CN215720328U - Quick detachable zero clearance constant velocity cardan joint that steering column used - Google Patents
Quick detachable zero clearance constant velocity cardan joint that steering column used Download PDFInfo
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- CN215720328U CN215720328U CN202121794650.XU CN202121794650U CN215720328U CN 215720328 U CN215720328 U CN 215720328U CN 202121794650 U CN202121794650 U CN 202121794650U CN 215720328 U CN215720328 U CN 215720328U
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Abstract
The utility model provides an easy-to-detach gapless constant velocity universal joint for a steering column, which comprises a bell-shaped shell, an ejector rod, a star-shaped sleeve, steel balls, a retainer, a spring, a bolt, an input shaft, a spherical surface and six double-arc tracks uniformly arranged on the inner spherical surface of the bell-shaped shell, six double-arc tracks uniformly arranged on the outer spherical surface of the star-shaped sleeve, wherein the six steel balls are simultaneously clamped into the double-arc tracks of the bell-shaped shell and the star-shaped sleeve, the retainer is sleeved outside the steel balls, one end of the ejector rod is abutted against the inner spherical surface of the bell-shaped shell, the other end of the ejector rod is arranged in the star-shaped sleeve and is abutted against one end of the spring in the star-shaped sleeve, the other end of the spring is abutted against the bolt, and the input shaft is fixedly connected with the star-shaped sleeve into a whole through the bolt. The utility model adds a spring structure in the traditional constant velocity universal joint, and utilizes the spring force to pre-compress, so that all the matched parts of the constant velocity universal joint are always kept in close fit, thereby achieving the purpose of automatically eliminating the clearance.
Description
Technical Field
The utility model belongs to the field of automobiles, and particularly relates to an easily-disassembled gapless constant velocity universal joint for a steering column.
Background
With the wide use of steering columns with large adjustment ranges of commercial vehicles, the installation included angle of a steering column constant-velocity universal joint on the whole vehicle is increased, the traditional cross-axle universal joint on a steering intermediate shaft is as shown in fig. 1, the rotating moments at two ends cannot be equal due to the difference of the angular velocities of the input end and the output end, the problems of large rotating moment fluctuation and poor steering hand feeling can occur inevitably, and in order to avoid the problem, the scheme that the cross-axle universal joint is replaced by the constant-velocity universal joint is adopted at present, and is as shown in fig. 2. However, the conventional constant velocity universal joint is mainly used for a driving shaft, the assembling pretightening force of the universal joint is large, the universal joint cannot be directly used for a steering intermediate shaft which needs to rotate flexibly, the assembling pretightening force of the constant velocity universal joint is small in order to ensure that a steering wheel rotates flexibly and does not have clamping stagnation, and therefore the risk of abnormal sound caused by overlarge gaps exists.
Now, a conventional birfield constant velocity joint is constructed as shown in fig. 3. The input shaft 105 and the inner race 102 are fixed together by a spline and can rotate around a rotation center point after being connected together. The constant velocity universal joint is mainly used for an automobile driving shaft and is used for transmitting power, the influence on the rotating torque of the universal joint and the clearance generated after abrasion is not obvious because the using condition is large torque and continuous unidirectional stress, and if the constant velocity universal joint is used for a steering intermediate shaft, the constant velocity universal joint needs to be ensured to have small rotating torque and cannot have too large angular clearance, so that the manufacturing difficulty is greatly increased.
Disadvantages of the prior art
Referring to fig. 3, the angular clearance of the conventional constant velocity universal joint is ensured by the matching precision between the steel ball 103 and the circular arc track of the outer race 101 and the circular arc track of the inner race 102, and during the use, the matching clearance is increased due to wear fatigue, and when the angle clearance is increased to a certain extent, the steering wheel will generate abnormal sound, customers will complain about, and the product will be claimed without three-package period, which causes loss for enterprises.
