JPH11342295A - Washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve waster-resisting property and simplify the constitution of a washing machine by providing the machine with an electric components housing part on side part of a top cover and covering its bottom face with a waterproof cover. SOLUTION: In the washing machine, an electric components housing part 34, which is free of its bottom face, is set on the side part 21b of a top cover 21 and a reactor 35 is placed. The lead wire 32 which sits on the side part of the reactor 35 and extends fore-and-aft direction is drawn in the electric component storage part 34. The waterproof cover 37 is set covering the bottom face of the reactor 35. The riser wall part 39, which keeps the part of the lead wire 32 lifting, is set. It is splashed water on the exposed part of the lead wire 32 and the water W falls along the lead wire 32 and drops below to prevent from overcoming the riser wall part 39 and entering the waterproof cover 37. And a reinforcing rib 40 which extends from a screw part 37b to the riser wall part 39 is set on the waterproof cover 37.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing machine in which an electrical component housing is provided at a side portion of a top cover.

[0002]

For example, a top cover of a fully automatic washing machine, for example, is generally formed in a rectangular frame shape having a circular opening at a central portion serving as a laundry entrance / exit and an open lower surface. On the front side of the top cover, an operation panel is provided on the upper surface, and an electronic unit having a control circuit and a drive circuit for driving each load is provided below the operation panel. On the rear side, loads such as a water supply valve and a bath water supply pump are arranged. At this time, the lead wire led out from the electronic unit is connected to each component on the rear side or the washing machine motor through the side of the top cover.

In recent years, a washing machine motor of an inverter drive system has been provided. In this machine, electrical components such as a reactor for blocking harmonics are accommodated in a side portion of the top cover. It has been practiced to provide a housing portion, arrange electrical components in the housing portion, and cover the lower surface thereof with a waterproof cover. In this case, the lead wire passes through the side of the electrical component on the upper surface of the waterproof cover.

[0004] In the above configuration, the water or the like splashed from the washing tub may splash on a portion of the lead wire passing through the side portion of the top cover and not exposed by the waterproof cover but exposed on the lower surface side. is there. At this time, although the lead wire itself is covered so that there is no problem even if a little water is applied,
Depending on the arrangement of the lead wires, it is conceivable that water droplets applied to the lead wire may travel along the lead wire and enter the housing portion, thereby adversely affecting electrical components.

[0005] In order to solve such a drawback, a configuration in which the entire side opening is covered with a waterproof cover is also conceivable. However, with this configuration, it is possible to prevent water from splashing on the lead wires, but the waterproof cover itself becomes large, and new problems such as an increase in the number of screwing points on the top cover and complicating the configuration are caused. become. It is also conceivable to provide a sealing material or the like to waterproof the electrical components, but this also complicates the structure.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide an electric component housing on the side of a top cover and to cover the lower surface with a waterproof cover. An object of the present invention is to provide a washing machine that is excellent in waterproofness and can be completed with a simple configuration.

[0007]

According to the present invention, there is provided a washing machine having a top cover provided on an upper portion of a main body of the washing machine, and an electrical component provided on a side of the top cover with a lower surface open. An electrical component accommodating portion, a lead wire provided to connect the front and rear portions of the top cover through the electrical component accommodating portion, and a lower surface side of the electrical component attached to a lower surface portion of the electrical component accommodating portion. And a rising cover for holding a middle part of the lead wire in an upwardly raised form on the upper surface of the waterproof cover.
Invention).

[0008] According to this configuration, since the lower surface side of the electric component disposed in the electric component accommodating portion on the side of the top cover is covered with the waterproof cover, water splashed from below is splashed on the electric component. There is no. However, there is a possibility that water or the like may be sprayed on a part of the lead wire passing through the side part of the top cover, which is not covered with the waterproof cover and is exposed on the lower surface side.

