KR100863346B1 - A continuously variable transmissio - Google Patents

Abstract

A continuously variable transmission is provided to accurately control a distance between laces by using a worm wheel and a worm gear during a speed shifting process. A continuously variable transmission includes a housing(100), a speed shifting adjuster(300), an input unit(200), an output unit(400), and a motor(500). The housing has an inner space. The speed shifting adjuster is arranged in an inner space of the housing and includes a cylinder and a speed shifter. The speed shifter is arranged inside the cylinder in order to change the speed. A pressing unit is coupled with an inner side of the cylinder and arranged in front of the speed shifter. A speed adjuster is coupled with a front portion of the pressing unit. One side of the speed shifter is coupled with the speed shifter. The input unit applies an external power to the speed shifting adjuster. The output unit outputs the changed speed. The motor is arranged in the housing.

Description

Continuously variable transmissio

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

2 is an enlarged cross-sectional view taken along the line A-A of FIG.

Figure 3 is a plan view showing a first embodiment of a continuously variable transmission according to the present invention.

Figure 4 a, b is an enlarged view showing a shift control method of the first embodiment.

Figure 5 is a side cross-sectional view showing a second embodiment of a continuously variable transmission according to the present invention.

6 is an enlarged cross-sectional view taken along the line B-B in FIG. 5.

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

8 a and b are enlarged views showing the operating relationship of the friction force control wheel of the second embodiment.

Figure 9 is a side cross-sectional view showing a third embodiment of a continuously variable transmission according to the present invention.

10 is a plan view showing a third embodiment of a continuously variable transmission of the present invention.

[Description of Symbols for Main Parts of Drawing]

10: continuously variable transmission 100: housing

200: shift control unit 210: rotating cylinder

320: speed transmission unit 230: pressurizing unit

240: speed control unit 250, 620: rotation drive unit

260: friction ring 300: input

400: output unit 500: electric motor

600: Torque adjustment ring

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

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. .

Belt type and chain type, which are conventional mechanical continuously variable transmissions that perform this function, are mainly used.

However, the conventional mechanical continuously variable transmission has problems such as a belt type and a chain type.

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 the connection between the chain and the pulley is discontinuous, so that the impact sound occurs when the pulley is contacted, and the centrifugal force increases due to the weight of the chain.

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 purpose is to provide an electric motor in the input shaft to selectively increase the power by operating the motor.

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

The present invention for achieving the above object is provided with a housing having a space therein, a shift control unit for adjusting the speed is installed in the space of the housing, an input unit for inputting external power to the shift control unit, the shift An output unit for outputting the speed is adjusted by the control unit, characterized in that the electric motor is further provided inside the housing.

In addition, the housing is provided, the shift control unit for adjusting the speed is fixed to the input portion supported on one side of the housing, consisting of an output unit for outputting the speed shifted by the shift control unit, provided in the interior of the housing But it is characterized in that the electric motor is coupled to the input unit.

Here, the input unit and the output unit is installed on the coaxial line, characterized in that the input speed is transmitted to be transmitted in one direction.

In addition, the shift control unit is provided with a cylindrical rotating cylinder fixed to the input unit, is provided inside the rotating cylinder is provided with a speed transmission for adjusting the speed, is coupled to the inside of the rotating cylinder, the speed transmission portion It is provided with a pressing portion coupled to be positioned in the front, characterized in that consisting of a speed adjusting portion coupled to the front of the pressing portion, one side is coupled to the speed shifting portion.

In addition, the speed transmission portion is coupled to rotate with the rotating cylinder, and is formed in a ring shape is provided with a pair of outer races formed with a concave groove of an arc on the inner circumferential surface, to have an outer diameter smaller than the inner diameter of the outer race in a ring shape And a concave groove formed on an outer circumferential surface thereof and coupled to an outer diameter portion of the output part, and having a pair of inner races screwed together, and seated in concave grooves of the inner and outer races to adjust the gap between the inner and outer races. By frictional contact with the surface of the concave groove is characterized in that consisting of a plurality of shifting balls to the satellite movement.

In addition, the pressing unit is provided with a support member coupled to the rotating cylinder and the speed control unit, characterized in that the elastic member is further provided between the support member and the speed transmission.

