阅读说明：本技术 一种轻量化三球销式等速万向节总成 (Lightweight tripod constant velocity universal joint assembly ) 是由 林佳锐 王松 于 2020-05-19 设计创作，主要内容包括：本发明属于汽车传动系统零部件技术领域,具体涉及一种轻量化三球销式等速万向节总成,包括三销架和三球销壳,三销架设置在三球销壳内部,三销架外侧面均匀分布有三个销轴,销轴上套设有滚环,销轴的外端部开设有凹腔,滚环与所述销轴的连接处且位于所述销轴的外端部设置有挡片,挡片内侧面中部固定设置有螺纹柱；本发明通过设置凹腔,减轻了销轴的重量,使得万向节总成整体轻量化,同时,通过螺纹柱与销轴的旋合连接,对销轴的开口端起到加强固定的作用,避免滚环对销轴产生的压力对销轴造成变形损坏,相比较现有的实心销轴,该结构节省了将近三个凹腔的重量,进而降低了车辆的重量,降低油耗,使其更加经济环保。(The invention belongs to the technical field of automobile transmission system parts, and particularly relates to a lightweight tripod constant velocity universal joint assembly, which comprises a tripod rest and a tripod shell, wherein the tripod rest is arranged inside the tripod shell, three pin shafts are uniformly distributed on the outer side surface of the tripod rest, a rolling ring is sleeved on each pin shaft, a concave cavity is formed in the outer end part of each pin shaft, a separation blade is arranged at the joint of each rolling ring and each pin shaft and positioned at the outer end part of each pin shaft, and a threaded column is fixedly arranged in the middle of the inner side surface of each separation blade; the universal joint assembly is light in weight due to the fact that the concave cavities are formed, the opening end of the pin shaft is reinforced and fixed due to the fact that the threaded columns are connected with the pin shaft in a screwing mode, deformation and damage of the pin shaft due to pressure generated by the rolling rings on the pin shaft are avoided, compared with the existing solid pin shaft, the structure saves the weight of nearly three concave cavities, the weight of a vehicle is further reduced, oil consumption is reduced, and the universal joint assembly is more economical and environment-friendly.)

1. The utility model provides a lightweight tripod constant velocity cardan joint assembly, includes tripod (1) and tripod shell (2), tripod (1) sets up inside tripod shell (2), tripod (1) lateral surface evenly distributed has three round pin axle (5), the cover is equipped with on round pin axle (5) rolls ring (3), roll ring (3) and correspond the medial surface of tripod shell (2) is provided with perpendicularly rolls ring spout (21), roll ring (3) with roll ring spout (21) clearance fit, its characterized in that: the outer end of the pin shaft (5) is provided with a cavity (9), the joint of the rolling ring (3) and the pin shaft (5) and the outer end of the pin shaft (5) are provided with a convex ring (6), the joint of the rolling ring (3) and the pin shaft (5) and the outer end of the pin shaft (5) are provided with a baffle (4), the middle of the inner side surface of the baffle (4) is fixedly provided with a threaded column (8), the threaded column (8) is embedded into the open end of the cavity (9), threads are arranged on the inner surface of the cavity (9), and the threaded column (8) and the cavity (9) are connected in a screwing mode through the threads.

2. A lightweight tripod constant velocity joint assembly according to claim 1, wherein: an arc-shaped bulge (22) is formed between every two adjacent rolling ring sliding grooves (21), an arc-shaped groove (23) is formed in the outer surface, corresponding to the tripod shell (2), of the arc-shaped bulge (22), and the arc-shaped bulge (22) is in clearance fit with the tripod frame (1).

3. A lightweight tripod constant velocity joint assembly according to claim 1, wherein: the thickness of the threaded column (8) is equal to two thirds of the thickness of the pin shaft (5).

4. A lightweight tripod constant velocity joint assembly according to claim 1, wherein: the middle of each two adjacent pin shafts (5) is provided with a blind hole (10) corresponding to the outer surface of the tripod (1).

5. The light weight tripod constant velocity joint assembly of claim 4, wherein: the shortest distance between the bottom end of the blind hole (10) and the inner surface of the tripod (1) is equal to the shortest distance between the bottom end of the pin shaft (5) and the inner surface of the tripod (1).

6. A lightweight tripod constant velocity joint assembly according to claim 1, wherein: an inner hexagonal hole (7) is formed in the middle of the outer surface of the separation blade (4), and the depth of the inner hexagonal hole (7) is equal to the thickness of the separation blade (4).

