End insulation and stator assembly and external rotor motor using same

Abstract

The utility model discloses an end portion insulation and a stator assembly and an external rotor motor applying the same, the end portion insulation comprises an end panel and a sleeve, the end panel comprises an insulation yoke portion and a plurality of insulation tooth portions extending outwards from the outer side surface of the insulation yoke portion, and the sleeve is installed on the insulation yoke portion. According to the utility model, the enameled wire is convenient to hang in the winding process, the enameled wire is prevented from getting out of the slot, no enameled wire exists at the notch part, the enameled wire is not contacted with the stator core notch, the enameled wire is prevented from being scratched, and the enameled wire is influenced by the boss in the winding process and is deviated to the inner side of the stator core, thereby facilitating the production of the slot wedge.

Description

Technical Field

[0001] The utility model relates to an end insulation and a stator component and an outer rotor motor using the same. Background Art

[0002] The existing stator assembly includes a stator core, end insulation installed on the two end faces of the stator core, and a coil winding wound on the end insulation. During the production process, it was found that during the automatic winding process of the AC102 outer rotor two-pole motor machine, the enameled wire came out of the slot, the enameled wire came into contact with the core slot, and the enameled wire was damaged. Since the enameled wire occupies the slot position, it is very difficult to wedge the slot during the production process. In order to improve the production winding damage and improve production efficiency, it is necessary to optimize the motor structure to meet the wire out of the slot problem. Summary of the invention

[0003] The utility model aims to provide an end insulation and a stator assembly and an outer rotor motor using the same, so as to solve the technical problems in the prior art of enameled wire coming out of the slot, the enameled wire contacting with the core slot, the enameled wire being damaged during the automatic winding process, and the enameled wire occupying the slot position, making it very difficult to wedge the slot during the production process.

[0004] The technical solution of the utility model is achieved in this way:

[0005] The utility model provides an end insulation, comprising an end panel and a sleeve, wherein the end panel comprises an insulating yoke and a plurality of insulating teeth extending outwardly from the outer side of the insulating yoke, the sleeve is mounted on the insulating yoke, and is characterized in that an axially protruding boss is provided on the top surface of each insulating tooth.

[0006] The outer side surface of the above-mentioned boss is an inclined surface.

[0007] There is a certain distance between the outer side surface of the boss and the outer edge of the insulating tooth portion.

[0008] The above-mentioned sleeve includes a first sleeve and a second sleeve, the first sleeve is located above the second sleeve, the outer diameter of the first sleeve is larger than the outer diameter of the second sleeve, a connecting plate is provided between the first sleeve and the second sleeve, and the bottom of the second sleeve is clamped on the inner side of the insulating yoke through a limit assembly.

[0009] The above-mentioned limiting assembly includes a plurality of positioning limiting grooves arranged at the bottom of the second sleeve and a plurality of positioning bosses arranged on the inner side surface of the insulating yoke and located at the bottom. The positioning limiting grooves correspond to the positioning bosses. When the sleeve is clamped on the end panel, the positioning limiting grooves abut against the positioning bosses.

[0010] The inner side surface of the insulating yoke described above is provided with a guide column above the positioning boss, and the outer side surface of the second sleeve is provided with a guide groove corresponding to the guide column. The positioning limit groove cooperates with the positioning boss through the cooperation of the guide groove and the guide column.

[0011] The above-mentioned limit assembly also includes an annular undercut rib arranged on the outer surface of the second sleeve and close to the bottom, and an annular undercut step arranged on the inner side of the insulating yoke and located at the top. When the positioning limit groove abuts against the positioning boss, the annular undercut rib is buckled under the annular undercut step.

[0012] An axial groove is provided on the outer side surface of the first sleeve.

[0013] A mounting column is axially protruded from the bottom surface of the insulating yoke.

[0014] A stator assembly comprises a stator core, end insulations are installed on both end surfaces of the stator core, coil windings are wound outside the end insulations, and the end insulations are the end insulations described above.

