JP5845411B2 - Washing machine - Google Patents

Description

  The present invention relates to a washing machine having an operation unit in a part of an outer shell.

  A conventional washing machine has a washing / dehydrating tub that performs washing and dehydration inside the machine body, and has an operation unit on the outer shell of the machine body in the vicinity of an insertion port through which clothes are taken in and out. Moreover, a washing machine may be installed outdoors due to restrictions on the living environment (see, for example, Patent Document 1).

  FIG. 8 is a side sectional view of a conventional washing machine, FIG. 9 is an exploded explanatory view of the conventional washing machine, and FIGS. 10 and 11 are sectional views of essential parts of the conventional washing machine. The configuration will be described below.

  An upper shell 103 is mounted on the upper part of the washing machine main body 102 that houses the washing / dehydrating tub 100 and the water receiving tub 101. A clothing input port 104 is formed in the approximate center of the upper shell 103. In addition, a substantially concave accommodating portion 106 that accommodates the operation substrate 105 and the like is formed on the front side of the upper outer shell 103. The housing unit 106 is covered with an operation panel 109 having a display unit 107 and operation buttons 108. An operation switch 110 mounted on the operation board 105 is disposed at a position corresponding to the operation button 108. A power supply board 111 included in a part of the upper shell 103 controls power supply to a load such as a motor 112 attached to the lower portion of the water receiving tank 101 including the washing / dehydrating tank 100. The operation board 105 and the power supply board 111 are housed in a first boat-like protective case 113a and a second boat-like protective case 113b, respectively. The operation board 105 is locked to the boat-like protective case 113a by a claw (not shown) or the like, and the first boat-like protective case 113a is attached to the operation board attachment boss 114 provided on the operation panel 109 with the operation board attachment screw. It is fixed at 115. The power supply substrate 111 is fixed by a power supply substrate fixing claw 116 provided on the second boat-like protective case 113b. Nearly the entire periphery of the edge of the housing portion 106 has a contact portion 117 that makes contact with the operation panel 109, and the operation panel 109 is fixed to the housing portion 106 with screws or claws.

  A drain hole 118 is provided at a position corresponding to the inner side of the outer peripheral wall of the washing and dewatering tub 100 at the bottom of the storage unit 106. When the clothes are taken into and out of the washing / dehydrating tub 100 through the drain hole 118, the water that has entered the housing portion 106 from the contact portion 117 is returned to the washing / dehydrating tub 100.

  The operation board 105 includes a power switch 119 that is electrically connected to a commercial power source and a microcomputer 120 that controls the washing machine. The power supply substrate 111 is covered with a first metal cover 121 that covers the second boat-like protective case 113b and a second metal cover 123 that covers the connector 122 side connected to the power supply substrate 111. The operation board 105 is waterproofed by being filled with a potting agent 124 after being fixed to the first boat-like protective case 113a. The power supply board 111 is waterproofed by being filled with a potting agent 124 made of urethane resin or the like after being fixed to the second boat-like protective case 113b.

  The operation board 105 is protected by a potting agent by reducing the resistance between the patterns of the operation board 105 due to the ingress of water falling from the clothes when the clothes are put in and out of the clothes insertion port 104 or by rain when the washing machine is installed outdoors. This is necessary to prevent the erroneous display and malfunction of the washing machine. In particular, since the microcomputer 120 has a short space between terminals and is easily affected by a slight resistance change, moisture prevention is required. In addition, since the power switch 119 is connected to a commercial power source, it is likely to be short-circuited when moisture enters the switch, so that moisture prevention is required.

  The operation of the washing machine configured as described above will be described below. Washing is performed by putting laundry, water, and detergent into the washing / dehydrating tub 1 and moving the laundry by the flow of water generated by the power of the motor 112 and rubbing it by contact with each other or with the washing / dehydrating tub 1. Is done. In the dehydration, the laundry is put into the washing / dehydrating tub 100, the power of the motor 112 is transmitted to the washing / dehydrating tub 1, the washing / dehydrating tub 100 is rotated at high speed, and the water is separated from the laundry by centrifugal force. Done. The dehydrated laundry is taken out from the washing / dehydrating tank 100 and dried. Alternatively, in the case of a washing machine with a drying function, drying is performed as it is.

JP 2008-67901 A

  However, in such a conventional washing machine, when the foam generated during washing overflows from the washing / dehydration tub and further overflows beyond the water receiving tub cover, foam is generated from the drain hole to the accommodating portion. Since it is easy to enter the area of the display board through the gap between the first boat-like protective case and the housing, the gap between the first boat-like protective case and the operation panel, etc. Due to the intrusion, there is a problem that the operation switch and the resistance between terminals of the microcomputer are lowered and erroneously displayed, or the power switch may malfunction due to a tracking phenomenon in the commercial power supply area.

