CN1084814A - Self-inflation tyre - Google Patents

Abstract

The invention provides a kind of self-inflation tyre, it is characterized in that in tire, having an air bag, have valve and exhaust check valve that breather check valve is housed on the air bag, between the inlet and outlet check valve, have spring.The profile of this tire, installation form, using method and compatible fully with commercially available tire performance with air-pump inflating etc.Because simple in structure, advantages such as protection function is complete, cost is low, long service life are arranged, suitable various vehicles use.It is the existing replacement technology of commercially available various inflation tyre.And suitable large, medium and small rubber plant produces.

Description

Self-inflation tyre

The invention belongs to technical field of traffic transportation, is a kind of gas tire that charges and discharge automatically.

Though having accomplished not stop, existing automatic inflation tyre just can give tire (inner tube of a tyre) inflation, but there is volume big, parts are many, complex structure, use inconvenience and be saturated at tyre pressure can not break away from mode of operation (promptly not consumed power) in the distance of deficency automatically and the manufacturing process performance poor, cause shortcomings such as cost height, make all kinds of automatic inflation tyres (comprising self-filler) can't popularize use.A kind of " the automatic deflation tonifying Qi inner tube of a tyre " (application number is 91209574.1) disclosed on the Chinese patent Patent Gazette for Utility Models, mainly by two air bags of venting, tonifying Qi of inner tube of a tyre inner chamber, the inflation gas of advance, the exit check valve and the tonifying Qi air bag of venting air bag is chewed and snakelike air bag constitutes.Though this tire structurally improves to some extent, but still have the former described deficiency, and because of its structure unreasonable, so make bicycle use tire difficulty and can not be used by heavy-duty vehicle.

Purpose of the present invention is intended to overcome the shortcoming of above-mentioned technology, has designed a kind of simple in structurely, and cost is low, and is easy to use, and is used for the self-inflation tyre of various vehicles.

The objective of the invention is to realize like this: be provided with suction, the shared air bag of inflation at the tire inner chamber, having the gas that stretches out outside the tire on this air bag chews, in chewing, gas has the breather check valve that communicates with the air bag inner chamber, also have the exhaust check valve that communicates with tire inner chamber and air bag inner chamber on the air bag, and between the inlet and outlet check valve, have spring.

Breather check valve substitutes with overpressure spill valve.

The inlet and outlet check valve all substitutes with overpressure spill valve.

Exhaust check valve substitutes with height limit switch valve.

Air bag is a highly elastic material, the tensile strength of its air bag satisfy air bag and spring open the application force sum time save spring.

Air bag is in design, should satisfy two technical indexs in makings: one, air bag overcomes the saturated pressure of tire inner chamber gas and is in open configuration all the time under action of the spring, and its deployed height equals tire gas saturation conditions highly.Like this, tire is when no gas or deficency state, and wheel revolution moving on the ground changes, and air bag just is crushed once, promptly to the tire interacvity air-filling once.And the Recovery Process of air bag under action of the spring is breathing process, for inflation is for the second time got ready.This air-breathing (air inlet), the inflation (exhaust) the periodic duty process when reaching the saturated height of inflation of tire till.Because this moment, air bag no longer was crushed, and made air inflator system break away from mode of operation automatically.Therefore play the gas filed runflat effect of limit.The upper lifting force that bears when two, the cross-sectional area of air bag should satisfy the internal gas pressure oversaturation of tire chamber can be with length of spring compressed one segment distance, and the many more springs of air pressure oversaturation are compressed apart from big more, air bag baseplane and tire are disengaged fully, even losing the condition of being crushed, air bag can not play super-saturated restricted charging effect to inflation again in the tire chamber.This oversaturation restricted charging defencive function can avoid wheel to travel on uneven road surface effectively, or when brake produces the moment overload and cause oversaturation inflation phenomenon.Also make air inflator system break away from mode of operation up hill and dale.

The present invention compares with the automatic deflation tonifying Qi inner tube of a tyre with existing automatic inflation tyre, having parts reduces, complete (the runflat function of protection function, automatically break away from mode of operation function and air-filtering function), air bag and intake and exhaust check valve three big main part structures are compact simple, low (the high approximately existing bicycle use tire cost 0.7-2 unit of bicycle use tire cost of cost, motor bike motor bike tire cost 3-5 unit occurs with the about height of tire cost, and automobile automobile tire cost 5-8 unit occurs with the about height of tire cost), highly versatile (tire profile, installation form, using method and use air-pump inflating, compatible fully with hand venting etc. and commercially available tire performance) etc. advantage.This tire uses the air-pump inflating except that the inflation first time of opening the beginning, just is in the gas saturation conditions forever as long as tire does not break, do not leak later on, therefore can not roll over bad inside and outside tire because of deficency.Because air bag can break away from mode of operation automatically when tire gas saturation conditions, so can prolong tire service life effectively.Can also reduce simultaneously the driving power of vehicle ' effectively, promptly energy-conservation.This tire is suitable little of bicycle, motor bike, arrives any vehicle such as trac., automobile greatly and uses.It is the existing replacement technology of commercially available tire.And suitable large, medium and small each rubber plant produces.

