CN207661067U - Transmission mechanism in electric vehicle main gearbox assembly - Google Patents
Transmission mechanism in electric vehicle main gearbox assembly Download PDFInfo
- Publication number
- CN207661067U CN207661067U CN201721796867.8U CN201721796867U CN207661067U CN 207661067 U CN207661067 U CN 207661067U CN 201721796867 U CN201721796867 U CN 201721796867U CN 207661067 U CN207661067 U CN 207661067U
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- gear
- level driving
- driving gear
- spline
- electric vehicle
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Abstract
The utility model is related to rear drive axle of electric motor assemblies, and in particular to the transmission mechanism in a kind of electric vehicle main gearbox assembly, the technical problem to be solved by the utility model is to provide the transmission mechanisms in a kind of electric vehicle main gearbox assembly that bonding strength is high；First order driven gear including reduction case, in reduction-gear housing body and second level driving gear, the first order driven gear is intermeshed with second level driving gear, the second level driving gear is connected with secondary gear wheel shaft by spline, and the centering washer for the assembly sizing of second level driving gear is provided at the second level driving gear；It is connected by spline, under conditions of not changing overall structure, increase substantially torque-transfer capability, reduce failure-frequency after sale, and centering washer makes spline only undertake torque transmission effect, avoids the low deficiency of spline centering precision for gear assembly sizing, structural strength is high, stable connection.
Description
Technical field
The utility model is related to rear drive axle of electric motor assemblies, and in particular to the biography in a kind of electric vehicle main gearbox assembly
Motivation structure.
Background technology
Currently, being slowed down using twin-stage helical gear in motor rear axle main reducing gear, is produced for guarantee, is easy to assembly, first
Grade driven gear and second level driving gear are mostly separated structure, and currently used torque transfer mode is based on flat key transmits,
But flat key intensity is relatively low, and using heat expansion complex process, damage frequency after sale is high, is not suitable for current production status.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of electric vehicle main gearbox assemblies that bonding strength is high
In transmission mechanism.
Technical solution adopted by the utility model to solve its technical problems is：Transmission in electric vehicle main gearbox assembly
Mechanism, including reduction case, the first order driven gear in reduction-gear housing body and second level driving gear, described
Level-one driven gear is intermeshed with second level driving gear, and the second level driving gear is connected with secondary gear by spline
Axis, and the centering washer shaped for the assembly of second level driving gear is provided at the second level driving gear.
Further, the centering washer diameter is adapted with second level driving gear diameter.
Compared with prior art, the utility model has the beneficial effects that：Electronic car owner provided by the utility model is slowed down
Transmission mechanism in device assembly, is connected by spline, under conditions of not changing overall structure, increases substantially torque transmission
Ability reduces failure-frequency after sale, and so that spline is only undertaken torque and is transmitted for gear assembly sizing by centering washer and make
With avoiding the low deficiency of spline centering precision, structural strength is high, stable connection.
Description of the drawings
Fig. 1 is the utility model assembling schematic diagram；
Reference numeral shown in Fig. 1 is expressed as:The second level 1- driving gear, 2- splines, 3- secondary gear wheel shafts, 4- centering
Washer.
Specific implementation mode
With reference to the accompanying drawings and examples to the further details of explanation of the utility model.
As shown in Figure 1, the transmission mechanism in electric vehicle main gearbox assembly, including reduction case, it is mounted on retarder
First order driven gear in babinet and second level driving gear, the first order driven gear and second level driving gear are mutual
Engagement, the second level driving gear 1 are connected with secondary gear wheel shaft 3 by spline 2, and at the second level driving gear 1
It is provided with the centering washer 4 for the assembly sizing of second level driving gear；The reduction case is to support and fix shafting portion
Part, ensure driving parts normally engage, the basic part of good lubrication and sealing, with enough strength and stiffness；Described
First order driven gear and second level driving gear, first order driven gear and second level driving tooth are provided in reduction-gear housing body
Wheel intermeshing, under the induced effect of second level driving gear, first order driven gear rotates therewith；In order to improve gear shaft
The structural strength being connect with gear improves torque-transfer capability, and in the utility model, the second level driving gear passes through spline
2 are connected with secondary gear wheel shaft 3, are connected by spline 2, under conditions of not changing overall structure, increase substantially torque transmission
Ability reduces failure-frequency after sale, and is equipped with centering washer 4 at the second driving gear rigging position, is used for gear dress
With sizing, to make spline 2 only undertake torque transmission effect, the deficiency for avoiding 2 centering precision of spline low, structural strength is high,
Stable connection.
In order to reinforce the stability of gear assembly, in the utility model, 4 diameter of the centering washer and the second driving gear
Diameter is adapted；The compactness connected when gear assembly can be improved, improve the stability of connection, reinforce gear assembly sizing effect
Fruit.
It is above specific embodiment of the present invention, from implementation process as can be seen that electricity provided by the utility model
Transmission mechanism in motor-car main gearbox assembly, is connected by spline, under conditions of not changing overall structure, is significantly carried
High torque transmission capacity reduces failure-frequency after sale, and so that spline is only undertaken torsion for gear assembly sizing by centering washer
Square transmission acts on, and avoids the low deficiency of spline centering precision, structural strength is high, stable connection.
Claims (2)
1. the transmission mechanism in electric vehicle main gearbox assembly, including reduction case, first in reduction-gear housing body
Grade driven gear and second level driving gear, the first order driven gear are intermeshed with second level driving gear, feature
It is, the second level driving gear (1) is connected with secondary gear wheel shaft (3) by spline (2), and in the second level driving tooth
The centering washer (4) for second level driving gear (1) assembly sizing is provided at wheel (1).
2. the transmission mechanism in electric vehicle main gearbox assembly as described in claim 1, which is characterized in that the centering washer
(4) diameter is adapted with second level driving gear (1) diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721796867.8U CN207661067U (en) | 2017-12-20 | 2017-12-20 | Transmission mechanism in electric vehicle main gearbox assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721796867.8U CN207661067U (en) | 2017-12-20 | 2017-12-20 | Transmission mechanism in electric vehicle main gearbox assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207661067U true CN207661067U (en) | 2018-07-27 |
Family
ID=62942705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721796867.8U Active CN207661067U (en) | 2017-12-20 | 2017-12-20 | Transmission mechanism in electric vehicle main gearbox assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207661067U (en) |
-
2017
- 2017-12-20 CN CN201721796867.8U patent/CN207661067U/en active Active
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Legal Events
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| GR01 | Patent grant | ||
| GR01 | Patent grant |