CN208010889U - Radial welded type differential assembly - Google Patents
Radial welded type differential assembly Download PDFInfo
- Publication number
- CN208010889U CN208010889U CN201820480786.5U CN201820480786U CN208010889U CN 208010889 U CN208010889 U CN 208010889U CN 201820480786 U CN201820480786 U CN 201820480786U CN 208010889 U CN208010889 U CN 208010889U
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- China
- Prior art keywords
- gear
- shell
- differential assembly
- axle portion
- ladder axle
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Abstract
The present utility model application belongs to field of automobile, specifically disclose a kind of radial welded type differential assembly, including gear and shell, the gear internal is equipped with axis hole, the outside of the shell is equipped with the ladder axle portion with shaft hole matching, the axis hole of gear is nested in the smaller ladder axle portion of shell overall diameter, and one end of gear is equipped with the contact surface to offset with the cascaded surface of ladder axle portion, and the cascaded surface of the contact surface and ladder axle portion is welded and fixed.Compared with prior art, this differential assembly is simple in structure, processing cost is low, precision is higher, total amount is lighter.
Description
Technical field
The utility model belongs to field of automobile, specifically discloses a kind of radial welded type differential assembly.
Background technology
Differential assembly is the critical piece of automobile, includes mainly shell and gear, it is generally the case that the two passes through bolt
It is formed by connecting.Concrete structure is that cricoid flange connector is equipped on shell, and interval is arranged at the peripheral position of flange connector
There are multiple through-holes, each through hole is corresponded on the side of gear and is respectively equipped with a threaded hole, bolt passes through through-hole and screw thread
Hole is threadedly coupled, to which shell and gear to be fixedly attached together.
Growing with society, the gradual slave turn of power source of automobile is changed to electronic, and electric vehicle structure is more
It is compact, to keep differential assembly installation site limited, lead to differential assembly geometries shrink, the knot of existing differential assembly
Structure difficulty of processing increases；Also to ensure that electric automobile during traveling is steady, quality requirement high to the required precision of differential assembly
Gently, existing differential assembly is difficult to meet the use demand of electric vehicle.Existing differential assembly is bolted,
It when production and processing, needs to process through-hole on shell, the thread mill drilling on gear, since its required precision is higher, difficult processing
Degree is higher, and assembly process is complex；And it needs the place of being bolted doing Anti-seeping technology, production cost is also relatively high, production
It is less efficient.Moreover, in car running process, bolt bears larger shearing force, belongs to vulnerable part, and replacement is time-consuming and laborious, and
Replacement cost is high.
Utility model content
The purpose of this utility model is providing a kind of radial welded type differential assembly, to solve existing differential assembly
The problem of difficulty of processing is big, assembly is complicated, low production efficiency.
In order to achieve the above object, the base case of the utility model is：Radial welded type differential assembly, including gear
And shell, the gear internal are equipped with axis hole, the outside of the shell is equipped with the ladder axle portion with shaft hole matching, the axis hole of gear
It is nested in the smaller ladder axle portion of shell overall diameter, one end of gear is equipped with the contact to offset with the cascaded surface of ladder axle portion
The cascaded surface of face, the contact surface and ladder axle portion is welded and fixed.
The advantageous effect of this base case is：In this differential assembly, gear and shell are reduced by being welded and fixed
The processing of drilling, screw thread to shell and gear etc. and the assembly of shell and gear, further avoid because processing and assembling
The precision of differential assembly is influenced, production cost is reduced, improves production efficiency and machining accuracy.Simultaneously as this difference
In fast device assembly, reduce bolt arrangement, can make that the structure of this differential assembly is more compact, gross mass is lighter, and can basis
The structure of electric vehicle needs, and reduces the size of entire differential assembly so that the use scope of this differential assembly is wider.Separately
Outside, for this differential assembly compared with existing differential assembly, structure is relatively simple, easy to produce, and is improved by welding
The bonding strength of shell and gear, to keep this differential assembly more durable.Furthermore this differential assembly is radial welding,
Soldering opening is outwardly, easy to operation；And when in use due to differential assembly, gear and shell are with respect to stress, the diameter of contact surface
It is welded to position, can effectively offset opposite stress, keep differential assembly more durable.
Compared with prior art, this differential assembly is simple in structure, processing cost is low, precision is higher, total amount is lighter.
Preferred embodiment one：As the preferred of basic scheme, the cascaded surface of the contact surface and ladder axle portion passes through filling
After the welding wire of 0.6-1.5mm, then fixed using Laser Deep Penetration Welding.Since two kinds of materials of gear and shell generally use are made,
On the one hand can be by shell and gear preferably by being welded together using Laser Deep Penetration Welding after filler wire, another party
Face can be realized firmly connects gear and shell very much, to avoid differential assembly in use, gear and shell
Opposite effect both make to detach.
Preferred embodiment two：Preferably one it is preferred, the cascaded surface of contact surface and ladder axle portion is using first putting postwelding
The mode of lap welding carries out Laser Deep Penetration Welding and fixes.Directly shell and gear may be made to send out using all contact surfaces of laser welding
Change shape, first puts postwelding lap welding and can avoid shell and gear shifting quadrant texturing, influences its machining accuracy.
Preferred embodiment three：Preferably two it is preferred, the weld penetration at the gear and case weld is 6 ±
0.5mm.It is further ensured that shell and gear are welded to connect more securely.
Description of the drawings
Fig. 1 is the structure sectional view of the utility model radial direction welded type differential assembly embodiment 1；
Fig. 2 is the schematic enlarged-scale view at A in Fig. 1；
Fig. 3 is the structure sectional view of the utility model radial direction welded type differential assembly embodiment 2.
Specific implementation mode
The utility model is described in further detail below by specific implementation mode：
Reference numeral in Figure of description includes：Gear 10, groove 11, shell 20, protrusion 21, weld seam 22.
Embodiment 1
As shown in Figure 1 and Figure 2, radial welded type differential assembly, including gear 10 and shell 20,10 inside setting of gear
Axis hole, the outside of shell 20 are provided with the ladder axle portion with shaft hole matching, and the axis hole of gear 10 is nested in 20 overall diameter of shell
In smaller ladder axle portion, one end of gear 10 is provided with the contact surface to offset with the cascaded surface of ladder axle portion, contact surface and rank
The iron-nickel alloy welding wire of 0.6-1.5mm is filled between the cascaded surface of terraced axle portion, using Laser Deep Penetration Welding fix shell and
Gear.When gear 10 and shell 20 weld, spot welding is first used, the axial branch that uniformly carries out of required weld is welded, is made
It obtains gear 10 and shell 20 is tentatively fixed；Lap welding is recycled to weld the contact surface all with weld needed for shell 20 of gear 10
It connects.22 effective depth of weld of weld seam of gear 10 and 20 weld of shell is 6 ± 0.5mm, is preferably 6mm in the present embodiment.
In this differential assembly, gear 10 and shell 20 by being fixed using Laser Deep Penetration Welding after filler wire, due to
Gear 10 and shell 20 generally use, two kinds of materials are made, and two kinds of different materials are welded by filling iron-nickel alloy welding wire,
Laser Deep Penetration Welding on the one hand can be by shell 20 and gear 10 preferably by being welded together, and on the other hand can be achieved will
The very firm connection of gear 10 and shell 20, to avoid differential assembly in use, gear 10 and shell 20
Opposite effect makes the two detach.Laser Deep Penetration Welding fixes the processing for reducing the drilling to shell 20 and gear 10, screw thread etc.,
And the assembly of shell 20 and gear 10, it further avoids because processing and assembling on the influence of the precision of differential assembly, reduces
Production cost, improves production efficiency and machining accuracy.Simultaneously as in this differential assembly, reduce bolt arrangement, it can
Make that the structure of this differential assembly is more compact, gross mass is lighter, and entire differential can be reduced according to the structure needs of electric vehicle
The size of device assembly so that the use scope of this differential assembly is wider.In addition, this differential assembly and existing differential mechanism are total
At compared to structure is relatively simple, easy to produce, and improves the bonding strength of shell 20 and gear 10 by welding, to make
This differential assembly is more durable.Furthermore this differential assembly is radial welding, and soldering opening is outwardly, easy to operation；And due to difference
Fast device assembly when in use, with respect to stress, welded, can effectively be offset for gear 10 and shell 20 by the radial position of contact surface
Opposite stress, keeps differential assembly more durable.When this differential assembly welds, spot welding is first carried out, on the one hand by 10 He of gear
Shell 20 is tentatively fixed, on the other hand can be in the coupling force for axially reinforcing gear 10 and shell 20 so that this differential mechanism is total
At more stress when follow-up use.
