CN219007922U

CN219007922U - Steering shaft assembly, steering device and vehicle

Info

Publication number: CN219007922U
Application number: CN202223073111.4U
Authority: CN
Inventors: 谭建; 张�杰; 朱雷; 覃海营
Original assignee: SAIC GM Wuling Automobile Co Ltd
Current assignee: SAIC GM Wuling Automobile Co Ltd
Priority date: 2022-11-18
Filing date: 2022-11-18
Publication date: 2023-05-12
Anticipated expiration: 2032-11-18

Abstract

The application discloses steering spindle subassembly, steering device and vehicle, this steering spindle subassembly is including steering jackshaft, universal joint fork and bolt, the universal joint fork is connected in steering jackshaft, and the universal joint fork includes connecting hole, breach, locking hole and first surface, connecting hole, breach and locking hole communicate each other, the connecting hole is used for connecting steering gear or steering column, bolted connection is in the locking hole for locking steering gear or steering column, and the bolt has the second surface, second surface and first surface in close contact with, wherein, at least one of first surface, second surface is equipped with the arch. This application is equipped with the arch through at least one in first surface, second surface for steering intermediate shaft is more firm through being connected of universal joint fork with steering column, steering gear, thereby can not take place the bolt loose during whole use, and the bolt moment of torsion can not decay, and then has solved common car and has turned to abnormal sound problem.

Description

Steering shaft assembly, steering device and vehicle

Technical Field

The application relates to the technical field of automobile parts, in particular to a steering shaft assembly, a steering device comprising the steering shaft assembly and a vehicle.

Background

An automobile generally comprises a steering intermediate shaft, a steering column and a steering device, wherein two ends of the steering intermediate shaft are respectively connected with a connecting part of the steering column and the steering device through universal joint forks. For ease of assembly, openings are designed in the yoke of the steering intermediate shaft, and the internal spline of the yoke of the steering intermediate shaft is much larger than the external spline parameters on the connection of the steering gear or the connection of the steering column. Therefore, in order to fasten the connection, after the assembly, the bolts need to pass through the screw holes at the opening of the steering intermediate shaft and tighten to achieve the purpose of clamping the opening of the universal joint fork, and simultaneously, the spline of the universal joint fork of the steering intermediate shaft is tightly connected with the spline on the connecting part of the steering gear or the connecting part of the steering column.

However, the connection method of the steering intermediate shaft and the steering column and the steering gear has the following problems:

the existing structure is easy to generate abnormal sound when the automobile turns to work. The reason is that: the connecting bolts of the universal joint fork at the two ends of the steering intermediate shaft are all bolt heads with flange faces of smooth plane structures, and the matched universal joint fork mounting faces are also smooth planes. After the bolt is tightened, the condition that the smooth plane of the bolt head and the mounting surface of the universal joint fork rotate relatively can occur. Because smooth plane matches, after the car uses for a long time, here bolt face is liable to slip, produces the moment of torsion decay, then produces and turns to abnormal sound.

Disclosure of Invention

In order to overcome the problems in the prior art, the main object of the present application is to provide a steering shaft assembly which is not easy to slip, is not easy to generate torque attenuation and is not easy to generate steering abnormal sound after being assembled.

In order to achieve the above purpose, the present application specifically adopts the following technical scheme:

the application provides a steering shaft assembly, is applied to the car, the car includes steering gear and steering column, the steering shaft assembly includes:

a steering intermediate shaft;

the universal joint fork is connected to the steering intermediate shaft and comprises a connecting hole, a notch, a locking hole and a first surface, wherein the connecting hole, the notch and the locking hole are communicated with each other, and the connecting hole is used for connecting the steering gear or the steering column;

the bolt is connected to the locking hole and used for locking the steering gear or the steering column, the bolt is provided with a second surface, the second surface is in close contact with the first surface, and at least one of the first surface and the second surface is provided with a protrusion.

In some embodiments, the protrusions are provided in a plurality, and the protrusions are distributed on the second surface at intervals.

In some embodiments, each of the protrusions is distributed on the second surface around the axial direction of the bolt, and each of the protrusions extends in the radial direction of the bolt.

