CN206195481U - Motor stator shells assembly based on theory of elasticity model carries out recess design - Google Patents
Motor stator shells assembly based on theory of elasticity model carries out recess design Download PDFInfo
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- CN206195481U CN206195481U CN201621135536.5U CN201621135536U CN206195481U CN 206195481 U CN206195481 U CN 206195481U CN 201621135536 U CN201621135536 U CN 201621135536U CN 206195481 U CN206195481 U CN 206195481U
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Abstract
The utility model relates to a motor stator shells assembly based on theory of elasticity model carries out recess design compares the defect of having solved motor stator casing mounting structure and can't having satisfied the in -service use needs with prior art. The utility model discloses a stator and casing, stator interference fit in the casing, be equipped with the recess on the lateral surface of stator, the recess parallels with the axis of stator, and the recess is rectangle based on radially overlooking of stator, and the recess is overlooked based on the axial of stator and is an annular. The utility model discloses an increase the recess design of filling the heat -conducting glue on the stator excircle, guaranteed motor job stabilization nature and security.
Description
Technical field
The utility model is related to motor in electric automobile technical field, and specifically one kind is carried out based on elastic mechanics model
The motor stator casing component of groove design.
Background technology
Under the dual-pressure of " environmental pollution " and " energy crisis ", the new-energy automobile of exploitation energy-conserving and environment-protective has turned into works as
Following developing direction of modern World Auto Industry.Motor as new-energy automobile key components and parts, be promote new-energy automobile
One of core technology of development.
Stator housing unit relies primarily on the magnitude of interference and carries out assembling fixed so as to transmit torsion in current New energy automobile motor
Square, concretely comprise the following steps expands it housing heating first, and stator then is pressed into housing, treats that stator housing unit is cooled to room
Temperature, is fastened by stator with the magnitude of interference of housing contact surface.During motor normal work, by between stator and housing
Static friction offsets the reaction torque of rotor.
The assembling structure and mode have the following disadvantages：
1st, stator and housing fitting surface thermal conductivity factor are low, and radiating effect is poor；2nd, stator and housing fitting surface pass through the magnitude of interference
Gap is also easy to produce between mutual crimp, fitting surface, the stability of assembling is reduced；3rd, stator and housing carry out elastic conjunction,
The circularity of structure is have impact on, the noise and vibration of motor is increased；4th, under the conditions of extremely trembling with fear, housing contract on cooling, now housing
Deformation is pressed further by pole cold purgation with stator fitting surface, is easily split up housing.
Therefore how to design a kind of new assembling structure and ensure that the stability and security of motor work have become urgency
The technical problem that need to be solved.
Utility model content
The purpose of this utility model is cannot to meet reality to solve motor stator casing mounting structure in the prior art
Use the defect for needing, there is provided a kind of motor stator casing component that groove design is carried out based on elastic mechanics model is come on solving
State problem.
To achieve these goals, the technical solution of the utility model is as follows：
A kind of motor stator casing component that groove design is carried out based on elastic mechanics model, including stator and housing, it is fixed
Sub- elastic conjunction in housing,
The lateral surface of the stator is provided with groove, and groove is parallel with the axis of stator, and groove is based on the radial direction of stator
Vertical view is rectangle, and the axial direction that groove is based on stator is overlooked in fan annular.
The quantity of the groove is several, and several grooves are arranged on the lateral surface of stator in circumference in equal parts.
The quantity of the groove is more than 3, and the depth of groove is 1/10th of the stator arc length between adjacent grooves.
Heat-conducting glue is filled with described groove.
Beneficial effect
A kind of motor stator casing component that groove design is carried out based on elastic mechanics model of the present utility model, it is and existing
Technology is designed compared to by increased the groove of filling heat-conducting glue on stator is cylindrical, it is ensured that the stability and peace of motor work
Quan Xing, and the specific design method of groove is given by mechanical model, with simple structure, be easily achieved the characteristics of.
It has advantages below：
1st, by the design of heat-conducting glue in groove so that it possesses excellent heat conductivility, stator and housing can be improved
Thermal contact resistance；
2nd, after stator and housing elastic conjunction, contact surface is mutually extruded, and part heat-conducting glue can be extruded and enter into contact surface
Gap in, increase effective contact area, the connection consolidated between stator and housing and radiating effect；
3rd, heat-conducting glue has good shock resistance and absorbing, is conducive to reducing the noise and vibration of motor；
4th, under the conditions of extremely trembling with fear, housing shrinkage extruding stator, now groove reserved certain deformation space for stator, reduce
Because interference fit causes the risk that housing is split up.
