CN209990805U

CN209990805U - Three ball round pins, transmission shaft assembly and vehicle

Info

Publication number: CN209990805U
Application number: CN201920111006.4U
Authority: CN
Inventors: 方大平; 黄伦路; 钟利伟
Original assignee: Jiangsu Agile Electric Automobile Co Ltd
Current assignee: Jiangsu Agile Electric Automobile Co Ltd
Priority date: 2019-01-23
Filing date: 2019-01-23
Publication date: 2020-01-24
Anticipated expiration: 2029-01-23

Abstract

The utility model provides a three-ball pin, transmission shaft assembly and a vehicle, relating to the technical field of automobiles, and having simple structure and convenient use; the three-ball pin comprises a three-pin frame, an axial through hole, a pin shaft and a ball ring assembly, wherein the ball ring assembly comprises a roller pin, a ball shaft, a limiting structure and a ball ring; the ball shaft is sleeved on the outer wall of the pin shaft, and the roller pin is arranged between the pin shaft and the ball shaft; the limiting structure comprises a clamp and a check ring, the clamp and the check ring are arranged in a clamping groove formed in the pin shaft, the check ring is positioned on the side, close to the roller pins, of the clamp, and the limiting structure is used for limiting the movement of the roller pins and the ball shafts in the axial direction of the pin shaft to the direction far away from the tripod; the outer wall surface of the ball shaft is an arc surface, the ball ring is sleeved on the outer wall of the ball shaft and has freedom degree of rotation in any direction on the outer wall of the ball shaft; therefore, when the transmission shaft and the axial through hole are installed, the spatial arrangement angle of the ball ring assembly in the cylindrical shell is obviously increased, and then larger torque is transmitted, a large swing angle is realized, and the transmission efficiency is improved.

Description

Three ball round pins, transmission shaft assembly and vehicle

Technical Field

The utility model relates to the field of automotive technology, concretely relates to three ball round pins, transmission shaft assembly and vehicle.

Background

The tripod universal joint is a common quasi-constant velocity universal joint in the prior art, is a common mechanical part at present, and structurally comprises a tripod, wherein trisection positions on the tripod are all provided with pin shafts, and the pin shafts are sleeved with ball rings, roller pins, retaining pieces and elastic check rings; however, in the prior art, the AAR section type three-ball pin can bear large torque and large swing angle, and other section type three-ball pins can bear larger torque, but the ball ring slippage is smaller, the single ball ring swing angle is smaller, and the clamping stagnation phenomenon is easy to occur in the operation process; in addition, when the tripod is used, the sharp-angled structures at the ends of the rolling needle and the ball ring are easy to abrade with the tripod, and parts and even a new tripod need to be replaced when the tripod is seriously abraded.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a three ball round pins with install transmission shaft assembly and the vehicle of this three ball round pins, increase the activity space of three ball round pins in the shell of the tube-shape, the great moment of torsion of transmission guarantees that the transmission shaft can both normal use under big pivot angle operating mode.

To achieve the above objective, the present invention provides the following technical solutions: a three-ball pin comprises a three-pin frame, three pin shafts uniformly arranged on the periphery of the three-pin frame and a ball ring assembly sleeved on the pin shafts, wherein the three-pin frame is axially provided with a through hole for mounting a transmission shaft; the ball ring assembly comprises a roller pin, a ball shaft, a limiting structure and a ball ring; the ball shaft is sleeved on the outer wall of the pin shaft, and the roller pin is arranged between the pin shaft and the ball shaft; the limiting structure is arranged on the pin shaft and comprises a clamp and a check ring; the pin shaft is provided with a clamping groove, the clamp and the check ring are sleeved on the clamping groove, the check ring is positioned on the side, close to the roller pin, of the clamp, and the clamp is used for preventing the check ring from being separated from the pin shaft; the limiting structure is used for limiting the movement of the roller pins and the ball shafts in the direction away from the three-pin frame in the axial direction of the pin shafts; the outer wall surface of the ball shaft is set to be an arc-shaped surface, the ball ring is sleeved on the outer wall of the ball shaft, the ball ring has freedom degree of rotation in any direction on the outer wall of the ball shaft, after the transmission shaft is matched with the through hole, the transmission shaft can drive the ball shaft to swing freely in the ball ring, the swing amount is increased, and the torque which can be transmitted by the three-ball pin is increased simultaneously.

Furthermore, the check ring is abutted against the outer periphery of the end face of the hoop and is provided with a three-section step structure with gradually increasing diameter; the three-section step structure extends towards the direction far away from the ball ring assembly and comprises a first section step abutted to the hoop, a third section step used for limiting axial movement of the ball shaft and a second section step used for connecting the first section step and the third section step, and the joints of the second section step, the first section step and the third section step are all arranged to be arc transition structures; the inner edge of the opening at the end part of the ball shaft, which is far away from the three-pin frame, is provided with a step structure matched with the second section of step and the third section of step; the three-section step structure faces to the side far away from the roller pin, the movement of the roller pin, the ball shaft and the ball ring is not hindered, and the step structure increases the swing space of the ball shaft on one hand and strengthens the limitation on the roller pin and the ball shaft on the other hand.

Furthermore, a roller pin retainer ring is arranged at the joint of the roller pin and the tripod, and the diameter of the outer edge of the roller pin retainer ring does not exceed the maximum diameter of the outer wall of the ball shaft; the end faces of the two axial ends of the needle roller are spherical surfaces; the roller pin retainer ring and the spherical surface act simultaneously, so that the abrasion of the roller pin and the three-pin frame is reduced, the outer edge of the roller pin gasket is further enlarged, the end face of the ball shaft, which is in contact with the three-pin frame, is protected, and the abrasion is reduced.

Furthermore, the positions where the pin shaft is matched with the inner wall surface of the roller pin and the positions where the ball shaft is matched with the outer wall surface of the roller pin are both provided with an anti-abrasion layer, and the anti-abrasion layers are used for protecting the roller pin and prolonging the service life of the roller pin.

In addition, the utility model also discloses a transmission shaft assembly, the transmission shaft assembly includes transmission shaft, cylindrical shell and above-mentioned three ball pins, the inside track groove that ball ring adaptation was gone up to above-mentioned three ball pins that is provided with of cylindrical shell; the ball ring is connected with the track groove in an adaptive mode on the three-ball pin, the ball ring can slide in the track, and the ball shaft can freely rotate in the ball ring, so that the transmission shaft drives the spatial arrangement angle of the ball ring assembly in the cylindrical shell to be remarkably increased, larger torque is transmitted, and a large swing angle is realized. The utility model also discloses a vehicle of installing foretell transmission shaft assembly, the inside transmission shaft assembly of vehicle satisfies the angle maximize of arranging with the transmission shaft when whole car arranges.

According to the technical scheme provided by the utility model, the utility model discloses a three ball round pins, transmission shaft assembly and vehicle that technical scheme provided have obtained following beneficial effect:

the utility model discloses a three-ball pin, transmission shaft assembly and a vehicle, which has simple structure and convenient use; the three-ball pin comprises a three-pin frame, an axial through hole, a pin shaft and a ball ring assembly, wherein the ball ring assembly comprises a roller pin, a ball shaft, a limiting structure and a ball ring; the ball shaft is sleeved on the outer wall of the pin shaft, the roller pin is arranged between the pin shaft and the ball shaft, the outer wall surface of the ball shaft is arranged to be an arc surface, the ball ring is sleeved on the outer wall of the ball shaft and has freedom degree of rotation in any direction on the outer wall of the ball shaft, so that the three-ball pin can bear large torque and has a large swing angle and high reliability; the limiting structure comprises a clamp and a check ring, the clamp and the check ring are arranged in a clamping groove formed in the pin shaft, the check ring is positioned on the side, close to the roller pins, of the clamp, and the limiting structure is used for limiting the movement of the roller pins and the ball shafts in the axial direction of the pin shaft to the direction far away from the tripod, so that the roller pins and the ball shafts are prevented from being separated from the pin shaft; after the track groove and the ball ring adaptation inside the cylindrical shell, the transmission shaft and the axial through hole are installed in the transmission shaft assembly, the transmission shaft can drive the ball ring assembly to swing in the cylindrical shell, and the swing spatial arrangement angle is remarkably increased compared with the prior art, larger torque can be transmitted, a large swing angle is realized, and the transmission efficiency of the transmission shaft is improved.

In addition, the utility model also further arranges a roller pin retainer ring at the joint of the roller pin and the three-pin frame, and arranges an anti-abrasion layer at the joint of the roller pin and the pin shaft, which is helpful to reduce the abrasion of the roller pin and prolong the service life; the needle roller retainer ring can extend to the joint of the ball shaft and the tripod, so that the ball shaft is further protected, and the maintenance and replacement of the tripod are reduced; the utility model discloses an install the vehicle of foretell transmission shaft assembly, the inside transmission shaft assembly of vehicle satisfies the angle maximize of arranging with the transmission shaft when whole car arranges, and transmission efficiency is high, and use cost reduces.

It should be understood that all combinations of the foregoing concepts and additional concepts described in greater detail below can be considered as part of the inventive subject matter of the present disclosure unless such concepts are mutually inconsistent.

The foregoing and other aspects, embodiments and features of the present teachings can be more fully understood from the following description taken in conjunction with the accompanying drawings. Additional aspects of the present invention, such as features and/or advantages of exemplary embodiments, will be apparent from the description which follows, or may be learned by practice of the specific embodiments in accordance with the teachings of the present invention.

Drawings

The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:

FIG. 1 is a three-dimensional structure view of the triple-ball pin of the present invention;

FIG. 2 is a detailed structure diagram of the three ball pin of the present invention;

FIG. 3 is an enlarged structure view of the position-limiting structure in FIG. 1;

fig. 4 is a mounting structure diagram of the three-ball pin and the cylindrical shell of the present invention.

Wherein, the specific meaning of each mark is as follows:

1-three pin frame, 11-through hole, 2-pin shaft, 3-needle roller, 31-needle roller retainer ring, 4-ball shaft, 5-limiting structure, 6-ball ring, 7-clamping groove, 8-retainer ring, 81-first section step, 82-second section step, 83-third section step, 9-clamp and 10-cylindrical shell.

Detailed Description

For a better understanding of the technical content of the present invention, specific embodiments are described below in conjunction with the accompanying drawings.

In this disclosure, aspects of the present invention are described with reference to the accompanying drawings, in which a number of illustrative embodiments are shown. Embodiments of the present disclosure are not necessarily intended to include all aspects of the invention. It should be appreciated that the various concepts and embodiments described above, as well as those described in greater detail below, may be implemented in any of numerous ways, as the disclosed concepts and embodiments are not limited to any implementation. Additionally, some aspects of the present disclosure may be used alone or in any suitable combination with other aspects of the present disclosure.

Based on the prior art, most types of three-ball pins cannot simultaneously bear larger torque and have larger swing angles, the clamping stagnation phenomenon is easy to occur in practical production application, the ball ring assembly is seriously abraded, the ball ring assembly needs to be frequently replaced and maintained, and the automobile cost is increased; the utility model aims at providing a simple structure can still have great pivot angle, the reliability is high when bearing great moment of torsion.

The present invention will be further described in detail with reference to the embodiments shown in the drawings.

