CN2169753Y

CN2169753Y - One-way air valve inside

Info

Publication number: CN2169753Y
Application number: CN 93213161
Authority: CN
Inventors: 陈尧生
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-05-21
Filing date: 1993-05-21
Publication date: 1994-06-22
Anticipated expiration: 2003-05-21

Abstract

The utility model discloses a one-way air valve. The one-way air valve is characterized in that an air inlet is arranged at the lower end of the air valve, and the air inlet and the inflating hole of the upper end of the air valve are in an axial cord. The air inlet is conical, and a conical valve is arranged in the conical air inlet. The one-way air valve has the advantages of labor-saving charge and good airtight performance. The one-way air valve can be used on tyre air valves and other one-way valves.

Description

One-way air valve inside

The utility model belongs to the improvement of Non-return air valve valve core structure.

The inlet hole of the tyre valve core of existing bicycle, handcart is very little, inflates in the process, when the pressure of the inner tube of a tyre constantly increases, the pressure of inlet hole is also constantly increased, so the person of inflating is more and more hard; In addition, get loose, make tightness relatively poor because the valve inside rubber neck is easily aging.

The purpose of this utility model is to improve the structure of this unidirectional valve inside, makes it to have the advantage that inflation is laborsaving, tightness is good.

Of the present utility model being characterised in that changed into the lower end of valve inside to the inlet hole on the valve inside sidewall, with the air-filled pore of valve inside upper end be an axis, and tapered, the mitre velve that matches with hole wall is arranged in the inlet hole of taper; Perisporium in the valve inside bottom has a circular groove, is with seal ring in circular groove; One U-shaped guard is arranged in the inlet hole outer end, and along the diameter of diameter less than the mitre velve bottom surface, the guard outer extends upward becomes clamp, can be stuck in the lower end of valve inside, and itself and valve inside are connected as a single entity in the U-shaped guard.

Accompanying drawing 1 is the structural representation of the designed Non-return air valve valve inside of the utility model, and accompanying drawing 2 is that designed valve inside is contained in the interior example schematic of vehicle tyre Non-return air valve.1 is the Non-return air valve body among the figure, and 2 is belleville washer, and 3 is gland nut, and 4 is stop nut, and 5 is the U-shaped guard, and 6 is mitre velve, and 7 is seal ring, and 8 is the valve inside body, and 9 for screwing nut, and 10 is dust cover.As can be seen from Figure, air-filled pore inflation from the valve inside upper end, air pressure is depressed mitre velve, and air-flow enters tire from inlet hole through guard, and the pressure in the tire is big more, then mitre velve just push up tightly more, airtight more, and owing to screw screwing of nut, make the valve inside body downward pressure be arranged, cause the evagination of seal ring the seal ring in the circular groove, thereby make more sealing between seal ring and the air valve inner body wall, this has just improved the tightness of Non-return air valve; In addition because the area of mitre velve end face is greater than the area manyfold of original valve inside inlet hole, so during inflation just than the laborsaving manyfold of original valve inside.And the utlity model has advantages such as simple in structure, that making is easy, and repair and replacement are convenient.

The use of the valve inside that the utility model is designed does not influence the form structure of original tire Non-return air valve, can certainly be used for other Non-return air valve.Its mitre velve and seal ring can adopt resilient material such as plastics, rubber, and the U-shaped guard can adopt plastics or metal to make.The inventor has made a sample by the utility model, installs on cycle tyre, and laborsaving, the good airproof performance of its inflation, three months are air tight, can normally use under ± 40 ℃ of environment.

Claims

1, a kind of valve inside of Non-return air valve is characterized in that: inlet hole is in the lower end of valve inside, with the air-filled pore of valve inside upper end be an axis, and tapered; The mitre velve that matches with hole wall is arranged in the inlet hole of taper.

2, valve inside according to claim 1 is characterized in that: the perisporium in the valve inside bottom has a circular groove, is with seal ring in the groove.

3, valve inside according to claim 1 and 2 is characterized in that: a U-shaped guard is arranged in the inlet hole outer end, and guard is interior along the diameter of diameter less than the mitre velve bottom surface.

4, valve inside according to claim 3 is characterized in that: its outer of described U-shaped guard extends upward and becomes clamp, can be stuck in the lower end of valve inside.