CN201858327U - Differential coupling stepless automatic speed changer - Google Patents
Differential coupling stepless automatic speed changer Download PDFInfo
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- CN201858327U CN201858327U CN2010205940631U CN201020594063U CN201858327U CN 201858327 U CN201858327 U CN 201858327U CN 2010205940631 U CN2010205940631 U CN 2010205940631U CN 201020594063 U CN201020594063 U CN 201020594063U CN 201858327 U CN201858327 U CN 201858327U
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- bevel planet
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Abstract
The utility model relates to the technical field of a stepless speed changer, in particular to a differential coupling stepless automatic speed changer comprising an input shaft, a speed changing mechanism and an output shaft, wherein the speed changing mechanism comprises a planetary carrier, a planetary bevel gear, a first sun wheel and a second sun wheel; the planetary bevel gear is arranged on the planetary carrier; the first sun wheel and the second sun wheel are respectively arranged at both sides of the planetary bevel gear; the planetary bevel gear is respectively connected with the first sun wheel and the second sun wheel in a meshing way; the input shaft is connected with the first sun wheel; the output shaft is connected with the second sun wheel; a coupler is arranged beside the second sun wheel and comprises a first coupling wheel and a second coupling wheel; the first coupling wheel is connected with the planetary carrier; and the second coupling wheel is connected with the output shaft. With simple structure, small volume, low cost and high practicality, the differential coupling stepless automatic speed changer can automatically adjust the rotation speed ratio of the input shaft and the output shaft according to actual working conditions.
Description
Technical field
The utility model relates to the stepless speed variator technical field, refers in particular to a kind of differential coupling CVT (continuously variable transmission).
Background technique
Speed changer mainly is divided into manual transmission and automatic transmission according to gear shift mode, can be divided into step change transmission and stepless speed variator according to number of steps of speeds.
Traditional manual transmission is widely used in various variable transmission mechanisms already, manual transmission generally all needs engagement clutch to use together, in service at variable transmission mechanism, need cut off the variable speed operation that to realize speed changer with binding operation to clutch, for example in the shift process of automobile, the driver cuts off and is bad in conjunction with cooperating with the action of putting into gear on opportunity of clutch, causes engine misses easily, the shakiness of perhaps putting into gear causes the heavy wear of clutch.
Automatic transmission can make automobile obtain good power character and fuel economy according to engine load and the automatic conversion velocity ratio of vehicle speed condition, and reduces the exhaust emission of motor.
Gearbox with automobile is an example, the automatic transmission of prior art is according to car speed, factor such as engine speed, living load is carried out the lifting gear automatically, do not need to shift gears by driver's operated clutch, automatic transmission is complicated more a lot of than manual transmission, have a lot of aspects inequality, but very big difference is the control aspect.Manual transmission adds retaining or subtract retaining by manual operation, and automatic transmission is to control gear automatically by machine that by the pilot control gear conversion gear is undertaken by hydraulic control device.The SC sigmal control lifting retaining that hydraulic control device is sent here according to closure (throttle) aperture and transmission output shaft.Change according to throttle opening, the modulating valve in the hydraulic control device produces with accelerator pedal and measures the hydraulic pressure that is directly proportional down, and this hydraulic pressure is added to hydraulic control device as the throttle opening signal; There is the governor pressure valve that is assemblied on the output shaft can produce the hydraulic pressure that is directly proportional with rotating speed (speed of a motor vehicle) in addition, is added to hydraulic control device as vehicle speed signal.Therefore, throttle opening signal and vehicle speed signal are just arranged, hydraulic control device is regulated speed changer oil mass (gear) automatically according to these two signals, thus control gearshift opportunity.Driver's (gas pedal) to put one's foot down in car steering, the control throttle opening is the interior hydraulic control device of energy automatic control of transmission just, hydraulic control device can utilize fluid power to remove to control the clutch and the break of epicyclic gear system, to change planetary drive state, if electronic automatic transmission will increase solenoid valve on the basis of the above.ECU (Electrical Control Unit) is by electromagnetic valve automatic transmission working procedure.The ECU input circlult is accepted the signal of sensor and other device inputs, and signal is carried out filtration treatment and amplification, converts the work that electrical signal drives controlled solenoid valve then to.Yet this kind structural volume is big, mechanism is complicated, Heavy Weight, maintenance expenses high and cause the defective of such speed changer particularly evident.
