CN111365422A - Two keep off automatic gearbox and car - Google Patents

Two keep off automatic gearbox and car Download PDF

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Publication number
CN111365422A
CN111365422A CN202010193365.6A CN202010193365A CN111365422A CN 111365422 A CN111365422 A CN 111365422A CN 202010193365 A CN202010193365 A CN 202010193365A CN 111365422 A CN111365422 A CN 111365422A
Authority
CN
China
Prior art keywords
gear
input shaft
shaft
differential
gear pair
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.)
Pending
Application number
CN202010193365.6A
Other languages
Chinese (zh)
Inventor
耿毓巍
梁志海
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Getec Vehicle Technology Suzhou Co ltd
Original Assignee
Getec Vehicle Technology Suzhou Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Getec Vehicle Technology Suzhou Co ltd filed Critical Getec Vehicle Technology Suzhou Co ltd
Priority to CN202010193365.6A priority Critical patent/CN111365422A/en
Publication of CN111365422A publication Critical patent/CN111365422A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/20—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially using gears that can be moved out of gear
    • F16H3/22—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially using gears that can be moved out of gear with gears shiftable only axially
    • F16H3/24—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially using gears that can be moved out of gear with gears shiftable only axially with driving and driven shafts coaxial
    • 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
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
    • F16H3/087—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears
    • F16H3/089—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears all of the meshing gears being supported by a pair of parallel shafts, one being the input shaft and the other the output shaft, there being no countershaft involved
    • 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
    • B60K17/06—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing
    • B60K17/08—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing of mechanical type
    • 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
    • B60K17/16—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing
    • B60K17/165—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing provided between independent half axles
    • 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
    • F16H48/00—Differential gearings
    • F16H48/12—Differential gearings without gears having orbital motion
    • 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
    • F16H48/00—Differential gearings
    • F16H48/38—Constructional details
    • 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
    • F16H48/00—Differential gearings
    • F16H48/38—Constructional details
    • F16H48/42—Constructional details characterised by features of the input shafts, e.g. mounting of drive gears thereon
    • 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
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
    • 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
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
    • 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
    • F16H61/04—Smoothing ratio shift
    • F16H61/0403—Synchronisation before shifting
    • 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
    • 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
    • F16H63/30—Constructional features of the final output mechanisms
    • F16H63/34—Locking or disabling mechanisms
    • F16H63/3416—Parking lock mechanisms or brakes in the transmission
    • F16H63/3425—Parking lock mechanisms or brakes in the transmission characterised by pawls or wheels
    • 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
    • F16H61/04—Smoothing ratio shift
    • F16H61/0403—Synchronisation before shifting
    • F16H2061/0422—Synchronisation before shifting by an electric machine, e.g. by accelerating or braking the input shaft
    • 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
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/0021—Transmissions for multiple ratios specially adapted for electric vehicles
    • 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
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
    • F16H2200/0034—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising two forward speeds

Abstract

The invention discloses a two-gear automatic transmission and an automobile, wherein the two-gear automatic transmission comprises an input shaft which is sleeved on a differential half shaft in an empty mode, a motor is fixedly arranged on the input shaft, and the central axes of the motor, the input shaft and the differential half shaft are coaxial; an intermediate shaft which is arranged in parallel with the input shaft and used for receiving power transmitted by the input shaft is arranged on one side of the input shaft, a first gear pair and a second gear pair are arranged between the intermediate shaft and the differential, and a synchronizer which can be selectively coupled with the first gear pair or the second gear pair is arranged between the first gear pair and the second gear pair. The invention has the following beneficial effects: the output shaft and the input shaft of the differential are coaxially arranged, the longitudinal size of the transmission is reduced, the support of a bearing arranged in the transmission shell is combined, the integral rigidity is ensured, and meanwhile, the structure of the differential is more compact, the size is small, and the whole vehicle carrying is facilitated.

