KR102270690B1 - One-way clutch, method for manufacturing and installing the same and torque converter comprising the same - Google Patents

Abstract

The present invention is an outer race 510 in which a plurality of teeth 512 protruding radially outward along the outer periphery are formed; an inner race 520 arranged coaxially with the outer race 510; and a control unit 530 disposed in the circumferential direction between the outer race 510 and the inner race 520; provides a one-way clutch 500 comprising a.
The tooth 512 has one side 512a and the other side 512b in the circumferential direction, and a rotational force to rotate the outer race 510 in one direction or the other direction is applied to the one side 512a or the other side 512b, respectively. All.
The control unit 530 blocks the relative rotation of the outer race 510 when the relative rotation direction of the outer race 510 with respect to the inner race 520 is the one direction, and the relative rotation of the outer race 510 in the other direction. allow
It is characterized in that the angle formed by the one side (512a) and the other side (512b) with the outer peripheral surface of the outer race (510) is different from each other.
Accordingly, in the present invention, it is more difficult for the reactor body 410 to exit the teeth 512 on the side with a larger angle among the one side 512a and the other side 512b, and wear due to slippage does not occur, so the outer race 510 and The coupling/fastening force of the reactor body 410 may be improved. In addition, the cross-sectional area of the teeth 512 increases significantly toward the inner side in the radial direction by the opposite side with a small angle, which makes it difficult to deform or damage the teeth 512, so the coupling / fastening force between the outer race 510 and the reactor body 410 is can be improved

Description

ONE-WAY CLUTCH, METHOD FOR MANUFACTURING AND INSTALLING THE SAME AND TORQUE CONVERTER COMPRISING THE SAME

The present invention relates to a one-way clutch, a method for manufacturing and installing the same, and a torque converter including the same, and more particularly, to a one-way clutch for easily improving the fastening force of an outer race at low cost, a method for manufacturing and installing the same, and a method including the same It is related to the torque converter.

The one-way clutch is configured to include an outer race, an inner race coaxial with the outer race and installed concentrically with the outer race, and a control unit disposed between the outer race and the inner race.

The control unit permits or blocks the rotation of the outer race or the inner race according to the relative rotation direction of the outer race and the inner race. The control unit may be configured to include a support for supporting them, such as a sprag or a roller.

For example, the one-way clutch may be provided in a reactor of a torque converter for a vehicle. Let's take a look at this.

A torque converter for a vehicle is a mechanical element that transmits a driving force (torque) transmitted from an engine to a 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, a torque converter includes an impeller, a turbine, and a reactor. Here, a reactor is positioned between the impeller and the turbine to selectively divert the flow of fluid exiting the turbine and return it to the impeller. Since the reactor is allowed to rotate in only one direction by the one-way clutch provided in the reactor, the flow of the fluid can be selectively switched.

The one-way clutch provided in the reactor is provided between the radially inner edge of the reactor and the fixed end. The outer race of the one-way clutch provided in the reactor may be coupled to the reactor to receive the rotational force of the reactor, and the inner race may be coupled to the fixed end to be fixed.

On the other hand, since the one-way clutch can allow or block rotation according to the direction of rotation relative to the inner race of the outer race, the outer race must be strongly coupled with an external structure that applies a rotational force to the outer race or fixes the outer race. For example, the one-way clutch provided in the reactor of the torque converter must be strongly coupled to the reactor.

A prior art regarding a method in which the outer race of the one-way clutch is strongly coupled/fastened to an external structure will be reviewed with FIGS. 1 and 2 .

Japanese Patent Application Laid-Open No. 2019-019905 (hereinafter, Prior Art 1) discloses a plurality of fitting grooves 71 in which an outer ring 3 (outer race) is fitted to a fitting groove 71 of an installation target member 7 (external structure), as shown in FIG. 1 . It provides a one-way clutch, characterized in that it has the projection 311 at a position corresponding to the outer diameter side of the concave portion (30).

However, in Prior Art 1, when the rotational force is applied to the outer ring 3, the rotational force may be concentrated only on the side surfaces of the few grooves 71 and the protrusions 311 . Accordingly, since the side surfaces of the groove 71 and the protrusion 311 may be easily worn, the coupling/fastening force may be rapidly reduced. In addition, in order to precisely form the grooves 71 and the protrusions 311 , the manufacturing cost may increase, and the coupling/fastening force may be greatly reduced due to manufacturing errors.

