CN2411355Y

CN2411355Y - Tyre automatic inflating device

Info

Publication number: CN2411355Y
Application number: CN 00207282
Authority: CN
Inventors: 蔡庆
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-03-28
Filing date: 2000-03-28
Publication date: 2000-12-20
Anticipated expiration: 2010-03-28

Abstract

The utility model relates to a tyre automatic inflating device which is composed of an air duct, a barrel body, normal pressure air chambers, a pressurization air chamber, a pressure maintaining air chamber, a one-way valve and a spring. Both ends of the barrel body are provided with the normal pressure air chambers. The pressurization is formed by the space between the barrel boy, an inflating piston and a guide sleeve and in the air duct with the one-way valve. The pressure maintaining air chamber which is formed by the space between the guide sleeve, a sliding sealing piston and the barrel body is communicated with the air duct passing through a pressure limiting spring. The utility model has the advantages of simple structure and long service life.

Description

Automatic tyre air inflation device

The utility model relates to a kind of automatic tyre air inflation device, particularly relates to a kind of utilization and inflates piston and slipper seal piston and finish automatic tyre air inflation device, is particularly suitable for the automatic inflation of bicycle.As everyone knows, the inflation of bicycle is manually to inflate mostly at present, the work trouble, make dirty during inflation hand or clothes are unhygienic.A part of for this reason technician studies bicycle automatic inflator, as CN2124828U, application number 92209133.1, a kind of bicycle inflator is disclosed, this device is actually a minitype pump is added an eccentric wheel and a pressure regulator valve composition that is fixed on the axletree, utilize piston rod to slide a week along an eccentric wheel outer rim, finish to push under the pump to draw and inflate action, realize inflating automatically, after wheel nausea abundance, when self-filler continued inflation, its pressurized air bled off by pressure regulating valve.This self-filler is simple in structure, implements easily, but has a fatal shortcoming to be, as long as by bike, no matter need inflation, always piston is being worked, the cyclist feels effort, work long hours owing to piston simultaneously, quick abrasion, the life-span is short, makes troubles to the Consumer again, not handy, so do not see so far on the market.The bicycle automatic inflator of CN2216008Y, ZL94209685.1 and CN2255509Y, two kinds of patents of ZL96214123.2 in addition, its working principle and above-identified patent application are similar, its shortcoming roughly the same, complex structure, is not easy to implement at the cost height.

The purpose of this utility model is to design when a kind of tire need be inflated to inflate automatically, can stop inflation after the gas abundance automatically, and piston quits work, and makes the cyclist feel laborsaving, and structure is simpler, the novel self-filler that the life-span is long.

The utility model is achieved in that a kind of automatic tyre air inflation device, contain air pipe, cylindrical shell, the normal pressure air chamber, the supercharging air chamber, the pressurize air chamber, one-way valve, spring, at cylindrical shell and two end cap and the piston of inflating, the space that forms between the slipper seal piston, constitute the normal pressure air chamber, at the cylindrical shell and the piston of inflating, guide sleeve and have the space that forms between the air pipe that one-way valve is fixed on the slipper seal piston with guide sleeve cooperates, constitute the supercharging air chamber, Returnning spring is installed in inflates between piston and the guide sleeve, flexible strand one end is fixed on the air pipe end face, passing Returnning spring is fixed on the spring other end, at cylindrical shell, the space that forms between guide sleeve and the slipper seal piston, constitute the pressurize air chamber, this chamber and suit pressure limiting spring, the air pipe that is fixed on the slipper seal piston another side is communicated with, and air pipe passes end cap, receive on the joint of inner tube valve inside, connecting rod or connecting leg one end are slidingly matched with the eccentric wheel outer rim that is fixed on the wheel axle; The other end passes end cap and enters in the cylindrical shell, and its termination is fixed with elastomer, and inflates piston and contacts.

