CN2088187U - Piston-type inner tube valve for manpower vehicles - Google Patents

Abstract

The utility model discloses a piston-type inner tube air valve for manpower vehicles, which belongs to the inflating component of transport vehicle class. The utility model is particularly suitable for bicycles and manpower vehicles. The inner hole of an air valve is processed with a lug boss plane which is provided with a piston pad, a piston, and a spring, and the three components are blocked at the inner hole of the air valve by plugs. When inflating, the air pressure compression springs form air passages; when the inflating is stopped, the air passages are sealed because of the functions of the air pressure in the inner tube and the springs. Because of the sealing of the lug boss plane and the piston pads, the sealing effect is improved, and the process difficulty and the producing cost are reduced. Through the probation on the bicycles, the sealing effect is increased 3 to 5 times than the existing air valve. The longest time is 53 days during which the bicycles need no inflating.

Description

Piston-type inner tube valve for manpower vehicles

The utility model belongs to haulage vehicle class inflating element, and the inner tube of a tyre inflation that is specially adapted to bicycle, rickshaw is used.

At present, the valve cock of the inner tube of a tyre of bicycle, rickshaw inflation usefulness all is made up of parts such as mouth body, valve inside, pressure core nut, hose, garden nut, hexagon nut, pad, protective hats.The sealing of the valve cock of being made up of these parts mainly matches and seals by being with the cone boss that is provided with a rubber cone boss and valve inside in hose and the mouth body endoporus on the valve inside.The pressure that this seal form, hose are inflated and constantly expand and contract.Reasons such as hose is easily aging, the bicycle and the rickshaw inner tube of a tyre gas of substituting the bad for the good does not need how long just to run through gas, needs inflation again again.Simultaneously, the processing of cone boss in the mouth body and valve inside external conical shape boss is comparatively difficult.Because these deficiencys of textural existence of existing valve cock just need to improve.

The purpose of this utility model will design a kind of difficult deflation, good seal performance exactly, and easily processing, valve cock that cost is low.

The technical solution of the utility model is to be processed into a boss plane in the endoporus of mouth body.Piston pad, piston, spring are housed on the boss plane, and piston pad, piston, spring are got lodged in the endoporus of mouth body by plug.Concrete scheme resembles shown in Figure 1.One boss plane is arranged in the endoporus of mouth body (2), piston pad (4), piston (6), spring (7) are housed on the boss plane, and piston pad (4), piston (6), spring (7) are got lodged in the endoporus of mouth body (2) by plug (9).It is to be pressed on the inner tube of a tyre (11) by the big knob of mouth body (2) and hexagon nut (8), pad (10) that this valve cock is installed on the inner tube of a tyre (11), garden nut (5) is that mouth body (2) is pressed on usefulness on the rim, garden nut (3) is used for fixing the pump mouth and valve cock matches and usefulness, and garden nut (1) is that protection is used.During inflation, turn on garden spiral shell (1), connect inflator and just can inflate.During inflation, air-flow compressing piston pad (4), piston pad (4) compressing piston (6), piston (6) pressuring spring (7), spring (7) is under pressure and just withdraws, and piston pad (4), piston (6) are also return thereupon, this just forms air flue, just inflation in the inner tube of a tyre (11).When stopping to inflate, the air pressure in the inner tube of a tyre (11) and the effect of spring (7) make piston pad (4), piston (6) push the boss plane to.Sealed air flue, air flue was just logical when this had just reached inflation, and air flue is with regard to sealed purpose when stopping to inflate.

The utility model is compared with present bicycle, the used valve cock of rickshaw.Because changed original conical surface seal is plane sealing, and processing is wanted easily.Piston pad increases than hose thickness in addition, and ageing time also increases, and has improved working life, on the whole, has reached and has reduced the purpose that manufacture cost has improved sealing effect.

Embodiment: piston pad (4) adopts butyl rubber, and piston (6) adopts brass, and the outer garden diameter of piston pad (4) and piston (6) is less than the diameter of bore of mouth body (2).The sealing effect of this model utility, through on probation on bicycle, than the long 3-5 of present valve cock times, the longest reach 53 days non-inflatable.

Claims (1)

1. A kind of piston type cycle tube valve cock of forming by parts such as mouth body, garden nut, pad, hexagon nuts, it is characterized in that: in the endoporus of mouth body (2), be processed into a boss plane, piston pad (4), piston (6), spring (7) are housed on the boss plane, and piston pad (4), piston (6), spring (7) are got lodged in the endoporus of mouth body (2) by plug (9).