A stator assembly with improved insulation structure

Abstract

This utility model relates to the field of motor stator insulation technology, and discloses a stator assembly with improved insulation structure, including a stator core. The stator core contains multiple stator windings arranged in a circular array. A detachable and easily replaceable insulation component is provided between the stator core and the stator windings. Each stator winding has a fixing component on both sides that allows for quick installation and removal from the insulation component. By setting detachable insulation rings and fixing posts, the insulation structure and stator windings can be replaced individually, reducing maintenance costs. The fixing component, composed of sliding blocks, stops, and limiting plates, enables quick installation and removal of the stator windings, improving maintenance efficiency. The structural design of the "7"-shaped insulation ring, triangular stops, and friction rubber further improves the insulation reliability and fixing stability of the stator assembly, extending the service life of the motor.

Description

Technical Field

[0001] This utility model relates to the field of motor stator insulation technology, and in particular to a stator assembly with improved insulation structure. Background Technology

[0002] The stator assembly is the core stationary component of rotating electrical equipment such as motors and generators, forming the core of the electromagnetic induction system together with the rotor (rotating component). Simply put, the stator is the "stationary part," and its main function is to generate a rotating magnetic field by passing current through the windings, or to induce an electromotive force when the magnetic field changes, thereby realizing the conversion of electrical energy to mechanical energy (such as motor driving) or the conversion of mechanical energy to electrical energy (such as generator power generation).

[0003] Currently, the stator assembly is one of the core components of a motor, and its insulation performance directly affects the motor's safety, reliability, and service life. In traditional stator assemblies, the insulation structure between the stator core and the stator windings is mostly a fixed connection or an integrated design. When the insulation structure ages or is damaged, it is difficult to replace it separately. The entire stator assembly needs to be repaired or replaced, which increases maintenance costs and workload. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a stator assembly with improved insulation structure.

[0005] This utility model is achieved using the following technical solution: a stator assembly with improved insulation structure, comprising a stator core, wherein the stator core has multiple stator windings arranged in a ring array inside, and an detachable and easily replaceable insulation component is provided between the stator core and the stator windings. Each stator winding has a fixing component on both sides that allows for quick installation and removal of the stator winding from the insulation component. The stator core has mounting grooves on both end faces, and multiple fixing holes arranged in a ring array are provided on one side of each of the two mounting grooves. The insulation component includes an insulating ring disposed inside the two mounting grooves. The cross-section of each of the two insulating rings perpendicular to the end face is arranged in a "7" shape. A fixing post is inserted into each fixing hole, and one end of each fixing post is fixedly installed with an adjacent insulating ring. Each stator winding is in contact with the inner ring surface of the adjacent insulating ring.

[0006] Through the above technical solution, the insulating ring is detachably connected to the stator core through the fixing post and the fixing hole. When the insulating ring ages or is damaged, it can be directly removed and replaced without replacing the entire stator core, thus reducing maintenance costs.

[0007] As a further improvement to the above scheme, each stator winding has a symmetrical fixing opening on the side near the insulating ring. The fixing assembly includes a limiting plate disposed on both sides inside the fixing opening. The side of each of the two limiting plates near the stator core is fixedly installed with the inner ring surface of the adjacent insulating ring. The side of each of the two limiting plates away from each other has a first sliding groove. A sliding block is slidably installed inside each of the two first sliding grooves. A stop block is fixedly installed on one side of each of the two sliding blocks.

[0008] Through the above technical solution, the limiting plate provides lateral positioning for the stator winding, and the sliding block can move the stop block by sliding in the first sliding groove, so that the stop block can cooperate with the limiting plate to realize the quick installation and disassembly of the stator winding.

[0009] As a further improvement to the above solution, each of the fixed ports is provided with a limiting block inside, and a second sliding groove is symmetrically opened on the two sides of each limiting block away from each other. One end of each second sliding groove is connected to the adjacent first sliding groove, and the second sliding groove and the first sliding groove are both arranged in a "T" shape.

[0010] Through the above technical solution, the "T"-shaped sliding groove structure can prevent the sliding block from leaving the track during the sliding process, and improve the structural stability of the fixed component; the limiting block and the limiting plate cooperate to form a complete sliding track, ensuring the movement accuracy of the sliding block and the stop. When the sliding block and the stop move between the limiting block and the limiting plate, the limiting plate will be restricted by the second sliding groove of the limiting block, preventing the sliding block and the stop from tilting, thereby preventing the limiting plate from being pulled out of the fixing hole.

[0011] As a further improvement to the above scheme, each of the stops is triangularly arranged, and one side of each stop is in contact with one side of the adjacent stator winding. Each stator winding is fixed to the inner ring surface of the insulating ring through the cooperation between the adjacent limiting plates, stops and limiting blocks.

[0012] Through the above technical solution, the triangular stop block fits tightly against the side of the stator winding, and can generate pressure through the straight surface to improve the fixing effect on the stator winding; the multi-component fixing method ensures that the stator winding is not easy to loosen during operation, reducing vibration and wear.

[0013] As a further improvement to the above solution, a rubber groove is provided on one side of each of the stop blocks that fits against the limiting plate, and friction rubber is fixedly installed inside each of the rubber grooves. One side of each friction rubber is in contact with the adjacent limiting plate and limiting block.

[0014] Through the above technical solution, the friction rubber can increase the friction between the stop block and the limit plate and the limiting block, preventing the stop block from sliding on its own when the motor vibrates during operation.

[0015] As a further improvement to the above solution, a retaining ring for preventing stator winding sway is rotatably fitted on the opposite end faces of the two insulating rings. Multiple release ports arranged in a ring array are opened on the inner ring surface of the two retaining rings. The release ports are used to remove and replace the stator winding. A rubber ring is fixedly installed on the opposite side of the two retaining rings. A limiting ring is provided on the opposite side of the two rubber rings. The cylindrical surface of the two limiting rings is fixedly installed to the inner wall of the adjacent mounting groove.

[0016] Through the above technical solutions, the retaining ring can limit the stator winding and prevent it from moving axially during operation; the release port makes it easy to avoid the obstruction of the retaining ring when disassembling the stator winding; the rubber ring can reduce the vibration friction between the retaining ring and the limiting ring, prevent the retaining ring from rotating on its own, and reduce noise and wear; the limiting ring provides installation positioning for the retaining ring and the rubber ring, ensuring the stability of the axial limiting structure.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] This invention enables the individual replacement of the insulation structure and stator windings by setting detachable insulating rings and fixing posts, reducing maintenance costs; it utilizes fixing components composed of sliding blocks, stops, and limit plates to achieve quick assembly and disassembly of the stator windings, improving maintenance efficiency; and the structural design of the "7"-shaped insulating ring, triangular stops, and friction rubber further enhances the insulation reliability and fixing stability of the stator assembly, extending the service life of the motor. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of this utility model without the retaining ring, rubber ring and limiting ring;

[0021] Figure 3 This is a schematic diagram of the structure of the present invention with an insulating component;

[0022] Figure 4 This is a schematic diagram of the structure of the present invention with a fixing component;

[0023] Figure 5 This is a schematic diagram of the structure of the present invention having a first sliding groove and a second sliding groove;

[0024] Figure 6 This is a schematic diagram of the structure of this utility model, which has an installation groove and a fixing hole;

[0025] Figure 7 This utility model Figure 4 Enlarged view of the structure of part A.

[0026] Explanation of key symbols:

[0027] 1. Stator core; 2. Stator winding; 301. Insulating ring; 302. Fixing post; 401. Limiting plate; 402. First sliding groove; 403. Sliding block; 404. Stop block; 5. Mounting groove; 6. Fixing hole; 7. Limiting block; 8. Second sliding groove; 9. Friction rubber; 10. Retaining ring; 11. Rubber ring; 12. Limiting ring. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0029] Please combine Figures 1-7 The stator assembly with improved insulation structure according to this embodiment includes a stator core 1. The stator core 1 has a plurality of stator windings 2 arranged in a ring array inside. An insulating component that can be disassembled and easily replaced is provided between the stator core 1 and the stator windings 2. Each stator winding 2 has a fixing component on both sides that can quickly install and remove the stator winding 2 from the insulating component.