U.S. Patent No. 8479599 (hereinafter referred to as Prior Art 2) discloses that, as shown in FIG. 2 , a groove 22 forming a sawtooth shape is formed on the outer periphery of the outer race 20 and a sawtooth surface 20a is formed on the crankshaft ( 11, an external structure) is press-fitted to provide a starter for an internal combustion engine having a one-way clutch in which the outer race 20 is fixed to the crankshaft 11 (external structure).

However, since the teeth of the prior art 2 have one side and the other side symmetrical in the circumferential direction and the inclination is gentle, when the crankshaft 11 rotates strongly in one direction, the crankshaft 11 easily escapes from the teeth along the inclined surface of one side of the teeth. The coupling/fastening with the outer race 20 may be released, and in this process, the teeth and the outer race 20 may be easily worn, so that the coupling/fastening force may be rapidly reduced.

In particular, since a larger force is applied to one side or the other side of the teeth, which receives a rotational force in a direction in which the relative rotation of the outer race is prevented, it may be inappropriate to symmetrically form the teeth.

As in the prior art, if the coupling/fastening force between the outer race and the external structure is weakened or the coupling/fastening is released, the one-way clutch cannot efficiently transmit or block power in one direction, so energy is lost and energy efficiency can be reduced. have.

In particular, in the torque converter, if the coupling/fastening force between the reactor and the outer race is weakened, the reactor cannot selectively convert the flow of the fluid coming out of the turbine, so the effect of increasing the torque by the reactor can be significantly reduced.

The present invention has been devised to solve the above-described problems, and a one-way clutch that improves the fastening force of an outer race easily and at low cost through teeth provided on the outer periphery of the outer race, a manufacturing and installation method thereof, and a torque converter including the same aims to provide

In order to solve the above problems, the present invention provides an outer race 510 in which a plurality of teeth 512 protruding radially outward along the outer periphery are formed; an inner race 520 arranged coaxially with the outer race 510; and a control unit 530 disposed in a circumferential direction between the outer race 510 and the inner race 520; provides a one-way clutch 500 including.

The tooth 512 has one side 512a and the other side 512b in the circumferential direction, and a rotational force is applied to the one side 512a or the other side 512b to rotate the outer race 510 in one direction or the other, respectively. All.

The control unit 530 blocks the relative rotation of the outer race 510 when the relative rotation direction of the outer race 510 with respect to the inner race 520 is the one direction, and the relative rotation of the outer race 510 in the other direction. allow

The angles formed by the one side 512a and the other side 512b with the outer circumferential surface of the outer race 510 are different from each other.

An angle between the one side 512a and the outer circumferential surface of the outer race 510 is greater than that of the other side 512b.

An angle between the one side 512a and the outer circumferential surface of the outer race 510 is 75 degrees to 90 degrees.

The angle between the other side 512b and the outer circumferential surface of the outer race 510 is 20 degrees to 45 degrees.

An angle between the one side 512a and the other side 512b is 45 degrees to 80 degrees.

The radially outer end of the tooth 512 is formed narrow in the circumferential direction.

In addition, the present invention in order to solve the above problems, any one of the one-way clutch 500; and a reactor 400 comprising a reactor body 410 to which the teeth 512 are coupled to an inner circumferential surface; provides a torque converter 10 comprising.

In addition, in order to solve the above-described problem, the present invention provides an outer race manufacturing step (S610) of manufacturing the outer race 510; and a press-fitting step (S620) of press-fitting the outer race 510 into the reactor body 410; provides a manufacturing and installation method 600 of a one-way clutch comprising.

According to embodiments of the present invention, the teeth 512 may be formed so that the angles formed by the one side 512a and the other side 512b with the outer circumferential surface of the outer race 510 are different from each other. Accordingly, the inclinations of the one side 512a and the other side 512b may be formed differently depending on the magnitude of the different forces applied to the one side 512a and the other side 512b of the sawtooth 512 . Specifically, on the side with a larger angle among the one side 512a and the other side 512b, it is more difficult for the reactor body 410 to escape the teeth 512, and wear due to slippage does not occur, so the outer race 510 and the reactor body The coupling/fastening force of 410 may be improved. In addition, the cross-sectional area of the teeth 512 increases significantly toward the inner side in the radial direction by the opposite side with a small angle, so that the teeth 512 are difficult to be deformed or damaged, so the coupling/fastening force between the outer race 510 and the reactor body 410 is can be improved

