CN220291780U - Brushless motor with double-step structure - Google Patents
Brushless motor with double-step structure Download PDFInfo
- Publication number
- CN220291780U CN220291780U CN202321849415.7U CN202321849415U CN220291780U CN 220291780 U CN220291780 U CN 220291780U CN 202321849415 U CN202321849415 U CN 202321849415U CN 220291780 U CN220291780 U CN 220291780U
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- Prior art keywords
- end cover
- motor
- shell
- housing
- rotor
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Links
- 238000007789 sealing Methods 0.000 claims abstract description 23
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 8
- 239000004917 carbon fiber Substances 0.000 claims description 8
- 229910001172 neodymium magnet Inorganic materials 0.000 description 5
- 229910000976 Electrical steel Inorganic materials 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 238000007792 addition Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Motor Or Generator Frames (AREA)
Abstract
The utility model relates to a brushless motor with a double-step structure, and belongs to the field of surfboards. The utility model comprises a motor shell, motor end covers, a stator, a rotor and a motor shaft, wherein the two ends of the motor shell are respectively provided with one motor end cover, the stator is arranged in the motor shell, the motor shaft is arranged on the rotor, and the rotor is matched with the stator, and the motor is structurally characterized in that: still include first shell step, second shell step, first end cover step and second end cover step, first shell step and second shell step all set up on motor housing, first end cover step and second end cover step all set up on motor end cover, first shell step cooperates with first end cover step, second shell step cooperates with second end cover step. The first shell step, the second shell step, the first end cover step and the second end cover step are arranged, so that the sealing ring can be conveniently installed, and the sealing ring is prevented from being scratched.
Description
Technical Field
The utility model relates to a brushless motor with a double-step structure, and belongs to the field of surfboards.
Background
The brushless motor is used for providing power for the surfing board, the brushless motor shell and the end cover in the prior art are often installed by adopting a single-step structure, when the single-step structure is adopted for installation, the sealing ring is fixed on a step, when the motor end cover is installed into the motor shell, a first screw hole arranged on the motor shell can scratch the lip of the sealing ring, so that the sealing is invalid (because the inside of the fixed screw hole of the motor shell is difficult to chamfer due to the problem of the production process, sharp corners are formed); meanwhile, as the reinforcing structure is not arranged on the outer side of the rotor of the brushless motor in the prior art, when the rotor rotates at a high speed, centrifugal force is generated, so that the neodymium magnet is separated from the silicon steel sheet of the rotor, and the motor is blocked.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provide the brushless motor with the double-step structure, which is reasonable in structural design.
The utility model solves the problems by adopting the following technical scheme: this brushless motor with two step structure, including motor housing, motor end cover, stator, rotor and motor shaft, motor housing's both ends respectively are provided with a motor end cover, the stator sets up in motor housing, the motor shaft sets up on the rotor, rotor and stator cooperation, its structural feature lies in: still include first shell step, second shell step, first end cover step and second end cover step, first shell step and second shell step all set up on motor housing, first end cover step and second end cover step all set up on motor end cover, first shell step cooperates with first end cover step, second shell step cooperates with second end cover step. The first shell step, the second shell step, the first end cover step and the second end cover step are arranged, so that the sealing ring can be conveniently installed, and the sealing ring is prevented from being scratched.
Further, a sealing groove is formed in the first end cover step, and a sealing ring is arranged in the sealing groove and is in contact with the first shell step.
Further, a first screw hole is formed in the second housing step, a second screw hole is formed in the second end cover step, and the first screw hole is matched with the second screw hole. When the first screw hole is overlapped with the second screw hole, the motor shell and the motor end cover can be locked.
Further, the first housing step has an inner diameter smaller than an inner diameter of the second housing step, and the first end cap step has an outer diameter smaller than an outer diameter of the second end cap step. The first housing step and the first end cover step form a first step structure, and the second housing step and the second end cover step form a second step structure.
Further, carbon fibers are wound outside the rotor. The separation of the neodymium magnet on the rotor from the silicon steel sheet can be avoided.
Compared with the prior art, the utility model has the following advantages: the application adopts the double-step structure, the first step structure comprises a first shell step and a first end cover step, the second step structure comprises a second shell step and a second end cover step, the sealing ring is arranged at the first step structure, the first screw hole is arranged in the second step structure, and when the motor end cover is installed in the motor shell, the height of the sealing ring on the first step structure is lower than that of the first screw hole on the second step structure, so that the sealing ring can be prevented from being scratched; the outside of the rotor is reinforced by winding carbon fiber, so that the neodymium magnet can be prevented from being separated from the silicon steel sheet due to centrifugal force generated by high-speed rotation of the rotor.
Drawings
Fig. 1 is an exploded view of a brushless motor having a double step structure according to an embodiment of the present utility model.
Fig. 2 is a schematic cross-sectional structure of a brushless motor having a double step structure according to an embodiment of the present utility model.
Fig. 3 is an enlarged schematic view of the portion a in fig. 2.
Fig. 4 is a schematic perspective view of a brushless motor having a double step structure according to an embodiment of the present utility model.
In the figure: the motor comprises a motor shell 1, a motor end cover 2, a stator 3, a rotor 4, a motor shaft 5, a first shell step 6, a second shell step 7, a first end cover step 8, a second end cover step 9, a sealing groove 10, a sealing ring 11, a first screw hole 12, a second screw hole 13 and carbon fibers 14.
Detailed Description
The present utility model will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present utility model and not limited to the following examples.
