CN211059277U

CN211059277U - Inverted shock absorber

Info

Publication number: CN211059277U
Application number: CN201922289308.3U
Authority: CN
Inventors: 毕倩
Original assignee: Furith Jiangsu Auto Parts Co ltd
Current assignee: Furith Jiangsu Auto Parts Co ltd
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2020-07-21
Anticipated expiration: 2029-12-18

Abstract

The utility model provides an inversion formula bumper shock absorber relates to bumper shock absorber technical field, including the inner tube, urceolus and bobbin base, the inner tube cover establish in the urceolus and with urceolus swing joint, the sealed urceolus of bobbin base, the inner tube tip sets up the pole head, is provided with the liner system between urceolus and the inner tube, wears to establish a piston rod in urceolus and the inner tube, and piston rod one end is fixed to the urceolus bobbin base through the nut, and the piston is connected to the other end, the piston is placed in the inner tube, and the piston afterbody is connected with the piston valve, the piston upper end is provided with floating piston, and floating piston sets up at least one end O shape circle, O shape circle closely laminates to the cylinder wall.

Description

Inverted shock absorber

Technical Field

The utility model relates to a bumper shock absorber technical field, concretely relates to inversion formula bumper shock absorber.

Background

At present, the shock absorber is generally a hydraulic telescopic tube type shock absorber. The device can be divided into a positive type front shock absorber and an inverted type front shock absorber according to the loading position of the outer pipe; the outer tube of the positive front shock absorber is arranged at the lower part of the shock absorber and is connected with the wheel shaft; the outer tube of the inverted front shock absorber is arranged on the upper part of the shock absorber and is connected with a steering yoke plate of the motorcycle. The front shock absorber of the motorcycle mainly comprises an outer tube, an inner tube, a piston rod, a shock absorbing spring, hydraulic oil and the like. At present, front shock absorbers of pedal motorcycles or pedal electric vehicles are all positive shock absorbers, while reverse front shock absorbers are widely applied to riding type vehicles, and are particularly mainly configured on performance vehicles such as racing cars, super sports cars or street cars.

The positive front shock absorber is characterized in that: the structure is relatively simple, the maintenance and the disassembly are easy, and the manufacturing cost is relatively low; however, the strength of the front shock absorber is relatively low (after the inner pipe of the precision steel pipe on the upper part of the shock absorber is clamped by the steering yoke plate of the motorcycle, the clamping part is easy to be damaged by clamping and fatigue fracture, and the cast outer pipe is easy to be fractured under the action of external force), and the unsprung mass of the shock absorber is relatively heavy (the reaction is relatively less and sensitive).

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a novel inversion type shock absorber which can solve the technical problem in the prior art.

The utility model discloses a following technical scheme realizes: the utility model provides an inversion formula bumper shock absorber, includes the inner tube, urceolus and bobbin base, the inner tube cover establish in the urceolus and with urceolus swing joint, the sealed urceolus of bobbin base, the inner tube tip sets up the pole head, is provided with the liner system between urceolus and the inner tube, wears to establish a piston rod in urceolus and the inner tube, and piston rod one end is fixed to the urceolus bobbin base through the nut, and the other end connects the piston, the piston is placed in the inner tube, and the piston afterbody is connected with the piston valve, the piston upper end is provided with floating piston, and floating piston sets up at least one end O shape circle, O shape circle closely laminates to the.

Preferably, the bushing system comprises two upper bushings and a lower bushing, the upper and lower bushings are both placed between the inner cylinder and the outer cylinder, a gap is reserved between the upper and lower bushings, and the gap is filled with lubricating oil.

Preferably, a pipe orifice at the upper end of the outer cylinder is provided with a rubber sealing ring, and the rubber sealing ring is attached to the inner cylinder.

Preferably, the outer cylinder is provided with a high-elasticity buffer block close to the cylinder bottom.

Preferably, the outer surface of the inner cylinder is plated with hard chromium.

Preferably, the piston valve is a double-sided adjustable valve plate type inclined damping hole valve system.

Compared with the prior art, the utility model discloses the bumper shock absorber sets up inner tube and urceolus, and the inner tube cover is established on the urceolus, and inner tube upper end has set up piston and floating piston, and floating piston one side society has high-pressure nitrogen gas, and piston rod one end is fixed to the bobbin base of urceolus, and under the effect of high atmospheric pressure, floating piston can carry out free slip to the change of the oil pocket volume that produces when compensating shock absorber is tensile/compressed, can be more even when making fluid flow through the valve body damping hole, more stable, more smooth and easy.

Drawings

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

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

FIG. 3 is a schematic view of the inner barrel structure.

In the figure: 1. an inner barrel; 2. an outer cylinder; 3. a club head; 4. a cylinder bottom; 5. a nut; 6. a high-elasticity buffer block; 7. an upper bushing; 8. a lower bushing; 9. lubricating oil; 10. a tray; 11. a rubber seal ring; 12. high pressure nitrogen; 13. a floating piston; 14. a piston rod; 15. a piston; 16. a piston valve; 17. an O-shaped ring; 18. and (4) a groove.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

As shown in fig. 1, an inverted shock absorber comprises an inner cylinder 1, an outer cylinder 2 and a cylinder bottom 4, wherein a spring tray 10 is arranged on the outer cylinder, the inner cylinder 1 is sleeved in the outer cylinder 2 and movably connected with the outer cylinder 2, the cylinder bottom 4 seals the outer cylinder 2, a rod head 3 is arranged at the end of the inner cylinder 1, a bushing system is arranged between the outer cylinder 2 and the inner cylinder 1, a piston rod 14 penetrates through the outer cylinder 2 and the inner cylinder 1, one end of the piston rod 14 is fixed to the cylinder bottom 4 of the outer cylinder 2 through a nut 5, the other end of the piston rod is connected with a piston 15, the piston 15 is placed in the inner cylinder 1, the tail part of the piston 15 is connected with a piston valve 16, a floating piston 13 is arranged at the upper end of the piston 15, the floating piston 13 is provided with at least one end O-shaped ring 17, the O-shaped ring 17 is tightly attached to a cylinder wall groove 18, the O-shaped ring 17 is, the other side of the floating piston 13 is filled with nitrogen, and under the action of high air pressure, the floating piston 13 can freely slide to compensate the change of the volume of an oil cavity generated when the shock absorber is stretched/compressed, so that oil can flow through a valve body damping hole more uniformly, stably and smoothly, and the piston rod 14 is effectively prevented from being bent due to uneven stress of the piston rod 14 while the shock absorption effect is ensured.

The bushing system comprises two upper bushings 7 and one lower bushing 8, the upper bushings 8 and the lower bushings 8 are all placed between the inner barrel 1 and the outer barrel 2, a gap is reserved between the upper bushings 8 and the lower bushings 8, and lubricating oil 9 is filled in the gap. The 2 bushings above play a main guiding role, the bushing at the lower end plays an auxiliary righting role, and the lower end can also play a self-cleaning role, namely, debris in the cavity at the lower end is prevented from entering a working sliding area coated with lubricating grease.

Further, the pipe orifice at the upper end of the outer barrel 2 is provided with a rubber sealing ring 11, the rubber sealing ring 11 is attached to the inner barrel 1, so that external impurities and dirt are completely isolated, the lubricating grease is prevented from being polluted in a working sliding area, and the noise is greatly reduced.

Furthermore, the outer cylinder 2 is provided with a high-elasticity buffer block 6 close to the cylinder bottom 4, so that the automobile always encounters the conditions of sharp turning, braking, bumpy and undulating road surfaces and the like when moving, and the shock absorber is compressed to a position with a short limit, so that the shock absorber is likely to be damaged by impact. The product is provided with a high-elasticity buffer block 6 made of PUR material in the outer cylinder 2, and can buffer and absorb energy before the extreme compression state, so that the shock absorber is prevented from being damaged.

Furthermore, the outer surface of the inner cylinder 1 is plated with hard chromium, so that the strength of the cylinder wall of the inner cylinder 1 can be ensured not to be greatly influenced under the condition of long-time sliding.

Further, the piston valve 16 is a valve sheet type inclined damping hole valve system with two adjustable surfaces, the two surfaces can be adjusted, and the damping coefficient can be adjusted no matter the piston 15 is pressed down or rebounded.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. The utility model provides an inversion formula bumper shock absorber, includes the inner tube, urceolus and bobbin base, the inner tube cover establish in the urceolus and with urceolus swing joint, the sealed urceolus of bobbin base, the inner tube tip sets up pole head, its characterized in that: be provided with the bush system between urceolus and the inner tube, wear to establish a piston rod in urceolus and the inner tube, piston rod one end is fixed to the urceolus bobbin base through the nut, and the piston is connected to the other end, the piston is placed in the inner tube, and the piston afterbody is connected with the piston valve, the piston upper end is provided with floating piston, and floating piston sets up at least one end O shape circle, O shape circle closely laminates to the jar wall recess in, and floating piston opposite side fills nitrogen gas.

2. An inverted shock absorber according to claim 1, wherein: the bushing system comprises two upper bushings and a lower bushing, the upper bushings and the lower bushings are placed between the inner cylinder and the outer cylinder, a gap is reserved between the upper bushings and the lower bushings, and lubricating oil is filled in the gap.

3. An inverted shock absorber according to claim 1, wherein: and a pipe orifice at the upper end of the outer barrel is provided with a rubber sealing ring, and the rubber sealing ring is attached to the inner barrel.

4. An inverted shock absorber according to claim 1, wherein: and a high-elasticity buffer block is arranged on the outer cylinder close to the cylinder bottom.

5. An inverted shock absorber according to claim 1, wherein: the outer surface of the inner cylinder is plated with hard chromium.

6. An inverted shock absorber according to claim 1, wherein: the piston valve is a valve sheet type inclined damping hole valve system with two adjustable surfaces.