CN219351391U

CN219351391U - Miniaturized brushless motor stator

Info

Publication number: CN219351391U
Application number: CN202320294939.8U
Authority: CN
Inventors: 朱黎蛟; 肖前进
Original assignee: Fulling & Ceiec Co ltd
Current assignee: Changzhou Fulin Zhongdian Intelligent Technology Co ltd
Priority date: 2023-02-23
Filing date: 2023-02-23
Publication date: 2023-07-14
Anticipated expiration: 2033-02-23

Abstract

The utility model relates to the technical field of motors, in particular to a miniaturized brushless motor stator, which comprises a stator core, wherein two ends of the stator core are matched with insulating frameworks, and a winding is arranged between the insulating frameworks and the stator core; a plurality of pairs of wire blocking posts are uniformly distributed on the end face of the insulating framework along the circumferential direction; the miniaturized brushless motor stator further comprises connecting pieces, the number of the connecting pieces and the number of windings are the same as the logarithm of the wire blocking posts, and the lower end of each connecting piece is respectively fixed between each pair of wire blocking posts; the head end and the tail end of each winding are respectively welded and fixed on two sides of each connecting sheet in sequence. The utility model simplifies the installation process, meets the parallel welding of a plurality of windings of the stator and facilitates the structure of positioning and distribution of outgoing lines, has simple structure and convenient operation, and realizes the winding and welding of the whole brushless stator within the range of not adding other parts and having limited height space of the stator.

Description

Miniaturized brushless motor stator

Technical Field

The utility model relates to the technical field of motors, in particular to a miniaturized brushless motor stator.

Background

At present, due to the requirements of the automobile industry on integration, miniaturization and economy of an automobile internal structure, the application of an automobile motor split structure and the design of integration with an integral actuating mechanism are widely used. The split type conducting ring used by the conventional motor at present belongs to an additionally added metal or plastic insert, the split type conducting ring is required to be installed on a stator and then the lead wire is welded, an assembly process is increased, the process difficulty is high, and the accumulated tolerance of multiple parts and the assembly strength of the split type conducting ring per se are required to be considered for controlling the assembly position, so that the cost is high; and the conducting ring realizes the line crossing and doubling through the metal sheets or a plurality of metal sheets with a plurality of hooks, so that the cost and the welding process are increased. And the conductive ring structure is used to cause that the motor occupies more axial space, thus being not applicable to the miniaturized use requirement of the motor, and the conductive ring structure with special design has great difficulty and high cost.

Chinese patent publication No. CN108155738B discloses an end ring structural unit, an end ring and a generator, the end ring structural unit being installed in a circumferential area of an end portion of a stator, comprising: the first conductive group piece, the second conductive group piece and the cable outlet part, the quantity of first conductive group piece is two to two first conductive group pieces set up the both sides at the axis of stator relatively, and two first conductive group pieces can be connected with two output electricity of the winding of stator respectively, and the second conductive group piece sets up the circumference region of the tip of stator between two first conductive group pieces at least partially, and first conductive group piece is connected with the cable outlet part electricity through the second conductive group piece. The patent has the advantages that the axial height is reduced, but the number of the conducting rings is large, the assembly process is increased, the process difficulty is high, the welding structure of the conducting ring outgoing lines on the outer side is complex, and the operation is inconvenient.

Disclosure of Invention

In order to solve the problems of the prior art in the background art described above, the present utility model provides an improved miniaturized brushless motor stator.

The technical scheme adopted for solving the technical problems is as follows:

a miniaturized brushless motor stator comprises a stator core, wherein two ends of the stator core are matched with insulating frameworks, and windings are arranged between the insulating frameworks and the stator core;

a plurality of pairs of wire blocking posts are uniformly distributed on the end face of the insulating framework along the circumferential direction;

the miniaturized brushless motor stator further comprises connecting pieces, the number of the connecting pieces and the number of windings are the same as the logarithm of the wire blocking posts, and the lower end of each connecting piece is respectively fixed between each pair of wire blocking posts;

the head end and the tail end of each winding are respectively welded and fixed on two sides of each connecting sheet in sequence.

