CN216241785U

CN216241785U - Automobile transmission spline shaft

Info

Publication number: CN216241785U
Application number: CN202122830545.3U
Authority: CN
Inventors: 朱惠明; 江桂英
Original assignee: Wenling Benlong Machinery Co ltd
Current assignee: Wenling Benlong Machinery Co ltd
Priority date: 2021-11-18
Filing date: 2021-11-18
Publication date: 2022-04-08
Anticipated expiration: 2031-11-18

Abstract

The utility model discloses an automobile transmission spline shaft which comprises a first shaft part, a second shaft part and a connecting part, wherein a plurality of spline teeth distributed annularly are fixedly arranged on the outer surface of the second shaft part, an assembly cavity is formed in one end of the second shaft part, a positioning long rod is fixedly arranged at the bottom of an inner cavity of the assembly cavity, a plurality of mounting connecting grooves distributed annularly are formed in the inner wall of the assembly cavity, a plurality of protrusion limiting blocks are fixedly arranged at the other end of the first shaft part, the protrusion limiting blocks are connected with the corresponding mounting connecting grooves in a matched mode, and a positioning matching hole is formed in the middle of the other end of the first shaft part. According to the utility model, the first shaft part and the second shaft part can be conveniently replaced through disassembly and assembly by arranging the bump limiting blocks, the assembly cavity, the mounting connecting grooves, the positioning long rod, the thin-layer rubber sleeve and the positioning matching holes, the requirement limit of casting is reduced, the first shaft part and the second shaft part can be manufactured by adopting different strength materials, and the structural strength and the wear resistance of necessary positions are fully ensured.

Description

Automobile transmission spline shaft

Technical Field

The utility model belongs to the technical field of automobile accessories, and particularly relates to an automobile transmission spline shaft.

Background

The spline shaft is a mechanical transmission type, has the same functions as a flat key, a semicircular key and a wedge key, and is used for transmitting mechanical torque, a longitudinal key groove is formed in the outer surface of the shaft, and a rotating part sleeved on the shaft is also provided with a corresponding key groove which can keep rotating synchronously with the shaft. While rotating, some of them can slide on the shaft longitudinally, such as the gear shifting gear of the gear box.

In the field of automobiles, the application of the transmission spline shaft is very wide, but the existing transmission spline shaft has some defects, for example, the existing transmission spline shaft is mostly integrally cast and then is mechanically processed, so that the method has higher connection strength, but when the spline shaft is damaged, corresponding parts cannot be replaced, integral waste is caused, and the integral casting needs a large-scale casting die, so that the investment cost is high, and the use is inconvenient.

Disclosure of Invention

The utility model aims to provide an automobile transmission spline shaft to solve the problems in the background technology.

The purpose of the utility model can be realized by the following technical scheme: the utility model provides an automobile transmission integral key shaft, includes first axial region, second axial region and connecting portion, the one end and the connecting portion welded connection of first axial region, the fixed spline tooth that is equipped with a plurality of annular distributions of surface of second axial region, the assembly chamber has been seted up to the one end of second axial region, the fixed location stock that is equipped with in bottom of assembly intracavity chamber, the installation spread groove that a plurality of annular distributions were seted up to the inner wall department in assembly chamber, the other end of first axial region is fixed and is equipped with a plurality of protruding stoppers, protruding stopper is connected with the installation spread groove cooperation that corresponds, the location matching hole has been seted up at the middle part of the first axial region other end, the location matching hole is connected with the location stock cooperation, annular oil storage tank has been seted up to the surface department of second axial region one end.

In the automobile transmission spline shaft, a thin-layer rubber sleeve is fixedly connected inside the assembling cavity, and the thickness of the thin-layer rubber sleeve is less than 0.35 mm.

In the automobile transmission spline shaft, one end of the second shaft part is fixedly connected with a cushion rubber pad.

In the automobile transmission spline shaft, the surface of the connecting part is provided with a positioning connecting hole, and the inside of the positioning connecting hole is embedded with an anti-abrasion ring.

In the automobile transmission spline shaft, the bottom of the annular oil storage tank is communicated with a branch oil way, and the branch oil way is communicated with the spline teeth.

In the automobile transmission spline shaft, the matching precision error of the protrusion limiting block and the installation connecting groove and the matching precision error of the positioning matching hole and the long positioning rod are both less than five thousandths.

Compared with the prior art, the utility model has the beneficial effects that:

1. this car transmission integral key shaft is through protruding stopper, assembly chamber, installation spread groove, location stock, thin layer rubber sleeve and the location mating holes that is equipped with for first axial region and second axial region can be through dismantling the equipment, and convenient the change reduces cast requirement restriction simultaneously, can adopt different strength material to make, fully ensures the structural strength and the wear resistance of necessary position.

2. This car transmission integral key shaft has good lubricated effect of oil storage through buffer rubber pad, annular oil storage tank and the switch oil circuit that is equipped with, opens and shuts at driven in-process buffer rubber pad and produces the atmospheric pressure change for the lubricating oil of annular oil storage tank storage flows into the switch oil circuit, flows the spline tooth through the switch oil circuit, guarantees the lubricity of spline tooth, improves wear-resisting and radiating effect.

Drawings

FIG. 1 is a schematic structural view of the transmission spline shaft of the automobile.

FIG. 2 is a schematic view of the unfolded structure of the transmission spline shaft of the automobile.

FIG. 3 is a schematic view of the internal structure of the first shaft portion and the second shaft portion of the present automotive drive spline shaft.

