KR20090043176A

KR20090043176A - A continuously variable transmission

Info

Publication number: KR20090043176A
Application number: KR1020070108886A
Authority: KR
Inventors: 김선충
Original assignee: 주식회사 파워스
Priority date: 2007-10-29
Filing date: 2007-10-29
Publication date: 2009-05-06

Abstract

The present invention relates to a continuously variable transmission, and more particularly, to a continuously variable transmission configured to be integrally configured to control a clutch function and speed so as to be used in various fields such as a machine tool or an automobile.

In order to achieve the above object, the present invention provides a housing having a space formed to open in one direction, a housing covered with a cover member, an input unit for inputting external power into the housing, and a space portion of the housing. It is composed of a speed transmission unit for adjusting the speed of the power input by the input unit, a speed control unit for operating the speed transmission unit, and an output unit for outputting the speed adjusted in the speed transmission unit to the outside. It features.

CVT, Transmission, Clutch, Torque, Electric Motor

Description

Continuously variable transmission

The present invention relates to a continuously variable transmission, and more particularly, to a continuously variable transmission that can be used in various fields such as machine tools or automobiles by integrally configuring a shift policing capable of controlling a clutch function and speed.

In general, power-driven equipment such as machine tools or automobiles is used to change the speed and torque of the power input by using a transmission without using power transmitted from a power source. .

In order to perform this function, belt type and chain type, which are mechanical continuously variable transmissions, which are generally used in the related art, are mainly used.

However, the belt type and the chain type used in the conventional mechanical continuously variable transmission have the following problems.

In other words, the belt type transmission has a low belt tension, causing a slip. If the belt tension is high, the belt is overloaded, causing wear and foreign substances to enter the pulley and the ground of the belt. There was a problem that occurred.

In addition, the chain type transmission is continuous, but since the connection between the chain and the pulley is discontinuous, the impact sound occurs when the pulley is contacted, and the centrifugal force is increased due to the weight of the chain, which has a problem in that there is a limit in maximum speed and enlargement.

On the other hand, conventional mechanical continuously variable transmissions include a rotary cone plate connected to a ring, a system using a viscosity of oil between discs, and the like. This method takes up a lot of space because the device is made of large, separate bodies, there is a problem that the efficiency of power transmission falls.

The present invention has been made in order to solve the above disadvantages, the configuration to limit or control the delivery speed is integrally formed to reduce the volume and weight, as well as prevent excessive damage to the drive device Its purpose is to provide a continuously variable transmission that enables it.

In addition, the continuously variable transmission of the present invention occupies a small installation space when mounted on the main body of the motor, saves the installation space, and makes the overall size of the motor small, and at the same time provides an continuously variable transmission having excellent power efficiency. have.

In addition, the continuously variable speed transmission apparatus of the present invention further includes a speed control unit capable of adjusting torque, and is applicable to large-capacity speed control by the operation of the speed control unit, and an object thereof is to obtain a precise speed change.

The present invention for achieving the above object is a housing in which one direction is opened to form a space therein, an input unit for inputting external power into the housing, and a power unit installed in the space unit of the housing and input by the input unit. It is characterized in that the speed of the speed control unit is adjusted, the speed control unit is operable to perform the operation of the speed transmission unit, and the output unit for outputting the speed adjusted in the speed transmission unit to the outside.

Here, the input unit is provided with an input shaft to protrude one side to the outside of the housing, formed integrally with the input shaft is provided on the inside of the housing is provided as a driving body for transmitting external power to the speed transmission portion. It is done.

In addition, the speed shift part is provided in the inner central portion of the housing, the inner side is formed with a through-hole in which the output unit is mounted, the outer side is a fixed body formed with a mounting portion formed with an installation hole, and rotatably seated in the mounting portion of the fixed body A disk plate, a guide shaft mounted on the disk plate in a longitudinal direction to be spaced apart at predetermined intervals, and a fluid having a roller installed on the guide shaft to transmit power to an input unit to the disk plate. It features.

