CN217301331U - Automobile transmission shaft universal joint - Google Patents
Automobile transmission shaft universal joint Download PDFInfo
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- CN217301331U CN217301331U CN202220961253.5U CN202220961253U CN217301331U CN 217301331 U CN217301331 U CN 217301331U CN 202220961253 U CN202220961253 U CN 202220961253U CN 217301331 U CN217301331 U CN 217301331U
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- universal joint
- oil
- shaft
- outer ring
- driveshaft
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Abstract
The utility model provides an automobile transmission shaft universal joint, which comprises two universal joint forks, wherein the two universal joint forks are connected through a cross shaft, the cross shaft comprises a central body and four connecting shafts arranged on the circumference of the central body, a bearing outer ring is sleeved outside the connecting shafts, a central oil storage cavity is arranged on the central body, four first oil ducts are connected on the central oil storage cavity, and a second oil duct connected with the first oil ducts is arranged on each connecting shaft; a plurality of ball grooves are formed in the outer ring surface of the connecting shaft, balls are connected in the ball grooves, and the balls are located between the bearing outer ring and the connecting shaft; a connecting oil duct is arranged between the ball groove and the second oil duct. The utility model discloses when using, can effectively reduce the universal joint and go up the wearing and tearing between connecting axle and the bearing inner race, improve the life of universal joint.
Description
Technical Field
The utility model relates to a universal joint technical field, in particular to automobile transmission shaft universal joint.
Background
The universal joint is widely applied to automobiles, and the universal joint is used as a key connecting part in an automobile transmission system, is used for connecting transmission shafts and plays a role in transmitting power and torque.
The existing automobile transmission shaft universal joint comprises two universal joint forks and a cross shaft, wherein each universal joint fork comprises a connecting shaft sleeve and a transmission shaft fork arranged at the end part of the connecting shaft sleeve, each transmission shaft fork is provided with two corresponding connecting holes, the cross shaft comprises a central body, four connecting shafts are arranged on the central body, bearing outer rings are rotatably connected onto the connecting shafts, and the connecting shafts are connected into the connecting holes in the transmission shaft forks.
Because the universal joint can rotate relatively between the connecting axle on the cross axle and the bearing outer ring in the use process, the connecting axle on the cross axle and the bearing outer ring are seriously abraded, and the service life of the universal joint is shortened.
Disclosure of Invention
The utility model aims at solving current automobile transmission shaft universal joint in the use, can rotate relatively between the last connecting axle of cross and the bearing inner race, lead to wearing and tearing seriously between the last connecting axle of cross and the bearing inner race, reduced the life's of universal joint problem, provide an automobile transmission shaft universal joint, can effectively solve above-mentioned problem.
The utility model aims at realizing through the following technical scheme: a kind of car transmission shaft universal joint, including two universal joint forks, link to each other through the cross between two universal joint forks, the cross includes the central body and four connecting axles set up on the circumference of the central body, the connecting axle overcoat has bearing outer races, there are central oil storage cavities on the central body, connect with four first oil ducts on the central oil storage cavity, there is the second oil duct linking with first oil duct on each connecting axle; a plurality of ball grooves are formed in the outer ring surface of the connecting shaft, balls are connected in the ball grooves, and the balls are located between the bearing outer ring and the connecting shaft; a connecting oil duct is arranged between the ball groove and the second oil duct.
Preferably, the two ends of the connecting shaft are provided with retaining rings for limiting the outer ring of the bearing.
Preferably, the ball groove is hemispherical.
Preferably, the connecting oil passage is perpendicular to the second oil passage.
Preferably, the universal joint fork comprises a connecting shaft sleeve and a transmission shaft fork with test paper on the connecting shaft sleeve, two corresponding connecting holes are formed in the transmission shaft fork, and a shaft hole is formed in the connecting shaft sleeve.
Preferably, the inner wall of the shaft hole is provided with an inner spline groove.
Preferably, a step surface is arranged at the opening of the central oil storage cavity, a gland is connected to the opening of the central oil storage cavity and abuts against the step surface, and the gland is connected with the central body through a connecting screw.
