JPH0363893B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a hose for a vacuum cleaner used in general households, and particularly to the configuration of its end connection part.

BACKGROUND OF THE INVENTION FIG. 6 shows a conventional hose connection.

The end of the hose tip pipe 1 consists of a suction pipe 2, a connecting pipe 4 to which an extension pipe or suction nozzle insertion pipe part 3 is connected, and an upper member set on the suction pipe 2. A double pipe section is formed in the section.
The inner pipe part of the double pipe part is the connecting pipe 4, and the outer pipe part is
It consists of a semi-cylindrical outer wall portion 9 protruding from the tip of the upper member 5 and the tip of the suction tube 2. A locking body 10 is disposed between the inner tube portion and the outer tube portion, and locks the insertion tube portion 3 of the extension tube that fits inside the inner tube portion. That is, an operation button 9 protrudes outward from the operation hole 12 of the upper member 5, a pair of elastic leg pieces 14 that protrude from the operation button 9 to both sides and have an inward biasing force, and these elastic legs 14. It is locked by a claw 17 that is formed from the inside of the leg piece 14, passes through the through hole 15 of the connecting tube 4, and engages with a locking recess 16 on the outer periphery of the insertion tube section 3.

The inner tube portion, that is, the connecting tube 4 is inserted into the distal end of the suction tube 2 and fixed by adhesive.

Problems to be Solved by the Invention In the above configuration, the connecting tube 4 is glued to the tip of the suction tube 2, but since a load is applied to the connecting section with the extension tube when using a vacuum cleaner, the connecting tube 4 is glued to the tip of the suction tube 2. 4
If the adhesive force between the suction tube 2 and the suction tube 2 is weak, the connecting tube 4 will come off.

Therefore, the fitting distance between the connecting tube 4 and the suction tube 2 had to be increased, and the end portion of the tip pipe 1 became larger accordingly, making it difficult to use and difficult to store.

The above configuration is a necessary configuration for arranging the lock body 10, and the only way to form the shape of the connecting tube 4 is to fix the connecting tube 4 as a separate component to the suction tube by adhesive or other means. Ta.

Therefore, there has been a need for a structure that increases adhesive strength and does not make the connecting portion too large.

The present invention solves these problems, and provides a hose that securely fixes the connecting tube to the suction tube and does not increase in size.

Means for Solving the Problems In order to solve the above-mentioned conventional problems, the present invention has the following features:
The distal end of the hose, which has a double pipe section at the end, consists of a lower member that forms a suction pipe with the upper member, and a connecting pipe that is inserted into the suction pipe, and the outer pipe part of the double pipe part is connected to the upper member. It consists of the end of the tube and the outer wall protruding from the lower member, and the inner tube consists of a connecting tube, and the connecting tube is glued or welded at the insertion part with the suction tube, and is further provided at the tip of the connecting tube. The flange is welded to the outer wall.

Effects According to the above configuration of the present invention, even if the fitting portion between the connecting tube and the suction tube is made small, the flange provided at the tip of the connecting tube and the outer wall portion protruding from the suction tube are fixed. Therefore, the connecting pipe is supported and fixed at almost both ends, and is strong against the prying force that occurs at the connecting part when the extension pipe is shaken.
Moreover, since the fitting part with the suction tube can be made small, the connecting tube can be securely fixed, and the shape of the tip part can be made small.

Example Examples thereof will be described below with reference to the accompanying drawings.

In FIGS. 1 to 5, reference numeral 21 denotes a vacuum cleaner, which suctions and collects dust sucked by a suction nozzle 22 through two extension pipes 23 and a hose 24.

The hose tip 25 has a built-in switch 26 for starting, stopping, and automatically controlling the vacuum cleaner 21 at hand, and also has a connecting portion 27 formed at the tip.
It is designed to connect an extension pipe to.

The hose tip 25 is a combination of an upper member 28 and a lower member 29. The lower member 29 is formed with a suction pipe 30 for sucking dust, and the suction pipe communicates with the hose 24. The switch 26 and the like are arranged between the upper member 28 and the suction tube 30.

The connecting portion 27 forms a double tube portion 33 by fixing a connecting tube 32 that fits into an insertion tube portion 31 such as an extension tube 23 . In other words, the double pipe section 33
The outer tube portion 34 is formed from an end portion 35 of the upper member 28 and an outer wall portion 36 that projects from the lower member 29 and is combined with the upper member 28 to form an outer shell. Consists of.

