JPH05288189A - Oscillating device for fan - Google Patents

Abstract

PURPOSE:To provide a fan designed to match the interior by disposing the oscillating motor of an electric motor below the electric motor so as to make the electric motor part thin and compact. CONSTITUTION:A fitting plate 3 provided at the lower part of an electric motor 1 is integrally provided with a supporting shaft 4 and an oscillating motor 5. The oscillating motor 5 is disposed below the electric motor 1, and the output shaft 6 of the oscillating motor 5 is turned downward so as to make the electric motor 1 part thin and compact and to make oscillating motion smooth. A receiving part 9b provided at a bearing cylinder 9 is fitted into a cutout part provided at the cylinder part 11 of a supporting means 10 so as to realize thinning without changing an oscillating angle and to reduce a gap causing backlash, thus making oscillation smooth. A connecting member 12 is integrally provided with a cylindrical protruding part 12b in the suspended state so as to facilitate the assembling work of oscillating mechanism and to suppress unnecessary force transmitted to the connecting member 12 for smooth oscillating motion.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a swinging device for a fan.

[0002]

2. Description of the Related Art Generally, a swinging device for a fan is used in which a swinging motor is arranged behind an electric motor that drives blades.

Conventionally, the swinging device of this type of fan is shown in FIG.
The structure shown in FIG.

As shown in the figure, a small mounting member 102 is fixed to the rear of an electric motor 101 for driving blades (not shown), a swing motor 103 is mounted on the mounting member 102, and an output shaft 103a is opened in the mounting member 102. It is projected downward from the part.

A crank plate 104 is fixed to the output shaft 103a by a pin 105. The electric motor 101 is supported by a support member 107 via a vertically extending support shaft 101a.

A bearing cylinder 109 is inserted into the cylindrical portion 108 of the support tool 107, and the bearing tool 109 is inserted into the bearing cylinder 109.
7 is inserted. A receiving portion 108a is provided so as to project from a side portion of the tubular portion 108 of the supporting member 107, and the receiving portion 108a and the crank plate 104 are connected by a connecting member 110.

In the above structure, by driving the swinging motor 103, the rotational force of the output shaft 103a is caused by the crank plate 104 to center on the receiving portion 108a.
Converted into 10 fan-shaped reciprocating motions, the electric motor 101 swings around the tubular portion 108 of the support member 107.

[0008]

In such a conventional swinging device for an electric fan, since the rear portion of the electric motor 101 projects, the thickness dimension becomes large, the blower portion becomes large, and the handling is inconvenient. There was a problem that we could not get a design that suits

Further, if the connecting device 110 is shortened to reduce the swinging mechanism, there is a problem that the swinging angle becomes large unless the center distance between the cylindrical portion and the receiving portion is shortened.

Further, when the connecting tool 110 is shortened, the work space for assembling becomes small, so that it becomes difficult to attach the connecting tool 110, and further, the deflection due to the minute gap of the connecting portion is enlarged and transmitted, and the swinging motion is performed. There was a problem that it could not be done smoothly.

The present invention is intended to solve the above problems, and it is a first object of the present invention to reduce the thickness and size of the electric motor portion and to make the swinging motion smooth.

The second purpose is to reduce the length of the connector,
It is intended to smoothly perform the swinging motion without expanding the swinging angle and reducing the gap that hinders the swinging motion.

The third purpose is to easily attach the connecting tool,
In addition, the flexure of the connecting tool should be kept small to allow smooth swinging movement.

[0014]

The first means for achieving the first object of the present invention is an electric motor for driving a blade, a mounting plate integrally formed on the electric motor, and a mounting plate mounted on the mounting plate. A supporting shaft provided and a swing motor mounted on the mounting plate below the electric motor, and an output shaft of the swing motor is directed in a direction parallel to the support shaft and in a direction opposite to the electric motor. It has a protruding structure.

A second means for achieving the second object is a tubular portion provided on the support, a notch provided on the tubular portion, a bearing tube inserted into the tubular portion, and It has a receiving portion projecting from the side portion of the bearing cylinder, a crank plate provided on the output shaft of the swing motor, and a connector for connecting the crank plate and the receiving portion, and the cutout portion of the cylindrical portion is provided with The structure according to claim 1, wherein the receiving portion of the bearing cylinder is fitted.

