CN214578714U - Support connection structure and vehicle of motor shaft and reduction gear axle - Google Patents
Support connection structure and vehicle of motor shaft and reduction gear axle Download PDFInfo
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- CN214578714U CN214578714U CN202120644961.1U CN202120644961U CN214578714U CN 214578714 U CN214578714 U CN 214578714U CN 202120644961 U CN202120644961 U CN 202120644961U CN 214578714 U CN214578714 U CN 214578714U
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- motor shaft
- reduction gear
- gear axle
- connection structure
- shaft
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Abstract
The utility model discloses a support connection structure and vehicle of motor shaft and reduction gear axle, including reduction gear axle and the motor shaft of being connected with reduction gear axle spline fit, the left and right both ends of reduction gear axle are nested respectively has first support bearing and second support bearing, the motor shaft left end is equipped with and corresponds the complex external spline with the internal spline of reduction gear axle right part, and the motor shaft right-hand member is nested has third support bearing, be equipped with radial positioning element in the inboard clearance in the outside with the motor shaft left part of reduction gear axle right part. The axial size of the electric drive assembly can be shortened, and the integration level is improved.
Description
Technical Field
The utility model relates to a new energy automobile's electric drive assembly, concretely relates to support connection structure and vehicle of motor shaft and reduction gear axle.
Background
With the gradual rise of pure electric new energy automobiles, various large host factories strive to reduce the design cost of parts while improving the quality of key parts of the new energy automobiles, so the design concept of integration and miniaturization is particularly critical.
The connection mode of a motor shaft and a speed reducer shaft in the existing electric drive assembly is mainly two. One is as follows: referring to fig. 1, the motor comprises a first existing motor shaft 7 and a first existing reducer shaft 8 which are connected together through a spline, a first existing support bearing 71 and a second existing support bearing 72 are respectively nested at the left end and the right end of the first existing motor shaft 7, and a third existing support bearing 81 and a fourth existing support bearing 82 are respectively nested at the left end and the right end of the first reducer shaft 8. Four supporting bearings are adopted to support the existing motor shaft I7 and the existing speed reducer shaft I8, so that the axial size is lengthened, and the cost is higher.
Secondly, referring to fig. 2, the motor comprises a second existing motor shaft 9 and a second existing reducer shaft 10 which are connected together through a spline, a fifth existing support bearing 91 and a sixth existing support bearing 92 are respectively nested in the left and right parts of the second existing motor shaft 9, and the left end of the second existing motor shaft 92 is pressed through a lock nut 101, so that the second existing reducer shaft 10 is prevented from being separated from the second existing motor shaft 9. Because the second existing speed reducer shaft 10 is arranged on the second existing motor shaft 9 to form a cantilever beam state, the cantilever beam can generate deflection deformation in the power transmission process, the transmission precision and the transmission error are influenced, and the power assembly generates vibration and noise, so that the NVH performance of the new energy automobile power assembly is reduced, and the driving comfort is influenced.
Disclosure of Invention
The utility model aims at providing a support connection structure and vehicle of motor shaft and reduction gear axle, its axial dimensions that can shorten the electric drive assembly improves the integrated level.
Support connection structure of motor shaft and reduction gear axle, including reduction gear axle and the motor shaft of being connected with reduction gear axle spline fit, the left and right both ends of reduction gear axle are nested respectively and have first support bearing and second support bearing, the motor shaft left end is equipped with and corresponds the complex external spline with the internal spline of reduction gear axle right part, the motor shaft right-hand member nestification has third support bearing, be equipped with radial setting element in the clearance in the inboard and the motor shaft left part outside of reduction gear axle right-hand member.
Further, the radial positioning piece is a needle bearing or a bushing.
Further, the radial positioning piece is a needle bearing, an accommodating groove correspondingly matched with the outer surface of the needle bearing is annularly formed in the inner side wall of the right end of the speed reducer shaft, and a step portion correspondingly matched with the inner surface of the needle bearing is annularly formed in the outer side wall of the left portion of the motor shaft.
A vehicle comprises an electric drive assembly, wherein the electric drive assembly comprises the support connection structure of the motor shaft and the speed reducer shaft.
Compared with the prior art, the utility model following beneficial effect has.
1. Reduction gear axle and motor shaft pass through splined connection together, support through the third support bearing of the first support bearing at both ends about the reduction gear axle, second support bearing and motor shaft right-hand member three bearing altogether, have reduced a bearing, have reduced manufacturing cost, have shortened axial dimensions, and the integrated level is high. Meanwhile, the radial positioning piece is arranged in the gap between the right end of the speed reducer shaft and the left part of the motor shaft, so that the radial play of the speed reducer shaft is effectively prevented, and the transmission stability is improved.
2. The utility model discloses a bearing is as radial setting element, and bearing radial dimension is little, and rigidity is big, and the wearability is good, has guaranteed that the motor shaft is connected with the good transmission of reduction gear axle.
3. The utility model discloses a limiting plate on first support bearing right side corresponds the cooperation with the epaxial spacing arch of reduction gear, has effectively prevented the reduction gear axle along the axial float, avoids damaging radial setting element and motor shaft.
Drawings
FIG. 1 is a schematic view of a prior art electric drive assembly showing a connection structure between a motor shaft and a reducer shaft;
FIG. 2 is a second schematic view of a connection structure between a motor shaft and a reducer shaft of a conventional electric drive assembly;
fig. 3 is a schematic structural diagram of the present invention.
