Tooth and yoke separated embedded stator

Abstract

The utility model discloses a tooth-yoke separated embedded stator, which comprises a stator yoke ring and a stator inner ring, a plurality of coil tooth racks are integrally formed on the outer peripheral surface of the stator inner ring, the connecting positions of the outer peripheral surface of the stator inner ring and the coil tooth racks are thickened, the tail ends of the coil tooth racks are widened to form assembling parts, and the assembling parts are assembled on the stator yoke ring. And a reinforcing boss is arranged on the inner circumferential surface of the stator yoke ring corresponding to the assembly part of the coil tooth frame. The stator inner ring and the plurality of coil tooth frames are integrally formed, so that the coil tooth frames are positioned and fixed, meanwhile, all the coil tooth frames and the stator yoke ring can be quickly assembled at the same time through one-time assembly by matching the clamping positions with the bulges, and the assembly efficiency is greatly improved. And through the thickening design of the connection position of the outer peripheral surface of the stator inner ring and the coil tooth frame and the assembly part formed by widening the tail end of the coil tooth frame, the connection structural strength of the coil tooth frame is further enhanced, the overall structural stability of the stator iron core is effectively improved, and shaking is reduced.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, specifically to a tooth-yoke separation embedded stator used in motors. Background Technology

[0002] The traditional manufacturing method for motor stators generally involves first punching out stator laminations as a whole, then stacking the stator laminations to form a monolithic stator core, and finally using a winding machine to wind stator windings on this monolithic stator core. However, this stator manufacturing method is limited by the winding space requirements, resulting in a low slot fill factor, and the slot openings on the stator core need to be designed to be relatively large, thus affecting the improvement of motor performance.

[0003] To address this, a split-type stator has been introduced to the market, comprising a toothed core and a yoke core. After the stator windings are wound on the toothed core, the toothed core is then assembled onto the yoke core. For example, utility model publication number "CN201854101U" discloses a split-type servo motor stator, comprising several frame-shaped stator plates with several notches on the inner side of each plate. The stator plates are stacked and fixed together, with each notch corresponding to the others to form a stator slot. Stator racks for winding coils are inserted into these slots. While this design improves winding efficiency and slot fill factor, assembly requires assembling the stator racks one by one, resulting in low assembly efficiency. Furthermore, only one end of the stator rack is assembled and fixed, leaving the other end susceptible to vibration and resulting in poor structural stability. Utility Model Content

[0004] To address the aforementioned shortcomings, the purpose of this utility model is to provide a tooth-yoke separation and inlay stator with a reasonable structural design, easy assembly, and good structural stability.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0006] A toothed yoke-separated inlaid stator includes a stator yoke ring and a stator inner ring. A plurality of coil tooth frames arranged in a replicant circular array are integrally formed on the outer circumferential surface of the stator inner ring. The outer circumferential surface of the stator inner ring is thickened at the connection position with the coil tooth frames. The ends of the coil tooth frames are widened to form an assembly part. A locking position is provided in the middle of the assembly part. A reinforcing boss is provided on the inner circumferential surface of the stator yoke ring corresponding to the assembly part of the coil tooth frames. The reinforcing boss has a protrusion adapted to the locking position.

[0007] As a preferred embodiment of this utility model, the corner of the reinforcing boss is provided with an arc-shaped notch to avoid sharp corner protrusions, reduce space occupation, and also avoid damage to the coil during the assembly process.

[0008] As a preferred embodiment of this utility model, the corners of the assembly part are provided with arc-shaped chamfers to avoid sharp edges causing scratches to operators or equipment during the assembly process, thereby improving safety.

[0009] As a preferred embodiment of this utility model, the coil tooth frame is provided with internal rivet points to ensure that the iron core layers of the coil tooth frame are firmly bonded.

[0010] As a preferred embodiment of this utility model, the reinforcing boss is provided with external rivet points to ensure that the core layers of the stator yoke are firmly bonded.

[0011] In a preferred embodiment of this invention, the inner ring of the stator is provided with several axially arranged hollow sections spaced apart between adjacent coil gear frames. This not only reduces the amount of material used in the stator core but also forms heat dissipation channels, allowing heat to dissipate more quickly, reducing the possibility of motor failure due to overheating, and improving the motor's operational stability and service life.

[0012] The beneficial effects of this utility model are as follows: The utility model has a reasonable structural design. The integrated molding design of the stator inner ring and several coil tooth frames not only positions and fixes each coil tooth frame, but also, through the cooperation of the locking and protrusions, enables the rapid assembly of all coil tooth frames with the stator yoke in a single assembly, greatly improving assembly efficiency. Furthermore, the thickened design at the connection point between the outer circumference of the stator inner ring and the coil tooth frame, as well as the widened assembly portion formed at the end of the coil tooth frame, further enhances the connection strength of the coil tooth frame, effectively improving the overall structural stability of the stator core and greatly reducing swaying caused by vibration.

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the main structure of the stator yoke ring in this utility model.

[0016] Figure 3 This is a schematic diagram of the main structure of the inner ring of the stator in this utility model.

[0017] Figure 4 This is a side view of the inner ring of the stator in this utility model. Detailed Implementation

[0018] See the example. Figures 1 to 4 This embodiment provides a toothed yoke-separated inlaid stator, which includes a stator yoke ring 1 and a stator inner ring 2.

[0019] The outer circumferential surface of the inner ring 2 of the stator is integrally formed with a plurality of coil tooth frames 3 arranged in a replicating circular array. In this embodiment, the number of coil tooth frames 3 is twelve.

[0020] The outer circumferential surface of the stator inner ring 2 is thickened at the connection position 21 with the coil tooth frame 3, and the end of the coil tooth frame 3 is widened to form an assembly part 31, effectively enhancing the connection structure strength of the coil tooth frame 3. Preferably, the corner of the assembly part 31 is provided with an arc-shaped chamfer 311 to avoid sharp edges causing scratches to operators or equipment during assembly, thus improving safety. A locking position 312 is provided in the middle of the assembly part 31, and a reinforcing boss 11 is provided on the inner circumferential surface of the stator yoke 1 corresponding to the position of the assembly part 31 of the coil tooth frame 3. The reinforcing boss 11 is provided with a protrusion 111 that matches the locking position 312. Preferably, the corner of the reinforcing boss 11 is provided with an arc-shaped notch 112 to avoid sharp corner protrusions 111, reduce space occupation, and also avoid damage to the coil during assembly. An internal riveting point 32 is provided on the coil tooth frame 3 to ensure that the iron core layers of the coil tooth frame 3 are firmly bonded. The reinforcing boss 11 is provided with external rivet points to ensure that the core layers of the stator yoke 1 are firmly bonded.

[0021] See Figure 4 Preferably, a plurality of axially arranged hollow portions 22 are provided at intervals between adjacent coil tooth frames 3 on the inner ring 2 of the stator. This not only reduces the amount of material used in the stator core but also forms a heat dissipation channel, allowing heat to dissipate more quickly, reducing the possibility of motor failure due to overheating, and improving the motor's operational stability and service life. Preferably, a long rivet is added to one of the outer rivet points of the assembly part 31. The portion of the long rivet extending beyond the surface of the stator yoke 1 forms a winding post. The lead copper wire of the coil winding on the coil tooth frame 3 can be wound around the winding post for positioning and extended along the winding post to facilitate subsequent assembly and wire bonding processes. Additionally, threaded grooves can be provided on the winding post to further facilitate the winding of the lead copper wire of the coil winding and prevent displacement or loosening.

[0022] During production, the coil tooth frames 3 on the inner stator ring 2 are pre-wound to form coil windings. Due to the integrated molding design of the inner stator ring 2 and several coil tooth frames 3, all coil tooth frames 3 can be quickly assembled with the stator yoke ring 1 in one assembly, greatly improving assembly efficiency. Through the cooperation of the inner stator ring 2 and the locking position 312 with the protrusion 111, the two ends of the coil tooth frames 3 are positioned and fixed, effectively improving the overall structural stability of the stator core and ensuring motor quality.

[0023] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model. As described in the above embodiments of this utility model, stator cores with other structures obtained using the same or similar structures are all within the protection scope of this utility model.

Claims

1. A toothed yoke-separated embedded stator, comprising a stator yoke ring, characterized in that, It also includes a stator inner ring, on the outer circumferential surface of which are integrally formed a plurality of coil tooth frames in a replicating circular array. The outer circumferential surface of the stator inner ring is thickened at the connection position with the coil tooth frames, and the ends of the coil tooth frames are widened to form an assembly part. A locking position is provided in the middle of the assembly part. A reinforcing boss is provided on the inner circumferential surface of the stator yoke corresponding to the assembly part of the coil tooth frames. The reinforcing boss has a protrusion that matches the locking position.

2. The split yoke, split wedge stator of claim 1 wherein: The corner of the reinforcing boss is provided with an arc-shaped notch.

3. The split yoke, inset stator of claim 1 wherein: The corners of the assembly part are provided with rounded chamfers.

4. The toothed yoke separated inlaid stator according to claim 1, characterized in that: The coil tooth frame is provided with internal rivet points.

5. The split yoke, inset stator of claim 1 wherein: The reinforcing boss is provided with external rivet points.

6. The split yoke, mosaic stator of any of claims 1-5, wherein: The inner ring of the stator has several hollowed-out sections arranged along the axial direction at intervals between adjacent coil gear frames.

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