CN204669146U - A kind of electric machine main shaft of electric automobile - Google Patents
A kind of electric machine main shaft of electric automobile Download PDFInfo
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- CN204669146U CN204669146U CN201520283836.7U CN201520283836U CN204669146U CN 204669146 U CN204669146 U CN 204669146U CN 201520283836 U CN201520283836 U CN 201520283836U CN 204669146 U CN204669146 U CN 204669146U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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Abstract
The utility model provides a kind of electric machine main shaft of electric automobile, belongs to field of mechanical technique.It solve the problem that the electric machine main shaft difficulty of processing of existing electric automobile is high.The electric machine main shaft of this electric automobile comprises the body in hollow direct rod shape, the end face of body wherein one end has the connecting portion cylindrically protruded, the end face of the body other end has the fixed part protruded in column, and fixed part has external screw thread, connecting portion is socketed with spline housing, spline housing comprises tubular spline part and is connected with spline part one end and socket part cylindrically, the madial wall of socket part is together with the lateral wall tight abutment of connecting portion, the end face of socket part and body end face are affixed and lean on, and this socket part and body are fixed by welding.The electric machine main shaft of this electric automobile has the low advantage of difficulty of processing.
Description
Technical field
The utility model belongs to field of mechanical technique, relates to a kind of electric automobile, particularly a kind of electric machine main shaft of electric automobile.
Background technology
2009, because financial crisis constantly spreads, country promulgated " auto industry adjustment and development planning "; propose new-energy automobile strategy; the production capacity forming new forms of energy car the coming years is 500,000, accounts for 5% of total passenger car total sales volume, and this brings major opportunity to the development of electric automobile.
As new-energy automobile, the basic structure of electric automobile in power and orthodox car have significant difference.The power source of orthodox car is internal combustion engine, and the power source of electric automobile is motor.Thus, electric automobile need design brand-new electric machine main shaft.Electric machine main shaft is one of critical piece of drive system of electric automobile, is the rotor subject of electric automobile traction motor, is the main drive source of whole electric automobile, so main shaft requires high strength, high speed running.
Existing electric machine main shaft is all be shaped by overall processing, and above-mentioned processing mode exists that technology difficulty is higher, manufacturing cost is high, technological datum is difficult to reach unified with original design benchmark, precision is relatively low, in heat treatment process, be out of shape the problem that great Yi causes workpiece to be scrapped.
Summary of the invention
The purpose of this utility model there are the problems referred to above for existing technology, proposes a kind of easy to process and electric machine main shaft of the electric automobile that difficulty of processing is low.
The purpose of this utility model realizes by following technical proposal: a kind of electric machine main shaft of electric automobile, it is characterized in that, comprise the body in hollow direct rod shape, the end face of described body wherein one end has the connecting portion cylindrically protruded, the end face of the described body other end has the fixed part protruded in column, and fixed part has external screw thread, described connecting portion is socketed with spline housing, described spline housing comprises tubular spline part and is connected with spline part one end and socket part cylindrically, the madial wall of described socket part is together with the lateral wall tight abutment of connecting portion, the end face of described socket part and body end face are affixed and lean on, and this socket part and body are fixed by welding.
Add man-hour, first process body and spline housing respectively; Then carrying out cooling processing to body makes the connecting portion on body shrink, and is then inserted in socket part by the connecting portion after reducing; When body surface recovers normal temperature, connecting portion can restore to the original state and together with the tight abutment of socket part; Mode finally by welding makes body and spline housing be fixed together securely.
Main shaft is divided into body and spline housing two sections, and body and spline housing are again separately processing, shapingly relative to integrated spindle axis in prior art forms, and effectively reduces the difficulty of processing of main shaft.Be socketed on connecting portion by socket part, pre-determined bit is carried out to body and spline housing, follow-up welding is comparatively stablized and carries out; Then, by arranging the madial wall of socket part together with the lateral wall tight abutment of connecting portion, body and spline housing being fixed together formation entirety securely, effectively ensureing that follow-up welding is stable and carrying out; Then, be affixed lean on by arranging socket part end face and body end face, increase the contact area of spline housing and body, improve the stability of follow-up welding further.To sum up, be socketed on connecting portion in socket part, the madial wall of socket part is together with the lateral wall tight abutment of connecting portion and under socket part end face and body end face be affixed by this three acting in conjunction, the process stabilization of welding is carried out, effectively improves the convenience of this spindle processing.
