CN212429650U

CN212429650U - Two keep off automatic gearbox and car

Info

Publication number: CN212429650U
Application number: CN202020345001.0U
Authority: CN
Inventors: 耿毓巍; 梁志海
Original assignee: Getec Vehicle Technology Suzhou Co ltd
Current assignee: Getec Vehicle Technology Suzhou Co ltd
Priority date: 2020-03-18
Filing date: 2020-03-18
Publication date: 2021-01-29
Anticipated expiration: 2030-03-18

Abstract

The utility model 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 mechanism half shaft in an empty way, a motor is fixedly arranged on the input shaft, and the central axes of the motor, the input shaft and the differential mechanism 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 beneficial effects of the utility model are mainly embodied in that: differential mechanism's output shaft and coaxial setting of input shaft reduce the longitudinal dimension of derailleur to combine to set up the support at the inside bearing of gearbox housing, ensure holistic rigidity, simultaneously, make the utility model discloses the structure is compacter, and is small, is favorable to whole car to carry on.

Description

Two keep off automatic gearbox and car

Technical Field

The utility model relates to the field of automotive technology, particularly, especially, relate to a two keep off automatic gearbox and car.

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.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough of prior art existence, provide a two keep off automatic gearbox and car.

The purpose of the utility model is realized through 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 utility model also discloses a pure electric vehicles only includes like foretell two keep off automatic gearbox.

The utility model also discloses a mix and move car, including engine-driven system to and two keep off automatic gearbox as above.

The beneficial effects of the utility model are mainly embodied in that:

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 utility model discloses it is compacter, light in weight, small, be favorable to whole car to carry on.

Drawings

The technical scheme of the utility model is further explained by combining the attached drawings as follows:

FIG. 1: the structure of the first embodiment of the present invention is schematically illustrated;

FIG. 2: the utility model discloses the structural schematic of second embodiment.

Detailed Description

The present invention will be described in detail below with reference to specific embodiments shown in the drawings. However, these embodiments are not limited to the present invention, and structural, method, or functional changes made by those skilled in the art according to these embodiments are all included in 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 the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not 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 is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 accompanying drawings in conjunction with embodiments.

As shown in fig. 1, the present invention discloses a two-gear automatic transmission, which comprises an input shaft 1, wherein a motor 13 is fixedly disposed on the input shaft 1, the motor 13 comprises 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.

The utility model discloses in, also reveal to the structure that P kept off the parking, as the first embodiment shown in fig. 1, differential mechanism 3 is last to be set firmly parking ratchet 34 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 utility model discloses need the parking: 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 utility model also discloses a pure electric vehicle, it includes as above at least that electric automobile keeps off the derailleur with two. Of course, the utility model discloses a derailleur can be applicable to the front and back electric bridge, realizes pure electric drive mode. 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 all belong to the protection category of the utility model, do not specifically limit.

Reveal next the utility model discloses a working process, when the car needs one to keep off the output, synchronizer 6 makes one keep off driving gear and jackshaft coupling, and the motor loops through input shaft, action wheel like this, keeps off driving gear and driven gear with the moment of torsion transmission to differential mechanism from driving wheel, jackshaft, one. 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 list of details is only for the practical implementation of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the technical spirit of the present invention should be included in the scope of the present invention.

Claims

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.