CN212875588U

CN212875588U - Speed reducing motor assembly of centrally-mounted electric vehicle

Info

Publication number: CN212875588U
Application number: CN202022070109.6U
Authority: CN
Inventors: 臧文叶
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-18
Filing date: 2020-09-18
Publication date: 2021-04-02
Anticipated expiration: 2030-09-18

Abstract

The utility model relates to a put electric motor car gear motor assembly in, which comprises a housing, the casing in be provided with stator, rotor and motor shaft, motor shaft right-hand member output be provided with the center pin through the center pin bearing connection, the right-hand member tip of center pin be provided with the center pin gear, the center pin gear pass through reduction gears and connect main shaft mechanism, main shaft mechanism include main shaft bearing and main shaft, the main shaft on still be equipped with oil blanket and semi-axis, main shaft and center pin be in same axial lead, the right-hand member tip of main shaft assemble in output machine case, output machine incasement be provided with and be used for the output bearing with main shaft right-hand member end fixing, whole output shaft operation is more stable, promotes the life of motor greatly.

Description

Speed reducing motor assembly of centrally-mounted electric vehicle

Technical Field

The utility model belongs to the technical field of the electric motor car motor technique and specifically relates to an in put electric motor car gear motor assembly.

Background

In order to respond to the national call for energy conservation and emission reduction and more convenient travel, the purchase and utilization rate of electric vehicles at home and abroad are greatly increased, and the electric vehicle has the advantages of small and exquisite vehicle body, convenient parking, low use cost and the like. However, due to the fact that the technical levels of domestic electric vehicle manufacturers are different, many manufacturers only make articles on the appearance surface in order to further reduce the selling price of electric vehicle terminals, and the performance of core components such as motors cannot be improved in a delayed manner, so that the existing electric vehicles are poor in performance, high in noise, severe in jitter, poor in assembly and arrangement, and disordered in wiring, and finally the service life of the whole electric vehicle is short.

What is more obvious among the existing problems is that a complex gear set mechanism (generally has 5 sets of gears) is often added to the connection of an output shaft and a speed reducer in a speed reducer assembly, so that the installation volume is increased, the friction is increased, a large amount of heat and noise are easily generated, the output gravity center of a motor shaft and the output shaft is also unstable, and meanwhile, the shaft end of the output shaft is not supported by a corresponding fixed bearing, which are factors seriously influencing the service life of an electric vehicle and need to be improved.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: in order to solve the problems existing in the prior art, an improved speed reducing motor assembly of a middle-placed electric vehicle is provided.

The utility model provides a technical scheme that its technical problem adopted is: a speed reduction motor assembly of a middle-mounted electric vehicle comprises a casing, wherein a stator, a rotor and a motor shaft are arranged in the casing, the output end of the right end of the motor shaft is connected with a central shaft through a central shaft bearing, the end part of the right end of the central shaft is provided with a central shaft gear, the central shaft gear is connected with a main shaft mechanism through a speed reduction mechanism, the main shaft mechanism comprises a main shaft bearing and a main shaft, the main shaft is also provided with an oil seal and a half shaft, the main shaft and the central shaft are positioned on the same axial lead, the end part of the right end of the main shaft is assembled in an output case, an output bearing for fixing the end part of the right end of the main shaft is arranged in the output case;

furthermore, the speed reducing mechanism of the utility model comprises a speed reducer bearing, a speed reducer shaft and a speed reducer gear set arranged on the speed reducer bearing, wherein the speed reducer gear set is respectively connected with the central shaft gear and the main shaft in a transmission way, so that the complex structure of at least 5 groups of traditional gears in the traditional assembly is simplified, the friction and the heating are reduced, and the noise is effectively reduced;

furthermore, the left end of the central shaft in the shell is also provided with a magnetic encoder;

furthermore, the inside of the casing of the utility model is provided with a speed reducer cavity, the speed reducer mechanism is arranged in the speed reducer cavity, and the cavity and the casing are integrally formed;

furthermore, the edge of the shell of the utility model is provided with bolt fixing holes according to the circumference and the equal distance;

furthermore, the upper end of the casing of the utility model is also provided with a positioning connecting handle with holes, which is convenient for positioning connection.

The utility model has the advantages that: the defects in the background technology are overcome, and the method has the following advantages: 1. the structure of the gear set is simplified, the internal friction is greatly reduced, the heat emission is reduced, and the service life is prolonged; 2. the noise is greatly reduced; 3. the output shaft operates more stably, further reduces vibrations and improves the complete machine life-span.

