 6b is a tension coil spring. Therefore, the direction of the component in the first direction of the force applied to the engaging member 5 based on the elastic force of the torsion coil spring 6b is a direction that moves the engaging member 5 in a direction that moves the pressing surface 33 of the engaging member 5 away from the pressed surface 7, that is, a direction that moves the engaging member 5 radially inward.

Claims

A pressed member having a pressed surface on an inner circumferential surface thereof;
an input member having an input side engagement portion arranged radially inside the pressed surface and arranged coaxially with the pressed surface;
an output member having an output side engaging portion disposed radially inward of the input side engaging portion on a radially inner side of the pressed surface and disposed coaxially 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, and being arranged to be movable in a first direction which is a direction toward or away from the pressed surface;
a torsion coil spring provided between the input side engagement portion and the engagement element, generating elastic force including a component related to the first direction, and applying a resistance force to the input side engagement portion against a tendency of the input side engagement portion to rotate relative to the engagement element based on the elastic force;
Equipped with
the engaging element is configured such that, when a rotational torque is input to the input member, the input side engaging portion engages with the input side engaged portion, so that the engaging element moves in a direction away from the pressed surface in the first direction, and engages the output side engaged portion with the output side engaging portion, thereby transmitting the rotational torque input to the input member to the output member, and when a rotational torque is input in reverse to the output member, the output side engaging portion engages with the output side engaged portion, so that the pressing surface is pressed against the pressed surface, causing the pressing surface to frictionally engage with the pressed surface ,
a direction of a component of the elastic force in the first direction is a direction that moves the engaging element in a direction that brings the pressing surface closer to the pressed surface,
the elastic force includes a component in a second direction perpendicular to both the first direction and the axial direction of the pressed surface,
The torsion coil spring is configured by two torsion coil springs, each of which has a component of the elastic force in the second direction opposite to each other for each combination of the input side engaging portion and the input side engaged portion that engage with each other.
Reverse input cut-off clutch.

A pressed member having a pressed surface on an inner circumferential surface thereof;
an input member having an input side engagement portion arranged radially inside the pressed surface and arranged coaxially with the pressed surface;
an output member having an output side engaging portion disposed radially inward of the input side engaging portion on a radially inner side of the pressed surface and disposed coaxially 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, and being arranged to be movable in a first direction which is a direction toward or away from the pressed surface;
a torsion coil spring provided between the input side engagement portion and the engagement element, generating elastic force including a component related to the first direction, and applying a resistance force to the input side engagement portion against a tendency of the input side engagement portion to rotate relative to the engagement element based on the elastic force;
Equipped with
the engaging element is configured such that, when a rotational torque is input to the input member, the input side engaging portion engages with the input side engaged portion, so that the engaging element moves in a direction away from the pressed surface in the first direction, and engages the output side engaged portion with the output side engaging portion, thereby transmitting the rotational torque input to the input member to the output member, and when a rotational torque is input in reverse to the output member, the output side engaging portion engages with the output side engaged portion, so that the pressing surface is pressed against the pressed surface, causing the pressing surface to frictionally engage with the pressed surface ,
a direction of a component of the elastic force in the first direction is a direction that moves the engaging element in a direction that moves the pressing surface away from the pressed surface,
the elastic force includes a component in a second direction perpendicular to both the first direction and the axial direction of the pressed surface,
The torsion coil spring is configured by two torsion coil springs, each of which has a component of the elastic force in the second direction opposite to each other for each combination of the input side engaging portion and the input side engaged portion that engage with each other.
Reverse input cut-off clutch.

A pressed member having a pressed surface on an inner circumferential surface thereof;
an input member having an input side engagement portion arranged radially inside the pressed surface and arranged coaxially with the pressed surface;
an output member having an output side engaging portion disposed radially inward of the input side engaging portion on a radially inner side of the pressed surface and disposed coaxially 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, and being arranged to be movable in a first direction which is a direction toward or away from the pressed surface;
a torsion coil spring provided between the input side engagement portion and the engagement element, generating elastic force including a component related to the first direction, and applying a resistance force to the input side engagement portion against a tendency of the input side engagement portion to rotate relative to the engagement element based on the elastic force;
Equipped with
the engaging element is configured such that, when a rotational torque is input to the input member, the input side engaging portion engages with the input side engaged portion, so that the engaging element moves in a direction away from the pressed surface in the first direction, and transmits the 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 a rotational torque is input in reverse to the output member, the output side engaging portion engages with the output side engaged portion, so that the pressing surface is pressed against the pressed surface, and the pressing surface is frictionally engaged with the pressed surface ,
The torsion coil spring is configured by one tension coil spring that is stretched across a circumferential center portion of the input side engaging portion and a circumferential center portion of the input side engaged portion for each combination of the input side engaging portion and the input side engaged portion that engage with each other.
Reverse input cut-off clutch.

4. The reverse input cutoff clutch according to claim 1, wherein the engaging element is made up of two engaging elements, and the input side engaging portion is made up of two input side engaging portions.