In addition, the support member is coupled to the inner circumferential surface of the rotating cylinder by any one of the screw coupling or interference fit, is formed with an extension tube extending to form a worm wheel on the outer peripheral surface to one side, the front portion of the support member is the speed Torque adjustment ring is screwed to the outer peripheral surface of the control unit is coupled, a worm wheel is formed on the outer circumferential surface of the torque control ring, the worm wheel is characterized in that it is further provided with a rotary drive for operating the support member.

In addition, the rotation driving unit is provided with a worm gear that is engaged with the worm wheel of the support member, the friction force control shaft provided with a pair so that both end portions of the worm gear extend outwardly of the rotating cylinder and correspond to each other, and the rotating cylinder A friction force adjusting wheel which is located on the outside of the friction force control shaft is connected to the frictional force control shaft, and the friction groove is formed in the ring shape is coupled to the friction force control wheel is formed on the inner peripheral portion made of a friction ring installed on the inner peripheral surface of the housing It is done.

Here, both sides of the friction force control shaft is provided with a first gear located in the friction groove of the friction ring of the housing, the friction force control wheel is provided with a second gear, between the first gear and the second gear A third gear is provided, and a fourth gear which is provided between the second gear and the third gear on either side of both sides of the friction force control shaft is connected to each other.

In addition, the rotation driving unit is provided with a worm gear that is engaged with the worm wheel and both sides of the worm gear is provided with a friction force adjusting shaft formed to extend outwardly of the housing, either side of the friction force control shaft is a motor Is installed, the speed control unit is coupled to the output unit is provided with a fixed tube which is seated on the inner race on one side, coupled to the outer diameter of the fixed tube one side is coupled to any one of the inner race of the pair of inner race, The side portion is characterized by consisting of a rotating tube formed with a worm wheel.

Here, the worm wheel of the rotary tube is formed with a worm gear that is engaged with the worm wheel, and both sides of the worm gear is provided with a transmission shaft extending to protrude to the outside of the housing, either one of both sides of the transmission shaft Characterized in that installed.

The input unit may include an input shaft protruding to the outside of the housing, a fixing unit provided inside the housing and integrally formed with the input shaft to be fixed to the rotating cylinder, and the output unit installed on the same line as the input unit. And one side protrudes to the outside of the housing, the other side is provided with an output shaft rotatably coupled to the input portion, and the other side of the output shaft is provided with a power transmission arm extending between the shifting ball, the power transmission arm is shifted Flange provided with a roller in contact with the ball is characterized in that the fixed.

The motor may include a stator fixedly disposed at a predetermined position on an inner circumferential surface of the housing, and the rotor may be provided inside the stator, and the rotor may be fixed to an outer side of the input shaft.

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 side cross-sectional view showing a first embodiment of the continuously variable transmission according to the present invention, FIG. 2 is an enlarged cross-sectional view of the AA line of FIG. 1, and FIG. 3 is a first embodiment of the continuously variable transmission according to the present invention. It is the top view shown.

As shown in FIGS. 1 to 3, the continuously variable transmission device 10 of the present invention is formed in a cylindrical shape in which both sides are open to form a space 102 therein, and covers the cylindrical openings in both sides. It is provided with a housing 100 made of.

In addition, the shift control unit 200 is installed in the inner space 102 of the housing 100 to adjust the speed by receiving power supplied from the outside.

Here, the shift control unit 200 is formed in a cylindrical shape with both sides open, but the locking jaw 212 is formed on the inner peripheral surface, the groove 214 is formed on the inner peripheral surface close to the locking jaw 212, the locking The other inner circumferential surface of the portion where the jaw 212 is formed is provided with a rotating cylinder 210 in which a thread 216 is formed at a predetermined depth.

In addition, the speed transmission unit 220 is provided inside the rotary cylinder 210 to change the speed.

Here, the speed shifting part 220 is formed in a ring shape and a concave groove 222, 222a of an arc is formed on an inner circumferential surface thereof so as to be fixed to the groove 214 so as to rotate together with the rotating cylinder 210. The first and second outer races 221 and 221a are installed and fixed by the same.

