JPH0456160B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to an electric fan that can change the center of the oscillating motion of the fan itself performed by an oscillating device.

(b) Prior art As a technology prior to the present invention,
There is a double oscillation device for an electric fan described in the above publication. In the double oscillation device, one end of the oscillation link of the oscillation device is pivotally supported on the oscillation center adjusting body which is rotatably supported on the neck piece, and the oscillation center adjustment body is connected to the neck piece by a concave and convex engagement mechanism. On the other hand, it is supported so that it can be rotated as appropriate, and the engagement and disengagement mechanism is operated by holding the main body of the fan and applying external force.

There is also an electric fan oscillation control device described in Japanese Utility Model Publication No. 49-8979. The oscillation control device has one end of the oscillation link of the oscillation device pivoted on a oscillation center adjustment body rotatably supported on a neck piece, and a oscillation operation handle device formed on a stand on the oscillation center adjustment body. By appropriately engaging and disengaging the swing pin operated via a wire, the rotation of the swing center adjusting body relative to the neck piece is stopped, and the swing center is changed. The oscillation center adjusting body is rotated by the pressing force of the oscillation link when the oscillation pin is not engaged with the neck piece.

(c) Problems to be Solved by the Invention The conventional double oscillation device for an electric fan disclosed in Japanese Utility Model Publication No. 18760/1987 is one in which the electric fan itself is forced to vibrate. Therefore, it is dangerous to do so while the neck is vibrating (while the fan is running), and at the same time, it is difficult to operate if the fan is wall-mounted.

Furthermore, although the electric fan oscillation control device disclosed in Japanese Utility Model Publication No. 49-8979 reduces danger and improves operability, it requires a complicated mechanism that requires adjustment, such as a wire to operate the oscillation pin. , the structure becomes complicated and may cause malfunctions due to assembly errors.

In addition, the oscillation operation does not stop even when the oscillation center is being adjusted, making it difficult to confirm the adjusted oscillation center.

In view of the shortcomings of the conventional technology, the present invention improves safety and operability in adjusting the center of oscillation, and
To provide an electric fan whose swing center adjustment can be easily checked.

(d) Means for Solving the Problems The present invention includes a main body of a fan having an electric motor and a blower blade, a neck piece for pivoting the pivot of the main body of the fan, and a oscillation center adjusting body for pivoting around the pivot. A swing device that rotates the main body of the electric fan relative to the swing center adjustment body, a drive motor device that rotationally drives the swing center adjustment body with respect to the neck piece, and a swing motion caused by the swing device when the drive motor device is driven. The problem can also be solved by a means formed from a control section for stopping the motor.

(E) Function According to the present invention, when operating the drive motor device, the oscillation device is stopped by the control section, and the electric fan itself is rotated by the drive motor device.

(F) Embodiment The present invention will be explained based on a first embodiment shown in FIGS. 1 to 8 and a second embodiment shown in FIGS. 9 to 11.

First, a first embodiment shown in FIGS. 1 to 8 will be described.

FIG. 1 is a side sectional view of a fan main body 1 in an electric fan that supports the fan main body 1 so as to be movable up and down. The electric fan main body 1 has a neck piece 4 that is supported on the bifurcated part of a connecting body 3 at the upper end of a support column 2 of a stand (not shown) so as to be able to adjust the elevation angle, and a pivot 5 on the neck piece 4.
an electric motor 6 supported by a motor 6; a blower blade 8 detachably attached to a rotating shaft 7 of the electric motor 6 with a spinner;
It is provided with a guard body 9 that covers the blower blade 8 and can be disassembled at the front and rear.

