JP2011041739A - Drum-type washing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate the removal of a control unit without drawing a lead wire while not requiring troublesome work. <P>SOLUTION: The control unit 21 is drawably installed in a base 1a of an exterior box by being backward slid from the front and includes a lead wire exit 29 provided on a position of a side which becomes the center of the rotation when the unit 21 is drawn to be rotated widthways (an arrow B). Thereby, drawing the unit 21 installed in the base 1a and rotating it widthways with the side of the lead wire exit 29 as the center rotate the unit 21 with a part through the lead wire exit 29 of the lead wire 30 as the approximate center. Under being rotated, the unit 21 is opened to easily have a required service, thus facilitating execution of the service such as the removal of the unit 21 without further drawing the lead wire 30. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a drum type washing machine having an improved control unit mounting structure.

  Conventionally, in a drum-type washing machine, a water tank is elastically supported inside an outer box having a base plate at the bottom, and a drum for storing laundry is provided inside the water tank, and this drum is driven by a motor or the like. Washing is performed by rotationally driving from the apparatus.

  The operation including the operation of the drive device is controlled by a control unit, and the control unit is housed in the lower part of one side (for example, the right side) of the outer box from the front. It is attached to the outer box with multiple screws. Along with that, between the control unit and the power supply unit, between the control unit and the display unit, between the control unit and various sensors including the water level sensor, and between the control unit and the motor, water supply valve and drain valve. Lead wires for connecting between the load and the like are bundled with an insulating tape and fixed to the outer box with a band-like fastener.

With this configuration, when detaching the control unit at the time of service, first, the fastener that fixes the lead wire to the outer box is removed from the outer case, then the fastener is removed from the lead wire, and further from the lead wire. After removing the insulating tape, it was necessary to go through a procedure of removing the screw that attached the control unit to the outer box and pulling the control unit forward from the outer box.
Although the control unit mounting structure is not shown, general control unit mounting structures include those shown in Patent Document 1 and Patent Document 2 below.

JP 2007-175169 A JP 2008-272196 A

  In removing the control unit from the above-mentioned conventional device, first, the fastener that fixes the lead wire to the outer box is removed from the outer case, then the fastener is removed from the lead wire, and then the insulation tape is removed from the lead wire. The work to remove is necessary because the lead wire is pulled by pulling out the control unit from the outer box after that, and in other words, the control unit is pulled out as the lead wire is pulled and service work is performed. Because.

  As described above, the lead wire is provided between the control unit and the power supply unit, between the control unit and the display unit, between the control unit and various sensors including the water level sensor, and between the control unit and the motor or water supply. These are connected to loads such as a valve and a drain valve, and extend from various positions in the outer box toward the control unit. For this reason, if the control unit is simply pulled out of the outer box, there is a risk of disconnection of the connecting portion at the control unit side end or the counter-control unit side end of any (particularly large pulling degree) lead wire. When servicing with the control unit removed, as described above, first, the fastener with the lead wire fixed to the outer box is removed from the outer case, then the fastener is removed from the lead wire, and It is necessary to remove the insulating tape from the lead wires.

  However, in the case of the conventional one that requires such work, there has been a problem that the control unit cannot be easily removed.

  SUMMARY OF THE INVENTION The present invention has been made in view of the above-described circumstances. Therefore, the object of the present invention is to provide a drum-type washing machine that can easily remove a control unit and avoid pulling a lead wire without requiring troublesome work. There is.

  In order to achieve the above object, in the drum type washing machine of the present invention, an outer box having a base plate at the bottom, a water tank elastically supported inside the outer box, and a water tank provided inside the water tank A drum for storing laundry, a drive device for rotating the drum, and a control unit for controlling operation including the operation of the drive device. The lead wire outlet is provided at a position on the side that becomes a center of rotation when the control unit is rotated in the horizontal direction when the control unit is pulled out. Invention).

