CN2457416Y

CN2457416Y - Spool down press type tyre valve inside

Info

Publication number: CN2457416Y
Application number: CN 00268965
Authority: CN
Inventors: 吕学谨
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-12-29
Filing date: 2000-12-29
Publication date: 2001-10-31
Anticipated expiration: 2010-12-29

Abstract

The utility model provides a valve core for a spool down-press type. The valve core is characterized in that a spool rod provided with a compression spring is inserted into a valve cap nut provided with an air nozzle, and a boss at the distant end of the valve core is provided with a sealing ring which is sealed with the inner end face of the valve cap nut or the air nozzle. The inner end face of the valve nut cap or the air nozzle is provided with an annular sealing pad which is sealed with a valve core sleeve. The utility model has the advantages of simple and reasonable structure, no small rubber tube, material saving, easy processing and intallation, good tightness, convenient operation, capability of being matched with the existing tyres and being suitable for manpower pump, etc. The valve core can be directly used for replacing the valve cores of the existing various cycle tubes.

Description

Spool press-down type tire valve inside

The utility model relates to a kind of one-way valve that designs for inflation bodies such as tires specially, especially a kind of spool press-down type tire valve inside.

Usually use a kind of valve inside on the inner tube of a tyre of existing bicycle, tricycle, wooden handcart etc. with the small rubber hose formula.This valve inside often needs renewal small rubber hose and fastening nut owing to small rubber hose wherein wears out and the loosening easily poor sealing performance that causes of nut easily.Chinese patent CN2226183Y discloses a kind of " air tight valve inside ", its main structure feature is that the end with the valve core body is installed in the valve core retainer plate mouth, be provided with volute spring in valve core retainer plate mouth, be provided with seal ring on the valve core body, the end of valve inside valve rod is provided with spool.This valve core structure complexity, part is too many, processing and installation difficulty, particularly it seals by the side of seal ring, and the dependence external pressure overcomes spring force and the tire internal air pressure comes pushing tow valve inside valve rod to inflate, and effect still can not be satisfactory.

The purpose of this utility model just is to overcome above-mentioned deficiency of the prior art, propose a kind of simple and reasonable for structure, no small rubber hose, save material, processing and installation are easily, sealability is fabulous, manipulates facility, the spool press-down type tire valve inside that can inflate with the supporting and suitable manpower of existing tire.

The purpose of this utility model can reach by implementing following technical proposal: be provided with a valve on conventional tire valve nut, wherein be inserted with the valve core rod of band pressure spring, on the boss of this valve core rod far-end seal ring is housed, by its sealing that matches with valve nut or valve interior edge face.The interior edge face of valve nut or valve is provided with Gask-O-Seal, by the sealing that matches with valve core retainer plate on the tire of its end face.In order to obtain better using effect, the utility model can also further be taked following measures: above-mentioned valve is designed to be linked in detachable structure among the valve nut, so that reduce the wearing and tearing of Gask-O-Seal, strengthens its sealing effect; Set up a spring capping of bringing the gas passage on the top of above-mentioned valve core rod, be convenient to regulate the elastic force of pressure spring by it; Above-mentioned valve core rod and spring capping all are designed to be longer than the valve on the valve nut and the structure of the part that stretches out, use the give vent to anger pressure of head of inflator when being beneficial to inflate they are depressed, make air inlet more smooth.

Accompanying drawing is the utility model embodiment's a structural representation.

Below in conjunction with embodiment and accompanying drawing the utility model is done to describe in further detail.In conventional tire valve nut (1), be sheathed with a valve (2) with separable form, wherein be inserted with the valve core rod (4) of band pressure spring (3), on the boss (5) of this valve core rod (4) far-end circular seal ring (6) is housed, its sealing that matches with valve (2) interior edge face of fit in the valve nut (1).The interior edge face of this valve (2) also is provided with bad shape sealing gasket (7), by the sealing that matches with valve core retainer plate (8) on the tire of its end face.Valve core rod (4) top is provided with a spring capping (10) of bringing gas passage (9) into, and they all are longer than valve (2) in the above-mentioned valve nut (1) and the part that stretches out.When using the utility model product, tightly be spun on valve core retainer plate (8) by the valve nut (1) that valve (2) and interior edge face Gask-O-Seal (7) thereof will be housed and upward play seal action.Under the double action of interior air pressure and pressure spring (3), the circular seal ring (6) on valve core rod (4) the far-end boss (5) is pressed on valve (2) interior edge face of fit in the valve nut (1), thereby makes valve inside have excellent sealing ability.When inflating, inflator give vent to anger head-clamp on valve nut (1), simultaneously the gentle family of power and influence's core bar of spring capping (10) (4) is depressed, the circular seal ring (6) and the interior edge face of valve (2) are separated, form the ring inlet hole, gas charges into the inner tube of a tyre through gas-entered passageway (9) and above-mentioned ring inlet hole.After inflation is finished, unclamp the head of giving vent to anger of inflator, valve valve core rod (4) and circular seal ring (6) seal above-mentioned ring inlet hole again under the double action of interior air pressure and pressure spring (3).

The utility model compared with prior art, have simple and reasonable for structure, no small rubber hose and saving Metal material, processing and installing easily, sealing property is fabulous, operates easy-to-usely, can join with existing tire Cover is fit to again manpower and the characteristics such as inflates, and can directly be used for replacing the valve inside on the existing various cycle tubes.

Claims

1, a kind of spool press-down type tire valve inside, comprise valve nut, valve, valve inside valve rod, spring and seal ring, it is characterized in that valve nut (1) is provided with valve (2), wherein be inserted with the valve core rod (4) of band pressure spring (3), seal ring (6) is housed on the boss of this valve core rod far-end (5), by its sealing that matches with valve nut (1) or valve (2) interior edge face, the interior edge face of valve nut (1) or valve (2) is provided with Gask-O-Seal (7), by the sealing that matches with valve core retainer plate (8) on the tire of its end face.

2, spool press-down type tire valve inside according to claim 1 is characterized in that above-mentioned valve (2) is linked among the valve nut (1) and is detachable structure.

3, spool press-down type tire valve inside according to claim 1, the top that it is characterized in that above-mentioned valve core rod (4) are set up a spring capping (10) of bringing gas passage (9) into.

4, spool press-down type tire valve inside according to claim 3 is characterized in that above-mentioned valve core rod (4) and spring capping (10) all be longer than valve (2) on the described valve nut (1) and the part that stretches out.