CN212935584U

CN212935584U - Novel motor structure

Info

Publication number: CN212935584U
Application number: CN202021832801.1U
Authority: CN
Inventors: 肖锐
Original assignee: Hubei Queen Ocean Electrical Appliance Manufacture Co Ltd
Current assignee: Hubei Queen Ocean Electrical Appliance Manufacture Co Ltd
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2021-04-09
Anticipated expiration: 2030-08-28

Abstract

The utility model discloses a novel motor structure, including the rotor subassembly, stator module and coil winding, stator module includes a plurality of blocks circumference evenly distributed's E shape stator core, a plurality of blocks E shape stator core distribute in the rotor subassembly periphery, E shape stator core includes yoke portion and the left polar arm that stretches out from yoke portion, middle polar arm and right polar arm, coil winding is convoluteed on middle polar arm or convolute simultaneously on left polar arm and right polar arm, left polar arm, the tip of middle polar arm and right polar arm forms left magnetic pole face respectively, middle magnetic pole face and right magnetic pole face, the rotor subassembly periphery is surrounded by a plurality of left magnetic pole faces, middle magnetic pole face and right magnetic pole face interval, its characterized in that: the ratio of the width L1 of the middle pole face to the width L2 of the middle pole arm of all E-shaped stator cores is in the following range: L1/L2 is more than or equal to 1 and less than or equal to 1.3, the structure meets the production process foundation of the motor stator, and the motor stator has a simple structure, reasonable structural arrangement and convenient winding.

Description

Novel motor structure

The technical field is as follows:

the utility model relates to a novel motor structure.

Background art:

at present, there is a structure of a high-speed running motor, which has high rotor rotation speed, low manufacturing cost, and simple structure widely used in the field of a vacuum cleaner, on the market, a stator assembly of the motor of the structure generally includes several stator cores, each of which is often formed in a c-shape, each of which has a back and two pole arms (which extend from the back), wherein there are pole faces at ends of each of the pole arms, a bobbin is provided on the c-shaped stator core, windings are wound around the bobbin, four c-shaped stator cores 2 are provided, and windings 3 are wound around each of the stator cores 2. Each of the four stator cores and windings are identical, see chinese patent No. 201810569772.5, including at least one pair of c-shaped stator cores, each having a bobbin and a winding wound around each bobbin, wherein the windings on each adjacent pair of c-shaped stator cores are wound in opposite directions, a drawback and/or a problem of the prior art: the C-shaped structure is adopted, the groove-shaped opening is large, the distribution density of the magnetic pole surface is low, the torque pulsation of the motor is large, and the motor efficiency is low.

In addition, the applicant proposes a solution for a new motor aiming at the technical characteristics of the existing motor, as shown in fig. 1 and fig. 2, the motor structure comprises a stator assembly and a rotor assembly 3A, the stator assembly comprises a plurality of E-shaped iron cores 1A distributed around the rotor assembly 3A in the circumferential direction, the E-shaped iron cores 1A comprise a yoke portion 11A, a left pole arm 12A, a middle pole arm 13A and a right pole arm 14A extending from the yoke portion 11A, the middle pole arm 3A is wound around a coil winding 2A, two ends of the top of the middle pole arm 3A extend out of a flange 5A to enable the cross-sectional length of a magnetic pole surface 4A at the top of the middle pole arm 3A to be longer, so as to reduce moment pulsation, and when the coil winding 2A is subjected to coil inserting, due to the fact that the width of a slot opening 6A is reduced, the difficulty of the coil winding 2A in coil inserting is increased, the process is complicated and the rejection rate is increased.

The invention content is as follows:

the utility model aims at providing a novel motor structure can solve among the prior art middle polar arm top both ends and extend a flange, and both ends flange length is great, leads to groove open-ended width to reduce, increases the degree of difficulty when making the stator wire winding, leads to the technical problem that the rejection rate increases.

A further object of the utility model is to provide a novel motor structure can effectively reduce the torque ripple, improves motor efficiency.

The purpose of the utility model is realized by the following technical scheme:

the utility model provides a novel motor structure, including the rotor subassembly, stator module and coil winding, stator module includes a plurality of blocks circumference evenly distributed's E shape stator core, a plurality of blocks E shape stator core distribute in the rotor subassembly periphery, E shape stator core includes yoke portion and the left polar arm that stretches out from yoke portion, middle polar arm and right polar arm, coil winding is convoluteed on middle polar arm or is convoluteed on left polar arm and right polar arm simultaneously, left polar arm, the tip of middle polar arm and right polar arm forms left magnetic pole face respectively, middle magnetic pole face and right magnetic pole face, the rotor subassembly periphery is by a plurality of left magnetic pole faces, middle magnetic pole face and right magnetic pole face interval surround, its characterized in that: the ratio of the width L1 of the middle pole face to the width L2 of the middle pole arm of all E-shaped stator cores is in the following range: L1/L2 is more than or equal to 1 and less than or equal to 1.3.

The left pole arm and the right pole arm on all the E-shaped stator cores are in asymmetric structures.

The left pole arm and the right pole arm are asymmetric structures, and the width L3 of the left pole arm close to the yoke is larger than the width L4 of the right pole arm close to the yoke, or the width L3 of the left pole arm close to the yoke is smaller than the width L4 of the right pole arm close to the yoke.

And a first air gap, a second air gap and a third air gap are respectively formed between the left magnetic pole surface, the middle magnetic pole surface and the right magnetic pole surface and the periphery of the rotor assembly, and the first air gap, the second air gap and the third air gap are all uneven air gaps.

The first air gap, the second air gap and the third air gap are progressive air gaps, and the first air gap, the second air gap and the third air gap gradually decrease from large to small along the counterclockwise direction by taking the rotor assembly as a center.

The structures of the adjacent E-shaped stator cores are the same or different.

The plurality of E-shaped stator cores are 4 blocks.

The left magnetic pole face, the middle magnetic pole face and the right magnetic pole face at the end parts of the left pole arm, the middle pole arm and the right pole arm are cambered surfaces.

The yoke part is provided with mounting bosses protruding from the outer edges of the left pole arm and the right pole arm.

The width L2 of the middle pole arm is greater than the width L3 of the left pole arm close to the yoke, and the width L2 of the middle pole arm is greater than the width L4 of the right pole arm close to the yoke.

Compared with the prior art, the utility model, following effect has:

1) the utility model discloses a novel motor structure, including the rotor subassembly, stator module and coil winding, stator module includes a plurality of blocks circumference evenly distributed's E shape stator core, a plurality of blocks E shape stator core distribute in the rotor subassembly periphery, E shape stator core includes yoke portion and the left polar arm that stretches out from yoke portion, middle polar arm and right polar arm, coil winding is convoluteed on middle polar arm or is convoluteed simultaneously on left polar arm and right polar arm, left polar arm, the tip of middle polar arm and right polar arm forms left magnetic pole face respectively, middle magnetic pole face and right magnetic pole face, the rotor subassembly periphery is surrounded by a plurality of left magnetic pole faces, middle magnetic pole face and right magnetic pole face interval, its characterized in that: the ratio of the width L1 of the middle pole face to the width L2 of the middle pole arm of all E-shaped stator cores is in the following range: L1/L2 is more than or equal to 1 and less than or equal to 1.3. The structure meets the production process foundation of the motor stator, is simple in structure and reasonable in structural arrangement, reduces the winding difficulty of the stator iron core during winding, and ensures the qualification rate of products;

2) other advantages of the present invention will be described in detail in the examples section.

Description of the drawings:

figure 1 is a schematic diagram of a new motor construction previously developed by the applicant;

FIG. 2 is a schematic structural view of the E-shaped core of FIG. 1;

fig. 3 is a schematic structural diagram of a first embodiment of the present invention;

FIG. 4 is an enlarged view of part A of FIG. 3;

fig. 5 is a schematic structural diagram after dimension marking according to an embodiment of the present invention;

fig. 6 is another implementation structure diagram provided in the first embodiment of the present invention;

fig. 7 is a third implementation structural diagram provided in the first embodiment of the present invention;

fig. 8 is a schematic diagram provided in the second embodiment of the present invention;

fig. 9 is a partial enlarged view of B in fig. 8;

fig. 10 is a schematic structural diagram of a second embodiment of the present invention;

the specific implementation mode is as follows:

the present invention will be described in further detail with reference to the following detailed description of preferred embodiments and accompanying drawings.

The first embodiment is as follows:

as shown in fig. 3 to 5, the present embodiment provides a novel motor structure, which includes a rotor assembly 3, a stator assembly and a coil winding 2, wherein the stator assembly includes a plurality of circumferentially uniformly distributed E-shaped stator cores 10, the plurality of E-shaped stator cores 10 are distributed on the periphery of the rotor assembly 3, the E-shaped stator core 10 includes a yoke portion 11 and a left pole arm 12, a middle pole arm 13 and a right pole arm 14 extending from the yoke portion 11, the coil winding 2 is wound on the middle pole arm 13 or both the left pole arm 12 and the right pole arm 14, in fig. 3, only the structure that the coil winding 2 is wound on the middle pole arm 13 is shown, the end portions of the left pole arm 12, the middle pole arm 13 and the right pole arm 14 respectively form a left magnetic pole face 121, a middle magnetic pole face 131 and a right magnetic pole face 141, the periphery of the rotor assembly 3 is surrounded by a plurality of left magnetic pole faces 121, middle magnetic pole faces 131 and right magnetic pole faces 141 at intervals, and the structure is characterized in that: the ratio of the width L1 of the middle pole face 131 to the width L2 of the middle pole arm 13 of all the E-shaped stator cores 10 is in the following range: L1/L2 is more than or equal to 1 and less than or equal to 1.3. The structure meets the production process foundation of the motor stator, and is simple in structure, reasonable in structural arrangement, convenient for winding and capable of guaranteeing the qualified rate of products.

In fig. 3, L1 ═ L2; the slot openings of two adjacent pole arms on the same E-shaped stator core 10 are wider, and the coil winding 2 is convenient to perform the wire embedding process. The left pole arm 12 and the right pole arm 14 on all the E-shaped stator cores 10 are in an asymmetric structure, the width L3 of the left pole arm 12 close to the yoke part 11 is smaller than the width L4 of the right pole arm 14 close to the yoke part 11, torque pulsation is effectively reduced, and efficiency is improved.

In fig. 6, the width L1 of the middle pole face 131 of the E-shaped stator core 10 is greater than the width L2 of the middle pole arm 13 by a ratio in the following range: L1/L2 is more than or equal to 1 and less than or equal to 1.3. That is, the width L1 of the middle pole face 131 is slightly larger than the width L2 of the middle pole arm 13, but sufficient width of the insertion line is ensured at the slot openings of two adjacent pole arms on the same E-shaped stator core 10. The adjacent E-shaped stator cores 10 have the same structure, so that torque pulsation can be effectively reduced, and efficiency is improved.

In fig. 7, the structures of the adjacent E-shaped stator cores 10 are different, so that torque ripple can be effectively reduced, and efficiency can be improved.

The left pole arm 12 and the right pole arm 14 on all the E-shaped stator cores 10 are of asymmetric structures, so that torque pulsation is effectively reduced, and the motor efficiency is improved.

The left pole arm 12 and the right pole arm 14 are asymmetric, that is, the width L3 of the left pole arm 12 close to the yoke 11 is smaller than the width L4 of the right pole arm 14 close to the yoke 11, so that torque pulsation can be reduced, and the motor efficiency can be improved.

A first air gap 122, a second air gap 132 and a third air gap 142 are respectively formed between the left magnetic pole surface 121, the middle magnetic pole surface 131 and the right magnetic pole surface 141 and the periphery of the rotor assembly 3, and the first air gap 122, the second air gap 132 and the third air gap 142 are uneven air gaps, so that the electromagnetic performance is improved.

The first air gap 122, the second air gap 132 and the third air gap 142 are progressive air gaps, and the first air gap 122, the second air gap 132 and the third air gap 142 gradually decrease from large to small along the counterclockwise direction by taking the rotor assembly 3 as the center, so that the electromagnetic performance is ensured, the performance of the motor is optimized, and the starting reliability of the motor can be enhanced.

As shown in fig. 6, adjacent E-shaped stator cores 10 may be identical; as shown in fig. 7, adjacent E-shaped stator cores 10 may not be identical.

The E-shaped stator cores 10 are 4, so that the structure is simple, the layout is better, the magnetic coupling of the stator and the rotor is more uniform, and the control is simpler.

The left magnetic pole face 121, the middle magnetic pole face 131 and the right magnetic pole face 141 at the end parts of the left pole arm 12, the middle pole arm 13 and the right pole arm 14 are cambered surfaces, and can be better matched with the circular surface of the rotor, so that the air gap magnetic field is more uniform.

