CN216975570U

CN216975570U - Automobile transmission shaft

Info

Publication number: CN216975570U
Application number: CN202123431313.7U
Authority: CN
Inventors: 颜永生; 高静闻; 谭平
Original assignee: Chongqing Transmission Shaft Co ltd
Current assignee: Chongqing Transmission Shaft Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-07-15
Anticipated expiration: 2031-12-30

Abstract

The utility model relates to the technical field of transmission shafts, in particular to an automobile transmission shaft which comprises a spline shaft fork, a spline sleeve and a first shaft tube, wherein the spline shaft fork is in spline connection with the spline sleeve, the spline sleeve is connected with the first shaft tube, a dust cover is covered on the outer side of the joint of the spline shaft fork and the spline sleeve, the dust cover is fixedly connected with the spline shaft fork, and the dust cover is made of metal materials. The utility model effectively solves the problems that the traditional transmission shaft has too many parts and insufficient protection strength on the transmission shaft.

Description

Automobile transmission shaft

Technical Field

The utility model relates to the technical field of transmission shafts, in particular to an automobile transmission shaft.

Background

The transmission shaft consists of a shaft tube, a telescopic sleeve and a universal joint. The telescopic sleeve can automatically adjust the change of the distance between the transmission and the drive axle. The universal joint ensures the change of the included angle between two axes of the output shaft of the speed changer and the input shaft of the drive axle and realizes the equal angular speed transmission of the two shafts. The transmission shaft is a fitting for a round object which is movable or rotatable by connecting or assembling various fittings, and is generally made of a light alloy steel pipe having excellent torsion resistance. In a front engine rear wheel drive vehicle, the propeller shaft is the shaft that transmits the rotation of the transmission to the final drive and may be connected by a multi-joint universal joint.

The performance and the reliability of the operation of transmission shaft, direct influence car system and NVH performance of traveling, transmission shaft among the prior art, it is vice to be through the flexible spline in the transmission shaft many, it is flexible to satisfy the transmission at the length of operation process, and the cooperation is accomplished through integral key shaft and slip yoke to the middle spline pair, the integral key shaft is in the same place with the central siphon welding, the thin hourglass link of transmission shaft of this structure is on the central siphon, and the intensity of integral key shaft and slip yoke is greater than the central siphon far away, there is the waste in intensity, and integral key shaft and slip yoke realize the flexible of transmission shaft, the structure is complicated, spare part is many, be unfavorable for the lightweight of transmission shaft.

The utility model discloses a utility model with publication number CN211550324U discloses a novel transmission shaft uses spline shaft fork to replace integral key shaft and slip fork, has reduced spare part quantity, but this utility model's dirt proof boot adopts rubber construction to make, to go and to need walk at domatic unevenness such as mountain region, the vehicle in the too big highway section of jolting, such structure leads to the damage of inside spline housing and spline shaft fork because of too big jolting easily.

SUMMERY OF THE UTILITY MODEL

The utility model provides an automobile transmission shaft, which aims to solve the problems that the traditional transmission shaft has too many parts and has insufficient protection strength on the transmission shaft.

In order to solve the technical problem, the utility model provides an automobile transmission shaft which comprises a spline shaft yoke and a spline sleeve, wherein the spline shaft yoke is in spline connection with the spline sleeve, the automobile transmission shaft further comprises a first shaft tube, the spline sleeve is connected with the first shaft tube, a dust cover covers the outer side of the joint of the spline shaft yoke and the spline sleeve, the dust cover is fixedly connected with the spline shaft yoke, and the dust cover is made of metal materials.

Adopt above-mentioned technical scheme, the slip spline on the first shaft pipe is vice to include spline shaft yoke, spline housing and metal material's dust cover, has replaced the integral key shaft and the slip yoke of traditional structure through spline shaft yoke, has reduced the quantity of part, adopts metal material's dust cover to play fine guard action to this key flexible position of spline shaft yoke and spline housing simultaneously. Compared with the prior art, the spline shaft fork is arranged to replace a spline shaft and a sliding fork in the traditional structure, so that the number of parts of the transmission shaft is reduced, the light weight of the transmission shaft is realized, and the use performance of the transmission shaft is improved; because the whole exposure of transmission shaft is outside, when the mountain road or the stone way that face to jolt, sharp objects such as the stone that splash cause the transmission shaft to damage easily, but the transmission shaft can effectively reduce the transmission shaft because of the risk that sharp object damaged under the protection of metal material dust cover, compares the dust cover of the easy damaged rubber material, and the dust cover protective properties of metal material is stronger.