With reference to the specific structure diagram of the tripod shown in fig. 1, 2 and 3, the tripod comprises a tripod frame 1, three hinge pins 2 uniformly arranged at trisection points of a circumference of the tripod frame 1, and three spherical ring assemblies sequentially sleeved on the hinge pins 2, wherein the tripod frame 1 is axially provided with a through hole 11 for mounting a transmission shaft; the ball ring assembly is sleeved on the pin shaft 2 and comprises a roller pin 3, a ball shaft 4, a limiting structure 5 and a ball ring 6, the ball shaft 4 is sleeved on the outer wall of the pin shaft 2, and the roller pin 3 is arranged between the pin shaft 2 and the ball shaft 4; the outer wall surface of the ball shaft 4 is an arc surface, the ball ring 6 is sleeved on the outer wall of the ball shaft 4, and the ball ring 6 has freedom degree of rotating in any direction on the outer wall of the ball shaft 4; the limiting structure 5 is arranged on the pin shaft 2 and used for limiting the movement of the roller pin 3 and the ball shaft 4 in the direction away from the tripod 1 in the axial direction of the pin shaft 2 and preventing the roller pin 3 and the ball shaft 4 from being separated from the pin shaft 2; after the cylindrical shell 10 and the three-ball pin, the transmission shaft and the through hole 11 are installed, the transmission shaft can drive the ball shaft 4 to swing freely in the ball ring 6 because the ball ring 6 is matched and fixed with the track groove in the cylindrical shell 10, and compared with the three-ball pin in the prior art, the swing amount of the three-ball pin is increased, and the torque which can be transmitted by the three-ball pin is also increased.

The limiting structure 5 comprises a hoop 9 and a check ring 8; for the adaptation installation clamp 9, be provided with draw-in groove 7 on round pin axle 2, clamp 9 and retaining ring 8 suit are on draw-in groove 7 to retaining ring 8 is located clamp 9 and is close to one side of kingpin 3, and clamp 9 is used for preventing that retaining ring 8 from deviating from round pin axle 2. Usually, the diameter of the clamping band 9 is larger than that of the groove 7 and smaller than the diameter of the outer edge of the gasket 8, so as to enhance the limiting effect on the gasket 8, and the retainer ring 8 is generally a steel wire retainer ring.

Further referring to fig. 2, the retainer ring 8 abuts against the end surface of the clamp 9, and is provided with a three-step structure with a gradually increasing diameter along the circumference; the three-section step structure extends towards the direction far away from the ball ring assembly and comprises a first section step 81 abutted to the hoop 9, a third section step 83 used for limiting the axial movement of the ball shaft 4 and a second section step 82 used for connecting the first section step 81 and the third section step 83, and the joints of the second section step 82, the first section step 81 and the third section step 83 are both of arc transition structures; in addition, the inner edge of the opening at the end part of the ball shaft 4 far away from the tripod 1 is provided with a step structure matched with the second step 82 and the third step 83; the three-section step structure is towards the one side of keeping away from kingpin 3 and is set up, does not hinder the motion of kingpin 3 and pearl axle 4 and pearl ring, and the retaining ring 8 of three-section step structure simultaneously can increase the swing space of pearl axle 4 on the one hand compared with current retaining ring, strengthens the spacing to kingpin 3 and pearl axle 4 on the other hand, prevents that pearl axle 4 from deviating from the outer wall of kingpin 3.

In some embodiments, in order to solve the problem of abrasion between the sharp corners of the ends of the needle roller 3 and the ball axle 4 and the spider 1, a needle roller retainer 31 is arranged at the joint of the needle roller 3 and the spider 1, and the diameter of the outer edge of the needle roller retainer 31 does not exceed the maximum diameter of the outer wall of the ball axle 4; the annular surface of the needle roller retainer ring 31 can be enlarged to the contact position of the ball shaft 4 and the tripod 1, meanwhile, the end surface of the ball shaft 4 in contact with the tripod 1 is protected, the abrasion of the needle roller 3 and the ball shaft 4 is reduced, and the maintenance and replacement times of the tripod are reduced. In the embodiment shown in fig. 2, in order to enhance the protection of the needle roller 3, the end surfaces of both ends of the needle roller 3 in the axial direction are provided as spherical surfaces, and the friction between the needle roller 3 and the needle roller washer 31 is converted from sliding friction to rolling friction, thereby reducing the wear by reducing the friction force.