And (2) disadvantage: the input shaft 105 and the star-shaped sleeve 102 of the traditional constant velocity universal joint are in spline fit, the elastic check ring is fixed and prevented from falling off, once the check ring is pressed into the check ring groove, the check ring automatically pops open and is fixed in the check ring groove, the check ring cannot be dismounted without damage, the constant velocity universal joint cannot be repaired and reworked in the production and use processes, and the manufacturing cost is too high.
Therefore, the utility model discloses a rotate nimble quick detachable constant velocity universal joint who does not have obvious clearance again and be used for the steering column of car just seem very necessary.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects in the prior art and provides an easy-to-detach gapless constant velocity universal joint for a steering column.
The utility model adopts the following technical scheme:
an easy-to-detach gapless constant velocity universal joint for a steering column comprises a bell-shaped shell, a mandril, a star-shaped sleeve, a steel ball, a retainer, a spring, a bolt, an input shaft and a spherical surface.
Six double-arc tracks are uniformly arranged on the inner spherical surface of the bell-shaped shell, six double-arc tracks are uniformly arranged on the outer spherical surface of the star-shaped sleeve, six steel balls are simultaneously clamped into the double-arc tracks of the bell-shaped shell and the star-shaped sleeve, a retainer is sleeved outside the steel balls, one end of the ejector rod is abutted to the inner spherical surface of the bell-shaped shell, the other end of the ejector rod is installed in the star-shaped sleeve and abutted to one end of a spring in the star-shaped sleeve, the other end of the spring is abutted to a bolt, and the input shaft is fixedly connected with the star-shaped sleeve into a whole through the bolt.
One end part of the mandril is designed into a spherical surface and is in point contact with the spherical surface of the outer shell.
An easy-to-detach gapless constant velocity universal joint for a steering column comprises a bell-shaped shell, a mandril, a star-shaped sleeve, a steel ball, a retainer, a spring, a bolt, an input shaft, a spherical surface, a small steel ball and a spline transition sleeve.
Six double-arc tracks are uniformly arranged on the inner spherical surface of the bell-shaped shell, six double-arc tracks are uniformly arranged on the outer spherical surface of the star-shaped sleeve, six steel balls are simultaneously clamped into the double-arc tracks of the bell-shaped shell and the star-shaped sleeve, a retainer is sleeved outside the steel balls, a small steel ball is embedded in one end part of the ejector rod, the small steel ball is abutted to the inner spherical surface of the bell-shaped shell, the other end of the ejector rod is installed in the spline transition sleeve, the star-shaped sleeve is connected with the input shaft into a whole through the spline transition sleeve, the other end of the ejector rod is abutted to one end of a spring in the spline transition sleeve, the other end of the spring is abutted to a bolt, when the input shaft rotates, the rotating torque is transmitted to the steel balls through the spline transition sleeve and the star-shaped sleeve, and then is transmitted to the bell-shaped shell through the steel balls, and the rotating torque transmitting function is realized.
Has the advantages that:
the utility model effectively solves the problem that the traditional constant velocity universal joint generates abnormal sound when being used in a steering column due to overlarge gap, effectively reduces the manufacturing difficulty, improves the production qualification rate, is easy to disassemble, realizes the maintainability and greatly reduces the manufacturing cost of the constant velocity universal joint.
Drawings
FIG. 1 is a cross universal joint on a steering countershaft of the prior art;
FIG. 2 is a prior art constant velocity joint;
FIG. 3 is a conventional rzeppa constant velocity joint;
fig. 4 is a cross-sectional view i of the constant velocity joint of the present invention without a spring structure;
fig. 5 is a cross-sectional view ii of the constant velocity joint of the present invention without a spring structure;
FIG. 6 is an enlarged view of section I of FIG. 5;
FIG. 7 is a cross-sectional view of the present invention I;
FIG. 8 is a cross-sectional view II of the present invention;
FIG. 9 is an enlarged view of the J portion of FIG. 7;
FIG. 10 is a cross-sectional view III of the present invention;
fig. 11 is a schematic structural diagram of another embodiment of the present invention.