In addition, the speed shift portion is provided in the inner central portion of the housing, the inner side is formed with a through hole for mounting the output portion, the outer side has a fixing body formed with a mounting portion formed with a pair of installation holes, and a pair of formed in the mounting portion of the fixing body A disk plate rotatably seated in each of the installation holes, a guide shaft mounted in the longitudinal direction at a predetermined interval on the upper portion of the disk plate, and installed on the guide shaft to provide power to the input unit with each disk plate. Characterized in that consisting of a fluid having a roller for transmitting.

Here, the inner side of the disk plate is characterized in that the first bevel gear is provided to be located in the installation hole of the fixture.

The roller of the fluid may be provided to be in contact with the inner circumferential surface of the cylindrical body of the input shaft and the upper surface of the disk plate.

In addition, a support member is further provided between the input unit and the fixed body, and one side of the guide shaft is fixed, and the other side of the guide shaft is fastened to the cover member of the housing.

Here, the fixing body is formed in a triangular shape, the seating portion is formed on three surfaces. It is characterized in that the fluid is provided in each of the three mounting portion.

The speed adjusting part extends the guide shaft of the speed shifting part to protrude to the outside of the cover member to couple the driving gears, and is provided at a predetermined position on the outer circumferential surface of the housing to provide a motor having a motive gear meshing with the driving gears. It is installed, it characterized in that the lid is further provided to cover the drive gear and the motive gear.

Here, the driven gear is further provided with a driving gear to transfer the driving force between the drive gear fastened to the guide shaft.

In addition, the output unit is installed on the same line as the input shaft, one side is fitted into the through hole of the fixing body, the other side is provided with an output shaft to protrude to the outside of the housing, the output shaft is the first bevel of the disk plate A second bevel gear is engaged with the gear.

And, if the movement in any one direction of both sides with respect to the center of the disk plate is characterized in that the reverse torque is output.

The present invention configured as described above has the effect of precisely adjusting the rotational force (speed) by transmitting the power input to the input portion by the roller of the fluid to the disk plate to adjust the speed by the fluid. .

In addition, there is an effect that can be precisely controlled to flow on the guide shaft by allowing the fluid to flow on the guide shaft by a gear that is coupled to the guide shaft at the time of shifting, driven by a motor.

In addition, as the fluid moves in a direction selected from either side with respect to the center of the disk plate, the forward and reverse rotation of torque is obtained.

Hereinafter, with reference to the accompanying drawings for the continuously variable transmission according to 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 an enlarged cross-sectional view showing a line A-A of Figure 1, Figure 3 is a side view showing a continuously variable transmission according to the present invention.

As shown in FIGS. 1 to 3, the continuously variable transmission device 10 is formed in a cylindrical shape in which a space portion 102 is formed so that one side portion is opened therein, and covers a opened side portion of the space portion 102. There is provided a housing 100 consisting of a member 104.

In addition, an input unit 200 for inputting external power into the housing 100 is provided.

Here, the input unit 200 is provided with an input shaft 202 which is protruded to the outside of the housing 100 and the other side is provided on the inside, the input shaft 202 located inside the housing 100 A cylindrical body 204 formed in a cylindrical shape and having one side open.

Furthermore, the cylindrical body 204 is formed integrally with the input shaft 202 or is fixed by a separate fixing means.

In addition, the speed shifting unit 300 is installed in the space portion 102 of the housing 100, and is installed inside the cylindrical body 204 to shift the power input from the input shaft 202 of the input unit 200. Is provided.

Here, the speed transmission part 300 is provided in the inner central portion of the housing 100, the through hole 312 is formed on the inside, the outer portion is formed with a seating portion 314, the seating portion 314 Fixing body 310 is provided with an installation hole 316 associated with the through-hole 312 is provided.

In addition, the seating portion 314 of the fixing body 310 is provided with a disk plate 320 that is formed in a disc shape and rotatably seated.

Here, the first bevel gear 322 is provided to be fitted to the installation hole 316 in the lower portion of the central portion of the disk plate 320.

Further, a bearing 324 is further provided on the contact surface between the seating portion 314 of the fixing body 310 and the disk plate 320 so that the disk plate 320 can rotate smoothly.

In addition, the upper portion of the disk plate 320 is provided with a guide shaft 330 spaced apart at a predetermined interval in the longitudinal direction.

Here, the guide shaft 330 further includes a support member 334 between the input shaft 202 and the fixed body 310, and the support member 334 and the cover member 104 of the housing 100. Both sides are fastened and fixed respectively.

