CN112803650A

CN112803650A - Shell assembly, motor assembly and motor

Info

Publication number: CN112803650A
Application number: CN202110082110.7A
Authority: CN
Inventors: 高尤坤; 杨晓琴; 张小波; 蓝强; 庞晓宇; 韦兴鸿
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2021-01-21
Filing date: 2021-01-21
Publication date: 2021-05-14

Abstract

The application provides a casing subassembly, motor element and motor. The shell assembly comprises a first shell part and a second shell part, wherein the first shell part and the second shell part are connected to form the whole shell; the first shell part and the second shell part are provided with corresponding positioning structures on a joint surface. Adopt the components of a whole that can function independently mode of first shell and second shell, the casting shaping is convenient, combines to set up location structure on the two parts again, and accurate equipment fast, it is easy and simple to handle.

Description

Shell assembly, motor assembly and motor

Technical Field

The application belongs to the technical field of motors and transmissions, and particularly relates to a shell assembly, a motor assembly and a motor.

Background

In the field of the power assembly for the new energy vehicle, a motor and a transmission are integrated into a whole in the structure of some products. The structure increases the complexity of forming and processing for reducing weight, and has poor manufacturability.

Although the whole housing is formed by sleeving the other part of the housing in the motor. Similarly, the other part is a slender thin-walled part, so that the forming process is difficult, structural deformation exists after forming, the centering precision is difficult to ensure, secondary processing and correction are generally needed, the processing cost is increased, and the practicability is poor.

Disclosure of Invention

Therefore, the technical problem that this application will be solved lies in providing a casing subassembly, motor element and motor, can make things convenient for the shaping, and processing is simple.

In order to solve the above problems, the present application provides a housing assembly including:

the shell comprises a first shell part and a second shell part, wherein the first shell part and the second shell part are connected to form an integral shell; the first shell part and the second shell part are provided with corresponding positioning structures on a joint surface.

Optionally, the positioning structure includes a pin and a counter bore, and the pin is inserted into the counter bore.

Optionally, the first shell portion and the second shell portion are connected through a stud, and a threaded hole for a bolt to penetrate through is further formed in the joint surface.

Optionally, the engagement surface comprises a tang arrangement.

According to another aspect of the present application, there is provided an electric machine assembly comprising a housing assembly as described above.

Optionally, the first casing part comprises a motor casing, the second casing part comprises a transmission casing, and the transmission casing comprises a flange connected with an end face of the motor casing.

Optionally, the motor assembly further includes a rotor shaft and an input rotating shaft, the rotor shaft is disposed in the motor housing, and the input rotating shaft is disposed in the transmission housing; the rotor shaft is connected with the input rotating shaft through a spline.

Optionally, the rotor shaft is provided with an internal spline, and the input rotating shaft is inserted into the rotor shaft.

Optionally, the rotor shaft is connected to the flange via a bearing.

Optionally, the input shaft is connected to the flange via a bearing.

According to an aspect of the present application, there is provided an electric machine comprising a housing assembly as described above or an electric machine assembly as described above.

The application provides a casing subassembly includes: the shell comprises a first shell part and a second shell part, wherein the first shell part and the second shell part are connected to form an integral shell; the first shell part and the second shell part are provided with corresponding positioning structures on a joint surface. Adopt the components of a whole that can function independently mode of first shell and second shell, the casting shaping is convenient, combines to set up location structure on the two parts again, and accurate equipment fast, it is easy and simple to handle.

Drawings

Fig. 1 is an external view schematically illustrating a motor according to an embodiment of the present application;

fig. 2 is an assembled state view of a motor according to an embodiment of the present application;

fig. 3 is a partial structural schematic view of a motor according to an embodiment of the present application;

FIG. 4 is a cross-sectional view of a rotor shaft according to an embodiment of the present application;

fig. 5 is another partial structural schematic diagram of the motor according to the embodiment of the present application;

fig. 6 is a schematic cross-sectional view of an electric machine according to an embodiment of the present invention.

