CN213017349U - Constant velocity universal joint steering transmission shaft assembly - Google Patents
Constant velocity universal joint steering transmission shaft assembly Download PDFInfo
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- CN213017349U CN213017349U CN202020912395.3U CN202020912395U CN213017349U CN 213017349 U CN213017349 U CN 213017349U CN 202020912395 U CN202020912395 U CN 202020912395U CN 213017349 U CN213017349 U CN 213017349U
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Abstract
The utility model relates to a constant velocity cardan joint steering transmission shaft assembly belongs to the technical field of automobile design and manufacturing. The utility model discloses a constant velocity universal joint steering transmission shaft assembly comprises a lower shaft and an upper shaft, the lower shaft comprises a first shaft sleeve, one end of the first shaft sleeve is a solid shaft end, and the outer wall of the other end is provided with an external spline; the upper shaft comprises a second shaft sleeve, one end of the second shaft sleeve is a solid shaft end, and an inner spline is arranged on the inner wall of the other end of the second shaft sleeve; the external spline and the internal spline form spline fit; the solid shaft ends of the lower shaft and the upper shaft are sequentially provided with a star-shaped sleeve, a ball, a retainer, a bell-shaped shell and a dust cover from inside to outside. The utility model discloses a constant velocity cardan joint steering transmission shaft assembly arranges that the angle is more diversified, is convenient for arrange the mounted position of steering gear on the sub vehicle frame, dodges other system parts such as stabilizer bar, exhaust, battery package.
Description
Technical Field
The utility model relates to a technical field of automobile design and manufacturing, more specifically says, the utility model relates to a constant velocity universal joint steering transmission shaft assembly.
Background
As shown in fig. 1-2, in the prior art, a steering transmission shaft generally adopts a cross pin non-constant velocity universal joint structure, in order to ensure that hand force balance in a steering wheel rotation process needs to ensure that included angles between an axis of the steering transmission shaft and an input shaft 1 of a steering engine and an axis 2 of a steering column are equal as much as possible, and in addition, a certain phase angle needs to be set between an upper joint yoke 3 and a lower joint yoke 4 of the steering transmission shaft to compensate steering torque fluctuation caused by a space included angle (offset, non-coplanar included angle due to arrangement reasons) between the input shaft of the steering engine and the steering column. Based on the limiting conditions, the hard point setting freedom of the steering system is too small, and the arrangement space of a peripheral system is influenced; in order to meet the requirements of man-machine and arrangement, the steering torque fluctuation rate is controlled to a certain level and cannot be completely eliminated, so that the steering sensing quality is influenced; the platform is poor along the usability, and the different motorcycle types of platform altogether turn to the man-machine position of tubular column and sub vehicle frame and the relative position of lower carriage also have the change, for satisfying the undulant requirement of steering torque and need with the relative sub vehicle frame translation of the steering gear of sharing or around rack axis rotation certain angle, lead to sub vehicle frame unable general.
Therefore, various ball-cage type universal joint transmission shaft assemblies are developed in the prior art, but the steering angles of the ball-cage type universal joint transmission shaft assemblies are small, the requirement of a large turning angle during steering is difficult to meet, and the friction resistance is large during the operation of the transmission shaft assemblies, so that the stability and the uniformity of power transmission are influenced.
SUMMERY OF THE UTILITY MODEL
For solving the above-mentioned technical problem that exists among the prior art, the utility model aims to provide a constant velocity universal joint steering transmission shaft assembly.
The utility model discloses a constant velocity cardan joint steering transmission shaft assembly, including lower shaft and upper shaft, its characterized in that: the lower shaft comprises a first shaft sleeve, one end of the first shaft sleeve is a solid shaft end, and the outer wall of the other end of the first shaft sleeve is provided with an external spline; the upper shaft comprises a second shaft sleeve, one end of the second shaft sleeve is a solid shaft end, and an inner spline is arranged on the inner wall of the other end of the second shaft sleeve; the external spline and the internal spline form spline fit; wherein:
the solid shaft ends of the lower shaft and the upper shaft are sequentially provided with a star sleeve, a ball, a retainer and a bell housing from inside to outside, the star sleeve comprises a sleeve, the outer wall of the end part of the sleeve is uniformly provided with a plurality of pits, the inside of the sleeve is provided with a central hole along the axial direction, the outside of the sleeve is provided with a plurality of ball tracks extending along the axial direction, and the joint between the adjacent ball tracks is provided with an outer spherical surface extending along the axial direction; the retainer is of an annular structure, the inner surface of the annular structure is provided with an inner spherical surface, the outer surface of the annular structure is provided with an outer spherical surface, and the peripheral wall of the annular structure is provided with a square hole; the outer shell comprises a shell, the rear end of the shell is provided with a solid shaft end, the inner surface of the front end of the shell is provided with an inner spherical surface, a plurality of ball channels are formed on the inner spherical surface, and the outer surface of the front end of the shell is provided with an outer edge surface; the solid shaft end of the shell is inserted into the center hole of the star-shaped sleeve to be in interference fit and riveted at the end part, local extrusion is correspondingly applied to the concave pit of the star-shaped sleeve, a bulge is formed on the solid shaft end, and the bulge is tightly attached to the concave pit; the ball is placed in the square hole of the retainer, the retainer is arranged on the star-shaped sleeve, so that the spherical surface of the ball is matched with the ball channel of the star-shaped sleeve, and the outer bell housing is sleeved on the retainer, so that the spherical surface of the ball is matched with the ball channel of the outer bell housing; the inner spherical surface of the retainer is matched with the outer spherical surface of the star-shaped sleeve, and the outer spherical surface of the retainer is matched with the inner spherical surface of the bell-shaped shell.
And the solid shaft end and the sleeve of the star sleeve are riveted and fixed at the end part.
The dustproof cover comprises a cover shell, wherein one axial end of the cover shell is a small hole end, and the other axial end of the cover shell is a large hole end; the small hole end of the dust cover is attached to the outer wall of the first shaft sleeve and clamped by the clamp, and the large hole end of the dust cover is attached to the outer edge face of the bell-shaped shell and clamped by the clamp.
Wherein, the cover shell is of an axially symmetrical structure.
The inner end of the outer ring is welded and fixed with the outer end of the outer ring, and the inner end of the outer ring is welded and fixed with the outer end of the outer ring.
And a lateral locking hole is formed in the outer wall of the spline sleeve.
The number of the pits formed in the outer wall of the end portion of the sleeve is 3-6.
The number of the square holes on the retainer is consistent with that of the balls.
The number of the square holes in the retainer is 3-6.
Wherein the solid shaft end has a diameter less than the outer diameter of the shaft sleeve.
Compared with the prior art, the utility model discloses a constant velocity universal joint steering transmission shaft assembly has following beneficial effect:
(1) the single rzeppa constant velocity universal joint can allow the driving shaft and the driven shaft to realize constant velocity transmission within a larger angle range;
(2) the constant-speed transmission can improve the steering hand feeling and meet the increasingly improved whole vehicle control sensing quality requirement;
(3) the arrangement angle is more diversified, the installation position of the steering engine on the auxiliary frame is convenient to arrange, and other system components such as a transverse stabilizer bar, an exhaust and a battery pack are avoided.
(4) The connection design of the star-shaped sleeve and the solid shaft end can realize the effect of the static friction force and the riveting structure for transmitting the torque together, improve the transmission stability, reduce the abrasion and obviously prolong the service life.
Drawings
Fig. 1 is a schematic view of a steering transmission shaft in the prior art.
Fig. 2 is an exploded view of the steering transmission shaft of fig. 1.
Fig. 3 is a front view of the constant velocity universal joint steering transmission shaft assembly of the present invention.
Fig. 4 is a schematic sectional view taken along a-a of fig. 3.