In some embodiments, the protrusions are uniformly spaced radially about the axis of the bolt.

In some embodiments, the protrusions are of uniform height.

In some embodiments, the protrusions are provided in a plurality, and the protrusions are distributed on the first surface at intervals.

In some embodiments, the protrusions are evenly spaced radially about the axis of the locking aperture.

In some embodiments, the bolt includes a head portion and a connecting portion, the connecting portion is connected to the head portion, the second surface is disposed on the head portion, and an outer surface of the connecting portion is coated with a locking glue layer.

Correspondingly, the application also provides a steering device, which comprises a steering column, a steering gear and the steering shaft assembly, wherein the steering shaft assembly is respectively connected with the steering gear and the steering column.

The application also provides a vehicle, which comprises a vehicle body and the steering device, wherein the steering device is mounted on the vehicle body.

The utility model provides a steering spindle subassembly is applied to the car, and the car includes steering gear and steering column, and this steering spindle subassembly includes steering jackshaft, universal joint fork and bolt, the universal joint fork connect in steering jackshaft, just the universal joint fork includes connecting hole, breach, locking hole and first surface, the connecting hole the breach with locking hole communicates each other, the connecting hole is used for connecting the steering gear or steering column, bolted connection in locking hole is used for locking the steering gear or steering column, just the bolt has the second surface, the second surface with first surface in close contact with, wherein, at least one of them is equipped with the arch. This application is through first surface at least one in the second surface is equipped with the arch for steering intermediate shaft is more firm through the connection of universal joint fork with steering column, steering gear, thereby can not take place the bolt loose during whole use, and the bolt moment of torsion can not decay, and then has solved common car and has turned to abnormal sound problem.

Drawings

Fig. 1 is a schematic diagram of an axial structure of a bolt according to the prior art in an embodiment of the present application.

Fig. 2 is a schematic view of a prior art yoke according to an embodiment of the present application.

Fig. 3 is a schematic structural diagram of a steering device according to an embodiment of the present application.

Fig. 4 is a partial enlarged view at a in fig. 3.

Fig. 5 is a schematic structural diagram of a universal joint fork according to an embodiment of the present application.

Fig. 6 is a schematic diagram of an axial structure of a bolt according to an embodiment of the present application.

Fig. 7 is a schematic view of another view structure of a bolt according to an embodiment of the present application.

Fig. 8 is a schematic front view of a bolt according to an embodiment of the present application.

Reference numerals:

1. a universal joint fork; 11. a connection hole; 12. a notch; 13. a locking hole; 14. a first surface; 2. a steering intermediate shaft; 3. a bolt; 31. a head; 311. a second surface; 32. a connection part; 33. a protrusion; 4. a steering column; 5. a diverter; 3', a bolt; 31', flange faces; 1', universal joint fork; 14', mounting surface.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

In the description of the present application, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance unless explicitly specified or limited otherwise; the term "plurality" means two or more, and the term "plurality" means two or more, unless specified or indicated otherwise; the terms "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In the description of the present application, it should be understood that the terms "upper," "lower," and the like in the embodiments of the present application are described in terms of angles shown in the accompanying drawings, and should not be construed as limiting the embodiments of the present application. In the context of this document, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on the other element or be indirectly on the other element through intervening elements.

Referring to fig. 1 and 2, fig. 1 is a schematic diagram of a bolt shaft structure according to the prior art provided in the embodiment of the present application, and fig. 2 is a schematic diagram of a yoke structure according to the prior art provided in the embodiment of the present application. In the prior art, the connecting bolts 3' of the universal joint fork 1' are all bolt heads with flange faces 31' of smooth plane structures, and the mounting faces 14' matched with the universal joint fork 1' are also smooth planes. After tightening the bolt 3', it may happen that the flange face 31' of the bolt head rotates relative to the mounting face 14 'of the yoke 1'. Because of smooth plane matching, after the vehicle is used for a long time, the flange surface 31 'of the bolt 3' is easy to slide, torque attenuation is generated, and steering abnormal sound is generated.

An automobile generally includes a steering device, wheels, and a steering wheel, which is connected to the wheels through the steering device. When the direction of the automobile is regulated, the steering wheel is rotated, so that the steering device drives the wheels to rotate, and the aim of regulating the direction of the automobile is fulfilled.

Referring to fig. 3 to 6, fig. 3 is a schematic structural diagram of a steering device provided in an embodiment of the present application, fig. 4 is a partial enlarged view of a portion a in fig. 3, fig. 5 is a schematic structural diagram of a universal joint fork provided in an embodiment of the present application, and fig. 6 is a schematic structural diagram of a bolt shaft provided in an embodiment of the present application. The steering device includes a steering gear 5, a steering column 4, and a steering shaft assembly including a steering intermediate shaft 2, a yoke 1, and a bolt 3. When assembled, the universal joint fork 1 is connected to the steering intermediate shaft 2, and the universal joint fork 1 comprises a connecting hole 11, a notch 12, a locking hole 13 and a first surface 14, wherein the connecting hole 11, the notch 12 and the locking hole 13 are mutually communicated, the connecting hole 11 is used for connecting a steering device 5 or a steering column 4, the bolt 3 is connected to the locking hole 13 and used for locking the steering device 5 or the steering column 4, the bolt 3 is provided with a second surface 311, the second surface 311 is in close contact with the first surface 14, at least one of the first surface 14 and the second surface 311 is provided with a protrusion 33, the steering column 4 is used for connecting an automobile steering wheel, and two ends of the steering device 5 are used for connecting automobile wheels. In the process of steering of the automobile, when a driver rotates a steering wheel, the steering column 4 rotates along with the steering wheel, steering torque is transmitted to a connecting part of the rack-and-pinion steering gear 5 through the universal joint fork 1 and the steering intermediate shaft 2, and the rack-and-pinion steering gear 5 converts the steering torque of the connecting part into reciprocating motion or linear motion, so that wheels of the automobile deflect by a certain angle, and further steering of the automobile is completed.

This application is equipped with protruding 33 through at least one in first surface 14, second surface 311 for steering intermediate shaft 2's universal joint fork 1 and steering column 4, steering gear 5's connection is more firm, thereby can not take place bolt 3 not hard up during whole use, and bolt 3 moment of torsion can not decay, and then has solved common car and has turned to abnormal sound problem.

In the present embodiment, the joint structure of the yoke 1 and the bolt 3 of the present embodiment can be used at the joint of the steering intermediate shaft 2 and the steering column 4, and at the joint of the steering intermediate shaft 2 and the steering gear 5. In other embodiments, the connection structure of the yoke 1 and the bolt 3 of the present embodiment may be used only for the connection of the steering intermediate shaft 2 and the steering column 4 or the connection of the steering intermediate shaft 2 and the steering gear 5.

Referring to fig. 4 to 5, for ease of assembly, an internal spline is provided on the inner wall of the connecting hole 11 of the yoke 1, and an external spline is provided on the connecting portion of the steering column 4 and the connecting portion of the steering 5, that is, the connecting portion of the steering column 4 and the connecting portion of the steering 5 are spline shafts, and the internal spline of the yoke 1 is considerably larger than the external spline parameters on the connecting portion of the steering 5 or the connecting portion of the steering column 4. Therefore, in order to fasten the connection, after the assembly, the bolt 3 needs to be passed through the locking hole 13 at the opening of the steering intermediate shaft 2 and tightened to achieve the purpose of clamping the notch 12 of the yoke 1, and at the same time, the spline of the yoke 1 of the steering intermediate shaft 2 is tightly connected with the spline on the connecting portion of the steering gear 5 or the connecting portion of the steering column 4.

In the embodiment, the spline is obtained by adopting the process modes of injection molding and nylon coating instead of plastic powder coating and heating the spline shaft, so that the qualification rate of the surface size of the finished nylon spline is improved. Simultaneously, this application still adopts the mode of riveting the integral key shaft to lock the spline junction, prevents that the universal joint fork 1 of steering jackshaft 2 from breaking away from with the connecting portion of steering column 4, steering gear 5, simple structure, the part is with low costs. In the embodiment, the anti-drop process mode of riveting the embossed key shaft is adopted in the process mode of injection molding and nylon coating, so that the process is simplified, and the production efficiency is improved.

