KR101035207B1 - Continuously variable transmission - Google Patents

Abstract

PURPOSE: A continuously variable transmission is provided to increase torque between an input disk and an output disk by controlling the frictional force of a drive roller. CONSTITUTION: A housing(10) is integrated with first and second cases(10a,10b). An input shaft(12) and an output shaft(14) are installed in a first case and a second case of the housing to be rotatable. A casing block(16) is integrated between the first and second cases of the housing. A holder member guide(18) is integrated with the inner surface of the casing block through a shaft. An input disk(20) is integrated with the input shaft inside the housing.

Description

CVT {CONTINUOUSLY VARIABLE TRANSMISSION}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuously variable transmission, and in particular, it is easily rotated at various angles so as to frictionally contact an input disk and an output disk while driving to simplify the continuously variable transmission means of a drive roller which shifts the rotational force of the input disk and transmits the output disk to the output disk. In addition, the present invention relates to a continuously variable transmission having an improved structure to adjust the friction of the drive roller.

In general, the transmission of the vehicle has a function of transmitting the driving force of the engine, which includes a manual transmission in which the driver directly selects a shift stage at the driver's will, and automatically shifts according to the driving conditions of the vehicle. It is divided into the automatic transmission which consists of, and the continuously variable transmission which continuously performs a continuous shift without a specific speed change area | region between each transmission stage.

In the above-described transmission device, the present invention relates to a continuously variable transmission having a great advantage in terms of fuel economy, power transmission performance, and weight by supplementing the disadvantages of the automatic transmission using hydraulic pressure, and the continuously variable transmission thereof has an input shaft. Belt driving methods using a displacement of the pulley mounted on the output shaft, and a toroidal type (Toroidal Type) are mainly used.

In particular, the toroidal continuously variable transmission includes an input disk and an output disk, and a drive roller disposed between them and rotated to frictionally contact the output disk through the input disk to transmit power.

However, the continuously variable transmission according to the related art has a problem in that the structure of the device for rotating the drive roller rotated to be frictionally contacted between the input disk and the output disk has a problem that the rotation angle of the drive roller cannot be easily adjusted. At the time of wear of the drive roller, there is a problem in that the frictional force is reduced so that the rotational force of the input disk is not changed to smoothly transfer to the output disk.

The present invention has been made to solve the problems of the prior art as described above, an object of the present invention is to simplify the continuously variable transmission means of the drive roller to transfer the rotational force of the input disk to the output disk according to the driving state and to easily The present invention relates to a continuously variable transmission that can adjust and easily adjust the friction force of a drive roller.

In order to solve the above technical problem, the present invention,

A housing in which the first case and the second case which are dividedly formed to correspond to each other are integrally coupled to each other, and the input shaft and the output shaft are rotatably installed in the first and second cases;

A casing block integrally coupled between the first and second cases of the housing;

A holder member guide integrally coupled to the inner circumference of the casing block via a shaft;

An input disk disposed in the housing so as to be integrally coupled to the input shaft and having a friction surface having a curved surface at an inner circumferential side on one side thereof;

An output disk having a friction surface corresponding to the input disk and disposed to face the input disk at a predetermined interval in a housing and integrally coupled with the output shaft; And

At least one holder member coupled to the holder member guide and the shaft so as to be rotatably disposed between the friction surface of the input disk and the output disk, and at both ends thereof having gears for engaging with each other between the friction surfaces, the holder member and the shaft. A drive roller which is rotatably mounted and rotates at a predetermined rotational angle between friction surfaces to shift the rotational force of the input disk to the output disk by rolling rotation by frictional contact, and a holder of any one of the holder members. It is installed on the outside of the housing so as to be connected to the member 42a, and is composed of an angle adjusting lever for adjusting the rotation angle of the drive roller by integrally rotating the other holder members through one holder member to shift the rotational force of the input disk. Continuously variable means for delivery to the output disc .

In addition, the holder member is characterized in that two to eight are provided between the input disk and the output disk.

In addition, the gear portion is characterized in that the bevel gear is engaged.

In addition, the angle adjustment lever is characterized in that it is adjusted by manual control or electronic control.

