CN218172382U

CN218172382U - Steering intermediate shaft structure

Info

Publication number: CN218172382U
Application number: CN202222601701.3U
Authority: CN
Inventors: 周裕; 王吉成; 王瑞; 张大亮; 孙帆
Original assignee: Jilin Shibao Machinery Manufacturing Co ltd
Current assignee: Jilin Shibao Machinery Manufacturing Co ltd
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2022-12-30
Anticipated expiration: 2032-09-30

Abstract

The utility model relates to a novel turn to jackshaft structure. Include first section fork, second section fork, spline pipe, integral key shaft, third section fork and fourth section fork in proper order, integral key shaft and spline pipe pass through the spline connection, the integral key shaft divide into portion of moulding plastics, clamping part and spline portion, spline portion is equipped with the external splines, the clamping part is the cylinder shape, the portion of moulding plastics has the external splines, and the portion of moulding plastics is divided into a plurality of parts by the annular, and the external splines outside of the portion of moulding plastics is equipped with the layer of moulding plastics. Except the fourth section of fork, the rest parts are made of aluminum alloy. The utility model provides a remaining part all has the external splines except that the centre gripping portion in the middle of the integral key shaft is removed, makes integral key shaft torsional strength big like this, and turning moment transmission performance is better.

Description

Steering intermediate shaft structure

Technical Field

The utility model belongs to the technical field of the car a steering system and specifically relates to a novel turn to jackshaft structure.

Background

The steering intermediate shaft is a transmission mechanism for connecting the steering column and the steering gear, and transmits the steering torque of the steering wheel to the steering gear. The steering intermediate shaft comprises a spline pipe and a spline shaft which are connected through a spline, and universal joint structures at two ends, and the spline shaft slides in the spline pipe. Because the spline pipe and the spline shaft are all metal pieces, direct contact has noise, and mutual abrasion influences the accurate transmission of steering torque, so the outer spline of the spline shaft is provided with an injection molding layer.

The steering intermediate shaft in the prior art has the following defects, one end of the spline shaft, which faces the spline pipe, is provided with the external spline, and the other end of the spline shaft is cylindrical. Second, the layer of moulding plastics on the integral key shaft is in the in-process of moulding plastics or is drawn the problem that the layer of moulding plastics drops easily to appear when taking off the experiment, not only need mould plastics again, if the layer adhesive force of moulding plastics is not good moreover, also has the risk that drops when the jackshaft uses at ordinary times, has the potential safety hazard. Thirdly, the steel intermediate shaft has heavy weight and needs to be subjected to anti-corrosion treatment.

Disclosure of Invention

The utility model aims at providing a turn to jackshaft structure, the integral key shaft torsional strength who turns to the jackshaft is big, and the layer of moulding plastics is difficult for droing.

The technical scheme of the utility model:

the utility model provides a turn to jackshaft structure includes first section fork, second section fork, spline pipe, integral key shaft, third section fork and fourth section fork in proper order, integral key shaft and spline pipe pass through the spline connection, the integral key shaft divide into portion of moulding plastics, clamping part and spline portion, spline portion is equipped with external splines, the clamping part is the cylinder shape, the portion of moulding plastics has external splines, and the portion of moulding plastics is divided into a plurality of parts by the annular, and the external splines outside of the portion of moulding plastics is equipped with the layer of moulding plastics.

The utility model has the advantages that:

1. the utility model provides a remaining part all has the external splines except that the centre gripping portion in the middle of the integral key shaft is removed, makes integral key shaft torsional strength big like this, and turning moment transmission performance is better.

2. This application is served and is equipped with a plurality of annulars towards spline pipe on the integral key shaft for the layer of moulding plastics more laminates with the integral key shaft, is difficult for droing. The injection molding machine is safer in the injection molding process, the intermediate shaft pull-off experiment and the subsequent using process.

3. This application integral key shaft, spline pipe and part festival fork all adopt aluminum alloy material, are guaranteeing under the condition of performance, and whole weight is decline by a wide margin, need not to do surface treatment in addition and also can satisfy anticorrosive requirement. The method has great competitive advantages for new energy automobiles and products with strict requirements on the weight of the vehicles.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of the steering intermediate shaft of the present application.

FIG. 2 is a schematic view of a split structure of the steering intermediate shaft of the present application.

FIG. 3 is an enlarged view of the spline shaft structure of the steering intermediate shaft of the present application.

Reference numerals are as follows:

1. a first yoke; 2. a second yoke; 3. a spline tube; 4. a spline shaft; 5. a third section fork; 6. a fourth section fork; 7. A cross shaft; 8. a dust cover; 9. clamping a hoop; 10. a universal joint; 41. an injection molding part; 42. a clamping part; 43. a spline section; 44. a ring groove; 45. injection molding the layer; 46. a limiting groove; 47. bolt holes; 48. and (4) bolts.

