CN219499088U - Inner rotor brushless motor - Google Patents
Inner rotor brushless motor Download PDFInfo
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- CN219499088U CN219499088U CN202320084520.XU CN202320084520U CN219499088U CN 219499088 U CN219499088 U CN 219499088U CN 202320084520 U CN202320084520 U CN 202320084520U CN 219499088 U CN219499088 U CN 219499088U
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- brushless motor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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Abstract
The utility model discloses an inner rotor brushless motor, which relates to the field of motor design and comprises a motor shell, a stator and a rotor, wherein the stator is fixedly arranged in the motor shell, and the rotor is arranged in the stator in a rotating fit manner; the motor shell comprises a shell body and a cover plate; the upper side of the stator is detachably provided with a circuit board, and a connector is embedded on the circuit board; a connector notch is formed at the upper edge of the outer side of the shell, the connector is positioned at the inner side of the connector notch, and a C-shaped blank holder is arranged between the connector notch and the connector in a matched manner; a frame structure is formed between the C-shaped blank holder and the connector notch, and the connector is installed in the frame structure through the cover plate in a pressing mode; the beneficial effects of the utility model are as follows: the cover plate can press the connector through the C-shaped pressing edge, so that stable installation of the connector is guaranteed, the connector cannot be loosened and unwelded after being plugged and unplugged for many times, and the service life is prolonged.
Description
Technical Field
The utility model relates to the field of motor design, in particular to an inner rotor brushless motor.
Background
The brushless DC motor is composed of a motor main body and a driver, and is a typical electromechanical integrated product. Because the brushless DC motor operates in a self-control mode, a starting winding is not additionally arranged on a rotor like a synchronous motor which is started under heavy load under variable frequency speed regulation, and oscillation and step-out can not be generated when the load is suddenly changed. The brushless motor has the advantages of high efficiency, long service life, ultrahigh rotating speed operation and small electromagnetic interference, so that along with the continuous development of motors and electronic technologies, the production technology of the brushless motor is gradually mature.
In China utility model (publication No. CN 216356180U, publication No. 2022.04.19), an improved structure for installing an inner rotor brushless motor wire frame is disclosed, wherein a connector is arranged on a circuit board and is used for facilitating electric connection of a brushless motor, but the connector is only inlaid on the circuit board, loose and desoldering phenomena of the connector are easy to occur after long-time use, the structure of the connector assembled on a motor shell is not recorded, the conventional installation mode is that a slot is directly formed on the motor shell, the connector is led out of the motor shell through the slot, and as no fixing measure is made between the connector and the slot, the connector is easy to occur desoldering phenomena after multiple plugging and unplugging, poor contact is caused, and normal use of the brushless motor is influenced.
For this purpose, it is necessary to design an inner rotor brushless motor on the basis of this.
Disclosure of Invention
The utility model provides a technical scheme capable of solving the problems in order to overcome the defects of the prior art.
An inner rotor brushless motor comprises a motor shell, a stator and a rotor, wherein the stator is fixedly arranged in the motor shell, and the rotor is arranged in the stator in a rotating fit manner;
the motor shell comprises a shell body and a cover plate, wherein a countersunk groove is formed in the upper end in the shell body, and the cover plate is inlaid and installed and fixed in the countersunk groove;
the upper side of the stator is detachably provided with a circuit board, and a connector is embedded on the circuit board;
a connector notch is formed at the upper edge of the outer side of the shell, the connector is positioned at the inner side of the connector notch, and a C-shaped blank holder is arranged between the connector notch and the connector in a matched manner;
the C-shaped blank holder and the connector notch form a frame structure, and the connector is installed in the frame structure through the cover plate in a pressing mode.
As a further scheme of the utility model: the left and right sides of C type blank holder all shaping has U type groove, the vertical setting of U type groove, the upper end of connector breach lets out the casing sets up, C type blank holder passes through two U type groove clearance fit installs in the connector breach.
As a further scheme of the utility model: the rotor comprises a rotating shaft and neodymium iron boron magnets, wherein the neodymium iron boron magnets are in cylindrical shapes, the neodymium iron boron magnets are installed in the stator in a clearance fit mode, the neodymium iron boron magnets are fixedly installed in the middle of the rotating shaft, and the upper end and the lower end of the rotating shaft are respectively communicated with the cover plate and the bottom side of the shell.
As a further scheme of the utility model: the upper end and the lower end of the rotating shaft are respectively provided with a left-handed screw and a right-handed screw in a pressing connection mode, and directional carved characters are respectively carved on the end faces of the left-handed screw and the right-handed screw.
As a further scheme of the utility model: the middle part of casing downside with the middle part of apron has the bearing groove all shaping, the mutual symmetry sets up between two bearing grooves, the middle part shaping in bearing groove has the through-hole, antifriction bearing is installed to clearance fit in the bearing groove, the pivot is passed through antifriction bearing normal running fit is installed in the through-hole in two bearing grooves.
