JPH07243395A - Fan - Google Patents

Abstract

PURPOSE:To provide weight reduction by mounting a link mechanism which oscillates a support in the right/left direction against a neck piece by the rotation of an oscillating motor, and fitting a cam which changes the angle of a fan motor in the upward/downward direction against the support on the rotating shaft of the oscillating motor. CONSTITUTION:An oscillating mechanism 13 secures the output shaft 15 of an oscillating motor 12 with a bearing 16a, pivots the rear end of the lever 18 of a link mechanism 17 with a bearing 16b, and is provided with an oscillating element formed out of a cam element 16d which is inclined from a horizontal plane. A spherical element 20, a sliding element which is secured against a supporting piece 19 protruding from the rear of a blower motor 7, is fitted into the sliding groove 16c of the oscillating element. When the oscillating motor 12 rotates, the pivot 5 oscillates against a neck piece in the right/left direction. The cam element 16d rotates at a prescribed angle to an output shaft 15. The vertical position of the spherical element 20 and the sliding groove 16c of the cam element 16d changes with rotation, and goes upward and downward with a supporting point 24 centered, thereby being oscillated upward and downward. It is thus possible to blow air to a wide space.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fan having the functions of left and right swing and up and down swing.

[0002]

2. Description of the Related Art As prior art, Japanese Patent Laid-Open No. 1-28879
Japanese Patent Publication No. 9 discloses a means that includes an electric motor for vertical oscillation and an electric motor for horizontal oscillation, and realizes vertical oscillation and lateral oscillation. According to this, the fan can blow air over a wide space range.

[0003]

However, in the above-mentioned conventional example, since two motors, that is, a vertical swinging motor and a left and right swinging motor, are required, there is a drawback that the cost is increased and the weight is increased.

Therefore, an object of the present invention is to provide a fan having a simple structure and a large stirring effect without providing two kinds of electric motors for swinging.

[0005]

According to a first aspect of the present invention, there is provided a blower motor for rotationally driving a blower fan, a supporter for supporting the blower motor so that the blower motor can be moved up and down, and the supporter for left and right directions. In a fan equipped with a neck piece that is rotatably supported on the head and a link mechanism that swings the support tool to the left and right with respect to the neck piece by rotation of the head swing motor, the head swing motor is provided. A cam for changing the vertical angle of the blower motor with respect to the support is attached to the rotary shaft.

According to a second aspect of the present invention, in the first aspect of the present invention, a mounting angle switching mechanism for appropriately changing the tilt angle at which the cam is attached to the rotary shaft is provided.

[0007]

According to the first aspect of the present invention, the support tool is swung left and right with respect to the neck piece by the rotation of the swing motor.
The vertical angle of the blower motor can be changed by the cam mounted on the rotating shaft according to the rotation of the swing motor. Therefore,
Since a single swing motor can swing left and right and up and down, it is possible to blow air to a large space, reduce the weight, and simplify the swing mechanism.

According to the second aspect of the present invention, the inclination angle at which the cam is attached to the rotary shaft is appropriately changed by the attachment angle switching mechanism. As a result, in addition to horizontal swing, it is possible to easily switch between vertical swing and horizontal swing, which is very convenient.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a fan 1 showing a first embodiment of the present invention.
3 is a right side sectional view of a part of the fan main body 2 and a neck piece 3 as a support body, which is rotatably supported, and the neck piece 3 is supported on a support column 4 of a stand so as to be vertically inclined.

The electric fan 1 has an electric fan main body 2, a neck piece 3 as a support, and a stand on which a column 4 is projected.

The fan main body 2 is sandwiched between a support tool 6 as a support member mounted on an upper part of a pivot shaft 5 which is axially supported by a bearing hole formed in a neck piece 3, and both end portions of the support tool 6. As described above, a blower fan drive motor 7 (hereinafter referred to as blower motor 7) that is pivotally supported in the vertical direction, a blower blade 9 that is detachably attached to a rotation shaft 8 of the blower motor 7, and the blower fan A rear guard 10 and a front guard 11 that cover the blades 9, a swing motor 12 that is mounted behind the blower motor 7, and a swing mechanism 13 that swings the fan 1 into an elliptical shape described later by the swing motor 12. And a cup-shaped rear cover 14 that covers the blower motor 7 and the like.

As shown in FIG. 2, the swing mechanism 13 is a bearing 1 which fixes the output shaft 15 of the swing motor 12 and which opens upward.
6a and a bearing 16a are eccentrically open to the bottom, and a bearing 16b rotatably pivotally supports a rear end of a lever 18 of a link mechanism 17, which will be described later, and a sliding groove 16c along the outer peripheral edge, and There is provided a swing body 16 in which a cam body 16d whose diametrical direction is inclined at a predetermined angle with respect to the outer circumference of the bearing 16a from the horizontal plane is provided.