Detailed Description

In order to solve the problems in the prior art, the invention provides the steering intermediate shaft with the novel structure, so that the torsional strength of the spline shaft is improved, and an injection molding layer is prevented from falling off. Most parts of the intermediate shaft are made of aluminum alloy, so that the overall weight of the product is greatly reduced under the condition of ensuring the service performance, and the intermediate shaft has competitive advantages in the future.

The present application will now be described in detail with reference to the accompanying drawings:

as shown in fig. 1-2, a steering intermediate shaft structure comprises a first yoke 1, a second yoke 2, a spline tube 3, a spline shaft 4, a third yoke 5 and a fourth yoke 6 in sequence, wherein the spline shaft 4 and the spline tube 3 are connected through a spline. The first yoke 1 is connected with a steering column, and the fourth yoke 6 is connected with a steering gear. The first section fork 1 and the second section fork 2 form a universal joint 10 through a cross shaft, the second section fork 2 and the spline pipe 3 are of an integral structure, and the other end of the spline pipe 3 is connected with one end of the spline shaft 4 through a sliding spline. The other end of the spline shaft is connected with a third section fork, and a universal joint 10 is formed by the third section fork 5 and a fourth section fork 6 through a cross shaft 7. Spline pipe 3 is equipped with shield 8 towards 4 one ends of integral key shaft, is equipped with clamp 9 on shield 8.

As shown in fig. 3, the spline shaft 4 is divided into an injection molding part 41, a clamping part 42 and a spline part 43, the spline part 43 is provided with an external spline, the clamping part 42 is cylindrical, the injection molding part 41 is provided with an external spline, the injection molding part 41 is provided with more than one ring groove 44, the ring groove 44 divides the injection molding part 41 into a plurality of parts, and an injection molding layer 45 is injected outside the injection molding part 41 external spline and the ring groove 44. The third yoke 5 is provided with an internal spline, the third yoke 5 is in spline connection with the spline part 43 of the spline shaft 4, the end part of the spline part 43 of the spline shaft 4 is provided with a transverse limiting groove 46, the third yoke 5 is provided with a transverse bolt hole 47, and a bolt 48 penetrates through the bolt hole 47 and the limiting groove 46 to limit and fix the spline shaft.

The utility model provides a spline shaft 4 except the centre gripping portion in the middle of, other parts all have external splines, improve the torsional strength of spline shaft. In order to facilitate injection molding, a clamping part for clamping the injection mold clamping jaw is reserved in the middle of the spline shaft.

In the prior art, the injection molding part of the spline shaft is of an integral external spline structure, and in the injection molding process, the injection molding pressure ratio is large, the temperature is high, and the demolding is not easy to happen, so that the injection molding is unsuccessful. Or in the pull-off experiment, the injection molding layer falls off, and the pull-off prevention effect is poor. This application is a plurality of parts through the annular with the part of moulding plastics of integral key shaft, and easy drawing of patterns when moulding plastics can prevent to mould plastics the layer and drop when drawing and take off the experiment, and factor of safety is high during the use.

Spline pipe 3, spline shaft 4, first festival fork 1, second festival fork 2, third festival fork 5 are the aluminum alloy material, and fourth festival fork 6 is the steel material. The spline tube, the spline shaft, the first section fork, the second section fork and the third section fork are made of aluminum alloy materials, so that the overall weight of the steering intermediate shaft is greatly reduced. The fourth section of fork is connected with the steering gear, adopts steel material, can be better with the steering gear cooperation, and wearing and tearing are little.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the embodiments of the present invention, and not for limiting the same. Although embodiments of the present invention have been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.

Claims

1. The utility model provides a turn to jackshaft structure includes first section fork, second section fork, spline pipe, integral key shaft, third section fork and fourth section fork in proper order, integral key shaft and spline pipe pass through the spline connection, its characterized in that: the integral key shaft divide into portion of moulding plastics, clamping part and spline portion, spline portion is equipped with external splines, the clamping part is the cylinder shape, the portion of moulding plastics has external splines, and the portion of moulding plastics is divided into a plurality of parts by the annular, and the external splines outside of the portion of moulding plastics is equipped with the layer of moulding plastics.

2. A steering intermediate shaft structure according to claim 1, wherein: the third section fork is provided with an internal spline and is in splined connection with the spline part of the spline shaft, the spline part of the spline shaft is provided with a transverse limiting groove, a transverse bolt hole is drilled in the third section fork, and a bolt penetrates through the bolt hole and the limiting groove to limit and fix the spline shaft.

3. A steering intermediate shaft structure according to claim 1, wherein: the spline tube, the spline shaft, the first section fork, the second section fork and the third section fork are made of aluminum alloy materials, and the fourth section fork is made of steel materials.