  According to the above means, when the control unit is pulled forward from the state where it is mounted on the base plate and rotated in the lateral direction around the lead wire outlet side, the control unit will generally remove the portion of the lead wire that has passed the lead wire outlet. Since it can be rotated to the center of the heel and the control unit can be opened in the rotated state to perform necessary services without difficulty, the control unit can be removed and serviced without further pulling the lead wires. Therefore, when the detachment is performed, the fastener that fixes the lead wire to the outer box is first removed from the outer case, and then the fastener is removed from the lead wire, and then the insulating tape is further removed from the lead wire. There is no need for troublesome work of removing the control unit, and thus the control unit can be easily removed.

The removal explanatory drawing of the principal part which shows one Example of this invention Longitudinal side view of the entire drum-type washing machine with a part broken away Perspective view of drum-type washing machine structure Perspective view from the upper rear of the control unit alone Perspective view of the control unit alone from diagonally forward and downward Perspective view from the upper front of the outer box base plate

Hereinafter, an example (one embodiment) of the present invention will be described with reference to the drawings.
First, FIG. 2 shows the entire structure of the drum type washing machine, and the outer box 1 is an outer shell. The outer box 1 has a base plate 1a at the bottom, and is configured by connecting a box body 1b on the base plate 1a. A laundry entrance / exit 2 is formed at the center of the front surface (right side in FIG. 2) of the box body 1b, and a door 3 for opening and closing the entrance / exit 2 is provided. Further, an operation panel 4 is provided at the upper part of the front surface of the box body 1b, and a display unit for causing various display sections (not shown) of the operation panel 4 to perform display operation on the back side (inside the outer box 1). 5 is provided.

A water tank 6 is disposed inside the box body 1b (outer box 1). The aquarium 6 has a horizontal cylindrical shape whose axial direction is front and rear (left and right in FIG. 2), which is lifted forward by a pair of left and right (only one shown) suspensions 7 on the base plate 1a. It is elastically supported in an inclined shape.
A motor 8 is attached to the back of the water tank 6. In this case, the motor 8 is composed of, for example, a direct current brushless motor, and is an outer rotor type. A rotating shaft (not shown) attached to the center of the rotor 8 a is connected to the inside of the water tank 6 via the bearing housing 9. Is inserted.

  A drum 10 is disposed inside the water tank 6. This drum 10 also has a horizontal cylindrical shape with the front and rear being axially attached. By attaching it to the tip of the rotating shaft of the motor 8 at the center of the rear part, the drum 10 has a forwardly inclined shape coaxial with the water tank 6. I support it. As a result, the drum 10 is rotated by the motor 8, so that the drum 10 is a rotating tank, and the motor 8 functions as a driving device that rotates the drum 10.

  A large number of small holes 11 (only a part is shown) are formed in the peripheral side portion (body portion) of the drum 10 over the entire area. Each of the drum 10 and the water tub 6 has openings 12 and 13 on the front surface thereof, and the laundry entrance 2 is connected to the opening 13 of the water tub 6 through an annular bellows 14. . As a result, the laundry entrance / exit 2 is connected to the inside of the drum 10 via the bellows 14, the opening 13 of the water tub 6, and the opening 12 of the drum 10.

  A drain pipe 16 is connected to the rear part of the bottom, which is the lowest part of the water tank 6, via a drain valve 15. A drying unit 17 is disposed above and in front of the back of the water tank 6. The drying unit 17 includes a dehumidifier 18, a blower 19, and a heating device 20, dehumidifies the air in the water tank 6 (drum 10), and then heats the air in the water tank 6 (drum 10). The laundry is dried by carrying out the circulation to return to.

  Next, FIG. 3 shows the control unit 21 attached to the base plate 1 a of the outer box 1. The control unit 21 starts the operation of the motor 8 (drive device), the operation of the drain valve 15, the operation of a water supply valve (not shown) provided to supply water into the water tank 6, the operation of the blower device 19, and The operation of the drum type washing machine, such as the operation of the heating device 20, is controlled. As shown in FIGS. 4 and 5, the unit box 22 is an outer shell.

