JPH1113683A - Blower - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate assembly with good accuracy, and prevent generation of a creak by providing a bearing part inserted in the outer peripheral surface of a fan flame cylindrical part enclosed a centrifugal fan motor shaft, and a cylindrical spacer part which is rotatably arranged on the outer wheel surface of the bearing part, and for extrapolating a cylindrical hole of the shaft side surface part of a casing part. SOLUTION: A shaft 201a of a motor 201 for a centrifugal fan 7 is inserted and fixed to a shaft hole arranged on a center part of a both end surfaces of a centrifugal fan 7, an inner wheel of a bearing 305 is engaged with an outer peripheral surface of a fan flame cylindrical part 201c of the motor 201, and an inner surface of a cylindrical spacer 300 is rotatably engaged with an outer wheel surface of the bearing 305. A tip end part of one cylindrical hole 3a of both end surfaces of a casing 3 is fitted until abutting on the projection 300a of the spacer 300 while sliding to an outer peripheral surface of the spacer 300. A cylindrical separating member 401, a step cylindrical connecting member 403, and a bearing 400 are inserted into the other cylindrical hole 3b side, and a supporting member 70 is fixed. The number of parts is reduced, assembly is carried out simply with a good accuracy, and generation of creak is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blower for rotating a centrifugal fan and blowing air while swinging a casing.

[0002]

2. Description of the Related Art A conventional blower will be described with reference to FIGS. 4 is an overall perspective view, FIG. 5 is an exploded perspective view of the centrifugal fan, its casing, and its swinging portion, and FIG. 6 is a sectional view of the centrifugal fan, the casing, and its swinging portion. As shown in FIGS. 4, 5, and 6, the conventional blower 10 includes two casings 3, 5,
The centrifugal fans 7, 9 built in the casings 3, 5 and a swing unit 20 for rotating the centrifugal fans 7, 9 and swinging the casings 3, 5 are provided. Note that the swing part 20 is surrounded by a cover.

[0003] The swinging part 20 is composed of the centrifugal fan 7 and the shaft 3.
0a, and a reduction gear connected to a gear (not shown) attached to a shaft 30a of the single-phase motor, and rotational force from the reduction gear is applied to the crank 55 and the rod 60. A transmission drive unit 33 for transmitting the power, a substantially U-shape, and each of the U-shaped side plate portions has projections 41c and 41d, and the projections 41c and 41d are formed through the rod hole 60c. 5, a connecting plate 41 for transmitting the oscillating motion from the transmission driving unit 33 to the casings 3, 5; and a single-phase loosely inserted into the notches 41a, 41b of the connecting plate 41. A bearing 53 inserted into the outer periphery of the fan frame cylindrical portion including the shaft 30a of the motor 30 for smoothing the swinging motion of the casings 3, 5 and the bearing 53 is housed. Cylinder bore 3 provided in the direction side portion
a, a metallic concave spacer 50 into which 5a is inserted
And is composed of the main parts.

The rod-shaped projection 41c of the connecting plate 41 is inserted into the hole 3c of the casing 3 through the rod hole 60c, and the rod-shaped projection 41d of the connecting plate 41 is
In the hole 5b. Also, the shaft 30 of the single-phase motor 30
a is engaged and fixed to a shaft hole 7a at an end of the centrifugal fan 7 and a shaft hole 7b at an end of the centrifugal fan 7 through a cylindrical hole 3a provided on one of both end surfaces of the casing 3. The casing 3 is rotatably supported by a cylindrical hole 3b provided on the other of the two end faces.

[0005] The operation of the blower 10 configured as described above will be described with reference to FIGS. 4 and 5. First, when a single-phase power supply (not shown) is turned on, the single-phase motor 30 is driven,
Since the fan 7 rotates, air is sucked in from the inlets of the casings 3 and 5 and is blown out from the outlet. At this time, the reduction gear of the transmission drive unit 33 connected to the gear (not shown) attached to the shaft 30a also rotates, and the rotational force of the reduction gear is changed into a swinging motion by the crank 55, and the rod 60 and the connecting plate are connected. Since the casing 3 and 5 are transmitted to the casings 3 and 5 through 41, the casings 3 and 5 blow out air from their outlets while swinging.

