WO2001010247A1

WO2001010247A1 - An inflation tube being able to stretch out and draw back

Info

Publication number: WO2001010247A1
Application number: PCT/CN1999/000193
Authority: WO
Inventors: Disheng Zhu; Xuewei Chen; Dihua Zhu
Original assignee: Boluo Yaofeng Electronics Co. Ltd.
Priority date: 1999-08-04
Filing date: 1999-11-17
Publication date: 2001-02-15
Also published as: DE19956508A1; DE19956508C2

Abstract

A inflation tube includes an inflation bar with its front end closed by a circular disc and its rear end formed into an inwardly extending edge; a gas-spraying head; a movable tube disposed inside the inflation bar and covered with a spring; a small piston connected with the movable tube at the front end of the latter and provided with a central hole. The rear end of the moveable tube extends out of the inflation bar and is connected with the gas-spraying head. The movable tube can stretch out under the pressure of the gas when inflated and draws back due the action of the spring when uninflated.

Description

TECHNICAL FIELD

The utility model relates to an inflatable tube which can be used for a domestic soda machine or other devices, and particularly to a variable-length inflatable tube.

Background technique

At present, the domestic soda water machine inflation pipes in domestic and foreign markets are fixed, as shown in Figure 1, mainly composed of the nozzle A and the air-jet head B, the two are fixed connection, that is, the length of the nozzle A is fixed; When the soda water machine is inflated, it is required that the inflation pipe extends into the soda bottle water to a certain depth, so the inflation pipe must be kept long. In order to save costs, it is also hoped that the entire height of the soda water machine is not too high, so what is currently seen on the market The soda machine has a fixed length of inflation tube, so the soda bottle must be tilted at a large angle, otherwise the soda bottle will touch the inflation tube, which is not only inconvenient to operate, but also the water in the soda bottle is in the bottle. It is also easy to flow out during the process. In order to solve the above-mentioned problems existing in the domestic soda water machine, the present utility model makes a breakthrough improvement to the existing fixed-type inflatable tube.

Summary of invention

The main purpose of the utility model is to provide a retractable inflatable tube, which is convenient to operate and has better practicability when inflated in a soda machine.

To this end, the utility model improves a fixed inflatable tube of a domestic soda machine into a variable-length component device. Its main components include an inflatable pestle, a small piston, a spring, a movable tube, and an air-jet head. The outermost part is an inflatable rod as a casing. The inflatable rod is fixed in the soda machine, it is inactive, and the movable part is a movable tube located in the center of the assembly. The lower end of the movable tube is connected to the air-jet head, and the upper end is connected to the small piston. There is a spring between the movable tube and the inflatable rod. When not inflated, the movable tube is fully retracted into the inflatable rod under the action of the spring; and when inflated, the movable tube under the action of air pressure overcomes the elastic force of the spring to make the movable tube completely extend, and the gas is ejected from the end Small holes squirted.

The specific technical solution of the utility model is as follows: A retractable inflatable tube includes an inflatable rod and an air-jet head. The center of the inflatable rod is a through hole, and the center of the air-jet head has a small hole. The characteristics are: a small piston, A spring and a movable tube; wherein, the tail end of the inflatable tube forms an edge extending toward the center of the hole, so that the end of the inflatable rod has exactly one hole for the movable tube to extend, and the head end is provided with a plurality of small holes. The disc is closed; the outer diameter of the small piston is designed to correspond to the inner diameter of the central hole of the inflatable rod, so that it can slide along the wall surface of the through hole of the inflatable rod, and the small piston is centered Through hole; the outer diameter of the movable tube is smaller than the inner diameter of the inflatable rod, so that a space for accommodating a spring is left between the movable tube and the inflatable rod inserted in the inflatable rod; the movable tube is provided with a central through hole; In the central through hole of the inflatable rod, one end of the spring abuts the small piston, and the other end abuts the edge of the inflatable rod; the head of the movable tube is screwed with the small piston, the central through hole of the two corresponds, and the tail end protrudes outside the inflatable rod and is provided. Threaded, the air jet head is directly connected to the movable pipe by screwing.

