CN206017420U - A kind of electric motor of automobile rotating shaft - Google Patents
A kind of electric motor of automobile rotating shaft Download PDFInfo
- Publication number
- CN206017420U CN206017420U CN201620789053.0U CN201620789053U CN206017420U CN 206017420 U CN206017420 U CN 206017420U CN 201620789053 U CN201620789053 U CN 201620789053U CN 206017420 U CN206017420 U CN 206017420U
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- China
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- sections
- bearing
- section
- main shaft
- hole
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- Expired - Fee Related
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Abstract
The utility model discloses a kind of electric motor of automobile rotating shaft, including shaft shoulder section and main shaft section, adjacent in shaft shoulder section and main shaft section, two bearing sections, respectively bearing A sections and bearing B sections are provided with the outside of shaft shoulder section and main shaft section, and the side of bearing B sections, main shaft section and shaft shoulder section is provided with two long keyway, a short keyway is provided with main shaft section, the end face of bearing A sections offers the input hole not led to of an axial direction, is provided with internal spline in input hole, and the end face of bearing B sections offers the non-through hole of an axial direction.When this utility model is used cooperatively with rotor, uniform force is felt relieved, is coordinated firmly, it is adaptable to the larger occasion of bearing capacity, so as to improve the service life of product.
Description
Technical field
This utility model is related to power transmission technique field, more particularly to a kind of for new-energy automobile infinitely variable speeds output
Machine shaft.
Background technology
Connected using clutch between the electromotor and change speed gear box of traditional conventional vehicles, between usual clutch and change speed gear box
Using spline drived, as conventional vehicles have multi gear rotating ratio by change speed gear box, engine speed need not be very high, typically exists
4500rpm or so, and the presence due to clutch, have certain cushioning effect to spline, therefore can using spline drived structure
Ensure the transmission of power, the wear out failure of spline can not be considered substantially.
At present, the rotating shaft being applied in New energy automobile motor, using interior in design（Outward）Spline tooth, couples by spline
Transmitting torque, the advantage contact area of spline connection are big, uniform force, feel relieved, be applied to the larger occasion of bearing capacity.?
In electric automobile, its power assembly is motor and change speed gear box, and the security performance of motor is extremely important, relation vehicle
Safety, normally travel, and the spline drived structure between motor and change speed gear box is particularly important, wherein spline can
Integeral vehicle life is determined by property；As the rotating ratio of electric automobile only has one grade, it is desirable to which motor rotating speed is higher, typically all big
In 9000rpm, spline easily weares and teares, and causes vehicle drive-train to fail, affects the normally travel of vehicle, and there is certain peace
Full hidden danger.
The Chinese utility model patent of such as Application No. 201420049730.6 discloses a kind of machine shaft structure, this
Utility model discloses a kind of machine shaft structure, and including rotating shaft body, the periphery of rotating shaft body is additionally provided with many axial ribs, axle
It is taper muscle to muscle, and the neutral conductor angle of the outside of axial ribs and rotating shaft body is between 0.2 °～1.5 °；The axial ribs
For uniform four.This utility model can once press-fit and complete, and improve the production efficiency of product, the qualification rate of improving product,
While improving product overall performance.Although this axial ribs are axle degree muscle, with the groove of medial wall of rotor be mutually arranged
In the middle of process, due to for interference fit, there is axial ribs corresponding groove more difficult to get access, so as to cause the difficulty being arranged, not
Can solve the problem that machine shaft is the positioning of rotor.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of electric motor of automobile rotating shaft, and the rotating shaft is coordinated with rotor
During use, uniform force is felt relieved, is coordinated firmly, it is adaptable to the larger occasion of bearing capacity, so as to improve the use of product
Life-span.
For solving above-mentioned technical problem, technical solution adopted in the utility model is：A kind of electric motor of automobile rotating shaft, including
Shaft shoulder section and main shaft section, adjacent in shaft shoulder section and main shaft section, two bearing sections are provided with the outside of shaft shoulder section and main shaft section, respectively
For bearing A sections and bearing B sections, it is characterised in that the side of described bearing B sections, main shaft section and shaft shoulder section is provided with two long keys
Groove, is provided with a short keyway in main shaft section, and the end face of described bearing A sections offers the input hole not led to of an axial direction, defeated
Enter, the end face of described bearing B sections offers the non-through hole of an axial direction.
Said structure is further qualified, the depth of described input hole by bearing A sections end face to main shaft section part,
The depth of non-through hole by bearing B sections end face to main shaft section part, do not connect between input hole and non-through hole.