Brief description of the drawings
Fig. 1 is radial structure schematic diagram of the present utility model；
Fig. 2 is the A-A of Fig. 1 to structure sectional view；
Fig. 3 is the method precedence diagram involved by the utility model；
Wherein, 1- stators, 2- housings, 3- heat-conducting glues, 4- grooves.
Specific embodiment
To make have a better understanding and awareness to architectural feature of the present utility model and the effect reached, to compared with
Good embodiment and accompanying drawing coordinate detailed description, are described as follows：
As depicted in figs. 1 and 2, a kind of motor that groove design is carried out based on elastic mechanics model described in the utility model
Stator case component, including stator 1 and housing 2, the elastic conjunction of stator 1 is in housing 2.The lateral surface of stator 1 is provided with groove
4, groove 4 is groove texture, and the stator 2 that is designed as of groove 4 has been reserved certain deformation space, reduced in cold climate conditions
The lower risk for causing housing 1 to be split up because of interference fit.But stator 1 is the critical component in electronic, it is needed with good strong
When degree is to bear to be used with rotor engagement, being capable of transmitting large torque.Therefore the design of groove 4 is carried out on the stator 1, and it needs base
Designed in elastic mechanics model, groove 4 can not careless design arrangement on the stator 1.
Meanwhile, the quantity of groove 4 can be multiple, and multiple grooves 4 are arranged on the lateral surface of stator 1 in circumference in equal parts.
Multiple grooves 4, in the design of circumference in equal parts arrangement, are also based on the intensity and moment of torsion of stator 1 and examine on the lateral surface of stator 1
Consider, if for example, two grooves 4 are adjacent excessively near on stator 1, two adjacents of groove 4 easily occur being broken when in use or
Breakage, its reliability is substantially reduced.Equally, based on elastic mechanics model, in having the design of multiple grooves 4, groove 4 it is specific
Size also produces corresponding change.Therefore, based on elastic mechanics model, the design of groove 4 is parallel with the axis of stator 1, i.e., recessed
Groove 4 is in the axial direction of stator 1.
The radial direction vertical view that groove 4 is based on stator 1 is rectangle, as shown in figure 1, the angle from the radial direction of stator 1 goes to see groove
4, groove 4 is rectangle；The axial direction that groove 4 is based on stator 1 is overlooked in fan annular, as shown in Fig. 2 from the angle of the axial direction of stator 1
Go to see groove 4, groove 4 is in fan annular.Groove 4 designs rectangularity in the radial angle of stator 1, and it is to ensure that stator 1 exists
Part residing for groove 4, the torque in the axial direction of stator 1 can keep stabilization, groove 4 is easy to processing in addition.And groove 4
Fan annular is designed in the axial angle of stator 1, it is to ensure that groove 4 can be well matched with stator 1, it is ensured that its torque,
The foundation of elastic mechanics model is also allowed in addition.And fan annular is designed in the axial angle of stator 1 in this groove 4, such as Fig. 2 institutes
Show, it is based at the round dot of stator 1, form central angle θ, can be designed under different torque demands according to elastic mechanics model
Go out central angle θ.
Based on Saint Venant's principle, in the case of more than 3, the depth of groove 4 is between adjacent grooves 4 for the quantity of groove 4
The arc length of stator 1 1/10th, the design can be reduced influence of the groove to mechanical model boundary condition, it is ensured that mechanics
The accuracy that model is calculated.Be filled with heat-conducting glue 3 in the groove 4, heat-conducting glue 3 be advantageous in that consolidated stator and housing it
Between connection and radiating effect, with good shock resistance and absorbing, exactly because and the reasonable design of the upper groove 4 of stator 1,
It is that heat-conducting glue 3 provides receiving space on the basis of the moment of torsion needs of stator 1 are met.Groove 4 two ends can also and stator
1 two ends retain certain distance, i.e. groove 4 and are caved in structure in surrounding on the stator 1, can so facilitate the installation of heat-conducting glue 3
With storage.
When assembling structure of the motor using motor stator casing unit of the present utility model, stator 1 and shell can be improved
The thermal contact resistance of body 2, increases effective contact area, and the connection consolidated between stator 1 and housing 2 reduces shaking for motor
Dynamic and noise, reduces because of the risk that interference fit causes housing 2 to be split up, it is ensured that the stability and security of motor work,
And simple structure, it is easy to accomplish.
The main stator 1 (stator core) by housing 2 and inside housing 2 of stator housing unit is constituted, based on bullet
Property mechanical model, by ginsengs such as magnitude of interference ε, motor torque T, groove number n, stator and the axially contact length of housing for giving
Number, can in the hope of single groove the central angle θ of stator 1 span, so that it is determined that the cylindrical upper circumference in equal parts distribution of stator 1
Groove 4 size.As shown in figure 3, a kind of motor stator casing component that groove design is carried out based on elastic mechanics model
Groove method for designing, the center of circle, the region that is contacted with housing 2 to stator 1 with the extended line of the peripheral boundaries of groove 4 by stator 1
It is analyzed, it is comprised the following steps：
The first step, the setting of calculating parameter sets corresponding calculating parameter, and the change of the radial direction of housing 2 is set up by this step
Shape amount ε1With the relation between footprint pressure P.As shown in Fig. 2 set the unilateral magnitude of interference between stator 1 and the contact surface of housing 2 as
ε, the deflection of the radial direction of housing 2 is ε1, the deflection of the radial direction of stator 1 is ε2, stator 1 is P with the footprint pressure that housing 2 coordinates, recessed
Groove number is n, and the central angle that groove 4 is based on stator is θ.
Second step, calculates the deflection ε of the radial direction of housing 21, this step is to set up the radial-deformation ε of stator 12With footprint pressure
Relation between P.Its computing formula is as follows：
Wherein：E1Elastic modelling quantity, μ for housing 21Poisson's ratio, R for housing 21For the exradius of housing 2, R are stator 1
Exradius, the footprint pressure that P is housing 2 and stator 1.
3rd step, calculates the deflection ε of the radial direction of stator 12, its computing formula is as follows：
Wherein：E2Elastic modelling quantity, μ for stator 12Poisson's ratio, R for stator 12For the inner circle radius of stator 1, R are stator 1
Exradius, the footprint pressure that P is housing 2 and stator 1.
4th step, by housing 2 and the combined calculation of stator 1, by Simultaneous Equations, divide out unknown parameter ε1、ε2, will contact
Pressure P is represented with known design parameter.
The deflection ε of the radial direction of simultaneous housing 21, the radial direction of stator 1 deflection ε2, the unilateral interference that coordinates of stator 1 and housing 2
ε is measured, its computing formula is：
ε=ε1+ε2。
The footprint pressure p of stator 1 and housing 2 is calculated, computing formula is as follows：
Wherein：ε is the unilateral magnitude of interference that stator 1 coordinates with housing 2, exradius, E that R is stator 11It is the bullet of housing 2
Property modulus, μ1Poisson's ratio, R for housing 21It is the exradius of housing 2, E2Elastic modelling quantity, μ for stator 12It is the Poisson of stator 1
Than, R2It is the inner circle radius of stator 1.
5th step, calculates the peak torque T ' that can be transmitted after stator and housing interference fit, is calculated by the 4th step
The footprint pressure P that obtains and known design parameter come set up the peak torque that can be transmitted after stator, housing coordinate with it is unknown
The relation of parameter θ.
Its computing formula is as follows：
T '=(2 π-n θ) uplR2,
Wherein：θ be single groove be woven on circumferential section central angle, u be stator contacted with housing confficient of static friction,
L be the contact length of stator and housing axial direction, n be groove number, R be the exradius of stator 1, P be housing 2 and stator 1
Footprint pressure.
Here, establishing the equation based on the peak torque T ' that can be transmitted after stator and housing interference fit and θ, root
According to the peak torque T being actually needed, then the value of θ can be determined.
