CN217935406U - Brushless motor - Google Patents
Brushless motor Download PDFInfo
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- CN217935406U CN217935406U CN202221913998.0U CN202221913998U CN217935406U CN 217935406 U CN217935406 U CN 217935406U CN 202221913998 U CN202221913998 U CN 202221913998U CN 217935406 U CN217935406 U CN 217935406U
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- lower cover
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Abstract
The utility model discloses a brushless motor relates to electric brushless motor technical field. A brushless motor includes: the device comprises a shell, an upper cover body, a lower cover body, a rotor assembly, a stator assembly and an elastic piece; the upper cover body and the lower cover body are clamped with the upper end and the lower end of the shell respectively, the rotor assembly is arranged in an inner cavity of the shell and is connected with the upper cover body and the lower cover body in a rotating mode respectively, two ends of the stator assembly are clamped with the upper cover body and the lower cover body respectively and surround the periphery of the rotor assembly, and the elastic piece is arranged between the upper cover body and the rotor assembly and/or between the lower cover body and the rotor assembly. Therefore, the problem that the fan connected with the motor shaft is easy to damage due to strong vibration generated when the existing gas nail shooter works is solved; the problem that the service life of the motor is reduced due to the fact that the carbon brush and the commutator inside the motor are prone to failure.
Description
Technical Field
The utility model relates to a brushless motor technical field especially relates to a brushless motor.
Background
At present, motors applied to a gas nail shooter are usually brush motors, the nail shooter generates strong vibration during working, the generated vibration acceleration can exceed 50G, and a fan connected with a motor shaft is easily damaged; the carbon brushes and the commutator inside the motor are more prone to failure, resulting in a reduction in the service life of the entire motor.
Therefore, the prior art needs to be improved, a more reasonable technical scheme is provided, and the problems in the prior art are solved.
SUMMERY OF THE UTILITY MODEL
The problem that a fan connected with a motor shaft is easy to damage due to strong vibration generated when the existing gas nail shooter works is solved; the problem that the service life of the motor is reduced due to the fact that the carbon brush and the commutator inside the motor are prone to failure.
The embodiment of the utility model provides a brushless motor, brushless motor includes: the motor comprises a shell, an upper cover body, a lower cover body, a rotor assembly, a stator assembly and an elastic piece; the upper cover body and the lower cover body are clamped with the upper end and the lower end of the shell respectively, the rotor assembly is arranged in an inner cavity of the shell and is rotationally connected with the upper cover body and the lower cover body respectively, two ends of the stator assembly are clamped with the upper cover body and the lower cover body respectively and surround the periphery of the rotor assembly, and the elastic piece is arranged between the upper cover body and the rotor assembly and/or between the lower cover body and the rotor assembly.
In one possible design, the stator assembly includes: iron core, coil, go up skeleton and lower skeleton fixed connection respectively in the upper end and the lower extreme of iron core, the coil winding is on the iron core, goes up skeleton and last lid joint andor skeleton and lower lid joint down.
In one possible design, the rotor assembly includes a motor shaft and a rotor, the rotor is sleeved on the outer edge of the motor shaft, and the motor shaft is rotatably connected with the upper cover body and the lower cover body respectively.
In one possible design, the motor shaft is rotatably connected to the upper cover and the lower cover by bearings, respectively.
In one possible design, the brushless motor further comprises an upper bearing baffle and a lower bearing baffle; wherein, the upper bearing baffle is connected with the upper cover body, and the bearing is fixed between the upper cover body and the upper bearing baffle; the lower bearing blocking piece is connected with the lower cover body, and the bearing is fixed between the lower cover body and the lower cover body as well as the lower bearing blocking piece.
In one possible design, the brushless motor further comprises a fan, and the motor shaft penetrates through the lower cover body and then extends outwards to be connected with the fan.
In one possible design, the upper cover body is provided with an upper notch groove, the shell is provided with an upper convex block matched with the upper notch groove, and the upper cover body is connected with the upper end of the shell through the matching between the upper notch groove and the upper convex block.
In one possible design, the upper framework is provided with an upper convex block matched with the upper notch groove, and the upper framework is connected with the upper cover body through the matching between the upper convex block and the upper notch groove.
In one possible design, the lower cover body is provided with a lower notch groove, the outer shell is provided with a lower convex block matched with the lower notch groove, and the upper cover body is connected with the lower end of the outer shell through the matching between the lower notch groove and the lower convex block.
