CN215059320U - Reduction gear and car - Google Patents
Reduction gear and car Download PDFInfo
- Publication number
- CN215059320U CN215059320U CN202120467485.0U CN202120467485U CN215059320U CN 215059320 U CN215059320 U CN 215059320U CN 202120467485 U CN202120467485 U CN 202120467485U CN 215059320 U CN215059320 U CN 215059320U
- Authority
- CN
- China
- Prior art keywords
- gear
- ring
- planet
- speed reducer
- planet carrier
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Retarders (AREA)
Abstract
The disclosure relates to the technical field of speed reducers, in particular to a speed reducer and an automobile. The reduction gear includes the casing, the planet is arranged, first gear, the second gear, differential mechanism, first adapting unit and second adapting unit, the planet is arranged including ring gear, planet carrier, planet wheel and is used for the sun gear of input power, the second gear is connected with first gear engagement, drive the second gear through first gear and rotate, differential mechanism and second gear connection for with power take off, because differential mechanism and auto wheel are connected, consequently can drive the wheel and rotate, realize that the car traveles. The first connecting component is used for connecting or separating the gear ring and the shell of the speed reducer, and the gear ring is used for adjusting the speed reducer to a first gear after being connected with the shell of the speed reducer; the second adapting unit is used for connecting or separating the gear ring and the planet carrier, and the gear ring is connected with the planet carrier and then used for adjusting the speed reducer to a second stop position.
Description
Technical Field
The disclosure relates to the technical field of speed reducers, in particular to a speed reducer and an automobile.
Background
The method is a feasible change of automobile technology in the face of the arrival of the energy-saving, environment-friendly and low-carbon era and the industrial development of the environment-friendly, high-efficiency and pollution-free electric automobile, and is not only environment-friendly, but also related to the sustainable development in the future. After more than 10 years of efforts, the independent innovation of electric automobiles in China makes an important breakthrough, products developed independently begin to enter the market in batches, the development environment is gradually improved, the industrial development has a better foundation, and the electric automobile development has advantages and comparative advantages of accelerating development.
However, the existing electric automobile is a three-axis speed reducer, and has the problems of complex structure and large occupied space, and the cost is increased by the arrangement of the intermediate shaft.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem or at least partially solve the technical problem, the present disclosure provides a speed reducer and an automobile.
The present disclosure provides a decelerator, including:
a housing;
the planetary gear train comprises a gear ring, a planetary carrier, a planetary gear and a sun gear for inputting power; the sun wheel, the planet wheel and the gear ring are sequentially meshed from inside to outside, and the planet carrier is connected with the planet wheel;
the first gear is fixedly connected with the planet carrier, the planet carrier drives the first gear to rotate, and the first gear is sleeved on the periphery of the sun gear in an empty mode;
the second gear is in meshed connection with the first gear and drives the second gear to rotate through the first gear;
the differential is fixedly connected with the second gear and used for outputting power;
the first connecting component is used for connecting or separating the gear ring and the shell of the speed reducer, and after the gear ring is connected with the shell, the first connecting component is used for adjusting the speed reducer to a first gear;
and the second connecting part is used for connecting or separating the gear ring and the planet carrier, and after the gear ring and the planet carrier are connected, the gear ring and the planet carrier are used for adjusting the speed reducer to a second gear.
Optionally, the speed reducer further comprises a control component, and the control component is used for controlling the first connecting component to connect or disconnect the gear ring with or from the shell of the speed reducer, and controlling the second connecting component to connect or disconnect the gear ring with or from the planet carrier.
Optionally, the first gear and the second gear are both provided as helical gears.
Optionally, the outer diameter of the second gear is larger than the outer diameter of the first gear.
Optionally, the sun gear includes wheel body and axis body of coaxial setting, the wheel body with the planet wheel meshing, the axis body is connected with actuating mechanism.
Optionally, the first gear is sleeved around the shaft body.
Optionally, an output shaft is arranged inside the differential, and the output shaft is used for outputting power to a receiving end.
Optionally, the first connecting means comprises a first synchronizer or a first clutch.
Optionally, the second connecting member comprises a second synchronizer or a second clutch.
The present disclosure also provides an automobile comprising: the speed reducer.
Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:
the speed reducer provided by the embodiment of the disclosure comprises a shell, a planet row, a first gear, a second gear, a differential, a first connecting part and a second connecting part, wherein the planet row comprises a gear ring, a planet carrier, a planet wheel and a sun gear for inputting power; first gear and planet carrier fixed connection drive first gear through the planet carrier and rotate, and first gear free sleeve is in the periphery of sun gear, and the second gear is connected with first gear engagement, drives the second gear through first gear and rotates, and differential mechanism is connected with the second gear for with power take off, because differential mechanism and car wheel connection, consequently can drive the wheel and rotate, realize that the car traveles. The first connecting component is used for connecting or separating the gear ring and the shell of the speed reducer, and the gear ring is used for adjusting the speed reducer to a first gear after being connected with the shell of the speed reducer; the second connecting part is used for connecting or separating the gear ring and the planet carrier, and the gear ring is connected with the planet carrier and then used for adjusting the speed reducer to a second gear. Therefore, when the speed reducer needs to be controlled to be in a first gear, the gear ring is connected with the shell of the speed reducer through the first connecting component, the gear ring is static relative to the shell at the moment, the planet carrier can be driven to rotate through the rotation of the sun gear, the first gear is driven to rotate, the speed reducer is located in the first gear, and the rotating speed of the first gear is lower at the moment. When the speed reducer needs to be controlled to be in the second gear, the gear ring is connected with the planet carrier, the planet carrier is static relative to the sun gear at the moment, namely the power input by the sun gear is the same as the power output by the planet carrier, so that the speed reducer is in the second gear, and the rotating speed of the second gear is higher at the moment. Therefore, the gear shifting can be carried out only by controlling different connection relations between the first connecting part and the second connecting part, the gear shifting device has the advantages of being simple in structure and small in occupied space, meanwhile, the use of the intermediate shaft is reduced, and further the cost is reduced.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
FIG. 1 is a schematic structural diagram of a retarder according to an embodiment of the present disclosure;
FIG. 2 is an enlarged view of a portion of the present disclosure shown in FIG. 1;
FIG. 3 is a first schematic diagram of a retarder according to an embodiment of the present disclosure;
fig. 4 is a second schematic diagram of a retarder according to an embodiment of the disclosure.
Wherein the content of the first and second substances,
1. a housing; 2. a planet row; 21. a sun gear; 22. a ring gear; 23. a planet carrier; 24. a planet wheel; 3. a first gear; 4. a second gear; 5. a differential mechanism; 6. a first connecting member; 7. a second connecting member; 8. and a control component.
Detailed Description
In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.
As shown in fig. 1 to 4, a speed reducer provided by the embodiment of the present disclosure includes a housing 1, a planetary gear row 2, a first gear 3, a second gear 4, a differential 5, a first connecting part 6, and a second connecting part 7, where the planetary gear row 2 includes a ring gear 22, a planet carrier 23, a planet gear 24, and a sun gear 21 for inputting power, the sun gear 21, the planet gear 24, and the ring gear 22 are sequentially engaged from inside to outside, and the planet carrier 23 is connected to the planet gear 24; first gear 3 and planet carrier 23 fixed connection drive first gear 3 through planet carrier 23 and rotate, and first gear 3 idle cover is in the periphery of sun gear 21, and second gear 4 is connected with the meshing of first gear 3, drives second gear 4 through first gear 3 and rotates, and differential mechanism 5 and second gear 4 fixed connection for with power take off, because differential mechanism 5 and auto wheel are connected, consequently can drive the wheel and rotate, realize that the car traveles. The first connecting component 6 is used for connecting or separating the gear ring 22 with or from the shell 1 of the speed reducer, and after the gear ring 22 is connected with the shell 1 of the speed reducer, the gear ring is used for adjusting the speed reducer to a first gear; the ring gear 22 and the planet carrier 23 are connected or disconnected, and after the ring gear 22 and the planet carrier 23 are connected, the ring gear is used for adjusting the speed reducer to the second gear. Therefore, when the speed reducer needs to be controlled to be in the first gear, the gear ring 22 is connected with the casing 1 of the speed reducer through the first connecting component 6, at this time, the gear ring 22 is stationary relative to the casing 1, and the planet carrier 23 can be driven to rotate through the rotation of the sun gear 21, so that the first gear 3 is driven to rotate, the speed reducer is in the first gear, and at this time, the rotating speed of the first gear 3 is low. When the speed reducer needs to be controlled to be in the second gear, the speed reducer is connected with the planet carrier 23 through the gear ring 22, and at the moment, the planet carrier 23 is static relative to the sun gear 21, that is, the power input by the sun gear 21 is the same as the power output by the planet carrier 23, so that the speed reducer is in the second gear, and the rotating speed of the second gear 4 is higher. Therefore, the gear shifting can be carried out only by controlling different connection relations of the first connecting part 6 and the second connecting part 7, and the gear shifting device has the advantages of simple structure and small occupied space.
