CN216851453U - Brushless motor and stator seat assembly thereof - Google Patents

Abstract

The utility model relates to a brushless motor and a stator seat component thereof, wherein the stator seat component comprises a stator column and a stator seat; the stator column is arranged on the stator seat and forms an integral structure with the stator seat; the stator column is a cylindrical body formed by winding or stretching a sheet metal part. The stator seat component is formed by winding or stretching a sheet metal part to form the stator column, and the stator column is arranged on the stator seat and forms an integral structure with the stator seat, so that the manufacturing cost of the brushless motor can be saved, and the installation process of the brushless motor is simplified.

Description

Brushless motor and stator seat assembly thereof

Technical Field

The utility model relates to the field of electric machines, more specifically say, relate to a brushless motor and stator holder subassembly thereof.

Background

In a stator of a motor in the related art, a stator post is generally a metal piece, which is formed by casting and is in a separate structure from the stator post, and thus, the stator generally has the disadvantages of high material cost and complex assembly.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide an improved stator frame subassembly, further provide an improved stator and brushless motor.

The utility model provides a technical scheme that its technical problem adopted is: constructing a stator base assembly comprising a stator post and a stator base; the stator column is arranged on the stator seat and forms an integral structure with the stator seat; the stator column is a cylindrical body formed by winding or stretching a sheet metal part.

Preferably, the stator column is cylindrical with two ends penetrating.

Preferably, the two opposite sides of the sheet metal piece are provided with mutually engaging formations.

Preferably, the stator seat injection molding piece, the stator seat and the stator column form an integral structure through an encapsulation injection molding process.

Preferably, the stator seat comprises a seat body and a positioning column arranged on the seat body;

the stator post is sleeved on the periphery of the positioning post.

Preferably, the base is arranged at one end of the stator column and is formed into an integral structure through an encapsulation and injection molding process;

the stator column and the positioning column form an integrated structure through a rubber coating injection molding process.

Preferably, the stator post is provided with a positioning hole matched with the positioning post.

Preferably, the device also comprises a columnar prefabricated part for forming the screw hole;

the prefabricated part is arranged on the seat body and forms an integral structure with the seat body through a rubber coating and injection molding process;

the two ends of the prefabricated part in the axial direction are arranged in a penetrating mode to form the screw holes.

The utility model discloses still construct a stator, include the stator base subassembly and set up in stator core on the stator base subassembly.

The utility model discloses still construct a brushless motor, include the utility model the stator and with stator complex rotor.

Implement the utility model discloses a brushless motor and stator holder subassembly thereof has following beneficial effect: the stator seat component is formed by winding or stretching a sheet metal part to form the stator column, and the stator column is arranged on the stator seat and forms an integral structure with the stator seat, so that the manufacturing cost of the brushless motor can be saved, and the installation process of the brushless motor is simplified.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

fig. 1 is a schematic structural view of a stator housing assembly in a stator of a brushless motor according to some embodiments of the present invention;

FIG. 2 is a cross-sectional view of the stator holder assembly shown in FIG. 1;

FIG. 3 is a schematic view of a stator base of the stator base assembly of FIG. 1;

FIG. 4 is a schematic diagram of a stator post of the stator holder assembly of FIG. 1;

fig. 5 is a schematic view of a preform of the stator holder assembly of fig. 1.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 shows some preferred embodiments of the brushless electric machine of the present invention. The brushless motor can be used as a driving mechanism to output power to the external equipment to drive the external equipment to rotate. The brushless motor has the advantages of low manufacturing cost and simple and convenient manufacturing process. In some embodiments, the brushless motor may include a stator and a rotor, which may rotate in cooperation with each other and may output power through the rotor.

As shown in fig. 1 and 2, in some embodiments, the stator may include a stator holder assembly and a stator core disposed on the stator holder assembly. In some embodiments, the stator holder assembly may include a stator post 20 and a stator holder 10; the stator pole 20 can be disposed on the stator base 10 at the central axis of the stator base 10 and is integrated with the stator base 10. The stator post 20 may be used to mount and position the stator core. In some embodiments, the stator core may be sleeved on an outer circumference of the stator post of the stator base assembly.

Further, in some embodiments, the stator base 10 may be an injection molded part, and the stator base 10 may be over-molded with the stator post 20 to form an integral structure. In some embodiments, the stator base 10 may include a base body 11 and a positioning pillar 12; in some embodiments, the seat body 11 and the positioning column 12 are injection molded parts, and may be separate structures or an integrated structure formed by integral injection molding. The base 11 and the positioning post 12 can be respectively formed with the stator post 20 by a plastic-covered injection molding process to form an integral structure. The seat body 11 is located at one end of the stator pole 20, and is wrapped on the stator pole 20 to form an integral structure; the positioning post 12 is integrally molded with the stator post 20 from the inner side of the stator post 20.

