WO2013111943A1 - 무단변속기가 구비된 전기 차량의 동력전달장치 - Google Patents
무단변속기가 구비된 전기 차량의 동력전달장치 Download PDFInfo
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- WO2013111943A1 WO2013111943A1 PCT/KR2012/010005 KR2012010005W WO2013111943A1 WO 2013111943 A1 WO2013111943 A1 WO 2013111943A1 KR 2012010005 W KR2012010005 W KR 2012010005W WO 2013111943 A1 WO2013111943 A1 WO 2013111943A1
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- pulley assembly
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- wheels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H9/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members
- F16H9/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion
- F16H9/04—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes
- F16H9/12—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members
- F16H9/16—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members using two pulleys, both built-up out of adjustable conical parts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/32—Friction members
- F16H55/52—Pulleys or friction discs of adjustable construction
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
- B60K6/54—Transmission for changing ratio
- B60K6/543—Transmission for changing ratio the transmission being a continuously variable transmission
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M7/00—Motorcycles characterised by position of motor or engine
- B62M7/12—Motorcycles characterised by position of motor or engine with the engine beside or within the driven wheel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/32—Friction members
- F16H55/36—Pulleys
- F16H55/49—Features essential to V-belts pulleys
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/32—Friction members
- F16H55/52—Pulleys or friction discs of adjustable construction
- F16H55/56—Pulleys or friction discs of adjustable construction of which the bearing parts are relatively axially adjustable
- F16H55/563—Pulleys or friction discs of adjustable construction of which the bearing parts are relatively axially adjustable actuated by centrifugal masses
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
- F16H61/0293—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being purely mechanical
- F16H61/0295—Automatic gear shift control, e.g. initiating shift by centrifugal forces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/66—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/04—Final output mechanisms therefor; Actuating means for the final output mechanisms a single final output mechanism being moved by a single final actuating mechanism
- F16H63/06—Final output mechanisms therefor; Actuating means for the final output mechanisms a single final output mechanism being moved by a single final actuating mechanism the final output mechanism having an indefinite number of positions
- F16H63/067—Final output mechanisms therefor; Actuating means for the final output mechanisms a single final output mechanism being moved by a single final actuating mechanism the final output mechanism having an indefinite number of positions mechanical actuating means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/10—Road Vehicles
- B60Y2200/12—Motorcycles, Trikes; Quads; Scooters
- B60Y2200/126—Scooters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K2204/00—Adaptations for driving cycles by electric motor
Definitions
- the present invention relates to a power transmission device for a two-wheel or four-wheel drive electric vehicle, and more particularly, to improve the performance and energy efficiency of the electric vehicle by allowing the rotation ratio transmitted from the drive shaft of the electric motor to the driven shaft on the wheel side.
- the present invention relates to a power transmission device for an electric vehicle provided with a continuously variable transmission.
- a two- or four-wheel drive electric vehicle uses an electric motor as a power source, and a power transmission device composed of a reduction gear train is disposed between the drive shaft and the wheel shaft of the electric motor. Accordingly, the high speed rotation of the electric motor is decelerated and transmitted to the wheels to drive the vehicle.
- the transmission since the increase and decrease of the traveling speed is made by controlling the electric power supplied to the electric motor and adjusting the rotation speed of the electric motor, the transmission is not provided separately in the power transmission device of the electric vehicle which uses the electric motor as a power source.
- the conventional electric vehicle is not provided with a separate transmission, it is not possible to shift the vehicle efficiently according to the speed or load when the vehicle is running, and as a result, the output and energy efficiency are lower than those of a gasoline engine driven vehicle having a transmission. have.
- V-belt continuously variable transmission used in the gasoline engine driving vehicle to the power transmission device of the electric vehicle.
- V belt continuously variable transmission is installed between the drive shaft 1 on the engine side and the driven shaft 2 on the wheel side. Therefore, the drive shaft 1 is rotated by the driving of the engine 3, the driven shaft 2 is rotated by receiving the rotational force shifted from the drive shaft 1 through the continuously variable transmission (4), of the driven shaft (2) The rotational force is decelerated by the reduction gear train 6 installed between the driven shaft 2 and the wheel shaft 5 and transmitted to the wheel shaft 5.