FIG. 2 is a longitudinal sectional view showing how the pivot shaft 5 of the electric motor 6 is pivoted to the neck piece 4. The axis 5 is an aluminum die-cast motor bracket 10 of the electric motor 6.
It is planted in A cylindrical portion for mounting the guard body 9 is formed at the center of the front surface of the motor bracket 10.
A swing device 11 is provided at the rear of the motor bracket 10.
A mounting portion 12 for a driving capacitor of the electric motor 6 is formed. A synthetic resin plate-shaped front case 13 is fixed to the front of the motor bracket 10 with screws, and a synthetic resin cup-shaped rear case 14 is fixed to the rear end of the mounting portion 12 with screws. The open end of the rear case 14 fits into the periphery of the front case 13.

The swinging device 11 is attached to a mounting plate 14 on the bottom surface of the mounting portion 12.
The oscillating motor 15 fixed at the oscillating motor 15
It consists of a cam body 17 fixed to an output shaft 16 protruding downward from the mounting plate 14 of the cam body 17, and a swing link 18 whose one end is pivotally supported by the cam body 17. Oscillating motor 15
It is made up of a synchronous motor, Warren motor, etc., and has a reduction gear mechanism inside.

The neck piece 4 is made of synthetic resin, and its upper opening is shaped like an egg with a small diameter at the front and a large diameter at the rear. At the front of the neck piece 4, a cylindrical bearing part 19 is formed at the center of the small diameter semicircular part. A cylindrical portion 21 of a swing center adjusting body 20 is inserted and supported in the cylindrical bearing portion 19 . A pivot shaft 5 of an electric motor 6 is inserted into the cylindrical portion 21 and supported therein. The swing center adjustment body 20 is the neck piece 4
It is formed of a disc-shaped body having an outer diameter approximately equal to the inner surface of the front small-diameter circular opening edge. For network peace 4,
The oscillation center adjustment body 20 rotates, and the oscillation center adjustment body 2
0 and the neck piece 4, the pivot 5 can rotate. Swing center adjustment body 20 for neck piece 4
As shown in FIG. 2, the pivot shaft 5 is prevented from coming off from the bearing portion 19 by inserting the tip of the screw 22 that is screwed into the neck piece 4 into the elongated hole 23 formed in the circumferential direction of the cylindrical portion 21 and the groove 24 of the pivot shaft 5. This is done by inserting.

FIG. 3 shows an exploded perspective view of the neck piece 4. The neck piece 4 includes a swing center adjusting body 20.
A drive motor device 25 for reciprocating rotationally driving the oscillation center adjusting body 20 is incorporated. Figures 5 to 8
The figure is a plan view for explaining the movement of the oscillation center adjusting body 20 driven by the drive motor device 25.
At the rear of the neck piece 4, a drive motor 26 of a drive motor device 25 is attached to the boss portion 2 in the neck piece 4 with a screw 28 so that its output shaft 27 protrudes upward.
It is fixed at 9. The drive motor 26 is formed of a synchronous motor, Warren motor, etc., and is equipped with a reduction gear mechanism. A laminated upper cam 30 and lower cam 31 are mounted on the output shaft 27 of the drive motor 26,
It is configured to rotate integrally with the output shaft 27.
The lower cam plate 31 is formed with an eccentric shaft portion 34 into which a ring portion 33 at one end of the drive link 32 is fitted and pivoted, and the upper cam plate 31 prevents the ring portion 33 from coming off. The upper opening of the neck piece 4 is closed by a cover plate 37 fixed to a boss 35 protruding inside the neck piece 4 with a screw 36. A circular protrusion 38 coaxial with the output shaft 27 is formed on the upper cam plate 30, and the protrusion 38 is pivotally supported in a shaft support hole 39 formed in the cover plate 37. By supporting the upper cam plate 30 with the cover plate 37, rotational vibration of the upper and lower cam plates 30, 31 due to the output shaft 27 can be prevented. The other end of the drive link 32 is a shaft portion 4 protruding from the periphery of the lower surface of the swing center adjusting body 20.
0, and its removal is prevented by placing a drive link 32 on the upper end of the bearing portion 19.

The other end of the oscillating link 18 of the oscillating device 11 is pivotally supported by a shaft portion 41 protruding from the periphery of the upper surface of the oscillating center adjusting body 20, and is prevented from coming off with a screwed washer. The shaft portion 40 and the shaft portion 41 are the swing center adjusting body 2
Formed at opposite positions sandwiching the cylindrical portion 21 of 0,
The external force from the swing link 18 and the drive link 32 that is applied to the swing center adjuster 20 is applied to the swing center adjuster 20.
It is applied evenly to prevent deflection. On one side of the swing center adjusting body 20, there is a pointer portion 4 located so as to be caught on the front upper edge of the neck piece 4.
2 is formed. The pointer portion 42 indicates where the center of the oscillating motion of the fan main body 1 about the axis 5 by the oscillating device 11 is. The cover plate 37 covers the upper opening of the neck piece 4 to the extent that it does not prevent the movement of the shaft portion 41, pointer portion 42, etc., which are the parts of the oscillation center adjusting body 20 that protrude from the neck piece 4. The base plate 37 is supported at two places by screws 36, but if it sag due to deformation, the movement of the oscillation center adjusting body 20 will be affected, so a ring part 43 is formed at the front part and the step part of the pivot 5 is It is pressed by
An arcuate hole 44 is formed in the swing center adjusting body 20. There is an insertion hole 45 in the front lower surface of the neck piece 4.
The size of the insertion hole 45 is reduced by elastically engaging the cover plate 46 with the insertion hole 45. The arc-shaped hole 44 and the insertion hole 45 are for wiring lead wires 47 that connect to the electric motor 6, the oscillating motor 15, and the drive motor 26. The lead wire 47 is inserted through the arcuate hole 44 of the rotating oscillation center adjustment body 20 to connect the oscillation link 18 and the drive link 32 or the neck piece 4.
This prevents disconnection accidents caused by being caught in the gap between the wire and the wire or coming into contact with the wire.

FIG. 4 shows an electric circuit diagram of the electric fan. The speed control tap of the electric motor 6 is controlled by the changeover control switch 5.
0 and is connected to commercial power. Electric motor 6
A swing motor 15 and a drive motor 26 are connected in parallel to each other. Power is supplied to the swing motor 15 and the drive motor 26 only while the electric motor 6 is being operated by the changeover control switch 50. A head vibration stop switch 51 is connected in series to the head vibration motor 15. A normally open switch 52 as a drive switch is connected in series to the drive motor 26, and a normally closed switch 52 as a control unit is connected to the oscillating motor 15 as a control unit that cuts off power to the oscillating motor 15 and stops the oscillating device 11. 53 are connected in series, and both switches 5 are connected so that when the normally open switch 52 is closed, the normally closed switch 53 is opened.
2 and 53 are linked. Therefore, even if the oscillation stop switch 51 is closed and the oscillation motor 15 is operated and the fan main body 1 is in oscillation operation, when the normally open switch 52 is operated to operate the drive motor 26, the normally closed switch is turned off. 53 opens and the swing motor 15
stops. As a result, the rotational movement of the oscillating center adjusting body 20 caused by the operation of the drive motor 26 can be confirmed as the movement of the fan main body 1 without being confused by the oscillating movement.

Next, the rotation motion of the fan main body 1 with respect to the neck piece 4 by the swinging device 11 and the drive motor device 25 will be explained.

The swinging motion of the fan main body 1 by the swinging device 11 is performed around the pivot 5, and in this embodiment, the swinging motion is performed at an opening angle of about 100 degrees.
The oscillation movement is caused by the pointer section 42 of the oscillation center adjustment body 20.
Centered on the line connecting axis 5 and axis 5, about 50 degrees to the right,
It is performed as if swinging about 50 degrees to the left. Shaking device 11
The oscillating motion is performed not with respect to the neck piece 4 but with respect to the oscillation center adjusting body 20.