Wherein, sun gear 21 is the sun gear axle, can regard as the input shaft of power input, sun gear 21 is connected with actuating mechanism promptly, rotation through drive sun gear 21 can drive first gear 3 and rotate, thereby drive second gear 4 and rotate, then with power take off through differential mechanism 5, drive the wheel rotation, realize that the car goes, need not set up too much part, only need sun gear 21 can carry out power input, as far as possible set up spare part can, not only make simple structure but also can reduce the overall space of reduction gear.
Wherein, differential 5 is inside to set up the output shaft, and the output shaft is used for exporting power to the receiving terminal. The receiving end can be a wheel, namely, the differential mechanism controls the wheel to rotate through the output end, so that the automobile is driven to run.
In addition, when the speed reducer needs to be controlled to be in the first gear, the gear ring 22 is connected with the casing 1 of the speed reducer through the first connecting component 6, at this time, the gear ring 22 is stationary relative to the casing 1, the planetary gear 24 can be driven to rotate through the rotation of the sun gear 21, the planetary gear 24 drives the planet carrier 23 to rotate (at this time, the rotation speed ratio of the planet carrier 23 to the sun gear 21 is determined through the diameter ratio of the sun gear 21 to the planetary gear 24 or the number of teeth of the sun gear 21 and the planetary gear 24), the planet carrier 23 drives the first gear 3 to rotate, the first gear 3 drives the second gear 4 to rotate, the second gear 4 drives the differential 5 to rotate, power is output to wheels through the differential 5, and at this time, the rotation speed of the wheels is low.
In addition, when it is necessary to control the speed reducer to be in the second gear, the second connecting part 7 is used for connecting or disconnecting the ring gear 22 and the planet carrier 23, after the ring gear 22 and the planet carrier 23 are connected, because the ring gear 22 is meshed with the planet gears 24, the planet carrier 23 is connected with the planet gears 24, the planet gears 24 and the ring gear 22 are relatively static, and because the sun gear 21 is meshed with the planet gears 24, the sun gear 21 and the planet gears 24 are also relatively static. At this moment, the whole planet row 2 is equivalent to a large gear fixedly connected with an internal part, the large gear drives the first gear 3 to rotate at this moment, the large gear is equivalent to two gears to coaxially rotate, namely, the power input through the sun gear 21 is the same as the power output to the first gear 3, the first gear 3 drives the second gear 4 to rotate at this moment, the second gear 4 drives the differential mechanism 5 to rotate, the power is output to wheels through the differential mechanism 5, and the rotating speed of the wheels is higher at this moment. When the connection is not required, the control part 8 controls the second connecting part 7 to be disconnected.
It should be noted that the second gear 4 is fixedly connected to the housing of the differential 5, so that power is transmitted to the differential 5 and then transmitted to the wheels through the differential 5.
It should also be noted that the speed reducer is a two-shaft speed reducer, and only two shafts are needed to complete gear shifting.
It should be noted that, when the first connecting member 6 connects the ring gear 22 with the case 1 of the reduction gear, the second connecting member 7 is not connected with the ring gear 22 and the carrier 23; when the second connecting member 7 connects the ring gear 22 and the carrier 23, the first connecting member 6 is not connected to the ring gear 22 and the case 1 of the reduction gear.
In some embodiments, the retarder further comprises a control member 8, the control member 8 being adapted to control the first connecting member 6 to connect or disconnect the ring gear 22 to or from the housing 1 of the retarder and the second connecting member 7 to connect or disconnect the ring gear 22 to or from the planet carrier 23, thereby controlling the different gears of the car through the retarder.
