CN216774411U

CN216774411U - Connecting structure of magnetic conductive ring and rim of hub motor

Info

Publication number: CN216774411U
Application number: CN202220259037.6U
Authority: CN
Inventors: 阮送良; 魏学勇; 陈玺宇
Original assignee: Taizhou Quanshun Electric Drive Technology Co ltd
Current assignee: Taizhou Quanshun Electric Drive Technology Co ltd
Priority date: 2022-01-25
Filing date: 2022-01-25
Publication date: 2022-06-17
Anticipated expiration: 2032-01-25

Abstract

The utility model provides a connecting structure of a magnetic conduction ring and a rim of a hub motor, and belongs to the technical field of hub motors. It has solved the current magnetic ring and the inconvenient problem of rim link firmly. This magnetic conduction ring sets up in the rim, and connection structure includes that one side of magnetic conduction ring is along the radial first connecting portion that sets up of the radial protrusion outwards of rim and the opposite side of magnetic conduction ring buckle inwards along the radial of rim earlier and then along the axial second connecting portion of buckling outwards of rim, and the circumference border and the rim welding of first connecting portion link firmly, and the first department of buckling and the rim welding of second connecting portion link firmly. This connection structure has the convenient advantage of making magnetic ring and rim link firmly.

Description

Connecting structure of magnetic conductive ring and rim of hub motor

Technical Field

The utility model belongs to the technical field of hub motors, and relates to a connecting structure of a magnetic conduction ring and a rim of a hub motor.

Background

The wheel hub motor technology is also called as in-wheel motor technology, and the most important characteristic of the wheel hub motor technology is that a power device, a transmission device and a braking device are all integrated into a wheel hub, so that the mechanical part of an electric vehicle is greatly simplified.

The hub motor includes a magnetic conductive ring and a rim, the magnetic conductive ring is fixedly connected in the rim, and the existing magnetic conductive ring and rim, for example, chinese patent literature document discloses a hub motor for electric vehicle [ application number: 201821657219.9, respectively; authorization notice number: CN208955763U ], which comprises a stator, a rotor and a connecting shaft, wherein the stator and the connecting shaft are circumferentially positioned, the rotor comprises a rim, a magnetic conduction ring and permanent magnets, the permanent magnets are uniformly arranged on the inner side of the magnetic conduction ring, a plurality of external tooth-shaped bosses are circumferentially distributed on the outer side of the magnetic conduction ring, the tooth-shaped tops of the external tooth-shaped bosses are fixedly connected with the inner ring of the rim, the tooth-shaped bottoms of the external tooth-shaped bosses and the inner ring of the rim form a cavity, and fixing threaded holes are formed in the end faces of two axial sides of the external tooth-shaped bosses.

According to the hub motor with the structure, the magnetic conduction ring is fixedly connected with the rim through the external tooth-shaped boss in a local welding mode. When the external tooth-shaped boss is machined, the external tooth-shaped boss is formed by turning and milling off the outer side wall of the thicker metal ring, the cavity is formed between two adjacent external tooth-shaped bosses, and the machining mode is troublesome, so that the machining of the magnetic conduction ring is inconvenient; meanwhile, when the magnetic conduction ring is fixedly connected with the rim in a welding mode, a welding wire needs to stretch into a cavity between the rim and the magnetic conduction ring for welding, the space of the cavity is small, the welding space is small, and therefore the rim and the magnetic conduction ring are inconvenient to weld and the magnetic conduction ring and the rim are inconvenient to fixedly connect.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a connecting structure of a magnetic conductive ring and a rim of a hub motor aiming at the problems in the prior art, and solves the technical problem of how to conveniently fixedly connect the magnetic conductive ring and the rim.

The purpose of the utility model can be realized by the following technical scheme: the utility model provides a connection structure of wheel hub motor magnetic ring and rim, the magnetic ring sets up in the rim, its characterized in that, connection structure include the first connecting portion that radial outside protrusion set up along the rim of one side of magnetic ring and the second connecting portion of buckling outwards along the axial of rim is buckled again earlier along radially inwards of rim to the opposite side of magnetic ring, the circumference border and the rim welding of first connecting portion link firmly, the first department of buckling and the rim welding of second connecting portion link firmly.

The magnetic conductive ring is formed by stamping and bending an annular metal ring, and is convenient to process; the first connecting part protrudes outwards, the welding seam is positioned on the outer side of the circumferential edge of the first connecting part, and the welding space is large during welding, so that the magnetic conductive ring and the rim are convenient to weld; the whole second connecting part is inwards protruded, so that the installation of the charging connector cannot be influenced, the welding of the magnetic conduction ring and the rim cannot be blocked, and the welding space is large during welding, so that the magnetic conduction ring and the rim are convenient to weld; thereby the magnetic conduction ring is convenient to be fixedly connected with the rim. The first connecting portion and the second connecting portion are located on two sides of the magnetic conduction ring and are formed by bending, so that the magnetic conduction ring is not located on the same plane, the first connecting portion and the second connecting portion not only have the function of fixedly connecting in a welding mode, but also have the function of improving the strength of the magnetic conduction ring.

In foretell connection structure of wheel hub motor magnetic ring and rim, the interval is provided with the first fixed orifices of a plurality of in the first connecting portion, the inboard of first connecting portion has linked firmly the fixed cover of a plurality of, fixed cover is located between magnetic ring and the rim, first fixed orifices and fixed cover one-to-one set up. The first fixing hole and the fixing sleeve are used for the bolt to penetrate through, and the fixing sleeve is located between the magnetic conduction ring and the rim and is not exposed.

In the above structure for connecting the magnetic conductive ring and the rim of the hub motor, the first connecting portion is fixedly connected with a plurality of fasteners at intervals, and the fastener is partially protruded out of the first connecting portion. The fastener can be a bolt, the head of the bolt is positioned between the rim and the magnetic conduction ring, the rod part of the bolt penetrates through the first connecting part and is positioned outside the first connecting part, and the bolt penetrates through the end cover and then is locked through the nut so as to be fixedly connected with the end cover.

In the above structure for connecting the magnetic conductive ring and the rim of the hub motor, the number of the first fixing holes is 8-16.

In foretell connection structure of wheel hub motor magnetic ring and rim, the magnetic ring is including being annular main part and being annular fixed part, the main part is located between first connecting portion and the second connecting portion, just first connecting portion, second connecting portion and main part formula structure as an organic whole, the fixed part links firmly in the circumference outside of second connecting portion, be equipped with a plurality of second fixed orifices along the axial of rim between fixed part and the second connecting portion. According to the structure, the magnetic conduction ring can be correspondingly thinner, the weight and the cost of the magnetic conduction ring are reduced, the problem that the thickness of the part, provided with the second fixing hole, of the magnetic conduction ring is not enough is solved through the fixing part, and the arrangement of the fixing part ensures that the magnetic conduction ring has enough strength at the part.

In the above-mentioned connection structure of wheel hub motor magnetic ring and rim, the lateral wall of fixed part along the radial relative main part lateral wall indentation setting of rim. The structure ensures that the welding of the magnetic conduction ring and the rim can not be influenced by the arrangement of the fixing part, and ensures that the magnetic conduction ring and the rim are fixedly connected conveniently.

In the above structure for connecting the magnetic conductive ring and the rim of the hub motor, the fixing portion is attached to the step surface formed by bending the second connecting portion. The structure improves the installation firmness degree of the fixing part, thereby improving the connection strength of the magnetic conduction ring.

In the above-mentioned connection structure of wheel hub motor magnetic ring and rim, the circumference lateral wall of main part is laminated with the circumference inside wall of rim mutually. The magnetic conduction ring and the hub are integrated into a whole, so that the strength is high, and the strength of the hub motor is improved.

