JPS60108023A - 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 Structures and Problems There have been conventionally known vacuum cleaners that are equipped with a rotating brush that separates dust attached to a surface to be cleaned from the surface to be cleaned.

The structure will be explained based on FIG. 1. In the figure, 1 is a vacuum cleaner main body, and an electric blower 2 is installed therein.

3 is a floor nozzle, inside which a rotating brush 4 is mounted on a bearing 6.
This is rotatably driven by a rotary brush electric motor 6 and a belt 7. The 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.

By the way, in the above configuration, since there are two electric motors, the electric blower 2 and the rotating brush electric motor 6, the weight is heavy and the cost is also high. Moreover, since the rotary brush electric motor 6 is housed, the floor nozzle 3 has a disadvantage that it becomes large.

Furthermore, vacuum cleaners are also used in which an electric blower is installed at the bottom of the vacuum cleaner body and the rotating brush is driven by the electric blower. Therefore, it is necessary to connect the suction port to the dust collection chamber with a hose and draw air from the top to the bottom, which means that the suction passage is longer and the pressure loss is large. Ta.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned drawbacks, and uses one electric motor to
By driving the blower and rotating brushes, it reduces weight and cost, shortens the distance of the suction passage and reduces performance loss, and also ensures that power is transmitted from the electric motor to the rotating brushes. The company provides vacuum cleaners.

In order to achieve the structure and object of the invention, the vacuum cleaner of the present invention includes a power transmission shaft on the main body side and the floor nozzle side that transmits the rotational force of the electric blower in the vacuum cleaner main body to the rotating brush, and a vacuum cleaner main body and a power transmission shaft on the floor nozzle side. From the power direction conversion device that changes the direction of power between the power transmission shafts between the floor nozzles, the center of the power transmission shaft on the floor nozzle side connected to this power direction conversion device and the rotation between the floor nozzle and the vacuum cleaner body. The structure is aligned with the center of motion.

With this configuration, while the electric blower is installed vertically in the upper part of the vacuum cleaner body, power can be transmitted from the electric blower to the rotating brush via the power transmission shaft and the power direction conversion device, so that the electric motor for the rotating brush can be This eliminates the need for a floor nozzle, which reduces weight and cost, shortens the suction distance, and reduces the size of the vacuum cleaner body.In addition, the floor nozzle is connected to the rotation center of the vacuum cleaner body and the power direction conversion device. Since the centers of the side power transmission shafts are aligned, the power transmission shaft on the main body side rotates in the same manner as the vacuum cleaner main body rotates, and the power transmission shaft does not twist or bend.

Furthermore, compared to the case where a flexible wire is used for the power transmission shaft and no power direction conversion device is used, the influence of shaft torsion is small, so the life is extended.

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

In Figures 2 and 3, 12 is the vacuum cleaner body;
3 is a floor nozzle 0 An electric blower 14 is installed vertically in the upper part of the vacuum cleaner main body 12, and a main body side power transmission shaft 16 such as a flexible wire is supported by a bearing 17 parallel to the electric blower shaft 16. There is. Pulley 18 attached to electric blower shaft 16
and a pulley 19 attached to the power transmission shaft 16 on the main body side.
A motor belt 20 is passed between the two.

The main body side power transmission shaft 16 passes through the inside of the cleaner main body 12 and is connected to a worm gear 22 at one end of a power direction conversion device 21 inside the floor nozzle 13 .

Here, the direction of the power is changed by approximately 90 degrees, and the power transmission shaft 25 is connected via a worm wheel 23 to a floor nozzle side power transmission shaft 25 which is supported by an intermediate bearing 24 .

A rotating brush 26 is rotatably mounted parallel to the floor nozzle-side power transmission shaft 25, and a rotating brush belt 29 is stretched between the intermediate pulley 27 and the rotating brush pulley 28. The cleaner main body 12 and the floor nozzle 13 are rotatably connected through a connecting pipe 3o, and the center of rotation between the cleaner body 12 and the floor nozzle 13 is aligned with the center of the floor nozzle side power transmission shaft 26.

Further, a filter 31 is provided inside the cleaner body 12, and a dust collection chamber 32 is configured below the filter 31.

Next, the operation of the vacuum cleaner configured as described above will be explained.