Referring to fig. 6 to 8, fig. 7 is another view angle structural schematic diagram of a bolt provided in an embodiment of the present application, and fig. 8 is a front view structural schematic diagram of a bolt provided in an embodiment of the present application. The protrusions 33 are provided in plurality, the protrusions 33 are uniformly distributed on the second surface 311 at radial intervals around the axis of the bolt 3, each protrusion 33 extends along the radial direction of the bolt 3, and the heights of the protrusions 33 are uniform. Due to the existence of the structure of the protrusion 33, when the bolt 3 is tightened, the protrusion 33 is partially embedded into the universal joint fork 1 in a microscopic manner, which is equivalent to that the roughness and the friction coefficient of the second surface 311 of the bolt 3 and the first surface 14 of the universal joint fork 1 are improved, torque is effectively utilized, and the tightening force of the bolt 3 is improved.

In some embodiments, the plurality of protrusions 33 may be uniformly distributed on the first surface 14 at radial intervals around the axis of the locking hole 13, and the plurality of protrusions 33 may be simultaneously distributed on the first surface 14 and the second surface 311, as shown in fig. 5.

In some embodiments, a plurality of recesses may be disposed on the second surface 311 at radial intervals around the axis of the bolt 3, may be disposed on the first surface 14 at radial intervals around the axis of the locking hole 13, and may be disposed on both the first surface 14 and the second surface 311.

With continued reference to fig. 6, the bolt 3 further includes a head 31 and a connecting portion 32, the connecting portion 32 is connected to the head 31, the second surface 311 is disposed on the head 31, and the outer surface of the connecting portion 32 is coated with an anti-loosening adhesive layer. The anti-loosening glue can increase the sealing capacity of the mechanical connecting assembly and play a role in preventing the loosening of the fastener, and the protrusion 33 of the second surface 311 of the bolt 3 is matched with the anti-loosening glue on the outer surface of the connecting part 32 of the bolt 3 to be used together, so that the loosening of the bolt 3 and torque attenuation can be well prevented, and further the occurrence of abnormal steering noise is reduced.

Correspondingly, the embodiment also discloses a steering device which comprises a steering column 4, a steering intermediate shaft 2, a steering device 5 and the steering shaft assembly of any embodiment, wherein the steering shaft assembly is respectively connected with the steering device 5 and the steering column 4.

Correspondingly, the embodiment also discloses a vehicle, which comprises a vehicle body and a steering device, wherein the steering device is arranged on the vehicle body.

The foregoing is merely a preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the technical scope of the present application should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A steering shaft assembly for use in an automobile, the automobile comprising a steering gear and a steering column, the steering shaft assembly comprising:

a steering intermediate shaft;

2. The steering shaft assembly as in claim 1, wherein a plurality of said protrusions are provided, a plurality of said protrusions being spaced apart from said second surface.

3. The steering shaft assembly as in claim 2, wherein each of the protrusions is distributed on the second surface around an axial direction of the bolt, and each of the protrusions extends in a radial direction of the bolt.

4. A steering shaft assembly according to claim 3, wherein each of said projections is uniformly spaced radially about the axis of said bolt.

5. The steering shaft assembly as in claim 1, wherein each of said lobes is of uniform height.

6. The steering shaft assembly as in claim 1, wherein a plurality of said protrusions are provided, a plurality of said protrusions being spaced apart from said first surface.

7. The steering shaft assembly of claim 6, wherein the protrusions are evenly spaced radially about the axis of the locking aperture.

8. The steering shaft assembly as in any one of claims 1-7, wherein the bolt includes a head portion and a connecting portion, the connecting portion is connected to the head portion, the second surface is disposed on the head portion, and an outer surface of the connecting portion is coated with a layer of anti-loosening adhesive.

9. A steering apparatus comprising a steering column, a steering gear and a steering shaft assembly according to any one of claims 1 to 8, said steering shaft assembly being connected to said steering gear and said steering column respectively.

10. A vehicle comprising a vehicle body and the steering device according to claim 9, the steering device being mounted to the vehicle body.