In the figure: 1-bell housing, 2-ejector pin, 3-star sleeve, 4-steel ball, 5-retainer, 6-spring, 7-bolt, 8-input shaft, 9-sphere, 10-star sleeve raceway center, 11-bell housing raceway center, 12-small steel ball, 13-spline transition sleeve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention are described below clearly and completely, and it is obvious that the described embodiments are some, not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
According to the utility model, the spring structure is added in the traditional constant velocity universal joint, and the spring force precompression force is utilized to keep all the matched parts of the constant velocity universal joint to be always in close fit, so that the aim of automatically eliminating the clearance is achieved.
Example 1
As shown in fig. 4 to 10, the easy-to-detach zero-clearance constant velocity universal joint for a steering column of the present invention includes an outer race 1, a stem 2, an inner race 3, a steel ball 4, a cage 5, a spring 6, a bolt 7, an input shaft 8, and a spherical surface 9.
Six double-arc tracks are uniformly arranged on the inner spherical surface 9 of the bell-shaped shell 1, six double-arc tracks are uniformly arranged on the outer spherical surface of the inner race 3, six steel balls 4 are simultaneously clamped into the double-arc tracks of the bell-shaped shell 1 and the inner race 3, a retainer 5 is sleeved outside each steel ball 4, one end of each ejector rod 2 is abutted to the inner spherical surface 9 of the bell-shaped shell 1, the other end of each ejector rod is mounted in the inner race 3 and is abutted to one end of a spring 6 in the inner race 3, the other end of each spring 6 is abutted to a bolt 7, the input shaft 8 is fixedly connected with the inner race 3 into a whole through the bolt 7, when the input shaft 8 rotates, the rotating torque is transmitted to the steel balls 4 through the inner races 3 and then transmitted to the bell-shaped shell 1 through the steel balls 4, and the rotating torque transmitting function is realized.
As shown in fig. 4-6, when there is no spring installed, in order to ensure the constant velocity universal joint member to rotate flexibly, the outer race 1, the cage 5 and the inner race 3 are in spherical small clearance fit, and clearances δ 1 and δ 2 exist between the outer race and the inner race, and when the vehicle runs on a bumpy road, the existence of the clearances can easily cause abnormal noise of the steering column.
When the spring 6 is assembled, as shown in fig. 7-9, with a pre-compression force, this compression force is always applied between the outer race 1 and the inner race 3 via the ram 2 and the bolt 7, so that the inner race 3 and the cage 5 are both in contact with each other at the upper end, thereby eliminating the above-mentioned gaps δ 1 and δ 2.
Because the compression force of the spring 6 is always present, even if the contact spherical surface of the outer race 1, the retainer 5 and the inner race 3 generates a gap increase phenomenon due to the movement abrasion, the gap can be automatically eliminated. When the abrasion clearance among the outer shell 1, the retainer 5 and the star sleeve 3 is increased, the outer shell 1, the retainer 5 and the planet sleeve 3 are matched at a new point to form a fit due to the deformation of the spring 6 in the use process, and the clearance is ensured in the use process.
As shown in fig. 10, the center 11 of the outer race track of the outer race 1 and the center 10 of the inner race track of the inner race 3 are respectively symmetrical with the two sides of the rotation center of the constant velocity universal joint by an eccentric center a, so that a wedge-shaped space is formed between the race track of the outer race 1 and the race track of the inner race 3, the left end space size a is smaller than the right end space size B, the steel ball 4 is fixed by the retainer 5, the inner race 3 is always pressed to the right end under the compression force of the spring 6, and the steel ball 4 can always contact the race tracks of the outer race 1 and the inner race 3 due to the wedge-shaped space, so that a gapless fit is formed.
The end part of the mandril 2 is designed to be a spherical surface and is in point contact with the spherical surface of the outer shell 1, so that the constant velocity universal joint cannot be stuck in the rotating process.
Example 2
As shown in fig. 11, another type of quick-release, play-free constant velocity joint for a steering column includes: the device comprises a bell housing 1, a mandril 2, a star-shaped sleeve 3, a steel ball 4, a retainer 5, a spring 6, a bolt 7, an input shaft 8, a spherical surface 9, a small steel ball 12 and a spline transition sleeve 13.
Six double-arc tracks are uniformly arranged on the inner spherical surface 9 of the bell-shaped shell 1, six double-arc tracks are uniformly arranged on the outer spherical surface of the star-shaped sleeve 3, six steel balls 4 are simultaneously clamped into the double-arc tracks of the bell-shaped shell 1 and the star-shaped sleeve 3, a retainer 5 is sleeved outside the steel balls 4, a small steel ball 12 is embedded in one end part of the ejector rod 2, the small steel ball 12 is abutted against the inner spherical surface 9 of the bell-shaped shell 1, the other end of the small steel ball is installed in the spline transition sleeve 13, the star-shaped sleeve 3 is connected with the input shaft 8 into a whole through the spline transition sleeve 13, the other end of the ejector rod is abutted against one end of a spring 6 in the spline transition sleeve 13, the other end of the spring 6 is abutted against a bolt 7, when the input shaft 8 rotates, the rotation torque is transmitted to the steel balls 4 through the spline transition sleeve 13 and the star-shaped sleeve 3 and then transmitted to the bell-shaped shell 1 through the steel balls 4, and therefore the rotation torque transmission function is realized.
The remaining functions and structures are similar to those of the easy-to-detach zero-clearance constant velocity universal joint for a steering column of embodiment 1.
The disassembly method of the utility model comprises the following steps:
the steel ball 4 can be taken out only by separating the input shaft 8 from the star-shaped sleeve 3 after disassembly and disassembly. The input shaft 8 and the star-shaped sleeve 3 are connected together through the bolt 7, after the bolt 7 is loosened, the input shaft 8 can be detached from the star-shaped sleeve 3 and the spring 6 and the ejector rod 2 can be taken out, the limitation of the rod part excircle of the input shaft 8 is avoided, the star-shaped sleeve 3 and the retainer 5 can perform overtravel swing along the raceway direction, and the steel ball 4 can roll beyond the raceway stroke, so that the steel ball 4 can be conveniently taken out, after all the steel balls 4 are respectively taken out along the overtravel swing of each raceway, the retainer 5 is properly rotated, and the retainer 5 and the star-shaped sleeve 3 can be taken out from the bell-shaped shell 1. Then the star sleeve 3 is rotated to lead the axis of the star sleeve to be vertical to the axis of the retainer 5, and the star sleeve can be taken out from the retainer by properly selecting an angle, thereby decomposing the whole constant velocity universal joint and being convenient for maintenance and rework.
Another method for disassembling the easy-to-disassemble gapless constant velocity universal joint for the steering column comprises the following steps: as shown in fig. 11, during disassembly, after the bolts 7 are loosened, the input shaft 8 and the spline housing 13 can be separated and the spring 6 and the ejector rod 2 can be taken out, the limit of the rod part excircle of the input shaft 8 is eliminated, the star-shaped sleeve 3 and the retainer 5 can be swung in the over-stroke direction of the roller path, and the steel ball 4 can roll beyond the roller path stroke, so that the steel ball 4 can be taken out conveniently, after all the steel balls 4 are respectively taken out in the over-stroke swinging direction of the roller paths, the retainer 5 is rotated appropriately, and the retainer 5, the star-shaped sleeve 3 and the spline housing 13 can be taken out of the bell-shaped shell 1. After being taken out, the spline housing 13 can be pressed out of the inner race 3, and then the inner race 3 is rotated to make the axis of the inner race perpendicular to the axis of the cage 5, and the inner race can be taken out of the cage by selecting an appropriate angle, so that the whole constant velocity universal joint can be disassembled.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (3)
1. An easy-to-detach gapless constant velocity universal joint for a steering column is characterized by comprising a bell-shaped shell, a mandril, a star-shaped sleeve, a steel ball, a retainer, a spring, a bolt, an input shaft and a spherical surface; six double-arc tracks are uniformly arranged on the inner spherical surface of the bell-shaped shell, six double-arc tracks are uniformly arranged on the outer spherical surface of the star-shaped sleeve, six steel balls are simultaneously clamped into the double-arc tracks of the bell-shaped shell and the star-shaped sleeve, a retainer is sleeved outside the steel balls, one end of the ejector rod is abutted to the inner spherical surface of the bell-shaped shell, the other end of the ejector rod is installed in the star-shaped sleeve and abutted to one end of a spring in the star-shaped sleeve, the other end of the spring is abutted to a bolt, and the input shaft is fixedly connected with the star-shaped sleeve into a whole through the bolt.