A third means for achieving the third object is to integrally form a tubular projection at one end of the connector, and to provide a hole with a large depth in the receiving portion of the bearing cylinder. 3. The structure according to claim 2, wherein the tubular projection of the connector is rotatably supported by the hole of the receiving portion.

[0017]

According to the present invention, by virtue of the construction of the first means described above, since the swing motor is arranged below the electric motor for rotating the blades, the thickness dimension becomes small, and the support shaft and the swing shaft swing on the mounting plate of an integral shape. Since the motor is fixed, the dimension between the support shaft and the output shaft of the swing motor can be maintained with respect to the driving force during swing.

Further, since the connecting portion can be directly attached to the bearing tube by the structure of the second means, the gap between the bearing tube and the tube portion of the supporting tool is erased in the relationship between the support shaft and the connecting tool. In addition to reducing the cause of sticking, the receiving portion of the bearing tube is close to the support shaft that is the center of swinging, so that the swinging motion is performed at a constant angle without expanding the swinging angle.

Further, according to the structure of the third means, since the cylindrical projection integrally provided on the connector is rotated while being pivotally supported by the hole having a large depth dimension, unnecessary force is exerted on the connector by the crank plate. Is transmitted, the posture of the connecting tool is properly maintained at the hole, and the swinging motion is smoothly performed.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

As shown in the drawing, an annular support frame 2 is fixed to the central outer periphery of an electric motor 1 that drives blades (not shown).

A mounting plate 3 is horizontally extended rearward from the lower portion of the support frame 2. A supporting shaft 4 is vertically provided at a front portion of the mounting plate 3 and a swinging motor is provided at a rear portion thereof. 5 is attached. Therefore, the swing motor 5 is installed below the electric motor 1 and has no accessory parts behind the electric motor 1. Further, the swing motor 5 projects an output shaft 6 in a direction parallel to the support shaft 4 and in a direction opposite to the electric motor 1, and a crank plate 7 is fixed to the output shaft 6 by a pin 8.

The support shaft 4 is inserted into a support hole 9a provided in a cylindrical bearing cylinder 9, and the bearing cylinder 9 is further supported by the support 1
The electric motor 1 is inserted into the cylindrical portion 11 of No. 0 and is rotatably supported by the support tool 10 via the support shaft 4. A receiving portion 9b is provided on the bearing cylinder 9 so as to project laterally, and a hole 12c provided in the receiving portion 9b and the crank plate 7 are connected by a connecting tool 12, and the connecting portions are rotatably connected to each other. ing. A front casing 13 is attached to the front portion of the support frame 2 of the electric motor 1, and a rear casing 14 is attached to the front casing 13 to cover the rear portion of the electric motor 1 and the swing mechanism.

The operation of the above-mentioned structure will be described below. First, by energizing the electric motor 1, the blades (not shown) are rotated to generate cool air. Next, by energizing the swing motor 5 fixed below the electric motor 1, the output shaft 6
The crank plate 7 fixed to is rotated, and the connecting tool 12 reciprocates in a fan shape around the hole 9c of the receiving portion 9b. Since the electric motor 1 is rotatably supported on the tubular portion 11 of the support tool 10 by the support shaft 4, the electric motor 1 moves to the left and right necks with respect to the support tool 10 with the fan-shaped reciprocating motion of the connecting tool 12. Perform shaking movements.

As described above, according to the first embodiment of the present invention, since the support shaft 4 and the swing motor 5 are both directly mounted on the mounting plate 3, the dimensional error at the time of mounting is reduced, and the neck is reduced. Deflection with respect to stress during shaking is reduced, and the distance between the support shaft 4 and the swing motor 5 can be maintained accurately, so that swing motion can be performed smoothly.

The output shaft 6 and the support shaft 4 of the swing motor 5
Are protruded in the same direction and the distance between the axes is reduced, the overall size of the swing mechanism is reduced, and the volume covered by the rear jacket 14 is also reduced. Therefore, the electric motor 1 including the swing mechanism is reduced.
The completed part can be made thinner and smaller.