Fig. 5 is an exploded view of the constant velocity universal joint steering transmission shaft assembly of the present invention.
Fig. 6 is a front view of the inner race of the steering transmission shaft assembly of the present invention.
Fig. 7 is a schematic cross-sectional view taken along the direction B-B in fig. 6.
Fig. 8 is an enlarged structural view of a circle C and a circle D in fig. 7.
Fig. 9 is a side view of the upper shaft of the steering transmission shaft assembly of the present invention.
Fig. 10 is a sectional view of fig. 9 taken along the direction E-E.
Detailed Description
The following will be described in detail with reference to the specific embodiments of the present invention to help those skilled in the art to understand the technical solution of the present invention more completely, accurately and deeply.
Example 1
The present embodiment provides a constant velocity joint steer drive shaft structure, as shown in fig. 3 to 10, including a lower shaft 100, an upper shaft 200, a dust cover 300, balls 400, an inner race 500, a cage 600, an outer race 700, and a spline housing 800.
The lower shaft 100 comprises a shaft sleeve 140, one end of the shaft sleeve 140 is a solid shaft end 120, and the diameter of the solid shaft end 120 is smaller than the outer diameter of the shaft sleeve 140. The outer wall of the other end of the shaft sleeve 140 of the lower shaft is provided with an external spline 130.
The upper shaft 200 comprises a shaft sleeve 240, one end of the shaft sleeve 240 is a solid shaft end 220, and the diameter of the solid shaft end 220 is smaller than the outer diameter of the shaft sleeve 240. The inner wall of the other end of the shaft sleeve 240 of the upper shaft 200 is provided with an internal spline 230.
The dust cover 300 includes a cover housing having an axially symmetric structure, and the cover housing has a small hole end 310 at one axial end and a large hole end 310 at the other axial end.
The inner race 500 includes a sleeve having a plurality of dimples 510(3 to 6) uniformly formed on an outer wall of an end portion thereof, a central hole 520 axially formed on an inner portion thereof, a plurality of axially extending ball grooves 540 formed on an outer portion thereof, and an axially extending outer spherical surface 530 formed at a junction between the adjacent ball grooves 540.
The retainer 600 is a ring structure, the inner surface of the ring structure has an inner spherical surface 630, the outer surface of the ring structure has an outer spherical surface 650, and the peripheral wall of the ring structure is provided with a square hole 640 for accommodating the ball 400.
The outer shell 700 includes a housing, a solid shaft end 720 is provided at a rear end of the housing, an inner spherical surface 750 is formed on an inner surface of a front end of the housing, a plurality of ball channels 740 are formed on the inner spherical surface 750, and an outer rim surface 710 is formed on an outer surface of the front end of the housing.
The spline housing 800 is formed with a spline housing inner bore 820 therein, and the outer wall of the spline housing 800 is provided with a lateral locking hole 810.
The solid shaft end 120 of the lower shaft 100 is inserted into the central hole 520 of the inner race 500 for interference fit and riveted at the end, local extrusion is correspondingly applied at the concave pit 510 of the inner race 500, a protrusion 110 is formed on the solid shaft end 120 and is tightly attached to the concave pit 510, and the torque action is jointly transmitted through the static friction force of the inner hole and the riveted structure at the end. The balls 400 are placed in the square holes 640 of the retainer 600, and the number of the balls 400 is generally 3-6, which can be selected according to the torque and the diameter of the ball. The cage 600 is disposed on the inner race 500 such that the spherical surface of the ball 400 is fitted with the raceway 540 of the inner race 500, and the outer race 700 is fitted on the cage 600 such that the spherical surface of the ball 400 is fitted with the raceway 740 of the outer race 700. The inner spherical surface 630 of the cage 600 is fitted with the outer spherical surface 530 of the inner race 500, and the outer spherical surface 650 of the cage 600 is fitted with the inner spherical surface 750 of the outer race 700. The solid shaft end 720 of the outer housing 700 is inserted into the splined hub bore 820 and is welded at the outer end. The lateral locking hole 810 of the spline housing 800 is used for connecting with a steering gear input shaft and a tubular column shaft core. The small hole end 320 of the dust cover 300 is attached to the outer wall of the shaft sleeve 140 of the lower shaft 100 and clamped by a clamp, and the large hole end 310 of the dust cover 300 is attached to the outer edge surface 710 of the outer shell 700 and clamped by a clamp, so that waterproof and dustproof effects are achieved.
