CN114162208A

CN114162208A - Steering column length adjustment mechanism

Info

Publication number: CN114162208A
Application number: CN202010953428.3A
Authority: CN
Inventors: 周裕; 李婷; 王庆君; 王瑞; 宋洋; 成会明
Original assignee: Jilin Shibao Machinery Manufacturing Co ltd
Current assignee: Jilin Shibao Machinery Manufacturing Co ltd
Priority date: 2020-09-11
Filing date: 2020-09-11
Publication date: 2022-03-11

Abstract

The invention relates to a steering column length adjusting mechanism. The length limiting structure is fixed on the outer wall of a steering column pipe, the sleeve is fixed on a supporting piece outside the column pipe, the telescopic pin shaft is inserted into the sleeve and penetrates through the sleeve, the telescopic pin shaft faces the length adjusting limiting mechanism, one end of the cam is fixedly connected with a handle bolt, the other end of the cam is arranged on the outer side of the pin shaft, the cam compresses the telescopic pin shaft inwards, and the inner side face of the lower end of the cam comprises a high plane and a low plane. This application is adjusted structure and is had the burst function of contracting and the separation of length adjustment function of steering column, has solved among the prior art when the steering column takes place to burst and contracts, and spacing part can be cut or damage and produce a great power simultaneously, and this great power is undulant to holistic burst power of contracting production, and the power of contracting is burst in the increase, influences the effect of the function of contracting.

Description

Steering column length adjustment mechanism

Technical Field

The invention relates to the field of automobile steering columns, in particular to a steering column length adjusting mechanism.

Background

When the automobile is violently impacted, the steering wheel can impact a driver, and in order to reduce the impact force borne by the driver, the steering column of the automobile is designed into a collapsible structure, so that the impact force transmitted to a human body from the steering column due to the impact can be dispersed.

Steering column length adjustment mechanism among the prior art is including setting up the spout on column tube periphery support piece and the spacing part that sets up in the column tube periphery, and in the spout was arranged in to the spacing part, when steering tube adjusting length, spacing part was used for spacingly. However, when a vehicle is impacted strongly, and the steering column is collapsed, the limiting part can be sheared or damaged and generate a large force, and the large force generates fluctuation on the overall collapse force to influence the collapse function.

At present, a steering column length adjusting mechanism is urgently needed, when a steering column collapses, the steering column is not affected by a limiting part, and the collapsing function effect is good.

Disclosure of Invention

The invention aims to provide a steering column length adjusting mechanism, which solves the problem that in the prior art, when a steering column collapses, a great force value is generated due to the fact that a length limiting part needs to be cut off, and the collapsing function is influenced.

The technical scheme of the invention is as follows:

the utility model provides a steering column length adjustment mechanism, includes length limit structure, scalable round pin axle, sleeve, cam, length limit structure fixes on steering column pipe outer wall, the sleeve is fixed on the support piece of column pipe outside, and scalable round pin axle inserts the sleeve and passes the sleeve, and scalable round pin axle faces length adjustment limit mechanism, cam one end and handle bolt fixed connection, the round pin outside is arranged in to the cam other end, and the cam inwards compresses tightly scalable round pin axle, cam lower extreme medial surface includes high plane and low plane.

The invention has the beneficial effects that:

1. use the length adjustment mechanism of this application, when the pillar pipe length is adjusted to needs, the handle is opened, and the round pin axle is impressed in the length limit structure, can restrict the length adjustment of pillar pipe. When the handle is in a closed state, the pin shaft is positioned outside the length limiting structure of the column tube, when the automobile is in strong impact, the steering column is collapsed, the limiting part in the prior art does not block the steering column, when the steering column is collapsed, the limiting part does not need to be cut off or damaged, the influence of the limiting part in the prior art on the collapsing function of the steering column is eliminated, and the fluctuation of the collapsing force is reduced.

2. This application is adjusted structure and is had the burst function of contracting and the separation of length adjustment function of steering column, has solved among the prior art when the steering column takes place to burst and contracts, and spacing part can be cut or damage and produce a great power simultaneously, and this great power is undulant to holistic burst power of contracting production, and the power of contracting is burst in the increase, influences the effect of the function of contracting.

Drawings

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

Fig. 2 is a schematic view of a length limiting structure of the present application.

Fig. 3 is an exploded view of the length limiting structure of the present application.

Fig. 4 is a schematic structural view of the present application with a cam portion removed.

Fig. 5 is a schematic structural view of the pin and the sleeve of the present application.

Fig. 6 is a schematic view of the cam structure of the present application.

Fig. 7 is another angle structure diagram of the cam of the present application.

Fig. 8 is an exploded view of the present application.

Fig. 9 is a cross-sectional view of the present application. (handle closed state).

FIG. 10 is a cross-sectional view of the present application. (handle open state).

Fig. 11 is a schematic view of a steering column length limiting mechanism in the prior art.

Detailed Description

As shown in fig. 11, the current-stage steering column for an automobile includes a column tube 1, a support member 2, a bracket assembly 3, a handle 4, and a handle bolt 5, wherein the support member 2 is fixed to the outer periphery of the column tube 1, and the column tube is fixed to the bracket assembly by passing the handle 4 and the handle bolt 5 through the support member 2 and two side plates 6 of the bracket assembly. When the steering column at the present stage is collapsed, the limit part of the length adjusting mechanism needs to be cut or damaged, so that the collapse force is increased, and the collapse effect of the steering column is influenced.

In view of the above problems, the steering column length adjustment mechanism of the present application has been invented, and the present application will be described in detail below with reference to the accompanying drawings:

as shown in fig. 1, 8, 9, and 10, the steering column length adjusting mechanism includes a length limiting structure 7 (for limiting the length of the steering column), a retractable pin 8, a sleeve 9, and a cam 10, wherein the length limiting structure 7 is fixed on the outer wall of the steering column tube 1, the sleeve 9 is fixed on the support member 2 outside the steering column tube, the retractable pin 8 is inserted into the sleeve and passes through the sleeve 9, the retractable pin 8 faces the length adjusting limiting structure, one end of the cam 10 is fixedly connected with the handle bolt 5, the other end of the cam 10 is arranged outside the retractable pin 8, the cam 10 compresses the retractable pin inwards, and the inner side of the end part of the cam arranged outside the retractable pin includes a high plane 12 and a low plane 13. The telescopic pin shaft 8 is in clearance fit with the sleeve 9.

When the handle is locked, the telescopic pin shaft 8 is separated from the length limiting structure.

When the handle is in an open state, the telescopic pin shaft 8 is inserted into the length limiting structure.

As shown in fig. 6 and 7, the inner side of the end of the cam 10, which is positioned at the outer side of the retractable pin shaft, between the high plane 12 and the low plane 13 is a transition plane 14, and the transition plane 14 is a curved surface or a flat surface. The transition surface 14 plays a transition role in the handle opening process, and prevents the handle from generating sudden change of force value when being opened and influencing hand feeling.

The structure of the fixed connection end of the cam 10 and the handle bolt 5 is not limited, but the following structure is specially designed for being matched with the handle bolt and the nut for locking the handle bolt at the present stage.

As shown in fig. 6 and 7, a through hole 16 is formed at the fixed connection end of the cam 10 and the handle bolt 5, a recess 15 is formed at the inward side of the fixed connection end of the cam 10 and the handle bolt, the handle bolt 5 passes through the through hole 16 and is fixedly connected with the through hole 16, and a lock nut 17 on the handle bolt 5 is arranged in the recess and is fixedly connected with the recess. This allows for a more secure attachment to the handle bolt and nut.

This application length limit structure can multiple selection, and this application has enumerated following three kinds of structures.

Firstly, the length limiting structure 7 comprises a limiting block 18 fixed on the periphery of the column tube, and a longitudinal long groove or slot 19 is formed on the limiting block 18.

Secondly, the length limiting structure 7 comprises a limiting block 18 fixed on the periphery of the column tube, an elongated slot or a long hole 19 is formed on the limiting block, and buffering members 20 are fixed at two ends of the elongated slot or the long hole.

Thirdly, as shown in fig. 2 and 3, the length limiting structure 7 includes a limiting block 18 fixed on the periphery of the column tube, and further includes a limiting groove 21, the limiting block is provided with an elongated slot or a long slot 19, the limiting groove 21 includes two limiting strips 22 and an inward concave groove 23 between the two limiting strips, the inward groove 23 is disposed in the elongated slot or the long slot of the limiting block 18, the limiting strips 22 are fixedly connected with the limiting block 18, and two ends of the inward groove 23 are fixedly connected with a buffer member 20.

The limiting blocks 18 in the above three cases may be rectangular limiting blocks or limiting blocks with a U-shaped cross section.

As shown in fig. 4, 9 and 10, a pin cap 24 is fixedly connected to one end of the retractable pin 8 contacting the cam 10, and the retractable pin cap 24 is made of a plastic material. The pin shaft cap is assembled on the telescopic pin shaft, and has the functions of resisting friction and eliminating noise.

As shown in fig. 4 and 5, the retractable pin 8 is composed of a pin 25 and an elastic member (spring) 26, and the elastic member is sleeved on the pin. The elastic element is arranged between the sleeve and the pin shaft to play the roles of compression and bounce,

the use process comprises the following steps: when the handle is in a closed state, the low plane of the cam, which compresses the end of the telescopic pin shaft, is pressed on the pin shaft cap of the telescopic pin shaft structure, the spring is in the longest bounce state, the pin shaft is positioned outside the column tube length limiting structure, and the steering column can realize the normal collapse function at the moment. When the handle is opened, the cam rotates along with the handle shaft, the high plane of the compression telescopic pin shaft end of the cam is compressed on the pin shaft cap of the telescopic pin structure, the spring is compressed, and the pin shaft extends into the long groove, the long hole or the groove of the column tube for adjusting and limiting, so that the function of adjusting and limiting is achieved. The transition surface plays a transition role in the handle opening process, and the handle is prevented from generating force value mutation when being opened to influence hand feeling. If the vehicle is impacted and the steering column collapses, the pin shaft is arranged outside the length limiting structure and does not contain other limiting parts in the prior art, so the collapsing function effect is good.

Claims

1. A steering column length adjustment mechanism which characterized in that: including length limit structure, scalable round pin axle, sleeve, cam, length limit structure fixes on steering column post outer wall, the sleeve is fixed on the support piece of post outside, and scalable round pin axle inserts the sleeve and passes the sleeve, and scalable round pin axle faces length limit mechanism, cam one end and handle bolt fixed connection, the scalable round pin outside is arranged in to the cam other end, and the scalable round pin axle is inwards compressed tightly to the cam, cam lower extreme medial surface includes high plane and low plane.

2. A steering column length adjustment mechanism according to claim 1, wherein: the cam is arranged on the inner side of one end of the outer side of the telescopic pin shaft, and a transition surface is arranged between the high plane and the low plane and is a curved surface or a plane.

3. A steering column length adjustment mechanism according to claim 1 or 2, wherein: the handle bolt is fixedly connected with the through hole through the concave and the through hole, and the locking nut on the handle bolt is arranged in the concave and fixedly connected with the concave.

4. A steering column length adjustment mechanism according to claim 1, wherein: the length limiting structure comprises a limiting block fixed on the periphery of the column tube, and a longitudinal long groove or a long hole is formed in the limiting block.

5. A steering column length adjustment mechanism according to claim 1, wherein: the length limiting structure comprises a limiting block fixed on the periphery of the column tube, an elongated slot or a long hole is formed in the limiting block, and buffering parts are fixed at two ends of the elongated slot or the long hole.

6. A steering column length adjustment mechanism according to claim 1, wherein: the length limiting structure comprises a limiting block fixed on the periphery of the column tube and further comprises a limiting groove, the limiting block is provided with an elongated slot or a long hole, the limiting groove comprises two limiting strips and a groove between the two limiting strips, the groove is arranged in the elongated slot or the long hole of the limiting block, the limiting strips are fixedly connected with the limiting block, and buffering parts are fixedly connected with the two ends of the groove.

7. The steering column length adjustment mechanism according to any one of claims 4 to 6, wherein: the limiting block can be a long-strip rectangular limiting block or a limiting block with a U-shaped cross section.

8. A steering column length adjustment mechanism according to claim 1, wherein: the telescopic pin shaft is in clearance fit with the sleeve.

9. A steering column length adjustment mechanism according to claim 1, wherein: one end of the telescopic pin shaft in contact with the cam is fixedly connected with a pin shaft cap, and the telescopic pin shaft cap is made of plastic materials.

10. A steering column length adjustment mechanism according to claim 1, wherein: the telescopic pin shaft consists of a pin shaft and an elastic part, and the elastic part is sleeved on the pin shaft.