- the configuration of the V-belt type continuously variable transmission 4 includes a drive pulley assembly 7 provided on the drive shaft 1, a driven pulley assembly 8 provided on the driven shaft 2, and the drive pulley assembly 7 and the driven unit. It consists of a V-belt (9) connecting the pulley assembly (8) and a clutch assembly (8a) provided on the driven pulley assembly (8).
- the driven pulley assembly 8 is provided with a pressure spring 8c, which pressurizes one driven pulley to narrow the interval between the driven pulleys 8 and the V-belt. Adhesion is generated between the parts (9), so that the rotational force can be transmitted.
- the driven pulley assembly 8 connected by the V belt 9 is rotated.
- the clutch assembly 8a is spaced apart from the clutch cap 8b fixed to the driven shaft 2 when the rotation speed of the engine 3 is equal to or less than the idling speed (2000 to 2500 RPM depending on the type of vehicle).
- the V-belt 9 In the initial state of the vehicle, the V-belt 9 is located at the outermost outer diameter of the driven pulley assembly 8 due to the pressing force of the pressure spring 8c installed in the driven pulley assembly 8 in the initial state. (7) is in close contact with the innermost diameter, and the initial rotation ratio of the drive shaft (1) and the driven shaft (2) is approximately due to the difference in the diameter holding the V belt in the drive pulley assembly (7) and the driven pulley assembly (8). It remains around 2.5: 1.
- the drive pulley assembly 7 In this state, in order to change the rotation ratio of both shafts, the drive pulley assembly 7 is composed of a variable drive pulley 7a on one side and a plurality of wait controllers 7b are installed, so that the engine rotation speed is changed to the speed at which the engine is started.
- the wait controller 7b presses the variable drive pulley 7a toward the fixed drive pulley 7c by centrifugal force, which causes the variable drive pulley 7a and the fixed drive pulley 7c.
- the V-belt 9 is pushed outward with a large diameter so that the shift is automatically made by changing the rotation ratio with the driven pulley assembly 8 side.
- the centrifugal force of the weight controller 7b of the drive pulley assembly 7 is greater than the pressing force of the pressure spring 8c of the driven pulley assembly 8 (4000-5000 RPM) depending on the type of vehicle.
- the gasoline engine requires a clutch assembly 8a in order to prevent power from being transmitted in an idling state. Since the vehicle adjusts the speed by controlling the power supplied to the electric motor, there is a problem in that only the energy is wasted unnecessarily in the idling state.
- the present invention is to solve the conventional problems as described above, the object is to apply the V-belt continuously variable transmission to the electric vehicle that uses the electric motor as a drive source to automatically shift according to the driving state appropriately to drive the electric motor as a drive source
- the present invention also provides a power transmission device for an electric vehicle equipped with a continuously variable transmission that can improve energy efficiency and performance.
- another object of the present invention is to reduce the number of revolutions of the electric motor required for the automatic transmission of the continuously variable transmission to speed up the shift time, as well as to further save energy, for rapid acceleration or uphill while driving
- a power transmission device for an electric vehicle with a continuously variable transmission that can prevent the slip phenomenon occurring between the V-belt and the pulley of the continuously variable transmission when the speed of the electric motor is suddenly increased.
- the present invention for achieving the above object is a housing, a drive pulley assembly provided on the drive shaft of the electric motor rotationally supported in the housing, a driven pulley assembly installed on the driven shaft rotationally supported in the housing, the drive pulley assembly And a V-belt connecting the driven pulley assembly and a gear shaft rotated between the wheel shaft and the driven shaft rotated in the housing, wherein the drive pulley assembly includes a pair of first and second driving faces.
- a plurality of wait controllers installed on the wheel and the one first driving wheel to adjust a distance between the first and second driving wheels by centrifugal force acting upon rotation of the driving shaft, and on the other second driving wheel.
- the driven pulley assembly is a pair of An electric continuously-equipped transmission comprising first and second driven wheels and an elastic pressurizing mechanism provided to apply an elastic force to one of the second driven wheels so that the V-belt is brought into close contact between the first and second driven wheels. It is characterized by the power train of the vehicle.