7. A lightweight tripod constant velocity joint assembly according to claim 1, wherein: the diameter of the baffle plate (4) is equal to the diameter of the convex ring (6) which is equal to the bore diameter of the rolling ring (3) which is ten times nine.

Technical Field

The invention belongs to the technical field of automobile transmission system parts, and particularly relates to a lightweight tripod constant velocity universal joint assembly.

Background

The universal joint is a universal joint, and the English name (univeral joint) is a part for realizing variable-angle power transmission, is used for changing the position of a transmission axis direction, and is a joint part of a universal transmission device of an automobile driving system. The universal joint is combined with a transmission shaft and is called a universal joint transmission device. On a vehicle driven by a rear wheel of a front engine, a universal joint transmission device is arranged between an output shaft of a transmission and an input shaft of a main speed reducer of a drive axle; the front engine front wheel driven vehicle omits a transmission shaft, and the universal joint is arranged between a front axle half shaft which is responsible for driving and steering and wheels.

The universal joint is somewhat like a joint on a human limb in structure and function, allowing the included angle between the parts being connected to vary over a range. In order to meet the requirements of power transmission, adaptation to steering and angle change caused by vertical jumping generated during the running of an automobile, a drive axle of a front-drive automobile is connected with a half shaft and an axle through a common universal joint. However, because of the limitation of axial dimension, the required deflection angle is large, and the instantaneous angular velocities of the output shaft and the input shaft cannot be equalized by a single universal joint, vibration is easily caused, damage to components is aggravated, and great noise is generated, so that various constant velocity universal joints are widely used. In front drive vehicles, two constant velocity joints are used for each axle half, with the joint near the transaxle being the inboard joint and the joint near the axle being the outboard joint. On a rear drive vehicle, the engine, the clutch and the transmission are mounted on the frame as a whole, and the drive axle is connected with the frame through the elastic suspension, and a distance is reserved between the engine and the clutch and needs to be connected. The included angle and the distance between the output shaft of the speed changer and the input shaft of the main speed reducer of the drive axle can be changed due to the fact that the road surface is not flat and jumps during the running of the automobile, the load changes or the difference between the installation positions of the two assemblies and the like, so that the universal joint transmission form of the rear drive automobile adopts double universal joints, namely, the two ends of the transmission shaft are respectively provided with one universal joint, the included angle of the two ends of the transmission shaft is equal, and the instantaneous angular speeds of the output shaft and the input shaft are always equal.

The tripod universal joint comprises a tripod frame, wherein pin shafts are arranged at trisection positions on the tripod frame, and rollers are sleeved on the pin shafts; the existing tripod type constant velocity universal joint assembly has the advantages that the pin shafts fixed on the tripod are of solid structures, the tripod is of a hollow structure, the weak point of the structure lies in the hollow tripod, the quality of the pin shafts can be guaranteed through the solid structures, the whole quality of the universal joint can be met without being solid actually, the solid structures consume materials, meanwhile, the whole weight of the universal joint is improved, the quality of the whole automobile is improved, the power performance and the economical efficiency of the automobile are affected, and therefore a light tripod type constant velocity universal joint assembly is provided.

Disclosure of Invention

The invention aims to provide a lightweight tripod constant velocity universal joint assembly, and aims to solve the problems that the conventional tripod constant velocity universal joint assembly proposed in the background art has the solid structure of all the pin shafts fixed on a tripod, the tripod is of a hollow structure, and the structure has a weak point of the hollow tripod, so that the solid structure can ensure the quality of the pin shafts, but the solid structure is not required to be solid, the integral quality of the universal joint can be met, the solid structure consumes materials, the integral weight of the universal joint is improved, the integral quality of the whole automobile is improved, and the dynamic property and the economical efficiency of the automobile are influenced.

In order to achieve the purpose, the invention provides the following technical scheme:

