CN106476965B

CN106476965B - Screw-in extrusion adjusting type front fork

Info

Publication number: CN106476965B
Application number: CN201610874034.2A
Authority: CN
Inventors: 杨洁亮
Original assignee: Tianjin Zhongxing Bang Science And Technology Development Co ltd
Current assignee: Tianjin Zhongxing Bang Science and Technology Development Co.,Ltd.
Priority date: 2016-09-30
Filing date: 2016-09-30
Publication date: 2021-03-16
Anticipated expiration: 2036-09-30
Also published as: CN106476965A

Abstract

The invention relates to a precession extrusion regulation type front fork, wherein a fork leg is of an air spring structure, an adjusting structure is arranged on the fork leg, an outer sleeve is positioned above an inner sleeve and screwed on the inner sleeve, a sleeve is fixedly arranged on a fork barrel, the inner sleeve and the sleeve both extend along the lateral side to form an extension plate, a threaded hole is formed in the extension plate on the inner sleeve, a through hole is formed in the extension plate on the sleeve, a bearing is arranged in the through hole, a screw rod is respectively in threaded connection and matching with the threaded hole in the extension plate of the inner sleeve and is fixed with an inner ring of the bearing on the extension plate of the sleeve; the upper end of the outer sleeve extends radially inwards to form an extrusion cap, an extrusion unit is arranged on the extrusion cap around the piston rod, and the extrusion unit is positioned in the inner cavity of the outer sleeve. The invention can adjust the shock absorption soft and hard degree of the front fork to adapt to various road surfaces, thereby improving the riding comfort level and protecting the safety of riders; meanwhile, the device has the advantages of simple structure, low manufacturing cost, obvious effect and the like.

Description

Screw-in extrusion adjusting type front fork

Technical Field

The invention belongs to the field of bicycles, and particularly relates to a precession extrusion adjustment type front fork.

Background

Along with the promotion of people's life theory, ride and be accepted by more and more people, people realize green trip or the purpose of body building through riding. The bicycle front fork is an important part in a bicycle structure, the upper end of the bicycle front fork is connected with a handlebar, the lower end of the bicycle front fork is matched with a front wheel to form a front wheel structure with a guiding function, and the existing middle-high end bicycle front fork generally has a shock absorbing function and is used for improving the comfort level of a rider riding on a bumpy road surface. However, the front fork has many problems in the application process, the front fork can meet various road surfaces in the riding process, the bumping degrees are different, so that the impact on the front fork is different, and in order to cope with various impacts, the hardness of the front fork for shock absorption is often adjusted according to the actual situation so as to prevent the bottom hitting phenomenon of the front fork; when the bicycle suddenly jolts to a large extent, the phenomenon that the bicycle head is jumped or bounced due to too fast rebound of the front fork often occurs, and danger is brought to a rider.

Disclosure of Invention

Accordingly, the present invention is directed to a front fork with a screw-in and squeeze adjustment to solve the above problems.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

the precession extrusion adjustment type front fork comprises a vertical pipe, a connecting beam and fork legs, wherein the lower end of the vertical pipe is vertically and fixedly connected with the middle position of the connecting beam, the fork legs are vertically and fixedly connected with two ends of the connecting beam, the vertical pipe and the fork legs are respectively positioned on two sides of the connecting beam, the fork legs are of an air spring structure and comprise piston rods and fork cylinders, and the upper end parts of the piston rods are fixed with the end parts of the connecting beam;

the fork legs are provided with adjusting structures, each adjusting structure comprises an inner sleeve, an outer sleeve, a sleeve, an extension plate, a screw and an extrusion unit, the inner sleeve is sleeved on the piston rod, the outer sleeve is positioned above the inner sleeve and screwed on the inner sleeve, the sleeve is fixedly arranged on the fork barrel, the inner sleeve and the sleeve extend along the lateral direction to form the extension plate, the extension plate on the inner sleeve is provided with a threaded hole, the extension plate on the sleeve is provided with a through hole, a bearing is arranged in the through hole, the screw is respectively in threaded connection and matching with the threaded hole on the extension plate of the inner sleeve and is fixed with the inner ring of the bearing on the extension plate of the;

the outer sleeve upper end extends radially inwards to form an extrusion cap, an extrusion unit is arranged on the extrusion cap around the piston rod and is positioned in the outer sleeve inner cavity, and the inner diameter of the extrusion cap is smaller than that of the inner sleeve and larger than that of the piston rod.

