CN215681949U - Stator fixed knot constructs and in-wheel motor and electric motorcycle car - Google Patents
Stator fixed knot constructs and in-wheel motor and electric motorcycle car Download PDFInfo
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- CN215681949U CN215681949U CN202121277415.5U CN202121277415U CN215681949U CN 215681949 U CN215681949 U CN 215681949U CN 202121277415 U CN202121277415 U CN 202121277415U CN 215681949 U CN215681949 U CN 215681949U
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Abstract
The utility model discloses a stator fixing structure, a hub motor and an electric motorcycle, wherein the stator fixing structure comprises a stator component, a fixing shaft, a first fixing ring and a second fixing ring; the stator assembly is a multilayer PCB integrated with a plurality of windings, and the center of the stator assembly is provided with at least one fixing hole with a straight edge section; the fixed shaft penetrates through the fixed hole; the first fixing ring is provided with at least one axial plane section, and the axial plane section is matched with the straight edge section; the first fixing ring and the second fixing ring respectively penetrate through and are fixed on the fixing shaft; the first fixing ring and the second fixing ring are positioned on two sides of the fixing hole of the stator assembly and clamp the stator assembly. The stator component of the stator fixing structure is fixed on the fixing ring of the fixing shaft, and the fixing shaft is simple in structure, easy to process and low in cost; the two sides of the stator assembly are positioned by the fixing rings, so that the positioning is stable and firm, and the automatic assembly of the product is facilitated; the hub motor with the stator fixing structure and the electric motorcycle have stable operation, and the battery of the electric motorcycle is more durable.
Description
Technical Field
The utility model relates to the technical field of motors, in particular to a stator fixing structure, a hub motor and an electric motorcycle.
Background
In the prior art, the fixing structure of the PCB disc type motor stator and the fixing shaft is that the stator is directly fixed on the fixing shaft, so that the processing difficulty of the fixing shaft is increased, and the processing cost is high. The axial positioning of the stator on two sides of the fixed shaft is realized by the clamp spring or the positioning piece welded on the fixed shaft, and the positioning is unstable and infirm by using the clamp spring; the positioning accuracy of the welding positioning piece is low, the operation is inconvenient, and the two positioning modes are not suitable for automatic assembly.
Therefore, there is a need to solve the above technical problems.
Disclosure of Invention
The utility model provides a stator fixing structure, a hub motor and an electric motorcycle, aiming at the technical problems, the stator component of the stator fixing structure is fixed on the fixing ring of the fixing shaft, and the fixing shaft has simple structure, easy processing and low cost; the two sides of the stator assembly are positioned by the fixing rings, so that the positioning is stable and firm, and the automatic assembly of the product is facilitated; the hub motor and the electric motorcycle with the stator fixing structure are stable in operation and high in reliability.
In order to achieve the purpose, the technical scheme of the utility model is as follows:
a stator fixing structure comprising:
the stator assembly is a multilayer PCB integrated with a plurality of windings, and the center of the stator assembly is provided with a fixing hole which is provided with at least one straight edge section;
a fixing shaft passing through a fixing hole of the stator assembly;
a first retaining ring having at least one axial planar segment that mates with a straight edge segment of the retaining hole; the first fixing ring penetrates through and is fixed on the fixing shaft;
the second fixed ring penetrates through and is fixed on the fixed shaft;
the first fixing ring and the second fixing ring are positioned on two sides of the fixing hole of the stator assembly and clamp the stator assembly.
The stator component of the stator fixing structure is fixed on the first fixing ring of the fixing shaft, and the fixing shaft is simple in structure, easy to process and low in cost; stator module both sides adopt the solid fixed ring location of first solid fixed ring and second, and the location is stable firm, makes things convenient for the automatic assembly of product.
The stator fixing structure further comprises a flat key, and the first fixing ring, the second fixing ring and the fixing shaft are connected through the flat key. Through the effect of flat key side, first solid fixed ring and second have good rotation direction's rigid connection between solid fixed ring and the fixed axle, have guaranteed the stable quiescent condition of stator module.
The shape of the fixing hole of the stator assembly is a polygon; the first fixing ring is provided with a polygonal axial plane section which is matched with the polygonal fixing hole. The polygonal fixing hole is matched with the axial plane section to ensure more contact surfaces between the polygonal fixing hole and the axial plane section in the rotating direction, and the rigid connection in the rotating direction is firmer and more reliable.
