KR920000716B1 - Rotary electric machine - Google Patents

Abstract

No content.

Description

Rotary machine

1 is a cross-sectional view of a washing machine in a first embodiment of the present invention.

2 is an exploded perspective view of the body part.

3 is a sectional view showing the main parts of the outer case body in the second embodiment of the present invention.

4 is an internal perspective view of the outer case body in the third embodiment of the present invention.

5 is an internal perspective view of the outer case body in the fourth embodiment of the present invention.

6 is a cross-sectional view of the dishwasher in the embodiment of the present invention.

7 is a cross-sectional view of the clothes dryer in the embodiment of the present invention.

8 is a cross-sectional view of a conventional washing machine.

* Explanation of symbols for the main parts of the drawings

3: inner bird 7,22,31: motor

13,15,16,25,26: outer case body

13a, 13b, 15a, 15b, 16a, 16b, 25a, 25b, 26a, 26b: metal plate

13, c, 15c, 16c, 25c, 26c: Resin 17: Cleaning tank

21: cleaning pump 27: rotating drum

36: blower fan

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary machine having a rotary drive unit such as a motor in a main body such as a washing machine, a dish washer, a clothes dryer, and more particularly, to a configuration of an outer case body.

Background Art Recently, rotary machines such as washing machines, clothes dryers, and dishwashers are often used at night, and therefore, low noise during driving is strongly desired.

Thus, a configuration of a typical washing machine as a rotary machine will be described with reference to FIG. 8. In the drawing, reference numeral 1 denotes an outer case body formed in a box shape by a sheet metal of thin thickness, and in this outer case body 1, a dewatering and washing tank having a dewatering hole 2 on the wall (hereinafter referred to as an inner tank) ( The water tank 4 which stored 3) rotation freely is provided.

This water tank 4 is elastically suspended in the upper part 4 corner of the outer case body 1 by the suspending rod 5. In addition, a reinforcement plate 6 is fixed to the bottom of the water tank 4, and a motor 7 and a mechanical case 8 driven by the motor 7 are fixed to the reinforcement plate 6. It is. The mechanism case 8 selectively transmits the rotation of the motor 7 to the rotary blade 10 or the inner tank 3 itself provided at the inner bottom of the inner tank 3. In addition, (11) is a drain valve in communication with the bottom of the water tank (4), (12) is a lid that covers the top of the outer case body (1) so as to open and close.

Next, the operation will be described. First, during washing and rinsing, the motor 7 is rotated forward and backward, the machine case 8 is switched to the rotary blade 10, and the rotary blade 10 is rotated forward and backward. Water flow is generated in the inner tank 3 to wash or rinse the clothes. In addition, in the decoupling well, the motor 7 is rotated at high speed, the machine case 8 is switched to the inner tank 3, the inner tank 3 is rotated at high speed, and the clothes in the inner tank 3 are rotated by centrifugal force. Dewatering was carried out, and the water which flowed out from clothes through the dehydration hole 2 was scattered to the water supply tank 4, and it drained out of an apparatus via the drain valve 11.

However, in the conventional structure, the vibration by the rotation of the motor 7 and the vibration of the rotary blade 10 or the inner tub 3 driven by the rotation of the motor 7 are suspended by elastic rods ( Although attenuated to some extent by 5), it has always been transmitted to the outer case body 1, and the outer case body 1 is shaken to generate a sound, which has the problem that low noise cannot be achieved. In addition, the sound generated from the motor 7 or the sound generated from the mechanism case 8 includes the outer case body 1 formed of a simple thin sheet metal. It was transmitted to the surface of 1) and had a problem that driving noise could not be prevented from leaking out of the equipment.

In order to solve this problem, it may be considered to increase the thickness of the sheet metal of the outer case body 1, but in this case, the weight of the outer case body 1, which is a main component of the product, becomes large, and the product itself is rough and heavy. Had a task to do. The above problem is not limited to the case of a washing machine, but is common to a rotating machine having a rotation driving unit in the outer case body.

In view of the above problems, an object of the present invention is to achieve a low noise of the device.

In order to achieve the above object, the first technical means of the present invention comprises an outer case body having a rotation driving unit and a device driven by the multilayer metal plate with a resin material interposed between the metal plates.

The second technical means is configured such that the thickness of the multilayer metal sheet is thicker than the inner side.

In addition, the third technical means is configured such that the hardness of the multi-layered metal sheet is harder than the inner side.

Moreover, a 4th technical means forms one at least some recessed part or convex part in the inner surface of a multilayer metal plate.

In the fifth to seventh technical means, the technical means is used for a washing machine, a dish washer and a clothes dryer.

According to the first technical means, the vibration and the sound generated from the rotational driving portion are reduced by the resin material constituting a part of the outer case body, so that the leakage of the sound out of the outer case body can be greatly reduced.