In one possible design, the lower framework is provided with a lower convex block matched with the lower notched groove, and the lower framework is connected with the lower cover body through the matching between the lower convex block and the lower notched groove.
Has the beneficial effects that:
in this embodiment, the brushless motor includes: the motor comprises a shell, an upper cover body, a lower cover body, a rotor assembly, a stator assembly and an elastic piece; the shell and the stator assembly are respectively clamped with the lower end cover and the upper end cover, and are combined and assembled into a whole, when the brushless motor works, the stator assembly cannot rotate with the shell, the upper cover body or the lower cover body, and a coil of the stator assembly cannot be twisted off. The elastic piece can be arranged between the rotor assembly and the upper cover body and between the lower cover body, or the elastic piece is arranged between the upper cover body and the rotor assembly, or the elastic piece is arranged between the lower cover body and the rotor assembly, and the impact acceleration of the rotor assembly when the gas nail shooter works is greatly reduced, so that the impact force of a fan arranged on the rotor assembly is reduced, and the service life of the fan is prolonged. Wherein, the elastic member can be a spring with linear contraction function or other elastic materials with linear contraction function.
The elastic piece is additionally arranged in the brushless motor, the buffer structure is formed by the elastic piece, and the two ends of the stator assembly are respectively clamped with the upper cover body and the lower cover body to prevent the stator from rotating relative to the shell, so that the shock resistance of the motor is improved, and the service life of the brushless motor and the fan connected with the brushless motor is prolonged. The problem that a fan connected with a motor shaft is easy to damage due to strong vibration generated when the existing gas nail shooter works is solved; the problem that the service life of the motor is reduced due to the fact that the carbon brush and the commutator inside the motor are prone to failure.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the contents of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following description will particularly refer to specific embodiments of the present invention.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is an overall assembly view of a brushless motor;
FIG. 2 is a stator assembly view;
FIG. 3 is a view of the housing;
FIG. 4 is an isometric view of the upper end cap;
FIG. 5 is an isometric view of the lower end cap;
FIG. 6 is an overall view of the rotor;
fig. 7 is a schematic view of the elastic member.
Icon: 10-a brushless motor; 11-a housing; 12-an upper cover body; 13-a lower cover body; 14-a rotor assembly; 15-a stator assembly; 16-a resilient member; 151-core; 152-a coil; 153-upper skeleton; 154-lower backbone; 141-motor shaft; 142-a rotor; 17-a bearing; 18-upper bearing barrier; 19-lower bearing retainer plate; 20-a fan; 21-upper notch groove; 22-upper bump; 23-an upper convex block; 24-lower notch groove; 25-lower bump; 26-convex downward block.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific embodiments. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto.
Referring to fig. 1 to fig. 7, for a brushless motor 10 according to an embodiment of the present invention, the brushless motor 10 includes: the structure comprises a shell 11, an upper cover body 12, a lower cover body 13, a rotor assembly 14, a stator assembly 15 and an elastic piece 16; the upper cover 12 and the lower cover 13 are respectively clamped with the upper end and the lower end of the housing 11, the rotor assembly 14 is disposed in the inner cavity of the housing 11 and is respectively rotatably connected with the upper cover 12 and the lower cover 13, two ends of the stator assembly 15 are respectively clamped with the upper cover 12 and the lower cover 13 and surround the periphery of the rotor assembly 14, and the elastic element 16 is disposed between the upper cover 12 and the rotor assembly 14 and/or between the lower cover 13 and the rotor assembly 14.
The existing motor of the gas nail shooter usually adopts a brush motor, the gas nail shooter generates strong vibration during working, the generated vibration acceleration usually exceeds 50G, the fan connected with a motor shaft is damaged, a carbon brush and a commutator in the motor are easy to lose efficacy, and the service life of the whole motor is even reduced.
In the present embodiment, the brushless motor 10 includes: the structure comprises a shell 11, an upper cover body 12, a lower cover body 13, a rotor assembly 14, a stator assembly 15 and an elastic piece 16; the housing 11 and the stator assembly 15 are respectively clamped with the lower end cover and the upper end cover, and are assembled into a whole, so that when the brushless motor 10 works, the stator assembly 15 and the housing 11, the upper cover 12 or the lower cover 13 cannot rotate, and the coil 152 of the stator assembly 15 cannot be twisted off. An elastic part 16 can be arranged between the rotor assembly 14 and the upper cover body 12 and between the lower cover body 13, or the elastic part 16 is arranged between the upper cover body 12 and the rotor assembly 14, or the elastic part 16 is arranged between the lower cover body 13 and the rotor assembly 14, so that the impact acceleration of the rotor assembly 14 when the gas nail shooter works is greatly reduced, the impact force of a fan 20 arranged on the rotor assembly 14 is reduced, and the service life of the fan 20 is prolonged. Wherein, the elastic member 16 can be a spring with linear contraction function or other elastic materials with linear contraction function.
