KR0183070B1 - Clutch - Google Patents

Abstract

For the purpose of providing a clutch that can simplify the configuration and selectively transmit or cut power in both directions, or in either direction: the outer shaft (or outer race) is rotatably coupled to the outer side of the inner shaft (or inner race) so that both shafts In the case of forming a clutch intermittent between the inner shaft of the power transmission system which drives one shaft as the driving shaft and driving the other shaft and the driven shaft to control the power, the upper and lower shafts (or left and right) at a predetermined distance from the center of the shaft Cylinders respectively formed on both sides on the same line in a direction perpendicular to the axial direction, and flow paths for selectively supplying hydraulic pressure to the inside of the cylinder are formed, and the vertical plane and the obtuse angle with the vertical plane inward to the outer ends of the cylinders are formed. It has a cam surface formed in the state of the recess is formed to form a recess symmetrical mutually The inner shaft and; Arranged at both ends of the cylinder and stretched outward by the hydraulic pressure selectively supplied from the flow path according to the rotational direction of the driving shaft, the rollers are formed on the outer side of the piston so as to be located at the concave inlet portion of the inner shaft of the outer shaft and the cam surface. Provided is a clutch comprising a piston assembly inserted therebetween to provide power to the driven shaft by the wedge action.

Description

clutch

1 is a cross-sectional view of the clutch according to the present invention.

1a, b are a perspective view and a cross-sectional view of a piston assembly applied to the present invention.

3 is a partially enlarged cross-sectional view for explaining the operating state of the present invention.

4 is a cross-sectional view of the clutch operating state of the present invention.

5 is another embodiment according to the present invention.

6 is a cross-sectional view of a conventional multi-plate clutch.

* Explanation of symbols for main parts of the drawings

1: inner shaft 2: outer shaft

3, 4: piston assembly 30, 40: roller

31, 41: piston 32, 42: tension spring

300, 400: axis of rotation

[Industrial use]

The present invention relates to a clutch, and more particularly, to a clutch that is applied to an automatic transmission or other power transmission system for a vehicle that is simple in structure and in some cases may transmit or cut power in both directions.

[Prior art]

For example, a multi-plate clutch that transfers power while being arranged in a plurality of clutch plates and disks alternately with each other is used in motorcycles or automobile automatic transmissions.

Looking at the conventional configuration of such a multi-plate clutch, as shown in FIG. 6, dozens of clutch plates 103 are rolled over the inner ring concave portion 102 of the clutch retainer 101, and the outer ring concave portion of the hub 104 ( The clutch disc 106 is disposed between the clutch plates 103.

In addition, a piston 107 operated by hydraulic pressure is disposed inside the clutch retainer 101, and when hydraulic pressure is supplied into the cylinder 108, the clutch plate 103 is moved by the hydraulic pressure thereof and pushes the clutch plate 103 positioned inside. The power transmission is made while squeezed with the disk 106.

In the above, the outermost clutch plate 103 is prevented from being pulled out by the snap ring 109, and of course, friction materials are attached to both sides of the clutch disk 106.

[Problem to solve]

However, in the multi-plate clutch as described above, a large number of clutch plates and clutch discs are applied, which results in a large volume and complicated disadvantages in weight and cost.

Therefore, the present invention has been created as a means for solving the above conventional problems, the object of the present invention is to simplify the configuration, while bidirectional or left. In either direction, the present invention seeks to provide a clutch that can be applied to an automatic transmission for a vehicle to selectively transmit power.