Drawings

Fig. 1 is a schematic structural view of a preferred embodiment of the present invention;

fig. 2 is a schematic diagram of the internal structure of the middle housing of the present invention.

In the figure: 1. the motor comprises a shell, 2. a stator, 3. a rotor, 4. a central shaft bearing, 5. a central shaft, 6. a central shaft gear, 7. a main shaft bearing, 8. a main shaft, 9. an oil seal, 10. a half shaft, 11. an output case, 12. an output bearing, 13. a speed reducer bearing, 14. a speed reducer shaft, 15. a speed reducer gear set, 16. a magnetic encoder, 17. a speed reducer cavity, 18. a bolt fixing hole, 19. a positioning connecting handle and 20. a motor shaft.

Detailed Description

The invention will now be described in further detail with reference to the drawings and preferred embodiments. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

The embodiment of the gear motor assembly of the center-mounted electric vehicle shown in fig. 1 and 2 comprises a housing 1, a stator 2, a rotor 3 and a motor shaft 20 are arranged in the housing 1, the right end of the motor shaft 20 is connected with a central shaft 5 through a central shaft bearing 4, the right end of the central shaft 5 is provided with a central shaft gear 6, the central shaft gear 6 is connected with a main shaft mechanism through a gear reduction mechanism, the main shaft mechanism comprises a main shaft bearing 7 and a main shaft 8, the main shaft 8 is further provided with an oil seal 9 and a half shaft 10, the main shaft 8 and the central shaft 5 are located on the same axial line, the right end of the main shaft 8 is assembled in an output case 11, an output bearing 12 for fixing the right end of the main shaft 8 is arranged in the output case 11, the gear reduction mechanism comprises a gear reducer bearing 13, a gear reducer shaft 14 and a gear reducer set 15 arranged on the gear reducer bearing, the speed reducer gear set 15 is respectively in transmission connection with the central shaft gear 6 and the main shaft mechanism, and a magnetic encoder 16 is further arranged at the left end of the central shaft 5 in the machine shell 1;

the speed reducer is characterized in that a speed reducer cavity 17 is arranged in the machine shell 1, the speed reducing mechanism is arranged in the speed reducer cavity 17, and the cavity and the machine shell 1 are integrally formed.

Bolt fixing holes 18 are formed in the edge of the machine shell 1 at equal intervals according to the circumference; the upper end of the casing 1 is also provided with a positioning connecting handle 19 with a hole, so that the positioning connection is convenient.

The simplified gear set structure has small friction, less heat generation and low noise during operation, and the optimized main shaft 8 is positioned and fixed to enable the operation to be more stable and firm, so that the service life is prolonged.

While the foregoing is directed to embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.

Claims

1. The utility model provides a put electric motor car gear motor assembly, includes casing (1), casing (1) in be provided with stator (2), rotor (3) and motor shaft (20), its characterized in that: motor shaft (20) right-hand member output connect through center pin bearing (4) and be provided with center pin (5), the right-hand member tip of center pin (5) be provided with central shaft gear (6), central shaft gear (6) connect main shaft mechanism through reduction gears, main shaft mechanism include main shaft bearing (7) and main shaft (8), main shaft (8) on still be equipped with oil blanket (9) and semi-axis (10), main shaft (8) and center pin (5) be in same axial lead, the right-hand member tip of main shaft (8) assemble in output machine case (11), output machine case (11) in be provided with and be used for output bearing (12) with main shaft (8) right-hand member end fixing.

2. The electric vehicle speed reducing motor assembly set forth in claim 1, wherein: the speed reducing mechanism comprises a speed reducer bearing (13), a speed reducer shaft (14) and a speed reducer gear set (15) arranged on the speed reducer bearing (13), wherein the speed reducer gear set (15) is in transmission connection with the central shaft gear (6) and the main shaft mechanism respectively.

3. The electric vehicle speed reducing motor assembly set forth in claim 1, wherein: the left end of the central shaft (5) in the machine shell (1) is also provided with a magnetic encoder (16).

4. The electric vehicle speed reducing motor assembly set forth in claim 1, wherein: the speed reducer is characterized in that a speed reducer cavity (17) is arranged in the machine shell (1), and the speed reducing mechanism is arranged in the speed reducer cavity (17).

5. The electric vehicle speed reducing motor assembly set forth in claim 1, wherein: the edge of the machine shell (1) is provided with bolt fixing holes (18) according to the circumference equidistance.

6. The electric vehicle speed reducing motor assembly set forth in claim 1, wherein: the upper end of the machine shell (1) is also provided with a positioning connecting handle (19) with a hole.