JPS6113811B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an electric floor suction device with rotating brushes.

Structure of conventional example and its problems In the conventional electric floor suction device, due to the product's characteristics of being small and lightweight, the suction device can be easily turned over, and the suction device installed on the bottom of the suction device Since the rotating brush, which rotates at a high speed of 3,000 to 5,000 revolutions per minute, is exposed to the user, there is a risk of a serious accident even if the user's hands, feet, etc. come into contact with the rotating brush.

OBJECTS OF THE INVENTION The present invention eliminates these conventional drawbacks and provides an electric floor suction device that is easy to use and highly safe.

Structure of the Invention The electric floor suction tool of the present invention includes an electric motor, a rotating brush, a shaft portion of the rotating brush that is slidable in the axial direction, and is integrated with the same rotating brush when sliding in one direction, and A pulley that is substantially separated when sliding in the direction, a belt that transmits the rotation of the electric motor to the pulley, a clutch rod that slides the pulley in the axial direction, and a pulley that is substantially separated from the rotating brush. and means for biasing the clutch rod to displace the clutch rod in the direction in which the clutch rod is moved, and in the energized state, a portion of the clutch rod protrudes from the bottom plate of the suction tool main body, thereby separating the suction tool main body from the surface to be cleaned. The rotating brush automatically stops when the brush is turned on, thereby ensuring worker safety.

DESCRIPTION OF EMBODIMENTS The embodiments will be described below with reference to the accompanying drawings.

In Figures 1 to 4, 1 is a vacuum cleaner, 2
3 is a hose and an extension pipe connected to the vacuum cleaner 1; 3 is a power line for electrically connecting the electric motor 5 built into the electric floor suction device body 4 and the vacuum cleaner 1; 6 is a power line This rotating brush is linked to an electric motor 5 via a belt 7 and rotates at 3000 to 5000 per minute to scrape up dust on the floor. The rotating brush 6 is provided with a bearing 8 and a pulley 9, and the rotational force of the belt 7 is transmitted to the pulley 9, and the rotation of the pulley 9 is further transmitted to the rotating brush 4 by a spring force or the like. 10 is a clutch rod, and a shaft support 11
It is designed to perform a rocking motion centered on
The opening 1 of the back plate 13 is always connected via the coil spring 12.
The end portion 15 is set so as to protrude from the tip 4. Further, an end 16 opposite to the end 15 is located between the brush 6 and the pulley 9. Furthermore, the connection structure between the rotating brush 6 and the pulley 9 will be described in detail below. The shaft portion 6a of the rotating brush 6 and the inner diameter portion 9a of the pulley 9 are provided with the same taper. Normally, the pulley 9 slides in the direction of the rotating brush 6 by a coil spring 18 via a spacer 17, and the tapers It's in close contact. That is,
In this state, the pulley 9 is fastened to the rotating brush 6 via the shaft portion 6a. Further, when the end of the clutch rod 10 is inserted between the pulley 9 and the rotating brush 6, the pulley 9 slides in the opposite direction to the rotating brush 6, and the tapered connection is released.
Only the pulley 9 now rotates idly.

In the above configuration, during normal use, the suction tool main body 4
The suction device main body 4 is pressed against the floor surface by its own weight and the suction force of the vacuum cleaner 1, and this force causes the end 15 of the clutch rod 10 to rise to the same level as the back plate 12, and the rotating brush 6 rotates. Now, if the suction tool main body 4 is lifted from the floor and the rotating brush 6 is exposed to the user, the weight of the suction tool main body 4 will not be applied to the clutch rod 10, so the biasing force of the coil spring 12 will cause the clutch rod 10 to The end 15 of is the back plate 13
exposed through the opening 14 of and at the same time the opposite end 1
6 is pushed between the pulley 9 and the rotating brush 6, the pulley 9 rotates idly, and the rotating brush 6 stops.

Effects of the Invention According to the present invention, the rotating brush does not rotate except during normal use when the bottom part of the suction device is pressed against the floor surface, so even if the rotating brush is exposed to the user side, it will not be damaged. There is no danger of this, and accidents caused by user carelessness can be prevented. Furthermore, since the rotating brush stops even when stepping over a step on the floor, it is possible to prevent scratches caused by the rotating brush on the step on the floor, which is highly effective.

[Brief explanation of the drawing]

Figure 1 is an overall perspective view of a vacuum cleaner and electric floor suction tool, Figure 2 is a view from the bottom plate with the back plate of the suction tool removed, and Figure 3 is a vertical cross-sectional view of the suction tool. ,
FIG. 4 is a partial sectional view of the rotating brush section. 4...Suction tool body, 5...Electric motor, 6...Rotating brush, 7...Belt, 9...Pulley, 10...
...Clutch stick.

Claims (1)

[Claims] 1. An electric motor, a rotating brush, and a pulley that is slidable in the axial direction on the shaft of the rotating brush, is integrated with the rotating brush when sliding in one direction, and is substantially separated when sliding in the other direction; A belt for transmitting the rotation of the electric motor to a pulley, a clutch rod for axially sliding the pulley, and means for biasing the clutch rod for displacing the clutch rod in a direction that substantially separates the pulley from the rotating brush. An electric floor suction tool, comprising: a clutch rod that partially protrudes from the bottom plate of the suction tool body in an energized state.