Next, a second embodiment of the present invention will be described with reference to FIG.
-It demonstrates, referring FIG. The same components as those in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted.

As shown in the figure, the tubular portion 11 of the support tool 10 is provided with a notch portion 11a, and the receiving portion 9b of the bearing barrel 9 can be fitted therein.

In the above structure, first, the support shaft 4 is inserted into the support hole 9a of the bearing cylinder 9, and at the same time, the other end of the connector 12 whose one end is connected to the crank plate 7 is connected to the hole 9c of the receiving part 9b. .. Next, when the bearing tube 9 is inserted into the tube portion 11 of the support tool 10, the receiving portion 9b of the bearing tube 9 is fitted into the notch portion 11a of the tube portion 11 and mounted. Therefore, the bearing cylinder 9 is held substantially integrally with the support 10.

Further, as shown in FIG. 3, the center distance between the support hole 9a of the bearing cylinder 9 and the hole portion 9c can be reduced, and the connector 12 can be mounted in close proximity to the support shaft 4. Further, since the support hole 9a and the hole portion 9c are formed integrally with the bearing cylinder 9, the hole interval can be kept constant.

As described above, according to the second embodiment of the present invention, the bearing cylinder 9 is formed in the notch 11a in the cylinder 11 of the support 10.
Since the bearing cylinder 9 is fixed to the support 10 substantially integrally by fitting the receiving portion 9b that is protruded, the microscopic gap between the cylinder portion 11 and the bearing cylinder 9 is eliminated, and the bearing cylinder 9 Since the hole interval between the support hole 9a and the hole portion 9c is kept constant, the cause of bending and deformation during the swing motion is reduced, and the swing motion can be made smooth.

Further, by providing a cutout portion 11a in the tubular portion 11,
By projecting the receiving portion 9b integrally provided on the side of the bearing cylinder 9, the distance between the support hole 9a and the hole portion 9c can be reduced, and as shown in FIG. Even if the length of A1 is shortened to the length of A2, the length of the inter-support distance B1 can be shortened to B2 in proportion thereto, so that the swinging device can be downsized without changing the swinging angle. be able to.

Next, a third embodiment of the present invention will be described with reference to FIGS.
This will be described with reference to FIG. The same components as those in the first and second embodiments of the present invention are designated by the same reference numerals and detailed description thereof will be omitted.

As shown in the figure, a connecting hole 12a is provided at one end of the connecting tool 12, and the connecting portion is rotatably screwed to the eccentric portion 7a of the crank plate 7 with a stepped screw 15.

At the other end of the connector 12, a cylindrical protrusion 12b is provided.
Is integrally hung, a thick receiving portion 9b is projectingly provided on the bearing cylinder 9, and the cylindrical projecting portion 1 is provided in a hole portion 9c opened in the receiving portion 9b.
When 2b is inserted, the tip of the tubular projection 12b projects below the receiving portion 9b, and the groove 12 provided at the tip of the tubular projection 12b.
The E ring 16 is fitted in c to prevent it from coming off. Therefore, both ends of the connecting tool 12 are pivotally supported respectively.

When fixing the connecting tool 12 in the above structure, first, the connecting hole 12a of the connecting tool 12 is brought into close contact with the eccentric hole portion 7a of the crank plate 7, and the stepped screw 15 is used to fix the connecting hole. Next, the support shaft 4 is inserted into the support hole 9a of the bearing cylinder 9, and the tubular protrusion 12b of the connector 12 is received by the receiver 9.
b into the hole 9c, and the E-ring 16 is inserted into the cylindrical protrusion 12b.
The head swing mechanism can be easily assembled by fixing it to the tip of the.