In addition, the housing is characterized in that the friction force adjusting member for adjusting the friction force of the drive roller which is rotated in contact with the friction by the friction between the input disk and the output disk is provided.

In addition, the friction force adjusting member is provided between the output shaft and the output disk elastic member for elastically supporting the output disk in the input disk direction,

An elastic holding member installed in contact with the elastic member at an end of the input shaft to maintain the elasticity of the elastic member;

It is coupled to the input shaft to penetrate the elastic holding member, characterized in that consisting of an elastic adjusting bolt for adjusting the elasticity of the elastic member by moving the elastic holding member during rotation.

According to the continuously variable transmission according to the present invention, the configuration of the continuously variable transmission means for shifting the rotational force of the input disk to be transmitted to the output disk can be easily adjusted during shifting, and a useful effect that can contribute to the miniaturization of the device is provided. have.

In addition, by applying an elastically adjustable structure to the output disk to easily adjust the friction of the drive roller, the friction of the drive roller in friction contact between the input disk and the output disk is always kept constant or the input disk and the output disk There is also an effect that can increase the rotational torque of the liver.

Hereinafter, with reference to the accompanying drawings for the continuously variable transmission according to a preferred embodiment of the present invention will be described in detail.

1 is a cross-sectional view showing a continuously variable transmission according to the present invention, Figure 2 is a cross-sectional view taken along the line AA shown in Figure 1, Figure 3 shows a holder member mounted with a drive roller provided in the continuously variable transmission according to the present invention. 4 and 7 are cross-sectional views illustrating various shifting states of the continuously variable transmission according to the present invention.

The continuously variable speed shift apparatus according to the preferred embodiment of the present invention includes a housing 10, an input disk 20, an output disk 30, and a continuously variable transmission means 40 as illustrated in FIGS. 1 to 3.

In more detail, the housing 10 is composed of a first case 10a and a second case 10b which are divided to correspond to each other, and the first and second cases 10a and 10b are known bolts or the like. It is coupled integrally by the fastening means. In the housing 10, a space 11 is formed to rotatably arrange the input disk 20 and the output disk 30.

The input shaft 12 and the output shaft 14 are rotatably provided at both sides of the housing 10. That is, the input shaft 12 is rotatably installed in the first case 10a, and the output shaft 14 is rotatably installed in the second case 10b. In this case, the first and second cases 10a and 10b of the housing 10 are provided with a plurality of bearings for supporting rotation of the input shaft 12 and the output shaft 14, which are input shafts 12 in the continuously variable transmission. ) And the description thereof will be omitted since it is typically provided to support the rotation of the output shaft 14.

A casing block 16 is provided between the first and second cases 10a and 10b of the housing 10. The casing block 16 is formed in a ring shape having the same diameter as the first and second cases 10a and 10b and integrally coupled between the first and second cases 10a and 10b by a fastening means such as a known bolt. do.

A holder member guide 18 is provided on the inner circumference of the casing block 16. The holder member guide 18 is fixed to the inner circumference of the casing block 16 via the shaft 17 and then integrally coupled by a fastening means such as a known bolt. The holder member guide 18 is for rotatably installing the holder members 42a, 42b, 42c, 42d of the continuously variable transmission means 40.

The input disk 20 is arranged to be integrally coupled to the input shaft 12 in the space 11 of the housing 10. One side of the input disk 20 is provided with a friction surface 22 formed to have a curve toward the inner peripheral side. The friction surface 22 may be formed in a hemispherical shape, a semi-elliptic shape, but is not limited thereto. The input disk 20 is rotated by the rotational force transmitted from the input shaft 12.

The output disk 30 is arranged to be integrally coupled to the output shaft 14 in the space 11 of the housing 10. In this case, the output disk 30 is disposed in the space 11 so as to face the input disk 20 at a predetermined interval. One side of the output disk 30 is provided with a friction surface 32 formed to correspond to the friction surface 22 of the input disk 20.

That is, the friction surface 32 of the output disk 30 is disposed to correspond to the friction surface 22 of the input disk 20, so that the friction surfaces 22 and 32 provided therebetween have a perfect shape. The output disk 30 is rotated by receiving the rotational force from the continuously variable transmission means 40 for changing the rotational force of the input disk 20.

