CN212804168U - Self-sealing differential mechanism structure lubricating system - Google Patents
Self-sealing differential mechanism structure lubricating system Download PDFInfo
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- CN212804168U CN212804168U CN202021083953.6U CN202021083953U CN212804168U CN 212804168 U CN212804168 U CN 212804168U CN 202021083953 U CN202021083953 U CN 202021083953U CN 212804168 U CN212804168 U CN 212804168U
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- gear
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- gasket
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- 238000007789 sealing Methods 0.000 title claims abstract description 19
- 230000001050 lubricating effect Effects 0.000 title claims abstract description 9
- 239000003921 oil Substances 0.000 claims abstract description 52
- 239000010687 lubricating oil Substances 0.000 claims abstract description 13
- 238000005461 lubrication Methods 0.000 claims abstract description 9
- 125000006850 spacer group Chemical group 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 4
- 241000283216 Phocidae Species 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000002679 ablation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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Abstract
The utility model discloses a self-sealing differential mechanism structure lubricating system, a planetary gear gasket is positioned between a planetary gear and a differential mechanism shell, a first oil duct is arranged on the hole wall of a shaft hole, a sinking platform is arranged in the differential mechanism shell, one end of the sinking platform is connected with the hole opening part of the shaft hole, a through hole communicated with the shaft hole is arranged on the sinking platform, and a second oil duct extending along the radial direction of the sinking platform is arranged at the other end of the sinking platform; the half axle gear gasket is provided with a through hole which is a third oil duct; lubricating oil flows to the second oil duct and the third oil duct in sequence through the first oil duct, lubricates the contact surface of the semi-axis gear and the shaft hole, and lubricates the contact surfaces of the counter sink, the half axle gear gasket and the half axle gear, and then the lubricating oil is filled into the differential case to lubricate the contact surfaces of the planetary gear gasket, the planetary gear and the differential case. The utility model has the advantages of make each part in the differential mechanism obtain good lubrication.
Description
Technical Field
The utility model relates to an automobile automatic gearbox field, concretely relates to self sealss differential mechanism structure lubricating system.
Background
The differential is one of the most main parts of the automobile, realizes the torque distribution of each driving wheel of the automobile and the differential speed, and plays an extremely important role in the service life of tires and the safety of the automobile; in the design of automobiles, in order to meet the design requirements of light weight and compact structure, the integrated design of a differential and a gearbox is generally adopted in a front-engine front-drive arranged vehicle; in the design of a conventional differential, the sealing is realized by matching with a transmission shaft of the whole vehicle; in the whole vehicle assembly process, a spline on a transmission shaft is easy to damage an oil seal in the process of penetrating the oil seal, so that oil leakage fault is caused; the self-sealing differential design can effectively solve the problem of damage to the oil seal in the process of assembling the transmission shaft, so that the self-sealing differential design is applied more in recent years.
Compared with the traditional differential mechanism, the self-sealing differential mechanism structure has the advantages that the length and the diameter of the matching shaft neck of the side gear and the differential mechanism shell are obviously increased, so that higher requirements are put on lubrication of the parts at the position and the internal parts of the differential mechanism. Many enterprises in China often have more problems in the development process of the self-sealing differential, and poor lubrication of internal parts of the differential occupies a larger proportion of the self-sealing differential.
Disclosure of Invention
The utility model provides a make each part in the differential mechanism obtain good lubricated self sealss differential mechanism structure lubricating system.
The technical scheme for realizing the purpose is as follows:
a self-sealing differential structure lubricating system comprises a differential shell, a half axle gear gasket, a planetary gear and a planetary gear gasket, wherein the differential shell is provided with a shaft hole, the half axle gear consists of a half axle and a gear, the half axle in the half axle gear is arranged in the shaft hole, the gear in the half axle gear is positioned in the differential shell, a half axle gear gasket is arranged between the differential shell and a gear of the half axle gear, the planet gear is arranged on the differential shell and is meshed with the half axle gear, the planet gear gasket is positioned between the planet gear and the differential shell, a first oil duct is arranged on the hole wall of the shaft hole, a sinking platform is arranged in the differential shell, one end of the sinking platform is connected with the orifice part of the shaft hole, a through hole communicated with the shaft hole is arranged on the sinking platform, and a second oil duct extending along the radial direction of the sinking platform is arranged at the other end of the sinking platform; the half axle gear gasket is provided with a through hole which is a third oil duct;
lubricating oil flows to the second oil duct and the third oil duct in sequence through the first oil duct, lubricates the contact surface of the semi-axis gear and the shaft hole, and lubricates the contact surfaces of the counter sink, the half axle gear gasket and the half axle gear, and then the lubricating oil is filled into the differential case to lubricate the contact surfaces of the planetary gear gasket, the planetary gear and the differential case.
The utility model has the advantages that:
1. compared with the traditional differential mechanism, the self-sealing differential mechanism structure has the advantages that the length and the diameter of the matching shaft neck of the half axle gear and the differential mechanism shell are obviously increased, after the oil ducts are arranged on the shaft hole of the differential mechanism shell and the peripheral surface of the half axle gear, when the half axle gear and the differential mechanism shell rotate relatively, effective lubrication is provided, the ablation fault of the differential mechanism shell caused by poor lubrication is prevented, and the reliability of the self-sealing differential mechanism is improved;
2. the utility model is provided with oil ducts on the differential shell and the gasket, which provides effective lubrication for the end face of the half axle gear; the gasket oilhole distributes and arranges at equidimension not circumference, and when differential mechanism casing and semi-axis relatively rotated, the lubricated terminal surface of effectual increase differential mechanism improves self sealss differential mechanism reliability design.
Drawings
FIG. 1 is an assembly of a differential and a transmission housing;
FIG. 2 is a cross-sectional view of a differential according to the present invention;
FIG. 3 is a schematic view of the right differential case half;
FIG. 4 is a schematic view of a side gear;
FIG. 5 is a schematic view of a side gear shim.
Reference numbers in the drawings:
1 is the oil blanket, 2 is the derailleur casing, 3 is the bearing, 4 is side gear, 4a is the mounting hole, 4b is the spline, 4c is the step, 5 is differential mechanism right side half shell, 6 is the end cap, 7 is the round pin axle, 8 is differential mechanism left side half shell, 9 is the side gear gasket, 10 is the planet gear gasket, 13 is the shaft hole, 14 is the heavy platform, 15 is the through-hole.
A is a first oil passage, B is a second oil passage, and C is a third oil passage.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Including differential casing, side gear 4, side gear gasket 9, planetary gear 12, planetary gear gasket 10, the differential casing comprises differential left half shell 8 and differential right half shell 5, and differential left half shell 8 and differential right half shell 5 fixed connection all are equipped with shaft hole 13 on differential left half shell 8 and the differential right half shell 5. The differential left half-shell 8 and the differential right half-shell 5 are respectively provided with a bearing 3 at one end, and the differential left half-shell 8 and the differential right half-shell 5 are respectively arranged on the transmission housing 2 through the bearings 3.
The hole walls of the shaft holes of the differential left half case 8 and the differential right half case 5 on which the side gears 4 are mounted are provided with a first oil passage a, which preferably extends in a spiral direction on the hole wall surface of the shaft hole 13. Be equipped with heavy platform 14 in differential left half case 8 and the differential right half case 5, the one end of this heavy platform 14 is connected with the drill way position in shaft hole 13, and is equipped with on heavy platform 14 with the through-hole 15 that shaft hole 13 link up, the other end of heavy platform 14 is equipped with along the radial second oil duct B that extends of heavy platform 14.
