CN2293660Y

CN2293660Y - Bidirectional air intake inflater

Info

Publication number: CN2293660Y
Application number: CN 96249816
Authority: CN
Inventors: 杨熺宫
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-12-31
Filing date: 1996-12-31
Publication date: 1998-10-07
Anticipated expiration: 2006-12-31

Abstract

The utility model relates to an inflator with a simple structure, which can intake air at double directions and continuously discharge air at a single direction. One end of an inflator body 1 is a closed end 12. The inner surface of the closed end clamps a film 11 at a fixing point 14. The other end of the inflator body is an opening end 13. A cover body 2 is connected with the opening end of the inflator body. The inner surface of the cover body clamps a film 21 at a fixing point 24. The cover body and the closed end of the closed end are both provided with a plurality of air inlets 16, 26. The two films both can cover over the air inlets on both ends of the inflator body. The cover body is provided with a center hole 22 for a hollow piston rod 3 to penetrate. A piston 4 is connected with the inner end of the piston rod. The periphery of the piston is provided with a ring groove 41 which is provided with a through hole 42 which is communicated with the inner of the piston rod. A stopping ring 44 is sheathed on the ring groove. A pumping-pulling head 5 is connected with the extension end of the piston rod. The inner of the pumping-pulling head is connected with an air outlet 51 at the outside and a back valve 52 at the inside. The back valve is communicated with the inner of the piston rod.

Description

Two-way air intake inflator

The utility model relates to a kind of pump.

Common pump is the unidirectional pump of giving vent to anger of a kind of unidirectional air inlet as shown in Figure 5, though this pump is simple in structure, two strokes just can be finished an air inlet and inflate, and efficient is lower; Also the someone is by improving piston, and making can be through piston and break-in is given vent to anger, as shown in Figure 6, its complex structure, and because of unparalleled suction port, though can be two-way air-breathing, but air pressure height on one side, one side air pressure low, be unfavorable for the twitch of piston.

The purpose of this utility model just provides a kind of both sides isostasy, and simple in structure can bidirection air intake, the pump of unidirectional continuous air-out.

For achieving the above object, the technical solution adopted in the utility model is: mainly comprise a cylindrical shell, lid, piston, piston rod, pull head and air outlet.Cylindrical shell one end is a closed end, and there is an immovable point at closed end inner face center, and its end face offers some inlet holes, and the cylindrical shell the other end is an opening end, and opening end is provided with internal thread, and the lid periphery has outside thread, so that allow lid engage with the cartridge openings end; Be provided with a center hole in the lid, the lid inner face also is provided with an immovable point, and offers some inlet holes in end face; Two diaphragms are arranged, and wherein a diaphragm is slightly less than cylinder internal diameter, is fixed at the closed end inner face by the immovable point of cylindrical shell closed end, covers its inlet hole, and another diaphragm is slightly less than the internal diameter of lid, is fixed at the lid inner face by the immovable point of lid, covers the lid inlet hole; Piston rod is a hollow tube, and the one end inserts in the cylindrical shell through the lid center hole, and piston is connected to the inner of piston rod, place cylindrical shell, the piston periphery is provided with an annular groove, is provided with some through holes in this annular groove, be connected in through hole and the piston rod, have a drop-stopping ring to be placed on this piston ring groove simultaneously; The pull head is connected to the outer end of stretching out of piston rod, and the pull head is inner does not contact with the lid inlet hole, is a passage in the pull head, and there is an air outlet in the outside in this passage, and there is a check valve inboard in this passage, and communicates in the piston rod.

The diaphragm that the utility model utilization is located at cylindrical shell one end face is subjected to the suction that piston moves and opens, and makes the induction part that gas enters cylindrical shell by this end inlet hole; The diaphragm of cylindrical shell other end then is subjected to air pressure and closes, and the gas in the non-induction part of cylindrical shell enters in the piston rod via the space of piston drop-stopping ring and annular groove, gives vent to anger by check valve and air outlet.Therefore as long as the pull action is arranged, just the effect that can produce air inlet simultaneously and give vent to anger, thus efficient is inflated in raising, and also of the present utility model simple in structure, easier assembling and use.

Below in conjunction with the drawings and specific embodiments the utility model is further described.

Fig. 1 is a stereogram of the present utility model;

Fig. 2 is a three-dimensional exploded view of the present utility model;

Fig. 3 is the schematic representation that piston of the present utility model leaves lid;

Fig. 4 is the schematic representation that piston of the present utility model is shifted to lid;

Fig. 5 is the sectional drawing of first kind of prior art;

Fig. 6 is the sectional drawing of second kind of prior art;

As shown in Figure 1, 2, the utility model includes cylindrical shell 1, a lid 2, a piston rod 3, a piston 4, a pull head 5, an air outlet 51, a drop-stopping ring 52 and two

diaphragms

11,21 etc. that are hollow tube-shape.