Embodiment 2
Difference lies in as shown in figure 3, it is rectangle to be provided with multiple cross sections on axis hole to the present embodiment with embodiment 1
Groove 11, multiple grooves 11 are uniformly distributed along the circumferential direction of axis hole, are provided with outside the small diameter shaft of ladder axle portion and are matched with groove 11
The protrusion 21 of conjunction, protrusion 21 are an integral structure with shell 20, and the cross section of protrusion 21 is the square for being slightly less than 11 cross section of groove
Shape.The depth of groove 11 and raised 21 height x lengths are 3-8mm, are preferably 5mm in the present embodiment.
In the present embodiment by groove and protrusion setting, more fastened to make gear be connected with shell, the two by
When to opposing force, part opposing force is born by protrusion, its active force is reduced from the axially facing surface of the two, to
Avoid the weld of gear and shell from being damaged because stress is excessive or stress action time is longer, further enhance shell and
The bonding strength of gear.
Above-described is only the embodiments of the present invention, and the common sense such as well known concrete structure and characteristic are herein in scheme
It does not describe excessively.It should be pointed out that for those skilled in the art, in the premise for not departing from the utility model structure
Under, several modifications and improvements can also be made, these should also be considered as the scope of protection of the utility model, these are not all interfered with
The effect and patent practicability that the utility model is implemented.
Claims (4)
1. radial welded type differential assembly, including gear and shell, which is characterized in that the gear internal is equipped with axis hole, institute
The outside of shell is stated equipped with the ladder axle portion with shaft hole matching, the axis hole of gear is nested with the ladder axle portion smaller in shell overall diameter
On, one end of gear is equipped with the contact surface to offset with the cascaded surface of ladder axle portion, the cascaded surface of the contact surface and ladder axle portion
It is welded and fixed.
2. radial direction welded type differential assembly as described in claim 1, which is characterized in that the contact surface and ladder axle portion
After welding wire of the cascaded surface by filling 0.6-1.5mm, then fixed using Laser Deep Penetration Welding.
3. radial direction welded type differential assembly as claimed in claim 2, which is characterized in that the ladder of contact surface and ladder axle portion
Face carries out Laser Deep Penetration Welding by the way of first putting postwelding lap welding and fixes.
4. radial direction welded type differential assembly as claimed in claim 3, which is characterized in that at the gear and case weld
Weld penetration is 6 ± 0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820480786.5U CN208010889U (en) | 2018-03-30 | 2018-03-30 | Radial welded type differential assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820480786.5U CN208010889U (en) | 2018-03-30 | 2018-03-30 | Radial welded type differential assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208010889U true CN208010889U (en) | 2018-10-26 |
Family
ID=63892116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820480786.5U Active CN208010889U (en) | 2018-03-30 | 2018-03-30 | Radial welded type differential assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208010889U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110259910A (en) * | 2019-07-25 | 2019-09-20 | 株洲齿轮有限责任公司 | Differential casing and differential mechanism |
-
2018
- 2018-03-30 CN CN201820480786.5U patent/CN208010889U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110259910A (en) * | 2019-07-25 | 2019-09-20 | 株洲齿轮有限责任公司 | Differential casing and differential mechanism |
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