Preferably, a seal ring is fitted to a side of the press cover facing the step surface.
The utility model has the advantages that: when the utility model is used, the lubricating oil stored in the central oil storage cavity can enter the ball groove through the first oil duct, the second oil duct and the connecting oil duct, and a layer of lubricating oil can be attached to the surface of the ball along with the rolling of the ball in the ball groove, so that the friction force of the ball rolling in the ball groove can be reduced, and the abrasion between the ball and the inner wall of the ball groove is reduced; on the other hand, as the surface of the ball is adhered with a layer of lubricating oil, the friction force between the ball and the inner wall of the bearing outer ring can be reduced, and the abrasion between the ball and the bearing outer ring is reduced; therefore, the abrasion between the connecting shaft and the bearing outer ring on the universal joint is effectively reduced, and the service life of the universal joint is prolonged.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the yoke.
FIG. 3 is a schematic diagram of a cross.
FIG. 4 is a partial cross-sectional view of the cross.
In the figure: 1. universal joint fork, 2, cross axle, 3, connecting shaft sleeve, 4, transmission shaft fork, 5, shaft hole, 6, central body, 7, central oil storage chamber, 8, first oil duct, 9, connecting shaft, 10, bearing outer race, 11, retaining ring, 12, second oil duct, 13, connecting oil duct, 14, ball, 15, gland, 16, connecting screw, 17, sealing washer.
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 those skilled in the art all belong to the protection scope of the present invention.
It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the terms are used in the description to indicate that the referenced device or element must have the specified orientation, be constructed and operated in the specified orientation, and not for the purposes of limitation.
It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.
As shown in fig. 1 to 4, an automotive transmission shaft universal joint includes two universal joint yokes 1, the two universal joint yokes 1 are connected by a cross 2, and the cross 2 includes a central body 6 and four connecting shafts 9 arranged on the periphery of the central body 6. The universal joint fork 1 comprises a shaft connecting sleeve 3, a transmission shaft fork 4 is arranged at one end of the shaft connecting sleeve 3, a shaft hole 5 used for being connected with a transmission shaft is formed in the shaft connecting sleeve 3, and an internal spline groove is formed in the inner wall of the shaft hole 5. Two corresponding connecting holes are arranged on the transmission shaft fork 4. The connecting shaft 9 on the cross shaft 2 is rotatably connected in the connecting hole on the transmission shaft fork 4.
Specifically, a bearing outer ring 10 is sleeved outside the connecting shaft 9, and the bearing outer ring 10 is cylindrical. And two ends of the connecting shaft are provided with check rings 11 for limiting the bearing outer ring 10. The bearing outer ring 10 is positioned between the two retainer rings 11, and the bearing outer ring 10 is axially limited. A central oil reservoir chamber 7 is provided in the central body 6, wherein the central oil reservoir chamber 7 serves for storing lubricating oil. In this embodiment, the central reservoir chamber 7 is a cylindrical chamber and is disposed in the middle of the central body 6. The central oil storage cavity 7 is connected with four first oil ducts 8, the four first oil ducts 8 are distributed on the outer side of the central oil storage cavity 7, and each connecting shaft 9 is provided with a second oil duct 12 connected with the first oil duct 5. The outer ring surface of the connecting shaft 9 is provided with a plurality of ball grooves, the ball grooves are connected with balls 14, the balls 14 can roll in the ball grooves, and the balls 14 are positioned between the bearing outer ring 10 and the connecting shaft 9. A connecting oil duct 13 is arranged between the ball groove and the second oil duct 12, one end of the connecting oil duct 13 is communicated with the ball groove, and the other end of the connecting oil duct is communicated with the second oil duct 12. In the scheme, the connecting oil duct 13 is perpendicular to the second oil duct 12, and the ball groove is hemispherical. The connecting shaft 9 is connected with the center body 6 by welding.
The opening of the central oil storage cavity 7 is provided with a step surface, the opening of the central oil storage cavity 7 is connected with a gland 15, the gland 15 is abutted against the step surface, and the gland 15 is connected with the central body 6 through a connecting screw 16.
