CN2172386Y - Self-sealing long service valve inside - Google Patents

Abstract

The utility model relates to a sealing device for the air valve of a small-size inflating tyre, in particular to a self-sealed long-life air valve for the tyres of manpower vehicles of bicycles, tricycles, platform lorries, etc. The self-sealed long-life air valve comprises a conical core body without keys, an emulsion tube, a stopping head, etc. The self-sealed long-life air valve has skillful and simple structure, low production cost and especially long service life, and is an ideal sealing device for the air valve.

Description

Self-sealing long service valve inside

The utility model relates to a kind of valve sealing device that is applicable to small-sized airtyred valve cock, particularly a kind of self-sealed long-acting valve inside that is used for manpower tires such as bicycle, tricycle, wooden handcart.

Bicycle, tricycle etc. are easy, the most popular a kind of traffic tool; Particularly the use of bicycle is the most extensive, especially in present development country, and society's having the call to bicycle.Yet the emulsion tube of the valve inside of the valve cock of the bicycle of current use usually owing to press, squeeze and damaged gas leakage, influences the normal use of bicycle.In order to solve this key issue, inventor both domestic and external has also thought various ways; For example Chinese utility model patent 87214601, its valve adopts piston type, the gas leakage that the emulsion tube breakage causes though this model utility has been avoided, because of bicycle running route environment changeable, be difficult to avoid dust, the dust of accumulation causes piston core stuck and malfunctioning easily; And for example Chinese utility model patent 87205987 has adopted helical spring, bar plug and cushion film structure, obvious its complex structure, and cost of production is also high.

The purpose of this utility model be for provide a kind of simple in structure, cost of production is low, emulsion tube is not easy the long-acting valve inside of sealed type of damaged gas leakage.

The utility model is realized by following technological scheme.Get emulsion tube and the conical core body of no key that directly contacts with the inner tube valve inner chamber ready, and do not have on the termination of the conical core body of key and be shaped on the retaining head that prevents that emulsion tube from coming off, the conical core body of no key is shaped on the vent emulsion tube and only is enclosed within no key conical core body lower end and is fixed with the retaining head of no key taper shape core body, promptly constitutes self-sealed long-acting valve inside.

The side vent that the conical core body of no key leads to the inner tube of a tyre is the clear opening of both sides ventilation; The retaining head can be made into taper shape, and the conical core body of no key is made with nonmetallic material.

The conical surface and the direct contact seal of inner tube valve inner chamber of the conical core body of no key of the present utility model, thereby avoided emulsion tube to be pressed, squeeze, no longer produce gas leakage because of it is damaged, and the conical surface that does not have the conical core body of key matches with the inner tube valve inner chamber, substantially there are not wearing and tearing between the two, thereby long service life; Because core body of the present utility model does not have key, so the conical core body of no key can rotate in the locking process, guaranteed that the conical core body of no key is that face cooperates with the valve inner chamber, thereby good sealing effect; Because the side vent that the conical core body of no key leads to the inner tube of a tyre is a through hole, this can be convenient to remove dirt in the vent, since no key taper shape core body make with nonmetallic material, but both machining moulding, but molding and forming again; The utility model simple and ingenious structure, manufacturing process is simple, and cost is low, high efficiency, long service life.

Below in conjunction with drawings and Examples the utility model is described in further detail:.

Fig. 1 is the utility model structural representation

With reference to Fig. 1, get general emulsion tube 1 ready and justify core body 2 with the no key that the inner tube valve inner chamber directly contacts, and do not have to be shaped on the conical core body of key 2 terminations and prevent that retaining that emulsion tube 1 comes off 3, no key taper shape core body 2 are shaped on vent 4, emulsion tube is enclosed within no key conical core body 2 lower ends and is fixed with the retaining of no key taper shape core body 23, promptly constitutes self-sealed long-acting valve inside.

The conical core body 2 usefulness plastics of no key or other nonmetallic material process; The conical core body 2 of no key leads to the clear opening of the side vent 3 of the inner tube of a tyre for the both sides ventilation, and the retaining head can be made into taper shape.

During use, emulsion tube 1 was overlapped the position and the topped vent 4 of the retaining 3 that does not have the conical core body 2 of key, and inserted inner tube valve and can lock inflation.

Claims (4)

1, a kind of self-sealed long-acting valve inside, comprise emulsion tube [1], it is characterized in that described long-acting valve inside also comprises the no key taper core body [2] that directly contacts with the inner tube valve inner chamber, and do not have on the termination of key garden key core body [2] and be shaped on the retaining head [3] that prevents that emulsion tube from coming off, no key taper core body [2] is shaped on vent [4], emulsion tube [1] is enclosed within no key taper core body [2] lower end and is fixed with the retaining head [3] of no key taper core body [2], promptly constitutes self-sealed long-acting valve inside.

2, self-sealed long-acting valve inside as claimed in claim 1 is characterized in that described no key taper core body ［ 2 ］ leads to the clear opening of the side vent ［ 4 ］ of the inner tube of a tyre for the both sides ventilation.

3, self-sealed long-acting valve inside as claimed in claim 1 is characterized in that described retaining 3 can be made into taper shape.

4, as claim 1,2 or 3 described self-sealed long-acting valve insides, it is characterized in that not having key taper core body ［ 2 ］ and make with nonmetallic material.

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