  The present invention solves the above-mentioned conventional problems, and provides a washing machine that waterproofs the operation board and prevents bubbles generated during washing from entering the area of the operation board, thereby preventing erroneous display and malfunction. The purpose is to do.

  In order to achieve the above object, in the washing machine of the present invention, the drain hole provided in the bottom portion of the accommodating portion for accommodating the operation board and the protective case is provided above the water receiving tank cover and the water receiving tank cover. Are arranged in a region outside the substantially circular edge portion.

  As a result, even if foam generated in the washing / dehydrating tub overflows beyond the water receiving tank cover during washing, the foam falls below the washing machine body before reaching the drain hole, In this case, bubbles do not enter the storage portion and bubbles do not enter the area of the display substrate, so that erroneous display and malfunction can be prevented.

  The washing machine of the present invention can realize a washing machine that waterproofs the operation board, hardly varies in operation force, and can prevent malfunction.

Sectional drawing of the principal part of the washing machine in Embodiment 1 of this invention Cross section of the main part of the washing machine Cross section of the main part of the washing machine Cross section of the main part of the washing machine Top sectional view of the washing machine Cross section of the main part of the washing machine Sectional drawing of the principal part of the washing machine in Embodiment 2 of this invention and its power supply device Side sectional view of a conventional washing machine Exploded view of a conventional washing machine Cross section of the main part of a conventional washing machine Cross section of the main part of a conventional washing machine

  The first invention includes a washing / dehydrating tub for storing laundry, a water receiving tub for storing the washing / dehydrating tub, a water receiving tub cover for covering the upper end of the water receiving tub, and an operation input operation. A substrate, a protective case for protecting the operation substrate, an outer casing of the washing machine, and provided above the water receiving tub to accommodate the protective case, and a storage portion having a bottom, and provided at the bottom A water drainage hole is provided in the housing portion, and waterproof means for waterproofing the operation board is provided, and the water drain hole is provided on the outer side of the outer periphery of the water receiving tank cover. Since the water does not collect easily, the operation board can be waterproofed. Further, since bubbles generated during washing do not enter the area of the operation board, erroneous display and malfunction can be prevented.

  According to a second aspect of the present invention, the washing machine of the first aspect further includes an operation panel, and the waterproof means is configured such that a groove provided in the protective case corresponds to a rib provided in the operation panel. It is a labyrinth structure, and the groove is provided over the entire circumference surrounding the operation board, so that foreign matters such as water vapor and insects entering from the drain hole can be prevented from entering the area of the operation board. it can.

  According to a third aspect of the present invention, the washing machine of the first or second aspect of the present invention further includes a waterproof power supply board, and the power supply board is disposed outside the area that is waterproofed by the waterproof means. A high current circuit that is connected to a power source and flows a large current to a load such as a motor is arranged on the power supply board, and a low current circuit such as a display means such as an LED or an operation switch is arranged on the operation board. Since the area and the low current area can be separated from each other, even if condensation occurs in the area of the operation board due to a decrease in temperature or the like, a short circuit of the high current circuit can be easily prevented.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, the thing of the same structure as a prior art example attaches | subjects the same code | symbol, and abbreviate | omits description. Further, the present invention is not limited by this embodiment.

(Embodiment 1)
FIG. 1 is a cross-sectional view of a main part of the washing machine according to Embodiment 1 of the present invention. FIG. 2 is a cross-sectional view of a main part of the washing machine according to Embodiment 1 of the present invention. FIG. 3 is a cross-sectional view of a main part of the washing machine according to Embodiment 1 of the present invention. FIG. 4 is a cross-sectional view of a main part of the washing machine according to Embodiment 1 of the present invention. FIG. 5 is an upper cross-sectional view of the washing machine in the first embodiment of the present invention. FIG. 6 is a cross-sectional view of a main part of the washing machine according to Embodiment 1 of the present invention.