a lightweight tripod constant velocity universal joint assembly comprises a tripod and a tripod shell, wherein the tripod is arranged inside the tripod shell, three pin shafts are uniformly distributed on the outer side surface of the tripod, rolling rings are sleeved on the pin shafts, rolling ring sliding grooves are vertically arranged on the inner side surfaces of the rolling rings, which correspond to the tripod shell, the rolling rings are in clearance fit with the rolling ring sliding grooves, concave cavities are formed in the outer end parts of the pin shafts, convex rings are arranged at the connecting parts of the rolling rings and the pin shafts and on the outer surfaces of the pin shafts, retaining pieces are arranged at the connecting parts of the rolling rings and the pin shafts and on the outer end parts of the pin shafts, threaded columns are fixedly arranged in the middle parts of the inner side surfaces of the retaining pieces, the threaded columns are embedded into the opening ends of the concave cavities, threads are arranged on the; the existing tripod constant velocity universal joint assembly has the advantages that the pin shafts fixed on the tripod are all of solid structures, the tripod is of a hollow structure, the weak point of the structure lies in the hollow tripod, although the solid structures can ensure the quality of the pin shafts, the pin shafts are not required to be solid but can also meet the integral quality of the universal joint, the solid structures consume materials, and the integral weight of the universal joint is improved, so the weight of the pin shafts is reduced by arranging the concave cavities, the use of the universal joint assembly is not influenced under the condition that the cooperation of the tripod and the pin shafts is ensured, the integral light weight of the universal joint assembly can be realized, meanwhile, the separation blades and the convex rings are arranged, the rolling rings are limited by the mutual cooperation between the separation blades and the convex rings, the rolling rings are prevented from deviating in the rotation, the rolling rings are prevented from being clamped, the use of the universal joint is influenced, in addition, through arranging the threaded columns, through the screwing connection of the threaded column and the pin shaft, the open end of the pin shaft is strengthened and fixed, the phenomenon that the strength of the pin shaft is reduced due to the fact that the cavity is formed in the pin shaft is avoided, the pin shaft is broken, even if the pin shaft cannot be broken, the pin shaft is prevented from being deformed and damaged by pressure generated by the rolling ring on the pin shaft, the service life of the pin shaft is prolonged, and the practicability of the universal joint assembly is improved.

Preferably, an arc-shaped bulge is formed between every two adjacent rolling ring sliding grooves, an arc-shaped groove is formed on the arc-shaped bulge corresponding to the outer surface of the tripod head, and the arc-shaped bulge is in clearance fit with the tripod head; through adopting above-mentioned technical scheme, set up convex arch and convex recess, utilize the cooperation between adjacent convex arch and convex recess, further restricted the removal of rolling the ring, the position that makes the rolling ring remove is unique, avoid the rolling ring to take place the skew and lead to the card of rolling the ring dead, thereby influence the use of universal joint assembly, in addition, the surface of comparing is cylindrical structure's tripod shell, the tripod shell volume of this kind of structure reduces, the area occupied of tripod shell has been reduced, and simultaneously, the weight of universal joint assembly has further been reduced.

Preferably, the thickness of the threaded column is equal to two thirds of the thickness of the pin shaft; through adopting above-mentioned technical scheme, satisfying under the cooperation between screw thread post and the internal surface screw thread of cavity, further guaranteeing the structural strength of screw thread post, preventing that the screw thread post from leading to the fracture of screw thread post owing to receive great impact, guaranteeing the space of cavity simultaneously as far as possible to guarantee the activity of screw thread post in the cavity, reduce the whole weight of universal joint simultaneously.

Preferably, the middle of two adjacent pin shafts is provided with a blind hole corresponding to the outer surface of the tripod rest; through adopting above-mentioned technical scheme, set up the weight of reduction tripod that the blind hole can be reasonable to guarantee the intensity of tripod, simultaneously, the installation of the tripod of being convenient for, thereby improved the practicality of universal joint assembly.

Preferably, the shortest distance between the bottom end of the blind hole and the inner surface of the tripod is equal to the shortest distance between the bottom end of the pin shaft and the inner surface of the tripod; through adopting above-mentioned technique, when the trompil falls heavily, ensure that the structural strength of trompil department is not less than the structural strength of the weaker place of tripod self structure, avoid because the trompil reason leads to the structural strength reduction of trompil department to influence the use of follow-up universal joint assembly, and then improved the practicality of universal joint assembly.

Preferably, the middle part of the outer surface of the separation blade is provided with an inner hexagonal hole, and the depth of the inner hexagonal hole is equal to the thickness of the separation blade; through adopting above-mentioned technical scheme, set up interior hexagonal hole, be convenient for open through the instrument and close the fastening separation blade soon, easy to assemble or dismantle and roll the ring, compare bellied bolt, this structure occupation space not, and do not cause the interference to the work of universal joint assembly.

Preferably, the diameter of the baffle plate is equal to the diameter of the convex ring and is equal to the bore diameter of the nine-tenth rolling ring; through adopting above-mentioned technical scheme, be convenient for carry on spacingly to rolling the ring, avoid simultaneously area of contact too big to lead to frictional force to increase to influence the use of universal joint assembly.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the universal joint assembly, the concave cavity is formed, so that the weight of the pin shaft is reduced, the universal joint assembly is integrally lightened, the threaded column is arranged, the opening end of the pin shaft is reinforced and fixed through the screwing connection of the threaded column and the pin shaft, the phenomenon that the pin shaft is broken due to the fact that the strength of the pin shaft is reduced due to the fact that the concave cavity is formed in the pin shaft is avoided, even if the pin shaft cannot be broken, the pin shaft can be prevented from being deformed and damaged due to pressure generated by the rolling ring on the pin shaft, compared with the existing solid pin shaft, the structure saves the weight of nearly three concave cavities, further reduces the weight of a vehicle, reduces oil consumption, and is more economical and environment-friendly.