Said structure is further qualified, described internal spline is located in the middle part of input internal surface of hole, and female splined shaft to
Position is alignd with shaft shoulder section, and the equal diameters of the path of internal spline and input hole, and the length of internal spline is input hole depth
1/3 ~ 1/4.
Said structure is further qualified, two described long keyway and a short keyway are respectively at rotating shaft section
0 degree, 180 degree and 90 degree of positions.
Said structure is further qualified, described bearing A sections and bearing B sections are 0.02 milli with the axiality of main shaft section
Rice；Described input hole and 0.02 millimeter of the axiality of non-through hole and main shaft section.
Said structure is further qualified, the opening of described input hole and non-through hole is provided with chamfering, and described falls
Angle number is 60 degree.
It is using the beneficial effect produced by above-mentioned technical proposal：Engine shaft in this utility model is in main shaft section
Two end faces on process, internal spline is set in one of input hole, another non-through hole is output
End, and moment of torsion transmission is carried out by the way of three keyways, so as to realize that engine shaft is being met under torque output condition
Small form factor requirements, the advantage contact area coupled using internal spline is big, uniform force, feel relieved, suitable for bearing capacity compared with
Big occasion.
Description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the full sectional view of Fig. 1；
Fig. 3 is A direction views in Fig. 1；
Wherein：1st, bearing A sections, 2, shaft shoulder section, 3, main shaft section, 4, long keyway, 5, bearing B sections, 6, input hole, 7, interior flower
Key, 8, non-through hole, 9, short keyway.
Specific embodiment
With reference to the accompanying drawings and detailed description this utility model is described in further detail.
As shown in figure 1 and 2, it is a kind of machine shaft, which includes shaft shoulder section 2 and main shaft section 3, in shaft shoulder section 2 and main shaft
Section 3 is adjacent, is provided with two bearing sections, respectively bearing A sections 1 and bearing B sections 5, bearing B in the outside of shaft shoulder section 2 and main shaft section 3
The side of section 5, main shaft section 3 and shaft shoulder section 2 is provided with two long keyway 4, is provided with a short keyway 9, two long keyway in main shaft section 3
4 and short keyway 9 be respectively at 0 degree of rotating shaft section, 180 degree and 90 degree of positions, as shown in accompanying drawing 3,3 keyways are used for passing
Torque delivery.Machine shaft needs and motor connection, and motor output shaft rotating shaft is connected using internal spline, i.e., in the end face of bearing A sections 1
The input hole 6 not led to of an axial direction is offered, the end face of bearing B sections 5 offers the non-through hole 8 of an axial direction, therein defeated
Entering in hole 6 and internal spline 7 being provided near one section of side of bottom, internal spline 7 coordinates in the external splines of motor output shaft, by flower
Key connecting transmitting torque, the advantage contact area of spline connection are big, uniform force, feel relieveds, larger suitable for bearing capacity
Occasion.Leading portion in input hole 6 is through hole simultaneously, can increase rotating shaft in the contact length of motor output shaft, it is ensured that Liang Zhepei
Close closely, it is to avoid loosen.
Can see in fig 2, the depth of input hole 6 by bearing A sections 1 end face to 3 part of main shaft section, non-through hole 8
Depth by bearing B sections 5 end face to 3 part of main shaft section, the depth of non-through hole 8 is more than input hole 6, input hole 6 and non-through hole 8
Between do not connect, the opening of input hole 6 and non-through hole 8 is provided with chamfering, and the chamfering number of degrees are 60 degree.This open up in rotating shaft end face
Hole, is typically realized using rotary drill, the circular manner clamping of main shaft section 3 in rotating shaft, when input hole is processed, with rotating shaft
Its right end face positioned, when equally processing non-through hole, positioned with the left end face of rotating shaft.After machining, need
Flash removed to be gone, and the Surface Finishing of device to hole.
In order that rotating shaft is coordinated with other line shafts, power is transmitted by spline, while convenient coordinate, it is easy to position,
The position of the internal spline 7 of countershaft is improved, and internal spline 7 is located in the middle part of 6 inner surface of input hole, and 7 axial position of internal spline
Put and align with shaft shoulder section 2, and the equal diameters of the path of internal spline 7 and input hole 6, the length of internal spline 7 is that input hole 6 is deep
The 1/3 ~ 1/4 of degree.
