JPH05228073A - Upright type vacuum cleaner - Google Patents

Abstract

PURPOSE:To prevent degrading of sensitivity of a magnetic detector due to wearing by making a rotary brush at a suction port rotate after a main body part is inclined until a magnetic detection means disposed on the main body part of an upright type electric cleaner fails to detect magnetism of a magnet provided at a floor suction port. CONSTITUTION:The main body 51 of an upright type vacuum cleaner is pivoted centered on a rotating shaft 50 of a suction port 52 for floor free to rotate. The suction port 52 for floor has a rotary brush which rotates on a floor to clean up and a magnet 2 for detecting an angle of inclination. The cleaner main body 51 has a magnetic detection means 1 which checks magnetism of the magnet 2 to detect the angle of inclination and makes the rotary brush at the suction port 52 rotate with a controller after it is inclined to a specified angle, at which the detection of magnetism of the magnet 2 fails. This enables non-contact detection of an attitude to prevent deterioration in the magnetic detection means due to wearing thereby achieving a longer life.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an upright type vacuum cleaner having a floor suction tool provided with a rotating brush.

[0002]

2. Description of the Related Art In recent years, as vacuum cleaners have diversified to be cleaned such as rugs, a vacuum cleaner has a rotary brush at the floor suction port, which is rotated by a motor. Is coming.

In an upright type vacuum cleaner,
Since the main body of the vacuum cleaner is used in a state in which it falls down to some extent, there is a thing that can rotate the rotating brush of the floor suction port only when it falls down, to prevent abrasion of the floor surface and brush and to save power. It has an effect.

A conventional upright type vacuum cleaner will be described below with reference to the drawings. The upright type vacuum cleaner shown in FIG. 4 has a structure in which the cleaner main body 51 rotates with respect to the floor suction port 52 with a line indicated by 50 as an axis.

Therefore, the user grasps the handle 53 and tilts the cleaner body 51 to some extent to use it.

When not in use, the cleaner body 51 is upright. In order to detect these states, a cam 56 is provided on the rotary shaft 50, and by the cam 56,
The switch 57 is opened and closed (see FIG. 5).

In the circuit diagram of FIG. 6, the switch 57 is connected in series with the AC power source 64 together with the rotary brush motor 58, the motor protection device 59, and the bidirectional thyristor 60.

When the cleaner main body 51 is in a tilted state (the switch 57 is closed), the rotary brush motor 58 is operated by the user by the bidirectional thyristor 60. It is controlled by a signal from the control device 61.

[0009]

However, in the above-mentioned conventional technique, since the power source of the rotary brush motor 58 is directly opened and closed by the switch 57, the cam 56 and the switch 57 are in contact with each other and slide. Therefore, it may be worn out for a long period of time, and it may become impossible to open or close the switch.

Further, when the cleaner main body is upright, the rotary brush does not rotate. For example, at this time, when the two-way thyristor 60 is in the energized state and the cleaner main body falls down, the user unconsciously recognizes it. The rotating brush will rotate.

The present invention solves the above problems,
Improves durability and operability by controlling the rotation of the rotating brush by detecting the tilt angle of the vacuum cleaner body with a magnet and magnetic detection unit, and rotating the rotating brush only when the operating switch is operated. The purpose is to let.

[0012]

In order to achieve the above object, the upright type electric vacuum cleaner of the present invention has the following means.

1. A predetermined angle formed by the cleaner body and the floor suction port is detected by using a magnet and a magnetism detecting means.

2. The main body of the cleaner and the suction port for the floor form a predetermined angle, and a controller is provided for rotating the rotary brush when the switch of the operating section is operated.

[0015]

In this structure, since the predetermined angle between the main body of the cleaner and the suction port is detected in a non-contact manner, there is no deterioration in detection accuracy due to wear even during long-term use.
The durability is improved.

Further, since the main body of the vacuum cleaner and the suction port for the floor form a predetermined angle and the rotary brush is rotated only when the switch is operated by the user, Operability is improved.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In this embodiment, a reed switch that is closed in a magnetic field will be used as the magnetic detection means.

An embodiment of the first invention will be described with reference to the drawings. Hereafter, the same symbols are attached to those having the same functions as those of the conventional technology, and the description thereof is omitted.