[Means to solve the problem]

In order to realize the present invention, the outer shaft (or outer race) is rotatably coupled to the outer side of the inner shaft (or inner race) so that any one of both shafts is a driving shaft and the inner shaft of the power transmission system for driving the other shaft. In forming a clutch interposed between the outer shafts being driven to control the power,

Cylinders are formed respectively on both sides on the same line in the direction perpendicular to the axial direction to the upper and lower sides (or left and right) at a predetermined distance from the center of the shaft, and a flow path for selectively supplying hydraulic pressure to the inside of the cylinder, An inner shaft having a vertical surface inwardly at both ends of both cylinders, and a cam surface formed in a state in which the vertical surface and an obtuse angle thereof are indented to form a concave indentation which is mutually symmetrical;

Arranged at both ends of the cylinder and stretched outward by the hydraulic pressure supplied from the flow path selectively in accordance with the rotational direction of the driving shaft, the rollers are formed on the outer side of the piston so that the rollers located at the concave portion of the outer shaft Provided is a clutch comprising a piston assembly that transmits power to a driven shaft in both directions or in one selected direction by a wedging inserted therebetween.

In the piston assembly, the roller is rotatably assembled to the outside of the piston of the piston, the roller is rotatably assembled, the outer diameter of the rotating shaft for supporting the roller to allow the flow of the roller is smaller than the inner diameter of the support hole through which the rotating shaft Provided the formed clutch.

In the above, the roller provides a clutch in which three rollers are formed in pairs to increase the friction area and reduce the contact stress.

The lower side of the cam surface is provided with a clutch formed by embedding an elastic body such as rubber in the lower portion thereof so as to reduce the impact at the initial stage of power transmission.

[Action]

When the rotational force of the inner shaft is transmitted to the outer shaft by the above configuration, if a predetermined hydraulic pressure is supplied to the main flow path and its hydraulic pressure is supplied to the branch flow path, its hydraulic pressure pushes both piston assemblies outward while overcoming the elastic force of the tension spring. As such, when the piston assembly is pushed outward, the roller disposed at the front end thereof makes contact with the inner diameter of the outer shaft first. If the piston assembly continues to be pushed in this state, the roller descends on the inner surface of the outer shaft and makes contact with the cam surface. It is sandwiched between the inner diameter of the outer shaft and the cam face of the recess of the inner shaft.

When the roller is caught between the inner diameter of the outer shaft and the inner shaft cam surface as described above, the inner shaft and the outer shaft are integrally formed by the wedge action, and the rotational force of the inner shaft is transmitted to the outer shaft. When rotating clockwise, the hydraulic power is supplied to the piston assembly on the right side, and the roller on the right side transmits power by the wedge action. On the contrary, when the inner side rotates counterclockwise, the hydraulic pressure is supplied to the piston assembly on the left side. As the rollers perform wedge action to transmit power, the piston assembly can be operated independently according to the rotational direction of the inner shaft, thereby transmitting both forward and reverse rotations of the inner shaft.

Accordingly, it is possible to transfer the power of the inner shaft with a simple structure having a completely different structure from the prior art, and thus it is very preferable to apply to an automatic transmission of a vehicle in which a clutch should be installed in a narrow space.

EXAMPLE

EMBODIMENT OF THE INVENTION Hereinafter, it demonstrates based on attached drawing which preferred embodiment of this invention which can implement | achieve the above objective concretely.

1 is a cross-sectional view of the clutch according to the present invention, in which the outer shaft 2 (or outer race) is rotatably coupled to the outer side of the inner shaft 1 (or the inner race) so that both shafts 1 Any one of the shafts (2) is applied to the power transmission system for driving the other shaft as the driving shaft, as an example, interposed between the inner shaft (1) of the primary shaft and the outer shaft (2) of the driven shaft to power It will be cracked down.

That is, the inner shaft (1) and the cylinder (10) (11) and the cylinder (10) respectively formed on both sides of the same line in the direction of the axial direction to the vertical axis (or left and right) at a predetermined interval from the axis center, 10 (11) is provided with a charge 12, 13 for supplying the hydraulic pressure to the inner side, the outer end of the cylinder (10) (11), respectively, the vertical surface 141, 151 and its vertical surface (141) inward. 141 and the cam faces 142 and 152 formed in an obtuse angle are formed to be recessed portions 14 and 15 which are recessed to form symmetry.

