Stator mechanism and motor
By setting limiting grooves on the coil frame of the stator mechanism to accommodate insulating components, the problem of insufficient creepage distance between conductive coils and iron core components and adjacent coils is solved, thereby improving insulation strength and reducing processing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-03
- Publication Date
- 2026-03-27
AI Technical Summary
In existing stator mechanisms, the creepage distance between the conductive coils and the core components, as well as between adjacent coils, is insufficient, resulting in substandard insulation strength, especially in high-voltage motors.
A first groove is set on the coil frame to form a limiting groove to accommodate the insulating component, thereby increasing the creepage distance between the conductive coil and the iron core and adjacent coils. The insulation strength is improved by the locking and stability of the limiting groove of the insulating component.
While ensuring a thin coil frame and high slot fill factor, the creepage distance between the conductive coil and the core components and adjacent coils is increased, thereby improving the insulation strength of the stator mechanism, simplifying the processing difficulty and reducing costs.
Smart Images
Figure CN224053957U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of motor, especially a stator mechanism and motor. BACKGROUND
[0002] When designing the stator mechanism, the electrical insulation strength between the conductive coil and the core piece and between the two adjacent conductive coils needs to be ensured, and the creepage distance of the corresponding parts needs to be met before designing the structure. In the slot opening part, the creepage distance between the conductive coil and the core piece and between the two conductive coils is relatively long, and the insulation requirement is easily met in design.
[0003] Due to the arrangement of the coils, the distance between the two adjacent coils is relatively close at the slot bottom. In addition, the conductive coil and the core are only separated by the coil framework, and the insulation structure design of the bottom of the winding slot is difficult, especially for high-voltage motors, and the problem of insufficient creepage distance and insufficient insulation strength is prone to occur. UTILITY MODEL CONTENT
[0004] The utility model aims at improving the problem of insufficient creepage distance and insufficient insulation strength of the existing motor, and provides a stator mechanism and motor.
[0005] The technical scheme for achieving the above-mentioned purpose includes the following:
[0006] The stator mechanism includes a plurality of winding structures, and the plurality of winding structures are spliced and surrounded to form a ring-shaped stator mechanism. The winding structure includes a core piece, a coil framework, and an insulation piece. The first end of the core piece has a winding slot.
[0007] The coil framework is sleeved on the first end of the core piece, and the second end of the core piece has a first recess. In the stator mechanism, the openings of the two first recesses on the adjacent two coil frameworks are oppositely arranged, and the two first recesses are communicated to form a limiting slot. The limiting slot is arranged at the bottom of the winding slot, and the insulation piece is arranged between the two coil frameworks. One end of the insulation piece is clamped in the limiting slot.
[0008] In one embodiment, the second end of the core piece has a second recess, and the coil framework includes an insulation support part, a limiting part, and an insulation body. The cross-sectional shape of the insulation support part corresponds to that of the second recess, and the insulation support part is installed in the second recess.
[0009] The insulation support part and the limiting part are installed at the same end of the insulation body, and the first recess is formed between the insulation support part and the limiting part.
[0010] In one of the embodiments, the insulating piece comprises an insulating paper and an insulating rod, one end of the insulating paper is fixed with the insulating rod, the shape of the insulating rod corresponds to the shape of the limiting groove, and the insulating rod is arranged in the limiting groove.
[0011] In one of the embodiments, the insulating paper comprises a main body part, one end of the main body part is bent to form an adhesive part and a sleeving part, the sleeving part is sleeved outside the insulating rod, and the adhesive part is bonded with the main body part.
[0012] In one of the embodiments, the insulating rod comprises a main rod and two abutting heads, the outer diameter of the abutting head is larger than the outer diameter of the main rod, the two abutting heads are installed at the two ends of the main rod, the sleeving part is sleeved outside the main rod, and the abutting head is used for abutting with the end of the sleeving part.
[0013] In one of the embodiments, a conductive coil is further included, the conductive coil is sleeved outside the coil framework and located in the winding groove.
[0014] The conductive coil is formed by winding a wire on the coil framework.
[0015] In one of the embodiments, the iron core piece comprises a splicing body, a support body and a limiting body, the splicing body is connected with the first end of the support body, and the second end of the support body is connected with the limiting body.
