JPS605296B2 - Vacuum cleaner suction tool - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a suction tool for a vacuum cleaner, and an object of the present invention is to reduce operational resistance and obtain a strong suction force.

In conventional suction devices, when the suction force is strengthened to improve suction performance, the adsorption force to the floor increases proportionally, making operation difficult and causing problems such as softening carpets, etc. In many cases, the suction force caused the suction force to stick to the carpet surface, resulting in an abnormally high suction force distribution in the center and a weak suction force at the edges, resulting in a decline in overall performance.

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

In the figure, reference numeral 1 denotes a suction device main body, which includes a suction groove body 2 and a membrane body 3 whose both ends are fixed to the suction device main body 1 and the suction groove body 2, making the suction groove body 2 vertically movable. ing.

4 is a lotus through hole, which includes the suction odor main body 1, the membrane body 3 and the suction groove body 2.
The airtight chamber 5 and the suction groove 6 are communicated with each other. Reference numeral 7 denotes a floor ground body, which is fixed to the suction conductor 2.

8 transmits the force from the suction odor main body 1 to the suction groove body 2 substantially horizontally under the suction odor.

Reference numeral 9 denotes a power transmission section, which in this embodiment is composed of wheels rotatably mounted on the suction odor bottom 8, and transmits operating force to the floor surface.

10 is a suction port.

In the suction tool having the above structure, the operation when the vacuum cleaner is operated will be described below.

Generally, in order to improve suction performance, the negative pressure in the suction groove 6 is increased to obtain a strong suction flow, but the suction groove body 2 is not affected by the angle of the suction odor main body 1 due to the membrane body 3. It is always grounded to the floor surface, the floor surface grounding body 7 works effectively, and the negative pressure in the suction groove 6 can be increased. Along with this, the suction force increases, frictional resistance increases, and the operating force is adversely affected, but the negative pressure is guided to the upper airtight chamber 5 through the communication hole 4
A downward force is applied to the suction odor main body 1 due to the difference between atmospheric pressure and the negative pressure of the airtight chamber 5, but this does not affect the suction groove body 2 due to the membrane body 3, and it is rotatably attached to the suction odor main body 1. It is transmitted to the floor by the wheels 9. When the depth of the groove exceeds a certain level, the negative pressure inside the suction groove 6 shows almost the same pressure distribution near the suction port 10 and at the end, and the inside of the suction groove 6 and the inside of the airtight chamber 5 have almost the same pressure distribution. pressure, so the ground contact area S of the suction groove body 2
, and a suction groove body 2 partitioned by a membrane body 2 forming an airtight chamber 5.
If the relationship between the area S2 of the top surface is S,>S2, the suction force S
, ×H=P, becomes larger than the force S2×H=P2 that tries to lift the suction groove body 2, and P and P2 cancel each other out, resulting in a suction force equal to the difference, and the force is applied to the power transmission part 8. Even when the suction conductor 2 is applied, the suction conductor 2 is pressed against the dimpled surface, so the suction force of the suction groove body 2 itself can be reduced compared to conventional suction tools without reducing suction performance. Furthermore, since the coefficient of friction of the wheels 9 is much smaller than that of the suction groove body 2, the resistance is greatly reduced. Since most of the operating force for moving the suction odor main body 1 is transmitted to the wheels 9, the suction groove body 2 is not adversely affected, and operational resistance can be reduced. Further, the suction groove body 2 is uniformly brought into close contact with a floor surface such as a carpet surface without being affected by the angle of the suction odor main body 1 due to the membrane body 3, and a stable suction force can be obtained. Furthermore, by increasing the depth of the suction groove 6 to a certain extent and making the negative pressure distribution within the suction groove 6 uniform throughout the entire suction device, it is possible to prevent the suction force from decreasing at the end of the suction device. . As described above, according to the present invention, the suction groove is provided with a lotus through hole, and the airtight chamber disperses the adsorption force to areas other than the suction groove, and the force is transmitted to the floor surface through a transmission section with low frictional resistance, so it is particularly effective for cleaning the floor. It is possible to obtain a suction tool that is easy to operate while ensuring high performance even on a floor surface where there is a large resistance to operation.

Further, since the suction groove body adjusts its force only by the pressure acting above and below it, there is no variation in performance, the structure is extremely simple, and failures can be reduced.

[Brief explanation of drawings]

Fig. 1 is a bottom view of a suction device according to an embodiment of the present invention, Fig. 2 is a sectional view taken along line A-A in Fig. 1, and Fig. 3 is a sectional view taken along line B-B in Fig. 1.
The sectional view and FIG. 4 are perspective views showing the relationship between the suction groove body and the membrane body. 1... Suction odor main body, 2... Suction groove body,
3...Membrane body, 4...Through hole, 5...Airtight chamber, 6...Suction groove, 9...Power transmission part, 10...
...・Suction port. Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] 1. A suction device main body having a suction port in the center and open to the bottom surface, a suction groove body having a suction groove and located at the bottom of the suction device main body and in contact with the floor surface, An airtight chamber formed by the suction tool body, the suction groove body, and the membrane body, which has a membrane body that connects the groove body so as to be movable up and down, and a power transmission part that transmits the force from the suction tool body to the floor surface. A communication hole is formed in the suction groove body to connect the suction groove and the airtight chamber, and the area of the airtight chamber is made smaller than the ground contact area of the suction groove body, so that the suction force on the floor surface of the suction groove body is raised higher than that of the suction groove body. A vacuum cleaner suction device designed to reduce force.