The washing / dehydrating tub 1 is included in a water receiving tub 40 so as to be rotatable. A motor (not shown) is attached to the lower part of the water receiving tank 40. On the upper part of the washing machine main body 2 that houses the water receiving tub 40 and the washing / dehydrating tub 1 supported by the rotating shaft, an upper shell 3 formed of polypropylene that covers substantially the entire upper part of the washing machine main body 2 is mounted. ing. Near the center of the upper shell 3 is formed a clothing insertion port 4 that is integrally formed with the upper shell 3 and extends downwardly above the washing and dewatering tub 1. A substantially concave accommodating portion 5 is formed on the front side of the upper shell 3. The accommodating part 5 is located between the front side of the washing machine main body 2 and the clothing insertion port 4, and is configured to have almost the entire width of the upper outer shell 3. The display unit 6 printed on a PET sheet and the operation panel 8 formed of polypropylene having the operation buttons 7 cover the entire storage unit 5. The back surface of the display unit 6 is affixed to the surface of the operation panel 8 with a double-sided tape (not shown) over the entire surface except for a hole opened in a portion corresponding to the operation button 7. An operation switch 10 mounted on the operation board 9 is disposed at a position corresponding to the operation button 7. That is, the components are arranged in the order of the surface of the operation board 9, the operation switch 10, the operation button 7, and the display unit 6 in order from the inside to reach the operation surface operated by the user. Since an operation is input to the operation board 9 via the operation button 7 of the operation panel 8, the user can select the operation of the washing machine by pressing the operation button 7.

  The housing portion 5 includes a power supply board 11 that controls power supply to a load such as a motor (not shown) attached to the lower portion of the washing and dewatering tub 1. The operation board 9 and the power supply board 11 are enclosed in a boat-like protective case 13 (protective case) formed of flame-retardant ABS. The operation board 9 is protected on one side of the boat-like protective case 13 and the power supply board 11 is protected on the other side. The operation board 9 is not potted, and only the power supply board 11 is potted.

  The operation board 9 is fixed to an operation board attachment boss 14 provided on the operation panel 8 with an operation board attachment screw 15. The operation board mounting boss 14 is formed integrally with the operation panel 8 in the vicinity of the operation button 7. The operation board mounting screw 15 passes through a hole formed in the operation board 9 near the operation switch 10 and is fastened to the operation board mounting boss 14.

The display unit 6 corresponding to the operation button 7 has a convex shape. There are design gaps g1 and g2 between the display unit 6 and the operation button 7, and between the operation button 7 and the operation switch 10, respectively. Further, the operation switch 10 is set with a stroke s1 until the circuit is opened and closed. The convex height h1 of the display unit 6 is
It is configured to become a height. Thereby, when the display unit 6 is pushed down, the stroke of the operation switch 10 is pushed down by the stroke until the convex part is reversed regardless of the elongation of the material constituting the display unit 6.

  A part of the operation button 7 has a draining portion extending to a position further below the operation switch 10, and when water vapor is condensed on the back surface of the operation panel 8, water is prevented from dripping onto the operation switch 10. .

  The boat-like protective case 13 has a power supply board fixing claw 16 for fixing the power supply board 11 and locks the periphery of the power supply board 11.

  Near the entire periphery of the accommodating portion 5 is a first labyrinth portion 17 that comes into contact with the operation panel 8, and the operation panel 8 is fixed to the accommodating portion 5 with screws or claws. A drain hole 18 is provided at the bottom of the storage unit 5, and water that has entered the storage unit 5 from the first labyrinth unit 17 is drained downward from the washing machine when clothes are taken in and out of the washing / dehydrating tub 1. . The first waterproof means is composed of a weir portion 17 a and a drain hole 18. The dam portion 17a is an end portion located on the side of the first labyrinth portion 17 where the washing and dewatering tub 1 is disposed.

  A power switch 19 that is electrically connected to a commercial power source is attached to a part of the boat-like protective case 13 with a fixing claw (not shown). A microcomputer 20 that controls the washing machine is mounted on the power supply board 11.

A first metal cover 21 is insert-molded on the surface of the boat-like protective case 13 corresponding to the power supply substrate 11, that is, the surface sandwiched between the power supply substrate 11 and the operation substrate 9. In addition to the first metal cover 21, the second metal cover 2 covering the connector 22 side connected to the power supply substrate 11.
3 covers the power supply substrate 11.

  Since the power supply substrate 11 is covered with the first metal cover 21 and the second metal cover 23, the operating device can be configured compactly. Further, even when the high voltage circuit connected to the commercial power supply of the power supply board 11 breaks down and generates heat, it is covered with the first metal cover 21 and the second metal cover 23, so that the heated parts are included in the operating device. There is no contact with the outside, and the product can be designed safely even in the event of a failure. Furthermore, even if the lead parts of the components mounted on the operation board 9 and the power supply board 11 jump out to the back of the board, they contact the resin layer of the boat-like protective case 13 before coming into contact with the first metal cover 21. In this way, malfunctions and display errors can be easily prevented.