The solid shaft end of the upper shaft 200 is inserted into the central hole 520 of the inner race 500 to be in interference fit and riveted at the end, local extrusion is correspondingly applied to the pit 510 of the inner race 500, a protrusion 210 is formed on the solid shaft end 220 and is tightly attached to the pit 510, and the torque action is jointly transmitted through the static friction force of the inner hole and the end riveting structure. The balls 400 are placed in the square holes 640 of the retainer 600, and the number of the balls 400 is generally 3-6, which can be selected according to the torque and the diameter of the ball. The cage 600 is disposed on the inner race 500 such that the spherical surface of the ball 400 is fitted with the raceway 540 of the inner race 500, and the outer race 700 is fitted on the cage 600 such that the spherical surface of the ball 400 is fitted with the raceway 740 of the outer race 700. The inner spherical surface 630 of the cage 600 is fitted with the outer spherical surface 530 of the inner race 500, and the outer spherical surface 650 of the cage 600 is fitted with the inner spherical surface 750 of the outer race 700. The solid shaft end 720 of the outer housing 700 is inserted into the splined hub bore 820 and is welded at the outer end. The lateral locking hole 810 of the spline housing 800 is used for connecting with a steering gear input shaft and a tubular column shaft core. The small hole end 320 of the dust cover 300 is attached to the outer wall of the shaft sleeve 140 of the lower shaft 100 and clamped by a clamp, and the large hole end 310 of the dust cover 300 is attached to the outer edge surface 710 of the outer shell 700 and clamped by a clamp, so that waterproof and dustproof effects are achieved.
The external splines 130 of the lower shaft 100 form a spline fit with the internal splines 230 of the upper shaft 200.
The constant velocity universal joint steering transmission shaft assembly can allow the driving shaft and the driven shaft to realize constant velocity transmission within a larger angle range, and the whole vehicle can possibly adopt single universal joint transmission; the constant-speed transmission can improve the steering hand feeling and meet the increasingly improved whole vehicle control sensing quality requirement; the use degree of freedom is higher, and the upper and lower universal joint is arranged the angle and is more diversified, is convenient for arrange the mounted position of steering gear on sub vehicle frame, dodges stabilizer bar, other system parts such as exhaust, battery package.
For those skilled in the art, the specific embodiments are only exemplary descriptions of the present invention, and it is obvious that the present invention is not limited by the above-mentioned manner, and various insubstantial improvements are all within the protection scope of the present invention as long as the technical solution of the present invention is adopted.