At this time, the first outer race 221 is fixed to the locking jaw 212 of the rotary cylinder 210 is fixed so as not to flow, the second outer race (221a) is the groove of the rotary cylinder 210 According to the guide of the fixing bar 218 on the 214 is installed to be able to move back and forth in the longitudinal direction of the rotating cylinder (210).

In addition, the first and second outer races 221 and 221a are formed in a ring shape to have an outer diameter smaller than the inner diameter, and recessed grooves 224 and 224a are formed on the outer circumferential surface so as to be installed close to each other and spaced apart. First and second internal races 223 and 223a screwed together are provided.

That is, the first and second inner races 223 and 223a may correspond to the concave grooves 222 and 222a of the first and second outer races 221 and 221a. Concave grooves 224 and 224a are formed adjacent to the outer side of the 223a to concave when the first and second outer races 221 and 221a and the first and second inner races 223 and 223a are installed. The grooves 222, 222a, 224, and 224a form a ring-shaped donut shape, and when one of the first and second inner races 223 and 223a is rotated, the screw is engaged. The first and second inner races 223 and 223a may perform operations that are close to or spaced apart from each other.

Here, a plurality of protrusions 223b are formed on one side of any one of the first and second inner races 223 and 223a. Preferably, the protrusions 223b are formed on the first inner race 223a. Is preferably formed.

A ring-shaped space portion formed by the recessed grooves 222, 222a, 224, and 224a of the first and second outer races 221 and 221a and the first and second inner races 223 and 223a. There are a plurality of transmission balls 226 of high strength and hardness are inserted.

Here, when the first and second outer races 221 and 221a are rotated by the circumferential surfaces of the shift balls 226 in friction contact with the surfaces of the recessed grooves 222, 222a, 223, and 223a. The shifting ball 226 has a satellite motion along the concave grooves 224 and 224a of the first and second inner races 223 and 223a.

In addition, the pressing portion 230 is coupled to the inner side of the rotating cylinder 210 is fixed to be located in front of the speed transmission portion 220.

Here, the pressing unit 230 is provided on the side of the second outer race 221a is provided with an elastic member 232 to elastically press the second outer race 221a toward the first outer race 221, A screw member 235 is formed on an outer circumferential surface thereof to be screwed to the inner circumferential surface of the rotating cylinder 210 to provide the support member 234 installed to support the elastic member 232.

Further, the elastic member 232 is preferably formed so as to have a strong elasticity by overlapping a plurality of disk-shaped springs (contacting springs) protruding toward one side, any spring having a strong elasticity other than this may be used. Do.

In addition, a speed adjusting unit 240 is installed at the front of the pressing unit 230 and one side thereof is coupled to the speed shifting unit 220.

Here, the speed adjusting unit 240 is provided with a fixing tube 242 to which the first and second internal races 223 and 223a are seated and fixed at one side outer diameter, and surround the outer diameter of the fixing tube 242. The support member 234 is coupled to the outer diameter so as to be fluidly coupled, and the protrusions 244a are alternately formed with the protrusions 223b of the second inner race 223a, and the worm wheel 245 is formed at the outer circumference at the other side. Is provided with a rotating tube 244 is formed.

Further, the worm wheel 245 of the rotary tube 244 is formed with a worm gear 246 to be engaged with the worm wheel 245, both sides of the worm gear 246 to the outside of the housing 100 A transmission shaft 247 is formed to extend so as to protrude. One side of the transmission shaft 247 is provided with a motor 248 for rotating the rotary tube 244.

In addition, the input unit 300 is installed on the longitudinal center line of the housing 100 to input external power to the shift control unit 200 to rotate the rotary cylinder 210.

Here, the input unit 300 is coupled to the cover member 110 of the housing 100, one side is provided with an input shaft 310 connected to a separate drive device (not shown) provided on the outside protruded outward The inner part of the housing 100 is provided with a fixing part 320 that is coupled and fixed by the rotating cylinder 210 and the fixing means.

In addition, an output unit 400 that receives power from the input unit 300 and outputs a speed shifted by the shift control unit 200 is installed on the same line opposite to the input unit 300.

Here, the output unit 400 is coupled to the inside of the fixing tube 242, one side is protruded to the outside of the housing 100 and the other side is composed of an output shaft 410 rotatably coupled to the input unit 300 do.

In addition, at one side of the output shaft 410, that is, a predetermined position in the direction coupled to the input unit 300 is provided with a flange 420 is fixed to be coupled to the speed transmission unit 220.

Here, the flange 420 is the recessed grooves 222 and 222a of the first and second outer races 221 and 221a of the speed shift unit 220 and the first and second inner races 223 and 223a. (224) (224a) is provided with a plurality of power transmission arms 422 extending between the plurality of transmission balls 226 installed, the power transmission arm 422 has a cloud on the side of the transmission ball 226 The contacting roller 424 is provided at the end.

Therefore, when the rotary cylinder 210 and the first and second outer races 221 and 221a are rotated by the power input to the input unit 300, the speed change ball 226 is the first and second inner portions. Satellite movement along the concave grooves 224 and 224a of the races 223 and 223a, and shifting by contact between the shifting balls 226 and the concave grooves 222, 222a, 224 and 224a. The speed is output through the flange 420 and the output shaft 410.

And, the interior of the housing 100 is further provided with an electric motor 500 to selectively operate, the electric motor 500 is provided to be fixed to the input shaft 310 of the input unit 300.

Here, the motor 500 is provided with a stator 502 fixedly disposed on an inner circumferential surface of the housing 100, and the rotor 504 is provided inside the stator 502, and the rotor 504 is provided. ) Is fixedly installed on the outer side of the input shaft 310, a separate battery (not shown) is further provided to drive the rotor 504.

On the other hand, the inner space of the rotating cylinder 210 is filled with oil, the oil is a pair of O-ring passage (243) is formed between the fixed tube 242 and the rotating tube 244, preferably the It is preferable to form the oil passage 243 on the outer side of the fixed tube 242.

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

First, an external driving device (not shown) is connected to the input shaft 310 so that the input shaft 310 is rotated by the driving device.

Accordingly, the rotating cylinder 210 coupled to the input shaft 310 and the first and second outer races 221 and 221a are rotated in the same manner by the rotation of the input shaft 310.

At this time, the insertion coupling between the recessed grooves 222 and 222a of the first and second outer races 221 and 221a and the recessed grooves 224 and 224a of the first and second inner races 223 and 223a. The shifting ball 226 has a satellite motion along the concave grooves 222, 222a, 224, and 224a, and the speed shifted by the satellite motion of the shifting ball 226 is output through the output shaft 410. Is output.

That is, the flange 420 is rotated by the power transmission arm 422 by the satellite movement of the transmission ball 226, and the output shaft 410 is rotated in the same manner by the rotation of the flange 420. Thus, the shifted speed can be output to the outside.

In addition, an external driving device (not shown) connected to the input shaft 310 and the electric motor 500 are operated simultaneously or by selecting any one of the driving device and the electric motor to input power to the shift control unit 200 to speed up. Can be shifted.

Here, when the electric motor 500 and the driving device (not shown) coupled to the input shaft 310 are operated simultaneously, the power for transmitting power is increased, and the speed shifted in the speed transmission unit 220 is relatively increased and output. Will be.

In addition, when power is input only by a driving device connected to the input shaft 310, a battery (not shown) separately provided in the motor 500 may be charged to drive the motor 500.

Therefore, by simultaneously or selectively operating a separate driving device (not shown) connected to the electric motor 500 and the input shaft 310, the output can be increased or an efficient and advantageous input can be provided depending on a situation such as a hybrid vehicle. May be optionally adopted.

Thus, the continuously variable transmission device 10 of the present invention is to operate by this operation.

Here, the shift operation of the continuously variable transmission according to the present invention will be described.

4A and 4B are enlarged views illustrating a shift control method of the first embodiment.

As shown in (a) of FIG. 4, the shift ball 226 is frictionally contacted between the first and second outer races 221 and 221a and the first and second inner races 223 and 223a. When the motor 248 of the speed adjusting unit 240 is operated in the state of exercising, the rotation shaft 247 rotates while the rotary tube 244 is rotated by the worm gear 246 and the worm wheel 245. It rotates in one direction along the outer diameter of the fixing tube 242.

At this time, the protrusion 244a formed on one side of the rotary tube 244 and the protrusion 223b formed on one side of the second inner race 223a are alternately coupled with each other to rotate the second inner race 223a.