[0009] At this time, the rising portion provided on the upper surface of the waterproof cover holds the lead wire in a state in which a middle portion of the lead wire is lifted upward. The portion held by the wall portion is arranged at the highest position and is inclined downward from the highest position. As a result, the water droplets attached to the lead wire do not travel along the rising wall portion along the lead wire, and it is possible to prevent water from entering the inside of the waterproof cover, that is, the electrical component housing portion. In addition, the waterproof cover can be unnecessarily increased in size and a separate sealing material or the like need not be provided.

In this case, a concave portion through which a middle portion of the lead wire passes is provided at the upper end portion of the rising wall portion (invention of claim 2).
A hook portion in which a middle portion of the lead wire is fitted and held may be provided (the invention of claim 3). According to these,
Stable holding can be performed without the middle part of the lead wire being shifted or detached from the rising wall part.

Further, the waterproof cover may be provided with a reinforcing rib extending from a mounting portion of the waterproof cover to the electrical component accommodating portion toward the rising wall portion (the invention of claim 4). The rising wall can be reinforced. Further, the waterproof cover may be provided with an edge guard for covering the edge of the electrical component (the invention of claim 5), which prevents the lead wire from touching and rubbing the edge of the electrical component. can do.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention (corresponding to claims 1, 2, 4, and 5) will be described below with reference to FIGS. First, FIG. 7 shows a schematic configuration of a main body 1 of a washing machine (fully automatic washing machine) according to the present embodiment. Here, an outer tub 3 is provided in an outer box 2 having a substantially rectangular box shape.
Is provided via an elastic suspension mechanism 4. Outer box 2
Are connected on a plastic base plate 5.

In the outer tub 3, an inner tub 6 as a washing tub and a dewatering tub is rotatably provided.
An agitator (pulsator) 7 for generating a water flow is provided at the inner bottom of the. A drive mechanism 8 is provided on the outer bottom of the outer tub 3. In this case, the drive mechanism 8 includes a washing machine motor 9 composed of, for example, an inverter-driven outer rotor type three-phase brushless motor, and directly connects a rotor shaft 10 of the washing machine motor 9 to the agitator 7. A hollow shaft 11 inserted through the shaft 10 via a clutch is directly connected to the inner tank 6. Thus, the stirring mechanism 7 is rotated forward and reverse by the driving mechanism 8 in the washing and rinsing steps. In the dehydrating and dehydrating rinsing steps, the inner tank 6 is rotated by the stirring mechanism. 7 is rotated at high speed.

At the bottom of the outer tub 3, there is provided a drainage channel 12 for draining the water from the inner tub 6, and a drainage hose 14 is connected to the drainage channel 12 via a drainage valve 13. I have. Further, a drain port 15 for draining water from the outer tank 3 is provided at the bottom of the outer tank 3. The drain port 15 is connected to the drain hose 14, though not shown. The drainage channel 12 is provided with an air trap 16, and the pressure in the air trap 16 is guided to a water level sensor (not shown) via an air tube 17. This water level sensor is arranged on the rear side of the top cover described later.

On the other hand, a balance ring 18 is mounted on the upper end of the inner tub 6 and a dewatering hole for discharging water from the inner tub 6 during dehydration through the balance ring 18. 19 are provided. A substantially ring-shaped trough cover 20 is provided at the upper end of the outer trough 2 as shown only partially. Although not shown, the tub cover 20 is provided with an inner lid that opens and closes an opening thereof, and a water passage section for supplying water to the inner layer 6 in a shower is formed on the inner lid. ing.

A top cover 21 made of plastic is provided at the upper end of the outer box 2. As shown in FIG. 1, the top cover 21 has a laundry entrance / exit 22 which is opened in a substantially circular shape at the center, and has a substantially rectangular frame-like hollow box shape with rounded corners. In addition, a two-fold lid 23 (see FIG. 7) for opening and closing the entrance 22 is provided on the upper surface of the top cover 21. Hereinafter, the top cover 21 will be described in detail with reference to FIGS.

