JPS6018209Y2 - vacuum cleaner - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a vacuum cleaner that ensures air tightness between a suction port and a connecting pipe and improves the operability of attaching and detaching the connecting pipe.

In conventional vacuum cleaners, the air-tight structure between the suction port and the connecting pipe is achieved by attaching an annular backing to the suction port, and attaching a lip formed circumferentially to the inner surface of the annular backing to the connecting pipe. Most of them were made to make elastic contact with the outer peripheral surface.

However, with the above configuration, complete air tightness must be achieved through elastic contact between the lip and the connecting pipe, and therefore it is necessary to make the degree of elastic contact considerably strong.

Therefore, it is difficult to attach and detach the connecting pipe, and the lip is easily damaged.

The present invention solves the above-mentioned conventional drawbacks, and embodiments thereof will be described below with reference to the accompanying drawings.

In the figure, reference numeral 1 denotes a main body with a built-in fan motor 2 and the like at the rear, and a dust collection chamber 3 is located on the suction side of the fan motor at the front.

4 is a lid for opening and closing the dust collection chamber 3; 5 is a buckle thereof; 6 is a lid for a mechanism chamber 7 containing a built-in fan motor 2, etc.; 8 is a switch pedal; 9 is a cord reel take-up pedal; 10 is a handle; 11 is a cylindrical suction port formed on the front wall of the dust collection chamber 3;
An annular rib 12 is provided at the rear of the inner circumference.

Reference numeral 13 indicates an annular backing made of an elastic material such as rubber, which is attached to the inner periphery of the suction port 11 by engaging the annular structure 14 formed on the outer periphery with the rib 12, and the front end and the inner periphery in the middle of the backing. In the circumferential direction, pointed lips 15 and 16 are integrally formed.

Reference numeral 17 denotes a pair of bayonet mechanism grooves formed in the peripheral wall of the suction port 11 in front of the rib 12, and consists of an axial direction groove 117a and a circumferential direction groove 17b.

The circumferential groove 17b is open to the inner and outer circumferential surfaces, and has a wide locking portion 18 at its terminal end.

On the other hand, 19 is a connecting pipe that is detachably inserted into the annular backing 13 of the suction port 11. When this pipe is inserted, a lip 16 comes into elastic contact with the outer periphery of the tip, and a flange 2 provided in the middle
The lip 15 is designed to come into elastic contact with one surface of the 0.

21 is the protrusion of the bayonet mechanism, and the flange 20
It protrudes from the outer periphery of the.

In addition, 22 is a dust collection bag placed in the dust collection chamber 3, and the core part 23 is
is fitted into the rear outer periphery of the annular backing 13.

24.25 are the front and rear wheels.

In the above configuration, the connecting pipe 19 is attached by first passing its tip through the annular backing 13, and then advancing the protrusion 21 along the axial groove 17a.

During this forward movement, the lip 1 is attached to one side of the flange 20.
5 is in elastic contact with the lip 15. Therefore, after advancing the protrusion 21 against the elasticity of the lip 15 until it reaches the circumferential groove 17b, and then rotating it slightly clockwise, the elasticity of the lip 15 will cause the protrusion 21 to come into contact. 21 is engaged with the locking portion 18 to prevent the waist from coming off.

In the above, air tightness is ensured by the elastic contact between the lip 16 of the annular backing 13 and the outer peripheral surface of the connecting pipe 19 and the elastic contact between the lip 15 and one surface of the flange 20.

In addition, since the air tightness is performed at two locations as described above, there is no need to make the elastic contact as strongly as in the past, and therefore the installation does not require much force for operation. Damage to the lip portion can also be prevented.

The connection pipe 19 can be removed by following the procedure reverse to the above-mentioned installation procedure.

Note that the groove 17 and protrusion 21 of the bayonet mechanism may be reversed from those in the above embodiment.

As explained above, according to the present invention, not only can air tightness between the suction port and the connecting pipe be ensured, and efficient cleaning can be performed, but also the connecting pipe can be easily attached and detached, and It is possible to minimize damage to the material, and has excellent practical effects.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a vacuum cleaner showing an embodiment of the present invention, Fig. 2 is a partially cutaway sectional view, Fig. 3 is an exploded perspective view of the connecting part of the connecting pipe, and Fig. 4 is a front view. be. 2...Fan motor, 3...Collection room,
11... Intake port, 13... Annular backing, 15.16... Lip, 17...
・Groove, 17a...Axial groove, 17b...
・Circumferential groove, 18...Locking part, 19...
...Connection pipe, 20...Flange, 21...
····protrusion.

Claims (2)

[Scope of utility model registration request] (1) A fan motor, a dust collection section, an inlet equipped with an annular backing, and a connecting pipe that is removably inserted into the upper air inlet using a bayonet mechanism and whose tip part passes through the annular backing. The annular backing has a lip on its inner periphery that comes into close contact with the outer peripheral surface of the connecting pipe, and a lip that comes into close contact with one surface of the flange of the connecting pipe on its tip, and the bayonet mechanism A vacuum cleaner comprising an axial groove and a circumferential groove formed on one side of a connecting pipe and communicating with each other, and a protrusion formed on the other side and fitted into the axial groove and the circumferential groove. . (2) A part of the circumferential groove of the bayonet mechanism is widened to form a locking part, and one protrusion of the bayonet mechanism is removably locked to this locking part. 1
Vacuum cleaner as described in section.