- the present invention is the power transmission of the electric vehicle is provided with an elastic pressure mechanism of the drive pulley assembly, a support plate fixed to the end of the drive shaft, and a continuously variable transmission made of an elastic spring elastically installed between the support plate and one of the second drive wheel.
- the device is characterized.
- the present invention is the power of the electric vehicle is provided with an elastic pressure mechanism of the driven pulley assembly, a fixed plate fixed to the end of the driven shaft, and an endless transmission made of an elastic spring provided between the fixed plate and one of the second driven wheels. It is characterized by the delivery device.
- the present invention is characterized in that the drive train assembly and the driven pulley assembly is characterized in that the power transmission device of the electric vehicle is provided with a continuously variable transmission is provided with a slip prevention mechanism to prevent slipping with the V-belt.
- the present invention comprises a rectangular inclined cam groove formed in the boss portion of one of the second drive wheels, the slip prevention mechanism provided in the drive pulley assembly, and a cam pin fixed to the drive shaft and guided to the inclined cam groove;
- the inclined cam groove is characterized in that the power transmission device of an electric vehicle having a continuously variable transmission is inclined so that the cam pin is pushed to move the second drive wheel toward the first drive wheel when the rotation speed of the drive shaft is faster than the second drive wheel.
- the present invention is the slip preventing mechanism provided in the driven pulley assembly is formed in the oblique cam groove formed in the boss portion of one second driven wheel and the boss portion of the other first driven wheel And a cam pin guided to the inclined cam groove, wherein the inclined cam groove pushes the second driven wheel toward the first driven wheel when the rotation speed of the second driven wheel is faster than the first driven wheel. It is characterized by a power transmission device of an electric vehicle provided with an inclined continuously variable transmission.
- the present invention is characterized by a power transmission device for an electric vehicle provided with a continuously variable transmission having a plurality of grooves formed on an outer circumferential surface of the wait controller.
- V-belt continuously variable transmission is installed in the power transmission device of the electric vehicle using the electric motor as a drive source, it is possible to automatically shift in accordance with the driving state of the electric vehicle, thereby Also in a vehicle, the output and performance of a vehicle can be improved and energy efficiency can also be improved.
- the motor for pressing and shifting the first drive wheel toward the second drive wheel by the centrifugal force of the wait roller can be lowered by the elastic force of the elastic pressurizing mechanism that presses the second drive wheel, thereby speeding up the shift point of the continuously variable transmission to further improve performance and further reduce energy.
- the slip pull mechanism is provided in the drive pulley assembly and the driven pulley assembly, so that the driving pulley assembly and the driven pulley assembly may suddenly increase the rotational speed of the electric motor while driving or driving uphill. Slip with the generated V belt can be prevented.
- the friction surface of the wait controller can be reduced to reduce the frictional force, thereby improving the shifting performance, Since the lubricant flows into the grooves of the dog, the loss of the lubricant is reduced and the lubricant can be maintained for the longest time to improve the lubrication performance.
- FIG. 1 is a cross-sectional view showing a power transmission device of a typical gasoline engine vehicle.
- FIG. 2 is a cross-sectional view showing a power transmission device of an electric vehicle according to the present invention.
- Figure 3 is an exploded perspective view showing a power transmission device of an electric vehicle according to the present invention.
- Figure 4 is an enlarged view showing the configuration of the drive pulley assembly in Figure 2;
- 5 and 6 is an operating state diagram showing a slip preventing mechanism of the drive pulley assembly in the power transmission device of the electric vehicle of the present invention.
- Figure 7 is a perspective view of the wait controller in the power train of the electric vehicle according to the present invention.
- Figure 8 is an enlarged view showing the configuration of the driven pulley assembly in Figure 2;
- 9 and 10 are operating state diagram showing the slip preventing mechanism of the driven pulley assembly in the power transmission device of the electric vehicle of the present invention.
- FIGS. 2 and 3 are cross-sectional and exploded perspective view showing a preferred embodiment of the present invention, as shown in the power transmission device of the electric vehicle of the present invention, the rotational force of the electric motor 11 is transmitted to the wheel 12. It is for the purpose of providing the housing 13 fixed to a vehicle.
