JP2000271383A - Attaching structure for mechanism part and water discharge valve case to water tank of washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the attaching structure of a mechanism part and a water discharge valve case to the water tank of a washing machine by which various components such as a motor are easily separated and disassembled from a bearing base by one tool such as a screwdriver at the time of disassembling the washing machine, the water discharge valve case is prevented from obstructing the separation of the bearing base at the time of separating a bearing base assembly from the water tub and the workability of separation and disassembly is improved. SOLUTION: In the washing machine for which the bearing base 9 where the driving mechanism of the motor 6 or the like, the main bearing assembly of a reduction switching mechanism 7 or the like and the mechanism part of a water discharge valve driving unit 11 or the like are disposed and the water discharge valve case 12 are fixed to the lower surface of the bottom part of the water tank 3, on the head parts of a bolt 10 for fixing the bearing base 9 to the water tank 3 and the respective bolts 10 of the different diameters of screw parts for fixing the mechanism part of the motor 6 or the like, the main bearing assembly of a reduction mechanism or the like, the mechanism part of the water discharge valve driving unit 11 or the like and the water discharge valve case 12 to the bearing base 9, the same diameter part is provided so as to loosen the bolts 10 by the same tool.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mechanism for attaching a mechanism to a water tank of a washing machine and a drain valve case.

[0002]

2. Description of the Related Art For example, a one-tank type full-automatic washing machine has a water tank 3 swingably supported by a vibration damping device 2 in an outer box 1 as shown in FIG. The washing and dewatering tub 5 provided with the rotating wings 4 is rotatably arranged.
A drive mechanism such as a motor 6, a deceleration switching mechanism 7 which is a main bearing assembly such as a clutch, and a drain valve drive unit 11 such as an actuator are disposed below the bottom of the motor. The motor 6 is driven by a driving force via a rotary shaft 6a. Is transmitted to the rotor 4 and the washing / dewatering tub 5.

A drive mechanism such as the motor 6 and a deceleration switching mechanism 7 such as a clutch, and a drain valve drive unit 11 such as an actuator are mounted on the water tank 3 by a motor 6 and a deceleration switching mechanism 7 as a bearing base assembly 8. The valve drive unit 11 is fixed to the bearing base 9 with bolts 10 so as to be integrated, and the bearing base assembly 8 is fixed to the bottom lower surface of the water tank 3 with bolts 10. In the figure, reference numeral 14 denotes a U-shaped transport bracket for protecting the deceleration switching mechanism 7, and the transport bracket 1
4 is also fixed to the bearing base 9 with bolts 10.

The drain valve case 12 connected to the drain valve drive unit 11 is also fixed to the bearing base assembly 8, and the bearing base 9 is disposed on the lower surface of the bottom of the water tank 3, so that the drain valve case 12 can be used. It is arranged at a predetermined position below the water tank 3 as an integral part of the mechanism section.

The drain valve case 12 has an opening communicating with a drain port 13 formed at the bottom of the water tub 3 to discharge the washing water in the washing / dewatering tub 5 and the water tub 3 to the outside of the machine through a drain hose 15. However, as shown in FIG. 8, the opening of the drain valve case 12 is located at the bottom of the water tank 3 so as not to leak water.
3 is adhered to the flange portion with an adhesive 22.

In recent years, it has been desired to reuse materials for the purpose of reducing waste, effectively using materials, and the like. In such a washing machine, the materials of the washing machine to be discarded are recycled. It is thought that. In order to reuse the materials, the washing machine is disassembled into parts to some extent, and parts containing valuables and harmful substances are separated and decomposed, and then crushed for each part with a crusher or the like. I have. By the way, a method of crushing the entire washing machine in a product state and then selecting and separating materials to be reused is also conceivable, but it is difficult with current technology, and manual disassembly at a stage before crushing is possible. Required.

[0007] In the washing machine, the water tub 3 is made of plastic and is a valuable resource, and is therefore an object of material reuse. Parts such as the motor 6 can also be reused depending on the usage time. Therefore, it is necessary to separate the water tank 3 and the motor 6 and the like made of different materials. However, a bearing base in which a drive mechanism such as the motor 6, a deceleration switching mechanism 7 such as a clutch, and a drain valve drive unit 11 such as an actuator are integrally mounted. By removing the bolt 9 from the water tank 3 by removing the bolt 9, the entire bearing base assembly 8 is separated from the water tank 3, and then the bolt 10 is removed from the bearing base 9, and the deceleration switching of the drive mechanism such as the motor 6 and the clutch is performed. The mechanism 7 and the drain valve drive unit 11 such as an actuator are individually separated to separate components.

[0008]

A bolt 10 for fixing a drive mechanism such as a motor 6, a deceleration switching mechanism 7 such as a clutch, a drain valve drive unit 11 such as an actuator to a bearing base 9, and a bearing base 9 for a water tank 3. The fixing bolt 10 is used for bending moment, vibration,
It must be reliable so that it can withstand external forces such as impact and torsion. For this purpose, bolts that generate a large axial force are adopted as the bolts 10, and the sizes of the bolts 10 are formed differently in accordance with the quality of each component.

For this reason, bolts 10 of different sizes, for example, of about five types are used for the bolts 10. When the bearing base 9 is separated from the water tank 3 and each part is further separated from the bearing base 9, In order to cope with the bolts 10 having different diameters, a tool such as a screwdriver for loosening the bolts 10 should be prepared by using the same number of different types of bolts, or
Even when using a single screwdriver, it was necessary to replace the box for bolts of different diameters, and the workability was poor.

Further, the separation of the drain valve case 12 connected to the drain valve drive unit 11 is fixed to the bearing base 9 and integrated with the bearing base assembly 8 in order to improve the workability during assembly. However, since the drain valve case 12 has a structure in which the opening is further bonded to the drain port 13 of the water tank 3 as described above, even if the bearing base assembly 8 is separated and disassembled from the water tank 3 at the time of disassembly and separation, drainage is performed. Valve case 12
Are still bonded to the water tank 3.

Therefore, in order to completely separate the bearing base assembly 8 from the water tank 3, the drain valve case 12 must be further broken or greatly deformed. Sex was not good.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned disadvantages of the prior art, and to easily separate and disassemble various parts such as a motor from a bearing base with a single tool such as a screwdriver, and to separate a bearing base assembly from a water tank. An object of the present invention is to provide a mechanism for mounting a drain valve case to a water tank of a washing machine that can improve the workability of separation and disassembly by preventing a drain valve case from hindering separation of a bearing base.

[0013]

In order to achieve the above object, the present invention firstly hangs a water tank in an outer box so as to swing freely,
A washing and dewatering tub provided with rotating blades at the bottom is rotatably disposed in the water tub, and a drive mechanism such as a motor, a main bearing assembly such as a speed reduction mechanism, a drain valve drive unit, etc. In a washing machine in which a bearing base and a drain valve case in which a mechanism is disposed are fixed, a bolt for fixing the bearing base to a water tank, a mechanism such as a motor on the bearing base, a main bearing assembly such as a reduction mechanism, The same diameter part is provided on the head of each bolt with a different diameter of the screw part for fixing the mechanism part such as the drain valve drive unit and the drain valve case so that the screw can be loosened with the same tool By removing bolts, the work of separating the bearing base from the water tank and the work of removing the motor, main bearing assembly and drain valve drive unit from this bearing base can be performed with a single tool such as a screwdriver. Good workability La dismantling separation.

Second, when the diameter of the same diameter portion of the screw head is smaller than the diameter of the screw portion of the bolt, a screw head having a diameter larger than the diameter of the screw portion is formed, and the screw head is formed above the screw head. Since the head of the same diameter part is projected, even a screw formed with a large diameter of the screw part from the point of mounting strength, for a head with a diameter larger than this screw part, By further projecting a small-diameter head on the head and making the small-diameter head the same diameter as the heads of the other bolts, it is possible to provide the same-diameter portion on all bolt heads. it can.

Third, by forming the same diameter portion of the screw head as a square hole formed at the center of the screw portion, a square hole portion of the same diameter can be formed for screw portions of different diameters. From
If a tool such as a wrench is inserted into the square hole and the bolt is removed, all parts can be separated with the same tool.

Fourthly, since the opening of the drain valve case to the water tank is fixed to the lower surface of the bottom of the water tank by screwing, the opening of the drain valve case can be opened only when the bearing base is separated from the water tank. Is connected to a water tank, but the opening is easily separated from the water tank by removing a screw. Therefore, the bearing base can be easily separated and disassembled from the water tank with the drain valve case attached.