Further, the lower end of the connecting sheet is provided with a baffle, the wire blocking posts extend along the axial direction, a slot is arranged between each pair of wire blocking posts, and the baffle is matched and fixed in the slot.

Furthermore, the upper end of the connecting sheet is of an arch structure, curled edges are arranged on two sides of the connecting sheet, and the head end and the tail end of each winding are respectively welded and fixed in the curled edges on two sides of each connecting sheet in sequence.

Further, a step structure is arranged between the baffle at the lower end of the connecting sheet and the arch-shaped structure at the upper end, and the thickness of the baffle is smaller than that of the arch-shaped structure.

The step-shaped connecting piece is used in the arrangement, so that press mounting is conducted in a smaller space, the strength of an insulating framework is guaranteed, the thickness of the baffle is set in such a way that the root of the connecting piece is thinner, the press mounting process can be met, and the thickness of the curled edge of the front end hook meets the resistance welding of the corresponding wire diameter enameled wire.

Further, the end part of the insulating framework is provided with an outer ring wire baffle plate and an inner ring wire baffle plate which are coaxial, and the winding is positioned between the outer ring wire baffle plate and the inner ring wire baffle plate.

Further, a plurality of middle wire baffle plates are arranged between the outer ring wire baffle plate and the inner ring wire baffle plate along the circumferential direction, and the middle wire baffle plates are distributed between two adjacent pairs of wire baffle posts;

the winding is wound between the outer ring wire baffle plate and the middle wire baffle plate through a crossover.

The winding jumper is arranged to reduce the welding times, the winding is performed at one time by winding equipment, intermediate procedures are reduced, and manufacturing cost is reduced.

Further, the middle wire baffle plate and the wire baffle posts are uniformly distributed along the circumferential direction of the insulating framework.

Further, an injection molding housing is arranged on the outer side of the insulating framework, and the outgoing line of the winding is led out from one end of the housing as the outgoing line of the stator.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the wire blocking column is arranged on the insulating framework, the slot is formed through the extending end of the wire blocking column, and the connecting sheet of the arch-shaped structure is inserted, so that the installation process is simplified, the parallel wire welding of a plurality of windings of the stator is met, the structure of positioning and distributing the outgoing wires is convenient, the structure is simple, the operation is convenient, and the winding and welding of the whole brushless stator are realized within the range that other parts are not added and the height space of the stator is limited; the assembly process of the conducting ring is reduced, the part cost of the stator is greatly reduced, the process difficulty is reduced, and meanwhile, the stability of stator welding and the yield of stator injection molding are improved.

The utility model saves the conducting ring, reduces the parts of the parallel welding of the brushless motor, reduces the use of plastics and metals, and saves the cost; the winding outgoing line is welded and positioned on the connecting sheet, so that the positioning and distributing precision is improved, and the stator injection molding in the form of outgoing lines is realized; the space and weight of the whole product are reduced.

Drawings

FIG. 1 is a schematic diagram of the external configuration of the present utility model;

FIG. 2 is a schematic view of the internal structure of the present utility model prior to welding the bond pads to the winding wire;

FIG. 3 is a schematic view of the internal structure of the present utility model after the connection tab is welded to the winding wire;

FIG. 4 is a schematic structural view of a connecting piece;

FIG. 5 is a schematic structural view of an insulating skeleton;

FIG. 6 is a schematic diagram of the principle structure of the parallel connection of windings;

fig. 7 is a schematic diagram of the structure of the parallel connection of the windings.

In the figure: stator core 1, insulating skeleton 2, fender post 201, slot 202, outer lane fender 203, inner circle fender 204, middle part fender 205, winding 3, connection piece 4, separation blade 401, turn-up 402, housing 5.

Detailed Description

The utility model will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the utility model and therefore show only the structures which are relevant to the utility model.

Referring to fig. 1 to 7, a miniaturized brushless motor stator includes a stator core 1 and a connection piece 4.

