JPH0138997B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a hose connection device for a vacuum cleaner or the like used in a general household.

1 and 2 show a conventional hose connection device, in which the hose 21 is directly attached to the connection pipe 22, and the back side of the hose cover 23 and hose holder 24 is connected to the hose 21. It has a structure in which the provided ribs 25 press down the folds 26 of the hose 21 and fix it. As a result, the following problems arose.

When assembling the hose, insert the hose cover 23 and the hose holder 24 into the predetermined positions of the connecting pipe 22, and when they fit together, the rib 25 provided on the back side will be located at the position of the fold trough 26 of the hose 21. It is necessary to align the position so that it is aligned, and the alignment becomes an important control point, and the workability is also poor. Furthermore, the hose connection part lacks airtightness.

The hose is fixed directly to the connecting pipe,
Rotational twisting phenomenon occurs in the hose when using a vacuum cleaner, etc. As a result, torsional stress is applied to the hose, making it difficult to use.

Since the hose and the connecting pipe are fixed, the bending point of the hose is always at the same point during use, and fatigue tends to concentrate at that point.
This is the reason why their lifespans are shortened.

Purpose of the Invention The present invention solves the above-mentioned conventional drawbacks, and aims to provide a hose connection device that improves airtightness at joints and facilitates hose assembly work. .

Structure of the Invention The present invention provides a fixing ring that rotatably covers the outer circumferential surface of the hose at the rear of a connecting pipe to which the outer circumference of one end of the hose is fixed with adhesive, and the connecting pipe and the fixing ring The connecting pipe is inserted rotatably into the inner circumference of the connecting pipe first, and the connecting pipe and the fixing ring are prevented from turning and coming off by engaging the uneven parts formed on their opposing parts. A ring-shaped lip and a protrusion are formed to airtightly join between the tip of the pipe and the inner surface of the connecting pipe. Therefore, the hose can be rotated arbitrarily relative to the connecting pipe, eliminating twisting of the hose.Furthermore, after gluing one end of the hose to the connecting pipe, simply insert this connecting pipe fixing ring into the connecting pipe. It can be assembled with. Moreover, even though the connecting pipe rotates, airtightness is reliably maintained due to the action of the lip.

DESCRIPTION OF EMBODIMENTS The embodiments will be described below with reference to the accompanying drawings.
First, Fig. 3 shows a connection pipe 5 that is used in a vacuum cleaner, with one end of the connection pipe 3 inserted into the suction side of the main body 1 of the vacuum cleaner, and a bent connection pipe 5 for connecting an extension pipe 4. are connected to the other ends of the hoses, and 6 indicates a floor nozzle connected to the tip of the extension pipe 4. The connection structure of the hose 2 to the connecting pipe 3 and the curved connecting pipe 5 is the same, and the following explanation will be given only for one side of the connecting pipe 3. In FIGS. 4 to 7, the hose 2 is securely fixed to the inner surface of the connecting pipe 7 with an adhesive. And this joint pipe 7
A thin ring-shaped lip 8 is provided at the tip of the connecting pipe 3, and when it is inserted into the connecting pipe 3, it comes into close contact with the inner surface protrusion 9 of the connecting pipe 3, making the connection pipe 3 and the connecting pipe 7 airtight. I try to maintain my sexuality. Further, the connection pipe 3 and the joint pipe 7 that join the hose 2 are configured to maintain a rotatable fitting relationship.

A fixing ring 10 rotatably attached to the outer peripheral surface of the hose 2 is provided at the rear of the connecting pipe 7. This fixing ring 10 is C-shaped with a notch 11, is made of an elastic resin molded product, and is designed to be easily attached to and detached from the outer peripheral surface of the hose. It also has two or more elastic protrusions 12.

As described above, with the connecting pipe 7 glued to one end of the hose 2 and the fixing ring 10 attached to the rear thereof, the connecting pipe 3 is inserted into the inner surface of the connecting pipe 3, and inserted into the notch 13 provided in the connecting pipe 3. Fixed ring 10
The hose 2 is joined to the connecting pipe 3 by fitting the projections 12 of the hose 2 to the connecting pipe 3. Here, the hose 2 is rotatable relative to the connecting pipe 3 via the connecting pipe 7, and the fixing ring 10 prevents the connecting pipe 7 from coming off from the connecting pipe 3.

Effects of the Invention As is clear from the above embodiments, the present invention has a structure in which the joint between the hose and the connecting pipe is rotatable, so even if the hose becomes twisted during use of a vacuum cleaner, it can be easily removed. This makes it possible to return the hose to its original state, thereby improving usability and extending the life of the hose. Also, when assembling the hose, the outer circumference of one end of the hose,
Alternatively, apply adhesive to the inner surface of the connecting pipe to adhesively fix the two, attach a C-shaped elastic fixing ring to the rear of the connecting pipe, and then insert it into the inner surface of the connecting pipe to protrude the fixing ring. Since the process is completed simply by fitting the hose into the notch provided in the connecting pipe, it produces many excellent effects such as extremely easy attachment and detachment of the hose.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a conventional hose connection section, Fig. 2 is an exploded perspective view of the same, Fig. 3 is a side view of a vacuum cleaner implementing a hose connection device according to an embodiment of the present invention, and Fig. 4 is a hose connection section. 5 is a sectional view of the joint pipe, FIG. 6 is a sectional view of the fixing ring, and FIG. 7 is a side view of the same. 2... Hose, 3, 5... Connection pipe, 7...
Joint pipe, 8...ring-shaped lip, 9...protrusion.

Claims (1)

[Claims] 1. At the rear of the joint pipe to which the outer circumferential portion of one end of the hose is fixed with adhesive to the inner surface, a fixing ring is provided which is rotatably placed over the outer circumferential surface of the hose, and
These connecting pipes and fixing rings are rotatably inserted into the inner periphery of the connecting pipe, with the connecting pipe first, and the connecting pipe and fixing ring are prevented from rotating and removed by engaging the uneven parts formed on their opposing parts. A hose connection device that has a stopper and a ring-shaped lip and protrusion that connect airtightly between the tip of the connecting pipe and the inner surface of the connecting pipe.