The technical solution of the present utility model further includes: an inner edge of an inward end of the inflatable rod may further be provided with a damping pad made of a spring material.

The movable tube and the small piston may be two separate parts separated, and the two are connected by screwing, or they may be integrated.

In addition, an annular groove is provided at the head of the inflatable rod, and a sealing ring is placed in the groove.

The small piston is provided with an annular groove, and a sealing ring is placed in the groove.

The end surface of the head end of the combination of the inflatable rod and the soda machine is provided with a recess, and a filter is glued in the recess.

The inflatable tube consists of a metal hollow round tube insert placed in the center of the plastic.

After adopting this structure, when not inflated, the movable tube is fully retracted into the inflatable rod under the action of spring tension, which is convenient for insertion into the soda bottle, and when co ₂ charging is started, the movable tube overcomes the spring under the pressure of co ₂ Zhang struts extending elastic force, corresponding to the elongated inflatable tubes may extend into the deeper parts of the bottle; charge (: ₀₂ is completed to stop gas supply, the active tube spring force to automatically retract fully inflated Inside the pestle, the inflatable tube is shortened again, so that the soda bottle can be easily removed without having to tilt at a large angle, and there is no need to worry about the water in the bottle overflowing.

The present invention will be further described in detail with reference to the accompanying drawings and embodiments.

FIG. 1 is a schematic structural diagram of a conventional inflatable tube.

FIG. 2 is a schematic structural diagram of the present invention.

Detailed Preferred Embodiment

As shown in FIG. 2, the retractable inflatable tube of the present utility model is mainly composed of an inflatable rod 1, a small piston 2, a spring 3, a movable tube 4, and an air-jet head 5. The center of the inflatable rod 1 is a through hole 1 1 The through hole 11 is not tapered (or has a very small taper). The inflatable rod 1 can be a metal tube or a non-metal tube. If it is injection molded with plastic, it can be a full plastic part, or it can be centered during injection. It is made by arranging a metal hollow tube insert. The end of the through hole 11 of the inflatable rod 1 forms an edge 111 toward the center of the hole, leaving the tail of the inflatable pestle just A hole for the movable tube 4 to protrude, and the edge 1 1 1 of the inflatable rod 1 may be provided with a damping pad 1 12 (optionally) made of elastic material. When the bottom of the movable tube meets the vibration damping pad 112, it can be decelerated and damped.

The head of the inflatable tube is closed with a disc. The disc has a plurality of holes, the central hole of which is used for the CO ₂ gas to pass through the top pressure piston 2, and the peripheral holes are provided for the screws to pass through to fix the inflatable rod 1 to the soda machine.

The outer diameter of the small piston 2 is designed to correspond to the inner diameter of the central hole 1 1 of the inflatable rod 1 so that it can slide freely along the wall surface of the through hole 1 1 so that it is connected with the movable tube 4 and the inner hole of the inflatable pestle 1 to form a piston. Structure, and the small piston is provided with a central hole 21 corresponding to the inner hole 41 of the movable tube 4, the movable tube 4 is covered with a spring 3, and is placed together in the central through hole 1 1 of the inflatable rod 1, and the spring 3—the end thereof abuts against the small piston 2. The other end is against the edge 11 1 of the inflatable rod, and the head end of the movable tube 4 engages the small piston 2. The tail end protrudes from the inflatable rod 1 and is provided with a thread. The air jet head 5 is directly connected to the movable tube 4 by screwing. There is a small hole in the center of the head 5. The high-pressure gas passes through the inner hole 41 of the movable pipe 4 through this small hole and enters the soda bottle. There are two ways of combining the movable tube 4 and the small piston 2, one is the two independent parts separated by the movable tube 4 and the small piston 2, and the two are connected by screwing, and the other is the movable tube 4 and the small piston. 2 is an integrated structure.