  After the power supply substrate 11 is fixed to the boat-like protective case 13, a moisture-proof potting agent 24 made of urethane resin or the like is filled, so that almost the entire power supply substrate 11 is covered. Thereby, the operation button 7, the operation switch 10, the operation board 9, the design gap, the first resin layer of the boat-like protective case 13, the first metal cover 21, the second of the boat-like protective case 13 are displayed from the display unit 6. The resin layer, the space filled with the potting agent 24, the power supply substrate 11, the space filled with the potting agent 24, the connector 22 accommodating portion, the second metal cover 23, the gap, and the bottom surface of the accommodating portion 5 are arranged in this order.

  The display unit 6, the operation panel 8, the operation board 9, and the power supply board 11 are inclined downward toward the front side from the clothes insertion port 4 to the front side of the washing machine body 2.

  The first labyrinth portion 17 is formed on a substantially entire circumference that is an end portion of the housing portion 5 and a first rib 25 that extends a part of the operation panel 8 downward, and sandwiches the first rib 25. And a first groove 26 having a substantially U-shaped cross section. By designing the gap between the first rib 25 and the first groove 26 to be narrow, a waterproof structure in which water does not easily enter is provided. The first labyrinth portion has the same effect even when the first rib 25 and a part of the first groove 26 are in contact with each other. In addition, the substantially entire circumference of the first labyrinth portion 17 means a structure in which a part thereof is missing due to wiring, screwing, or the like, and the labyrinth structure is not necessarily required over the entire circumference.

  Two portions of the operation panel mounting surface 28 formed by cutting out the first groove 26 are provided at portions corresponding to the left and right ends of the operation panel 8, and the operation panel 8 is attached by two operation panel mounting screws 27. It is fixed.

  The second labyrinth portion 29 (second waterproof means) constituted by the operation panel 8 and the boat-like protective case 13 includes a second rib 30 that extends a part of the operation panel 8 downward, and a boat. And a second groove 31 having a substantially U-shaped cross section, which is formed at the outer peripheral end of the protective case 13 and sandwiches the second rib 30. By designing the gap between the second rib 30 and the second groove 31 to be narrow, a waterproof structure in which water does not easily enter is provided. Note that the second labyrinth portion 29 has the same effect even when the second rib 30 and a part of the second groove 31 are in contact with each other.

The power supply board 11 equipped with the microcomputer 20 and the power switch 19 attached to the boat-like protective case 13 are mounted inside the first labyrinth part 17 and outside the area waterproofed by the second labyrinth part 29. ing. A portion where a lead wire for connecting the power switch 19 to a commercial power source is partially potted with an epoxy resin or the like in the power switch potting portion 44, and thus the power switch 19 is waterproofed. The lead wire is electrically connected to the power supply substrate 11 and is waterproofed with the potting agent 24. For this reason, it can waterproof with a simple structure and can raise the safety | security of a washing machine. A high current circuit that is connected to a commercial power source and flows a large current to a load such as a motor 12 is disposed on the power supply board 11, and a low current circuit such as a display unit such as an LED or an operation switch 10 is disposed on the operation board 9. Thus, the high current area and the low current area can be separated. For this reason, even if the operation board 9 is not waterproofed by potting, even if dew condensation occurs in the area of the second labyrinth portion 29 due to a temperature drop or the like, it is possible to easily prevent a short circuit of the high current circuit. it can.

  The second rib 30 is covered over the entire periphery along the edge of the operation substrate 9. Thereby, it is possible to prevent the splash from the flow of water flowing from the first labyrinth portion 17 through the drain hole 18 from entering the area of the operation substrate 9. In addition, even if foreign matter such as insects enters the accommodating portion 5 from the drain hole 18, it can be prevented from entering the area of the operation substrate 9. For this reason, the circuit of the operation board 9 is not short-circuited, and malfunctions can be prevented. The operation board 9 and the power supply board 11 are electrically connected by a flat cable 32. The second rib 30 covers the entire circumference along the outer periphery of the operation board 9, but in order to draw out the flat cable 32, a part of the second rib 30 is cut out to form a flat cable outlet 33. The flat cable outlet 33 is installed on the side opposite to the clothes insertion port 4 and on the side where the boat-like protective case 13 is inclined downward. The flat cable 32 is wrapped with a sealing material 34 made of a foamed rubber sheet having a closed cell structure to block a gap between the flat cable 32 and the flat cable outlet 33. Since the notch portion of the second rib 30 is closed without a gap by the sealing material 34, it is difficult for moisture to enter the operation substrate 9. Therefore, even if the second rib 30 has a notch, the same effect as covering the entire periphery along the outer periphery of the operation substrate 9 is obtained.

The operation panel mounting surface 28 is formed by cutting out a part of the first groove 26, and the operation panel mounting surface 28 constituting a part of the first groove 26 is the lowest point of the first groove 26. Yes. The lowest point of the first groove 26 is configured to be lower than the highest point of the second groove 31. The upper end of the first groove 26, the upper end of the second groove 31, the operation panel mounting surface 28 constituting a part of the first groove 26, and the drain hole 18 are formed in order from the highest height. Further, when viewed from the clothes insertion port 4, the weir portion 17 a of the first labyrinth portion 17, the second labyrinth portion 29, the operation board 9, and the flat cable outlet 33 are configured to be distant from each other. Since the operation panel mounting surface 28 is the lowest point of the first groove 26, even if water enters beyond the weir portion 17a as the first waterproof means, the amount of water to enter should be small. It flows only from the mounting surface 28 part, does not flow in from the uppermost point of the first groove 26, and the uppermost point of the second groove 31 is higher than the operation panel mounting surface 28. The area of the operation substrate 9 can be waterproofed.

  As described above, since the operation board 9 can be double waterproofed, it is not necessary to waterproof the operation board 9 with a potting agent. Accordingly, it is possible to suppress the warpage of components without receiving thermal stress or mechanical stress due to shrinkage. For this reason, the positions of the operation panel 8 and the operation board 9 are not easily displaced. In addition, the positions of the operation button 7 and the display unit 6 mounted on the operation panel 8 and the operation switch 10 mounted on the operation board 9 can be stabilized, and stroke variation when the user operates the operation button 7 is achieved. Can be suppressed and the operating force can be stabilized.

The upper part of the washing / dehydrating tub 1 and the water receiving tub 40 is opened in a circular shape. A ring-shaped water receiving tank cover 35 is attached to the upper end, which is an open portion of the water receiving tank 40. The drain hole 18 is disposed above the water receiving tank cover 35 and outside the substantially circular edge portion of the water receiving tank cover 35, so that the water drained from the drain hole 18 can be drained from the water receiving tank cover. 35 and the range of the washing and dewatering tub 1 are prevented from dripping. Due to such a configuration, even when foam generated in the washing / dehydrating tub 1 overflows beyond the water receiving tank cover 35 during washing, before the water draining hole 18 is reached, the washing machine body 2 Fall down. For this reason, bubbles do not enter the accommodating portion 5 from the drain hole 18, and bubbles do not enter the area of the operation board 9 from the gap between the first boat-like protective case 13 and the operation panel 8. The circuit of the operation board 9 is not short-circuited, and erroneous display and malfunction can be prevented. Further, since the drain hole 18 is opened at an angle of about 45 degrees and toward the lower side opposite to the washing and dewatering tub 1, that is, toward the lower side on the front side, the water collected at the bottom of the housing part 5 is efficiently used. It can drain well. Furthermore, when the foam containing the detergent component generated from the washing and dewatering tub 1 overflows over the water receiving tank cover 35, the foam traveling on the back surface of the storage section 5 is guided downward by the inclined surface of about 45 degrees, and the storage section Intrusion of bubbles into 5 can be prevented.

In the dam portion 17a, the length of the portion where the first rib 25 is held by the first groove 26 is longer than the width of the first groove 26, and the passage of the water to be passed through is narrowed. Longer and higher waterproof performance.
The length of the portion where the second rib 30 is sandwiched by the second groove 31 is longer than the width of the second groove 31, and the water passage to be passed through is narrowed and lengthened. The waterproof performance is increased.

  Design gaps are provided between the first rib 25 and the first groove 26 in the dam portion 17a and between the operation panel 8 and the operation panel mounting surface 28 so that components can be attached and detached. The total cross-sectional area S2 of the drain hole 18 is designed to be larger than the total cross-sectional area S1 of these total gaps.

In the weir portion 17a, the area of the surface perpendicular to the water flow flowing between the first rib 25 and the first groove 26 is S01, and the surface perpendicular to the water flow flowing between the operation panel 8 and the operation panel mounting surface 28. Is S02, and the height of the upper end of the first rib 25 and the operation panel mounting surface 28 is h01, water flows out from S01 when the flow rate Q02 flowing through S02 becomes (Equation 1).
However, the flow velocity of the water flowing through S01 is slower than the flow velocity of the water flowing through S02 because the height is high.

Since the area S2 of the surface perpendicular to the water flow through the drain hole 18 is larger than the total area of S01 and S02, S1, the flow rate flowing into S1 and flowing into the accommodating portion 5 is Q1, and the flow velocity is V1. On the other hand, when S2 flows, the flow rate drained from the container 5 is Q2, and the flow rate is V2,
It becomes.
If the amount of water flowing from S1 into the container 5 is drained only from S2,
Q1 = Q2, but since S1 <S2,
It becomes.
The flow velocities V1 and V2 are H1 and H2, respectively.
So,
It becomes.