A lock body 39 is disposed in a space 39 between the inner and outer tube portions 37 and 34, and a lock body 39 is provided in the space 39 between the inner and outer tube portions 37, 34.
Stop 1.

The lock body 39 includes an operation button 41 that protrudes outward from the operation hole 40 of the outer tube portion 34, and a pair of elastic legs 42 that protrude from the operation button 41 to both sides and have an inward biasing force. , claws 45 formed from the inside of these elastic leg pieces 42 and penetrating through the through holes 43 of the inner tube section 37 and engaging with the locking recesses 44 on the outer periphery of the insertion tube section 31.
, and due to the inward biasing force of the leg piece 42,
The pawl 45 is coupled and locked in the locking recess 44 .

To cancel the connection, push the operation button 41 downward so that the tip of the leg piece 42 touches the stopper 4.
6, the leg piece 42 is stretched outward, so that the leg piece 42 bulges outward, and the claw 45 is disengaged from the locking recess 44.

The rear portion of the connecting tube 32 is fitted into the suction tube 30, and the fitting portion 47 is fixed by adhesive.

Furthermore, a flange 47 provided at the tip of the connecting pipe 32
The inner surface of the end portion 35 of the upper member 28 and the lower member 29
The flange 47 is in contact with the inner surface of the outer wall 36 of the
The lower half of the outer circumference and the inner surface of the outer wall portion 36 are fixed by ultrasonic bonding.

In the above configuration, the suction nozzle 22, the extension pipe 2
3. Connect each hose 29 and vacuum cleaner 2
1, normally the tip 25 is held and cleaned, but the suction nozzle 22 and the extension tube 24 are shaken by holding the tip 25 (prying force).
will be added to the connection portion 27.

However, since the rear part of the connecting tube 32 is fitted into the suction tube 30 of the lower member 29 and is bonded, the flange 47 provided at the tip of the connecting part 32 is also welded to the outer wall 36 of the lower member 29. This means that the connecting pipe 32 is fixed over a long span and cannot be easily removed even if a prying force is applied to the connecting pipe 32.

Therefore, the connecting tube 32 is not securely fixed to the lower member, and the fitting distance to the suction tube 30 can be shortened, so that the entire connecting portion can be made smaller.

Furthermore, although the flange 47 and the outer wall portion 36 are fixed by welding, since the outer tube portion 34 is divided into upper and lower halves by the upper member 28 and the lower member 29,
Welding can be carried out by pressing the flange 47 against the outer wall 36 from above without the upper member 28 and applying slight vibrations, making the welding work easy.

It goes without saying that welding may be used as a method of fixing the rear part of the connecting tube and the suction tube 30.

Effects of the Invention As described above, the present invention has the following advantages: the rear part of the connecting pipe fixed to the tip of the hose is glued or welded to the suction pipe of the lower member, and the flange formed at the tip is welded to the outer wall of the lower member. Therefore, both ends of the connecting pipe are supported and fixed, and the entire length of the connecting part can be used for fixation. Therefore, the fitting portion with the suction tube is also made smaller, and the tip of the hose can be made smaller, making it easier to use and store, as well as making the work for fixing it easier.

However, the connecting pipe can be securely fixed, and a boss with excellent strength can be provided.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view showing an embodiment of the present invention, Fig. 2 is a partial assembled perspective view, Fig. 3 is a partial sectional view, Fig. 4 is a partial perspective view, and Fig. 5 is an overall perspective view. 6 are exploded perspective views showing a conventional example. 24...Hose, 25...Hose tip, 28
... Upper member, 29 ... Lower member, 30 ... Suction pipe, 32 ... Connection pipe, 33 ... Double pipe section, 34 ...
...Outer tube part, 36...Outer wall part, 47...Flange.

Claims (1)

[Claims] 1. An upper member, a lower member forming a suction tube,
The outer pipe part is fixed to the suction pipe and includes a connecting pipe that fits into an extension pipe, etc., and is composed of the end of the upper member and the outer wall part protruding from the lower member. In addition to forming a heavy pipe section, the rear part of this connecting pipe is fixed to the suction pipe by gluing or welding,
A vacuum cleaner hose comprising a flange formed at the tip of the connecting pipe and fixed by welding to an outer wall protruding from the lower member.