JP3272044B2 - Fan motor support device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fan motor support device used for an outdoor unit of an air conditioner, and more particularly to a fan motor support device having an improved support structure for elastically supporting a fan motor.

[0002]

2. Description of the Related Art Generally, a fan motor for blowing and cooling an outdoor heat exchanger is mounted on an outdoor unit of an air conditioner, and the fan motor is elastically supported by a supporting device so that vibrations are not transmitted to the outside. ing. FIG. 12 shows an example of a conventional support device. As shown in the drawing, the support device a has a motor base e for supporting a rear boss c of a fan motor b via an annular vibration-proof rubber d. A holding plate h that supports the boss portion f via an annular vibration-proof rubber g is fixed by a screw i or the like.

[0003]

However, in such a supporting device, since the vibration isolating rubbers d and g are directly attached to the fan motor b, the vibration is reduced due to the heat of the fan motor b. There is a possibility that the battery does not have the above. Further, since the holding plate h projects forward to support the front boss portion f of the fan motor b via the vibration isolating rubber g, the holding plate h interferes with a fan (not shown) attached to the rotating shaft j to reduce noise. There was a risk of occurrence.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a fan motor supporting device which can prevent thermal deterioration of vibration isolating rubber and generation of fan interference noise.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is directed to a motor base mounted on a stationary frame.
Fan for mounting the fan motor horizontally
In the motor support device, formed on the motor base
An opening for inserting the fan motor in a non-contact manner;
A flange formed on the outer periphery of the fan motor and the fan
It is formed in an annular shape so that the motor can be inserted in a non-contact manner.
Rubber damping holes at the top, bottom, left and right along the direction.
A fixing plate for connecting a flange, and a vibration-proof rubber engagement hole
A cylindrical anti-vibration rubber having an annular groove engaged with
Insert the above-mentioned anti-vibration rubber into the anti-vibration rubber engagement holes on the
Notch for guiding from the side, lower left and right of the fixed plate
Guides the above-mentioned anti-vibration rubber into the anti-vibration rubber engagement hole from the outer peripheral side
And a notch for the vibration-proof rubber.
It is engaged with each anti-vibration rubber engagement hole through the
Insert a screw member into the vibration damping rubber and
To the motor base
And fix the fan motor flange to the fixing plate.
It is characterized by having been specified .

[0006]

[Function] Since the vibration isolating rubber is arranged between the fixing plate fixed to the flange of the fan motor and the motor base, unlike the conventional supporting device directly attached to the fan motor, heat deterioration may occur. No vibration can be maintained for a long time. In addition, an annular fixing plate is provided in a plurality of vibration isolating rubber engagement holes.
Since a notch is formed on the inner or outer side,
The opening directions of the
And not. In addition, since the fixing plate is fixed to the flange formed on the outer periphery of the fan motor, the fixing plate does not interfere with the fan and does not emit any interference sound.

[0007]

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

1 to 4, reference numeral 1 denotes a fan motor, and the fan motor 1 is elastically supported by a support device 2. The support device 2 includes a flange 3 formed on the outer periphery of the fan motor 1, an annular fixing plate 4 fixed to the flange 3, a plurality of anti-vibration rubber engagement holes 5 formed in the fixing plate 4, It is mainly constituted by a cylindrical vibration-proof rubber 9 (see FIG. 8) fixed to the base 6 via a screw member 7 and having an annular groove 8 engaged with the vibration-proof rubber engagement hole 5. These will be specifically described below.

On the outer periphery of the fan motor 1, a plurality of flanges 3 having screw holes 10 are arranged at equal intervals in the circumferential direction (in the illustrated example, three flanges 3).
An annular fixing plate 4 having an opening 11 through which the fan motor 1 is inserted in a non-contact manner is fixed to these flanges 3 with screws 12. As shown in FIG. 4, the fixing plate 4 is formed with a screw hole 13 into which the screw 12 is screwed, and a plurality of (four in the illustrated example) vibration-proof rubber engagement holes with which the vibration-proof rubber 9 is engaged. 5 is substantially concentric with the screw hole 13 of the fixing plate 4.
It is formed up, down, left and right along the circumferential direction .

On the other hand, the motor base 6 has support legs 14 fixed to a fixed frame (not shown). Above the support legs 14, an opening 15 through which the fan motor 1 is inserted in a non-contact manner as shown in FIG. Is formed. Further, a screw hole 17 into which the screw 16 of the screw member 7 is screwed is formed in the motor base 6, and a small hole 18 through which the screw 12 is inserted in a non-contact manner is formed (see FIG. 7). Screw fixing member 7
8, is mainly composed of a screw 16, a washer 19 and a collar 20, which are loosely fitted to the screw 16, a vibration isolating rubber 9 is mounted on the collar 20, and the vibration isolating rubber is One end of 9 is pressed.

As shown in FIG. 8, an annular groove 8 is formed on the outer periphery of a substantially middle portion in the longitudinal direction of the anti-vibration rubber 9 so as to be engaged with the anti-vibration rubber engagement hole 5 of the fixing plate 4. By the way, since the maximum diameter of the anti-vibration rubber 9 is formed larger than the diameter of the anti-vibration rubber engagement hole 5, when the anti-vibration rubber engagement hole 5 is a simple hole as shown in FIG. The vibration rubber 9 must be inserted while being twisted, and the mounting operation is not easy. So fixed
The above-mentioned anti-vibration rubber 9 is inserted into the anti-vibration rubber engagement hole 5 in the upper part of the plate 4.
Notch 2 for guiding from the radially inner peripheral side of fixed plate 4
1 is formed, and a vibration isolating rubber engagement at a lower portion of the fixed plate 4 is formed.
In the hole 5, the anti-vibration rubber 9 is provided on the radially outer side of the fixing plate 4.
A notch 21 for guiding the vibration-proof rubber 9 is provided.
Can be easily mounted. In addition, the upper portion of the notch 21 is formed on the opening 11 side, and the lower portion is formed on the outer side. Since the opening directions of the notches 21 are different from each other, even if a load is applied in the vertical and horizontal directions. In addition, the anti-vibration rubber 9 does not fall out of the notch 21.

The motor base 6 and the fixed plate 4 are provided with regulating pieces 22 to 24 for regulating the relative displacement allowed by the elasticity of the vibration isolating rubber 9 within a predetermined range. This prevents an excessive force from being applied to the anti-vibration rubber 9 to damage it. These restriction pieces 22 to 24
Are upper regulation pieces 22 projecting from the top of the motor base 6.
And a lower restricting piece 23 protruding forward from the lower side of the opening 15 of the motor base 6 and a hook-shaped side restricting piece 24 bent back from both sides of the fixing plate 4. Has become. The motor base 6 has side regulating holes 25, 25 with which the side regulating pieces 24, 24 are engaged.
, Gaps S1, S1 on the left and right, gaps S2 on the front and back,
S2, the relative displacement of only the gaps S3 and S3 up and down is allowed. A tongue piece 26 is bent rearward at the top of the fixing plate 4, and an upper regulation hole 27 is formed in the tongue piece 26 so that the upper regulation piece 22 is engaged. The relative displacement is allowed only by the gaps S2 and S2.
A lower regulating piece 23 is provided below the opening 11 of the fixing plate 4.
Is formed, and a relative displacement of only the gap S3 in the vertical direction is allowed. A gap S4 is formed between the motor base 6 and the fixing plate 4, and a gap S4 is formed between the top of the motor base 6 and the tongue piece 26.
5 are formed.

In assembling the support device 2 having the above-described structure, first, a vibration-proof rubber 9 is mounted on the vibration-proof rubber engagement hole 5 of the fixing plate 4, and the vibration-proof rubber 9 is attached to the motor by the screw member 7. After fixing to the base 6, the fan motor 1 may be fixed to the fixing plate 4 with screws 12. The fan motor 1
The opening 11 of the fixing plate 4 is
A hook 29 for temporarily fixing the upper flange 3 of the fan motor 1 is formed at an upper portion of the fan motor 1 so that the fan motor 1 can be fixed without the screw 12.

According to the fan motor 1 support device 2 having the above-described configuration, the vibration isolating rubber 9 is disposed between the fixed plate 4 fixed to the flange 3 of the fan motor 1 and the motor base 6. Unlike the conventional support device directly attached to the fan motor 1, thermal deterioration does not occur and the vibration isolation performance can be maintained for a long time. In addition, since the fixing plate 4 is fixed to the flange 3 formed on the outer periphery of the fan motor 1, the fixing plate 4 does not interfere with the fan and does not emit an interference sound.

A notch 21 for facilitating the mounting of the vibration isolating rubber 9 into the vibration isolating rubber engaging hole 5 and regulating pieces 22 to 24 for limiting the relative displacement between the motor base 6 and the fixing plate 4.
Is not always required. Further, as shown in FIG. 9, a cut-and-raised portion 30 may be provided on the fixed plate 4 to form the ventilation hole 31, and the fixed plate 4 and the vibration-proof rubber 9 may be cooled.

As the screwing member 7, a member as shown in FIG. 10 may be used. FIG. 10 shows an example of the screwing member 7. The screw member 7 has a screw 16 having a straight portion 16b slightly larger in outer diameter than the screw portion 16a, a washer 19 rotatably fitted to the straight portion 16b, and lightly press-fitted into the straight portion 16b. It mainly comprises a collar 20. The collar 20 is formed to be slightly shorter than the length of the vibration isolation rubber 9, and the straight portion 16 b is formed to be shorter than the collar 20. The collar 20 is lightly pressed into the straight portion 16b so as to have a gap S6 allowing rotation of the washer 19 between the collar 20 and the head 16c as shown in FIG. Therefore, the washer 19 is rotatable until the final stage of screwing, so that when the screw 16 is screwed in, the vibration isolating rubber 9 is twisted via the washer 19, so that there is no damage. At the final stage of screwing, the collar 20 is pushed to the head 16c side and abuts against the washer 19 as shown in FIG.
The washer 19 is sandwiched between the washer 19 and the collar 20, and the vibration isolating rubber 9 is uniformly compressed to the length of the collar 20 between the motor base 6 and the washer 19.

FIG. 11 shows a modification of the vibration-proof rubber 9. At both end portions of the vibration isolating rubber 9, a radial pressure groove 32 and a conical tapered portion 33 are formed to form a plurality of (four in the illustrated example) contact pressure surface portions 34 circumferentially divided. . According to the anti-vibration rubber 9, a gap is formed between the anti-vibration rubber 9 and the motor base and the washer 19, so that the compression of the screwing member 7 with respect to the tightening of the screw member 7 can be more relaxed than that having a flat end. Therefore, even if the tightening torque varies, a uniform vibration damping effect can be obtained.

[0018]

In summary, according to the present invention, the following excellent effects are exhibited.

(1) Since the anti-vibration rubber is disposed between the motor base and the fixing plate fixed to the flange of the fan motor, unlike the conventional support device directly mounted on the fan motor, the thermal deterioration is reduced. No vibration occurs and the vibration isolation performance can be maintained for a long time. In addition, a plurality of anti-vibration rubber engagement holes
Notches are formed on the inner or outer circumference of the fixing plate.
Therefore, the opening direction is different, and the anti-vibration rubber
Will not fall off.

(2) Since the fixing plate is fixed to the flange formed on the outer periphery of the fan motor, the fixing plate does not interfere with the fan and does not emit interference noise.

[Brief description of the drawings]

FIG. 1 is a front view showing one embodiment of the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a view showing a motor base, (a) a front view,
(B) is a side view.

4 (a) is a front view, FIG. 4 (b) is a side view, and FIG. 4 (c) is a plan view.

FIG. 5 is a view showing a motor base to which a fixing plate is attached;
(A) is a front view, (b) is a side view.

FIG. 6 is a partial side view showing an engagement between a restriction piece provided on a side portion of a fixing plate and a motor base.

FIG. 7 is a schematic sectional view taken along line AA of FIG. 1;

FIG. 8 is an exploded perspective view of an anti-vibration rubber and a screw fixing member.

FIG. 9 is a perspective view showing a modification of the fixing plate.

FIG. 10 is a view showing another modification of the screwing member.
(A) is sectional drawing before a screwing final stage, (b) is sectional drawing in a screwing final stage.

11A and 11B are diagrams showing a modified example of the vibration damping rubber, in which FIG. 11A is a front view, and FIG. 11B is a sectional view taken along the line BB of FIG.

FIG. 12 is a cross-sectional view showing a conventional fan motor support device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fan motor 3 Flange 5 Anti-vibration rubber engagement hole 6 Motor base 7 Screw fixing member 8 Annular groove 9 Anti-vibration rubber 16 Screw 16a Screw part 16b Straight part 19 Washer 20 Collar 21 Notch part 22-24 Regulation piece 34 Pressure contact surface part

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-60-204477 (JP, A) JP-A 1-127342 (JP, U) JP-A 53-41709 (JP, U) JP-A 3- 63057 (JP, U) Actually open 48-54707 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F24F 5/00 H02K 5/00

Claims (4)

(57) [Claims] 1. A motor base standing on a fixed frame.
The fan for horizontal installation of the fan motor
Motor support device, formed on the motor base
An opening for inserting the fan motor in a non-contact manner,
A flange formed on the outer periphery of the fan motor and the fan
Is formed in an annular shape so that the motor
Has vibration-absorbing rubber engagement holes at the top, bottom, left and right along the direction
A fixing plate for connecting the flange and the vibration-proof rubber engagement
A cylindrical anti-vibration rubber having an annular groove engaged with the hole;
Insert the anti-vibration rubber into the anti-vibration rubber engagement holes on the upper left and right of the fixed plate.
Notch for guiding from the circumferential side and lower left of the fixed plate
Guide the anti-vibration rubber from the outer circumference to the right anti-vibration rubber engagement hole.
And a notch for the vibration-proof rubber.
Engage each anti-vibration rubber engagement hole through the notch and
Insert the screw member into the anti-vibration rubber, and
The motor base with the screw
The fan motor flange on the fixing plate.
A fan motor support device, which is fixed . 2. The fan motor support device according to claim 1, wherein the fixing plate and the motor base have a restriction piece that engages with each other to restrict relative displacement within a predetermined range. 3. The screwing member comprises a screw having a straight part, a washer rotatably fitted to the straight part, and a collar lightly pressed into the straight part. The fan motor support device according to claim 1, wherein the collar is configured to contact the washer. 4. The anti-vibration rubber is radially divided on an end face.
2. The fan motor supporting device according to claim 1, comprising a plurality of contact pressure portions.