[0015] An outer rotor motor comprises a stator assembly and an outer rotor assembly, wherein the stator assembly is the stator assembly described above.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] 1. The utility model includes an end panel and a sleeve, the end panel includes an insulating yoke and a plurality of insulating teeth extending outward from the outer side of the insulating yoke, the sleeve is installed on the insulating yoke, and is characterized in that: an axially protruding boss is provided on the top surface of each insulating tooth, which is convenient for hanging the enameled wire during winding, and will not cause the enameled wire to come out of the groove, there is no enameled wire at the groove position, the enameled wire does not contact the stator core groove, the enameled wire will not be scratched, and the enameled wire is affected by the boss during winding, and is biased toward the inner side of the stator core, which is convenient for producing slot wedges.

[0018] 2. Other advantages of the utility model are described in detail in the embodiment section of the specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A three-dimensional diagram provided for the utility model;

[0020] Figure 2 Another perspective view provided by the utility model;

[0021] Figure 3 An exploded view provided for the utility model;

[0022] Figure 4 Another exploded view from another angle provided by the utility model;

[0023] Figure 5 A front view provided for the utility model;

[0024] Figure 6 for Figure 5 Sectional view of AA. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Embodiment 1:

[0027] like Figures 1 to 6 As shown, this embodiment provides an end insulation, including an end panel 11 and a sleeve 12, the end panel 11 includes an insulating yoke 111 and a plurality of insulating teeth 112 extending outward from the outer surface of the insulating yoke 111, the sleeve 12 is installed on the insulating yoke 111, and is characterized in that: an axially protruding boss 113 is provided on the top surface of each insulating tooth 112, which facilitates the hanging of the enameled wire during the winding process, does not cause the enameled wire to come out of the groove, there is no enameled wire at the groove position, the enameled wire does not contact the stator core groove, the enameled wire will not be scratched, and the enameled wire is affected by the boss during the winding process, and is biased towards the inner side of the stator core, which is convenient for the production of slot wedges.

[0028] The outer side surface 113a of the boss 113 is an inclined surface for easy installation.

[0029] There is a certain distance between the outer side surface 113 a of the boss 113 and the outer edge of the insulating tooth portion 112 for easy installation.

[0030] The above-mentioned sleeve 12 includes a first sleeve 121 and a second sleeve 122. The first sleeve 121 is located above the second sleeve 122. The outer diameter of the first sleeve 121 is larger than the outer diameter of the second sleeve 122. A connecting plate 123 is provided between the first sleeve 121 and the second sleeve 122. The bottom of the second sleeve 122 is clamped on the inner side of the insulating yoke 111 through a limiting assembly, which is convenient for the enameled wire to be routed into the stator core, and the structure is reasonable.

[0031] The above-mentioned limiting assembly includes a plurality of positioning limiting grooves 122a arranged at the bottom of the second sleeve 122 and a plurality of positioning bosses 111a arranged on the inner side surface of the insulating yoke 111 and located at the bottom. The positioning limiting grooves correspond to the positioning bosses. When the sleeve 12 is clamped on the end panel 11, the positioning limiting grooves 122a abut against the positioning bosses 111a, effectively preventing the sleeve from circumferential rotation. The structural arrangement is reasonable and the positioning effect is good.

[0032] A guide column 111b is provided on the inner side of the insulating yoke 111 and above the positioning boss 111a. A guide groove 122b corresponding to the guide column 111b is provided on the outer side of the second sleeve 122. The positioning limit groove 122a cooperates with the positioning boss 111a through the cooperation of the guide groove and the guide column, so that the installation is convenient.

[0033] The above-mentioned limiting assembly also includes an annular undercut rib 124 arranged on the outer surface of the second sleeve 122 and near the bottom, and an annular undercut step 111d arranged on the inner side of the insulating yoke 111 and located at the top. When the positioning limiting groove 122a is against the positioning boss 111a, the annular undercut rib 124 is snapped under the annular undercut step 111d. Through the cooperation between the positioning limiting groove 122a and the positioning boss 111a and the cooperation between the annular undercut rib 124 and the annular undercut step 111d, the sleeve 12 is fixed on the end panel 11. The installation structure is simple and the positioning effect is good.