Description

Two keep off automatic gearbox and car
Technical Field
The invention relates to the technical field of automobiles, in particular to a two-gear automatic transmission and an automobile.
Background
The transmission is the core of an automobile power assembly, and has a plurality of internal components and a complex structure. In a pure electric vehicle transmission system, a transmission with a fixed speed ratio is mostly used for speed reduction and torque increase, so that the requirement on a pure electric vehicle driving motor is very high, the development cost of the whole vehicle is greatly increased, more driving motors cannot run in a high-efficiency area, and the driving range of the pure electric vehicle is reduced. The driving motor of the pure electric vehicle has good speed regulation characteristic, the number of gears of the pure electric vehicle transmission system is not too large, and the two-gear transmission is found to be a reasonable pure electric vehicle transmission system through parameter matching of the pure electric vehicle power transmission system. At present, two-gear transmissions developed on pure electric vehicles mainly comprise a mechanical Manual Transmission (MT), an Automatic Mechanical Transmission (AMT) and a double-clutch automatic transmission (DCT).
For example, chinese patent CN201980080U discloses an electric vehicle powertrain, which includes a housing, a motor, a power input shaft driven by the motor, an output shaft, a synchronizer, a differential, a gear ring, and a gear shift mechanism, wherein the motor is connected to the power input shaft through a clutch, a first gear pair and a second gear pair are disposed on the input shaft and the output shaft, and the first gear pair and the second gear pair are selected by controlling the synchronizer through the gear shift mechanism. The problem that the longitudinal size is large exists in the structure, and because the differential assembly and the motor output shaft are arranged in parallel at intervals, the mechanism arrangement of the electric automobile with a compact structure causes great trouble.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a two-gear automatic transmission and an automobile.
The purpose of the invention is realized by the following technical scheme:
a two-gear automatic transmission comprises an input shaft which is sleeved on a differential half shaft in an empty mode, wherein a motor is fixedly arranged on the input shaft, and the central axes of the motor, the input shaft and the differential half shaft are coaxial; an intermediate shaft which is arranged in parallel with the input shaft and used for receiving power transmitted by the input shaft is arranged on one side of the input shaft, a first gear pair and a second gear pair are arranged between the intermediate shaft and the differential, and a synchronizer which can be selectively coupled with the first gear pair or the second gear pair is arranged between the first gear pair and the second gear pair.
Preferably, a driving wheel is fixedly arranged on the input shaft, a driven wheel is fixedly arranged on the intermediate shaft, and the driven wheel is coupled with the driving wheel.
Preferably, the motor comprises a rotor and a stator, and the rotor is fixedly connected with the input shaft.
Preferably, the first-gear pair comprises a first-gear driving gear sleeved on the intermediate shaft in a hollow mode and a driven gear arranged on the differential case, and the first-gear driving gear is meshed with the driven gear.
Preferably, the second gear pair includes a second gear driving gear and a main reduction gear of the differential gear, which are loosely fitted over the intermediate shaft, and the second gear driving gear is engaged with the main reduction gear.
Preferably, the distance from the input shaft to the intermediate shaft is less than half the height of the motor.
Preferably, a parking ratchet wheel is fixedly arranged on the differential.
Preferably, a short idler shaft is arranged on the other side of the input shaft, a connecting gear and a parking ratchet wheel are fixedly arranged on the short idler shaft, and the connecting gear is meshed with the driven gear.
Preferably, the method is suitable for a front axle system or a rear axle system.
The invention also discloses a pure electric automobile which only comprises the two-gear automatic transmission.
The invention also discloses a hybrid electric vehicle which comprises an engine driving system and the two-gear automatic transmission.
The invention has the following beneficial effects:
1. the output shaft and the input shaft of the differential are coaxially arranged, so that the longitudinal size of the transmission is reduced, the mass is reduced, the energy consumption is reduced, and the integral rigidity is ensured by combining the support of a bearing arranged in the transmission shell;
2. the driven gear and the differential are integrally and fixedly connected and mounted, the design is ingenious, the structure is simple, the performance is reliable, the disassembly and the maintenance are convenient, and the device is suitable for large-scale popularization and application;
3. the invention is more compact, light in weight and small in volume, and is beneficial to carrying the whole vehicle.
Drawings
The technical scheme of the invention is further explained by combining the accompanying drawings as follows:
FIG. 1: the structure of the first embodiment of the invention is shown schematically;
FIG. 2: the structure of the second embodiment of the present invention is schematically illustrated.
Detailed Description
