JPS6110596Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a floor suction device for a vacuum cleaner.The floor suction device locks the connecting pipe connected to the suction source and simultaneously brakes the wheels. This is to prevent it from moving.

Floor suction tools, which are generally used in vacuum cleaners for cleaning carpets, etc., have an electric motor, a rotating brush driven by the electric motor, and moving wheels, as well as a tiltable connecting pipe connected to a suction source. We are prepared.

Therefore, since the weight of the floor suction tool itself is relatively large, the connecting pipe to the suction source is inclined when in use, and the connecting pipe is held vertically when storing or stopping operation.

Therefore, if the floor suction tool is placed on a sloped floor surface during storage or when the operation is stopped, there is a risk that it will automatically move under its own weight.

This proposal has been made in view of the above points, and the embodiment shown in the drawings will be described below.

Reference numeral 1 denotes a main body of a floor suction tool, and the main body has a box body 4 formed by an upper case 2 and a lower case 3, and an elongated suction chamber 5 provided in the front part has brushes 6, 6, a batter 7, A rotating brush body 8 having a brush body 7 is rotatably supported. Reference numeral 9 denotes an electric motor disposed at the rear of one side of the box body 4, which rotates the rotary brush body 8 via a belt 10. Reference numerals 11, 11 denote a pair of moving wheels, which are pivotally supported on an axle 13 fixed to rear support walls 12, 12 of the box body 4. 14 is a connecting pipe to a suction source (not shown) that is tiltably supported in a recessed part 15 formed between the moving wheels 12, 12, and a flexible bellows pipe 16 connects the suction chamber 5. It is connected to the central discharge port 17. 18 is a suction keeper provided in the lower case 3.

There are support shafts 1 on both sides of the lower part of the connecting pipe 14.
Support ribs 20 and 2 are provided with supporting shafts 19 and 19 on the inner surface of the upper case 2 of the box body 4.
0 and 21, 21, and one end 22 of one support shaft 19 is engaged with the connecting pipe 14 itself, and the other end 24 having a curved portion 23 is engaged with a support rib 25 on the inner surface of the box body 4. 26 are provided, and further below the support shafts 19, 19, bearing boss portions 2 of the moving wheels 11, 11 are provided in the inclined state of the connecting pipe 14.
7, 27 and a small gap 8, so that when the connecting pipe 14 is rotated to be vertical, the bearing boss portions 27, 2
a protrusion 29 having an arcuate portion 28 press-fittingly engaged with 7;
29 are integrally formed.

Next, the operation in the above configuration will be explained.

First, when the connecting pipe 14 is used by being inclined with respect to the floor suction tool main body 1 as shown by the solid line in FIG. , 29 and the bearing boss portions 27, 27 of the moving wheels 11, 11, there is a gap 8 between the moving wheels 11, 11.
It is freed from 9 and 29 and can rotate freely.

On the other hand, when the connecting pipe 14 is rotated against the elastic force of the torsion coil spring 26 and is kept vertically as shown by the dotted line in FIG.
Since the respective arcuate portions 28 of the connecting tube 14 are locked and held vertically in pressure contact with the bearing bosses 27, 27 of the moving wheels 11, 11, the bearing bosses 27, 27 are not braked. As a result, the moving wheels 11, 11 cannot rotate. In other words, in this case, the protrusions 29, 29 of the connecting pipe 14 and the moving wheel 1
The bearing bosses 27, 27 of 1 and 11 constitute a braking means, and the moving wheels 11, 11 are reliably locked when the connecting pipe 14 is stored vertically or when the operation is stopped.

As described above, the floor suction device of the vacuum cleaner according to the present invention has a rotary brush driven by an electric motor or the like rotatably arranged in the suction chamber formed in the front part of the box body, and a bearing boss in the rear part of the box body. a floor suction tool body provided with wheels for movement through a portion; a connecting pipe rotatably supported by a pair of support shafts at the rear of the main body; and a connecting pipe attached to one of the support shafts with one end a torsion coil spring that is engaged with the connecting pipe and whose other end is engaged with the box; and a torsion coil spring that is integrally formed with the lower end of the connecting pipe to maintain a small gap with the bearing boss while the connecting pipe is tilted. A protrusion having an arcuate portion that presses into engagement with the bearing boss when the connecting pipe is rotated to be vertical, and the protrusion and the bearing boss constitute braking means for the moving wheel. because there is,
When storing or stopping operation, the wheels are locked at the same time as the connecting pipe is vertically locked, thereby preventing the floor suction tool from moving due to the inclination of the floor surface.

[Brief explanation of the drawing]

Figure 1 is an explanatory cross-sectional view of the main parts of the proposed floor suction tool, Figure 2 is a plan view with the lower case removed from Figure 1, Figure 3 is an enlarged view of the main parts of Figure 2, and Figure 4 is Third
It is an AA cross-sectional view of the figure. 1... Main body, 8... Rotating brush body, 11, 11
...Transportation wheels, 14...Connection pipe, 29, 29...
...Protrusion, 27, 27...Bearing boss part.

Claims (1)

[Scope of utility model registration request] A floor suction device main body, in which a rotary brush driven by an electric motor or the like is rotatably arranged in a suction chamber formed in the front part of a box body, and wheels for movement are provided at the rear part of the box body via a bearing boss part. and a connecting pipe rotatably supported by a pair of support shafts at the rear of the main body;
a torsion coil spring attached to one of the support shafts, one end of which locks to the connecting tube and the other end of which locks to the box; and a torsion coil spring that is integrally formed at the lower end of the connecting tube to tilt the connecting tube. a protrusion having an arcuate portion that maintains a small gap with the bearing boss and press-fits into the bearing boss when the connecting pipe is rotated to be vertical; A floor suction tool for a vacuum cleaner, characterized in that a brake means for moving wheels is configured by: