External rotor brushless motor with iron core coated wire frame fixing plate
By designing a core-coated wire frame fixing plate and utilizing the combination of an insulating bracket and a reinforcing ring, the problems of large space occupation and poor insulation effect of screw locking are solved, thereby improving the stability and insulation effect of the motor.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUNAN GUOMENG TECH CO LTD
- Filing Date
- 2025-06-23
- Publication Date
- 2026-06-30
AI Technical Summary
In existing brushless motors, the screw-locking motor control board installation method occupies a large amount of internal space, limits the design height, and has poor insulation, which can easily lead to motor failure.
The structure adopts a wire frame fixing plate with iron core and rubber coating. Through the design of insulating bracket and reinforcing ring, the motor control board is stably installed by the cooperation of positioning buckles and positioning pins. The insulating bracket provides full insulation to avoid conductive contact between the motor control board and the winding.
The size of the motor was reduced, ensuring the design height of the motor. The insulation bracket was used to fully insulate the inside of the motor, improving the stability and insulation effect of the motor and preventing motor failure.
Smart Images
Figure CN224438633U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of motor design, and in particular to an external rotor brushless motor with a core-coated wire frame fixing plate. Background Technology
[0002] A brushless DC motor consists of a motor body and a driver, and is a typical mechatronic product. Because a brushless DC motor operates in a self-controlled manner, it does not require an additional starting winding on the rotor like a synchronous motor that starts under heavy load with frequency conversion speed regulation, nor does it experience oscillation or loss of synchronism during sudden load changes.
[0003] In brushless motors, a motor control board is used to change the energizing direction of the windings to achieve commutation and high-speed operation. Currently, the motor control board is generally installed using screws for locking. Specifically, screws are used to lock the motor control board to the motor bracket to form a stable motor structure. However, the screw installation method has the problem of occupying a lot of internal space, which limits the design height of the motor. Moreover, when using screws for locking, the insulation effect between the motor control board and the windings is poor because the screws are conductive, which can easily lead to motor failure.
[0004] Therefore, it is necessary to design an external rotor brushless motor with an iron core coated wire frame fixing plate to solve this problem. Utility Model Content
[0005] To overcome the shortcomings mentioned above, this utility model provides a technical solution that can solve the above problems.
[0006] The outer rotor brushless motor with iron core rubber-coated wire frame fixing plate includes a stator and a mover. The mover covers the stator and drives the mover to rotate when the stator is energized.
[0007] The stator includes an iron core body, an insulating support, and a motor control board;
[0008] The iron core body is integrally formed with several winding slots, which are arranged in a circular array with each other, and the insulating bracket wraps around the several winding slots.
[0009] A reinforcing ring is integrally formed in the middle of the bottom side of the insulating bracket, and multiple positioning buckles are integrally formed on the bottom side of the reinforcing ring. Multiple buckle slots are integrally formed on the motor control board, and the positioning buckles are installed in the buckle slots with corresponding gap fit.
[0010] Furthermore: the bottom side of the reinforcing ring is integrally formed with multiple positioning pins, and the motor control board is integrally formed with multiple pin holes, with the positioning pins being inserted into the pin holes in a one-to-one clearance fit.
[0011] Furthermore, the positioning pin and the positioning buckle are spaced apart from each other.
[0012] Furthermore, the positioning buckles are provided in three parts, and the three positioning buckles are arranged in a circular array on the bottom side of the reinforcing ring.
[0013] Furthermore, the motor control board has an integrally formed mounting hole in the middle, and the snap groove and pin hole are evenly distributed on the outer side of the mounting hole.
[0014] Furthermore: a copper wire winding is wound and installed on the insulating support of the iron core body. The copper wire winding is wound in several winding slots through the insulating support, and the ends of the copper wire winding are electrically connected and installed on the motor control board.
[0015] Furthermore, a permanent magnet ring is fixedly installed inside the mover, and when the copper wire winding is energized, the mover is driven to rotate through the permanent magnet ring.
[0016] Furthermore, the permanent magnet ring is disposed on the outside of the iron core body.
[0017] Furthermore, a connector is electrically connected to the motor control board, and the connector supplies power to the copper wire winding through the motor control board.
[0018] Compared with the prior art, the beneficial effects of this utility model are:
[0019] 1. A reinforcing ring is set on the bottom side of the insulating bracket, and the installation and fixation between the insulating bracket and the iron core body are achieved by using the gap of the positioning buckle to fit into the buckle groove. This reduces the overall volume of the brushless motor and does not limit the design height of the motor.
[0020] 2. The iron core body is fully insulated by wrapping it with an insulating bracket. At the same time, the iron core body and the motor control board are also fully insulated by the insulating bracket to prevent motor failure.
[0021] Additional aspects and advantages of this invention 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 invention. Attached Figure Description
[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0023] Figure 1 This is a schematic diagram of the stator structure of this utility model;
[0024] Figure 2 This is a structural diagram of the stator when the motor control board is removed;
[0025] Figure 3 This is a schematic diagram of the exploded structure of the stator;
[0026] Figure 4 yes Figure 3 A magnified structural diagram at point A;
[0027] Figure 5 This is a schematic diagram of the exploded structure of the stator from another perspective;
[0028] Figure 6 This is an exploded structural diagram of the present invention.
[0029] The figure shows: 1. Iron core body; 2. Insulating bracket; 3. Motor control board; 4. Winding slot; 5. Reinforcing ring; 6. Positioning buckle; 7. Buckle groove; 8. Positioning pin; 9. Pin hole; 10. Mounting hole; 11. Connector; 12. Stator; 13. Mover; 14. Permanent magnet ring. Detailed Implementation
[0030] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.
[0031] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.
[0032] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0033] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0035] like Figure 1-6 As shown, the external rotor brushless motor of the iron core rubber-coated wire frame fixing plate of this utility model includes a stator 12 and a mover 13. The mover 13 covers the stator 12 and drives the mover 13 to rotate when the stator 12 is energized.
[0036] The stator 12 includes an iron core body 1, an insulating support 2, and a motor control board 3;
[0037] The iron core body 1 is integrally formed with a number of winding slots 4, which are arranged in a circular array with each other. The insulating bracket 2 is set to wrap around the number of winding slots 4.
[0038] The insulating bracket 2 has an integrally formed reinforcing ring 5 at the bottom center, and multiple positioning buckles 6 are integrally formed on the bottom side of the reinforcing ring 5. Multiple buckle slots 7 are integrally formed on the motor control board 3, and the positioning buckles 6 are installed in the buckle slots 7 with corresponding gaps.
[0039] The principle is as follows: a reinforcing ring 5 is set on the bottom side of the insulating bracket 2, and the mounting and fixing between the insulating bracket 2 and the iron core body 1 is achieved by using the positioning buckle 6 to fit into the buckle groove 7. This reduces the volume of the entire brushless motor and does not limit the design height of the motor. The insulating bracket 2 is used to wrap the iron core body 1 for full insulation. At the same time, the iron core body 1 and the motor control board 3 can also be fully insulated through the insulating bracket 2 to prevent motor failure.
[0040] Furthermore: the bottom side of the reinforcing ring 5 is integrally formed with multiple positioning pins 8, and the motor control board 3 is integrally formed with multiple pin holes 9. The positioning pins 8 are inserted into the pin holes 9 with a clearance fit. The matching structure of the positioning pins 8 and pin holes 9 realizes the fixation of the reinforcing ring 5 on the motor control board 3. The two will not rotate relative to each other, and the stability of the motor is higher.
[0041] Furthermore, the positioning pin 8 and the positioning buckle 6 are spaced apart from each other, so that the positioning pin 8 and the positioning buckle 6 do not affect each other.
[0042] Furthermore, three positioning buckles 6 are provided, and the three positioning buckles 6 are arranged in a circular array on the bottom side of the reinforcing ring 5. This ensures a stable engagement between the motor control board 3 and the reinforcing ring 5, preventing any loosening on one side.