FIG. 4 is a schematic plan view of the second shaft portion of the automobile transmission spline shaft.

In the figure, 1, a first shaft portion; 2. a second shaft portion; 3. a connecting portion; 4. positioning the connecting hole; 5. an anti-abrasion ring; 6. spline teeth; 7. a protruding limit block; 8. a cushion rubber pad; 9. an assembly chamber; 10. mounting a connecting groove; 11. positioning a long rod; 12. a thin layer rubber sleeve; 13. positioning the matching hole; 14. an annular oil storage tank; 15. a branch oil path.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1, fig. 2, fig. 3 and fig. 4 show, this automotive transmission integral key shaft includes first axial region 1, second axial region 2 and connecting portion 3, the one end and the 3 welded connection of connecting portion of first axial region 1, the external fixed surface of second axial region 2 is equipped with spline tooth 6 that a plurality of annular distribute, assembly chamber 9 has been seted up to the one end of second axial region 2, the fixed location stock 11 that is equipped with in bottom of assembly chamber 9 inner chamber, the installation spread groove 10 that a plurality of annular distribute has been seted up to the inner wall department of assembly chamber 9, the other end of first axial region 1 is fixed and is equipped with a plurality of protruding stoppers 7, protruding stopper 7 is connected with the installation spread groove 10 cooperation that corresponds, location mating holes 13 has been seted up at the middle part of the 1 other end of first axial region, location mating holes 13 is connected with the cooperation of location stock 11, annular oil storage tank 14 has been seted up to the surface department of 2 one end of second axial region.

In a further elaboration, the inside fixedly connected with thin-layer rubber sleeve 12 of assembly chamber 9, the thickness of thin-layer rubber sleeve 12 is less than 0.35 millimeter, improve the joint strength of assembly chamber 9 and primary shaft portion 1, the one end fixedly connected with cushion rubber pad 8 of secondary shaft portion 2, annular oil storage tank 14's bottom intercommunication has fork oil circuit 15, fork oil circuit 15 and spline tooth 6 intercommunication, location connecting hole 4 has been seted up on the surface of connecting portion 3, location connecting hole 4's inside is inlayed and is established and install wear ring 5, make things convenient for the location to connect, prevent that location connecting hole 4 from taking place the fracture, protruding stopper 7 all is less than five per thousand with installation connecting groove 10 cooperation precision error and location mating hole 13 and location stock 11 cooperation precision error, guarantee the assembly precision, and the use effect is improved.

According to the automobile transmission spline shaft, the assembly cavity 9 corresponds to the first shaft part 1, so that the protrusion limiting blocks 7 are in fit connection with the corresponding installation connecting grooves 10, the positioning matching holes 13 are in fit connection with the positioning long rods 11, the spline shaft body is completely assembled, and the transmission shaft is connected through the positioning connecting holes 4, so that the first shaft part 1 and the second shaft part 2 can be disassembled and assembled, the replacement is convenient, the requirement limit of casting is reduced, the spline shaft can be made of materials with different strength, and the structural strength and the wear resistance of necessary positions are fully guaranteed; when the lubricating oil supplying device is used, the buffer rubber pads 8 are opened and closed to generate air pressure change, so that lubricating oil stored in the annular oil storage tank 14 flows into the turnout oil way 15 and flows to the spline teeth 6 through the turnout oil way 15, the lubricating property of the spline teeth 6 is ensured, and the wear resistance and the heat dissipation effect are improved.

Those not described in detail in this specification are within the skill of the art. The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Claims

1. The automobile transmission spline shaft comprises a first shaft part (1), a second shaft part (2) and a connecting part (3), and is characterized in that one end of the first shaft part (1) is connected with the connecting part (3) in a welding manner, a plurality of spline teeth (6) distributed in an annular manner are fixedly arranged on the outer surface of the second shaft part (2), an assembly cavity (9) is formed in one end of the second shaft part (2), a long positioning rod (11) is fixedly arranged at the bottom of an inner cavity of the assembly cavity (9), a plurality of installation connecting grooves (10) distributed in an annular manner are formed in the inner wall of the assembly cavity (9), a plurality of protruding limit blocks (7) are fixedly arranged at the other end of the first shaft part (1), the protruding limit blocks (7) are connected with the corresponding installation connecting grooves (10) in a matching manner, and a positioning matching hole (13) is formed in the middle of the other end of the first shaft part (1), the positioning matching hole (13) is connected with the positioning long rod (11) in a matching mode, and an annular oil storage groove (14) is formed in the surface of one end of the second shaft part (2).

2. The automotive transmission spline shaft of claim 1, wherein: the thin-layer rubber sleeve (12) is fixedly connected to the inner portion of the assembling cavity (9), and the thickness of the thin-layer rubber sleeve (12) is smaller than 0.35 mm.

3. The automotive transmission spline shaft of claim 1, wherein: one end of the second shaft part (2) is fixedly connected with a cushion rubber pad (8).

4. The automotive transmission spline shaft of claim 1, wherein: the surface of the connecting part (3) is provided with a positioning connecting hole (4), and the inside of the positioning connecting hole (4) is embedded with an anti-abrasion ring (5).

5. The automotive transmission spline shaft of claim 1, wherein: the bottom of the annular oil storage tank (14) is communicated with a branch oil way (15), and the branch oil way (15) is communicated with the spline teeth (6).

6. The automotive transmission spline shaft of claim 1, wherein: the matching precision error of the protrusion limiting block (7) and the installation connecting groove (10) and the matching precision error of the positioning matching hole (13) and the long positioning rod (11) are less than five thousandths.