The present invention will be described in detail below with reference to specific embodiments shown in the drawings. These embodiments are not intended to limit the present invention, and structural, methodical, or functional changes that may be made by one of ordinary skill in the art in light of these embodiments are intended to be within the scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1, the present invention discloses a two-gear automatic transmission, which includes an input shaft 1, wherein a motor 13 is fixedly disposed on the input shaft 1, the motor 13 includes a rotor 131 and a stator 132, and the rotor 131 is fixedly connected to the input shaft 1 for driving the input shaft 1 to rotate. In the above, the input shaft 1 is a hollow input shaft, and is freely sleeved on the differential half shaft 31, and the central axes of the input shaft 1, the motor 13 and the differential half shaft 31 are coaxial, so that the design reduces the longitudinal size of the transmission, reduces the mass, reduces the energy consumption, and ensures the integral rigidity by combining the support of the bearing arranged in the transmission shell. In addition, the motor 13 is directly used for driving, the starting response is fast, and the acceleration performance is greatly improved. Further, wheels are fixedly arranged at two ends of the differential half shaft 31. Furthermore, the distance from the input shaft 1 to the intermediate shaft 2 is less than half of the height of the motor 13, so that the longitudinal size of the transmission is further ensured, the mechanism arrangement of the electric automobile is facilitated, the structure is more compact, the size is small, and the whole automobile carrying is facilitated.
An intermediate shaft 2 which is arranged in parallel with the input shaft 1 and used for receiving power transmitted by the input shaft 1 is arranged on one side of the input shaft 1, a first gear pair 4 and a second gear pair 5 are arranged between the intermediate shaft 2 and the differential mechanism 3, and a synchronizer 6 which can be selectively coupled with the first gear pair 4 or the second gear pair 5 is arranged between the first gear pair 4 and the second gear pair 5. The engagement of the synchronizer 6 with the first gear driving gear and the second gear driving gear belongs to the prior art, and is not described herein again. In the above, the first-gear pair 4 includes the first-gear driving gear 41 loosely fitted on the intermediate shaft 2 and the driven gear 32 provided on the case of the differential 3, and the first-gear driving gear 41 and the driven gear 32 are engaged with each other. The second gear pair 5 comprises a second gear driving gear 51 sleeved on the intermediate shaft 2 in a hollow manner and a main reduction gear 33 of the differential mechanism 3, and the second gear driving gear 51 is meshed with the main reduction gear 33. The driven gear and the differential are fixedly connected in the structure, so that the number of parts is small, the quality of the whole box is effectively reduced, and the energy consumption is reduced. The design is ingenious, the structure is succinct, the dependable performance, convenient to detach and maintenance are applicable to extensive popularization and application.
In this embodiment, a driving wheel 12 is fixedly disposed on the input shaft 1, a driven wheel 21 is fixedly disposed on the intermediate shaft 2, and the driven wheel 21 is coupled with the driving wheel 12 to realize power transmission between the input shaft 1 and the intermediate shaft 2.
In the present invention, a P-gear parking structure is also disclosed, and as shown in the first embodiment shown in fig. 1, a parking ratchet wheel 34 is fixedly arranged on the differential 3 to realize automatic parking. In the second embodiment shown in fig. 2, a short idler shaft 7 is provided on the other side of the input shaft 1, a connecting gear 71 and a parking ratchet wheel 34 are fixedly provided on the short idler shaft 7, and the connecting gear 71 is meshed with the driven gear 32. When the invention needs to park: the parking pawl is driven through the push rod assembly, and then the parking pawl is matched with the parking ratchet wheel 5, so that parking is achieved.
The invention further discloses a pure electric vehicle which at least comprises the two-gear transmission for the electric vehicle. Of course, the transmission can be suitable for front and rear electric bridges, and a pure electric drive mode is realized. Of course, the hybrid electric vehicle can also be used in combination with an engine to realize a hybrid mode, so that the hybrid electric vehicle is formed. The above application modes are all within the protection scope of the present invention and are not specifically limited.
The operation of the present invention is disclosed below, and when the vehicle requires a first gear output, the synchronizer 6 couples the first gear drive gear with the intermediate shaft, so that the motor transmits torque to the differential mechanism sequentially through the input shaft, the drive gear, the driven gear, the intermediate shaft, the first gear drive gear, and the driven gear. When the automobile needs to output in the second gear, the synchronizer 6 enables the second-gear driving wheel to be coupled with the intermediate shaft, and therefore the motor sequentially transmits torque to the differential mechanism through the input shaft, the driving wheel, the driven wheel, the intermediate shaft, the second-gear driving gear and the main reduction gear, and the automobile is simple and convenient.
It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.
The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.

