JPS6142573B2 - - 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, a device has been proposed in which a lip made of rubber or the like is provided before and after the suction part, and the lip is used to isolate the suction part from other parts, thereby improving the dust absorption 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 operability and dust absorption 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 port 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 denotes a support shaft whose ends are fixed inside both sides of the recess 8, 10 a pipe material loosely fitted onto the support shaft, and 11 provided in the longitudinal direction of the front of the recess 8 at the front to indicate the open area of the recess 8. It is a cover that narrows down the area. This cover 11 is made of a magnetic material and is attracted and supported by a magnet 12 fixed to the bottom surface of the suction tool main body 1.

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.

By the way, the pipe material 10 is fitted around the support shaft 9, and is hardly constrained in terms of operation. Therefore, even if there is relatively large debris in the direction of movement of the suction tool, the pipe material 10 can easily overcome it, and it also rolls due to friction with the surface to be cleaned A, which improves operability. It will be very good.

By the way, in the suction tool having the above configuration, the pipe material 10 draws dust into the recess 8 by its rotation, and this is particularly noticeable when the pipe material 10 is made of an insulating material such as synthetic resin that generates static electricity. . Further, the above phenomenon occurs in the pipe material 10 on the front side of the suction groove 7, and hardly occurs on the rear side.

The amount of dust that enters into the recess 8 is regulated as the width of the recess 8 is smaller and the gap with the pipe material 10 is smaller. However, with this configuration, it becomes difficult to remove dust from the recess 8, and conversely, When the width is increased, it becomes easier to remove internal dust, but on the other hand, the amount of dust that gets mixed in increases.

However, with the above configuration, since the degree of opening of the recess 8 is restricted by the cover 11, the amount of dust that gets into the recess 8 is small, and the dust inside the recess 8 can be removed by removing the cover 11. This can be easily done by increasing the degree of opening.

It is also conceivable to provide the cover 11 in the rear recess 8 if necessary.

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. Further, the amount of dust that gets into the recessed portion is small, and the dust can be easily removed. Further, metal objects such as pins on the surface to be cleaned are collected by the cover attracted by the magnet, thereby preventing damage to the dust collecting section of the vacuum cleaner, which is an excellent effect.

[Brief explanation of the drawing]

FIG. 1 is a bottom view of a suction tool showing an embodiment of the present invention, FIG. 2 is a cross-sectional view, and FIG. 3 is an enlarged cross-sectional view of a main part. 6... Suction port, 7... Suction groove, 8... Recess, 9
...Spindle, 10,10'...Pipe material, 11...
Cover, 12...Magnet.

Claims (1)

[Claims] 1 A suction device body that has a connecting pipe connected to the suction side of the vacuum cleaner at the rear has a suction port and a suction groove communicating with the suction port formed in the left and right direction, and a suction groove parallel to the suction groove is formed in front and behind the suction groove. A recessed part is provided,
In these recesses, pipe materials loosely fitted and supported by support shafts are provided movably in the longitudinal direction, and further,
A magnet is attached to at least the bottom surface of the suction device body adjacent to the front recess, and a cover made of a magnetic material is detachably attached to narrow the opening of the recess in the longitudinal direction through the magnet. Suction tool for vacuum cleaner.