JPS59115095A - Drain apparatus of washer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION This invention relates to a drainage system for a washing machine of the type used in general households.

Conventional configuration and its problems FIG. 1 is an overall diagram of the basic configuration of a conventional washing machine.

In the figure, 1 is the outer frame of the washing machine, 2 is the upper body,
It covers the upper opening of the outer frame 1. 3 is a panel on which electrical components are attached to control the mechanical movement of the washing machine. The lid 4 is arranged in the center of the upper body 2 so as to be openable and closable.

Reference numeral 5 denotes a water receiver serving as an outer tank of the washing tank, and has a substantially cylindrical shape to receive washing water. 6 is a dehydration tank/washing tank; 7 is a dehydration hole provided on the cylindrical outer circumferential surface of the dehydration tank/washing tank 6.

8 is a stirring blade, which stirs the laundry. The stirring blade 8 is provided at the center bottom of the dehydration tank and irrigation tank 6.

9 is a motor, motor pulley 10 and V-belt 1
1, the rotation is transmitted to a mechanical case 12 with a built-in clutch mechanism, which rotates the stirring blade 8 during washing, and the spin-drying tub/washing tub 6 during spin-drying. Motor 9 and mechanical case 12
is attached to the reinforcing plate 13. Further, these entire mechanical sections are suspended by a vibration isolator 14. - Spherical receivers 15 are provided at the four corners of the reinforcing plate 13, and the spherical receivers 15
A vibration isolator 14 is slidably attached to the upper part of the outer frame 1 via a rod 16. Reference numeral 17 denotes adjustment legs provided at the four corners of the bottom of the outer frame 1, which are used to adjust so that there is no wobbling when the frame is installed on the floor.

The adjustment legs 17 are usually provided at one or two locations. 18 is a fixed leg. Reference numeral 19 denotes a drain cock frame, which is provided with a drain valve therein, and is opened to drain the washing water in the water receiver 5 to the outside of the machine. At this time, a drain hose 20 is used to connect the drain cock frame 19 to the outside of the machine. 21 is a balancer ring, which has a liquid sealed inside, and also functions as a dehydration tank A [41i6] When the dehydrated material is unevenly distributed, the liquid moves to balance it depending on the unevenness. . Reference numeral 22 denotes a dewatering tray cover that reinforces the upper opening of the water tray 5. 23
is an air trap chamber, which is connected to a pressure switch 25 by an air hose 24, and the joint portion of the air hose 24 is treated to prevent air leakage. Therefore, when washing water is supplied to the water receiver 5, the air in the air trap chamber 23 is compressed, and when the water level reaches a certain level, the pressure switch 25 is activated to stop the water supply. The pressure switch 25 is normally attached to the panel 3 and has a built-in diaphragm made of rubber to sense pressure changes.

In such a conventional washing machine, as shown in FIGS. 2 and 3, an optical sensor 26 is attached to the tubular drain port 27,
A sensor-type washing machine that detects dirt in washing water was provided. Figure 2 shows the light sensor! 7-26 is shown. Bottom area 13 of water receiver 5 and drain port 27
A drain cock frame 19 having a guide pipe 28 and a guide pipe 28 connected to a tubular drain port 27 is disposed. A light sensor 2 is attached to this guide pipe 28 as shown in Figure 3.
6 is attached, and a light emitting element (LED) 29 and a light receiving element (phototransistor) 30 are incorporated into the optical sensor 26. ? The washing water flows from the water tray 5 through the tubular drain port 27 and the guide pipe 28. The washing water reaches a drain valve 31 built in the drain cock frame 19, and the degree of dirt in this washing water is detected by transmitting light from an optical sensor 26, receiving the amount of light, and converting it into voltage.

The drain cock frame 19 is fixed to the bottom of the water receiver 5. A drain valve 31 made of an elastic material such as synthetic rubber is arranged inside the drain cock frame 19, and the valve seat 32 is always held by a cock spring 33. Press against it to prevent washing water from leaking. When the washing water is to be drained, the electromagnetic solenoid 34 is energized to attract the suction part 35, thereby causing the second clot 36 connected to the suction part. 1st crotch 37
is moved in the A direction by the second Kotoku spring 38. At this time, the drain valve 31 is opened in the A direction via a spring guide 39 attached to the drain valve 31 to drain the washing water. The drain valve 31 is generally made of rubber, and the bellows part 40 is integrally molded to satisfy flexibility.

The drain valve 31 is attached to the drain cock frame 19 with a cock lid 41 providing sealing properties.

