Lead structure of permanent magnet synchronous motor coil

Abstract

The application discloses a lead structure of a permanent magnet synchronous motor coil and belongs to the technical field of permanent magnet synchronous motor manufacturing and assembly. Mainly comprising a protective shell and a stator part, the stator part is arranged in the interior of the protective shell, the stator part comprises a stator coil fixedly installed on the inner wall of the protective shell, three positioning blocks are fixedly installed on the surface of the stator coil, a rotor assembly is arranged on one side of the stator part, a clamping piece is arranged on one side of the positioning block, and the clamping piece comprises a positioning ring fixedly installed on one side of the positioning block. The lead structure of the permanent magnet synchronous motor coil breaks through the limitation of the claw pole structure on the disassembly and assembly of the coil, simplifies the winding and taking-out process of the coil on the rotor assembly, improves the disassembly and assembly convenience, saves operation time, simultaneously solves the problem that the coil tail end is prone to displacement to cause the winding to be loose when the motor rotor is operated at high speed, and ensures the effect that the winding coil can be kept in a stable state for a long time.

Description

Technical Field

[0001] This application relates to the field of permanent magnet synchronous motor manufacturing and assembly technology, specifically to a lead structure for a permanent magnet synchronous motor coil. Background Technology

[0002] Permanent magnet synchronous motors have been widely used in new energy vehicles, industrial servo systems and core areas of home appliances due to their advantages of high efficiency, high power density and stable operation. The coil lead structure is the key hub connecting the motor windings and the external circuit, and its design rationality directly determines the assembly efficiency, operational reliability and service life of the motor.

[0003] However, some existing lead wire structures directly wind the coil onto a flange with claw poles. Due to the limitations of the claw poles on the flange, winding and removing the coil is troublesome and time-consuming, which is not conducive to the assembly and disassembly of the winding coil on the rotor. Furthermore, when leading out the end of the winding coil, the end of the coil is often inserted into the already wound coil. However, when the motor rotor rotates at high speed, the end of the coil is easy to rotate out, causing the winding coil to loosen.

[0004] Therefore, it is necessary to provide a lead structure for the permanent magnet synchronous motor coil to solve the above problems.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Utility Model Content

[0006] Based on the aforementioned problems in the existing technology, the problem to be solved by this application is to provide a lead wire structure for a permanent magnet synchronous motor coil, which can overcome the limitations of the claw pole structure on coil disassembly and assembly, simplify the winding and removal process of the coil on the rotor assembly to improve disassembly and assembly convenience and save operation time, and at the same time solve the problem that the coil end is prone to displacement when the motor rotor is running at high speed, resulting in loosening of the winding, and ensure that the winding coil maintains a stable state for a long time.

[0007] The technical solution adopted by this application to solve its technical problem is: a lead wire structure for a permanent magnet synchronous motor coil, including a protective shell and a stator component. The stator component is disposed inside the protective shell. The stator component includes a stator coil fixedly installed on the inner wall of the protective shell. Three positioning blocks are fixedly installed on the surface of the stator coil. A rotor assembly is disposed on one side of the stator component. A clamping member is disposed on one side of the positioning block. The clamping member includes a positioning ring fixedly installed on one side of the positioning block. A limit block is slidably connected to one side of the positioning ring. A limiting member is provided on one side of the clamping member, and a fixing member is provided on one side of the rotor assembly.

[0008] Furthermore, the rotor assembly includes a rotating shaft rotatably connected to the inner wall of the protective shell, a permanent magnet is fixedly connected to the surface of the rotating shaft, and a coil body is sleeved on the surface of the permanent magnet.

[0009] Furthermore, the clamping member also includes an adjusting rod fixedly connected to the side of the limiting block, and the surface of the adjusting rod is slidably connected to the side of the positioning ring.

[0010] Furthermore, the clamping member also includes six sliders slidably connected to the inner wall of the limiting block, and an auxiliary block is fixedly connected to one side of each slider.

[0011] Furthermore, the limiting component includes a limiting rod slidably connected to the inner wall of the adjusting rod, a rounded block is provided at the top of the limiting rod, and a spring is fixedly connected to one side of the limiting rod.

[0012] Furthermore, the limiting member also includes a fixing block fixedly installed on one side of the positioning block, and the plane side of the fixing block is opposite to the plane of the bottom of the limiting rod.

[0013] Furthermore, the fastener includes a bolt threaded to the side of the permanent magnet, and a locking block is fixedly connected to one end of the bolt.

[0014] The beneficial effects of this application are as follows: The lead wire structure of the permanent magnet synchronous motor coil provided by this application can effectively overcome the limitations of traditional claw pole structure on disassembly and assembly by setting the fixing parts, greatly simplify the winding and removal process of the winding coil on the rotor assembly, significantly improve the convenience of disassembly and assembly, save operation time, and through the coordinated cooperation of the clamping parts and the limiting parts, the limiting rod can lock the end of the coil. Even when the motor rotor is in a high-speed rotation condition, it can firmly limit the position of the end of the coil, completely avoid the problem of winding loosening caused by the coil turning out, and ensure that the winding coil always remains in a stable state.

[0015] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings: Figure 1 This is an overall schematic diagram of the lead structure of a permanent magnet synchronous motor coil according to this application; Figure 2 This is a schematic diagram of the stator coil and permanent magnet of a permanent magnet synchronous motor coil according to the present application; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 for Figure 2 Enlarged view of point B in the middle; Figure 5 This is a schematic diagram of a clamping device for the lead wire structure of a permanent magnet synchronous motor coil according to this application; Figure 6 This is a schematic diagram of the slider and positioning block of the lead wire structure of a permanent magnet synchronous motor coil according to this application; The following are the labeling elements in the figure: 1. Protective shell; 2. Stator components; 21. Stator coil; 22. Positioning block; 3. Rotor assembly; 31. Rotating shaft; 32. Permanent magnet; 33. Coil body; 4. Clamping components; 41. Positioning ring; 42. Limiting block; 43. Adjusting rod; 44. Slider; 45. Auxiliary block; 5. Limiting component; 51. Limiting rod; 52. Spring; 53. Fixing block; 6. Fixing component; 61. Bolt; 62. Locking block. Detailed Implementation

[0017] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0019] like Figure 1-6 As shown, this application provides a lead structure for a permanent magnet synchronous motor coil, including a protective shell 1 and a stator component 2. The stator component 2 is disposed inside the protective shell 1 and includes a stator coil 21 fixedly installed on the inner wall of the protective shell 1. Three positioning blocks 22 are fixedly installed on the surface of the stator coil 21. A rotor assembly 3 is disposed on one side of the stator component 2. The rotor assembly 3 includes a rotating shaft 31 rotatably connected to the inner wall of the protective shell 1. A permanent magnet 32 ​​is fixedly connected to the surface of the rotating shaft 31, and a coil body 33 is sleeved on the surface of the permanent magnet 32.

[0020] The protective shell 1 serves as the motor housing, protecting the internal core components and isolating them from external dust and moisture, ensuring the coaxiality and stability of the motor during operation. The stator 2 is the core of the stationary part of the motor. The stator coil 21 is supplied with three-phase alternating current to generate a rotating magnetic field, realizing the conversion of electrical energy into magnetic energy. The positioning block 22 constrains the position of the stator coil 21 and provides a mounting point for the lead wire structure. The rotor assembly 3 has a rotating shaft 31 that transmits rotational force output. The permanent magnet 32 ​​has holes on its surface, and the end of the coil body 33 is placed in the holes. The permanent magnet 32 ​​provides a stable permanent magnetic field that interacts with the stator rotating magnetic field to drive the rotor to rotate. The coil body 33 is used to optimize the magnetic circuit distribution and improve the motor efficiency.

[0021] Specifically, a clamping member 4 is provided on one side of the positioning block 22. The clamping member 4 includes a positioning ring 41 fixedly installed on one side of the positioning block 22, and a limiting block 42 is slidably connected to one side of the positioning ring 41. A limiting member 5 is provided on one side of the clamping member 4. The clamping member 4 also includes an adjusting rod 43 fixedly connected to the side of the limiting block 42, and the surface of the adjusting rod 43 is slidably connected to the side of the positioning ring 41. The clamping member 4 also includes six sliders 44 slidably connected to the inner wall of the limiting block 42, and an auxiliary block 45 is fixedly connected to one side of the sliders 44. The limiting member 5 includes a limiting rod 51 slidably connected to the inner wall of the adjusting rod 43, a round head block is provided on the top of the limiting rod 51, and a spring 52 is fixedly connected to one side of the limiting rod 51. The limiting member 5 also includes a fixing block 53 fixedly installed on one side of the positioning block 22, and the plane side of the fixing block 53 is opposite to the plane of the bottom of the limiting rod 51.

[0022] The positioning ring 41 has a groove on its side, and the surface of the adjusting rod 43 is slidably connected to the groove on the side of the positioning ring 41. The adjusting rod 43 is used to drive the limiting block 42 to rotate, thereby driving the slider 44 to slide inward and lock the wire end. The positioning ring 41 can prevent multiple lead wires from getting tangled. The groove on the side of the positioning ring 41 is the sliding track of the adjusting rod 43, which restricts the direction of movement. The limiting block 42 can drive the slider 44 to rotate and at the same time provide sliding guidance for the slider 44, ensuring that the slider 44 moves only radially and can fix the lead wire. The adjusting rod 43 is the force application point, which can drive the limiting block 42 to rotate. Through cooperation with the positioning ring 41, it can also limit the rotation range of the limiting block 42 to prevent excessive rotation from damaging the parts. When the slider 44 is subjected to force, it slides radially inward, and the evenly distributed multiple sets of sliders 44 can apply force to the lead wire from multiple directions to ensure that the force on the lead wire is balanced. To avoid damage to the lead wire due to excessive local force, the lead wire is clamped and fixed by contact with it. The auxiliary block 45 is used to assist the sliding direction of the slider 44 and improve clamping stability. The limiting rod 51 is a locking component that can lock the position of the adjusting rod 43 and the limiting block 42 after the lead wire is clamped, preventing the component from shifting due to motor vibration and thus preventing the lead wire from loosening. The top round head block is designed for easy operation and lifting. The coefficient of the spring 52 is 1~4N / mm. One end of the spring 52 is fixedly connected to the round head block, and the other end is fixedly connected to the adjusting rod 43. The spring 52 is an elastic power component that provides the elastic force required for locking the limiting rod 51, ensuring that the limiting rod 51 remains locked when there is no external force intervention, and resets during the unlocking operation. Multiple sets of fixing blocks 53 are provided. The fixing blocks 53 are used to limit the limiting rod 51 and thus assist the limiting rod 51 in fixing the adjusting rod 43.

[0023] Specifically, a fixing member 6 is provided on one side of the rotor assembly 3. The fixing member 6 includes a bolt 61 threaded to the side of the permanent magnet 32, and a locking block 62 is fixedly connected to one end of the bolt 61.

[0024] Among them, bolt 61 provides continuous and stable clamping force for clamping block 62, ensuring the long-term fixation of the lead wire. Clamping block 62 adopts an integrated design of flat base and arc-shaped clamping surface, which can maximize the fit to the lead wire surface and avoid local pressure concentration. Clamping block 62 can play a spatial isolation role for the lead wire, confining the lead wire to the fixed area on the side of permanent magnet 32, preventing the lead wire from contacting the surrounding metal parts due to centrifugal force, further reducing the risk of short circuit, and at the same time preventing the lead wire from being scratched and damaged by rotating parts, ensuring the stability of the rotor side circuit connection.

