CN105984543A - Front fork suspension assembly - Google Patents

Abstract

Disclosed is a front fork suspension assembly for a vehicle. The front fork includes a second limb having an outer tube and an inner tube capable of reciprocating within inner diameter of the outer tube. The inner tube comprises at least two openings configured in proximity of the lower open end portion, and low-density flexible foam configured on internal circumference thereof. The low-density flexible foam is impregnated with predefined quantity of oil. The inner tube also comprises inert gas filled therein and a non return valve configured at lower open end thereof, wherein the non-return valve allows the inert gas from the outer tube to be back in the inner tube.

Description

Front fork suspension assembly

Technical field

The present invention relates to the suspension assembly of motor vehicles, and more particularly, to for such as two The unidirectional Self inhaling type front fork suspension assembly of the motor vehicles of wheel car.

Background technology

The most eurypalynous vehicle uses the one or more cars being positioned vehicle to operably One or more suspension assemblies between wheel and car body.Suspension assembly is by for vehicle warp On the surface crossed protuberance or other irregularly carry out damping to improve the control of operator.Across Striding type vehicle such as motor or scooter (scooter) and use the other types of single front-wheel The commonly used telescopic front fork suspension assembly of vehicle the protuberance run into by front-wheel is carried out Damping.

Suspension assembly/amortisseur on sulky vehicle (two wheeler) is divided into front fork and posterior bumper. Currently available front fork is included in the Liang Ge branch of vehicle front, to carry out turning to and provide easypro Suitable rides.Front fork includes fork oil, piston and structure spring wherein.Fork oil and combination bore There is provided for the comfortable resistance ridden.But, front fork of the prior art is prone to let out in its side Leakage, causes branch to be lost efficacy and frictional noise, thus causes uncomfortable riding.

Accordingly, it would be desirable to a kind of front fork for two wheeler, of the prior art above-mentioned scarce to overcome Fall into.

The purpose of the present invention

It is an object of the invention to provide the nothing friction of two wheeler by reducing frictional noise Operation.

It is another object of the present invention to reduce the weight on front-wheel.

Summary of the invention

Therefore, the present invention provides a kind of front fork suspension assembly for vehicle.Front fork includes first Branch and the second branch, the first branch has fork oil, piston and structure spring wherein, the Two branch into unidirectional Self inhaling type hangs branch.Second branch includes: outer tube, and it has opens Upper end and the lower end of closedown；And inner tube, it can move back and forth in the internal diameter of outer tube. Inner tube includes the upper end closed and the lower end opened.Inner tube includes: at least two opening, its structure Make as the neighbouring end portion opened；And low-density flexible foam, its structure is in inner tube Zhou Shang.Low-density flexible foam is by the oil-impregnated of scheduled volume.Inner tube also includes being filled in therein Noble gas and check-valves, check-valves structure is at the lower end opened of inner tube, wherein, non-return Valve allows noble gas to return to inner tube from outer tube.Wherein, when striking the protuberance on path, Noble gas in inner tube flows through low-density flexible foam with a direction, and carries the thin of oil Mist granule is along inner tube through described at least two opening, and wherein, the mist granule of oil is deposited on In the inner circumferential of outer tube, thus provide lubrication for damping.

Accompanying drawing explanation

Fig. 1 and Fig. 2 illustrates the unidirectional Self inhaling type second point of the front fork assembly according to the present invention ?；

Fig. 3 illustrates and fills in unidirectional Self inhaling type second branch of the front fork assembly at Fig. 1 The device of noble gas；And

Fig. 4 illustrates the check-valves of unidirectional Self inhaling type second branch of the front fork assembly of Fig. 1.

Detailed description of the invention

The above-mentioned mesh of the present invention is realized by the present invention as described in following preferred implementation , and overcome the problems and disadvantages relevant with prior art and method.

