CN219139646U

CN219139646U - Novel transmission shaft structure with middle fixed ball cage

Info

Publication number: CN219139646U
Application number: CN202223087760.XU
Authority: CN
Inventors: 杨彦起; 朱建琦; 朱国利
Original assignee: Wanxiang Group Corp; Wanxiang Qianchao Transmission Shaft Co Ltd
Current assignee: Wanxiang Group Corp; Wanxiang Qianchao Transmission Shaft Co Ltd
Priority date: 2022-11-17
Filing date: 2022-11-17
Publication date: 2023-06-06
Anticipated expiration: 2032-11-17

Abstract

The utility model discloses a novel transmission shaft structure with a middle fixed ball cage, which mainly comprises a front shaft tube, a spline housing, a middle support, a middle connecting assembly and a rear shaft tube, wherein the middle connecting assembly is sequentially and fixedly connected with a flange shaft fork, a fixed end ball cage and a shaft head, the middle support is sleeved on the outer edge of the spline housing, the left end of the spline housing is fixedly connected with the front shaft tube, and the fixed end ball cage is mutually connected with the rear shaft tube through the shaft head. The beneficial effects of the utility model are as follows: according to the utility model, the power transmission is changed from non-constant speed to constant speed by changing the connection of the cross shaft universal joint into the fixed end ball cage connection, so that the problem that the arrangement angle of the cross shaft universal joint structure is limited is solved, compared with the connection of the cross shaft universal joint, the transmission efficiency is obviously improved, and the ball cage is not easy to wear due to the enlarged arrangement angle range, the durability is more reliable, and the service life is effectively prolonged.

Description

Novel transmission shaft structure with middle fixed ball cage

Technical Field

The utility model relates to the field of transmission shafts, in particular to a novel transmission shaft structure with a middle fixed ball cage.

Background

The transmission shaft is an important part for transmitting power in the transmission system of the automobile, and the transmission shaft and the drive axle together transmit the power of the engine to wheels so that the automobile generates driving force. As shown in fig. 1-2, in the prior art, a transmission shaft is formed by installing a middle bracket 3 on a spline housing 2, matching the spline housing 2 with a spline shaft fork 10 through a spline, and interconnecting the spline shaft fork 10 with a rear shaft tube through a cross shaft universal joint 9. Because the transmission shafts in the prior art are connected by the cross shaft universal joint 9, the arrangement angle on the whole vehicle is smaller, and the arrangement difficulty is higher; and the universal joint has non-constant speed, has lower transmission efficiency and is extremely easy to damage due to abrasion in the use after sale. Therefore, a new connection structure is needed to solve the defects in the prior art, and solve the problems of low transmission efficiency and easy damage in use.

Disclosure of Invention

The utility model solves the defects in the prior art, provides a novel transmission shaft structure with the middle fixed ball cage, changes the connection of the cross shaft universal joint into the connection of the fixed ball cage, changes the power transmission from unequal speed into constant speed, improves the transmission efficiency, solves the problem that the angle arrangement of the cross shaft universal joint is limited, and is not easy to damage.

The technical scheme adopted for solving the technical problems is as follows: the novel transmission shaft structure with the middle fixed ball cage mainly comprises a front shaft tube, a spline housing, a middle support, a middle connecting assembly and a rear shaft tube, wherein the front shaft tube, the spline housing, the middle connecting assembly and the rear shaft tube are sequentially and fixedly connected, and the middle support is sleeved on the outer edge of the spline housing; the middle connecting component is formed by sequentially and fixedly connecting a flange shaft fork, a fixed end ball cage and a shaft head; the left end of the spline housing is fixedly connected with the front axle tube, and the right end of the spline housing is sleeved outside the flange axle fork; the fixed end ball cage is connected with the rear axle tube through the axle head.

Preferably, a housing is mounted on the outside of the fixed end ball cage.

Preferably, the shell comprises a protective shell and a dustproof cover, the end part of the protective shell is bent to form a groove, one end of the dustproof cover is clamped in the groove, and the other end of the dustproof cover is sleeved outside the shaft head.

Preferably, the protective housing is made of a hard material, and the dust cover is made of a soft material.

Preferably, the dust cover is made of rubber.

Preferably, the spline housing and the flange shaft yoke are in spline fit.

Preferably, the flange shaft fork and the fixed end ball cage are fixedly connected through bolts.

Preferably, a protective sleeve is sleeved outside the flange shaft fork.

Preferably, the protective sleeve is a corrugated tube.

The beneficial effects of the utility model are as follows: according to the utility model, the power transmission is changed from non-constant speed to constant speed by changing the connection of the cross shaft universal joint into the fixed end ball cage connection, so that the problem that the arrangement angle of the cross shaft universal joint structure is limited is solved, compared with the connection of the cross shaft universal joint, the transmission efficiency is obviously improved, and the arrangement angle range is enlarged, and the dust cover and the protective sleeve are added, so that the ball cage and the flange shaft fork are not easy to contact with foreign matters to generate abrasion, the durability is more reliable, and the service life is effectively prolonged.

Drawings

Fig. 1 is a schematic diagram 1 of a prior art structure.

Fig. 2 is a schematic diagram of a prior art structure 2.

Fig. 3 is a schematic structural view 1 of the present utility model.

Fig. 4 is a schematic structural view 2 of the present utility model.

FIG. 5 is a schematic view of a fixed end ball cage of the present utility model.

Reference numerals illustrate: front axle tube 1, spline housing 2, intermediate support 3, intermediate connection subassembly 4, back axle tube 5, flange yoke 6, stiff end ball cage 7, spindle nose 8, cross universal joint 9, spline yoke 10, welding fork 11, protective sheath 12, shell 13, protective housing 14, dirt proof boot 15.

Detailed Description

The utility model is further described below with reference to the accompanying drawings:

examples: as shown in fig. 3-5, the novel transmission shaft structure with the middle fixed ball cage is mainly formed by sequentially and fixedly connecting a front shaft tube 1, a spline housing 2, a middle connecting component 4 and a rear shaft tube 5, wherein the middle bracket 3 is sleeved on the outer edge of the spline housing 2, the middle connecting component 4 is formed by sequentially and fixedly connecting a flange shaft fork 6, a fixed end ball cage 7 and a shaft head 8, the left end of the spline housing 2 is fixedly connected with the front shaft tube 1, and the right end of the spline housing 2 is sleeved with the flange shaft fork 6; the spline housing 2 and the flange shaft yoke 6 are in spline fit, the flange shaft yoke 6 and the fixed end ball cage 7 are fixedly connected through bolts, and the fixed end ball cage 7 is connected with the rear shaft tube 5 through a shaft head 8. The outer part of the flange shaft fork 6 is sleeved with a protective sleeve 12, and the protective sleeve 12 is a corrugated pipe and is used for protecting the flange shaft fork from abrasion; the externally mounted of stiff end ball cage 7 have shell 13, shell 13 includes protective housing 14 and dirt proof boot 15, and protective housing 15 tip is buckled and is formed recess 16, protective housing one end joint in recess 16, the other end cup joints in spindle nose 8 outsidely, protective housing 14 adopts the preparation of stereoplasm material, dirt proof boot 15 adopts the preparation of rubber material for prevent that the dust from getting into stiff end ball cage 7. The front axle tube 1 is fixedly connected with the spline housing 2, the axle head 8 and the rear axle tube 5 in a welding mode.

