CN218564354U

CN218564354U - Driving motor assembly and automobile

Info

Publication number: CN218564354U
Application number: CN202222595509.8U
Authority: CN
Inventors: 吴绍军; 卢国成; 陈小龙; 孙生; 王勇
Original assignee: Chongqing Changan New Energy Automobile Technology Co Ltd
Current assignee: Deep Blue Automotive Technology Co ltd
Priority date: 2022-09-29
Filing date: 2022-09-29
Publication date: 2023-03-03
Anticipated expiration: 2032-09-29

Abstract

The utility model relates to a driving motor assembly and car, driving motor assembly include driving motor and reduction gear, driving motor's motor shaft and the reduction gear axle spline fit of reduction gear, the cover is equipped with the sealing washer on the motor shaft, sealed lid is installed to the one end of reduction gear axle keep away from a motor shaft, the motor shaft is located with reduction gear axle spline fit's position between sealing washer and the sealed lid. The utility model continuously lubricates the spline by sealing the lubricating grease, and the lubricating effect is better than the consistency and continuity of the oil lubricating effect because the lubricating grease is sealed in a fixed area; need not consider alone for spline department design complicated oil circuit or for lubricated better increase lubricated oil mass, indirect raise the efficiency and reduce the bicycle cost.

Description

Driving motor assembly and automobile

Technical Field

The utility model relates to a new energy automobile technical field, concretely relates to driving motor technique.

Background

The motor is a core component of the electric automobile, provides power for normal running of the automobile and has the same importance degree as human heart for the automobile. The speed reducer is an important part for reducing the speed and increasing the torque of the power of the motor in the electric drive automobile and then transmitting the power to the driving shaft to drive the automobile to run.

The connection between the motor and the speed reducer is generally realized through spline connection, and as the torque transmitted by the spline connection is large and is alternating load, compared with the spline connection combination mode of the traditional fuel vehicle clutch and the transmission input shaft, the spline connection combination mode is changed from flexible connection into rigid connection, the rotating speed is higher, and the anti-support torque needs to be borne. Therefore, higher demands are made on the reliability of the spline connection, and in order to improve the wear resistance of the spline, continuous lubrication of the spline connection is required.

Present electric automobile electric drive system is along with the integrated level is higher and higher, and motor and reduction gear structure height are integrated, and the lubricated gear lubricating oil in mainly adopting the reduction gear of spline department lubricates, and this kind of structural design has the problem in following aspect:

1. lubricating oil flows back through an inner hole of the input shaft after passing through a bearing and a motor shaft oil guide port lubricating spline by a complex oil path design, and poor lubrication exists during low-speed heavy load;

2. in order to fully lubricate the spline part, more lubricating oil is needed, the efficiency is reduced, and the cost of the bicycle is increased;

3. the oil blanket and the cooperation of motor shaft, because the motor shaft anterior segment is external splines, require highly to the assembly centering of motor shaft, and increased the scotch risk of oil blanket.

SUMMERY OF THE UTILITY MODEL

One of the objectives of the present invention is to provide a driving motor assembly to solve the problem of poor lubricating effect in the prior art; the second purpose is to provide a new energy automobile.

In order to realize the purpose, the utility model adopts the technical scheme as follows:

the utility model provides a driving motor assembly, includes driving motor and reduction gear, driving motor's motor shaft and the reduction gear axle spline fit of reduction gear, the cover is equipped with the sealing washer on the motor shaft, the one end that the reduction gear axle kept away from a motor shaft is installed sealed lid, motor shaft and reduction gear axle spline fit's position are located between sealing washer and the sealed lid.

According to the technical means, because the sealing ring and the sealing cover are arranged, a closed space is formed between the sealing ring and the sealing cover, and the spline-matched position of the motor shaft and the speed reducer shaft is located in the closed space, so that the spline-matched position can be continuously lubricated under the rotation and vibration effects of the motor shaft only by arranging a lubricating medium in the closed space, a lubricating oil way is not required to be arranged, the condition of poor lubrication is avoided, and the cost is saved.

Further, lubricating grease is arranged at the position where the spline is matched.

Furthermore, the sealing cover is provided with an air vent, and a sealer plug is arranged on the air vent and used for plugging the air vent.

Further, an oil seal is pressed on the speed reducer shaft.

Further, the sealing cover is in interference fit with the motor shaft.

Furthermore, the motor shaft is provided with an annular mounting groove, and the sealing ring is pressed on the annular mounting groove.

Further, the sealer plug is in interference connection with the sealing cover.

Further, the oil seal is positioned between the rear bearing of the motor and the speed reduction front bearing.

Furthermore, the reducer cavity of the reducer is positioned between the front bearing of the reducer and the rear bearing of the reducer.

A new energy automobile comprises the driving motor assembly.

The utility model has the advantages that:

the utility model continuously lubricates the spline by sealing the lubricating grease, and the lubricating effect is better than the consistency and continuity of the oil lubricating effect because the lubricating grease is sealed in a fixed area;

the utility model does not need to design a complex oil circuit for the spline or increase the amount of lubricating oil for better lubrication, thereby indirectly improving the efficiency and reducing the cost of the bicycle;

the utility model discloses the oil blanket cooperates with the reduction gear shaft, reduces the motor shaft and reduces the speed reduction shaft and assembles the well requirement;

the utility model relates to a sealed end cap of lid and the sealed air vent of covering, ingenious solution produces the assembly difficulty problem that atmospheric pressure arouses because of the airtight air of compression at motor shaft and reduction gear axle rotational distribution in-process.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

The motor comprises a motor body, a motor shaft, a motor front bearing, a motor rear bearing, a motor shaft, a motor front bearing, a sealing ring, a 5 oil seal, a reducer front bearing, a reducer shaft, a sealing cover plug, a 9 sealing cover, a reducer rear bearing, a motor cavity, a reducer cavity, a driving motor and a reducer, wherein the motor rear bearing, the motor shaft, the motor front bearing, the sealing cover plug, the reducer front bearing, the reducer shaft, the reducer rear bearing, the motor cavity, the reducer cavity, the driving motor and the reducer are arranged in the motor body 1.