The side gear 4 is composed of half shafts and gears, the half shafts of the side gear 4 are mounted in the shaft holes 13, and the gears of the side gear 4 are located inside the differential case. A part of the axle shaft of the side gear 4 is exposed to the outside of the differential case, and an oil seal 1 is installed between the part of the axle shaft exposed to the outside of the differential case and the transmission case 2, and the lubricating oil is prevented from overflowing between the side gear 4 and the transmission case 2 by the oil seal 1.
The side gear 4 is provided with a mounting hole 4a along the axial direction of the side gear 4, the hole wall of the mounting hole 4a is provided with a spline 4b, and the power of the side gear 4 can be output through the spline 4b and the spline on other transmission shafts. An end cap 6 is installed in the installation hole 4a, the end cap 6 is used for sealing the installation hole 4a so as to prevent lubricating oil in the differential case from overflowing to the outside of the transmission through the installation hole 4a, and the end cap 6 is close to the axial end of the side gear 4. A step 4c is arranged in the mounting hole 4a, and the plug 6 abuts against the step 4c to limit the position of the plug 6 and avoid damage to the spline 4b caused by excessive feeding of the plug 6.
A fourth oil passage (not shown) is provided on the outer peripheral surface of the axle shaft of the side gear 4, and the fourth oil passage is arranged in a spirally wound manner, and the spiral direction of the fourth oil passage is opposite to the spiral direction of the first oil passage a, for example, the spiral direction of the first oil passage a is a left-handed direction, and the spiral direction of the fourth oil passage is a right-handed direction. And a fifth oil channel is arranged on the axial end face, facing the half axle gear gasket 9, of the gear of the half axle gear 4 and extends along the radial direction of the half axle gear 4.
A half shaft gear gasket 9 is arranged between the left differential half shell 8 and the half shaft gear 4, a half shaft gear gasket 9 is arranged between the right differential half shell 5 and the half shaft gear 4, the half shaft gear gasket 9 is sleeved on a half shaft of the half shaft gear 4, one end of the half shaft gear gasket 9 abuts against a sunken platform 14 in the differential shell, and the other end of the half shaft gear gasket 9 abuts against an axial end face of a gear in the half shaft gear 4.
The side gear spacer 9 is provided with a plurality of through holes, which are third oil passages C. The plurality of through holes forming the third oil passage C are divided into two groups, with the centers of the through holes of one group being distributed on the first circumference and the centers of the through holes of the other group being distributed on the second circumference. The centers of the two sets of through holes are not in the same radial direction of the side gear spacer 9, which helps to allow the lubricating oil to flow to the fifth oil passage through the third oil passage C.
The planet gears 12 are mounted on the differential right-hand case 5, the planet gears 12 mesh with the side gears 4, and the planet gear spacer 10 is located between the planet gears 12 and the differential right-hand case 5. Be equipped with the pilot hole on the planetary gear 12, the pilot hole cooperation on planetary gear 11 and the planetary gear 12, the both ends of planetary gear 11 cooperate respectively in the hole that sets up on differential mechanism right side half shell 5, and wherein, the one end of planetary gear 11 is equipped with round pin axle 7, and round pin axle 7 is connected with differential mechanism right side half shell 5.