The shape of the fixing hole of the stator assembly is square or regular hexagon; the first retaining ring has a square or regular hexagonal axial flat section. The square or regular hexagonal fixing hole and the axial plane section are easier to process.
Furthermore, one end of the fixed shaft is provided with a through hole communicated to the wiring end of the stator assembly. The through hole on the fixed shaft is used for leading wires, and external wires are connected to the terminal of the stator assembly through the through hole, so that the winding or rotating situation can not occur.
An in-wheel motor comprising:
any one of the above stator fixing structures;
the rotor assembly is provided with a first permanent magnet and a second permanent magnet, and the first permanent magnet and the second permanent magnet are respectively positioned at two sides of the stator assembly;
the shell is provided with a cavity, the stator assembly and the rotor assembly are accommodated in the cavity, and two inner sides of the cavity are respectively and fixedly connected with the first permanent magnet and the second permanent magnet;
the two sides of the fixed shaft extend through the rotor assembly and the shell, and the rotor assembly drives the shell to rotate on the fixed shaft.
The hub motor adopting the stator fixing structure is stable in operation and high in reliability.
The shell further comprises a first outer cover, a middle shell and a second outer cover, wherein the first outer cover and the second outer cover are respectively fixed at two ends of the middle shell; the first permanent magnet is fixed on the inner side of the first outer cover, and the second permanent magnet is fixed on the inner side of the second outer cover;
a first bearing is arranged between the first outer cover and the fixing shaft, and a second bearing is arranged between the second outer cover and the fixing shaft.
The shell is of a split structure, so that the production, the manufacture and the installation are convenient.
Further the rotor subassembly still includes first mounting and second mounting, first mounting fixed connection in between first enclosing cover and the first permanent magnetism magnet, second mounting fixed connection in between second enclosing cover and the second permanent magnetism magnet. The rotor subassembly sets up first magnet of the more convenient fixed of first mounting and second magnet.
An electric motorcycle comprises the hub motor. This electric motorcycle car's in-wheel motor operation is stable, and the reliability is high, consequently has good experience of riding.
Compared with the prior art, the utility model has the following technical advantages:
1. the stator component of the stator fixing structure is fixed on the first fixing ring of the fixing shaft, so that the fixing shaft is simple in structure, easy to process and low in cost; the two sides of the stator assembly are positioned by the first fixing ring and the second fixing ring, so that the positioning is stable and firm, and the automatic assembly of a product is facilitated;
2. the hub motor adopting the stator fixing structure has stable operation and high reliability; the stator assembly of the hub motor is in a structure that windings are integrated on a PCB, compared with the traditional motor, the winding structure is compact and delicate, and has no iron core, small volume and light weight, magnetic loss and heat loss caused by eddy current generated in the traditional electric winding are avoided, and energy loss is low;
3. adopt above-mentioned in-wheel motor's electric motorcycle car to have good experience of riding, because this in-wheel motor energy consumption is few, this electric motorcycle car's battery is more durable, and the distance of riding is farther after the single charges.
Drawings
Fig. 1 is an exploded view of an embodiment of a stator fixing structure of the present invention;
FIG. 2 is an assembled view of FIG. 1;
FIG. 3 is a front cross-sectional view of FIG. 2;
FIG. 4 is a perspective view of the stator assembly of FIG. 1;
FIG. 5 is a perspective view of the first retaining ring of FIG. 1;
FIG. 6 is a perspective view of the second retaining ring of FIG. 1;
FIG. 7 is a cross-sectional view of an in-wheel motor embodiment of the present invention;
fig. 8 is an exploded view of fig. 7.
Detailed Description
The utility model will be described in further detail below with reference to embodiments shown in the drawings.
As shown in fig. 1 to 6, a stator fixing structure of an embodiment of the present invention is provided.
As shown in fig. 1, the stator fixing structure 10 includes a stator assembly 11, a fixed shaft 12, a first fixing ring 13, and a second fixing ring 14.
As shown in fig. 4, the stator assembly 11 is a multi-layer PCB integrated with several windings, and has a fixing hole 111 in the center, the fixing hole has at least one straight section 112, and the shape of the fixing hole 111 is regular hexagon.
As shown in fig. 1, the stationary shaft 12 passes through the fixing hole 111 of the stator assembly 11.
As shown in fig. 1 and 5, the first fixing ring 13 has a regular hexagonal axial plane section 131, and the axial plane section 131 is engaged with the fixing hole 111; the first fixing ring 13 is passed through and fixed to the fixing shaft 12.
