JP2002112501A - Motor-mounting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress motor vibration that is the source of noise, and to reduce the noise by changing the structure and mounting position of a vibration- isolating member. SOLUTION: Ring-shaped members 13 are fixed to the circumferential ends of a motor 10, that drives a cross-flow fan 8 to reduce vibration that arises from the sides of the motor 10. Inside a support frame 12 that houses and supports the motor 10, a first vibration-isolating member 14 is provided, that is formed almost in the same shape as the support frame 12. A second vibration- isolating member 15 is provided between the right and left positions inside the vibration-isolating member 14 and the ring-shaped members 13 on the motor 10 side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motor mounting device, and more particularly to a structure of a vibration isolating member provided between a blower motor of an air conditioner and a support for housing and supporting the motor.

[0002]

2. Description of the Related Art A cross flow fan 20 as shown in FIGS. 5 and 6 for taking indoor air into an indoor unit of an air conditioner and sending out the air exchanged by a heat exchanger into the room.
And a motor 21 for driving the cross flow fan 20
However, in an indoor unit equipped with this type of blower, vibration during operation is a source of noise, and therefore, a bearing 21a of the motor 21 and a support for housing and supporting the motor 21 are provided. The vibration on the motor 21 side is absorbed by the vibration isolating member 23 via a vibration isolating member 23 formed annularly between the supporting portion 22a and the supporting portion 22a.

[0003]

However, vibrations are likely to occur on the side surface of the motor 21 due to the skew structure of the rotor and the like, and the vibration isolating member 23 may not be able to sufficiently absorb the vibration. . Further, the vibration damping member 23 is made of an elastic material generally called chloroprene rubber. The hardness (spring constant) of the elastic material changes depending on the ambient temperature and the number of years of use. descend. Chloroprene rubber can be selected from low hardness to high hardness, but low hardness has disadvantages such as unstable quality and large changes in hardness over time. Since there is a defect such as a large change in hardness with temperature, it is difficult to select the hardness, and it is not possible to maintain a stable anti-vibration effect for a long time with the anti-vibration member 23 made of this elastic material. Therefore, an object of the present invention is to provide a motor mounting device that solves the above-mentioned problems.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has a motor and an annular member having a substantially L-shaped cross section which is fixed to left and right outer peripheral ends of the motor. A support for accommodating and supporting the motor, the upper surface and the central portion of the left and right side surfaces being opened, and a first vibration isolating member formed substantially in the same shape as the support and accommodated in the support;
The annular member is fixed to the support that includes the first vibration isolating member and a pair of left and right second vibration isolating members provided between the annular member and that accommodates the first and second vibration isolating members. The motor is housed.

Further, at least one projection for preventing displacement of the first vibration isolator is provided in the support.

Further, the projections are provided on left and right inner walls of the support.

Further, the projection is provided on the bottom surface of the support.

Further, the first vibration isolating member is provided with a concave portion corresponding to the projection.

Further, a projection is provided on one of the contact surfaces of the first vibration isolating member and the second vibration isolating member, and a concave portion corresponding to the projection is provided on the other.

The first and second vibration isolating members are made of elastic rubber or resin.

Further, the first and second vibration isolating members are formed of different materials.

Further, the second vibration isolator is made of silicon rubber.

[0013]

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 of an air conditioner. A filter is provided in an air passage 4 connecting suction ports 2a and 2b provided on a front surface and an upper surface of a housing 1 and an outlet 3 at a lower portion of the front surface. An air filter 6, which can be attached and detached along the guide 5, a heat exchanger 7, and a cross flow fan 8 are arranged, and the air exchanged by the heat exchanger 7 is sent to the outlet 3 by the cross flow fan 8. The wind direction to the room is adjusted by a wind direction adjusting plate 9. Reference numeral 10 denotes a motor for driving the cross flow fan 8. The motor 10 is located on the control room side partitioned by a partition plate 11, and has an annular member (13) described below and a The first and second vibration isolating members (14,
15) is provided.

FIGS. 2 and 3 show an annular member 13 provided between a motor 10 for driving the cross flow fan 8 and a support 12 for accommodating and supporting the motor 10, and first and second vibration isolating members 14. , 15 on an enlarged scale. The annular member 13 is made of a hard material and has a substantially L-shaped cross section.
The motor 10 is fixed to the left and right outer peripheral ends of the motor 10 in order to increase the rigidity of the right and left side surfaces. The support body 12 is open at the center of the upper surface and the left and right side surfaces. A first anti-vibration member 14 formed substantially in the same shape as the support body 12 is provided inside the support body 12. The second vibration isolating member 15 having an L-shaped cross section is provided.

A first vibration isolator 14 and a second vibration isolator 15
Are made of different materials. Silicon rubber having excellent heat resistance is used for the inner second anti-vibration member 15 which comes into contact with the annular member 13 fixed to the left and right outer peripheral ends of the motor 10, and the outer first anti-vibration member 15 is used. The member 14 is made of chloroprene rubber that has been generally used. After the mounting of the annular member 13, the motor 10 is inserted from above the support 12, and the lead wire 16 is inserted from an insertion hole (not shown) provided at the bottom of the first vibration isolation member 14 to the bottom of the support 12. It is configured to be inserted into the provided insertion hole 12a and to be led out.

Also, the first side surface of the lower portion in the support 12 is
A plurality of protrusions 12b as shown in FIG. 4A for preventing the displacement of the vibration isolating member 14 are provided. Note that the protrusion 12b is not limited to the position as shown in FIG. 4A, but may be provided at the bottom as shown in FIG. 4B. Although not shown, the first
By providing a concave portion (or a hole) corresponding to the projection 12b in the vibration isolating member 14, it is possible to more reliably prevent the first vibration isolating member 14 from being displaced. Further, a projection is provided on one of the contact surfaces between the first vibration isolating member 14 and the second vibration isolating member 15, and a concave portion (or hole) corresponding to the projection is provided on the other, so that the second is achieved. Anti-vibration member 15
Can be prevented from shifting.

[0017]

According to the configuration described above,
It is effective in attenuating the vibration transmitted from the motor to the support more, and helps to reduce the noise of the equipment.In addition, the inner vibration isolator that contacts the annular members provided on the left and right outer peripheral ends of the motor has heat resistance. Since the excellent vibration isolating member is used, the deterioration of the vibration isolating performance due to the heat on the motor side is small, and it can withstand long-term use as the vibration isolating member.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an indoor unit of an air conditioner according to the present invention.

FIG. 2 is an enlarged perspective view of a main part of a blower and its vibration isolating member according to an embodiment of the present invention.

FIG. 3 is an enlarged sectional view of a main part of a blower and a vibration isolating member thereof according to the embodiment of the present invention.

FIG. 4 is a perspective view of a main part of a support showing the embodiment of the present invention.

FIG. 5 is an enlarged perspective view of a main part of a blower and its vibration isolating member showing a conventional example.

FIG. 6 is an enlarged sectional view of a main part of a blower and its vibration isolating member showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Housing 2a, 2b Inlet 3 Outlet 4 Air passage 8 Cross flow fan 10 Motor 12 Support 12a Insertion hole 12b Projection 13 Annular member 14 First vibration-proof member 15 Second vibration-proof member

Claims (9)

[Claims] 1. A motor, an annular member having a substantially L-shaped cross section which is fixed to each of left and right outer peripheral ends of the motor, and a support member for accommodating and supporting the motor, the upper part of which is opened at the center and the central part of both right and left side faces are opened. A first vibration isolator formed substantially in the same shape as the support and housed in the support, and a pair of left and right second vibration isolator provided between the first vibration isolator and the annular member. A motor mounting device, wherein the motor having the annular member fixed thereto is accommodated in the support accommodating the first and second vibration isolation members. 2. The motor mounting device according to claim 1, wherein at least one projection for preventing a displacement of the first vibration isolator is provided in the support. 3. The motor mounting device according to claim 2, wherein said projections are provided on left and right inner walls of said support. 4. The motor mounting device according to claim 2, wherein said projection is provided on a bottom surface of said support. 5. The motor mounting device according to claim 2, wherein a concave portion corresponding to the projection is provided in the first vibration isolation member. 6. The motor according to claim 1, wherein a projection is provided on one of contact surfaces of the first vibration isolation member and the second vibration isolation member, and a concave portion corresponding to the projection is provided on the other. Mounting device. 7. The motor mounting device according to claim 1, wherein said first and second vibration isolating members are made of elastic rubber or resin. 8. The motor mounting device according to claim 1, wherein said first and second vibration isolating members are formed of different materials. 9. The motor mounting device according to claim 1, wherein said second vibration isolator is made of silicone rubber.