CN106787291A

CN106787291A - Motor stator core

Info

Publication number: CN106787291A
Application number: CN201710109881.4A
Authority: CN
Inventors: 姚程
Original assignee: TENG HE PRECISION MOTORS (KUNSHAN) CO Ltd
Current assignee: TENG HE PRECISION MOTORS (KUNSHAN) CO Ltd
Priority date: 2017-02-27
Filing date: 2017-02-27
Publication date: 2017-05-31

Abstract

Present invention is disclosed a kind of motor stator core, it includes iron core body, iron core body includes being spliced to form an annulus with complete flute profile by several iron cores product piece, the iron core body includes first end face and second end face, it is formed at the plural stator tooth between the first end face and second end face, and the oblique cogging of each stator tooth both sides is formed at, the oblique cogging of the both sides has two helical teeth groove sidewalls being parallel to each other；The first end face, the vertical plane of second end face have angle with the planar shaped where the helical teeth groove sidewall, the present invention is being spliced to form stator core by the coiling to single iron core body independence, not only coiling is convenient, and save material, simultaneously by the way of oblique cogging coiling, to reduce the torque pulsation of motor, the nominal torque of motor is set to be reduced to 0.7% by original 3%.

Description

Motor stator core

Technical field

The present invention relates to electro-mechanical arts, more particularly, to the stator core used on a kind of motor.

Background technology

Motor stator is the important component of motor, and wherein motor stator includes stator core, stator winding and support Three parts constitute, and traditional stator core is full-circle spray pattern structure, and whole circle is indivisible, and institute is uniform-distribution with full circle The slot number of demand, the traditional stator core make during iron core by several pieces silicon steel plates on punch press direct punching and Into, although it is more quick during stator core is made, but the stator core of full circle is stranded very much during coiling Difficulty, not only wastes material, and the mode of coiling directly influences the operating efficiency of motor.

An existing utility model patent, Patent No. 201020530286.1, patent name is the stator iron of motor Core, discloses stator core, including is carried out assembled in I-shaped stator core main body by several and laminated, wherein, it is described The shape of stator core main body is identical, and generally 36 (but being not limited to 36), the two sides of the stator core main body are same To setting recessed circle or dome respectively, and the recessed circle met in adjacent two stator core main bodys can mutually be patched with dome and is assembled into One stator core of complete annular motor.The utility model uses breakdown structure, and simple structure is easy to make, material The advantages of material utilization rate high dimensional accuracy is high, but this kind of winding mode does not reduce the residual torque of motor, between stator Resistance be not reduced, the nominal torque of motor is reduced to 0.7% by original 3%.

The content of the invention

A kind of defect it is an object of the invention to overcome prior art, there is provided stator core of motor, the stator iron Core includes iron core body, and the iron core body has the first end face and second end face being oppositely arranged, is formed at the first end Plural stator tooth between face and second end face, and it is formed at the oblique cogging of each stator tooth both sides；The both sides of oblique cogging The vertical line of wall and the first end face and second end face forms the angle of certain angle, changes traditional around knot by oblique cogging Structure come reduce motor residual torque and stator between resistance, improve motor operating efficiency, make motor operation more It is smooth, and by iron core body independence coiling, being that manufacturing process more facilitates, and material-saving.

To achieve the above object, the present invention proposes following technical scheme：Including iron core body, the iron core body has phase To first end face and second end face, be formed at the plural stator tooth between the first end face and second end face, and be formed at The oblique cogging of each stator tooth both sides, the oblique cogging of the both sides has two helical teeth groove sidewalls being parallel to each other；It is described Iron core body by several iron cores product piece constitute, the vertical line of the first end face and second end face with where the helical teeth groove sidewall Interplanar shape has angle.

Preferably, the angular range of the angle is 5.0 °~10.0 °.

Preferably, the angle of the angle is 7.4 °.

Preferably, iron core product piece has the inner periphery cambered surface vertical with the first end face and second end face and cylindrical All cambered surfaces, the arc length of the arc length less than excircle cambered surface of the inner periphery cambered surface.

Preferably, the stator tooth is provided with the location hole of insertion.

Preferably, boss and groove, the boss and the groove phase are respectively equipped with the two sides of the iron core product piece Matching, the boss and groove are with the symmetrically arranged oblique cogging in the same side.

Preferably, the excircle cambered surface center line is provided with fixing groove.

Preferably, the adjacent iron core product piece is provided with insulation framework.

Preferably, the insulation framework has the wire casing matched with the oblique cogging.

Preferably, each iron core product piece includes stator tooth described in one and is formed at the described oblique of the stator tooth both sides Teeth groove

The beneficial effects of the invention are as follows：

1st, the residual torque of motor and the resistance of stator elements are reduced, makes the nominal torque of motor by 3% original reduction To 0.7%.

2nd, each individual stator chip independently winds and does not result in that copper cash crust is damaged, and two ends copper cash it is reserved need not A lot, material is saved.

Brief description of the drawings

Fig. 1 is the dimensional structure diagram that iron core of the present invention accumulates piece；

Fig. 2 is the schematic front view that iron core of the present invention accumulates piece；

Fig. 3 is the left view schematic diagram that iron core of the present invention accumulates piece；

Fig. 4 is the structural representation of iron core body of the present invention.

Reference：1st, excircle cambered surface, 2, inner periphery cambered surface, 3, stator tooth, 4, groove, 5, boss, 6, oblique cogging, 7, Fixing groove, 8, location hole, 9, angle, 10, first end face, 11, helical teeth groove sidewall.

Specific embodiment

Below in conjunction with accompanying drawing of the invention, the technical scheme to the embodiment of the present invention carries out clear, complete description.

With reference to shown in Fig. 1 to Fig. 4, disclosed motor stator core, including iron core body, the iron core body With the first end face 10 being oppositely arranged and second end face, iron core body includes that several iron cores accumulate piece, and each iron core product piece includes One stator tooth 3 and the oblique cogging 6 for being formed at the both sides of stator tooth 3, several iron cores product pieces are spliced to form the iron core body of annular shape.Iron Core product piece is that the relative face of each two is one group, including symmetrically arranged first end face 10 with six cubes in face And second end face.The one end open of the oblique cogging 6, and with two helical teeth groove sidewalls 11, two helical teeth groove sidewalls 11 are parallel to each other. Face where helical teeth groove sidewall 11 and the vertical line shape perpendicular to face where first end face 10 and second end face have angle 9.Coiling When, using stator tooth 3 as axle center, oblique cogging 6 as the groove for accommodating coil, by being wound a coiling group.

Preferably, the scope of angle 9 is 5.0 °~10.0 °, and this oblique cogging 6 is not changing the length and width of stator tooth 3 Under can increase magnetic coil, reduce motor residual torque and stator by resistance.The width of the stator tooth 3 is preferably 10mm~13mm.

The inside and outside both ends of the surface that the another set of iron core product piece is relative are arc-shaped, respectively inner periphery cambered surface 2 and outer Circumference cambered surface 1, the wherein width of inner periphery cambered surface 2 are less than excircle cambered surface 1, and inner periphery cambered surface 2 is combined most with excircle cambered surface 1 Good state should control to be less than 0.04 in concentricity.

A preferred embodiment of the present invention, the angle 9 is 7.4 °, to reducing impedance between motor residual torque and stator Power effect is more.The radian of internal and external circumference cambered surface (1,2) is 30 °, and oblique cogging 6 is with the width of conventional stator tooth 3 11.80mm.Stator tooth 3 is provided with location hole 8, and piece positioning superposition is accumulated to each iron core by location hole 8 forms independent iron core Body, while when iron core product piece splices to iron core product piece positioning, while can be carried out after stator core is pressed into pedestal tight Gu, as shown in the figures 1 and 2, a location hole 8 is provided with using stator tooth 3 in the present embodiment, but be not limited to this, it is also possible to Location hole is set up in the both ends of the surface of stator tooth 3, multiple location hole can be set.

Be respectively equipped with boss 5 and groove 4 on the two sides of iron core product piece, the boss and groove with it is symmetrically arranged The oblique cogging on same side, boss 5 and the engageable connection of groove 4, according to the design of boss 5 and groove 4, in splicing During accumulate piece boss 5 and groove 4 by two iron cores cooperation position so that iron core body quickly splices, and positioning is more Precisely, connect more firm.As shown in Figure 2, it is preferred that boss 5 and groove 4 use triangle, in each two iron core body pair Positioning is easier when connecing to buckle, and several iron core bodies are held into tightly circle by special frock.

As shown in figure 1, being additionally provided with fixing groove 7 on the center line of the excircle cambered surface 1 of iron core product piece, installed in stator core It is fixed in motor internal, as shown in Figure 2, it is preferred that fixing groove 7 uses the trapezium structure of one end open, fixed effect More.

The insulation framework (not shown) for insulating, insulation framework are also equipped with oblique cogging 6 on the iron core product piece With the wire casing consistent with the flute profile of oblique cogging 6, oblique cogging 6 is set to obtain more preferable utilization rate.

In stator core manufacturing process of the invention, two skeletons of insulating effect are applied mechanically on each iron core body first, Two skeletons are stitched together, and coil is separated with iron core body, can also use other insulating elements, such as insulating paper.Each bone Frame will be provided with the iron core of insulation framework product piece independent in specific frock with the corresponding flute profile of piece oblique cogging 6 is accumulated with iron core Coiling, the iron core body after by coiling positioned, is mutually butted by the boss 5 and groove 4 of triangle so that adjacent Two oblique coggings 6 are formed and bonded using resistant to elevated temperatures glue between a complete groove, each iron core product piece, by stamping machine Punching press hold tightly to be formed annular shape iron core body, as shown in Figure 4.This kind of winding mode need not reserve more line, such as copper Line, greatlys save material, and can use the independent coiling of specific frock, and coiling is more convenient, the oblique cogging of use Winding mode, makes the utilization rate of oblique cogging higher, and reduce motor residual torque and stator between resistance, make electricity The nominal torque of machine is reduced to 0.7% by original 3%.

Technology contents of the invention and technical characteristic have revealed that as above, but those of ordinary skill in the art still may base Make a variety of replacements and modification without departing substantially from spirit of the present invention in teachings of the present invention and announcement, therefore, the scope of the present invention Should be not limited to the content disclosed in embodiment, and should include various without departing substantially from replacement of the invention and modification, and be this patent Shen Please claim covered.

Claims

1. a kind of motor stator core, it is characterised in that：Including iron core body, the iron core body has first for being oppositely arranged End face and second end face, are formed at the plural stator tooth between the first end face and second end face, and be formed at each described The oblique cogging of stator tooth both sides；The oblique cogging of the both sides has two helical teeth groove sidewalls being parallel to each other；The iron core body It is made up of several iron cores product piece, the vertical line of the first end face and second end face and the interplanar shape where the helical teeth groove sidewall Have angle.

2. motor stator core according to claim 1, it is characterised in that：The angular range of the angle be 5.0 °~ 10.0°。

3. motor stator core according to claim 1, it is characterised in that：The angle of the angle is 7.4 °.

4. the motor stator core according to claim 1,2 or 3 any one, it is characterised in that：The iron core product piece has The inner periphery cambered surface and excircle cambered surface vertical with the first end face and second end face, the arc length of the inner periphery cambered surface is less than The arc length of excircle cambered surface.

5. motor stator core according to claim 1, it is characterised in that：The stator tooth is provided with the positioning of insertion Hole.

6. motor stator core according to claim 1, it is characterised in that：Set respectively on the two sides of the iron core product piece There are boss and groove, the boss and the groove match, the boss and groove exist with the symmetrically arranged oblique cogging The same side.

7. motor stator core according to claim 4, it is characterised in that：The excircle cambered surface center line is provided with solid Determine groove.

8. motor stator core according to claim 1, it is characterised in that：The adjacent iron core product piece is provided with insulation Skeleton.

9. motor stator core according to claim 8, it is characterised in that：The insulation framework has and the oblique cogging The wire casing for matching.

10. motor stator core according to claim 1, it is characterised in that：Each iron core product piece is included described in one Stator tooth and the oblique cogging for being formed at the stator tooth both sides.