In addition, both cylinders 10 and 11 have a piston assembly 3 and 4 mounted therein with a plurality of pairs of rollers 30 and 40 formed on the outside thereof. As shown in FIG. 2, the fixtures 310 and 410 protrude to the front side of the pistons 31 and 41 so that the rollers 30 and 40 are rotatably assembled and the rollers 30 and 40 thereof. The outer diameter d of the supporting shafts 300 and 400 is assembled in a state formed smaller than the inner diameter D of the supporting holes 311 and 411 through which the rotating shafts 300 and 400 pass. The difference allows the flow of the rollers 30 and 40.

In the above, the rollers 30 and 40 are formed in pairs to increase the frictional effect and reduce the contact stress in a large area. In the present invention, three pairs are used.

In addition, the inner ends of the pistons 31 and 41 are gripped by the tension springs 32 and 42, and the tension springs 32 and 42 are protrusions 320 and 420 protruding from the cylinder 10. And the projections 321 and 421 protruding from the pistons 31 and 41 exert a force for always pulling the pistons 31 and 41 inwards, and the outer ends of the pistons 31 and 41. The stop ring 33, 43 is coupled to limit the range in which the piston 31, 41 can be injected into the cylinder (10).

Accordingly, when the hydraulic pressure is supplied through each of the oil passages 12 and 13, both piston assemblies 3 and 4 expand outwardly, and the rollers 30 and 40 formed at the front end thereof have cam surfaces 142 and 152. The inner shaft of the outer shaft (2) is sandwiched between the inner shaft (1) and the outer shaft (2) by the wedge action is a power transmission is made, at this time, the piston assembly to both sides of the cylinder (10) (11) The arrangement of (3) and (4) is to allow the clutch to be performed regardless of the rotational direction of the inner shaft 1 or to be used as a one-way clutch.

In FIG. 1, the clutches formed as described above are arranged in two upper and lower positions. However, when the required power transmission torque is large, two or more clutches are equally spaced on the inner shaft 1 in the same structure as described above. The cam surfaces 142 and 152 may be buried under the elastic bodies 143 and 153 such as rubber to have flexibility in contact with the rollers 30 and 40.

3 is a cross-sectional view for explaining the operation of the present invention, in order to transmit the rotational force of the inner shaft (1) to the outer shaft (2) by supplying a predetermined hydraulic pressure to the flow path (12) (13) to the cylinder (10) ( 11) to be fed into.

Then, the hydraulic pressure supplied into the cylinders 10 and 11 pushes both piston assemblies 3 and 4, which were in the same state as the solid line while overcoming the elastic force of the tension springs 32 and 42, to the outside. Likewise, when the piston assembly 3, 4 is pushed outward, the rollers 30 and 40 disposed at the front end thereof are first brought into contact with the inner diameter of the outer shaft 2, and the piston assembly 3 continues in this state. When (4) is pushed, the rollers 30 and 40 descend on the inner surface of the outer shaft 2 to come into contact with the cam surfaces 142 and 152, and the inner diameter portion of the outer shaft 2 is like the imaginary line of FIG. It is sandwiched between the cam faces 142 and 152 of the recesses 14 and 15 of the inner shaft.

In the above, the rollers 30 and 40 can be moved downward by the difference in the inner diameter of the support holes 311 and 411 and the outer diameter of the rotation shaft 300 and 400. When the rollers 30 and 40 are sandwiched between the inner diameter of the outer shaft 2 and the inner shaft cam surfaces 142 and 152,

By the wedge action, the inner shaft 1 and the outer shaft 2 are integrated so that the rotational force is transmitted to the outer shaft 2 regardless of the rotational direction of the inner shaft 1.

