Stator assembly and electric machine

Abstract

The application discloses a kind of stator assembly and motor.The stator assembly includes stator body;Insulating framework is arranged at the end of the stator body, and a plurality of winding slots are formed on the insulating framework;Partition, one partition is arranged between adjacent two winding slots;Strengthening mechanism, the strengthening mechanism is detachably arranged on the insulating framework, and the strengthening mechanism includes at least one reinforcing piece.The stator assembly and motor of the application set reinforcing sleeve on the insulating framework and set reinforcing mechanism to cooperate with reinforcing sleeve, increase the strength of insulating framework, effectively solve the problem of winding coil collapse, loose wire, so as to overcome the hidden danger of winding injury, poor in prior art when injection molding, when injection molding by using plastic packaging technology, winding injury, breakdown poor hidden danger can be better avoided, reduce the scrap rate of stator assembly, reduce unnecessary raw material scrap.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of driving equipment, more particularly, it relates to a stator assembly and a motor. BACKGROUND

[0002] The insulating framework is an injection molding part for concentrating the winding motor, has an end insulation structure, and also includes additional structures such as slot insulation, wire guide, wire inlet and outlet, and positioning and fixing, and plays an insulation role on the end and other parts of the motor stator. The existing AC plastic-encapsulated motor generally uses a semicircular insulating framework, which is sleeved on a semicircular stator core, and after cooperation, the two are fixed on a winding machine, then the winding machine is started, and the winding coil is wound on the insulating framework. When the coil is wound for a large number of turns, the winding is prone to collapse and loose wire, so that the enameled wire is easily damaged during stator injection molding, and the enameled wire may also contact the core during injection molding, causing breakdown and poor motor reliability. SUMMARY

[0003] The present application discloses a stator assembly and a motor, which solves the problem of poor motor reliability caused by winding collapse and loose wire due to the insulating framework in the prior art.

[0004] The present application discloses a stator assembly, comprising:

[0005] a stator body;

[0006] an insulating framework, the insulating framework is arranged at the end of the stator body, and a plurality of winding slots are formed on the insulating framework;

[0007] a partition, one partition is arranged between adjacent two winding slots;

[0008] a reinforcing mechanism, the reinforcing mechanism is detachably arranged on the insulating framework, and the reinforcing mechanism comprises at least one reinforcing piece;

[0009] The partition comprises a reinforcing sleeve, the reinforcing sleeve corresponds to the reinforcing piece one by one, and the reinforcing piece can be arranged in the reinforcing sleeve.

[0010] The partition further comprises a wire blocking ear, and the wire blocking ear is arranged in a spaced manner with the reinforcing sleeve.

[0011] The insulating framework is provided with a containing groove, and the opening of the containing groove faces the stator body, all the reinforcing sleeves are in communication with the containing groove, and the reinforcing mechanism is detachably arranged in the containing groove.

[0012] The reinforcing mechanism comprises a reinforcing strip, the reinforcing strip is detachably arranged in the containing groove, and all the reinforcing pieces are connected to the reinforcing strip.

[0013] The stator assembly further comprises a plurality of partitions, all of which are arranged on the side of the insulation frame, and a winding slot is formed between any two adjacent partitions.

[0014] The cross section of the partition is U-shaped, and the opening direction of the U-shaped partition is towards the stator body, and the partition is arranged on the bottom surface of the U-shaped partition.

[0015] The cross section of the insulation frame is arc-shaped, and at least two insulation frames are sequentially connected to form a ring structure.

[0016] The stator body has an input end and an output end, the input end is provided with the insulation frame and the reinforcing mechanism, and the output end is provided with the insulation frame.

[0017] Another aspect of the present application provides an electric machine comprising the above-mentioned stator assembly.

[0018] The electric machine further comprises an end cover, the end cover is provided with a mounting hole, and the reinforcing member is fixedly connected with the end cover through the mounting hole.

[0019] The stator assembly and the electric machine of the present application increase the strength of the insulation frame by arranging a reinforcing sleeve on the insulation frame and arranging a reinforcing mechanism to cooperate with the reinforcing sleeve, effectively solve the problem of winding coil collapse and loose wire, thereby overcoming the hidden danger of winding injury and poor performance during injection molding in the prior art, and better avoiding the hidden danger of winding injury and breakdown during injection molding by using plastic packaging technology, reducing the scrap rate of the stator assembly and reducing unnecessary material scrap. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structural schematic diagram of the stator assembly of the embodiment of the present application;

[0021] Figure 2 is a structural schematic diagram of the insulation frame of the embodiment of the present application;

[0022] Figure 3 is another structural schematic diagram of the insulation frame of the embodiment of the present application;

[0023] Figure 4 is a structural schematic diagram of the reinforcing mechanism of the embodiment of the present application;

[0024] Figure 5 is a structural schematic diagram of the electric machine of the embodiment of the present application;

[0025] Figure 6 is a structural schematic diagram of the end cover of the embodiment of the present application;

[0026] Figure 7 is a sectional view of the electric machine of the embodiment of the present application;

[0027] Legend: 1. Stator body; 2. Insulating frame; 21. Winding groove; 3. Reinforcing mechanism; 31. Reinforcing member; 41. Reinforcing sleeve; 42. Wire blocking lug; 22. Receiving groove; 32. Reinforcing strip; 5. End cover; 51. Mounting hole. Detailed Implementation

[0028] The present invention will be further described below with reference to embodiments, but is not limited to the contents of the specification.

