JP2019013495A - Washing machine - Google Patents

Abstract

To provide a washing machine having a structure in which a power supply board and a control board are compactly integrated and each dimension in the left/right direction of the power supply board and the control board is sufficiently secured.SOLUTION: The washing machine comprises a top cover 5 provided on an upper part of an outer case 2 and an operation panel 7 provided on a front upper surface of the top cover 5. Inside the top cover 5, a unit cover 9 is provided so as to cover an electric component unit 8. The electric component unit 8 is configured by integrating a control board unit 21 having a control board 24 with a control circuit and a display circuit mounted thereon and a power supply board unit 22 having a power supply board 27 with a power supply circuit mounted thereon back to back.SELECTED DRAWING: Figure 3

Description

  An embodiment of the present invention relates to a washing machine in which an electrical component is disposed inside a front portion of a top cover.

  For example, an operation panel is disposed on the upper surface of the front portion of the top cover of the fully automatic washing machine. Inside the front part of the top cover, a control board on which a control circuit for controlling the entire fully automatic washing machine and the like is mounted is disposed below the operation panel. There are known a configuration in which a power supply board on which a power supply circuit of a fully automatic washing machine is mounted is disposed inside the rear portion of the top cover, a configuration in which the power supply substrate is disposed in the lower part inside the outer box of the fully automatic washing machine, and the like.

  Further, it is desired to realize a configuration in which the power supply board and the control board are compactly arranged by arranging the power supply board close to the control board. For example, a washing machine described in Patent Document 1 is known. In this washing machine, a power supply board and a control board are arranged side by side in the left-right direction. However, in this configuration, the horizontal dimension of the configuration in which the power supply board and the control board are arranged in the horizontal direction, i.e., the horizontal dimension of the top cover and the washing machine main body is increased. Therefore, there is a possibility that the mounting design of the power supply circuit and the control circuit may be restricted.

JP-A-8-164296

  Therefore, while the power supply board and the control board are compactly assembled, the left and right dimensions of the power supply board and the control board can be sufficiently secured, and the structure of the washing machine body can be reduced in size. Provide a washing machine that can.

  The washing machine of the present embodiment includes an outer box in which a water tub is accommodated, a top cover provided on an upper portion of the outer box, and an operation panel provided on an upper surface of a front portion of the top cover. An electrical component unit provided below the operation panel inside the top cover, and a unit cover provided so as to cover the electrical component unit inside the top cover, the electrical component unit comprising: The control board unit having the control board on which the control circuit and the display circuit are mounted and the power board unit having the power board on which the power circuit is mounted are integrated back to back.

Broken side view of the washing machine according to the first embodiment Disassembled perspective view of the top cover, electrical component unit, and unit cover Partial vertical side view of top cover, electrical component unit, and unit cover Perspective view of the electrical component unit viewed from the bottom side Partial vertical rear view of top cover, electrical component unit, and unit cover

(First embodiment)
A washing machine 1 illustrated in FIG. 1 is a so-called washing / drying machine having a washing function for washing laundry and a drying function for drying laundry. The washing machine 1 is a so-called vertical type fully automatic washing machine in which the rotation center axis of the washing tub extends in the vertical direction. The washing machine 1 includes a bottomed cylindrical water tank 3 having an open upper surface inside an outer box 2 constituting the outer shell. The water tank 3 is elastically supported by the elastic suspension mechanism 4.

  Further, a top cover 5 is disposed at the upper part of the outer box 2, and the top cover 5 is provided above the water tub 3 so that, for example, a washable lid 6 that can be folded in two can be opened and closed. ing. The washing lid 6 is not limited to the folding type, and may be any washing lid that can open and close the upper part of the water tank 3. The engaging portion (not shown) provided at the front portion of the top cover 5 is engaged with the engaged portion (not shown) provided at the upper front portion of the outer box 2, and the rear portion of the top cover 5 is removed. The top cover 5 is attached to the outer box 2 by screwing it to the upper rear part of the box 2.

  An operation panel 7 is disposed on the upper surface of the front portion of the top cover 5, and an electrical component unit 8 is disposed below the operation panel 7 inside the top cover 5. As shown in FIGS. 2 and 3, the lower surface and the outer peripheral portion of the electrical component unit 8 are covered with a unit cover 9 made of, for example, a resin having a shallow container shape as a whole. The specific configurations of the electrical component unit 8 and the unit cover 9 will be described later.

  In addition, a water supply unit (not shown) including a water supply valve (not shown) and the like is provided inside the outer box 2. The water supplied from the water supply unit is stored inside the water tank 3. In addition, a drainage unit 11 including a drainage valve 10 and the like is provided inside the outer box 2. The water in the aquarium 3 is drained out of the apparatus by the drainage section 11. Further, inside the water tub 3, a bottomed cylindrical washing tub 12 having an open upper surface is rotatably provided.

  The washing tub 12 is configured to rotate around a vertical axis, and serves as a washing tub for washing the laundry and a washing tub in the rinsing step, and a dehydration tub in the dehydration step for dehydrating the laundry. It is also used. In addition, the water tub 3 that accommodates the washing tub 12 functions as a drying chamber in which the laundry to be dried is accommodated in the drying process of drying the laundry. A pulsator 13 is rotatably provided at the bottom inside the washing tub 12.

  A driving unit 14 for rotating the washing tub 12 and the pulsator 13 is provided in the lower central portion of the water tub 3. The drive unit 14 includes a drive motor 15 and a clutch mechanism (not shown) that switches between a washing / rinsing operation and a dehydrating operation.

  A water tank cover 16 is attached to the upper part of the water tank 3. An opening is formed in the water tank cover 16, and this opening is opened and closed by an inner lid 17 provided in the water tank cover 16. The user can put the laundry in and out of the washing tub 12 through the opening by opening the laundry lid 6 on the upper part of the outer box 2 and opening the inner lid 17.

  As shown in FIGS. 2, 3 and 4, the electrical component unit 8 is configured by stacking the control board unit 21 and the power board unit 22 vertically, that is, by integrating them back to back. is there. The control board unit 21 includes a control unit case 23 made of, for example, a resin having a shallow container shape as a whole, and a control board 24 accommodated and fixed in the control unit case 23.

  The control board 24 is composed of, for example, a printed wiring board, on which various electrical components constituting the control circuit and various electrical parts (such as LEDs) constituting the display circuit are mounted. The control board 24 is fixed to the control unit case 23 by, for example, screwing or engagement. On the upper surface of the control board 24, for example, an LED holder 25 made of resin for holding the LEDs of the display circuit is provided. The LED holder 25 is attached to the control board 24 by, for example, screwing or engagement.

  Further, the power supply board unit 22 includes a power supply unit case 26 made of, for example, a resin having a shallow container shape as a whole, and a power supply board 27 accommodated and fixed in the power supply unit case 26. The power supply board 27 is composed of, for example, a printed wiring board, on which various electric components constituting the power supply circuit are mounted. The power supply board 27 is fixed to the power supply unit case 26 by, for example, screwing or engagement.

  When the control board unit 21 and the power board unit 22 are connected, the control board unit 21 and the power board unit 22 are placed back to back, that is, the control board 24 and the power board 27 are placed back to back. A plurality of engaging portions 23 a provided on the outer peripheral portion of the unit case 23 are engaged with engaged portions 26 a provided on the outer peripheral portion of the power supply unit case 26, and are screwed, for example. Thereby, the control board unit 21 and the power supply board unit 22 are connected, and the electrical component unit 8 is comprised.

  The electrical component unit 8 configured as described above is attached to the front portion in the top cover 5. In this case, the LED holder 25 of the electrical component unit 8 is brought into contact with the lower surface of the operation panel 7 of the top cover 5, and the electrical component unit 8 is engaged with the top cover 5 and screwed, for example. Then, with the electrical component unit 8 attached to the top cover 5, the electrical component unit 8 is covered with the unit cover 9, and the unit cover 9 is engaged with the top cover 5 and screwed, for example. As a result, as shown in FIGS. 3 and 5, the electrical component unit 8 and the unit cover 9 are attached to the top cover 5.

  Here, as shown in FIG. 2, for example, three ribs 28, 29, and 30 are formed on the inner bottom surface of the unit cover 9, and for example, water drain holes 31 that are many openings are formed. ing. The height dimension of the ribs 28, 29, and 30 is set to an appropriate value of 5 mm or more, for example. The right ends of the ribs 28, 29, and 30 in FIG. 2 are continuous with the right peripheral wall portion of the unit cover 9 in FIG. 2, and the left ends of the ribs 28, 29, and 30 in FIG. A portion without a rib, that is, a notch 32 is formed between the left peripheral wall portion and the left peripheral wall portion. In this embodiment, the position of the notch 32 is the left end of the ribs 28, 29, 30. However, the present invention is not limited to this, and any part of the ribs 28, 29, 30 can be used. Can be formed. Further, the distances d1, d2 between the ribs 28, 29, 30 are set to appropriate values of, for example, 30 mm or less.

  4 and 5, when the electrical component unit 8 and the unit cover 9 are attached to the top cover 5, the lead wires 33 led out from the power supply board unit 22 of the electrical component unit 8 are ribs 28, It is configured to be placed on 29 and 30. In this case, the ribs 28, 29, and 30 are provided so as to be in a direction orthogonal to or intersecting the lead wire 33, for example. Thus, the lead wire 33 is lifted from the bottom surface of the unit cover 9 and is not in contact with the bottom surface. According to this configuration, since the washing water has entered the unit cover 9, the lead wire 33 is lifted from the bottom surface of the unit cover 9 when the inner bottom portion of the unit cover 9 becomes wet with the washing water. Therefore, it is possible to reliably prevent the occurrence of a situation in which the lead wire 33 gets wet with the washing water (that is, the washing water adheres to the lead wire 32).

  And in the case of the said structure, since the height dimension of the ribs 28, 29, and 30 was set to 5 mm or more, the lead wire 33 can be reliably lifted from the bottom face of the unit cover 9. FIG. Further, since the distances d1 and d2 between the ribs 28, 29, and 30 are set to 30 mm or less, the lead wire 33 can be prevented from loosening, so that the lead wire 33 can further contact the bottom surface of the unit cover 9. Can be prevented. Further, since the ribs 28, 29, 30 are provided along the direction orthogonal to or intersecting with the lead wire 33, the lead wire 33 falls off from the ribs 28, 29, 30 and the unit cover 9. It is possible to further prevent contact with the bottom surface.

  In addition, since many drain holes 31 are provided in the unit cover 9, the washing water that has entered the unit cover 9 can be discharged through the drain holes 31. Further, since the notch 32 is formed in a part of the ribs 28, 29, 30, the washing water accumulated between the ribs 28, 29, 30 can be guided to the drain hole 31 through the notch 32, The washing water can be discharged through the drain hole 31.

  In the present embodiment, the electrical component unit 8 is provided below the operation panel 7 inside the top cover 5, and the unit cover 9 is provided inside the top cover 5 so as to cover the electrical component unit 8. 8, the control board unit 21 having the control board 24 and the power board unit 22 having the power board 27 are integrated back to back. According to this configuration, although the power supply board 27 and the control board 24 are configured in a compact manner, the left and right dimensions of the power supply board 27 and the control board 24 can be sufficiently secured, and the top cover 5 Further, since it is not necessary to increase the horizontal dimension of the washing machine body, the structure of the washing machine body can be reduced in size.

  Further, in this embodiment, since the electrical component unit 8 in which the power supply board 27 and the control board 24 are integrated in a compact manner is provided, an abnormality occurs in the power supply board 27 or the control board 24 and the washing machine needs to be repaired. In this case, if the front portion of the top cover 5 is lifted and the unit cover 9 is removed, the electrical component unit 8 can be easily removed from the top cover 5 and replaced.

(Other embodiments)
In addition to the embodiment described above, the following configuration may be added.
The number of ribs 28, 29, and 30 is three, but is not limited to this, and four or more ribs 28 or two may be provided. Moreover, although it applied to the washing-drying machine provided with the washing function and the drying function, you may apply to the fully automatic washing machine which does not have a drying function.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  In the drawings, 1 is a washing machine, 3 is a water tub, 5 is a top cover, 7 is an operation panel, 8 is an electrical component unit, 9 is a unit cover, 12 is a washing tub, 21 is a control board unit, 22 is a power board unit, Reference numeral 23 is a control unit case, 24 is a control board, 26 is a power supply unit case, 27 is a power supply board, 28, 29 and 30 are ribs, 31 is a drain hole, 32 is a notch, and 33 is a lead wire.

Claims (4)

A washing machine comprising: an outer box in which a water tank is accommodated; a top cover provided on an upper portion of the outer box; and an operation panel provided on a front upper surface of the top cover,
An electrical component unit provided below the operation panel inside the top cover;
A unit cover provided to cover the electrical component unit inside the top cover;
The electrical component unit includes a control board unit having a control board on which a control circuit and a display circuit are mounted, and a power board unit having a power board on which a power circuit is mounted, integrated back to back. .   The washing machine according to claim 1, further comprising a plurality of ribs provided on an inner bottom surface of the unit cover.   By engaging a plurality of engaging portions provided on the outer peripheral portion of the control board unit with engaged portions provided on the outer peripheral portion of the power board unit, the control board unit and the power board unit are connected. The washing machine according to claim 1 or 2, which is integrated. The washing machine according to claim 3, wherein the unit cover is attached to the top cover so as to cover the electrical component unit in a state where the electrical component unit is attached to a front portion in the top cover.

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