CN213685177U - Differential mechanism for vehicle reduction gearbox - Google Patents
Differential mechanism for vehicle reduction gearbox Download PDFInfo
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- CN213685177U CN213685177U CN202022313756.5U CN202022313756U CN213685177U CN 213685177 U CN213685177 U CN 213685177U CN 202022313756 U CN202022313756 U CN 202022313756U CN 213685177 U CN213685177 U CN 213685177U
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- gear
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Abstract
A differential mechanism for the speed reducer of vehicle is composed of gear, differential case with axle hole and axle hole, a pair of axle gears on axle hole, a pair of planetary gears on axle hole and engaged with axle holes, and a planetary gear set on planetary gear axle and engaged with axle holes. Compared with the prior art, the utility model, it is good, with low costs to have assembly efficiency height, quality and reducing gear box NVH, guarantees the advantage of gear and differential mechanism casing pivoted axiality easily.
Description
Technical Field
The utility model relates to a variable speed technique.
Background
In the new energy automobile electric drive system, a reduction box is arranged, a differential structure is arranged in the reduction box to provide power with two different rotating speeds, the differential structure comprises a differential case linked with a gear, a pair of half-shaft gears and planetary gears arranged in the differential case, the rotating power drives one half-shaft gear to rotate, the other half-shaft gear is driven to rotate by the planetary gears, the differential case rotates by inputting adjusting power, so that the rotating speed of the other half-shaft gear is different from the rotating speed of one half-shaft gear, thereby realizing the purpose of differential, the gear and the differential case in the prior art are separately manufactured, although the installation of the pair of half-shaft gears and the planetary gears is convenient, the gear and the differential case need to be connected and fixed by screws, and when the connection and fixation, the coaxiality needs to be ensured, therefore, the assembly requirement is high, so that the assembly efficiency is low, the quality and the NVH of the reduction gearbox are poor, the cost is high, and the coaxiality of the gear and the rotation of the differential mechanism shell is not easy to guarantee.
Disclosure of Invention
The utility model aims at providing an assembly efficiency is high, quality and reducing gear box NVH are good, with low costs, guarantee the differential mechanism that is used for the vehicle reducing gear box of gear and differential mechanism casing pivoted axiality easily.
The utility model discloses a realize like this: the differential gear comprises a gear, a differential case arranged on the gear, a pair of half axle gears and a pair of planet gears arranged in the differential case, and a planet gear shaft, wherein the two sides of the differential case are provided with planet gear shaft holes, the upper end and the lower end of the rotation axis of the differential case are provided with half axle gear shaft holes, the pair of half axle gears are respectively arranged on the upper half axle gear shaft hole and the lower half axle gear shaft hole, the planet gear shaft is connected on the planet gear shaft holes arranged on the two sides of the differential case in a penetrating manner, the pair of planet gears are respectively arranged on the planet gears and are meshed with the two half axle gears, the rotation axis of the gear is superposed with the rotation axis of the differential case, the differential case is characterized in that the gear and the differential case are integrally manufactured, and the differential.
During assembly, the pair of half axle gears are firstly placed into the differential case through the gear mounting window and are respectively arranged on the half axle gear shaft holes arranged at the upper end and the lower end of the rotating axis of the differential case, then the planet gears are arranged on the planet gear shaft holes arranged at the two sides of the differential case through the gear mounting window, the planet gear shafts penetrate through the planet gear shaft holes, then the planet gears penetrate through the two planet gears, and finally the two ends of the planet gear shafts are fixed, so that the differential is mounted.
The gear and the differential mechanism shell are integrally manufactured, so that a blank can be cast firstly during manufacturing, then each shaft hole is machined, the gear and the axle hole of the half axle gear of the differential mechanism shell (namely the rotation axis of the differential mechanism shell) are machined simultaneously, the coaxiality of the gear and the rotation of the differential mechanism shell is easily ensured, the gear installation window is arranged, the installation of the half axle gear and the planetary gear is ensured, and the invention purpose of the patent application is realized.