As a further scheme of the utility model: the outer side of the rotating shaft is fixedly provided with two limiting rings, the neodymium-iron-boron magnet is positioned between the two limiting rings, the limiting rings are pressed at the inner ring of the rolling bearing, and the outer ring of the rolling bearing is pressed in the bearing groove.
As a further scheme of the utility model: and a wave washer is arranged between the outer ring of the rolling bearing and the bearing groove in a matched mode.
As a further scheme of the utility model: the stator comprises a fixing piece and two plug connectors, the two plug connectors are respectively inserted and installed at the upper end and the lower end of the fixing piece, a plurality of winding grooves are formed in the inner side of the fixing piece, the winding grooves are arranged in a mutually circular array, the plug connectors are inserted and installed in the winding grooves, copper wires are wound and installed on the two plug connectors, and the copper wires form a winding structure in the winding grooves.
As a further scheme of the utility model: the upper side the shaping has a plurality of location buckle on the plug connector, location buckle sets up inwards, the circuit board passes through a plurality of location buckle lock joint is installed the upside of stator, mutual circular array arranges between a plurality of location buckle.
As a further scheme of the utility model: the upper side edge of the shell is provided with a notch, the outer side of the cover plate is provided with a lug, and the lug is installed in the notch in a clearance fit manner.
Compared with the prior art, the utility model has the beneficial effects that: set up the connector breach in the outside of casing, the connector lets out the casing through the connector breach, after the apron installation is accomplished, and the apron can push down C type blank holder, and C type blank holder can compress tightly the connector and accomplish fixedly in the connector breach this moment, has guaranteed the stable installation of connector, and the connector can not take place not hard up when plug operation, and then guarantees the stable welding of connector on the circuit board, can not take place to weld easily, and life is ensured.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view of another view of the present utility model;
FIG. 3 is a schematic diagram of an exploded construction of the present utility model;
FIG. 4 is a schematic view of an exploded view of another view of the present utility model;
FIG. 5 is an enlarged schematic view of the structure at A of FIG. 4;
FIG. 6 is a schematic view of the structure of a C-shaped blank holder;
fig. 7 is a schematic cross-sectional structure of the present utility model.
The figure shows: 1. a motor housing; 1-1, a shell; 1-2, a cover plate; 2. a stator; 2-1, a fixing piece; 2-2, a plug connector; 3. a mover; 3-1, a rotating shaft; 3-2, a neodymium iron boron magnet; 4. a countersunk head groove; 5. a circuit board; 6. a connector; 7. a connector notch; 8. c-shaped blank pressing; 9. a U-shaped groove; 10. a left-handed screw; 11. a right-handed screw; 12. carving in the direction; 13. a bearing groove; 14. a through hole; 15. a rolling bearing; 16. a limiting ring; 17. a wave washer; 18. a wire winding groove; 19. positioning buckle; 20. a notch; 21. and a bump.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown.
The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model.
All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1 to 7, the inner rotor brushless motor comprises a motor shell 1, a stator 2 and a rotor 3, wherein the stator 2 is fixedly arranged in the motor shell 1, and the rotor 3 is arranged in the stator 2 in a rotating fit manner;
the motor shell 1 comprises a shell 1-1 and a cover plate 1-2, wherein a countersunk groove 4 is formed at the upper end in the shell 1-1, and the cover plate 1-2 is embedded and fixed in the countersunk groove 4;
a circuit board 5 is detachably arranged on the upper side of the stator 2, and a connector 6 is embedded and arranged on the circuit board 5;
a connector notch 7 is formed at the upper edge of the outer side of the shell 1-1, the connector 6 is positioned at the inner side of the connector notch 7, and a C-shaped blank holder 8 is arranged between the connector notch 7 and the connector 6 in a matched manner;
a frame structure is formed between the C-shaped blank holder 8 and the connector notch 7, and the connector 6 is installed in the frame structure through the cover plate 1-2 in a pressing mode;
the principle is as follows: the circuit board 5 is used for supplying power to windings on the stator 2, the rotor 3 can stably rotate in the stator 2, the connector 6 is arranged on the circuit board 5, the connector 6 can be conveniently used for wiring of a brushless motor, the connector notch 7 is arranged on the outer side of the shell 1-1, the connector 6 passes through the shell 1-1 through the connector notch 7, after the cover plate 1-2 is installed, the cover plate 1-2 can press the C-shaped blank pressing 8, at the moment, the C-shaped blank pressing 8 can press the connector 6 into the connector notch 7 to complete fixation, stable installation of the connector 6 is guaranteed, the connector 6 cannot be loosened during plugging operation, stable welding of the connector 6 on the circuit board 5 is guaranteed, desoldering cannot easily occur, and service life is guaranteed.