  Therefore, since the water level H2 accumulated in the accommodating part 5 is always lower than the water level H1 of the first labyrinth part 17, the operation board 9 can be reliably and efficiently waterproofed.

Even if H1 and H2 become the same height for some reason, (Equation 6), (Equation 7)
It becomes. Since S1 <S2,
Thus, Q2 drained from the drain hole 18 becomes larger than the flow rate Q1 flowing into the accommodating part 5, and the water level H2 inside the accommodating part 5 becomes low. That is, the amount of water that can be discharged from the drain hole 18 per unit time is larger than the amount of water that can enter from the weir portion 17a. For this reason, the operation board 9 can be reliably waterproofed efficiently.

  When the water flows through the gap between the first rib 25 and the first groove 26 due to the labyrinth structure of the weir portion 17a, the flow path can be narrowed and lengthened with a compact configuration, so the flow rate can be reduced. The operation board 9 can be waterproofed efficiently. If the position of the first rib 25 is shifted to the front of the washing machine main body 2 due to variations in parts, for example, the gap between the first rib 25 and the first groove 26 on the front side of the washing machine main body 2 is narrowed. Since it is difficult for water to enter, the waterproof effect does not decrease. Similarly, even if it is displaced backward, the gap on the rear side of the washing machine main body 2 is narrowed and water does not easily enter, so the waterproofing effect does not deteriorate. On the other hand, the operation board 9 can be efficiently waterproofed by waterproofing with a labyrinth structure.

  As described above, the weir portion 17a and the drainage hole 18 make it difficult for water to collect in the accommodating portion 5, and the second labyrinth portion 29 prevents the water flowing from the first labyrinth portion 17 from flowing. Since it is possible to prevent scattered water and foreign matter such as water vapor and insects entering from the drain hole 18 from entering the operation substrate 9, it is not necessary to waterproof the operation substrate 9 by potting or the like. For this reason, the operation board 9 is not subjected to thermal stress generated in the potting process or mechanical stress generated during potting hardening, and the warpage of components can be suppressed. For this reason, the positions of the operation panel 8 and the operation board 9 are not easily displaced. In addition, the positions of the operation button 7 and the display unit 6 mounted on the operation panel 8 and the operation switch 10 mounted on the operation board 9 can be stabilized, and stroke variation when the user operates the operation button 7 is achieved. Can be suppressed and the operating force can be stabilized.

Further, when the operation board 9 is potted, it is necessary to increase the operation force of the operation button 7 due to warping of the parts, and there is a problem in operability. Therefore, if the gap g2 between the operation button 7 and the operation switch 10 is reduced in order to lighten the operation force, the operation button is erroneously applied to the vicinity of the operation button 7 portion of the operation panel 8 by leaning on the washing machine or the like. Even if 7 is not pressed, the gap with the operation switch 10 is reduced, and malfunction is likely to occur. Therefore, in this embodiment, the operation board 9 is not potted, and the operation board 9 is attached to the operation panel 8 by the operation board attachment boss 14 and the operation board attachment screw 15 near the operation switch 10. It is supposed to be fixed directly. By not potting the operation board 9, the operation board 9 can be easily fixed directly to the operation panel 8. By directly fixing, the operation button 7 and the operation switch 10 are less likely to be displaced, and by stabilizing the dimensions, the operation force can be stabilized and malfunctions can be reduced.

  Further, the microcomputer 20 that has a narrow pitch between terminals and is likely to malfunction due to slight moisture, and the power switch 19 that is connected to a commercial power source and needs to be waterproof to prevent tracking are not attached to the operation board 9. Even without taking water-proof measures by potting, it is hard to malfunction and can easily prevent tracking. Furthermore, since the power supply board 11 is potted and the operation board 9 connected to the power supply board 11 by the flat cable 32 is not potted, only one boat-like protective case 13 is required for potting the power supply board 11. For this reason, manufacture is simple and the operation board 9, the power supply board 11, and the boat-like protective case 13 can be accommodated in the accommodating part 5 compactly.

  Further, the first labyrinth portion 17 can limit the amount of water that enters, and by draining the water from the drain hole 18, it is difficult for water to collect in the accommodating portion 5, and the water can be efficiently waterproofed. Similarly, since the second labyrinth portion 29 has a labyrinth structure, the amount of water that enters can be restricted, and the water that has flowed into the labyrinth is from the flat cable outlet 33 inclined downward. By flowing downward, water is not allowed to flow to the operation substrate 9 side, so that it can be waterproofed efficiently.