The two ends of the stator core 1 are matched with an insulating framework 2, three windings 3 are arranged between the insulating framework 2 and the stator core 1 in the embodiment, and three pairs of wire blocking posts 201 are uniformly distributed on the end face of the insulating framework 2 along the circumferential direction.

A strip-shaped baffle 401 is arranged at the lower end of the connecting sheet 4, the wire blocking posts 201 extend along the axial direction, a slot 202 is arranged between each pair of wire blocking posts 201, the slot 202 is a slot with an arch structure, and the baffle 401 is matched and fixed in the slot 202; the upper end of the connecting sheet 4 is of an arch-shaped structure, the two sides of the connecting sheet are provided with curled edges 402, and the head end and the tail end of each winding 3 are respectively welded and fixed in the curled edges 402 at the two sides of each connecting sheet 3 in sequence.

The baffle 401 at the lower end of the connecting sheet 4 and the arch-shaped structure at the upper end are in a step structure, and the thickness of the baffle 401 is smaller than that of the arch-shaped structure.

An outer ring wire baffle 203 and an inner ring wire baffle 204 which are coaxial are arranged at the end part of the insulating framework 2, and the winding 3 is positioned between the outer ring wire baffle 203 and the inner ring wire baffle 204; a plurality of middle wire baffle plates 205 are arranged between the outer ring wire baffle plates 203 and the inner ring wire baffle plates 204 along the circumferential direction, and the middle wire baffle plates 205 are distributed between two adjacent pairs of wire baffle columns 201; the winding 3 is wound between the outer ring wire baffle 203 and the middle wire baffle 205 by crossing wires. The middle wire baffle 205 and the wire baffle posts 201 are uniformly distributed along the circumference of the insulating framework 2, two middle wire baffle 205 are arranged between two adjacent pairs of wire baffle posts 201 in the embodiment, and the middle wire baffle 205 and the wire baffle posts 201 are respectively opposite to the winding holes on the insulating framework 2.

An injection molded housing 5 is arranged on the outer side of the insulating framework 2, and the outgoing line of the winding 3 is led out of one end housing 5 as the outgoing line of the stator.

During assembly, the two insulating frameworks 2 are assembled on two sides of the stator core 1 respectively, then the three windings 3 are wound on the insulating frameworks 2 and the stator core 1 respectively, and then the connecting sheet 4 is bridged and pressed in the slot 202 between the wire blocking posts 201. In the miniaturized brushless motor of the present embodiment, the stator is a triangle connection type brushless motor, and three groups of windings 3 need to be connected end to realize a path. As shown in fig. 6 and 7, three windings 3 are respectively set as a winding one 301, a winding two 302 and a winding three 303, the head end a of the winding one 301 and the tail end E of the winding three 303 are welded in the two side curled edges 402 of one connecting sheet 4, the tail end D of the winding one 301 and the head end C of the winding two 302 are welded in the two side curled edges 402 of the second connecting sheet 4, the tail end F of the winding two 302 and the head end B of the winding three 303 are welded in the two side curled edges 402 of the third connecting sheet 4, and the curled edges 402 on the two sides of the connecting sheet 4 are tightly connected. Finally, the injection molded housing 5 is assembled, and the leading-out wires of the first end A of the first winding 301, the first end C of the second winding 302 and the first end B of the third winding 303 are led out of the one-end housing 5 as leading-out wires of the stator.

When the first winding 301 is wound specifically, the enameled wire of the first winding 301 passes through the space between the pair of wire blocking posts 201 corresponding to the head end A of the enameled wire and is positioned at the lower end of the blocking piece 401 of the connecting piece 4, clockwise windings are wound between the outer ring wire blocking plate 203 and the middle wire blocking plate 205, when the enameled wire is wound to the adjacent wire blocking posts 201, two turns of coils are wound on the insulating framework 2 and the stator core 1, then the enameled wire is wound from the rear side of the adjacent wire blocking posts 201, clockwise windings are wound between the outer ring wire blocking plate 203 and the middle wire blocking plate 205, when the enameled wire is wound to the third pair of wire blocking posts 201, two turns of coils are wound on the insulating framework 2 and the stator core 1, and finally the tail end D of the first winding 301 is wound from the curled edge 402 of the connecting piece 4 corresponding to the third pair of wire blocking posts 201. Similarly, the second winding 302 and the third winding 303 are sequentially wound according to the winding mode of the first winding 301, after the enamelled wires of the windings are wound, the connecting sheets 4 are installed, and then the winding ends can be welded in the curled edges 402 of the corresponding connecting sheets 4.