According to embodiments of the present invention, the teeth 512 may be formed such that an angle (a) formed by one side 512a with the outer circumferential surface of the outer race 510 is greater than that of the other side 512b. Therefore, even if a larger rotational force in the direction (eg, counterclockwise) in which the relative rotation of the outer race 510 is prevented is applied to the one side 512a, the reactor body 410 exits the one side 512a with a larger angle. Since it is difficult, the coupling/fastening force between the outer race 510 and the reactor body 410 may be improved. In addition, since the inner circumferential surface of the reactor body 410 is not slippery along the slope of which the angle a of one side 512a is large, the inner circumferential surface and the one side 512a of the reactor body 410 are not worn, so the outer race 510 and the reactor The coupling/fastening force of the body 410 may be improved. In addition, since a smaller force is applied to the other side 512b, even if the angle is smaller, it is not easy for the reactor body 410 to exit the other side 512b, and at the same time as the other side 512b is gently inclined toward the inside in the radial direction. Since the cross-sectional area of the teeth 512 is greatly increased, the teeth 512 are hardly deformed or damaged, so that the coupling/fastening force between the outer race 510 and the reactor body 410 can be improved.

According to embodiments of the present invention, the teeth 512 may be formed such that the angle (a) formed by the one side 512a with the outer circumferential surface of the outer race 510 is 75 degrees to 90 degrees. Therefore, even if a greater force is applied to one side 512a than the other side 512b, it is difficult for the reactor body 410 to exit the one side 512a having a large inclination angle, so the outer race 510 and the reactor body 410 are combined / The fastening force may be improved. In addition, since the inner circumferential surface of the reactor body 410 is not slippery along the slope of the one side 512a, the inner circumferential surface and the one side 512a of the reactor body 410 are not worn, so the outer race 510 and the reactor body 410 are combined. / Tightening force can be improved.

According to the embodiments of the present invention, the teeth 512 may be formed such that the angle b between the other side 512b and the outer circumferential surface of the outer race 510 is 20 degrees to 45 degrees. Therefore, since the angle of the other side 512b is sufficiently inclined to 20 degrees or more, it is difficult for the reactor body 410 to easily exit the other side 512b, so that the coupling/fastening force between the outer race 510 and the reactor body 410 can be improved. have. In addition, since the angle (b) is sufficiently gentle to 45 degrees or less, the cross-sectional area of the teeth 512 increases significantly toward the inner side in the radial direction, so that the teeth 512 are hardly deformed or damaged, so the outer race 510 and the reactor body 410 The bonding/fastening force of the can be improved.

According to embodiments of the present invention, the teeth 512 may be formed such that the angle c between the one side 512a and the other side 512b of the sawtooth 512 is 45 degrees to 80 degrees. Therefore, the cross-sectional area of the teeth 512 is greatly increased as the angle c between them is sufficiently widened to 45 degrees or more toward the radially inner side, so that the teeth 512 are hardly deformed or damaged, so the outer race 510 and the reactor body 410 The bonding/fastening force of the can be improved. In addition, since the angle c between them is sufficiently angled to be 80 degrees or less, the outer race 510 can be stably and easily press-fitted into the inner peripheral surface of the reactor body 410 .

According to embodiments of the present invention, the radially outer end of the tooth 512 may be formed narrowly in the circumferential direction. Therefore, the end of the tooth 512 is sharp, so that it can be stably and easily press-fitted to the inner peripheral surface of the reactor body 410 .

According to embodiments of the present invention, since the coupling/fastening force between the outer race 510 and the reactor body 410 included in the torque converter 10 can be improved, the torque increasing effect of the torque converter 10 is stably maintained. and energy efficiency can be improved.

According to embodiments of the present invention, since the outer race 510 in which the teeth 512 are protruded can be manufactured/processed through the sintering process in the outer race manufacturing step (S610), the present invention can be easily and inexpensively performed without an additional process. An outer race 510 may be formed.

According to the embodiments of the present invention, the outer race 510 may be press-fitted into the reactor body 410 in the press-fitting step S620 to easily and stably install the outer race 510 at a low cost.

In addition to the above-described effects, the specific effects of the present invention will be described together while describing specific details for carrying out the invention below.

1 and 2 are views showing the prior art.
3 is a half cross-sectional view showing a torque converter according to an embodiment of the present invention.
4 to 6 are a perspective view, a front view, and a left side view showing a one-way clutch according to an embodiment of the present invention.
7 and 8 are front and partial enlarged views illustrating a state in which the outer race is press-fitted into the reactor body according to an embodiment of the present invention.
9 is a flowchart illustrating a method of manufacturing and installing a one-way clutch according to an embodiment of the present invention.

