JP2962205B2 - Fully automatic washing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fully automatic washing machine used in ordinary households.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 1 and 2, in a fully-automatic washing machine having a hanging and vibration-proof support, a base 4 for mounting a driving device at the bottom of an outer tub is a polypropylene containing a washing and dewatering tub 5. The outer tank 14 is formed at the bottom of the outer tank 14 and is fastened to a rib or a boss at the bottom of the outer tank by screws or the like.

The base 4 is provided with a driving device 13 for driving the washing and dewatering tub 5. The base has a driving motor 15 and a clutch mechanism 1.
6 is fixed.

A drive pulley 17 is fixed to an output shaft 15a of the drive motor 15, and a driven pulley 18 is fixed to an input shaft 16a of the clutch mechanism 16, and both pulleys 1 are fixed.
7 and 18 are connected by a transmission belt 19.

The clutch mechanism 16 includes a clutch and a speed reduction mechanism for switching between a washing drive and a dehydration drive. A double output shaft 16b penetrates through the base 4 and the outer tub 14 and projects into the outer tub 14. A washing and dewatering tub 5 is connected to the shaft, and a rotating blade 7 is connected to the inner shaft.

As shown in FIG. 2, the base 4 has a substantially rectangular shape so as to cross the center of the outer tub 14 in the lateral direction, and the outer peripheral portion of the base 4 is fastened to the outer tub 14 with screws. Vibration generated when the dewatering tub 5 is driven by the driving device 13 is transmitted from the base 4 to the bottom of the outer tub 14 via the clutch mechanism 16 and the suspension rod 2 from the base 4. And transmitted to the outer frame 1.

[0007]

However, in the conventional configuration, when a steel plate base having a substantially rectangular shape and covering only a part of the outer tank bottom is used, the steel plate base and the polypropylene Since the rigidity of the material is different in the resin outer tub, the shape of the portion of the bottom of the outer tub not covered by the base, the ribs and the like are provided to reduce the rigidity in different directions.

In addition, a base made of a substantially square steel plate has a simple surface configuration with few irregularities due to problems such as formability by pressing, and high rigidity cannot be obtained.

In the case where the base is formed in a substantially square shape, the hanging metal part for supporting the hanging rod hung from the upper four corners of the outer frame is not integrated, but is constituted by a separate part. The parts and the base are fastened with screws etc., so the number of parts is large, and even if the hanging bracket is integrated, there is a problem such as insufficient strength, and the position of the hanging bracket Was only at the same height as the general surface of the base, and its position could not be set to an arbitrary position.

[0010]

SUMMARY OF THE INVENTION The present invention provides an outer tub mounted in an outer frame, a washing and dewatering tub rotatably disposed in the outer tub, and a rotatable inner bottom of the washing and dewatering tub. And a base attached to the lower surface of the outer tank so as to cover the lower surface of the outer tank, and formed by pressing a steel plate. And four suspension rods for suspending the base, a clutch mechanism as a drive unit attached to the center of the lower surface of the base, and placed a little apart next to the clutch mechanism, and on the lower surface of the base. A drive motor as a drive unit to be attached, a transmission belt hung over the drive motor and the clutch mechanism, and a four-sided belt formed at substantially equal intervals on the outer peripheral side of the base and receiving the vibration-proof spring at the lower surface. With two hanging brackets In automatic washing machines that, in the central portion of the base was formed to push downward
The drive unit mounting part and the horizontally long
A drive unit storage unit is provided, and the drive unit storage unit
The drive section so that the central axis of the length passes through the center of the base
A storage unit is disposed, and the driving unit storage unit is the driving unit.
Extruded upward, opposite to the direction of the mounting part
Form a Jo was upwardly pushed to the drive unit attachment portion form
Two extruded portions are further provided, and the two extruded portions are provided.
The protruding part is perpendicular to the horizontally long central axis of the driving part storage part.
And on the axis passing through the center of the base
The base is disposed opposite to the drive unit mounting unit.
By having the drive unit storage unit, the drive unit storage unit
The base from the center of the base along the elongated central axis.
The cross-sectional shape of the base on the axis toward the edge of the base is upward
Located at the edge of the drive unit storage unit
With the shape of the drive unit mounting part that has been pushed downward.
Eteori and said base drive the said drive unit housing portion
By providing a moving part mounting part and two pushing parts,
Center of the base along the axis perpendicular to the transverse central axis
Of the base on an axis from
The cross-sectional shape is such that the drive unit storage section extruded upward and
Of the drive unit, which is provided on the edge of
Attached part and further pushed up on the edge side
It has the push-out portion, the four hanging metal fittings extend upward to an extent close to the outer periphery on the bottom side of the outer tub, and a clutch mechanism is disposed in a central portion of the driving portion housing portion. The drive compartment is located next to the clutch mechanism in the drive compartment.
In automatic washing machine, characterized in that a chromatography data.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, a box-shaped outer frame 1 made of a steel plate
A base 4 made of a steel plate is supported by a suspension rod 2 and a vibration-proof spring 3 in a vibration-proof manner.

