CN2146625Y - Push-button intake one-way valve - Google Patents

Abstract

The utility model discloses an intake one-way valve having a locking function, which is used for gas-filled type appliances. The intake one-way valve having a locking function is provided with a push-button sliding block and a safety nut for locking the position of the sliding block. The intake one-way valve with a locking function can be opened by a finger pressing the sliding block down; when the finger is released, the sliding block can be reset by the spring force, and thereby, the intake one-way valve having a locking function is closed. The pressed position or the reset position of the sliding block can be locked by the safety nut. Therefore, the intake one-way valve having a locking function has the advantages of convenient inflation and deflation, good air tightness, and safety.

Description

Push-button intake one-way valve

The utility model relates to the suction valve of using on the inflatable appliances, is specifically related to the breather check valve of lock function.

At present, still use the valve of no non-return valve function on some inflatable appliances, thus have many gas leakages during inflation bonnet stopper, in case unexpectedly stopper is bumped out, gas more can one be let out, and can not be used in the demanding inflation class of safety garment and so on tightness Life Saving Apparatus.In order to prevent reverse gas leakage, have the breather check valve that uses on the multiple inflatable appliances on the market now, wherein a kind of is to utilize spring to apply sealing force, prevent reverse gas leakage, it has and is roughly valve body tubulose, that be provided with sealing plane and is enclosed within valve body one end, can makes axially movable valve head by relative valve body, spool is arranged in the valve body, be inlaid in seal ring and the stronger Returnning spring of elastic force on the sealed end of spool.When being subjected to external force, this valve do not do the time spent, the sealing plane that spring force makes seal ring be close to valve body forms face seal, and make valve head when seeing that valve body is passed certain distance when firmly pushing, spool just overcomes spring force and is pushed, thereby make seal ring leave the sealing surface of valve body, this moment, air valve was opened, and can fill, exit the air heave type utensil; When charging gas when no longer pushing valve head, spring force makes valve core reset, and the sealing surface that seal ring just is adjacent to valve body forms face seal.Because spring force is stronger, even this gas-filled type utensil is collided in use, in the ordinary course of things valve head also not relatively valve body do displacement, can not leak gas so air valve also can not be opened promptly, Security is better.But, just, must just can open air valve, and opening state can't lock with stronger power because the spring force of this air valve is stronger, so it is very inconvenient to fill, exit, at first be very difficultly air valve to be opened with a hand.Secondly in the time of for example will blowing with mouth, valve head on one side must bite with the teeth, push to the valve head direction with the handgrip valve body on one side, obey spring force with bigger making every effort to overcome and just can open air valve, and firmly keep this pushing state to inflate with mouth, in case pushing the openhanded of valve body opened, spring force just can make air valve cut out and can not continue inflation.Also must press valve head and valve body respectively during venting with two hands.So untrained ordinary people is difficult to grasp the operating method of filling, exitting.Have again,,, will influence airtight effect if factors such as spool run-off the straight cause the seal ring run-off the straight because the sealing surface of valve body is the plane.

In view of the foregoing, the purpose of this utility model is, the breather check valve that provides a kind of gas-filled type utensil to use, not only the tightness better and safer is reliable for this valve, can be used in first aid or tonifying Qi equipment such as safety garment, and have lock function and easy to use, as long as once touching the button valve is opened with a hand, the ordinary people just can fill without training, bleed air operation.

A kind of push button breather check valve that the utility model provides has: be roughly the valve body of tubulose, an end of this valve body is provided with the outside hemispherical Seal cage of opening; Be fixed on the valve head of the valve body the other end; Spool along the axial setting of valve body; Be installed in the seal ring on the sealed end of spool; Be fixed on the valve core cap of the crown spool the other end, that have epirelief portion; The seal ring Returnning spring that spool and seal ring are resetted; As the slide block that is convexly set in valve head one side like the button, crown portion one side that the inboard end of this slide block protrudes out valve core cap forms a plush copper, and the outboard end of slide block is provided with the card corresponding with following lock nut and only uses flange; Be located at the slide block Returnning spring of slide block inboard; Be set near the lock nut on the valve head of slide block.

Push button breather check valve described in the utility model is owing to have as above structure, so when to fill, when exitting, as long as pinch this valve with a hand, and with the finger presses push button slide block of this hand, make slide block antagonistic spring pressure and do radial displacement and then promote spool by the plush copper of slide block, just can open air valve, screw on lock nut again and make the locking of slide block state, can decontrol hand exits or inflates, unscrewing nut resets by slide block, and with lock nut locking, just can guarantee air tightly, use not only convenient but also safety.

The effect of breather check valve of the present utility model and effect are described further by the following drawings and embodiment.

Fig. 1 is that embodiment of the utility model is the sectional drawing of breather check valve when airtight locking.

Fig. 2 is that breather check valve shown in Figure 1 is at opening of valves and the phase diagram when locking.

Fig. 3 is the plan view of breather check valve shown in Figure 1.