When the second inner race 223a is rotated as described above, the second inner race 223a and the first inner race 223 pressurized by screws are brought into close contact with each other, so that the first and second inner races 223 and 223a are in close contact with each other. ) The gap between them becomes narrower.

In addition, as shown in (b) of FIG. 4, when the gap between the first and second outer races 221 and 221a is opened using the pressing unit 230, the shift ball 226 and the first and second outer races are opened. As the contact positions of the inner races 221, 221a, 223, and 223a are changed from P1, P2 to P3, P4, the radius of the orbit of the orbit of the shifting ball 226 which performs satellite motion, that is, revolution and rotation, As the rotation speed is increased and the rotation speed is reduced, the rotation of the speed change ball 226 is drawn out to the output shaft 410 through the power transmission arm 422, so that the speed of the output shaft 410 is shifted in the decreasing direction. . In the shifting operation of increasing speed, the shifting ball 226 may be adjusted in the opposite direction as described above.

On the other hand, the inside of the rotating cylinder 210 is filled with oil to provide a sufficient friction force by coating the contact surface between the transmission ball 226 and the first and second outer, the inner race 221 (221a) (223) (223a). It is possible to ensure the power transmission by exerting, and also through the oil passage (243) of any one of the pair of oil passage (243) formed in the outer portion of the fixed pipe 242 to the oil into the rotating cylinder (210) Injecting and discharging the oil into the other oil passage (243) to replace the oil and at the same time to cool the shifting ball 226 and the first and second, the inner race 221 (221a) (223) (223a). In order to prevent the power loss due to the change in the properties of the oil at the same time, the shifting ball 226 and the first and second, the inner race 221 (221a) (223) (223a) without using a separate cooling device It can be cooled.

Figure 5 is a side cross-sectional view showing a second embodiment of the continuously variable transmission according to the present invention, Figure 6 is an enlarged cross-sectional view taken along line BB of Figure 5, Figure 7 is a second embodiment of the continuously variable transmission according to the present invention It is the top view shown.

5 and 7, the pressing portion 230 coupled to the rotating cylinder 210 installed inside the housing 100 is provided at the side of the second outer race 221a and is provided with a second outer portion. An elastic member 232 for elastically pressing the race 221a in the direction of the first outer race 221 is provided, and a thread 235 is formed on an outer circumferential surface thereof so as to be screwed to the inner circumferential surface of the rotary cylinder 210 to the elasticity. A support member 234 provided to support the member 232 is provided and includes a rotation driving part 250 for rotating the support member 234.

Further, the elastic member 232 is preferably formed so as to have a strong elasticity by overlapping a plurality of disk-shaped springs (contacting springs) protruding toward one side, any spring having a strong elasticity other than this may be used. Do.

In addition, the rotation driving unit 250 is provided with an extension tube 236 extending one side of the support member 234, the worm wheel 251 is provided on the outer peripheral surface of the extension tube 236, the worm wheel 251 A worm gear 252 meshes with the worm gear 252, and a pair of friction force adjusting shafts 254 are provided on both side ends of the worm gear 252 so as to protrude to the outside of the rotating cylinder 210.

Here, both sides of the friction force control shaft 254 is provided with a first gear 264 located in the friction groove 262 of the housing, the friction control wheel 258 is provided with a second gear 265. A third gear 266 is provided between the first gear 264 and the second gear 265, but the second gear 265 is provided at any one side of both sides of the friction force control shaft 244. ) And the fourth gear 267 is provided between the third gear (266).

Further, the rotary drive unit 250 is provided with a pair of meshing to the worm wheel 251 to correspond to each other, the pair of rotary drive unit 250 is the fourth gear 267 as shown in Figure 6 is the friction force control Is installed only on one side of the shaft 254, the marral force adjustment shaft 254 can be smoothly rotated.

Accordingly, when the friction ring 260 is moved forward or backward, the friction force adjusting wheel 258 rotates while rubbing against the friction ring 260, and when the friction force adjusting wheel 258 rotates, the friction force adjusting wheel The second gear 265 integrally formed at 258 rotates, and the rotational force of the friction force adjusting wheel 258 is controlled by the third gear 266 engaged with the second gear 265. The frictional force rotating shaft 254 is rotated by rotating 264 to move the support member 234 forward or backward to adjust torque by using the elastic force of the elastic member 232.

In addition, the friction force control wheel 258 is located on the outer side of the rotating cylinder 210 is connected to the friction force control shaft 254 is coupled.

In addition, the friction groove 262 is formed in the ring shape is coupled to the friction force control wheel 258 is formed on the inner peripheral surface is provided with a friction ring 260 is installed on the inner peripheral surface of the housing 100.

Here, the friction ring 260 is installed on the inner circumferential surface of the housing 100 only to flow and not rotate, but a variety of control means for moving the friction ring 260 forward and backward can be used. It is preferable to have an arm (not shown) extending to the outside of the housing 100 on one side so as to be able to operate by using a manual or a motor to move forward and backward from the outside of the housing 100.

The operation relationship, that is, the shift control method 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, if the operation relationship of the friction force control wheel of the second embodiment of the present invention will be described.

As shown in FIG. 8, in the state in which the friction force control wheel 258 is rotated as in the rotating cylinder 210, the friction ring 260 is moved back and forth, so that both side wall surfaces of the friction groove 262 ( The friction force adjusting wheel 258 is rubbed on the 264 so that the friction force adjusting wheel 258 rotates forward or reverse.

Accordingly, when the friction ring 260 rotates forward and backward to rotate the friction force adjusting wheel 258, the worm wheel engaged with the worm gear 252 of the friction force adjusting shaft 254 connected to the friction force adjusting wheel 258 The support member 234 is rotated by the 251 and the support member 234 is moved forward and backward as the screw portions 216 and 235 screwed to the rotary cylinder 210 are loosened and tightened.

In this case, as the support member 234 moves forward and backward, the elastic member 232 supported by the support member 234 may adjust the pressing force for pressing the second outer race 221a.

That is, when the support member 234 moves forward to press the elastic member 232, the elastic member 232 presses the second outer race 221a toward the first outer race 221.

Then, the shifting balls 226 inserted into the concave grooves 222 and 222a of the first and second outer races 221 and 221a are pushed toward the first and second inner races 223 and 223a. As the friction force is greatly generated, the concave grooves 222, 222 a, 224, 224 a and the shifting ball 226 of the first and second outer races 221, 221 a, 223, and 223 a are further increased. Strongly in close contact with the transmission ball 226 and the first and second, the inner race 221, 221a (223a) 223 (223a) is increased torque.

 On the contrary, when the support member 234 is reversed, the pressing force of the elastic member 232 is reduced such that the first and second external races 221, 221 a, 223, and 223 a and the shifting ball 226 are provided. The frictional force between and decreases so that the torque transmitted through them decreases.

At this time, when the support member 234 is further retracted, the shifting balls 226 and the first and second external races 221, 221a, 223, and 223a are spaced apart so that the friction force therebetween is " It becomes 0 "and the transmission force of torque is interrupted | blocked and clutch operation is performed.

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

9 is a side sectional view showing a third embodiment of a continuously variable transmission according to the present invention, and FIG. 10 is a plan view showing a third embodiment of the continuously variable transmission of the present invention.

9 and 10, a support member 234 installed in the inner space 102 of the housing 100 to support the elastic member 232 for pressing the second outer race 221a. To the rotary cylinder 210, the screw thread 244a is formed on the outer circumferential surface of the rotary tube 244 is screwed to the outer circumferential surface of the rotary tube 244, but the worm wheel 610 is formed on the outer circumferential surface Ring 600 is provided.

Then, the rotation driving unit 620 is engaged with the worm wheel 610 of the torque control ring 600 is installed, the rotation driving unit 620 is provided with a worm gear 622 is engaged with the worm wheel 610. The rotating shaft 624 is provided to protrude to the outside of the housing 100, the motor 626 is provided on one side of the rotating shaft 624 protruding to the outside of the housing 100.

The operation relationship for the continuously variable transmission of the present invention configured as described above, that is, the speed ratio adjusting method is made by the same method as in the former, and will be omitted herein.

However, when the motor 626 of the rotary drive unit 620 is driven, the rotating shaft 624 is rotated and torqued by the worm wheel 610 engaged with the worm gear 622 of the rotating shaft 624. The adjustment ring 600 displaces the support member 234 while being axially displaced along the screwed rotary tube 244.

