CN218140866U

CN218140866U - Integrated alloy structure of electric motor car motor steel ring end cover

Info

Publication number: CN218140866U
Application number: CN202222774135.6U
Authority: CN
Inventors: 晏小青
Original assignee: Zhejiang Lvju Vehicle Industry Co ltd
Current assignee: Zhejiang Lvju Vehicle Industry Co ltd
Priority date: 2022-10-20
Filing date: 2022-10-20
Publication date: 2022-12-27
Anticipated expiration: 2032-10-20

Abstract

The utility model provides an electric motor car motor steel ring end cover integration alloy structure belongs to electric motor car motor steel ring technical field. The motor steel ring screw connection structure solves the problems that the existing motor steel ring screw connection is unreliable, the internal space is small, the heat dissipation performance of a motor is poor and the sealing performance is not high. This electric motor car motor steel ring end cover integration alloy structure, including the steel ring main part, the junk ring, side cover and hub cap, side cover and junk ring alloying design as an organic whole, adopt the integrative casting of aluminium iron bimetal, the side cover contains the side cover main part, inner circle cooperation portion and tenon fourth of the twelve earthly branches cooperation portion, inner circle cooperation portion embedding junk ring inner wall, the junk ring contains the junk ring main part, connecting portion one and the connecting portion two of below of junk ring main part top, the junk ring main part pressure equipment is at steel ring main part inner wall, connecting portion one forms the cooperation of tenon fourth of the twelve earthly branches with tenon fourth of the twelve earthly branches cooperation portion, the hub cap contains hub cap main part and step, step and connecting portion two adopt the screw fastening. The utility model has the advantages of the structure is reliable, inner space is great, the motor thermal diffusivity is better and the leakproofness is high.

Description

Integrated alloy structure of electric motor car motor steel ring end cover

Technical Field

The utility model belongs to the technical field of electric motor car motor steel ring, a steel ring and end cover of electric motor car motor are related to, in particular to electric motor car motor steel ring end cover integration alloy structure.

Background

The outer mechanism of the motor of the electric vehicle generally comprises a steel ring, a lining ring, a side cover and a hub cover, the side cover and the hub cover of the steel ring of the rear wheel of the current electric vehicle generally adopt screw locking and are combined with glue beating for fastening and sealing, the assembly form is complex in process, the screw fastening torque must be in place when the assembly form is required, and the glue beating must form a complete sealing ring, so the assembly process is complex and volatile. In addition, in the actual use process of the steel ring structure, the screw is easy to loosen or rust due to erosion of rainwater, dirt and the like, so that the driving safety is influenced.

Secondly, in order to improve the performance (power, torque and the like) of the electric vehicle, only the external dimension of the motor of the electric vehicle can be enlarged, and the fastest method for rapidly improving the performance of the motor is to increase the diameter of the inner diameter of the lining ring. Therefore, an integrated pure iron structure of the steel ring cover is available in the market, the performance of the steel ring cover is improved, and the cost is reduced. But the heat dissipation of the motor is poor, the endurance mileage is affected, and the motor with the structure has poor sealing performance and is easy to leak water.

Therefore, what is needed is a high performance alloy structure for integrating the motor steel ring and the end cap of the electric vehicle, which reduces the use of screws, increases the structural strength of the steel ring, improves the performance, increases the inner diameter of the lining ring, and is convenient for heat dissipation, installation, water prevention and cost reduction.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide an inner space great, simple to operate, the heat dissipation is good, the leakproofness is good and the lower electric motor car motor steel ring end cover integration alloy structure of cost.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides an electric motor car motor steel ring end cover integration alloy structure, includes steel ring main part, junk ring, side cover and hub cap, its characterized in that, side cover and junk ring as an organic whole alloying design, and adopt the bimetal of aluminium iron integrative casting to form, the side cover contain side cover main part, inner circle cooperation portion and tenon fourth of the twelve earthly branches cooperation portion, inner circle cooperation portion embedding junk ring inner wall, the junk ring contain the junk ring main part, the connecting portion one of junk ring main part top and the connecting portion two of junk ring main part below, the pressure equipment of junk ring main part at steel ring main part inner wall, connecting portion one and tenon fourth of the twelve earthly branches cooperation portion form tenon fourth of the twelve earthly branches cooperation, the hub cap contain hub cap main part and step, step and the cooperation of connecting portion two adopt the screw fastening.