[0016] The width of the support body is smaller than the width of the splicing body and the limiting body, and the winding groove is formed between the side walls of the support body, the splicing body and the limiting body.
[0017] In one of the embodiments, the splicing body gradually increases along the radial direction of the stator mechanism, and the adjacent two splicing bodies are fixedly connected.
[0018] In one of the embodiments, in the two winding structures, the gap is formed between the adjacent two coil frameworks, at least part of the insulating piece is located in the gap, and the outer wall of the insulating piece abuts with the two coil frameworks.
[0019] The utility model also provides a motor, its characterized in that, including above-mentioned stator mechanism.
[0020] The technical scheme provided by the utility model has the following advantages and effects:
[0021] On the one hand, the first grooves are arranged on the coil framework, the adjacent two first grooves are connected to form the limiting groove, one end of the insulating piece is used for clamping the limiting groove, the insulating piece is used for separating the adjacent two coil frameworks, the limiting groove is used for limiting the position of the insulating piece between the two coil frameworks, the stability of the insulating piece is improved, and the movement of the insulating piece is avoided to cause the adjacent two conductive coils to meet the design specification in the creepage distance.
[0022] On the other hand, in two adjacent conductive coils, the bottoms of the two conductive coils are insulated by arranging an insulating piece, one end of the insulating piece is arranged in a limiting groove, and the creepage distance between the conductive coil and the core piece is a+b+C R +d; the creepage distance between the bottoms of two adjacent conductive coils is 2*(a+b+C R +d). Therefore, by arranging the first recess on the bottom of the coil framework, the two coil frameworks form the limiting groove accommodating one end of the insulating piece after splicing, in the case of ensuring that the thickness of the coil framework is thin and the space distance between the two adjacent conductive coils is close, that is, the slot fill rate of the conductive coil in the winding groove is high, the creepage distance between the conductive coil and the core piece and the creepage distance between the two adjacent conductive coils can be designed to be large, thereby increasing the insulation strength of the stator mechanism. BRIEF DESCRIPTION OF DRAWINGS
[0023] The drawings herein show specific examples of the technical solutions of the present application, and constitute part of the specification together with the specific embodiments, for explaining the technical solutions, principles and effects of the present application.
[0024] Unless specifically stated or defined otherwise, the same reference signs in different drawings represent the same or similar technical features, and different reference signs may also be used to represent the same or similar technical features.
[0025] Figure 1 is a schematic view of a stator mechanism in an embodiment of the present application;
[0026] Figure 2 is a schematic view of a winding structure in an embodiment of the present application;
[0027] Figure 3 is a schematic view of a core piece in an embodiment of the present application;
[0028] Figure 4 is a schematic view of two core pieces spliced in an embodiment of the present application;
[0029] Figure 5 is a schematic view of two winding structures spliced in an embodiment of the present application;
[0030] Figure 6 is a sectional view of two winding structures spliced in an embodiment of the present application;
[0031] Figure 7 is an enlarged view of A in Figure 6 an embodiment of the present application;
[0032] Figure 8 is an insulating schematic view of a conductive coil in an embodiment of the present application;
[0033] Figure 9 is a schematic view of the insulating paper in an embodiment of the utility model;
[0034] Figure 10 is a schematic view of the insulating rod in an embodiment of the utility model;
[0035] Mark explanation:
[0036] 100, winding structure;1, core piece;11, spliced body;12, support body;13, limiting body;101, second recess;102, accommodating groove;103, winding groove;104, gap;2, coil skeleton;21, insulating support part;22, limiting part;23, insulating body;24, first recess;3, conductive coil;40, insulating piece;4, insulating paper;41, main body part;42, bonding part;43, sleeving part;5, insulating rod;51, main rod;52, abutting head;200, stator mechanism. Specific implementation
[0037] In order to facilitate understanding of the utility model, the specific embodiments of the utility model will be described in more detail below with reference to the drawings of the specification.
[0038] Unless specifically stated or defined otherwise, the "first, second" used in this paper is only used for the differentiation of name, and does not represent the specific quantity or order.
