CN2254412Y - Self-filling air tyre tube - Google Patents

Abstract

The utility model relates to a self-filling air tyre tube. A hole (206) arranged in the center of a valve needle is a through hole. The lower part of a tyre valve and a hollow elastic sphere (3) arranged in a rubber ring (1) are in air-tight connection. The tyre valve is provided with a one-way air inlet valve (2). The lower outer bottom wall of the sphere (3) reaches the position of the inner side walls of a tyre cover. A one-way air outlet valve (4) is arranged on the sphere (3) and leads to the inner space of the self-filling air tyre tube. The sphere (3) is pressed and released repeatedly by the weight of a riding vehicle for constantly inflating the self-filling air tyre tube. The self-filling air tyre tube of the utility model has no additional parts and has the advantages of no change on the structures of wheels, identical installation way, and less raised price of tyre tubes.

Description

From inflatable inner tube

The utility model relates to bicycle tube, more specifically, relates to from inflatable inner tube.

Present bicycle inflatable inner tube is to be put on the air through tire tube valve by inflator, often runs into the situation that does not but have inflator in the time of should inflating, and the manpower inflation is also required great effort.Existing people manages head it off from two aspects: the first is made Uninflated inner tube; It two is to add small-sized inflator on wheel; The former tire selling at exorbitant prices, and material aging makes flexibility decrease, tire slacken and can not using on wheel.Latter's complex structure, during erection cost, the installation requirement height is so fail so far to promote.

The purpose of this utility model provides the self-aerated new solution of a kind of bike tyre, promptly proposes a kind ofly from inflatable inner tube, does not increase parts beyond the inner tube of a tyre, does not change the mounting of tyre mode, and that price increases is very few.

Scheme of the present utility model is as follows: the tire tube valve that substitutes the inner tube of a tyre uses a breather cheek valve, its underpart is sealably coupled to the hollow elasticity spheroid that is located among the inner tube of a tyre, this spheroid leads to place, the interior space of the inner tube of a tyre establishes unidirectional air outlet valve, and described elastic sphere exterior bottom wall reaches the cycle casing inner wall position.

This kind inner tube of a tyre is contained on the bicycle, when when operation, when spheroid forwards to the ground contact position, is subjected to the weight compressing and compresses, and the ball internal gas pressure rises, and air enters inner tube of a tyre space through unidirectional air outlet valve.When spheroid left with the ground contact position, the shape that resiles under elastic reaction, ball internal gas pressure descended, and air is sucked from the external world, so goes round and begins again, make the inner tube of a tyre remain with car on the corresponding pressure of total weight.

Above scheme can also add tire tube valve on breather cheek valve, to keep initiatively manpower aerification function.

This programme has been exempted the prior art inner tube of a tyre from inflatable inner tube needs special gas filed trouble, and its structure can be adapted to the structure of existing bicycle wheel, needn't add other parts in addition, and the tire mounting means is also identical, has no special requirements, and inner tube of a tyre price increases very few.

Accompanying drawing 1 is the novel first example structure scheme drawing of this reality.

Accompanying drawing 2 is deformation patterns of the utility model first embodiment.

Accompanying drawing 3 is the utility model second example structure figure.

Describe embodiment now in conjunction with the accompanying drawings in detail.

Fig. 1 is the first example structure scheme drawing.This is one section that the inner tube of a tyre has tire tube valve, wherein 1 is inner tube of a tyre rubber ring, and what substitute existing tire tube valve is a breather cheek valve 2, and flange 211 is arranged at valve body 21 bottoms, check valve 2 passes a hollow elasticity spheroid 3 and rubber ring 1, by bowl-type pad 22 and hold-down nut 23 they is done airtight combination.Spheroid 3 leads to inner tube of a tyre inner space establishes unidirectional air outlet valve 4 and spheroid 3 airtight combinations, and air flow is opposite with air inlet valve 2.The following exterior bottom wall of spheroid 3 reaches the cycle casing inner side, and when riding with assurance, when tire contacted with ground, the deformation energy of cover tire was delivered to spheroid 3, does corresponding distortion thereupon.

Check valve can have the same structure of core of common steel ball check valve, but screw thread is arranged on the outer cylinder, and flange 211 is arranged at the bottom, so that hold-down nut 23 revolves thereon.

Spheroid 3 diameters among Fig. 1 can be less than the cross section diameter of inner tube of a tyre rubber ring 1, so that increase inflation pressure.As shown in Figure 2.This moment, the breather cheek valve axial length increased, remove with first example in the same, bowl-type pad 22, hold-down nut 23 are used for airtight air valve 2 and the rubber ring 1 of being incorporated into, simultaneously, the flange 211 and second hold-down nut 231 are established in valve body 21 bottoms, are used for spheroid 3 and valve 2 airtight combinations.

