CN214036647U

CN214036647U - Two-chamber hierarchical damping structure of nitrogen gas bumper shock absorber

Info

Publication number: CN214036647U
Application number: CN202120032136.6U
Authority: CN
Inventors: 周向龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-06
Filing date: 2021-01-06
Publication date: 2021-08-24
Anticipated expiration: 2031-01-06

Abstract

The utility model provides a nitrogen gas bumper shock absorber two-chamber hierarchical damping structure, including bumper shock absorber body and nitrogen gas jar, the upper end of nitrogen gas jar is equipped with the blanking cover, the lower extreme is equipped with aerifys the blanking cover, the inside of nitrogen gas jar is equipped with floating piston, floating piston cuts apart into liquid reserve room and gas receiver with nitrogen gas jar inner chamber, the bumper shock absorber body is the bilayer structure that inner tube and urceolus are constituteed, the liquid reserve room has between inner tube and the urceolus, bumper shock absorber body lower extreme is equipped with the director, be equipped with the piston in the inner tube, the piston rod of bumper shock absorber body passes director and piston fixed connection, be equipped with decompression pressure release hole and resilience pressure release hole on the piston, decompression pressure release hole covers has lower valve block, resilience pressure release hole coats and is stamped the upper valve block, the inner tube upper end is equipped with the inner tube bottom valve, the inner tube surface is from last to being equipped with first overflow hole, second overflow hole and third overflow hole respectively down, the utility model discloses can make the car at jolt, The bumpy road surface has good softness and stronger supporting force and shock absorption capacity on the road surface with larger fluctuation.

Description

Two-chamber hierarchical damping structure of nitrogen gas bumper shock absorber

Technical Field

The utility model relates to an automobile shock absorber field, especially a nitrogen gas shock absorber two-chamber stage damping structure.

Background

The bumper shock absorber is a car suspension control part, restraines the automobile body vibrations and the beat that bring because of the road surface is uneven, and present bumper shock absorber is the invariable settlement of damping mostly, and the damping dynamics is invariable when the bumper shock absorber is tensile or compression speed unchangeable promptly, just so causes in fine and broken jolt road surface car compliance not enough, and the great road surface shock attenuation holding power of jolting of undulation is not enough again, can't reach the compromise of travelling comfort and high holding power. The damping requirements of complex terrains cannot be met.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide a nitrogen gas bumper shock absorber two-chamber hierarchical damping structure to solve the problem that proposes in the above-mentioned technical background.

The purpose of the utility model is realized through the following technical scheme:

a double-cavity graded damping structure of a nitrogen shock absorber comprises a shock absorber body and a nitrogen tank, wherein the upper end of the nitrogen tank is provided with an upper plug cover, the lower end of the nitrogen tank is provided with an inflatable plug cover, a floating piston is arranged inside the nitrogen tank, the floating piston divides the inner cavity of the nitrogen tank into a liquid storage chamber and a gas storage chamber, the shock absorber body is of a double-layer structure consisting of an inner cylinder and an outer cylinder, the liquid storage chamber is arranged between the inner cylinder and the outer cylinder, the lower end of the shock absorber body is provided with a guider, a piston is arranged in the inner cylinder, a piston rod of the shock absorber body penetrates through the guider to be fixedly connected with the piston, the piston is provided with a pressure reducing and relieving hole and a rebound pressure relieving hole, the pressure reducing and releasing hole is covered with a lower valve plate, the rebound pressure releasing hole is covered with an upper valve plate, the upper end of the inner cylinder is provided with an inner cylinder bottom valve, the surface of the inner cylinder is provided with a first overflow hole, a second overflow hole and a third overflow hole from top to bottom respectively, and the liquid storage cavity is communicated with the liquid storage chamber through a hydraulic pipe.

Furthermore, first overflow hole, second overflow hole and third overflow hole set up along inner tube equidistance interval, and the distance of first overflow hole to inner tube top is greater than the distance between piston bottom and the inner tube top when the piston moved to the inner tube top, and the distance between third overflow hole to inner tube bottom is greater than the distance between piston top and the inner tube bottom when the piston moved to the inner tube bottom.

Furthermore, an adjusting knob is arranged on the hydraulic pipe.

Furthermore, the upper end of the shock absorber body is provided with an upper hanging ring.

Furthermore, the lower end of the piston rod is provided with a lower hanging ring.

Furthermore, a bearing is arranged on the lower hanging ring.

The utility model has the advantages that: the utility model discloses a with the bilayer structure of bumper shock absorber body design for inner tube and urceolus to set up first overflow hole, second overflow hole and third overflow hole on the inner tube, hydraulic oil circulates between bumper shock absorber body and nitrogen gas jar through first overflow hole, second overflow hole and third overflow hole, makes the bumper shock absorber body can provide the damping holding power that has the change, thereby make the car in the in-process of traveling, jolt road surface in small, has good compliance, has stronger holding power on the great road surface of fluctuation.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

FIG. 3 is a schematic structural view of the piston of the present invention moving to the upper end of the inner cylinder;

fig. 4 is a schematic view of the mechanism for moving the piston between the first overflow hole and the third overflow hole according to the present invention.

In the figure, 1-piston rod, 2-guider, 3-liquid storage cavity, 4-first overflow hole, 5-second overflow hole, 6-third overflow hole, 7-piston, 8-outer cylinder, 9.1-upper valve plate, 9.2-lower valve plate, 10.1-pressure reduction and pressure relief hole, 10.2-rebound pressure relief hole, 11-inner cylinder, 12-upper lifting ring, 13-inner cylinder bottom valve, 14-hydraulic pipe, 15-adjusting knob, 16-upper blocking cover, 17-liquid storage chamber, 18-floating piston, 19-air storage chamber, 20-inflation blocking cover, 21-lower lifting ring and 22-bearing.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.

It should be noted that the drawings provided in the following embodiments are only for illustrating the basic concept of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the form, amount and ratio of the components in actual implementation may be changed at will, and the layout of the components may be more complicated.

Example (b):

a double-cavity graded damping structure of a nitrogen shock absorber is disclosed, please refer to attached figures 1 and 2, and comprises a shock absorber body and a nitrogen tank, wherein the upper end of the nitrogen tank is provided with an upper blocking cover 16, the lower end of the nitrogen tank is provided with an inflatable blocking cover 20, the interior of the nitrogen tank is provided with a floating piston 18, the inner cavity of the nitrogen tank is divided into a liquid storage chamber 17 and an air storage chamber 19 by the floating piston 18, the shock absorber body is of a double-layer structure consisting of an inner cylinder 11 and an outer cylinder 8, the liquid storage chamber 3 is arranged between the inner cylinder 11 and the outer cylinder 8, the lower end of the shock absorber body is provided with a guider 2, the inner cylinder 11 is internally provided with a piston 7, a piston rod 1 of the shock absorber body penetrates through the guider 2 to be fixedly connected with the piston 7, the piston 7 is provided with a pressure reducing and releasing hole 10.1 and a rebound pressure releasing hole 10.2, the pressure reducing and releasing hole 10.1 is covered with a lower valve plate 9.2, the rebound pressure releasing hole 10.2 is covered with an upper valve plate 9.1, the upper end of the inner cylinder 11 is provided with an inner cylinder bottom valve 13, the inner tube surface is from last to being equipped with first overflow hole 4 down respectively, second overflow hole 5 and third overflow hole 6, liquid storage cavity 3 passes through hydraulic pressure pipe 14 and liquid storage chamber 17 intercommunication, first overflow hole 4, second overflow hole 5 and third overflow hole 6 set up along inner tube 11 equidistance interval, and the distance of first overflow hole 4 to inner tube 11 top is greater than the distance between piston 7 bottom and the inner tube 11 top when piston 7 moves to inner tube 11 top, the distance of third overflow hole 6 to inner tube 11 bottom is greater than the distance between piston 7 top and the inner tube 11 bottom when piston 7 moves to inner tube 11 bottom, be equipped with the adjustment knob 15 that is used for adjusting the hydraulic oil flow on the hydraulic pressure pipe 14, bumper shock absorber body upper end and lower extreme are equipped with rings 12 and lower rings 21 respectively, be equipped with bearing 22 on the lower rings 21.

More specifically, as shown in fig. 1, when the piston 7 is located at the lower end of the inner cylinder 11 and is forced to move upward, the lower portion of the piston is under negative pressure, hydraulic oil pushes the lower valve plate 9.2 open under the action of pressure, and the hydraulic oil enters the lower portion of the piston through the lower pressure relief hole 10.1. At the moment, the compression damping value is larger, when the piston 7 continues to move upwards and passes through the position of the third overflow hole 6, hydraulic oil on the upper part of the piston is discharged out of the inner cylinder 11 through the second overflow hole 5 and the first overflow hole 4, a part of hydraulic oil enters the lower part of the piston 7 through the third overflow hole 6 to form circulation, the pressure above the piston 7 is in the minimum state, when the piston 7 continues to pass through the second overflow hole 5 upwards, the pressure on the upper part of the inner cylinder 11 is increased, the hydraulic oil is discharged out of the inner cylinder 11 through the first overflow hole 4, a part of hydraulic oil enters the lower part of the piston through the second overflow hole 5 and the third overflow hole 6 to form circulation, the compression damping above the piston is in the smaller state, when the piston passes through the first overflow hole 4, the pressure on the upper part of the piston 7 is increased, when the pressure exceeds the damping value set by the lower valve plate 9.2, the hydraulic oil props up the lower valve plate 9.2 and enters the lower part of the piston 7 through the decompression hole 10.1, at the moment, the piston 7 has the largest compression damping, and the automobile can obtain the largest decompression supporting force.