[0043] Furthermore: the motor control board 3 is integrally formed with a mounting hole 10 in the middle, and the snap groove 7 and pin hole 9 are evenly distributed on the outside of the mounting hole 10; the mounting hole 10 facilitates the stable installation of the motor control board 3 on the motor support.
[0044] Furthermore, a copper wire winding is wound around the insulating support 2 of the iron core body 1. The copper wire winding is wound in several winding slots 4 through the insulating support 2. The ends of the copper wire winding are electrically connected to the motor control board 3. The motor control board 3 is used to change the energizing direction of the copper wire winding to realize the high-speed operation of the mover 13. The setting of the insulating support 2 can make the winding of the copper wire winding more uniform, while ensuring sufficient insulation between the copper wire winding and the iron core body 1.
[0045] Furthermore, a permanent magnet ring 14 is fixedly installed inside the mover 13. When the copper wire winding is energized, the mover 13 is driven to rotate through the permanent magnet ring 14. The high-speed operation of the mover 13 is achieved through the cooperation of the magnetic field, thereby ensuring the stable operation of the brushless motor.
[0046] Furthermore, the permanent magnet ring 14 is disposed on the outside of the iron core body 1, which makes the magnetic field more stable and ensures the stable operation of the brushless motor.
[0047] Furthermore, the motor control board 3 is electrically connected to a connector 11, which powers the copper wire windings through the motor control board 3; this facilitates wiring operations on the motor control board 3 and makes the brushless motor easier to use.
[0048] This embodiment does not impose any limitation on the shape, material, structure, etc. of this utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model shall fall within the protection scope of this utility model.
Claims
1. An external rotor brushless motor with a rubber-coated wire frame fixing plate, comprising a stator and a mover, wherein the mover covers the stator and drives the mover to rotate when the stator is energized; characterized in that: The stator includes an iron core body, an insulating support, and a motor control board; The iron core body is integrally formed with several winding slots, which are arranged in a circular array with each other, and the insulating bracket wraps around the several winding slots. A reinforcing ring is integrally formed in the middle of the bottom side of the insulating bracket, and multiple positioning buckles are integrally formed on the bottom side of the reinforcing ring. Multiple buckle slots are integrally formed on the motor control board, and the positioning buckles are installed in the buckle slots with corresponding gaps.
2. The external rotor brushless motor with a rubber-coated wire frame fixing plate according to claim 1, characterized in that: The bottom side of the reinforcing ring is integrally formed with multiple positioning pins, and the motor control board is integrally formed with multiple pin holes. The positioning pins are inserted into the pin holes with a clearance fit.
3. The external rotor brushless motor with a rubber-coated wire frame fixing plate according to claim 2, characterized in that: The positioning pin and the positioning buckle are spaced apart from each other.
4. The external rotor brushless motor with a rubber-coated wire frame fixing plate according to any one of claims 1-3, characterized in that: The positioning buckles are provided in three parts, and the three positioning buckles are arranged in a circular array on the bottom side of the reinforcing ring.
5. The external rotor brushless motor with a rubber-coated wire frame fixing plate according to claim 2, characterized in that: The motor control board has an integrally formed mounting hole in the middle, and the slots and pin holes are evenly distributed on the outer side of the mounting hole.
6. The external rotor brushless motor with a rubber-coated wire frame fixing plate according to claim 1, characterized in that: A copper wire winding is wound around the insulating support of the iron core body. The copper wire winding is wound in several winding slots through the insulating support, and the ends of the copper wire winding are electrically connected to the motor control board.
7. The external rotor brushless motor with a rubber-coated wire frame fixing plate according to claim 6, characterized in that: A permanent magnet ring is fixedly installed inside the mover. When the copper wire winding is energized, the mover is driven to rotate through the permanent magnet ring.
8. The external rotor brushless motor with a rubber-coated wire frame fixing plate according to any one of claims 6 or 7, characterized in that: The motor control board is electrically connected to a connector, which powers the copper wire windings through the motor control board.