In the electric machine main shaft of above-mentioned electric automobile, described socket part sidewall runs through and has location hole one, on described connecting portion sidewall, correspondence is provided with the location hole two be connected with location hole one, be plugged with a cylindrical alignment pin in described location hole one and location hole two, and the madial wall of described location hole one and location hole two all with the sidewall tight abutment of alignment pin.
By arranging alignment pin, improve the fixing and stability that connect between spline housing and body, thus stability when improving the work of this electric machine main shaft.
In the electric machine main shaft of above-mentioned electric automobile, described alignment pin is positioned at location hole one away from the end face of location hole two.
Adopt above-mentioned structure, alignment pin is made to be hidden in location hole one and location hole two completely, effectively reduce the impact of external environment condition on alignment pin, thus further increase the fixing and stability that connect between spline housing and body, improve the stability during work of this electric machine main shaft.
In the electric machine main shaft of above-mentioned electric automobile, described socket part lateral wall has tapered spigot surface one, and spigot surface one extends on the end face of socket part, on the lateral wall of described body, correspondence is provided with tapered spigot surface two, and spigot surface two extends on body end face to direction, socket part.
By arranging spigot surface one and spigot surface two, guide effect being played to welding fluid, making welding fluid flow into assigned address comparatively accurately, effectively improve the stability connected between spline housing and body, improve the stability during work of this electric machine main shaft.
Compared with prior art, the electric machine main shaft of this electric automobile has the following advantages:
1, main shaft is divided into body and spline housing two sections, and body and spline housing are again processing separately, shaping relative to integrated spindle axis in prior art, effectively reduces the difficulty of processing of main shaft.
2, be socketed on connecting portion by socket part, pre-determined bit is carried out to body and spline housing, follow-up welding is comparatively stablized and carries out; Then, by arranging the madial wall of socket part together with the lateral wall tight abutment of connecting portion, body and spline housing being fixed together formation entirety securely, effectively ensureing that follow-up welding is stable and carrying out; Then, be affixed lean on by arranging socket part end face and body end face, increase the contact area of spline housing and body, improve the stability of follow-up welding further.To sum up, be socketed on connecting portion in socket part, the madial wall of socket part is together with the lateral wall tight abutment of connecting portion and under socket part end face and body end face be affixed by this three acting in conjunction, the process stabilization of welding is carried out, effectively improves the convenience of this spindle processing.
3, the outer face of alignment pin is positioned at location hole one, alignment pin is made to be hidden in location hole one and location hole two completely, effectively reduce the impact of external environment condition on alignment pin, thus further increase the fixing and stability that connect between spline housing and body, improve the stability during work of this electric machine main shaft.
Accompanying drawing explanation
Fig. 1 is the structural representation of the electric machine main shaft of this electric automobile.
Fig. 2 is that the A-A of Fig. 1 cuts open structural representation.
Fig. 3 is the detonation configuration schematic diagram of the electric machine main shaft of this electric automobile.
In figure, 1, spline housing; 1a, spline part; 1b, socket part; 1b1, location hole one; 1b2, spigot surface one; 2, body; 2a, connecting portion; 2a1, location hole two; 2b, fixed part; 2c, spigot surface two; 3, alignment pin.
Embodiment
Be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As shown in Figure 1 to Figure 3, the electric machine main shaft of this electric automobile is made up of both spline housing 1 and body 2.Wherein, body 2 is in hollow direct rod shape; Spline housing 1 is in tubular.
Specifically, as shown in Figures 2 and 3, the end face of body 2 wherein one end has the connecting portion 2a cylindrically protruded, and connecting portion 2a and body 2 intracavity inter-connection.Body 2 other end is closed and the end face of this end is had the fixed part 2b protruded in column, and this fixed part 2b has external screw thread.
As shown in Figures 2 and 3, spline housing 1 comprise tubular spline part 1a and be connected with spline part 1a one end and the coaxial and socket part 1b of socket part 1b cylindrically, spline part 1a and socket part 1b between spline part 1a and connecting portion 2a.Socket part 1b is socketed on connecting portion 2a, and now, the end face of socket part 1b reclines mutually with body 2 end face.Further illustrate, the madial wall of socket part 1b is together with the lateral wall tight abutment of connecting portion 2a, and socket part 1b and body 2 are fixed by welding.
As shown in Figures 2 and 3, socket part 1b sidewall runs through and has location hole one 1b1, on connecting portion 2a sidewall, correspondence is provided with location hole two 2a1 be connected with location hole one 1b1.Be plugged with cylindrical alignment pin 3 in location hole two 2a1 and location hole one 1b1 and the madial wall of location hole one 1b1 and location hole two 2a1 all with the sidewall tight abutment of alignment pin 3.By arranging alignment pin 3, improve the fixing and stability that connect between spline housing 1 and body 2, thus stability when improving the work of this electric machine main shaft.In the present embodiment, the quantity of location hole one 1b1 has two and circumferentially uniform, and location hole two 2a1 is all identical with location hole one 1b1 with the quantity of alignment pin 3 and position is all one to one.
Further optimization, the outer face of alignment pin 3 is positioned at location hole one 1b1; Socket part 1b lateral wall has tapered spigot surface one 1b2, and spigot surface one 1b2 extends on the 1b end face of socket part; On the lateral wall of body 2, correspondence is provided with tapered spigot surface two 2c, and spigot surface two 2c extends on body 2 end face to 1b direction, socket part.In the present embodiment, welding fluid is between spigot surface one 1b2 and spigot surface two 2c.
Add man-hour, first process body 2 and spline housing 1 respectively; Then carrying out cooling processing to body 2 makes the connecting portion 2a on body 2 shrink, and is then inserted in the 1b of socket part by the connecting portion 2a after reducing; When body 2 surface recovery normal temperature, connecting portion 2a can restore to the original state and together with the 1b tight abutment of socket part; Then by the mode of welding, body 2 and spline housing 1 are fixed together securely; Finally alignment pin 3 to be inserted in location hole one 1b1 and to make the two ends of alignment pin 3 lay respectively in location hole one 1b1 and location hole two 2a1, to make spline housing 1 and body 2 more stable and firm being fixed together.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Claims (4)
1. the electric machine main shaft of an electric automobile, it is characterized in that, comprise the body (2) in hollow direct rod shape, the end face of described body (2) wherein one end has the connecting portion (2a) cylindrically protruded, the end face of described body (2) other end has the fixed part (2b) protruded in column, and fixed part (2b) has external screw thread, described connecting portion (2a) is socketed with spline housing (1), described spline housing (1) comprises tubular spline part (1a) and is connected with spline part (1a) one end and socket part (1b) cylindrically, the madial wall of described socket part (1b) is together with the lateral wall tight abutment of connecting portion (2a), the end face of described socket part (1b) reclines mutually with body (2) end face, and this socket part (1b) and body (2) are fixed by welding.
2. the electric machine main shaft of electric automobile according to claim 1, it is characterized in that, described socket part (1b) sidewall runs through and has location hole one (1b1), on described connecting portion (2a) sidewall, correspondence is provided with the location hole two (2a1) be connected with location hole one (1b1), be plugged with a cylindrical alignment pin (3) in described location hole one (1b1) and location hole two (2a1), and the madial wall of described location hole one (1b1) and location hole two (2a1) all with the sidewall tight abutment of alignment pin (3).
3. the electric machine main shaft of electric automobile according to claim 2, is characterized in that, the end face away from location hole two (2a1) on described alignment pin (3) is positioned at location hole one (1b1).
4. the electric machine main shaft of the electric automobile according to claim 1 or 2 or 3, it is characterized in that, described socket part (1b) lateral wall has tapered spigot surface one (1b2), and spigot surface one (1b2) extends on socket part (1b) end face, on the lateral wall of described body (2), correspondence is provided with tapered spigot surface two (2c), and spigot surface two (2c) extends on body (2) end face to socket part (1b) direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520283836.7U CN204669146U (en) | 2015-05-05 | 2015-05-05 | A kind of electric machine main shaft of electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520283836.7U CN204669146U (en) | 2015-05-05 | 2015-05-05 | A kind of electric machine main shaft of electric automobile |
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| CN204669146U true CN204669146U (en) | 2015-09-23 |
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| CN201520283836.7U Active CN204669146U (en) | 2015-05-05 | 2015-05-05 | A kind of electric machine main shaft of electric automobile |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106685134A (en) * | 2017-02-22 | 2017-05-17 | 江苏天发动力科技有限公司 | Hybrid excitation motor |
| CN109715963A (en) * | 2016-10-11 | 2019-05-03 | 日立汽车***株式会社 | Drive shaft and its manufacturing method |
-
2015
- 2015-05-05 CN CN201520283836.7U patent/CN204669146U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109715963A (en) * | 2016-10-11 | 2019-05-03 | 日立汽车***株式会社 | Drive shaft and its manufacturing method |
| CN109715963B (en) * | 2016-10-11 | 2021-06-11 | 日立安斯泰莫株式会社 | Drive shaft and method for manufacturing same |
| CN106685134A (en) * | 2017-02-22 | 2017-05-17 | 江苏天发动力科技有限公司 | Hybrid excitation motor |
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