JPS6143431Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a washing machine having a structure in which a water discharge chamber for accommodating a water discharge mechanism such as a drainage mechanism and an overflow mechanism is formed inside a washing tub.

Conventional washing machines have a groove-shaped water discharge chamber that bulges outward and extends vertically inside a plastic washing tub, and a drainage mechanism and an overflow mechanism are provided as a water discharge mechanism in this water discharge chamber. There is a structure in which a strainer member is arranged at the opening of the water discharge chamber facing the inside of the tank, thereby consolidating both the drainage and overflow mechanisms in one place to facilitate inspection. However, in such a device, the opening of the water discharge chamber expands due to distortion during molding, thermal deformation, or the load of water in the washing tub, which causes the opening and the strainer member to expand. If there is a large gap between the
This has the disadvantage that the strainer member may lose its stable attachment state.

The present invention has been made to eliminate the above-mentioned drawbacks, and its purpose is to provide a washing machine that can prevent the expansion of the opening of the water discharge chamber with an extremely simple structure that does not require separate parts. There is something to do.

An embodiment of the present invention will be described below with reference to the drawings. Reference numeral 1 designates a plastic washing tub in a two-tub washing machine, and a groove-shaped water discharge chamber 2 that extends vertically and bulges outward is integrally formed inside the tub. The upper end of this water discharge chamber 2 is open for mold cutting during molding, and the water discharge chamber 2 has a vertically elongated opening 2a that is continuous with the open upper end and faces the inside of the washing tub 1. It is formed.
3 is a recess formed at the bottom of the washing tub 1, in which a pulsator 4 is disposed. Reference numeral 5 denotes a water channel that communicates the recess 3 with the lower part of the water discharge chamber 2. 6
is a drainage port formed at the bottom of the water discharge chamber 2,
A drain hose 7 is connected to the drain port 6. Reference numeral 8 denotes a tube support body disposed in the water discharge chamber 2 so as to be movable up and down, and a connecting cylinder portion 9 is integrally formed at the lower end of the tube support body. At the lower end of this connecting cylinder part 9, an annular valve body 10 is provided which approaches and separates from the edge of the drain port 6.
is attached, and an overflow cylinder 11 is connected to the upper end of the connecting cylinder part 9 in an upright state. On the other hand, 12
is an operation box, which is disposed at the upper end of the washing tub 1 so as to close the open upper end of the water discharge chamber 2. 13 is a drainage operation mechanism, which is the operation box 12
It consists of an operating knob 14 provided at the top and a cable 16 which raises the tube support 8 against the elastic force of a compression coil spring 15 by rotating the operating knob 14. here,
The drain port 6 and the valve body 10 constitute a drain mechanism 17, which is in a state where the valve body 10 is in pressure contact with the periphery of the drain port 6 by the compression coil spring 15 at all times, and the drain is stopped, and when the operation knob 14 is turned. When the pipe support 8 is raised by the movement, the water in the washing tub 1 flows from the water discharge chamber 2 into the drain port 6 and is discharged to the outside of the machine. On the other hand, the overflow cylinder 11 and the structure that connects it to the drain hose 7 constitute a overflow mechanism 18, which is used to clean the washing tub 1 during overflow rinsing with the valve body 10 in contact with the periphery of the drain port 6. The water inside flows into the overflow cylinder 11 from the water discharge chamber 2 through its upper end, and is finally discharged outside the machine. Both the drainage mechanism 17 and the overflow mechanism 18, which function as described above, correspond to a water drainage mechanism. Reference numeral 19 denotes a drainage strainer member having a large number of water passage holes 19a, which is attached to the lower part of the opening 2a of the water discharge chamber 2 with a screw 20 and an engagement mechanism 21 so as to close the lower part of the opening 2a. ing. Reference numeral 22 designates a plastic overflow strainer member, in which a group of water passage holes 22a (see FIG. 4) of different shapes and sizes are formed. Therefore, this overflow strainer member 22
is attached to the upper part of the opening 2a of the water discharge chamber 2 to close it, and its mounting structure and mounting procedure will be described below. That is, in the overflow strainer member 22, a pair of protrusions 23, 23, which are reinforcing protrusions, are integrally protruded from the upper ends of both side edges thereof, and extend approximately parallel to each other in the front-rear direction. A reinforcing rib 24 is integrally formed so as to straddle the ribs 23, and a pair of elastically deformable engaging portions 25, 25 extending rearward are integrally protruded from the lower portions of the projecting pieces 23, 23, respectively. ing. On the other hand, a pair of regulating parts 26, 26 extending in the front-rear direction and facing each other are integrally provided at the upper end of the opposite side edge of the opening 2a of the water discharge chamber 2, and the opening 2a
A pair of engaged portions 27, 27 are formed on the opposite side edge portions of the rear surface portions. In addition, in FIG. 1, 28 is the drain strainer member 19.
The engagement recess 29 formed at the upper end is an engagement protrusion formed at the lower end of the overflow strainer member 22. The procedure for attaching the overflow strainer member 22 to the opening 2a of the water discharge chamber 2 will now be described. From the state shown in FIG. 4, first, the engagement protrusion 29 at the lower end of the overflow strainer member 22 is engaged with the engagement recess 28 at the upper end of the drainage strainer member 19, and then the overflow strainer member is centered around the engagement recess 28. 22
is rotated toward the opening 2a to approach the opening 2a from the front. As a result, the engaging portion 25,
25 engages with the engaged parts 27, 27,
A pair of regulating portions 2 in which protruding pieces 23, 23 face each other
6 and 26 on opposite sides 26a and 26a.
In this way, the engaging portions 25, 25 and the engaged portion 27,
27, the overflow strainer member 22 is attached to the opening 2a of the water discharge chamber 2. and,
In this installed state, the opening 2a of the water discharge chamber 2
When the opposite sides 26a, 2 of the regulating parts 26, 26 try to expand due to molding distortion, thermal deformation, etc.
6a abuts and engages with the protruding pieces 23, 23, and the protruding pieces 2
3 and 23 are prevented from moving in the expansion direction, the expansion phenomenon does not occur.

