CN2347003Y

CN2347003Y - Bicycle valve inside with locking piece

Info

Publication number: CN2347003Y
Application number: CN 98242569
Authority: CN
Inventors: 尤富
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-10-31
Filing date: 1998-10-31
Publication date: 1999-11-03
Anticipated expiration: 2008-10-31

Abstract

The utility model discloses a bicycle air valve with a locking device, which comprises a front connecting pipe and a tubular air valve body. The utility model is characterized in that the bolt head of a screw bolt whose end head extends out of the through hole of the back end of the air valve body is arranged in the through hole of the tubular air valve body, and a sealing washer is arranged between the bolt head and the inner cavity wall of the through hole of the back segment of the air valve body. The end head of the screw bolt is extended out of the through hole of the back end of the air valve body and is fixed and locked by nuts. The utility model has the advantages of reliable sealing performance, high durability, low cost, simple technology and manufacture, strong practicability, good universal interchange ability, etc., and air does not easily leak. The utility model can be widely used for various tyres of bicycles, tricycles, flat cars, boosted cars, light motorcycles, etc., and various tyres are filled with air manually.

Description

Tight bicycle valve core with lock

The utility model relates to bicycle valve valve, especially a kind of bicycle valve core of tight device with lock.

The valve inside that present bicycle uses is the straight-through type core body, and injecting hole is opened on the core body sidewall, utilizes the small rubber hose that tightly is enclosed within the core body outer wall to realize non-return valve function, the also double as sealing of its epimere.Because small rubber hose is easily aging and easily cause its breakage at the air inlet position differential expansion, causes tire to lose heart or gas leakage, influence is normally used.

The disclosed bicycle valve core without small rubber hose of Chinese patent CN2227773Y, by the tubular core of preceding adapter and band through hole and be prong shape afterbody and be located in this through hole, the stem that is cone is stretched out the one-way valve formation the core body through hole outside.Though this patent has overcome the easily aging shortcoming that causes tire gas leakage with injecting hole place cracky and lose heart of small rubber hose, one-way valve preparation process difficulty is big and too high to the sealing material required precision, so cause the sealability reliability relatively poor.

The purpose of this utility model be to provide a kind of improved, sealability is reliable, preparation process is simple and working life the bicycle valve core of long tight device with lock.

The purpose of this utility model is to realize like this, the through hole of tubular core is built-in with the bolt head that the termination extends in the outer sealing bolt of core back-end through hole, be equipped with seal washer between the internal chamber wall of this bolt head and core body rear part through hole, extend in the nut fixing and locking of the outer bolt end of core back-end through hole by the band air drain.

Compared with prior art, the utlity model has following advantage:

1. locking device structure and the oil-resistant rubber ring owing to the employing uniqueness is used, thereby makes its sealability reliable, durable in use, prolongs its working life greatly.

2. owing to do not use small rubber hose, thereby reduced the inflation resistance, inflation seems light, quick, time saving and energy saving; And because good seal performance, difficultly let out, leak gas, thereby also can reduce inflation times, be very easy to the user.

3. the part of the utility model product can be plastics, rubber product more than 70%, only stressed member is a metallic material, and not only cost is low, and preparation process is simple, assembling is easy, and quality is controlled easily, is convenient to produce in enormous quantities.

4. general interchangeability is good, and Applicable scope is big.Use the utility model product need not change other parts of former car, former valve inside and its exchange need only be got final product.Product is practical, can be widely used in bicycle, the various tires that tricycle, flatcar, light cavalry's motorcycle, motor-helping car etc. are inflated with manpower.

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is the utility model structural representation;

Fig. 2 connects the nested structure schematic representation for inflation.

Referring to Fig. 1.The core body 1 that present embodiment adopts is a tubular plastic spare, the leading portion through-hole diameter is bigger in the core body 1, the rear part through hole diameter is smaller, bolt 2 is gone into from the front end through hole skewer of core body 1, before its bolt head placed the inwall of rear part through hole, the rear part through hole that core body 1 is then prolonged in the termination stretched out at rear part through hole external application nut 5 fixing and lockings.Be provided with seal washer 3 between the bolt head of bolt 2 and the rear part through hole inwall.Radially be provided with an air drain on the front-end face of nut 5, gas can be injected in the core body 1 more easily when being convenient to inflate, thereby makes inflation more laborsaving.Take over 4 through-hole diameter before the working of plastics than the smaller skewer people of core body 1 through hole core body 1 front end through hole internal fixation, form inner chamber 7 between the end face that its skewer is gone into part and the core body 1 rear part through hole internal chamber wall, make the bolt head of bolt 2 can activity in this inner chamber 7.

The rearward end of core body 1 is provided with screw thread, can connect cover 8 with dust cap 6 and inflation and alternately be used.When needs are inflated, screw on inflation and connect cover 8.Substitute the bad for the good behind the gas, dust cap 6 is changed screwed.

The front-end face that inflation connects cover 8 (see figure 2)s is axially arranged with groove, and the built-in seal washer 9 of groove is to prevent to inflate time gas leakage.Wherein the leading portion outer rim is provided with groove, and the clip of being convenient on the inflator pump air injection opening is fixed with it.

This valve inside can also two combine into one with being located at mouth body on the bicycle inner tube, makes an integral body, thereby make structure simpler.

Claims

1. the bicycle valve core of a tight device with lock, comprise preceding adapter (4) and tubular core (1), it is characterized in that: the through hole of tubular core (1) is built-in with the bolt head that the termination extends in the outer sealing bolt (2) of core body (1) rear end through hole, be equipped with seal washer (3) between the internal chamber wall of this bolt head and core body (1) rear part through hole, extend in the termination of the outer bolt (2) of core body (1) rear end through hole, by nut (5) fixing and locking.

2. a kind of valve inside according to claim 1 is characterized in that: radially be provided with an air drain on the front-end face of described nut (5).