In order to improve the sealing performance of the gland 15, a gasket 17 is fitted to the gland 15 on the side facing the step surface. The sealing ring 17 is located between the gland 15 and the step surface, and plays a role in sealing, and prevents lubricating oil in the central oil storage cavity 7 from leaking out of a connecting gap of the gland 15. Preferably, the sealing ring 17 is made of nitrile rubber.
When the utility model is used, the lubricating oil stored in the central oil storage cavity can enter the ball groove through the first oil duct, the second oil duct and the connecting oil duct, and a layer of lubricating oil can be attached to the surface of the ball along with the rolling of the ball in the ball groove, so that the friction force of the ball rolling in the ball groove can be reduced, and the abrasion between the ball and the inner wall of the ball groove is reduced; on the other hand, as the surface of the ball is adhered with a layer of lubricating oil, the friction force between the ball and the inner wall of the bearing outer ring can be reduced, and the abrasion between the ball and the bearing outer ring is reduced; therefore, the abrasion between the connecting shaft and the bearing outer ring on the universal joint is effectively reduced, and the service life of the universal joint is prolonged.
The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by the teaching of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as the present invention, fall within the protection scope of the present invention.
Claims (8)
1. The universal joint is characterized in that a bearing outer ring is sleeved outside the connecting shaft, a central oil storage cavity is arranged on the central body, four first oil ducts are connected to the central oil storage cavity, and a second oil duct connected with the first oil ducts is arranged on each connecting shaft; a plurality of ball grooves are formed in the outer ring surface of the connecting shaft, balls are connected in the ball grooves, and the balls are located between the bearing outer ring and the connecting shaft; and a connecting oil duct is arranged between the ball groove and the second oil duct.
2. The universal joint of the automobile transmission shaft as claimed in claim 1, wherein the two ends of the connecting shaft are provided with retaining rings for limiting the outer ring of the bearing.
3. The automotive driveshaft joint of claim 1, wherein the ball grooves are hemispherical.
4. The automotive driveshaft joint according to claim 1, wherein the connecting oil passage is perpendicular to the second oil passage.
5. The automotive driveshaft universal joint according to any one of claims 1 to 4, wherein the universal joint yoke comprises a driveshaft sleeve and a driveshaft yoke for placing the test paper on the driveshaft sleeve, the driveshaft yoke is provided with two corresponding connection holes, and the driveshaft sleeve is provided with a shaft hole.
6. The automotive driveshaft joint according to claim 5, wherein the inner wall of the shaft hole is provided with an internally splined groove.
7. The universal joint as claimed in any one of claims 1 to 4, wherein a step surface is provided at the opening of the central oil storage chamber, a pressing cover is connected to the opening of the central oil storage chamber, the pressing cover abuts against the step surface, and the pressing cover is connected to the central body by a connecting screw.
8. The automotive transmission shaft universal joint as claimed in claim 7, wherein a sealing ring is embedded on one side of the gland facing the step surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220961253.5U CN217301331U (en) | 2022-04-21 | 2022-04-21 | Automobile transmission shaft universal joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220961253.5U CN217301331U (en) | 2022-04-21 | 2022-04-21 | Automobile transmission shaft universal joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217301331U true CN217301331U (en) | 2022-08-26 |
Family
ID=82914632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220961253.5U Active CN217301331U (en) | 2022-04-21 | 2022-04-21 | Automobile transmission shaft universal joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217301331U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117537005A (en) * | 2024-01-09 | 2024-02-09 | 大同市巴什卡机械制造有限公司 | Coupling with protective sleeve structure |
-
2022
- 2022-04-21 CN CN202220961253.5U patent/CN217301331U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117537005A (en) * | 2024-01-09 | 2024-02-09 | 大同市巴什卡机械制造有限公司 | Coupling with protective sleeve structure |
| CN117537005B (en) * | 2024-01-09 | 2024-04-02 | 大同市巴什卡机械制造有限公司 | Coupling with protective sleeve structure |
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