The drive motor device 25 causes the fan main body 1 to reciprocate and rotate with respect to the neck piece 4 by reciprocating and rotating the oscillation center adjusting body 20 .
By operating the drive motor device 25, the oscillation center adjusting body 20 is opened within a range of about 90 degrees in this embodiment. When the pointer section 42 is located at the front end of the neck piece 4 as shown in FIGS. 5 and 7, it is swung approximately 45 degrees to the right and approximately 45 degrees to the left.

By driving the drive motor device 25, the center of the swing motion performed by the swing device 11 can be changed as appropriate. For example, as shown in FIG.
When the pointer 42 is rotated 45 degrees to the right and then stopped, the oscillating device will oscillate within a range of 100 degrees centered on a position shifted 45 degrees to the right. Furthermore, as shown in FIG. 8, when the robot is rotated 45 degrees to the left, it swings within a range of 100 degrees around a position shifted 45 degrees to the left. Since the drive motor device 25 can be driven regardless of the operation of the swing device 11, it can also be used when it is desired to change the direction of air blowing.

By changing the center of swing by the swing device 11 and changing the blowing direction by the drive motor device 25, it is safe without having to change the main body of the fan 1, and when the normally open switch 52 is turned on and off. It is easy to operate and does not cause malfunctions or malfunctions due to assembly errors.

A second embodiment shown in FIGS. 9 to 11 will be described.

In the first embodiment described above, the drive motor device 2
When the normally open switch 52 for driving the fan 5 is operated, the normally closed switch 53 connected in series to the oscillating motor 15 of the oscillating device 11 is turned OFF, stopping the oscillating movement of the fan main body 1, and the drive motor device 11 is operated. 25, but since the stop position of the swing device 11 is not constant, it is only possible to determine where the center of swing is by using the pointer section 42 located on the front of the neck piece 4. Although the oscillating device 11 was stopped in order to see the rear of the rotating blower blade 8, it was still a little difficult to adjust the center of oscillation.

In this embodiment, in order to make it easier to confirm the center of oscillation compared to the first embodiment described above, the oscillation of the fan main body 1 is stopped when it coincides with the pointer portion 42. In the description of this embodiment, drawings and descriptions of the same constituent parts as in the first embodiment will be omitted, and only the differences between this embodiment and the first embodiment will be explained.

9 and 10 are bottom views of the essential parts of the main body 1 of the electric fan, drawn with a focus on the positional relationship of each component. The dashed line in the figures indicates the oscillation center line S, and FIG. 9 shows the front view. 10 is a state facing to the right.

A detection switch 61 that is turned on and off by an operating portion 60 formed on the cam body 17 is mounted on the mounting plate 14 (not shown) of the swinging device 11. The detection switch 61 is operated by the operating portion 60 of the cam body 17 to open the detection switch 61 only when the air blowing direction of the fan main body 1 coincides with the oscillation center line S as shown in FIG. The detection switch 61 is connected in parallel to the vibration stop switch 51 of the vibration motor 15 as shown in FIG. This is done by the changeover switch 62 which is driven by the switch.
In this embodiment, the control section for stopping the swinging device 11 is performed by a changeover switch 62 and a detection switch 61.

The normally open switch 52 is turned on and the drive motor 26
When the detection switch 61 is driven, the changeover switch 62 is switched to the detection switch 61. Then, when the swinging device 11 oscillates and the oscillating center line S coincides with the air blowing direction of the fan main body 1, the detection switch 61 opens and the oscillating device 11 stops.

Therefore, the direction of the fan main body 1 is determined by the drive motor device 2.
5, the oscillation center line S has changed, which can be confirmed by adjusting the oscillation center and changing the direction of the fan main body 1.

Note that the drive motor device 11 and the swing device 11 are both driven until the direction of the fan main body 1 and the swing center line S coincide with each other due to the drive of the swing device 11, but the movement is for a short time. This does not pose much of a problem as an adjustment operation centered on the swing of the head.

