KR20210058196A - One-Way Clutch and Torque Converter Using the Same - Google Patents

Abstract

The present invention relates to a one-way clutch capable of limiting a reactor of a torque converter from rotating in one direction and allowing the same to rotate in the other direction, and a torque converter employing the same. According to such a one-way clutch structure, a displacement race which can be rotated relative to an outer race is stacked in an axial direction, first and second engaged grooves engaged with a locking member with the inner race are formed on a first inner circumference surface of the outer race and a second inner circumference surface of the displacement race, respectively, a relative position of the displacement race to the outer race is changed to make the first and second engaged grooves overlapped to be exposed to the locking member, or to make the first and second engaged grooves non-overlapped not to be exposed to the locking member, thereby controlling whether to engage the locking member with the first and second engaged grooves.

Description

One-Way Clutch and Torque Converter Using the Same}

The present invention relates to a one-way clutch, and more particularly, to a one-way clutch that restricts one-way rotation of a reactor of a torque converter and allows rotation in the other direction, and a torque converter to which the same.

The vehicle torque converter is a mechanical element that transmits the driving force (torque) transmitted from the engine to the transmission side. The torque converter is provided between the engine and the transmission. The torque converter multiplies the driving force of the engine through a fluid in the starting stage and transmits it to the transmission, and in the lock-up stage transmits the driving force of the engine to the transmission through direct mechanical connection.

In general, the torque converter includes a front cover, an impeller, a turbine, a reactor, a lock-up clutch, and a torsion damper. The front cover is made of a disk-shaped member, and is connected to the crankshaft of the engine and rotates by receiving driving force from the engine. The impeller is combined with the front cover and rotates together in response to the rotation of the front cover. The turbine is disposed at a position opposite to the impeller and receives the fluid flowing by the rotation of the impeller to receive the rotational force. The reactor is located between the impeller and the turbine and selectively diverts the flow of oil from the turbine and returns it to the impeller. The lock-up clutch directly connects or disconnects the front cover and the turbine by means of a piston. The piston operates by moving in the axial direction by the fluid. The torsion damper absorbs shock and vibration acting in the direction of rotation of the shaft in the direct connection path between the front cover and the turbine.

The reactor is allowed to rotate in only one direction by means of a one-way clutch. The one-way clutch is provided between the fixed end and the radially inner edge of the reactor. Conventionally, a one-way clutch of a sprag type or a roller type, which is easy to rotate because there is little noise and almost no drag, has been mainly applied (see Patent Document 1).

However, the one-way clutch of the above-described type not only occupies a lot of space in the axial direction, but also the weight cannot be ignored. This inevitably increases the axial length of the vehicle torque converter, which causes the overall length to increase. The increase in battlefield leads to space constraints. In addition, the heavy weight caused the vehicle's fuel economy to deteriorate. In addition, these types of one-way clutches have a high manufacturing cost.

In order to solve the above-described problem, instead of omitting the sprag structure, as in Patent Documents 2 and 3, an elastically deformable locker is installed on one of the outer race and the inner race, and a locking shape is provided on the other side. However, a one-way clutch has been proposed in which the locker and the locking shape are mutually locked in one direction in the circumferential direction and rotation is allowed in the other direction. The one-way clutch having such a structure is simpler than that of a one-way clutch such as a sprag type, so it does not take up much space in the axial direction, and is advantageous in cost reduction and weight reduction.

However, the one-way clutch of this structure has a problem that noise is continuously generated between the locker and the engaging shape when the outer race is free-wheeling.

Accordingly, in order to reduce the noise, efforts have been made to improve the noise as in Patent Documents 4, 5, and 6. However, for these noise prevention structures, an increase in the number of parts was inevitable, and an increase in manufacturing cost was inevitable.

JP 2006-097770 A JP 2014-034980 A KR 2038826 B1 JP 1999-002303 A JP 2000-320580 A US 2002/0014073 A

The present invention was conceived to solve the above-described problems, and the present invention is to provide a one-way clutch capable of minimizing the axial length of a torque converter by minimizing the axial length, and a torque converter to which the same It is done.

An object of the present invention is to provide a one-way clutch that has a simple structure and is easy to manufacture, which can reduce weight and reduce manufacturing cost, and a torque converter to which the same is applied.

An object of the present invention is to provide a one-way clutch that reduces axial dimensions and has a simple structure and does not generate noise, and a torque converter to which the same is applied.

The one-way clutch 50 of the present invention for solving the above-described problem is disposed between the reactor 40 and the fixed end of the torque converter 1, so that the one-way rotation of the reactor 40 with respect to the fixed end is It is not allowed, and rotation in other directions is allowed.

The one-way clutch 50 includes an outer race 51 and a displacement race 52 connected to the reactor 40, and an inner race 53 connected to the fixed end.

The outer race 51 is connected to the reactor 40 and rotates integrally with the reactor 40.

The displacement race 52 is disposed adjacent to the outer race 51 in the axial direction. The displacement race 52 is rotationally restricted with respect to the reactor 40 and rotates, but it is possible to rotate relative to the reactor 40 in a predetermined displacement section c1 including a first position and a second position. .

The inner race 53 is disposed radially inside the outer race 51 and the displacement race 52. The inner race 53 includes a body 531 connected to the fixed end so as to be rotationally constrained.

The outer race 51 is connected to the reactor 40 and rotates integrally with the reactor 40.

A first locking groove 514 is provided on the first inner circumferential surface 513 of the outer race 51, and a second locking groove 524 is provided on the second inner circumferential surface 523 of the displacement race 52.

The body 531 of the inner race 53 includes a locking member 534 extending radially outward so as to be elastically deformable and extending in the other direction in the circumferential direction.

When the displacement race 52 is in the first position, at least a portion of the first locking groove 514 and the second locking groove 524 overlap each other in the axial direction, and the displacement race 52 is in the second position. When in the first engaging groove 514 and the second engaging groove 524 do not overlap each other in the axial direction.

A locking end 538 is provided at an end of the locking member 534.

The locking end 538 may be disposed at the outermost side in the radial direction in a state in which no external force is applied. A distance from the center of rotation to the outermost portion of the locking end 538 may be greater than an inner radius of the first inner circumferential surface 513 and an inner radius of the second inner circumferential surface 523.

The axial thickness of the inner race 53, specifically the axial thickness of the locking member 534 may correspond to the sum of the axial thickness of the outer race 51 and the axial thickness of the displacement race 52. have.

