JPS6115786Y2 - - Google Patents

Description

[Detailed explanation of the idea] This invention relates to a floor cleaning tool.

Conventionally, a case that runs on the floor is formed with a suction opening at the bottom and a suction air passage that has a nozzle that throttles the airflow from the suction opening, and an air turbine is provided at the rear of the nozzle and connected to the air turbine. There is a device in which a brush body is provided facing the suction opening, and the suction airflow drives an air turbine to release dust adhering to the carpet by rotation of the brush body, thereby promoting the dust suction effect. When cleaning tatami mats, the air turbine and brush body are stopped by increasing the opening of the nozzle and reducing the velocity of the suction airflow, but by changing the opening of the nozzle, the suction Efficiency becomes inconsistent. Furthermore, even if it is desired to stop the brush body, the air turbine and the brush body have the disadvantage of rotating when connected to a commercial dust collection unit with a large suction force.

This invention was developed in view of the above-mentioned points, and the purpose is to provide a floor cleaning tool that can reliably switch the rotation stop of the brush body and that does not impair suction efficiency.

When cleaning carpets, the air turbine and brush body are rotated by releasing the clamp from the locking part, and when cleaning tatami mats, etc., the blades of the air turbine are moved by the clamp to the inner surface of the case. The structure is such that the brush body is locked at a position where there is a large gap between the brush body and the brush body, so that the brush body can be reliably stopped without changing the suction air volume or speed, and therefore the suction efficiency is not impaired. .

An embodiment of this invention will be described based on the drawings. Reference numeral 1 denotes a vacuum cleaner main body formed by connecting an electric case 2 containing an electric blower (not shown) and a dust case 3, which is a dust collection section and housing a filter (not shown). A flexible hose 4 and an extension pipe 5 are sequentially connected to the dust case 3.

Next, a case 6 is provided. This case 6 is made by joining an upper case 7 and a lower case 8, which rotatably hold a rotary tube 9 and also hold a bumper 10 between them. A suction opening 11 is formed in the front of the lower surface of the case 6, and a suction air passage 13 is further formed in which the airflow from the suction opening 11 is narrowed by a nozzle 12 and guided to the rotary tube 9. Next, an air turbine 14 is provided in the case 6 behind the nozzle 12 with a part of its outer periphery interfering with the suction air passage 13 . The shaft 15 of this air turbine 14 is supported by a cylindrical shaft 17 held by a rib 16 metamorphosed within the case 6.
A pulley 18 is connected to one end of 5. Further, a brush body 19 located directly above the suction opening 11 is rotatably held in the case 6.
A pulley 21 connected to the pulley 18 by a belt 20 is fixed to one end of the brush body 19. The air turbine 14 has six blades 22, and a locking portion 23 formed by a notch located in the middle of each blade 22 is formed on the outer periphery of one side. A clamp 24 is slidably provided on the case 6 directly above the axis of the air turbine 14 when viewed from above. This clamp 24
has a protruding piece 25 that engages with the engaging portion 23 and a knob 27 that projects from a window 26 formed in the upper case 7.

In such a configuration, the rotary tube 9 is connected to the extension tube 5.
Connect to and drive an electric blower to clean. When cleaning a carpet, the clamp 24 is removed from the locking portion 23. As a result, the outside air containing dust is removed from the suction opening 1.
At this time, the air turbine 14 is rotated by the wind narrowed by the nozzle 12 and drives the brush body 19. In addition, when cleaning tatami mats, etc., the air turbine 14 is locked by the clamp 24, and the brush body 19 is
definitely stop. In this way, air turbine 1
There is no need to change the opening amount of the nozzle 12 whether the nozzle 4 is rotated or locked. Further, the protruding piece 25 of the clamp 14 locks the air turbine 14 at the 12 o'clock position, and the locking part 23 is located between the six blades 22, so that the air turbine 14 can be locked at the 12 o'clock position, and the locking part 23 is located between the six blades 22. As shown, the bottom 2 of the suction air passage 13
The tips of adjacent blades 22 are located at symmetrical positions with respect to a straight line 29 that passes through the center of the air turbine 14 and is perpendicular to the straight line 8 . Thereby, a distance h between the tip of the blade 22 and the bottom 28 of the suction air passage 13 is secured. It is clearly seen that this dimension h is larger than the dimension h' when the lower end of the blade 22 is located at 6 o'clock on the clock hand, as shown in FIG. 5b. That is, the flow of intake airflow is not obstructed.

Note that an electric blower or a dust collector may be provided inside the case.

Since this device is configured as described above, it is possible to reliably switch between rotation and locking of the air turbine and brush body using the clamp, and in this case, there is no need to change the opening amount of the nozzle, and the air turbine Since the blades are locked at a position where there is a large distance between them and the inner surface of the case, there is no change in the suction air volume or wind speed, which has the effect of preventing a decrease in suction efficiency. .

[Brief explanation of the drawing]

The drawing shows one embodiment of this invention.
The figure is a side view, Figure 2 is an enlarged vertical side view of the case, Figure 3 is an enlarged plan view of the case with a part cut away to show the inside, and Figure 4 is an air turbine and clamp. FIG. 5 is an explanatory diagram showing the stop position of the air turbine from the side. 3...Dust case, (dust collecting section), 6...Case, 11...Suction opening, 12...Nozzle, 13...
...Suction air path, 14...Air turbine, 19...
Brush body, 23...Locking part, 24...Clamp,
29...straight line.

Claims (1)

[Scope of utility model registration request] A case that runs on a floor surface is provided with a suction opening opening at the bottom and a suction air path having a nozzle that throttles the airflow from the suction opening, and a brush body is provided that faces the suction opening and contacts the floor surface, An air turbine having a plurality of radial blades interfering with the suction airflow flowing through the suction air path is provided in the case, the air turbine and the brush body are connected to each other, and a locking portion is formed on the air turbine. and a floor characterized in that the case is provided with a clamp that locks the air turbine by engaging with the locking portion of the air turbine at a position with a large distance between the blade and the inner surface of the case. cleaning tools.