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 can be implemented in a variety of different forms, and only these embodiments allow the disclosure of the present invention to be complete and to completely convey the scope of the invention to those of ordinary skill in the art. It is provided to inform you. 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 the configuration of any one embodiment and the configuration of other embodiments to each other It should be understood to include water or substitutes.

The accompanying drawings are only for easy understanding of the embodiments disclosed in the present specification, and the technical spirit 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, in consideration of the convenience of understanding, the size or thickness may be exaggeratedly large or small, but the protection scope of the present invention should not be construed as being limited thereto.

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

Terms including an ordinal number, such as first, second, etc., 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.

When a component is referred to as being “connected” or “connected” to another component, it is understood that the other component may be directly connected or connected to the other component, but other components may exist in between. it should be On the other hand, when it is mentioned that a certain element is "directly connected" or "directly connected" to another element, it should be understood that the other element does not exist in the middle.

When an element is referred to as being "on" or "below" another element, it should be understood that other elements may be present in the middle as well as disposed directly on the other element. .

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

For convenience of description, 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 any one direction (first axial direction). ), for example, means a direction toward the engine, which is a power source, and the rear (rear) means another direction (second axial direction), for example, a direction toward the transmission. Therefore, the front (front) means the surface on which the surface faces the front, and the rear (rear) means the surface on which the surface faces the rear.

The radial or radial direction means a direction approaching 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 referred to as a centrifugal direction, and a direction closer to the center is referred to as a centripetal direction.

The circumferential direction or the circumferential direction means a direction surrounding the rotation shaft. The outer circumference means the outer circumference, and the inner circumference means the inner circumference. Accordingly, the outer circumferential surface is a surface facing away from the rotation shaft, and the inner circumferential surface is a surface facing the rotation shaft. The first body and the second body of claim 1 may correspond to, for example, a reactor body and a fixed end to be described later.

[Torque Converter]

3 is a half cross-sectional view showing a torque converter according to an embodiment of the present invention.

Referring to FIG. 3 , the torque converter 10 according to an embodiment includes a front cover 100 , an impeller 200 , a turbine 300 , a reactor 400 , and a one-way clutch 500 .

The front cover 100 is made of a disk-shaped member, is connected to the crankshaft of the engine, and can rotate by receiving driving force from the engine.

The impeller 200 may be coupled to the front cover 100 to rotate together in response to the rotation of the front cover 100 . As the impeller 200 rotates, the fluid inside the impeller 200 has rotational kinetic energy of the impeller 200 , and may flow to the turbine 300 while receiving a radially outward force by centrifugal force.

The turbine 300 may be installed to face the impeller 200 in front of the impeller 200 , and may be rotated about a predetermined axis by receiving the force of the fluid flowing from the impeller 200 . The center of rotation of the impeller 200 and the turbine 300 may be coaxial, and the impeller 200 and the turbine 300 may face each other to form a torus. The turbine 300 may be connected to the output side from the inside in the radial direction to output a rotational force.

The reactor 400 may be provided at a radially inner portion where the impeller 200 and the turbine 300 face each other. The reactor 400 is positioned between the impeller 200 and the turbine 300 to selectively divert the flow of the fluid coming out of the turbine 300 and return it to the impeller 200 .

Specifically, the reactor 400 is configured to include an annular reactor body 410 and a plurality of reactor blades 420 extending radially outwardly from the reactor body 410 .

A one-way clutch 500 is installed on the inner periphery of the reactor body 410 , and the one-way clutch 500 may be supported by a fixed end. The one-way clutch 500 prevents rotation of the reactor 400 with respect to the fixed end in one direction, and allows rotation of the reactor 400 with respect to the fixed end in the other direction.

The impeller 200 rotates in the other direction, and the turbine 300 may also rotate in the other direction in accordance with this.

In addition, the reactor 400 may be configured to further include a retainer 430 installed in front of the reactor body 410 . The retainer 430 may prevent the one-way clutch 500 installed on the inner periphery of the reactor body 410 from escaping to the front.

[One-Way Clutch]

4 to 6 are a perspective view, a front view, and a left side view showing a one-way clutch according to an embodiment of the present invention.

4 to 6 , the one-way clutch 500 according to an embodiment may include an outer race 510 , an inner race 520 , and a control unit 530 .

[Outer Race]

The outer race 510 may correspond to a ring shape and may have a plurality of teeth 512 on the outer circumferential surface.

The teeth 512 may be formed to protrude radially outward along the outer periphery of the outer race 510 . The teeth 512 may be press-fitted into the inner circumferential surface of an external structure such as the above-described reactor body 410 . Accordingly, the outer race 510 may be coupled/fastened to an external structure such as the reactor body 410 and rotated together. Specific details related to the teeth 512 will be described later in FIGS. 7 and 8 .