The locking end portion 538 is inserted into a portion where the first locking groove 514 and the second locking groove 524 overlap, and the first locking groove 514 and the second locking groove 524 overlap It is not inserted in the area that has not been done.

The reactor 40 may include a reactor body 41 having a disk shape and a reactor blade 411 extending radially outward from the reactor body 41.

In the center of the reactor body 41, a seating groove 412 recessed in an axial direction may be provided. A through hole 413 may be formed in the center of the seating groove 412. The outer race 51, the displacement race 52, and the inner race 53 may be accommodated in the seating groove 412.

A first rotation restraint part or a rotation restraint protrusion 414 extending inward in a radial direction may be provided on the inner circumferential surface of the seating groove 412, and the first rotation restraint part on the first outer circumferential surface of the outer race 51 Alternatively, a second rotation restraint portion or a rotation restraint groove 512 may be provided in which the rotation restraint protrusion 414 is inserted and engages. Accordingly, the reactor 40 and the outer race 51 may be mutually restricted in rotation.

The rotation restraint protrusions 414 may be arranged at equal intervals along the circumferential direction, and a space between two adjacent rotation restraint protrusions in the circumferential direction may be defined as a first displacement allowable portion or a displacement section groove 415.

The outer diameter of the second outer circumferential surface 521 of the displacement race 52 may be smaller than a distance between the rotation center and the rotation restraining protrusion 414. Accordingly, the second outer circumferential surface 521 of the displacement race 52 may not interfere with the rotation restraining protrusion 414 even if the displacement race 52 rotates.

A second displacement permitting portion or a displacement key 522 protruding outward in a radial direction may be provided on the second outer peripheral surface 521 of the displacement race 52. The displacement key 522 may be disposed between the two rotation restraining protrusions 414 neighboring in the circumferential direction. Accordingly, while the displacement key 522 can be rotated relative to the reactor 40 within the displacement section c1 of the displacement section groove 415, it can be rotationally restricted with respect to the reactor 40.

In a predetermined displacement section c1 of the displacement race 52 with respect to the outer race 51, the first position may be disposed on the other side in the circumferential direction, and the second position may be disposed on one side in the circumferential direction.

When the displacement race 52 is in the first position, when the reactor 40 rotates in one direction, the displacement race 52 may be rotationally restricted with respect to the reactor 40.

When the displacement race 52 is in the second position, when the reactor 40 rotates in another direction, the displacement race 52 may be rotationally restricted with respect to the reactor 40.

The inner diameter of the first inner circumferential surface 513 of the outer race 51 and the inner diameter of the second inner circumferential surface 523 of the displacement race 52 may correspond to each other. Accordingly, the locking end 538 may contact the first inner circumferential surface 513 and the second inner circumferential surface 523.

When the locking end 538 interferes with at least one of the first inner circumferential surface 513 and the second inner circumferential surface 523, the locking member 534 is elastically deformed radially inward and the first locking groove 514 ) And may not be inserted into the second locking groove 524.

The first engaging groove 514 includes a first inclined surface 515 provided on one side in the circumferential direction and a first engaging surface 516 provided on the other side in the circumferential direction, and the first inclined surface 515 goes toward the other side in the circumferential direction. It may have a shape of an inclined surface that gradually increases in depth.

The second engaging groove 524 includes a second inclined surface 525 provided on one side in the circumferential direction and a second engaging surface 526 provided on the other side in the circumferential direction, and the second inclined surface 525 goes toward the other side in the circumferential direction. It may have a shape of an inclined surface that gradually increases in depth.

In the circumferential direction, the first locking groove section a2 in which the first locking groove 514 is provided may be longer than the second locking groove section b2 in which the second locking groove 524 is provided.

The locking member 534 includes a radially extending portion 535 extending radially outward from the body 531, and extending from the radially outer end of the radially extending portion 535 in the other direction in the circumferential direction. It may include a circumferential extension portion 536.

The locking end 538 may be provided at an end of the circumferential extension 536. The circumferential end of the locking end 538 may contact the first locking surface 516 and the second locking surface 526.

The outer circumferential surface of the locking end 538 may contact the first inclined surface 515 and the second inclined surface 525.

The circumferential extension part 536 may have an arc shape with a center disposed radially inside the circumferential extension part 536. The outer circumferential surface of the circumferential extension 536 may be disposed adjacent to the first inner circumferential surface 513 of the outer race 51 and the second inner circumferential surface 523 of the displacement race 52. When the engaging end portion 538 receives force in one direction in the circumferential direction by the reactor 40, the arc shape of the circumferential extension portion 536 is deformed so that the radius of curvature becomes small, and the first inner circumferential surface of the outer race 51 ( 513 and the second inner circumferential surface 523 of the displacement race 52. Accordingly, the load applied to the locking end 538 by the reactor 40 may be supported by the first inner circumferential surface 513 of the outer race 51 and the second inner circumferential surface 523 of the displacement race 52. have.

A friction surface 537 contacting the first inner circumferential surface 513 of the outer race 51 and the second inner circumferential surface 523 of the displacement race 52 may be provided on the outer circumferential surface of the circumferential extension 536. have.

In a state in which the locking end 538 interferes with at least one of the first inner circumferential surface 513 and the second inner circumferential surface 523 so that the circumferential extension 536 is elastically deformed radially inward, the friction surface ( The frictional force acting on the 537 is a frictional force acting on the friction surface 537 when the locking end 538 is inserted into a region where the first locking groove 514 and the second locking groove 524 overlap. Can be smaller than

The torque converter 1 of the present invention may include the one-way clutch 50. That is, the torque converter 1 includes a cover 10 receiving the rotational force of the engine; An impeller 20 rotating integrally with the cover 10; A turbine 30 facing the impeller 20; A reactor 40 disposed between the impeller 20 and the turbine 30; And the one-way clutch 50 disposed between the reactor 40 and the fixed end.

According to the present invention, by applying a cantilever-type one-way clutch, the axial dimension can be implemented very compactly, the weight of the one-way clutch can be improved, and the fuel economy of the vehicle can be improved, and the manufacturing cost can be reduced due to the simple structure. have.

According to the present invention, displacement races that can be rotated relative to the outer race are stacked in the axial direction, and the first locking groove and the second locking groove are arranged between the first inner circumferential surface of the outer race and the displacement race. Each formed on the second inner circumferential surface, and as the relative position of the displacement race with respect to the outer race is changed, the first locking groove overlaps the second locking groove and is exposed to the locking member or the first locking groove and the second locking By preventing the grooves from overlapping each other and not being exposed to the locking member, it controls whether the locking member is engaged with the first locking groove and the second locking groove, thereby reducing noise compared to the conventional cantilever type one-way clutch. It can certainly be prevented.

