JPH0131889B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a rotating brush device for a vacuum cleaner used for scraping up dust from a surface to be cleaned.

BACKGROUND ART Conventionally, both ends of a rotating brush have been supported by a vacuum cleaner body or the like via bearings. Since the rotating brush has the function of scooping up dust, the following measures have been taken to prevent dust from entering the bearing.

That is, one of them is to provide a partition wall at the end of the rotating brush to block dust from entering the bearing.
The other method was to elastically contact the dust-tight packing on the outer periphery of the rotating brush end.

Problems to be Solved by the Invention However, in the former configuration, it is necessary to provide a gap between the outer periphery and the partition wall due to the rotation of the rotating brush, and as a result, dust can enter the bearing through this gap. Resulting in. In addition, in the latter type, since the rotating brush rotates at high speed, the durability of the packing is poor, making it difficult to put it into practical use in terms of longevity.

The present invention solves these conventional problems and reliably prevents dust from entering the rotating brush bearing, thereby improving its rotation.

Means for Solving the Problems In order to solve the above-mentioned conventional problems, the present invention has the following features:
A rotating brush that rotates in conjunction with a drive source, a bearing that supports a shaft protruding to both ends of the rotating brush, and a bearing that supports this bearing and has a flange formed on the outer periphery that covers the outer periphery of the end of the rotating brush. A plurality of air blowing blades are arranged on the outer periphery of the end of the rotating brush covered by the flange of the bearing support, and the air blowing direction is set toward the center of the rotating brush. A vent is formed into the blade.

Effects According to the present invention, as the rotating brush rotates, the blades induce wind in the opposite direction to the bearing, and this wind prevents dust from entering the bearing. In addition, the bearing support flange efficiently attracts and flows wind, further increasing the effect of preventing dust from entering the bearing.

Example Examples thereof will be described below with reference to the accompanying drawings.

In the figure, reference numeral 1 denotes the main body of the vacuum cleaner, which includes an electric blower 2, a rotating brush 4 that sweeps up dust from the floor into a suction port 3, and a dust box 5 that collects dust.

The main body 1 is composed of an upper main body 6 and a lower main body 7,
A handle 8 for operating the main body is pivotally attached to the back surface of the main body so as to be freely tiltable. The dust box 5 has a filter 9 therein for collecting dust, and is detachably attached to the main body 1 between the electric blower 2 and the rotating brush 4.

The rotating brush 4 is connected to an electric blower 2 which is a driving source.
Rotation is transmitted by a belt 12 that is constructed between the pulley 10 of the rotary brush 4 and a pulley 11 installed at one end of the rotary brush 4, and the brush 4 rotates.

The rotating brush 4 rotates around a shaft 13 protruding from both ends thereof, and a bearing 14 that rotatably supports the shaft 13 is supported by a bearing device 15.

The bearing device 15 is disposed at both ends of the rotating brush 4, and the bearing 14 is held by combining a bearing support A16 and a bearing support B17, and is caulked with a rivet 18. Reference numeral 19 denotes an interference rubber attached to the outer periphery of the bearing support A16, which prevents vibrations caused by the rotation of the rotating brush 4 from being transmitted to the main body 1.

A flange 1 is provided on the outer periphery of the bearing support B17.
7' is provided, and this flange 17' covers a plurality of blades 20 each twisted by a certain amount around the outer periphery of the end of the rotating brush 4, and serves as a guide for the air to flow, and also to prevent the blades 20 from threads, cotton dust, etc. prevents it from getting wrapped around.

19' is an air intake provided in the interference rubber 19;
Reference numeral 1 denotes a vent hole provided through the joint of the bearing support A 16 and the bearing support B 17, and when the rotating brush 4 rotates as shown by the arrow in FIG. As shown in FIG.
The water flows toward the center of the rotating brush 4 through the gap between the blade 7' and the blade 20 provided at the end of the rotating brush 4.

Further, such air flow is further increased by the suction of the electric blower, and it is almost impossible for dust to enter the bearing portion, which is very effective.

In the above embodiment, a plurality of twisted blades are used, but any appropriate ribs or protrusions may be used.

Effects of the Invention As described above, according to the structure of the present invention, it is possible to reliably prevent dust from entering the bearing part, eliminate the problem that the rotation of the rotating brush is obstructed and cleaning cannot be done, and the bearing part is constantly kept air free. The flow creates a cooling effect on the bearing, increasing its lifespan. Furthermore, the bearing support cover also effectively protects the blades from foreign objects.

[Brief explanation of drawings]

Fig. 1 is an external perspective view of a vacuum cleaner showing an embodiment of the present invention, Fig. 2 is a sectional view, Fig. 3 is a sectional view of a rotating brush device, and Figs. 4 and 5 are plan views of the same rotating brush. and a side view. 4... Rotating brush, 14... Bearing, 17... Bearing support, 20... Vane.

Claims (1)

[Claims] 1. A rotating brush that is rotated in conjunction with a driving source;
The rotary brush includes a bearing that supports a shaft protruding to both ends, and a bearing support that supports the bearing and has a flange formed on the outer periphery that covers the outer periphery of the end of the rotating brush, and is covered by the flange of the bearing support. A plurality of air blowing blades are arranged on the outer periphery of the end of the rotary brush with the air blowing direction set toward the center of the rotating brush, and a ventilation hole to the blades is formed in the bearing support. brush device.