CN208474434U - A kind of speed reducer for electric vehicle - Google Patents
A kind of speed reducer for electric vehicle Download PDFInfo
- Publication number
- CN208474434U CN208474434U CN201820865752.8U CN201820865752U CN208474434U CN 208474434 U CN208474434 U CN 208474434U CN 201820865752 U CN201820865752 U CN 201820865752U CN 208474434 U CN208474434 U CN 208474434U
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- ball bearing
- jackshaft
- axially position
- deep groove
- bearing
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Abstract
The utility model discloses a kind of speed reducer for electric vehicle, belong to speed reducer for electric vehicle technical field.For current speed reducer for electric vehicle reliability, in terms of existing for defect, pass through the reasonable Arrangement and use of deep groove ball bearing, cylinder roller bearing and angular contact ball bearing, the advantages of playing variety classes bearing, overcome shortcoming, the retarder is made to have the characteristics that the high and low vibration of high reliablity, transmission efficiency, low noise, structure are simple and easy for installation.
Description
Technical field
The utility model belongs to speed reducer for electric vehicle technical field.
Background technique
Attention with every country to energy conservation and environmental protection problem, electric vehicle engineering receive significant attention, retarder conduct
The important component of electric drive system for electric vehicles, importance more highlight.
Conventional electric car power drive system includes motor and retarder two parts.Function of the retarder parts with conventional transmissions
Can be identical, be after the power of motor output is carried out reduction of speed torque increase, then power is transferred to by wheel by drive shaft.But due to
Motor characteristic is different from engine, and compared with traditional manual transmission, retarder gear quantity is 1 or 2, this is to single tooth
The fatigue endurance of wheel requires higher；The limit speed at reducer input shaft end turns compared to the 5000-6000 of conventional transmissions, increases
To at least 10000 turns or more, this is higher to the fatigue life of bearing and requirement resistant to high temperature；Electric vehicle replaces passing using motor
The fuel engines of system also has higher requirement to the NVH performance of retarder so comparing conventional transmissions；Due to electric vehicle
Arrangement of Engine-room is difficult, and the axial length of retarder is also required to strictly limit；Furthermore, it is contemplated that the continuation of the journey of environmental protection and electric vehicle, subtracts
The high efficiency of fast device is also essential.But current retarder existing defects in these areas, need to retarder into
Row is further to be improved, and reliability and efficiency are improved
Summary of the invention
To solve the above-mentioned problems, the utility model provides a kind of speed reducer for electric vehicle, specifically includes that front housing 1, rear shell
15, input shaft 2, jackshaft 7 and differential mechanism 8, front housing 1 and rear shell 15 cooperatively form reduction case, parallel in reduction-gear housing body
Place input shaft 2 and jackshaft 7；Input shaft 2 is gear shaft, and the input gear being fixedly mounted on input shaft 2 and jackshaft 7 is nibbled
It closes, the axis tooth and differential mechanism 8 on jackshaft 7 are sequentially connected；
The both ends of input shaft 2 are fixed by the deep groove ball bearing I 3 without sealing structure；I 3 cycle surface of deep groove ball bearing
By 15 axially position of front housing 1 or rear shell, inner ring end face by input shaft 2 shaft shoulder axially position；
7 rear end of jackshaft uses the deep groove ball bearing II 14 without sealing structure, II 14 outer ring two sides of deep groove ball bearing point
Axially position, II 14 inner ring right side of deep groove ball bearing are not carried out by rear shell 15 and the bearing plate II 12 being fixed in rear shell 15
By the shaft shoulder axially position of jackshaft 7, the left side of both II 14 inner rings of jackshaft 7 and deep groove ball bearing uses turret head plug screw
13 lockings.
7 front end of jackshaft using cylinder roller bearing 5 carry out radial support, 5 outer ring two sides of cylinder roller bearing respectively by
Front housing 1 and the bearing plate I 4 being fixed on front housing 1 carry out axially position, and 5 inner ring two sides of cylinder roller bearing are respectively by snap ring
6 and jackshaft 7 shaft shoulder axially position.
8 both ends of differential mechanism use angular contact ball bearing 9 fixed, and 9 cycle surface of angular contact ball bearing is by front housing 1 or rear shell
15 axially positions, 9 inner ring end face of angular contact ball bearing is by shaft shoulder axially position, and the angular contact ball bearing at differential mechanism 8
9 using adjustment 10 axial pretightening of gasket.
The utility model has the beneficial effects that
The utility model input shaft both ends select deep groove ball bearing and by the way of bilateral positioning, allow for electric vehicle
The operating condition of many energy regeneratings is had in actual use, therefore positive drive needs while considering that bilateral positions energy with counter drag
Enough solve the reduction that the same bearing bears reliability brought by bidirectional axial force.Intermediate shaft rear end is double using deep groove ball bearing
Side axially position, front end select cylinder roller bearing to carry out radial support, the reason is that due to caused by the special structure of retarder, in
Between before axis end bearing next to master subtract gear, this can generate very big radial force to the gear engagement of big gear ratio, for common
Ball bearing for, reliability will be greatly reduced, and select cylindrical bearing, not only solve the problems, such as reliability, but also save sky
Between.For differential mechanism both ends, selection uses angular contact ball bearing, and pre-tightens axially applying, and is driven compared to tapered roller bearing
More efficient, noise performs better than；It is again more preferable than the support stiffness of ball bearing simultaneously, be conducive to the main engagement for subtracting gear.
Detailed description of the invention
Fig. 1 show structural schematic diagram described in the utility model.(having the line of disconnection on shell please supplement！)
Specific embodiment
The utility model is further described with reference to the accompanying drawing:
A kind of speed reducer for electric vehicle as shown in Figure 1 specifically includes that front housing 1, rear shell 15, input shaft 2, jackshaft 7 and poor
Fast device 8, front housing 1 and rear shell 15 cooperatively form reduction case, and input shaft 2 and jackshaft 7 are placed in parallel in reduction-gear housing body；
Input shaft 2 is gear shaft, and the input gear being fixedly mounted on input shaft 2 and jackshaft 7 engages, the axis tooth on jackshaft 7 with it is poor
Fast device 8 is sequentially connected；
The both ends of input shaft 2 are fixed by the deep groove ball bearing I 3 without sealing structure；I 3 cycle surface of deep groove ball bearing
By 15 axially position of front housing 1 or rear shell, inner ring end face by input shaft 2 shaft shoulder axially position；
7 rear end of jackshaft uses the deep groove ball bearing II 14 without sealing structure, II 14 outer ring two sides of deep groove ball bearing point
Axially position, II 14 inner ring right side of deep groove ball bearing are not carried out by rear shell 15 and the bearing plate II 12 being fixed in rear shell 15
By the shaft shoulder axially position of jackshaft 7, the left side of both II 14 inner rings of jackshaft 7 and deep groove ball bearing uses turret head plug screw
13 lockings.
7 front end of jackshaft using cylinder roller bearing 5 carry out radial support, 5 outer ring two sides of cylinder roller bearing respectively by
Front housing 1 and the bearing plate I 4 being fixed on front housing 1 carry out axially position, and 5 inner ring two sides of cylinder roller bearing are respectively by snap ring
6 and jackshaft 7 shaft shoulder axially position.
8 both ends of differential mechanism use angular contact ball bearing 9 fixed, and 9 cycle surface of angular contact ball bearing is by front housing 1 or rear shell
15 axially positions, 9 inner ring end face of angular contact ball bearing is by shaft shoulder axially position, and the angular contact ball bearing at differential mechanism 8
9 using adjustment 10 axial pretightening of gasket.
Claims (1)
1. a kind of speed reducer for electric vehicle specifically includes that front housing (1), rear shell (15), input shaft (2), jackshaft (7) and differential mechanism
(8), front housing (1) and rear shell (15) cooperatively form reduction case, and input shaft (2) and jackshaft are placed in parallel in reduction-gear housing body
(7)；Input shaft (2) is gear shaft, and the input gear being fixedly mounted on input shaft (2) and jackshaft (7) engages, jackshaft (7)
On axis tooth and differential mechanism (8) be sequentially connected；It is characterized in that,
The both ends of input shaft (2) are fixed by the deep groove ball bearing I (3) without sealing structure；Deep groove ball bearing I (3) outer ring end
Face by front housing (1) or rear shell (15) axially position, inner ring end face by input shaft (2) shaft shoulder axially position；
Jackshaft (7) rear end uses the deep groove ball bearing II (14) without sealing structure, deep groove ball bearing II (14) outer ring two sides
Axially position, deep groove ball bearing II (14) are carried out by rear shell (15) and the bearing plate II (12) being fixed on rear shell (15) respectively
Shaft shoulder axially position of the inner ring right side by jackshaft (7), the left end of both jackshaft (7) and deep groove ball bearing II (14) inner ring
It is locked using turret head plug screw (13) in face；
Jackshaft (7) front end carries out radial support, cylinder roller bearing (5) outer ring two sides difference using cylinder roller bearing (5)
Axially position, cylinder roller bearing (5) inner ring two sides are carried out by front housing (1) and the bearing plate I (4) being fixed on front housing (1)
Respectively by the shaft shoulder axially position of snap ring (6) and jackshaft (7)；
Differential mechanism (8) both ends use angular contact ball bearing (9) fixed, angular contact ball bearing (9) cycle surface by front housing (1) or
Rear shell (15) axially position, angular contact ball bearing (9) inner ring end face is by shaft shoulder axially position, and the angle at differential mechanism (8)
Contact ball bearing (9) is using adjustment gasket (10) axial pretightening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820865752.8U CN208474434U (en) | 2018-06-06 | 2018-06-06 | A kind of speed reducer for electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820865752.8U CN208474434U (en) | 2018-06-06 | 2018-06-06 | A kind of speed reducer for electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208474434U true CN208474434U (en) | 2019-02-05 |
Family
ID=65216402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820865752.8U Active CN208474434U (en) | 2018-06-06 | 2018-06-06 | A kind of speed reducer for electric vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208474434U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112498077A (en) * | 2020-09-30 | 2021-03-16 | 西门子电动汽车动力总成系统(上海)有限公司 | Electric drive assembly system and vehicle |
-
2018
- 2018-06-06 CN CN201820865752.8U patent/CN208474434U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112498077A (en) * | 2020-09-30 | 2021-03-16 | 西门子电动汽车动力总成系统(上海)有限公司 | Electric drive assembly system and vehicle |
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