CN212407294U - Three-raceway ball transmission shaft structure - Google Patents
Three-raceway ball transmission shaft structure Download PDFInfo
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- CN212407294U CN212407294U CN202020991872.XU CN202020991872U CN212407294U CN 212407294 U CN212407294 U CN 212407294U CN 202020991872 U CN202020991872 U CN 202020991872U CN 212407294 U CN212407294 U CN 212407294U
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Abstract
The utility model discloses a three-roller ball transmission shaft structure, which comprises a sliding shaft, wherein three roller path grooves are arranged on the sliding shaft, balls are limited in the roller path grooves by a retainer, the retainer is arranged in a sliding sleeve and is fixed on the sliding shaft by a snap spring, sleeve path grooves corresponding to the three roller path grooves are arranged on the inner wall of the sliding sleeve, and the snap spring is fixed at one end of the sliding shaft; three shaft roller grooves on the sliding shaft are uniformly distributed by the axis of the sliding shaft; the number of the balls is 12, and four balls are arranged in each of the three shaft rolling grooves and are all arranged in the retainer. The utility model discloses the ball is fixed by the holder and is kept the straight line to roll at the epaxial axle raceway inslot of sliding of three equipartitions, has realized the relative slip between sliding sleeve, the sliding shaft and has transmitted the torsion moment of torsion, can effectively reduce in relative slip and twist reverse the clearance, increases the slip stability, and the atress is more even, slides smoothly, and the difficult jamming abnormal sound of during operation has better wearability, and life is longer.
Description
Technical Field
The utility model relates to a transmission shaft structure especially relates to a three raceway ball transmission shaft structure.
Background
At present, in an automobile steering column assembly, a plurality of transmission shaft structures still adopt two-raceway transmission shafts, and the structure has the following defects: 1. when the two roller paths are stressed, the stress changes are uneven, and the problems of transmission clamping stagnation abnormal sound and the like are easily caused; 2. the two raceways have poor wear resistance; 3. the torsional gap is not easy to control; 4. the service life is low.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems existing in the prior art, the utility model aims to provide a three-raceway ball transmission shaft structure.
In order to achieve the above purpose, the utility model adopts the following technical means: a three-roller ball transmission shaft structure comprises a sliding shaft, wherein three roller path grooves are formed in the sliding shaft, balls are limited in the roller path grooves by a retainer, the retainer is arranged in a sliding sleeve and is fixed on the sliding shaft by a clamp spring, and sleeve roller path grooves corresponding to the three roller path grooves are formed in the inner wall of the sliding sleeve; three shaft roller way grooves on the sliding shaft are uniformly distributed by the axis of the sliding shaft; the number of the balls is 12, and four balls are arranged in each of the three shaft rolling grooves and are all arranged in the retainer.
Furthermore, the shaft raceway groove is a groove which is formed by two bevel edges and a bottom edge and is symmetrical by the middle point of the bottom edge, the length of an opening edge is greater than that of the bottom edge, the depth of the groove is greater than the diameter of 1/4 balls, the sleeve raceway groove is an arc matched with the excircle of the ball, and the depth of the arc is greater than the diameter of 1/4 balls.
Further, the ball is made of steel.
Furthermore, 12 sleeve roller grooves are continuously and uniformly distributed in the inner circumference of the sliding sleeve, and three of the roller grooves are correspondingly matched with the three shaft roller grooves.
The beneficial effects of the utility model reside in that: the ball is fixed by the holder and keeps the straight line to roll in three epaxial axle raceway grooves of equipartition at the sliding shaft, has realized the relative slip and has transmitted torsion between slip cover, the sliding shaft, can effectively reduce to twist reverse the clearance when relative slip, increases sliding stability, and the atress is more even, and it is smooth to slide, and the during operation is difficult for the card to stagnate the abnormal sound, has better wearability, and life is longer.
Drawings
The following description of the present invention will be made in conjunction with the accompanying drawings and examples.
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic cross-sectional view of the present invention.
In the figure: 1. the sliding shaft 2, the shaft raceway groove 3, the ball 4, the retainer 5, the sliding sleeve 6, the sleeve raceway groove 7 and the clamp spring.