Further, a screw thread 332 is formed on the outer circumferential portion of the guide shaft 330, and the fastening direction fixed to the cover member 104 is fixed to protrude outward.

In addition, the fluid 340 having the roller 342 formed in contact with the inner circumferential surface of the cylindrical body 204 and the upper surface of the disk plate 320 to transmit the rotational force input from the input shaft 202 to the disk plate 320. ) Is provided.

Here, the fluid 340 is provided with a slide member 344 is screwed to the guide shaft 330 to be screwed to flow along the thread 332 in the longitudinal direction of the guide shaft 330, A bearing 346 is provided on an outer side of the slide member 344, and the roller 342 is mounted on an outer side of the bearing 346.

In addition, the fixing body 310 is formed in a triangular shape, and the seating portion 314 is formed on three surfaces, and the seating portion 314 has a disk plate 320, a guide shaft 330, and a fluid 340. Is installed in each seating portion 314 as a pair.

In this case, the fixing body 310 may be formed in various shapes such as a quadrilateral, a pentagon, etc. in addition to the triangular shape to more accurately transmit the rotational force input to the input shaft 202 to the output unit 500.

And, it is provided on the outer side of the housing 100, is provided on the other side of the input unit 200 is provided with a speed control unit 400 for adjusting the speed of the power input from the input unit 200.

Here, the speed adjusting unit 400 is fastened and fixed to the extension of the guide shaft 330 formed to extend to the outside of the cover member 104, the predetermined position on the outer peripheral surface of the housing 100 It is equipped with a motor (M) provided with a motive gear 404 meshing with the drive gear 402.

Furthermore, driven gears 406 are further provided between the driving gears 402 fastened and fixed to the extension portions of the plurality of guide shafts 330 so that rotational forces are transmitted to each other.

In addition, a lid 408 is further provided to cover the driving gear 402, the driving gear 404, the driven gear 406, and the motor M. The lid 408 is provided at a side portion of the housing 100. It is fixed by the fixing means.

Here, the guide shaft 330 is rotated by the power of the motor M, so that the guide shaft 330 rotates forward and backward by a chain using a chain wheel (not shown) in place of the drive gear 402, or a pulley (not shown). It may be provided so that it can be reversed by the belt.

In addition, the output unit 500 which is input to the input unit 200 and outputs the speed shifted from the speed transmission unit 300 to the outside is provided.

Here, the output unit 500 is installed on the same line as the input shaft 201, one side is fitted into the through hole 312 of the fixing body 310, the other side protrudes out of the housing 100 The output shaft 502 is provided, and the output shaft 502 is further provided with a second bevel gear 504 to which the first bevel gear 322 of the disc plate 320 is engaged.

Referring to the operational relationship for the continuously variable transmission according to the present invention configured as described above are as follows.

4 is a view showing an operation relationship of the continuously variable transmission according to the present invention, and is a view showing a state in which the torque is adjusted forward, and FIG. 5 is a view showing an action relationship of the continuously variable transmission according to the present invention, and the torque is adjusted It is a figure which showed the state to reverse rotation.

First, the continuously variable transmission device 10 of the present invention connects an external driving device (not shown) to the input shaft 202 of the input unit 200 so that the input shaft 202 is rotated by the driving device.

Accordingly, the roller 342 of the fluid 340 provided on the inner circumferential surface of the cylindrical body 204 of the input shaft 202 is rotated by the rotation of the input shaft 202.

At this time, the roller 342 of the fluid 340 is rotated in the state in which the roller 342 is located in the center of the disk plate 320 as shown in Figure 2, the disk plate 320 does not rotate The roller 342 is stopped by the cylindrical body 204 of the input shaft 202 in a state in which the rotation force becomes "0" and the torque transmission force is interrupted.

In this state, when the motor M of the speed adjusting unit 400 is operated, the driving gear 402 is rotated in one direction by the motive gear 404 meshed with the motor M, and the The driven gear 406 also rotates the remaining drive gear 402 in the same direction.

As the drive gear 402 rotates as described above, the guide shaft 330 rotates, and the fluid 340 is screwed to the guide shaft 330 by the rotation of the guide shaft 330. ) Will be moved in one direction.