In some embodiments, an anti-abrasion layer is further disposed at the position where the pin shaft 2 is fitted to the inner wall surface of the needle roller 3 and at the position where the ball shaft 4 is fitted to the outer wall surface of the needle roller 3, the needle roller 4 is protected by the anti-abrasion layer, abrasion of the outer wall surface of the pin shaft 2 and the inner wall surface of the ball shaft 4 is reduced, and the service life of the whole three-ball pin is prolonged.

The utility model provides a solve above-mentioned three ball round pins and can't satisfy the hormone problem of bearing big moment of torsion and having big pivot angle simultaneously, still provided a transmission shaft assembly, this transmission shaft assembly includes transmission shaft, cylindrical shell 10 and three ball round pins, wherein the inside track groove with three ball round pin adaptation that is provided with of cylindrical shell 10, cylindrical shell 10 mainly with three ball round pin on the ball ring 6 adaptation connection, ball ring 6 can slide on the track groove, ball axle 4 can freely rotate in ball ring 6; therefore, the transmission shaft drives the spatial arrangement angle of the ball ring assembly in the cylindrical shell 10 to be obviously increased, larger torque is transmitted, a large swing angle is realized, and the transmission efficiency of the transmission shaft is further improved.

The utility model discloses a solve the above-mentioned three ball round pins and can't satisfy simultaneously and bear the big moment of torsion and have the hormone problem of big pivot angle, still provided a vehicle of installing foretell transmission shaft assembly, the inside transmission shaft assembly of vehicle satisfies the angle maximize of arranging with the transmission shaft when whole car arranges, and the inside transmission shaft assembly transmission of vehicle is efficient, and the whole use cost of vehicle reduces.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. The present invention is intended to cover by those skilled in the art various modifications and adaptations of the invention without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention is subject to the claims.

Claims

1. A tripod ball comprises a tripod, three pin shafts uniformly arranged on the circumference of the tripod and a ball ring assembly sleeved on the pin shafts, wherein the tripod is axially provided with a through hole for mounting a transmission shaft;

the ball shaft is sleeved on the outer wall of the pin shaft, and the roller pin is arranged between the pin shaft and the ball shaft; the outer wall surface of the ball shaft is an arc surface, the ball ring is sleeved on the outer wall of the ball shaft, and the ball ring has freedom degree of rotating in any direction on the outer wall of the ball shaft; the limiting structure is arranged on the pin shaft and comprises a clamp and a check ring; the pin shaft is provided with a clamping groove, the clamp and the check ring are sleeved on the clamping groove, the check ring is positioned on the side, close to the roller pin, of the clamp, and the clamp is used for preventing the check ring from being separated from the pin shaft; the limiting structure is used for limiting the movement of the roller pin and the ball shaft in the direction away from the tripod in the axial direction of the pin shaft.

2. The tripod ball as claimed in claim 1, wherein the retainer ring is provided with a three-step structure with gradually increasing diameter along the circumference abutting against the end surface of the clamping band; the three-section step structure extends towards the direction far away from the ball ring assembly and comprises a first section step abutted to the hoop, a third section step used for limiting axial movement of the ball shaft and a second section step used for connecting the first section step and the third section step, and the joints of the second section step, the first section step and the third section step are all arc transition structures.

3. The tripod according to claim 2, wherein the inner edge of the opening at the end of the ball stud remote from the tripod is provided with a step structure adapted to the steps of the second and third segments.

4. The tripod according to claim 1, wherein a needle retainer is provided at the joint of the needle roller and the tripod, and the outer diameter of the needle retainer does not exceed the maximum diameter of the outer wall of the ball shaft.

5. The tripod according to claim 4, wherein the end faces of both axial ends of the needle roller are provided as spherical surfaces.

6. The tripod according to claim 1, wherein the positions of the pin shaft adapted to the inner wall surface of the roller pin and the positions of the ball shaft adapted to the outer wall surface of the roller pin are provided with wear-resistant layers.

7. A drive shaft assembly, comprising a drive shaft, a cylindrical shell and the tripod of any one of claims 1 to 6, wherein the cylindrical shell is internally provided with a track groove matched with the tripod bead ring of any one of claims 1 to 6.

8. A vehicle comprising the driveshaft assembly of claim 7.