Hereinafter, the external structure and the reactor body 410 are mixed.

The inner circumferential surface of the outer race 510 may be in contact with the outer circumferential surface of the roller 532 included in the controller 530 .

In addition, the inner peripheral surface of the outer race 510 may be formed to gradually decrease the distance from a certain support part 534 to the outer peripheral surface of the inner race 520 as it goes to the next support part 534 in a clockwise direction. That is, the space between the races 510 and 520 may decrease from one support portion 534 toward the next support portion 534 in a clockwise direction, for example. Accordingly, when the roller 532 moves from a certain support part 534 toward the next support part 534 in a clockwise direction by the rotation of the one-way clutch 500, the roller 532 is caught between the races 510 and 520 and the one-way Rotation of the clutch 500 may be prevented.

[Inner Race]

The inner race 520 may correspond to a ring shape and may be arranged coaxially with the outer race 510 . The outer peripheral surface of the inner race 520 may be in contact with the outer peripheral surface of the roller 532 included in the control unit (530).

A spline hub having a tooth shape fixed so as not to be rotated with respect to the fixed end may be provided on the inner circumferential surface of the inner race 520 . The inner race 520 may be fixedly coupled to the fixed end.

Meanwhile, unlike FIGS. 4 to 6 , the inner race 520 may be formed integrally with the fixed end.

[control unit]

The control unit 530 may include a roller 532 , a support unit 534 , and a spring 536 , and may be disposed between the outer race 510 and the inner race 520 in the circumferential direction.

However, it is not limited to this configuration. For example, unlike FIGS. 4 to 6 , the control unit 530 may be configured to include a sprag instead of the roller 532 .

If the relative rotation direction of the outer race 510 with respect to the inner race 520 is in one direction, the control unit 530 blocks the relative rotation of the outer race 510 and in the other direction allows the relative rotation of the outer race 510. have. Matters related to the one direction and the other direction will be described later with reference to FIGS. 7 and 8 .

[Roller]

A plurality of rollers 532 may be disposed with a predetermined interval between the outer race 510 and the inner race 520 in the circumferential direction, and may have a cylindrical shape. In addition, the roller 532 may contact the inner circumferential surface of the outer race 510 and the outer circumferential surface of the inner race 520 .

[Support]

The support part 534 may be disposed in the circumferential direction between the outer race 510 and the inner race 520 and may be integrally formed with the outer race 510 .

The support portion 534 may be formed as many as the number of rollers 532 , and may partition the rollers 532 and support the rollers 532 and the spring 536 .

[spring]

The spring 536 may be coupled to one side of the support part 534 to elastically support the roller 532 .

The spring 536 elastically supports the roller 532, thereby allowing the one-way clutch 500 to continuously rotate in any one direction.

[saw tooth]

7 and 8 are front and partial enlarged views illustrating a state in which the outer race is press-fitted into the reactor body according to an embodiment of the present invention.

7 and 8 , the teeth 512 integrally formed with the outer race 510 on the outer periphery of the outer race 510 may be press-fitted into the inner peripheral surface of the reactor body 410 .

The teeth 512 may have one side 512a and the other side 512b in the circumferential direction.

When the reactor body 410 rotates in one direction (eg, counterclockwise), a rotational force to rotate the outer race 510 in one direction (eg, counterclockwise) may be applied to one side 512a of the teeth 512 .

On the other hand, when the reactor body 410 rotates in the other direction (eg, clockwise), a rotational force is applied to the other side 512b of the teeth 512 to rotate the outer race 510 in the other direction (eg, clockwise). can

At this time, if the relative rotation direction of the outer race 510 with respect to the inner race 520 is one direction (eg, counterclockwise), the control unit 530 blocks the relative rotation of the outer race 510 and the other direction (eg, clockwise), it is possible to allow relative rotation of the outer race 510 .

That is, when a force is applied to one side 512a of the teeth 512 in one direction (eg, counterclockwise), the relative rotation of the outer race 510 is prevented by the control unit 530, and the other side of the teeth 512 ( When a force is applied in the other direction (eg, clockwise) to 512b), relative rotation of the outer race 510 by the controller 530 may be allowed.

Here, when the inner race 520 is coupled to the fixed end and fixed, the relative rotation direction may mean the rotation direction of the outer race 510, and the relative rotation may mean the rotation of the outer race 510. can Hereinafter, for convenience of description, it is assumed that the inner race 520 is fixed.