Examples
Referring to fig. 1 to 4, it should be understood that the structures, proportions, sizes, etc. shown in the drawings attached to the present specification are shown only for the purpose of understanding and reading by those skilled in the art, and are not intended to limit the applicable limitations of the present utility model, so that any structural modification, change in proportion, or adjustment of size does not have any technical significance, and all fall within the scope of the technical content of the present utility model without affecting the efficacy and achievement of the present utility model. In the meantime, if the terms such as "upper", "lower", "left", "right", "middle" and "a" are used in the present specification, they are merely for convenience of description, but are not intended to limit the scope of the present utility model, and the relative relation changes or modifications are considered to be within the scope of the present utility model without substantial modification of the technical content.
The brushless motor with the double-step structure in the embodiment comprises a motor housing 1, a motor end cover 2, a stator 3, a rotor 4, a motor shaft 5, a first housing step 6, a second housing step 7, a first end cover step 8 and a second end cover step 9, wherein the motor end cover 2 is respectively arranged at two ends of the motor housing 1, the stator 3 is arranged in the motor housing 1, the motor shaft 5 is arranged on the rotor 4, the rotor 4 is matched with the stator 3, and carbon fibers 14 are wound outside the rotor 4.
The first housing step 6 and the second housing step 7 in this embodiment are both disposed on the motor housing 1, the first end cover step 8 and the second end cover step 9 are both disposed on the motor end cover 2, the first housing step 6 is matched with the first end cover step 8, the second housing step 7 is matched with the second end cover step 9, a seal groove 10 is disposed on the first end cover step 8, a seal ring 11 is disposed in the seal groove 10, and the seal ring 11 is in contact with the first housing step 6.
The second housing step 7 in this embodiment is provided with a first screw hole 12, the second end cap step 9 is provided with a second screw hole 13, the first screw hole 12 is matched with the second screw hole 13, the inner diameter of the first housing step 6 is smaller than the inner diameter of the second housing step 7, and the outer diameter of the first end cap step 8 is smaller than the outer diameter of the second end cap step 9.
Specifically, the brushless motor is provided with a double-step structure, namely a first step structure and a second step structure between the motor housing 1 and the motor end cover 2, wherein the first step structure is composed of a first housing step 6 and a first end cover step 8, and the second step structure is composed of a second housing step 7 and a second end cover step 9.
Wherein sealing washer 11 sets up in the seal groove 10 of first end cover step 8, first screw hole 12 is in second end cover step 9, when installing motor end cover 2 to motor housing 1, because the internal diameter of first shell step 6 is less than the internal diameter of second shell step 7, the external diameter of first end cover step 8 is less than the external diameter of second end cover step 9, consequently can make the height of sealing washer 11 be less than first screw hole 12, consequently avoided scraping sealing washer 11, if no double-step structure sets up because first screw hole 12 can exist sharp right angle in the course of working, can lead to sealed inefficacy, can fix motor end cover 2 and motor housing 1 through first screw hole 12, second screw hole 13.
The rotor 4 is wound and reinforced by the carbon fiber 14, so that the phenomenon that the neodymium magnet is separated from the silicon steel sheet to cause the motor to be blocked when the carbon fiber 14 rotates at a high speed to generate centrifugal force can be avoided, and therefore, the carbon fiber 14 reinforcing material is required to be tightly wound outside the neodymium magnet.
In addition, it should be noted that the specific embodiments described in the present specification may vary from part to part, from name to name, etc., and the above description in the present specification is merely illustrative of the structure of the present utility model. All equivalent or simple changes of the structure, characteristics and principle according to the inventive concept are included in the protection scope of the present patent. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions in a similar manner without departing from the scope of the utility model as defined in the accompanying claims.
Claims (5)
1. The utility model provides a brushless motor with two step structure, includes motor housing (1), motor end cover (2), stator (3), rotor (4) and motor shaft (5), the both ends of motor housing (1) respectively are provided with motor end cover (2), stator (3) set up in motor housing (1), motor shaft (5) set up on rotor (4), rotor (4) and stator (3) cooperation, its characterized in that: still include first shell step (6), second shell step (7), first end cover step (8) and second end cover step (9), first shell step (6) and second shell step (7) all set up on motor housing (1), first end cover step (8) and second end cover step (9) all set up on motor end cover (2), first shell step (6) cooperates with first end cover step (8), second shell step (7) cooperates with second end cover step (9).
2. A brushless motor having a double step structure according to claim 1, wherein: the sealing device is characterized in that a sealing groove (10) is formed in the first end cover step (8), a sealing ring (11) is arranged in the sealing groove (10), and the sealing ring (11) is in contact with the first shell step (6).
3. A brushless motor having a double step structure according to claim 1, wherein: the novel portable electronic device is characterized in that a first screw hole (12) is formed in the second housing step (7), a second screw hole (13) is formed in the second end cover step (9), and the first screw hole (12) is matched with the second screw hole (13).
4. A brushless motor having a double step structure according to claim 1, wherein: the inner diameter of the first housing step (6) is smaller than the inner diameter of the second housing step (7), and the outer diameter of the first end cover step (8) is smaller than the outer diameter of the second end cover step (9).
5. A brushless motor having a double step structure according to claim 1, wherein: carbon fibers (14) are wound outside the rotor (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321849415.7U CN220291780U (en) | 2023-07-13 | 2023-07-13 | Brushless motor with double-step structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321849415.7U CN220291780U (en) | 2023-07-13 | 2023-07-13 | Brushless motor with double-step structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220291780U true CN220291780U (en) | 2024-01-02 |
Family
ID=89338958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321849415.7U Active CN220291780U (en) | 2023-07-13 | 2023-07-13 | Brushless motor with double-step structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220291780U (en) |
-
2023
- 2023-07-13 CN CN202321849415.7U patent/CN220291780U/en active Active
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