- An electric motor 11 is installed outside one side of the housing 13 so that the drive shaft 14 is rotatably supported inside the housing 13, and the wheel shaft 15 of the wheel 12 penetrates into the inside of the housing 13. And the driven shaft 16 is positioned between the drive shaft 14 and the wheel shaft 15 to be rotatably supported in the housing 13.
- a V-belt type continuously variable transmission 20 is installed between the drive shaft 14 and the driven shaft 16, and a reduction gear train 17 composed of a plurality of gears between the driven shaft 16 and the wheel shaft 15. Is installed. Accordingly, the rotation ratio between the drive shaft 14 and the driven shaft 16 is changed by the continuously variable transmission 20, and the rotation of the driven shaft 16 is reduced by the reduction gear train 17 to the wheel shaft 15. It is a configuration.
- the V-belt continuously variable transmission 20 adopts a V-belt continuously variable transmission commonly used in two-wheeled gasoline engine vehicles.
- the V-belt continuously variable transmission 20 includes a drive pulley assembly 30 installed on the drive shaft 14 of the electric motor 11, and It consists of a driven pulley assembly 40 installed on the coaxial 16, and a V belt 50 for connecting the drive pulley assembly 30 and the driven pulley assembly 40.
- the driving pulley assembly 30 includes a pair of opposing first and second driving wheels 31 and 32, and the first and second driving wheels 31 and 32.
- the V-belt 50 is sandwiched between the two to be able to transmit the rotational force.
- a plurality of wait controllers 33 are installed on the first drive wheels 31 positioned on the electric motor 11 side, and the wait controllers 33 have a cover ( Covered with 34).
- the plurality of wait controllers 33 press the first drive wheels 31 toward the second drive wheels 32 by the centrifugal force acting upon the rotation of the drive shafts 14, so that the first and second drive wheels 31 and 32 are rotated. Function to adjust the interval between.
- the locking position of the V-belt 50 in close contact between the first and second driving wheels 31 and 32 is moved in the radial direction of the first and second wheels 31 and 32,
- the rotation ratio with the driven pulley assembly 40 is changed to make a shift.
- the start speed of the shift of the electric motor 11, the centrifugal force acts on the wait controller 33 to start the shift may be set slightly differently depending on the vehicle. However, it is preferable to set it at about 1700 RPM or more.
- the wait controller 33 having such a function forms a plurality of recesses 33a on the outer circumferential surface.
- the groove 33a reduces the friction area by contacting the first drive wheel 31 or the cover 34 when the wait controller 33 rotates, thereby reducing the frictional force, thereby improving the shifting performance, and also the groove 33a.
- Lubricant greyase
- is introduced into it can maintain the lubrication performance for a long time.
- the drive pulley assembly 30 includes an elastic pressure mechanism 35 and a slip prevention mechanism 36.
- the elastic pressing mechanism 35 is for applying an elastic force so that the V belt 50 is in close contact between the first and second driving wheels 31 and 32, and a support plate 35a fixed to the end of the driving shaft 14, and It consists of an elastic spring 35a elastically installed between the support plate 35a and the second drive wheel 32. At this time, it is preferable to install a spring bearing 35c between the elastic spring 35a and the second driving wheel 32.
- the slip prevention mechanism 36 is to prevent slippage between the first and second drive wheels 31 and 32 and the V belt 50 of the drive pulley assembly 30, and the second drive wheel ( It consists of a rectangular inclined cam groove 36a formed in the boss portion 32a of 32, and cam pins 36b and 44b fixed to the drive shaft 14 and guided to the inclined cam groove 36a.
- the cam pin 36b may be formed directly on the drive shaft 14, but is preferably fixed to the rotating support cylinder 14a which is fixed to the outer circumference of the drive shaft 14 and rotates together as in this embodiment.
- the driven pulley assembly 40 includes a pair of first and second driven wheels 41 and 42 that face each other, as shown in FIG. 8, and the first and second driven wheels 41.
- the V-belt 50 is sandwiched between 42 and 42 so that the rotation force can be transmitted.
- the driven pulley assembly 40 includes an elastic pressing mechanism 43 and a slip preventing mechanism 44.
- the elastic pressing mechanism 43 is for applying an elastic force so that the V-belt 50 is in close contact between the first and second driven wheels 41 and 42, and the fixing plate 45 fixed to the end of the driven shaft 16 and
- the elastic spring 43a is elastically installed between the fixing plate 45 and the second driven wheel 42.
- the fixing plate 45 may be composed of a single part, but for ease of manufacturing, one end of the first fixing member 45a and the elastic spring 43a fixed to the driven shaft 16 as in this embodiment.
- the second fixing member 45b in close contact with the first fixing member 45a and the second fixing member 45b are preferably configured to be interposed between the second fixing member 45b.
- the slip prevention mechanism 44 is for preventing slip from occurring between the driven pulley assembly 40 and the V belt 50, and is formed in the rectangle 42 formed on the boss portion 42a of the second driven wheel 42. And a cam pin 44b fixed to the boss portion 41a of the first driven wheel 41 and guided to the inclined cam groove 44a.
- the cam pin 44b makes the second driven wheel 42 the first type. It is formed to be inclined to prevent the slip by moving toward the same wheel 41, that is, as shown in Figs. 9 and 10 the rotational speed of the second driven wheel 42 is the first driven wheel 41.
- the cam pin 44b of the first driven wheel 41 is relatively stopped, and the inclined cam groove 44a of the second driven wheel 42 is rotated by the rotational speed difference ( Since it is further rotated in the direction of the arrow Y in FIG.
- the inclined cam groove 44a is guided to the cam pin 44b by using the rotation of the inclined cam groove 44a so that the second driven wheel 42 may be moved to the first. It is formed to be inclined to move toward the driven wheel 41 (arrow X direction). Therefore, since the distance between the first and second driven wheels 41 and 42 is further narrowed by the movement of the second driven wheel 42, the V-belt 50 can be brought into close contact with each other to prevent slippage.
- the driving pulley assembly 30 is connected to the driving pulley assembly 30.
- the shifting is not performed because the centrifugal force of the provided wait controller 33 is not applied, but in the driving pulley assembly 30, the first and second driving wheels 31, by the elastic spring 35a of the elastic pressure mechanism 35, are used.
- the first and second driven wheels 41 and 42 are connected to the V-belt by the elastic springs 43a of the elastic pressing mechanism 43. 50, the rotation of the drive shaft 14 is transmitted to the driven shaft 16 through the drive pulley assembly 30, the driven pulley assembly 40 and the V belt 50, the driven shaft 16 The rotation of the wheel is reduced by the reduction gear train 17 and transmitted to the wheel shaft 15 so that the wheel 12 rotates, and the vehicle travels at low speed. At this time, the position of the V belt 50 is in close contact with the innermost diameter in the first and second drive wheels 31 and 32 of the drive pulley assembly 30, and the first and second driven follower of the driven pulley assembly 40. In the pulleys 41 and 42, the pressing force of each of the elastic springs 35b and 43a is set in advance so as to be in close contact with the outermost diameter. It is desirable to maintain the initial rotation ratio of h) approximately 2.5: 1.
- the centrifugal force acts on the wait controller 33 of the driving pulley assembly 30 to drive the first drive.
- the wheel 31 is urged toward the second drive wheel 32, and as a result, the gap between the first drive wheel 31 and the second drive wheel 32 is narrowed and the V belt 50 is moved outward from the center of rotation. Since it is pushed toward the side, the locking diameter of the V-belt 50 becomes large, whereby the rotation ratio with the driven pulley assembly 40 is changed to make a shift.
- This rotation ratio is automatically adjusted by changing the centrifugal force of the wait controller 33 in accordance with the increase and decrease of the rotation speed of the electric motor 11, thereby changing the interval between the first drive wheel 31 and the second drive wheel 32. Is done.
- the elastic spring 35a of the elastic pressure mechanism 35 provided in the drive pulley assembly 30 presses the second drive wheel 32 toward the first drive wheel 31, the elastic spring ( As long as the elastic force of 35a) acts, the time point at which the wait controller 33 exerts the centrifugal force for the start of the shift can be lowered. As the automatic transmission is started, the shift timing of the continuously variable transmission 20 can be advanced by that much, so that the output and performance can be further improved, and the energy can be further reduced.
