JP2001231215A - Fixing apparatus of fan motor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce noise caused by vibrations of a fan motor. SOLUTION: This fixing apparatus consists of a fan motor 11 having bearing parts 11a which support axially a rotating shaft on both sides, stepped cylindrical caps 12 constituted of a large diameter part and a small diameter part, annular vibration-proof members 13, and a fan casing 14 which is provided with holding parts 14b for holding the vibration-members 13 on both sides and accommodates the fan motor 11. The large diameter part side of the cap 12 is stuck to the bearing part 11a of the fan motor 11, and the vibration-proof member 13 is disposed on the outer periphery of the small diameter part. The vibration-proof member 13 is held by the holding part 14b of the fan casing 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fan motor mounting device for an air conditioner.

[0002]

2. Description of the Related Art An air conditioner indoor unit is, for example, shown in FIGS.
As shown in FIG. 1, the main body 1 includes a base 2, a front panel 3 attached to the base 2, and a front grill 4 detachably attached to the front panel 3. An air passage 8 connecting the suction ports 5a and 5b in the main body 1 and the outlet 7
, A heat exchanger 9, a blower fan 10 and the like are arranged. A fan motor 11 for driving the blower fan 10 has an annular vibration isolating member A attached to the outer periphery of a bearing 11 a thereof, and a base 2.
Casing 1 having an open upper surface formed integrally with
4 are housed so as to be in close contact with holding portions 14b formed at both ends.

[0003]

However, energy saving and miniaturization of air conditioners are also urgently required, and fan motors are changed from AC motors to DC motors, and other members are also miniaturized. . However,
Since the outer diameter of the bearing part of the DC motor is larger than that of the AC motor, when a conventional type (when using the AC motor) fan casing is used, the space between the holding part and the bearing part of the fan motor is limited. There is no room, and a vibration isolating member having a sufficient thickness cannot be used, so that the vibration isolating effect is reduced and noise may be generated. Therefore, an object of the present invention is to provide a fan motor mounting device that solves these problems.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has a fan motor having a projecting bearing portion for supporting a rotary shaft on both sides, a large-diameter portion, and a fan motor. A stepped cylindrical cap having a small diameter portion, an annular vibration isolating member, and a fan casing accommodating the fan motor including holding portions for holding the vibration isolating member on both sides, and a large diameter of the cap. While the part side is attached to the bearing part of the fan motor, the vibration isolating member is mounted on the outer periphery of the small diameter part, and the vibration isolating member is held by the holding part of the fan casing.

Further, the cap is made of an elastic material.

Further, the vibration damping member is made of elastic rubber or resin.

Further, the outer diameter of the small diameter portion of the cap is made smaller than the outer diameter of the bearing portion of the fan motor.

[0008] Further, the cap is provided with a notch in the axial direction from the open end of the large diameter portion.

Further, a projection is provided on the inner periphery of the large diameter portion of the cap so as to abut against a bearing portion of the fan motor.

[0010] Further, a rib is provided on the inner periphery of the large diameter portion of the cap in the axial direction, the rib being in contact with the bearing portion of the fan motor.

[0011] Further, a plurality of the protrusions and the ribs are arranged at substantially equal angles.

[0012]

FIG. 1 is a block diagram showing an embodiment of the present invention.
This will be described with reference to FIG. FIG. 1 shows the inside and outside of an indoor unit, and 1 is a main body. This main body 1 has a base 2 and
The front panel 3 is attached to the base 2 and the front grill 4 is detachably attached to the front panel 3. A heat exchanger 9, a blower fan 10, and the like are disposed in an air passage 8 in the main body 1 that connects the inlets 5 a and 5 b and an outlet 7 having a wind direction adjusting plate 6.
The fan motor 11 for driving the motor 0 has a cap 12 made of a stepped cylindrical elastic material having a large-diameter portion and a small-diameter portion attached to the outer periphery of a bearing portion 11a (see FIG. 3). A vibration isolating member 13 made of rubber or resin having annular elasticity is attached to the outer periphery of the small-diameter portion.

As shown in FIGS. 2 and 3, the fan motor 11 is inserted from above a fan casing 14 which is formed integrally with the base 2 and has an open upper surface.
5 is an insertion hole 1 provided at the bottom of the fan casing 14.
The vibration isolating member 13 is led out of the fan casing 4a and housed so that the vibration isolating members 13 are in close contact with holding portions 14b formed at both ends of the fan casing 14.

As shown in FIGS. 3 and 4, the cap 12 attached to the outer periphery of the bearing 11a
And a small-diameter portion 12b coaxially and integrally formed on the side of the large-diameter portion 12a. The rotation shaft 11b of the fan motor 11 is rotatably mounted on the small-diameter portion 12b. An insertion hole 12c to be inserted is provided. In addition,
The outer diameter of the small diameter portion 12b is smaller than the outer diameter of the bearing 11a of the fan motor 11.

On the other hand, a hole 13a is provided at the center of the vibration isolating member 13 so as to be attached to the small-diameter portion 12b of the cap 12, so that the cap 12 is indirectly supported.

The shape of the cap 12 is not limited to the shape shown in FIG. 4A. For example, as shown in FIG. 4C, a notch 12d is formed in the axial direction from the open end of the large diameter portion 12a. With the configuration provided, the fan motor 11
Can be easily attached to the bearing portion 11a.

FIG. 4D shows a bearing 11a of the fan motor 11 on the inner periphery of the large diameter portion 12a.
4E are provided at three places at substantially equal angles, and those shown in FIG. 4E are provided on the inner periphery of the large-diameter portion 12a and on the bearing 11a of the fan motor 11. Although the three ribs 12f that contact each other are provided in the axial direction at substantially the same angle, the contact area with the bearing 11a is very small in such a configuration, and the transmission of vibration to the vibration isolator 13 is reduced. .

[0018]

According to the configuration described above,
Even in the case of a fan motor of a type having a large bearing portion, a vibration isolating member having a thickness sufficient to absorb the vibration of the fan motor exists between the bearing portion and the holding portion of the fan casing. The anti-vibration member comprises a stepped cylindrical cap to be attached to the bearing portion of the fan motor, and an annular anti-vibration member to be attached to the small diameter portion of the cap,
Since the small diameter portion is smaller in diameter than the bearing portion of the fan motor, the vibration to the fan casing is hardly transmitted, and the effect of preventing noise generation is large.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the inside and outside of an indoor unit according to the present invention and a conventional example.

FIG. 2 is a perspective view of a main part showing one embodiment of the present invention.

FIG. 3 is a side view of a main part showing one embodiment of the present invention.

FIG. 4 is a perspective view showing an anti-vibration member of the present invention.

FIG. 5 is a side view of a main part showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Base 3 Front panel 4 Front grille 5a, 5b Suction port 6 Wind direction adjustment plate 7 Outlet 8 Air passage 9 Heat exchanger 10 Blowing fan 11 Fan motor 11a Bearing part 11b Rotating shaft 12 Cap 12a Large diameter part 12b Small diameter part 12c insertion hole 12d notch 12e projection 12f rib 13 vibration isolating member 13a hole 14 fan casing 14a insertion hole 14b holding part 15 lead wire

Claims (8)

[Claims] 1. A fan motor having protruding bearing portions for supporting a rotating shaft on both sides, a stepped cylindrical cap having a large-diameter portion and a small-diameter portion, an annular vibration isolator, and both sides. A fan casing for holding the fan motor, comprising a holding portion for holding the vibration isolating member, while attaching a large-diameter portion side of the cap to a bearing portion of the fan motor,
A mounting apparatus for a fan motor, wherein the vibration isolating member is mounted on an outer periphery of the small diameter portion, and the vibration isolating member is held by a holding portion of the fan casing. 2. The cap according to claim 1, wherein the cap is made of an elastic material.
A mounting device for the fan motor according to the above. 3. The fan motor mounting device according to claim 1, wherein said vibration isolating member is made of rubber or resin having elasticity. 4. The fan motor mounting device according to claim 1, wherein an outer diameter of the small diameter portion of the cap is smaller than an outer diameter of a bearing portion of the fan motor. 5. The fan motor mounting device according to claim 1, wherein a notch is provided in an axial direction from an opening end of the large diameter portion of the cap. 6. The fan motor mounting device according to claim 1, wherein a projection is provided on an inner periphery of the large diameter portion of the cap to contact a bearing portion of the fan motor. 7. The fan motor mounting device according to claim 1, wherein a rib abutting on a bearing portion of the fan motor is provided on an inner periphery of the large diameter portion of the cap in an axial direction. 8. The fan motor mounting device according to claim 6, wherein a plurality of said projections and said ribs are arranged at substantially equal angles.