CN211790978U

CN211790978U - Novel disc iron core structure and disc motor

Info

Publication number: CN211790978U
Application number: CN202020702033.1U
Authority: CN
Inventors: 夏莉
Original assignee: Shanghai Panhu Power Technology Co ltd
Current assignee: Shanghai Panhu Power Technology Co ltd
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2020-10-27
Anticipated expiration: 2030-04-30

Abstract

This scheme provides a novel disk iron core structure, comprises a holistic iron core and a plurality of independent coil skeleton of rolling up, and earlier with winding coil coiling shaping back on coil skeleton, assemble the coil skeleton again to around each tooth of rolling up the iron core, the notch between two adjacent teeth forms half open slot rather than the coil skeleton that corresponds jointly. This novel disk iron core structure adopts the sectional type structure, has realized directly winding on the coil skeleton, is convenient for lower line, simplifies the winding technology to have the good electromagnetic property of half closed slot structure. This scheme still provides a disc motor who has above-mentioned novel disc iron core structure.

Description

Novel disc iron core structure and disc motor

Technical Field

The utility model belongs to the technical field of the motor, in particular to novel disc iron core structure and disc motor.

Background

For most of the iron cores of the disc motors at present, silicon steel sheets, amorphous alloys, powder metallurgy and other types of magnetic conductive alloy materials are generally used and manufactured by adopting stamping and winding processes. The slot type of the disc iron core is similar to that of a conventional radial magnetic field motor and comprises an open slot, a semi-open slot and a closed slot. The closed slots are rarely used in the stator core. The open slot is easy to be off-line, but the electromagnetic performance of the motor is poor, the air gap harmonic of the motor is increased, larger cogging torque and torque ripple are caused, the loss of the motor is increased, and the performance and the efficiency of the motor are reduced. For the open slot, can also adopt the magnetic slot wedge, the magnetic slot wedge can reduce the air gap harmonic of motor from a certain extent, but the magnetic conductivity of magnetic slot wedge on the one hand is lower, and the improvement degree is very limited. Also, large leakage flux and leakage inductance may result in large current flows through the motor. Most of iron cores adopt a semi-closed slot, the electromagnetic performance is good, but the slot type is difficult to coil, and flat copper wires or formed coils made of the flat copper wires are difficult to use.

Therefore, the problem to be solved by those skilled in the art needs to be solved how to provide a disc-type iron core structure, which not only has better electromagnetic performance, but also is convenient for coil winding to be taken off line.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel disk iron core structure and disk motor both have better electromagnetic properties, and the winding coil of being convenient for again rolls off the production line.

In order to solve the technical problem, the utility model provides a novel disc-type iron core structure, which comprises a winding iron core and a plurality of coil frameworks;

the winding iron core comprises teeth and a yoke, the longitudinal section of the coil framework is I-shaped, a clamping groove is formed in the axial direction of the coil framework, the middle connecting section of the coil framework is used for arranging a winding coil, the clamping groove of the coil framework is sleeved on the teeth, and the coil framework corresponds to the teeth one by one;

and the notch between two adjacent teeth and the coil framework corresponding to the notch form a half-open slot together.

Preferably, in the above novel disc-type iron core structure, the coil bobbin is made of pressed high-permeability iron powder.

Preferably, in the above novel disc-type iron core structure, the clamping groove is a through groove with openings at both upper and lower end faces of the coil frame.

Preferably, in the above novel disc-type iron core structure, the shape of the inner wall of the through groove of the coil bobbin matches with the teeth.

Preferably, in the above-described novel disc core structure, the bobbin has an insulating outer surface.

Preferably, in the above-described novel disc core structure, a lower end surface of the bobbin is provided with a caulking groove for embedding the yoke.

Preferably, in the above novel disc-type core structure, the wound core is a wound core made by die-stamping winding or wire-cutting a silicon steel sheet, an amorphous alloy, a permalloy or an iron-cobalt alloy strip.

The utility model also provides a disc motor, include as above novel disc iron core structure.

This scheme provides a novel disk iron core structure, constitutes by a holistic iron core and a plurality of independent coil skeleton of rolling up, and the coiling shaping back on coil skeleton of winding coil earlier, on assembling each tooth around rolling up the iron core with coil skeleton again, notch between two adjacent teeth rather than corresponding coil skeleton forms half open slot jointly. This novel disk iron core structure adopts the sectional type structure, has realized directly winding on the coil skeleton, is convenient for lower line, simplifies the winding technology to have the good electromagnetic property of half closed slot structure. This scheme still provides a disc motor who has above-mentioned novel disc iron core structure.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a novel disc-type iron core structure provided by the scheme;

fig. 2 is a schematic structural view of a wound iron core according to the present embodiment;

fig. 3 is a schematic structural diagram of a coil bobbin provided by the present scheme;

fig. 4 is a schematic view of a local structure of a winding coil arranged in the novel disc-type iron core structure provided by the present scheme.

In the upper diagram:

a wound core 1, teeth 101, yoke 102; the coil bobbin 2, the tooth 201, the yoke 202, the half slot a 2031, the half slot b2032 and the inner wall 204; a winding coil 3.

Detailed Description

The core of the utility model is to provide a novel disk iron core structure and disk motor both have better electromagnetic property, and the winding coil of being convenient for again rolls off the production line.

In order to make those skilled in the art better understand the technical solutions provided by the present invention, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1-4, the present invention provides a novel disc-type iron core structure, which includes a winding iron core 1 and a plurality of coil frames 2, the winding iron core 1 includes teeth 101 and yokes 102, the longitudinal section of the coil frame 2 is i-shaped and has a slot axially, the middle connection section of the coil frame 2 is used for setting a winding coil 3, the slot of the coil frame 2 is sleeved on the teeth 101 of the winding iron core 1, and the coil frame 2 corresponds to the teeth 101 in number one-to-one. The slot between two adjacent teeth 101 forms a half-open slot together with the corresponding bobbin 2.

It should be noted that the i-shaped structural shape of the bobbin 2 is similar to that of an i-steel, and includes an upper end surface, a lower end surface and a middle connecting section. The upper end surfaces of the bobbin 2 are the half slot a 2031 and the half slot b2032 in the figure, and the half slots of the adjacent bobbin 2 have a certain gap. The middle connecting section of the coil framework 2 is the tooth part 201 in the figure, before the winding iron core 1 and the coil framework 2 are assembled, the coil is wound at the middle connecting section, the winding of the coil can be conveniently and quickly realized through a specific winding machine, and the coil can be fixed on the upper end face and the lower end face of the coil to prevent the coil from falling off. The lower end surface of the bobbin 2 is a yoke 202 in the figure, and is attached to the yoke 102 of the wound core 1, and the yokes 202 of the adjacent bobbins 2 are connected.

The coil framework 2 is provided with a half-slot structure at the top of the teeth 101, the wound iron core 1 is coated in the slot of the wound iron core 1 and the circumferential surface of the wound iron core, and the teeth and the yoke of the two parts jointly form the teeth and the yoke of the novel disc-type iron core structure. The bobbin and the wound core are formed as a single body and have a semi-closed slot structure as finally required.

The novel disc iron core structure that this scheme provided comprises a holistic winding iron core 1 and a plurality of independent coil skeleton 2, and earlier with winding coil 3 coiling shaping back on coil skeleton 2, assemble coil skeleton 2 again on each tooth 101 around winding iron core 1, the notch between two adjacent teeth 101 forms half open slot rather than coil skeleton 2 that corresponds jointly. This novel disk iron core structure adopts the sectional type structure, has realized directly winding on coil skeleton 2, is convenient for lower line, simplifies the winding technology to have the good electromagnetic property of half closed slot structure.

In the specific embodiment, the coil bobbin 2 is made of high-permeability iron powder through pressing. The magnetic core is made of iron powder coated by special insulating materials through pressing, and can be manufactured into flexible shapes according to actual requirements.

The wound core 1 may be manufactured by die-punch winding or wire cutting a silicon steel sheet, an amorphous alloy, a permalloy, or an iron-cobalt alloy strip.

In a specific embodiment, the clamping groove is a through groove with openings at both the upper end surface and the lower end surface of the coil framework 2. The upper end surface of the bobbin 2 is flush with the upper end surfaces of the teeth 101 of the wound core 1. Of course, the clamping groove may also be a groove with a closed upper end surface and an open lower end surface of the coil bobbin 2.

In order to improve the connection stability, a bobbin is inserted into each tooth of the wound core, and the through-groove inner wall 204 of the bobbin 2 is shaped to match the tooth 101. After assembly, the through-groove inner wall 204 of the coil bobbin 2 is attached to the side wall of the tooth 101. And the glue can be coated and effectively connected and fixed with the winding iron core during assembly.

Preferably, the bobbin 2 is subjected to an effective insulation treatment such as painting before the winding coil 3 is wound.

In the embodiment, the lower end surface of the bobbin 2 is provided with a caulking groove for fitting the yoke 102, and the yoke portion 202 of the bobbin 2 has a U-shaped configuration and both ends thereof abut on both inner and outer side surfaces of the yoke 102 of the wound core 1.

This scheme still provides a disk motor, including novel disk iron core structure to this novel disk iron core structure is as the novel disk iron core structure as disclosed in the above-mentioned embodiment, consequently, the disk motor that has this novel disk iron core structure also has above-mentioned all technological effects, no longer gives unnecessary detail here one by one.

The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. A novel disc iron core structure is characterized by comprising a wound iron core (1) and a plurality of coil frameworks (2);

the winding iron core (1) comprises teeth (101) and a yoke (102), the longitudinal section of the coil framework (2) is I-shaped, a clamping groove is formed in the axial direction of the coil framework, the middle connecting section of the coil framework (2) is used for arranging a winding coil (3), the clamping groove of the coil framework (2) is sleeved on the teeth (101), and the coil framework (2) corresponds to the teeth (101) one by one;

the notches between two adjacent teeth (101) and the coil frameworks (2) corresponding to the notches form a half-open slot together.

2. The new disc core structure of claim 1, characterized in that the bobbin (2) is a pressed bobbin of high magnetic permeability iron powder.

3. The novel disc-type iron core structure according to claim 1, wherein the clamping groove is a through groove with openings at both upper and lower end faces of the coil bobbin (2).

4. A new disc core structure according to claim 3, characterized in that the shape of the through-slot inner wall of the bobbin (2) matches the teeth (101).

5. A new disc core structure according to claim 1, characterized in that the bobbin (2) has an insulated outer surface.

6. A new disc core structure according to claim 1, characterized in that the lower end face of the bobbin (2) is provided with a caulking groove for embedding the yoke (102).

7. The new disc core structure according to claim 1, characterized in that the wound core (1) is a wound core made by die-punching or wire-cutting a strip of silicon steel sheet, amorphous alloy, permalloy or iron-cobalt alloy.

8. A disc motor comprising a novel disc core structure according to any one of claims 1 to 7.