[0006]

In the conventional blower constructed as described above, the centrifugal fan is rotated by the rotation of the shaft of the single-phase motor, and the rotation of the shaft is transmitted to the swinging unit via the gear. It transmits the light, converts it into oscillating motion, and oscillates the casing supported by the metallic spacer via the connecting plate. If mutual positional accuracy is not ensured, a so-called squeaking noise is generated between the metallic spacer and the hole of the casing, so that high processing and assembling properties are required, and there has been a problem that it becomes complicated.

Further, there is a problem that the number of driving components is large and squeak noise is easily generated.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has a small number of drive components, can be easily and accurately assembled to each other, does not easily generate squeaking noise, and is economical. And to provide a highly reliable blower.

[0009]

In the centrifugal apparatus according to the present invention, a motor section for rotating the centrifugal fan, a casing section surrounding the centrifugal fan and guiding the air blown by the centrifugal fan, and shaking the casing. A swing motor for driving the casing; and a crank unit mounted on a shaft of the drive motor unit and converting a rotational motion of the shaft into a swing motion. A transmission portion connected to one end of the crank portion and connected to a side portion of the casing portion to transmit a swinging motion to the casing portion; and a fan frame tube portion including a shaft of the centrifugal fan motor. A bearing portion inserted into the outer peripheral surface of the casing portion for smoothing the swinging motion of the casing portion;
It is rotatably attached to the outer ring surface of this bearing part,
And a cylindrical spacer portion into which a cylindrical hole provided on the shaft side surface portion of the casing portion is externally inserted.

[0010] A bearing attached to the outer peripheral surface of the other end of the shaft of the centrifugal fan 7 is provided between the other end of the casing and the centrifugal fan, and the bearing is inserted into the outer ring surface of the bearing. A cylindrical separating member for separating the rotation of the fan and the swinging operation of the casing portion; and a cylindrical hole inserted into the outer peripheral surface of the cylindrical separating member and provided on the other end side surface of the casing portion. A stepped cylinder coupling member to be inserted, a bearing attached to the inside of the cylinder of the stepped cylinder coupling member opposite to the insertion of the cylindrical separating member, and a shaft of a support member inserted into the inner ring surface of the bearing. , Is provided.

[0011] Further, the motor portion of the centrifugal fan comprises a double-shaft motor, and the shaft of the double-shaft motor includes the centrifugal fan and the casing portion. Is transmitted to the other casing part via the connecting plate.

Further, the cylindrical spacer portion is formed of a polymer material such as a resin.

[0013] Further, a projection is provided on the outer peripheral surface of the cylindrical spacer portion.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. First Embodiment A first embodiment of the present invention will be described with reference to FIGS. 1 is an exploded perspective view of the drive unit, FIG. 2 is a plan view of the drive unit of FIG. 1, and FIG. 3 is a sectional view of FIG. Further, the same reference numerals as those in the drawings and those in the conventional drawings denote the same components, and thus the description thereof will be omitted.

As shown in FIGS. 1 to 3, a centrifugal fan motor 201 serving as a first single-phase motor for rotating the centrifugal fan 7 and a part of the centrifugal fan 7 The casing 3 has a suction port for guiding air to be sucked in and blown out, and a casing 3 having a blowout port for blowing out, and a swing part 200 for swinging the casing 3.

The swing unit 200 includes a drive motor 205 for driving the casing 3 and a drive motor 2 for driving the casing 3.
The crank 207 is attached to the shaft 05 and converts the rotational motion of the shaft into a swinging motion. The crank 207 is engaged with one end of the crank 207 and is connected to the side of the casing 3 so that the casing 3 swings. , A L-shaped mounting plate 250 for fixing the drive motor 205, and a shaft 20 of the centrifugal fan motor 201.
A bearing 305 which is inserted into the outer peripheral surface of the fan frame tubular portion 201c containing the inner casing 1a and smoothens the swinging motion of the casing 3; And a cylindrical spacer 300 inserted into the outer peripheral surface thereof.

