CN2348136Y - Means for connecting pressure chamber and air-storage chamber of air-storage inflator - Google Patents

Abstract

The utility model relates to a device for connecting a pressure chamber and an air-storage chamber of an air-storage inflator, comprising a lower end cover 2 of the pressure chamber, a valve core 7, a spring 9, an adjusting bolt 10, an upper end cover 4 of the air-storage chamber, and a sealing ring 3. The valve core 7 is a cylindrical oil-resistant rubber block. The upper end of the valve core is in a tapered shape, and a part of the top part extends into a small hole 6 at the bottom of a through hole 8 at the center of the lower end cover of the pressure chamber. The utility model can prevent the abuse that the sealing performance of the valve core of a steel ball is easy to be poor, and the conical upper end of the valve core also has a self-positioning function.

Description

The connection set of air-stored pump pressurized chamber and air-storage chamber

The utility model relates to a kind of structure of parts of manual air-stored pump, i.e. the structure of the connection set of pressurized chamber and air-storage chamber.

Manually there is an one-way valve pressurized chamber and the joint between the air-storage chamber of air-stored pump, and the air that enters in the air-storage chamber can not be flow backwards, to keep the pressure in the air-storage chamber.Chinese patent 94224681.0 has been introduced a kind of single tube high-pressure pump, its pressurized chamber relies on its lower end cap to be connected with the upper end cap of air-storage chamber, there is a stepped through hole at lower end cap center, pressurized chamber, does spool with steel ball, by spring with regulate bolt with the bottom of steel ball roof pressure at through hole.This structure needs to be stained with a slice soft rubber in stepped via bottoms, to guarantee the steel ball reliable sealing.Piston running hours in the pressurized chamber can produce high temperature, makes the glue fusion, thereby causes the soft rubber sheet to come off, and can adhere to glue, impurity on the steel ball, has a strong impact on the sealability of one-way valve.

The purpose of this utility model is the structure that proposes the connection set of a kind of air-stored pump pressurized chamber and air-storage chamber, and the sealing of its one-way valve is more reliable.

The connection set of this air-stored pump pressurized chamber and air-storage chamber comprises pressurized chamber's lower end cap, spool, spring, adjusting bolt, air-storage chamber upper end cap and seal washer.There is the single order trapezoidal hole at lower end cap center, pressurized chamber, the lower diameter in hole is bigger, the bottom is less hole, spool, spring and adjusting bolt are installed in the through hole successively, spool is crushed on the aperture of bottom of through hole, the lower end cap of pressurized chamber relies on screw thread to be connected mutually with the air-storage chamber upper end cap, the seal washer pad is between pressurized chamber's lower end cap and air-storage chamber upper end cap, described spool is a columniform oil resistant rubber piece, its upper end coning, the top has part to stretch in the aperture of pressurized chamber lower end cap central through bore bottom.

This connection set owing to adopt the spool of oil resistant rubber piece, does not need to paste the soft rubber sheet in via bottoms, there are not disadvantages such as rubber tissue comes off, and oil resistant rubber piece spool has certain elasticity, and sealing is reliable, and the conical upper end of spool can also play self-align effect.

Accompanying drawing 1 is the structural drawing of the connection set of this air-stored pump pressurized chamber and air-storage chamber;

Accompanying drawing 2 is the structural drawing of spool;

Accompanying drawing 3 is the structural drawing of pressurized chamber's lower end cap;

Accompanying drawing 4 is the structural drawing of air-storage chamber upper end cap.

As shown in Figure 1, the connection set of this air-stored pump pressurized chamber and air-storage chamber comprises pressurized chamber's lower end cap 2, spool 7, spring 9, regulates bolt 10, air-storage chamber upper end cap 4 and seal washer 3.There is single order trapezoidal hole 8 at the center of pressurized chamber's lower end cap 2, and the lower diameter in this hole is bigger, and a less hole 6 is arranged at the bottom, and spool 7, spring 9 and adjusting bolt 10 are contained in the through hole successively, and spool 7 is crushed on the aperture 6 of via bottoms.Cushion sealing gasket 3 between pressurized chamber's lower end cap and the air-storage chamber upper end cap.As illustrated in fig. 1 and 2, spool 7 is cylindrical oil resistant rubber piece, its upper end coning, the top have the part stretches in the aperture 6 of lower end cap central through bore 8 bottoms, pressurized chamber.As shown in Figure 1, during use, pressurized chamber's lower end cap 2 is tightly connected mutually with the cylindrical shell 1 of pressurized chamber, and air-storage chamber upper end cap 4 is tightly connected mutually with the shell 5 of air-storage chamber.This connection set can be used in down on the air-stored pump of storage type, also can be used on the air-stored pump of side storage type.

In the connection set of this as shown in Figure 4 air-stored pump pressurized chamber and air-storage chamber, the one annular lower dent 11 that can hold seal washer 3 can also be arranged on the upper-end surface of air-storage chamber upper end cap, as shown in Figure 3, one annular protrusion 12 that can embed in the annular lower dent 11 of air-storage chamber upper end cap is arranged on the lower end surface of pressurized chamber's lower end cap, as shown in Figure 1, such structure, seal washer 3 is crushed in the annular lower dent of air-storage chamber upper end cap, can prevent seal washer by pressurized gas extrude, phenomenon such as fracture takes place, sealability is just better.

Claims (2)

1, the connection set of a kind of air-stored pump pressurized chamber and air-storage chamber, comprise pressurized chamber's lower end cap (2), spool (7), spring (9), regulate bolt (10), air-storage chamber upper end cap (4) and seal washer (3), there is single order trapezoidal hole (8) at lower end cap center, pressurized chamber, the lower diameter of through hole is bigger, the bottom is less hole (6), the through hole the inside is installed with spool (7) successively, spring (9) and adjusting bolt (10), spool is crushed on the aperture (6) of via bottoms, the lower end cap of pressurized chamber (2) relies on screw thread to be connected mutually with air-storage chamber upper end cap (4), seal washer (3) pad is between pressurized chamber's lower end cap and air-storage chamber upper end cap, it is characterized in that described spool (7) is columniform oil resistant rubber piece, its upper end coning, the top has part to stretch in the aperture (6) of pressurized chamber's lower end cap central through bore (8) bottom.

2, air-stored pump pressurized chamber as claimed in claim 1 and air-storage chamber connection set, it is characterized in that having on the upper-end surface of described air-storage chamber upper end cap (4) an annular lower dent (11) that can hold seal washer (3), an annular protrusion (12) that can embed in the annular lower dent (11) of air-storage chamber upper end cap is arranged on the lower end surface of described pressurized chamber lower end cap (2).

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