As shown in Figure 1, be roughly in the end of valve body (1) of tubulose and be provided with outwardly open hemisphere Seal cage (11), spool (2) is along the axial setting of valve body (1), its lower end is stretched in the Seal cage (11) and rubber seal (3) is installed and forms sealed end, its upper end is installed with valve core cap (21) by groove, valve core cap (21) raises up and forms the crown portion of diameter less than valve block internal diameter, stretch out 4 supporting ribs downwards from crown portion across ground, make crown portion can remain on the substantial middle position of body cavity.Seal ring Returnning spring (4) is sleeved on the spool (2), the one end is resisted against on the valve core cap (21), the other end is resisted against on the valve body (1), thereby spool (2) is upwards drawn all the time in company with seal ring (3), and make seal ring (3) be the hemisphere capsule walls that valve body (1) is close on linear sealing ground.The valve head (5) that the upper end of valve body (1) is being threaded and is being roughly tubulose, the approximate mid-section one side setting-in of valve head (5) the slide block (6) of push button, the inboard end of slide block (6) protrudes out the other plush copper (61) that forms of cap top side of valve core cap (21) downwards, the end face of plush copper (61) is one along inclined-plane that the direction of the crown portion of valve core cap (21) is extended, the outboard end of slide block (6) is provided with slide block lid (62), slide block lid (62), be positioned at lock nut (9) one sides and be provided with only flange (63) of card, the inboard of slide block (6) is installed with slide block Returnning spring (8) and slider guide bar (7).Outside thread is arranged at the bottom of valve head (5), is bolted with lock nut (9), and the card that the inside top of lock nut (9) is provided with annular ends groove (91).

When to fill, when exitting, lock nut among Fig. 1 (9) is ended flange (63) to backspin until making it break away from card, hand is pinched air valve and is pushed slide block (6) with finger along direction shown in the arrow A then, make slide block (6) overcome spring force side shifting inwards, the end face of its plush copper (61) just pushes valve core cap (21) and makes spool (2) and the rubber seal (3) that is contained on the spool (2) moves down by valve core cap (21), thereby makes opening of valves.Upwards revolve lock nut (9) again, allowing the card of slide block (6) end the card that flange (63) embeds lock nut (9) ends in the groove (91), the position of slide block (6) so locked (seeing shown in Figure 2), even finger is decontroled air valve and is also being opened, can fill easily, exit, so easy to operate.Finish as inflation, need only lock nut (9) to backspin, because the active force of Returnning spring (8) and (4), slide block (6) is reduction of spondylolisthesis outwards, spool (2) and seal ring (3) move up and reset, recover airtight conditions, upwards be threaded to airtight locked position shown in Figure 1 to lock nut (9) this moment again, because having blocked card, lock nut (9) ends flange (63), make slide block (6) even be subjected to colliding side slip inwards, thereby guaranteed the airtight conditions of breather check valve.In addition, because the Seal cage of valve body (1) is outwardly open hemispherical, so when gas-filled type utensil internal air pressure is very high, also only can push seal ring (3) to such an extent that more compress the internal face of Seal cage (11), and will never make valve open and leak gas, even spool run-off the straight, seal ring (3) also still can be adjacent to hemispheric Seal cage internal face, so good air-tightness and Security are arranged.

Because the tightness Security is good, this breather check valve can be used in emergent and tonifying Qi equipment waterborne such as air jacket, inflatable lifesaving valve, also can be used for other various inflation utensils certainly, for example Healthy aerating mattresses or the like.

In the above-described embodiments, the slide block lid (62) of flanged pin (63) has been installed on the slide block (6), but if the fit on permission, flange (63) also can be integrally formed with slide block (6).

In the above-described embodiments, lock nut (9) is provided with card to be ended with groove (91), but also can not establish groove, and the pockets of flange (63) is set on valve head (5), or the slide block mounting hole of increasing valve head (5), allow flange (63) enter and allow lock nut (9) block in the slide block mounting hole, equally can be with the filling of slide block (6), deflated state locking.

In the above-described embodiments, slide block Returnning spring (8) has adopted helical spring and has led with guide rod (7), but also can adopt other springs, and for example flat spring just no longer needs guide rod at that time.

Claims (2)

1, a kind of push button breather check valve has: be roughly tubulose, be provided with the valve body (1) of Seal cage (11), be sleeved on the valve head (5) of valve body (1) one end, spool (2) along the axial setting of valve body, be located at the seal ring (3) on the sealed end of spool (2), the Returnning spring (4) that spool (2) and seal ring (3) are resetted, it is characterized in that, described valve body (1) is fixedlyed connected with valve head (5), described Seal cage (11) is the outside semi-spherical shape of opening, the other end of described spool (2) is installed with the valve core cap (21) of the crown portion with epirelief, have in addition: as the slide block (6) that is convexly set in valve head (5) one sides like the button, crown portion one side that the inboard end of this slide block (6) protrudes out valve core cap (21) forms a plush copper (61), and the outboard end of slide block (6) is provided with the card corresponding with following lock nut (9) and ends flange (63); Be located at the slide block Returnning spring (8) of the inboard of slide block (6); Be sheathed near the lock nut (9) on the valve head (5) of slide block (6).

By the described push button breather check valve of claim 1, it is characterized in that 2, the card that nearly slide block (6) the side inwall of described lock nut (9) is provided with annular ends with groove (91).

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