According to the present invention, since the arc-shaped cantilever is supported by the outer race and the inner circumferential surface of the displacement race, the cantilever is not plastically deformed or destroyed even when a high load is applied to the cantilever in the longitudinal direction.

In addition to the above-described effects, specific effects of the present invention will be described together with explanation of specific matters for carrying out the present invention.

1 is a cross-sectional view of a torque converter to which a one-way clutch according to the present invention is applied.
FIG. 2 is a perspective view illustrating a reactor and a one-way clutch of the torque converter of FIG. 1.
3 is an exploded perspective view of the reactor and one-way clutch of FIG. 2.
4 is an exploded perspective view of the reactor and the one-way clutch of FIG. 3 viewed from different directions.
5 is a side cross-sectional view of a reactor and a one-way clutch of the torque converter of FIG. 1.
6 is a front view of the outer race.
7 is a front view of the displacement race.
8 is a front view of the inner race.
9 to 18 are views showing the one-way clutch installed in the reactor in a state where the cover is omitted, and FIGS. 9 to 12 are views sequentially showing a process of disengaging the one-way clutch, and FIGS. 13 to 18 are It is a diagram sequentially showing the process of locking the way clutch.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention is not limited to the embodiments disclosed below, but various modifications may be made and may be implemented in various different forms. However, this embodiment is provided to complete the disclosure of the present invention and to fully inform a person of ordinary skill in the scope of the invention. Therefore, the present invention is not limited to the embodiments disclosed below, and all changes and equivalents included in the technical spirit and scope of the present invention as well as substituting or adding to each other the constitution of one embodiment and the constitution of another embodiment. To include substitutes.

The accompanying drawings are only for making it easier to understand the embodiments disclosed in the present specification, and the technical idea disclosed in the present specification is not limited by the accompanying drawings, and all changes and equivalents included in the spirit and scope of the present invention It should be understood to include water or substitutes. In the drawings, components may be expressed exaggeratedly large or small in size or thickness in consideration of convenience of understanding, etc., but this will not limit the scope of the present invention to be interpreted.

The terms used in this specification are only used to describe specific embodiments or examples, and are not intended to limit the present invention. And expressions in the singular include plural expressions, unless the context clearly indicates otherwise. In the specification, terms such as to include or consist of are intended to designate the existence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification. In other words, in the specification, terms such as to include, to consist of. It is to be understood that it does not preclude the possibility of the presence or addition of one or more other features or numbers, steps, actions, components, parts, or combinations thereof.

Terms including ordinal numbers such as first and second may be used to describe various elements, but the elements are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another component.

When a component is referred to as being "connected" or "connected" to another component, it is understood that it may be directly connected or connected to the other component, but other components may exist in the middle. It should be. On the other hand, when a component is referred to as being "directly connected" or "directly connected" to another component, it should be understood that there is no other component in the middle.

When an element is referred to as being “above” or “being below” another element, it should be understood that not only is disposed directly above the other element, but also other elements may exist in the middle. .

Unless otherwise defined, all terms used herein including technical or scientific terms have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms as defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in the present application. Does not.

For convenience of explanation, the direction along the longitudinal direction of the axis forming the center of rotation of the torque converter is referred to as the axial direction. The front-rear direction or the axial direction is a direction parallel to the rotation axis, and the front (front) is in any one direction (the first axis direction). ), for example, refers to the direction toward the engine, which is the power source, and the rear (rear) refers to the other direction (the second axis direction), such as the direction toward the transmission. Therefore, the front (front) means the surface that the surface faces forward, and the rear (rear surface) means the surface that the surface faces rearward.

The radial or radial direction means a direction closer to the center or a direction away from the center along a straight line passing through the center of the rotation axis on a plane perpendicular to the rotation axis. A direction away from the center in a radial direction is called a centrifugal direction, and a direction closer to the center is called a centripetal direction.

The circumferential direction or the circumferential direction means a direction surrounding the rotation axis. The outer circumference means the outer circumference, and the inner circumference means the inner circumference. Accordingly, the outer circumferential surface is a surface facing the rotation axis, and the inner circumferential surface is a surface facing the rotation axis.

The circumferential side refers to a surface in which the normal of the surface faces the circumferential direction.

[Torque Converter]

1, the torque converter 1 has an input side (I) and an output side (O). For example, the rotational driving force of the engine is input to the cover 10 from the front of the cover 10. The cover 10 includes a front cover 12 and a rear cover 15 defining a hollow space in which an internal fluid can be filled. The front cover 12 and the rear cover 15 are coupled to each other and rotate integrally.

The input of the torque converter 1 is transmitted to the impeller 20 through the front cover 12 and the rear cover 15. The impeller 20 is fixed to the inner surface of the rear cover 15, and the cover 10 and the impeller 20 rotate together about a predetermined axis. As the impeller 20 rotates, the fluid inside the impeller 20 has rotational kinetic energy of the impeller 20 and flows to the turbine 30 while receiving a force radially outward by the centrifugal force.

The turbine 30 is installed to face the impeller 20 in front of the impeller 20 and rotates around a predetermined axis by receiving the force of the fluid flowing from the impeller 20. The rotation centers of the impeller 20 and the turbine 30 are coaxial, and the impeller 20 and the turbine 30 face each other to form a torus. The turbine 30 is connected to the output side (O) from the inside in the radial direction to output a rotational force.

A reactor 40 is provided in a radially inner portion where the impeller 20 and the turbine 30 face each other. The fluid introduced into the turbine 30 flows radially inward and returns to the impeller 20 through the reactor 40. The reactor 40 includes an annular reactor body 41 and a plurality of reactor blades 411 extending radially outward from the reactor body 41.

A one-way clutch 50 is installed on the inner circumference of the reactor body 41, and the one-way clutch 50 is supported by a fixed end. The one-way clutch 50 prevents the reactor 40 from rotating in one direction with respect to the fixed end, and allows the reactor 40 to rotate in the other direction with respect to the fixed end.

The impeller 20 rotates in the other direction, and following this, the turbine 30 also rotates in the other direction.

When the turbine 30 follows and rotates the impeller 20 so that the speed ratio (SR) of the impeller 20 and the turbine 30 reaches 1:1, the front cover 12 moves to the lock-up clutch 60. It is directly connected to the output side (O). Then, the rotational force of the input side (I) is directly transmitted to the output side (O) through the lock-up clutch 60.

[Reactor]

1 to 5, a structure for installing a one-way clutch 50 is provided in the reactor 40. The structure includes a seating groove 412 provided in the reactor body 41 and a first rotation restraining part 414 formed in the seating groove 412.

The seating groove 412 may have a shape of a flat cylindrical groove recessed from the rear surface of the reactor body 41 to the front. The depression depth of the seating groove 412 may substantially correspond to the sum of the thicknesses of the outer race 51 and the displacement race 52, and may correspond to the thickness of the body 531 of the inner race 53.

A through hole 413 is provided in the center of the seating groove 412. The through hole 413 becomes a passage through which an input shaft (not shown) of a transmission connected to the output side O of the torque converter 1 passes.

A rotation restricting protrusion 414 protruding inwardly in a radial direction is provided on the inner circumferential surface of the seating groove 412. Three rotation restraining protrusions 414 are provided at intervals of 120 degrees. The space between the two rotation restraining protrusions 414 adjacent to each other in the circumferential direction may define a relative rotational range of the displacement race 52 with respect to the reactor 40, that is, a displacement section c1. That is, the space between the two adjacent rotation restraining protrusions 414 in the circumferential direction may be the first displacement allowable portion or the displacement section groove 415. The relative rotation range of the displacement race 52 with respect to the reactor 40 may be directly defined by the structure of the reactor.

Of course, the relative rotation range of the displacement race 52 with respect to the reactor 40 may be defined indirectly through the outer race 51. That is, the reactor 40 may be provided with a structure that restricts rotation of the outer race 51 and the outer race 51 defines a relative rotation range of the displacement race 52.

However, as in the embodiment, if the reactor 40 includes the first displacement permitting portion 415, the outer race 51 may be manufactured to be slimmer. A cover protrusion 416 may be provided on the rear surface of the reactor body 41. The cover protrusion 416 is provided in the vicinity of the rotation restraining protrusion 414, so that the expansion of the inner diameter of the seating groove 412 may be minimized. The lid 54 of the one-way clutch 50 is coupled to the cover protrusion 416.

[One-way clutch]

2 to 5, the one-way clutch 50 has an outer race 51 fixed to the inner circumferential surface of the reactor body 41 so as to rotate together with the reactor 40, and the reactor 40 to some extent. Although rotational displacement is allowed, it includes a displacement race 52 that rotates together with the reactor 40, and an inner race 53 that is fixed to the fixed end and does not rotate.

The races 51, 52, and 53 may be accommodated in the seating groove 412 and may be prevented from being separated from the seating groove 412 by the lead 54. A plurality of slits 55 are provided in the lead 54. The slit 55 is provided at a position corresponding to the space between the outer race 51 and the inner race 53, which will be described later, so that internal fluid can easily enter and exit. In the embodiment, a structure in which three slits 55 are provided at intervals of 120 degrees is illustrated. A central hole 56 is provided in the center of the lead 54. The central hole 56 becomes a passage through which the fixed end and the input shaft (not shown) of the transmission pass.

<Outer Race>

2 to 6, the outer race 51 may have a flat ring shape. The first outer circumferential surface 511 of the outer race 51 may have a circular shape corresponding to an inner diameter of the inner circumferential surface of the seating groove 412. In a state in which the outer race 51 is accommodated in the mounting groove 412, the first outer circumferential surface 511 of the outer race 51 may contact the inner circumferential surface of the mounting groove 412. Accordingly, the centers of the outer race 51 and the reactor 40 may be aligned with each other.

On the first outer circumferential surface 511 of the outer race 51, a second rotation restraint portion or a rotation restraint groove 512 recessed radially inward to correspond to the rotation restraint protrusion 414 may be provided. The rotation constraining groove 512 engages with the rotation constraining protrusion 414 to mutually constrain the reactor 40 and the outer race 51 in a circumferential direction. Accordingly, the outer race 51 is rotationally constrained to the reactor 40 in both directions.

It is not necessary for the outer race 51 to be forcibly fitted into the seating groove 412, and if it is set to be able to move to some extent in the axial direction with respect to the seating groove 412, assembly and disassembly may be facilitated.

The first inner circumferential surface 513 of the outer race 51 may have a circular shape. A first locking groove 514 may be provided on the first inner circumferential surface 513. The first locking groove 514 may have a shape in which the first inner circumferential surface 513 is recessed radially outward. A plurality of first locking grooves 514 may be disposed at equal intervals. In the embodiment, a structure in which the three first locking grooves 514 are arranged at 120 degree intervals is illustrated.

The first engaging groove 514 includes a first engaging surface 516 and a first inclined surface 515. The first inclined surface 515 may be disposed on one side in the circumferential direction of the first locking groove 514, and the first locking surface 516 may be disposed on the other side in the circumferential direction of the first locking groove 514. The first engaging surface 516 has a profile close to the radial direction, and the first inclined surface 515 has a profile close to the circumferential direction.

<Displacement Race>

2 to 5 and 7, the displacement race 52 may have a flat ring shape. The thickness of the displacement race 52 may be equal to or smaller than the thickness of the outer race 51. If the volume of the displacement race 52 is reduced, vibration or noise generated when the displacement race 52 is relatively displaced with respect to the reactor 40 can be minimized.

The displacement race 52 may be arranged to overlap the outer race 51 in the axial direction. In the embodiment, a structure in which the outer race 51 is disposed in front of the axial direction is disclosed, but the order of these may be changed.

The second outer circumferential surface 521 of the displacement race 52 may have a circular shape smaller than the inner end of the rotation restricting protrusion 414 in the radial direction. Accordingly, even if the displacement race 52 is relatively rotated with respect to the reactor 40, the second outer circumferential surface 521 does not interfere with the rotation restraining protrusion 414.

A second displacement allowable portion or a displacement key 522 extending radially outward is provided on the second outer peripheral surface 521 of the displacement race 52. The displacement key 522 may be accommodated in the displacement section groove 415 of the seating groove 412. The circumferential side of the displacement key 522 may face and contact the circumferential side of the rotation restraining protrusion 414. The outer circumferential surface of the displacement key 522 may face and contact the inner circumferential surface of the seating groove 412. The outer diameter of the outer circumferential surface of the displacement key 522 may correspond to the outer diameter of the first outer circumferential surface 511 of the outer race 51. Accordingly, the centers of the reactor 40, the outer race 51, and the displacement race 52 may be aligned.