Wherein the control member 8 is provided inside the casing 1 of the reducer, connected to the first connecting member 6 and the second connecting member 7, respectively, so as to control the first connecting member 6 to connect or disconnect the ring gear 22 to or from the casing 1, and to control the second connecting member 7 to connect or disconnect the ring gear 22 to or from the carrier 23.
In some embodiments, the sun gear 21 includes a coaxial wheel body and a shaft body, the wheel body is engaged with the planet gears 24, the first gear 3 is sleeved on the outer periphery of the shaft body, and the first gear 3 is fixedly connected with the planet carrier 23. First gear 3 empty cover is in the periphery of axis body, and the rotation through planet carrier 23 drives first gear 3 and rotates, and the axis body can not influence the rotation of first gear 3. Simultaneously, the first gear 3 is sleeved on the periphery of the shaft body in an empty mode, the whole structure can be more compact, and space is saved.
The first gear 3 is sleeved around the shaft body, so that the first gear 3 is driven by the planet carrier 23 to rotate.
In some embodiments, the first gear 3 and the second gear 4 are both provided as helical gears, and the meshing performance of the first gear 3 and the second gear 4 can be better, the contact ratio is large, the structure is compact, and the size of the whole speed reducer is reduced.
Wherein, the outer diameter of second gear 4 is greater than the outer diameter of first gear 3, can slow down first gear 3 through the setting of second gear 4.
In some embodiments, the first connecting part 6 comprises a first synchronizer or first clutch, the ring gear 22 is connected with the housing 1 of the speed reducer through the first synchronizer or first clutch, the ring gear 22 is fixed on the housing 1, then the sun gear 21 drives the planet gears 24 to rotate, the planet gears 24 drive the planet carrier 23 to rotate, the planet carrier 23 drives the first gear 3 to rotate, and therefore the power of the sun gear 21 is reduced and then transmitted to the first gear 3, and the speed reducer can be adjusted to the first gear.
At this time, the control member 8 controls the first synchronizer to connect the ring gear 22 with the case 1 of the reduction gear and fix the ring gear 22 to the case 1, or the control member 8 controls the first clutch to connect the ring gear 22 with the case 1 of the reduction gear and fix the ring gear 22 to the case 1.
In some embodiments, when the second connecting member 7 is used to connect or disconnect the ring gear 22 and the planet carrier 23, the second connecting member 7 may be configured as a second synchronizer or a second clutch, and the ring gear 22 and the planet carrier 23 are connected through the second synchronizer or the second clutch, in this case, the whole planet row 2 is equivalent to a large gear with a relatively stationary internal component, and the large gear drives the first gear 3 to rotate, which is equivalent to two gears coaxially rotate, that is, the power input through the sun gear 21 is the same as the power output to the first gear 3, and in this case, the speed reducer can be adjusted to the second gear.
At this time, the control member 8 controls the second synchronizer to fixedly connect the carrier 23 with the ring gear 22, and the control member 8 controls the second clutch to fixedly connect the carrier 23 with the ring gear 22.
In addition, a synchronizer is used in fig. 3, and a clutch is used in fig. 4.
The car that this disclosed embodiment provided includes: according to the speed reducer, the gear of the automobile can be adjusted through the arrangement of the speed reducer, the gear can be shifted only by controlling different connection relations between the first connecting part 6 and the second connecting part 7, and then power is output to wheels through the differential 5, so that the automobile runs.
The speed reducer in this embodiment is the same as the speed reducer in the above embodiments, and can bring about the same or similar technical effects, and details are not repeated here.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present disclosure, which enable those skilled in the art to understand or practice the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A speed reducer, comprising:
a housing (1);
a planet row (2), the planet row (2) comprising a ring gear (22), a planet carrier (23), planet wheels (24) and a sun gear (21) for inputting power; the sun gear (21), the planet gear (24) and the gear ring (22) are meshed in sequence from inside to outside, and the planet carrier (23) is connected with the planet gear (24);
the first gear (3) is fixedly connected with the planet carrier (23), the planet carrier (23) drives the first gear (3) to rotate, and the first gear (3) is sleeved on the periphery of the sun gear (21) in an empty mode;
the second gear (4), the second gear (4) is meshed with the first gear (3), and the second gear (4) is driven to rotate by the first gear (3);
the differential (5) is fixedly connected with the second gear (4) and is used for outputting power;
a first connecting part (6), wherein the first connecting part (6) is used for connecting or separating the gear ring (22) with or from a shell (1) of the speed reducer, and the gear ring (22) is used for adjusting the speed reducer to a first gear after being connected with the shell (1);
and the second connecting part (7) is used for connecting or separating the gear ring (22) and the planet carrier (23), and the gear ring (22) and the planet carrier (23) are connected and then used for adjusting the speed reducer to a second gear.
