JPH09285068A - Attachment device of fan motor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent vibration isolation members from falling-off from a bearing part when a fan motor is put into a fan casing. SOLUTION: A fan motor 10 has bearing units 10a which support a rotary shaft are made to protrude from both its sides. A fan casing 12 has holding parts 12a which correspond to the bearing units 10a of the fan motor 10. Annular vibration isolation members 11 are attached to the outer circumferences of the bearing units 10a. Annular protrusions 11a are provided on the surfaces of the holding parts 12a perpendicular to the axial direction.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art A conventional air conditioner has, for example, FIGS.
As shown in FIG. 1, the main body 1 is composed of 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 7 connecting the suction ports 5a, 5b in the main body 1 and the air outlet 6
, A heat exchanger 8 and a blower fan 9 are arranged. A fan motor 10 for driving the blower fan 9 is formed integrally with the base 2 by attaching an annular vibration isolating member 11 to the outer periphery of its bearing portion 10a. The fan casing 12 having the opened upper surface is housed so as to be in close contact with holding portions formed at both ends of the fan casing 12.

In the case of a fan motor having a long protruding length of the bearing portion 10a, the annular inner surface of the vibration isolating member is sufficiently adhered to the outer periphery of the bearing portion 10a so that the vibration isolating member is housed when the fan motor 10 is housed in the fan casing 12. It does not come off. However, in the case of a fan motor in which the protruding length of the bearing portion 10a is short, it is not sufficiently adhered, so when the fan motor is housed, the outer peripheral edge of the vibration isolating member 11 hits the upper wall end of the holding portion,
The anti-vibration member may come off from the bearing portion, the vibration of the fan motor is transmitted to the fan casing 12, and the base 2
There was a problem in that it was transmitted to and generated noise.

[0004]

SUMMARY OF THE INVENTION In view of the above problems, in the present invention, a fan motor capable of preventing the vibration isolating member from coming off the bearing portion even when the bearing portion having a short protruding length is accommodated. The purpose is to provide a mounting device.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and corresponds to a fan motor in which bearing parts for axially supporting a rotary shaft are formed on both sides, and a bearing part of the fan motor. In a fan motor mounting device including a fan casing having a holding portion and an annular vibration isolating member attached to the outer periphery of the bearing portion, the vibration isolating member is orthogonal to the axis of the holding portion. An annular projection is provided on the surface facing the wall surface. Further, the width of the vibration isolating member is set to be twice the protruding length of the bearing portion or more. The vibration isolating member is made of rubber.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION A fan motor is housed in a fan casing by providing an annular projection on the surface of the vibration isolator that faces the wall surface of the holding portion of the fan casing that is orthogonal to the axis. At this time, the vibration damping member serves as a fan motor mounting device that can prevent the vibration damping member from coming off the bearing portion.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 shows the inside and outside of an indoor unit. Reference numeral 1 is a main body, the main body 1 is a base 2, a front panel 3 attached to the base 2, and a front grill detachably attached to the front panel 3. 4 and. A heat exchanger 8, a blower fan 9, etc. are arranged in an air passage 7 connecting the suction ports 5a, 5b in the main body 1 and the blowout port 6, and the blower fan 9
The fan motor 10 for driving the motor is constructed such that an annular vibration isolating member 11 is attached to the outer periphery of its bearing portion 10a.

As shown in FIGS. 2 to 4, the fan motor 10 is inserted from above a fan casing 12 which is integrally formed with the base 2 and has an opening on the upper surface, and a lead wire 13 is provided at the bottom of the fan casing 12. The fan casing 12 is housed in such a manner that it is led out through the formed insertion hole 12b and comes into close contact with holding portions 12a formed at both ends of the fan casing 12.

The ring-shaped vibration isolating member 11 attached to the outer periphery of the bearing portion 10a has a ring-shaped protrusion 11a along the ring-shaped inner surface on the surface facing the wall surface orthogonal to the axis of the holding portion 12a. And a ring-shaped protrusion 11b having the same shape is formed symmetrically on the surface on the fan motor main body side. Also, protrusion 11
The a and 11b are formed integrally with the vibration damping member 11. Especially when the protruding length of the bearing part 10a is short,
Since the portion that comes into close contact with 11 becomes shallow, the entire width a of the vibration isolating member 11 is ensured as in the conventional case, and then the protrusion 11a is provided. The relationship between the width a of the vibration isolating member 11 and the protrusion length b of the bearing portion 10a is preferably that the width a is at least twice the protrusion length. Further, the vibration isolating member 11 is made of rubber.

With the above construction, when the fan motor is housed in the fan casing, strong contact between the wall surface of the holding portion 12a and the vibration isolating member 11 is prevented, and the bearing portion 10 is prevented.
The fan motor mounting device is capable of preventing the vibration isolating member 11 from being separated from a.

[0011]

With the above-described structure, when the fan motor is housed in the fan casing, it is possible to prevent the vibration isolating member from coming off the bearing portion, so that the vibration of the fan motor is transmitted to the fan casing 12. The noise is not transmitted to the base 2 and is further transmitted to the base 2.

[Brief description of 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 an essential part showing an embodiment of the present invention.

FIG. 3 is a side view of an essential part showing an embodiment of the present invention.

FIG. 4 is a cross-sectional view of a vibration damping member of the present invention.

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

[Explanation of symbols]

 1 Main body 2 Base 3 Front panel 4 Front grill 5a, 5b Suction port 6 Air outlet 7 Air passage 8 Heat exchanger 9 Blower fan 10 Fan motor 10a Bearing part 11 Anti-vibration member 11a Projection part 12 Fan casing 12a Holding part 12b Insertion hole 13 lead wire

Claims (3)

[Claims] 1. A fan motor, which has protruding bearing bearings for supporting a rotary shaft on both sides, a fan casing having a holding portion corresponding to the bearing portion of the fan motor, and an outer periphery of the bearing portion. In a mounting device for a fan motor having an annular vibration isolating member, an annular protrusion is provided on a surface of the vibration isolating member facing a wall surface orthogonal to the axis of the holding portion. Fan motor mounting device. 2. The fan motor mounting device according to claim 1, wherein the width of the vibration isolating member is at least twice the protruding length of the bearing portion. 3. The fan motor mounting device according to claim 1, wherein the vibration isolation member is made of rubber.