As shown in fig. 1 and 6, the second fixing ring 14 is fixed to the fixing shaft 12 through the second fixing ring.
As shown in fig. 2, the first stationary ring 13 and the second stationary ring 14 are positioned at both sides of the stationary hole 111 of the stator assembly 11 and sandwich the stator assembly 11.
As shown in FIG. 1, the stationary shaft 12 has two sets of shaft threaded holes 122 that are radially symmetrically disposed. As shown in fig. 5, the first fixing ring 13 has a radially symmetrical set of first fixing ring threaded holes 132. As shown in fig. 6, the second fixing ring 14 has a radially symmetrical set of second fixing ring threaded holes 141.
As shown in fig. 1 and 2, the first fixing ring 13 is fixed to the fixing shaft 12 by screwing the first fixing ring screw hole 132 and one of the set of shaft screw holes 122; the second screw-coupling retaining ring threaded holes 141 and the other set of shaft threaded holes 122 positionally fix the second retaining ring 14 to the stationary shaft 12.
As a similar embodiment, the fixing hole 111 of the stator assembly 11 may also be square or regular octagon in shape; the first retaining ring 13 has a square or regular octagonal axial plane section 131 fitted thereto. The regular polygonal fixing holes are matched with the axial plane sections to ensure that more contact surfaces are formed between the regular polygonal fixing holes and the axial plane sections in the rotating direction, and the rigid connection in the rotating direction is firmer and more reliable; and regular polygon fixing holes and axial plane sections are easier to process.
The stator component of the stator fixing structure is fixed on the first fixing ring of the fixing shaft, and the fixing shaft is simple in structure, easy to process and low in cost; stator module both sides adopt the solid fixed ring location of first solid fixed ring and second, and the location is stable firm, makes things convenient for the automatic assembly of product.
As shown in fig. 1, the stator fixing structure 10 further includes a flat key 15, and the fixing shaft 12 has a key groove. As shown in fig. 5 and 6, the first fixing ring 13 and the second fixing ring 14 have key grooves therein. The flat key 15 is fitted into the keyways of the first fixed ring 13, the second fixed ring 14, and the fixed shaft 12. The first fixing ring 13, the second fixing ring 14 and the fixing shaft 12 are connected by a flat key 15. Through the effect of flat key side, first solid fixed ring and second have good rotation direction's rigid connection between solid fixed ring and the fixed axle, have guaranteed the stable quiescent condition of stator module.
As shown in fig. 3, one end of the stationary shaft 12 has a through hole 121 communicating to a terminal of the stator assembly 11. The through hole on the fixed shaft is used for leading wires, and external wires are connected to the terminal of the stator assembly through the through hole, so that the winding or rotating situation can not occur.
As shown in fig. 7 and 8, the hub motor according to the embodiment of the present invention includes the stator fixing structure 10, the rotor assembly 20, and the housing 30 of fig. 2.
As shown in fig. 7 and 8, the rotor assembly 20 has a first permanent magnet 21 and a second permanent magnet 22, and the first permanent magnet 21 and the second permanent magnet 22 are respectively located at two sides of the stator assembly 11.
As shown in fig. 7 and 8, the housing 30 has a cavity, in which the stator assembly 11 and the rotor assembly 20 are accommodated, and two inner sides of the cavity are fixedly connected to the first permanent magnet 21 and the second permanent magnet 22, respectively.
As shown in fig. 7, the stationary shaft 12 extends laterally through the rotor assembly 20 and the housing 30, and the rotor assembly 20 rotates the housing 30 on the stationary shaft 12.
As shown in fig. 7 and 8, the casing 30 includes a first outer cover 31, a middle case 32 and a second outer cover 33, and the first outer cover 31 and the second outer cover 33 are respectively fixed at both ends of the middle case 32; the first permanent magnet 21 is fixed inside the first cover 31, and the second permanent magnet 22 is fixed inside the second cover 33.
As shown in fig. 7, a first bearing 40 is provided between the first cover 31 and the stationary shaft 12, and a second bearing 50 is provided between the second cover 33 and the stationary shaft 12.
The shell is of a split structure, so that the production, the manufacture and the installation are convenient.
As shown in fig. 7 and 8, the rotor assembly 20 further includes a first fixing member 23 and a second fixing member 24, the first fixing member 23 is fixedly connected between the first outer cover 31 and the first permanent magnet 21, and the second fixing member 24 is fixedly connected between the second outer cover 33 and the second permanent magnet 22. The rotor subassembly sets up first magnet of the more convenient fixed of first mounting and second magnet.