[0025] Working principle: When fixing the coil body 33, first place the end of the wire into the hole on the surface of the permanent magnet 32, then rotate the bolt 61. The bolt 61 is pushed axially towards the lead wire, causing the locking block 62, which is fixed at one end, to move synchronously. The locking block 62, through the structure of the flat base and the arc-shaped clamping surface, gradually fits against the surface of the lead wire and applies a stable clamping force, fixing the lead wire in the hole. Then, the coil body 33 is wound around the surface of the permanent magnet 32. After completion, the end of the wire is placed into the annular ring between the positioning ring 41 and the limiting block 42. Then, the limiting rod 51 is manually moved to drive the coil body 33 to move the wire into the hole. When the adjusting rod 43 slides, the bottom inclined surface of the limiting rod 51 is opposite to the inclined surface of the fixing block 53. The fixing block 53 does not limit the limiting rod 51. When the adjusting rod 43 slides, it drives the limiting block 42 to rotate synchronously along the positioning ring 41. During the rotation of the limiting block 42, the inner wall of the limiting block 42 squeezes the six sliders 44, causing the sliders 44 to slide inward along the inner wall of the limiting block 42 and then move closer to the lead wire until the sliders 44 are tightly attached to the surface of the lead wire. The lead wire is fixed by clamping in multiple directions. At this time, the bottom plane of the limiting rod 51 is aligned with the plane of the fixing block 53. Conversely, after fixing the adjusting rod 43, during disassembly, pull up the limiting rod 51. As the limiting rod 51 rises, it pulls up the spring 52. At the same time, the limiting rod 51 slides upward along the inner wall of the adjusting rod 43, disengaging from the locked engagement with the fixing block 53. At this time, reverse the adjustment rod 43, causing the limiting block 42 to rotate in the opposite direction along the groove of the positioning ring 41. As the limiting block 42 rotates, the radial pressure on the slider 44 gradually disappears, and the slider 44 slides outward along the inner wall of the limiting block 42 to reset, releasing the multi-directional clamping force on the end of the coil body 33. Then, the end of the coil is released from the coil body 33. Remove the coil body 33 from the annular ring between the positioning ring 41 and the limiting block 42, release the wire end of the coil body 33 from the fixing constraint, and after the wire end of the coil body 33 is freed from the fixing constraint, rotate the bolt 61 threaded to the permanent magnet 32 ​​in the opposite direction. The bolt 61 moves backward along the axial direction away from the hole on the surface of the permanent magnet 32, and at the same time drives the locking block 62 fixed at one end to move synchronously, releasing the clamping constraint on the lead wire. Then pull the wire end of the coil body 33 out from the hole opened on the surface of the permanent magnet 32, and slowly pull the coil body 33 along the axial direction of the permanent magnet 32 ​​to complete the disassembly of the wire end of the coil body 33.

[0026] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A lead structure for a permanent magnet synchronous motor coil, comprising a protective shell (1), characterized in that, Also includes: A stator component (2) is disposed inside the protective shell (1). The stator component (2) includes a stator coil (21) fixedly installed on the inner wall of the protective shell (1). Three positioning blocks (22) are fixedly installed on the surface of the stator coil (21). A rotor assembly (3) is disposed on one side of the stator component (2). A clamping component (4) is disposed on one side of the positioning block (22). The clamping component (4) includes a positioning ring (41) fixedly installed on one side of the positioning block (22). A limit block (42) is slidably connected to one side of the positioning ring (41). A limiting member (5) is provided on one side of the clamping member (4), and a fixing member (6) is provided on one side of the rotor assembly (3).

2. The lead structure of a permanent magnet synchronous motor coil according to claim 1, characterized in that: The rotor assembly (3) includes a rotating shaft (31) rotatably connected to the inner wall of the protective shell (1), a permanent magnet (32) is fixedly connected to the surface of the rotating shaft (31), and a coil body (33) is sleeved on the surface of the permanent magnet (32).

3. The lead structure of a permanent magnet synchronous motor coil according to claim 1, characterized in that: The clamping member (4) also includes an adjusting rod (43) fixedly connected to the side of the limiting block (42), and the surface of the adjusting rod (43) is slidably connected to the side of the positioning ring (41).

4. The lead structure of a permanent magnet synchronous motor coil according to claim 3, characterized in that: The clamping member (4) also includes six sliders (44) slidably connected to the inner wall of the limiting block (42), and an auxiliary block (45) is fixedly connected to one side of each slider (44).

5. The lead structure of a permanent magnet synchronous motor coil according to claim 4, characterized in that: The limiting member (5) includes a limiting rod (51) that is slidably connected to the inner wall of the adjusting rod (43). A round head block is provided on the top of the limiting rod (51), and a spring (52) is fixedly connected to one side of the limiting rod (51).

6. The lead structure of a permanent magnet synchronous motor coil according to claim 5, characterized in that: The limiting member (5) also includes a fixing block (53) fixedly installed on one side of the positioning block (22), and one side of the plane of the fixing block (53) is opposite to the plane of the bottom of the limiting rod (51).

7. The lead structure of a permanent magnet synchronous motor coil according to claim 2, characterized in that: The fastener (6) includes a bolt (61) threaded to the side of the permanent magnet (32), and a locking block (62) is fixedly connected to one end of the bolt (61).

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