Cylindrical shell 1 one ends are closed end 12, the other end is an opening end 13, the closed end inner face is provided with an immovable point 14, opening end is provided with internal thread 15, and lid 2 peripheries are provided with outside thread 25, and lid 2 is engaged with cylindrical shell 1, lid 2 inner faces also are provided with immovable point 24, offer some inlet holes 16 on the closed end 12, also offer some inlet holes 26 on the lid 2, there is a center hole 22 at the lid center; On the immovable point 24 of the immovable point 14 of closed end 12 and lid 2 inner faces, be fixed with a

diaphragm

11,21 respectively, make each diaphragm center be fixed on the inner face place at cylindrical shell two ends respectively, and each diaphragm all can cover corresponding inlet hole.

Piston 4 is connected on an end of the piston rod 3 that is hollow shape, and its periphery has an annular groove 41, has some through holes 42 to link to each other with hollow portion 33 in the piston rod 3 in the annular groove 41, is with a drop-stopping ring 44 on the annular groove 41.The end that piston rod connects piston stretches in the cylindrical shell 1 through the center hole 22 of lid 2, and piston 4 is placed in the cylindrical shell.

Pull head 5 is connected on the other end of piston rod 3, pull head center is a passage that runs through 55, piston rod 3 is fixed in the passage with a cover piece 31, be equipped with an air outlet 51 and that is positioned at the outside in the passage and be positioned at inboard check valve 52, check valve 52 is conducted with piston rod 3 hollow portions 33, and check valve is a tapered channel, there is a valve ball 53 centre, utilize moving of this valve ball 53, restriction gas only can be towards the air outlet 51 be gone out, and but can't import air thus.Pull head 5 has the cover portion 54 of extending to the other end, and to cover the part cylindrical shell, as handle, but gapped between cover portion and cylindrical shell, pull head the inner does not cover the inlet hole of lid, and gas walks to the lid air inlet position by the gap between cover portion and cylindrical shell.Be provided with internal screw thread in the air outlet 51, connect mutually with air punch with convenient, or join with the external screw thread of cranked tire valve, the stationarity that raising is inflated also can be connected with an extension tube.

Working principle of the present utility model is: when piston leaves lid, as shown in Figure 3, diaphragm in the lid is drawn back by suction, by inlet hole air inlet in cylindrical shell of lid, at this moment, second half part of cylindrical shell, it is the air of non-induction part, the influence that is stressed, tight the diaphragm of cylindrical shell closed end envelope, gas is by the space between drop-stopping ring and annular groove, via through holes, enter in the piston rod, since drop-stopping ring meeting secundly when piston moves, deflection lid shown in Figure 3, so, can prevent that the air that another side has just entered from pouring, the air that enters piston rod via piston to the piston rod hollow tube, to the check valve of pull head, give vent to anger by the air outlet then, so, Yi Bian give vent to anger, and the another side air inlet; When piston was shifted to lid, as shown in Figure 4, the diaphragm in the cylindrical shell closed end was drawn back by suction, and air enters from the inlet hole of lid, and the gas of the aforementioned suction of second half part is given vent to anger through piston, piston rod, pull head, so circulation, air inlet simultaneously with give vent to anger.

Claims

1. two-way air intake inflator, mainly comprise a cylindrical shell, lid, piston, piston rod, pull head and air outlet, cylindrical shell one end is a closed end, the cylindrical shell the other end is an opening end, opening end is provided with internal thread, the lid periphery has outside thread, so that allow lid engage with the cartridge openings end, be provided with a center hole in the lid, piston rod one end inserts in the cylindrical shell through the lid center hole, and piston is connected to the inner of piston rod, place cylindrical shell, the pull head is connected to the outer end of stretching out of piston rod, it is characterized in that: there is an immovable point (14) at cylindrical shell closed end (12) inner face center, and its end face offers some inlet holes (16); Lid (2) inner face also is provided with an immovable point (24), and offers some inlet holes (26) in end face, and pull head (5) the inner does not contact with this inlet hole; Also have two diaphragms, wherein a diaphragm (11) is slightly less than cylindrical shell (1) internal diameter, fixed at closed end (12) inner face by the immovable point of cylindrical shell closed end (12) (14), cover its inlet hole (16), another diaphragm (21) is slightly less than the internal diameter of lid (2), fixed at the lid inner face by the immovable point of lid (24), cover lid inlet hole (26); Piston rod (3) is a hollow tube, and piston (4) periphery is provided with an annular groove (41), is provided with some through holes (42) in this annular groove, is connected in through hole and the piston rod (3), has a drop-stopping ring (44) to be placed on this piston ring groove simultaneously; Be a passage (55) in the pull head (5), there is an air outlet (51) in the outside in this passage, and there is a check valve (52) inboard in this passage, and communicates in the piston rod (3).

2. two-way air intake inflator according to claim 1 is characterized in that: be extended with a cover portion (54) at pull head (5) towards cylindrical shell (1) direction, and gapped between this cover portion and the cylindrical shell.