It should be noted that the present invention is not limited to the above-mentioned implementation structures, but can be implemented by variously changing the structure of each part within a range that does not deviate from the objectives, functions, and effects of the present invention.

For example, the swinging device 11 is formed by a swinging motor 15, but it is also formed by a reduction gear device that meshes with the rotating shaft 7 of the electric motor 6, and the swinging device 11 is basically stopped by engaging and disengaging a clutch formed in the gear device. Alternatively, the engagement and disengagement may be performed using an electromagnetic clutch. Alternatively, the changeover control switch 50, the head vibration stop switch 51, the normally open switch 52, and the normally closed switch 53 may be formed by semiconductor switches such as triacs, and the control thereof may be performed by electronic control means such as a microcomputer. . When controlled by electronic control means, the swing stop switch 51 and normally closed switch 53 or changeover switch 62 are formed by a single semiconductor switch, and the detection switch 61 receives a signal by detecting the position of the swing device 11. It is sufficient as long as it outputs . As an alternative to the detection switch 61, there is a magnetic detection element such as a Hall element. Furthermore, the drive motor device 2
Although the rotation of the oscillation center adjusting body 20 by 5 is performed by the drive link 32, it can also be performed by a combination of a gear mechanism.

The fan main body 1 and the oscillation center adjustment body 20 do not need to be pivoted to the neck piece 4 as in the previous embodiment, and the cylindrical portion 21 is attached to the oscillation center adjustment body 20.
forming only a through hole for pivoting to the pivot shaft 5 or a stepped shaft formed on the outer periphery of the upper end of the bearing portion 19;
The cover plate 37 or the pivot shaft 5 may be used to prevent the pivot shaft 5 from falling off, and the pivot shaft 5 may be directly supported by the bearing portion 19.

(G) Effects of the Invention The present invention improves safety by using a drive motor device to adjust the center of swing of the electric fan, and also allows operation without malfunction due to assembly errors. It also has good properties. In addition, by stopping the oscillation movement when adjusting the oscillation center using the drive motor device, the operation can be performed by concentrating only on the movement of the fan itself by adjusting the oscillation center.

[Brief explanation of the drawing]

The figures show embodiments of the present invention, and FIGS. 1 to 8 show the first embodiment, and FIG. 1 is a cross-sectional view of the main part.
Figure 2 is a sectional view of the main parts of the neck piece, Figure 3 is an exploded perspective view of the neck piece, Figure 4 is an electrical circuit diagram,
5 to 8 are plan views showing different operating states of the neckpiece, FIGS. 9 to 11 show the second embodiment, and FIGS. 9 and 10 are schematic bottom views of the main parts.
FIG. 11 is an electrical circuit diagram. DESCRIPTION OF SYMBOLS 1... Fan main body, 4... Network piece, 5... Pivot, 6... Electric motor, 8... Air blower, 11... Shaking device, 15... Oscillating motor, 18... Oscillating link, 19
...Bearing part, 20... Oscillation center adjustment body, 21... Cylindrical part, 25... Drive motor device, 26... Drive motor.

Claims (1)

[Claims] 1. A main body of an electric fan having an electric motor and a blower blade;
A neck piece that pivots the axis of the fan main body, a swing center adjustment body that pivots around the axis as a rotation center,
A swing device that rotates the main body of the electric fan relative to the swing center adjustment body, a drive motor device that rotationally drives the swing center adjustment body with respect to the neck piece, and a swing motion caused by the swing device when the drive motor device is driven. An electric fan comprising a control unit for stopping the electric fan. 2. Claim 1, wherein the swinging device is formed by a swinging motor, and the control section is formed by a switch that cuts off power to the swinging device in conjunction with a drive switch of a drive motor device. The electric fan mentioned. 3 The oscillation device is formed by a oscillation motor, and the control section is interlocked with the drive switch of the drive motor device to switch the energization path to the oscillation device, and the oscillation device is located at the center of the oscillation. Claim 1 is formed by a detection switch that detects the
The electric fan mentioned in section.