CN2474370Y - Inflation apparatus for tyre - Google Patents

Abstract

A novel tire aerator is mainly composed of an outer casing, an air doom casing, a hand cam, an overhead-valve of air valve, a sealed circle, a connecting body and the like. The utility model uses the sealed circle which is additionally arranged inside the connecting body of the bottom of the outer casing and a screw which is provided at the lower portion to achieve screw up and sealing with a charging connector of tire. The connecting body is connected with the air doom casing via a rubber sealed circle of air doom, achieving sealing of the plenum chamber. The utility model employs a spring which is arranged inside the air doom casing to quickly close an air gate in the time that air inflation is finished. The utility model avoids air-return according to the employment of a suction nozzle structure of normal bicycle which is provided in an air inlet port of tire aerator. The utility model has the advantages that the structure is compact, the degree of reliability is high, and the tire aerator can solve the worries of daily air inflation of wide motor-bicycle owner.

Description

A kind of novel tire aerator

The utility model relates to a kind of device that is used for inflation of tire.

We are motor bike or bicycle inflation in experience every day, but the inflation of tire mouth structure of motor bike and bicycle is different, can be with the inflation of general bicycle pump to bicycle, motor bike then must special-purpose gas filled device, can not deal with problems with bicycle pump.At present, many gas filled devices of inflating for motor bike are arranged on the market, the comparatively popular high-pressure aerated dop of a kind of cam-type (patent No.: 87205222), in this utility model structure, seal ring is enclosed within on the screwed surface of charging connector, when work, make its radial deformation by external force crush seal circle, the radial deformation direction of rubber seal is orthogonal with being subjected to force direction, this will inevitably cause sealing effectiveness desirable not to the utmost, and the rubber seal inside face contacts repeatedly with screw thread, extruding makes that the rubber seal inside face is easy to be leaked gas by fatigue damage, causes losing efficacy; The thread surface of its selection is also unreasonable as sealing surfaces; In addition, the admission piece of this utility model does not have non-return structure, and the return-air phenomenon is serious when the approaching abundance of tire, is difficult to reach specified air pressure, and the inflation effect is bad.

The utility model purpose provides that a kind of to solve sealing effectiveness bad, the novel tire aerator of fatiguability damage, gas leakage and return-air.

The utility model is to realize like this, a kind of novel tire aerator, it is mainly by shell, gas chamber shell, manual cam, the air valve thimble, seal ring, compositions such as admission piece, the gas chamber shell suit in the enclosure, manually cam is hinged on shell upper, manually the driving surface and the gas shell chamber upper end of cam contact, gas shell chamber interior middle position is equipped with the air valve thimble, gas chamber shell one side is equipped with admission piece, this tire admission piece stretches out from the U-lag of shell, at outer casing bottom suit connector, the flange portion of connector is stuck in outer casing bottom and becomes running-fit with shell, connector is a hollow structure, the bottom is processed with negative thread, in this screw, place the connector seal ring, connected body is tightened by the admission piece of screw thread and tire, the gas chamber shell lower end is pressed on the air chamber seal ring, the sealing snare is contained in the upper end of connector, spring is housed in gas chamber shell, this spring is pressed in the upper surface of connector, the air valve thimble that is installed in the gas chamber shell passes through the middle hole of connector, back down tire valve, the structure of admission piece is identical with the structure of ordinary bicycle admission piece, comprise the admission piece nut, valve inside, the admission piece body, valve inside rubber can prevent the gas leak in the air chamber effectively.

Accompanying drawing 1 is a scheme drawing of the present utility model.

Describe in detail below in conjunction with accompanying drawing, with reference to accompanying drawing 1, earlier connector 7 is tightened on the motor cycle tire charging connector, so seal ring is pressed on the upper surface of inflation of tire mouth, depress manual cam 12, gas chamber shell 11 is to lower slider, the air valve thimble backs down inflation of tire mouth valve thereupon, simultaneously, air chamber seal ring 6 is pressed in the lower surface of gas chamber shell 11, and the air chamber seal ring is pressed on again on the outward flange of connector 7, has realized the sealing to air chamber, air chamber pull back spring 13 is compressed at this moment, and common Floor Pump is connected and can puts on the air with admission piece 1.After the gas abundance, lift manual cam, under the common promotion of pull back spring 13 and air chamber seal ring 6, gas chamber shell 11 upwards slides, and air valve thimble 10 lifts simultaneously, and the valve of charging connector 1 is closed rapidly, finishes inflation.

The utility model because design has connector and adopt the mode that is threaded to be connected with the inflation of tire mouth, makes connection more firm, be provided with two seal rings, and seal direction, deformation direction and be subjected to force direction consistent, not fragile, good sealing effect, the life-span prolongs greatly.The admission piece structure adopts the ordinary bicycle charging connector, has promptly avoided return-air, again can with common Floor Pump direct connection, pull back spring makes Tyre air valve close rapidly, has avoided the too much problem of tire flat when the dismounting inflatable tool.Of the present utility model applying will solve the difficult problem of inflation for many years for vast motor bike user.

Claims (4)

1, a kind of novel tire aerator, it is mainly by shell (5) gas chamber shell (11), manual cam (12) air valve thimble (10), seal ring (9) admission piece compositions such as (1), gas chamber shell (11) is sleeved in the shell (5), manually cam is hinged on shell (5) top, manually the driving surface and the upper surface, gas shell chamber (11) of cam (12) contact, gas shell chamber (11) central interior is equipped with air valve thimble (10) gas chamber shell (11) one sides admission piece (1) is installed, this admission piece stretches out from the U-lag of shell (5), it is characterized in that passing from shell (5) bottom circular hole for a part at shell (5) bottom suit connector (7) connector (7), the connector flange portion is stuck in shell (5) bottom and becomes running-fit with shell (5), connector (7) is a hollow structure, and the endoporus of connector (7) bottom is equipped with seal ring (9) connector (7) flange top and seal ring (6) gas chamber shell (11) is housed is pressed on the seal ring (6).

2, a kind of novel tire aerator according to claim 1 is characterized in that being equipped with the upper end of spring (13) spring (13) in connector (7) in gas chamber shell (11).

3, a kind of novel tire aerator according to claim 1 is characterized in that the endoporus of connector (7) bottom is a screw, and connector is tightened on the motor bike charging connector by this screw.

4, a kind of novel tire aerator according to claim 1 is characterized in that the structure of admission piece (1) of this tire inflator is identical with the structure of ordinary bicycle admission piece.