On the other hand, when a force is applied to one side 512a of the teeth 512 by the reactor body 410 in one direction (eg, counterclockwise), the control unit 530 controls the outer race 510 in one direction (eg, counterclockwise). ) to prevent rotation, a large force may be applied to one side (512a) of the teeth 512.

On the other hand, when a force is applied to the other side 512b of the tooth 512 by the reactor body 410 in the other direction (eg, clockwise), the control unit 530 controls the outer race 510 in the other direction (eg, clockwise). direction), so a small force may be applied to the other side 512b of the tooth 512.

That is, the magnitude of the force applied to the one side 512a and the other side 512b may be different from each other, and the force applied to the one side 512a may be greater than that of the other side 512b.

Angles (a, b) formed by the one side (512a) and the other side (512b) with the outer circumferential surface of the outer race (510) according to the magnitude of the different forces applied to the one side (512a) and the other side (512b) of the tooth (512) If the teeth 512 are formed to be different from each other, the inclination of one side 512a and the other side 512b can be adjusted according to the magnitude of the different force, so the coupling/fastening force of the outer race 510 and the reactor body 410 is can be improved

For example, if the teeth 512 are formed so that the angle of the side (eg, one side) to which a greater force is applied becomes larger, the reactor body 410 is difficult to pass through, for example, the one side 512a, so the outer race ( The coupling/fastening force between the 510 and the reactor body 410 may be improved.

In addition, if the angle of the side (eg, one side) to which a greater force is applied becomes larger, the inner peripheral surface of the reactor body 410 becomes difficult to slide along the slope of the one side 512a, for example, the inner peripheral surface and one side of the reactor body 410 ( 512a) is not worn, so the coupling/fastening force between the outer race 510 and the reactor body 410 may be improved.

On the other hand, if the teeth 512 are formed so that the angle of the side to which a smaller force is applied (eg, the other side) becomes smaller, the reactor body 410 is not easy to escape, for example, the other side 512b, while the other side ( 512b), the cross-sectional area of the teeth 512 increases significantly toward the inner side in the radial direction by the gentle inclination of 512b), so the teeth 512 are hardly deformed or damaged, so that the coupling/fastening force between the outer race 510 and the reactor body 410 is improved. can be

Specifically, since a greater force may be applied to the one side 512a than the other side 512b, the angle (a) between the one side 512a and the outer circumferential surface of the outer race 510 is the other side 512b. It is possible to form the sawtooth 512 to be larger than the angle (b) formed with the outer peripheral surface of Here, the angles a and b may correspond to values between 0 degrees and 90 degrees.

In this way, one side (512a) and the other side (512b) of one side (512a) and the other side (512b) of the teeth 512 by forming the teeth 512 so that the angle formed with the outer peripheral surface of the outer race 510 is different from each other (512a) and the other side (512b) The inclinations of the one side 512a and the other side 512b may be formed differently according to different magnitudes of force applied to the .

Therefore, on the side with a larger angle among the one side 512a and the other side 512b, it is more difficult for the reactor body 410 to escape the teeth 512, and wear due to slippage does not occur, so the outer race 510 and the reactor body ( 410) may be improved. In addition, the cross-sectional area of the teeth 512 increases significantly toward the inner side in the radial direction by the opposite side with a small angle, so that the teeth 512 are difficult to be deformed or damaged, so the coupling/fastening force between the outer race 510 and the reactor body 410 is can be improved

In addition, by forming the teeth 512 so that the angle (a) that one side 512a makes with the outer circumferential surface of the outer race 510 is larger than the other side 512b, the relative rotation of the outer race 510 is prevented ( For example, even if a larger rotational force in the counterclockwise direction is applied to one side 512a, the reactor body 410 is difficult to pass through the one side 512a having a larger angle, so the outer race 510 and the reactor body 410 are combined. / Tightening force can be improved.

In addition, since the inner circumferential surface of the reactor body 410 is not slippery along the slope of which the angle a of one side 512a is large, the inner circumferential surface and the one side 512a of the reactor body 410 are not worn, so the outer race 510 and the reactor The coupling/fastening force of the body 410 may be improved.

In addition, since a smaller force is applied to the other side 512b, even if the angle is smaller, it is not easy for the reactor body 410 to exit the other side 512b, and at the same time as the other side 512b is gently inclined toward the inside in the radial direction. Since the cross-sectional area of the teeth 512 is greatly increased, the teeth 512 are hardly deformed or damaged, so that the coupling/fastening force between the outer race 510 and the reactor body 410 can be improved.