2. Compared with a tripod shell with a cylindrical outer surface, the tripod head with the circular arc-shaped groove has the advantages that the structure is small in size and light in weight, the structural strength of the threaded column is guaranteed, the space of the concave cavity is guaranteed as far as possible, and the overall weight of the universal joint is further reduced.

3. The blind holes are arranged, the weight of the tripod is reasonably reduced in a hole opening mode, the structural strength of the hole opening position is not lower than that of the weaker part of the tripod structure when the weight of the hole is reduced, in addition, the inner hexagonal hole is arranged, the rolling ring is convenient to mount or dismount, the occupied space is avoided, and the rolling ring is convenient to limit.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a cross-sectional view of the tripod head of the present invention;

in the figure: 1. a three-pin frame; 2. a tripod shell; 21. a rolling ring chute; 22. a circular arc-shaped bulge; 23. a circular arc-shaped groove; 3. rolling a ring; 4. a baffle plate; 5. a pin shaft; 6. a convex ring; 7. an inner hexagonal hole; 8. a threaded post; 9. a concave cavity; 10. and (4) blind holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.

Referring to fig. 1-3, the present invention provides a technical solution:

a lightweight tripod constant velocity universal joint assembly comprises a tripod 1 and a tripod shell 2, wherein the tripod 1 is arranged inside the tripod shell 2, three pin shafts 5 are uniformly distributed on the outer side surface of the tripod 1, a rolling ring 3 is sleeved on each pin shaft 5, a rolling ring chute 21 is vertically arranged on the inner side surface of each rolling ring 3, which corresponds to the tripod shell 2, each rolling ring 3 is in clearance fit with the corresponding rolling ring chute 21, a concave cavity 9 is formed in the outer end part of each pin shaft 5, a convex ring 6 is arranged at the joint of each rolling ring 3 and each pin shaft 5 and on the outer surface of each pin shaft 5, a blocking piece 4 is arranged at the joint of each rolling ring 3 and each pin shaft 5 and on the outer end part of each pin shaft 5, a threaded column 8 is fixedly arranged in the middle part of the inner side surface of each blocking piece 4, each threaded column 8 is embedded into the open end of the corresponding concave cavity 9, threads are arranged on the; the existing tripod constant velocity universal joint assembly has the advantages that the pin shafts 5 fixed on the tripod 1 are all of solid structures, the tripod 1 is of a hollow structure, the weak point of the structure is the hollow tripod 1, although the solid structure can ensure the quality of the pin shafts 5, the pin shafts 5 can meet the integral quality of the universal joint without being solid, the solid structure consumes materials, and simultaneously the integral weight of the universal joint is improved, therefore, the weight of the pin shafts 5 is reduced by arranging the concave cavities 9, under the condition of ensuring the matching of the tripod 1 and the pin shafts 5, the use of the universal joint assembly is not influenced, the integral lightweight of the universal joint assembly can be enabled, simultaneously, the baffle plates 4 and the convex rings 6 are arranged, the rolling rings 3 are limited by the mutual matching between the baffle plates 4 and the convex rings 6, the rolling rings 3 are prevented from shifting in the rotation, and the rolling rings 3 are blocked, thereby influence the use of universal joint, in addition, through setting up screw thread post 8, close soon through screw thread post 8 and round pin axle 5 and be connected, play the effect of strengthening fixedly to the open end of round pin axle 5, avoid having reduced the intensity of round pin axle 5 because the cavity 9 has been seted up on round pin axle 5, lead to the fracture of round pin axle 5, even round pin axle 5 can not cracked, also can avoid rolling the pressure that ring 3 produced round pin axle 5 and cause deformation damage to round pin axle 5, thereby the life of round pin axle 5 has been improved, and then the practicality of universal joint assembly has been improved.