[0039] Unless specifically stated or defined otherwise, the term "and / or" used in this paper includes any and all combinations of one or more related listed items.
[0040] It should be noted that when an element is considered "fixed to" another element, it can be directly fixed to another element, or a central element can exist;When an element is considered "connected" to another element, it can be directly connected to another element, or a central element can exist;When an element is considered "mounted on" another element, it can be directly mounted on another element, or a central element can exist. When an element is considered "provided on" another element, it can be directly provided on another element, or a central element can exist.
[0041] The utility model proposes a kind of stator mechanism 200, such as Figures 1 to 7As shown, the stator mechanism 200 comprises a plurality of winding structures 100 which are spliced and surrounded to form a ring-shaped stator mechanism 200; the winding structure 100 comprises a core piece 1, a coil former 2, and an insulation piece 40, the upper and lower end faces of the first end of the core piece 1 are inwardly recessed and form upper and lower distributed winding grooves 103; the coil former 2 is sleeved on the first end of the core piece 1, and the coil former 2 has a first recess 24 near the second end of the core piece 1; in the stator mechanism 200, the openings of the two first recesses 24 on the two adjacent coil formers 2 are oppositely arranged, and the two first recesses 24 are connected to form a limiting groove, the limiting groove is arranged at the bottom of the winding groove 103, and the insulation piece 40 is arranged between the two coil formers 2, and one end of the insulation piece 40 is clamped in the limiting groove.
[0042] Specifically, by arranging the first recess 24 on the coil former 2, the two adjacent first recesses 24 are connected to form a limiting groove, one end of the insulation piece 40 is used for clamping the limiting groove, the insulation piece 40 is used to separate the two adjacent coil formers 2, and the limiting groove is used to limit the position of the insulation piece 40 between the two coil formers 2, thereby improving the stability of the insulation piece 40 and avoiding the movement of the insulation piece 40 causing the creepage distance between the two adjacent conductive coils 3 to fail to meet the design specification.
[0043] Further, as shown in Figure 7 and Figure 8 , of the two adjacent conductive coils 3, the bottom of the two conductive coils 3 is separated by the insulation piece 40, one end of the insulation piece 40 is arranged in the limiting groove, and the creepage distance between the conductive coil 3 and the core piece 1 is a+b+C R +d; the creepage distance between the bottoms of the two adjacent conductive coils 3 is 2*(a+b+C R +d). Therefore, by opening the first recess 24 at the bottom of the coil former 2, the two coil formers 2 form a limiting groove accommodating one end of the insulation piece 40 after splicing, and in the case of ensuring that the thickness of the coil former 2 is relatively thin and the space distance between the two adjacent conductive coils 3 is relatively close, i.e. in the case of setting a relatively high slot fill rate of the conductive coil 3 in the winding groove 103, the creepage distances between the conductive coil 3 and the core piece 1 and between the two adjacent conductive coils 3 can still be designed to be relatively large, thereby increasing the insulation strength of the stator mechanism 200.
[0044] Further, the first recess 24 is increased on both sides of the coil former 2, which is relatively low in processing difficulty. As shown in Figure 7 , the first recess 24 is located at the end of the coil former 2, and this shape only needs to accommodate one end of the insulation piece 40, and the specific shape can be set as needed without particular limitation, without the need to specially change the main structure of the coil former 2, and there is no difficulty in the injection molding process. The stator mechanism 200 designed in this way meets the functional requirements while being simple in structure and reducing the processing cost.
[0045] Further, the first grooves 24 are added to the bottom of both sides of the coil former 2, which does not increase the space distance between the two conductive coils 3 in design, nor reduces the slot fill rate of the conductive coils 3 in the winding slot 103, and the utilization rate of electrical materials is ensured.