At four corners of the base 4, hanging metal parts 4a for engaging the hanging rods 2 via vibration isolating springs 3 are provided.

An outer tub 14 made of resin is fastened to the upper portion of the base 4 by screws. The outer tub 14 has a washing and dewatering tub 5 having a substantially circular horizontal cross section and made of stainless steel plate.
Is provided.

An upper fluid balance ring 6 made of synthetic resin is attached to the upper edge of the washing and dewatering tub 5 by screws.

A large number of dewatering holes 5 are provided on the side wall of the washing and dewatering tub 5.
a large rotating blade 7 made of synthetic resin such as polypropylene is installed in the center of the bottom inside, and the outer circumferential surface of the rotating blade 7 is A lower balance ring 8 in which a fluid is sealed is attached to a hollow ring made of a synthetic resin such as polypropylene which is in contact with the surface.

At the upper end of the outer tub 14, a tub cover 9 made of a synthetic resin such as polypropylene is provided to prevent laundry or the like from dropping into a gap between the outer tub 14 and the washing and dewatering tub 5. Is provided.

The drainage device 10 is attached to the outside of the bottom of the outer tub 14 and includes a drainage electromagnetic valve 11 communicating with the inside of the outer tub 14 and a drainage hose 12 connected to the drainage electromagnetic valve 11. I have.

The drain hose 12 extends out of the outer frame 1 through a hole formed in the lower front portion of the side wall. A drive motor 15 and a clutch mechanism 16 are provided at the bottom of the steel plate base 4.
Is fixed.

A drive pulley 17 is fixed to an output shaft 15a of the drive motor 15, and a driven pulley 18 is fixed to an input shaft 16a of the clutch mechanism 16. The pulleys 17 and 18 are connected by a transmission belt 19.

The clutch mechanism 16 includes a clutch and a speed reduction mechanism for switching between a washing drive and a spin-drying drive. A double output shaft 16b extends through the base 4 and the outer tub 14 to form the outer tub. 14, the washing and dewatering tub 5 is connected to the outer shaft, and the rotor 7 is connected to the inner shaft.

A top cover 20 is attached to the upper end of the outer frame 1, and a clothes inlet 2 through which clothes can be put into the washing and dewatering tub 5 is provided at the center of the top cover 20.
The front panel box 20b is formed on the front side, and the rear panel box 20c is formed on the rear side.

The upper part of the clothing inlet 20a is an open / close lid 21.
A control device 22 and the like are installed in the front panel box 20b, and a water supply solenoid valve 24 connected to a water inlet 23 is installed in the rear panel box 20c. The washing and dewatering tub 5 is made of a stainless steel plate, and is formed by fastening a lower end edge of a cylindrical body portion 5b and an upper end edge of a substantially bowl-shaped bottom portion 5c made of a stainless steel plate by caulking.

The bottom portion 5c is formed with a step so that the upper edge portion connected to the body portion 5b is larger in diameter than the lower portion into which the lower fluid balance ring 8 is fitted, and the bottom side of the bottom portion 5c is screwed. The outer shaft of the dual output shaft 16b of the clutch mechanism 16 is connected to the flange 5d.