Claims (9)
1. The utility model provides a constant velocity cardan joint steering transmission shaft assembly, includes lower axle and upper shaft, its characterized in that: the lower shaft comprises a first shaft sleeve, one end of the first shaft sleeve is a solid shaft end, and the outer wall of the other end of the first shaft sleeve is provided with an external spline; the upper shaft comprises a second shaft sleeve, one end of the second shaft sleeve is a solid shaft end, and an inner spline is arranged on the inner wall of the other end of the second shaft sleeve; the external spline and the internal spline form spline fit; wherein:
the solid shaft ends of the lower shaft and the upper shaft are sequentially provided with a star sleeve, a ball, a retainer and a bell housing from inside to outside, the star sleeve comprises a sleeve, the outer wall of the end part of the sleeve is uniformly provided with a plurality of pits, the inside of the sleeve is provided with a central hole along the axial direction, the outside of the sleeve is provided with a plurality of ball tracks extending along the axial direction, and the joint between the adjacent ball tracks is provided with an outer spherical surface extending along the axial direction; the retainer is of an annular structure, the inner surface of the annular structure is provided with an inner spherical surface, the outer surface of the annular structure is provided with an outer spherical surface, and the peripheral wall of the annular structure is provided with a square hole; the outer shell comprises a shell, the rear end of the shell is provided with a solid shaft end, the inner surface of the front end of the shell is provided with an inner spherical surface, a plurality of ball channels are formed on the inner spherical surface, and the outer surface of the front end of the shell is provided with an outer edge surface; the solid shaft end of the shell is inserted into the center hole of the star-shaped sleeve to be in interference fit and riveted at the end part, local extrusion is correspondingly applied to the concave pit of the star-shaped sleeve, a bulge is formed on the solid shaft end, and the bulge is tightly attached to the concave pit; the ball is placed in the square hole of the retainer, the retainer is arranged on the star-shaped sleeve, so that the spherical surface of the ball is matched with the ball channel of the star-shaped sleeve, and the outer bell housing is sleeved on the retainer, so that the spherical surface of the ball is matched with the ball channel of the outer bell housing; the inner spherical surface of the retainer is matched with the outer spherical surface of the star-shaped sleeve, and the outer spherical surface of the retainer is matched with the inner spherical surface of the bell-shaped shell.
2. The constant velocity joint steer drive shaft assembly of claim 1, wherein: the solid shaft end and the sleeve of the star-shaped sleeve are riveted and fixed at the end part.
3. The constant velocity joint steer drive shaft assembly of claim 1, wherein: the dustproof cover comprises a cover shell, wherein one axial end of the cover shell is a small hole end, and the other axial end of the cover shell is a large hole end; the small hole end of the dust cover is attached to the outer wall of the first shaft sleeve and clamped by the clamp, and the large hole end of the dust cover is attached to the outer edge face of the bell-shaped shell and clamped by the clamp.
4. The constant velocity joint steer drive shaft assembly of claim 3, wherein: the cover shell is of an axially symmetrical structure.
5. The constant velocity joint steer drive shaft assembly of claim 1, wherein: the inner part of the spline housing is provided with a spline housing inner hole, and the solid shaft end of the bell-shaped shell is inserted into the spline housing inner hole and is welded and fixed at the outer end.
6. The constant velocity joint steer drive shaft assembly of claim 5, wherein: and a lateral locking hole is formed in the outer wall of the spline sleeve.
7. The constant velocity joint steer drive shaft assembly of claim 1, wherein: the number of the pits formed in the outer wall of the end portion of the sleeve is 3-6.
8. The constant velocity joint steer drive shaft assembly of claim 1, wherein: the number of the square holes on the retainer is consistent with that of the balls.
9. The constant velocity joint steer drive shaft assembly of claim 8, wherein: the number of the square holes on the retainer is 3-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020912395.3U CN213017349U (en) | 2020-05-27 | 2020-05-27 | Constant velocity universal joint steering transmission shaft assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020912395.3U CN213017349U (en) | 2020-05-27 | 2020-05-27 | Constant velocity universal joint steering transmission shaft assembly |
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| Publication Number | Publication Date |
|---|---|
| CN213017349U true CN213017349U (en) | 2021-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020912395.3U Active CN213017349U (en) | 2020-05-27 | 2020-05-27 | Constant velocity universal joint steering transmission shaft assembly |
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| CN (1) | CN213017349U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115163681A (en) * | 2022-06-22 | 2022-10-11 | 杭州腾励传动科技股份有限公司 | Universal joint assembly structure for steering column, universal joint transmission device and automobile |
-
2020
- 2020-05-27 CN CN202020912395.3U patent/CN213017349U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115163681A (en) * | 2022-06-22 | 2022-10-11 | 杭州腾励传动科技股份有限公司 | Universal joint assembly structure for steering column, universal joint transmission device and automobile |
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