JPS5941038B2 - Fan - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fan having a function of adjusting the elevation angle of the fan head and a swinging function, and particularly relates to a swinging device using a fan motor and a separate swinging motor as drive sources. It is.

In general, a swinging device for this type of electric fan has a fan head consisting of a fan, a fan motor, a guard, etc. rotatably supported on a neckpiece by a spindle, and
A gear box is formed at the rear of the fan motor, a reduction gear group built into the gear box, a crank gear rotated by the fan motor via the gear group, and an oscillating rod pivotally installed between the crank gear neckpiece. A swinging device consisting of a fan motor, etc. is provided, and the swinging rod is caused to oscillate from side to side by rotation of the rotating shaft of the fan motor, and the head of the fan is caused to oscillate at a predetermined swinging angle around the spindle. This device requires a group of reduction gears for deceleration and a gear box containing the gears, and cannot be called good in terms of structure, assembly work, and cost, and the vibration of the neck is The drawback is that it depends on the operating speed of the fan motor.

Therefore, conventionally, it was considered to use a dedicated oscillation motor as the drive source for the oscillation operation, but even in this case, the oscillation motor is attached to the rear end face of the fan motor, so the fan Wiring for the motor and the oscillating motor had to be done at the same time, and the wiring work was troublesome and there was a risk of wiring errors.

The present invention has been made in view of the above points, and it is an object of the present invention to provide a fan whose neck vibration operation is not affected by the operating speed of the fan motor, and in which wiring work to the fan motor and the swing motor can be easily performed. be.

Embodiments of the present invention shown in the drawings will be described in detail below.

Reference numeral 1 designates a stand that incorporates control parts such as switches and timers, and a neck piece 2 is provided at the upper end of the stand.

A well-known elevation angle adjustment device (not shown) is interposed between the stand 1 and the neckpiece 2, and the neckpiece 2 can be adjusted to any elevation angle by vertical movement.

Reference numeral 3 designates the fan head, which is composed of a fan motor 4, a fan 5 attached to the rotating shaft of the motor 4, a motor cover 6 that covers and protects the fan motor 4, a card 7 that covers the fan 5, etc. .

Reference numeral 8 denotes a swing motor consisting of a reversible synchronous motor installed in the storage chamber 10 of the neck piece 2, and its rotating shaft 9 projects perpendicularly onto the upper surface of the neck piece 2.

11 is attached to the neck piece 2 with a screw 13, serves as a lid that closes the upper opening, and has a through hole 12 through which the rotating shaft 9 is inserted.

Reference numeral 14 denotes a spindle fixed to the lower part of the fan motor 4 by caulking or other means, and a rotating shaft 9 of the oscillating motor 8.
The fan head 3 is directly connected to the rotary shaft 9 by means of a spindle 14.

16 is a lever fixed to the spindle 14 and rotates as the swing motor 8 rotates.

17 and 17' are stoppers formed on the lid 11 by cutting and raising on an arc line drawn with the through hole 12 as the center and at an appropriate angle, so that the lever 16 that rotates along with the rotating shaft 9 is attached. It is positioned so that it hits.

The swing motor 8, which is a reversible synchronous motor, is reversed every time the lever 16 hits the stopper 17 or 17', and the lever 16 reciprocates between the stops 17 and 17'.

In other words, the swing motor 16 is connected to the lever 16 and the stopper 1.
The swing angle is determined by the relationship 7 and 17'.

Next, its effect will be explained.

When the oscillating motor 8 is now driven, the oscillating motor 8 initially rotates, for example, counterclockwise, and then rotates in the same direction up to a predetermined angle.

When the oscillating motor 8 rotates to a predetermined angle, the lever 16 hits the stopper 17, which prevents the oscillating motor 8 from rotating in the same direction, and at that point it reverses and rotates clockwise. This continues until the lever 16 hits another stopper 17' and is blocked.

Next, when the lever 16 hits the stopper 17', the swing motor 8 is reversed and rotates counterclockwise again.

As the head oscillating motor 8 repeatedly performs such an operation, the fan head 3 reciprocates left and right around the rotating shaft 9 to perform a oscillating operation.

Although a reversible synchronous motor that automatically reverses rotation when its rotation is blocked is used as the swing motor 8, a motor that can switch between forward and reverse rotation by changing the polarity is used to rotate the fan head 3 into the neck. It is also possible to operate the fan by vibration, for example, a polarity changeover switch is provided on the side of the fan head 3, and a pair of operators is provided on the neckpiece 2 side separated by an appropriate angle, and the changeover switch is attached to this operator. The polarity may be switched and the oscillating motor may be reversed when it is hit.

Further, in the above embodiment, the lever 16 is connected to the neck piece 2.
An angle setting plate that stands upright on the side and has a notch into which the lever 16 fits is fixed to the spindle 16, and the lever 16 is fixed to the spindle 16.
Depending on the relationship between the fan head 3 and the angle setting plate, the oscillating motor 8 can be reversed at a predetermined rotation angle to cause the fan head 3 to perform an oscillating motion.

According to the present invention as described above, by equipping the neckpiece with a head oscillation motor, it is possible to adjust the elevation angle of the fan head without any hindrance (as before), and the neck oscillation motion is controlled by the operation of the fan motor. It is not affected by the speed and is always carried out at a constant speed, making it very desirable to use.It also makes it easy to wire the fan motor and oscillating motor, making it an excellent choice for assembly work. be.

In other words, if the oscillating motor is installed on the fan head together with the fan motor, the wiring work at the fan head must be done not only for the fan motor but also for the oscillating motor at the same time, and then wired to the stand side. If not.

However, in this case, the wiring work for the fan head only needs to be done for the fan motor as before, and the wiring work for the oscillation motor can also be done between the fan motor, that is, the fan head side. Since it can be done regardless of the wiring, it can be done easily without the risk of erroneous wiring, which is very preferable in terms of assembly work.

[Brief explanation of the drawing]

Fig. 1 is a schematic side view of the electric fan of the present invention, Fig. 2 is a sectional view of the essential parts of the above, Fig. 3 is a configuration diagram of the essential parts of the above, Fig. 4 is a sectional view of the neck piece of the above, and Fig. 5 is a sectional view of the neck piece of the above. FIG. 1: Stand, 2: Neckpiece, 3: Fan head, 4
: Fan motor, 5: Fan, 7: Guard, 8: Swing motor, 9: Rotating shaft, 16: Lever, 17.17': Stopper.

Claims (1)

[Claims] 1 A neckpiece is equipped with a oscillating motor, a fan head consisting of a fan, a fan motor, a guard, etc. is fixed to the rotating shaft of the motor, and the oscillating motor is rotated at a predetermined rotation angle to create an electric fan. The electric fan is provided with an angle setting means for setting the swing angle of the head, and the neck piece is pivotally mounted on a stand so that the angle of elevation and elevation can be adjusted.