Further, referring to fig. 3, when the piston 7 is located at the uppermost position of the inner cylinder 11 and is forced to move downwards, the upper part of the piston 7 is under negative pressure, under the action of the negative pressure, hydraulic oil pushes open the upper valve plate 9.1, the hydraulic oil enters the upper part of the piston 7 through the rebound relief hole 10.2, the negative pressure at the upper part is larger at this moment, the downward extension damping of the piston 7 is larger, when the piston 7 continues to move downwards and exceeds the first overflow hole 4, the hydraulic oil is discharged out of the inner cylinder 11 through the second overflow hole and the third overflow hole 6, a part of the hydraulic oil enters the upper part of the piston 7 through the first overflow hole 4 to form circulation, the pressure below the piston 7 is at the minimum state at this moment, when the piston 7 continues to move downwards and passes through the second overflow hole 5, the pressure at the lower part of the inner cylinder 11 continues to increase, the hydraulic oil is discharged out of the inner cylinder 11 through the third overflow hole 6, a part of the hydraulic oil enters the upper part of the piston 11 through the first overflow hole 4 and the second overflow hole 5, and (3) circulation is formed, the pressure below the piston 7 is in a small state at the moment, when the piston 7 continues to move downwards to pass through the third overflow hole 6, the pressure below the piston 7 is increased, when the pressure exceeds the damping value set by the upper valve plate 9.1, the upper valve plate 9.1 is jacked open by hydraulic oil, and the hydraulic oil enters the upper part of the piston through the rebound pressure relief hole 10.2, wherein the pressure below the piston 7 is maximum at the moment.

Therefore, referring to fig. 4, when the piston moves among the first overflow hole 4, the second overflow hole 5, and the third overflow hole 6, the extension and compression of the piston 7 are all at the minimum damping force, so that the vehicle can obtain a more comfortable supporting force, when the piston is located between the guide 2 and the third overflow hole 6, the piston 7 obtains a greater rebound damping force, so that the bouncing energy of the vehicle can be ideally controlled, and when the piston 7 is located between the first overflow hole 4 and the inner cylinder bottom valve 13, the compression and rebound of the piston 7 are all at the maximum rebound damping force, so that the vehicle can obtain a strong supporting force.

To sum up, the utility model discloses a with the design of bumper shock absorber body for the bilayer structure of inner tube 11 and urceolus 8, and set up first overflow hole 4 on inner tube 11, second overflow hole 5 and third overflow hole 6, hydraulic oil passes through first overflow hole 4, second overflow hole 5 and third overflow hole 6 circulate between bumper shock absorber body and nitrogen gas jar, make the bumper shock absorber body can provide the damping holding power that has the change, thereby make the car at the in-process of traveling, jolt road surface in small, have good compliance, have stronger holding power on the great road surface of fluctuation.

The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims

1. The utility model provides a hierarchical damping structure of nitrogen gas bumper shock absorber double-chamber, includes bumper shock absorber body and nitrogen gas jar, the upper end of nitrogen gas jar is equipped with blanking cap (16), and the lower extreme is equipped with aerifys blanking cap (20), and the inside of nitrogen gas jar is equipped with floating piston (18), floating piston (18) are cut apart into liquid reserve room (17) and gas receiver (19) with the nitrogen gas jar inner chamber, a serial communication port, the bumper shock absorber body is the bilayer structure of inner tube (11) and urceolus (8) constitution, has liquid reserve chamber (3) between inner tube (11) and urceolus (8), and bumper shock absorber body lower extreme is equipped with director (2), is equipped with piston (7) in inner tube (11), and piston rod (1) of bumper shock absorber body pass director (2) with piston (7) fixed connection is equipped with decompression pressure release hole (10.1) and resilience pressure release hole (10.2) on piston (7), decompression pressure release hole (10.1) cover has lower valve block (9.2), rebound pressure release hole (10.2) coats and is stamped upper valve piece (9.1), and inner tube (11) upper end is equipped with inner tube bottom valve (13), and inner tube (11) surface is from last to being equipped with first overflow hole (4), second overflow hole (5) and third overflow hole (6) down respectively, and liquid reserve chamber (3) are through hydraulic pressure pipe (14) and liquid reserve room (17) intercommunication.

2. The nitrogen damper dual-chamber staged damping structure of claim 1, wherein the first overflow hole (4), the second overflow hole (5) and the third overflow hole (6) are arranged at equal intervals along the inner cylinder (11), the distance from the first overflow hole (4) to the top of the inner cylinder (11) is greater than the distance from the bottom of the piston (7) to the top of the inner cylinder (11) when the piston (7) moves to the top of the inner cylinder (11), and the distance from the third overflow hole (6) to the bottom of the inner cylinder (11) is greater than the distance from the top of the piston (7) to the bottom of the inner cylinder (11) when the piston (7) moves to the bottom of the inner cylinder (11).

3. The nitrogen damper double-chamber staged damping structure as recited in claim 1, wherein the hydraulic pipe (14) is provided with an adjusting knob (15).

4. The nitrogen damper double-chamber staged damping structure as recited in claim 1, wherein an upper suspension ring (12) is provided at the upper end of the damper body.

5. The double-cavity graded damping structure of the nitrogen shock absorber as claimed in claim 1, wherein the lower end of the piston rod (1) is provided with a lower suspension ring (21).

6. The nitrogen damper double-chamber staged damping structure as recited in claim 5, wherein the lower suspension ring (21) is provided with a bearing (22).