Brushless inner rotor motor with wire fixing structure

Abstract

The utility model provides a brushless inner rotor motor with a wire fixing structure, relates to the field of brushless motors, and adopts the following scheme that the brushless inner rotor motor comprises a stator mechanism and further comprises a fixing plate, the stator mechanism comprises a rear wire frame and a leading-out wire, the rear wire frame comprises a ring body, one side of the ring body is provided with an outer ring and an inner ring, and the outer ring and the inner ring are arranged in parallel. An annular channel is formed between the outer ring and the inner ring, the outgoing line is wound in the annular channel, a plurality of buckle structures are arranged on the fixing plate, and the fixing plate is fixedly connected with the outer ring through the buckle structures and used for limiting the outgoing line. Through the plurality of buckle structures arranged on the fixing plate, rapid assembly of the fixing plate and the rear wire frame is realized, the outer ring and the inner ring are matched to form the channel space, the outgoing line is pressed and fixed, a traditional glue bonding wire fixing mode is replaced, the manufacturing time of the motor is shortened, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of brushless motor technology, and in particular to a brushless internal rotor motor with a fixed wire structure. Background Technology

[0002] A brushless internal rotor motor is a type of electric motor that uses electronic commutation instead of mechanical commutators and brushes for operation. Due to its high efficiency, low noise, good dynamic response characteristics, and ease of maintenance, brushless internal rotor motors are widely used in various industrial and consumer electronics products. When the brushless internal rotor motor is outputting high power, the motor is controlled by directly pulling out the lead wire and connecting it to an external controller. In this case, after the lead wire is soldered to the corresponding UVW wire (enameled wire), the lead wire needs to be glued to the coil for fixation.

[0003] Existing brushless internal rotor motors use glue to fix the lead wires to the coil, which has two drawbacks: firstly, applying glue is difficult, and secondly, the motor needs to be baked in a high-temperature oven for at least 30 minutes after applying glue, which prolongs the motor manufacturing time and reduces the production efficiency of the rotor motor. Therefore, we propose a brushless internal rotor motor with a fixed wire structure to solve this problem. Summary of the Invention

[0004] To address the aforementioned problems, this invention proposes a brushless internal rotor motor with a fixed-wire structure, which more precisely solves the problems described above.

[0005] This utility model is achieved through the following technical solution:

[0006] This utility model proposes a brushless internal rotor motor with a fixed wire structure, including a stator mechanism and a fixing plate. The stator mechanism includes a rear wire frame and lead wires. The rear wire frame includes a ring body, with an outer ring and an inner ring on one side of the ring body, forming an annular channel between the outer ring and the inner ring. The lead wires are wound in the annular channel. The fixing plate is provided with a plurality of snap-fit ​​structures, and the fixing plate is fixedly connected to the outer ring through the multiple snap-fit ​​structures for limiting the lead wires.

[0007] Furthermore, the fixing plate is arranged in a circular shape, and the buckle structure includes side plates and hook plates. Multiple side plates are fixedly connected to the outside of the fixing plate at equal intervals around the circumference, and the top of the hook plate is fixedly connected to the bottom of the corresponding side plate.

[0008] Furthermore, the outer ring includes a plurality of ear plates 1 arranged at equal intervals, and the inner ring includes a plurality of ear plates 2 arranged at equal intervals. A slot is provided on one side of several of the ear plates 1, and the slot is adapted to the hook plate.

[0009] Furthermore, a wire outlet hole is provided on the top of the fixing plate, through which the lead wire passes.

[0010] Furthermore, a plurality of arc-shaped holes are provided on one side of the fixing plate, and the plurality of arc-shaped holes are arranged in a circle.

[0011] Furthermore, a plurality of sector-shaped hollow columns are fixedly installed on one side of the ring body. The plurality of sector-shaped hollow columns are arranged at equal intervals around the circumference. The sector-shaped hollow columns are provided with cavities, which are connected to the annular channel.

[0012] Furthermore, a plurality of square grooves are provided on one side of the fixing plate, and the square grooves are provided on the top of the side plate.

[0013] Furthermore, a positioning groove is provided on the inner wall of the fixing plate, and a positioning plate is fixedly installed on the top of one of the multiple ear plates, the positioning plate being adapted to the positioning groove.

[0014] The beneficial effects of this utility model are as follows:

[0015] The fixing plate is equipped with several snap-fit ​​structures, which enable the quick assembly of the fixing plate and the rear wire frame. The outer and inner rings work together to form a channel space to press and fix the lead wires, replacing the traditional glue bonding method. This shortens the motor manufacturing time and improves production efficiency. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the lead wires of a brushless internal rotor motor with a fixed wire structure proposed in this utility model.

[0017] Figure 2 This is a three-dimensional structural diagram of the stator mechanism of a brushless internal rotor motor with a fixed wire structure proposed in this utility model.

[0018] Figure 3 This is a three-dimensional structural diagram of a fixing plate for a brushless internal rotor motor with a fixed wire structure proposed in this utility model.

[0019] Figure 4 This is a three-dimensional structural diagram of the rear wire frame of a brushless internal rotor motor with a fixed wire structure proposed in this utility model.

[0020] The attached figures are labeled as follows:

[0021] In the diagram: 1. Stator mechanism; 2. Fixing plate; 3. Rear wire frame; 4. Lead wire; 5. Side plate; 6. Hook plate; 7. Square groove; 8. Outer ring; 9. Inner ring; 10. Ear plate one; 11. Ear plate two; 12. Slot; 13. Positioning plate; 14. Outlet hole; 15. Arc hole; 16. Fan-shaped hollow column; 17. Positioning groove. Detailed Implementation

[0022] To more clearly and completely illustrate the technical solution of this utility model, the following description, in conjunction with the accompanying drawings, will further explain this utility model.

[0023] Please refer to Figures 1-4 The present invention proposes a brushless internal rotor motor with a fixed wire structure, including a stator mechanism 1 and a fixing plate 2. The stator mechanism 1 includes a rear wire frame 3 and lead wires 4. The rear wire frame 3 includes a ring body, with an outer ring 8 and an inner ring 9 on one side of the ring body. An annular channel is formed between the outer ring 8 and the inner ring 9. The lead wires 4 are wound in the annular channel. The fixing plate 2 is provided with a number of snap-fit ​​structures. The fixing plate 2 is fixedly connected to the outer ring 8 through the multiple snap-fit ​​structures to limit the lead wires 4.

[0024] It should be noted that the motor also includes a rotor mechanism and a housing. The stator mechanism 1 is mounted on the outside of the rotor mechanism. The housing encapsulates the stator mechanism 1 and the rotor mechanism. The stator mechanism 1 consists of a front wire frame, a stator core, a rear wire frame 3, a wire fixing plate, enameled wire, and lead wires 4. The rotor mechanism consists of a roller bearing, a thrust ring, a magnet, a rotor core, and a motor shaft.

[0025] In this embodiment, the fixing plate 2 is arranged in a circular shape. The buckle structure includes side plates 5 and hook plates 6. Multiple side plates 5 are fixedly connected to the outside of the fixing plate 2 at equal intervals around the circumference. The top of the hook plate 6 is fixedly connected to the bottom of the corresponding side plate 5. The outer ring 8 includes multiple ear plates 10 arranged at equal intervals. The inner ring 9 includes multiple ear plates 11 arranged at equal intervals. A slot 12 is opened on one side of several ear plates 10. The slot 12 is adapted to the hook plate 6. Through the buckle structure composed of the side plates 5 and the hook plate 6, the fixing plate 2 and the rear wire frame 3 can be quickly assembled.

[0026] In this embodiment, the top of the fixing plate 2 is provided with a wire outlet hole 14, through which the lead wire 4 passes to facilitate pulling out the lead wire and connecting it to an external controller.

[0027] In this embodiment, a plurality of arc-shaped holes 15 are provided on one side of the fixing plate 2, and the plurality of arc-shaped holes 15 are arranged in a circle. A plurality of fan-shaped hollow columns 16 are fixedly installed on one side of the ring body, and the plurality of fan-shaped hollow columns 16 are arranged in a circle at equal intervals. A cavity is provided on the fan-shaped hollow column 16, and the cavity is connected to the annular channel. Since the motor power is large, the current carried by the lead wire 4 is also large, resulting in more heat. The arrangement of the arc-shaped holes 15 and the fan-shaped hollow columns 16 improves the heat dissipation performance of the lead wire 4.

[0028] In this embodiment, a plurality of square grooves 7 are provided on one side of the fixing plate 2. The square grooves 7 are provided on the top of the side plate 5. The square grooves 7 at the connection between the side plate 5 and the ring body can help to disperse stress. When the buckle structure is fixed or released, stress concentration may occur, especially at the connection between the side plate 5 and the ring body. The square grooves 7 make the stress distribution more uniform, reduce the risk of material fatigue, and improve the durability of the structure.

[0029] In this embodiment, a positioning groove 17 is provided on the inner wall of the fixing plate 2, and a positioning plate 13 is fixedly installed on the top of one of the multiple ear plates 11. The positioning plate 13 is adapted to the positioning groove 17, and the cooperation between the positioning plate 13 and the positioning groove 17 plays a role in preventing mistakes.

[0030] Of course, there may be other implementations of this utility model. Based on this implementation, other implementations obtained by those skilled in the art without any creative effort are all within the scope of protection of this utility model.

Claims

1. A brushless internal rotor motor having a hard-wired construction, comprising a stator mechanism, characterized by, Also include the fixed plate, the stator mechanism includes the rear line frame and the lead-out wire, the rear line frame includes the ring body, one side of the ring body is provided with the outer ring and the inner ring, the annular channel is formed between the outer ring and the inner ring, the lead-out wire is wound in the annular channel, a plurality of buckle structures are arranged on the fixed plate, the fixed plate is fixedly connected with the outer ring through the plurality of buckle structures, and the lead-out wire is limited.

2. A brushless internal rotor electric motor having a hard-wired configuration according to claim 1, characterized in that, The fixed plate is arranged in a circular ring shape, the buckle structure includes a side plate and a hook plate, a plurality of side plates are fixedly connected on the outer side of the fixed plate at equal intervals, and the top of the hook plate is fixedly connected with the bottom of the corresponding side plate.

3. A brushless internal rotor electric motor having a hard-wired configuration according to claim 2, characterized in that, The outer ring includes a plurality of ear plates one arranged at equal intervals, the inner ring includes a plurality of ear plates two arranged at equal intervals, one side of some of the plurality of ear plates one is provided with a clamping groove, and the clamping groove is matched with the hook plate.

4. A brushless internal rotor electric motor having a hard-wired configuration according to claim 1, characterized in that, The top of the fixed plate is provided with a wire outlet hole, and the lead-out wire penetrates through the wire outlet hole.

5. A brushless internal rotor electric motor having a hard-wired configuration according to claim 1, wherein, One side of the fixed plate is provided with a plurality of arc-shaped holes, and the plurality of arc-shaped holes are arranged in a circular row.

6. A brushless internal rotor electric motor having a hard-wired configuration according to claim 1, wherein, A plurality of fan-shaped hollow columns are fixedly installed on one side of the ring body, the plurality of fan-shaped hollow columns are arranged at equal intervals in a circular row, a cavity is formed in the fan-shaped hollow column, and the cavity is communicated with the annular channel.

7. A brushless internal rotor electric motor having a hard-wired configuration according to claim 1, wherein One side of the fixed plate is provided with a plurality of square grooves, and the square grooves are arranged on the top of the side plate.

8. A brushless internal rotor electric motor having a hard-wired configuration according to claim 3, wherein A positioning groove is formed in the inner wall of the fixed plate, and the top of one of the plurality of ear plates two is fixedly provided with a positioning plate matched with the positioning groove.

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