[0046] In some embodiments, the second end of the core piece 1 has a second groove 101, the coil former 2 includes an insulating support part 21, a limiting part 22, and an insulating body 23, the insulating support part 21 corresponds to the cross-sectional shape of the second groove 101, and the insulating support part 21 is installed in the second groove 101; the insulating support part 21 and the limiting part 22 are installed at the same end of the insulating body 23, and the first groove 24 is formed between the insulating support part 21 and the limiting part 22. Specifically, after the two core pieces 1 are spliced, the two second grooves 101 form a containing groove 102 for accommodating the two adjacent insulating support parts 21, the outer wall of the insulating support part 21 is attached to the inner wall of the second groove 101, the insulating support part 21 is arc-shaped, and the insulating support part 21 and the limiting part 22 are arranged at the same end of the insulating body 23. When the two adjacent coil formers 2 are spliced, the two limiting parts 22 correspond to each other, and the two insulating support parts 21 correspond to each other, forming a circular limiting groove.
[0047] Preferably, the limiting groove is circular, the insulating part 40 includes an insulating paper 4 and an insulating rod 5, one end of the insulating paper 4 is fixed to the insulating rod 5, the shape of the insulating rod 5 corresponds to the shape of the limiting groove, and the insulating rod 5 is arranged in the limiting groove. Specifically, the insulating rod 5 is used to be placed in the limiting groove, the first end of the insulating paper 4 is used to be sleeved outside the insulating rod 5, and the insulating paper 4 is fixed between the two adjacent conductive coils 3 through the insulating rod 5, further stabilizing the creepage distance of the adjacent conductive coils 3.
[0048] Preferably, as shown in Figure 9 Specifically, the insulating paper 4 is fixed by mechanical cooperation and glue during installation, without the need for a varnishing process for the winding structure 100, and cooperates with the processing technology of the self-adhesive enameled wire designated stator mechanism 200, saving the varnishing process of the stator mechanism 200. This saves process cost and improves production efficiency, and also improves the production environment and reduces waste emissions. In addition, the material used by the insulating paper 4 is the most widely used and most common in the current motor industry, which is conducive to material procurement and mass production.
[0049] Preferably, as shown in Figure 10As shown, the insulating rod 5 includes a main rod 51 and two abutment joints 52. The outer diameter of the abutment joints 52 is larger than the outer diameter of the main rod 51. The two abutment joints 52 are installed at both ends of the main rod 51. The sleeve part 43 is sleeved on the outside of the main rod 51, and the abutment joints 52 are used to abut against the ends of the sleeve part 43. Specifically, in the axial direction of the stator mechanism 200, the two abutment joints 52 are used to abut against the two ends of the iron core 1, restricting the movement of the main rod 51 in the limiting groove, and further improving the stability of the insulating rod 5 in the limiting groove.
[0050] Preferred, such as Figure 6 As shown, the stator mechanism 200 also includes a conductive coil 3, which is sleeved outside the coil frame 2 and located within the winding groove 103; the conductive coil 3 is formed by winding a wire around the coil frame 2. Specifically, the wire is wound around the coil frame 2 to form the conductive coil 3, which is located in the winding grooves 103 distributed vertically on the iron core 1.
[0051] Preferred, such as Figure 3 As shown, the core component 1 includes a splicing body 11, a support body 12, and a limiting body 13. The splicing body 11 is connected to the first end of the support body 12, and the second end of the support body 12 is connected to the limiting body 13. The width of the support body 12 is smaller than the width of the splicing body 11 and the limiting body 13, and a winding groove 103 is formed between the side walls of the support body 12, the splicing body 11, and the limiting body 13. Specifically, the splicing body 11, the support body 12, and the limiting body 13 are an integral structure. The width of the support body 12 is smaller than the width of the splicing body 11 and the limiting body 13, so that a winding groove 103 is formed on the core component 1. When the conductive coil 3 is placed in the winding groove 103, the splicing body 11 and the limiting body 13 limit the conductive coil 3, thereby improving the stability of the conductive coil 3 in the winding groove 103.
[0052] Preferred, such as Figure 4 As shown, the splicing body 11 gradually increases in size along the radial direction of the stator mechanism 200, and two adjacent splicing bodies 11 are fixedly connected. Specifically, the splicing body 11 gradually increases in size along the radial direction of the stator mechanism 200, making the splicing body 11 fan-shaped, thereby improving the fit between two adjacent splicing bodies 11.
