阅读说明：本技术 机械调节式转向管柱支架 (Mechanical adjusting type steering column support ) 是由 秦毅 王科敏 王朝广 靳永刚 张婷 靳云云 于 2019-03-25 设计创作，主要内容包括：本发明涉及车辆零部件技术领域,具体涉及一种机械调节式转向管柱支架,尤其适用于工程车辆、特种车辆、商用车辆等,其包括摆动部、伸缩部和调整部,摆动部包括两相对设置的侧板及连接两侧板的固定板,两侧板的相对位置处分别设有轴孔；伸缩部包括管柱及连接于管柱下方的管柱支架,管柱支架包括两相对设置的滑道立板和与两滑道立板相连的滑道背板,两滑道立板上对应设有沿管柱轴线平行方向延伸的长导槽；调整部包括芯轴、弹性垫、固定轮、主动轮和手柄；满足了单件、小批量生产、低成本、定制化、可靠性高的要求,结构简单,整体强度高、精密程度低,对使用环境的适应性强、调节范围大。(The invention relates to the technical field of vehicle parts, in particular to a mechanically-adjusted steering column support, which is particularly suitable for engineering vehicles, special vehicles, commercial vehicles and the like and comprises a swinging part, a telescopic part and an adjusting part, wherein the swinging part comprises two oppositely-arranged side plates and a fixing plate for connecting the two side plates, and shaft holes are respectively formed in the opposite positions of the two side plates; the telescopic part comprises a pipe column and a pipe column support connected below the pipe column, the pipe column support comprises two opposite slideway vertical plates and a slideway back plate connected with the two slideway vertical plates, and long guide grooves extending along the parallel direction of the pipe column axis are correspondingly arranged on the two slideway vertical plates; the adjusting part comprises a mandrel, an elastic cushion, a fixed wheel, a driving wheel and a handle; the device meets the requirements of single-piece and small-batch production, low cost, customization and high reliability, and has the advantages of simple structure, high overall strength, low precision degree, strong adaptability to the use environment and wide adjustment range.)

1. A mechanically adjustable steering column support is characterized by comprising a swinging part, a telescopic part and an adjusting part;

the swinging part comprises two side plates which are oppositely arranged and a fixing plate which is connected with the two side plates, and shaft holes are respectively arranged at the opposite positions of the two side plates;

the telescopic part comprises a pipe column and a pipe column support connected below the pipe column, the pipe column support comprises two opposite slideway vertical plates and a slideway back plate connected with the two slideway vertical plates, and long guide grooves extending along the parallel direction of the pipe column axis are correspondingly arranged on the two slideway vertical plates;

the adjusting part comprises a mandrel, two first elastic pads, two first fixed wheels, two first driving wheels and a handle;

the two slideway vertical plates are positioned between the two side plates, the mandrel penetrates through the shaft hole and the long guide groove, the mandrel can slide along the axial direction of the long guide groove, the two first fixed wheels are respectively fixed at the inner sides of the two side plates, the two first driving wheels are positioned at the inner sides of the two first fixed wheels and are respectively contacted with the two first fixed wheels, the two first elastic pads are respectively and symmetrically positioned between the first driving wheels at the two sides and the slideway vertical plates, the mandrel penetrates through the first driving wheels, the first fixed wheels and the first elastic pads, the first driving wheels are fixedly connected with the mandrel, and the first fixed wheels and the first elastic pads are rotatably connected with the mandrel; the surfaces of the first driving wheel, which are contacted with the first fixed wheel, are respectively provided with first oblique splitting surfaces with opposite oblique directions, under the elastic thrust of the first elastic pad, at least part of the two first oblique splitting surfaces are always attached, the handle can drive the mandrel to rotate, the mandrel can drive the first driving wheel to rotate, and then the contact positions of the two first oblique splitting surfaces are adjusted, so that the first driving wheel axially moves along the mandrel to control the compression and the release of the first elastic pad, and the position of the mandrel in the long guide groove is positioned, locked and released.