The present invention is provided to vehicle, be specifically used for the front fork suspension assembly of sulky vehicle.Before Fork suspension assembly provides unidirectional Self inhaling (UDSA) formula front fork.Before the UDSA formula of the present invention Pitch by reduce friction and thus reduce frictional noise provide two wheeler without friction operation.This The UDSA formula front fork lighter in weight of invention reduces the weight on front-wheel.

Referring now to Fig. 1 to Fig. 2, it illustrates before vehicle is in particular for sulky vehicle Fork suspension assembly 200.Front fork assembly 200 includes first branch's (not shown), and it has fork Oil, piston and structure spring wherein.First branch is similar to the suspension group of prior art The branch of part.Front fork suspension assembly 200 also includes the second branch 100, and it is unidirectional Self inhaling Formula hangs branch.In a preferred embodiment, the first branch construct in the left-hand side of sulky vehicle, And the second branch 100 (unidirectional Self inhaling type hangs branch) structure is at the right hand of sulky vehicle Limit.

Second branch 100 includes outer tube 10 and inner tube 50.In one embodiment, outer tube 10 is made of aluminum, and inner tube 50 is made up of steel alloy.

On the axle of the front-wheel that outer tube 10 is fixed to sulky vehicle.In one embodiment, outward Pipe 10 is fixed on the axle of sulky vehicle by nuts and bolt.In a preferred embodiment, Outer tube 10 includes the upper end 12 opened and the lower end 14 cut out.

Inner tube 50 can be moved back and forth in the internal diameter of outer tube 10 by the upper end 12 opened. Specifically, inner tube 50 moves back and forth in outer tube 10, does not the most leave gap.? In preferred implementation, inner tube 50 includes the upper end 52 closed and the lower end 54 opened.Inner tube 50 handles being connected to sulky vehicle.In one embodiment, inner tube (10) passes through bolt It is fixed to the handle of sulky vehicle.

Inner tube 50 includes at least two opening 26 constructed thereon.Additionally, inner tube 50 includes Construct the low-density flexible foam 28 within it week.Low-density flexible foam 28 is configured to Foam 28 is made to form the pipe in inner tube 50.In one embodiment, low-density flexibility bubble Foam 28 is polyurethane foam.

Low-density flexible foam 28 is by the oil-impregnated of scheduled volume.Such as, oil mass can be 30 millis Rise.It is the fork oil being generally used in suspension for impregnating the oil of low-density flexible foam 28.

Inner tube 50 includes being filled in noble gas therein and structure under the opening of inner tube 50 The check-valves 30 of end.In one embodiment, the upper end of the closedown of inner tube 50 include for Fill the device of noble gas wherein.As it is shown on figure 3, it is lazy for filling in inner tube 50 The device of property gas is bolted cover assembly 40.Bolted cover assembly 40 includes with O 44 solid Fixed bolted cover 42 and valve rubber 46.This indifferent gas that offer inner tube 50 inside irreversible is provided Body is filled.

In a preferred embodiment, noble gas is nitrogen.But, to this skilled person It is contemplated that other noble gases known in this field can be used.

If necessary, open in inner tube 50 bottom the check-valves 30 at end allow gas from Outer tube 10 returns in pipe 50.As shown in Figure 4, check-valves 30 includes slender member 32, It is fixed in the housing 36 in inner tube 50 inner circumferential by O 34.Additionally, check-valves 30 include the spring 38 being wrapped on long and thin metal part 32.When operating the phase in the second branch 100 Between noble gas enter outer tube 10 and when inert gas pressure in outer tube 10 from inner tube 50 When exceeding threshold value, the pressurized noble gas of elongate articles 32 pushes back, thus slender member 32 with Leave space between O 34, and thus allow noble gas to escape into inner tube 50.When When inert gas pressure in outer tube 10 reduces, spring 38 applies pressure to slender member 32, Slender member 32 is sealed to inner tube 50 by O, limits noble gas from inner tube 50 Escape into outer tube 10.