In FIG. 1, the cleaner body 51 and the floor suction port 52 rotate about a rotation shaft 50.

When the vacuum cleaner body 51 is upright,
The magnetism detecting means 1 and the magnet 2 are arranged at positions close to each other as shown in FIG.

The magnetism detecting means 1 is a cleaner body 51.
In addition, the magnet 2 is provided in the floor suction port 52, and when the cleaner body 51 is rotated and tilted about the axis 50, the magnetism detecting means 1 and the magnet 2 are separated from each other as shown in FIG. Distribute.

With this configuration, when the cleaner body 51 is standing upright on a normal floor, the magnetism detecting means 1 is operated by the magnet 2
Detects the magnetism generated and closes the switch. Then, when the cleaner main body 51 is tilted to a predetermined angle at which the magnetism detecting means 1 cannot detect the magnetism from the magnet 2, the switch is opened.

In this way, it is possible to detect the fall of the cleaner body 51. In FIG. 2 of the present embodiment, the control device 3 recognizes whether the magnetic detection means 1 (switch) is opened or closed.

With this structure, the rotary brush motor 58 is
When the magnetic detection means 1 is closed, the operation switch 54
No signal is sent to the bidirectional thyristor 60. Therefore, the rotary brush can rotate only when the cleaner body 51 is tilted at a predetermined angle.

The control device 3 can be easily realized by a microcomputer and its peripheral circuits.

In this embodiment, the reed switch is used as the magnetic detecting means, but it can be realized by using other magnetic detecting means such as a Hall element.

Next, an embodiment of the second invention will be described with reference to the drawings. FIG. 3 is a flowchart showing an embodiment of the present invention. In addition, this flowchart is
A part of the control of the rotating brush motor 58,
A detailed portion and a flow chart relating to other controls such as the fan motor 62 are omitted.

According to FIG. 3, in order to rotate the rotating brush from the stopped state, first, the main body is tilted by a predetermined angle or more, and the operation (rotation) for rotating the rotating brush is performed by the operation switch. The motor will rotate when you press the switch for the brush). When the cleaner main body 51 stands upright while the rotating brush is rotating, the rotating brush stops. If the cleaner main body 51 is tilted again from this state, the rotary brush does not rotate, but it rotates by operating the operation switch.

[0029]

As is apparent from the above description of the embodiments, the present invention uses a magnet and a magnetism detecting means in a non-contact manner to form a predetermined angle between the cleaner body and the floor suction port. Can be used without losing detection accuracy due to wear due to long-term use, and only when the main body of the vacuum cleaner and the floor suction port form a predetermined angle and the operation switch is operated. Since the rotary brush is configured to rotate, it is possible to provide an upright type electric vacuum cleaner having a good operability suitable for actual operation.

[Brief description of drawings]

FIG. 1 is an external view of an upright electric vacuum cleaner according to an embodiment of the first invention.

FIG. 2 is an electric circuit diagram of the embodiment.

FIG. 3 is a control flowchart of the rotating brush of the upright type vacuum cleaner according to the embodiment of the second invention.

FIG. 4 is an external view of a conventional upright electric vacuum cleaner.

FIG. 5 is a configuration diagram of a rotating portion of a conventional upright electric vacuum cleaner.

FIG. 6 is an electric circuit diagram of a conventional upright type electric vacuum cleaner.

[Explanation of symbols]

 55 Hose 62 Fan motor 63 Bidirectional thyristor for fan motor

Front page continued (72) Inventor Mitsuhide Sugibayashi 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Seiji Yamaguchi, 1006 Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd. (72) Inventor Norihito Mochida 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (2)

[Claims] 1. A floor suction port provided with a cleaner body and a rotating brush is configured to rotate, and the floor suction is provided only when the vacuum cleaner body and the floor suction port form a predetermined angle. It is possible to rotate the rotating brush of the suction port,
An upright type electric vacuum cleaner having a sensor as a means for detecting a predetermined angle, the sensor comprising a magnet and a magnetism detecting means from the magnet. 2. A control device for rotating the rotary brush when the vacuum cleaner body and the floor suction opening form a predetermined angle and the switch of the operating portion is operated. Item 1. The upright electric vacuum cleaner according to Item 1.