CN2856474Y

CN2856474Y - Internal storage inflator

Info

Publication number: CN2856474Y
Application number: CN 200520115990
Authority: CN
Inventors: 陈双广
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-11-02
Filing date: 2005-11-02
Publication date: 2007-01-10
Anticipated expiration: 2015-11-02

Abstract

The utility model discloses an inner storage type inflator which comprises a handle 1, a outer tube body 3, a inner tube body 9, a piston 7, a bottom seat 12, and a foot ring 13. The handle 1 is fixed on the outer tube body 3, the inner tube body 9 is fixed on the bottom seat 12, the piston 7 is disposed in the outer tube with is installed on the inner tube body 9 by muff coupling; the inner tube body is fixed on the piston by inner screw; a sealing washer 5 is disposed between the end face of the inner tube body 9 and the contact surface of the piston 7; a sealing ring 8 is disposed on the inner tube body wall in impact fit with the piston 7 which has two sealing rings 6 disposed on the exicrcle matching with the outer tube body 3 and a one way valve 4 disposed inside; one end of the one way valve 4 is connected to the chamber of the outer tube body 3, the other end is connected with the chamber of the inner tube body. By applying the above mentioned structure, the utility model achieves the advantages of simple reasonable structure, good sealing performance, convenient reparation, labour saving, high gas production and long service life.

Description

The inner-containing type inflator

Technical field

The utility model relates to a kind of hand pump, particularly a kind of improvement of inner-containing type gas cylinder.

Background technique

At present, the inflator of inner-containing type structure is when inflating, because gas production is big, efficient is high, feel is light, and enjoys liking of consumers in general; But also exist many deficiencys: the one, be connected between interior tube body and the piston and rely on the glue fixing seal, be an exothermic process because of gas compression on the one hand, along with the rising of each bond temperature, degumming phenomenon happens occasionally, thereby causes inflator to damage; On the other hand, non-dismountable behind the employing glue sealing, cause one-way valve to be installed from outside to inside, increase seal point one, both increased the probability of gas leakage, also increase processing cost and installation difficulty simultaneously, inflator can't be repaired after damaging, and can only scrap; The 2nd, outer tube body directly relies on the handle sealing, and outer tube body is the gas compression end near handle end, the gas compression liberated heat makes this position, and temperature improves constantly along with continuous use, the distortion of handle expanded by heating, intensity significantly descend, cause that the crack appears in handle, the gas leakage of coming unstuck, when serious, even cause handle to fracture; The 3rd, outer tube body and interior tube body generally adopt Al-alloy pipe, and be soft because of its quality, in use occurs the bending and the distortion of damaging easily, can only use screw thread and glue fixing seal with base is fixing, therefore the problem that leaks air equally easily.

Summary of the invention

For overcoming the above-mentioned disadvantage that existing inner-containing type inflator exists, problem to be solved in the utility model provide a kind of simple and reasonable, feel is light, gas production is big, good seal performance, repairing make things convenient for, the inner-containing type inflator of long service life.The technological scheme that its technical problem that solves the utility model adopts, it comprises handle, outer tube body, interior tube body, piston, base and pin ring, handle is fixed on the outer tube body, interior tube body is fixed on the base, piston is arranged in the outer tube body, outer tube body is socketed on the interior tube body, the bottom of outer tube body is provided with bottom, the gas tube assembly is fixed on the air outlet of base, described interior tube body is fixed on the piston by internal thread, between the surface of contact of the end face of interior tube body and piston, be provided with seal washer, be provided with the seal ring with tight with piston on the interior tube body tube wall, the cylindrical of piston is provided with the seal ring of twice and outer tube body coupling, is provided with one-way valve in the piston, one end of one-way valve links to each other with the chamber of outer tube body, and the other end communicates with the chamber of interior tube body.

In order to prevent that handle expanded by heating distortion, intensity from significantly descending, cause that the crack appears in handle, the gas leakage of coming unstuck, the roof anchorage of described outer tube body has end cap.

In order to improve the mechanical strength of inside and outside body, prevent the phenomenon of easy gas leakage, described outer tube body and interior tube body are made by the metallic iron pipe, and base is made by steel part, and interior tube body is fixed by welding in base.

After adopting said structure, have simple and reasonable, good seal performance, easy to maintenance, advantages such as feel is light, gas production is big, long service life.

Description of drawings

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

Embodiment

Shown in Figure 1, specific embodiments for a kind of inner-containing type inflator of the utility model, it comprises handle 1, outer tube body 3, interior tube body 9, piston 7, base 12 and pin ring 13, the roof anchorage of outer tube body 3 has end cap 2, can prevent the distortion of handle 1 expanded by heating, intensity significantly descends, cause handle 1 crack to occur, the gas leakage of coming unstuck, handle 1 is fixed on outer tube body 3 tops, interior tube body 9 is fixed on the base 12, piston 7 is arranged in the outer tube body 3, outer tube body 3 is socketed on the interior tube body 9, the bottom of outer tube body 3 is provided with bottom 10, the gas tube assembly is fixed on the air outlet 11 of base 12, described interior tube body 9 is fixed on the piston 7 by internal thread, between the surface of contact of the end face of interior tube body 9 and piston 7, be provided with seal washer 5, on interior tube body 9 tube walls, be provided with seal ring 8 with piston 7 close-fittings, make double seal between interior tube body 9 and the piston 7, pressurized gas is sealed firmly, the cylindrical of piston 7 is provided with the seal ring 6 of twice and outer tube body 3 couplings, be provided with one-way valve 4 in the piston 7, one end of one-way valve 4 links to each other with the chamber of outer tube body 3, and the other end communicates with the chamber of interior tube body 9.

In order to improve the mechanical strength of inside and

outside body

9,3, the phenomenon of prevent easy bending, the mistake of damaging is round and sealing is poor, easily leaking gas, described outer tube body 3 and interior tube body 9 are made by the metallic iron pipe, and base 12 is made by steel part, and interior tube body 9 is fixed by welding in base 12.

Claims

1, a kind of inner-containing type inflator, comprise handle (1), outer tube body (3), interior tube body (9), piston (7), base (12) and pin ring (13), handle (1) is fixed on the outer tube body (3), interior tube body (9) is fixed on the base (12), piston (7) is arranged in the outer tube body (3), outer tube body (3) is socketed on the interior tube body (9), the bottom of outer tube body (3) is provided with bottom (10), the gas tube assembly is fixed on the air outlet (11) of base (12), it is characterized in that: described interior tube body (9) is fixed on the piston (7) by internal thread, between the surface of contact of the end face of interior tube body (9) and piston (7), be provided with seal washer (5), on interior tube body (9) tube wall, be provided with seal ring (8) with piston (7) close-fitting, the cylindrical of piston (7) is provided with the seal ring (6) of twice and outer tube body (3) coupling, be provided with one-way valve (4) in the piston (7), one end of one-way valve (4) links to each other with the chamber of outer tube body (3), and the other end communicates with the chamber of interior tube body (9).

2, inner-containing type inflator according to claim 1 is characterized in that: the roof anchorage of described outer tube body (3) has end cap (2).

3, the two-tube gas cylinder of guiding according to claim 1 and 2 is characterized in that: described outer tube body (3) and interior tube body (9) are made by the metallic iron pipe, and base (12) is made by steel part, and interior tube body (9) is fixed by welding in base (12).