However, in the conventional configuration, the light emitting and light receiving elements 29 and 30 of the optical sensor 26 were simply arranged on the outer periphery of the guide 74128 of the tubular drain 27, so that the tubular drain 27 was simply disposed on the outer periphery of the guide 74128 of the tubular drain 27. Dirt on the inner wall of the guide pipe 28 becomes a problem, and detergent residue and scale due to water quality adhere, resulting in the fact that even the light from the light emitting element 29 is blocked by this dirt, and the light is transmitted to the light receiving element 30 side. It was impossible to detect dirt in normal washwater.Objective of the InventionThe present invention automatically cleans the inside of a guide pipe for draining water, and always accurately detects drainage dirt using an optical sensor. An object of the present invention is to provide a drainage device for a washing machine.

Structure of the Invention The drainage device for a washing machine of the present invention includes an optical sensor provided at the outlet of the guide pipe, and a sliding part integrally formed in the center of the drain valve that closes the outlet of the guide pipe via a telescoping part. The sliding portion moves into a portion of the guide pipe corresponding to the optical sensor due to inertia caused by the impact when the drain valve is closed, and cleans this portion. Therefore, drainage stains can always be accurately detected by the optical sensor. In addition, an impact weight is provided in the opening/closing slot for opening and closing the drain valve to prevent the intrusion 11i1J from occurring due to the inertia of the sliding portion. Furthermore, a ball is provided in the ball hole of the trowel, which is removably engaged with a recess provided in the impact weight. Therefore, by dehydration vibration? This prevents the I #J portion and the impact weight from inadvertently entering the guide pipe and blocking the light from the optical sensor, thereby further preventing malfunctions.

DESCRIPTION OF THE EMBODIMENTS One embodiment of the present invention is shown in FIGS. 4 to 7. Fourth
In the figure, a drain valve 31' housed in a drain cock frame 19 is partially fitted and held by a flange portion protruding from the outer periphery of the cylindrical portion of a first socket 37'. A flexible portion 42 is provided at the substantially cylindrical center of the drain valve 31'.
A slider 3 portion 43 having a diameter is integrally provided with the drain valve 31'. Usually, it is housed at the tip of the drain valve 31'.

□ 43 (7) or 1゜62.7 pcs +) 79” □ 4,3゜741 □ Form by one time molding, and always set by hooking the pulp spring 45 to this spring guide 39'. A step is provided inside the first lock 3de, and a spring guide 39a is arranged to hook the second lock spring 38 so that the second lock spring 38 can be set on the step. The other end of the second lock spring 38 is connected to the second lock spring 36.The second lock spring 38 is set so as to always apply a tensile force.
A pulp spring 45 is also set in the spring guide 39b so as to apply a tensile force. Here, it is assumed that the pulp spring 45 has a smaller spring constant. Also, the first lock 37' is pressed by the first lock spring 33, and the drain valve 31 is pressed against the valve seat surface 32.
' to prevent washing water from leaking. The first spring 33 is set at the cock lid 41, and the other end of the drain valve 31' is also pressed here between the drain cock frame 19 and the cock lid 41 to provide a seal. The optical sensor 26 is arranged in the direction in which the sliding portion 43 moves, and has light emitting and light receiving elements 29 and 30 provided on the guide pipe 28, respectively, centered on the X-x axis in the drawing.

In order to increase the inertia of the sliding portion 43, an impact weight 47 is fixed to the sliding portion 43 by adhesive or the like. A concave groove 49 in which a spherical ball 48 is mounted is provided on the outer periphery of the impact weight 47,
The impact weight 47 is configured to be housed within the cylindrical shape of the first lock 37' and is slidably movable therein. A ball hole 49' into which a ball 48 can be attached is provided in a part of the cylindrical portion of the first socket 37' facing the concave groove 49 of the impact weight 47, and this first socket 37'
A slider guide 50 that surrounds the outer periphery of the cock lid 41 and serves as a sliding guide is fixed to the inner surface of the cock lid 41. Furthermore,
A ball guide 51 is set to surround the outer periphery of the slider guide 50 and prevent the ball 48 from falling off. The flange portion of the first lock 37' is connected to the first lock spring 3.
3 to set the drain valve 31' on the valve seat surface 32.

Although FIG. 4 shows the drain valve 31' in a closed state, FIG. 5 shows the drain valve 31' in the closed state.
Fig. 2) shows the state in which the drain valve 31 is opened.
' is moved from the valve seat surface 32 by a distance C in the A direction. This action drains the washing water and causes it to be washed away. When the drain valve 31' is moved in direction A, it is the time to perform the draining and spin-drying process. During the spin-drying process, if the laundry in the spin-drying tub/washing tub 6 is spun to one side, the entire mechanism section will be damaged. causes violent lateral shaking, and this lateral shaking vibration is also transmitted to the impact weight 47 and generates vibration acceleration. This results in extremely large vibrations, so it is necessary to use some force to hold the impact weight 47 during dewatering. In order to perform this holding, the impact weight 47 and the sliding portion 43 are engaged, and the concave groove 49 of the impact weight 47 and the first slot 37 are engaged with each other.
A ball 48 is set in a ball hole 49', and the upper end of the ball 48 is held down by a slider guide 50. FIG. 5 shows a state in which the impact weight 47 is pressed down and held by the ball 48.

