CN2149226Y

CN2149226Y - Back-stop type needle for inflating balls

Info

Publication number: CN2149226Y
Application number: CN 92241455
Authority: CN
Inventors: 梁秋生
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-11-14
Filing date: 1992-11-14
Publication date: 1993-12-15
Anticipated expiration: 2002-11-14

Abstract

The utility model discloses a back-stop type needle for inflating balls which is used for inflating the various balls. The utility model mainly comprises an air inlet (1), a needle head (6), rubber balls (4), springs (5), and rubber rings (2). The utility model has the automatic back-stop function, and the balls can be conveniently inflated by the common bicycle pumps. The air can not flow in the contrary direction during the period of pumping, and the quantity of pumping of the balls can be easily controlled by the utility model.

Description

Back-stop type needle for inflating balls

A kind of being used for to the ball special-purpose Aerating needle of the non-return of various ball inflations.

Well-known all kinds of inflatable ball is the air pressure that relies in the ball, keeps the elasticity of ball, so these ballly just need inflation through certain hour, and when inflation, known a kind of Aerating needle, it is that syringe needle is inserted in the spheroid, the air inlet of shank aligning inflator is inflated.Owing to do not have the gas check device in this Aerating needle, with when syringe needle inserts in the spheroid, if external inflator pump is not inflated in spheroid immediately, the phenomenon that residual air in the spheroid outwards flows backwards can appear on the contrary, and when inflation inflator pump must continuously in spheroid, inflate, being forbidden has air-breathing process, so known this Aerating needle significantly can not be inflated in ball with bicycle pump commonly used, and must use special-purpose air pump, and the syndeton of known air tube and inflator is not inconsistent the use inconvenience.

The purpose of this utility model just provides a kind of gas that can prevent and flows backwards, and can be arbitrarily inflates the ball special-purpose Aerating needle of non-return with general Bicycle inflator in spheroid.

The technical solution of the utility model is such: it is by air inlet, composition such as ball and spike body, the physical dimension of air inlet is directly applied for the gas outlet tieing size of general bicycle use inflator, can put clamping just with the bicycle pump clip, there is a taper fit face to contact at the lower end surface place of air inlet with ball, rely on the effect of special-purpose Aerating needle inner spring, make ball when not inflating all the time with the conical surface seal of air inlet lower end, make the gas in the ball not flow backwards here from the process air inlet is outside, when coming with common bicycle pump to ball inflation, because work as inflator in breathing process, ball in the special-purpose inflation envelope relies on the effect of spring and ball internal gas pressure, all the time ball internal gas pressure and import source are being sealed, gas can not be returned by suck-back, so bicycle pump commonly used can be used for ball inflation easily.

Figure one is a structure chart of the present utility model.

Below in conjunction with figure one explanation embodiment of the present utility model.Wherein, (1) is air inlet, and (2) are rubber seal, and (3) are steam vents, and (4) are that ball (5) is a spring, and (6) are syringe needles, and (7) are the gas outlets.Inner chamber at syringe needle (6) installs spring (5) earlier, the top of spring (5) be installed with ball (4) air inlet (1) by rubber seal (2) and syringe needle (6) with being threaded, ball (4) makes air inlet (1) contact sealing by spring pressure with the taper fit face of air inlet (1) bottom, lower side at air inlet (1) has steam vent (3), has gas outlet (7) in the lower end side of syringe needle (6).After syringe needle (6) inserted ball air inlet valve body, air inlet (1) clipped with bicycle pump first clip, and inflator is inflated, and pressure gas just promotes ball (4), and (7) are discharged in the spheroid from the gas outlet to have compressed spring (5).When inflator is air-breathing, because the effect of (5) and ball internal gas pressure lifts ball (4), closely cooperate with the conical surface of air inlet (1) bottom, prevented that from face gas refluence in the syringe needle from coming out.Adjust the blowing pressure in the spheroid if desired, as long as rotation air inlet (1), threaded engagement between it and the syringe needle (6) is loosened, then the steam vent (3) on (1) just can give off a part with the air pressure in (1), so just can easily regulate the pressure that spheroid gas makes, make aeration quantity can access control preferably.

Claims

1, a kind of being used for to the ball special-purpose Aerating needle of the non-return of various ball inflations, principal character of the present utility model is: special-purpose Aerating needle is made up of air inlet (1), syringe needle (6), spring (5), ball (4) and rubber ring (2), ball (4) contacts by the taper fit face of spring (5) with air inlet (1) lower end, keep sealing, the lower end side of air inlet (1) has the side of steam vent (3), syringe needle (6) lower end that the lower dimension of gas outlet (7) air inlet (1) is arranged, and guarantees to cooperate with the gas outlet clip of general bicycle pump is convenient.