The brushless motor 10 is additionally provided with the elastic piece 16, the elastic piece 16 forms a buffer structure, and two ends of the stator assembly 15 are respectively clamped with the upper cover body 12 and the lower cover body 13 to prevent the stator from rotating relative to the shell 11, so that the impact resistance of the brushless motor 10 is improved, and the service life of the brushless motor 10 and the fan 20 connected with the brushless motor is prolonged. Therefore, the problem that the fan connected with the motor shaft is easy to damage due to strong vibration generated when the existing gas nail shooter works is solved; the problem that the service life of the motor is reduced due to the fact that the carbon brush and the commutator inside the motor are prone to failure.
In one possible design, the stator assembly 15 includes: iron core 151, coil 152, go up skeleton 153 and lower skeleton 154 fixed connection respectively at the upper end and the lower extreme of iron core 151, coil 152 twines on iron core 151, goes up skeleton 153 and upper cover body 12 joint andor lower skeleton 154 and lower cover body 13 joint.
In one possible design, the rotor assembly 14 includes a motor shaft 141 and a rotor 142, the rotor 142 is sleeved on an outer edge of the motor shaft 141, and the motor shaft 141 is rotatably connected to the upper cover 12 and the lower cover 13 respectively. The magnetic field generated by the current flowing through the coil 152 acts on the rotor 142 to drive the motor shaft 141 to rotate at a high speed, and the motor shaft 141 is rotatably connected with the upper cover 12 and the lower cover 13 respectively to ensure the stability of the motor shaft 141 during rotation.
In one possible design, the motor shaft 141 is rotatably connected to the upper cover 12 and the lower cover 13 via bearings 17, respectively. In order to reduce the resistance of motor shaft 141 and improve the overall efficiency of brushless motor 10, motor shaft 141 is rotatably connected to upper cover 12 and lower cover 13 by bearings 17, respectively.
In one possible design, the brushless motor 10 further includes an upper bearing stop 18 and a lower bearing stop 19; wherein, the upper bearing baffle plate 18 is connected with the upper cover body 12, and the bearing 17 is fixed between the upper cover body 12 and the upper bearing baffle plate 18; the lower bearing retainer 19 is connected to the lower cover 13, and the bearing 17 is fixed between the lower cover 13 and the lower bearing retainer 19.
In order to facilitate the installation of the bearing 17, an upper bearing baffle 18 and a lower bearing baffle 19 are arranged, so that the installation difficulty of the brushless motor 10 is reduced, and the production efficiency of the brushless motor 10 is improved.
In one possible design, the brushless motor 10 further includes a fan 20, and the motor shaft 141 extends outward through the lower cover 13 and is connected to the fan 20. By arranging the fan 20, a single module is formed, and the modularized production and processing in a factory are facilitated.
In one possible design, the upper cover 12 is provided with an upper notch 21, the housing 11 is provided with an upper protrusion 22 matching the upper notch 21, and the upper cover 12 is connected to the upper end of the housing 11 by the fit between the upper notch 21 and the upper protrusion 22.
In this embodiment, the upper cover 12 is provided with an upper notch groove 21, and the housing 11 is provided with an upper protrusion 22 matching with the upper notch groove 21, so that the upper cover 12 is connected with the housing 11 in a limiting manner, and the upper cover 12 and the housing 11 are prevented from rotating during operation of the gas nail shooter; of course, other clamping structures can be adopted between the upper cover body 12 and the shell 11 to ensure that the gas nail shooter cannot rotate between the upper cover body 12 and the shell 11 during working.
In one possible design, upper frame 153 defines an upper convex block 23 matching upper notched groove 21, and upper frame 153 is connected to upper cover 12 by the cooperation between upper convex block 23 and upper notched groove 21.
When the gas nail shooter is in operation, the upper cover body 12 and the shell 11 cannot rotate, and meanwhile, deflection between the upper framework 153 and the upper cover body 12 cannot occur, so that damage to the coil 152 is reduced.
In one possible design, the lower cover 13 defines a lower notched groove 24, the housing 11 is provided with a lower protrusion 25 matching with the lower notched groove 24, and the upper cover 12 is connected to the lower end of the housing 11 through the engagement between the lower notched groove 24 and the lower protrusion 25.
It is clear that, in the embodiment, the lower cover 13 is provided with the notch groove, and the lower convex block 25 is provided on the housing 11, so as to ensure that the gas nail shooter does not deflect between the lower cover 13 and the housing 11 during operation; similarly, other clamping structures can be adopted between the lower cover body 13 and the shell 11 to ensure that the gas nail shooter cannot rotate between the lower cover body 13 and the shell 11 during working.
In one possible design, the lower frame 154 is provided with a lower convex block 26 matching with the lower notched groove 24, and the lower frame 154 is connected with the lower cover 13 through the matching between the lower convex block 26 and the lower notched groove 24.
While ensuring that the gas nail shooter does not rotate between the lower cover 13 and the housing 11 during operation, it is desirable to ensure that the lower frame 154 and the lower cover 13 do not deflect, thereby reducing damage to the coil 152.
In short, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A brushless motor, comprising: the motor comprises a shell, an upper cover body, a lower cover body, a rotor assembly, a stator assembly and an elastic piece; the upper cover body and the lower cover body are clamped with the upper end and the lower end of the shell respectively, the rotor assembly is arranged in an inner cavity of the shell and is connected with the upper cover body and the lower cover body in a rotating mode, two ends of the stator assembly are clamped with the upper cover body and the lower cover body respectively and surrounds the periphery of the rotor assembly, and the elastic piece is arranged between the upper cover body and the rotor assembly and/or between the lower cover body and the rotor assembly.
2. The brushless electric machine of claim 1, wherein the stator assembly comprises: iron core, coil, last skeleton and lower skeleton, go up skeleton and lower skeleton fixed connection respectively in the upper end and the lower extreme of iron core, the coil winding is in on the iron core, go up the skeleton with go up the lid joint and/or down the skeleton with lid joint down.
3. The brushless motor of claim 2, wherein the stator assembly includes a motor shaft and a rotor, the rotor is sleeved on an outer edge of the motor shaft, and the motor shaft is rotatably connected to the upper cover and the lower cover, respectively.
4. The brushless electric machine of claim 3, wherein the motor shaft is rotatably coupled to the upper and lower covers by bearings, respectively.
5. The brushless electric machine of claim 4, further comprising an upper bearing stop and a lower bearing stop; the upper bearing blocking piece is connected with the upper cover body, and the bearing is fixed between the upper cover body and the upper bearing blocking piece; the lower bearing blocking piece is connected with the lower cover body, and the bearing is fixed between the lower cover body and between the lower bearing blocking piece and the lower cover body.
6. The brushless motor of claim 3, further comprising a fan, wherein the motor shaft extends outward through the lower cover and is connected to the fan.
7. The brushless motor of claim 2, wherein the upper cover defines an upper cutout groove, the housing defines an upper protrusion matching the upper cutout groove, and the upper cover is coupled to the upper end of the housing by engagement between the upper cutout groove and the upper protrusion.
8. The brushless electric machine of claim 7, wherein the upper frame defines an upper protrusion matching the upper notch groove, and the upper frame is connected to the upper cover by the engagement between the upper protrusion and the upper notch groove.
9. The brushless motor of claim 2, wherein the lower cover defines a lower cutout groove, the housing defines a lower protrusion matching the lower cutout groove, and the upper cover is coupled to the lower end of the housing by engagement between the lower cutout groove and the lower protrusion.
10. The brushless motor of claim 9, wherein the lower bobbin is provided with a lower protrusion block matching the lower cutout groove, and the lower bobbin is coupled to the lower cover by fitting between the lower protrusion block and the lower cutout groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221913998.0U CN217935406U (en) | 2022-07-20 | 2022-07-20 | Brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221913998.0U CN217935406U (en) | 2022-07-20 | 2022-07-20 | Brushless motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217935406U true CN217935406U (en) | 2022-11-29 |
Family
ID=84149475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221913998.0U Active CN217935406U (en) | 2022-07-20 | 2022-07-20 | Brushless motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217935406U (en) |
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2022
- 2022-07-20 CN CN202221913998.0U patent/CN217935406U/en active Active
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