The continuously variable transmission means 40 transmits the rotational force of the input disk 20 to the output disk 30, and for this purpose, friction surfaces 22 and 32 of the input disk 20 and the output disk 30 are provided. At least one holder member (42a, 42b, 42c, 42d) coupled via the holder member guide (18) and the shaft (17) so as to be rotatably disposed between the holder members (42a, 42b, 42c, 42d); Drive roller 46 for shifting the rotational force of the input disk 20 to the output disk 30 by rolling rotation by frictional contact, and rotating it at a predetermined rotational angle between the friction surfaces 22 and 32. And an angle adjusting lever 48 installed in the housing 10 to integrally rotate the holder members 42a, 42b, 42c, and 42d, for adjusting the rotational angle of the drive roller 46.

That is, the continuously variable transmission means 40 integrally rotates the holder members 42a, 42b, 42c, and 42d by the rotation of the angle adjustment lever 48, so that the friction surfaces of the input disk 20 and the output disk 30 ( 22 and 32 are configured to variously adjust the rotation angle of the drive roller 46 to be rotated in contact with the friction and to transmit the rotational force of the input disk 20 to the output disk 30 through this.

Holder members 42a, 42b, 42c, 42d are holder member guides 18 coupled between the first and second cases 10a, 10b of the housing 10 so as to be rotatably disposed between the friction surfaces 22, 32. At least one is coupled via a shaft 43. At this time, the shaft 43 is integrally formed at both ends of the holder member (42a, 42b, 42c, 42d) is rotatably coupled to the holder member guide (18).

The holder members 42a, 42b, 42c, and 42d are connected to each other via the gear part 44 so as to be integrally rotated when the angle control lever 48 rotates. The gear portion 44 is provided at both edges of the holder members 42a, 42b, 42c, and 42d and is integrally coupled by fastening means such as known fixing pins. At this time, each gear portion 44 is engaged with each other by a bevel gear method to connect the holder members (42a, 42b, 42c, 42d).

Thus, the holder members 42a, 42b, 42c, and 42d disposed between the friction surfaces 22 and 32 of the input disk 20 and the out-hole disk 30 are connected to each other by the gear part 44, so that the angle adjusting lever When the holder member 42a is rotated by the 48, the other holder members 42b, 42c, and 42d may be integrally rotated.

The holder members 42a, 42b, 42c, and 42d may be provided with two to eight between them to increase the rotational force of the input disk 20 and the output disk 30.

That is, when less than two holder members are provided between the input disk 20 and the output disk 30, the rotational force of the input disk 20 by the input shaft 12 may be shifted and transmitted to the output disk 30. However, since the rotational force of the driver roller 46 is not smoothly transmitted to the output disk 30 by the unstable arrangement structure, it is not preferable.

In addition, when eight or more holder members are provided between the input disk 20 and the output disk 30, when the rotational force of the input disk 20 by the input shaft 12 is shifted, the output disk 30 has a strong torque. Although it is possible to transmit the rotational force, as the volume of the housing 10 is increased by a large number it is not preferable because the mountability may be reduced.

Accordingly, the holder members 42a, 42b, 42c, and 42d have a rotational force due to the shift of the drive roller 46 due to a stable arrangement between the friction surfaces 22 and 32 of the input disk 20 and the output disk 30. It is preferable that four are provided in consideration of the transportability and the mountability according to the volume of the housing 10.

That is, when four holder members 42a, 42b, 42c, 42d are provided between the input disk 20 and the output disk 30, the holder members 42a, 42b, 42c, 42d are formed of the housing 10. The friction surfaces of the input disk 20 and the output disk 30 are provided by providing a structure arranged so as to correspond to each other between the friction surfaces 22 and 32 on the basis of the center portion and meshing with each other by the gear portion 44. It is to be able to satisfy the constant rotational force transmission and the miniaturization of the housing 10 according to the shift of the drive roller 46 by a stable arrangement between the 22, 32.

The drive roller 46 has a disk shape and is rotatably mounted to the holder members 42a, 42b, 42c, and 42d via the shaft 47. At this time, a bearing is provided between the drive roller 46 and the shaft 47 for supporting the friction surfaces 22 and 32 so as to be rotated in contact with the friction surface. Such a bearing is typically used to support the rotation of the drive roller 46. Since it is provided with a description thereof will be omitted.

The angle adjusting lever 48 is any one of the holder members 42a, 42b, 42c, and 42d disposed between the friction surfaces 22 and 32 of the input disk 20 and the output disk 30. It is installed on the outside of the housing 10 to be connected to. The angle adjustment lever 48 rotates the other holder members 42b, 42c, and 42d integrally via one connected holder member 42a so that the drive roller 46 rotates variously between the friction surfaces 22 and 32. Rotate at an angle, for example, neutral, low speed, medium speed, high speed, or the like. At this time, the angle adjustment lever 48 may be configured to make the angle conversion by manual control or electronic control through a separate device.

In addition, in the housing 10, a frictional force adjusting member 50 for adjusting the frictional force of the drive roller 46 which is in rolling contact with the friction surfaces 22 and 32 of the input disk 20 and the output disk 30. ) Is provided. To this end, the friction force adjusting member 50 is provided between the output shaft 14 and the output disk 30, the elastic member 52 for elastically supporting the output disk 30 in the direction of the input disk 20, and the elastic member The elastic holding member 54 is installed in contact with the elastic member 52 at the end of the input shaft 12 to maintain the elasticity of the 52, and coupled with the input shaft 12 to pass through the elastic holding member 54 and rotated It is composed of an elastic adjustment bolt 56 for adjusting the elasticity of the elastic member 52 by moving the elastic retaining member 54.

That is, the friction force adjusting member 50 is an elastic member 52 for elastically supporting the output disk 30 as the elastic holding member 54 moving in the longitudinal direction of the input shaft 12 according to the rotation of the elastic adjusting bolt 56. By maintaining the elasticity or by adjusting the strength of the frictional contact between the input disk 20 and the output disk 30 is configured to control the friction force of the drive roller 46 rolling.

Meanwhile, reference numeral 49 denotes a bush installed in the housing 10 to rotatably support the shaft 43 when the holder member 42a connected through the angle adjusting lever 48 and the shaft 43 is rotated. It is shown.

The operation of the present invention having such a configuration will now be described.

In the continuously variable transmission according to the preferred embodiment of the present invention, when the input disk is rotated by the input shaft 12 as described above, the friction surfaces 22 and 32 of the input disk 20 and the output disk 30 are rotated. The output disk 30 is rotated by the rolling rotation by the frictional contact of the disposed drive rollers 46 to transmit the rotational force to the output shaft 14. At this time, according to the rotation operation of the angle control lever 48 of the housing 10, the other holder members 42b, 42c, 42d are integrally rotated through one holder member 42a connected to the angle control lever 48. And the rotational force of the input disk 20 is shifted by the drive roller 46 which is rotated at a predetermined rotational angle between the friction surfaces 22 and 32 along the holder members 42a, 42b, 42c, 42d. It is a structure that is delivered to).

First, as shown in FIG. 4, when the drive roller 46 is rotated to be parallel with the input disk 20 and the output disk 30, the rotational force of the input disk 20 is output disk 30. It will not be delivered to.

That is, the drive roller 46 is in a neutral mode in which the friction surfaces 22 and 32 between the input disk 20 and the output disk 30 are not in frictional contact, thereby transmitting the rotational force of the input shaft 12 to the output shaft 14. It will not be possible.

When the neutral mode is converted to the low speed mode as described above, as shown in FIG. 5, the angle control lever 48 is rotated in the low speed mode. Then, since the other holder members 42b, 42c, and 42d are integrally rotated through one holder member 42a connected to the angle control lever 48, the drive roller 46 is rotated at a low rotational angle. do.

That is, the holder members 42a, 42b, 42c, and 42d are engaged with each other via the gears 44 provided at both ends between the friction surfaces 22 and 32 of the input disk 20 and the output disk 30. By being connected, other holder members 42b, 42c, and 42d are rotatable integrally via the holder member 42a connected thereto during the rotation operation of the angle control lever 48.