  A power switch mounting boss 36 formed integrally with the operation panel 8 is provided in the vicinity of the power switch 19 of the boat-shaped protective case 13, and the boat-shaped protective case 13 is fixed to the operation panel 8 by a power switch mounting screw 37. . A power switch positioning pin 38 (power switch positioning means) formed integrally with the boat-like protective case 13 is provided at a portion corresponding to the power switch 19 of the boat-like protective case 13. The power switch positioning pin 38 is fitted in a hole formed in the power switch 19 so that the power switch 19 is not displaced. An operation switch positioning pin 39 (operation switch positioning means) formed integrally with the boat-like protective case 13 is provided at a portion corresponding to the operation switch 10 of the boat-like protective case 13. The operation switch positioning pin 39 is in contact with the operation board 9 in the vicinity of the operation switch 10 so that the operation switch 10 does not move downward when the operation button 7 is pushed down.

  Since the power switch positioning pin 38 and the operation switch positioning pin 39 are integrally formed in the boat-like protective case 13, the positions of the power switch 19 and the operation switch 10 are unlikely to change when the operation button 7 is depressed. Further, since the operation board 9 and the boat-like protective case 13 are both screwed to the operation panel 8 by the operation board attachment screw 15 and the power switch attachment screw 37, the operation panel 8, the operation switch 10, and the power switch Since the distance from 19 is not affected by dimensional variations other than the operation panel 8, the operation button 7, and the boat-like protective case 13, the operation force can be further stabilized.

  Further, by molding at least one of the housing part 5, the operation panel 8, and the boat-like protective case 13 with a flame retardant resin, when the power supply substrate 11 breaks down, it is prevented from burning out of the product. Can do.

  The first metal cover 21 and the second metal cover 23 are both described as metal plates. However, the present invention is not limited to this, and if any one of the first metal cover 21 and the second metal cover 23 is made of a flame retardant material or a non-flammable material, At this time, there is no restriction on the assembly order, and the design can be facilitated.

  Although the operation button 7 has been described as an integral configuration with the operation panel 8, the present invention is not limited to this, and if the operation button 7 is configured as a separate part with a transparent material, design restrictions are eliminated and the design can be facilitated.

  In the present embodiment, the power supply device and the operation device of the present invention are installed in a vertical washing machine, but are not limited thereto, a dryer, a washing dryer, a drum-type washing machine, a dishwasher, etc. If it is equipment related to water, there is the same effect.

  In addition, the power supply device and the operation device are configured to be provided on the upper surface of the upper shell. However, the present invention is not limited to this. Can be installed in an appropriate place.

(Embodiment 2)
FIG. 7 is a cross-sectional view of a main part of the washing machine and its power supply device according to Embodiment 2 of the present invention. Instead of insert-molding the first metal cover, a mica plate 41 is mounted between the boat-like protective case 13 and the power supply substrate 11. The other embodiments use the first embodiment.

  The power supply device mounted on the washing machine in the present embodiment includes a power supply board 11, a boat-like protective case 13 (protective case) that protects the power supply board, a bottom portion of the boat-like protective case 13, and the power supply board 11. And a mica plate 41 as a non-combustible material provided therebetween. In addition, the operation device mounted on the washing machine in the present embodiment includes an operation panel 8 provided on the outside of the housing, an operation board 9 for inputting an operation, a power supply board 1, a power supply board 11, and an operation board. 9 and a boat-like protective case 13 for protecting 9. The same components are used for the boat-like protective case 13 that houses and protects the operation board 9 and the power supply board 11. The mica plate 41 is disposed between the surface of the boat-like protective case 13 in which the power supply board 11 is accommodated and the power supply board 11.

  The mica plate 41 has a good insulation performance even in a high temperature state of, for example, 500 ° C. or higher, so that the insulation performance can be ensured even when the component temperature rises due to an increase in the output of the product. Even if the leads come into contact with the mica plate 41, it is difficult for the insulation resistance to decrease between the leads, and the erroneous display and malfunction of the product can be prevented. For this reason, even when the high voltage circuit connected to the commercial power supply of the power supply board 11 breaks down and generates heat, the insulation performance can be ensured.

  With such a configuration, even if the lead portions of the components mounted on the operation board 9 and the power supply board 11 jump out to the back of the board, they contact the resin layer of the boat-like protective case 13 or the mica plate 41, so that the resistance between the leads Therefore, malfunctions and display errors can be easily prevented.