The width of the displacement key 522 in the circumferential direction may be smaller than the width of the displacement section groove 415 in the circumferential direction. The displacement section c1 of the displacement race 52 may be determined by the circumferential width of the displacement key 522 and the circumferential width of the displacement section groove 415.

The displacement race 52 is rotationally restricted with respect to the reactor 40, but a relative rotational displacement with respect to the reactor 40 is allowed within the displacement section c1.

For example, as shown in Fig. 9, the reactor 40 rotates in one direction (clockwise in the drawing in Fig. 9) while the other circumferential side of the displacement key 522 is in contact with one side in the circumferential direction of the rotation restricting protrusion 414. When the lower surface, the displacement race 52 is rotationally restricted thereto and rotates together. For convenience of explanation, when the displacement key 522 is in the position of FIG. 9 with respect to the reactor 40, it will be assumed that the displacement race 52 is in the first position.

In addition, as shown in FIG. 12, in a state in which one side in the circumferential direction of the displacement key 522 is in contact with the other side in the circumferential direction of the rotation restricting protrusion 414, the reactor 40 is in the other direction (counterclockwise as shown in FIG. 12). When rotated to, the displacement race 52 is rotationally constrained thereto and rotates together. For convenience of explanation, when the displacement key 522 is in the position of FIG. 12 with respect to the reactor 40, it will be assumed that the displacement race 52 is in the second position.

Like the outer race 51, the displacement race 52 does not need to be forcibly fitted into the seating groove 412, and if it is set to be able to move to some extent in the axial direction with respect to the seating groove 412, assembling And can be easy to disassemble.

The second inner circumferential surface 523 of the displacement race 52 may have a circular shape. The second inner circumferential surface 523 may have the same inner diameter as the first inner circumferential surface 513 of the outer race 51.

A second locking groove 524 may be provided on the second inner circumferential surface 523. The second locking groove 524 may have a shape in which the second inner circumferential surface 523 is recessed radially outward. A plurality of second locking grooves 524 may be disposed at equal intervals. In the embodiment, a structure in which the three second locking grooves 524 are arranged at 120 degree intervals is illustrated.

The second locking groove 524 includes a second locking surface 526 and a second inclined surface 525. The second inclined surface 525 may be disposed on one side in the circumferential direction of the second locking groove 524, and the second locking surface 526 may be disposed on the other side in the circumferential direction of the second locking groove 524. The second engaging surface 526 has a profile close to the radial direction, and the second inclined surface 525 has a profile close to the circumferential direction.

The second locking surface 526 has a profile corresponding to the first locking surface 516. Accordingly, the circumferential side surface of the locking end portion 538 of the locking member 534 may contact the first locking surface 516 and the second locking surface 526 at the same time.

The second inclined surface 525 may be steeper than the first inclined surface 515 with respect to the circumferential direction. Accordingly, the first engaging groove section (a2) occupied by the first engaging groove 514 in the circumferential direction may be wider than the second engaging groove section (b2) occupied by the second engaging groove 524 in the circumferential direction. have. In other words, in other words, the first inner circumferential section (a1) of the outer race 51 excluding the section in which the first engaging groove 514 is formed is the displacement race excluding the section in which the second engaging groove 524 is formed. It can be said that it is narrower than the second inner circumferential section (b1) of (52).

In a state in which the displacement race 52 is located at the first position, the first engaging surface 516 and the second engaging surface 526 are disposed at positions coincident with each other in the axial direction. In this state, the second inclined surface 525 is exposed, and the first inclined surface 515 is hidden.

When the displacement race 52 is positioned at the second position, the first locking groove 514 and the second locking groove 524 do not overlap each other in the axial direction. That is, the first locking groove 514 of the outer race 51 is covered by the second inner circumferential surface 523 of the displacement race 52, and the second locking groove 524 of the displacement race 52 is It is covered by the first inner circumferential surface 513 of the outer race 51.

<Inner Race>

2 to 5 and 8, the inner race 53 includes a body 531 having a spline hub 533 fixed to a fixed end formed on an inner circumferential surface thereof. The body 531 may have a flat ring shape extending outward from the spline hub 533 in a radial direction. The thickness of the body 531 may correspond to the sum of the thicknesses of the outer race 51 and the displacement race 52.

The inner race 53 is disposed radially inside the outer race 51 and the displacement race 52. The third outer circumferential surface 532 of the body 531 is radially spaced from the first inner circumferential surface 513 of the outer race 51 and the second inner circumferential surface 523 of the displacement race 52 in the radial direction.

The body 531 includes a locking member 534 extending radially outward from the third outer circumferential surface 532 and extending in the other direction in the circumferential direction (counterclockwise as shown in FIG. 8 ). A plurality of locking members 534 may be disposed at equal intervals along the circumferential direction. In the embodiment, a structure in which the three locking members 534 are disposed at intervals of 120 degrees is illustrated.

The locking member 534 includes a radial extension 535 extending radially outward from the third outer circumferential surface 532 and a circumferential extension extending circumferentially from an end of the radial extension 535 (536) may be included. Accordingly, the locking member may have a shape similar to an “A” shape. The thickness (circumferential width) of the radially extending portion may be thicker than the thickness (radial width) of the circumferentially extending portion. That is, when the locking member 534 is elastically deformed, the amount of deformation of the circumferential extension 536 may be greater than that of the radial extension 535.

The circumferential extension part 536 may have an arc shape convex in a centrifugal direction. The center of the arc of the circumferential extension 536 may substantially correspond to the center of the third outer circumferential surface 532, and may correspond to the center of rotation of the one-way clutch 50.

At the front end of the circumferential extension 536, a locking end 538 having an outer circumferential surface gradually moving away from the center of rotation of the one-way clutch 50 is provided. The locking end portion 538 is disposed farther from the center of rotation than the arc shape of the circumferential extension portion 536. In a state in which no external force is applied to the locking member 534, the outer circumferential surface of the locking end 538 is further radially outward than the inner circumferential surfaces 513 and 523 of the outer race 51 and the displacement race 52. Can be placed. That is, the locking end 538 may be a portion inserted into the locking grooves 514 and 524.

The outer circumferential surface of the circumferential extension 536 is disposed adjacent to the outer race 51 and the inner circumferential surfaces 513 and 523 of the displacement race 52. Therefore, when a force is applied to the locking end 538 in one direction in the circumferential direction, that is, in a direction in which the circumferential extension 536 is compressed along the longitudinal direction, the outer circumferential surface of the circumferential extension 536 is the outer race 51 ) And the inner circumferential surfaces 513 and 523 of the displacement race 52, and accordingly, the inner circumferential surfaces of the outer race 51 and the displacement race 52 support the force. Accordingly, the compression force acting in the longitudinal direction is firmly supported by the shape of the circumferential extension 536 and the inner circumferential surfaces of the outer race 51 and the displacement race 52 as described above.