The pressurize air chamber is communicated with by the air pipe that the inclined hole on the slipper seal piston is connected with the inner tube valve inside, there is the slip elastic sleeve to be sealed and matched between air pipe and the guide sleeve, porose on this air pipe, be set with elastic seal cartridge at its tapping, constitute one-way valve, on the cylindrical shell two end cap, have the hole, the connecting rod wheel that the band groove is equipped with in the end of connecting rod or connecting leg cooperates with the eccentric wheel outer rim, connecting rod or connecting leg pass the positioning wheel lasso and coincide with positioning wheel outer rim groove, positioning wheel is installed on the end cap, the big end side surface of guide sleeve and last, lower cylinder body is affixed, the air pipe that is sleeved in the pressure limiting spring passes end cap, porose on the pipe, constitute unidirectional pressure regulator valve in tapping suit pressure limiting elastic sleeve.

Set up the stage casing cylindrical shell, it is connected with the big end side surface of guide sleeve, and cylindrical shell upper end in stage casing is connected with upper cylinder, and middle cylindrical shell lower end is connected with lower cylinder body.

The utlity model has good effect, relatively simple for structure, cost is lower, available molding and forming, simple, the enforcement easily of production technology.After interior nausea abundance, the slipper seal piston can start compression pressure limiting spring, packed-piston moved and drove the slide rope tension compression reseting spring that affects pipe end of the air pipe that has one-way valve in the cylindrical shell and slowly be compressed to and be in that impaction state is static relatively to get off this moment, the piston of inflating slides synchronously along the elastic compression direction under the effect of connecting rod, until the top, the piston of inflating quits work, and does not continue inflation, connecting rod is only reciprocating, does not drive to inflate piston; After interior air pressure drops to certain pressure, the slipper seal piston slowly resets under the pressure limiting spring action, this moment, rope loosened, and Returnning spring slowly recovers the origin-location, and the piston of inflating contacts the recovery to-and-fro motion by the elastomer recovery with connecting rod or pipe and enters inflated condition; Because the piston of inflating can remain static after charging gas the long period relatively, the operating time is short, and the life-span is long, and it is laborsaving by bike, comfortable that the user feels, accepted by the people easily, exploits market; Another advantage of the utility model is: when the car inner tube of a tyre loses heart slowly, still can continue to walk by bike, be adapted to vast rural area and use, will provide convenience to the travel on bike of going out, rural area, mountain area bicycle user.

Fig. 1 is an automatic tyre air inflation device general assembly structural representation;

Fig. 2 is a packed-piston sectional structure schematic representation;

Fig. 3 is for inflating piston sectional structure schematic representation;

Fig. 4 is flexible strand and Returnning spring connection diagram.

Embodiment one, referring to Fig. 1,2,3,4, among the figure, 1 can be the axletree of axle for bicycle or other car for axletree, 2 is eccentric wheel, be fixedly set on the axletree, 3 are the connecting rod wheel, be packed in the end of connecting rod (pipe), the groove of connecting rod wheel outer rim matches with eccentric wheel 2 outer rims, and 4 is connecting rod (pipe), connecting rod (pipe) the other end passes end cap and passes through fixedly elastomer 6 of end pallet, 5 for positioning wheel is installed on the end cap, connecting rod (pipe) 4 pass the location on the pulley 5 lasso and the groove fit of pulley outer rim, 7 for inflating piston, 8 for being sleeved on the O type circle on 7, O type circle one side has mutually perpendicular four fins to contact with a plane contact another side and plane, when inflating, and O type circle and plane contact, form sealing, piston is when other direction moves when inflating, and O type circle slides to another side and erected by four fins on the plane, and air flows to the pumping chamber by two rib cracks between adjacent.9 is cylindrical shell, is divided into upper cylinder and lower cylinder body, and 10 is guide sleeve, and the big end side surface of guide sleeve is fixedlyed connected with upper and lower cylindrical shell by screw thread, and seal ring is arranged on the mating face, does not mark on the figure.Between piston 7 and the guide sleeve 10 Returnning spring 11 is installed inflating, stay cord 12 1 ends fixing with inflate the spring top of piston one side, the other end is fixed on air pipe 13 tops, air pipe 13 cooperates with guide sleeve by elastic sleeve 14 and is fixed on the slipper seal piston 15, air hole 16 is arranged on the air pipe 13, be with elastic sleeve 17 on the hole, constitute one-way valve, air can only release the pressurize chamber by air pipe 13.Seal ring 18 is installed on the slipper seal piston 15, or on the use O type circle packed-piston inclined hole 19 is arranged, pressurize chamber 27 and air pipe 21 are communicated with.Air pipe 21 1 ends are fixed on the packed-piston 15, pass pressure limiting spring 22, pass end cap 24, the valve inside of the other end and wheel is connected and fixed, and is communicated with inner tube, and air hole 23 is arranged on the two