In the sliding groove 16c of the oscillating body 16, a spherical body 20 which is a sliding body fixed to a supporting piece 19 protruding from the rear of the blower motor 7 is slidably fitted, and
A rear end of a lever 18 of a link mechanism 17 is pivotally supported by a bearing 16b below the swing body 16. It should be noted that the spherical body 20 as a sliding body may be a slidable body, and may be a smooth surface.

Here, when the fan body 2 is moved to the right end and the left end, the diametrical direction of the cam body 16d is horizontal, and the fan body 2 is horizontal, and when the fan body 2 is moved to the front. , The cam body 16d is a sphere 20
The position of the part that slides with is configured to be the highest or the lowest.

As shown in FIG. 3, in the link mechanism 17, the tip of the above-mentioned lever 18 is pivotally supported by a drive link 21 which is provided below the support 6 and is pivotally supported by the pivot shaft 5. In addition, 23 has shown the hook of the electric power feeding cord.

First, when the oscillating motor 12 rotates, the oscillating body 16 of the oscillating mechanism 13 is interlockedly rotated, and as the oscillating body 16 rotates, the drive link 21 is rotated via the link mechanism 17. As a result, the pivot 5 rotates with respect to a bearing portion (not shown) of the neck piece 3. As a result, the fan body 2 swings in the left-right direction with respect to a base (not shown).

At this time, the rotation of the swing motor 12 causes the cam body 16d of the swing body 16 to move to the output shaft 15 of the swing motor 12.
It rotates with a predetermined inclination with respect to. By this,
The vertical position of the spherical body 20 extending from the blower motor 7 and the sliding groove 16c of the cam body 16d changes according to the rotation, and the spherical body 20
Moves up and down around the support point 24 of the support 6, and the fan body 2 swings up and down.

Here, the operation will be specifically described with reference to FIGS. 3 to 6. First, when the fan body 2 faces the right end with respect to the base, as shown in FIG. The 16 cam bodies 16d have a central height. As a result, from the relationship between the spherical body 20 fitted in the sliding groove 16c formed in the cam body 16d and the support point 24 of the support 6, the fan main body 2
Is at the center height, that is, at the position of point A shown in FIG.

Next, when the swing motor 12 is rotated, as shown in FIG.
When the sliding groove 16c of the cam body 16d is gradually lowered from the position of the right end (A) of the fan body 2 and the fan body 2 faces the front as shown in FIG. The position where the sliding groove 16c corresponds to the sphere 20 is the lowest. Therefore, since the rear of the blower motor 7 is lowered with respect to the support point 24, the front of the fan main body 2 is in the upward direction, and the position is B in FIG. 7.

Subsequently, when the swing motor 12 rotates, it becomes a position facing the left end as shown in FIG. 5, and at this time, the corresponding position between the sliding groove 16c of the cam body 16d and the spherical body 20 becomes the central height, Support points 24 and cam body 16 of the fan body 2
Due to the positional relationship between the sliding groove 16c of d and the sphere 20, the fan main body 2 comes to face the central height, which is the position C shown in FIG.

Further, when the fan main body 2 swings from the left end direction to the front direction, the cam body 1 is moved as shown in FIG.
Since the position corresponding to the sliding groove 16c of 6d and the sphere 20 rises, the rear of the fan main body 2 rises, and thus the fan main body 2
The front of is directed upward, and is at the position D shown in FIG.

As described above, according to the first embodiment, one swing motor causes horizontal swing and vertical swing, resulting in an elliptical center locus of the blower motor 7 and a large space. The air is blown to the area. Moreover, since two types of motors are not used, weight reduction and simplification of the mechanism can be achieved, which can contribute to cost reduction.

Next, a second embodiment of the present invention will be described with reference to FIGS.
2 will be described.

FIG. 8 is a longitudinal sectional view of a main part of an electric fan according to a second embodiment of the present invention. In the electric fan 1 shown in FIG. 1, the swing mechanism 13 performs so-called elliptic swing. The fan 1 shown in FIG. 8 has a configuration in which the swing mechanism 26 can appropriately switch between so-called elliptic swing and horizontal swing.

As shown in FIGS. 9 to 11, the oscillating mechanism 26 transmits the rotation of the oscillating motor 12 and the bearing 27a for fixing the output shaft 15 of the oscillating motor 12 and the rear of the lever 18 of the link mechanism 17. A bearing 27b pivotally supporting the end, a spring 27 and a sphere 30 as a switching mechanism inside the connecting body 27 for forming a switching mechanism 31 by loading both ends, and a sliding groove 28a at the outer peripheral edge with a plate thickness are formed. A through hole 28b into which the connecting body 27 is inserted from below is formed on the inner side, and the inner groove 28c for horizontal swing and the upper and lower necks are formed along the inner edge of the through hole 28b as shown in FIG. 12 or 13. Two swing inner grooves 28d are formed, and a cam body 28 in which the spherical body 30 of the switching mechanism 31 is slidably fitted in one of the inner grooves 28c, 28d and a spring formed in the connecting body 27. The sphere 30 urged by 29 Is fitted into the groove 28c or the inner groove 28d, the switching mechanism 31 to switch the vibration vertical neck and vibration elliptical neck appropriately
A spherical body 20 fixed to a support piece 19 extending from the rear of the blower motor 7 is fitted into the sliding groove 28a of the cam body 28 so as to be slidable.