As shown in fig. 3, in some embodiments, the housing 11 may have a disk shape, which may be formed by injecting injection molding compound into a mold to cover an end of the stator pole 20. In some embodiments, the seat 11 may include a first ring 111, a second ring 112, and a connecting portion 113; the first ring 111 is an outer ring, and the second ring 112 can be disposed in the first ring 111, and can be higher than the first ring 111, and can cover a portion of the stator post 20 disposed near the end. The number of the connecting portions 113 may be two, the two connecting portions 113 are symmetrically arranged along the radial direction, and two ends of the two connecting portions 113 may be respectively connected to the first annular body 111 and the second annular body 112, so as to enhance the overall strength of the seat body 11.

In some embodiments, the positioning column 12 can be a column shape, which can be partially inserted into the second annular body 112 of the base 11, and can form an inner molding member to cooperate with the base 11 to fasten the stator column 20. In some embodiments, the positioning post 12 can be formed by injecting injection molding glue coated on the stator post 20 from the inside into a mold. In some embodiments, the outer side wall of the positioning post 12 may be provided with a first embedded portion 121 embedded in the positioning hole 21 of the stator post 20, the first embedded portion 121 may be formed by filling the positioning hole 21 with injection molding glue during the injection molding process, in some embodiments, the first embedded portions 121 may be provided in multiple groups, each group may include a plurality of first embedded portions 121, and the plurality of first embedded portions 121 may be spaced along the circumferential direction of the positioning post 12. The outer side wall of the positioning post 12 can be further provided with a second embedding part 122 embedded into the gap of the joint structure 22 of the stator post 20; the second embedded portion 122 may be disposed along the longitudinal direction of the positioning post 12, and may have a wave shape, which is formed by filling a gap of the joint structure 22 with injection molding glue during the injection molding process.

As shown in fig. 4, in some embodiments, the stator post 20 may be cylindrical in shape and may be formed from a sheet metal piece 200 that is wound or drawn. The stator post 20 can be sleeved on the periphery of the positioning post 12, and one end of the stator post can be inserted into the second annular body 112. In some embodiments, the positioning holes 21 may be disposed on the stator post 20, the positioning holes 21 may be multiple sets, each set of the positioning holes 21 may be multiple, the positioning holes 21 may be disposed at intervals along the circumferential direction of the stator post 20, and the positioning holes 21 may be filled with the injection molding compound for forming the positioning posts 21, so as to improve the stability and reliability of the matching between the stator post 20 and the positioning posts 21. In some embodiments, the two opposite sides of the sheet metal member 200 may be provided with engaging structures 22 engaging with each other, and in some embodiments, the engaging structures may include a plurality of bosses 221 spaced apart from one side and a plurality of grooves 222 spaced apart from the other side; the plurality of grooves 222 and the plurality of bosses 221 may be disposed in a one-to-one correspondence to achieve mutual engagement.

Further, as shown in fig. 2 and 5, in some embodiments, the stator base assembly may further include a preform 30. The preform 30 may be used to form a screw hole 31. In some embodiments, the prefabricated member 30 can be disposed on the base 11 and can be formed as an integral structure with the base 11 by over-molding. In some embodiments, the preform 30 may be cylindrical and may have a six-deformation cross-section. The number of the preforms 30 may be two, and the two preforms 30 may be disposed in one-to-one correspondence with the two connection portions 113. In some embodiments, the preform 30 is provided with two ends penetrating in the axial direction, and a screw hole 31 may be formed at the inner side thereof.

It is to be understood that the foregoing examples merely represent preferred embodiments of the present invention, and that the description thereof is more specific and detailed, but not intended to limit the scope of the invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims (10)

1. A stator holder assembly comprising a stator post (20) and a stator holder (10); the stator column (20) is arranged on the stator seat (10) and forms an integral structure with the stator seat (10); the stator column (20) is a cylindrical body formed by winding or stretching a sheet metal part (200).

2. The stator holder assembly according to claim 1, wherein the stator post (20) is cylindrical with two ends through.

3. The stator holder assembly according to claim 1, wherein the two opposite sides of the sheet metal piece (200) are provided with interengaging engagement formations (22).

4. The stator holder assembly according to claim 1, wherein the stator holder (10) is an injection molded part, and the stator holder (10) and the stator post (20) are formed as an integral structure by an over-molding process.

5. The stator holder assembly according to claim 1, wherein the stator holder (10) comprises a holder body (11) and a positioning column (12) disposed on the holder body (11);

the stator column (20) is sleeved on the periphery of the positioning column (12).

6. The stator base assembly according to claim 5, characterized in that the base body (11) is arranged at one end of the stator post (20) and is formed into an integral structure by an over-molding process;

the stator column (20) and the positioning column (12) form an integral structure through an encapsulation injection molding process.

7. The stator holder assembly according to claim 6, wherein the stator post (20) is provided with a positioning hole (21) for cooperating with the positioning post (12).

8. A stator holder assembly according to claim 5, characterized by a cylindrical preform (30) for forming the screw hole (31);

the prefabricated part (30) is arranged on the seat body (11) and forms an integral structure with the seat body (11) through an encapsulation injection molding process;

the two ends of the prefabricated member (30) in the axial direction are arranged in a penetrating mode to form the screw hole (31).

9. A stator comprising the stator holder assembly of any one of claims 1 to 8 and a stator core disposed on the stator holder assembly.

10. A brushless motor comprising the stator of claim 9 and a rotor engaged with the stator.

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