During operation, the noble gas when striking the protuberance on path, in inner tube 50 Flow through low-density flexible foam 28 with a direction and carry the mist granule of oil along inner tube process Described at least two opening, wherein the mist granule of oil is deposited in the inner circumferential of outer tube, thus is Damping provides lubrication.

Specifically, when striking the protuberance on path, noble gas is in the second branch 100 Interior with a direction flowing, the first branch 150 normally works according to the Conventional branch of front fork simultaneously. When clashing into protuberance, the air the flow haul distance with branch and position in the second branch 100 Move speed V to be directly proportional.When flowing through the second branch 100, noble gas carries mist oil Grain.Herein, low-density flexible foam 28 is as the filter for noble gas, indifferent gas Body carries oil mist particles through this filter, oil mist particles through described at least two opening 26 from Open.The mist granule of oil is deposited in the inner circumferential of outer tube 10, thus provides lubrication for damping.

Second branch 100 also includes the dust seal assembly being arranged on the topmost portion of outer tube 10 60, it is used for preventing mud dirt from gathering.Additionally, the oil sealing 62 of the second branch 100 and jump ring 64 set Put the lower section at dust seal assembly, to prevent the leakage of oil, if any.

Advantages of the present invention

1. the front fork suspension assembly 200 with unidirectional Self inhaling type front fork 100 is capable of two-wheeled Car without friction operation.

2. the front fork suspension assembly with unidirectional Self inhaling type front fork 100 has lighter weight.

By the present invention described in embodiments of the present invention, it is achieved that the above-mentioned mesh of the present invention And overcome the problems and disadvantages relevant with prior art and method.There is provided herein preferably The specific descriptions of embodiment, it is to be understood that, the present invention can be embodied as different forms.Cause This, detail disclosed herein should not be construed as restriction, but as the basis of claim And as instruct the most suitable concrete assembly of this skilled person, structure or Entity is applied the representational basis of the present invention.The embodiment of the invention described above and herein public affairs The method opened also suggested further modification and change to this skilled person.Can carry out institute The further modifications and variations stated are without departing from the spirit and scope of the present invention.

Claims (6)

1., for a front fork suspension assembly for vehicle, described front fork has the first branch and second Branch, described first branch has pitches oil, piston and structure spring wherein, and described second Branching into unidirectional Self inhaling type and hang branch, described second branch includes:

Outer tube, it has the lower end of upper end and the closedown opened；And

Inner tube, it can move back and forth in the internal diameter of described outer tube, and said inner tube has closedown Upper end and the lower end opened, said inner tube has,

At least two opening, its be configured to neighbouring described in the end portion opened,

Low-density flexible foam, its structure in the inner circumferential of said inner tube, described low-density Flexible foam by the oil-impregnated of scheduled volume,

The noble gas being filled in said inner tube；And

Check-valves, its structure is at the lower end opened of said inner tube, wherein, described only Returning valve allows noble gas to return to said inner tube from described outer tube,

Wherein, when striking the protuberance on path, the noble gas in said inner tube is with one Described low-density flexible foam is flow through in direction, and carries oily mist granule along inner tube through institute Stating at least two opening, wherein, the mist granule of described oil is deposited in the inner circumferential of described outer tube, Thus provide lubrication for damping.

Front fork suspension assembly the most according to claim 1, wherein, the closedown of said inner tube Upper end include the device for filling noble gas wherein.

Front fork suspension assembly the most according to claim 1, wherein, described noble gas is Nitrogen.

Front fork suspension assembly the most according to claim 1, wherein, dust seal assembly sets Put the topmost at described outer tube, be used for preventing mud dirt from gathering.

Front fork suspension assembly the most according to claim 1, wherein, oil sealing and jump ring are arranged In the lower section of described dust seal assembly, to prevent the leakage of oil needing when.

Front fork suspension assembly the most according to claim 1, wherein, described low-density is flexible Foam is polyurethane foam.