[0029] like Figures 1 to 7 As shown, this invention discloses a stator assembly, comprising: a stator body 1; an insulating frame 2, the insulating frame 2 being disposed at the end of the stator body 1, and the insulating frame 2 having a plurality of winding grooves 21 formed thereon; a separator, one of which is disposed between two adjacent winding grooves 21; a reinforcing mechanism 3, the reinforcing mechanism 3 being detachably disposed on the insulating frame 2, and the reinforcing mechanism 3 including at least one reinforcing member 31; the separator including a reinforcing sleeve 41, the reinforcing sleeve 41 corresponding one-to-one with the reinforcing member 31, and the reinforcing member 31 being able to be disposed within the reinforcing sleeve 41. By providing a reinforcing sleeve 41 on the insulating frame 2 and providing a reinforcing mechanism 3 cooperating with the reinforcing sleeve 41, the strength of the insulating frame 2 is increased, effectively solving the problems of winding coil collapse and loosening, thereby overcoming the hidden dangers of winding damage and defects during injection molding in the prior art. The use of plastic encapsulation technology during injection molding can better avoid the hidden dangers of winding damage and breakdown defects, reducing the scrap rate of the stator assembly and reducing unnecessary raw material waste.

[0030] Among them, the insulating frame 2 is an injection-molded part used for centralized winding of motor, and the material is nylon 66, etc. The separators set on the insulating frame 2 have the functions of blocking wires and insulation. The reinforcing sleeve 41 can separate the enameled wire from the reinforcing part 31, and plays the role of blocking wires and insulation. The winding coil is wound on the insulating frame 2.

[0031] Specifically, the separator also includes a wire-blocking lug 42, which is spaced apart from the reinforcing sleeve 41. Both the wire-blocking lug 42 and the reinforcing sleeve 41 serve to block and insulate the wire. To avoid affecting the quality and structural complexity of the stator assembly due to an excessive number of reinforcing sleeves 41 and reinforcing members 31, the wire-blocking lug 42 and the reinforcing sleeve 41 work together. The reinforcing sleeve 41 protects the winding coils in two adjacent winding slots 21, while the wire-blocking lug 42 ensures wire-blocking and insulation between the winding slots 21 while reducing structural complexity.

[0032] The insulating frame 2 is provided with a receiving groove 22, the opening of which faces the stator body 1. All the reinforcing sleeves 41 are connected to the receiving groove 22, and the reinforcing mechanism 3 is detachably disposed within the receiving groove 22. The reinforcing mechanism 3 can be nested precisely within the receiving groove 22 of the insulating frame 2, occupying little space and having a compact structure.

[0033] The reinforcing mechanism 3 includes a reinforcing strip 32, which is detachably disposed within the receiving groove 22. All the aforementioned reinforcing members 31 are connected to the reinforcing strip 32. The reinforcing strip 32 connects all the reinforcing members 31 into a whole, facilitating the installation of the reinforcing mechanism 3.

[0034] Preferably, the reinforcing member 31 is a rivet, which can extend into the reinforcing sleeve 41 and the end of the rivet can protrude from the reinforcing sleeve 41. The material is aluminum 1350 or similar.

[0035] The stator assembly also includes multiple partitions, all of which are disposed on the side of the insulating frame 2, and a winding groove 21 is formed between two adjacent partitions. Specifically, the partition has a U-shaped cross-section, with the opening of the U-shape facing the stator body 1, and the separator is disposed on the bottom surface of the U-shape. The partitions separate adjacent winding coils, thereby ensuring the insulation effect of the insulating frame 2.

[0036] The insulating frame 2 has an arc-shaped cross-section, and at least two insulating frames 2 are connected in sequence to form a ring structure. That is, the ring structure is adapted to the ends of the stator structure, and plays the role of end insulation.

[0037] The stator body 1 has an input end and an output end. The input end is provided with the insulating frame 2 and the reinforcing mechanism 3, and the output end is provided with the insulating frame 2.

[0038] Another aspect of the present invention provides an electric motor including the stator assembly described above.

[0039] The motor also includes an end cover 5, which has a mounting hole 51. The reinforcing member 31 is fixedly connected to the end cover 5 through the mounting hole 51.