The installation bosses 111 are protruded on the outer side edges of the yoke part 11, which are positioned on the left pole arm 12 and the right pole arm 14, so that the E-shaped stator core is conveniently matched with the insulating stator framework, the positioning effect is good, and the structure is firm.

The width L2 of the middle pole arm 13 is greater than the width L3 of the left pole arm 12 close to the yoke 11, the width L2 of the middle pole arm 13 is greater than the width L4 of the right pole arm 14 close to the yoke 11, and the structure is simple and the layout is reasonable.

Example two:

as shown in fig. 8 to 10, the present embodiment is a modification of the first embodiment, the left pole arm 12 and the right pole arm 14 are asymmetric, and the width L3 of the left pole arm 12 near the yoke 11 is greater than the width L4 of the right pole arm 14 near the yoke 11, so that torque ripple can be reduced and motor efficiency can be improved.

The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited thereto, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention are equivalent replacement modes, and are all included in the scope of the present invention.

Claims

1. A novel motor structure comprises a rotor assembly (3), a stator assembly and a coil winding (2), wherein the stator assembly comprises a plurality of E-shaped stator cores (10) which are uniformly distributed in the circumferential direction, the E-shaped stator cores (10) are distributed on the periphery of the rotor assembly (3), the E-shaped stator cores (10) comprise a yoke part (11), a left polar arm (12), a middle polar arm (13) and a right polar arm (14) which extend from the yoke part (11), the coil winding (2) is wound on the middle polar arm (13) or simultaneously wound on the left polar arm (12) and the right polar arm (14), the end parts of the left polar arm (12), the middle polar arm (13) and the right polar arm (14) respectively form a left magnetic pole face (121), a middle magnetic pole face (131) and a right magnetic pole face (141), the periphery of the rotor assembly (3) is surrounded by the left magnetic pole face (121), the middle magnetic pole face (131) and the right magnetic pole face (141) at intervals, the method is characterized in that: the ratio of the width L1 of the middle pole face (131) of all the E-shaped stator cores (10) to the width L2 of the middle pole arm (13) is in the following range: L1/L2 is more than or equal to 1 and less than or equal to 1.3.

2. The novel motor structure of claim 1, wherein: the left pole arm (12) and the right pole arm (14) on all the E-shaped stator cores (10) are in an asymmetric structure.

3. The novel motor structure of claim 2, wherein: the left polar arm (12) and the right polar arm (14) are asymmetric structures, namely the width L3 of the left polar arm (12) close to the yoke part (11) is larger than the width L4 of the right polar arm (14) close to the yoke part (11), or the width L3 of the left polar arm (12) close to the yoke part (11) is smaller than the width L4 of the right polar arm (14) close to the yoke part (11).

4. A novel machine structure as claimed in claim 1, 2 or 3, characterized in that: a first air gap (122), a second air gap (132) and a third air gap (142) are respectively formed between the left magnetic pole surface (121), the middle magnetic pole surface (131) and the right magnetic pole surface (141) and the periphery of the rotor assembly (3), and the first air gap (122), the second air gap (132) and the third air gap (142) are all uneven air gaps.

5. The novel motor structure of claim 4, wherein: the first air gap (122), the second air gap (132) and the third air gap (142) are progressive air gaps, and the first air gap (122), the second air gap (132) and the third air gap (142) gradually decrease from large to small along the counterclockwise direction by taking the rotor assembly (3) as a center.

6. A novel motor construction in accordance with claim 3, wherein: the structures of the adjacent E-shaped stator cores (10) are the same or different.

7. The novel motor structure of claim 4, wherein: the number of E-shaped stator cores (10) is 4.

8. The novel motor structure of claim 4, wherein: the left magnetic pole surface (121), the middle magnetic pole surface (131) and the right magnetic pole surface (141) at the end parts of the left pole arm (12), the middle pole arm (13) and the right pole arm (14) are cambered surfaces.

9. The novel motor structure of claim 4, wherein: the yoke (11) is provided with mounting bosses (111) which are arranged on the outer side edges of the left polar arm (12) and the right polar arm (14) in a protruding mode.

10. The novel motor structure of claim 4, wherein: the width L2 of the middle pole arm (13) is larger than the width L3 of the left pole arm (12) close to the yoke part (11), and the width L2 of the middle pole arm (13) is larger than the width L4 of the right pole arm (14) close to the yoke part (11).