As another aspect, in the above connection structure between the magnetic conductive ring and the rim of the hub motor, the second connection portion is provided with a plurality of second fixing holes along the axial direction of the rim. When the magnetic conduction ring is thick enough, a second fixing hole can be directly formed in the second connecting part.

In the above structure for connecting the magnetic conductive ring and the rim of the hub motor, the number of the second fixing holes is 8-16.

Compared with the prior art, the connecting structure of the magnetic conductive ring and the rim of the hub motor provided by the utility model has the following advantages:

1. this connection structure's magnetic ring passes through the metal ring punching press shaping of bending, and processing is convenient, and first connecting portion and second connecting portion are big with rim welding department's welding space, make magnetic ring and rim welding convenient to it is convenient to make magnetic ring and rim link firmly.

2. The first connecting portion and the second connecting portion of the connecting structure are formed by bending, so that the magnetic conduction rings are not located on the same plane, the first connecting portion and the second connecting portion not only have the function of fixedly connecting in a welding mode, but also have the function of improving the strength of the magnetic conduction rings.

Drawings

Fig. 1 is a state diagram of the whole structure of the magnetic conductive ring after the magnetic conductive ring is fixedly connected with a rim.

Fig. 2 is a state diagram of the whole structure of the magnetic conductive ring after the magnetic conductive ring is fixedly connected with the rim.

Fig. 3 is a state diagram after the magnetic conductive ring is fixedly connected.

Fig. 4 is a cross-sectional view of the magnetic conductive ring and the rim after being fixedly connected.

In the figure, 1, a magnetic conductive ring; 11. a first connection portion; 111. a first fixing hole; 12. a second connecting portion; 13. a main body; 14. a fixed part; 15. a second fixing hole; 16. a step surface; 2. a rim; 3. and (4) fixing sleeves.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

Example one

As shown in fig. 1 and 2, the in-wheel motor includes a magnetic conductive ring 1 and a rim 2, the magnetic conductive ring 1 is disposed in the rim 2, the magnetic conductive ring 1 includes a first connecting portion 11, a second connecting portion 12, a main body 13 and a fixing portion 14, the first connecting portion 11, the second connecting portion 12, the main body 13 and the fixing portion 14 are all annular, the main body 13 is located between the first connecting portion 11 and the second connecting portion 12, the first connecting portion 11, the second connecting portion 12 and the main body 13 are of an integral structure, and the connecting structure of the magnetic conductive ring 1 and the rim 2 includes the first connecting portion 11 and the second connecting portion 12.

In this embodiment, interval is provided with twelve first fixed orificess 111 in the first connecting portion 11, the inboard of first connecting portion 11 has linked firmly twelve fixed cover 3, fixed cover 3 is located between magnetic ring 1 and rim 2, first fixed orificess 111 and fixed cover 3 one-to-one set up, first fixed orificess 111 and fixed cover 3 supply the bolt to wear to establish fixedly, in actual production, the quantity of first fixed orificess 111 can be eight or sixteen, also can interval link firmly twelve fasteners such as bolt on the first connecting portion 11, the partial protrusion of fastener sets up outside first connecting portion 11.

One side of magnetic ring 1 sets up along the radial protrusion outwards of rim 2 and forms first connecting portion 11, and the opposite side of magnetic ring 1 is bent inwards along the radial of rim 2 earlier and is bent outwards along the axial of rim 2 again and form second connecting portion 12, and the circumference border of first connecting portion 11 links firmly with rim 2 welding, and the first department of buckling and rim 2 welding of second connecting portion 12 link firmly.

As shown in fig. 3 and 4, the fixing portion 14 is fixedly connected to the circumferential outer side of the second connecting portion 12, the outer side wall of the fixing portion 14 is set in a retracted manner along the radial direction of the rim 2 relative to the outer side wall of the main body 13, the fixing portion 14 abuts against a step surface 16 formed by bending the second connecting portion 12, and the circumferential outer side wall of the main body 13 abuts against the circumferential inner side wall of the rim 2. In the present embodiment, twelve second fixing holes 15 are provided between the fixing portion 14 and the second connecting portion 12 in the axial direction of the rim 2, and in actual production, the number of the second fixing holes 15 may be eight or sixteen.

During welding, the magnetic ring 1 is placed in the rim 2, the first connecting portion 11 and the rim 2 are welded through the welding gun, the second connecting portion 12 and the rim 2 are welded through the welding gun, and therefore the fixed connection of the magnetic ring 1 and the rim 2 can be completed.

Example two

The present embodiment is basically the same in structure and principle as the first embodiment, except that the second connecting portion 12 is provided with twelve second fixing holes 15 in the axial direction of the rim 2.

The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Although the terms of the flux ring 1, the first connecting portion 11, the first fixing hole 111, the second connecting portion 12, the main body 13, the fixing portion 14, the second fixing hole 15, the step surface 16, the rim 2, the fixing sleeve 3, etc. are used more 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 as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims

1. The utility model provides a connection structure of wheel hub motor magnetic ring and rim, magnetic ring (1) sets up in rim (2), its characterized in that, connection structure include first connecting portion (11) that radial outside protrusion set up along rim (2) and radial inside out of one side of magnetic ring (1) set up and second connecting portion (12) of buckling outside along the axial of rim (2) are followed earlier along rim (2) to the opposite side of magnetic ring (1), the circumference border of first connecting portion (11) links firmly with rim (2) welding, the department of buckling for the first time of second connecting portion (12) links firmly with rim (2) welding.

2. The connecting structure of the magnetic conductive ring and the rim of the hub motor according to claim 1, wherein a plurality of first fixing holes (111) are formed in the first connecting portion (11) at intervals, a plurality of fixing sleeves (3) are fixedly connected to the inner side of the first connecting portion (11), the fixing sleeves (3) are located between the magnetic conductive ring (1) and the rim (2), and the first fixing holes (111) and the fixing sleeves (3) are arranged in a one-to-one correspondence manner.

3. A connection structure of a magnetic conductive ring and a rim of an in-wheel motor according to claim 1, wherein the first connection portion (11) is fixedly connected with a plurality of fasteners at intervals, and the fastener is partially arranged outside the first connection portion (11) in a protruding manner.

4. The connecting structure of the magnetic conductive ring and the rim of the hub motor according to claim 2, wherein the number of the first fixing holes (111) is 8-16.

5. A connection structure of in-wheel motor magnetic ring and rim according to claim 1 or 2 or 3 or 4, characterized in that, magnetic ring (1) is including being annular main part (13) and being annular fixed part (14), main part (13) are located between first connecting portion (11) and second connecting portion (12), just first connecting portion (11), second connecting portion (12) and main part (13) formula structure as an organic whole, fixed part (14) link firmly in the circumference outside of second connecting portion (12), be equipped with a plurality of second fixed orifices (15) along the axial of rim (2) between fixed part (14) and second connecting portion (12).

6. A connection structure of a magnetic conduction ring and a rim of an in-wheel motor according to claim 5, characterized in that the outer side wall of the fixing part (14) is arranged in a retracted mode relative to the outer side wall of the main body (13) along the radial direction of the rim (2).

7. A connection structure of a magnetic conduction ring and a rim of an in-wheel motor according to claim 5, characterized in that the fixing portion (14) is abutted on a step surface (16) formed by bending the second connecting portion (12).

8. A connection structure of a magnetic conduction ring and a rim of an in-wheel motor according to claim 5, characterized in that the circumferential outer side wall of the main body (13) is attached to the circumferential inner side wall of the rim (2).

9. A connection structure of a magnetic conductive ring and a rim of an in-wheel motor according to claim 1, 2, 3 or 4, characterized in that the second connection part (12) is provided with a plurality of second fixing holes (15) along the axial direction of the rim (2).

10. A connection structure of a magnetic conduction ring and a rim of an in-wheel motor according to claim 5, characterized in that the number of the second fixing holes (15) is 8-16.