Claims (10)

1. Two keep off automatic gearbox, its characterized in that: the device comprises an input shaft (1) which is sleeved on a differential half shaft (31) in an empty mode, wherein a motor (13) is fixedly arranged on the input shaft (1), and the central axes of the motor (13), the input shaft (1) and the differential half shaft (31) are coaxial; one side of the input shaft (1) is provided with an intermediate shaft (2) which is arranged in parallel with the input shaft and used for receiving power transmitted by the input shaft (1), a first gear pair (4) and a second gear pair (5) are arranged between the intermediate shaft (2) and the differential mechanism (3), and a synchronizer (6) which can be selectively coupled with the first gear pair (4) or the second gear pair (5) is arranged between the first gear pair (4) and the second gear pair (5).
2. The two speed automatic transmission of claim 1, wherein: the input shaft (1) is fixedly provided with a driving wheel (12), the intermediate shaft (2) is fixedly provided with a driven wheel (21), and the driven wheel (21) is coupled with the driving wheel (12).
3. The two speed automatic transmission of claim 1, wherein: the motor (13) comprises a rotor (131) and a stator (132), and the rotor (131) is fixedly connected with the input shaft (1).
4. The two speed automatic transmission of claim 1, wherein: the first gear pair (4) comprises a first gear driving gear (41) which is sleeved on the intermediate shaft (2) in a hollow mode and a driven gear (32) which is arranged on a shell of the differential (3), and the first gear driving gear (41) is meshed with the driven gear (32).
5. The two speed automatic transmission of claim 1, wherein: the two-gear pair (5) comprises a two-gear driving gear (51) and a main reduction gear (33) of the differential (3), wherein the two-gear driving gear (51) is sleeved on the intermediate shaft (2) in an empty mode, and the two-gear driving gear (51) is meshed with the main reduction gear (33).
6. The two speed automatic transmission of claim 1, wherein: and a parking ratchet wheel (34) is fixedly arranged on the differential (3).
7. The two speed automatic transmission of claim 4, wherein: the other side of the input shaft (1) is provided with a short idler shaft (7), a connecting gear (71) and a parking ratchet wheel (34) are fixedly arranged on the short idler shaft (7), and the connecting gear (71) is meshed with the driven gear (32).
8. The two speed automatic transmission of claim 1, wherein: the method is suitable for a front axle system or a rear axle system.
9. An automobile, characterized in that: comprising only a two speed automatic transmission according to any of claims 1 to 8.
10. An automobile, characterized in that: comprising an engine drive system and a two speed automatic transmission according to any of claims 1 to 8.
CN202010193365.6A 2020-03-18 2020-03-18 Two keep off automatic gearbox and car Pending CN111365422A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010193365.6A CN111365422A (en) 2020-03-18 2020-03-18 Two keep off automatic gearbox and car

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010193365.6A CN111365422A (en) 2020-03-18 2020-03-18 Two keep off automatic gearbox and car

Publications (1)

Publication Number Publication Date
CN111365422A true CN111365422A (en) 2020-07-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010193365.6A Pending CN111365422A (en) 2020-03-18 2020-03-18 Two keep off automatic gearbox and car

Country Status (1)

Country Link
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114435106A (en) * 2022-02-24 2022-05-06 北方汤臣传动科技有限公司 Electric drive axle structure for hybrid new energy automobile
WO2022135407A1 (en) * 2020-12-23 2022-06-30 武汉路特斯汽车有限公司 Coaxial pure electric vehicle power system having power disconnection function and vehicle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022135407A1 (en) * 2020-12-23 2022-06-30 武汉路特斯汽车有限公司 Coaxial pure electric vehicle power system having power disconnection function and vehicle
CN114435106A (en) * 2022-02-24 2022-05-06 北方汤臣传动科技有限公司 Electric drive axle structure for hybrid new energy automobile

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