Below in conjunction with drawings and Examples the present invention is elaborated:

Fig. 1 is a kind of structural representation of the present invention.Fig. 2 is the overpressure spill valve structural representation.Fig. 3 is a height limit switch valve arrangement scheme drawing.Fig. 4 is integral scheme drawing with tire and air bag group.Fig. 5 is a self-inflatingPads inner tube free tire scheme drawing.

Embodiment 1: referring to Fig. 1.The present invention includes and stretch out the outer gas of tire 8 and chew 3 and at the rubber pneumatic bag 9 and the inlet, outlet check valve of tire 8 inner chambers.The gas of putting into gas check valve 4 in its air bag 9 tops have chews 3, this gas is chewed 3 outer upper ends the plastics air filter housing 1 with filter core 2 is housed, breather check valve 4 communicates with the inner chamber and the filter mantle 1 of air bag 9, air bag 9 bottoms have communicate with tire 8 and with the corresponding exhaust check valve 11 in breather check valve 4 positions, and between inlet and outlet check valve (4,11), spring 10 is housed.Be equipped with in order to compress air bag 9, tire 8 and gas on gas is chewed the packing ring 7 of bottom outside 3 and chew 3 hold-down nut 6, gas is chewed the 3 outer back tightening nuts 5 that are fixed in addition on the wheel rim.This structure by air bag 9, gas chew 3, breather check valve 4 and spring 10 constitute air gulp system, by air bag 9, exhaust check valve 11 and tire 8 inner chambers constitute air inflator system.And guaranteeing air bag 9 in design, (note is made P to the application force sum of opening of spring 10 _Open) with tire 8 chambeies in the antagonistic force of inflation saturated pressure by air bag 9 lower flat (sectional area) (note is made P _Instead) on highly equaling the H position, balance each other (when promptly highly equaling H: P opens+and P is anti-=and 0).Like this, when in tire 8 chambeies when no gas or deficency, promptly work as P _Open〉=P _InsteadThe time, as long as wheel rotates on the ground, it must be that revolution lands once that 9 sections tires 8 of air bag are housed.Promptly (note is made P in load _Carry) effect under make P _Instead+ P _Carry＞P _Open, air bag 9 is crushed, and gas is in exhaust check valve 11 enters tire 8 chambeies in the capsule, i.e. and inflation is once.Along with wheel, air bag 9 leaves landing ground gradually with tire 8 sheds the load that adds, at P _Open＞P _InsteadEffect lower gasbag 9 is highly replied to H, makes and produces the effect of inhaling in air bag the 9 chamber in, gas is chewed 3 outside gases suck in air bag 9 chambeies, gets ready for inflate next time.This inflation, air-breathing working process are until reaching P _OpenP _InsteadTwo forcees balance are till the height and position of H.At this moment air bag 9 no longer is crushed, so work system breaks away from mode of operation, plays the gas filed safety effect of limitation in height.If vehicle ' causes tire 8 moments overload in factors such as uneven or brakes, air bag 9 is crushed causes oversaturation inflation, i.e. P _Instead＞P _Open, air bag 9 base plane are at P _InsteadOn lift leave the design balance height H under the pressure effect and on move.Because of P _InsteadMove many more on pressure is big more, air bag 9 baseplane D are disengaged fully and unsettled with tire 8, cause air bag 9 to lose the condition of being crushed fully and can not in tire 8 chambeies again the inflation safety effect that plays the overvoltage restricted charging with make air inflator system break away from mode of operation fully and automatic out-of-work function.Exhaust check valve 11 is made and should be guaranteed that (note is made P to positive pressure in design _Just) reach 0.01-0.2MPa and just open conducting.It will make air bag 9 inner chamber gaseous tensions exceed a P forever _JustValue could be to tire 8 interacvity air-fillings, the slight overload that often occurs when this performance can suppress high vehicle speeds effectively and slight oversaturation inflation phenomenon, the i.e. gas filed safety effect of pressure differential limits that cause.