6th step, calculates the central angle θ that groove 4 is based on stator 1, according to the peak torque T that design of electrical motor is transmitted, to ensure
Premised on motor normal work, the relation of T ' and T is set up, with reference to the relation of θ in the 5th step and T ', and then obtain the value model of θ
Enclose.I.e. using the peak torque exported under motor normal work for T calculates the central angle θ that groove 4 is based on stator 1.Its is specific
Step is as follows：
(1) peak torque exported under sets requirement motor normal work is T, and peak torque T is according to electric automobile to electricity
The actual requirement of machine is determined.
(2) the maximum torque T ' that can be transmitted after stator coordinates with housing is obtained, and meets T ' >=T.Meet T ' >=T's
Purpose is that the stator 1 after groove design has been carried out, its peak torque T that meet design requirement is required, really according to this
Determine the design of the specific dimensional values of groove.
(3) span of central angle θ is calculated, its computing formula is as follows：
Wherein, T is peak torque, the list that ε is stator 1 and the cooperation of housing 2 of output under design requirement motor normal work
Confficient of static friction, the l that the side magnitude of interference, u are contacted for stator with housing are for stator and the axial contact length of housing, n are individual groove
Number, R are exradius, the E of stator 11Elastic modelling quantity, μ for housing 21Poisson's ratio, R for housing 21For the exradius of housing 2,
E2Elastic modelling quantity, μ for stator 12Poisson's ratio, R for stator 12It is the inner circle radius of stator 1.
As shown in Fig. 2 after calculating central angle θ, the groove 4 arranged by circumference in equal parts designs the specific chi of groove 4
It is very little so that after the surface design groove 4 of stator 1, the need for actual design peak torque T can also be met.
General principle of the present utility model, principal character and advantage of the present utility model has been shown and described above.One's own profession
The technical staff of industry it should be appreciated that the utility model is not restricted to the described embodiments, described in above-described embodiment and specification
Simply principle of the present utility model, the utility model also has respectively on the premise of the utility model spirit and scope are not departed from
Changes and improvements are planted, these changes and improvements are both fallen within the range of claimed the utility model.The utility model requirement
Protection domain defined by appending claims and its equivalent.
Claims (4)
1. a kind of motor stator casing component that groove design is carried out based on elastic mechanics model, including stator（1）And housing
（2）, stator（1）Elastic conjunction is in housing（2）It is interior, it is characterised in that：
The stator（1）Lateral surface be provided with groove（4）, groove（4）With stator（1）Axis it is parallel, groove（4）It is based on
Stator（1）Radial direction overlook be rectangle, groove（4）Based on stator（1）Axial direction overlook in fan annular.
2. a kind of motor stator casing component that groove design is carried out based on elastic mechanics model according to claim 1,
It is characterized in that：The groove（4）Quantity be several, several grooves（4）In stator（1）Lateral surface on be in Equal round
Week arranges.
3. a kind of motor stator casing component that groove design is carried out based on elastic mechanics model according to claim 2,
It is characterized in that：The groove（4）Quantity be more than 3, groove（4）Depth be adjacent grooves（4）Between stator（1）Arc length
1/10th.
4. a kind of motor stator casing component that groove design is carried out based on elastic mechanics model according to claim 2,
It is characterized in that：Described groove（4）Inside it is filled with heat-conducting glue（3）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621135536.5U CN206195481U (en) | 2016-10-18 | 2016-10-18 | Motor stator shells assembly based on theory of elasticity model carries out recess design |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621135536.5U CN206195481U (en) | 2016-10-18 | 2016-10-18 | Motor stator shells assembly based on theory of elasticity model carries out recess design |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206195481U true CN206195481U (en) | 2017-05-24 |
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ID=58731586
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621135536.5U Expired - Fee Related CN206195481U (en) | 2016-10-18 | 2016-10-18 | Motor stator shells assembly based on theory of elasticity model carries out recess design |
Country Status (1)
| Country | Link |
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| CN (1) | CN206195481U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023162059A1 (en) * | 2022-02-24 | 2023-08-31 | 株式会社アイシン | Manufacturing method of rotor for electric rotary machine |
-
2016
- 2016-10-18 CN CN201621135536.5U patent/CN206195481U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023162059A1 (en) * | 2022-02-24 | 2023-08-31 | 株式会社アイシン | Manufacturing method of rotor for electric rotary machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170524 Termination date: 20171018 |
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| CF01 | Termination of patent right due to non-payment of annual fee |