JPS6349488B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a suction tool for a vacuum cleaner.

Conventional vacuum cleaners have a suction port on the back cover of the suction device, but there are back cover parts on both sides of the suction port that do not have a dust collection function, and are used for cleaning rooms etc. In this case, the dust removal function for the corners, the so-called edge clean function, was hindered.

The present invention solves the above-mentioned conventional drawbacks and provides a suction tool for a vacuum cleaner that can reliably clean even the corners of a room.

In order to achieve the above object, the present invention forms a suction port in the width direction of the back plate, and provides recesses on both sides of the suction port, one facing the same suction port and the other facing the outside, and furthermore, this recess Several protrusions extending diagonally forward are formed on the front part of the board, and several protrusions extending diagonally backwards are formed on the rear part of the board, and the height of these protrusions is set to be the same as the bottom surface of the back plate. This is what I did.

During actual use, the suction tool moves back and forth over the surface to be cleaned. In the above configuration, when moving forward, the diagonally forward protrusion and when retracting, the diagonally rear protrusion act to collect dust from the surface to be cleaned to the suction port with the help of suction airflow, and thereby the room is cleaned. You can also clean corners accurately.

Examples thereof will be described below with reference to the accompanying drawings. In the figure, reference numeral 1 denotes a vacuum cleaner body constituting a suction device, which includes an electric blower 2, a rotating brush 4 that scrapes dust from the surface to be cleaned into a suction port 3, and a dust box 5 that collects dust. ing. The above vacuum cleaner body 1
consists of an upper main body 6 and a lower main body 7, and a handle 8 for operating the main body is pivotally mounted on the back surface of the main body so as to be tiltable. The dust box 5 includes a filter 9 for collecting dust, and is detachably attached to the main body 1 between the electric blower 2 and the rotating brush 4.

Rotation of the rotating brush 4 is transmitted by a belt 12 installed between a pulley 10 of the electric blower 2 as a driving source and a pulley 11 installed at one end of the rotating brush 4, and rotates around a shaft 13. The communication port from the suction port 3 to the dust box 5 includes:
A check valve 14 is provided to prevent backflow of dust.

Recesses 16 are provided on both sides of the suction port 3 provided on the lower surface of the lower body 7, so-called back cover, and a recess 16 is provided in front of the center of the suction port 3 from the end of the suction port 3 to the outer end of the suction device. The two protrusions 17 are placed diagonally forward toward
On the rear side of the center part, there is a similar protrusion 1 diagonally rearward from the end of the suction port 3 toward the outer end of the suction tool.
8 each. The number of the protrusions 17 and 18 is not limited to the number in the embodiment, and may be any appropriate number.

Therefore, when the suction tool moves forward, the protrusions 17 formed diagonally forward, and when the suction tool moves backward, the protrusions 18 formed diagonally rearward protect the sides of the suction tool. The other dust is also guided into the suction port 3. This induction effect is due to the physical force exerted on the dust by the protrusions 17 and 18 as the suction tool moves forward and backward, as well as the air flow flowing into the suction port 3 along the protrusions 17 and 18. .

To explain using FIGS. 6 and 7, when the dust at position A moves forward and reaches position D, the force of the protrusion 17 and the force from C to E It is carried to E by the air flow towards . Also, B
When the dust at position C reaches position C by the advance of the suction tool, it will be similarly carried along protrusion 17 to position E by the air flow from C to E. In the case of backward movement, there is a similar suction effect as shown in FIG.

As described above, according to the configuration of the present invention, the dust removal function not only at the opening of the suction port but also over the entire width of the suction device is improved by effectively utilizing both physical force and airflow pressure. This improves the edge clean function. Furthermore, since air is taken in from both ends of the suction tool through between the ribs, the pressure distribution within the suction port becomes uniform, and cleaning can be performed effectively. It should be noted that the present invention provides similar effects in a suction tool that does not use a rotating brush.

[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 sectional view of the main body of the vacuum cleaner, Figs. 3 and 4 are a plan view and a side view of the suction port,
Figure 5 is a rear perspective view of the suction port, Figures 6 and 7.
The figure is a partial plan view of the suction port for explaining the movement of dust. 3...Suction port, 7...Back cover (lower body), 17...
...Front-opening protrusion, 18...Rear-opening protrusion.

Claims (1)

[Claims] 1 Forming a suction port in the width direction of the back plate,
A recess is provided on both sides of the suction port, one facing the same suction port and the other facing the outside, and the front part of this recess has several protrusions extending diagonally forward, and the rear part thereof has several protrusions extending diagonally backward. A suction tool for a vacuum cleaner, in which each of the protrusions is formed, and the height of these protrusions is set to be the same as the bottom surface of the back plate.