2. The mechanically adjustable steering column support according to claim 1, further comprising a fixed mounting portion surrounding the swinging portion, the fixed mounting portion being pivotally connected to the swinging portion, the fixed mounting portion having a slot through which the spindle passes and is slidable within the slot to allow the swinging portion to swing about the pivotal connection with respect to the fixed mounting portion;

the adjusting part further comprises two second elastic pads, two second fixed wheels and two second driving wheels, the two second fixed wheels are respectively fixed on the outer sides of the two side plates, the two second driving wheels are located on the outer sides of the two second fixed wheels and are respectively contacted with the two second fixed wheels, the two second elastic pads are respectively and symmetrically located between the second driving wheels on the two sides and the fixed mounting part, the mandrel penetrates through the second driving wheels, the second fixed wheels and the second elastic pads, the second driving wheels are fixedly connected with the mandrel, the second fixed wheels and the second elastic pads are rotatably connected with the mandrel, positioning ends are fixed at two ends of the mandrel, and the positioning ends are clamped on the outer sides of the sliding grooves to position the mandrel; the surfaces of the second driving wheel, which are contacted with the second fixed wheel, are respectively provided with second oblique splitting surfaces with opposite oblique directions, under the elastic thrust of the second elastic cushion, at least part of the two second oblique splitting surfaces are always attached, the mandrel can drive the second driving wheel to rotate, and then the contact positions of the two second oblique splitting surfaces are adjusted, so that the second driving wheel axially moves along the mandrel to control the compression and the release of the second elastic cushion, and the swing position of the swing part relative to the fixed installation part is positioned, locked and released.

3. A mechanically adjustable steering column support according to claim 2, wherein the locating end is a stepped boss and the end of the spindle is threaded, the spindle passing through the stepped boss and being fixedly connected thereto by a nut.

4. A mechanically adjustable steering column support according to claim 1, wherein the fixed plate of the swing portion is provided with at least two locating bosses, and the slide back plate of the telescopic portion is located between the two locating bosses, so as to provide a limiting guide for the slide back plate.

5. A mechanically adjustable steering column support according to claim 2, wherein the first and second resilient pads are rubber pads.

6. A mechanically adjustable steering column support according to claim 1, wherein the handle is fixedly connected to a secondary drive wheel, and wherein the spindle is rotated by operation of the secondary drive wheel.

7. A mechanically adjustable steering column support according to claim 2, wherein the first fixed sheave and the second fixed sheave are fixedly connected to the side plate by bolts and nuts.

8. The mechanically adjustable steering column support according to claim 2, wherein the first driver contacts the first fixed sheave with a plurality of sets of first chamfers having opposite inclinations, and the second driver contacts the second fixed sheave with a plurality of sets of second chamfers having opposite inclinations.

9. The mechanically adjustable steering column support according to claim 8, wherein the first plurality of sets of slash faces are located on the same circumference and the second plurality of sets of slash faces are located on the same circumference.

10. The mechanically adjustable steering column support according to claim 1, wherein the swinging, telescoping and adjustment sections are metal.

Technical Field

The invention relates to the technical field of vehicle parts, in particular to a mechanical adjusting type steering column support.

Background

Steering column support in the existing market, casing are mainly the working of plastics to middle adjustment mechanism is electronic regulation system, and the dismouting is complicated, the environmental requirement to the use is higher, and the maintenance cost is high, and single production cost is high, and is stronger to the dependence of mould, hardly satisfies the requirement of single, small batch, customization.

In view of the above-mentioned drawbacks, the inventors of the present invention have finally obtained the present invention through a long period of research and practice.

Disclosure of Invention

In order to solve the technical defects, the invention provides a mechanically-adjusted steering column support which is particularly suitable for engineering vehicles, special vehicles, commercial vehicles and the like, meets the requirements of single-piece, small-batch production, low cost, customization and high reliability, and has the advantages of simple structure, high overall strength, low precision degree, strong adaptability to use environments and wide adjustment range.

The technical scheme adopted by the invention is as follows:

a mechanical adjustment type steering column support comprises a swinging part, a telescopic part and an adjusting part;

the swinging part comprises two side plates which are oppositely arranged and a fixing plate which is connected with the two side plates, and shaft holes are respectively arranged at the opposite positions of the two side plates;

the telescopic part comprises a pipe column and a pipe column support connected below the pipe column, the pipe column support comprises two opposite slideway vertical plates and a slideway back plate connected with the two slideway vertical plates, and long guide grooves extending along the parallel direction of the pipe column axis are correspondingly arranged on the two slideway vertical plates;

the adjusting part comprises a mandrel, two first elastic pads, two first fixed wheels, two first driving wheels and a handle;

the two slideway vertical plates are positioned between the two side plates, the mandrel penetrates through the shaft hole and the long guide groove, the mandrel can slide along the axial direction of the long guide groove, the two first fixed wheels are respectively fixed at the inner sides of the two side plates, the two first driving wheels are positioned at the inner sides of the two first fixed wheels and are respectively contacted with the two first fixed wheels, the two first elastic pads are respectively and symmetrically positioned between the first driving wheels at the two sides and the slideway vertical plates, the mandrel penetrates through the first driving wheels, the first fixed wheels and the first elastic pads, the first driving wheels are fixedly connected with the mandrel, and the first fixed wheels and the first elastic pads are rotatably connected with the mandrel; the surfaces of the first driving wheel, which are contacted with the first fixed wheel, are respectively provided with first oblique splitting surfaces with opposite oblique directions, under the elastic thrust of the first elastic pad, at least part of the two first oblique splitting surfaces are always attached, the handle can drive the mandrel to rotate, the mandrel can drive the first driving wheel to rotate, and then the contact positions of the two first oblique splitting surfaces are adjusted, so that the first driving wheel axially moves along the mandrel to control the compression and the release of the first elastic pad, and the position of the mandrel in the long guide groove is positioned, locked and released.

The fixed installation part surrounds the swinging part, the fixed installation part is hinged with the swinging part, a sliding groove is formed in the fixed installation part, and the core shaft penetrates through the sliding groove and can slide in the sliding groove to enable the swinging part to swing around the hinged position as a center relative to the fixed installation part;

the adjusting part further comprises two second elastic pads, two second fixed wheels and two second driving wheels, the two second fixed wheels are respectively fixed on the outer sides of the two side plates, the two second driving wheels are located on the outer sides of the two second fixed wheels and are respectively contacted with the two second fixed wheels, the two second elastic pads are respectively and symmetrically located between the second driving wheels on the two sides and the fixed mounting part, the mandrel penetrates through the second driving wheels, the second fixed wheels and the second elastic pads, the second driving wheels are fixedly connected with the mandrel, the second fixed wheels and the second elastic pads are rotatably connected with the mandrel, positioning ends are fixed at two ends of the mandrel, and the positioning ends are clamped on the outer sides of the sliding grooves to position the mandrel; the surfaces of the second driving wheel, which are contacted with the second fixed wheel, are respectively provided with second oblique splitting surfaces with opposite oblique directions, under the elastic thrust of the second elastic cushion, at least part of the two second oblique splitting surfaces are always attached, the mandrel can drive the second driving wheel to rotate, and then the contact positions of the two second oblique splitting surfaces are adjusted, so that the second driving wheel axially moves along the mandrel to control the compression and the release of the second elastic cushion, and the swing position of the swing part relative to the fixed installation part is positioned, locked and released.

Furthermore, the positioning end is a step shaft sleeve, the end part of the mandrel is of a threaded structure, and the mandrel penetrates through the step shaft sleeve and is fixedly connected with the step shaft sleeve through a nut.

Further, be equipped with two at least location bosss on the fixed plate of swing portion, the slide backplate of pars contractilis is located between two location bosss to carry out spacing direction to the slide backplate.

Preferably, the first elastic pad and the second elastic pad are rubber pads.

Furthermore, the handle is fixedly connected with a second driving wheel, and the mandrel is driven to rotate by operating the second driving wheel.

Further, the first fixed wheel and the second fixed wheel are fixedly connected with the side plates through bolts and nuts.

Furthermore, a plurality of groups of first inclined splitting surfaces with opposite inclination directions are respectively arranged on the surfaces of the first driving wheel, which are in contact with the first fixed wheel, and a plurality of groups of second inclined splitting surfaces with opposite inclination directions are respectively arranged on the surfaces of the second driving wheel, which are in contact with the second fixed wheel.

Furthermore, the multiple groups of first oblique cleaved surfaces are positioned on the same circumference, and the multiple groups of second oblique cleaved surfaces are positioned on the same circumference.

Further, the swing portion, the telescopic portion and the adjusting portion are made of metal materials.

Compared with the prior art, the invention has the beneficial effects that:

the mechanically-adjusted steering column support solves the economic cost brought by a die, and mainly adopts a welding process of steel plates and aluminum plates and an assembling process of machined parts. Flexible changes can be made to the changes of customization requirements, and the economy is basically not increased; the whole main body part is of a steel structure, has obvious advantage in bearing external force, and is suitable for the use working conditions of engineering vehicles, special vehicles and commercial vehicles. The current production modes of engineering vehicles, special vehicles and commercial vehicles are basically order type small-batch production, and the characteristics of the steering column, such as production, process, structure and the like, meet the production requirements and the use requirements of the three vehicle products.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic diagram of the overall construction of a mechanically adjustable steering column support of the present invention;

FIG. 2 is a schematic structural view of the telescoping section of the mechanically adjustable steering column bracket of the present invention;

FIG. 3 is a side view of FIG. 1;

FIG. 4 is a schematic structural view of the pendulum of the mechanically adjustable steering column bracket of the present invention;

FIG. 5 is a side view of FIG. 3;

FIG. 6 is a schematic structural view of an adjustment portion of the mechanically adjustable steering column bracket of the present invention;

FIG. 7 is a schematic illustration of a first drive pulley of the mechanically adjustable steering column support of the present invention;

FIG. 8 is a schematic representation of the construction of the first fixed sheave of the mechanically adjustable steering column bracket of the present invention;

FIG. 9 is a schematic illustration of a placement position of a resilient pad of the mechanically adjustable steering column bracket of the present invention;

FIG. 10 is a schematic view of the mechanical adjustment type steering column support of the present invention in a retracted state;

FIG. 11 is a cross-sectional view of the mechanically adjustable steering column bracket of the present invention;

fig. 12 is a schematic view of a swing adjustment condition of the mechanically adjustable steering column bracket of the present invention.

Detailed Description

The above and further features and advantages of the present invention are described in more detail below with reference to the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description of the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

As shown in fig. 1, a mechanically adjustable steering column bracket includes a swing portion 2, a telescopic portion 1, an adjusting portion 3, and a fixed mounting portion 4; the steering column support mainly adopts a welding process of steel plates and aluminum plates and an assembling process of machined parts. The main body part of the whole steering column is realized by adopting tailor-welding molding of steel plate pieces and machined pieces and then performing secondary machining molding.

As shown in fig. 2 and fig. 3, which are schematic structural diagrams of the telescopic portion, the telescopic portion 1 includes a tubular column 11 and a tubular column support 12 connected below the tubular column, the tubular column support 12 includes two opposite slideway vertical plates 121 and a slideway back plate 122 connected with the two slideway vertical plates, and the two slideway vertical plates 121 are correspondingly provided with long guide slots 1211 extending along a parallel direction of an axis of the tubular column.

As shown in fig. 4 and 5, which are schematic structural views of the swinging portion 2, the swinging portion 2 includes two side plates 22 disposed opposite to each other and a fixing plate 21 connecting the two side plates 22, shaft holes 221 are respectively disposed at opposite positions of the two side plates 22, and a hinge end 23 is disposed above the shaft holes; the fixing plate 21 is provided with positioning bosses 211, preferably 4 positioning bosses 211, and the lower ends of the two side plates 22 are connected with a bottom plate 24. The slideway back plate 122 of the telescopic part 1 is positioned between the positioning bosses 211, so that the slideway back plate 122 is limited and guided. The fixed installation part 4 surrounds the swinging part 2, the fixed installation part 4 is hinged with the swinging part 2, a sliding groove 41 is arranged on the fixed installation part 4, and the core shaft 31 passes through the sliding groove 41 and can slide in the sliding groove 41 to enable the swinging part 2 to swing around the hinged position as a center relative to the fixed installation part 4.

As shown in fig. 6 and 9, the adjusting part 3 includes a spindle 31, two first elastic pads 32, two first driving wheels 33, two first fixed wheels 34, two second fixed wheels 35, two second driving wheels 36, two second elastic pads 37 and a handle 40; the two slide way vertical plates 121 are positioned between the two side plates 22, the mandrel 31 passes through the shaft hole 221 and the long guide groove 1211, the mandrel 31 can slide along the axial direction of the long guide groove 1211, the two first fixed wheels 34 are respectively fixed at the inner sides of the two side plates 22, the two first driving wheels 33 are positioned at the inner sides of the two first fixed wheels 34 and are respectively contacted with the two first fixed wheels 34, the two first elastic pads 32 are respectively and symmetrically positioned between the first driving wheels 33 at the two sides and the slide way vertical plate 121, the mandrel 31 passes through the first driving wheels 33, the first fixed wheels 34 and the first elastic pads 32, the first driving wheels 33 are fixedly connected with the mandrel 31, and the first fixed wheels 34 and the first elastic pads 32 are rotatably connected with the mandrel 31; the surfaces of the first driving wheel 33 contacting the first fixed wheel 34 are respectively provided with first inclined splitting surfaces 331, 341 with opposite inclined directions, under the elastic thrust of the first elastic pad 32, the two first inclined splitting surfaces 331, 341 are always at least partially attached, the handle 40 can drive the spindle 31 to rotate, the spindle 31 can drive the first driving wheel 33 to rotate, and further the contact positions of the two first inclined splitting surfaces 331, 341 are adjusted, so that the first driving wheel 33 axially moves along the spindle 31 to control the compression and release of the first elastic pad 32, thereby positioning and locking the position of the spindle 31 in the long guide groove 1211. The two second fixed wheels 35 are respectively fixed on the outer sides of the two side plates 121, the two second driving wheels 36 are positioned on the outer sides of the two second fixed wheels 35 and respectively contact with the two second fixed wheels 35, the two second elastic pads 37 are respectively and symmetrically positioned between the second driving wheels 36 on the two sides and the fixed mounting portion 4, the mandrel 31 passes through the second driving wheels 36, the second fixed wheels 35 and the second elastic pads 37, the second driving wheels 36 are fixedly connected with the mandrel 31, the second fixed wheels 35 and the second elastic pads 37 are rotatably connected with the mandrel 31, the two ends of the mandrel 31 are respectively fixed with a positioning end 38, and the positioning ends 38 are clamped on the outer side of the sliding groove 41 to position the mandrel 31; the surfaces of the second driving wheel 36 contacting the second fixed wheel 35 are respectively provided with second oblique splitting surfaces with opposite oblique directions, under the elastic thrust of the second elastic pad 37, the two second oblique splitting surfaces are at least partially attached all the time, the mandrel 31 can drive the second driving wheel 36 to rotate, and further the contact position of the two second oblique splitting surfaces is adjusted, so that the second driving wheel 36 axially moves along the mandrel 31 to control the second elastic pad 37 to compress and release, thereby positioning, locking and releasing the swing position of the swing part 2 relative to the fixed mounting part 4.

It can be understood that the first driving wheel 33 and the first fixed wheel 34, and the second driving wheel 36 and the second fixed wheel 35 are contacted through the oblique split surfaces, and the relative movement between the oblique split surfaces can change the overall matching thickness of the driving wheel and the fixed wheel, so as to achieve the purpose of compressing the first elastic cushion 33 and the second elastic cushion 37. Under the locking state, all the inclined plane contacts between the driving wheel and the fixed wheel are the contacts between the thick surface and the thick surface, the contact between the thick surface and the thick surface increases the thickness direction of the wheel train, the smaller the position gap of the elastic pad is, the maximum compression amount of the elastic pad is, the maximum compression force is also, the maximum friction force is generated between the rubber block and the telescopic part and between the rubber block and the swinging part, and therefore the steering column adjusting mechanism can be locked, and the steering wheel is ensured to be immobile. Under the unlocking state, the thin surfaces of all driving wheels are in contact with the thick surface of the fixed wheel, and the oblique wedge surfaces are filled with each other, so that the thickness of the wheel train in the thickness direction is minimum, the elastic pad between the wheel trains is in the minimum compression state, the compression force is also minimum, the friction force between the rubber block and the telescopic part and between the rubber block and the swinging part is minimum, the tubular column adjusting mechanism is in the unlocking state, and the steering wheel can be adjusted randomly within the adjusting range.

Preferably, the first and second elastic pads 32 and 37 are rubber pads. The handle 40 is fixedly connected to a second driving wheel 36 or is an integral structure, and the spindle 31 is driven to rotate by operating the second driving wheel 36. The first fixed wheel 34 and the second fixed wheel 35 are fixedly connected with the side plate 22 through bolts and nuts.

In a preferred embodiment, the positioning end 38 is a stepped sleeve, the end of the mandrel is a threaded structure, and the mandrel penetrates the stepped sleeve and is fixedly connected with a nut 39; the first elastic cushion 32, the first driving wheel 33, the first fixed wheel 34, the second fixed wheel 35, the second driving wheel 36 and the second elastic cushion 37 are all matched with the step shaft sleeve.

As shown in fig. 7 and 8, a plurality of sets of first inclined splitting surfaces 331 and 341 with opposite inclined directions are respectively disposed on the surfaces of the first driving wheel 33 contacting with the first fixed wheel 34, and the plurality of sets of first inclined splitting surfaces 331 and 341 are located on the same circumference. The matching of the plurality of groups of the inclined splitting surfaces which are arranged in the circumferential direction can be dispersed, stressed and accurately positioned, and the second driving wheel 36 and the second fixed wheel 35 have the same structure as the first driving wheel 33 and the first fixed wheel 34.

As shown in fig. 10 and 11, the long guide groove 1211 on the slide vertical plate 121 of the telescopic part 1 is engaged with the spindle 31 to slide up and down, so that the height adjustment (adjustment of ± 30mm in the intermediate state) of the height H of 0 to 60mm can be realized, and the adjustment of the steering wheel in the height direction can be further realized. After the adjustment is finished, the mechanism is locked through the adjusting part 3, and the state of the steering wheel after the adjustment is ensured to be fixed.

As shown in fig. 12, the swing portion 2 can be swung and adjusted relative to the fixed mounting portion 4, the included angle of the steering wheel can be adjusted, the whole steering column can realize the angle adjustment of +/-20 degrees around the hinged end of the swing portion, and therefore the steering wheel can realize the adjustment function of the front-back and inclination angles.

The foregoing is merely a preferred embodiment of this invention, which is intended to be illustrative, and not limiting. The structure, the connection mode and the like of all the components in the invention can be changed, and the equivalent transformation and the improvement on the basis of the technical scheme of the invention are not excluded from the protection scope of the invention.