- the slip prevention mechanisms 36 and 44 provided in the drive pulley assembly 30 and the driven pulley assembly 40 allow a sudden increase in the number of rotations of the electric motor 11 when suddenly accelerating during driving or on an uphill road. In this case, between the first and second drive wheels 31 and 32 of the drive pulley assembly 30 and the V belt 50 or the first and second driven wheels 41 and 42 of the driven pulley assembly 40. And the slip phenomenon that may occur between the V-belt 50 can be prevented.
- the driven pulley assembly 40 As shown in FIGS. 9 and 10, when the rotational speed of the electric motor 11 is suddenly increased during traveling or uphill, the first and second driven wheels 41 While the slip occurs between the 42 and the V-belt 50, the cam pin 44b of the first driven wheel 41, which is relatively fixed to the driven shaft 16, is in a stopped state, and the driving pulley assembly 30 At the) side, the inclined cam groove 44a of the second driven wheel 42 subjected to the rotational force through the V belt 50 is further rotated in the arrow Y direction. Accordingly, since the cam pin 44b is guided to the inclined cam groove 44a, the second driven wheel 42 is pushed and moved in the direction of the arrow X. Thus, the gap between the first and second driven wheels 41 and 42 is increased. As it narrows, the V-belt 50 is further brought into close contact, whereby slip is prevented so that the rotational force of the drive shaft 14 can be transmitted to the driven shaft 16.
- gear reducer 20 continuously variable transmission
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Abstract
Description
Claims (7)
- 하우징과, 상기 하우징 내에 회전지지된 전동모터의 구동축에 설치된 구동풀리조립체와, 상기 하우징 내에 회전지지된 종동축에 설치된 종동풀리조립체와, 상기 구동풀리조립체와 종동풀리조립체를 연결하는 V벨트와, 상기 하우징 내에 회전지지된 바퀴축과 상기 종동축 사이에 설치된 감속기어열을 구비하며,상기 구동풀리조립체는, 마주하는 한 쌍의 제1 및 제2 구동휘일과, 상기 한쪽의 제1 구동휘일에 설치되어 구동축의 회전시 작용하는 원심력으로 제1 및 제2 구동휘일 사이의 간격을 조절하도록 된 복수개의 웨이트롤러와, 상기 다른 한쪽의 제2 구동휘일에 탄성력을 가하도록 설치되어 V벨트가 제1 및 제2 구동휘일 사이에서 밀착되도록 하는 탄성가압기구로 이루어지고,상기 종동풀리조립체는, 한 쌍의 제1 및 제2 종동휘일과, 상기 한쪽의 제2 종동휘일에 탄성력을 가하도록 설치되어 V벨트가 제1 및 제2 종동휘일 사이에서 밀착되도록 하는 탄성가압기구로 이루어진 것을 특징으로 하는 무단 변속기가 구비된 전기 차량의 동력전달장치.
- 제 1 항에 있어서, 상기 구동풀리조립체의 탄성가압기구는, 구동축 끝단에 고정된 받침판과, 상기 받침판과 한쪽의 제2 구동휘일 사이에 탄력설치된 탄성스프링으로 이루어진 것을 특징으로 하는 무단 변속기가 구비된 전기 차량의 동력전달장치.
- 제 1 항에 있어서, 상기 종동풀리조립체의 탄성가압기구는, 종동축 끝단에 고정된 고정판과, 상기 고정판과 한쪽의 제2 종동휘일 사이에 설치된 탄성스프링으로 이루어진 것을 특징으로 하는 무단 변속기가 구비된 전기 차량의 동력전달장치.
- 제 1 항에 있어서, 상기 구동풀리조립체와 종동풀리조립체에 V벨트와의 슬립을 방지하는 슬립방지기구가 각각 구비된 것을 특징으로 하는 무단 변속기가 구비된 전기 차량의 동력전달장치.
- 제 4 항에 있어서, 상기 구동풀리조립체에 구비된 슬립방지기구는, 한쪽의 제2 구동휘일의 보스부에 형성한 장방형의 경사캠홈과, 상기 구동축에 고정되어 상기 경사캠홈에 안내되는 캠핀으로 구성되고, 상기 경사캠홈은 제2 구동휘일보다 구동축의 회전속도가 빠를 때 캠핀이 제2 구동휘일을 제1 구동휘일쪽으로 밀어 이동시키도록 경사지게 형성된 것을 특징으로 하는 무단 변속기가 구비된 전기 차량의 동력전달장치.
