CN209676017U - A kind of stator structure and motor - Google Patents

Abstract

Stator structure provided by the utility model, comprising: the stator yoke of annular stator teeth, winding and annular；The stator teeth includes connection ring, multiple stator tooths are arranged at intervals with extending upwardly and outwardly direction the week of the connection ring, the end face of each one end of the stator tooth far from the connection ring is equipped with an interconnecting piece, and forms slot for winding between every two stator tooth；The winding technique is placed in the slot for winding on the stator tooth, and the stator yoke inner peripheral surface is equipped with multiple mounting portions, and an interconnecting piece is connect with a mounting portion.The larger of the notch of slot for winding on stator teeth setting so as to ensure the copper factor of the slot for winding, and then can be further increased electric efficiency by this kind of stator structure.Meanwhile the stator structure, after the stator teeth is mounted in the stator yoke, the slot for winding is closed slot, so as to effectively reduce the torque pulsation of slot for winding, and can reduce the vibration of motor, to reduce noise.

Description

A kind of stator structure and motor

Technical field

The utility model relates to technical field of motors, it is related specifically to a kind of stator structure and motor.

Background technique

In the prior art, permanent magnet synchronous motor includes motor stator and rotor, wherein the tooth and yoke of motor stator Be an integral structure, form slot for winding between tooth and tooth, be formed separately winding notch between tooth tip and tooth tip, the armature of motor around Group passes through winding notch around the home on the stator teeth.In order to meet automation coiling winding, the winding notch on stator is bigger, from Winding notch to the slot for winding bottom of the radial direction along winding notch part all can not coiling winding, and winding intersect so that Winding displacement is irregular, causes the copper factor of the slot for winding on stator low, and electric efficiency can not further increase, the power density of motor It can not further increase.In addition, this kind of stator structure but also the winding notch on motor stator is bigger, leads to air gap flux density Harmonic content height and the cogging torque pulsation of waveform are big, and the vibration of motor is big, and noise is big.And in order to further increase on stator The utilization rate of slot for winding, electromagnetic wire needs to use flat wire, so as to improve electric efficiency and power density, but current permanent magnetism The tooth and yoke of the stator of synchronous motor are an integral structure, and flat wire is directly around on the stator teeth, it may appear that flat wire knob leads to flat wire Misaligned, winding overhang is high, and flat wire knob is easy to appear insulation breakdown and makes motor coiling winding manufacture yields low, because This flat wire can not directly around the home on the stator teeth.And flat wire uses form-wound coils, straight cutting is to solve flat wire application on the stator teeth Better method, but need new stator structure.

Therefore, how to propose that a kind of copper factor for making stator winding slot is high, and electric efficiency can be made high, with small vibration, make an uproar The small motor stator of sound becomes current urgent problem to be solved.

Utility model content

The purpose of this utility model is to provide a kind of stator structure, to solve the slot for winding of stator in the prior art The low problem of copper factor.

The utility model provides a kind of stator structure, comprising:

Annular stator teeth, the stator teeth include connection ring and the connection ring circumferential direction and extend outwardly The spaced multiple stator tooths in direction, and slot for winding is formed between the two neighboring stator tooth；

Winding, the winding technique is on the stator tooth and part is placed in the slot for winding；And

The stator yoke of annular, the stator yoke are detachably connected with the stator teeth.

Optionally, in the stator structure, the stator yoke is an integral structure.

Optionally, in the stator structure, the stator yoke inner peripheral surface is equipped with multiple mounting portions, each described fixed The end face of the one end of sub- tooth far from the connection ring is equipped with an interconnecting piece, the quantity of the mounting portion and the interconnecting piece Quantity is identical, wherein an interconnecting piece is connect with a mounting portion.

Optionally, in the stator structure, shape of the interconnecting piece along the section of the stator teeth axial direction is flat Face or cambered surface, the mounting portion is along the shape in the section of the stator yoke axial direction and the interconnecting piece along stator teeth axial direction The shape in section is mutually matched.

Optionally, in the stator structure, the mounting portion is mounting groove, and the interconnecting piece is lug boss, described convex The portion of rising is inserted into the mounting groove.

Optionally, in the stator structure, the mounting groove inner sidewall be equipped with flange, the lug boss side wall be equipped with The matched groove of flange, the flange are arranged in the groove.

Optionally, in the stator structure, the flange and the groove are interference fitted.

Optionally, in the stator structure, the stator tooth is an integral molding structure with the connection ring.

Optionally, in the stator structure, the stator teeth includes along axially stacked multiple of the stator structure Silicon steel sheet.

On the other hand, present invention also provides a kind of motor, the motor includes stator structure and rotor structure, described fixed Minor structure includes the stator yoke and winding of the stator teeth of annular, annular, and the stator teeth includes connection ring and in institute It states the circumferential direction of connection ring and the spaced multiple stator tooths in the direction that extends outwardly, and is formed between the two neighboring stator tooth Slot for winding；The winding technique is on the stator tooth and part is placed in the slot for winding；The stator yoke with it is described Stator teeth is detachably connected；Wherein, the rotor structure can be rotated relative to the stator structure.

Compared with the prior art, stator structure provided by the present application, due to the interconnecting piece and stator yoke on stator teeth On mounting portion connection, the stator teeth and the stator yoke are split type structure, and stator structure may be implemented in this way Winding, therefore, in coiling winding, can first be wrapped on the stator tooth of stator teeth, then again by stator yoke by the separation of tooth yoke Portion is sleeved on outside stator teeth.This kind of stator structure, since the notch of slot for winding is the stator tooth as described in every two far from described Composed by one end of connection ring, the notch of the slot for winding of stator teeth can be arranged it is larger, so as to ensure it is described around The copper factor of group slot, and then electric efficiency can be further increased.Meanwhile the stator structure is mounted on institute in the stator teeth After stating in stator yoke, the slot for winding is closed slot, so as to effectively reduce the torque pulsation of slot for winding, and be can reduce The vibration of motor, to reduce noise.

Detailed description of the invention

Fig. 1 is the stator structure schematic diagram of the embodiment of the present application；

Fig. 2 is the structural schematic diagram of the stator yoke of the embodiment of the present application；

Fig. 3 is the structural schematic diagram of the stator teeth of the embodiment of the present application；

Fig. 4 is the another stator structure schematic diagram of the embodiment of the present application.

Wherein, the reference numerals are as follows by attached drawing 1-4:

10- stator yoke；11- mounting portion；11a- flange；The outer peripheral surface of 12- stator yoke；20- stator teeth；21- is fixed Sub- tooth；21a- interconnecting piece；21b- groove；22- connection ring；23- slot for winding.

Specific embodiment

To keep the purpose of this utility model, advantages and features clearer, below in conjunction with attached drawing 1-4 the utility model proposes Stator structure be described in further detail.It should be noted that attached drawing is all made of very simplified form and using non-accurate Ratio, only to it is convenient, lucidly aid in illustrating the purpose of the utility model embodiment.

Refering to fig. 1-3, this application provides a kind of stator structures, comprising: annular stator teeth 20, winding are (in figure not Show) and annular stator yoke 10；The stator yoke 10 is detachably connected with the stator teeth 20；The stator tooth Portion 20 includes connection ring 22, and is arranged at intervals with multiple stator tooths in the direction that extends upwardly and outwardly in week of the connection ring 22 21, and slot for winding 23 is formed between every two stator tooth 21；The winding technique is placed in described on the stator tooth 21 In slot for winding 23, wherein the group number of the winding is identical as the quantity of number of the stator tooth 21, winding technique described in one group On having the stator tooth 21.

Since the stator teeth and the stator yoke are split type structure, the tooth yoke point of stator structure may be implemented From first winding can be wound on stator tooth 21 in this way, specifically, the winding is from the stator tooth 21 far from the connection ring 22 one end is initially wrapped around on the stator teeth 20, and stator tooth 21 and connection ring 22 are then inserted into stator yoke together In 10, this makes winding installation operation of the winding on stator tooth 21 more simple and easy, while it is also possible that adjacent two Can have suitable distance between a stator tooth 21, avoid because the spacing of stator tooth 21 it is excessive caused by magnetic pressure drop it is excessively high and Because coiling winding difficulty is high caused by the spacing between stator tooth 21 is too small, solve the problems, such as that torque pulsation is big and coiling winding.

It is described fixed since the mounting portion 11 on the interconnecting piece 21a and the stator yoke 10 on the stator tooth 21 connects Sub- teeth portion 20 is split type structure with the stator yoke 10, and the tooth yoke separation of stator structure may be implemented in this way, therefore, around When winding processed, first winding can be wrapped on the stator tooth 21 of stator teeth 20, stator yoke 10 is then being sleeved on stator Outside teeth portion 20.This kind of stator structure, since the notch of slot for winding 23 is the stator tooth 21 as described in every two far from the connection ring It, in this way can be by the larger of the notch of the slot for winding 23 on stator teeth 20 setting, so as to ensure composed by 22 one end The copper factor of the slot for winding 23, and then electric efficiency can be further increased.Meanwhile the stator structure is in the stator teeth After 20 are mounted in the stator yoke 10, the slot for winding 23 is closed slot, so as to effectively reduce the slot for winding 23 Torque pulsation, so as to reduce the vibration of motor, to reduce noise.

Wherein, the stator yoke 10 is an integral structure, i.e., the described stator yoke 10 is in a monolith silicon at the time of molding It is disposably formed on steel disc, in this way, the outer peripheral surface 12 of the stator yoke can play the role of inner water sleeve, " the stator yoke The outer peripheral surface 12 " in portion refers to one side of the stator yoke 10 far from the stator teeth 20, the outer peripheral surface of the stator yoke 12 directly can carry out receiving coolant liquid with the cooperation of outer water jacket, be arranged inner water sleeve in the stator yoke 10 without additional, Not only can save the cost, the diameter of the stator structure can also be reduced, further, since coolant liquid directly contacts institute Stator yoke 10 is stated, so coolant liquid can directly cool down stator structure, improves cooling effect.Certainly, described fixed Sub- 10 material therefor of yoke portion is not limited to silicon steel sheet, is also possible to iron block or other permeability magnetic materials.

Wherein, the end face of the one end of each stator tooth 21 far from the connection ring 22 is equipped with an interconnecting piece 21a, 10 inner peripheral surface of stator yoke is equipped with multiple mounting portions 11, and " 10 inner peripheral surface of stator yoke " refers to the stator yoke 10 close to the face of the stator teeth 20, and the quantity of the mounting portion 11 is identical as the quantity of the interconnecting piece 21a, described in one Interconnecting piece 21a is connect with a mounting portion 11.

Shape of the interconnecting piece 21a along the axial section of the stator teeth 20 is a plane or an arc surface, the mounting portion 11 section axial along the stator teeth 20 along the shape in the axial section of the stator yoke 10 and the interconnecting piece 21a The shape in face is mutually matched.Preferably, as shown in figure 3, the end of the stator tooth 21 cutting along 20 axial direction of stator teeth The shape in face is plane, i.e., the described interconnecting piece 21a is plane along the axial section of the stator teeth 20, the mounting portion 11 Axial along the stator teeth 20 along the shape in the axial section of the stator yoke 10 and the end of the stator tooth 21a The shape in section is mutually matched, so the shape along the axial section of the stator yoke 10 of the mounting portion 11 is plane. Certainly, shape of the interconnecting piece 21a along the axial section of the stator teeth 20 may be cambered surface.Using the mounting portion 11 shape along the axial section of the stator yoke 10 is with the interconnecting piece 21a along the axial section of the stator teeth 20 The structure that is mutually matched of shape, the stator tooth 21 can either be made to cooperate with the stator yoke 10 more preferable, and can make The stator tooth 21 cooperates with the stator yoke 10 to be made using the high punching of same silicon steel plate progress to realize interference fit.

Preferably, the mounting portion 11 is mounting groove, and the interconnecting piece 21a is lug boss, and the lug boss is inserted into institute It states in mounting groove.The mounting groove inner sidewall is equipped with flange 11a, and the lug boss side wall is equipped with to be adapted with the flange 11a Groove 21b, the flange 11a is arranged in the groove 21b, and the flange 11a is arranged in the groove 21b.Such as This, the flange 11a is fitted into the groove 21b, is avoided that the stator teeth 20 is detached from from the stator yoke 10 Out.Preferably, mounting groove inner sidewall two sides are equipped with the flange 11a, i.e., the described mounting groove two sidewalls are equipped with described Flange 11a prevents the stator teeth 20 from deviating from from the mounting groove of the stator yoke 10 in this way, and it is described fixed to make to connect The connection effect of sub- teeth portion 20 and the stator yoke 10 is more preferable, stronger.

Likewise it is preferred that in this case can make being arranged to be interference fitted between the flange 11a and the groove 21b Cooperate between the stator teeth 20 and the stator yoke 10 it is even closer, so as to further increase the slot for winding 23 copper factor, and then electric efficiency can be further increased, the vibration of motor is reduced, to reduce noise.

The outer peripheral surface of the stator teeth 20 is provided with insulating layer (not shown), i.e., on 20 surface of stator teeth On be provided with insulating layer, the outer peripheral surface of the stator teeth 20 includes the surface of the stator tooth and the appearance of the connection ring Face.The stator teeth 20 can be made of metal or alloy material, and winding is made of conductive material, such as copper, aluminium etc., " outer peripheral surface of the stator teeth 20 " refers to the contact surface of the stator teeth 20 and the winding.In order to guarantee the stator It is non-conductive between teeth portion 20 and the winding, it needs that insulating layer is arranged on the outer peripheral surface of the stator teeth 20, so that described Stator teeth 20 avoids leaking electricity with winding insulation.In addition, the surface of the interconnecting piece 21a is not provided with insulating layer, described in guarantee It being capable of magnetic conduction between stator teeth 20 and stator yoke 10.

Preferably, the stator teeth 20 is formed by connecting along axially stacked multiple silicon steel sheets；All stator tooths 21 An entirety is connected to form by the connection ring 22.Further, the shape of each silicon steel sheet can be with the stator tooth The cross sectional shape perpendicular to axial direction in portion 20 is corresponding, and silicon steel sheet can be by being welded to connect, or in the silicon steel of stacking On piece (20 position of stator teeth) is by being stamped and formed out lug boss, i.e., each silicon steel sheet is protruded to same direction, as plate Also recess can be formed on opposite surface, the protrusion of each silicon steel sheet can be installed in the recess of adjacent silicon steel sheet, To which multiple silicon steel sheets be linked together.

Wherein, refering to Fig. 4, some silicon steel sheets can correspond to the connection ring 22 between two stator tooths 21 Position forms notch, to form radial through-hole.Part setting of the connection ring 22 between two adjacent stator tooths 21 There is radial through-hole.Winding is wound around the stator tooth 21, and the magnetic induction line formed after energization can be across in the outside of the winding The connection ring 22 forms notch in the connection ring 22 between two adjacent stator tooths 21, can also will be adjacent Two stator tooths 21 between the connection ring 22 interrupt, therefore, can this position be arranged radial through-hole, with reduce described in Influence of the connection ring 22 to magnetic induction line reduces leakage field.

Preferably, the stator tooth 21 is an integral molding structure with the connection ring 22.As shown in Fig. 1-3, the stator Tooth 21 and connection ring 22 are formed as one molding structure, specifically refer to the stator tooth 21 on each silicon steel sheet and connect It connects ring 22 to be an integral molding structure, connects to form the stator teeth 20 along axially stacked multiple silicon steel sheets, not only may be used in this way Synchronously the stator teeth 20 to be mounted in the stator yoke 10, or by the stator teeth 20 from the stator yoke It is synchronously extracted out in portion 10, it can also be ensured that the circularity of all stator tooths 21 after installing.

