Insulation structure, outer rotor motor iron core and outer rotor motor
By designing an integrally formed insulation structure on the outer rotor motor core, including an inner insulation ring, an outer insulation post, and an inner retaining ring, and setting outer and inner wire-blocking posts, the protection problem of the winding coil during production and transportation is solved, and the insulation level is improved, especially the insulation performance of the casing leakage current, phase-to-phase and turn-to-turn.
Patent Information
- Application Number
- CN202421628624.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-10
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2034-07-10
AI Technical Summary
The insulation structure of the existing external rotor motor core cannot effectively protect the winding coils from compression and friction during production and transportation, and the insulation level is not high, especially the leakage current of the casing and the insufficient insulation levels between phases and between turns.
It adopts an integrated insulation structure, including an inner insulation ring, an outer insulation post, an outer anti-collision ring, and an inner retaining ring. It is equipped with outer and inner wire-blocking posts. The inner wire-blocking posts with different heights are designed to limit the winding coil, ensure concentric installation and prevent friction, and improve the insulation level.
It effectively protects the winding coils from compression and friction, improves the insulation level of the external rotor motor, especially the insulation performance between the casing, phases and turns, prevents the winding coils from coming off and rubbing against the iron core, and enhances the overall insulation performance of the motor.
Smart Images
Figure CN223785836U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of driving motor, specifically relates to an insulation structure, and the utility model is also related to the outer rotor motor core and outer rotor motor adopting the insulation structure. BACKGROUND
[0002] Since the permanent magnet variable frequency brushless motor saves electricity by about 30% relative to the traditional motor, the permanent magnet variable frequency brushless motor is continuously applied in various fields (especially industrial motors in recent years). Since most industrial motors use 220V and 380V high-voltage input, the stability requirements of the coil on various insulation levels and consistency are higher. In order to promote the application of the outer rotor permanent magnet motor in a larger range in the future, upgrading the insulation protection ring is particularly important.
[0003] The existing outer rotor motor core adopts a simple insulation mode of adding a plastic sheet on a silicon steel sheet, adding an injection molded insulation ring on a support edge, and combining two same shapes into one, and is inlaid and installed on the core and the support, so as to realize the insulation of the outer rotor motor core. However, the insulation structure causes the existing outer rotor motor to have the following defects:
[0004] Firstly, the outer rotor motor core adopts a plastic sheet or an injection molded insulation ring added on a silicon steel sheet, and cannot well protect the extrusion of the winding on the two exposed coils and the abrasion of the enameled wire during production and transportation; secondly, the shell has low leakage insulation level, phase-to-phase insulation level, and turn-to-turn insulation level.
[0005] In view of the above, the applicant hopes to improve the above technical problems by seeking a technical solution. SUMMARY
[0006] Therefore, the utility model discloses the purpose of providing an insulation structure, an outer rotor motor core and an outer rotor motor, protecting the winding coil at the end of the outer rotor motor core from being extruded and rubbed, avoiding the outer rotor motor from being scratched during transportation, and effectively limiting the winding of the motor by the outer blocking column and the inner blocking column structure of the insulation structure, preventing the winding coil from coming out and avoiding friction with the outer rotor motor core, so that the insulation level of the outer rotor motor is obviously improved.
[0007] The technical scheme adopted by the utility model is as follows:
[0008] An insulation structure is correspondingly attached to the end of an outer rotor motor core, the insulation structure adopts an integrated structure, and comprises an inner insulation ring and a plurality of spaced outer insulation columns extending radially along the outer peripheral wall surface of the inner insulation ring; wherein,
[0009] The inner insulation ring located on the outer side is provided with an outer anti-collision ring extending outward, and the end face of the outer anti-collision ring is convex along the outer side face of the outer insulation column.
[0010] The inner insulation ring located at the inner side is provided with an inner clamping ring clamped into the inner ring of the outer rotor motor core, for ensuring that the insulation structure is concentrically arranged with the outer rotor motor core.
[0011] The outer end of the outer insulation column and the connecting end connected with the inner insulation ring are respectively provided with an outer blocking line column and an inner blocking line column.
[0012] Preferably, the outer blocking line column and the inner blocking line column are both located at the outer side of the outer insulation column and protrude outward along the outer side of the outer insulation column.
[0013] Preferably, the inner blocking line column comprises an inner blocking line column A unit, an inner blocking line column B unit and an inner blocking line column C unit; wherein the heights of the inner blocking line column A unit, the inner blocking line column B unit and the inner blocking line column C unit are not equal.
[0014] Preferably, the height of the inner blocking line column B unit is greater than the height of the inner blocking line column A unit and less than the height of the inner blocking line column C unit.
[0015] Preferably, the difference between the height of the inner blocking line column B unit and the height of the inner blocking line column A unit is 0.8-1.2mm; and / or the difference between the height of the inner blocking line column B unit and the height of the inner blocking line column C unit is 0.8-1.2mm.
[0016] Preferably, the inner side of the inner insulation ring is provided with a winding connection head clamping site for limiting effect when the three-phase winding of the outer rotor motor is connected in parallel.
[0017] Preferably, the outer anti-collision ring is provided with an opening for winding wire and a clamping hole for positioning when the winding wire is fed.
[0018] Preferably, the outer anti-collision ring is provided with a notch for marking the winding start position.
[0019] Preferably, an outer rotor motor core adopts the insulation structure according to the above.
[0020] Preferably, an outer rotor motor adopts the outer rotor motor core according to the above.
[0021] The utility model discloses an insulation structure of outer rotor motor iron core, which is characterized by the following technical scheme: an inner insulation ring is provided as a base body, and an outer insulation column, an outer anti-collision ring and an inner clamping ring are arranged on the inner insulation ring respectively.
[0022] Further, the application also proposes the structure design of the inner blocking line column A unit, the inner blocking line column B unit and the inner blocking line column C unit with different heights, realizes the distance between the open cross line phase and the phase line (avoids the cross lamination between the phase lines), and further improves the withstand voltage level between the motor phases. BRIEF DESCRIPTION OF DRAWINGS
[0023] Figure 1 is the structure diagram of the insulation structure of the outer rotor motor iron core (showing the outer side) of the utility model;
[0024] Figure 2 is Figure 1 front view of the utility model;
[0025] Figure 3 is the inner side perspective view of the insulation structure of the outer rotor motor iron core of the utility model (showing the inner side);
[0026] Reference signs: inner insulation ring 0; outer insulation column 1; outer anti-collision ring 2; inner clamping ring 3; outer blocking line column 4; inner blocking line column 5; inner blocking line column A unit 5a; inner blocking line column B unit 5b; inner blocking line column C unit 5c; winding head clamping position 6; opening 7; bayonet 8; notch 9. DETAILED DESCRIPTION
[0027] The utility model discloses an insulation structure, is correspondingly laminated and is arranged at the end of outer rotor motor iron core, and the insulation structure adopts integrated structure, and the insulation structure includes inner insulation ring and the several interval distribution of radial extension along the outer peripheral wall surface of inner insulation ring outer insulation column; wherein, the inner insulation ring of outer side is equipped with the outer anti-collision ring of extending to the outer side, and the end surface of outer anti-collision ring is protruding along the outer side of outer insulation column; The inner insulation ring of inner side is equipped with inner clamping ring, and the inner clamping ring is clamped into the inner ring of outer rotor motor iron core, is used for ensuring that the insulation structure and outer rotor motor iron core realize concentric installation setting, and the outer end of outer insulation column and the connecting end of being connected with inner insulation ring are equipped with outer blocking line column and inner blocking line column respectively.
[0028] In order to make the person skilled in the art better understand the technical scheme in the present application, the technical scheme in the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the protection scope of the present application.
[0029] Please refer to Figure 1 , Figure 2 and Figure 3 shown, a kind of insulation structure is correspondingly attached to the end of outer rotor motor core, insulation structure adopts integrated structure (using high-performance insulation material one-time injection molding), including inner insulation ring 0 and the radially extending several interval distribution outer insulation column 1 along the outer circumferential wall surface of inner insulation ring 0;Wherein, the inner insulation ring 0 located at the outside is provided with the outer anti-collision ring 2 extending to the outside, and the end face of outer anti-collision ring 2 is convex along the outside of outer insulation column 1;The inner insulation ring 0 located at the inside is provided with inner collar 3, and inner collar 3 is clamped into the inner ring of outer rotor motor core, for ensuring that insulation structure and outer rotor motor core are concentrically installed;The outer end of outer insulation column 1 and the connecting end part connected with inner insulation ring 0 are respectively provided with outer blocking line column 4 and inner blocking line column 5;Preferably, in the present embodiment, outer blocking line column 4 and inner blocking line column 5 are located at the outside of outer insulation column 1, and are convex outward along the outside of outer insulation column 1.
[0030] The present embodiment limits the winding coil to a reasonable distance from the groove bottom or groove of outer rotor motor core by setting outer blocking line column 4 and inner blocking line column 5, to prevent the process of winding the enameled wire tightly and bending from deforming the insulation paper;Moreover, since the groove bottom and groove of outer rotor motor core are not easy to be chamfered, the structure design of outer blocking line column 4 and inner blocking line column 5 in the present embodiment can prevent the winding coil from being wound too tightly with the R angle of groove bottom and groove, so as to cause the damage of motor winding insulation performance and provide convenient, safe and reasonable space for the later process of slotting wedge.
[0031] Preferably, in the present embodiment, the outer rotor motor core includes three-phase winding, and inner blocking line column 5 includes inner blocking line column A unit 5a, inner blocking line column B unit 5b and inner blocking line column C unit 5c;Wherein, the height of inner blocking line column A unit 5a, inner blocking line column B unit 5b and inner blocking line column C unit 5c are not equal;Through the structure design, the cross-line of three-phase winding coil can be limited at three different heights (the cross-line height limit is integrated with the "phase line radial inner blocking column"), and the cross-line of three-phase winding coil is at different heights respectively, avoiding the cross contact between different phase lines.