Furthermore, the other end of the first shaft pipe is fixedly connected with a universal joint fork, and the universal joint fork is connected with a flange fork through a universal joint. The flange fork is a main part for connecting the transmission and the drive axle and a part for bearing high-speed transmission, and is connected with the first shaft tube through the universal joint and the universal joint fork.

Furthermore, the spline shaft fork is connected with the spline sleeve fork through a universal joint, a spline shaft is connected in the spline sleeve fork in a sliding mode, and a supporting assembly is fixedly sleeved on the spline shaft. The supporting assembly can effectively absorb the vibration of the transmission shaft, reduce noise, bear radial load and effectively improve the comprehensive performance of the transmission shaft.

Furthermore, the other end of the spline shaft is fixedly connected with a second shaft pipe, the other end of the second shaft pipe is fixedly connected with a universal joint fork, and the universal joint fork is connected with a flange fork through a universal joint. Form the duplex transmission shaft through the fixed connection of first central siphon and second central siphon and each part, provide better accurate constant speed characteristic, applicable in big moment of torsion, wide angle, high rotational speed transmission, more make things convenient for special highway sections such as the highway section of jolting, mountain road, stone road to drive a vehicle.

Further, the supporting assembly comprises an inner supporting ring, an outer supporting ring, a sealing ring, a dust cover and a bearing arranged in the inner supporting ring, the bearing is sleeved with the spline shaft, the inner supporting ring is arranged in the outer supporting ring, the sealing ring is arranged outside the outer supporting ring, and the dust cover is arranged outside the sealing ring. The bearing is protected by the inner support ring and the outer support ring, and the dust cover effectively prevents dust from invading.

Furthermore, a special-shaped through hole is formed in the sealing ring. A certain number of special-shaped through holes are uniformly arranged on the sealing ring, so that the vibration absorption characteristic of the supporting assembly is improved.

Further, the end parts of the first shaft tube and the second shaft tube are provided with balance pieces. The balance weight is welded at the end parts of the first shaft tube and the second shaft tube, so that the dynamic balance performance of the transmission shaft is effectively improved.

Furthermore, the number of the balance pieces is n, wherein n is more than or equal to 1 and less than or equal to 3. The number of the balance blocks is limited, and the quality of the transmission shaft is ensured.

Further, the outer surface of the spline shaft yoke is provided with a wear-resistant layer coated by nylon powder. The wearing layer is formed by the even coating of pulverous nylon, and the setting of wearing layer can effectively promote the wearability of spline shaft yoke, prolongs the life of transmission shaft.

Furthermore, the thickness of the wear-resistant layer is d, and d is more than or equal to 0.2mm and less than or equal to 0.4 mm. The thickness of the wear-resistant layer is 0.2mm-0.4mm, the use of the spline shaft cannot be influenced by the design of the thin wear-resistant layer, and the service life of the transmission shaft can be prolonged.

Drawings

Fig. 1 is a schematic view of a vehicle drive shaft according to the present invention.

Fig. 2 is an exploded view of a support assembly for a vehicle drive shaft according to the present invention.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the bearing comprises a balance sheet 1, a second shaft pipe 2, a spline shaft 3, a supporting assembly 4, a spline housing fork 5, a spline shaft fork 6, a dust cover 7, a spline housing 8, a first shaft pipe 9, an inner supporting ring 10, an outer supporting ring 11, a bearing 12, a sealing ring 13, a dust cover 14 and a special-shaped through hole 15.

The embodiment is basically as shown in the attached figures 1 and 2:

the utility model provides an automobile transmission shaft, includes first central siphon 9 and second central siphon 2, and the welding of 2 left ends of second central siphon has the universal joint fork, is connected with the universal joint on the universal joint fork, and the universal joint fork passes through the universal joint to be connected with the flange fork, and the welding of 2 right-hand members of second central siphon has integral key shaft 3, and the fixed supporting assembly 4 that has cup jointed on integral key shaft 3, and integral key shaft 3 right-hand members are connected with spline housing fork 5. Be connected with the universal joint on the spline housing yoke 5, spline housing yoke 5 is connected with spline shaft yoke 6 through the universal joint, 6 splined connection of spline shaft yoke are in spline housing 8, 8 right-hand members of spline housing and the welding of primary shaft pipe 9, spline housing 8 is equipped with dust cover 7 outward, dust cover 7 and the welding of spline shaft yoke 5, dust cover 7 is iron clad dust cover 7, the right-hand member welding of primary shaft pipe 9 has the universal joint fork, the universal joint fork is connected with the universal joint, the universal joint fork passes through the universal joint and is connected with the flange fork. The balance pieces 1 are welded at the end parts of the first shaft pipe 9 and the second shaft pipe 2.

The supporting assembly 4 comprises two inner supporting rings 10, an outer supporting ring 11, a bearing 12, a sealing ring 13 and a dustproof cover 14, wherein the bearing 12 is clamped between the two inner supporting rings 10, the bearing 12 is sleeved on the spline shaft 3, the inner supporting ring 10 and the bearing 12 are both arranged in the outer supporting ring 11, the outer supporting ring 11 is arranged in the sealing ring 13, the dustproof cover 14 is divided into two blocks which are clamped outside the sealing ring 13, the sealing ring 13 is provided with a special-shaped through hole 15, and the shape of the through hole comprises a strip shape, a triangle shape and other geometric figures.

The specific implementation process is as follows:

when the transmission shaft is installed for use, the supporting assembly 4 in the middle of the second shaft pipe 2 can effectively absorb the vibration of the transmission shaft, reduce the noise, bear the radial load and effectively improve the comprehensive performance of the transmission shaft, the whole structure of the duplex transmission shaft formed by combining the first shaft pipe 9 and the second shaft pipe 2 effectively provides better quasi-constant speed characteristic, is suitable for large-torque, large-angle and high-speed transmission, is more convenient to drive at special road sections such as bumpy road sections, mountain roads, stone roads and the like, and provides more reliable protective performance for the transmission shaft in a vehicle running at the special road sections by the protection of the iron shell dust cover 7, the whole structure is reasonable, the spline shaft fork 6 is used on the first shaft pipe 9 to replace a spline shaft 3 and a sliding fork, the number of parts is reduced, the light weight of the automobile transmission shaft is realized, and the service performance of the automobile transmission shaft is improved, has good popularization value.

The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several variations and modifications can be made, which should also be considered as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the utility of the patent. The scope of the claims of the present invention should be determined by the content of the claims, and the description of the embodiments and the like in the specification should be used to interpret the content of the claims.

Claims

1. The utility model provides an automobile transmission shaft, includes spline shaft yoke and spline housing, spline shaft yoke with spline housing splined connection, its characterized in that: still include first central siphon, the spline housing is connected with first central siphon, the outside cover of spline shaft yoke and spline housing junction is equipped with the dust cover, dust cover and spline shaft yoke fixed connection, the dust cover is the metal material.

2. The automotive propeller shaft according to claim 1, wherein: the other end of the first shaft pipe is fixedly connected with a universal joint fork, and the universal joint fork is connected with a flange fork through a universal joint.

3. The automotive propeller shaft according to claim 2, wherein: the spline shaft fork is connected with the spline sleeve fork through a universal joint, a spline shaft is connected in the spline sleeve fork in a sliding mode, and a supporting assembly is fixedly sleeved on the spline shaft.

4. A propeller shaft for a vehicle according to claim 3, wherein: the other end of the spline shaft is fixedly connected with a second shaft pipe, the other end of the second shaft pipe is fixedly connected with a universal joint fork, and the universal joint fork is connected with a flange fork through a universal joint.

5. The automotive propeller shaft according to claim 4, wherein: the bearing assembly comprises an inner support ring, an outer support ring, a sealing ring, a dust cover and a bearing arranged in the inner support ring, the bearing is sleeved with the spline shaft, the inner support ring is arranged in the outer support ring, the sealing ring is arranged outside the outer support ring, and the dust cover is arranged outside the sealing ring.

6. The automotive propeller shaft of claim 5, wherein: the sealing ring is provided with a special-shaped through hole.

7. The automotive propeller shaft of claim 6, wherein: and the end parts of the first shaft tube and the second shaft tube are both provided with balance pieces.

8. The automotive propeller shaft of claim 7, wherein: the number of the balance pieces is n, wherein n is more than or equal to 1 and less than or equal to 3.

9. The automotive propeller shaft according to claim 8, wherein: and the outer surface of the spline shaft fork is provided with a wear-resistant layer coated by nylon powder.

10. The automotive drive shaft of claim 9, wherein: the thickness of the wear-resistant layer is d, and d is more than or equal to 0.2mm and less than or equal to 0.4 mm.