  When manufacturing a power supply device to be mounted on a washing machine, the boat-like protective case 13 is placed horizontally, then the mica plate 41 is placed, and finally the power supply board 11 is fixed to the power supply board fixing claw 16 of the boat-like protective case 13. After that, the potting agent 24 is poured, put into a high temperature bath, and the potting agent 24 is dried and cured. For this reason, even the thin and brittle mica plate 41 is fixed by the potting agent 24 after potting, so that there is no quality deterioration due to deformation or peeling of the mica plate 41, and insulation performance can be ensured. In general, the mica plate 41 tends to cause insulation deterioration by absorbing moisture in the air. However, since the mica plate 41 is disconnected from the air by the potting agent 24, the product can be safely designed without quality deterioration due to moisture absorption.

  Moreover, since the power supply board 11 is accommodated and protected on one side of the boat-like protective case 13 and the operation board 9 is accommodated and protected on the back side, the operating device can be made compact, and the entire product can be made compact. Can be

The power supply board 11 is provided with a confirmation window 42 (through hole) at a location facing the position where the mica plate 41 is provided. A part of the mica plate 41 extends beyond the end of the power supply substrate 11. In the extended range, a confirmation gap 43 (through hole) is formed through which the mica plate 41 can be observed from the end of the power supply substrate 11. The mica plate 41 is substantially white, the boat-like protective case 13 is substantially black, and the potting agent 24 is substantially transparent. A gap g3 between the power supply substrate 11 and the mica plate 41 is shorter than the diameter d1 of the confirmation window 42. The mica plate 41 and the boat-like protective case 13 are configured to have different colors. Since a part of the mica plate 41 can be visually confirmed from the confirmation gap 43, forgetting to attach the mica plate 41 can be prevented. That is, since the confirmation window 42 is opened in the power supply substrate 11 and the substantially white mica plate 41 can be observed from here through the substantially transparent potting agent 24, the mica plate 41 is visually observed during the production of the power supply device. Confirmation, that is, confirming that the mica plate 41 is not substantially black but the mica plate 41 is substantially white, so that it is possible to prevent forgetting to attach the mica plate 41. Further, since the gap g3 between the power supply substrate 11 and the mica plate 41 is shorter than the diameter d1 of the confirmation window 42, the illumination light at the manufacturing site reaches the surface of the mica plate 41 through the confirmation window 42 during the production. It can be confirmed visually.

  In the present embodiment, the power supply device and the operation device of the present invention are installed in a vertical washing machine, but are not limited thereto, a dryer, a washing dryer, a drum-type washing machine, a dishwasher, etc. If it is equipment related to water, there is the same effect.

  In addition, the power supply device and the operation device are configured to be provided on the upper surface of the upper shell. However, the present invention is not limited to this. Can be installed in an appropriate place.

  As described above, the washing machine according to the present invention waterproofs the operation board and prevents bubbles generated during washing from entering the area of the operation board, thereby preventing erroneous display and malfunction. Therefore, it is useful as a washing machine having an operation part in a part of the outer shell.

1 Washing and dewatering tank 3 Upper shell (outer of washing machine)
5 Housing 7 Operation Button 8 Operation Panel 9 Operation Board 10 Operation Switch 11 Power Supply Board 13 Boat-shaped Protective Case (Protective Case)
17 1st labyrinth part 17a Weir part 18 Drain hole 19 Power switch 21 1st metal cover 23 2nd metal cover 24 Potting agent 25 1st rib 26 1st groove | channel 29 2nd labyrinth part 30 2nd Rib 31 second groove 35 water receiving tank cover 38 power switch positioning pin (power switch positioning means)
39 Operation switch positioning pin (Operation switch positioning means)
40 Water receiving tank 41 Mica plate (non-combustible material)
42 Confirmation window (through hole)
43 Clearance for confirmation (through hole)
44 Power switch potting section

Claims (3)

A washing and dewatering tub for storing laundry;
A water receiving tub that houses the washing and dewatering tub;
A water receiving tank cover covering the upper end of the water receiving tank;
An operation board on which an operation is input;
A protective case for protecting the operation board;
An outer part of the washing machine and provided above the water receiving tub to accommodate the protective case, and a storage part having a bottom part;
A drain hole provided in the bottom,
The accommodating portion is provided with waterproof means for waterproofing the operation board,
The drain hole is a washing machine provided outside the outer periphery of the water receiving tank cover. Further equipped with an operation panel,
The waterproof means is a labyrinth structure constituted by a groove provided in the protective case and a rib provided in the operation panel,
The washing machine according to claim 1, wherein the groove is provided over the entire circumference surrounding the operation board. Further equipped with a waterproof power supply board,
The washing machine according to claim 1 or 2, wherein the power supply board is disposed outside an area that is waterproofed by waterproof means.