JPH0240099A - Fan - Google Patents

Abstract

PURPOSE:To make an oscillating motion performable surely with a front part as the center by making an oscillating angle optionally settable with a signal out of a center detection circuit and time set by a specified program. CONSTITUTION:An oscillating action indication out of an oscillating motor 23 and an angle for oscillating a fan 20 as far as theta1 degree to the left and theta2 degree to the right from center or a position center of the fan 20 are inputted into an input circuit 36 by a key switch. Next, an angular velocity of the oscillating motor 23 is set to these inputted angles theta1, theta2 by a specified program, whereby time to be driven the left of the oscillating motor 23 and likewise time to be driven to the right are obtained. The oscillating motor 23 is operated till the center is detected by a center detection circuit 25, and from this operat ing time, a center value serving as a criterion is thus detected.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a blower with an improved swing mechanism.

[Conventional technology]

Figures 5 and 6 are for example Utility Model Publication No. 55-132392.
This is a diagram showing the conventional blower shown in the publication, in which (1) is the blower head, (2) is the motor cover that forms the outer casing of this blower head, and (3) is the inside of this motor cover. The blade is attached to the tip of the rotating shaft (5). (6) is a swing gear device installed on the back of this motor, with a swing knob (7) at the top for instructing the start and stop of the swing, and a crank (8) at the bottom that rotates in conjunction with a gear (not shown). ) has been established. (9
) is a base that supports the blower head (1), αα is a neck piece provided between this base and the blower head (1), and (11) is a neck piece that protrudes from this neck piece and supports the motor. A spindle is attached to (3) via the motor mounting plate (12), and (13) is a rod attached to this spindle on one side and the other on the crank (8) to move the crank (8). In conjunction with this, the blower head (1) is swung at a predetermined angle.

A conventional blower is configured as described above, and the power source is a motor (
3) and the swing knob ('7) is turned on, the swing gear device (6) is interlocked and the blade (4) is turned on.
The rotation of the air blower head (1) and the swinging of the blower head (1) are performed arbitrarily.

[Problem to be solved by the invention]

In the conventional blower as described above, the method of swinging the blower head (1) is based on a crank mechanism or gear, and the range of swing is limited to the length of the crank (8) and the structure of the gear.
The problem was that the center position during the swing was also unclear.

This invention was made to solve the problem,
It is an object of the present invention to provide a blower that can oscillate at an arbitrarily set angle with respect to a reliably determined center.

[Means to solve the problem]

The blower according to the present invention has a blower head equipped with blower blades rotatably mounted on a base, and includes a swinging motor having a rotating part for rotating the blower head, and a swinging motor having a rotating part for rotating the blower head; A center detection circuit is provided in the rotating part of the swing motor, and a microcomputer is provided that allows the swing angle to be arbitrarily set using a signal from the center detection circuit and a time set by a predetermined program. It is something.

[Effect]

In this invention, the positional center of the blower head is automatically obtained, and the swing angle of the blower head is determined based on an arbitrarily inputted time.

〔Example〕

FIG. 1 is a longitudinal sectional view of an electric fan showing an embodiment of this invention.
FIG. 2 is a circuit diagram, FIG. 3 is a flowchart showing the overall operation of the microcomputer, and FIG. 4 is a flowchart showing the swing motor control process in FIG. 5) indicates the same or equivalent part as the above conventional example, 20) indicates the electric fan, and (2)
1) is the base of this electric fan, (22) is the neck piece installed at the top end of this base so that it can move up and down, and (23) is the swing motor installed inside this neck piece, which can be used in forward and reverse directions. Both are rotatable for AC. (24) is a joint that projects upward from this oscillating motor, and is directly connected to the blower head, which will be described later. (25) is a center detection circuit installed in the part of the joint that protrudes from the neckpiece (22), and controls based on the time from the center using, for example, an optical sensor, a pole element, a contact point, etc. . (26) is the blower head installed at the tip of the joint (24), which includes the motor (3) installed inside the motor cover (2) and the rotating shaft (5) of this motor.
It consists of a blade attached to the tip of the blade. Furthermore, as shown in Fig. 2, the electrical configuration is as follows: (27) is a power source, (28) to (3)
1) is a triac that turns the motor (3) ON and OFF, (32) is a microcomputer, (33) is a power supply circuit for this microcomputer and other output circuits, (34) is a reset circuit, (35) 36 is an input circuit such as an input key switch (not shown), and 37 is an output circuit consisting of, for example, an LED.

(38) is a capacitor for the motor (3).

In the blower configured as above, the power source (27
) is input, the motor (3) starts, the ventilation action begins, and the input circuit (36) receives a swinging operation instruction for the swinging motor (23) and a direction to the left of the center, which is the center of the position of the fan (20). The angle of 01 degrees to the right and 62 degrees to the right is input using the key switch. Next, according to the predetermined program for the input angles θ1 and θ2, the above-mentioned swing motor (23)
is multiplied by the angular velocity χ, and the time t1 for driving the swinging motor (23) to the left is the same as the time t1 for driving the swing motor (23) to the right.
2 is obtained.

Then, the swing motor (23) is operated until the center is detected by the center detection circuit (25), and from this operating time, a reference center value T is detected, and this center value T
is set to O. The direction of the swing starts from this, and when T≦t2, the direction of swing is determined to be right, and when T>t2, the direction of swing is left, and when T≦t, the direction of swing is determined to be left, and when T>t, it is determined that the direction of swing is right. Then, the swing motor (23) is driven according to the values of tl and t2 set above. In this way, the microcomputer (32) allows the swing angle to be arbitrarily set within the range of 0° to 360°, and the swing operation is ensured at the set angle with the front of the fan (20) as the center. This makes it easier to operate and improves ease of use.

[Effect of idea]

As explained above, this invention includes a blower head equipped with blower blades that is rotatably mounted on a base, including a swinging motor that has a rotating part and rotates the blower head; A center detection circuit provided in the rotating part of the swing motor, and a microcomputer that allows the swing angle to be set arbitrarily using a signal from the center detection circuit and a time set by a predetermined program. By providing this, the swing angle can be set arbitrarily, and an easy-to-use blower that can reliably swing around the front can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of an electric fan showing an embodiment of this invention.
Figure 2 is the same circuit diagram, Figure 3 is a flowchart showing the overall operation of the microcomputer, Figure 4 is a flowchart showing the swing motor control process in Figure 3, and Figure 5 is a conventional blower. The perspective view and FIG. 6 are sectional views showing the blower head of the same conventional blower. In addition, the same reference numerals in each figure indicate the same or equivalent parts.
14) is the blade, (21) is the base, (23) is the swing motor, (24a) is the rotating part, (25) is the center detection circuit, (26) is the blower head, (32) is the micro It's a computer.

Claims (2)

[Claims] (1) In a blower head equipped with blower blades that is rotatably mounted on a base, a swinging motor that has a rotating part and rotates the blower head; It is characterized by being equipped with a center detection circuit provided in the rotating part and a microcomputer that allows the swing angle to be arbitrarily set using a signal from the center detection circuit and a time set by a predetermined program. A blower. (2) The blower according to claim 1, wherein the blower head and the oscillating motor are directly connected.