Further, the extrusion unit is an elastic rubber ring.

Further, the extrusion unit is an elastic rubber strip.

Furthermore, the inner sleeve is arranged at the position of the piston rod close to the fork cylinder.

Further, the extension plate on the inner sleeve is positioned at the lower end part of the inner sleeve.

Furthermore, a fork bridge of an arc-shaped beam structure is arranged between the two fork cylinders, two end parts of the fork bridge are respectively connected with the upper end parts of the two fork cylinders, and the sleeve is positioned below the upper end parts of the fork cylinders.

When the precession extrusion adjustment type front fork faces various road surfaces, the extrusion unit in the outer sleeve can generate deformation with different degrees through the interaction of the inner sleeve and the outer sleeve by adjusting the adjustment structure, so that the piston rod is wrapped with different degrees, the resistance on the piston rod in the telescopic stroke is different, the shock absorption soft and hard degree of the front fork is adjusted, the front fork is suitable for various road surfaces, the riding comfort level is improved, and the safety of a rider is protected; meanwhile, the height of the inner sleeve and the outer sleeve on the piston rod can be changed by adjusting the screw in the adjusting structure, so that the maximum stroke amount of the front fork in the telescopic rebound is controlled; compared with the prior front fork soft and hard adjusting structure, the precession extrusion adjusting type front fork has the advantages of simple structure, low manufacturing cost, obvious effect and the like.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of a precession extrusion-adjustable front fork of the present invention;

FIG. 2 is a schematic diagram of the inner sleeve and the outer sleeve.

Description of reference numerals:

1. the device comprises a vertical pipe, a connecting beam 2, a piston rod 3, a fork cylinder 4, a fork bridge 5, an inner sleeve 6, an outer sleeve 7, a sleeve 8, an extension plate 9, a screw rod 10 and an extrusion cap 11.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

the precession extrusion adjustment type front fork comprises a vertical pipe 1, a connecting beam 2 and fork legs as shown in the figure, wherein the lower end of the vertical pipe 1 is vertically and fixedly connected with the middle position of the connecting beam 2, the fork legs are vertically and fixedly connected with two ends of the connecting beam 2, the vertical pipe 1 and the fork legs are respectively positioned on two sides of the connecting beam 2, the fork legs are of an air spring structure and comprise a piston rod 3 and a fork cylinder 4, and the upper end part of the piston rod 3 is fixed with the end part of the connecting beam 2;

the fork legs are provided with adjusting structures, each adjusting structure comprises an inner sleeve 6, an outer sleeve 7, a sleeve 8, an extension plate 9, a screw rod 10 and an extrusion unit, the inner sleeve 6 is sleeved on the piston rod 3, the outer sleeve 7 is positioned above the inner sleeve 6 and screwed on the inner sleeve 6, the sleeve 8 is fixedly arranged on the fork barrel 4, the inner sleeve 6 and the sleeve 8 both extend along the lateral direction to form the extension plate 9, a threaded hole is formed in the extension plate 9 on the inner sleeve 6, a through hole is formed in the extension plate 9 on the sleeve 8, a bearing is arranged in the through hole, the screw rods 10 are respectively in threaded connection and matching with the threaded holes in the extension plate 9 of the inner sleeve 6 and are fixed with the inner ring of the bearing on the extension plate 9 of;

the upper end of the outer sleeve 7 extends inwards in the radial direction to form an extrusion cap 11, an extrusion unit is arranged on the extrusion cap 11 around the piston rod 3 and is positioned in the inner cavity of the outer sleeve 7, and the inner diameter of the extrusion cap 11 is smaller than that of the inner sleeve 6 and larger than that of the piston rod 3.

In the precession extrusion regulation formula front fork, the extrusion unit is elastic rubber ring.

In the screw extrusion adjusting type front fork, the extrusion unit can also be an elastic rubber strip.

In the precession extrusion regulation type front fork, the inner sleeve 6 is arranged at the position of the piston rod 3 close to the fork barrel 4.

In the screw-in extrusion-adjustment type front fork, the extension plate 9 on the inner sleeve 6 is positioned at the lower end part of the inner sleeve 6.

In the screw-in extrusion regulation type front fork, a fork bridge 5 of an arc-shaped beam structure is arranged between two fork cylinders 4, two end parts of the fork bridge 5 are respectively connected with the upper end parts of the two fork cylinders 4, and a sleeve 8 is positioned below the upper end parts of the fork cylinders 4.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a precession extrusion regulation formula front fork, includes riser (1), tie-beam (2) and fork leg, riser (1) lower extreme and the perpendicular fixed connection of tie-beam (2) middle part position, the equal perpendicular fixedly connected with fork leg in tie-beam (2) both ends, riser (1) and fork leg are located the both sides of tie-beam (2) respectively, its characterized in that: the fork legs are of air spring structures and comprise piston rods (3) and fork cylinders (4), and the upper end parts of the piston rods (3) are fixed with the end parts of the connecting beams (2);

the fork legs are respectively provided with an adjusting structure, the adjusting structure comprises an inner sleeve (6), an outer sleeve (7), a sleeve (8), an extension plate (9), a screw (10) and an extrusion unit, the inner sleeve (6) is sleeved on the piston rod (3), the outer sleeve (7) is positioned above the inner sleeve (6) and screwed on the inner sleeve (6), the sleeve (8) is fixedly arranged on the fork barrel (4), the inner sleeve (6) and the sleeve (8) both extend along the lateral side to form the extension plate (9), wherein the extension plate (9) on the inner sleeve (6) is provided with a threaded hole, the extension plate (9) on the sleeve (8) is provided with a through hole, a bearing is arranged in the through hole, the screw rod (10) is respectively in threaded connection and matching with the threaded hole on the extension plate (9) of the inner sleeve (6), the screw rod is fixed with the bearing inner ring on the extension plate (9) of the sleeve (8), and the screw rod (10) is parallel to the fork cylinder (4);

the upper end of the outer sleeve (7) extends radially inwards to form an extrusion cap (11), an extrusion unit is arranged on the extrusion cap (11) around the piston rod (3), the extrusion unit is positioned in the inner cavity of the outer sleeve (7), and the inner diameter of the extrusion cap (11) is smaller than that of the inner sleeve (6) and larger than that of the piston rod (3).

2. The precession extrusion adjustment front fork of claim 1, wherein: the extrusion unit is an elastic rubber ring.

3. The precession extrusion adjustment front fork of claim 1, wherein: the extrusion unit is an elastic rubber strip.

4. The precession extrusion adjustment front fork of claim 1, wherein: the inner sleeve (6) is arranged at the position of the piston rod (3) close to the fork cylinder (4).

5. The precession extrusion adjustment front fork of claim 1, wherein: the extension plate (9) on the inner sleeve (6) is positioned at the lower end part of the inner sleeve (6).

6. The precession extrusion adjustment front fork of claim 1, wherein: a fork bridge (5) with an arc-shaped beam structure is arranged between the two fork cylinders (4), two end parts of the fork bridge (5) are respectively connected with the upper end parts of the two fork cylinders (4), and the sleeve (8) is positioned below the upper end parts of the fork cylinders (4).