The output of the electric blower 14 installed inside the vacuum cleaner body 12 is transmitted from the electric blower shaft 16 to the pulley 18 and the motor belt 2o.
The power is transmitted to the main body side power transmission shaft 16 via the pulley 19.

The rotational force transmitted to the main body side power transmission shaft 16 is transmitted through the power direction conversion device 21 inside the floor nozzle 13 to the floor nozzle side power transmission shaft 26, the intermediate pulley 27, the rotating brush belt 29, and the rotating brush pulley 28. and is transmitted to the final rotating brush 26.

The dust separated from the surface to be cleaned by the rotating brush 26 is
A dust collection chamber 32 is provided below the filter 31 through the connecting pipe 30.
The vehicle will be collected.

Moreover, even if the vacuum cleaner body 12 is rotated in the direction of the arrow in FIG. 3, the rotation center of the vacuum cleaner body 12 and the floor nozzle side power transmission shaft
5 are made to coincide with each other, as the vacuum cleaner main body 12 rotates, the power transmission shaft 16 on the main body side also rotates with the power direction conversion device 21.
The worm gear 22 and the worm wheel 23 can be rotated and freely moved around the floor nozzle side power transmission shaft 26 through the worm gear 22 and the worm wheel 23 will not come out of engagement.

As described above, according to this embodiment, the main body side power transmission shaft 16 such as a flexible wire is connected to the floor nozzle side power transmission shaft 26 via the power direction conversion device 21, and the floor nozzle side power transmission shaft 25 is connected to the main body side power transmission shaft 16 such as a flexible wire. Center the floor nozzle 13 and the vacuum cleaner body 1
By aligning the rotation center of 2, the vacuum cleaner body 12
Power can be transmitted to the rotating brush 26 from the electric blower 14 installed vertically in the upper part of the screen, eliminating the need for an electric motor for driving the rotating brush, shortening the distance from the suction port to the dust collection chamber 32, and reducing loss. In addition to reducing weight and cost, even when the vacuum cleaner body is rotated up and down, the power transmission shaft 16 on the main body side can freely rotate around the power transmission shaft 26 on the floor nozzle side via the power direction conversion device 21. Since they can move, no unreasonable force is applied to the power transmission shafts 16, 25, and their durability is improved, compared to when the power transmission shafts are made of only flexible wires.

Although a worm is used as the power direction conversion device in this embodiment, it may be a bevel gear or the like.

Effects of the Invention As described above, the vacuum cleaner of the present invention transmits power from the electric blower to the rotating brush using the power transmission shafts on the main body side and the floor nozzle side, as well as the power direction conversion device. By aligning the centers of rotation of the vacuum cleaner body and the floor nozzle, the electric blower can be placed vertically, the vacuum cleaner body can be made thinner, and the suction passage can be shortened to reduce loss. Furthermore, since the rotating brush can be driven by an electric blower, an electric motor for driving the rotating brush is not required, reducing weight and cost. Furthermore, even if the vacuum cleaner body is rotated, the power is transmitted through the power direction conversion device and the center of the floor nozzle power transmission shaft is aligned with the rotation center of the vacuum cleaner body and floor nozzle. This can be done reliably, does not put strain on the power transmission shaft, and improves durability.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a conventional vacuum cleaner, FIG. 2 is a front sectional view of the vacuum cleaner showing an embodiment of the present invention, and FIG. 3 is a side sectional view of the vacuum cleaner. 12... Vacuum cleaner body, 13. River... Floor nozzle,
14... Electric blower, 16... Body side power transmission shaft, 21... Power direction conversion device, 25
...... Floor nozzle side power transmission shaft, 26...
rotating brush. Name of agent: Patent attorney Toshio Nakao and 1 other WJ
Figure 1 No. 21g

Claims (1)

[Claims] A vacuum cleaner body with a built-in electric blower, a floor nozzle that is rotatably attached to the vacuum cleaner body and has a built-in rotating brush, and a main body side and a floor nozzle side that transmit the rotational force of the electric blower to the rotating brush. It is equipped with a power transmission shaft and a power direction conversion device provided between these power transmission shafts, and the center of the floor nozzle side power transmission shaft connected to the power direction conversion device is the rotation center of the floor nozzle and the vacuum cleaner body. A vacuum cleaner installed to match the .