That is, the support member 234 pushes the support member 234 as the torque control ring 600 advances, and the support member 234 is in close contact with the inner circumferential surface of the rotating cylinder 210. The slide will be moved.

In this case, the support member 234 adjusts the pressing force of the elastic member 232 according to the displacement, that is, when the support member 234 pushes the elastic member 232, the second external race 221a is firstly applied. The pressure is applied toward the outer race 221.

Accordingly, the shifting balls 226 inserted into the recessed grooves 222 and 222a of the first and second outer races 221 and 221a are pushed toward the first and second inner races 223 and 223a. The grooves 222, 222 a, 224, 224 a and the transmission ball 226 are more closely adhered to each other, thereby increasing friction.

On the contrary, when the motor 626 is driven to operate the rotation driving unit 620 in reverse, the torque adjusting ring 600 is retracted along the threaded portion 244a of the rotary tube 244, and the torque adjusting ring 600 is rotated. The support member 234 pressurizing the elastic member 232 along the retraction of the slide slides along the inner circumferential surface of the rotating cylinder 210 to retreat.

Therefore, the pressing force for pressing the second outer race 221a by the elastic member 232 according to the retraction of the support member 234 is reduced, so that the first, second and inner races 221, 221a and 223 are reduced. ) 223a and the friction force between the transmission 226 is reduced to reduce the torque transmitted through them.

At this time, if the support member 234 is further retracted, the friction balls between the shifting balls 226 and the first and second external races 221, 221a, 223, and 223a are spaced apart from each other. ", The transmission of torque is interrupted, and the clutch operation is performed.

 In addition, the shift operation of the continuously variable transmission device 10 is performed by the same operation described above, and will be omitted herein.

However, as the elastic member 232 pressurizing the first outer race 221, the interval between the first and second inner races 223 and 223a becomes narrower or wider when the rotary tube 244 is rotated.

That is, when the rotary tube 244 is rotated to one side, the interval between the first inner race 223 and the second inner race 223a which is engaged by the screw portion is narrowed and at the same time, the torque that is screwed to the rotary tube 244 The adjusting ring 600 is retracted in the opposite direction so that the gap between the first and second outer races 221 and 221a is opened.

At this time, even when the second outer race 221a is retracted from the shifting ball 226 and the elastic member 232 is pushed back, the torque adjusting ring 600 engaged with the screw is retracted and thus the support member 234 is also retracted together. Therefore, the elastic force of the elastic member 232 can be kept constant even when the second outer race 221a is retracted, so that the torque can be kept constant during the shift operation.

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.

Torque adjustment of the present invention configured as described above has the effect of precisely adjusting the rotational force (shifting speed) by making the friction force with the race in which the shifting ball is frictionally contacted through the worm wheel and the worm gear. .

In addition, there is an effect that can precisely control the rotation and process speed of the shifting ball in the satellite movement by precisely adjusting the interval between the race using the worm wheel and worm gear during the shift.

And, even during speed adjustment, the elastic member maintains a constant elastic force to maintain a constant torque, and by having a clutch function, it does not require a separate clutch to reduce the volume and weight, and various forms It can be used for various purposes by easily connecting to the input and output of the.

In addition, the stepless speed changer further includes a torque control unit capable of adjusting torque, which is applicable to large-capacity speed control and at the same time has an effect of obtaining a precisely shifted speed.

In addition, by simultaneously or selectively operating a separate driving device connected to the electric motor and the input shaft, the output can be increased or an efficient and advantageous input can be selectively adopted according to a situation such as a hybrid vehicle.

Claims (13)