Fifthly, a water tub is swingably suspended in an outer box, and a washing and dewatering tub having a rotating blade provided on a bottom portion is rotatably disposed in the water tub. In a washing machine in which a bearing base in which a main bearing assembly such as a drive mechanism such as a motor, a deceleration mechanism or the like, and a mechanism such as a drain valve drive unit are disposed is fixed, a drain valve case connected to the drain valve drive unit is mounted on a water tank side. When the bearing base is separated from the water tank, the entire drain valve case is fixed to the water tank side even when the opening of the drain valve case is fixed to the water tank side. Is not fixed.

Accordingly, the drain valve case does not hinder the separation of the bearing base from the water tank, and the bearing base can be separated from the water tank independently without the need to separate the drain valve case from the water tank. The workability of dismantling is improved.

[0019]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view showing a first embodiment of a mechanism for mounting a mechanism portion and a drain valve case to a water tub of a washing machine according to the present invention, when the water tub is viewed from a bottom surface side. Since it has already been described, the detailed description is omitted here.

In the present invention shown in FIG. 1, a drive mechanism such as a motor 6, a deceleration switching mechanism 7 which is a main bearing assembly such as a clutch, and a drain valve drive unit 11 such as an actuator are provided on the lower surface of the bottom of the water tank 3. Have been. The drive mechanism such as the motor 6, the deceleration switching mechanism 7 such as a clutch, and the drain valve drive unit 11 such as an actuator are attached to the water tank 3 by a bearing base assembly 8.
The deceleration switching mechanism 7 and the drain valve drive unit 11 are fixed to the bearing base 9 with bolts 10 to be integrated, and the bearing base assembly 8 is fixed to the bottom lower surface of the water tank 3 with bolts 10. In the figure, reference numeral 14 denotes a U-shaped transport bracket for protecting the deceleration switching mechanism 7, and the transport bracket 14 is also fixed to the bearing base 9 with bolts 10.

The drain valve case 12 connected to the drain valve drive unit 11 is also fixed to the bearing base assembly 8, and the bearing base 9 is disposed on the lower surface of the bottom of the water tank 3, so that the drain valve case 12 is also different. It is arranged at a predetermined position below the water tank 3 as an integral part of the mechanism section.

In the present invention, such a mechanism and the transport fitting 14 are used.
A bolt 10 for fixing the bearing base 9 to the bearing base 9 and a bolt 10 for fixing the bearing base 9 to the water tank 3 are provided with the same diameter portion 16 on the head 10a. FIG. 2 shows an example, and FIG. 2 (a) shows a bolt 10 of an intermediate size.
The diameter a of the head portion 10a having a larger diameter than the screw portion 10b is determined to be a reference size of the same diameter portion.

As for the large-diameter bolt 10, as shown in FIG. 2B, both the threaded portion 10b and the head 10a have a larger diameter than the intermediate-sized bolt 10 shown in FIG. 2A. However, a head having the same diameter as the head 10a of the intermediate-sized bolt 10 is further protruded above the large-diameter head 10a, and this portion is defined as the same-diameter portion 16.

Further, as shown in FIG.
The bolt 10 of the intermediate size shown in FIG.
For a bolt 10 that is thinner, the head 1 of the bolt 10
2a is formed to have the same diameter as the head 10a of the intermediate-sized bolt 10 shown in FIG.

A drive mechanism such as a motor 6, a deceleration switching mechanism 7 which is a main bearing assembly such as a clutch, a drain valve drive unit 11 such as an actuator, and a drain valve case 1.
2 is selected from among a plurality of types of bolts 10 having the same diameter portion 16 shown in FIGS. To form a bearing base assembly 8.

The drain valve case 12 has, as a mounting structure to the water tank 3, a flange 17a having a gasket insertion groove 17b formed at the tip thereof at a water outlet 13 on the water tank 3 side and a boss 18 for screwing. The opening 1 is provided on the drain valve case 12 side.
A flange 12b for screwing is provided on the outside of 2a.
In order to fix the drain valve case 12 to the water tank 3, the packing 20 is inserted into the insertion groove 17b at the tip of the flange 17a, and the opening 12 of the drain valve case 12 is inserted into the insertion groove 17b.
a and insert the flange 12b into the boss 18
And the two are joined together with screws 19.

At the time of disassembly and separation of the washing machine, the bearing 10 is separated from the water tub 3 by removing the bolt 10. At this time, the drain valve case 1 to which the bearing base 9 is fixed as described above.
Since the two openings 12a are fixed to the water tank 3, the separation of the bearing base 9 from the water tank 3 requires only the bearing base assembly 8
Cannot be completely separated from the water tank 3, but the drain valve case 1
2 can be separated from the water tank 3 by removing the screw 19.