The utility model saves the conducting ring, simplifies the installation process, meets the parallel welding of a plurality of windings of the stator and is convenient for the structure of positioning and distributing the outgoing lines, has simple structure and convenient operation, and realizes the winding and welding of the whole brushless stator within the range of not adding other parts and having limited stator height space; the part cost of the stator is greatly reduced, the process difficulty is reduced, and meanwhile, the stability of stator welding and the yield of stator injection molding are improved. The winding outgoing line is welded and positioned on the connecting sheet, so that the positioning and distributing precision is improved, the stator injection molding in the form of outgoing lines is realized, and the space and the weight of the whole product are reduced.

With the above-described preferred embodiments according to the present utility model as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.

Claims

1. A miniaturized brushless motor stator comprises a stator core (1), wherein insulating frameworks (2) are matched with two ends of the stator core (1), and windings (3) are arranged between the insulating frameworks (2) and the stator core (1);

the method is characterized in that: a plurality of pairs of wire blocking posts (201) are uniformly distributed on the end surface of the insulating framework (2) along the circumferential direction;

the miniaturized brushless motor stator further comprises connecting pieces (4), the number of the connecting pieces (4) and the number of the windings (3) are the same as the logarithm of the wire blocking posts (201), and the lower end of each connecting piece (4) is respectively fixed between each pair of wire blocking posts (201);

the head end and the tail end of each winding (3) are respectively welded and fixed on two sides of each connecting sheet (4) in sequence.

2. A miniaturized brushless motor stator according to claim 1, wherein: the lower end of the connecting sheet (4) is provided with a baffle sheet (401), the wire blocking posts (201) extend along the axial direction, a slot (202) is arranged between each pair of wire blocking posts (201), and the baffle sheet (401) is matched and fixed in the slot (202).

3. A miniaturized brushless motor stator according to claim 2, wherein: the upper end of the connecting sheet (4) is of an arch structure, curled edges (402) are arranged on two sides of the connecting sheet, and the head end and the tail end of each winding (3) are respectively welded and fixed in the curled edges (402) on two sides of each connecting sheet (4) in sequence.

4. A miniaturized brushless motor stator according to claim 3, wherein: the baffle plate (401) at the lower end of the connecting plate (4) and the arch-shaped structure at the upper end are in a step structure, and the thickness of the baffle plate (401) is smaller than that of the arch-shaped structure.

5. A miniaturized brushless motor stator according to claim 1, wherein: the end part of the insulating framework (2) is provided with an outer ring wire baffle plate (203) and an inner ring wire baffle plate (204) which are coaxial, and the winding (3) is positioned between the outer ring wire baffle plate (203) and the inner ring wire baffle plate (204).

6. A miniaturized brushless motor stator according to claim 5, wherein: a plurality of middle wire baffle plates (205) are arranged between the outer ring wire baffle plates (203) and the inner ring wire baffle plates (204) along the circumferential direction, and the middle wire baffle plates (205) are distributed between two adjacent pairs of wire baffle columns (201);

the winding (3) is wound between the outer ring wire baffle plate (203) and the middle wire baffle plate (205) through a crossover.

7. A miniaturized brushless motor stator according to claim 6, wherein: the middle wire baffle plates (205) and the wire baffle posts (201) are uniformly distributed along the circumferential direction of the insulating framework (2).

8. A miniaturized brushless motor stator according to claim 1, wherein: an injection molding housing (5) is arranged on the outer side of the insulating framework (2), and outgoing wires of the windings (3) are led out from one end of the housing (5) as outgoing wires of the stator.