CN2031458U - Piston inflater - Google Patents

Abstract

The utility model discloses a piston inflator which a device for inflating to inner tires of wheels, life buoys or other air bags. The technique is characterized in that a piston and a seal ring replace the outlet seam adopted by the traditional inflator. The utility model has the advantages of long service life and light weight, reduces the oil amount of air pressed by the inflator; on the other hand, the main tube is made of plastic, which prevents the main tube from corroding.

Description

Piston inflater

It is the pump of the inner tube of a tyre inflation of wheel that the utility model relates to a kind of.

The manual inflator of inflating for inner tube that uses at present all is to have adopted traditional structure, promptly has an end of the person in charge, base, upper end cap, piston rod, piston rod that handle, a other end are housed a burr formation is housed.When inflating, use the hand push handle, handle promotes burr by piston rod and moves downward, and the air pressure in being responsible for is increased, and gives the inner tube of a tyre inflation of wheel.Though this pump is in use more convenient, the burr made from ox-hide that this pump adopts is bigger with the frictional force of being responsible between the inwall, and burr is ground away easily.On the other hand, this pump in use should add some lubricant oil, and is lubricated to burr.Because the burr oil suction is more, easily lubricant oil is dipped on the base of pump in time spent not, make that in use the gas oil content that extrudes is higher, after these oil charge into inner tube, will quicken the aging of inner tube, reduce the working life of inner tube.Moreover the burr manufacturing that this pump uses is difficulty, and cost is also higher, changes also inconvenient.

The purpose of this utility model is: provide a kind of wear-resisting by seal arrangement, and the piston type pump that increases the service life.

The utility model is achieved in that it comprises the person in charge (6), at an end of being responsible for (6) base (1) is housed, and the same upper end cap of the other end (8) is connected, and an air outlet adapter (2) is housed on the base (1).There is a piston rod (7) to insert in the person in charge (6) by the center hole of upper end cap (8), the outer end of piston rod (7) is leader (9) fixedly, the other end is adorned one and is had the piston (5) that causes a few inlet hole (3), the side of piston (5) is processed with seal groove, and seal ring (4) is housed in the seal groove.When using, piston rod (7) drives piston (5) and moves up, seal ring (4) just comes to the downside that piston (5) is gone up seal groove, gas just flows in the following person in charge (6) of piston (5) by gap between the piston (5) and the person in charge (6) and inlet hole (3), when piston (5) moves under the person in charge's (6) the effect of top back piston bar (7) in power push piston (5), seal ring (4) just comes to the upside of seal groove, with the clearance seal between the piston (5) and the person in charge (6), gas pressure in the following person in charge (6) of piston (5) is raise, and the air vent that the gas that the person in charge (6) below the piston (5) is interior passes through on the base (1) flows out from air outlet adapter (2).And then charge in the inner tube through the connection set of air outlet adapter between chewing with the inner tube gas body of will calming the anger.Repeat said process and can give the inner tube continuous charge, so that reach till the requirement.

This piston type pump, its piston is a seal ring with the sealing employing between person in charge's inwall, its seal ring and frictional ratio burr and the friction between person in charge's inwall be responsible between the inwall are little.So just can alleviate the wearing and tearing of seal ring, the working life of improving pump.Use seal ring and use burr to compare, the low price of seal ring, it is also easier to change seal ring.In addition, use the used lubricant oil of seal ring less, the gas oil content that pump is extruded is lower, so also can prolong the working life of inner tube.

Fig. 1 is a structural drawing of the present utility model.

Among the figure: the 1st, base; The 2nd, air outlet adapter; The 3rd, inlet hole; The 4th, seal ring; The 5th, piston; The 6th, be responsible for; The 7th, piston rod; The 8th, upper end cap; The 9th, handle.

Be described in detail below in conjunction with accompanying drawing:

Seal ring of the present utility model (4) can select for use O RunddichtringO, trapezoidal type seal also can select y-type seal ring or U RunddichtringO for use.Select Y type or U RunddichtringO for use, at piston (5) when moving upward, not only air inlet among the person in charge of inlet hole (3) below piston (5), and Y type or U RunddichtringO be with air inlet in the outer tongue place that is responsible for the contact of (4) inwall also person in charge (6) to piston (5) below, the resistance of air in the time of so just can reducing piston (5) rising.But it is adopt O type or ladder type seal ring low price, and wear-resisting.

The person in charge of the present utility model (6) can adopt the metal manufacturing, as steel pipe etc.Also can adopt the plastics manufacturing, as hard polvinyl choride pipe, polyfluortetraethylene pipe etc., the person in charge (6) who makes with plastics can be to be threaded with being connected of base (1), upper end cap (8).Also can take other Placements, its advantage of the person in charge (6) made from plastics is in light weight, is responsible for inner wall smooth, and seal ring is not easy to wear.No matter being responsible for (6) is by the steel pipe manufacturing, still use the plastic tube manufacturing, the connection of being responsible between (6) same base (1) will guarantee good sealing, in order to avoid gas leakage in use.

Piston of the present utility model (5) is connected with piston rod (7), can adopt nut to be fixedly clamped, and also can adopt other modes to connect, as long as guarantee that piston (5) is fixed on piston rod (7) and goes up.

Piston type pump of the present utility model both can be used for the inflation of inner tube, also can be used for the inflation of air bags such as life ring, and was easy to use.

Claims (3)

1, piston type pump, comprise base [1], the handle [9] that air outlet adapter [2], the person in charge [6], upper end cap [8], piston rod [7] are fixedlyed connected with same piston rod [7], it is characterized in that: piston rod [7] the insertion person in charge's [6] a end is fixed one and is had the piston [5] that causes a few inlet hole [3], the side of piston [5] is processed with seal groove, and seal ring [4] is housed in the seal groove.

2, piston type pump according to claim 1 is characterized in that: said seal ring (4) is O RunddichtringO, trapezoidal seal ring, y-type seal ring or U RunddichtringO.

3, piston type pump according to claim 1 is characterized in that: the said person in charge (6) is to be made of plastics.

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