The hub motor adopting the stator fixing structure is stable in operation and high in reliability.
The utility model also discloses an electric motorcycle which comprises the hub motor. This electric motorcycle car's in-wheel motor operation is stable, and the reliability is high, consequently has good experience of riding. The stator assembly of the hub motor is in a structure that windings are integrated on a PCB, compared with the traditional motor, the winding structure is compact and delicate, and has no iron core, small volume and light weight, magnetic loss and heat loss caused by eddy current generated in the traditional electric winding are avoided, and energy loss is low; therefore, the battery of the electric motorcycle is more durable, and the riding distance is longer after single charging.
The above-mentioned embodiments are merely provided for convenience of illustration of the present invention and are not intended to be limiting in form; those skilled in the art should understand that they can easily make various changes and modifications to the disclosed embodiments without departing from the scope of the present invention.
Claims (10)
1. A stator fixing structure characterized by comprising:
the stator assembly is a multilayer PCB integrated with a plurality of windings, and the center of the stator assembly is provided with a fixing hole which is provided with at least one straight edge section;
a fixing shaft passing through a fixing hole of the stator assembly;
a first retaining ring having at least one axial planar segment that mates with a straight edge segment of the retaining hole; the first fixing ring penetrates through and is fixed on the fixing shaft;
the second fixed ring penetrates through and is fixed on the fixed shaft;
the first fixing ring and the second fixing ring are positioned on two sides of the fixing hole of the stator assembly and clamp the stator assembly.
2. The stator fixing structure according to claim 1, further comprising a flat key, wherein the first fixing ring, the second fixing ring and the fixing shaft are connected by the flat key.
3. The stator fixing structure according to claim 1, wherein the fixing hole of the stator assembly is polygonal in shape; the first fixing ring is provided with a polygonal axial plane section which is matched with the polygonal fixing hole.
4. The stator fixing structure according to claim 3, wherein the fixing hole of the stator assembly is square or regular hexagonal in shape; the first retaining ring has a square or regular hexagonal axial flat section.
5. The stator fixing structure as claimed in claim 1, wherein one end of the fixing shaft has a through hole communicating with a terminal of the stator assembly.
6. An in-wheel motor, comprising:
the stator fixing structure of any one of claims 1 to 5;
the rotor assembly is provided with a first permanent magnet and a second permanent magnet, and the first permanent magnet and the second permanent magnet are respectively positioned at two sides of the stator assembly;
the shell is provided with a cavity, the stator assembly and the rotor assembly are accommodated in the cavity, and two inner sides of the cavity are respectively and fixedly connected with the first permanent magnet and the second permanent magnet;
the two sides of the fixed shaft extend through the rotor assembly and the shell, and the rotor assembly drives the shell to rotate on the fixed shaft.
7. The in-wheel motor according to claim 6, wherein the housing comprises a first outer cover, a middle housing and a second outer cover, the first outer cover and the second outer cover are respectively fixed at two ends of the middle housing; the first permanent magnet is fixed on the inner side of the first outer cover, and the second permanent magnet is fixed on the inner side of the second outer cover;
a first bearing is arranged between the first outer cover and the fixing shaft, and a second bearing is arranged between the second outer cover and the fixing shaft.
8. The in-wheel motor as claimed in claim 7, wherein the rotor assembly further comprises a first fixing member fixedly coupled between the first outer cover and the first permanent magnet and a second fixing member fixedly coupled between the second outer cover and the second permanent magnet.
9. An electric motorcycle characterized by comprising the in-wheel motor of claim 7.
10. An electric motorcycle characterized by comprising the in-wheel motor of claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121277415.5U CN215681949U (en) | 2021-06-08 | 2021-06-08 | Stator fixed knot constructs and in-wheel motor and electric motorcycle car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121277415.5U CN215681949U (en) | 2021-06-08 | 2021-06-08 | Stator fixed knot constructs and in-wheel motor and electric motorcycle car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215681949U true CN215681949U (en) | 2022-01-28 |
Family
ID=79974495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121277415.5U Active CN215681949U (en) | 2021-06-08 | 2021-06-08 | Stator fixed knot constructs and in-wheel motor and electric motorcycle car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215681949U (en) |
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2021
- 2021-06-08 CN CN202121277415.5U patent/CN215681949U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |