An interlocked motor stator skeleton structure

Abstract

The utility model relates to motor stator framework related technical field, aims at providing a interlock formula motor stator framework structure. It includes: first skeleton and second skeleton, first skeleton and second skeleton are mutually opposite and insert and fit assembly, the fixedly established pair of insert and fit outer plate on first skeleton, the fixedly established pair of insert and fit inner plate corresponding with pair of insert and fit inner plate on second skeleton, pair of insert and fit inner plate and pair of insert and fit outer plate staggered arrangement and mutually opposite and insert and fit, the inner wall of pair of insert and fit outer plate is provided with female locking mouth groove, the outer wall of pair of insert and fit inner plate is fixed with the male locking buckle of female locking mouth groove adaptation, male locking buckle and female locking mouth groove locking cooperation. The utility model has the beneficial effects that: can eliminate the clearance between skeleton, avoid stator core bare, prevent resonance and slight movement wear.

Description

Technical Field

[0001] This utility model relates to the technical field of motor stator frames, and in particular to an interlocking motor stator frame structure. Background Technology

[0002] During the motor manufacturing process, insulating frames (also known as insulators or insulating frames) are usually installed at both ends of the stator core to achieve electrical insulation between the stator core and the winding coils, while also providing support and positioning for the windings.

[0003] Existing stator frame insulation is typically a split structure, with the first and second frames installed from opposite ends of the stator core. After installation, the first and second frames are flush-jointed, with the mating surfaces being flat. A certain distance must be maintained between the two frames after installation. This distance exposes the stator core surface, posing a risk of insulation breakdown. The gap between the first and second frames leaves this section of the stator core surface exposed, not covered by the insulation frame. The enameled wire of the winding coils passes near this area, with the exposed core surface very close to the enameled wire. During motor operation, especially under high-voltage conditions, insufficient insulation distance at this gap poses a risk of insulation breakdown, potentially leading to short-circuit failure. Furthermore, the two frames are not in complete contact, making them prone to resonance and fretting wear during operation. Because of the gap between the first and second frames, they are not in complete contact after installation. When the motor is running, the stator core is excited by electromagnetic force and vibrates. The two frames will have relatively small reciprocating motion between the stator core and the gap. Over long-term operation, fretting wear is likely to occur. At the same time, it will also have an adverse effect on the NVH (noise, vibration and harshness) performance of the motor, which manifests as abnormal noise and increased vibration.

[0004] In summary, there is a need for an interlocked motor stator frame structure that can eliminate gaps between the frame members, prevent stator core exposure, and suppress resonance and fretting wear. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, this utility model provides an interlocked motor stator frame structure, which can eliminate gaps between frames, avoid exposed stator core, and suppress resonance and fretting wear.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: An interlocking motor stator frame structure includes: a first frame and a second frame, the first frame and the second frame being interlocked and fitted together; an interlocking outer plate is fixedly provided on the first frame; an interlocking inner plate corresponding to the interlocking outer plate is fixedly provided on the second frame; the interlocking inner plate and the interlocking outer plate are staggered and interlocked together; a female locking groove is provided on the inner wall of the interlocking outer plate; a male locking buckle adapted to the female locking groove is fixedly provided on the outer wall of the interlocking inner plate; the male locking buckle and the female locking groove are locked together.

[0007] The first frame and the second frame are assembled from both ends of the stator core. The corresponding interlocking outer plate and interlocking inner plate are interlocked. The staggered interlocking plates form an overlapping fit. After the interlocking inner plate is inserted into the inner side of the interlocking outer plate, the male locking buckle on the outer wall of the interlocking inner plate is engaged with the female locking groove on the inner wall of the interlocking outer plate to complete the locking. This interlocking structure eliminates gaps in the frame assembly, preventing insulation withstand voltage risks. The first and second frames are interlocked and fitted together by interlocking outer and inner plates, and secured by male and female locking grooves, eliminating gaps in traditional structures. After assembly, the axial surface of the stator core is completely covered with no exposed areas. The enameled wire and stator core are effectively isolated by the frame, eliminating the insulation withstand voltage risks caused by exposed cores and improving the motor's insulation safety level. At the same time, the interlocking structure firmly locks the stator core, ensuring no axial gap between the first and second frames. The frame and stator core form a stable whole, avoiding the relative micro-movement problems of components caused by traditional gaps, suppressing micro-wear and abnormal noise under long-term operation. During motor operation, the frame can vibrate synchronously with the stator core, avoiding additional resonance, significantly improving the motor's NVH performance, and reducing abnormal vibration and noise.

[0008] Preferably, the interlocking outer plate and the interlocking inner plate are located on one side of the first frame and one side of the second frame, respectively. The interlocking inner plate is fixed on the other side of the first frame, and the interlocking outer plate corresponding to the interlocking inner plate is fixed on the other side of the second frame, forming a double-sided interlocking structure. By configuring mutually compatible interlocking outer plates and interlocking inner plates on both sides of the first frame and the second frame to form a double-sided interlocking structure, the interlocking reliability between the frames can be improved, the force on the single-sided locking position can be distributed, the tendency of the frame to loosen under vibration conditions can be further suppressed, and the overall structure's resistance to vibration fatigue can be enhanced.

[0009] Preferably, the first frame and the second frame are integrally injection molded using the same set of injection molds, and the structures of the first frame and the second frame are mirror images of each other. Integrating the first frame and the second frame using the same set of injection molds and being mirror images of each other reduces mold development costs, reduces the number of parts, facilitates production and material management, and ensures the interchangeability of the two frames, thus facilitating assembly operations.

[0010] Preferably, the interlocking outer plate and the interlocking inner plate have matching interlocking sections, which can be rectangular, trapezoidal, arc-shaped, or dovetail-shaped. The matching interlocking sections of the outer and inner plates, which can be rectangular, trapezoidal, arc-shaped, or dovetail-shaped depending on the actual working conditions, ensure smooth interlocking and assembly, and also provide different guiding, anti-circumferential deflection, or anti-disengagement effects through different cross-sectional configurations, thereby improving the interlocking positioning accuracy and structural stability.

[0011] Preferably, the male locking buckle is an elongated snap-fit ​​structure. The male locking buckle has a 30°–60° guide slope on one side facing the insertion direction, and a right-angle locking surface on the other side. The female locking groove is a groove structure adapted to the shape of the male locking buckle. The 30°–60° guide slope on the male locking buckle facilitates smooth insertion of the buckle into the female locking groove during assembly, reducing assembly resistance. The right-angle locking surface on the other side provides reliable axial positioning, preventing the locking buckle from dislodging from the groove due to vibration or external force, thus improving the stability of the locking mechanism.

[0012] The beneficial effects of this utility model are: eliminating gaps in the frame assembly and eliminating the risk of insulation withstand voltage; after assembly, the axial surface of the stator core is completely covered without any exposed areas, and the enameled wire and the stator core are effectively isolated by the frame, eliminating the insulation withstand voltage hazard caused by exposed core and improving the insulation safety level of the motor; avoiding the problem of relative micro-motion of components caused by traditional gaps, suppressing micro-motion wear and abnormal noise under long-term operation, and allowing the frame to vibrate synchronously with the stator core during motor operation, avoiding additional resonance, significantly improving the NVH performance of the motor, and reducing abnormal vibration and noise; enhancing the overall structure's resistance to vibration fatigue; reducing mold development costs, reducing the types of components, and facilitating production and material management; improving the fitting positioning accuracy and structural stability; and improving the stability of the snap-locking mechanism. Attached Figure Description

[0013] Figure 1 This is a perspective view of the present invention; Figure 2 This is an exploded view of this utility model.

[0014] In the diagram: 1. First frame, 2. Second frame, 3. Interlocking outer plate, 4. Interlocking inner plate, 5. Female lock stop groove, 6. Male lock catch, 7. Iron core mating surface, 8. Busbar positioning groove, 9. Phase wire groove, 10. Enamelled wire positioning groove. Detailed Implementation

[0015] The present application will be further described below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are merely some embodiments of the present application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and does not constitute any limitation on the present application or its application or use. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort fall within the protection scope of this application.

[0016] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary manner according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms “comprising” and / or “including” are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0017] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of this specification. Any specific values ​​in the examples shown and discussed herein should be interpreted as merely exemplary and not as limitations. Therefore, other exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0018] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application.

[0019] like Figure 1 and Figure 2In the embodiments described, an interlocking motor stator frame structure includes: a first frame 1 and a second frame 2, the first frame 1 and the second frame 2 being assembled by interlocking and fitting together; an interlocking and fitting outer plate 3 is fixed on the first frame 1; an interlocking and fitting inner plate 4 corresponding to the interlocking and fitting outer plate 3 is fixed on the second frame 2; the interlocking and fitting inner plate 4 and the interlocking and fitting outer plate 3 are staggered and interlocked and fitted together; a female locking groove 5 is provided on the inner wall of the interlocking and fitting outer plate 3; a male locking buckle 6 adapted to the female locking groove 5 is fixed on the outer wall of the interlocking and fitting inner plate 4; the male locking buckle 6 and the female locking groove 5 are locked together.