As understood from the above embodiments, the present invention obtains the following actions and effects. That is, an engaged portion and a pair of regulating portions each extending in the front-rear direction and facing each other are provided on opposing side edges of the opening of the water discharge chamber, and the strainer member is engaged with the engaged portion to prevent the strainer member from discharging the strainer member. The engaging portions extend in the front-rear direction and engage opposite sides of the pair of restricting portions when the strainer member is installed to immediately stop the opening from expanding. Since a pair of reinforcing protrusions are provided, it is possible to prevent the opening from expanding, thereby preventing the engaged portion from moving in the expanding direction, thereby stabilizing the attached state of the strainer member. Furthermore, it is possible to prevent a gap from forming between the opening and the strainer member in which a part of clothing such as a button might get caught. Moreover, since the engaged part and the regulating part are formed integrally with the opposite edge of the opening, and the engaging part and the reinforcing protrusion are formed integrally with the strainer member, the above-mentioned effects can be obtained by using a separate member. It can be obtained with a simple configuration that does not require the following. Furthermore, by bringing the strainer member close to the opening from the front, the engaging part engages with the engaged part and the reinforcing protrusion corresponds to the opposite side of the regulating part, so that the strainer member can be held in place and held. It is extremely convenient because the different functions of preventing expansion can be achieved at the same time in one operation, and since it is a close operation from the front, it is easy to attach the strainer member.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is a vertical sectional side view of the main part, FIG. 2 is a partially cutaway plan view taken from the line - in FIG. 1, and FIG. FIG. 4 is a cross-sectional plan view taken from a line, and FIG. 4 is an exploded perspective view of the main parts. In the figure, 1 is a washing tub, 2 and 2a are water discharge chambers and their openings, 17 is a drainage mechanism (water discharge mechanism), 1
8 is a water overflow mechanism (water discharge mechanism), 19 is a drainage strainer member, 22 is a water overflow strainer member, 23
25 is an engaging portion, 26 is a regulating portion, 26a is the opposite side, and 27 is an engaged portion.

Claims (1)

[Scope of utility model registration request] A water discharge chamber is integrally formed inside a plastic washing tub so as to extend vertically and bulge outward, and the water discharge chamber is attached to an opening facing into the tank so as to close the opening. In the device comprising a strainer member and a water discharge mechanism provided in the water discharge chamber for discharging water in the tank to the outside of the machine, an engaged portion is integrally formed on the opposite side edge of the opening. At the same time, a pair of restricting portions facing each other and extending in the front-rear direction are integrally formed, and the strainer member is brought into close proximity to the opening from the front to engage with the engaged portion. Engagement portions for attaching and holding the strainer member to the opening are integrally formed, each extending in the front-rear direction and engaging opposite sides of the pair of restriction portions when the strainer member is attached to prevent the opening from expanding. A washing machine characterized by integrally forming a pair of reinforcing protrusions.