In addition, since the circumferential extension portion 536 has a cantilever shape that is long by a distance corresponding to approximately 120 degrees, even if a small force acts on the locking end portion 538 in the centripetal direction (inward radial direction), the locking end ( 538) easily sag.

The circumferential side of the locking end 538 is a surface in contact with the first locking surface 516 and the second locking surface 526, and the outer circumferential surface of the locking end 538 is the first inclined surface 515 ) Or a surface in contact with the second inclined surface 525. The shape of the locking end 538 may be appropriately selected in consideration of these points.

Meanwhile, a friction surface 537 in contact with the first inner circumferential surface and the second inner circumferential surface may be further provided on an outer circumferential surface of the circumferential extension 536. In the embodiment, a structure in which the friction surface 537 is disposed close to the radially extending portion 535 is illustrated, but is not limited thereto.

When the locking end portion 538 is inserted into a portion where the first locking groove 514 and the second locking groove 524 overlap, the amount of sag of the circumferential extension portion 536 is very small. In this case, the normal force applied by the friction surface 537 to the first inner circumferential surface and the second inner circumferential surface is large.

On the other hand, when the engaging end 538 interferes with at least one of the first inner circumferential surface 513 and the second inner circumferential surface 523 so that the circumferential extension 536 is elastically deformed radially inward, the circumferential The amount of deflection of the direction extension 536 is large. In this case, the normal force applied by the friction surface 537 to the first and second inner circumferential surfaces is small.

Therefore, the friction surface in a state in which the locking end 538 interferes with at least one of the first inner circumferential surface 513 and the second inner circumferential surface 523 so that the circumferential extension 536 is elastically deformed radially inward. The frictional force acting on 537 is applied to the friction surface 537 while the locking end 538 is inserted into a region where the first locking groove 514 and the second locking groove 524 overlap. It becomes smaller than the frictional force.

Meanwhile, in a state in which the locking end 538 interferes with at least one of the first inner circumferential surface 513 and the second inner circumferential surface 523 so that the circumferential extension 536 is elastically deformed radially inward, the locking end A frictional force acts between the outer circumferential surface of the locking end 538 and the first inner circumferential surface 513 and the second inner circumferential surface 523 by the force 538 is elastically restored to the outside in the radial direction.

<Operation-release of one-way clutch>

1 and 9, the fluid returning from the turbine 30 to the impeller 20 at the initial driving stage (SR 0.00 ~ coupling point) is changed in direction by the reactor 40 and transferred to the impeller 20. , In this process, the reactor 40 receives a force to rotate in one direction (clockwise direction in FIG. 9). In this state, the displacement race 52 is located in the first position, the locking end portion 538 is caught in the first locking surface 516 and the second locking surface 526, and the locking member 534 of the inner race 53 ) Is a state that prevents the reactor 40 from rotating in one direction.

When driving proceeds to reach the coupling point, the fluid returning from the turbine 30 to the impeller 20 exerts a force to rotate the reactor 40 in the other direction (counterclockwise in FIG. 9). Accordingly, the reactor 40 and the outer race 51 rotate in different directions.

The inner race 53 is fixed to the fixed end, and the locking end 538 is inserted into the first locking groove 514 and the second locking groove 524, so that the locking member 534 The friction surface 537 applies a friction force to the first inner circumferential surface 513 and the second inner circumferential surface 523. The rotation restraining protrusion 414 of the reactor 40 applies a rotational force to the outer race 51 in a counterclockwise direction, but cannot apply it to the displacement key 522 of the displacement race 52. Accordingly, the displacement race 52 is prevented from rotating in the counterclockwise direction due to the friction of the friction surface 537 of the locking member 534.

As such, when the displacement race 52 does not rotate and the reactor 40 and the outer race 51 rotate to some extent in the counterclockwise direction, as shown in FIG. 10, the first locking groove of the outer race 51 The first inclined surface 515 of 514 starts to press the locking end 538 of the locking member 534 radially inward.

And when the reactor 40 and the outer race 51 further rotate counterclockwise, as shown in FIG. 11, the first engaging groove 514 of the outer race 51 hides in the displacement race 52, A portion of the outer race 51 on which the first inner circumferential surface 513 is provided hides the second locking groove 524 of the displacement race 52. Since the thickness of the locking end 538 corresponds to the thickness of the outer race 51 and the displacement race 52, the locking end 538 is in contact with the first inner circumferential surface 513 and the second inner circumferential surface 523 Is completely depressed. Then, the frictional force applied by the friction surface 537 to the first inner circumferential surface 513 and the second inner circumferential surface 523 is reduced, while the outer circumferential surface of the locking end 538 is applied to the first inner circumferential surface 513 and the second inner circumferential surface 523. It applies frictional force.

In this state, even if the reactor 40 and the outer race 51 continue to rotate counterclockwise, the locking end 538 and the friction surface 537 apply frictional force to the displacement race 52, and the displacement race 52 rotates. However, in the end, the rotation restricting protrusion 414 of the reactor 40 comes into contact with one side of the displacement key 522 in the circumferential direction as shown in FIG. 12. The displacement race 52 is located in the second position.

In the state shown in FIG. 12, both the first locking groove 514 and the second locking groove 524 are hidden in the second inner circumferential surface 523 and the first inner circumferential surface 513. Then, even if the reactor 40 continues to rotate in the other direction, from the standpoint of the locking member 534, the outer circumferential surface of the locking end 538 continues to contact at least one of the first inner circumferential surface 513 and the second inner circumferential surface 523. maintain. Therefore, even if the reactor 40 continues to free-wheel in the other direction, noise does not occur.

<Operation of One-Way Clutch-Example of First Locking>

As shown in FIG. 12, when the vehicle stops in the freewheeling state and then starts again, that is, when the driving initial state (SR 0.00 ~ coupling point) is reached, the reactor 40 is in one direction, that is, the clock It starts to rotate in the direction.