Thus, according to the third embodiment of the present invention,
A tubular projection 12b is vertically provided integrally with one end of the connector 12, inserted into a hole 9c having a large depth, and held by the receiving portion 9b so that the rotational force is correctly transmitted.
(2) The connecting portion on the side of the receiving portion 9b has a degree of freedom restricted to only a rotational movement in the horizontal direction, and only the rotational force is correctly transmitted without transmitting an unnecessary twisting force to the swing motion, so that the swing motion can be smoothly performed. You can

Further, since the space of the mounting portion of the bearing cylinder 9 to the receiving portion 9b is small, the workability when mounting the connecting member 12 on the receiving portion 9b becomes difficult, but a cylinder fixed integrally to the connecting member 12 is provided. By inserting the protrusions 12b into the holes 9c and fixing the protrusions 12b in the lateral direction by the E-ring so as to prevent them from being pulled out, the workability of assembly can be greatly improved.

[0039]

As is apparent from the above embodiments, according to the present invention, the support shaft and the swing motor are integrally attached to the mounting plate fixed to the electric motor, and the swing motor is arranged under the electric motor. By projecting the output shaft of the swing motor parallel to the support shaft and in the opposite direction of the motor, the motor part including the swing mechanism can be made thinner and smaller, and the blower part is thinner, so handling is easier. This facilitates the external shape to match the interior of the room, maintains the accurate distance between the support shaft and the swing motor, and facilitates the swing motion.

Further, by fitting the protrusion provided on the bearing tube into the notch provided on the tube portion of the support, the gap between the support shaft and the connection portion of the connection tool is proportional to the reduction in the dimension of the connection tool. Can be shortened, and the swinging motion can be performed at the same swinging angle as before, the gap between the bearing cylinder and the cylinder part is eliminated, and the distance between the support hole of the bearing cylinder and the hole is Since it is maintained, the deflection and deformation of the swinging mechanism are reduced, and the swinging motion can be performed smoothly.

Further, a cylindrical protrusion is vertically provided at one end of the connecting tool,
By inserting a cylindrical projection into a hole with a large depth provided in the receiving part of the bearing cylinder and holding it with a degree of freedom only in the rotation direction, when the movement direction is changed by the crank plate and the connecting tool. It is possible to suppress the twisting force that occurs and to make a smooth swinging motion, and to overcome the difficulty of assembly work that occurs with a reduction in the working space, and to easily connect the bearing tube and the connecting tool. it can.

[Brief description of drawings]

FIG. 1 is a sectional view of a swinging device for an electric fan according to a first embodiment, a second embodiment and a third embodiment of the present invention.

FIG. 2 is an exploded perspective view of the same.

FIG. 3 (a) is a plan view of the main part showing the connection of a conventional connecting tool. (B) A plan view of the main part showing the connection of the connecting tool of the second embodiment of the present invention.

FIG. 4A is an operation explanatory view of a conventional fan swinging device. FIG. 4B is an operation explanatory view of the second embodiment of the present invention.

FIG. 5 is a perspective view of a conventional swinging device for a fan.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electric motor 3 Mounting plate 4 Support shaft 5 Swing motor 6 Output shaft 7 Crank plate 9 Bearing cylinder 9b Receiving part 9c Hole part 10 Supporting tool 11 Cylindrical part 11a Cutout part 12 Connecting tool

Claims (3)

[Claims] Claim: What is claimed is: 1. An electric motor for driving a blade, an integral mounting plate provided on the electric motor, a support shaft vertically provided on the mounting plate, and a swing motor mounted on the mounting plate below the electric motor. A fan swinging device for a fan, wherein an output shaft of the swinging motor projects in a direction parallel to the support shaft and in a direction opposite to the electric motor. 2. A tubular portion provided on a support, a cutout portion provided on the tubular portion, a bearing tube inserted into the tubular portion, a receiving portion projecting from a side portion of the bearing tube, and a neck. 2. A crank plate provided on an output shaft of a swing motor, and a connector for connecting the crank plate and the receiving portion, wherein the receiving portion of the bearing tube is fitted in the cutout portion of the tubular portion. Swinging device for electric fan. 3. A tubular projection is integrally formed at one end of the connecting tool,
3. The swinging of the fan according to claim 2, wherein the receiving portion of the bearing tube is provided with a hole having a large depth dimension, and the tubular projection of the connecting tool is rotatably supported by the hole of the receiving portion. apparatus.