Specifically, for example, the angle (a) formed by the one side 512a with the outer circumferential surface of the outer race 510 may be 75 degrees to 90 degrees. Here, 90 degrees may correspond to a maximum angle formed by one side 512a with the outer circumferential surface of the outer race 510 .

In this way, by forming the teeth 512 so that the angle (a) formed with the outer circumferential surface of the one side (512a) of the outer race 510 is 75 to 90 degrees, a greater force is applied to the one side (512a) than the other side (512b). Since it is difficult for the reactor body 410 to pass through the side 512a having a large inclination angle even when applied, the coupling/fastening force between the outer race 510 and the reactor body 410 can be improved.

In addition, since the inner circumferential surface of the reactor body 410 is not slippery along the slope of the one side 512a, the inner circumferential surface and the one side 512a of the reactor body 410 are not worn, so the outer race 510 and the reactor body 410 are combined. / Tightening force can be improved.

In addition, the angle (b) formed by the other side 512b with the outer peripheral surface of the outer race 510 may be 20 degrees to 45 degrees.

In this way, by forming the teeth 512 so that the angle (b) that the other side 512b makes with the outer peripheral surface of the outer race 510 is 20 degrees to 45 degrees, the angle of the other side 512b is sufficiently inclined to 20 degrees or more. Since it is difficult for the reactor body 410 to easily pass through the other side 512b, the coupling/fastening force between the outer race 510 and the reactor body 410 may be improved. In addition, since the angle (b) is sufficiently gentle to 45 degrees or less, the cross-sectional area of the teeth 512 increases significantly toward the inner side in the radial direction, so that the teeth 512 are hardly deformed or damaged, so the outer race 510 and the reactor body 410 The bonding/fastening force of the can be improved.

On the other hand, the angle c between one side 512a and the other side 512b of the sawtooth 512 may be 45 degrees to 80 degrees.

In this way, by forming the teeth 512 so that the angle c between one side 512a and the other side 512b of the teeth 512 is 45 degrees to 80 degrees, the angle c between them is 45 degrees or more. Since the cross-sectional area of the teeth 512 is greatly increased as they spread apart and go radially inward, the teeth 512 are hardly deformed or damaged, so that the coupling / fastening force between the outer race 510 and the reactor body 410 can be improved, and the angle between c) is sufficiently angled to 80 degrees or less, so that the outer race 510 can be stably and easily press-fitted to the inner peripheral surface of the reactor body 410 .

In addition, the radially outer end of the tooth 512 may be formed narrow in the circumferential direction. Here, the radially outer end of the tooth 512 may mean a space between the outer end of the one side (512a) and the outer end of the other side (512b).

In this way, the radially outer end of the tooth 512 is formed narrow in the circumferential direction, so that the end of the tooth 512 is sharp and can be stably and easily press-fitted into the inner circumferential surface of the reactor body 410 .

9 is a flowchart illustrating a method of manufacturing and installing a one-way clutch according to an embodiment of the present invention. A method of manufacturing and installing a one-way clutch is included in a method of manufacturing a torque converter.

Referring to FIG. 9 , a manufacturing and installation method 600 of a one-way clutch according to an embodiment may include an outer lace manufacturing step S610 and a press-fitting step S620 .

In the outer race manufacturing step ( S610 ), the outer race 510 may be manufactured. At this time, the outer peripheral surface of the outer race 510 may be formed/manufactured with teeth 512 protruding radially outward along the outer periphery of the outer race 510 .

The teeth 512 may be formed/manufactured to have one side 512a to which a rotational force in one direction (eg, counterclockwise) is applied and the other side 512b to which a rotational force in the other direction (eg, clockwise) is applied.

Here, one direction (eg, counterclockwise) corresponds to the direction in which the control unit 530 blocks the relative rotation of the outer race 510, and the other direction (eg, clockwise) indicates that the control unit 530 controls the outer race 510. ) may correspond to a direction that allows relative rotation of

In addition, the angles (a, b) between the one side (512a) and the other side (512b) formed with the outer circumferential surface of the outer race (510) according to the magnitude of the different forces applied to the one side (512a) and the other side (512b) of the tooth (512) (a, b) ) can be formed/manufactured so that the teeth 512 are different from each other.

For example, the teeth 512 may be formed/manufactured so that the angle of the side (eg, one side) to which a greater force is applied becomes larger. In addition, the teeth 512 may be formed so that the angle of the side to which a smaller force is applied (eg, the other side) becomes smaller.