[0053] Preferred, such as Figure 5 and Figure 6 As shown, in the two winding structures 100, there is a gap 104 between two adjacent coil frames 2. At least a portion of the insulator 40 is located within the gap 104, and the outer wall of the insulator 40 abuts against the two coil frames 2. Specifically, this gap 104 allows the other end of the insulator 40 to pass through, so that the outer wall of the insulator 40 is abutted against by the two coil frames 2, and both ends of the insulator 40 can be fixed, further improving the stability of the insulator 40 between the two coil frames 2.
[0054] The utility model discloses still propose a kind of motor, including the stator mechanism 200 as above. Specifically, by applying stator mechanism 200 in motor, the creepage distance between two adjacent conductive coils 3 is increased by insulating part 40, the insulation strength of stator mechanism 200 is increased, further illustrate that the stator mechanism 200 is suitable for motor in higher insulation requirement.
[0055] When referring to the drawings, new features are described; in order to avoid the description not being simple enough due to repeated reference to the drawings, the features that have been described are not referred to the drawings again under the condition of clear expression.
[0056] The purpose of the above examples is to exemplarily reproduce and deduce the technical solutions of the utility model, and to completely describe the technical solutions, purposes and effects of the utility model, so as to make the public understand the disclosure of the utility model more thoroughly and comprehensively, and not to limit the protection scope of the utility model.
[0057] The above examples are not exhaustive enumeration based on the utility model, and there can be multiple other implementation manners not listed. Any replacement and improvement made without violating the concept of the utility model belongs to the protection scope of the utility model.
Claims
1. A stator mechanism, characterized by, The winding structure comprises a core piece, a coil framework and an insulation piece, the first end of the core piece is provided with a winding slot; The coil framework is sleeved on the first end of the core piece, the coil framework is provided with a first recess near the second end of the core piece, the openings of the two first recesses on the adjacent two coil frameworks are oppositely arranged in the stator mechanism, and the two first recesses are communicated to form a limiting slot, the limiting slot is arranged at the bottom of the winding slot, and the insulation piece is arranged between the two coil frameworks and is clamped at one end with the limiting slot.
2. The stator mechanism of claim 1, wherein, The second end of the core piece is provided with a second recess, the coil framework comprises an insulation support part, a limiting part and an insulation body, the insulation support part corresponds to the sectional shape of the second recess, and the insulation support part is installed in the second recess; The insulation support part and the limiting part are installed at the same end of the insulation body, and the first recess is formed between the insulation support part and the limiting part.
3. The stator mechanism of claim 2, wherein, The insulation piece comprises insulation paper and an insulation rod, one end of the insulation paper is fixed with the insulation rod, the shape of the insulation rod corresponds to the shape of the limiting slot, and the insulation rod is arranged in the limiting slot.
4. The stator mechanism of claim 3, wherein, The insulation paper comprises a main body part, one end of the main body part is bent to form a bonding part and a sleeving part, the sleeving part is sleeved outside the insulation rod, and the bonding part is bonded with the main body part.
5. The stator mechanism of claim 4, wherein, The insulation rod comprises a main rod and two abutting heads, the outer diameter of the abutting head is greater than the outer diameter of the main rod, the two abutting heads are installed at the two ends of the main rod, the sleeving part is sleeved outside the main rod, and the abutting head is used for abutting with the end of the sleeving part.
6. The stator mechanism according to any one of claims 1 to 5, characterized by The conductive coil is sleeved outside the coil framework and located in the winding slot. The conductive coil is formed by winding a conductive wire on the coil framework.
7. The stator mechanism according to any one of claims 1 to 5, wherein The core piece comprises a splicing body, a support body and a limiting body, the first end of the support body is connected with the splicing body, and the second end of the support body is connected with the limiting body. The width of the support body is smaller than the widths of the splicing body and the limiting body, and the winding slot is formed between the side walls of the support body, the splicing body and the limiting body.
8. The stator mechanism of claim 7, wherein, The splicing body gradually increases along the radial direction of the stator mechanism, and the adjacent two splicing bodies are fixedly connected.
9. The stator mechanism of claim 7, wherein, In the two winding structures, the adjacent two coil frameworks have a gap, at least part of the insulation piece is located in the gap, and the outer wall of the insulation piece abuts against the two coil frameworks.
10. An electric machine characterized by The stator mechanism comprises any one of claims 1 to 9.