  The unit box 22 is composed of an upper box body 22a whose lower surface is open and a bottom lid 22b which closes an open portion of its lower surface, and a control board (not shown) is accommodated in the box body 22a. It is fixed. Therefore, the control unit 21 has a control board on the upper side and a bottom lid 22b on the lower side.

  A leg portion 23 is formed at the rear portion of the left side portion of the box body 22a, and a leg portion 24 is formed at the rear portion of the right side portion so as to protrude downward from the bottom lid 22b. Further, the fixing portion 25 protrudes downward from the bottom lid 22b at the front portion of the left side portion of the box body 22a, and the fixing portion 26 protrudes further to the right side of the box body 22a at the front portion of the right side portion. Both are formed in a flat plate shape facing forward. The fixing portions 25 and 26 also have mounting holes 27 and 28 that penetrate both front and rear.

  A lead wire outlet 29 is formed at the corner on the left side (fixed portion 25 side) of the front portion of the bottom cover 22b, and the lead wire 30 is led out from the lead wire outlet 29. The lead wire 30 is provided between the control unit 21 (control board) and a power supply unit (not shown), between the control unit 21 and the display unit 5, and between the control unit 21, a water level sensor, a vibration sensor, a temperature sensor, and a door sensor. , And various sensors (not shown) such as filter sensors, and between the control unit 21 and loads such as the motor 8, the water supply valve, the drain valve 15 and the like. In the figure, it is expressed as a single piece, and the summary may be performed with a single outer tube.

  A lead wire receiving portion 31 for receiving the lead wire 30 is formed in the fixing portion 25 in the vicinity of the lead wire outlet 29. The lead wire receiving portion 31 has a tongue-like shape that is substantially orthogonal to the extending direction of the lead wire 30 and protrudes forward from the back side of the box body 22a, and raises the forefront portion 31a upward. Yes.

  A pair of left and right guided portions 32 are formed to project downward at the center of the bottom cover 22b, and both of the guided portions 32 have a ridge shape extending in the front-rear direction. Furthermore, a fan guard portion 33 is formed at the center portion of the bottom cover 22b so as to be positioned between the pair of guided portions 32 so as to protrude downward. It forms an enclosure that covers the direction. A fan 34 is attached to the center portion of the bottom cover 22b so as to be located inside the fan guard portion 33. The fan 34 cools a portion to be cooled (not shown) such as an IGBT included in the control board. The fan 34 corresponds to the portion to be cooled, and the lower surface of the bottom cover 22b within the range of the protruding length of the fan guard portion 33. It protrudes further downward.

  In contrast, as shown in FIG. 6, the base plate 1a of the outer box 1 is provided with a control unit mounting portion 35 on the right side of the front portion. The control unit mounting portion 35 includes leg receiving portions 36 and 37 on which the leg portions 23 and 24 of the control unit 21 are slid from the front and a screw hole 38 corresponding to the mounting hole 27 at a portion where the fixing portion 25 abuts. The guide portion 32 is configured to have a pair of left and right rail portions 39 each including two protrusions 39a and 39b extending in the front-rear direction so as to be received and slid back and forth.

  Further, the portion between the pair of rail portions 39 in the control unit mounting portion 35 can accommodate a downward projecting portion (fan guard portion 33) of the fan 34, and a number of slits are formed at the bottom thereof. A ventilation port 40 made of a hole is formed.

In addition, the right flange portion 1b ₁ (see FIG. 3) at the front edge of the box body 1b has a mounting hole 28 (a screw 44 screwed in as described later) at a portion where the fixing portion 26 of the control unit 21 abuts. Screw holes (not shown) corresponding to the reference).
FIG. 3 also shows the lead wire 30 and a band-like fastener 42 in which a middle portion thereof is tightly fixed on a cover 41 made of a flame retardant material.

