JPH0118879Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a swing angle adjusting device for an electric fan.

In the conventional fan swing angle adjustment device,
By transmitting the rotation of the blower motor that rotates the blower fan to the crank mechanism via the clutch mechanism, the head vibrates, changing either the distance of the crank part or the distance from the center of swing to the rod. The angle of oscillation was adjusted by adjusting the angle of oscillation, but in the case of a similar type, a clutch mechanism is required, and a mechanism for changing the distance of the crank part or the distance from the center of oscillation to the rod is required. The disadvantage is that the structure is complicated, which not only increases costs, but also makes assembly extremely complicated.

The present invention has been made to eliminate the above-mentioned drawbacks, and provides a fan oscillation adjustment device with a simple structure.

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

FIG. 1 is a side view of an electric fan equipped with a swing adjustment device according to the present invention, FIG. 2 is a partially cutaway sectional view of the head of the electric fan equipped with a swing adjustment device according to the present invention, and FIG.
The figure is a plan view schematically showing the mechanism of the swing adjustment device according to the present invention, and FIG. 4 is a plan view of another embodiment of the present invention.

In the drawings, reference numeral 1 denotes a fan body consisting of a base 2 and a stand 3, and a head 5 equipped with a fan guard 4 is attached to the upper end of the stand 3 so as to be swingable in the left and right directions. 6 is Fun Guard 4
A blower motor is provided inside the head 5 to drive the blower fan inside. Reference numeral 7 serves as a swinging motor and is attached to a mounting board 15 attached to the rear side of the blower motor 6. The oscillating motor 7 is composed of a reversible synchronous motor that can rotate in both forward and reverse directions and reverses direction when a load above a certain level is applied. The crank 10 is fixed. Numeral 11 is a boss provided at a predetermined position on the lower surface of the crank 10, and a swinging rod 12 pivotally attached to the neck piece is fixed to the boss 11 with a screw 13. When the oscillating motor 7 is driven, the crank 10 rotates, and its rotational force is transmitted to the oscillating rod 12 to start the oscillating motion of the head 5. Reference numeral 14 denotes an obstacle loosely connected to the mounting board 15, which restricts the range of the neck vibration movement by coming into contact with the wall surface 10b of the crank 10, and its details are shown in FIG. . That is, as shown in FIG. 3, the obstacle 14 is located at the rear end surface of the head 5, and by moving the knob on the end surface of the obstacle 14 back and forth, the range of neck vibration of the crank 10 is restricted. , and begin to perform wider neck vibration movements.

Here, the operation of the swing adjustment device configured as described above will be explained. First of all, the blower motor 6
is energized to drive the blower fan, while when energized to the swinging motor 7, its rotating force is generated by the crank 10.
The head 5 is transmitted to the swinging rod 12 via the head 5 and rotates to the right or left. Therefore, the mounting board 15
The tip of the obstacle 14 attached to the crank 10 is positioned so that it fits into the groove 10a of the crank 10, and when the crank 10 rotates and the obstacle 14 comes into contact with the side wall 10b of the crank 10, the swinging stops and the swinging stops. A large load is placed on the motor 7. Therefore, the swinging motor 7 rotates in the reverse direction, and the swinging direction of the head 5 turns in the opposite direction to the above-mentioned direction. Therefore, the swing angle is smaller than in the swing state where the obstacle 14 does not contact the crank 10.

FIG. 4 shows another embodiment of the present invention. As shown in FIG. 4, the movement steps of the obstacle 14 are made into multiple stages (three stages in the figure), and the corresponding side walls of the crank 10 ( Hit surface) 10b, 1
If 0c, . . . are also set in multiple steps in the circumferential direction from the center, it becomes possible to adjust the head oscillation in multiple steps.

As described above, the present invention uses a motor that can rotate in both forward and reverse directions as the swinging motor, and the swinging direction changes when an obstacle attached to the head hits the crank. It is easy to assemble and can be manufactured at low cost by simply providing a motor that can rotate in both forward and reverse directions without using a complicated mechanism, and it is also easy to adjust the neck vibration movement because all you have to do is move obstacles. It has the remarkable effect that it can be carried out.

[Brief explanation of the drawing]

FIG. 1 is a side view of an electric fan equipped with a swing adjustment device according to the present invention, FIG. 2 is a partially cutaway sectional view of the head of the electric fan equipped with a swing adjustment device according to the present invention, and FIG.
The figure is a plan view schematically showing the mechanism of the swing adjustment device according to the present invention, and FIG. 4 is a plan view of another embodiment of the present invention. 1: Fan body, 5: Head, 6: Blower motor, 7: Swing motor, 10: Crank, 1
2: Rod for shaking the head, 14: Obstacle.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. The head of the electric fan is provided with a blower motor that rotates a blower fan and a head oscillation motor that causes the head to vibrate, and which is linked to the oscillation motor. The oscillating motor is configured with a motor that can rotate in both forward and reverse directions and reverses the direction of rotation when a load above a certain level is applied, and the rotation angle of the rotational movement of the crank is A movable obstacle regulating the range is provided, and the obstacle regulates the rotation angle range of the rotational motion of the crank, thereby causing the swing motor to rotate in forward and reverse directions, thereby adjusting the swing angle of the head. A swing angle adjustment device for an electric fan. 2. The oscillation angle of the electric fan as set forth in claim 1 of the utility model registration claim, in which the steps of moving an obstacle are multi-stage, the contact of the crank against the obstacle is changed, and the oscillation angle can be adjusted in multiple stages. Regulator.