Advantageous effects
1. The reduction gearbox is simpler in structure and simpler to assemble, and workers can master the assembly better.
2. The overall weight of the differential and the main reduction gear is reduced, so that the overall weight of the reduction gearbox is reduced.
3. The differential shell and the main reduction gear are cast into a whole, so that the cost is lower.
4. Because the differential shell and the main reduction gear used by the differential are integrated, bolt connection joints after clearance fit in assembly are reduced, and the quality and NVH effect of the whole reduction gearbox are improved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a perspective view of the present invention.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings and examples:
as shown in fig. 1 and 2, the present invention comprises a gear 1, a differential case 2 disposed on the gear 1, a pair of side gears 6 and a pair of planetary gears 7 disposed inside the differential case 2, and planetary gear shafts 8, wherein planetary gear shaft holes 3 are disposed on both sides of the differential case 2, side gear shaft holes 4 are disposed on both upper and lower ends of a rotation axis of the differential case 2, the pair of side gears 6 are respectively disposed on the upper and lower side gear shaft holes 4, the planetary gear shafts 8 are connected to the planetary gear shaft holes 3 disposed on both sides of the differential case 2 in a penetrating manner and fixed at both ends of the planetary gear shafts 8 by shaft elastic collars 9, the pair of planetary gears 7 are respectively disposed on the planetary gear shafts 8 and engaged with the two side gears 6, the rotation axis of the gear 1 coincides with the rotation axis of the differential case 2, and is characterized in that the gear 1 and the differential case 2 are integrally manufactured, gear mounting windows 5 are arranged on the differential case 2 at two sides of the planetary gear shaft hole 3.
Here, the lower part of the differential case 2 is located in the middle of the gear 1, which makes the differential compact and the overall volume reduced for installation in the transmission.
A differential adjuster shim 10 is provided on the inner side wall of the differential case 2. The differential adjusting gasket 10 is arranged to adjust the position relationship between the pair of side gears 6 and the planetary gear 7, so that the pair of side gears 6 and the planetary gear 7 are better meshed, and smooth transmission is ensured.
During assembly, a pair of half axle gears 6 are firstly placed into the differential case 2 through the gear installation window 5 and are respectively arranged on the half axle gear shaft holes 4 arranged at the upper end and the lower end of the rotation axis of the differential case 2, then the planet gears 7 are arranged on the planet gear shaft holes 3 arranged at the two sides of the differential case 2 through the gear installation window 5, the planet gear shafts 8 penetrate into the planet gear shaft holes 3 from the outside, then penetrate through the two planet gears 7, and finally the two ends of the planet gear shafts 8 are fixed through the elastic retaining rings 9 for shafts, so that the differential is installed.
Claims (3)
1. A differential mechanism for the speed reducer of vehicle is composed of gear, differential case on said gear, a pair of semi-axle gears in said case, a pair of planetary gears, and planetary gear axle.
2. A differential for a vehicle reduction gearbox according to claim 1, wherein the lower part of the differential casing is located in the middle of the gear.
3. A differential for a vehicle reduction gearbox according to claim 1 or 2, characterised in that a differential adjuster shim is provided on the inside wall of the differential housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022313756.5U CN213685177U (en) | 2020-10-17 | 2020-10-17 | Differential mechanism for vehicle reduction gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022313756.5U CN213685177U (en) | 2020-10-17 | 2020-10-17 | Differential mechanism for vehicle reduction gearbox |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213685177U true CN213685177U (en) | 2021-07-13 |
Family
ID=76757443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022313756.5U Active CN213685177U (en) | 2020-10-17 | 2020-10-17 | Differential mechanism for vehicle reduction gearbox |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213685177U (en) |
-
2020
- 2020-10-17 CN CN202022313756.5U patent/CN213685177U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |