JP2003103091A - Drum-type washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drum-type washing machine which enables simple connections to the control unit from external devices as well as an easy inspection of the circuit board, and contributes to the downsizing of the entire control unit. SOLUTION: A case 10 houses a printed wiring circuit board 11, which forms a control unit 9. Furthermore, it is provided with a cover 14 protruding from the top of the front board 10b to the right side. On the printed wiring circuit board 11, electronic parts including a diode bridge of direct current circuit to convert AC input power into DC, a chalk coil, an inverter circuit to drive a motor, as a triac to switch on or off loaded devices, and the like are contained. The printed wiring circuit board 11 is connected to connectors 19 to 25 via lead wires 26. These connectors 19 to 25 are mounted on the front board 10b of the case 10, which faces an inspection window.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drum type washing machine having an improved structure related to a control unit.

[0002]

In a drum type washing machine, an inspection port is formed in, for example, the front surface of an outer box having a drum inside, and a control is provided in a portion facing the inspection port inside the outer box. There is a configuration provided with a unit. In this case, the control unit is configured by housing the circuit board in the case. A DC power supply circuit for converting AC power to DC, an inverter control circuit for driving a motor, a switch element for turning on / off a load device to which AC power is applied, and the like are mounted on the circuit board. On this circuit board, a plurality of connectors (unit side connectors) for connecting to other devices such as a motor, a load side connector such as a water supply valve, a drain valve, etc. (unit side connectors) are mounted in a scattered state in a gap between electronic components. ing.

However, in the circuit board, it is difficult to connect the connector on the load device side to the connector on the unit side in the gap between the electronic parts, and because there are many connectors on the circuit board, the circuit board is inspected. Becomes complicated. Furthermore, the circuit board becomes large-sized and the control unit becomes large-sized, resulting in a large occupied space inside the outer box. For this reason, there is also a problem that the control unit tends to get in the way when inspecting the motor, the drain valve, etc. inside the outer box.

The present invention has been made in view of the above circumstances, and an object thereof is to simplify the connection of an external device to a control unit, to easily inspect a circuit board, and to reduce the size of the entire control unit. (EN) It is possible to provide a drum type washing machine which can contribute to the realization of a drum type washing machine, occupy less space in the outer box, and facilitate inspection work.

[0005]

According to a first aspect of the present invention, there is provided an outer box having a drum inside and an inspection port at a predetermined portion, and a circuit board arranged inside the case. A control unit provided so as to face the inspection port inside the box, the control unit, a surface of the case facing the inspection port, a plurality of for connecting the circuit board and other devices It is characterized in that a connector is arranged.

According to this, since the plurality of connectors are arranged in the case, the number of connectors on the circuit board can be reduced, the circuit board can be easily inspected, and the circuit board and thus the control unit can be miniaturized. As a result, the space occupied in the outer box can be reduced, and it is possible to connect to other devices without being disturbed by the electronic components of the circuit board, and the inspection work can be facilitated.

According to a second aspect of the present invention, a plurality of lead wires are connected from the circuit board to the connector, and the plurality of lead wires in the connector are lead wires which are electrically connected to one power supply terminal of the input power supply. The feature is that both the lead wire that is electrically connected to the other power supply terminal are not included. According to this, even if the connector is in a poor insulation state due to, for example, getting wet with water, the input power source is not short-circuited.

The invention of claim 3 is characterized in that a plurality of connectors have the same shape, and the connectors of the same shape have different colors. According to this, the connectors having the same shape can be distinguished by the difference in color.

According to a fourth aspect of the present invention, a cover is formed on the case from the upper part of the surface on which the plurality of connectors are present to one side, and the case is mounted from the upper part of the surface to the other side. A cover member is provided, and the cover member and the cover portion surround the plurality of connectors. According to this
The plurality of connectors can be surrounded by the cover portion and the cover member so as to be wrapped from the upper portion to both side portions, and the connectors can be prevented from getting wet with water.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. First, FIGS. 2 and 3 show the overall appearance of the drum type washing machine. A door 2 is provided on the front plate 1a of the outer box 1, and an operation panel is provided on the upper part of the front plate 1a. 3 is provided. An inspection port 4 (see FIG. 4) is formed in the lower portion of the front plate portion 1a of the outer box 1, and the inspection port 4 is opened and closed by a lid 5. Further, a water tank 6 is provided inside the outer box 1.
And a drum 7 is rotatably provided inside the water tank 6. Further, a motor 8 for rotating the drum 7 is provided at the rear of the water tank 6. The water tank 6 and the drum 7 are elastically supported in a slightly downwardly downward shape.