In the above-mentioned integrated alloy structure for the motor steel ring and the end cover of the electric vehicle, the side cover is made of aluminum alloy, and the lining ring is made of iron.

In foretell electric motor car motor steel ring end cover integration alloy structure, a tenon fourth of twelve earthly branches cooperation portion and a connecting portion structure the same and can cooperate each other, should tenon fourth of twelve earthly branches cooperation portion and connecting portion one form by tenon fourth of twelve earthly branches unit circumference array, tenon fourth of twelve earthly branches unit contain concatenation face, bellied tenon and with the mortise of tenon looks adaptation, the tenon be the dovetail shape.

In the above-mentioned integrated alloy structure for the motor steel ring and the end cover of the electric vehicle, a tapered inclined plane is arranged above the connecting part, and the inclination angle of the tapered inclined plane is the same as the inclination angles of the inclined plane of the mortise and tenon joint part and the inclined plane of the inner ring joint part.

In the above-mentioned electric motor car motor steel ring end cover integration alloy structure, step periphery circumference array have a plurality of trapezoidal boss, trapezoidal boss on seted up the screw hole, and this screw hole is connected with the mounting screw.

Compared with the prior art, this integrative alloy structure of electric motor car motor steel ring end cover has following advantage:

1. the lining ring and the side cover are integrally designed, and are subjected to bimetal casting, so that the threaded connection on one side of the lining ring is eliminated, the thickness of the lining ring can be greatly reduced, the internal space of a wheel steel ring is enlarged, a wheel hub motor with a larger size can be manufactured, and the overall performance of the electric vehicle is improved;

2. the lining ring and the side cover are not in threaded connection, and an integrated design is adopted, so that the production cost can be reduced, the assembly steps are simplified, and meanwhile, the sealing performance of the motor is improved.

Drawings

Fig. 1 is a schematic sectional structure diagram of the alloying wheel steel ring and the end cover.

Fig. 2 is a schematic three-dimensional structure diagram of the alloying wheel steel ring and the end cover.

Fig. 3 is a schematic three-dimensional structure diagram of the alloying wheel steel ring and the end cover.

Fig. 4 is a schematic perspective view of the alloying wheel rim cover.

In the figure, 1, a steel ring main body; 2. a gasket; 3. a side cover; 4. a hub cap; 5. an inner ring engagement portion; 6. a tenon-and-mortise joint part; 7. a gasket body; 8. a first connecting part; 9. a second connecting part; 10. a step; 11. splicing the surfaces; 12. a tenon; 13. b, mortise drilling; 14. trapezoidal boss.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, 2, 3, and 4, the integrated alloy structure of the electric vehicle motor steel ring end cover includes a steel ring main body 1, a lining ring 2, a side cover 3, and a hub cover 4, wherein the side cover 3 and the lining ring 2 are designed to be an integrated alloy and are formed by casting an aluminum-iron bimetal, the side cover 3 includes a side cover main body, an inner ring matching portion 5, and a mortise-tenon matching portion 6, the inner ring matching portion 5 is embedded into an inner wall of the lining ring 2, the lining ring 2 includes a lining ring main body 7, a first connecting portion 8 above the lining ring main body 7, and a second connecting portion 9 below the lining ring main body 7, the lining ring main body 7 is press-mounted on the inner wall of the steel ring main body 1, the first connecting portion 8 and the mortise-tenon matching portion 6 form a mortise-tenon matching, the hub cover 4 includes a hub cover main body and a step 10, and the step 10 is matched with the second connecting portion 9 and fastened by a screw.