Fig. 3 is the figure of second embodiment.This example is done some distortion with the breather cheek valve structure, the tire tube valve keystone configuration that has the inner tube of a tyre now is combined with it, to keep with the artificial initiatively gas filed function of inflator.This routine structure can be made on the basis of Fig. 1, also can make on the basis of Fig. 2.The same breather cheek valve 2 and the unidirectional air outlet valve 4 (not shown among Fig. 3) established with first example on the hollow elasticity spheroid 3.Described breather cheek valve 2 has valve body 201, spool 202 is in the bottom of valve body 201, spool 202 central air induction holes and through hole 203 communicate, establish the infundibulate conical surface 204 on it, fill in plunger 205 in the through hole 203, it is similar with existing plunger, difference is that central pore 206 connects, and do not have pore be located at valve body 201 through holes 203 on the plunger conical surface 204 that matches of the conical surface 204 ' on, have on the plunger upper periphery face ear 208 of two protrusions ', in corresponding groove on the insertion valve body, anti-plunger rotates.Valve ferrule 209 is screwed on the screw thread of valve body 201 outer cylinders, by pick up the ears 208 ' with plunger to pressing down, guarantee the conical surface 204,204 ' applying, leak gas when preventing the manual inflation.

Plunger 205 conical surface portions 204 ' and following place can put valve inside 207, make the conical surface 204, a 204 ' strictness airtight, in valve body 201, establish the hole 210 of leading to inner tube of a tyre inner space from the conical surface 204 then, this hole can be used for inner tube deflation, it only needs plunger 205 is extracted, remove the conical surface 204, a 204 ' air-tightness, air will 210 effusions along the hole in the tire.

Inner tube of a tyre structure of the present utility model is applicable to the three-wheel vehicle inner tube of a tyre.

Claims (5)

1. from inflatable inner tube, be the hollow annular thing that a kind of rubber ring (1) constitutes, it is characterized in that establishing in the rubber ring (1) hollow elasticity spheroid (3); A breather cheek valve (2) passes described elastic sphere (3) and rubber ring (1), and by bowl-type pad (22), hold-down nut (23), valve body (21) becomes airtight combination with described spheroid (3) and rubber ring (1); A unidirectional air outlet valve (4) passes that described elastic sphere (3) leads to inner tube of a tyre inner space and described spheroid (3) is done airtight combination; Described elastic sphere (3) exterior bottom wall down reaches the cycle casing inner wall position.

According to claim 1 from inflatable inner tube, it is characterized in that described elastic sphere (3) is through hold-down nut (231) and the airtight combination of described air inlet valve body (21); Air inlet valve body (21) is by bowl-type pad (22), hold-down nut (23) and the airtight combination of described rubber ring (1).

According to claim 2 from inflatable inner tube, it is characterized in that described valve body (21) center upper portion has the induction opening of through hole (203) and air inlet spool (202) to communicate; Described through hole (203) has the funnel-form conical surface (204); Plunger (205) inserts in the described through hole (203), has on the pin and the corresponding conical surface (204 ') of the described conical surface (204), and there is through hole (206) at the pin center, and there is hand hay cutter ear (208 ') both sides, pin top, are located in the corresponding groove in valve body (21) top for embedding; Valve ferrule (209) is screwed in outside valve (21) top to be gone up on the screw thread in garden week, by described picking up the ears (208 ') with described plunger to pressing down, guarantee that the described conical surface (204,204 ') fits mutually.

According to claim 1 from inflatable inner tube, it is characterized in that described valve body (21) center upper portion has the induction opening of through hole (203) and air inlet spool (202) to communicate; Described through hole (203) has the funnel-form conical surface (204); Plunger (205) inserts in the described through hole (203), has on the pin and the corresponding conical surface (204 ') of the described conical surface (204), and there is through hole (206) at the pin center, and there is hand hay cutter ear (208 ') both sides, pin top, are located in the corresponding groove in valve body (21) top for embedding; Valve ferrule (209) is screwed in outside valve (21) top to be gone up on the screw thread in garden week, by described picking up the ears (208 ') with described plunger to pressing down, guarantee that the described conical surface (204,204 ') fits mutually.

According to claim 3 from inflatable inner tube, it is characterized in that on the conical surface (204 ') of the described plunger in place (205), being with valve inside (207); There is air extractor vent (210) to be located in the described valve body, leads to the space in the inner tube of a tyre rubber ring (1) from the described conical surface (204) position.