JPS6142571B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a suction tool for a vacuum cleaner with improved dust absorption characteristics.

Generally, in this type of suction tool, the lower surface is held at a distance from the surface to be cleaned using rollers or brushes in order to prevent deterioration in operability due to adsorption of the suction tool to the surface to be cleaned. It's like this.

However, the existence of the above-mentioned interval weakens the suction force against the surface to be cleaned and deteriorates the dust absorption characteristics.

Therefore, recently there has been a demand for a suction device that has a lip made of rubber or the like on the front and back of the suction device, which isolates the suction portion from other parts and improves the dust suction characteristics.

It is true that the type with this lip can improve the dust suction characteristics, but the bending direction of the lip is reversed when the suction tool moves forward or backward, which gives the operator a sense of discomfort, and the friction of the lip makes it difficult to operate. There was a major drawback.

The present invention eliminates the above-mentioned conventional drawbacks and improves both the operability and the dust suction characteristics.Examples thereof will be described below with reference to the accompanying drawings.

In Figures 1 to 3, reference numeral 1 denotes a suction tool body with a connecting pipe 2 pivotably mounted on the rear thereof, and rollers 3 and 4 at the front and rear of the lower surface, and rollers 3 and 4 in between to scrape dust off the surface to be cleaned. A lifting brush 5 is provided respectively.
6 is a suction port connected to the connecting pipe 2, 7 is a suction groove that communicates with the suction tool 6 at the center and extends in the longitudinal direction of the suction tool main body 1, and 8 is arranged in parallel before and after the suction groove 7. This is a recessed portion that is open to the lower surface of the suction tool main body 1. Reference numeral 9 designates a support shaft whose ends are fixed inside both sides of the recess 8, and 10 represents a pipe material loosely fitted onto the support shaft.

In the above configuration, when the connecting pipe 2 is connected to the vacuum cleaner and suction operation is started, the suction force acts on the suction groove 7 through the suction port 6, and the vacuum cleaner A starts sucking dust from this. It is something that can be done.

Also, a part of the pipe material 10 loosely fitted to the support shaft 9 projects downward from the recess 8 due to its own weight and comes into contact with the surface A to be cleaned, and further abuts against the vertical wall 8a of the recess on the suction groove 7 side due to suction force.

Therefore, since the front and back of the suction groove 7 are blocked by the pipe material 10, a strong suction force acts on the part surrounded by the pipe material 10, and higher dust absorption characteristics are obtained. Dust present in the recesses of surface A can also be reliably sucked.

Incidentally, the pipe material 10 is loosely fitted to the support shaft 9, and is hardly constrained in terms of movement. Therefore, even if there is relatively large debris in the direction of movement of the suction tool, the pipe material 10 will easily climb over it, and depending on the situation of the surface A to be cleaned, it may roll. It also has very good operability.

In addition, if a plurality of pipe materials 10' are loosely fitted to the support shaft 9 as shown in FIG. 4, each pipe material 10' can follow changes in the surface A to be cleaned well, and in particular, the dust absorption characteristics can be further improved. It is something.

As described above, according to the present invention, the suction force in the suction groove is strengthened by the pipe materials provided before and after the suction groove, thereby improving the dust suction characteristics, and since the pipe is loosely fitted to the support shaft, It has a good ability to follow the movement of the suction tool, and does not give an uncomfortable feeling like a conventional lip, and can greatly improve operability.

[Brief explanation of the drawing]

FIG. 1 is a bottom view of a suction device showing an embodiment of the present invention, FIG. 2 is a sectional view, and FIG. 3 is an enlarged sectional view of main parts.
FIG. 4 is a sectional view showing another embodiment of the pipe material. 6... Suction port, 7... Suction groove, 8... Recess, 9
...Spindle, 10,10'...pipe material.

Claims (1)

[Scope of Claims] 1. A suction device main body having a connecting pipe connected to the suction side of the vacuum cleaner at the rear thereof is provided with a suction port and a suction groove communicating with the suction port in the left and right direction, and the front and rear of the suction port are A recess parallel to the suction groove is provided in the
A suction tool for a vacuum cleaner, characterized in that each of these recesses is provided with a pipe member loosely fitted and supported by a support shaft and movable in the longitudinal direction thereof. 2. The suction tool for a vacuum cleaner according to claim 1, wherein a plurality of pipe materials are provided for each recess.