2. The easy-to-detach play-free constant velocity joint for a steering column according to claim 1, wherein an end portion of the jack is designed as a spherical surface, and is in point contact with a spherical surface of the outer race.
3. The utility model provides an easy detachable zero clearance constant velocity cardan joint that steering column used, a serial communication port, including the bell-shaped shell, the ejector pin, the star cover, the steel ball, the holder, a spring, the bolt, the input shaft, the sphere, little steel ball, spline transition cover, six biarc tracks are evenly arranged to bell-shaped shell inner sphere, six biarc tracks are evenly arranged to star cover outer sphere, six steel balls are blocked simultaneously in the biarc track of bell-shaped shell and star cover, the steel ball overcoat is equipped with the holder, the embedded little steel ball that has in ejector pin one end, little steel ball and the interior sphere butt of bell-shaped shell, the other end is installed in spline transition cover, the star cover is as an organic whole through spline transition cover and input shaft, the ejector pin other end and the interior spring one end butt of spline transition cover, the other end butt bolt of spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121794650.XU CN215720328U (en) | 2021-08-03 | 2021-08-03 | Quick detachable zero clearance constant velocity cardan joint that steering column used |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121794650.XU CN215720328U (en) | 2021-08-03 | 2021-08-03 | Quick detachable zero clearance constant velocity cardan joint that steering column used |
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| Publication Number | Publication Date |
|---|---|
| CN215720328U true CN215720328U (en) | 2022-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121794650.XU Active CN215720328U (en) | 2021-08-03 | 2021-08-03 | Quick detachable zero clearance constant velocity cardan joint that steering column used |
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| CN (1) | CN215720328U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115523240A (en) * | 2022-06-21 | 2022-12-27 | 燕山大学 | Rzeppa constant velocity joint having a large working angle of 60 degrees |
| CN117052805A (en) * | 2023-10-11 | 2023-11-14 | 万向钱潮股份公司 | Ball cage universal joint and vehicle |
-
2021
- 2021-08-03 CN CN202121794650.XU patent/CN215720328U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115523240A (en) * | 2022-06-21 | 2022-12-27 | 燕山大学 | Rzeppa constant velocity joint having a large working angle of 60 degrees |
| CN117052805A (en) * | 2023-10-11 | 2023-11-14 | 万向钱潮股份公司 | Ball cage universal joint and vehicle |
| CN117052805B (en) * | 2023-10-11 | 2024-01-26 | 万向钱潮股份公司 | Ball cage universal joint and vehicle |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 621000 yulongyuan village, Yongxing Town, high tech Zone, Mianyang City, Sichuan Province Patentee after: SICHUAN MIANYANG DEXIN MACHINERY Co.,Ltd. Address before: 621000 yulongyuan village, Yongxing Town, high tech Zone, Chengdu, Sichuan Patentee before: SICHUAN MIANYANG DEXIN MACHINERY Co.,Ltd. |
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| CP02 | Change in the address of a patent holder |