The inner shaft of the double output shaft 16b penetrates through the flange 5d and the bottom 5c, and the rotating blade 7 is coupled to the tip thereof. The rotating blade 7 is integrated with the rotating blade 7 on the back side. Is provided.

At the time of washing, the output of the driving motor 15 is transmitted from the driving pulley 17 to the clutch mechanism 16 via the transmission belt 19 from the driven pulley 18, and the rotating blades 7 located at the bottom of the washing and dewatering tub 5 are washed. By rotating, the laundry in the washing and dewatering tub 5 is agitated and the laundry is performed.

After the completion of the washing process, the water in the washing and dewatering tub 5 and the outer tub 14 is discharged to the outside of the machine through the drain valve 11 to perform the dewatering process.

At this time, an imbalance occurs in the washing and dewatering tub 5 due to the clothes containing water, and an uneven load is generated.
Vibration is transmitted from the outer shaft of the heavy output shaft 16b to the steel plate base 4 via the clutch mechanism 16.

The steel plate base according to the embodiment of the present invention has a large height in order to cope with vibration transmitted to the steel plate base due to the increase in washing capacity and the accompanying increase in the diameter of the washing and dewatering tub. The purpose is to increase rigidity.

Next, the steel plate base of the present invention will be described with reference to FIGS.

In the figure, the outer tank 14 is made of a steel base 4.
The outer tub 14 and the base 4 made of a steel plate are fastened with screws or the like provided at the bottom of the outer tub by a screw boss or the like.

The base 4 has a substantially square shape, and its outer dimensions are larger than the outer dimensions of the bottom of the outer tub 14.

At the center thereof, there is provided a drive portion mounting portion 4e which is extruded in a substantially oval shape, and a drive portion storage portion 4c having a substantially elliptical shape is provided at the center portion of the drive portion mounting portion 4e. It is extruded one step from the part 4e, thereby increasing the rigidity in the longitudinal direction on the substantially elliptical shape of the driving part storage part 4c.

An extruding portion 4d having a step in the same direction as the driving portion housing portion 4c is also provided in a direction perpendicular to the longitudinal direction of the substantially oval of the driving portion housing portion 4c, thereby increasing the rigidity in the vertical direction. Thus, high rigidity can be achieved in any direction.

Here, it is possible to obtain the same effect as described above by making the shape of the driving portion housing portion 4c a cross shape, but in the case of the substantially square base shown in this embodiment, When this is performed by press molding, since the material is not brought in a portion where the longitudinal direction and the vertical direction intersect, a crack is generated in this portion, so that press molding becomes impossible.

For this reason, the base 4 according to the embodiment of the present invention is used.
Then, the drive section storage section 4c and its vertical extrusion section 4d
Are separately formed, and by changing the extrusion height, processing by general press molding is enabled.

A surface having a screw hole for fixing the base 4 to a screw boss arranged on the outer periphery of the bottom of the outer tub 14 is formed on the outer periphery of the substantially oval-shaped driving portion mounting portion 4e.

This surface is further pushed out from the pushing part 4d in the same direction as the driving part accommodating part 4c.

The four corners of the base 4 are bent upward so as to surround the bottom of the outer tub 14, and the tip of the upward bent portion is further bent outward.

In this portion, there are provided a hanging rod 2 which is hung from four corners of the outer frame 1 and a hanging bracket 4a having a spherical portion for receiving the vibration isolating spring 3.

Further, the rigidity of the outer peripheral portion of the base 4 is increased by providing a rising portion extending upward on the entire outer peripheral portion of the base 4.

By adopting such a configuration,
The base 4 having high rigidity can be easily formed by general press forming in a small number of steps.

Also, in order to escape a hose for guiding water that has flowed out of the overflow port at the upper part of the outer tank to the drainage device, a relief portion 4i is provided in a part of a substantially circular shape.

As a result, the hose is prevented from protruding extremely outward, and even when the outer tank 14 moves freely during transportation or the like, the outer frame 1 is hit and the outer frame 1 is deformed. Or not.

The bottom of the outer tub 14 and the base 4 are fastened with a screw boss near the outer periphery of the bottom of the outer tub 14 and screwed through the base 4 made of steel plate.

To be provided near the outer periphery of the bottom of the outer tank 14;
When the vibration from the base 4 is transmitted to the outer tank 14 by covering the entire bottom of the outer tank 2 with the entire base 4, the vibration is dispersed to the side wall and the bottom of the outer tank 2, and the deformation of the outer tank bottom is reduced. As compared with the conventional method, the outer tank 14 can be reduced.
Vibration transmission to the bottom of the vehicle is reduced.

In the case of a structure in which the outer tub 14 is received only at the bottom, the outer tub 14 may be subjected to vibrations during washing and spin-drying.
May fall with respect to the axis of the clutch mechanism 16, and may come into contact with the washing and dewatering tub 5.

For this purpose, a rib 14a protruding from the side surface of the outer tub 14 abuts on the hanging metal part 4a for the purpose of preventing the outer tub 14 from falling down, thereby preventing the deformation of the hanging metal part 4a. it can.

The same effect can be obtained by providing a screw boss 14b at a portion of the rib 14a which abuts on the hanging metal part 4a and screwing the screw boss 14b through the hanging metal part 4a of the base 4.

In such a case, the outer tub 14 can be received more reliably by forming the flat portion 4f for properly receiving the rib 14a and the screw boss 14b in the hanging metal part 4a.

The hanging bracket 4a is provided with a slit 4g so that the hanging bar can be attached from the lateral direction of the base 4 in order to improve workability when assembling the hanging bar 2. At the base of the hanging metal part 4a, a hanging metal part 4a is provided.
In order to prevent deformation due to the force generated by the movement of the outer tub during the washing and dehydration processes,
Is provided.

Further, the shape of the hanging metal part 4a is made substantially triangular so as to increase the strength for the purpose of suppressing deformation of the hanging metal part 4a.

As described above, the base 4 has a structure including the bottom of the outer tank 14. Here, a method of connecting the drainage device provided outside the bottom of the outer tank 14 will be described.

A drainage device 10 is disposed outside the bottom of the outer tub 14 for discharging the water stored in the outer tub 14 to the outside of the machine.

The drainage device 10 is composed of a drainage electromagnetic valve 11 and a drainage hose 12. The drainage electromagnetic valve 11 is fixed by screws or the like with a screw boss or the like projecting from the bottom of the outer tank 14 through the base 4 and the like. You.

At this time, when the drain electromagnetic valve 11 is directly fixed to the base 4 and the drain electromagnetic valve 11 is adjusted to an arbitrary height and is to be mounted, a part of the base 4 made of a steel plate is removed. Since it is necessary to process by extrusion or the like, the drainage solenoid valve 11 can be easily fixed at an arbitrary height by directly fastening to a screw boss or the like projecting from the bottom of the outer tank 14 as in this embodiment. It becomes possible.

In general, when a fully automatic washing machine is used, steam and dew condensation adhere to the surface of the outer tub 14.

In such a case, the moisture adhering to the surface of the outer tub 14 travels along the surface of the outer tub 14 and drops on the floor.

In the base 4 of this embodiment, the outer dimension is larger than the outer dimension of the bottom of the outer tub 14 and the outermost peripheral portion is bent upward, so that it is transmitted from the surface of the outer tub 14. Moisture can be received at the base 4.

At this time, the received water is temporarily stored on the lowermost surface of the base 4 and the water is guided to the drainage device 10 by a pipe or the like, so that the floor surface can be prevented from getting wet.

When a hole for fixing a wire saddle or the like for fixing a harness or the like for electrically connecting a driving device is provided on the lowermost surface of the base 4,
By making the periphery of the hole higher by one-step extrusion, it is possible to prevent water from falling from the hole.

The base 4 made of a steel plate is used as an outer tank 14 made of a resin.
The base 4 is designed to wrap around the bottom of the base 4 so that the base 4 minimizes damage even in the event of a misfire from charged parts such as motors and capacitors mounted on the base 4. A highly safe washing machine can be provided.