Next, the procedure for mounting and removing the control unit 21 in the above configuration will be described.
To attach the control unit 21, first, as shown in FIG. 1 (b), the control unit 21 is positioned in front of the control unit mounting portion 35 in the base plate 1 a of the outer box 1, and the arrow A and On the other hand, it advances toward the back, and the guided portion 32 is fitted to the rail portion 39 while the downward projecting portion of the fan 34 is aligned with the portion between the pair of rail portions 39.

Then, when the control unit 21 is advanced further toward the back of the base plate 1a, the guided portion 32 is guided by the rail portion 39, and the control unit 21 advances toward the leg receiving portions 36 and 37, and the leg rests thereof. The leg portions 23 and 24 are placed on the portions 36 and 37. Also, at that time, the mounting hole 27 of the fixing portion 25 of the control unit 21 to the screw hole 38 matches the base plate 1a, the fixed portion of the control unit 21 to the flange portion 1b ₁ of the screw holes of the box body 1b (not shown) 26 mounting holes 28 are matched.

  Then, next, the screw 43 shown in FIGS. 3 and 5 is screwed into the screw hole 38 of the base plate 1a from the mounting hole 27 of the control unit 21, and the screw hole of the box body 1b is inserted from the mounting hole 28 of the control unit 21. A screw 44 is screwed in (not shown) and tightened together. Thus, the control unit 21 can be mounted from the control unit mounting portion 35 on the base plate 1a of the outer box 1 to the box body 1b. After that, the lead wire 30 coming out from the lead wire outlet 29 of the control unit 21 is fastened and fixed on the cover 41 with a fastener 42. FIG. 1A shows a state in which the control unit 21 is attached to the base plate 1a of the outer box 1 in this way (the fastener 42 is omitted).

  In order to remove the attached control unit 21, first, the fastener 42 and the screws 43 and 44 are removed. Next, as indicated by an arrow A in FIG. 1B, the control unit 21 is pulled forward, the leg portions 23 and 24 are detached from the leg receiving portions 36 and 37, and the guided portion 32 is separated from the rail portion 39. Let go.

Then, at a position immediately after the guided portion 32 is detached from the rail portion 39, the control unit 21 is rotated in the lateral direction around the lead wire outlet 29 side as indicated by an arrow B in FIG. Let Therefore, the lead wire outlet 29 exists at a position on the side serving as the rotation center when the control unit 21 is pulled out and rotated in the lateral direction as described above.
Thereafter, as shown in FIG. 1 (d), the box body 22a of the unit box 22 can be opened from the rear side from the bottom lid 22b to perform necessary services such as inspection and replacement of the control board.

  Thus, in the thing of the said structure, the control unit 21 is attached to the base plate 1a of the outer case 1 so that it can slide out from the front and it can be pulled out. A lead wire outlet 29 is provided at a position that becomes a center of rotation when rotating. Accordingly, if the control unit 21 is pulled forward from the state where it is mounted on the base plate 1a and rotated laterally around the lead wire outlet 29 side, the control unit 21 passes through the lead wire outlet 29 of the lead wire 30. Since the portion is rotated about the center, and the unit box 22 can be opened in the rotated state to perform necessary services without difficulty, the control unit 21 can be removed and serviced without further pulling the lead wires 30. Can do.

  Therefore, when the detachment is performed, the fastener that fixes the lead wire to the outer box is first removed from the outer case, and then the fastener is removed from the lead wire, and then the insulating tape is further removed from the lead wire. Therefore, the troublesome work of removing the control unit 21 is not required, and thus the control unit 21 can be easily removed.

In addition, in the above configuration, the base plate 1a of the outer box 1 has the rail portion 39 extending in the sliding direction of the control unit 21, and the control unit 21 has the guided portion 32 guided by the rail portion 39. is doing. Thereby, the attachment of the control unit 21 to the base plate 1a of the outer box 1 can be smoothly performed by sliding them together, the workability can be improved, and the screw hole 38 of the base plate 1a can be controlled. combined mounting holes 27 of the unit 21, as well as alignment of the box body 1b of the flange portion 1b ₁ of the mounting hole 28 of the control unit 21 for the screw holes, and can be carried out without difficulty, it is possible to further improve the workability.

