JPS6364640B2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention includes a fan motor, a fan rotated by the fan motor, a motor located at the rear of the fan motor and capable of controlling forward and reverse rotation (hereinafter referred to as an oscillating motor),
This invention relates to an electric fan made up of its control circuit.

Conventional configuration and its problems Changing the wind direction of a conventional electric fan (hereinafter referred to as oscillation)
As shown in Fig. 1, the mechanism transmits the rotational output of a swing motor 102 located at the rear of a fan motor 101 to a crank 103 and a crank rod 104, and the swing angle is adjusted at the rear of the fan motor. Protruding swing angle adjustment lever 105
Since the electric fan is adjusted by the electric fan, there are problems in that the number of parts is large and assembly is troublesome, and the swing angle lever 105 is located at the rear of the electric fan, making it difficult to operate.

OBJECTS OF THE INVENTION The present invention has been made in consideration of the above-mentioned conventional drawbacks, and aims to provide an electric fan which can reduce manufacturing costs and which is easy to operate to adjust the oscillation angle.

Structure of the Invention In order to achieve the above object, the electric fan of the present invention is provided with a crank which is given rotation of the oscillating motor and causes the fan motor to oscillate through a crank rod,
This crank is equipped with an encoder for detecting the number of rotations and direction of rotation, and a photocoupler is placed opposite to the encoder for detecting the number of rotations and direction of rotation, and the output of the photocoupler and the setting output of the switch or volume are processed to operate the oscillating motor. This is the configuration of the electric fan to be controlled.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described based on FIGS. 2 to 6.

In the figure, reference numeral 1 denotes a fan motor, and a swing motor 2 that can control forward and reverse rotation is attached to the rear of the fan motor. A crank 3 is disposed below the oscillating motor 2 and has encoders 4 and 5 for detecting the number of rotations and the direction of rotation, and a crank 3 to which the rotation of the oscillating motor 2 is transmitted. Photo couplers 6 and 7 are matched. The outputs of the photocouplers 6 and 7 and the setting output of the switch 9 or volume on the fan operating surface are fed to an electronic circuit 8, which performs arithmetic processing to control the oscillating motor 2. In the figure, 10 is a fan, and 11 is a crank rod.

To explain in more detail, the crank 3 has an encoder 4 for detecting the number of rotations on which a light and dark pattern is drawn around the entire circumference as shown in FIG. The fan rotates approximately once at its maximum swing angle. Then, as shown in FIGS. 3 and 4, the rotation direction detection photo coupler 6 is placed directly above the rotation direction detection encoder 5 on the radius of X, and the rotation speed detection photo coupler 7 is placed on the rotation speed detection encoder 4. The neutral position of the head is when it is placed directly above.

Here, each photocoupler 6 and 7 detects, for example, from X to Y by rotating the encoders 4 and 5, and then turns around and detects through X to Y', and then returns to X and detects the maximum of one time. End the angle swing. The photocoupler detects the brightness of the encoders 4 and 5 and outputs a HI or LOW voltage.

Next, the operation of the control electronic circuit 8 will be explained.
Suppose that when the fan is not in the neutral position for the first time, the rotational direction detection photocoupler 6 detects, for example, a dark part of the rotational direction detection encoder 5 (detects between X and Y' in Fig. 3). ). This control electronic circuit 8 sends an output to the oscillating motor 2 so that the rotational direction detection photocoupler 6 faces X (borderline between bright and dark) of the rotational direction encoder 5, and detects when the rotational direction detection photocoupler 6 passes X. When the output is reversed, the electronic circuit 8 starts inputting the output of the rotation speed detection photocoupler 7 until the number of pulses obtained by the brightness of the rotation speed detection encoder 4 matches the value set by the rotation angle setting switch 9 or the polyurem. Rotate the swing motor 2. When the number of output pulses of the rotation speed detection photocoupler 7 matches the value set by the switch 9 or the volume, this circuit stops the oscillating motor 2.
The output to motor 1 is reversed and the above operation is repeated.

By using the above method, the present invention allows the fan to be oscillated using a switch or a volume control. Furthermore, the encoder may be magnetized instead of having a light and dark pattern, and a magnetic sensing element may be used instead of the photocoupler.

Effects of the Invention As is clear from the description of the above embodiments, according to the present invention, the swinging operation of the electric fan can be easily performed from the front of the fan without using a complicated mechanical mechanism, and the swinging angle is The electronic circuit can process values that can be set steplessly using a switch or volume control, and can be set arbitrarily as long as the angle is within the limit angle. In addition, since the arithmetic circuit for controlling the head oscillation motor can be combined with the fan motor control circuit, it is possible to reliably blow strong or weak air at any angle during head oscillation, and to stop blowing, contributing to the expansion of fan functionality. It is important to do so.

[Brief explanation of drawings]

FIG. 1 is a side view of a conventional electric fan, FIG. 2 is a side view of an electric fan according to an embodiment of the present invention, and FIG. 3 is a front view of an encoder for detecting rotation speed and rotation direction according to an embodiment of the present invention. , FIG. 4 is a side view of the encoder, FIG. 5 is a bottom view of the electric fan, and FIG. 6 is a circuit diagram showing an example in which a DC motor is used as the oscillating motor. 1...fan motor, 2...oscillation motor, 3...
...Crank, 4...Encoder for rotation speed detection, 5
... Rotation direction detection encoder, 6, 7 ... Photo coupler, 8 ... Electronic circuit, 10 ... Fan, 1
1... Crank rod.

Claims (1)

[Claims] 1 A fan motor, a fan rotated by the fan motor, and a oscillating motor located at the rear of the fan motor and capable of controlling forward and reverse rotation; The crank is provided with an encoder for detecting the number of rotations and the direction of rotation, and a photocoupler is placed opposite to the encoder for detecting the number of rotations and the direction of rotation, and the output of the photocoupler and the setting output of a switch or volume are connected. An electric fan whose oscillating motor is controlled by calculation processing.