JPS645112Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an electric fan oscillation device.

Some conventional head oscillation devices do not have a dedicated oscillation motor, but instead use a fan motor that slows down the rotation and is used for the oscillation operation. However, the swing speed also becomes slower, and even if it is possible to change the swing speed, there is a drawback that the swing speed cannot be selected independently of the rotational speed of the fan. Another conventional device has a structure in which the oscillation mechanism is driven by a dedicated oscillation motor, but this also has the disadvantage that only a fixed oscillation speed can be obtained and it is difficult to use.

The present invention has been made with the aim of eliminating the above-mentioned drawbacks of the conventional fan, and allows the swing speed to be selected from two types regardless of the fan rotation speed.

Hereinafter, an embodiment of the present invention will be described based on the drawings. In FIG. 1, 1 is a fan motor to which a blower fan (not shown) is fixed to the rotating shaft, and 2 is a fan motor attached to the rear end surface of the fan motor 1. It is a swinging motor attached with a metal fitting 3, and as shown in Figs.
There are provided a speed reduction device A for transmitting air to the air, and a swinging mechanism B for changing the air blowing direction, which has a known structure and is driven by the rotational force of the speed reduction output shaft 4, as shown in FIG. The swinging mechanism B has a knock pin 5 on the deceleration output shaft 4.
and an E-ring 6.
and a swinging rod 9, one end of which is rotatably supported by a screw 8 on the boss portion of the crank 7, and the other end of the rod 9 is connected to a stand-side member such as a neck piece or swinging ring as is well known. It is rotatably supported. 10 is a motor cover;
The cover 10, the swing motor 2, the swing mechanism B,
A fan head D is composed of a fan, a fan guard, etc., and as is well known, the head D is rotatably supported by a neck piece, which is a stand side member, with a spindle, and has a reciprocating neck vibration movement to the left and right around the spindle. It is something that does.

A reversible motor is used as the oscillating motor 2, and the speed reduction device A has a second
As shown in Figure 3, a normal rotation reduction mechanism transmits only the normal rotation of the oscillating motor rotating shaft 2a to the reduction output shaft 4 at the first reduction ratio.
A ₁ , and a reversing speed reduction mechanism that transmits only the reverse rotation of the oscillating motor rotating shaft 2a to the speed reduction output shaft 4 at a second reduction ratio.
It consists of A ₂ . In other words, normal rotation reduction mechanism
A ₁ is an input gear 12 fixed to a rotating shaft 2a arranged in the center of a casing 11, a large gear 13 meshed with this, and a small gear 14 fixed to this.
, a large gear 15 meshed with this, a small gear 16 fixed to this, and a large gear 1 meshed with this.
7, a one-way clutch _C1 connected thereto that transmits rotation only in the forward direction, a small gear 18 connected to the clutch _C1 , and an output gear 19 meshed with this.
The output gear 19 is fixed to the reduced feed output shaft 4. Further, the reversing speed reduction mechanism _A2 is
The input gear 12 and the large gear 2 meshed with the input gear 12
0, a small gear 21 fixed to this, a large gear 22 meshed with this, a one-way clutch _C2 connected to this that transmits rotation only in the opposite direction, and a small gear connected to said clutch _C2 . It is composed of a gear 23 and an output gear 19 meshed with the gear 23. Note that the one-way clutches C ₁ and C ₂ have a well-known structure as shown in FIG. 26, an output side ring 27 rotatably fitted on the output side ring 26, a claw 25, and the ring 27.
It consists of a steel ball 28 and a spring 29 interposed between the steel balls 28 and 29. When the ratchet wheel 26 rotates in the direction of the arrow, the steel balls 28 are pressed against the ring 27, so the rotation is caused by the rotation of the ring 27.
However, when rotating in the opposite direction, the rotation is circular 27
It is something that cannot be conveyed to people.

Next, to explain the operation, when the user selects the lower swing speed and operates it, the rotating shaft 2a of the swing motor 2 rotates in the normal direction, so the rotational force is transferred to the normal rotation reduction mechanism A ₁ Gears 12, 13, 14, 15, 1
It is transmitted to the output shaft 4 through the clutch C ₁ and the gears 18 and 19, and the shaft 4 rotates at a reduced speed at the first reduction ratio, so that the fan head D undergoes a slow neck vibration action via the head vibration mechanism B. I do. At this time, the gears 20, 21, and 22 of the reverse speed reduction mechanism _A2 also rotate, but since the one-way clutch _C2 is disengaged, this mechanism _A2
does not operate normally.

When the user selects and operates the higher swing speed, the rotating shaft 2a of the swing motor 2 rotates in the opposite direction, so the rotational force is transferred to the gears 12, 20, 21 of the reverse speed reduction mechanism _A2 , 22, clutch C ₂ , gear 2
3 and 19 to the output shaft 4, and the shaft 4 rotates at a reduced speed at the second reduction ratio, so that the fan head D performs a rapid head vibration operation via the head vibration mechanism B. At this time, the gears 13 to 17 of the normal rotation speed reduction mechanism _A1 also rotate, but since the one-way clutch _C1 is disengaged, this mechanism _A1 does not operate normally.

In the above, the selection operation for the swing speed is as follows:
The switching operation may be a button or the like, or may be an operation of applying force to the head of the fan that is oscillating to temporarily stop the oscillating motion.

In addition, in the present invention, the fan oscillation device includes not only the head oscillation type shown in the embodiment, but also a louver rotation type fan in which the louver of a louver rotation type electric fan is rotated to change the direction of air flow. .

As is clear from the above explanation, in the present invention, a reversible motor is used as the oscillating motor, and the reduction device that reduces the rotational force of the rotating shaft of the oscillating motor and transmits it to the deceleration output shaft has a first reduction ratio. Since it is composed of a forward rotation reduction mechanism that decelerates and a reverse rotation reduction mechanism that decelerates at a second reduction ratio, according to the present invention, the fan rotation speed can be changed simply by switching between forward and reverse rotation of the oscillating motor. The oscillation speed can be selected from two types, either fast or slow, regardless of the oscillation speed, which has the effect of providing an extremely easy-to-use electric fan.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; Fig. 1 is a partially cutaway side view of the rear part of the motor cover, Fig. 2 is a plan view of the speed reducer, and Fig. 3 is a side view of the deceleration device when it is unfolded to explain its operation. FIG. 4 is a cross-sectional view of the one-way clutch. 1: Fan motor, 2: Oscillating motor, 4: Reduction output shaft, A: Reduction device, A ₁ : Forward rotation reduction mechanism,
A ₂ : Reverse speed reduction mechanism, B: Swing mechanism, C ₁ , C ₂ : One-way clutch.

Claims (1)

[Scope of utility model registration request] A swinging motor separate from the fan motor, a speed reduction device that reduces the rotational force of the rotating shaft of the swinging motor and transmits it to the reduction output shaft, and a neck for changing the direction of blowing driven by the rotational force of the reduction output shaft. In the oscillation device for an electric fan, a reversible motor is used as the oscillation motor, and the reduction device transmits only the normal rotation of the oscillation motor rotation shaft to a reduction output shaft at a first reduction ratio. A swinging device comprising a normal rotation reduction mechanism that transmits the rotation, and a reverse rotation reduction mechanism that transfers only the reverse rotation of the rotation shaft of the swing motor to the reduction output shaft at a second reduction ratio.