Detailed Description
As shown in fig. 1 and 2, the three-raceway ball transmission shaft structure includes a sliding shaft 1, three shaft raceway grooves 2 are formed in the sliding shaft 1, balls 3 are limited in the shaft raceway grooves 2 by a retainer 4, the retainer 4 is installed in a sliding sleeve 5 and fixed on the sliding shaft 1 by a snap spring 7, and sleeve raceway grooves 6 corresponding to the three shaft raceway grooves 2 are formed in the inner wall of the sliding sleeve 5; three shaft roller way grooves 2 on the sliding shaft 1 are uniformly distributed by the axis of the sliding shaft 1; the number of the balls 3 is 12, and four balls are arranged in each shaft rolling groove 2 in the three shaft rolling grooves 2 and are all arranged in the retainer 4.
As shown in figure 2, as an optimized design, the shaft raceway groove 2 is a groove which is formed by two oblique edges and a bottom edge and is symmetrical by the midpoint of the bottom edge, the length of an opening edge is greater than that of the bottom edge, the depth of the groove is greater than the diameter of 1/4 balls, the sleeve raceway groove 6 is an arc matched with the excircle of the balls, and the depth of the arc is greater than the diameter of 1/4 balls.
The ball 3 is made of steel.
Preferably, 12 sleeve roller grooves 6 are continuously and uniformly distributed in the inner circumference of the sliding sleeve 5, and three of the sleeve roller grooves are correspondingly matched with the three shaft roller grooves 2. The inner wall of the sliding sleeve is continuously provided with 12 sleeve roller grooves, so that the sliding shaft can be optionally matched with 3 corresponding roller grooves, and the requirement on the precision of the sliding sleeve is reduced.
The utility model discloses the ball is fixed by the holder and is kept the straight line to roll at the epaxial axle raceway inslot of sliding of three equipartitions, has realized the relative slip between sliding sleeve, the sliding shaft and has transmitted torsion, can effectively reduce in relative slip and twist reverse the clearance, increases the sliding stability, and the atress is more even, slides smoothly, and the difficult jamming abnormal sound of during operation has better wearability, and life is longer.
The embodiments of the present application are only used for illustrating the technical features disclosed in the present application, and the changes made by those skilled in the art through simple replacement still belong to the protection scope of the present application.
Claims (4)
1. The utility model provides a three raceway ball transmission shaft structures, includes the sliding shaft, its characterized in that: the sliding shaft is provided with three shaft raceway grooves, the balls are limited in the shaft raceway grooves by a retainer, the retainer is arranged in a sliding sleeve and fixed on the sliding shaft by a snap spring, and sleeve raceway grooves corresponding to the three shaft raceway grooves are formed in the inner wall of the sliding sleeve; three shaft roller way grooves on the sliding shaft are uniformly distributed by the axis of the sliding shaft; the number of the balls is 12, and four balls are arranged in each of the three shaft rolling grooves and are all arranged in the retainer.
2. A three-raceway ball-transfer shaft structure according to claim 1, wherein: the shaft raceway groove is a groove which is formed by two bevel edges and a bottom edge and is symmetrical by the midpoint of the bottom edge, the length of an opening edge is greater than that of the bottom edge, the depth of the groove is greater than the diameter of 1/4 balls, the sleeve raceway groove is an arc matched with the excircle of the ball, and the depth of the arc is greater than the diameter of 1/4 balls.
3. A three-raceway ball-transfer shaft structure according to claim 1, wherein: the ball is made of steel.
4. A three-raceway ball-transfer shaft structure according to claim 1, wherein: 12 sleeve roller grooves are continuously and uniformly distributed in the inner circumference of the sliding sleeve, and three of the sleeve roller grooves are correspondingly matched with the three shaft roller grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020991872.XU CN212407294U (en) | 2020-06-03 | 2020-06-03 | Three-raceway ball transmission shaft structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020991872.XU CN212407294U (en) | 2020-06-03 | 2020-06-03 | Three-raceway ball transmission shaft structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212407294U true CN212407294U (en) | 2021-01-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020991872.XU Active CN212407294U (en) | 2020-06-03 | 2020-06-03 | Three-raceway ball transmission shaft structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212407294U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115431125A (en) * | 2022-08-23 | 2022-12-06 | 安徽领琢智能科技有限公司 | Integrated constant-force air-cooled grinding machine for flexibly grinding iron casting and using method thereof |
-
2020
- 2020-06-03 CN CN202020991872.XU patent/CN212407294U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115431125A (en) * | 2022-08-23 | 2022-12-06 | 安徽领琢智能科技有限公司 | Integrated constant-force air-cooled grinding machine for flexibly grinding iron casting and using method thereof |
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