For electric motor of automobile rotating shaft, carburizing steel is made through carbo-nitriding, and its machining accuracy is required, and this is interior
The spline accuracy class of spline teeth is 6 grades, and it is that 0.014, pitch tolerance is 0.042, tooth that profile of tooth tolerance is 0.03, teeth directional tolerance
Portion's dimensional tolerance 0.11, and keyway size tolerance requirements 0.04, symmetry require 0.035.In addition, in bearing A sections 1 and bearing B
Section 5 is 0.02 millimeter with the axiality of main shaft section 3,0.02 millimeter of the axiality of input hole 6 and non-through hole 8 and main shaft section 3, rotating shaft
Inside and outside circle and false ceiling hole concentricity 0.015mm；Because batch machining, need to improve following process efficiency, before heat treatment
Each form and position tolerance, excircle dimension must be worked into higher high accuracy, and also exactly legacy equipment in precision and efficiency is difficult to reach for this
's.
In order to meet reduction transfer accounts manufacturing procedure scene circulation, improve production efficiency, the traditional processing technique of countershaft are entered
Optimization is gone, new technological flow is：Forge blank（Normalizing, quenched）- rough turn-heat treatment（Destressing）- half smart car（Double-end vehicle）-
Draw tooth-keyseat-heat treatment（Carbo-nitriding）- smart car-fine grinding-end inspection-purged and packed-enter sequence.Using above-mentioned processing technique, can
To solve the problems, such as that rotating shaft internal spline draws each benchmark before tooth to be difficult to ensure that：A, drawing tooth datum drift cause teeth portion different from bearing position
The heart；B, holoaxial Concentricity tolerance；C, repeatedly fall clamping processing cause homogeneity of product poor.
Claims (6)
1. a kind of electric motor of automobile rotating shaft, including shaft shoulder section（2）With main shaft section（3）, in shaft shoulder section（2）With main shaft section（3）Adjacent,
Shaft shoulder section（2）With main shaft section（3）Outside be provided with two bearing sections, respectively bearing A sections（1）With bearing B sections（5）, its feature
It is described bearing B sections（5）, main shaft section（3）With shaft shoulder section（2）Side be provided with two long keyway（4）, in main shaft section（3）
It is provided with a short keyway（9）, described bearing A sections（1）End face offer an axial direction do not lead to input hole（6）, input
Hole（6）Internal spline is inside provided with（7）, described bearing B sections（5）End face offer the non-through hole of an axial direction（8）.
2. a kind of electric motor of automobile rotating shaft according to claim 1, it is characterised in that described input hole（6）Depth by axle
Hold A sections（1）End face to main shaft section（3）Part, non-through hole（8）Depth by bearing B sections（5）End face to main shaft section（3）Portion
Point, input hole（6）Non- through hole（8）Between do not connect.
3. a kind of electric motor of automobile rotating shaft according to claim 2, it is characterised in that described internal spline（7）It is located at input hole
（6）In the middle part of inner surface, and internal spline（7）Axial location and shaft shoulder section（2）Alignment, and internal spline（7）Path and input hole
（6）Equal diameters, internal spline（7）Length be input hole（6）The 1/3 ~ 1/4 of depth.
4. a kind of electric motor of automobile rotating shaft according to claim 1, it is characterised in that two described long keyway（4）With one
Short keyway（9）It is respectively at 0 degree of rotating shaft section, 180 degree and 90 degree of positions.
5. a kind of electric motor of automobile rotating shaft according to claim 1, it is characterised in that described bearing A sections（1）With bearing B sections
（5）With main shaft section（3）Axiality be 0.02 millimeter；Described input hole（6）Non- through hole（8）With main shaft section（3）Coaxial
0.02 millimeter of degree.
6. a kind of electric motor of automobile rotating shaft according to claim 3, it is characterised in that described input hole（6）Non- through hole
（8）Opening be provided with chamfering, the described chamfering number of degrees are 60 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620789053.0U CN206017420U (en) | 2016-07-26 | 2016-07-26 | A kind of electric motor of automobile rotating shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620789053.0U CN206017420U (en) | 2016-07-26 | 2016-07-26 | A kind of electric motor of automobile rotating shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206017420U true CN206017420U (en) | 2017-03-15 |
Family
ID=58245271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620789053.0U Expired - Fee Related CN206017420U (en) | 2016-07-26 | 2016-07-26 | A kind of electric motor of automobile rotating shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206017420U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106246705A (en) * | 2016-07-26 | 2016-12-21 | 广州市锐美汽车零部件有限公司 | A kind of electric motor of automobile rotating shaft and processing method thereof |
-
2016
- 2016-07-26 CN CN201620789053.0U patent/CN206017420U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106246705A (en) * | 2016-07-26 | 2016-12-21 | 广州市锐美汽车零部件有限公司 | A kind of electric motor of automobile rotating shaft and processing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170315 Termination date: 20200726 |