[0063]

As described above, according to the present invention, it is possible to provide a washing machine having a high rigidity base in which the outer tub is less likely to fall during the washing and spin-drying operation, and the hanging bracket is integrally formed.

Further, it is possible to provide a washing machine in which the mounting height of the drainage device can be easily determined arbitrarily and the floor surface and the like are less likely to be wet by dew condensation or the like.

Further, a structure in which a resin outer tub and a charged portion such as a condenser and a motor are shut off by a base can provide a highly safe washing machine.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a washing machine according to an embodiment of the present invention.

FIG. 2 is a bottom view of a conventional washing machine.

FIG. 3 is a bottom view of the washing machine showing one embodiment of the present invention.

FIG. 4 is a longitudinal sectional view of a base attachment portion of the washing machine.

FIG. 5 is an enlarged view of the hanging metal part of the base (FIG. 4, P view).

FIG. 6 is a front view of a base showing one embodiment of the present invention.

FIG. 7 is an aa cross-sectional view of the base.

FIG. 8 is a bb cross-sectional view of the base.

FIG. 9 is a cross-sectional view of the base taken along the line c-c (suspension fittings).

FIG. 10 is a sectional view of the base taken along line dd (wire saddle mounting portion).

FIG. 11 shows a drainage device mounting portion.

[Explanation of symbols]

4 ... Base, 5 ... Washing and dewatering tub, 14 ... Outer tub, 15 ... Drive motor, 16 ... Clutch mechanism.

──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Tamotsu Kamori 1-1-1, Higashitaga-cho, Hitachi City, Ibaraki Pref. Hitachi, Ltd. Electrical Equipment Division, Taga Headquarters (56) References JP-A-59-57698 JP, A) Japanese Utility Model Showa 48-11681 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) D06F 37/40 D06F 39/12

Claims (1)

(57) [Claims] An outer tub mounted in an outer frame, a washing and dewatering tub rotatably placed in the outer tub, a stirring blade rotatably mounted on the inner bottom of the washing and dewatering tub, A base, which is attached to the lower surface so as to cover the lower surface of the outer tub entirely and is formed by pressing a steel plate , and hangs down from the four corners of the outer frame. Four suspension rods for suspending the base, a clutch mechanism serving as a drive unit attached to the center of the lower surface of the base, and a drive attached to the lower surface of the base a little apart from the clutch mechanism A drive motor as a part, a transmission belt hung on the drive motor and the clutch mechanism, and four hanging members formed at substantially equal intervals on the outer peripheral side of the base and receiving the vibration-proof spring at the lower surface. Fully automatic washing machine with , In the central portion of the base, formed to push downward
Drive part mounting part, and provided on this drive part mounting part.
A horizontally long drive unit storage unit is provided, and the drive unit storage unit
The lateral center axis passes through the center of the base.
A driving part storage part is arranged, and the driving part storage part is
Push out upwards, opposite to the pushing direction of the drive
Shape to form, upwardly extruded two shapes to the drive unit attachment portion
An extrusion is further provided, wherein the two extrusions are
Only perpendicular to the horizontal center axis of the drive unit storage unit.
Also on the axis passing through the center of the base
And the base includes the drive unit mounting unit and the drive unit storage unit.
With this, the drive unit housing section is aligned with the horizontally long central axis.
On the axis from the center of the base to the edge of the base
The cross-sectional shape of the base in the above is extruded upward
The drive unit storage unit and the lower side located on the edge side are pushed out
The drive unit mounting portion, and the base has the drive unit housing portion and the drive unit mounting portion.
And the two extruded parts are provided so that
From the center of the base along the axis perpendicular to the axis.
The cross-sectional shape of the base on the axis toward the edge of the base is
The drive unit storage section pushed upward and the edge side
The drive unit mounting portion pushed downward and
The extruded extrusion provided on its edge side
The four hanging metal fittings extend upward to a degree close to the outer periphery near the bottom of the outer tub, and a clutch mechanism is disposed at the center of the drive housing. , Clutch in the drive storage
A fully automatic washing machine characterized in that a drive motor is arranged next to the mechanism .