CN217804894U

CN217804894U - Adjustable pre-tightening mechanism of steering column

Info

Publication number: CN217804894U
Application number: CN202221969044.1U
Authority: CN
Inventors: 周裕; 李婷; 欧阳柳; 曹万霖
Original assignee: Jilin Shibao Machinery Manufacturing Co ltd
Current assignee: Jilin Shibao Machinery Manufacturing Co ltd
Priority date: 2022-07-28
Filing date: 2022-07-28
Publication date: 2022-11-15
Anticipated expiration: 2032-07-28

Abstract

The utility model relates to an adjustable pretension mechanism of steering column. Including the support sleeve and the pretension subassembly of steering column, open threaded hole on the support sleeve, the pretension subassembly is arranged in threaded hole, it has fore-and-aft spacing groove to open on the screw hole lateral wall, the pretension subassembly is by outer end plug, elastomeric element, compact heap of including in proper order to interior, the end plug has the external screw thread, with the screw hole cooperation, open porosely in the compact heap middle part, be the arc with one side of the inner tube post contact of steering column, the non-open-ended part of arcwall face is equipped with a plurality of bosss, is equipped with the spacing ring in compact heap and elastomeric element contact one side periphery, and elastomeric element arranges spacing intra-annular in, and the compact heap side is equipped with spacing arch, spacing arch is arranged in the spacing groove. The pretension assembly of this application pretension mechanism comprises end plug, elastomeric element, compact heap, places support sleeve's pretension assembly inslot, can rotate the end plug as required, and then adjusts the pretightning force, can dismantle.

Description

Adjustable pre-tightening mechanism of steering column

Technical Field

The utility model belongs to the technical field of the vehicle a vehicle steering system and specifically relates to an adjustable pretension mechanism of steering column.

Background

The steering column is an important component in a vehicle steering system, and in order to improve driving comfort, the length of the steering column can be adjusted to adapt to drivers with different body types. In order to adjust the length of the steering column, a gap is left between the inner tubular column and the support sleeve, and the gap can influence the natural frequency and the rigidity of the tubular column, cause the steering wheel to loose and shake in the driving process and influence the driving comfort and the safety. In the prior art, a fixed pressing block is often adopted for pre-tightening, but the pressing block is not easy to detach, and the pre-tightening force cannot be adjusted.

Disclosure of Invention

The utility model aims at providing an adjustable pretension mechanism of steering column solves among the prior art pretension mechanism difficult dismantlement, problem that the pretightning force can not be adjusted.

The technical scheme of the utility model:

the utility model provides an adjustable pretension mechanism of steering column includes the support sleeve and the pretension subassembly of steering column, open threaded hole on the support sleeve, pretension subassembly is arranged in the threaded hole, it has fore-and-aft spacing groove to open on the screw hole lateral wall, the pretension subassembly is by outer end plug, elastomeric element, compact heap of including in proper order to interior, the end plug has the external screw thread, cooperates with the screw hole, open porosely in the middle part of the compact heap, is the arc with one side of the interior tubular column contact of steering column, and the arcwall face is not open-ended part and is equipped with a plurality of bosss, is equipped with the spacing ring in compact heap and elastomeric element contact one side periphery, and elastomeric element arranges spacing intra-annularly in, and the compact heap side is equipped with spacing arch, spacing arch is arranged in the spacing inslot.

The utility model has the advantages that:

1. this application pretension mechanism eliminates the clearance between steering column and the interior pillar pipe, provides the pretightning force, improves the rigidity of steering column. This application pretension mechanism avoids producing the abnormal sound among the length adjustment process.

2. The pretension assembly of this application pretension mechanism comprises end plug, elastomeric element, compact heap, places support sleeve's pretension assembly inslot, can rotate the end plug as required, and then adjusts the pretightning force, can dismantle.

3. The hole is opened in the middle of this application pretension mechanism's compact heap, can the oil storage. One side that compact heap and steering tube contacted has the boss, can reduce the two area of contact like this, and the space between the boss can the oil storage moreover, and better lubrication action prevents that lubricating oil from running off.

4. During the installation of this application, put compact heap, elastomeric element in the recess in proper order, reuse end plug screw can, the installation is simple.

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 will be briefly introduced below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic structural diagram of the installed pretensioning mechanism of the present application.

Fig. 2 is a schematic view of a split structure of the pretensioning mechanism of the present application.

Fig. 3 is a schematic sectional structure diagram of the pretensioning mechanism according to the present application after installation.

Fig. 4 is a schematic structural view of a support sleeve of the pretensioning mechanism of the present application.

Fig. 5 is a schematic structural diagram of a pretensioning assembly of the pretensioning mechanism of the present application.

Fig. 6 is an enlarged view of a structure of a pressing block of the pretensioning mechanism of the present application.

Fig. 7 is another enlarged angle view of the pressing block structure of the pretensioning mechanism of the present application.

Reference numerals are as follows:

1. a steering column; 2. a support sleeve; 3. a pre-tightening assembly; 21. a threaded hole; 22. a limiting groove; 31. an end plug; 32. an elastic member; 33. a compression block; 331. an aperture; 332. a boss; 333. a limiting ring; 334. and a limiting bulge.

Detailed Description

The pre-tightening mechanism is a split structure and can be disassembled, and the pre-tightening force can be adjusted by screwing the end plug.

As shown in fig. 1-5, an adjustable pre-tightening mechanism for a steering column comprises a support sleeve 2 and a pre-tightening assembly 3 of the steering column 1, wherein a threaded hole 21 is formed in the support sleeve 2, the pre-tightening assembly 3 is arranged in the threaded hole 21, and a longitudinal limiting groove 22 is formed in the side wall of the threaded hole 21. The pre-tightening assembly 3 sequentially comprises an end plug 31, an elastic component 32 and a pressing block 33 from outside to inside. The end plug 31 is externally threaded to mate with a threaded bore. The end plug is similar to a jackscrew construction. Preferably, the elastic member is a disc spring.

As shown in fig. 6 to 7, a hole 331 is formed in the middle of the pressing block 33, one side of the pressing block, which is in contact with the inner column 4 of the steering column 1, is arc-shaped, a plurality of bosses 332 are arranged on a non-opening portion of the arc-shaped surface, a limiting ring 333 is arranged on the periphery of one side of the pressing block 33, which is in contact with the elastic component 32, the elastic component 32 is arranged in the limiting ring 333, a limiting protrusion 334 is arranged on the side surface of the pressing block 33, and the limiting protrusion 334 is arranged in the limiting groove 22.

The end plug 31 and the pressing block 33 may be made of metal or plastic, and when the end plug 31 is made of plastic, a metal sheet is preferably fixed on the side of the end plug contacting the elastic member 32, so that the end plug is wear-resistant.

As shown in fig. 6-7, the limiting protrusion 334 of the pressing block 33 has a structure with two sides higher than each other, and the limiting groove 22 has a structure matching with the limiting protrusion, so that the fit therebetween is better.

The use process comprises the following steps:

in practical production, at least one pre-tightening mechanism is arranged between the inner pipe column and the supporting sleeve, and the pre-tightening assembly comprises a pressing block, an elastic component and an end plug. A pre-tightening assembly groove used for installing a pre-tightening assembly is formed in the supporting sleeve and comprises a threaded hole in the outer side and a groove below the threaded hole. The end plug is a knob element having an external thread, cooperating with the threaded hole, extending towards the inside of the threaded hole. One side of the end plug used for abutting is provided with a metal sheet which is contacted with the elastic component and can be used for preventing the elastic component from wearing the end plug. The pressing block is a plastic piece and is arranged in a groove arranged on the supporting sleeve, one side of the cambered surface of the pressing block is in contact with the inner tubular column to pre-tighten the inner tubular column, and meanwhile, the cambered surface is also provided with a plurality of bosses, so that the friction force of the contact surface of the pressing block and the inner tubular column can be reduced, and lubricating grease can be stored through grooves and round holes between the bosses; the other side is provided with a limit ring structure of a limit elastic component. The side face of the pressing block is provided with a limiting bulge for preventing rotation, and the limiting bulge is in clearance fit with a limiting groove in the supporting sleeve. The elastic component is used for applying pretightening force, is arranged in the clamping block and is limited by an annular structure on the clamping block. The pre-tightening force can be adjusted through the end plug when needed.

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 an adjustable pretension mechanism of steering column which characterized in that: including the support sleeve and the pretension subassembly of steering column, open threaded hole on the support sleeve, the pretension subassembly is arranged in threaded hole, it has fore-and-aft spacing groove to open on the screw hole lateral wall, the pretension subassembly is by outer end plug, elastomeric element, compact heap of including in proper order to interior, the end plug has the external screw thread, with the screw hole cooperation, open porosely in the compact heap middle part, be the arc with one side of the inner tube post contact of steering column, the non-open-ended part of arcwall face is equipped with a plurality of bosss, is equipped with the spacing ring in compact heap and elastomeric element contact one side periphery, and elastomeric element arranges spacing intra-annular in, and the compact heap side is equipped with spacing arch, spacing arch is arranged in the spacing groove.

2. The adjustable pretensioning mechanism for steering columns according to claim 1, characterized in that: the end plug and the pressing piece are plastic pieces, and a metal sheet is fixed on one side of the end plug, which is in contact with the elastic component.

3. The adjustable pretensioning mechanism for steering columns according to claim 1, characterized in that: the limiting protrusions of the pressing block are of a structure with two sides high and a middle low.

4. The adjustable pretensioning mechanism for steering columns according to claim 1, characterized in that: the elastic component is a disc spring.