In a further elaboration, the side cover 3 is made of aluminum alloy, and the good heat conductivity of aluminum is beneficial to better heat dissipation of the hub motor. The lining ring 2 is made of iron material, so that the wheel steel ring can bear larger external stress and is not easy to deform.

Preferably, a mortise and tenon joint matching part 6 and a connecting part 8 are the same in structure and can be mutually matched, the mortise and tenon joint matching part 6 and the connecting part 8 are formed by a mortise and tenon joint unit circumferential array, the mortise and tenon joint unit comprises a splicing surface 11, a raised tenon 12 and a mortise 13 matched with the tenon 12, and the tenon 12 is in a dovetail tenon shape.

Preferably, a conical inclined plane is arranged above the first connecting part 8, and the inclined angle of the conical inclined plane is the same as the inclined planes of the mortise and tenon matching part 6 and the inner ring matching part 5.

In a further elaboration, the step 10 is circumferentially arrayed with a plurality of trapezoidal bosses 14 at the periphery thereof, and the trapezoidal bosses 14 are provided with threaded holes, and the threaded holes are connected with mounting screws. Compared with the traditional method of directly forming the threaded holes in the lining ring main body 7, the structure has the advantages that the threaded holes are outwards moved to the step 10 and the trapezoid lug boss 14, so that the thickness of the lining ring main body 7 is reduced, and the installation space of the internal hub motor is enlarged.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms steel ring body 1, lining ring 2, side cover 3, hub cover 4, inner ring fitting 5, mortise and tenon fitting 6, lining ring body 7, first connecting part 8, second connecting part 9, step 10, splicing face 11, tenon 12, mortise 13, trapezoid boss 14 and the like are used more frequently herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. The integrated alloy structure of the electric vehicle motor steel ring end cover comprises a steel ring main body (1), a lining ring (2), an edge cover (3) and a hub cover (4), and is characterized in that the edge cover (3) and the lining ring (2) are designed in an integrated alloying mode and are formed by casting aluminum-iron bimetal in an integrated mode, the edge cover (3) comprises an edge cover main body, an inner ring matching portion (5) and a mortise-tenon matching portion (6), the inner ring matching portion (5) is embedded into the inner wall of the lining ring (2), the lining ring (2) comprises a lining ring main body (7), a first connecting portion (8) above the lining ring main body (7) and a second connecting portion (9) below the lining ring main body (7), the lining ring main body (7) is pressed on the inner wall of the steel ring main body (1), the first connecting portion (8) and the mortise-tenon matching portion (6) form mortise-tenon matching, the hub cover (4) comprises a hub cover main body and a step (10), and the step (10) is matched with the second connecting portion (9) and fastened by screws.

2. The integrated alloy structure of the electric vehicle motor steel ring end cover according to claim 1, wherein the side cover (3) is made of aluminum alloy, and the lining ring (2) is made of iron.

3. The integrated alloy structure of the electric vehicle motor steel ring end cover according to claim 1, wherein the mortise and tenon matching part (6) and the first connecting part (8) have the same structure and can be matched with each other, the mortise and tenon matching part (6) and the first connecting part (8) are formed by a mortise and tenon unit circumferential array, the mortise and tenon unit comprises a splicing surface (11), a raised tenon (12) and a mortise (13) matched with the tenon (12), and the tenon (12) is in a dovetail shape.

4. The integrated alloy structure of the electric vehicle motor steel ring end cover according to claim 1, wherein a conical inclined surface is arranged above the first connecting part (8), and the inclined angle of the conical inclined surface is the same as the inclined surfaces of the mortise and tenon joint matching part (6) and the inner ring matching part (5).

5. The integrated alloy structure of the electric vehicle motor steel ring end cover according to claim 1, characterized in that a plurality of trapezoidal bosses (14) are arranged on the periphery of the step (10) in a circumferential array, threaded holes are formed in the trapezoidal bosses (14), and the threaded holes are connected with mounting screws.