Detailed Description

The embodiments of the present invention will be described with reference to the accompanying drawings and preferred embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure in the specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are for purposes of illustration only and are not intended to limit the scope of the present invention.

It should be noted that the drawings provided in the following embodiments are only for illustrating the basic concept of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the form, amount and ratio of the components in actual implementation may be changed at will, and the layout of the components may be more complicated.

The embodiment provides a driving motor assembly, as shown in fig. 1, which includes a driving motor 13 and a speed reducer 14, the driving motor 13 has a motor shaft 2, the motor shaft 2 can rotate, the speed reducer 14 has a speed reducer shaft 7, the motor shaft 2 is in spline fit with the speed reducer shaft 7, so that the motor shaft 2 can drive the speed reducer shaft 7 to rotate.

Be provided with annular mounting groove (not shown in the figure) on motor shaft 2, the cover is equipped with sealing washer 4 on the annular mounting groove, sealing washer 4 and motor shaft 2 interference fit, reduction gear shaft 7 is kept away from the tip of motor shaft 2 and is installed sealed lid 9, sealed lid 9 covers reduction gear shaft 7 hole, form confined space between sealed lid 9 and the sealing washer 4, motor shaft 2 is located between the confined space with reduction gear shaft 7 spline fit's position, paint lubricating grease on spline fit's position simultaneously and lubricate the spline, because lubricating grease is in the confined space that sealed lid 9 and sealing washer 4 enclose, consequently, lubricating grease can be located the confined space constantly and continuously lubricate the spline, consequently, need not to set up the oil inlet, avoid lubricated bad problem, the processing cost has been reduced simultaneously.

When the speed reducer shaft 7 is machined, in order to guarantee machining precision, an inner hole of the speed reducer is formed in the speed reducer shaft, clamping of a machine tool is facilitated, and therefore a vent hole is formed in the sealing cover 9, gas resistance is avoided when the sealing cover 9 is assembled, in order to guarantee sealing performance of the sealing cover 9, the sealing cover plug 8 is inserted into the vent hole, and the sealing cover plug 8 is in interference connection with the sealing cover.

The oil seal 5 in this embodiment is disposed on the reducer shaft 7, specifically between the motor rear bearing 1 and the reducer front bearing 6, the reducer 14 has a reducer cavity 12, the reducer cavity 12 is disposed between the reducer front bearing 6 and the reducer rear bearing 10, the driving motor 13 has a motor cavity 11, and the motor cavity 11 is disposed between the motor front bearing 3 and the motor rear bearing 1.

The assembly mode of the embodiment is as follows: the seal ring 4 is fitted into an annular mounting groove in the motor shaft 2, the motor shaft 2 is fitted into the motor side, and the oil seal 5 is pressed into the reducer shaft 7.

A front bearing 6 and a rear bearing 10 of the speed reducer are pressed on a shaft 7 of the speed reducer and are positioned through shaft shoulders, and a sealing cover 9 is pressed on an inner hole of the shaft of the speed reducer for interference sealing.

And (3) coating lubricating grease on the spline-matched position, axially connecting the pressed speed reducer shaft 7 with the motor shaft 2, and axially limiting through the front bearing 6 of the speed reducer and the speed reducer 14.

And finally, pressing the sealing cover plug 8 into the sealing cover 9 to finish the installation.

The embodiment also provides a new energy automobile which is provided with the driving motor assembly.

The above embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model.

Claims

1. The utility model provides a driving motor assembly, includes driving motor and reduction gear, driving motor's motor shaft and the reduction gear axle spline fit of reduction gear, its characterized in that: the motor shaft is sleeved with a sealing ring, a sealing cover is installed at one end, far away from the motor shaft, of the speed reducer shaft, and the position, matched with the spline of the speed reducer shaft, of the motor shaft is located between the sealing ring and the sealing cover.

2. The drive motor assembly of claim 1, wherein: and lubricating grease is arranged at the spline matching position.

3. The drive motor assembly of claim 1, wherein: the sealing cover is provided with an air vent, and a sealer plug is arranged on the air vent and used for plugging the air vent.

4. The drive motor assembly of claim 1, wherein: and an oil seal is pressed on the speed reducer shaft.

5. The drive motor assembly of claim 3, wherein: the sealing cover is in interference fit with the motor shaft.

6. The drive motor assembly of claim 1, wherein: the motor shaft is provided with an annular mounting groove, and the sealing ring is pressed on the annular mounting groove.

7. The drive motor assembly of claim 3, wherein: the sealer plug is in interference connection with the sealing cover.

8. The drive motor assembly of claim 4, wherein: the oil seal is positioned between the motor rear bearing and the speed reduction front bearing.

9. The drive motor assembly of claim 1, wherein: and the reducer cavity of the reducer is positioned between the front bearing of the reducer and the rear bearing of the reducer.

10. The utility model provides a new energy automobile which characterized in that: comprising a drive motor assembly according to any one of claims 1-9.