Here, as shown in FIG. 12, the switching mechanism 31
When the spherical body 30 is fitted in the inner groove 28d, the sliding groove 28a of the cam body 28 is configured to face downward when the fan body 2 is in the front direction.

As a result, the front of the fan main body 2 is directed upward due to the relationship with the support points 24 of the support 6, and the fan main body 2 is at the center height at the left and right ends as described in the first embodiment, and the front Fan unit 2 because it is up or down
The locus of is similar to that of FIG.

Next, in the case of the elliptic swing shown in FIG.
When the front of the fan main body 2 is pushed downward, the rear of the fan main body 2 rises and the sphere 30 moves into the inner groove 28 as shown in FIG.
Fit from d into the inner groove 28c.

In this state, the sliding groove 28a of the cam body 28 with respect to the left and right swing of the fan main body 2 is in relation to the support point 24 of the support 6 of the fan main body 2, so that the fan main body 2 has a central height. Is configured to be.

Therefore, in this case, the center height is the same as that of the left end or the right end of the first embodiment. In the second embodiment, the left and right swing can always be performed at the center height.

In the first and second embodiments,
Although the swing motor is mounted on the support tool, the same operation as in the first and second embodiments is achieved by the configuration in which the swing motor is mounted on the blower motor and the sliding body is mounted on the support tool. It can be implemented similarly.

Further, in the second embodiment, the switching mechanism 31 is set to 2
Although there are steps, the inclination angle of the cam body with respect to the rotation axis is 3
It can also be configured to switch to more than one step. Further, the cam body is disc-shaped, and the sliding groove formed on the outer peripheral edge is a circular groove. However, for example, the entire outer peripheral edge of the cam body is greatly corrugated, instead of the disc-shaped circular groove. If the sliding groove is formed so as to strike and the sliding groove is also undulated correspondingly, the sliding body swings up and down corresponding to the large-wave sliding groove. Vertical oscillation different from the elliptic oscillation described in the example and the second embodiment can be performed.

[0033]

As described above, according to the first aspect of the present invention, the position of the cam changes in accordance with the rotation of the swing motor, the vertical direction of the blower motor can be changed, and the link mechanism is driven to move right and left. Since the head is oscillated, it is possible to blow air to a wide space by one oscillating motor, and it is possible to reduce the weight and the cost.

According to the second aspect of the present invention, the tilt angle of the cam with respect to the rotating shaft can be appropriately changed by the attachment angle switching mechanism, so that the range of left and right swing and vertical swing can be controlled by one swing motor. It is easy and convenient to switch the horizontal swing only.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of an essential part of an electric fan showing a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of a main part of the electric fan of FIG.

FIG. 3 is an explanatory view showing an operation when the electric fan of FIG. 1 moves toward a right end.

FIG. 4 is an explanatory diagram showing an operation when the electric fan of FIG. 1 moves in a front direction.

FIG. 5 is an explanatory diagram showing an operation when the electric fan of FIG. 1 moves toward the left end.

FIG. 6 is an explanatory view showing an operation when the electric fan of FIG. 1 moves in a front direction.

FIG. 7 is an explanatory diagram illustrating a locus of the center of the fan body of FIG.

FIG. 8 is a partial vertical cross-sectional view of a fan showing a second embodiment of the present invention.

9 is a perspective view of the connector of FIG.

FIG. 10 is a front view of the cam body shown in FIG.

FIG. 11 is a side view of the cam body shown in FIG.

FIG. 12 is a cross-sectional view of an essential part showing the first action of the electric fan of FIG.

13 is a cross-sectional view of a main part showing a second action of the electric fan of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fan 2 Fan main body 3 Neck piece 4 Strut 5 Axis 6 Support tool 7 Blower motor 12 Swing motor 12 Swing mechanism 16 Swing body 16a, 16b Bearing 16c Sliding groove 16d Cam body 17 Link mechanism 18 Lever 19 Support piece 20 Sphere 21 Drive link 22 Cam body 26 Swing mechanism 27 Connecting body 27a, 27b Bearing 28 Cam body 28a Sliding groove 28b Through hole 28c, 28d Inner groove 29 Spring 30 Sphere 31 Switching mechanism

Claims (2)

[Claims] 1. A blower motor for rotationally driving a blower fan, a support tool for supporting the blower motor so as to be vertically movable, and a neck piece for supporting the support tool so as to be rotatable in the left-right direction. A fan having a link mechanism for swinging the support tool to the left and right with respect to the neck piece by rotation of a swing motor, wherein a fan for the support tool is attached to a rotation shaft of the swing motor. A fan equipped with a cam that can change the vertical angle of the switch. 2. The electric fan according to claim 1, further comprising a mounting angle switching mechanism that appropriately changes a tilt angle at which the cam is attached to the rotation shaft.