Working principle: the existing transmission shaft industry design standard is that a traditional cross-shaft universal joint 9 is used as a connecting component, the arrangement angle (alpha shown in fig. 2) of the cross-shaft universal joint 9 is not more than 3 degrees, the limitation of the arrangement angle is large, the transmission shaft in the utility model changes the traditional cross-shaft universal joint 9 connection into the fixed end ball cage 7 connection, the arrangement angle of the fixed end ball cage 7 can reach 10 degrees (beta shown in fig. 4), and the conversion direction can be any direction, so that the arrangement angle of the transmission shaft is greatly improved, the arrangement angle of the fixed end ball cage 7 is larger because the arrangement angle of the traditional cross-shaft universal joint 9 is smaller and is easy to cause the problem of abrasion, the outer part of the fixed end ball cage 7 is provided with a shell 13, the shell 13 is composed of a protective shell 14 made of hard materials and a dust cover made of rubber materials, and the protective shell 14 made of hard materials prevents foreign matters from entering the fixed end ball cage 7; the dust cover 15 made of rubber prevents dust from entering the inside of the fixed end ball cage 7 under the condition that the normal movement of the fixed end ball cage 7 is not affected, so that the phenomenon of abrasion or damage is not easy to occur; meanwhile, the cross shaft universal joint 9 can cause stall phenomenon in the power transmission process due to non-constant velocity, the fixed end ball cage 7 has constant velocity, compared with the cross shaft universal joint 9, the fixed end ball cage 7 can realize complete constant velocity transmission due to the structural principle, adverse effects of rotation speed and torque changes on various vibration and impact of associated equipment are restrained, the speed change is small, and the power transmission efficiency is higher.

In addition to the embodiments described above, other embodiments of the utility model are possible. All technical schemes formed by equivalent substitution or equivalent transformation fall within the protection scope of the utility model.

Claims

1. Novel transmission shaft structure of fixed ball cage in middle of area, its characterized in that: the transmission shaft mainly comprises a front shaft tube (1), a spline housing (2), a middle support (3), a middle connecting assembly (4) and a rear shaft tube (5), wherein the front shaft tube (1), the spline housing (2), the middle connecting assembly (4) and the rear shaft tube (5) are sequentially and fixedly connected, and the middle support (3) is sleeved on the outer edge of the spline housing (2); the middle connecting component (4) is formed by sequentially and fixedly connecting a flange shaft fork (6), a fixed end ball cage (7) and a shaft head (8); the left end of the spline housing (2) is fixedly connected with the front shaft tube (1), and the right end of the spline housing (2) is sleeved outside the flange shaft fork (6); the fixed end ball cage (7) is connected with the rear axle tube (5) through the axle head (8).

2. The novel drive shaft structure with a middle fixed type ball cage according to claim 1, wherein: the outer part of the fixed end ball cage (7) is provided with a shell (13).

3. The novel drive shaft structure with the middle fixed type ball cage according to claim 2, wherein: the shell (13) comprises a protective shell (14) and a dustproof sleeve (15), the end part of the protective shell (14) is bent to form a groove (16), one end of the dustproof sleeve (15) is clamped in the groove (16), and the other end of the dustproof sleeve is sleeved outside the shaft head (8).

4. A novel drive shaft structure with a middle fixed ball cage according to claim 3, characterized in that: the protective housing (14) adopts the preparation of stereoplasm material, dirt proof boot (15) adopts soft material preparation.

5. The novel transmission shaft structure with the middle fixed ball cage according to claim 4, wherein: the dust cover (15) is made of rubber.

6. The novel drive shaft structure with a middle fixed type ball cage according to claim 1, wherein: the spline housing (2) is connected with the flange shaft yoke (6) through spline fit.

7. The novel drive shaft structure with a middle fixed type ball cage according to claim 1, wherein: the flange shaft fork (6) and the fixed end ball cage (7) are fixedly connected through bolts.

8. The novel drive shaft structure with a middle fixed type ball cage according to claim 1, wherein: the outer part of the flange shaft fork (6) is sleeved with a protective sleeve (12).

9. The novel drive shaft structure with the middle fixed type ball cage according to claim 8, wherein: the protective sleeve (12) is a corrugated pipe.