ends end cap

24,25 is the normal pressure air chamber, and 26 are the supercharging air chamber, and 27 are the pressurize air chamber.For reducing cost, reduce mould, two end cap can be respectively and the injection moulding of last lower cylinder body one.

This self-filler is automatic slowly inflation in garage advances, so, when slight crack is longer, then can't use the inflation of this device when the inner tube of a tyre does not have gas and inner tube of a tyre explosion fully, must could use this self-filler with after pump or the inflation earlier of other inflation mechanism.

Embodiment two, and present embodiment is basic identical with embodiment one, somewhat differently are, pressurize chamber lengthening, increase the stage casing cylindrical shell, and each numbers consistent with embodiment, does not heavily chat.Do not draw view.

Claims

1, a kind of automatic tyre air inflation device, contain air pipe, cylindrical shell, the normal pressure air chamber, the supercharging air chamber, the pressurize air chamber, one-way valve, spring, feature of the present utility model is: at cylindrical shell and two end cap and the piston of inflating, the space that forms between the slipper seal piston, constitute the normal pressure air chamber, at the cylindrical shell and the piston of inflating, guide sleeve, and have a space that forms between the air pipe that one-way valve is fixed on the slipper seal piston with guide sleeve cooperates, constitute the supercharging air chamber, Returnning spring is installed in inflates between piston and the guide sleeve, flexible strand one end is fixed on the air pipe end face, passing Returnning spring is fixed on the spring other end, at cylindrical shell, the space that forms between guide sleeve and the slipper seal piston, constitute the pressurize air chamber, this chamber and suit pressure limiting spring, the air pipe that is fixed on the slipper seal piston another side is communicated with, air pipe passes end cap, receive on the joint of inner tube valve inside, connecting rod or connecting leg one end are slidingly matched with the eccentric wheel outer rim that is fixed on the wheel axle, the other end passes end cap and enters in the cylindrical shell, its termination is fixed with elastomer, and inflates piston and contacts.

2, according to the described device of claim 1, it is characterized in that: the pressurize air chamber is communicated with by the air pipe that the inclined hole on the slipper seal piston is connected with the inner tube valve inside, there is the slip elastic sleeve to be sealed and matched between air pipe and the guide sleeve, porose on this air pipe, be set with elastic seal cartridge at its tapping, constitute one-way valve, on the cylindrical shell two end cap, have the hole, the connecting rod wheel that the band groove is equipped with in the end of connecting rod or pipe cooperates with the eccentric wheel outer rim, connecting rod or pipe pass the positioning wheel lasso and coincide with positioning wheel outer rim groove, positioning wheel is installed on the end cap, the big end side surface of guide sleeve and last, lower cylinder body is affixed, the air pipe that is sleeved in the pressure limiting spring passes end cap, and is porose on the pipe, constitutes unidirectional pressure regulator valve in tapping suit pressure limiting elastic sleeve.

3, according to claim 1 or 2 described devices, it is characterized in that: set up the stage casing cylindrical shell, it is connected with the big end side surface of guide sleeve, and cylindrical shell upper end in stage casing is connected with upper cylinder, and cylindrical shell lower end, stage casing is connected with lower cylinder body.