Specifically, the teeth 512 are formed so that the angle (a) that one side 512a makes with the outer peripheral surface of the outer race 510 is greater than the angle (b) that the other side 512b makes with the outer peripheral surface of the outer race 510. can do.

Specifically, for example, the teeth 512 may be formed/manufactured so that the angle b formed by the one side 512a with the outer circumferential surface of the outer race 510 corresponds to 75 degrees to 90 degrees.

In addition, the teeth 512 may be formed/manufactured so that the angle between the other side 512b and the outer circumferential surface of the outer race 510 corresponds to 20 degrees to 45 degrees.

On the other hand, the teeth 512 may be formed/manufactured so that the angle c between one side 512a and the other side 512b of the teeth 512 corresponds to 45 degrees to 80 degrees.

In addition, the radially outer end of the tooth 512 can be formed/manufactured narrowly in the circumferential direction.

When the support part 534 is integrally formed with the outer race 510 , the support part 534 may also be formed/manufactured together.

On the other hand, the conventional outer race is manufactured / processed through a sintering process. Since the outer race 510 in which the teeth 512 are protruded can also be manufactured/processed through a sintering process, the outer race 510 in which the teeth 512 are protruded can be easily formed at low cost without an additional process.

In the press-fitting step ( S620 ), the outer race 510 may be press-fitted into the reactor body 410 . At this time, the teeth 512 of the outer race 510 may be press-fitted to the inner peripheral surface of the reactor body 410 .

On the other hand, the one-way clutch 500 according to an embodiment of the present invention is not only used in the torque converter 10, it can be used in various parts such as a transmission.

As described above, the present invention has been described with reference to the illustrated drawings, but the present invention is not limited by the embodiments and drawings disclosed in the present specification. It is obvious that variations can be made.

In addition, although the effects of the configuration of the present invention are not explicitly described and described while describing the embodiments of the present invention, it is natural that the effects predictable by the configuration should also be recognized.

10: torque converter
100: front cover 200: impeller
300: turbine
400: reactor
410: reactor body 420: reactor blade
430: retainer
500: one-way clutch
510: outer race 512: teeth
520: inner race
530: control unit 532: roller
534: support 536: spring
600: manufacturing and installation method of one-way clutch

Claims (8)

As a one-way clutch disposed between the first body and the second body to prevent rotation of the first body in one direction with respect to the second body and allow rotation in the other direction,
An outer race 510 coupled to the first body to rotate integrally, and a plurality of teeth 512 protruding radially outward along the outer periphery are integrally formed;
an inner race 520 coupled to the second body to rotate integrally, and arranged coaxially with the outer race 510; and
A control unit 530 disposed in the circumferential direction between the outer race 510 and the inner race 520; includes;
The tooth 512 has one side (512a) and the other side (512b) in the circumferential direction,
A rotational force is applied to the one side (512a) or the other side (512b) to rotate the outer race 510 in one direction or the other, respectively,
The control unit 530 blocks the relative rotation of the outer race 510 when the relative rotation direction of the outer race 510 with respect to the inner race 520 is the one direction, and the relative rotation of the outer race 510 in the other direction. allow,
One-way clutch (500), characterized in that the angle formed by the one side (512a) and the other side (512b) with the outer circumferential surface of the outer race (510) is different from each other.
The method according to claim 1,
One-way clutch (500), characterized in that the angle formed by the one side (512a) with the outer circumferential surface of the outer race (510) is greater than that of the other side (512b).
The method according to claim 1,
One-way clutch (500), characterized in that the angle between the one side (512a) and the outer peripheral surface of the outer race (510) is 75 to 90 degrees.
The method according to claim 1,
One-way clutch (500), characterized in that the angle formed by the other side (512b) with the outer peripheral surface of the outer race (510) is 20 degrees to 45 degrees.
The method according to claim 1,
The one-way clutch 500, characterized in that the angle between the one side (512a) and the other side (512b) is 45 to 80 degrees.
The method according to claim 1,
One-way clutch (500), characterized in that the radially outer end of the tooth (512) is formed narrowly in the circumferential direction.
The one-way clutch 500 of any one of claims 1 to 6; and
A torque converter (10) including a; as the first body, a reactor (400) comprising a reactor body (410) to which the teeth (512) are coupled to the inner circumferential surface.
In the manufacturing method of the torque converter (10) of claim 7,
an outer race manufacturing step (S610) of manufacturing the outer race 510; and
A method of manufacturing a torque converter comprising a; press-fit step (S620) of press-fitting the outer race (510) into the reactor body (410).

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