- 제 4 항에 있어서, 상기 종동풀리조립체에 구비된 슬립방지기구는, 한쪽의 제2 종동휘일의 보스부에 형성한 장방형의 경사캠홈과, 다른 한쪽의 제1 종동휘일의 보스부에 형성되어 상기 경사캠홈에 안내되는 캠핀으로 구성되고, 상기 경사캠홈은 제1 종동휘일보다 제2 종동휘일의 회전속도가 빠를 때 캠핀이 제2 종동휘일을 제1 종동휘일쪽으로 밀어 이동시키도록 경사지게 형성된 것을 특징으로 하는 무단 변속기가 구비된 전기 차량의 동력전달장치.
- 제 1 항에 있어서, 상기 웨이트롤러의 바깥둘레면에 복수개의 요홈을 형성한 것을 특징으로 하는 무단 변속기가 구비된 전기 차량의 동력전달장치.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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CN201290000842.1U CN204127262U (zh) | 2012-01-27 | 2012-11-26 | 设有无级变速器的电动车辆动力传送装置 |
JP2014554654A JP2015505599A (ja) | 2012-01-27 | 2012-11-26 | 無段変速機付き電気車両の動力伝達装置 |
US14/374,896 US20150005118A1 (en) | 2012-01-27 | 2012-11-26 | Power transmission device for electric vehicle including continuously variable transmission |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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KR1020120008134A KR101202832B1 (ko) | 2012-01-27 | 2012-01-27 | 무단변속기가 구비된 전기 차량의 동력전달장치 |
KR10-2012-0008134 | 2012-01-27 |
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WO2013111943A1 true WO2013111943A1 (ko) | 2013-08-01 |
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PCT/KR2012/010005 WO2013111943A1 (ko) | 2012-01-27 | 2012-11-26 | 무단변속기가 구비된 전기 차량의 동력전달장치 |
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US (1) | US20150005118A1 (ko) |
JP (1) | JP2015505599A (ko) |
KR (1) | KR101202832B1 (ko) |
CN (1) | CN204127262U (ko) |
WO (1) | WO2013111943A1 (ko) |
Cited By (1)
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CN107289082A (zh) * | 2016-03-30 | 2017-10-24 | 罗伯特·博世有限公司 | 锥环式无级变速箱 |
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EP3121082B1 (en) * | 2014-03-20 | 2018-12-19 | Nissan Motor Co., Ltd | Hybrid vehicle controller |
KR101767319B1 (ko) * | 2015-10-05 | 2017-08-10 | 전남대학교산학협력단 | 콤바인 수집부 구동 안전장치 |
ITUB20156910A1 (it) * | 2015-12-10 | 2017-06-10 | Piaggio & C Spa | Dispositivo di trasmissione a variazione continua con dispositivo di variazione della curva di cambiata |
KR101787994B1 (ko) | 2016-04-26 | 2017-10-23 | 주식회사 영신테크 | 전기차량용 무단변속장치 |
IT201600122192A1 (it) * | 2016-12-01 | 2018-06-01 | Piaggio & C Spa | Trasmissione sincronizzata |
US11732786B2 (en) * | 2021-07-30 | 2023-08-22 | Textron Innovations Inc. | Continuously variable transmission having tunable acceleration and deceleration |
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- 2012-01-27 KR KR1020120008134A patent/KR101202832B1/ko active IP Right Grant
- 2012-11-26 WO PCT/KR2012/010005 patent/WO2013111943A1/ko active Application Filing
- 2012-11-26 JP JP2014554654A patent/JP2015505599A/ja active Pending
- 2012-11-26 US US14/374,896 patent/US20150005118A1/en not_active Abandoned
- 2012-11-26 CN CN201290000842.1U patent/CN204127262U/zh not_active Expired - Fee Related
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Also Published As
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KR101202832B1 (ko) | 2012-11-21 |
JP2015505599A (ja) | 2015-02-23 |
US20150005118A1 (en) | 2015-01-01 |
CN204127262U (zh) | 2015-01-28 |
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