As a specific embodiment of the present invention, an arc protrusion 22 is formed between two adjacent rolling ring sliding slots 21, the arc protrusion 22 forms an arc groove 23 corresponding to the outer surface of the tripod head 2, and the arc protrusion 22 is in clearance fit with the tripod head 1; through adopting above-mentioned technical scheme, set up convex protrusion 22 and convex recess 23, utilize the cooperation between adjacent convex protrusion 22 and convex recess 23, further restricted the removal of rolling ring 3, the position that makes rolling ring 3 remove is unique, avoid rolling ring 3 to take place the skew and lead to the card of rolling ring 3 to die, thereby influence the use of universal joint assembly, in addition, the surface of comparing is cylindrical structure's tripod shell 2, tripod shell 2 volume of this kind of structure reduces, the area occupied of tripod shell 2 has been reduced, and simultaneously, the weight of universal joint assembly has further been reduced.

As a specific embodiment of the invention, the thickness of the threaded post 8 is equal to two thirds of the thickness of the pin 5; through adopting above-mentioned technical scheme, satisfying under the cooperation between screw thread post 8 and the 9 internal surface screw threads of cavity, further guaranteeing screw thread post 8's structural strength, preventing screw thread post 8 and leading to screw thread post 8's fracture owing to receive great impact, guarantee cavity 9's space simultaneously as far as possible to guarantee the activity of screw thread post 9 in cavity 9, reduce the whole weight of universal joint simultaneously.

As a specific embodiment of the invention, a blind hole 10 is arranged between two adjacent pin shafts 5 corresponding to the outer surface of the tripod 1; through adopting above-mentioned technical scheme, set up the weight of reduction tripod 1 that blind hole 10 can be reasonable to guarantee the intensity of tripod 1, simultaneously, the installation of the tripod 1 of being convenient for, thereby improved the practicality of universal joint assembly.

As a specific embodiment of the present invention, the shortest distance between the bottom end of the blind hole 10 and the inner surface of the tripod 1 is equal to the shortest distance between the bottom end of the pin 5 and the inner surface of the tripod 1; through adopting above-mentioned technique, when the trompil falls heavily, ensure that the structural strength of trompil department is not less than the structural strength of the weaker place of tripod 1 own structure, avoid because the structural strength of trompil reason leads to the trompil department reduces to influence the use of follow-up universal joint assembly, and then improved the practicality of universal joint assembly.

As a specific embodiment of the invention, the middle part of the outer surface of the baffle plate 4 is provided with an inner hexagonal hole 7, and the depth of the inner hexagonal hole 7 is equal to the thickness of the baffle plate 4; through adopting above-mentioned technical scheme, set up interior hexagonal hole 7, be convenient for open through the instrument and close fastening separation blade 4 soon, easy to assemble or dismantle and roll ring 3, the bellied bolt of comparison, this structure occupation space not, and does not cause the interference to the work of universal joint assembly.

As a specific embodiment of the present invention, the diameter of the baffle 4 is equal to the bore diameter of the rolling ring 3, which is ten times the diameter of the convex ring 6; through adopting above-mentioned technical scheme, be convenient for carry on spacingly to rolling ring 3, avoid simultaneously area of contact too big to lead to frictional force to increase to influence the use of universal joint assembly.

The working principle and the using process of the invention are as follows:

the cavity 9 is arranged, so that the weight of the pin shaft 5 is reduced, the universal joint assembly is integrally light-weighted, the threaded column 8 is arranged, the opening end of the pin shaft 5 is reinforced and fixed by screwing the threaded column 8 and the pin shaft 5, the phenomenon that the pin shaft 5 is broken due to the fact that the cavity 9 is formed in the pin shaft 5, and the pin shaft 5 is deformed and damaged by pressure generated by the rolling ring 3 on the pin shaft 5 even if the pin shaft 5 cannot be broken is avoided, so that the weight of a vehicle is reduced, the oil consumption is reduced, and the universal joint assembly is more economical and environment-friendly;

set up convex recess 23, the surface is cylindrical structure's tripod shell 2 compared, this structure volume reduces and weight reduction, guarantee the structural strength of screw thread post 8, guarantee the space of cavity 9 simultaneously as far as possible, and then reduce the whole weight of universal joint, set up blind hole 10, rationally reduce the weight of tripod frame 1 through the mode of trompil, when the trompil falls heavily, ensure that the structural strength of trompil department is not less than the structural strength of the weaker place of tripod frame 1 own structure, hexagonal hole 7 in the setting, be convenient for open and close fastening separation blade 4 soon through the instrument, easy to assemble or dismantle rolling ring 3, compare bellied bolt, this structure does not take up space, be convenient for carry on spacingly to rolling ring 3, the diameter of separation blade 4 slightly is greater than the diameter of bulge loop 6, avoided the too big frictional force increase that leads to of area of contact.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.