In order to isolate the CO ₂ gas in the inflatable rod 1 from the low-pressure area outside the inflatable rod, a ring-shaped groove 12 may be provided at the head end of the inflatable rod 1, and a sealing ring 122 is placed in the groove 12. One end of the small piston 2 is also provided with an annular groove, and a sealing ring 22 is also placed in the groove.

An indentation is provided on the head end surface of the end where the inflatable pestle 1 is combined with the soda machine. A filter screen 6 is glued in the indentation, which can filter impurities and purify CO ₂ gas.

When in use, first install the soda bottle with water on the soda machine. Because C0 _{2 is} not charged at this time, the small piston 2 is held on the inflation rod 1 away from the air jet head 5 under the elastic force of the spring 3. The head end, so that the movable tube 4 is retracted into the inflatable rod 1, and the entire length of the inflatable tube is the length (shorter) of the inflatable rod 1, which can be conveniently packed into a soda bottle. Subsequently, C0 _{2 is} charged. Under the action of gas, the movable tube 4 overcomes the elastic force of the spring 3 and completely extends from the inflation rod 1 into the water of the soda bottle. At this time, the length of the entire inflation tube is almost doubled. C0 ₂ the pneumatic rod 1 through the through hole 11, the through hole 41 of the movable pipe 4, and then through the central hole 5 showerhead high-speed jet into the water, the inflator is completed, there is no pressure _(02, the movable pipe 4 by a spring support 3 will It is retracted into the inflatable rod 1 by the action of the tension force. Because the inflation tube is shortened, the soda bottle filled with CO ₂ can be easily removed at this time. There is no existing fixed-length inflation tube when the bottle is removed after the inflation is completed. Easy to make as the soda tube must be tilted because the tube is too long Into the problem of water spillage inside.

The above are only the preferred embodiments of the present invention. Those skilled in the art can make various equivalent substitutions without departing from the scope of the technical solution of the present invention, but these should be included in Within the technical scheme of the utility model.

Claims

Rights request

What is claimed is: 1. A retractable inflatable tube, comprising an inflatable rod and an air-jet head. The center of the air-injection rod is a through-hole, and the center of the air-jet head has a small hole, characterized in that it is additionally provided with a small piston, a spring, and a movable tube; The tail end of the inflatable tube forms an edge extending toward the center of the hole, so that the end of the inflatable rod has exactly one hole for the movable tube to protrude, and the head end is closed by a disc provided with multiple holes; the outer diameter of the small piston Designed to correspond to the inner diameter of the central through hole of the inflatable rod, so that it can slide along the wall surface of the through hole of the inflatable rod, and the small piston central through hole; the outer diameter of the movable tube is smaller than the inner diameter of the inflatable rod, so that There is a space for accommodating the spring. The movable tube is provided with a central through hole. The movable tube is surrounded by a spring and is placed in the central through hole of the inflatable pestle. One end of the spring is against the small piston, and the other end is against the edge of the inflatable rod. The head of the movable pipe is screwed with a small piston, the center through holes of the two correspond to each other, the tail end protrudes from the inflatable rod and is provided with a thread, and the air jet head is directly connected to the movable pipe by screwing.

2. The retractable inflatable tube according to claim 1, characterized in that: the inner edge of the trailing edge of the inflatable rod is provided with a damping pad made of an elastic material.

3. The retractable inflatable tube according to claim 1, characterized in that: the movable tube and the small piston are two separate components separated from each other, and the two are joined by screwing.

4. The retractable inflatable tube according to claim 1, wherein the movable tube and the small piston are integrated.

5. The retractable inflatable tube according to claim 1, further comprising: an annular groove is provided at the head end of the inflatable rod, and a sealing ring is placed in the groove.

6. The retractable inflatable tube according to claim 1, wherein the small piston is provided with an annular groove, and a sealing ring is placed in the groove.

7. The retractable inflatable tube according to claim 1, characterized in that: the end face of the inflatable rod is provided with a recess, and a filter is glued in the recess.

8. The retractable inflatable tube according to claim 1, wherein the inflatable tube is formed by placing a metal hollow circular tube insert in the center of the plastic.