2. Retarder according to claim 1, characterised in that it further comprises a control member (8), said control member (8) being adapted to control the first connecting member (6) to connect or disconnect the ring gear (22) to the housing (1) of the retarder and the second connecting member (7) to connect or disconnect the ring gear (22) to the planet carrier (23).
3. A reducer according to claim 1, in which the first gear (3) and the second gear (4) are both provided as helical gears.
4. A reducer according to claim 3, in which the outer diameter of the second gear (4) is greater than the outer diameter of the first gear (3).
5. A reducer according to claim 1, in which the sun wheel (21) comprises a wheel body and a shaft body arranged coaxially, the wheel body being in engagement with the planet wheels (24), and the shaft body being connected to a drive mechanism.
6. Reducer according to claim 5, characterised in that said first gear (3) is free on the periphery of said shaft.
7. A reducer according to any one of claims 1-6, in which the differential (5) has an output shaft internally arranged for power output to a receiving end.
8. Decelerator according to any one of claims 1-6, characterised in that the first connecting part (6) comprises a first synchronizer or a first clutch.
9. Decelerator according to any one of claims 1-6, characterised in that the second connecting part (7) comprises a second synchronizer or a second clutch.
10. An automobile, comprising: a decelerator according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120467485.0U CN215059320U (en) | 2021-03-04 | 2021-03-04 | Reduction gear and car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120467485.0U CN215059320U (en) | 2021-03-04 | 2021-03-04 | Reduction gear and car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215059320U true CN215059320U (en) | 2021-12-07 |
Family
ID=79254698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120467485.0U Active CN215059320U (en) | 2021-03-04 | 2021-03-04 | Reduction gear and car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215059320U (en) |
-
2021
- 2021-03-04 CN CN202120467485.0U patent/CN215059320U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR20150061676A (en) | Power transmission system of hybrid electric vehicle | |
| CN210234641U (en) | Electric drive transmission device for vehicle power system | |
| CN206664249U (en) | A kind of electric automobile gear system | |
| CN109849640A (en) | A kind of electromechanical coupling transmission device for automotive power | |
| CN206242894U (en) | A kind of coaxial-type electric drive axle suitable for electric motor car | |
| CN215059320U (en) | Reduction gear and car | |
| CN215059321U (en) | Reduction gear and car | |
| CN206242915U (en) | A kind of coaxial-type electric drive axle of integrated clutch | |
| CN210821790U (en) | Two-stage speed reduction coaxial electric driving device | |
| CN2931935Y (en) | Speed reducing device for laundry machine | |
| CN113028001A (en) | Reduction gear and car | |
| CN209224929U (en) | Vehicle and its power assembly | |
| CN214564584U (en) | Rear-drive vehicle hybrid power transmission device | |
| CN109849639A (en) | A kind of electric drive transmission device for automotive power | |
| CN112594369A (en) | Reduction gear and car | |
| CN214984784U (en) | Dual-motor hybrid power transmission device | |
| CN112895880B (en) | Hybrid power transmission device of double-motor rear-drive vehicle | |
| CN116101054A (en) | Electric drive bridge provided with three-gear speed change mechanism | |
| CN212604505U (en) | Coaxial two-gear planetary row electric drive axle for automobile | |
| CN210257985U (en) | Electromechanical coupling transmission device for vehicle power system | |
| CN211693389U (en) | Special planetary reducer for AGV (automatic guided vehicle) | |
| CN207225083U (en) | Transmission system of electric automobile and electric automobile | |
| CN212373144U (en) | Power system, transmission device and hybrid vehicle | |
| KR20210074520A (en) | Power train for electric vehicle | |
| CN215059238U (en) | Hybrid vehicle and driving device thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |