CN114104084A

CN114104084A - Device for improving holding power by adjusting angle of automobile steering column

Info

Publication number: CN114104084A
Application number: CN202010887712.5A
Authority: CN
Inventors: 周裕; 李婷; 王庆君; 宋洋; 梅丽莉
Original assignee: Jilin Shibao Machinery Manufacturing Co ltd
Current assignee: Jilin Shibao Machinery Manufacturing Co ltd
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2022-03-01

Abstract

The invention relates to a device for adjusting the angle of an automobile steering column and improving the holding power. Including fitting pin, first elastic component, retaining member, cam disc and second elastic component, there is the through-hole in the middle of the retaining member, and a retaining member side has the sawtooth structure, the cam disc side is connected with the locating piece, first elastic component cover is on the fitting pin, and the fitting pin passes the through-hole on the retaining member, fitting pin and retaining member clearance fit, fitting pin and locating piece fixed connection, be fixed with the card arris that has the sawtooth structure on the curb plate of the support assembly of steering column, retaining member side sawtooth structure and card arris intermeshing. The second resilient member is disposed on the cam plate and the outer tube carrier of the steering column. The locking piece and the clamping rib are engaged on the side surface of the cam disc, so that the volume and the thickness of the locking piece can be increased, the mutual engagement force is increased, and the holding force is improved.

Description

Device for improving holding power by adjusting angle of automobile steering column

Technical Field

The invention relates to the technical field of automobile steering columns, in particular to a device for adjusting the angle of an automobile steering column and improving the holding power.

Background

The automobile steering column transmits the torque of the steering wheel to the steering gear, and drives the steering gear to realize steering. For driving comfort, the steering wheel is not fixed and may be adjusted according to the body shape of the driver in order to adjust the steering wheel to a position most comfortable to the driver. The steering column angle adjusting mechanism at the present stage comprises a support assembly, a tooth piece, a cam disc, an adjusting handle and the like, when the adjusting handle of the steering column is loosened, the steering wheel is adjusted to a reasonable position, and then the adjusting handle is locked, so that the position of the steering wheel can be fixed. In order to ensure safety and comfort in driving, it is necessary to improve the holding force between the adjustment mechanism and the steering column main body. At the present stage, a toothed sheet made of spring steel is assembled on the cam plate, when the handle is closed, the toothed sheet is pressed into a tooth groove, the toothed sheet and the tooth groove are mutually meshed to play a role in improving the holding force, when the handle is opened, the toothed sheet and the tooth groove are separated, and the steering column can realize an adjusting function. But are vulnerable to damage due to the limited strength of the spring steel and do not provide a large holding force. There is an urgent need for a device for improving the holding force after the angle adjustment of the steering column of the automobile that solves the above problems.

Disclosure of Invention

The invention aims to provide a device for improving the holding force of the angle adjustment of an automobile steering column, which can improve the holding force of the angle adjustment of the automobile steering column and ensure the driving safety.

The technical scheme of the invention is as follows:

a device for improving the retention force by adjusting the angle of an automobile steering column comprises a locking pin, a first elastic part, a locking part, a cam disc and a second elastic part, wherein a first through hole is formed in the middle of the locking part, a sawtooth structure is arranged on one side surface of the locking part, a positioning block is connected to the side surface of the cam disc, the first elastic part is sleeved on the locking pin, the locking pin is fixedly connected with the positioning block after penetrating through the through hole in the locking part, a clamping edge with the sawtooth structure is fixed on a side plate of a bracket assembly of the steering column, and the sawtooth structure on the side surface of the locking part is meshed with the sawtooth structure of the clamping edge;

the outer side of a central hole in the back of the cam disc is provided with an annular groove, the bearing piece on the outer side of the outer pipe of the steering column is provided with an annular groove, the second elastic piece is sleeved on a handle bolt of the steering column, one end of the second elastic piece is arranged in the annular groove in the back of the cam disc, and the other end of the second elastic piece is arranged in the annular groove in the bearing piece.

One side of the back of the locking part without the saw teeth is provided with a groove, and the positioning block is arranged in the groove.

The invention has the beneficial effects that:

1. the automobile steering column in the prior art is limited by the space for mounting the toothed sheet, the toothed sheet is thin and small in size, is made of spring steel materials and is weak in strength, and the cam disc is in contact with the toothed sheet and presses the spring sheet inwards, so that the spring sheet is deformed, the toothed sheet and a tooth groove are not well meshed, and the holding force is small. The locking piece is engaged with the clamping rib on the side surface of the cam plate, so that the volume and the thickness of the locking piece can be increased, the engaging force between the locking piece and the clamping rib is increased, and the holding force is improved. And the cam plate does not press the locking piece, so that the problem that the biting force between the locking piece and the clamping edge is reduced due to the fact that the locking piece is pressed to deform and the like is solved, and the holding force can be further improved.

2. The locking piece is arranged on the side surface of the cam plate, so that the contact area between the cam plate and the side plate of the bracket assembly is increased, the clamping is better, and the holding force is improved.

3. The locking member is arranged on the side surface of the cam plate, so that the locking member can be made into a large size, the thickness can be increased, and the structural design is more free.

4. The device improves the holding power, prevents the steering column from driving the steering wheel to turn over when the steering column collides violently, and plays a role in protecting a driver.

Drawings

Fig. 1 is a schematic view of the overall structure of the device for increasing retention force.

Fig. 2 is an exploded view of the retention enhancement device of the present application.

Fig. 3 is a schematic view of a split structure of the steering column according to the present application.

Fig. 4 is a partially enlarged view of a steering column with the device for improving holding power of the present application.

FIG. 5 is a partial cross-sectional view of a steering column with the improved retention device of the present application.

Fig. 6 is a schematic view of the locking member of the present application.

Fig. 7 is a schematic view of another angle of the retaining member of the present application.

Detailed Description

The automobile steering column in the prior art comprises a steering column main body 1 (comprising an outer tube 6, an inner tube, a steering shaft and a bearing part 7 outside the outer tube), a support assembly 2, a toothed sheet, a cam disc 3, a handle 4 and a handle bolt 5, wherein the support assembly 2 is arranged outside the bearing part 7 outside the outer tube of the steering column, the handle 4 is arranged on the side surface of the support assembly 2, the handle bolt 5 penetrates through the handle, the cam disc, the toothed sheet, a support assembly side plate 8, the steering column main body and the like, and the other end of the handle bolt is fixed by a nut. The bracket assembly can be separated from the steering column main body by adjusting the handle, and the bracket assembly and the steering column main body are locked by rotating the handle after the steering column is adjusted to a required angle (and then adjusting the angle of a steering wheel). After locking, the tooth sheets and tooth grooves on the side plates of the bracket assembly are required to be meshed to keep the bracket assembly and the steering column main body from moving and shaking. The toothed plate is made of spring steel and assembled on the cam plate, and when the handle is closed, the toothed plate is pressed into a tooth groove (enclosed by two racks) to improve the retaining force. When the handle is opened, the tooth blade is separated from the tooth groove, and the steering column can realize the adjusting function. Spring steel is subject to damage due to its limited strength and does not provide a large holding force.

In order to solve the problems in the prior art, the present invention provides a device for improving retention force, which is described in detail below with reference to the accompanying drawings:

as shown in fig. 1-5, a device for adjusting the angle of a steering column of an automobile to improve the retention force comprises a locking pin 9, a first elastic member 10, a locking member 11, a cam plate 3 and a second elastic member 13, wherein a first through hole 17 is formed in the middle of the locking member 11 (preferably, an annular protrusion 20 is formed on the outer side of the first through hole in front of the locking member, the rear end of the first elastic member is sleeved on the annular protrusion 20 for positioning), a sawtooth structure 16 is formed on one side surface of the locking member 11, a positioning block 12 is connected to the side surface of the cam plate 3, the first elastic member 10 is sleeved on the locking pin 9, the locking pin 9 passes through the first through hole 17 in the locking member 11 to be fixedly connected with the positioning block 12, and the locking pin 9 is in clearance fit with the locking member 11.

A clamping edge 14 with a sawtooth structure is fixed on a side plate 8 of the support assembly 2 of the steering column, and the sawtooth structure on the side surface of the locking part 11 is meshed with the clamping edge 14. The locking element 11 and the first spring element 10 are fixed to the cam disk by means of the locking pin 9, wherein the locking element 11 is in a clearance fit with the locking pin 9. The positioning block 12 of the cam plate 3 is fixedly connected with the locking pin 9 in various connection modes, as shown in the drawing, the positioning block 12 is provided with a second through hole 18 or a positioning groove, and the locking pin 9 is inserted into the second through hole 18 or the positioning groove and then connected in an interference mode or welded. The rear end of the locking pin 9 can also be fixedly connected with the positioning block 12 in a direct welding mode and the like. The first elastic element 10 is located between the locking element and the locking pin and acts to pretension the locking element. The serrations on both the locking member 11 and the rib 14 have a thickness such that they are more engaged with each other, which helps to improve the holding force.

An annular groove 19 is formed outside a central hole at the back of the cam plate 3, an annular groove 19 is formed on a bearing piece outside the outer pipe of the steering column, a second elastic element 13 is sleeved on a handle bolt 5 of the steering column, the second elastic element penetrates through a hole in a side plate of the support, one end of the second elastic element is arranged in the annular groove 19 at the back of the cam plate 3, and the other end of the second elastic element is arranged in the annular groove 19 on the bearing piece 7. The two ends of the second elastic piece 13 are arranged in the annular groove, so that the positioning is more accurate and firm. The annular recess behind the cam plate may be replaced by an annular projection over which the second resilient member is fitted in use.

As shown in fig. 6 and 7, a groove 15 is formed on one side of the rear surface of the locking member 11 without the saw teeth, the height and width of the groove 15 are the same as those of the positioning block 12, and the positioning block 12 is placed in the groove. When the positioning block is used, the positioning block is arranged in the groove, and the locking piece and the positioning block are better connected and fixed. When the handle is opened, the second elastic piece can eject the locking piece.

The first elastic piece and the second elastic piece of this application can choose the spring for use.

The specific using process is as follows:

when the handle was closed, the retaining member was pressed to the support assembly, and at this moment the band saw tooth limit of retaining member reaches the purpose of angle locking with the block arris sawtooth structure interlock cooperation on the curb plate of support assembly.

When the handle is opened, the locking part is separated from the clamping edge of the side plate of the bracket under the action of the second spring along with the cam plate, and the steering column realizes the adjusting function.

Claims

1. The utility model provides a device that improves retention is adjusted to car steering column angle which characterized in that: the locking device comprises a locking pin, a first elastic part, a locking part, a cam disc and a second elastic part, wherein a first through hole is formed in the middle of the locking part, one side face of the locking part is provided with a sawtooth structure, the side face of the cam disc is connected with a positioning block, the first elastic part is sleeved on the locking pin, the locking pin penetrates through the through hole in the locking part and then is fixedly connected with the positioning block, a clamping edge with the sawtooth structure is fixed on a side plate of a support assembly of the steering column, and the sawtooth structure on the side face of the locking part is meshed with the sawtooth structure of the clamping edge;

2. The device for improving the holding force of the angle adjustment of the steering column of the automobile according to claim 1, wherein: one side of the back of the locking part without the saw teeth is provided with a groove, and the positioning block is arranged in the groove.