On the other hand, the utility model additionally provides a kind of motor, the motor include above-mentioned annular stator structure and The rotor structure of annular, the stator structure include stator teeth and stator yoke, the stator teeth and the stator yoke Connection, the stator teeth includes connection ring and stator tooth, and the stator tooth is an integral structure with the connection ring, and described Connection ring has centre bore to accommodate the rotor structure, and rotor structure can be rotated relative to stator structure, such as In the case that the winding of stator structure is powered, and in order to reduce leakage field, the connection ring between every two stator tooth can be interrupted.

Since the motor includes the stator structure, since the notch of slot for winding is that the stator tooth as described in every two is separate It, can be by the larger of the notch of the slot for winding of stator teeth setting, so as to true composed by one end of the connection ring The copper factor of the slot for winding is protected, and then electric efficiency can be further increased.Meanwhile the stator structure is in the stator teeth After being mounted in the stator yoke, the slot for winding is closed slot, so as to effectively reduce the torque pulsation of slot for winding, again It can reduce the vibration of motor, to reduce noise.

Foregoing description is only the description to the utility model preferred embodiment, not to any limit of the scope of the utility model Fixed, any change, the modification that the those of ordinary skill in the utility model field does according to the disclosure above content belong to right and want Seek the protection scope of book.

Claims (10)

1. a kind of stator structure characterized by comprising

The stator teeth of annular, the stator teeth includes connection ring and the circumferential direction in the connection ring and the direction that extends outwardly Spaced multiple stator tooths, and slot for winding is formed between the two neighboring stator tooth；

Winding, the winding technique is on the stator tooth and part is placed in the slot for winding；And

The stator yoke of annular, the stator yoke are detachably connected with the stator teeth.

2. stator structure according to claim 1, which is characterized in that the stator yoke is an integral structure.

3. stator structure according to claim 1, which is characterized in that the stator yoke inner peripheral surface is equipped with multiple installations The end face in portion, each one end of the stator tooth far from the connection ring is equipped with an interconnecting piece, the quantity of the mounting portion It is identical as the quantity of the interconnecting piece, wherein an interconnecting piece is connect with a mounting portion.

4. stator structure according to claim 3, which is characterized in that the interconnecting piece section axial along the stator teeth The shape in face is a plane or an arc surface, and the mounting portion is along the shape in the section of the stator yoke axial direction and the interconnecting piece along fixed The shape in the section of sub- teeth portion axial direction is mutually matched.

5. stator structure according to claim 3, which is characterized in that the mounting portion is mounting groove, and the interconnecting piece is Lug boss, the lug boss are inserted into the mounting groove.

6. stator structure according to claim 5, which is characterized in that the mounting groove inner sidewall is equipped with flange, described convex It plays portion's side wall and is equipped with and be arranged in the groove with the matched groove of the flange, the flange.

7. stator structure according to claim 6, which is characterized in that the flange and the groove are interference fitted.

8. stator structure according to claim 1, which is characterized in that the stator tooth is integrally formed with the connection ring Structure.

9. stator structure according to claim 1, which is characterized in that the stator teeth includes along the stator structure axis To multiple silicon steel sheets of stacking.

10. a kind of motor, which is characterized in that the motor includes stator structure and rotor structure, and the stator structure includes ring The stator teeth of shape, the stator yoke of annular and winding, the stator teeth include connection ring and the week in the connection ring To and the spaced multiple stator tooths in the direction that extends outwardly, and form slot for winding between the two neighboring stator tooth；It is described Winding technique is on the stator tooth and part is placed in the slot for winding；The stator yoke and the stator teeth are removable Unload connection；Wherein, the rotor structure can be rotated relative to the stator structure.