Summary of the invention
The technical problems to be solved in the utility model provide a kind of simple in structure, volume is little, with low cost, and the differential coupling CVT (continuously variable transmission) that can regulate the rotating ratio of input shaft and output shaft according to practical working situation automatically.
In order to solve the problems of the technologies described above, the utility model adopts following technological scheme: differential coupling CVT (continuously variable transmission), comprise input shaft, gear and output shaft, described gear comprises planet stent, be arranged at the bevel planet gear of planet stent, be arranged at first sun gear and second sun gear of bevel planet gear both sides respectively, bevel planet gear is connected with a joggle with first sun gear and second sun gear respectively, input shaft is connected with first sun gear, output shaft is connected with second sun gear, the side of described second sun gear is provided with coupler, this coupler comprises first coupling wheel and second coupling wheel, the first coupling wheel is connected with planet stent, and the second coupling wheel is connected with output shaft.
Wherein, described planet stent is provided with the bevel planet gear axle, and the bevel planet gear pivot bush unit is in this bevel planet gear axle.
Preferably, described planet stent offers cavity, and the number of bevel planet gear axle is four, and an end of four bevel planet gear axles is embedded at described cavity, the number of described bevel planet gear is four, and four bevel planet gears are socketed on four bevel planet gear axles respectively.
Another is preferred, described planet stent offers cavity, and the number of bevel planet gear axle is two, and an end of two bevel planet gear axles is embedded at described cavity, the number of described bevel planet gear is two, and two bevel planet gears are socketed on two bevel planet gear axles respectively.
Wherein, described first coupling wheel middle part offers and is used for the axis hole that output shaft passes, and second sun gear and second coupling wheel are arranged at the both sides of first coupling wheel respectively.
One is preferred again, and described first coupling wheel middle part offers and is used for the axis hole that output shaft passes, and second sun gear and second coupling wheel all are arranged at the left side of first coupling wheel, and second coupling wheel is arranged at the right side of second sun gear.
Wherein, described coupler is magnetic coupling or fluid coupling.
Wherein, described output shaft connects for splined or flat key with second coupling wheel.
The beneficial effects of the utility model are: the utility model provides a kind of differential coupling CVT (continuously variable transmission), comprise input shaft, gear and output shaft, described gear comprises planet stent, be arranged at the bevel planet gear of planet stent, be arranged at first sun gear and second sun gear of bevel planet gear both sides respectively, bevel planet gear is connected with a joggle with first sun gear and second sun gear respectively, input shaft is connected with first sun gear, output shaft is connected with second sun gear, the side of described second sun gear is provided with coupler, this coupler comprises first coupling wheel and second coupling wheel, the first coupling wheel is connected with planet stent, and the second coupling wheel is connected with output shaft.Differential coupling CVT (continuously variable transmission) described in the utility model is in speed-change process, when practical working situation causes that the moment of torsion of output shaft reduces, first coupling wheel of coupler and the speed discrepancy between second coupling wheel reduce gradually, and promptly the rotating ratio of input shaft and output shaft reduces gradually; When practical working situation causes that the moment of torsion of output shaft becomes big, first coupling wheel of coupler and the speed discrepancy between second coupling wheel increase gradually, the rotating ratio that is input shaft and output shaft increases gradually, thereby realize its automatic stepless speed change function, the utility model is not only simple in structure, volume is little, with low cost, and can regulate the rotating ratio of input shaft and output shaft automatically according to practical working situation, practical.
Description of drawings
Fig. 1 is the utility model embodiment one a perspective view.
Fig. 2 is the utility model embodiment one a stereochemical structure decomposing schematic representation.
Fig. 3 is the utility model embodiment one a cross-sectional view.
Fig. 4 is the utility model embodiment two a perspective view.
Fig. 5 is the utility model embodiment three a cross-sectional view.
Embodiment
For the ease of those skilled in the art's understanding, below in conjunction with embodiment and accompanying drawing the utility model is further described, the content that mode of execution is mentioned not is to qualification of the present utility model.
Be the embodiment one of differential coupling CVT (continuously variable transmission) described in the utility model as shown in Figure 1 to Figure 3, comprise input shaft 1, gear and output shaft 2, described gear comprises planet stent 3, be arranged at the bevel planet gear 4 of planet stent 3, be arranged at first sun gear 5 and second sun gear 6 of bevel planet gear 4 both sides respectively, bevel planet gear 4 is connected with a joggle with first sun gear 5 and second sun gear 6 respectively, input shaft 1 is connected with first sun gear 5, output shaft 2 is connected with second sun gear 6, the side of described second sun gear 6 is provided with coupler, this coupler comprises first coupling wheel, 7 and second coupling wheel 8, first coupling wheel 7 is connected with planet stent 3, and second coupling is taken turns 8 and is connected with output shaft 2.In the present embodiment, second sun gear 6 and described output shaft 2 are one-body molded.