In this way, the drive roller 46 is a low-speed rotation angle, that is, the lower end of the drive roller 46 by the holder member (42a, 42b, 42c, 42d) in the low speed mode of the angle control lever 48 input disk 20 Of the friction surfaces 22 and 32 between the input disk 20 and the output disk 30 so as to be rotated to be in contact with the friction surface 22 of the outer surface and the upper end thereof to contact the friction surface 32 of the output disk 30. ) Frictional contact with the rolling.

Accordingly, the rotational force of the input disk 20 by the input shaft 12 is shifted so as to be decelerated by the drive roller 46 and transmitted to the output disk 30, whereby the output shaft 14 is decelerated.

When the low speed mode is converted to the medium speed mode, the angle adjusting lever 48 is rotated to the medium speed mode as shown in FIG. 6. Then, the other holder members 42b, 42c, and 42d are integrally rotated through one holder member 42a connected to the angle control lever 48, so that the drive roller 46 is rotated at an intermediate rotation speed. do.

In this way, the drive roller 46 is rotated by the holder member (42a, 42b, 42c, 42d) in the medium speed mode of the angle control lever 48, the rotation angle of the medium speed, that is, in a horizontal state, both ends of the input disk 20 And friction surfaces 22 and 32 between the output disk 30 and rolling.

Accordingly, the rotational force of the input disk 20 by the input shaft 12 is shifted so as to be speeded up by the drive roller 46 and transmitted to the output disk 30, so that the output shaft 14 is subjected to medium speed rotation.

When the medium speed mode is converted to the high speed mode, as shown in FIG. 7, when the angle adjusting lever 48 is rotated in the high speed mode, one holder member 42a connected to the angle adjusting lever 48 is removed. Since the other holder members 42a, 42b, 42c, 42d are rotated integrally as a medium, the drive roller 46 is rotated at a high rotational angle.

In this way, the drive roller 46 is rotated at a high speed by the holder members 42a, 42b, 42c, and 42d in the high speed mode of the angle adjusting lever 48, that is, the lower end of the drive roller 46 is connected to the output disk 30. The friction surfaces 22 and 32 between the input disk 20 and the output disk 30 are rotated to be in contact with the friction surface 32 and the upper end thereof to be in contact with the friction surface 22 outside of the input disk 20. The two ends are in frictional contact with each other to make rolling rotation.

Accordingly, the rotational force of the input disk 20 by the input shaft 12 is shifted to be high speed by the drive roller 46 and transmitted to the output disk 30, whereby the output shaft 14 is rotated at high speed.

As such, the present invention shifts the rotational force of the input disk 20 and rotates the drive roller 46 rotated at a predetermined rotational angle to transmit the output disk 30 to the angle adjusting lever 48 and the holder members 42a, 42b, 42c. By enabling angle conversion by (42d), the configuration of the continuously variable transmission means 40 for shifting and outputting the input rotational force can be simplified.

In addition, when the rotational force of the input disk 20 is shifted and transmitted to the output disk 30, the other holder members 42b, 42c, and 42d are rotated through the one holder member 42a by the rotation of the angle adjusting lever 48. The rotation angle of the drive roller 46 which changes the rotational force at the friction surfaces 22 and 32 between the input disk 20 and the output disk 30 by rotating them integrally, so that the rotational force can be continuously controlled. The shift means 40 can be easily adjusted.

On the other hand, by providing a frictional force adjusting member 50 in the housing 10, the frictional force between the input disk 20 and the output disk 30 can be easily adjusted to the frictional force of the drive roller 46 rolling rolling will be.

That is, the friction force adjusting member 50 supports the elastic member 52 with the elastic retaining member 54 fixed to the end of the input shaft 12 by the elastic adjusting bolt 56 to provide a constant elasticity to the output disk 30. As such, the drive roller 46, which is in frictional contact with the friction surfaces 22 and 32 of the input disk 20 and the output disk 30, rotates in a rolling manner, can always maintain a constant frictional force by the friction force adjusting member 50. have. Accordingly, even when the drive roller 46 is worn, it is possible to transmit a uniform rotational force between the input disk 20 and the output disk 30.

In addition, by increasing the elasticity of the elastic member 52 by the elastic holding member 54 is moved in the direction of the output disk 30 in accordance with the rotation of the elastic adjustment bolt 56 to increase the friction force of the drive roller 46 Rotational torque between the disk 20 and the output disk 30 can be increased.