Lubricating oil flows to the second oil duct B and the third oil duct C in sequence through the first oil duct A, lubricates the contact surface of the half shaft gear 4 and the shaft hole 13, lubricates the contact surfaces of the sinking platform 14, the half shaft gear gasket 9 and the half shaft gear 4, and then fills the lubricating oil into the differential left half shell 8 and the differential right half shell 5 to lubricate the contact surfaces of the planetary gear gasket 10, the planetary gear 12 and the differential right half shell 5. Lubricating oil flows to the shaft pin 7 through the spherical surface of the planetary gear 12, so that the matching surfaces of the assembly hole of the planetary gear 12 and the planetary gear shaft 11 and the matching surfaces of the shaft pin 7 and the right differential case 5 are lubricated, and finally, the lubricating oil flows out of the transmission case 2 through the hole in the right differential case 5, and the circulation is carried out.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. Self-sealing differential structure lubricating system, including differential housing, side gear (4), side gear gasket (9), planetary gear (12), planetary gear gasket (10), be equipped with shaft hole (13) on the differential housing, side gear (4) comprises half axle and gear, the half axle in side gear (4) is installed in shaft hole (13), gear in side gear (4) is located inside the differential housing, install side gear gasket (9) between the gear of differential housing and side gear (4), planetary gear (12) are installed on the differential housing, planetary gear (12) and side gear (4) meshing, planetary gear gasket (10) are located between planetary gear (12) and the differential housing, its characterized in that, be equipped with first oil duct (A) on the pore wall of shaft hole (13), be equipped with heavy platform (14) in the differential housing, one end of the sinking platform (14) is connected with the orifice part of the shaft hole (13), a through hole (15) communicated with the shaft hole (13) is arranged on the sinking platform (14), and a second oil duct (B) extending along the radial direction of the sinking platform (14) is arranged at the other end of the sinking platform (14); a plurality of through holes are formed in the half axle gear gasket (9), and the through holes are a third oil duct (C);
lubricating oil flows to the second oil duct (B) and the third oil duct (C) in sequence through the first oil duct (A), the contact surfaces of the half shaft gear (4) and the shaft hole (13) are lubricated, and after the contact surfaces of the counter sink (14), the half shaft gear gasket (9) and the half shaft gear (4) are lubricated, the lubricating oil is filled into the differential case, and the contact surfaces of the planetary gear gasket (10), the planetary gear (12) and the differential case are lubricated.
2. The structural lubricating system for a self-sealing differential as claimed in claim 1, characterized in that the first oil passage (a) extends in a spiral direction on a bore wall surface of the shaft bore (13).
3. The structural lubricating system for a self-sealing differential as claimed in claim 1, wherein the plurality of through-holes forming the third oil passage (C) are divided into two groups, wherein the centers of the through-holes of one group are distributed on the first circumference and the centers of the through-holes of the other group are distributed on the second circumference.
4. The structural lubrication system of a self-sealing differential according to any one of claims 1 to 3, wherein a fourth oil passage is provided on the outer peripheral surface of the axle shaft of the side gear (4).
5. The self-sealing differential structural lubrication system according to claim 4, wherein the fourth oil passage is arranged in a spiral wound manner.
6. A structural lubrication system for a self-sealing differential according to any one of claims 1 to 3, characterized in that a fifth oil passage is provided on an axial end face of the gear of the side gear (4) facing the side gear spacer (9), the fifth oil passage extending in a radial direction of the side gear (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021083953.6U CN212804168U (en) | 2020-06-12 | 2020-06-12 | Self-sealing differential mechanism structure lubricating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021083953.6U CN212804168U (en) | 2020-06-12 | 2020-06-12 | Self-sealing differential mechanism structure lubricating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212804168U true CN212804168U (en) | 2021-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021083953.6U Active CN212804168U (en) | 2020-06-12 | 2020-06-12 | Self-sealing differential mechanism structure lubricating system |
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| Country | Link |
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| CN (1) | CN212804168U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458746A (en) * | 2022-02-11 | 2022-05-10 | 智新科技股份有限公司 | Differential, reducer assembly and automobile |
| CN114673780A (en) * | 2022-04-07 | 2022-06-28 | 第一拖拉机股份有限公司 | Differential mechanism's initiative lubricating structure that contains differential lock |
-
2020
- 2020-06-12 CN CN202021083953.6U patent/CN212804168U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458746A (en) * | 2022-02-11 | 2022-05-10 | 智新科技股份有限公司 | Differential, reducer assembly and automobile |
| CN114673780A (en) * | 2022-04-07 | 2022-06-28 | 第一拖拉机股份有限公司 | Differential mechanism's initiative lubricating structure that contains differential lock |
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