JPS59222694A - Hose connector - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

The configuration of the conventional example and its problems Figures 1 and 2 show the conventional hose connection device, so
The hose 721 has a structure in which it is attached directly to the connecting pipe 22, and is also fixed by pressing the crease 26 of the hose 21 through the ribs 25 provided on the back side of the hose cover 23 and the hose holder 24. be. As a result, the following problems occurred.

■ During the hose assembly work, when the hose cover 23 and hose holder 24 are inserted into the predetermined positions of the connecting pipe 22 and fitted together, the lip 25 provided on the back side is inserted into the folded valley part 26 of the hose 21. It is necessary to make sure that it is in the correct position, and the alignment is an important control point, and the workability is also poor. Furthermore, the hose connection part lacks airtightness.

■・ Since the hose is directly fixed 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 in the same place during use, which tends to cause fatigue to concentrate in that part, which shortens its lifespan. .

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. There is.

Structure of the Invention The present invention provides a fixing ring that covers the outer peripheral surface of the hose at the rear of a connecting pipe to which a hose is connected, and a fixing ring that is rotatable on the inner circumference of the connecting pipe, with the connecting pipe and the fixing ring first. The connecting pipe is inserted into the connecting pipe and the fixing ring is prevented from rotating, and a ring-shaped lip and protrusion are formed to airtightly join between the tip of the connecting pipe and the inner surface of the connecting pipe. This ensures airtightness of the joints and improves ease of assembly.

Description of Examples 1. The embodiment will be explained below with reference to the attached drawings. 2 First, Fig. 3 shows an example adopted in a vacuum cleaner. That is, 2 has a connection pipe 3 inserted into the suction side of the vacuum cleaner main body 1 at one end, and an extension pipe 4. 6 indicates a floor nozzle connected to the tip of the extension pipe 4.

The connection structure of the hose 2 to the connection pipe 3 and the curved connection pipe 5 is the same as 6D, and the following explanation will be given only for one side of the connection pipe 3. In FIGS. 4 to 7, the hose 2 is reliably adhesively fixed to the inner surface of the connecting pipe 7 via a connecting agent. A thin ring-shaped lip 8 is provided at the tip of the connecting pipe 7, 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. The airtightness of the connecting pipe 7 is maintained. 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 is provided at the rear of the connecting pipe 7 and is attached to the outer peripheral surface of the hose 2. 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 a protrusion 12 with an elasticity of four cuts or more.

The outer diameter of the connecting pipe 7 is set to a value that allows it to come into pressure contact with the inner surface of the connecting pipe 3 when inserted.

Glue the joint pipe 7 to one end of the hose 2 as described above,
With the fixing ring 10 attached to its rear part, insert it into the inner surface of the connecting pipe 3, fit the fixing ring's 1° protrusion 12 into the notch 13 provided in the connecting pipe 3, and then attach the hose 2. is connected to 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. If this can be restored and the usability can be improved, the life of the hose can also be extended. Also, when assembling the hose, apply adhesive to the outer periphery of one end of the hose or the inner surface of the connecting pipe to adhesively fix the two, and then attach a C-shaped elastic fixing ring to the rear of the connecting pipe. Then, all you have to do is insert it into the inner surface of the connecting pipe and fit the protrusion of the fixing ring into the notch on the connecting pipe, which makes it very easy to attach and detach the hose. It is something that is produced.

[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. 6 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, 3,6...Connection pipe, 7...Connection pipe, 8...Ring-shaped lip, 9...Protrusion Department. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2

Claims (1)

[Claims] At the rear of the connecting pipe to which the hose is connected, a fixing ring is provided that covers the outer circumferential surface of the hose, and these connecting pipes and fixing rings are rotatably inserted into the inner circumference of the connecting pipe with the connecting pipe first, and then connected. The pipe and fixing ring prevent rotation, join the hose and the connecting pipe, and also form a ring-shaped lip and protrusion that connect airtightly between the tip of the connecting pipe and the inner surface of the connecting pipe. hose connection device.