[0034] An axial groove 121a is provided on the outer side of the first sleeve 121, which is convenient for the installation and positioning of the circuit board and has a reasonable structural arrangement.

[0035] The bottom surface of the insulating yoke 111 is axially protruded with a mounting column 111c, which is convenient for mounting with the stator core and has a reasonable structural arrangement.

[0036] Embodiment 2:

[0037] A stator assembly includes a stator core, end insulation installed on both end surfaces of the stator core, and a coil winding wound outside the end insulation, characterized in that: the end insulation is the end insulation described in the above embodiment 1.

[0038] Embodiment three:

[0039] An outer rotor motor comprises a stator assembly and an outer rotor assembly, wherein the stator assembly is the stator assembly described in the second embodiment.

[0040] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited thereto. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention are equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. An end insulation, comprising an end panel (11) and a sleeve (12), wherein the end panel (11) comprises an insulating yoke (111) and a plurality of insulating teeth (112) extending outwardly from an outer surface of the insulating yoke (111), and the sleeve (12) is mounted on the insulating yoke (111), characterized in that: A boss (113) protrudes axially on the top surface of each insulating tooth portion (112).

2. The end insulation according to claim 1, characterized in that: The outer side surface (113a) of the boss (113) is an inclined surface.

3. An end insulation according to claim 2, characterized in that: There is a certain distance between the outer side surface (113a) of the boss (113) and the outer edge of the insulating tooth portion (112).

4. An end insulation according to claim 1, 2 or 3, characterized in that: The sleeve (12) comprises a first sleeve (121) and a second sleeve (122); the first sleeve (121) is located above the second sleeve (122); the outer diameter of the first sleeve (121) is larger than the outer diameter of the second sleeve (122); a connecting plate (123) is provided between the first sleeve (121) and the second sleeve (122); and the bottom of the second sleeve (122) is clamped on the inner side of the insulating yoke (111) through a limiting assembly.

5. An end insulation according to claim 4, characterized in that: The limiting assembly comprises a plurality of positioning limiting grooves (122a) arranged at the bottom of the second sleeve (122) and a plurality of positioning bosses (111a) arranged on the inner side surface of the insulating yoke (111) and located at the bottom, the positioning limiting grooves corresponding to the positioning bosses, and when the sleeve (12) is clamped on the end panel (11), the positioning limiting grooves (122a) abut against the positioning bosses (111a).

6. The end insulation according to claim 5, characterized in that: A guide column (111b) is provided on the inner side surface of the insulating yoke (111) and above the positioning boss (111a), and a guide groove (122b) corresponding to the guide column (111b) is provided on the outer side surface of the second sleeve (122), and the positioning limit groove (122a) is matched with the positioning boss (111a) through the matching of the guide groove and the guide column.

7. An end insulation according to claim 6, characterized in that: The limiting assembly also includes an annular undercut rib (124) arranged on the outer surface of the second sleeve (122) and close to the bottom, and an annular undercut step (111d) arranged on the inner side of the insulating yoke (111) and located at the top. When the positioning limiting groove (122a) abuts against the positioning boss (111a), the annular undercut rib (124) is snapped under the annular undercut step (111d).

8. The end insulation according to claim 4, characterized in that: An axial groove (121a) is provided on the outer side surface of the first sleeve (121).

9. The end insulation according to claim 4, characterized in that: A mounting column (111c) protrudes axially from the bottom surface of the insulating yoke (111).

10. A stator assembly, comprising a stator core, end insulation installed on both end surfaces of the stator core, and a coil winding wound on the end insulation, characterized in that: The end insulation is the end insulation according to any one of claims 1 to 9.

11. An outer rotor motor, comprising a stator assembly and an outer rotor assembly, characterized in that: The stator assembly is the stator assembly according to claim 10.

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