A housing having a space formed therein, Is installed in the space portion of the housing to adjust the speed, a cylindrical rotating cylinder is provided, is provided on the inside of the rotating cylinder is provided with a speed transmission for adjusting the speed, is coupled to the inside of the rotating cylinder, the speed shift It is provided with a pressing portion coupled to be positioned in front of the portion, the speed adjusting portion consisting of a speed adjusting portion coupled to the front of the pressing portion, one side is coupled to the speed transmission portion, An input unit for inputting external power to the shift control unit; An output unit configured to output a speed controlled by the shift control unit; Stepless speed change apparatus characterized in that the inside of the housing further comprises an electric motor. Housing is provided, The speed is adjusted to the input portion supported on one side of the housing, provided with a cylindrical rotating cylinder fixedly coupled to the input portion, is provided inside the rotating cylinder is provided with a speed transmission for adjusting the speed, of the rotating cylinder Is coupled to the inner side is provided with a pressing portion is coupled to be positioned in front of the speed transmission, the speed adjusting portion consisting of a speed adjusting portion is coupled to the front of the pressing portion, one side is coupled to the speed transmission portion, It is composed of an output unit for outputting the speed shifted by the shift control unit, Stepless speed change apparatus, characterized in that provided in the housing, the electric motor coupled to the input unit is mounted. The method according to claim 1 or 2, And the input unit and the output unit are installed on the coaxial line, and the input speed is transmitted so that the speed is transmitted in one direction. delete The method according to claim 1 or 2, The speed transmission part is coupled to rotate together with the rotating cylinder, and is formed in a ring shape and is provided with a pair of outer races having concave grooves formed on an inner circumferential surface thereof. It is formed in a ring shape so as to have an outer diameter smaller than the inner diameter of the outer race, a concave groove is formed on the outer peripheral surface is coupled to the outer diameter portion of the output portion is provided with a pair of inner race screwed together; Stepless speed change device characterized in that it is seated in the recess groove of the inner, outer race made of a plurality of shifting balls in friction contact with the surface of the recess groove by the gap control of the inner, outer race to perform a satellite movement. The method according to claim 1 or 2, The pressurization portion is provided with a support member coupled to the rotating cylinder and the speed control portion, the continuously variable transmission device characterized in that the elastic member is further provided between the support member and the speed transmission portion. The method of claim 6, The support member is coupled to the inner circumferential surface of the rotating cylinder by any one of the screw coupling or interference fit, is formed with an extension tube extending to form a worm wheel on the outer peripheral surface to one side, the front portion of the support member Torque control screw coupled to the outer peripheral surface is coupled, the outer circumferential surface of the torque control ring is formed with a worm wheel, the worm wheel is continuously variable gear characterized in that it is further provided with a rotary drive for operating the support member. The method of claim 7, wherein The rotary drive unit is provided with a worm gear that is engaged with the worm wheel of the support member, and a friction force control shaft provided with a pair so that both ends of the worm gear extends to the outside of the rotating cylinder to correspond to each other; A friction force control wheel which is located outside the rotating cylinder and connected to the friction force control shaft; And a friction groove formed in a ring shape and having a friction groove to which the friction force control wheel is coupled is formed on an inner circumference thereof and formed of a friction ring installed on an inner circumferential surface of the housing. The method of claim 8, Both sides of the friction force control shaft protrude outward of the housing, the first gear is located in the friction groove of the friction ring, the friction force control wheel is provided with a second gear, the first gear and the second A third gear is provided between the gears, and a fourth gear provided between the second gear and the third gear on one side of both sides of the friction force adjusting shaft is connected to each other, and the motor is further provided on the other side. Continuously variable speed transmission, characterized in that. The method of claim 8, The speed control unit is coupled to the output unit is provided with a fixed tube on one side, coupled to the outer diameter of the fixed tube is characterized in that the continuously variable gear consisting of a rotating tube formed with a worm wheel. The method of claim 10, The worm wheel of the rotary tube is formed with a worm gear that is engaged with the worm wheel, and both sides of the worm gear is provided with a transmission shaft extending to protrude to the outside of the housing, either side of the transmission shaft is provided with a motor Stepless speed transmission, characterized in that. The method according to claim 1 or 2, The input unit and the input shaft protruding outward of the housing, A fixing part provided inside the housing and integrally formed with the input shaft and fixedly coupled to the rotary cylinder; The output unit is installed on the same line as the input unit and one side protrudes out of the housing, the other side and the output shaft rotatably coupled to the input unit, The other side of the output shaft is provided with a power transmission arm, the power transmission arm is characterized in that the flange is provided with a roller coupled to the continuously variable transmission. The method according to claim 1 or 2, The motor includes a stator fixedly disposed at a predetermined position on an inner circumferential surface of the housing, and a rotor is provided inside the stator, and the rotor is fixed to an outer side of the input shaft.

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