In the figure, 1-reducer shaft, 11-internal spline, 12-containing groove, 2-motor shaft, 21-external spline, 22-step part, 3-first support bearing, 31-limiting plate, 4-second support bearing, 5-third support bearing, 6-radial positioning piece, 7-existing motor shaft one, 71-existing support bearing one, 72-existing support bearing two, 8-existing motor shaft two, 81-existing support bearing three, 82-existing support bearing four, 9-existing motor shaft three, 91-existing support bearing five, 92-existing support bearing six, 10-existing motor shaft four, 101-lock nut.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 3, shown support connection structure of motor shaft and reduction gear axle, including reduction gear axle 1 and motor shaft 2 with reduction gear axle 1 spline fit connection, the left and right both ends of reduction gear axle 1 are nested respectively has first support bearing 3 and second support bearing 4, 2 left ends of motor shaft are equipped with and correspond complex external splines 21 with the internal spline 11 of 1 right part of reduction gear axle, and 2 right-hand members of motor shaft are nested has third support bearing 5, be equipped with radial setting element 6 in the clearance in the inboard and the 2 left parts outsides of motor shaft of 1 right-hand members of reduction gear axle.
The reducer shaft 1 and the motor shaft 2 transmit power through the internal spline 11 and the external spline 21, and when the motor shaft 2 rotates, the rotating torque of the motor shaft 2 is transmitted to the internal spline 11 on the reducer shaft 1 through the external spline 21, so that torque transmission is realized. The first support bearing 3, the second support bearing 4 and the third support bearing 5 of the 2 right-hand members of motor shaft through reduction gear shaft 1 left and right sides both ends support totally three bearing, compare in current four bearing support structure, have reduced a bearing, have reduced manufacturing cost, have shortened axial dimensions, and the integrated level is high. Meanwhile, the radial positioning piece 6 is arranged in the gap between the right end of the speed reducer shaft 1 and the left part of the motor shaft 2, so that the radial movement of the speed reducer shaft 1 is effectively prevented, and the transmission stability is improved.
The radial positioning piece 6 is a needle bearing, the inner side wall of the right end of the speed reducer shaft 1 is provided with an accommodating groove 12 in a surrounding mode, the accommodating groove is correspondingly matched with the outer surface of the needle bearing, and the outer side wall of the left portion of the motor shaft 2 is provided with a step portion 22 in a surrounding mode, and the step portion is correspondingly matched with the inner surface of the needle bearing. The needle bearing has small radial size, large rigidity and good wear resistance, and ensures the good transmission connection of the motor shaft 2 and the reducer shaft 1.
First support bearing 3 is spacing through being fixed in limiting plate 31 on the automobile body, has effectively prevented reduction gear shaft 1 along axial float, avoids haring radial setting element 6 and motor shaft 2.
A vehicle comprises an electric drive assembly, wherein the electric drive assembly comprises the support connection structure of the motor shaft and the speed reducer shaft.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (4)
1. The utility model provides a support connection structure of motor shaft and reduction gear axle, includes reduction gear axle (1) and motor shaft (2) be connected with reduction gear axle (1) spline fit, its characterized in that: the left and right ends of reduction gear axle (1) are nested respectively and have first support bearing (3) and second support bearing (4), motor shaft (2) left end is equipped with and corresponds complex external splines (21) with internal spline (11) of reduction gear axle (1) right part, and motor shaft (2) right-hand member is nested and has third support bearing (5), be equipped with radial setting element (6) in the clearance in reduction gear axle (1) right-hand member inboard and motor shaft (2) left part outside.
2. The support connection structure of the motor shaft and the reducer shaft according to claim 1, characterized in that: the radial positioning piece (6) is a needle bearing or a bush.
3. The support connection structure of the motor shaft and the reducer shaft according to claim 1, characterized in that: the radial positioning piece (6) is a needle bearing, an accommodating groove (12) correspondingly matched with the outer surface of the needle bearing is annularly arranged on the inner side wall of the right end of the speed reducer shaft (1), and a step part (22) correspondingly matched with the inner surface of the needle bearing is annularly arranged on the outer side wall of the left part of the motor shaft (2).
4. A vehicle comprising an electric drive assembly, characterized in that: the electric drive assembly comprises a support connection structure of the motor shaft and the reducer shaft, which is defined in any one of claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120644961.1U CN214578714U (en) | 2021-03-30 | 2021-03-30 | Support connection structure and vehicle of motor shaft and reduction gear axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120644961.1U CN214578714U (en) | 2021-03-30 | 2021-03-30 | Support connection structure and vehicle of motor shaft and reduction gear axle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214578714U true CN214578714U (en) | 2021-11-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120644961.1U Active CN214578714U (en) | 2021-03-30 | 2021-03-30 | Support connection structure and vehicle of motor shaft and reduction gear axle |
Country Status (1)
| Country | Link |
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| CN (1) | CN214578714U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115163788A (en) * | 2022-06-22 | 2022-10-11 | 一汽奔腾轿车有限公司 | Highly-integrated three-bearing electric drive drum-shaped positioning structure |
-
2021
- 2021-03-30 CN CN202120644961.1U patent/CN214578714U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115163788A (en) * | 2022-06-22 | 2022-10-11 | 一汽奔腾轿车有限公司 | Highly-integrated three-bearing electric drive drum-shaped positioning structure |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 401133 room 208, 2 house, 39 Yonghe Road, Yu Zui Town, Jiangbei District, Chongqing Patentee after: Deep Blue Automotive Technology Co.,Ltd. Address before: 401133 room 208, 2 house, 39 Yonghe Road, Yu Zui Town, Jiangbei District, Chongqing Patentee before: CHONGQING CHANGAN NEW ENERGY AUTOMOBILE TECHNOLOGY Co.,Ltd. |