The reference numerals are represented as:

1. a motor housing; 11. a bonding surface; 111. a counter bore; 112. a threaded hole; 113. an inner spigot; 12. a rotor shaft; 121. an internal spline; 13. a bearing; 2. a transmission case; 21. a flange; 211. a bonding surface; 2111. a pin; 2112. a screw; 2113. matching the spigot; 22. an input shaft; 23. and a bearing.

Detailed Description

Referring collectively to fig. 1-6, in accordance with an embodiment of the present application, a housing assembly includes:

Divide into two parts with whole casing, can alleviate the processing degree of difficulty like this, every partial shaping is comparatively simple, and two parts set up location structure on the faying face of connecting moreover, make things convenient for both to carry out quick accurate equipment, and is easy and simple to handle.

In some embodiments, the locating structure includes a pin 2111 and a counterbore 111, the pin 2111 being inserted into the counterbore 111.

The accessible sets up location structure for complex round pin post 2111 and counter bore 111, establishes respectively on first shell and second shell, if round pin post 2111 establishes on first shell, counter bore 111 establishes on the second shell, or round pin post 2111 and counter bore 111 shift the setting, and the homoenergetic conveniently carries out the accurate location to first shell and the second shell of connecting.

In some embodiments, the first shell portion and the second shell portion are connected by a stud, and the joint surface is further provided with a threaded hole 112 for a bolt to pass through.

The first shell part and the second shell part are connected through a stud, and are connected with the threaded hole 112 in the joint surface through penetrating parts such as a screw 2112, a screw rod and the like, so that the assembling operation is convenient.

In some embodiments, the engaging surface includes a tang configuration.

The seam allowance structure is arranged on the joint surface, so that the joint strength of the first shell part and the second shell part can be ensured, and the stability of the whole shell is improved.

Based on the motor is generally provided with parts such as a transmission, the motor adopting the shell assembly can be used for respectively processing the motor shell 1 and the transmission shell 2 and then assembling, so that the processing difficulty is reduced.

In some embodiments, the first housing portion comprises a motor housing 1, the second housing portion comprises a transmission housing 2, the transmission housing 2 comprises a flange 21, and the flange 21 is connected with an end face of the motor housing 1.

The flange 21 on the transmission case 2 is directly connected with the end face of the motor case 1, so that the end cover of the connection end of the motor case 1 and the transmission case 2 can be reduced, namely, the flange 21 is used as the end cover of the motor case 1.

In some embodiments, the motor assembly further comprises a rotor shaft 12 and an input rotary shaft 22, the rotor shaft 12 being disposed within the motor housing 1, the input rotary shaft 22 being disposed within the transmission housing 2; the rotor shaft 12 is connected with the input rotating shaft 22 through a spline.

The rotor shaft 12 of the motor component drives the input rotating shaft 22 to rotate, and the input rotating shaft are connected through splines, so that the motor shell 1 and the transmission shell 2 are convenient to axially insert and connect, and the assembly is easy.

In some embodiments, the rotor shaft 12 is provided with internal splines 121, and the input shaft 22 is inserted into the rotor shaft 12.

The input shaft 22 may be provided with an internal spline 121 and the rotor shaft 12 may be provided with an external spline, which are inserted into each other.

In some embodiments, the rotor shaft 12 is connected to the flange 21 via a bearing 13; the input shaft 22 is connected to the flange 21 via a bearing 23.

The rotor shaft 12 or the input rotating shaft 22 is connected with the flange 21 through a bearing, the flange 21 plays a role in supporting the rotor shaft 12 or the input rotating shaft 22, meanwhile, the flange 21 plays a role in a traditional motor end cover, end cover components are reduced, and the mass can be reduced by 5% -10% in a structure with the same volume.

In a similar way, the flange 21 structure for reducing the speed changer shell 2 can be arranged, the end cover of the motor shell 1 is reserved, and the same purpose can be achieved.

The motor shown in fig. 1-6 comprises a motor casing 1 and a transmission casing 2, eight holes are uniformly arranged on a joint surface 11 of the motor casing 1, two of the eight holes are counterbores 111 and are symmetrically arranged at 180 degrees, and the other holes are threaded holes 112 and are uniformly arranged on an annular joint surface 11. In contrast to the motor of conventional construction, this motor lacks a front end cap which supports the bearing 13 and the rotor shaft 12. Eight holes are uniformly arranged on the joint surface 211 of the transmission case 2, and pins 2111 are placed in two counterbores 111 which are symmetrically distributed at 180 degrees, so that the exposure depth of the pins is half of the total length. The remaining six are through holes through which screws 2112 can be passed.

An input rotating shaft 22 in the transmission case 2 is led into the rotor shaft 12 in the motor case 1, and the input rotating shaft 22 and the rotor shaft 12 are in internal and external spline fit. All the pins 2111 of the combining surface 211 on the transmission case 2 enter the counter bores 111 on the motor case 1, and the six screws 2112 are locked through the other six holes, so that the purpose of tight combination is achieved.

Note that the bearing 13 of the rotor shaft 12 is arranged on the same axis as the bearing 23 of the input rotary shaft 22. The spigot structure of the motor case 1 and the transmission case 2 can achieve sufficient bonding strength.

This application compares with conventional tape end cap structure:

1. the two bearings are arranged on the same part and are connected with the flange 21, and the two bearings are formed by one-step processing, so that the centering precision of the two bearings is more easily ensured, and the assembly precision of the assembly is facilitated;

2. the pin 2111 on the joint surface is utilized to realize positioning, the radial gap is eliminated, the position stability of the bearing is facilitated, and the stable operation of the motor is facilitated;

3. the positioning is realized by the pin 2111, the combination area is small, and the assembly is easier than the radial spigot. Meanwhile, the combination seam allowance is designed to be in small clearance fit, so that the assembly difficulty can be reduced, and the protection function of the pin 2111 in failure can be realized.

It is easily understood by those skilled in the art that the above embodiments can be freely combined and superimposed without conflict.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application. The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be considered as the protection scope of the present application.

Claims

1. A housing assembly, comprising:

2. The housing assembly of claim 1, wherein the locating structure comprises a pin (2111) and a counterbore (111), the pin (2111) being inserted in the counterbore (111).

3. The shell assembly according to claim 1 or 2, wherein the first shell portion and the second shell portion are connected by a stud, and a threaded hole (112) for a bolt to pass through is further formed in the joint surface.

4. The housing assembly of claim 3, wherein the engagement surface includes a tang configuration.

5. An electric motor assembly comprising a housing assembly as claimed in any one of claims 1 to 4.

6. The motor assembly according to claim 5, characterized in that the first housing part comprises a motor casing (1), the second housing part comprises a transmission housing (2), the transmission housing (2) comprises a flange (21), and the flange (21) is connected with an end face of the motor casing (1).

7. The motor assembly according to claim 6, further comprising a rotor shaft (12) and an input rotating shaft (22), the rotor shaft (12) being provided within the motor housing (1), the input rotating shaft (22) being provided within the transmission housing (2); the rotor shaft (12) is in spline connection with the input rotating shaft (22).

8. An electric motor assembly according to claim 7, characterized in that the rotor shaft (12) is provided with internal splines (121), the input rotary shaft (22) being plugged into the rotor shaft (12).

9. An electric machine assembly according to claim 7 or 8, characterized in that the rotor shaft (12) is connected to the flange (21) via a bearing (13).

10. An electric machine assembly according to claim 9, characterized in that the input shaft (22) is connected to the flange (21) via a bearing (23).

11. An electrical machine comprising a housing assembly as claimed in any one of claims 1 to 4 or an electrical machine assembly as claimed in any one of claims 5 to 10.