As a further scheme of the utility model: the left side and the right side of the C-shaped blank holder 8 are respectively provided with a U-shaped groove 9, the U-shaped grooves 9 are vertically arranged, the upper end of the connector notch 7 is arranged through the shell 1-1, and the C-shaped blank holder 8 is installed in the connector notch 7 through clearance fit of the two U-shaped grooves 9; the C-shaped pressing edge 8 is more stable to install in the connector notch 7, and the C-shaped pressing edge 8 can be directly taken out after the cover plate 1-2 is detached, so that the circuit board 5 and the connector 6 can be conveniently installed and detached.
As a further scheme of the utility model: the rotor 3 comprises a rotating shaft 3-1 and a neodymium iron boron magnet 3-2, the neodymium iron boron magnet 3-2 is in a cylindrical shape, the neodymium iron boron magnet 3-2 is installed in the stator 2 in a clearance fit manner, the neodymium iron boron magnet 3-2 is fixedly installed in the middle of the rotating shaft 3-1, and the upper end and the lower end of the rotating shaft 3-1 are respectively communicated with the cover plate 1-2 and the bottom side of the shell 1-1; after the stator 2 is electrified, the rotating shaft 3-1 can be driven to rotate through the windings and the neodymium iron boron magnet 3-2, so that the rotor 3 is driven to rotate, and the rotating stability of the rotor 3 is ensured.
As a further scheme of the utility model: the upper end and the lower end of the rotating shaft 3-1 are respectively provided with a left-handed screw 10 and a right-handed screw 11 in a pressing connection manner, and directional carved characters 12 are respectively carved and formed on the end surfaces of the left-handed screw 10 and the right-handed screw 11; the motor housing 1 is led out from both ends of the rotating shaft 3-1, and the brushless motor is applicable to the required occasion by installing the left-handed screw 10 and the right-handed screw 11, so that the practical use is convenient.
As a further scheme of the utility model: bearing grooves 13 are formed in the middle of the bottom side of the shell 1-1 and the middle of the cover plate 1-2, the two bearing grooves 13 are arranged symmetrically up and down, a through hole 14 is formed in the middle of the bearing groove 13, a rolling bearing 15 is arranged in the bearing groove 13 in a clearance fit manner, and the rotating shaft 3-1 is arranged in the through holes 14 of the two bearing grooves 13 in a rotation fit manner through the rolling bearing 15; so that the rotation of the rotating shaft 3-1 in the motor housing 1 is more stable.
As a further scheme of the utility model: two limiting rings 16 are fixedly arranged on the outer side of the rotating shaft 3-1, the neodymium-iron-boron magnet 3-2 is positioned between the two limiting rings 16, the limiting rings 16 are pressed on the inner ring of the rolling bearing 15, and the outer ring of the rolling bearing 15 is pressed in the bearing groove 13; the neodymium iron boron magnet 3-2 is not in a shifting state, the transmission piece is not shifted when being pressed on the rotating shaft 3-1, and the transmission piece comprises a screw piece, a gear piece and the like, so that the device is convenient for the actual use of the brushless motor.
As a further scheme of the utility model: the wave washer 17 is cooperatively installed between the outer ring of the rolling bearing 15 and the bearing groove 13, so that stable installation of the rolling bearing 15 can be ensured, and the rolling bearing 15 cannot loosen when the rotating shaft 3-1 rotates.
As a further scheme of the utility model: the stator 2 comprises a fixing piece 2-1 and two plug connectors 2-2, wherein the two plug connectors 2-2 are respectively inserted and installed at the upper end and the lower end of the fixing piece 2-1, a plurality of winding grooves 18 are formed on the inner side of the fixing piece 2-1, the plurality of winding grooves 18 are arranged in a mutually circular array, the plug connectors 2-2 are inserted and installed in the plurality of winding grooves 18, copper wires (not shown) are wound and installed on the two plug connectors 2-2, and the copper wires (not shown) form a winding structure in the plurality of winding grooves 18; the stator 2 shell drives the rotor 3 to rotate through a winding structure, so that stable rotation of the rotor 3 is ensured, the copper wires (not shown in the drawing) and the fixing pieces 2-1 can be effectively protected by the arrangement of the two plug connectors 2-2, and the service life of the stator 2 is ensured.
As a further scheme of the utility model: a plurality of positioning buckles 19 are formed on the plug connector 2-2 on the upper side, the positioning buckles 19 are inwards arranged, the circuit board 5 is buckled and installed on the upper side of the stator 2 through the plurality of positioning buckles 19, and the plurality of positioning buckles 19 are arranged in a mutually circular array; the mounting and dismounting of the circuit board 5 can be facilitated.
As a further scheme of the utility model: a notch 20 is formed at the upper side edge of the shell 1-1, a lug 21 is formed at the outer side of the cover plate 1-2, and the lug 21 is installed in the notch 20 in a clearance fit manner; the condition that rotation can not occur after the cover plate 1-2 is installed is guaranteed, and the cover plate 1-2 is installed and positioned on the shell 1-1 more accurately.
The present embodiment is not limited in any way by the shape, material, structure, etc. of the present utility model, and any simple modification, equivalent variation and modification made to the above embodiments according to the technical substance of the present utility model are all included in the scope of protection of the technical solution of the present utility model.
Claims (10)
1. An inner rotor brushless motor comprises a motor shell, a stator and a rotor, wherein the stator is fixedly arranged in the motor shell, and the rotor is arranged in the stator in a rotating fit manner;
the method is characterized in that: the motor shell comprises a shell body and a cover plate, wherein a countersunk groove is formed in the upper end in the shell body, and the cover plate is inlaid and installed and fixed in the countersunk groove;
the upper side of the stator is detachably provided with a circuit board, and a connector is embedded on the circuit board;
a connector notch is formed at the upper edge of the outer side of the shell, the connector is positioned at the inner side of the connector notch, and a C-shaped blank holder is arranged between the connector notch and the connector in a matched manner;
the C-shaped blank holder and the connector notch form a frame structure, and the connector is installed in the frame structure through the cover plate in a pressing mode.
2. An inner rotor brushless motor as claimed in claim 1, wherein: the left and right sides of C type blank holder all shaping has U type groove, the vertical setting of U type groove, the upper end of connector breach lets out the casing sets up, C type blank holder passes through two U type groove clearance fit installs in the connector breach.
3. An inner rotor brushless motor as claimed in claim 1, wherein: the rotor comprises a rotating shaft and neodymium iron boron magnets, wherein the neodymium iron boron magnets are in cylindrical shapes, the neodymium iron boron magnets are installed in the stator in a clearance fit mode, the neodymium iron boron magnets are fixedly installed in the middle of the rotating shaft, and the upper end and the lower end of the rotating shaft are respectively communicated with the cover plate and the bottom side of the shell.
4. An inner rotor brushless motor according to claim 3, wherein: the upper end and the lower end of the rotating shaft are respectively provided with a left-handed screw and a right-handed screw in a pressing connection mode, and directional carved characters are respectively carved on the end faces of the left-handed screw and the right-handed screw.
5. An inner rotor brushless motor according to claim 3, wherein: the middle part of casing downside with the middle part of apron has the bearing groove all shaping, the mutual symmetry sets up between two bearing grooves, the middle part shaping in bearing groove has the through-hole, antifriction bearing is installed to clearance fit in the bearing groove, the pivot is passed through antifriction bearing normal running fit is installed in the through-hole in two bearing grooves.
6. The inner rotor brushless motor of claim 5, wherein: the outer side of the rotating shaft is fixedly provided with two limiting rings, the neodymium-iron-boron magnet is positioned between the two limiting rings, the limiting rings are pressed at the inner ring of the rolling bearing, and the outer ring of the rolling bearing is pressed in the bearing groove.
7. The inner rotor brushless motor of claim 6, wherein: and a wave washer is arranged between the outer ring of the rolling bearing and the bearing groove in a matched mode.
8. An inner rotor brushless motor as claimed in claim 1, wherein: the stator comprises a fixing piece and two plug connectors, the two plug connectors are respectively inserted and installed at the upper end and the lower end of the fixing piece, a plurality of winding grooves are formed in the inner side of the fixing piece, the winding grooves are arranged in a mutually circular array, the plug connectors are inserted and installed in the winding grooves, copper wires are wound and installed on the two plug connectors, and the copper wires form a winding structure in the winding grooves.
9. The inner rotor brushless motor of claim 8, wherein: the upper side the shaping has a plurality of location buckle on the plug connector, location buckle sets up inwards, the circuit board passes through a plurality of location buckle lock joint is installed the upside of stator, mutual circular array arranges between a plurality of location buckle.
10. An inner rotor brushless motor as claimed in claim 1, wherein: the upper side edge of the shell is provided with a notch, the outer side of the cover plate is provided with a lug, and the lug is installed in the notch in a clearance fit manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320084520.XU CN219499088U (en) | 2023-01-29 | 2023-01-29 | Inner rotor brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320084520.XU CN219499088U (en) | 2023-01-29 | 2023-01-29 | Inner rotor brushless motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219499088U true CN219499088U (en) | 2023-08-08 |
Family
ID=87482930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320084520.XU Active CN219499088U (en) | 2023-01-29 | 2023-01-29 | Inner rotor brushless motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219499088U (en) |
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2023
- 2023-01-29 CN CN202320084520.XU patent/CN219499088U/en active Active
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