JPS6021726A - vacuum cleaner - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a vacuum cleaner having a rotating brush built into a floor nozzle.

Structure of the conventional example and its problems FIGS. 1 and 2 show a rotating brush in a conventional vacuum cleaner of this type. That is, the rotating brush is installed inside the floor nozzle body 1. 2 is a rotating brush outer frame, and a brush body 4 having brush bristles 3 implanted therein is inserted into a groove 5 thereof. A pulley 6 receives rotational force from a drive source such as a motor, and is fixed to the rotating brush outer frame 2 with screws 7. 8 is a bearing that rotatably receives the rotating brush shaft 9. A groove 10 is formed in the brush body 4 to be inserted into the groove 5 of the rotary brush outer frame 2 for the purpose of preventing the brush body from coming off.

Incidentally, the rotating brush is used to scrape off dirt on the carpet, and therefore, dirt that is thinner than the gap between the plan f*4 and the groove 5 enters the rotating brush and also adheres to the bear link 8 portion. Therefore, even the bearing 8, which rotates smoothly due to the oil, loses its smoothness due to conditions such as adhesion of dirt, entry of dirt into the rolling portion, and high speed rotation.

Eventually it would lock up.

OBJECTS OF THE INVENTION The present invention eliminates these conventional drawbacks and aims to improve the rotational life of the rotating brush.

Structure of the Invention The present invention has a pulley that holds the bearing of a rotating brush, and has a rib formed on the inner surface of the pulley, and the rib creates an air flow in the direction opposite to the direction of the bearing. .

Description of examples Examples thereof will be described below with reference to the accompanying drawings.

3 to 5 show an example of the implementation in an applied type vacuum cleaner, that is, 11 is a floor nozzle with a built-in rotating brush 12, and 13 is a liquid flowing from the floor nozzle 11 in conjunction with the suction operation of the fan motor 14. This is a hose that guides dust air to the dust collecting section 15 of the main body 20 of the vacuum cleaner. Note that the dust-containing air that has reached the dust collecting section 16 is filtered by the paper bag 16, and only clean air is passed through the fan motor 14 and discharged from a predetermined exhaust port.

17 is a moving roller, 18 is a rotating shaft of the fan motor 14, and 19 is a nondle.

By the way, the aforementioned rotating brush 12 has the following configuration. First, there are grooves 22 in the cylindrical rotating brush outer frame 21.
is formed in the thrust direction, and a groove 25 of a brush body 24 having brush bristles 23 implanted therein is inserted into the groove 22 thereof. A pulley 26 is inserted into the inner circumferential surface of the p1 rotating brush outer frame 21, and a protrusion 27 protruding from one side of the pulley is fitted into the groove 22 of the rotating brush outer frame 21 to remove the outer rotating brush. The frame 21 is prevented from rotating. Furthermore, a bearing 28 is inserted into the pulley 26 and holds the rotating brush 12 and a shaft 29. A spacer 3o is inserted between the support 31 of the rotating brush shaft 29 and the bearing 28, and prevents rattling of each component in the thrust direction.

32 is a belt, pulley 26 and fan motor 1
It is stretched between the rotary shaft 20 of No. 4.

Reference numeral 33 denotes a retaining plate that maintains the roundness of the rotating brush outer frame 21, and is spot welded to the inner surface of the rotating brush outer frame 21. Numeral 34 is a large number of ribs formed on the pulley 26.

In the above configuration, the pulley 26
When a rotational force is applied to the rib body 3 formed on the pulley 26
4, an air current is generated in a direction away from the bearing 28.

Effects of the Invention As is clear from the embodiments described above, according to the present invention, when the pulley rotates, dirt that has entered the bearing held inside the pulley is removed through the airflow generated by the rib body. To invert.

This prevents dirt from entering the bearing and prevents the rotational life from being shortened due to dirt entering.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view of a conventional rotating brush, Fig. 2 is a front sectional view thereof, Fig. 3 is a sectional view of a vacuum cleaner showing an embodiment of the present invention, and Fig. 4 is a side sectional view of the rotating brush. , FIG. 6 is a front sectional view taken along line AA in FIG. 4. 11... Floor nozzle, 12... Rotating brush, 14... Fan motor, 21...
・Rotating brush outer frame, 23...Brush bristles, 24.
...Brush body, 26...Pulley, 34
・・・・・・Ribbed body. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 3

Claims (1)

[Claims] The main body of the vacuum cleaner has a 7-inch motor inside, and the floor nozzle is connected to the suction side of the main body of the vacuum cleaner and has a built-in rotating brush. A vacuum cleaner comprising a supported brush body with brush bristles and a pulley, and a lip body formed on the inner surface of the pulley.