When the power is transmitted to only one direction, the hydraulic pressure may be supplied to the cylinder. When the inner shaft 1 rotates clockwise in the drawing, the hydraulic pressure may be supplied to the cylinder 10 on the left side. When supplied, the left axle piston assembly 3 moves outward and pushes the roller 30 outward to transmit power by the wedge action. On the contrary, when the inner shaft 1 rotates counterclockwise, the right side is used to transmit power. The hydraulic pressure is supplied to the cylinder 11 of the piston assembly 4 on the right side to move the roller 40 is a wedge action to transfer power.

As described above, the clutch of the present invention supplies hydraulic pressure to all the cylinders 10 and 11 so that the inner shaft 1 rotates in any direction regardless of the direction thereof, and the piston assembly 3 and 4 can be transmitted. It can be used as a one-way clutch by operating independently according to the rotational direction of the inner shaft (1).

The above table summarizes the operating conditions as above.

5 is another embodiment according to the present invention, in which the present invention arranges the piston assemblies 3a and 4a to the inner shaft 1, while in other embodiments, the piston assemblies 3a and 4a are arranged on the outer shaft 2; )

That is, the piston assembly 3a is supplied with hydraulic pressure supplied to the tolls 12a and 13a by arranging the piston assembly frames 3a and 4a on both sides of the cylinder 10a formed at an obtuse angle on the outer shaft 2. By selectively pushing) 4a, the rollers 30a and 40a disposed at the tip thereof are pushed inward and the cam surfaces 142a and 152a which are the inner surfaces of the outer shaft 2 and the inner shaft 1 and the like. Wedge action is sandwiched between the sides to make power transmission.

In addition, when the inner shaft 1 rotates clockwise in the same manner as the present invention during power transmission, the roller 30a on the right side transmits power by the wedge action, and the inner shaft 1 counterclockwise. When abduction into the room, the roller 20a on the left side performs wedge action and transmits power.

[effect]

As described above, according to the present invention, by installing a clutch operated by hydraulic pressure without using a plurality of clutch plates and disks on a portion of the inner shaft, the invention can be simply and bi-directionally or can be transmitted in any one selected direction.

Claims (6)

The outer shaft (or outer race) is rotatably coupled to the outer side of the inner shaft (or inner race) so that one of the two shafts is a synchronous shaft, interposed between the inner shaft of the power transmission system and the driven outer shaft that drives the other shaft. And forming a clutch to control power, the cylinders being formed on both sides on the same line in the direction orthogonal to the axial direction as the upper and lower sides (or the left and right sides) at predetermined intervals from the center of the shaft, and the hydraulic pressure inside the cylinder. An inner shaft having a flow path for selectively supplying the inner surface of the cylinder, the inner shaft having a vertical surface inwardly and an cam surface formed in an obtuse angle with the vertical surface of the two cylinders inwardly to form mutually symmetrical recesses; Arranged at both ends of the cylinder and stretched outward by the hydraulic pressure supplied from the flow path selectively in accordance with the rotational direction of the driving shaft, the rollers are formed on the outer side of the piston so that the rollers located at the concave portion of the outer shaft And a piston assembly that transmits power to the driven shaft in both directions or in one selected direction by a wedge action inserted therebetween. According to claim 1, The piston assembly protrudes the fixture to the outside of the piston, the roller is rotatably assembled, the inner diameter of the support hole through which the rotating shaft passes through the outer diameter of the rotating shaft for supporting the roller to enable the flow of the roller Smaller clutch. The clutch of claim 1, wherein the roller is formed by pairing three rollers in order to increase the friction area and reduce contact stress. The clutch according to claim 1, wherein the cam face is formed by embedding an elastic body such as rubber under the cam face to have flexibility. 2. The clutch according to claim 1, wherein the right cam surface is a right inclined surface, and the left cam surface is a left inclined surface. 2. The clutch according to claim 1, wherein a piston assembly is formed on the outer shaft to form a concave portion having a cylinder and a cam surface on the outer shaft, thereby forming a piston assembly.