The present invention has been described above by way of example, but the present invention is not limited to the above-described embodiment, and those skilled in the art to which the present invention pertains without departing from the gist of the present invention claimed in the claims. Anyone can make a variety of variations.

1 is a cross-sectional view showing a continuously variable transmission according to the present invention,

2 is a cross-sectional view taken along the line A-A shown in FIG.

3 is a perspective view illustrating a holder member to which a drive roller provided in the continuously variable transmission according to the present invention is mounted, and

4 to 7 are cross-sectional views illustrating various shifting states of the continuously variable transmission apparatus according to the present invention.

<Explanation of symbols for main parts of drawing>

10: housing 16: casing block

18: holder member guide 20: input disk

22: friction surface 30: output disk

32: friction surface 40: continuously variable transmission means

42a, 42b, 42c, 42d: Holder member 44: Gear portion

46: drive roller 48: angle adjustment lever

50: frictional force adjusting member 52: elastic member

54: elastic holding member 56: elastic adjusting bolt

Claims (6)

The first case 10a and the second case 10b, which are dividedly formed to correspond to each other, are integrally coupled to each other, and the input shaft 12 and the output shaft 14 rotate on the first and second cases 10a and 10b. A housing 10 possibly installed; A casing block 16 integrally coupled between the first and second cases 10a and 10b of the housing 10; A holder member guide 18 integrally coupled to the inner circumference of the casing block 16 via a shaft 17; An input disk (20) disposed in the housing (10) to be integrally coupled with the input shaft (12) and having a friction surface (22) having a curve on an inner circumferential side on one side thereof; An output disk 30 having a friction surface 32 corresponding to the input disk 20 and disposed to face the input disk 20 at a predetermined interval in the housing 10 and integrally coupled to the output shaft 14; And The holder member guide 18 and the shaft 43 are coupled to each other so as to be rotatably disposed between the friction surfaces 22 and 32 of the input disk 20 and the output disk 30, and at both ends thereof, the friction surfaces 22, 32. At least one holder member (42a, 42b, 42c, 42d) having a gear portion 44 to be engaged with each other between the 32, and the holder member (42a, 42b, 42c, 42d) and the shaft 47 Drive for rotationally mounted and rotated at a predetermined rotation angle between the friction surfaces 22 and 32 to transfer the rotational force of the input disk 20 to the output disk 30 by rolling rotation by frictional contact. It is installed on the outside of the housing 10 so as to be connected to the roller 46 and any one of the holder members 42a, 42b, 42c, and 42d, and the other one of the holder members 42a. Angle adjustment for adjusting the rotation angle of the drive roller 46 by integrally rotating the holder members 42b, 42c, 42d Member 48 is composed of continuously-variable transmission device, characterized in that consists of the continuously-variable shifting means 40 for shifting to the rotational force of the input disk 20 to pass to the output disk (30). The method of claim 1, The holder member (42a, 42b, 42c, 42d) is continuously variable, characterized in that provided with two to eight between the input disk (20) and the output disk (30). The method of claim 2, The gear unit 44 is a continuously variable gear characterized in that the bevel gear is engaged. The method of claim 3, The angle control lever 48 is a continuously variable transmission, characterized in that adjusted by manual control or electronic control. The method according to any one of claims 1 to 4, The housing 10 is provided with a frictional force adjusting member 50 for adjusting the frictional force of the drive roller 46 is rotated in contact with the friction between the input disk 20 and the output disk 30 by friction. Continuously variable transmission. The method of claim 5, The friction force adjusting member 50 is provided between the output shaft 14 and the output disk 30, the elastic member 52 for elastically supporting the output disk 30 in the direction of the input disk 20, An elastic holding member 54 installed in contact with the elastic member 52 at an end of the input shaft 12 to maintain the elasticity of the elastic member 52, and Combining with the input shaft 12 to penetrate the elastic holding member 54, characterized in that consisting of an elastic adjusting bolt 56 to adjust the elasticity of the elastic member 52 by moving the elastic holding member 54 when rotating Continuously variable transmission.

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