JPH0211893A - Electric fan - Google Patents

Abstract

PURPOSE:To enable a fan, while it is formed in a thin type, to blow air in a wide range of vertical direction by converting the rotary motion of an eccentric cam, mounted to a main shaft of an oscillating motor, into the piston motion of an oscillating rod and vertically oscillating a guard, connected to a point end of the oscillating rod, with a turning shaft serving as the center. CONSTITUTION:A blower motor 1 is fixed to the center of a protecting guard 3, a blades 2, mounted to a rotary shaft of the blower motor 1, are coated with the protecting guard 3. Turning shafts 3a, provided in both ends of the protecting guard 3, are turnably held to an arm 4, and it is supported by a stand 5. An oscillating motor 7 is fixed to the arm 4, and an eccentric cam 9 is fixed to an output shaft 8 of the oscillating motor 7. An oscillating rod 6 connects its one end turnably to an acting shaft 3b, mounting the other end turnably to an eccentric shaft 9a of the eccentric cam 9 fixed to the output shaft 8 of the oscillating motor 7.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to electric fans used in homes.

Conventional technology Generally speaking, electric fans blow air in a predetermined direction (up and down).
7. It has a swing angle adjustment function so that it can be used in a fixed position.

Conventionally, this type of electric fan has had a configuration as shown in FIG. That is, the blower motor 1 is fixed to the center of the protective net 3, and the blades 2 attached to the rotating shaft of the blower motor 1 are covered with the protective net 3.

Both ends of the protective net 3 are held by an arm 4 so as to be able to move up and down, and the arm 4 is supported by a stand 5.

When the fan configured as described above changes the air flow in the vertical direction, the protective net 3 is rotated and fixed in a predetermined direction.

Problems to be Solved by the Invention However, the above-mentioned conventional configuration has the disadvantage that if the elevation direction is set at a predetermined angle, air can only be blown in that direction and cannot be blown over a wide range.

In addition, there are some fans that automatically oscillate in the vertical direction by attaching an upward oscillating motor to the rear of the blower motor, but the rear part of the blower motor protrudes and the thickness of the fan increases. However, the problem was that it required a large installation space.

The present invention solves the above-mentioned conventional problems, and aims to provide a fan that can blow air over a wide range in the vertical direction without increasing the thickness of the fan.

Means for Solving the Problem In order to solve this problem, the electric fan of the present invention includes a blower motor, a blade attached to a rotating shaft of the blower motor, a blade that supports the blower motor, and a blade that supports the blower motor. a protection net for protecting the oscillator, an am for rotatably holding a rotating shaft provided at both ends of the protection net, and a stand for supporting the arm; a oscillating motor is attached to the arm; An eccentric cam is attached to the output shaft of the motor, one end of the swing rod is rotatably connected to the eccentric shaft of the eccentric cam, and the other end is rotatably connected to the operating shaft provided near the rotation shaft of the protection net. It has a movably connected configuration.

Function: With this configuration, the rotational motion of the eccentric cam attached to the main shaft of the oscillation motor is converted into the piston movement of the oscillation rod, and the guard connected to the tip of the oscillation rod moves up and down around the same shaft. A shaking motion will be performed.

EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 and 2. As shown in the figure, the blower motor 1 is fixed at the center of a protective net 3, and the blades 2 attached to the rotating shaft of the blower motor 1 are covered with the protective net 3. Rotating shafts 3a provided at both ends of the protective net 3 are rotatably held by an arm 4, and the arm 4 is supported by a stand 5.

The swinging motor 7 is fixed to the arm 4, and an eccentric cam 9 is fixed to the output shaft 8 of the swinging motor.

The swinging rod 6 has one end rotatably connected to an operating shaft 3b that is slightly separated from the rotation shaft 3a of the protection net 3, and the other end to an output shaft 8 of a swinging motor 7 attached to the arm 4. It is rotatably attached to the eccentric shaft 9a of the fixed eccentric cam 9.

In the above configuration, the oscillating motor 7 is energized and the eccentric cam 9 fixed to the output shaft 8 rotates, and the oscillating rod 6 is rotatably attached to the eccentric shaft 9a of the eccentric cam 9. rotates around the output shaft 8. As a result, the other end of the swinging rod 6, which is rotatably connected to the action shaft 3b of the protection net 3, performs reciprocating up and down movement around the rotation shaft 3a, and the direction of the protection net changes to -L downward. Become something to do.

Further, since the oscillating motor T is fixed to the arm 4 and the oscillating motor 7 is not attached to the rear of the blower motor 1, the thickness of the electric fan can be kept small.

Effects of the Invention As is clear from the above embodiments, the present invention has the effect of making the electric fan as thin as the conventional one without increasing the thickness, and also being able to automatically oscillate in the vertical direction. This makes it possible to realize an excellent electric fan that can obtain the following characteristics.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an electric fan according to an embodiment of the present invention, FIG. 2 is a side view of essential parts of the electric fan, and FIG. 3 is a perspective view of a conventional 67 electric fan. 1...Blower motor, 2...Blade, 3
...protection net, 3a...rotation shaft, 3b.
...Axis of action, 4...Arm, 5...
...Stand, 6...Rod for swinging, 7...
...Motor for swinging, 9...Eccentric cam, 9a...
...Eccentric shaft.

Claims (1)

[Claims] A blower motor, a blade attached to a rotating shaft of the blower motor, a protective net that supports the blower motor and protects the blade, and a rotating shaft provided at both ends of the protective net to rotate. It includes an arm that can be freely held and a stand that supports the arm, a swinging motor is attached to the arm, an eccentric cam is attached to the output shaft of the swinging motor, and one end of the swinging rod is connected to the eccentric cam. An electric fan which is rotatably connected to an eccentric shaft and whose other end is rotatably connected to an operating shaft provided near the rotation axis of the protection net.