JPS60212136A - Electric 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 the Invention The present invention relates to a vacuum cleaner equipped with a rotating brush for removing dust attached to a surface to be cleaned.

2. Description of the Related Art Conventional Structure and Problems There has been known a vacuum cleaner equipped with a rotating brush that separates dust attached to a surface to be cleaned from the surface to be cleaned.

Its configuration will be explained with reference to FIGS. 1 and 2.

In the figure, 1 is a vacuum cleaner main body, and an electric blower 2 is installed inside the vacuum cleaner main body 1.

Reference numeral 3 designates a floor nozzle, inside which a rotary brush 4 is rotatably supported by a bearing 6, and is rotated by a rotary brush electric motor 6 and a bell 7.

Dust separated from the surface to be cleaned by the rotating brush 4 is sucked into a dust collection chamber 11 configured below a filter 10 through a suction port 8 and a suction passage 9.

Reference numeral 12 denotes a clutch lever that stops the rotation of the rotating brush 4 when the surface to be cleaned does not require the rotating brush 4, such as a floor or a tatami mat.

However, in the above configuration, since there are two electric motors, one for the electric blower and one for the rotating brush, the weight becomes heavy and the cost increases. Another drawback is that the floor nozzle becomes large because it accommodates the electric motor for the rotating brush.

To solve this problem, we are considering using a power transmission shaft made of flexible wire to transmit the rotational force of the electric blower to the rotating brushes, eliminating the need for an electric motor for the rotating brushes. In order to make the power transmission shaft as short as possible and to improve assembly workability, when the power transmission shaft is arranged in a straight line, the inner wire of the flexible wire that makes up the power transmission shaft is not necessarily straight, so when rotating, the inner wire The imaging of the inner surface of the wire affected other parts as well, increasing the vibration noise of the entire vacuum cleaner, which was a problem for practical use.

Purpose of the Invention The present invention solves the problems of conventional vacuum cleaners using two electric motors by transmitting the rotational force of an electric blower to a rotating brush via a power transmission shaft and by considering the arrangement of the power transmission shaft. Moreover, the present invention provides a quiet vacuum cleaner by reducing vibrations from the power transmission shaft.

Structure of the Invention To achieve this object, the vacuum cleaner of the present invention comprises an electric blower and a power transmission shaft made of a flexible wire for transmitting power from the electric blower to a rotating brush. With this configuration, the electric blower can transmit power to the rotating brush through the power transmission shaft while the electric blower is housed inside the vacuum cleaner body, eliminating the need for an electric motor for the rotating brush, reducing weight and cost. It is possible to downsize the device.

In addition, the power transmission shaft is arranged with a curve as a whole,
The inner wire of the flexible wire is kept in constant contact with the outer wire to prevent the inner wire from vibrating, enabling quiet operation.

DESCRIPTION OF THE EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.

In FIGS. 3 to 6, 13 is a vacuum cleaner main body, and 14 is a floor nozzle rotatably attached to the vacuum cleaner main body 13.

An electric blower 16 is installed vertically on the inside upper part of the vacuum cleaner body 13, and a first shaft 17 is supported by a first bearing 18 in parallel with the electric blower shaft 16.A drive pulley is attached to the first shaft 17. 19 and an idle pulley 20 are attached to constitute a clutch mechanism.

These clutch mechanism components are supported by a mounting plate 211F- and fixed to the electric blower 16 with screws 22.

Further, this entire body is supported by the cleaner main body 13 via a front vibration isolator 23 and a rear vibration isolator 24.

A motor belt 25 is selectively applied to the electric blower shaft 16, the drive pulley 19, and the idling pulley 20 by a switching lever 26 and a switching shaft 27.

One end of the first shaft 17 is made of flexible wire.

It is connected to a power transmission shaft 28, and this power transmission shaft 28
passes through the interior of the vacuum cleaner body 13 and is connected to an intermediate shaft 29 inside the floor nozzle 14. A rotary brush 30 is rotatably mounted on the intermediate shaft 29 parallel to the intermediate shaft 29, and is connected to the intermediate shaft 29. A rotating brush belt 32 is passed between a rotating brush pulley 31 and a rotating brush belt 32.

The cleaner body 13 and the floor nozzle 14 are rotatably connected through a connecting pipe 33. Further, a dust collection chamber 36 having a filter 34 installed therein is configured in the lower part of the cleaner body 13. 36 is an outer wire of a flexible wire that constitutes the power transmission shaft 28, and 37 is an inner wire. The entire power transmission shaft 28 is arranged in a curved line, and the inner wire 37 is always in contact with the inner surface of the outer wire 36. That is, the inner wire 37 is arranged in advance so as to be in contact with the inner surface of the outer wire 36, and when the inner wire 37 rotates, it rotates as it is, and the outer wire 36
It is something that eliminates the intense impact on one's inner self.

The operation of the vacuum cleaner configured as described above will be explained below.

The output of the electric blower 16 installed inside the vacuum cleaner body 13 is
The power is transmitted from the first shaft 17 to the power transmission shaft 28 via the electric blower shaft 16, the motor belt 26, and the drive pulley 19. The rotational force transmitted to the power transmission shaft 28 is transmitted from the intermediate shaft 29 inside the floor nozzle 14 to the rotary brush 30 via the rotary brush belt 32 and the rotary brush boo 9-31, thereby rotating the rotary brush 3o.

The dust separated from the surface to be cleaned by the rotating brush 30 is
Dust collection chamber 36 below filter 34 through connecting pipe 33
It accumulates.

In addition, in the case of a surface to be cleaned that does not require the rotating brush 30, by switching the switching lever 26 on the top of the cleaner body 13, the switching shaft 27 pushes down the motor belt 26 and replaces the rotating brush 3o with the idling boob IJ-20.
can be stopped.

In addition, since the entire power transmission shaft 28 is arranged in a curved manner so that the inner wire 37 is always in contact with the outer wire 36 within the power transmission shaft 28, the inner wire 37 is brought into contact with the inner surface of the outer wire 36 by rotation. Vibration is prevented without being hit hard.

As described above, according to this embodiment, by transmitting power from the electric blower 16 to the rotating brush 30 using the power transmission shaft 28, the P1 electric blower 16 is placed vertically and the vacuum cleaner main body 13 is made thin. The passage from the suction port to the dust collection chamber 36 is shortened to reduce pressure loss in the suction passage. Further, since the rotating brush 30 can be driven by the electric blower 16, an electric motor for driving the rotating brush is not required, and weight and cost can be reduced, and the floor nozzle can be made smaller.

Further, the power transmission shaft 28 is arranged so that the whole is curved, and the inner wire 37 is always connected to the outer wire 36.
This prevents vibration noise caused by the inner wire 37 contacting the inner surface of the outer wire 36.

Effects of the Invention As described above, the vacuum cleaner of the present invention transmits power from the electric blower inside the vacuum cleaner body to the rotating brush in the floor nozzle using a power transmission shaft made of a flexible wire.
Since the structure can be configured with a single electric motor, the weight and cost can be reduced, and the floor nozzle can also be made smaller. In addition, the entire power transmission shaft is arranged in a curved line so that the inner wire is always in contact with the outer wire, which prevents vibration noise caused by the inner wire hitting the inner surface of the outer wire due to rotation, resulting in a quieter sound. This provides an easy-to-use vacuum cleaner.

[Brief explanation of the drawing]

Fig. 1 is an external perspective view of a conventional vacuum cleaner, Fig. 2 is a sectional view of the vacuum cleaner, Fig. 3 is an external perspective view of a vacuum cleaner showing an embodiment of the present invention, and Fig. 4 is an external perspective view of a conventional vacuum cleaner. FIG. 5 is a longitudinal ## side view of the same, and FIG. 6 is an enlarged sectional view of the power transmission shaft. 13... Vacuum cleaner body, 14... Floor nozzle,
15... Electric blower, 28... Power transmission shaft, 30. River... Rotating brush, 36... Outer wire, 37. ...Inner wire 0 Figure 1 Figure 2 Figure 3 Figure 5

Claims (1)

[Claims] A vacuum cleaner body with a built-in electric blower, a floor nozzle with a built-in rotating brush rotatably attached to the vacuum cleaner body, and a power transmission shaft made of a flexible wire that transmits the rotational force of the electric blower to the rotating brush. In the vacuum cleaner, the power transmission shaft is arranged so as to have a curve as a whole, and an inner wire of a flexible wire constituting the power transmission shaft is brought into contact with an outer wire.