  In this case, contrary to the above, the rail part 39 may be provided in the control unit 21 and the guided part 32 may be provided in the base plate 1a. Further, the guided portion 32 may have a dotted projection shape instead of a protruding strip shape extending in the front-rear direction.

  Further, the control unit 21 has a control board on the upper side and a bottom cover 22b on the lower side, and a fan for cooling the cooled portion of the control board on the bottom cover 22b. 34. As a result, even if water dripping due to condensation in the outer box 1 is applied to the control unit 21 from above, it can be prevented from being applied to the fan 34 on the upper side of the control unit 21 (box body 22a). Good safety can be ensured.

In addition, in this case, there is a pair of rail portions 39, and a fan 34 is protruded downward at a portion between the pair of rail portions 39. As a result, when the control unit 21 is mounted, a downward projecting portion of the fan 34 is put in a portion between the pair of rail portions 39 so that it becomes a guide for fitting the guided portion 32 to the rail portion 39. Since the guided portion 32 can be easily fitted to 39, workability can be further improved.
Also in this case, the bottom cover 22b may be provided with the guided portion 32 instead of the rail portion 39, and the fan 34 may be provided protruding downward in a portion between the pair of guided portions 32. .

  Further, the control unit 21 has a lead wire receiving portion 31 for receiving the lead wire 30 outside the vicinity of the lead wire outlet 29 in a form substantially orthogonal to the extending direction of the lead wire 30. Thereby, since the lead wire 30 is not received and dropped, the stress applied to the connecting portion of the lead wire 30 and its control unit 21 to the control board can be reduced, and the control unit 21 can be attached to the base plate 1a with the screws 43 and 44. It is possible to prevent the lead wire 30 from interfering with the work when it is fixed, and to prevent the lead wire 30 from being damaged by the screws 43 and 44.

  In addition, in this case, the lead wire receiving portion 31 has a form protruding forward from the back side, so that the lead wire 30 does not fall from the lead wire receiving portion 31 when the control unit 21 is pulled out. (If the lead wire receiving portion 31 has the opposite protruding shape, the lead wire 30 is likely to fall from the lead wire receiving portion 31 when the control unit 21 is pulled out).

  The present invention is not limited only to the embodiment described above and shown in the drawings. In particular, the presence or absence of a drying function and the like can be appropriately changed and implemented without departing from the scope of the invention.

  In the drawings, 1 is an outer box, 1a is a base plate, 6 is a water tank, 8 is a motor (drive device), 10 is a drum, 21 is a control unit, 22b is a bottom cover, 29 is a lead wire outlet, 30 is a lead wire, Reference numeral 31 denotes a lead wire receiving portion, 32 denotes a guided portion, 34 denotes a fan, and 39 denotes a rail portion.

Claims (4)

An outer box having a base plate at the bottom;
A water tank elastically supported inside the outer box;
A drum provided inside the aquarium for storing laundry;
A driving device for rotationally driving the drum;
A control unit for controlling operation including the operation of the drive device,
The control unit is slidably attached to the base plate from the front to the back so that it can be pulled out. When the control unit is pulled out, the lead wire outlet is located at the position that becomes the center of rotation when the control unit is rotated in the lateral direction. A drum type washing machine comprising:   One of the base plate and the control unit has a rail portion extending in a sliding direction of the control unit with respect to the base plate, and the other has a guided portion guided by the rail portion. The drum-type washing machine according to 1.   The control unit has a control board on the upper side and a bottom lid on the lower side, and the bottom lid has a pair of rail portions or guided portions, and the rail portions or guided portions. 3. A drum type washing machine according to claim 2, wherein a fan for cooling the portion to be cooled of said control board is projected downward in a portion between said pair of portions.   4. The control unit according to claim 1, wherein the control unit has a lead wire receiving portion outside the vicinity of the lead wire outlet in a form that is substantially orthogonal to the extending direction of the lead wire and projects forward from the back side. The drum type washing machine according to crab.

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