As shown in FIG. 1, the top cover 21 integrally has a front side 21a, left and right side parts 21b and 21c, and a rear side 21d. , Front cover 25, back cover (not shown)
And so on. The cover main portion 24 has an upper surface opened in the front half (the front side 21a and the front side of the left and right side portions 21b and 21c), and the rear half (the rear side 21d and the left and right side portion). The rear portions 21b and 21c) have a substantially rectangular frame shape with an open lower surface.

At this time, partition walls 26 and 27 extending in the vertical direction and partitioning the interior are integrally formed at the boundary between the front half and the rear half of the cover main part 24 (the middle part of the side parts 21b and 21c). It is provided in. Further, as shown in FIGS. 2 and 3, a part assembling part 28 is provided integrally with a part of the cover main part 24 that forms the rear side part 21 d. Further, as shown only in the left side in FIGS. 2 and 3, a partition wall 29 extending so as to partition the component assembling portion 28 is provided integrally between the side portion 21b and the rear side portion 21d. ing.

As shown in FIG. 1, the front cover 25 is provided so as to close the upper opening of the front half of the cover main part 24.
On its upper surface, a control panel having various operation keys and a display unit is provided. Also, front cover 2
An electronic unit 30 including a drive circuit for driving each load, a control circuit for controlling the whole, and the like is provided on the lower surface side (within the front side portion 21a) of 5. At this time, the electronic unit side lead wire 31 is led out from the electronic unit 30.

On the other hand, although not shown, the component assembling portion 28 (rear side portion 21d) pumps bath water through a water supply valve for supplying water into the inner tank 6 and a bath water hose. Water pump, a lid switch for detecting the opening and closing of the lid 23, an unbalanced rotation detection switch for detecting the unbalanced rotation of the inner tub 6, the water level sensor, and the like. The component assembling part 28 is integrally provided with a drain port 28a (see FIGS. 2 and 3) to which a drain hose of a dryer (not shown) can be connected. The back cover is attached to the rear side 21d of the top cover 21 so as to cover the upper surface and the rear surface of the component assembling portion 28.

As shown in FIGS. 1 to 3, the power supply lines of the water supply valve and the bath water pump, the power supply lines of the washing machine motor 9 and the drain valve 13 and the signal lines of the switches and sensors are used. The lead wire 32 is guided forward from the rear side 21d of the top cover 21 through the left side 21b, and is connected to the electronic unit side lead 31 within the front side 21a. To be connected through. At this time, as shown in FIG. 2, the lead wire 32 is connected to the notch 2 formed in the lower portion of the partition wall 29.
9a and an opening 26a formed in the lower inner portion of the partition wall 26.
Needless to say, the lead wire 32 is coated with a high insulating and waterproof property.

In the rear side portion of the left side portion 21b of the top cover 21, that is, the portion between the partition wall 26 and the partition wall 29, the electrical component housing portion 3 having an open lower surface.
4 are formed. In the electrical component housing portion 34, a reactor 35 for blocking harmonics, which is an electrical component constituting a part of a drive circuit of the washing machine motor 9, is provided. This reactor 35 includes a coil 3
5b, and the periphery is covered with a cover 35c.

The reactor 35 is located at a portion near the front side of the electrical component accommodating portion 34 on the outer side, and a pair of front and rear screw boss portions 36, 3 integrally formed on the top cover 21.
6 (see FIG. 2), and these screw bosses 36,
The flange 36d provided on the lower surface of the cover 35c is attached to the cover 36 by screwing it from below. At this time, the lead wire 3
2 will be positioned to extend back and forth on the immediate side (inside) of the reactor 35.

The lower surface of the reactor 35 is covered with a waterproof cover 37 made of plastic. As shown in FIGS. 4 to 6, the waterproof cover 37 has a plate-like shape that closes the lower surface of the side portion 21 b (the electrical component housing portion 34) of the top cover 21 except for the rear portion. None, and integrally has an insertion piece 37a protruding forward from the front end thereof, and the screw boss 3
6 is integrally formed with a screwing portion 37b corresponding to one (rear side). As shown in FIG. 4, the waterproof cover 37 has two drain holes 37c at both front and rear ends.

Thus, the waterproof cover 37 inserts the insertion piece 37a into the insertion hole 26b formed at the lower end of the partition wall 26 so as to be continuous with the opening 26a. By being screwed (so-called joint tightening) to the screw boss portion 36 together with the flange portion 35d at the portion 37b, it is attached so as to cover the opening on the lower surface of the electrical component housing portion 34. In the present embodiment, the flange 35 of the reactor 35 is provided on the upper surface of the waterproof cover 37.
A U-shaped edge guard 38 surrounding the edge portion d is integrally formed. This prevents the lead wire 32 from touching and rubbing the edge of the flange 35d.

At this time, as shown in FIGS. 2 and 3, the lead wire 32 is disposed on the upper surface side of the waterproof cover 37. A rising wall 39 is formed integrally with the line 32 for holding the middle part in a shape lifted upward. As shown in FIG. 6, the rising wall 39 is formed in a rectangular plate shape, and the upper end thereof has a recess 3 through which a middle part of the lead wire 32 passes.
9a are formed. Now, as shown in FIG.
The lead wire 32 is arranged so as to form a chevron shape in which the portion held by the concave portion 39a of the rising wall portion 39 is the highest position and is inclined downward on both sides from the highest position. At this time, since the lead wire 37 is located in the concave portion 39a, the lead wire 37 is stably held without being shifted or detached from the rising wall portion 39.

Further, in this embodiment, as shown in FIGS. 2 and 5, the rear side of the left and right side edges of the waterproof cover 37 extends from the screwed portion 37b toward the rising wall portion 39. The reinforcing rib 40 is provided integrally. The reinforcing rib 40 has an upper edge portion inclined so that the rising wall portion 39 is formed.
Is formed in a triangular shape so as to extend to the upper end.
Thus, the rising wall portion 3 which is a relatively weak portion of the waterproof cover 37 that is not supported by the top cover 21.
9 can be reinforced.

In the above configuration, the reactor 35 disposed in the electrical component accommodating portion 34 of the side portion 21b of the top cover 21 has the lower surface side covered with the waterproof cover 37, and thus has jumped from the inner tank 6. It is possible to prevent water or the like from splashing on the reactor 37. However, there is a possibility that water or the like may be sprayed on a portion of the lead wire 32 extending through the side portion 21b of the top cover 21 back and forth and not exposed by the waterproof cover 37 and exposed on the lower surface side.

At this time, the rising portion 39 provided at the rear end portion of the waterproof cover 37 holds the middle part of the lead wire 32 in a state of being lifted upward. The lead wire 32 is arranged in a state where the portion held by the rising wall portion 39 is the highest position and is inclined downward therefrom. As a result, as shown in FIG.
, And falls downward, so that water can be prevented from entering the inside of the waterproof cover 37, that is, the reactor 35 portion, over the rising wall portion 39.

By the way, considering only the waterproof effect, a configuration in which the entire lower surface of the electrical component housing 34 is covered with a waterproof cover is also conceivable. However, with this configuration, the waterproof cover itself becomes large, and new problems such as an increase in the number of screwing points for the top cover 21 and a complicated configuration are caused. It is also conceivable to provide a sealing material or the like to waterproof the electrical components, but this also complicates the structure. On the other hand, in the present embodiment, the waterproof cover 37 is relatively small enough to cover only necessary parts of the electrical component housing portion 34, and the number of screwed portions can be reduced. A sealing material or the like is not required, so that a simple configuration can be achieved.

As described above, according to the present embodiment, the electrical component accommodating portion 34 in which the reactor 35 is disposed is provided on the side portion 21 b of the top cover 21, and the opening on the lower surface thereof is formed with the waterproof cover 37.
A rising wall 39 is provided at the rear end of the upper surface of the waterproof cover 37 for holding the middle part of the lead wire 32 in an upwardly raised state.
5 is excellent in waterproofness and can be achieved with a simple configuration.