When the axial width of the centrifugal fan 7 is long,
The shaft 201a of the centrifugal fan motor 201 is
Shaft hole 7 provided at the center (center) of both end surfaces of the impeller
a and b are inserted and fixed. Bearings are provided on the side of the shaft hole 7b in order to smoothly perform the swinging movement of the casing 3 and the rotating movement of the centrifugal fan 7, respectively. Means for separating the movement are provided. However, when the axial width of the centrifugal fan 7 is short and a cantilever structure may be used, these parts and means are unnecessary.

A projection 300a is provided on the outer ring surface of the cylindrical spacer 300, and the casing 300
When the cylindrical end face of the cylindrical hole 3a is brought into contact, the assembling property is improved.

The cylindrical spacer 300 is preferably formed of a polymer material such as resin or rubber from the viewpoint of noise reduction.

When the casing and the centrifugal fan are provided on both sides of the centrifugal fan motor 201, a connecting plate 215 for connecting the casing 3 and the casing 5 is provided. It can be swung by the drive motor 205.

The general assembly of the driving unit 200 configured as described above will be described. First, the shaft 201a of the centrifugal fan motor 201 is inserted into and fixed to the shaft holes 7a and 7b at the center of both end surfaces of the centrifugal fan 7. Next, the inner ring of the bearing 305 is engaged with the outer peripheral surface of the fan frame cylindrical portion 201c of the centrifugal fan motor 201,
The inner surface of the cylindrical spacer 300 is rotatably engaged with the outer ring surface of the above. Next, while sliding on the outer peripheral surface of the cylindrical spacer 300, the distal end of the cylindrical hole 3a provided on one of both end surfaces of the casing 3 is inserted until the distal end of the cylindrical hole 3a comes into contact with the projection 300a of the cylindrical spacer 300. Combine. (Note that
If there is no projection 300a, insert it to a predetermined position. )

Next, a bearing is mounted on the outer peripheral surface of the other end of the shaft of the centrifugal fan 7 also on the side of the cylindrical hole 3b provided on the other end surface of the casing 3 and is rotatable on the outer ring surface of the mounted bearing. And a cylindrical separating member 401 for separating the rotation of the centrifugal fan 7 and the swinging operation of the casing 3
Is inserted on the outer peripheral surface of the inserted cylindrical separating member 401, and the stepped cylindrical coupling member 40 corresponding to the cylindrical spacer 300 is inserted.
3 is inserted and fitted, and the stepped connecting member 403 fitted and inserted
The bearing 400 is rotatably inserted into the inside of the cylinder on the opposite side of the insertion, and after the shaft of the support member 70 is inserted into the inner ring surface of the bearing, the support member 70 is fixed.

The operation assembled as described above will be described with reference to FIGS. First, when a single-phase power supply (not shown) is turned on, the single-phase motor 30 is driven and the fan 7 rotates, so that air is sucked from the inlet of the casing 3 and blown out from the outlet. Also, at this time, the drive motor 205 is also driven, so that the rotational movement is changed to a swinging movement by the crank 207 connected to the shaft, and the rod 2
Since the casing 3 is transmitted to the casing 3 via the connection plate 11 and the connecting plate 215, the casing 3 swings and blows air from its outlet.

[0024]

Since the present invention is configured as described above, it has the following effects.

A motor section for rotatingly driving the centrifugal fan;
A casing section surrounding the centrifugal fan, guiding the wind blown by the centrifugal fan, and a swing section swinging the casing, wherein the swing section drives the casing, a drive motor section, A crank attached to the shaft of the drive motor and converting the rotational motion of the shaft into oscillating motion, connected to one end of the crank and connected to the side of the casing to form the casing. A transmitting portion for transmitting the oscillating motion, and a bearing portion inserted into the outer peripheral surface of the fan frame tube portion including the shaft of the centrifugal fan motor to smooth the oscillating motion of the casing portion;
It is rotatably attached to the outer ring surface of this bearing part,
And a cylindrical spacer portion into which a cylindrical hole 3a provided in a shaft side surface portion of the casing portion is externally inserted, and the centrifugal fan is rotated and the casing is oscillated. And the mutual position can be easily and accurately assembled, so that an assembling property is good, squeak noise is hardly generated, and an economical and highly reliable blower can be obtained.

Further, a bearing mounted on the outer peripheral surface of the other end of the shaft of the centrifugal fan 7 is provided between the other end of the casing and the centrifugal fan, and the bearing is inserted into the outer ring surface of the bearing. A cylindrical separating member for separating the rotation of the fan 7 and the swinging operation of the casing portion; and a cylindrical hole 3b inserted into the outer peripheral surface of the cylindrical separating member and provided on the other side surface of the casing portion. Has a stepped cylindrical coupling member into which is inserted externally, a bearing inserted into the cylinder on the opposite side of the cylindrical separating member of the stepped cylindrical coupling member, and a shaft inserted into the inner ring surface of the bearing. Since the support member is provided, even if the impeller becomes long in the axial direction, the impeller can be smoothly rotated. Therefore, a squeak sound is hardly generated, and a highly reliable blower can be obtained.

The motor of the centrifugal fan comprises a double shaft motor, and the shaft of the double shaft motor includes the centrifugal fan and the casing. Is transmitted to the other casing portion via the connecting plate, so that a squeak sound is hardly generated, and an economical blower can be obtained.

Further, since the cylindrical spacer portion is formed of a polymer material such as a resin, a highly reliable blower in which generation of noise is prevented can be obtained.

Further, since the projections are provided on the outer peripheral surface of the cylindrical spacer, a blower having good assemblability can be obtained.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of the entire first embodiment of the present invention.

FIG. 2 is a front view of a swing unit according to the first embodiment of the present invention.

FIG. 3 is a cross-sectional view of a swing portion according to the first embodiment of the present invention.

FIG. 4 is a perspective view of a conventional whole.

FIG. 5 is an exploded perspective view of a conventional centrifugal fan, a casing thereof, and a swinging part thereof.

FIG. 6 is a cross-sectional view of a conventional centrifugal fan, a casing, and a swinging part thereof.

[Explanation of symbols]

3 casing, 7 centrifugal fan, 201 motor for centrifugal fan (first single-phase motor), 201a axis,
201c frame, 205 drive motor, 20
7 crank, 211 rod, 215 connecting plate,
300 cylindrical spacer, 300a protrusion, 3
05 bearing, 400 bearing, 401
Cylindrical separating member, 403 Stepped tube connecting member.

Claims (5)

[Claims] A motor for rotating a centrifugal fan, a casing surrounding the centrifugal fan and guiding the wind blown by the centrifugal fan, and a rocking portion for rocking the casing. A drive motor unit that drives the casing, a crank unit that is attached to a shaft of the drive motor unit, converts a rotational movement of the shaft into a swinging motion, and is connected to one end of the crank unit. A transmission portion that is connected to the side surface portion of the casing portion and transmits a swinging motion to the casing portion; and a transmission portion that is inserted into an outer peripheral surface of a fan frame tube portion including a shaft of the centrifugal fan motor, and swings the casing portion. A bearing part for smooth movement,
It is rotatably attached to the outer ring surface of this bearing part,
A blower, comprising: a cylindrical spacer portion into which a cylindrical hole provided on a shaft side surface portion of the casing portion is externally inserted. 2. A bearing mounted on the outer peripheral surface of the other end of the shaft of the centrifugal fan 7 between the other end of the casing and the centrifugal fan, and inserted into the outer ring surface of the bearing, A cylindrical separating member for separating the rotation of the fan and the swinging operation of the casing portion; and a cylindrical hole inserted into the outer peripheral surface of the cylindrical separating member and provided on the other end side surface of the casing portion. A support member having a stepped cylinder coupling member to be inserted, a bearing attached to the inner side of the cylinder of the stepped cylinder coupling member opposite to the cylindrical separation member, and a shaft inserted into the inner ring surface of the bearing. When,
The blower according to claim 1, further comprising: 3. The centrifugal fan according to claim 1, wherein a motor portion of the centrifugal fan comprises a double-shaft motor, and the shaft of the double-shaft motor includes the centrifugal fan and the casing portion. 3. The blower according to claim 1, wherein the swinging motion transmitted to the second casing is transmitted to the other casing via the connecting plate. 4. 4. The blower according to claim 1, wherein said cylindrical spacer portion is formed of a polymer material such as a resin. 5. The blower according to claim 1, wherein a protrusion is provided on an outer peripheral surface of the cylindrical spacer.