According to the second and third technical means, since the thickness or hardness of the multi-layer metal plate is different from the outside to the inside, it is easy to bend the multi-layer metal plate inward, and the box-shaped outer case body is formed from the board-shaped one. It is easy to form.

Further, according to the fourth technical means, since the concave portion or the convex portion is formed on the inner surface, the sound generated from the rotational drive portion can be reflected in the outer case body, and the sound can be prevented from leaking outside the outer case body. have.

In addition, according to the fifth to seventh technical means, it is possible to drastically reduce the operation noise of washing machines, dishwashers, and clothes dryers used day and night. It can be said that no problem occurs.

Hereinafter, the first embodiment of the present invention will be described with reference to FIGS. 1 and 2. In FIG. 1, main parts, such as the inner tank 3, the water tank 4, the hanging bar 5, the motor 7, the mechanism case 8, the rotary blade 10 which comprise a washing machine, are the prior art examples. Since it is the same as, the same reference numerals are given to the same parts, and the description thereof is omitted. The present embodiment is characterized in that the outer case body 13 is made of a viscoelastic poly between two metal plates 13a and 13b made of iron sheets, stainless steel, aluminum, and the like. It consists of a multilayer metal plate through which resin 13c, such as ester count paper, was interposed. In the outer case body 13, as shown in FIG. 2, one multilayer metal plate 14 is bent at four places (A) to (D), and the opening part 15 is provided on the back side. . The opening 15 is covered with a back plate 16, and the bars 16 and 17 are fixed to the upper and lower portions of the opening 15. (18) is a screw that fixes the back plate 16 to the back of the outer case body (13).

Next, operation | movement of the washing machine of the said structure is demonstrated. When the motor 7 is driven, the rotational force is transmitted to the mechanical case 8, and the mechanical case 8 inverts the rotary blade 10 from side to side when washing and rinsing, and the inner tank 3 when dewatering. Rotate at high speed. When they operate, the driving sound is generated from the motor 7 or the mechanical case 8, etc., but since the outer case body 13 is formed of a multi-layered metal plate, the sound is transmitted out of the outer case body 13. At that time, the resin 13c is attenuated significantly. In addition, it is transmitted to the outer case body 13 via the vibration wholesale bar 5 generated from the mechanism case 8, the rotary blade 10, the inner tank 13, etc., which are rotated by the motor 7, Since the outer case body 13 is a multi-layered metal plate, the vibration is also greatly attenuated, and the occurrence of sound due to the vibration can be suppressed in the outer case body 13 itself. Particularly in the washing machine, when the dehydration is large and the clothes in the inner tank 3 are pulled to one side, the inner tank 3 may swing and collide with the water tank 4, but the multilayer metal plate may When the outer case body 13 is used, a sound leaking out of the outer case body 13 can be prevented sufficiently even with the loud vibration or impact sound.

Next, a second embodiment of the present invention will be described with reference to FIG. As shown in the figure, the thicknesses of the metal plates 13a and 13c of the multilayer metal plate constituting the outer case body 13 are different. That is, the thickness tb of the inner metal plate 13b of the outer case body 13 is made thinner than the thickness ta of the outer metal plate 13a of the outer case body 13.

According to the said structure, the strength of the inner metal plate 13b becomes weaker than the strength of the outer metal plate 13a, and it is easy to bend inward and the bending workability of the outer case body 13 can be improved.

Moreover, even if the hardness of the metal plate 13a is harder than the hardness of the metal plate 13b, the multilayer metal plate can be easily bent inward.

Next, a third embodiment of the present invention will be described with reference to FIG. As shown in the figure, the outer case 15 is composed of a multilayer metal plate having a resin 15c interposed between the metal plates 15a and 15b, and the inner metal plate 15b is formed in a wavy shape. . According to the above constitution, the sound generated inside the outer case body 15 is confusingly reflected at the inner wavy portion, thereby preventing the sound from leaking out of the outer case body. In the fourth embodiment shown in FIG. 5, a plurality of convex portions 16d are formed on the inner metal plate of the multilayer metal plate made of the metal plates 16a, 16b and the resin 16c, and the sound is disturbed. Reflecting.

Next, the dishwasher using the multilayer metal plate will be described with reference to FIG. As shown in the figure, a washing nozzle 18 is disposed below the washing tank 17, and the washing nozzle 18 is disposed in the dish 20 placed in the upper basket 19. The washing water from 21 is sprayed and the tableware 20 is washed. The washing pump 21 is rotated by the motor 22, sucks water in the washing tank 17 through the bottom filter 23 in the washing tank 17, and washes the washing nozzle. Water is sent to (18) to circulate the washing water. Denoted at 24 is a door covering the front opening of the cleaning tank 17 so as to be openable. The cleaning tank 17, the cleaning pump 21 and the motor 22 fixed to the bottom of the cleaning tank 17 are housed in the outer case body 25. This outer case body 25 is comprised from the multilayer metal plate which interposed the resin 25c between the metal plates 25a and 25b.

When the dishwasher of the above structure is operated, the washing pump 21 is driven by the driving of the motor 22, and the washing water is strongly sprayed from the washing nozzle 18. FIG. The jetted washing water collides with the tableware to remove the contamination, and also collides with the inner wall of the washing tank 17 to generate a collision sound. However, the cleaning tank 17 is covered by the outer case body 25, and the sound can be attenuated at the resin 25c portion, thereby preventing the sound from leaking out of the device. In addition, the door 24 on the front surface of the cleaning tank 17 is generally configured to be hard to generate a crash sound or to be hard to leak a crash sound. In addition, the vibration due to the rotation of the motor 22 and the cleaning pump is transmitted to the cleaning tank 17, but is attenuated when transferred from the cleaning tank 17 to the outer case body 25, and the outer case body 25 itself. It is also possible to prevent the generation of sound due to vibration.

Next, the clothes dryer using the multilayer metal plate will be described with reference to FIG. As shown in the figure, the outer case body 26 is constituted by the metal plates 26a, 26b and the resin 26c, and a rotating drum 27 is provided in the outer case body 26. The front inner circumference of the rotating drum 27 is supported by the front plate 28 mounted on the front surface of the outer case body 26 so as to be slidable via a sealing material 29. In addition, the rear portion of the rotating drum 27 is supported by the shaft 30 mounted on the rear portion of the outer case body 26, and the rotational force of the motor 31 mounted on the upper rear surface of the outer case body 26. It is transmitted through this belt 32, and the rotating drum 27 is comprised by the structure which rotates in a horizontal direction. Moreover, the discharge port 28a is formed in the front plate 28, the outside air is sucked as shown by arrow A via the filter 33 attached to the front lower side of the main body 26, and the heater 34 is carried out. Is heated to become hot air, and is discharged into the rotating drum 27 from the discharge port 28a. The hot air is extracted by the blowing fan 36 in the fan casing 35 provided at the rear of the rotating drum 27 by deodorizing moisture from the clothes (not shown) in the rotating drum 27. Discharge out of the appliance through the.

The clothes dryer of the above configuration generates a sound caused by the rotation of the blower fan 36, a drive sound of the motor 31, or a sound of clothes falling into the rotating drum 27, but the outer case body 26 The resin layer 26c constituting the same absorbs sound and is prevented from leaking out of the device. In addition, the vibration of the rotating drum 27 and the driving vibration of the motor 31 generated by the fall of the clothes are also absorbed by the resin layer 26c of the outer case body 26, so that the outer case body 26 itself is Vibration can also be suppressed, and the generation of sound due to the vibration can also be greatly reduced.

In addition, the uneven portions shown in FIGS. 4 and 5 may be formed on the inner surface of the outer case body of the dish washing machine or the clothes dryer described above to reflect the noises generated inside the outer case body. You may improve bending workability by changing the thickness or hardness of an internal and external metal plate. In addition, in the present Example, although the resin layer displayed the multilayer steel plate of one layer, the multilayer metal plate which made multiple layers of the resin layer may be sufficient.

As is evident from the above embodiment, according to the present invention, an outer case body for mounting an inner tank, a rotary blade, a cleaning pump, and a rotating drum driven therein by a rotary drive unit such as a motor and the rotary drive unit is formed of a resin material. Since the multilayer metal sheet is interposed, the synergistic effect of absorbing not only the sound generated inside but also the vibration transmitted to the outer case body can realize low noise during operation of the device. Moreover, since the thickness or hardness of the metal plate inside and outside of a multilayer metal plate is different, it is easy to bend and use the multilayer metal plate of 1 sheet, and the workability of an outer case body is improved. In addition, by using a multi-layered metal plate for the outer case body of the washing machine, dishwasher and clothes dryer used at night, the noise problem at night can be solved, and the use time of the device can be greatly extended.

Claims (6)

A rotary drive unit, an apparatus driven by the rotary drive unit, and an outer case body having the rotary drive unit and the driven device inside therein, the outer case body being a multilayer with a resin material between metal plates. Rotary machine composed of metal plates. 2. The rotating apparatus according to claim 1, wherein the thickness of the metal plate of the multi-layer metal plate is so that the outside thereof is thicker than the inside. The rotary machine according to claim 1, wherein the hardness of the metal plate of the multi-layered metal plate is such that the outside thereof is harder than the inside. The rotary machine according to claim 1, wherein a plurality of at least one concave portion or convex portion is formed on an inner surface of the multilayer metal plate. 3. The rotary machine according to claim 2, wherein the hardness of the metal plate of the multi-layer metal plate is so that the outside thereof is harder than the inside. The rotary machine according to claim 1, 2, 3, 4 or 5, wherein the outer case body of the washing machine, the dish washer and the clothes dryer is made of a multi-layered metal plate.

Images