[0032] Further preferably, in the present embodiment, the height of the inner barrier wire post B unit 5b is greater than the height of the inner barrier wire post A unit 5a and less than the height of the inner barrier wire post C unit 5c; still further preferably, in the present embodiment, the difference between the height of the inner barrier wire post B unit 5b and the height of the inner barrier wire post A unit 5a is 0.8-1.2 mm; and / or the difference between the height of the inner barrier wire post B unit 5b and the height of the inner barrier wire post C unit 5c is 0.8-1.2 mm, and the height difference of the three-phase winding coil cross-wire is effectively guided and limited by the height difference between the inner barrier wire post A unit 5a, the inner barrier wire post B unit 5b and the inner barrier wire post C unit 5c.
[0033] Preferably, in the present embodiment, the inner side of the inner insulation ring 0 is provided with a winding connection head clamping 6 for clamping and limiting effect when the three-phase winding of the outer rotor motor is connected, compared with the prior art of using binding tape to fix the connected and leading phase wire cross-wire together, which is easy to cause poor interphase insulation and heat aging failure of the binding tape due to continuous working heat of the motor, thereby causing the motor to sweep the bore.
[0034] Preferably, in the present embodiment, the outer anti-collision ring 2 is provided with an opening 7 for winding wire and a clamping hole 8 for positioning when the winding wire is inserted, and the three phase wire heads (motor input wire) of the three-phase winding are respectively separated and fixed to the integrally formed insulation structure by the clamping hole 8.
[0035] Preferably, in the present embodiment, the outer anti-collision ring 2 is provided with a notch 9 for marking the winding start position, which is beneficial to precisely control the consistency of the winding coil.
[0036] The present embodiment also proposes an outer rotor motor core adopting the insulation structure described above.
[0037] The present embodiment also proposes an outer rotor motor adopting the outer rotor motor core described above.
[0038] It is obvious to those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.
[0039] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature described. The specification can include implicit combinations of explicitly mentioned features and / or explicit combinations of implicitely mentioned features. Each embodiment depends on the explicit combinations of features and / or the implicit combinations of features made specifically within that embodiment, and each such embodiment can be combined with every other such embodiment to create further embodiments.
Claims
1. An insulating structure corresponding to a fitting provided at an end portion of an outer rotor motor core, characterized by, The insulation structure adopts an integrated structure, comprising an inner insulation ring (0) and a plurality of outer insulation columns (1) extending radially along the outer peripheral wall surface of the inner insulation ring (0) in a spaced distribution; wherein The inner insulation ring (0) located on the outer side is provided with an outer anti-collision ring (2) extending outward, and the end surface of the outer anti-collision ring (2) is convex along the outer side surface of the outer insulation column (1); The inner insulation ring (0) located on the inner side is provided with an inner clamping ring (3) clamped into the inner ring of the outer rotor motor iron core, for ensuring that the insulation structure and the outer rotor motor iron core are concentrically installed and arranged; The outer end of the outer insulation column (1) and the connecting end connected with the inner insulation ring (0) are respectively provided with an outer blocking line column (4) and an inner blocking line column (5); The inner side of the inner insulation ring (0) is provided with a winding connection head clamping position (6) for the limiting effect when the three-phase winding of the outer rotor motor is connected in parallel; The outer anti-collision ring (2) is provided with an opening (7) for winding wire and a clamping opening (8) for positioning when the winding enters; The outer anti-collision ring (2) is provided with a notch (9) for marking the winding start position.
2. The insulating structure of claim 1, wherein The outer blocking line column (4) and the inner blocking line column (5) are both located on the outer side of the outer insulation column (1) and protrude outward along the outer side surface of the outer insulation column (1).
3. The insulating structure of claim 1, wherein The inner blocking line column (5) comprises an inner blocking line column A unit (5a), an inner blocking line column B unit (5b) and an inner blocking line column C unit (5c); wherein the heights of the inner blocking line column A unit (5a), the inner blocking line column B unit (5b) and the inner blocking line column C unit (5c) are all not equal.
4. The insulating structure of claim 3, wherein The height of the inner blocking line column B unit (5b) is greater than the height of the inner blocking line column A unit (5a) and less than the height of the inner blocking line column C unit (5c).
5. The insulating structure of claim 4, wherein The difference between the height of the inner blocking line column B unit (5b) and the height of the inner blocking line column A unit (5a) is 0.8-1.2mm; and / or the difference between the height of the inner blocking line column B unit (5b) and the height of the inner blocking line column C unit (5c) is 0.8-1.2mm.
6. An outer rotor motor core characterized by, The insulation structure according to any one of claims 1-5 is adopted.
7. An external rotor electric machine characterized by The outer rotor motor iron core according to claim 6 is adopted.