Embodiment 2: referring to Fig. 1, Fig. 2.At heavy-duty vehicle, breather check valve 4 should be changed the outfit is overpressure spill valve, in this overpressure spill valve 12 comprises breather check valve 13 is housed travel again under the extremely bad situation in road surface (as the mine with car, cross-country car, military vehicle etc.).And (note is made P to make the overflow response pressure of overvoltage relief valve 12 _Overflow) adjust to P _InsteadValue.Like this, when vehicle causes regular serious overload to be directed at air bag 9 during at bad road traveling extremely to be crushed, because of P _Instead+ P _Just＞P _OverflowForce value is discharged so air bag 9 inner chamber gases pass through pressurized overflow valve 12, thereby plays the absolute cover effect of pressurized overflow.The inlet and outlet check valve all can be substituted with overpressure spill valve 12 in more special (big) environment for use as the temperature difference.Other structure is identical with the foregoing description 1.

Embodiment 3: referring to Fig. 1, Fig. 3.Not high at operating needs, make things convenient for the sulphurization of tire 8 in manufacturing process again, exhaust check valve 11 usefulness height limit switch valve 14 can be substituted.Because the unlocking condition of height limit switch valve 14 is to go up contact surface m to be depressed, so the distance that gas is chewed between lower plane c and the m is exactly the distance that air bag 9 is allowed to flatten, also and the permission deficency state distance of tire 8 maximum when using, make the inflation degree of saturation in tire 8 chambeies allow the deficency state to pace up and down in maximum all the time, play anti-inflating overpressure effect to saturation conditions.Other structure is identical with embodiment 1.

Embodiment 4: referring to Fig. 1, Fig. 4.Little at tire 8 diameters, the less demanding or inflation frequency lower (wheel revolutions is low) of inflation pressure is further to reduce inflation tyre part sum and cost, air bag 9 and tire 8 is made as a whole (this helps decomposed P _InsteadUpper lifting force), spring 10 usefulness spring leafs 15 are directly cast in 9 li in air bag.Other structure is identical with embodiment 1.

Embodiment 5: referring to Fig. 1, Fig. 5, it is an independence, complete self-filler that tire 8 is removed last lower part, it is loaded on the wheel rim 16 of tubeless tires 17, and the deployed height H of its air bag 9 equals the height of inner tube free Tyre inflating saturation conditions substantially.So just make tubeless tires 17 become to self-inflatingPads inner tube free tire.Under the big situation of tire cross section diameter, available pad 18 fills up air bag 9.Air bag 9 volumes can be done forr a short time like this, to reduce P _InsteadUpper lifting force.Also can do spring 10 smaller, help design, make.

Air bag 9 shapes of the present invention can be made according to tire 8 shapes, and its material is gone back the available metal material except that the rubber highly elastic material; Spring 10, spring leaf 15 can be made as shapes such as cylinder, trochoid spiral shape, convexity and concave helix, combined helical shape, sheet shape according to air bag 9 shape needs; When air bag 9 satisfies P for the tensile strength of highly elastic material, air bag 9 _OpenThe time can save spring 10, spring leaf 15 need not, by air bag 9 double as rubber springs; Exhaust check valve 11 also can be loaded on air bag 9 sidepieces; Gas is chewed 3 and be can be straight shape, also can be to bend to other shape; Breather check valve 4, exhaust check valve 11, overpressure spill valve 12 and height limit switch valve 14 require and can be made in one on the whole with air bag 9 usefulness same materials or unlike material according to in-use performance.

Claims (8)

1, a kind of inlet and outlet check valve (4,11) and air bag 9 and gas of comprising chewed 3 self-inflation tyres that stretch out outside the tire 8, it is characterized in that: be provided with suction, the shared air bag 9 of inflation at tire 8 inner chambers, have gas on this air bag 9 and chew 3, chew at gas and to have the breather check valve 4 that communicates with air bag 9 inner chambers in 3, also have the exhaust check valve 11 that communicates with tire 8 inner chambers and air bag 9 inner chambers on the air bag 9, and between inlet and outlet check valve (4,11), have spring 10.

2, self-inflation tyre according to claim 1 is characterized in that: breather check valve 4 usefulness overpressure spill valves 12 substitute.

3, self-inflation tyre according to claim 1 is characterized in that breather check valve 4, exhaust check valve 11 all substitute with overpressure spill valve 12.

4, self-inflation tyre according to claim 1 is characterized in that: exhaust check valve 11 usefulness height limit switch valve 14 substitutes.

5, self-inflation tyre according to claim 1 is characterized in that: air bag 9 is an integral body with tire 8, and spring 10 usefulness spring leafs 15 substitute.

6, self-inflation tyre according to claim 1 or 5 is characterized in that: air bag 9 is highly elastic material, its tensile strength satisfy air bag 9 and spring 10 open the application force sum time can save spring 10.

7, self-inflation tyre according to claim 1 is characterized in that: removing tire 8 just becomes a self-filler.

8, self-inflation tyre according to claim 7 is characterized in that: self-filler is loaded on the wheel rim 16 of tubeless tires 17, and its tubeless tires 17 is a self-inflatingPads inner tube free tire.

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