[0040] The end cover 5 is made of hot-dip galvanized sheet or similar material. Eight mounting holes 51 are evenly distributed on the first end face of the end cover 5. The mounting holes 51 are arranged in an array along the central axis of the end cover 5, and the center of each mounting hole 51 is on the same circumference. The end cover 5 has a first outer circumferential curved surface and a first flat surface. The first flat surface is perpendicular to the first outer circumferential curved surface. Using the above-mentioned end cover 5 can effectively and tightly connect with the stator assembly, improve the pull-out force of the end cover 5, enhance the fit strength between the end cover 5 and the stator assembly, improve the coaxiality between the bearing chamber of the end cover 5 and the inner circle of the stator core, and improve the noise quality of the motor.

[0041] Because the reinforcing mechanism 3 is injection molded into the stator, the first plane of the stator assembly has reinforcing members 31 protruding from it. The reinforcing members 31 pass completely through the mounting holes 51 of the end cover 5. When the first plane of the end cover 5 is in complete contact with the first plane of the stator assembly, the riveting equipment rivets the reinforcing members 31 (rivets), thereby achieving axial fixation of the end cover 5 and the stator assembly. This improves the pull-out force of the end cover 5, eliminates the hidden danger of the end cover 5 easily loosening after the motor heats up during operation, and at the same time ensures the coaxiality of the bearing chamber of the end cover 5 and the inner circle of the stator core, improving the noise quality of the motor. The end cover 5 also has a first outer circumferential curved surface, and the stator assembly has a first inner circumferential curved surface. The fit between the two curved surfaces is an interference fit, which achieves effective fixation of the end cover 5 and the stator assembly.

[0042] The front end cover 5 of the motor is injection molded into the stator, and the rear end cover 5 is effectively fixed using the aforementioned fixing method, which greatly improves the pull-out force of the end covers 5 on both sides, enhances the fit strength between the end covers 5 and the stator assembly, and effectively solves the problem that the rear end cover 5 is prone to loosening due to heat generation during long-term motor operation; at the same time, after the first plane of the stator assembly is in complete contact with the first plane of the end cover 5, the rivets and mounting holes 51 are arrayed along the central axis of the bearing chamber of the end cover 5, and the interference fit between the inner curved surface of the stator and the outer curved surface of the end cover 5 improves the coaxiality between the bearing chamber of the end cover 5 and the inner circle of the stator core, thereby improving the noise quality of the motor.

[0043] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is impossible to exhaustively list all embodiments here. All obvious variations or modifications derived from the technical solutions of the present invention are still within the protection scope of the present invention.

Claims

1. A stator assembly, characterized in that, include: Stator body (1); An insulating frame (2) is disposed at the end of the stator body (1), and a plurality of winding grooves (21) are formed on the insulating frame (2). A separator is provided between two adjacent winding grooves (21); A reinforcing mechanism (3) is detachably mounted on the insulating frame (2), and the reinforcing mechanism (3) includes at least one reinforcing member (31). The separator includes a reinforcing sleeve (41), the reinforcing sleeve (41) and the reinforcing member (31) are corresponding one-to-one, and the reinforcing member (31) can be disposed inside the reinforcing sleeve (41); The reinforcing member (31) is a rivet, which extends into the reinforcing sleeve (41) and the end of the rivet protrudes from the reinforcing sleeve (41). The insulating frame (2) is provided with a receiving groove (22), and the opening of the receiving groove (22) faces the stator body (1). The reinforcing mechanism (3) includes a reinforcing strip (32), which is detachably disposed in the receiving groove (22), and all the above-mentioned reinforcing members (31) are connected to the reinforcing strip (32).

2. The stator assembly according to claim 1, characterized in that, The separator also includes a wire-blocking lug (42), which is spaced apart from the reinforcing sleeve (41).

3. The stator assembly according to claim 2, characterized in that, All of the reinforcing sleeves (41) are connected to the receiving groove (22), and the reinforcing mechanism (3) is detachably disposed in the receiving groove (22).

4. The stator assembly according to claim 1, characterized in that, The stator assembly also includes multiple partitions, all of which are disposed on the side of the insulating frame (2), and a winding groove (21) is formed between two adjacent partitions.

5. The stator assembly according to claim 4, characterized in that, The partition plate has a U-shaped cross-section, with the opening of the U-shape facing the stator body (1), and the partition is disposed on the bottom surface of the U-shape.

6. The stator assembly according to claim 1, characterized in that, The cross-section of the insulating frame (2) is arc-shaped, and at least two insulating frames (2) are connected in sequence to form a ring structure.

7. The stator assembly according to claim 1, characterized in that, The stator body (1) has an input end and an output end. The input end is provided with the insulating frame (2) and the reinforcing mechanism (3), and the output end is provided with the insulating frame (2).

8. An electric motor, characterized in that, The stator assembly includes any one of claims 1 to 7.

9. The motor according to claim 8, characterized in that, The motor also includes an end cover (5), on which a mounting hole (51) is provided, and the reinforcing member (31) is fixedly connected to the end cover (5) through the mounting hole (51).

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