In the present embodiment, especially, the rising wall 3
Since the concave portion 39a is provided at the upper end of 9, the intermediate portion of the lead wire 32 can be stably held without being displaced or detached from the rising wall portion 39 in the lateral direction. Since the reinforcing rib 40 is provided on the waterproof cover 37, the wall portion 3 rising from the screwed portion 37b is formed.
9 and the edge guard 38 is provided on the waterproof cover 37.
The advantage that the lead wire 32 can be prevented from touching and rubbing the edge portion of the reactor 35 can also be obtained.

FIG. 8 shows another embodiment (corresponding to claim 3) of the present invention. In this embodiment, instead of the recess 39a, a hook 41a into which a middle part of the lead wire 32 is fitted and held is provided at the upper end of the rising wall 41 provided integrally with the waterproof cover. Even in such a configuration, as in the above-described embodiment, the intermediate portion of the lead wire 32 can be stably held without being shifted or detached from the rising wall portion 41 in the lateral direction.

In addition, the present invention is not limited to the above-described embodiment. For example, the electrical components housed in the electrical component housing portion 34 are not limited to the reactor 35, but may be other components such as a noise filter and a leak sensor. It may be a part,
Further, a similar configuration may be provided on the right side portion 21c of the top cover 21, and various modifications can be made to the shape and mounting structure of the waterproof cover 37.
The present invention can be appropriately changed and implemented without departing from the gist.

[0035]

As is apparent from the above description, according to the washing machine of the present invention, there is provided a washing machine according to the present invention in which the electrical component housing is provided on the side of the top cover and the lower surface thereof is covered with the waterproof cover. Since the rising wall portion is provided on the upper surface of the waterproof cover so as to hold a middle portion of a lead wire provided so as to connect the front and rear sides of the top cover in a state of being lifted upward, it is excellent in waterproofness to electrical components, and This has a practical effect that a simple configuration can be used.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention, and is an exploded perspective view of a top cover.

FIG. 2 is a longitudinal side view of the rear side of the top cover.

FIG. 3 is a cross-sectional plan view of the rear side of the top cover.

FIG. 4 is a plan view of a waterproof cover.

FIG. 5 is a side view of the waterproof cover.

FIG. 6 is a rear view of the waterproof cover.

FIG. 7 is a longitudinal sectional side view schematically showing a configuration of a washing machine main body.

FIG. 8 is a view corresponding to FIG. 6, showing another embodiment of the present invention.

[Explanation of symbols]

In the drawing, 1 is a washing machine body, 21 is a top cover, 21b
Is a side portion, 32 is a lead wire, 34 is an electrical component housing portion, 3
5 is a reactor (electrical component), 37 is a waterproof cover, 38 is an edge guard, 39 and 41 are rising wall portions, 39a is a concave portion, 40 is a reinforcing rib, and 41a is a hook portion.

Claims (5)

[Claims] 1. A top cover provided on an upper portion of a main body of a washing machine, an electrical component housing portion provided with an electrical component disposed on a side of the top cover with a lower surface side open, and an electrical component. A lead wire provided so as to connect between the front and rear portions of the top cover through a housing portion, and a waterproof cover attached to a lower surface portion of the electrical component housing portion and covering a lower surface side of the electrical component, and A washing machine characterized in that a rising wall portion is provided on an upper surface of the waterproof cover to hold a middle part of the lead wire in an upwardly lifted form. 2. The washing machine according to claim 1, wherein a concave portion is provided at an upper end portion of the rising wall portion, through which a middle portion of the lead wire passes. 3. The washing machine according to claim 1, wherein the rising wall portion is provided with a hook portion into which a middle portion of the lead wire is fitted and held. 4. The waterproof cover is provided with reinforcing ribs extending from a mounting portion of the waterproof cover to the electrical component housing toward the rising wall.
4. The washing machine according to any one of items 3 to 3. 5. The washing machine according to claim 1, wherein the waterproof cover is provided with an edge guard for covering an edge portion of the electrical component.