CN212047555U

CN212047555U - Steering column of steering gear with adjustable height

Info

Publication number: CN212047555U
Application number: CN202020104621.5U
Authority: CN
Inventors: 李启海; 娄杨杰; 陈国灿
Original assignee: Zhengzhou Howell Electronic Science And Technology Co ltd
Current assignee: Zhengzhou Howell Electronic Science And Technology Co ltd
Priority date: 2020-01-17
Filing date: 2020-01-17
Publication date: 2020-12-01
Anticipated expiration: 2030-01-17

Abstract

The utility model discloses a steering column of a steering machine with adjustable height, which comprises a telescopic shaft mechanism and a locking mechanism, wherein the telescopic shaft mechanism comprises a fixed seat, a fixed shaft, a fixed outer protective tube, a sliding shaft and a sliding outer protective tube; the fixed outer protective pipe is sleeved outside the bell-shaped shell of the sliding shaft, and the lower part of the fixed outer protective pipe is fixed on the fixed seat; the sliding outer protective pipe is sleeved outside the fixed outer protective pipe; the sliding shaft is axially fixed with the sliding outer protective pipe; the locking mechanism comprises a locking shaft, a locking nut and a sliding groove, and the locking shaft is in sliding fit with the sliding groove and is clamped and positioned through the locking nut. The sliding shaft can slide up and down and rotate in the sliding outer protective pipe, and drives the fixed shaft to rotate together. When the locking nut is loosened, the pressure spring releases pressure to enable the sliding shaft and the sliding outer protective pipe to rise to a high position, and when an external force is applied to the sliding shaft, the sliding shaft can extrude the pressure spring to reduce the height of the steering column.

Description

Steering column of steering gear with adjustable height

Technical Field

The utility model belongs to the technical field of vehicle steering wheel, in particular to steering wheel steering column with adjustable height.

Background

Under the background of rapid development of scientific technology, various control machines have higher and higher requirements on the comfort of operators, and are currently used for controlling steering machine assemblies of agricultural machinery to steer, the height of a steering wheel on the steering machine is usually fixed and unchanged, and the positions of the steering wheel and a human body can be adjusted only in a front-back adjusting mode.

Disclosure of Invention

The utility model aims at the not enough of above-mentioned prior art, provide a steering column that can convenient adjustment direction machine height.

For solving the above technical problem, the utility model discloses a technical scheme is:

a steering column of a steering gear with adjustable height comprises a telescopic shaft mechanism and a locking mechanism, wherein the telescopic shaft mechanism comprises a fixed seat, a fixed shaft, a fixed outer protective pipe, a sliding shaft and a sliding outer protective pipe; the constraint structure comprises an inner spline arranged on the inner side of the bell-shaped shell and an outer spline arranged on the circumferential direction of the fixed shaft, and the inner spline is matched with the outer spline.

A pressure spring is arranged between the bottom surface of the inner side of the bell-shaped shell and the end surface of the fixed shaft; the fixed outer protective pipe is sleeved outside the bell-shaped shell of the sliding shaft, and the lower part of the fixed outer protective pipe is fixed on the fixed seat; the fixed outer protective pipe is axially fixed with the fixed shaft; the sliding shaft and the sliding outer protective pipe are axially fixed through a clamp spring, and a bearing is arranged on the lower side of the clamp spring.

The sliding outer protective pipe is sleeved outside the fixed outer protective pipe; the sliding shaft is axially fixed with the sliding outer protective pipe; the fixed shaft and the fixed outer protective pipe are axially fixed through a clamp spring, and a bearing is arranged on the upper side of the clamp spring.

The locking mechanism comprises a locking shaft, a locking nut and a sliding groove, the locking shaft is in threaded fit with the locking nut, the locking shaft is fixed on the sliding outer protective pipe and is in sliding fit with the sliding groove and clamped and positioned through the locking nut. But locking mechanism still includes criss-cross first swing arm and second swing arm, first swing arm, second swing arm all with the fixing base is articulated, and the articulated shaft of the two is parallel to each other, all be equipped with the spout on first swing arm, the second swing arm. And a gasket is arranged between the first swing arm and the second swing arm.

The locking shaft is fixed on the sliding outer protective pipe, the first swing arm and the second swing arm can rotate around the hinged shaft, the gasket is arranged on the locking shaft and clamped between the first swing arm and the second swing arm, when the sliding outer protective pipe slides up and down, the locking shaft slides along the swing arms, the locking nut squeezes the first swing arm and the second swing arm when being screwed, and the locking shaft is prevented from sliding in the first swing arm and the second swing arm by friction force, so that the sliding outer protective pipe is locked.

The utility model has the advantages that: in the steering column, the sliding shaft can slide up and down on the upper end of the fixed shaft, the sliding outer protective pipe can slide along with the sliding shaft, and the sliding shaft can rotate in the sliding outer protective pipe without dead angles and drive the fixed shaft to rotate together. The pressure spring is arranged between the end faces of the bell-shaped shell and the fixed shaft, when the locking nut is loosened, the pressure spring releases pressure to enable the sliding shaft and the sliding outer protective pipe to rise to a high position, and when an external force is applied to the sliding shaft, the sliding shaft can extrude the pressure spring to reduce the overall height of the steering column. After the height is adjusted, the relative position of the sliding shaft and the fixed shaft can be fixed by screwing the locking nut.

Drawings

FIG. 1 is a schematic structural view of an embodiment;

fig. 2 is a right side view of fig. 1.

Detailed Description

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

As shown in fig. 1 to 2, a steering column of a steering gear box with adjustable height comprises a telescopic shaft mechanism and a locking mechanism, wherein the telescopic shaft mechanism comprises a fixed seat 1, a fixed shaft 2, a fixed outer sheath 3, a sliding shaft 4 and a sliding outer sheath 5, the sliding shaft 4 is coaxially opposite to the fixed shaft 2, the lower end of the sliding shaft 4 is provided with a bell-shaped shell 41, the bell-shaped shell 41 is sleeved outside the fixed shaft 2, and is provided with a constraint structure for limiting the relative rotation of the two; the constraint structure comprises an internal spline 42 arranged on the inner side of the outer shell 41 and an external spline 21 arranged on the circumferential direction of the fixed shaft 2, wherein the internal spline 42 is matched with the external spline 21.

A pressure spring 6 is arranged between the bottom surface of the inner side of the outer shell 41 and the end surface of the fixed shaft 2; the fixed outer protective pipe 3 is sleeved outside the outer side of the outer shell 41 of the sliding shaft 4, and the lower part of the fixed outer protective pipe is fixed on the fixed seat 1; the fixed outer protective pipe 3 is axially fixed with the fixed shaft 2; the sliding shaft 4 and the sliding outer protective pipe 5 are axially fixed through a clamp spring 13, and a bearing 14 is arranged on the lower side of the clamp spring 13.

The sliding outer protective pipe 5 is sleeved outside the fixed outer protective pipe 3; the sliding shaft 4 and the sliding outer protective pipe 5 are axially fixed; the fixed shaft 2 and the fixed outer protective pipe 3 are axially fixed through a clamp spring 13, and a bearing 14 is arranged on the upper side of the clamp spring 13.

Locking mechanism includes locking axle 7, lock nut 8 and spout 12, locking axle 7 and the cooperation of lock nut 8 screw thread, locking axle 7 is fixed on the outer pillar 5 that slides, its with spout 12 sliding fit presss from both sides tight location through lock nut 8. Locking mechanism still includes first swing arm 9 and second swing arm 10 that can intersect, first swing arm 9, second swing arm 10 all with fixing base 1 is articulated, and the articulated shaft of the two is parallel to each other, all be equipped with spout 12 on first swing arm 9, the second swing arm 10. A gasket 11 is arranged between the first swing arm 9 and the second swing arm 10.

Locking shaft 7 is fixed on slip outer pillar 5, first swing arm 9, second swing arm 10 can rotate around the articulated shaft, gasket 11 dress is on locking shaft 7 and is pressed from both sides in the middle of first swing arm 9 and second swing arm 10, when slip outer pillar 5 slides from top to bottom, locking shaft 7 follows in the swing arm and slides, extrude first swing arm 9 and second swing arm 10 when lock nut 8 screws up, lean on frictional force to prevent locking shaft 7 to slide in first swing arm 9 and second swing arm 10, thereby realize the locking of slip outer pillar 5.

When the steering column lifting device is used, the steering column is lifted as required, the locking nut 8 is loosened, the pressure spring 6 releases pressure to enable the sliding shaft 4 and the sliding outer protective pipe 5 to ascend to the highest position, and when the steering column is lowered as required, the sliding shaft 4 can extrude the pressure spring 6 to lower the overall height of the steering column when external force is applied to the sliding shaft 4. After the height is adjusted, the relative position of the sliding shaft 4 and the fixed shaft 2 can be fixed by screwing the locking nut 8.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, but rather is described in the embodiments and descriptions herein to illustrate the principles of the invention and that various changes and modifications may be made without departing from the spirit and scope of the invention, all of which fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents.

In the description of the present invention, it should be understood that the terms "front", "back", "left", "right", "center", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the scope of the present invention.

Claims

1. The utility model provides a steering column of steering wheel with adjustable height, includes telescopic shaft mechanism and locking mechanism, its characterized in that: the telescopic shaft mechanism comprises a fixed seat, a fixed shaft, a fixed outer protective pipe, a sliding shaft and a sliding outer protective pipe, the sliding shaft is coaxially opposite to the fixed shaft, the lower end of the sliding shaft is provided with a bell-shaped shell, the bell-shaped shell is sleeved on the outer side of the fixed shaft, and a constraint structure for limiting the relative rotation of the bell-shaped shell and the fixed shaft is arranged; a pressure spring is arranged between the bottom surface of the inner side of the bell-shaped shell and the end surface of the fixed shaft; the fixed outer protective pipe is sleeved outside the bell-shaped shell of the sliding shaft, and the lower part of the fixed outer protective pipe is fixed on the fixed seat; the fixed outer protective pipe is axially fixed with the fixed shaft; the sliding outer protective pipe is sleeved outside the fixed outer protective pipe; the sliding shaft is axially fixed with the sliding outer protective pipe; the locking mechanism comprises a locking shaft, a locking nut and a sliding groove, the locking shaft is in threaded fit with the locking nut, the locking shaft is fixed on the sliding outer protective pipe and is in sliding fit with the sliding groove and clamped and positioned through the locking nut.

2. The height adjustable steering column of claim 1, wherein: the constraint structure comprises an inner spline arranged on the inner side of the bell-shaped shell and an outer spline arranged on the circumferential direction of the fixed shaft, and the inner spline is matched with the outer spline.

3. The height adjustable steering column of claim 1, wherein: but locking mechanism still includes criss-cross first swing arm and second swing arm, first swing arm, second swing arm all with the fixing base is articulated, and the articulated shaft of the two is parallel to each other, all be equipped with the spout on first swing arm, the second swing arm.

4. The height adjustable steering column of claim 3, wherein: and a gasket is arranged between the first swing arm and the second swing arm.

5. The height adjustable steering column of claim 1, wherein: the sliding shaft and the sliding outer protective pipe are axially fixed through a clamp spring, and a bearing is arranged on the lower side of the clamp spring.

6. The height adjustable steering column of claim 5, wherein: the fixed shaft and the fixed outer protective pipe are axially fixed through a clamp spring, and a bearing is arranged on the upper side of the clamp spring.