A control unit 9 is arranged near the right side of the lower inner part of the outer box 1. As shown in FIGS. 1, 5, and 6, the control unit 9 is configured by arranging a printed wiring board 11, which is a circuit board, inside a plastic case 10. Case 10 is
The leg portion 12 is formed on the lower surface of the lower plate portion 10a in a rectangular shape. Further, in this case 10, a plurality of, for example, seven connector arrangement holes 13a to 13g are formed in the front plate portion 10b which is a surface facing the inspection port 4. Further, a cover portion 14 is formed so as to project from the upper portion of the front plate portion 10b to the right side portion (one side portion).

As shown in FIG. 5, a mounting plate portion 15 is formed on the back plate portion of the case 10 so as to project therefrom, and a plurality of screw holes 15a are formed in the mounting plate portion 15.

On the printed wiring board 11, electronic parts such as a diode bridge and a choke coil of a DC power supply circuit for converting an AC input power supply into a DC power supply, an inverter circuit for driving a motor, and a triac 16 for turning on / off a load device.
Electronic components 7, 7, etc. (see FIG. 12) are mounted. The printed wiring board 11 has connectors 19-2.
5 is connected via a lead wire 26.

The lead wire 26 and the printed wiring board 11
The connection with is a so-called board-in terminal, an example of which is shown in FIGS. In FIG. 7, a board-in terminal 26 a is connected to each lead wire 26, and this is inserted and connected to a connection hole 11 a of the printed wiring board 11. Further, in FIG. 8, the board-in terminals 26 a connected to the respective lead wires 26 are attached to the holder 27.
Printed circuit board 1 held by
It is adapted to be connected to one plurality of connection holes 11a.

The connectors 19 to 25 are fitted in the connector placement holes 13a to 13g from the inside of the case 10 toward the inspection port 4 side, respectively, to engage the engaging means 1 with each other.
It is provided on the front plate portion 10b while being prevented from coming off by 9a to 25a. The connector 22 and the connector 23 have the same shape, and the connector 22 has, for example, a cream color, while the connector 24 has a red color. As shown in FIG. 5, a lead wire insertion hole 28 is formed in the front plate portion 10b, and lead wires 29 and 30 are led out from the lead wire insertion hole 28.
Non-fixed type connectors 29a and 30a are connected to the lead-out end.

A cover member 31 is attached to the above-mentioned case 10 by an appropriate engaging means. The cover member 31 covers the entire opening of the case 10 and is left from the upper portion of the front plate portion 10b. The cover member 31 and the cover portion 14 surround the plurality of connectors 19 to 25. The plurality of lead wires in each of the connectors 19 to 25 do not include a lead wire that is conductive to one power supply terminal of the AC input power supply and a lead wire that is conductive to the other power supply terminal. . That is, FIG.
As shown in FIG. 2, for example, each of the lead wires 26 in the connector 25 has one power supply terminal 32 of the AC input power supply 32.
That is, the connector 25 has only the lead wire 26 that is electrically connected to one power supply terminal 32a of the input power supply 32 via the triacs 16, 17, and 18, and the connector 25 has The lead wire connected to one power supply terminal 32a of the input power supply 32 and the lead wire connected to the other power supply terminal 32b of the input power supply 32 do not coexist. Further, in FIG. 12, each lead wire 34 of the connector 33 on the load device side is composed of only a lead wire that is electrically connected to the other power supply terminal 32b. In the figure, reference numeral 35 is a drain valve, 36 is a water supply valve, 3
Reference numeral 7 is a water supply valve for supplying the softer.

As shown in FIG. 4, in the control unit 9 having the above-described structure, the mounting plate portion 15 is screwed to the rear surface side of the flange 4a on the right side of the inspection port 4 of the outer box 1 and the leg portion 1 is provided.
By fixing 2 to the bottom plate of the outer box 1, the connector 1
9 to 25 are arranged so as to face the inspection port 4 of the outer box 1 and to be located on the right side of the inspection port 4. The connectors 19 to 25 and 29a, 30a are connected to the device side connectors outside the control unit 9.

According to the present embodiment as described above, in the case 10 of the control unit 9, a plurality of connectors 19 for connecting the printed wiring board 11 and other devices to the front plate portion 10b facing the inspection port 4 are provided. Since I placed ~ 25,
The number of connectors on the printed wiring board 11 can be reduced, and the inspection of the printed wiring board 11 is simplified because the connectors 19 to 25 face the inspection port 4. Further, the printed wiring board 11 and thus the control unit 9 can be downsized, the space occupied in the outer box 1 can be reduced, and the electronic parts of the printed wiring board 11 can be connected to other devices. It is also possible to facilitate the inspection work.

In particular, the control unit 9 is connected to its connector 19
Since ~ 25 is configured to face the inspection port 4 of the outer box 1,
Not only will the connection work be easier, but you can also check the connection status and prevent forgetting to connect. Further, since the control unit 9 can be downsized, the control unit 9 can be arranged on the right side of the inspection port 4 and the inspection of other devices in the outer box 1 becomes easier.

Further, according to this embodiment, the connectors 19 to 2 are
Since the plurality of lead wires 26 in No. 5 do not include both a lead wire that is conductive to one power supply terminal 32a of the input power supply 32 and a lead wire that is conductive to the other power supply terminal 32b, For example, even when the connectors 19 to 25 are in a poorly insulated state due to water getting wet, the input power source does not short-circuit. Furthermore, according to the present embodiment, the connectors 22 and 24 having the same shape are made to have different colors, so that the connectors having the same shape can be distinguished by the difference in color.

Further, according to the present embodiment, the cover portion 14 is formed from the upper part of the front plate portion 10b where the connectors 19 to 25 are present in the case 10 to one side portion, and further, the front plate portion is formed in the case 10. Since the cover member 31 mounted from the upper portion of 10b to the other side portion is provided and the connectors 19 to 25 are surrounded by the cover member 31 and the cover portion 14, the plurality of connectors 19 to 25 are covered by these cover members 31 to 25. The portion 14 and the cover member 31 can be surrounded so as to be wrapped from the upper portion to both side portions, and the connectors 19 to 25 can be prevented from getting wet with water.

The drum type washing machine may have a drying function. Further, in the case where the inspection port is formed on the outer case back plate, the control unit may be provided so as to face the inspection port.

[0023]

As is apparent from the above description, the present invention can reduce the number of connectors on the circuit board, simplify the inspection of the circuit board, and reduce the size of the circuit board and thus the control unit. The occupying space in the outer box can be reduced, and it is possible to connect with other devices without being disturbed by the electronic parts of the circuit board, and the inspection work can be facilitated.

[Brief description of drawings]

FIG. 1 is a perspective view of a control unit showing an embodiment of the present invention.

FIG. 2 is an external perspective view of a drum type washing machine.

FIG. 3 is a side view of the drum type washing machine.

FIG. 4 is a front view showing the inspection port portion.

FIG. 5 is a front view of a control unit.

FIG. 6 is a side view of the control unit.

FIG. 7 is a perspective view showing a connection configuration between a lead wire and a printed wiring board.

FIG. 8 is a perspective view showing another connection configuration of the lead wire and the printed wiring board.

FIG. 9 is a perspective view of a connector.

FIG. 10 is a perspective view of another connector.

FIG. 11 is a vertical sectional side view of a connector portion.

FIG. 12 is a diagram showing a circuit configuration relating to one connector.

[Explanation of symbols]

1 is an outer box, 4 is an inspection port, 7 is a drum, 9 is a control unit, 10 is a case, 11 is a printed wiring board (circuit board), 10b is a front plate part (a surface facing the inspection port), and 14 is a cover part. , 19 to 25 are connectors, 26 is a lead wire, 31 is a cover member, 32 is an input power source, 32a is one power source terminal, and 32b is the other power source terminal.

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 3B155 AA10 BB05 BB18 CA02 CB32                       DA04 JA01 JA03 MA01 MA02                       MA09                 5E021 FA05 FB07 FB13 FB21 FC38                       JA05 KA02                 5E087 EE10 EE11 FF06 JJ09 LL04                       LL17 MM08 QQ06 RR04 RR12                       RR25 RR26 RR42

Claims (4)

[Claims] 1. An outer box having a drum inside and an inspection opening at a predetermined portion, and a circuit board arranged inside the case, the inside of the outer box facing the inspection opening. And a control unit provided, wherein the control unit is provided with a plurality of connectors for connecting the circuit board and other devices on a surface of the case facing the inspection port. Washing machine. 2. A plurality of lead wires are connected from a circuit board to a connector, and the plurality of lead wires in the connector are connected to one power supply terminal of an input power supply and the other power supply terminal. The drum type washing machine according to claim 1, wherein both of the lead wires that are electrically connected to the drum type washing machine are not included. 3. The drum type washing machine according to claim 1, wherein the plurality of connectors have the same shape, and the connectors of the same shape have different colors. 4. The case has a cover formed by hanging from one side to an upper side of a surface on which a plurality of connectors are present, and further mounted to this case by hanging from the upper side of the surface to the other side. The drum type washing machine according to claim 1, further comprising a cover member, wherein the cover member and the cover portion surround the plurality of connectors.