Since the displacement race 52 is in the second position with respect to the reactor 40, the displacement race 52 is not rotationally constrained to the reactor 40 in the clockwise direction. And since the locking end 538 of the locking member 534 exerts a friction force on the first inner circumferential surface 513 of the outer race 51 and the second inner circumferential surface 523 of the displacement race 52, the displacement race 52 Does not rotate. Accordingly, when the reactor 40 and the outer race 51 rotate clockwise while the displacement race 52 is fixed, the displacement race 52 comes to the first position with respect to the reactor 40. Then, the first engaging groove 514 and the second engaging groove 524 overlap, and the first engaging surface 516 and the second engaging surface 526 are aligned in position. In this state, when the reactor 40, the outer race 51, and the inner race 53 continue to rotate, the locking end 538 overlaps the first locking groove 514 and the second locking groove 524 The manna is elastically restored to the outer side in the radial direction, and then the circumferential side surface of the locking end 538 is caught by the first locking surface 516 and the second locking surface 526, and the state as shown in FIG. Accordingly, the rotation of the reactor 40 is prevented by the locking member 534 of the inner race 53.

<Operation of One-Way Clutch-Second Locking Example>

In some cases, the locking end 538 of the locking member 534 does not have sufficient frictional force on the first inner circumferential surface 513 of the outer race 51 and the second inner circumferential surface 523 of the displacement race 52, and thus locking The frictional force of the member 534 may not prevent the rotation of the displacement race 52 in some cases. According to the embodiment, even in this case, the operation is performed smoothly. The operation in this case will be described with reference to FIGS. 13 to 18.

In the freewheeling state, when the torque converter 1 enters the initial driving stage, the reactor 40 and the outer race 51 rotate clockwise (one direction) as shown in FIG. 13. At this time, if the locking end 538 of the locking member 534 is in contact with the first inner circumferential surface 513 of the outer race 51 and the second inner circumferential surface 523 of the displacement race 52 at the same time, the frictional force is applied to the displacement race 52 May not work well enough for Thus, as shown in FIG. 13, even though the displacement race 52 rotates together with the reactor 40 even though the displacement race 52 is in the second position, as shown in FIG. 14, in a predetermined section. The locking end 538 comes into contact only with the second inner circumferential surface 523 of the displacement race 52. The predetermined section means a second inner circumferential surface 523 in which the first locking groove 514 is hidden by the locking end 538. Then, since the frictional force of the engaging end 538 acts only on the displacement race 52, the rotation stopping force for the displacement race 52 increases.

Then, as shown in FIG. 14, only the reactor 40 and the outer race 51 rotate clockwise while the displacement race 52 is temporarily fixed by the frictional force.

When the displacement race 52 is temporarily fixed by the frictional force and only the reactor 40 and the outer race 51 rotate clockwise, as shown in FIG. 15, the first engaging groove 514 A part of the second engaging groove 524 overlaps with the second engaging surface 526 of the second engaging groove 524 is exposed radially inward.

And when the displacement race 52 is temporarily fixed by the frictional force and only the reactor 40 and the outer race 51 continue to rotate in the clockwise direction, the locking end 538 eventually becomes as shown in FIG. Again, the situation is in contact with the first inner circumferential surface 513 and the second inner circumferential surface 523 simultaneously. Due to this, the frictional force applied by the locking end 538 to the second inner peripheral surface 523 of the displacement race 52 is reduced, so that the reactor 40, the outer race 51, and the displacement race 52 rotate together in a clockwise direction. Even if, in the end, as shown in FIG. 16, the locking end portion 538 meets the overlapped portion of the first locking groove 514 and the second locking groove 524 and is immediately elastically restored to the inside of the overlapped locking groove. Is inserted into

When the reactor 40, the outer race 51, and the displacement race 52 rotate together in the state shown in FIG. 16, first, as shown in FIG. 17, the second engaging surface 526 first becomes the engaging end 538. Meet with. When the state as shown in FIG. 17 is reached, since the locking end 538 directly prevents the clockwise rotation of the displacement race 52 through the second locking surface 526, only the reactor 40 and the outer race 51 are clocked. It will continue to rotate in the direction.

As a result, as shown in FIG. 18, as the first engaging surface 516 of the outer race 51 meets the engaging end 538, the clockwise rotation of the reactor 40 is prevented by the inner race 53.

In order to more reliably ensure the operability of the one-way clutch 50, the frictional force applied by the friction surface 537 to the second inner circumferential surface 523 in the disengaging step of the one-way clutch 50 (Figs. Can be set to be large enough. Anyway, since there is no relative rotation between the inner race 53 and the outer race 51 and the displacement race 52 in a state in which the locking end portion 538 is inserted into the overlapping locking grooves 514 and 524, the friction surface ( 537) may be set so that the frictional force applied to the first and second inner circumferential surfaces 513 and 523 is sufficiently large.

In addition, even if the friction surface 537 is set so that the frictional force applied to the first inner circumferential surface 513 and the second inner circumferential surface 523 is sufficiently large, the locking grooves 514 and 524 do not overlap, so that the locking end 538 is In a state pressed inward in the direction (for example, in a freewheeling state), the friction surface 537 is also somewhat separated from the first inner circumferential surface 513 and the second inner circumferential surface 523, so that the friction surface 537 becomes the first inner circumferential surface 513 ) And the frictional force applied to the second inner circumferential surface 523 is greatly reduced.

On the other hand, in the freewheeling state, that is, in the state where the locking grooves 514 and 524 do not overlap and the locking end 538 is pressed radially inward, the outer circumferential surface of the locking end 538 continues to be the first inner circumferential surface ( 513) and/or the second inner circumferential surface 523. That is, if the elastic force is too large, the frictional force between the engaging end 538 and the first inner circumferential surface 513 and/or the second inner circumferential surface 523 increases. Therefore, the cantilever structure, that is, the elastic force of the circumferential extension part 536, is a state in which the locking end 538 contacts only the second inner circumferential surface 523 of the displacement race 52 (that is, a predetermined section previously described in FIG. 14). It is sufficient if it is set only enough to prevent the rotation of the displacement race 52 at. That is, the elastic force of the circumferential extension 536 prevents the rotation of the displacement race 52 when the reactor 40 rotates clockwise (one direction) while the displacement race 52 is not in the first position. Or, when the reactor 40 rotates counterclockwise (other direction) when the displacement race 52 is not in the second position, it is set to the minimum within the range to prevent the rotation of the displacement race 52 It is desirable to do it.

[Rotation support structure]

Referring to FIG. 1, the turbine 30 and the output side O may face the reactor 40 with a first bearing B1 interposed therebetween. The reactor 40 and the turbine 30 are supported to be mutually rotatable through a first bearing B1.