[0020] The stator frame structure is provided with a core contact surface 7, a busbar positioning groove 8, a phase wire groove 9, and an enameled wire positioning groove 10. The core contact surface 7 is used to fit tightly with the end face of the stator core to ensure the positioning accuracy of the frame assembly; the busbar positioning groove 8 is used to place and limit the busbar to prevent the busbar from shifting or shaking; the phase wire groove 9 is used to separate different phase windings to achieve phase-to-phase insulation isolation; and the enameled wire positioning groove 10 is used to accommodate and organize the enameled wire to prevent the enameled wire from shifting or rubbing against each other and getting damaged.

[0021] The interlocking outer plate 3 and the interlocking inner plate 4 are located on one side of the first frame 1 and one side of the second frame 2, respectively. The interlocking inner plate 4 is fixed on the other side of the first frame 1, and the interlocking outer plate 3 corresponding to the interlocking inner plate 4 is fixed on the other side of the second frame 2, forming a double-sided interlocking structure.

[0022] The first frame 1 and the second frame 2 are integrally injection molded from the same set of injection molds, and the structures of the first frame 1 and the second frame 2 are mirror images of each other.

[0023] The interlocking outer plate 3 and the interlocking inner plate 4 have matching interlocking sections, which can be any one of rectangular, trapezoidal, arc-shaped or dovetail-shaped.

[0024] The male lock stop 6 is a long strip-shaped buckle structure. The male lock stop 6 has a 45° guide slope on one side facing the insertion and mating direction, and the other side of the male lock stop 6 is a right-angle locking surface. The female lock stop groove 5 is a groove structure that matches the shape of the male lock stop 6.

[0025] During assembly, the first frame 1 and the second frame 2 are placed at opposite ends of the stator core along the axial direction. They are pushed towards each other, causing the inner interlocking plate 4 to slide along the guide slope into the inner side of the outer interlocking plate 3. The male locking buckle 6 undergoes slight deformation under pressure until it is fully engaged in the female locking groove 5, achieving axial limiting and locking through the right-angle locking surface. The double-sided outer interlocking plate 3 and the inner interlocking plate 4 simultaneously complete the interlocking fit, forming a double-sided interlocking structure, eliminating the axial assembly gap between the first frame 1 and the second frame 2. After assembly, the axial end face of the stator core is completely covered by the frame. Rectangular, trapezoidal, arc-shaped, or dovetail-shaped interlocking sections can be selected according to the motor's operating conditions to achieve different levels of circumferential limiting and anti-detachment effects. The mirror-symmetrically arranged first frame 1 and second frame 2 can be interchanged for assembly, simplifying parts management and manufacturing processes.

[0026] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An interlocked motor stator frame structure, characterized in that, include: The first frame (1) and the second frame (2) are assembled by interlocking. The first frame (1) is fixed with an interlocking outer plate (3), and the second frame (2) is fixed with an interlocking inner plate (4) corresponding to the interlocking outer plate (3). The interlocking inner plate (4) and the interlocking outer plate (3) are staggered and interlocked. The inner wall of the interlocking outer plate (3) is provided with a female locking groove (5). The outer wall of the interlocking inner plate (4) is fixed with a male locking buckle (6) that matches the female locking groove (5). The male locking buckle (6) locks with the female locking groove (5).

2. The interlocking motor stator frame structure according to claim 1, characterized in that, The interlocking outer plate (3) and the interlocking inner plate (4) are located on one side of the first frame (1) and one side of the second frame (2), respectively. The interlocking inner plate (4) is fixed on the other side of the first frame (1), and the interlocking outer plate (3) corresponding to the interlocking inner plate (4) is fixed on the other side of the second frame (2), forming a double-sided interlocking structure.

3. The interlocking motor stator frame structure according to claim 2, characterized in that, The first skeleton (1) and the second skeleton (2) are integrally injection molded by the same set of injection molds, and the structures of the first skeleton (1) and the second skeleton (2) are mirror images of each other.

4. The interlocked motor stator frame structure according to claim 3, characterized in that, The interlocking outer plate (3) and the interlocking inner plate (4) have matching cross sections, and the interlocking cross sections are any one of rectangular, trapezoidal, arc-shaped or dovetail-shaped.

5. An interlocking motor stator frame structure according to any one of claims 1-4, characterized in that, The male lock stop (6) is a long strip-shaped buckle structure. The male lock stop (6) has a 30° to 60° guide slope on one side facing the insertion and mating direction. The other side of the male lock stop (6) is a right-angle locking surface. The female lock stop groove (5) is a groove structure that matches the shape of the male lock stop (6).

Images