When the bearing base assembly 8 is completely separated from the water tank 3 in this manner, the bolts 10 for fixing various components such as the motor 6 to the bearing base 9 are removed with a tool such as a screwdriver, and the bearing base 9 is removed. From each other, and separate each component. In this case, since all bolts 10 are provided with the same diameter portion 16, a tool such as a screwdriver may be used that matches the same diameter portion 16, and only one kind is sufficient and workability is good. .

The bolt 10 is not limited to the above-described one, but as shown in FIG. 3, a screw 10b having a diameter corresponding to each component is formed around a square hole 10c having the same diameter. The square hole 10c may be the same diameter portion 16. In this case, a tool such as a wrench 21 is inserted into the square hole 10c and the bolt 10 is loosened.
Since c is the same diameter part 16, only one kind of wrench 21 is sufficient.

FIG. 5 shows a mounting portion of the drain valve case 12 to the water tank 3, which is a main part of the second embodiment.
Has a structure which is not fixed to the bearing base 9 but is fixed only to the bottom lower surface of the water tank 3. Thereby, if the bearing base 9 is separated from the water tank 3 at the time of disassembly, the bearing base assembly 8 is completely separated from the water tank 3 and the workability of disassembly and separation of the bearing base assembly 8 is improved.

[0031]

As described above, the water tub of the washing machine according to the present invention firstly comprises a washing and dewatering tub having a water tub swingably suspended in an outer box and a rotating blade provided at the bottom. A bearing base and a drain valve case, which are rotatably disposed in the bottom of the water tank, are provided with a drive mechanism such as a motor, a main bearing assembly such as a reduction mechanism, and a mechanism such as a drain valve drive unit on the lower surface of the bottom of the water tank. In a fixed washing machine, a screw for fixing the bearing base to the water tank, a mechanism such as a motor, a main bearing assembly such as a reduction mechanism, a mechanism such as a drain valve drive unit, and a drain valve case are fixed to the bearing base. The same diameter part is provided on the head of each bolt with a different thread part diameter to enable the bolt to be loosened with the same tool, so that the bolt is removed and the bearing base is separated from the water tank. Work and this bearing base Motor, work to remove the main bearing assembly and drain valve driving unit, good workability dismantling separated from done with a tool, such as one type of driver.

Second, when the diameter of the same diameter portion of the screw head is smaller than the diameter of the screw portion of the bolt, a screw head having a diameter larger than the diameter of the screw portion is formed, and the upper portion thereof is formed. Since the head of the same diameter part is projected, even a screw formed with a large diameter of the screw part from the point of mounting strength, for a head with a diameter larger than this screw part, By further projecting a small-diameter head on the head and making the small-diameter head the same diameter as the heads of the other bolts, it is possible to provide the same-diameter portion on all bolt heads. it can.

Third, by forming the same diameter portion of the screw head as a screw hole formed at the center of the screw portion, a screw hole portion of the same diameter can be formed for screw portions of different diameters. Therefore, if a tool such as a wrench is inserted into the screw hole and the screw is removed, all parts can be separated with the same tool.

Fourth, since the opening of the drain valve case to the water tank is fixed to the lower surface of the bottom of the water tank by screwing, the opening of the drain valve case can be opened only when the bearing base is separated from the water tank. Is connected to a water tank, but the opening is easily separated from the water tank by removing a screw. Therefore, the bearing base can be easily separated and disassembled from the water tank with the drain valve case attached.

Fifth, a water tub is swingably hung in an outer box, and a washing and dewatering tub having a rotating blade provided on a bottom portion is rotatably disposed in the water tub. In a washing machine in which a bearing base in which a main bearing assembly such as a drive mechanism such as a motor, a deceleration mechanism or the like, and a mechanism such as a drain valve drive unit are disposed is fixed, a drain valve case connected to the drain valve drive unit is mounted on a water tank side. When the bearing base is separated from the water tank, the entire drain valve case is fixed to the water tank side even when the opening of the drain valve case is fixed to the water tank side. Is not fixed.

Accordingly, the drain valve case does not hinder the separation of the bearing base from the water tank, and the bearing base can be separated from the water tank independently without the need to separate the drain valve case from the water tank. The workability of dismantling is improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of a mounting structure of a mechanism section and a drain valve case to a water tank of a washing machine of the present invention.

FIG. 2 is a perspective view of an example of a bolt which is a main part of the first embodiment of the mounting structure of the mechanism section and the drain valve case of the washing machine of the present invention to a water tank.

FIG. 3 is a perspective view of another example of a bolt which is a main part of the first embodiment of the mounting structure of the mechanism section and the drain valve case of the washing machine according to the present invention.

FIG. 4 is a longitudinal sectional side view of a drain valve case mounting portion to the water tank, showing a first embodiment of a mechanism for mounting a mechanism portion and a drain valve case to the water tank of the washing machine of the present invention.

FIG. 5 is a perspective view of a drain valve case mounting portion to a water tub, showing a second embodiment of a mechanism for mounting a mechanism portion and a drain valve case to a water tub of the washing machine of the present invention.

FIG. 6 is a vertical sectional side view of the washing machine.

FIG. 7 is a bottom view showing a mounting structure of a mechanism section and a drain valve case to a water tub of a conventional washing machine.

FIG. 8 is a vertical side view of a mounting portion of a drain valve case to a water tub, showing a mounting structure of a mechanism portion and a drain valve case to a water tub of a conventional washing machine.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Outer box, 2 ... Anti-vibration device, 3 ... Water tank, 4 ... Rotor blade, 5 ... Washing and dewatering tank, 6 ... Motor, 6a ... Rotating shaft, 7 ... Reduction switching mechanism, 8 ...
Bearing base assembly, 9: Bearing base, 10: Bolt,
10a: Head, 10b: Screw, 10c: Square hole, 11: Drain valve drive unit, 12: Drain valve case, 12a: Opening, 12b: Flange, 13 ...
Drain port, 14 ... Transport bracket, 15 ... Drain hose, 16 ... Same diameter part, 17a ... Flange, 17b
… Insertion groove, 18… boss, 19… screw,
Reference numeral 20: packing, 21: wrench, 22: adhesive

Continuing from the front page (72) Inventor Yuichi Hasebe 1-1-1, Yamate, Funabashi-shi, Chiba Pref. Japan Incorporated (72) Inventor Junji Miyoshi 1-1-1, Yamate, Funabashi-shi, Chiba Pref. In-house (72) Inventor Masanobu Yatsu 1-1-1, Yamate, Funabashi-shi, Chiba Japan Incorporated Steel Corporation (72) Inventor Kunio Inose 1-1-1, Yamate, Funabashi-shi, Chiba In-house Nihonken Steel Corporation (72) Inventor Takeshi Sugino 1-1-1 Yamate, Funabashi-shi, Chiba F-term in Nippon Kentetsu Corporation (reference) 3B155 BA23 BB04 BB05 CB32 DC23 HB05 HB07 HB09 MA01 MA02

Claims (5)

[Claims] 1. A water tub is swingably suspended in an outer case, and a washing and dewatering tub provided with a rotary wing on a bottom portion is rotatably disposed in the water tub, and a motor is provided on a lower surface of a bottom portion of the water tub. In a washing machine in which a drive base such as a main bearing assembly such as a reduction mechanism and a drain valve drive unit are disposed and a drain base is fixed, a bolt for fixing the bearing base to a water tank is provided. The same is applied to the head of each bolt having a different diameter of a screw portion for fixing a mechanism portion such as a motor, a main bearing assembly such as a reduction mechanism, a drain valve drive unit, and a drain valve case to the bearing base. A mechanism for mounting a mechanical portion to a water tank of a washing machine, wherein the same diameter portion is provided so that the bolt can be loosened with the tool. 2. When the diameter of the same diameter portion of the screw head is smaller than the diameter of the screw portion of the bolt, a screw head having a diameter larger than the diameter of the screw portion is formed, and the same diameter is formed above the screw head. 2. The structure according to claim 1, wherein a head portion of the washing section is protruded. 3. The structure according to claim 1, wherein the same diameter portion of the screw head is a square hole formed at the center of the screw portion. 4. The structure for mounting a mechanism to a water tub of a washing machine according to claim 1, wherein the opening of the drain valve case to the water tub is fixed to a bottom lower surface of the water tub by screwing. . 5. A washing and dewatering tub having a water tank swingably suspended in an outer box, and a washing and dewatering tank provided with a rotary wing at a bottom portion is rotatably disposed in the water tank, and a motor is provided on a lower surface of a bottom portion of the water tank. In a washing machine with a fixed bearing base on which a main bearing assembly such as a drive mechanism and a speed reduction mechanism and a mechanism such as a drain valve drive unit are disposed, a drain valve case connected to the drain valve drive unit is provided only on the water tank side. A structure for attaching a drain valve case to a water tank of a washing machine, which is fixed.