Therefore, the torque of the power input to the input shaft 202 is adjusted as the fluid 340 moves while rotating in one direction.

That is, as shown in FIG. 4, the fluid 340 moves in one direction from the center of the disk plate 320 to rotate the disk plate 320 forward.

As shown in FIG. 5, when the fluid 340 moves in the other direction with respect to the disk plate 320, the disk plate 320 is reversed.

Therefore, as shown in FIG. 6, when the fluid 340 moves to one side with respect to the center point of the disk plate 320 based on the rotation of the fluid 340 in one direction, the disk plate 320 moves in one direction. It is possible to obtain a torque that is forward rotation to the forward rotation, and moving to the other direction, the disk plate 320 is to be reverse rotation to obtain a reverse rotation torque.

At this time, the speed of the rotational force is adjusted to the distance that the fluid 340 moves between the center and the outside of the disk plate 320 in accordance with the normal and reverse operation of the motor (M) of the speed adjusting unit 400.

When the fluid 340 is located at the center of the disk plate 320 as described above, torque transmission force becomes "0", and the fluid 340 is moved in both directions based on the center of the disk plate 320. As it moves toward the outside of the disk, the forward and reverse rotation and the fluid 340 moves to the outside of the disk plate 320 rotates at a low speed as the rotational force decreases, and moves toward the center of the disk plate 320 at a high speed. In this way, that is, the rotational speed for rotating the disk plate 320 by the fluid 340 moving to the center and the outside of the disk plate 320 is determined.

In addition, when the motor M is rotated in the reverse direction, the fluid 340 is shifted from a low speed rotation to a high speed rotation while moving from the outer side to the inner side of the disc plate 320 according to the guide shaft 330. When the fluid 340 is continuously moved to the center of the disk plate 320 and positioned in the center, the torque becomes "0" and the clutch operation is performed.

Further, even when the fluid 340 located in the center of the disk plate 320 is moved in any direction of the length of the guide shaft 330 by the operation of the motor M, the disk plate is shifted from high speed to low speed while the torque is shifted. The forward and reverse rotation is performed based on the position of the fluid 340 around the center 320.

On the contrary, when the motor M is operated in reverse, the moved fluid 340 moves from the outer side of the disk plate 320 to the center to shift the torque from low speed to high speed.

The torque shifted by the operation of the fluid 340 is transmitted to the output shaft 502 by the first and second bevel gears 322 and 504, so that the shifted torque is output to the outside.

Therefore, it is possible to cut off power only by its own internal configuration without using a separate clutch mechanism, and also to reduce volume and weight compared to a conventional transmission device using a clutch, and to prevent power loss by a clutch. do.

In addition, it is possible to obtain a torque that rotates forward and reverse by moving in either direction based on the center point of the disk plate 320.

7 is a cross-sectional view showing another embodiment of a continuously variable transmission according to the present invention.

As shown therein, the continuously variable transmission device 10 according to another embodiment of the present invention is provided inside the housing 100 and extends in the longitudinal direction to provide a pair of mounting holes 316 on the seating surface 314a ( A fixed body 310 having a 316a formed therein is provided, and the disc holes 320 and 320a are provided in the installation holes 316 and 316a of the fixed body 310, and the guide shafts 330 are respectively provided. The fluids 340 and 340a flowing in the diameters of the disk plates 320 and 320a of the respective disks are mounted.

In addition, a pair of second bevel gears 504 meshing with the first bevel gears 322 and 322a of the disc plates 320 and 320a are provided on the output shaft 502 of the output unit 500. 504a is provided.

The working relationship for the continuously variable transmission of the present invention configured as described above is made by the same method as in the former, and will be omitted here.

However, by having a pair of the speed transmission unit 300, when the torque transmitted from the input unit 200 to the torque transmitted from the speed transmission unit 300 to the output shaft 502 is transmitted safely, it is not a great force It can be delivered without.

In addition, by having a pair of speed shifting units 300, the shift of the torque input to the input shaft 202 is accurately shifted without error, thereby preventing unnecessary power loss.

In the above, a preferred embodiment of the continuously variable transmission according to the present invention has been described. However, the present invention is not limited thereto. It is possible and this also belongs to the present invention.

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

FIG. 2 is an enlarged cross-sectional view of a line A-A of FIG. 1. FIG.

