JPS6085721A - 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 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 with bearings 5 and 6.
It is rotatably mounted on a shaft and rotated 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 removed from the suction port 8.
The dust passes through the suction passage 9 and is sucked into the dust collection chamber 11 configured below the filter 10.

However, in the above configuration, since there are two electric motors, an electric blower and a rotating brush motor, 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.

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. However, since the electric blower is placed horizontally, the width of the main body is large.

OBJECTS OF THE INVENTION In view of the above-mentioned drawbacks, the present invention provides a vacuum cleaner that can drive the air blower and rotating brush with a single electric motor, reduce weight and cost, shorten the suction distance, and reduce loss. It is something.

Structure of the Invention In order to achieve this object, the vacuum cleaner of the present invention transmits power from an electric blower to a rotating brush using a power transmission shaft such as a flexible wire. A mechanism is provided on one or both of the sides to interrupt transmission when the transmission torque exceeds a predetermined value.

With this configuration, power can be transmitted from the electric blower installed vertically on the top of the vacuum cleaner body to the rotating brush, eliminating the need for an electric motor for the rotating brush, shortening the suction distance and reducing suction loss. In addition to reducing weight and cost, the main body is also paper-shaped.

Furthermore, when a large torque is applied to the rotating brush, rotation transmission is interrupted and stopped, which prevents the power transmission shaft from breaking and the electric blower from generating heat.

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.

An electric blower 14 is installed vertically in the upper part of the vacuum cleaner body 12, and a first shaft 16 is connected to a first bearing 17 parallel to the electric blower shaft 15.
It is pivoted by. A first belt 2o is passed around an electric blower pulley 18 attached to an electric blower shaft 15 and a first shaft pulley 19 attached to a first shaft 16.

A power transmission shaft 21 such as flexible wire is attached to one end of the first shaft 16.
passes through the interior of the cleaner body 12 and is connected to a second shaft 23 provided parallel to a rotary brush 22 rotatably mounted inside the floor nozzle 13. The second shaft 23 is the second
A second flat belt 27 is passed around a second shaft pulley 25, which is supported by a bearing 24 and attached to a second shaft 23, and a rotating bluff pulley 26. The biaxial pulley 26 and the second flat belt 27 slip and the transmission is interrupted.

The vacuum cleaner main body 12 and the floor nozzle 13 are connected by a connecting pipe 28.
2 is connected. Further, a filter 29 is provided inside the cleaner body 12, and a dust collection chamber 30 is configured below the filter 29.

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

The output of the electric blower 14 is transmitted from the electric blower shaft 15 to the electric blower pulley 18 , the first bell) 20 , and the first shaft pulley 19 from the first shaft 16 to the power transmission shaft 21 . Here, the rotational speed of the electric blower 14 is reduced. The power transmitted to the power transmission shaft 21 rotates the rotary brush 22 from the second shaft 23 through the second shaft pulley 25, the second flat belt 27, and the rotary brush boot 1)-26:i. The dust separated from the surface to be cleaned by the rotating brush 22 is sucked in through the connecting pipe 28 and collected in the dust collection chamber 21 below the filter 29.

The rotating brush 220 may become tangled with the rotating brush 22, be clogged with dust, or for some other reason.
When the rotation stops and a high load is applied, the second shaft pulley 2
5 and the second flat belt 27, and the transmission of power to the rotating brush 22 is interrupted.

As described above, according to this embodiment, power is transmitted from the electric blower to the rotating brush using the power transmitting shaft 21, and the flat belt 27 is used as the power transmitting portion between the power transmitting shaft 21 and the rotating brush 22. By discontinuing the transmission when the transmission torque exceeds a predetermined torque, damage to the power transmission shaft 21 and heat generation of the electric blower can be prevented. In addition, the electric blower 14 is placed vertically to make the main body thinner, and the suction port is connected to the dust collection chamber 3.
The distance to zero can be shortened to reduce loss during coating. Further, since the rotating brush 22 can be driven by the electric blower 14, an electric motor for driving the rotating brush is not required.

In this embodiment, a mechanism for interrupting the transmission when the transmission torque exceeds a predetermined torque is provided on the rotation plan side of the power transmission shaft 21, but it may be provided on the electric blower side. In this case, when the torque transmission is interrupted, the rotation of the power transmission shaft 21 also stops, leading to an extension of the life of the power transmission shaft 21. Further, it may be provided on both the electric blower side and the rotating brush side of the power transmission shaft 21.

In addition, in this example, a mechanism was used that interrupted torque transmission due to slipping of the flat belt, but a friction wheel, a friction clutch,
A mechanism such as a torque converter may also be used.

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 a power transmission shaft, and connects the power transmission shaft to the electric blower side or the rotating brush. By installing a mechanism on one or both sides that interrupts transmission when the transmission torque exceeds a predetermined value, the electric blower is placed vertically, making the main body thinner, shortening the suction distance, and reducing loss along the way. Becomes a composition.

Since the rotary brush can be driven by a rotary electric blower, there is no need for an electric motor to drive the rotary brush, reducing weight and cost.Furthermore, if the rotary brush stops rotating, the power transmission shaft will not break. This can prevent the electric blower from generating heat.

[Brief explanation of drawings]

FIG. 1 is a front sectional view of a conventional vacuum cleaner, FIG. 2 is a side sectional view of a vacuum cleaner according to an embodiment of the present invention, and FIG. 3 is a front sectional view thereof. 12... Vacuum cleaner body, 13... Floor nozzle, 1
4... Electric blower, 21... Power transmission shaft, 22
...Rotation plan, 25...Second shaft pulley, 26
...Second flat belt. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
figure

Claims (1)

[Claims] The vacuum cleaner body includes an electric blower inside and a floor nozzle with a rotatable rotating brush inside. A vacuum cleaner that is equipped with a mechanism that interrupts transmission when a predetermined transmission torque is exceeded on one or both of the electric blower side and the rotating brush side of the transmission shaft.