The rear surface of the lead 54 may face the rear cover 15 with the second bearing B2 interposed therebetween. Accordingly, the reactor 40 and the impeller 20 are supported so as to be mutually rotatable through the second bearing B2.

As described above with reference to the drawings illustrated for the present invention, the present invention is not limited by the embodiments and drawings disclosed in the present specification, and various by a person skilled in the art within the scope of the technical idea of the present invention. It is obvious that transformations can be made. In addition, even if not explicitly described and described the operating effects according to the configuration of the present invention while describing the embodiments of the present invention, it is natural that the predictable effects by the configuration should also be recognized.

1: torque converter
I: input side
O: output side
10: cover
12: front cover
15: rear cover
20: impeller
30: turbine
40: reactor
41: reactor body
411: Reactor Blade
412: seating groove
413: through hole
414: first rotation restraint part (rotation restraint protrusion)
415: first displacement allowance (displacement section groove)
416: cover protrusion
50: one-way clutch
51: outer race
511: first outer peripheral surface
512: second rotation restraint part (rotation restraint groove)
513: inner peripheral face 1
a1: the first inner peripheral section
514: first jamming groove
a2: first jamming groove section
515: first slope
516: first jam plane
52: displacement race
521: second outer peripheral surface
522: second displacement allowance (displacement key)
c1: displacement section
523: 2nd Naejumyeon
b1: 2nd inner circumferential section
524: second jamming groove
b2: second jamming groove section
525: second slope
526: second jam surface
53: inner race
531: body
532: 3rd outer peripheral surface
533: spline hub
534: locking member
535: radial extension
536: circumferential extension
537: friction surface
538: locking end
54: cover
55: slit
56: central hall
60: lock-up clutch
B1: first bearing
B2: second bearing

Claims (11)

As a one-way clutch 50 that is disposed between the reactor 40 and the fixed end of the torque converter 1, it does not allow one-way rotation of the reactor 40 with respect to the fixed end and allows the other direction of rotation,
The one-way clutch 50 is:
An outer race 51 connected to the reactor 40 and integrally rotating with the reactor 40;
The reactor 40 is disposed adjacent to the outer race 51 in the axial direction, and rotated while being rotationally constrained with respect to the reactor 40, and in a predetermined displacement section c1 including a first position and a second position. ) A displacement race 52 capable of being rotated relative to each other;
An inner race 53 including a body 531 connected to the fixed end so as to be rotationally constrained, and disposed radially inside the outer race 51 and the displacement race 52;
A first engaging groove 514 provided on the first inner circumferential surface 513 of the outer race 51;
A second engaging groove 524 provided on the second inner circumferential surface 523 of the displacement race 52; And
Including; a locking member 534 extending radially outward from the body 531 of the inner race 53 so as to be elastically deformable and extending in the other direction in the circumferential direction,
When the displacement race 52 is in the first position, at least a portion of the first locking groove 514 and the second locking groove 524 overlap each other in the axial direction, and the displacement race 52 is in the second position. When in the first engaging groove 514 and the second engaging groove 524 do not overlap each other in the axial direction,
The locking end portion 538 provided at the end of the locking member 534 is inserted into a portion where the first locking groove 514 and the second locking groove 524 overlap, and the first locking groove 514 and A one-way clutch that is not inserted into a portion where the second locking groove 524 does not overlap.
The method according to claim 1,
In a predetermined displacement section (c1) of the displacement race 52 with respect to the outer race 51, the first position is disposed on the other side in the circumferential direction, and the second position is disposed on one side in the circumferential direction. clutch.
The method according to claim 2,
When the displacement race 52 is in the first position, when the reactor 40 rotates in one direction, the displacement race 52 is rotationally constrained with respect to the reactor 40,
When the displacement race (52) is in the second position, when the reactor (40) rotates in the other direction, the displacement race (52) is rotationally constrained with respect to the reactor (40).
The method according to claim 1,
The inner diameter of the first inner circumferential surface 513 and the inner diameter of the second inner circumferential surface 523 correspond to each other.
The method of claim 4,
When the locking end portion 538 interferes with at least one of the first inner circumferential surface 513 and the second inner circumferential surface 523, the locking member 534 is elastically deformed radially inward and the first locking groove 514 ) And not inserted into the second engaging groove 524, a one-way clutch.
The method according to claim 1,
The first engaging groove 514 includes a first inclined surface 515 provided on one side in the circumferential direction and a first engaging surface 516 provided on the other side in the circumferential direction, and the first inclined surface 515 goes toward the other side in the circumferential direction. It has a shape of a slope that gradually increases in depth,
The second engaging groove 524 includes a second inclined surface 525 provided on one side in the circumferential direction and a second engaging surface 526 provided on the other side in the circumferential direction, and the second inclined surface 525 goes toward the other side in the circumferential direction. It has a shape of a slope that gradually increases in depth,
In the circumferential direction, the first engaging groove section (a2) in which the first engaging groove (514) is provided is longer than the second engaging groove section (b2) in which the second engaging groove (524) is provided, a one-way clutch.
The method according to claim 1,
The locking member 534 includes a radially extending portion 535 extending radially outward from the body 531, and extending from the radially outer end of the radially extending portion 535 in the other direction in the circumferential direction. It includes a circumferential extension portion 536,
The locking end portion 538 is provided at the end of the circumferential extension portion 536, a one-way clutch.
The method of claim 7,
The circumferentially extending portion 536 is an arc-shaped center disposed radially inner side of the circumferentially extending portion 536, a one-way clutch.
The method of claim 7,
On the outer circumferential surface of the circumferential extension 536, a friction surface 537 in contact with the first inner circumferential surface 513 of the outer race 51 and the second inner circumferential surface 523 of the displacement race 52 is provided, One-way clutch.
The method of claim 9,
In a state in which the locking end 538 interferes with at least one of the first inner circumferential surface 513 and the second inner circumferential surface 523 so that the circumferential extension 536 is elastically deformed radially inward, the friction surface ( The frictional force acting on the 537 is a frictional force acting on the friction surface 537 when the locking end 538 is inserted into a region where the first locking groove 514 and the second locking groove 524 overlap. A smaller, one-way clutch.
A cover 10 receiving the rotational force of the engine;
An impeller 20 rotating integrally with the cover 10;
A turbine 30 facing the impeller 20;
A reactor 40 disposed between the impeller 20 and the turbine 30; And
Torque converter comprising; the one-way clutch (50) of any one of claims 1 to 10, disposed between the reactor (40) and the fixed end.

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