Figure 3 is a side view showing a continuously variable transmission according to the present invention.

4 is a view illustrating an operation relationship of the continuously variable transmission according to the present invention, in which the torque is adjusted and the forward rotation is shown.

5 is a view illustrating an operation relationship of the continuously variable transmission according to the present invention, in which the torque is adjusted to reverse rotation.

Figure 6 is a graph showing the speed change according to the fluid position of the present invention.

7 is a sectional view showing another embodiment of the continuously variable transmission according to the present invention.

[Explanation of symbols on the main parts of the drawings]

10: continuously variable transmission 100: housing

200: input unit 202: input shaft

204: cylinder 300: speed transmission portion

310: fixed body 312: through hole

314: mounting portion 316, 316a: mounting hole

320, 320a: Disk plate 322, 322a, 504, 504a: Bevel gear

330: guide shaft 340, 340a: fluid

342: roller 400: speed control unit

402, 404, 406: gear 500: output

502: output shaft M: motor

Claims

A housing in which one direction is opened to form a space therein;

An input unit for inputting external power into the housing;

A speed transmission part installed in the space part of the housing to control the speed of the power input by the input part;

A speed control unit operable to perform an operation of the speed transmission unit;

Stepless speed change device characterized in that consisting of an output unit for outputting the speed adjusted by the speed transmission to the outside.

The method of claim 1,

The input unit is provided with an input shaft to protrude one side to the outside of the housing, is formed integrally with the input shaft is provided on the inside of the housing characterized in that provided as a driving body for transmitting external power to the speed transmission portion Continuously variable transmission.

The method of claim 1,

The speed shift part is provided in the inner central portion of the housing, the inner side is formed with a through hole for mounting the output portion, the outer side is a fixed body formed with a seating portion formed with an installation hole,

A disk plate rotatably seated on a seating portion of the fixture;

A guide shaft mounted on the disc plate in a longitudinal direction to be spaced apart at a predetermined interval;

Stepless speed change apparatus, characterized in that made of a fluid is provided on the guide shaft and a roller for transmitting the power of the input unit to the disk plate.

The method of claim 1,

The speed shift portion is provided in the inner central portion of the housing, the inner side is formed with a through-hole in which the output unit is mounted, the outer side is a fixed body formed with a mounting portion formed with a pair of installation holes,

A disk plate rotatably seated in each of the pair of installation holes formed in the seating portion of the fixed body;

Stepless speed change apparatus, characterized in that consisting of a fluid is provided on the guide shaft and a roller for transmitting the power of the input unit to each disk plate.

The method according to claim 3 or 4,

Stepless speed change apparatus, characterized in that the first bevel gear is provided in the inner portion of the disk plate to be located in the installation hole of the fixed body.

According to claim 5,

The roller of the fluid is continuously variable, characterized in that provided in contact with the inner peripheral surface of the cylindrical body of the input shaft and the upper surface of the disk plate.

The method of claim 6,

And a support member is further provided between the input unit and the fixed body so that one side of the guide shaft is fixed, and the other side of the guide shaft is fastened to the cover member of the housing.

The method of claim 7, wherein

The fixture is formed in a triangular shape and the seating portion is formed on three sides. Continuously variable speed gear, characterized in that the fluid is provided in each of the three mounting portion.

The method of claim 1,

The speed adjusting part extends the guide shaft of the speed shifting part to protrude to the outside of the cover member, and the driving gear is coupled, and a motor having a driving gear which is provided at a predetermined position on the outer circumferential surface of the housing and meshes with the driving gear is installed. And a lid configured to cover the drive gear and the motive gear.

The method of claim 9,

Stepless speed change apparatus, characterized in that the driven gear is further provided to transfer the driving force between the drive gear fastened to the guide shaft.

The method according to any one of claims 1 to 4 and 6 to 10,

The output unit is installed on the same line as the input shaft, one side is fitted into the through hole of the fixing body, the other side is provided with an output shaft to protrude to the outside of the housing,

The output shaft further comprises a second bevel gear that is engaged with the first bevel gear of the disk plate.

The method of claim 11,

Stepless speed change apparatus characterized in that the reverse torque is output when moved in any one direction of both sides with respect to the center of the disk plate.