In the course of the work, first sun gear 5 rotates with input shaft 1, output shaft 2 is when rotation at the early-stage, the moment of torsion that 2 rotations of driving output shaft need is bigger, at this moment, speed discrepancy between first coupling wheel, 7 and second coupling wheel 8 of coupler is bigger, first sun gear 5 drives bevel planet gear 4 and moves in a circle, first coupling this moment wheel 7 and planet stent 3 rotate under the effect of bevel planet gear 4 comparatively fast, second sun gear 6 rotates slower, the rotating speed of the output shaft 2 that is connected with second sun gear 6 with automatic reduction, thus realize transferring automatically the rotating ratio of big input shaft 1 and output shaft 2.
In above-mentioned speed-change process, when practical working situation caused that the moment of torsion of output shaft 2 reduces, the speed discrepancy between first coupling of coupler wheel, 7 and second coupling wheel 8 reduced gradually, and promptly input shaft 1 reduces gradually with the rotating ratio of output shaft 2; When practical working situation causes that the moment of torsion of output shaft 2 becomes big, speed discrepancy between first coupling wheel, 7 and second coupling wheel 8 of coupler increases gradually, the rotating ratio that is input shaft 1 and output shaft 2 increases gradually, thereby realize the automatic stepless speed change function, the utility model is not only simple in structure, volume is little, with low cost, and can regulate the rotating ratio of input shaft 1 and output shaft 2 automatically according to practical working situation, practical.
The described planet stent 3 of present embodiment is provided with bevel planet gear axle 9, and bevel planet gear 4 pivot bush units are in this bevel planet gear axle 9.Concrete described planet stent 3 offers cavity, the number of bevel planet gear axle 9 is four, one end of four bevel planet gear axles 9 is embedded at described cavity, and the number of described bevel planet gear 4 is four, and four bevel planet gears 4 are socketed on four bevel planet gear axles 9 respectively.
When the rotating speed of second sun gear, 6 rotations is lower than the rotating speed of first sun gear 5, the bevel planet gear 4 that is connected with a joggle with first sun gear 5 and second sun gear 6 rotates, and drive bevel planet gear axle 9 and planet stent 3 rotations, so that the moment of torsion of input shaft 1 is passed to first coupling wheel, 7 and/or second coupling wheel 8 with the kind of drive of differential mechanism, moment of torsion is passed to output shaft 2 by coupler.
Described first coupling of present embodiment is taken turns 7 middle parts and is offered and be used for the axis hole that output shaft 2 passes, and second sun gear 6 and second coupling wheel 8 are arranged at the both sides of first coupling wheel 7 respectively.Preferred implementation is, described coupler is a magnetic coupling, and the speed discrepancy of first coupling wheel, 7 and second coupling wheel 8 can change according to the level of torque of output shaft 2, and passes to output shaft 2 by second sun gear 6 and/or second coupling wheel 8.Certainly, described coupler can also be fluid coupling, equally also can reach above-mentioned technique effect.
The described output shaft 2 of present embodiment and second coupling wheel 8 are splined, and splined can improve output shaft 2 greatly and take turns the 8 coaxial precision of fixedlying connected with second coupling, and practicability is stronger.Can certainly connect for flat key.
Be illustrated in figure 4 as the embodiment two of differential coupling CVT (continuously variable transmission) described in the utility model, be with the difference of the foregoing description one: described planet stent 3 offers cavity, the number of bevel planet gear axle 9 is two, one end of two bevel planet gear axles 9 is embedded at described cavity, the number of described bevel planet gear 4 is two, and two bevel planet gears 4 are socketed on two bevel planet gear axles 9 respectively.Equally also can realize its technique effect, structure is simpler, is applicable to the workplace that transmitting torque is less.
Be illustrated in figure 5 as the embodiment three of differential coupling CVT (continuously variable transmission) described in the utility model, be with the difference of the foregoing description one: described first coupling is taken turns 7 middle parts and is offered and be used for the axis hole that output shaft 2 passes, second sun gear 6 and second coupling wheel 8 all are arranged at the left side of first coupling wheel 7, and second coupling wheel 8 is arranged at the right side of second sun gear 6.In the present embodiment, second sun gear 6 and second coupling wheel 8 all can be assembled with output shaft 2 in advance, reduce the assembling difficulty of differential coupling CVT (continuously variable transmission) described in the utility model, enhance productivity.
What need supplementary notes is, the number of bevel planet gear axle 9 and bevel planet gear 4 can also be six or eight simultaneously, bevel planet gear axle 9 is evenly arranged in planet stent 3, the all sheathed bevel planet gear 4 of each bevel planet gear axle 9, so that transmit bigger moment of torsion, be applicable to the workplace that transmitting torque is bigger.
The foregoing description is three kinds in the preferable implementation of the utility model; in addition; the utility model can also realize by alternate manner that any conspicuous replacement is all within protection domain of the present utility model under the prerequisite that does not break away from the utility model design.
Claims (8)
1. differential coupling CVT (continuously variable transmission), comprise input shaft (1), gear and output shaft (2), described gear comprises planet stent (3), be arranged at the bevel planet gear (4) of planet stent (3), be arranged at first sun gear (5) and second sun gear (6) of bevel planet gear (4) both sides respectively, bevel planet gear (4) is connected with a joggle with first sun gear (5) and second sun gear (6) respectively, input shaft (1) is connected with first sun gear (5), output shaft (2) is connected with second sun gear (6), it is characterized in that: the side of described second sun gear (6) is provided with coupler, this coupler comprises first coupling wheel (7) and second coupling wheel (8), first coupling wheel (7) is connected with planet stent (3), and second coupling wheel (8) is connected with output shaft (2).
2. differential coupling CVT (continuously variable transmission) according to claim 1 is characterized in that: described planet stent (3) is provided with bevel planet gear axle (9), and bevel planet gear (4) pivot bush unit is in this bevel planet gear axle (9).
3. differential coupling CVT (continuously variable transmission) according to claim 2, it is characterized in that: described planet stent (3) offers cavity, the number of bevel planet gear axle (9) is four, one end of four bevel planet gear axles (9) is embedded at described cavity, the number of described bevel planet gear (4) is four, and four bevel planet gears (4) are socketed on four bevel planet gear axles (9) respectively.
4. differential coupling CVT (continuously variable transmission) according to claim 2, it is characterized in that: described planet stent (3) offers cavity, the number of bevel planet gear axle (9) is two, one end of two bevel planet gear axles (9) is embedded at described cavity, the number of described bevel planet gear (4) is two, and two bevel planet gears (4) are socketed on two bevel planet gear axles (9) respectively.
5. differential coupling CVT (continuously variable transmission) according to claim 1, it is characterized in that: described first coupling wheel (7) middle part offers and is used for the axis hole that output shaft (2) passes, and second sun gear (6) and second coupling wheel (8) are arranged at the both sides of first coupling wheel (7) respectively.
6. differential coupling CVT (continuously variable transmission) according to claim 1, it is characterized in that: described first coupling wheel (7) middle part offers and is used for the axis hole that output shaft (2) passes, second sun gear (6) and second coupling wheel (8) all are arranged at the left side of first coupling wheel (7), and second coupling wheel (8) is arranged at the right side of second sun gear (6).
7. differential coupling CVT (continuously variable transmission) according to claim 1 is characterized in that: described coupler is magnetic coupling or fluid coupling.
8. differential coupling CVT (continuously variable transmission) according to claim 1 is characterized in that: described output shaft (2) connects for splined or flat key with second coupling wheel (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205940631U CN201858327U (en) | 2010-11-05 | 2010-11-05 | Differential coupling stepless automatic speed changer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205940631U CN201858327U (en) | 2010-11-05 | 2010-11-05 | Differential coupling stepless automatic speed changer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201858327U true CN201858327U (en) | 2011-06-08 |
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ID=44104134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205940631U Expired - Lifetime CN201858327U (en) | 2010-11-05 | 2010-11-05 | Differential coupling stepless automatic speed changer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201858327U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101988563A (en) * | 2010-11-05 | 2011-03-23 | 东莞市明慧管理咨询有限公司 | Differential coupling continuously-variable automatic transmission |
-
2010
- 2010-11-05 CN CN2010205940631U patent/CN201858327U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101988563A (en) * | 2010-11-05 | 2011-03-23 | 东莞市明慧管理咨询有限公司 | Differential coupling continuously-variable automatic transmission |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110608 Effective date of abandoning: 20130313 |
|
| RGAV | Abandon patent right to avoid regrant |