[0030] The stator core 1 has mounting grooves 5 on both ends. Each side of the two mounting grooves 5 has a plurality of fixing holes 6 arranged in a ring array. The insulation assembly includes an insulating ring 301 disposed inside the two mounting grooves 5. The cross-section of the two insulating rings 301 perpendicular to the end face is arranged in a "7" shape. A fixing post 302 is inserted into the inside of each fixing hole 6. One end of each fixing post 302 is fixedly installed with the adjacent insulating ring 301. Each stator winding 2 is in contact with the inner ring surface of the adjacent insulating ring 301.

[0031] The insulating ring 301 is detachably connected to the fixing hole 6 of the stator core 1 through the fixing post 302. When the insulating ring 301 ages or is damaged, it can be directly removed and replaced without replacing the entire stator core 1, thus reducing maintenance costs.

[0032] Each stator winding 2 has a symmetrical fixing opening on the side near the insulating ring 301. The fixing assembly includes a limiting plate 401 set on both sides inside the fixing opening. The side of the two limiting plates 401 near the stator core 1 is fixedly installed with the inner ring surface of the adjacent insulating ring 301. The side of the two limiting plates 401 away from each other is provided with a first sliding groove 402. The inside of the two first sliding grooves 402 is slidably installed with a sliding block 403. The side of the two sliding blocks 403 is fixedly installed with a stop block 404.

[0033] The limiting plate 401 provides lateral positioning for the stator winding 2. The sliding block 403 can slide in the first sliding groove 402 to drive the stop block 404 to move, so that the stop block 404 can cooperate with the limiting plate 401 to realize the quick installation and removal of the stator winding 2.

[0034] Each fixed opening has a limiting block 7 inside, and each limiting block 7 has a second sliding groove 8 symmetrically opened on the two sides away from each other. One end of each second sliding groove 8 is connected to the adjacent first sliding groove 402. The second sliding groove 8 and the first sliding groove 402 are both arranged in a "T" shape.

[0035] The “T”-shaped sliding groove structure can prevent the sliding block 403 from leaving the track during sliding, thus improving the structural stability of the fixed component. The limiting block 7 and the limiting plate 401 cooperate to form a complete sliding track, ensuring the moving accuracy of the sliding block 403 and the stop block 404. When the sliding block 403 and the stop block 404 move between the limiting block 7 and the limiting plate 401, the limiting plate 401 will be restricted by the second sliding groove 8 of the limiting block 7, preventing the sliding block 403 and the stop block 404 from tilting, thereby preventing the limiting plate 401 from being pulled out of the fixing hole.

[0036] Each stop 404 is triangularly arranged, and one side of each stop 404 is in contact with one side of the adjacent stator winding 2. Each stator winding 2 is fixed to the inner ring surface of the insulating ring 301 through the cooperation between the adjacent limiting plate 401, the stop 404 and the limiting block.

[0037] The triangular stop 404 fits tightly against the side of the stator winding 2, and can generate pressure through the straight surface to improve the fixing effect of the stator winding 2; the multi-component fixing method ensures that the stator winding 2 is not easy to loosen during operation, reducing vibration and wear.

[0038] Each stop 404 has a rubber groove on one side of the limiting plate 401, and a friction rubber 9 is fixedly installed inside each rubber groove. One side of each friction rubber 9 is in contact with the adjacent limiting plate 401 and limiting block 7.

[0039] The friction rubber 9 can increase the friction between the stop 404 and the limit plate 401 and the limiting block 7, and prevent the stop 404 from sliding on its own when the motor vibrates during operation.

[0040] Two insulating rings 301 are rotatably fitted with retaining rings 10 on their opposite ends to prevent the stator winding 2 from shaking. Multiple release ports arranged in a ring array are provided on the inner ring surface of the two retaining rings 10. The release ports are used to remove and replace the stator winding 2. Rubber rings 11 are fixedly installed on the opposite side of the two retaining rings 10. Limiting rings 12 are provided on the opposite side of the two rubber rings 11. The cylindrical surfaces of the two limiting rings 12 are fixedly installed to the inner wall of the adjacent mounting groove 5.

[0041] The retaining ring 10 can limit the stator winding 2 to prevent it from moving axially during operation; the release port makes it easy to avoid the obstruction of the retaining ring 10 when disassembling the stator winding 2; the rubber ring 11 can reduce the vibration friction between the retaining ring 10 and the limiting ring 12, so that the retaining ring 10 will not rotate on its own, and reduce noise and wear; the limiting ring 12 provides installation positioning for the retaining ring 10 and the rubber ring 11, ensuring the stability of the axial limiting structure.

[0042] The implementation principle of the stator assembly with improved insulation structure in this application embodiment is as follows: When installing the insulation assembly, open the limiting ring 12 and remove the rubber ring 11 and the retaining ring 10. Then, align the two insulating rings 301 with the mounting grooves 5 on both sides of the stator core 1, so that the fixing post 302 on the insulating ring 301 is aligned with the fixing hole 6 on one side of the mounting groove 5. Then, insert the fixing post 302 into the fixing hole 6 to complete the fixed installation of the insulating ring 301 and the stator core 1.

[0043] At this time, the inner ring surface of the insulating ring 301 forms an insulating support surface for mounting the stator winding 2.

[0044] When installing the stator winding 2, place the stator winding 2 between the two insulating rings 301, ensuring that its side surface is in contact with the inner ring surface of the insulating ring 301, and align the fixing opening on the stator winding 2 with the limiting plate 401. At this time, the sliding block 403 and the stop block 404 are both located inside the first sliding groove 402. Then, push the stator winding 2 forcefully, allowing the two stop blocks 404 and the limiting plate 401 to pass through the fixing opening of the stator winding 2. During the process of the stop blocks 404 passing through the fixing opening, the limiting plate 401 will be squeezed by the movement of the stop blocks 404 and the fixing opening. The deformation allows the two stops 404 to pass smoothly through the fixing opening. At the instant the two stops 404 pass through the fixing opening, the limiting plate 401 will spring back. Because the stops 404 have separated from the fixing opening and are no longer restricted by the fixing opening, the stops 404 will no longer be subjected to the squeezing force. After the limiting plate 401 springs back, one right-angled side of the stops 404 will fit against the stator winding 2, thereby preventing the limiting plate 401 from being pulled away from the fixing opening. The two limiting plates 401 maintain the restriction on the fixing opening, thereby fixing the position of the stator winding 2.

[0045] During the process of inserting the stop block 404 and the limiting plate 401 into the fixing port, the limiting block 7 on another insulating ring 301 will also pass through the same fixing port, and finally work together with the limiting plate 401 and the stop block 404 to restrict the fixing port and fix the stator winding 2.

[0046] After the stator winding 2 is fixed by the limiting plate 401, the stop block 404, and the limiting block 7, pushing the stop block 404 to move it will cause the sliding block 403 to move along with it, stopping it between the first sliding groove 402 and the second sliding groove 8. The opening length of the second sliding groove 8 is also just enough to resist the moving distance of the sliding block 403, allowing the sliding block 403 to stay between the first sliding groove 402 and the second sliding groove 8. At this time, the friction rubber 9 on the stop block 404 is in contact with the limiting plate 401 and the limiting block 7, fixing the position of the sliding block 403 and the stop block 404 through friction, preventing the sliding block 403 and the stop block 404 from moving freely. The stator winding 2 is fixed on the insulating ring 301 through the cooperation of the limiting plate 401, the stop block 404, the sliding block 403, and the limiting block 7.

[0047] Finally, the retaining ring 10, rubber ring 11, and limiting ring 12 are sequentially placed on top, and the limiting ring 12 is fixed to the inner wall of the mounting groove 5. Then, the retaining ring 10 is rotated to prevent the disengagement opening from coinciding with the position of the stator winding 2. In this way, the disengagement opening is deviated from the position of the stator winding 2. The retaining ring 10 is fitted with the limiting ring 12 through the rubber ring 11 to limit the axial movement of the stator winding 2.

[0048] When it is necessary to disassemble the stator winding 2, first rotate the retaining ring 10 to expose the release port, and then push the stop block 404 and the sliding block 403 in the opposite direction so that the sliding block 403 moves completely into the interior of the first sliding groove 402. In this way, the second sliding groove 8 can no longer exert a restrictive force on the sliding block 403 and the stop block 404. Then squeeze the two stop blocks 404 and pull them out of the fixing port when the limiting plate 401 bends, thereby releasing the fixation of the stator winding 2. The stator winding 2 can then be removed through the release port.

[0049] When it is necessary to replace the insulating ring 301, first disassemble all stator windings 2 according to the above steps, then pull the fixing post 302 out of the fixing hole 6, and the old insulating ring 301 can be removed. After replacing the new insulating ring 301, the stator windings 2 can be reinstalled.

[0050] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A stator assembly with improved insulation structure, comprising a stator core (1), wherein the stator core (1) has a plurality of stator windings (2) arranged in a ring array inside, characterized in that, An insulating assembly that can be disassembled and easily replaced is provided between the stator core (1) and the stator winding (2). Each stator winding (2) has a fixing assembly on both sides that can quickly install and remove the stator winding (2) from the insulating assembly. The stator core (1) has a mounting groove (5) on both end faces. Each of the two mounting grooves (5) has a plurality of fixing holes (6) arranged in a ring array on one side. The insulating assembly includes an insulating ring (301) disposed inside the two mounting grooves (5). The cross-section of the two insulating rings (301) perpendicular to the end face is arranged in a "7" shape. A fixing post (302) is inserted into the interior of each fixing hole (6). One end of each fixing post (302) is fixedly installed with the adjacent insulating ring (301). Each stator winding (2) is in contact with the inner ring surface of the adjacent insulating ring (301).

2. The stator assembly with improved insulation structure as described in claim 1, characterized in that, Each stator winding (2) has a symmetrical fixing opening on the side near the insulating ring (301). The fixing assembly includes a limiting plate (401) disposed on both sides inside the fixing opening. The two limiting plates (401) near the stator core (1) are fixedly installed on the inner ring surface of the adjacent insulating ring (301). The two limiting plates (401) far apart on the side are provided with a first sliding groove (402). The two first sliding grooves (402) are slidably installed with sliding blocks (403) inside. The two sliding blocks (403) are fixedly installed with a stop block (404) on one side.

3. The stator assembly with improved insulation structure as described in claim 2, characterized in that, Each of the fixed openings is provided with a limiting block (7) inside. Each limiting block (7) has a second sliding groove (8) symmetrically opened on the two sides away from each other. One end of each second sliding groove (8) is connected to the adjacent first sliding groove (402). The second sliding groove (8) and the first sliding groove (402) are both arranged in a "T" shape.

4. The stator assembly with improved insulation structure as described in claim 2, characterized in that, Each of the stops (404) is arranged in a triangle, and one side of each stop (404) is in contact with one side of the adjacent stator winding (2). Each stator winding (2) is fixed on the inner ring surface of the insulating ring (301) by the cooperation between the adjacent limiting plate (401), the stop (404) and the limiting block.

5. A stator assembly with improved insulation structure as described in claim 3, characterized in that, Each of the stop blocks (404) has a rubber groove on one side of the limiting plate (401), and a friction rubber (9) is fixedly installed inside each of the rubber grooves. One side of each friction rubber (9) is in contact with the adjacent limiting plate (401) and limiting block (7).

6. The stator assembly with improved insulation structure as described in claim 1, characterized in that, Each of the two insulating rings (301) has a retaining ring (10) that is rotatably attached to the opposite end face to prevent the stator winding (2) from shaking. The inner ring surface of each of the two retaining rings (10) has a plurality of release ports arranged in a ring array. The release ports are used to remove the stator winding (2) for replacement. Each of the two retaining rings (10) has a rubber ring (11) fixedly installed on the opposite side. Each of the two rubber rings (11) has a limiting ring (12) on the opposite side. The cylindrical surface of each of the two limiting rings (12) is fixedly installed to the inner wall of the adjacent mounting groove (5).

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