FIG. 6 shows the movement of the sliding portion 43 immediately after the draining process and the dewatering process are completed. Electromagnetic solenoid 34
When the drain valve 31' is turned off, the drain valve 31' rapidly moves toward the valve seat surface 32 (direction B) by the force of the first spring 33, and the valve seat surface 32 collides with the tip of the drain valve 31'. do. At this time,
Since the sliding portion 43 has the bending portion 42, the inertia force in the B direction generated due to this collision causes the valve seat surface 3 to
Move by dimension E, which is the direction of 2 machining B. This displacement #H affects the shape of the flexible portion 42 and the mass of the sliding portion, but tends to be proportional to the dimension C. Therefore, since the sliding part 43 moves by the dimension E, the light emitting element 29 of the optical sensor 26 and the light receiving element 29 are located in the dimensioned part near the valve seat surface 32.
．． 30 should be installed. In order to assist the movement of the sliding portion 43 having the dimension E, an impact weight 47 is provided, and this impact weight 47 must be able to slide freely when an inertial force is applied. Therefore, as shown in FIG. 6, the slider guide 5
When the upper end of the ball 48 comes off from zero, the ball 48 becomes free to move, and the impact weight 47 gives qits*ai+c.
-gHsii'' to 141rfbx'>.

I have to. Therefore, there is no resistance to the sliding of the impact weight 47. Further, although the ball 48 escapes upward, since the ball guide 51 is provided, the ball 48 does not fall out of the ball hole 49'.

In this way, the sliding portion 43 and the impact weight 47 are held in motion when the electromagnetic solenoid 34 is on, and can freely slide when the electromagnetic solenoid 34 is off. When the sliding part 43 moves by the dimension E, the valve spring 45 is pulled in the direction B, and when the inertia force disappears again, the sliding part 43 is pulled back to its original position.

In this way, when draining washing water,
In the operation of turning on the 7H magnetic solenoid 34 to open the drain valve 31' and then closing the drain valve 31' at the end of draining, etc., the law of motion is used to determine the J? an't
When the Jj section 43 jumps forward due to inertia, the optical sensor 2
Light emission from the guide pipe 28 attached to No. 6, light receiving element 2
Since the dirt on the inner wall, which corresponds to 9.30, is rubbed off by the sliding part 43, only authorized manufacturers can transmit the amount of light from the light emitting element 29 to the light receiving element 30. can. FIG. 7 is a graph in which the amount of light transmitted when dirty is replaced with the output voltage. If there is no dirt, the output voltage will be a constant value V. However, if dirt adheres to the inner wall of the guide pipe 28, the output voltage also decreases. In terms of performance, the deterioration of light detection is prevented by removing dirt as described above, but all of this is done naturally when the drain valve 31' is opened and closed.

The ball 48 causes the pop-out phenomenon to occur due to the generation of vibration acceleration of the impact weight 47 due to dehydration vibration. That is, the balls 48 press and hold each of them to generate a holding force sufficient to overcome the vibration acceleration. !
Furthermore, since this holding force is removed when the drain valve is turned off, it is possible to reliably apply inertia force to the impact weight 47 as well. A light sensor that detects dehydration when there is a popping phenomenon? The sliding portion 43 blocks the light emitting light of 26 and the space between the light receiving elements 29 and 30 together with the vibration, making it impossible to detect an appropriate pressure.

However, according to the present invention, a sensor function can be reliably obtained, and a highly reliable product can be provided without being affected by dehydration vibration.

Effects of the Invention The drainage device of the 1tlfff machine of the present invention automatically cleans the inside of the guide pipe for draining water, and can always accurately detect drainage dirt using an optical sensor. In addition, the provision of an impact weight ensures that the cleaning operation due to the valve closing impact can be performed reliably, and the provision of a ball to lock the impact weight prevents the impact weight from moving inadvertently due to dehydration vibration and blocking the light from the optical sensor. This has the effect of preventing this from occurring, and providing even more reliable operation.

[Brief explanation of drawings]

Fig. 1 is a sectional configuration diagram showing a conventional vacuum cleaner, Fig. 2 is a partially enlarged sectional view thereof, Fig. 3 is a sectional view taken along the line ■-■, and Fig. 4 is a partial sectional view of an embodiment of the present invention. Figures 5 and 6
The figure is an explanatory diagram of the operation, and FIG. 7 is a graph showing the relationship between dirt and transmission 1d, which also shows the characteristics of the optical sensor. 5...Water receiver (picture tank), 26...Light sensor, 27.
...Tubular drainage port, 28...Guide pipe, 31'...
・Drain valve, 32... Valve seat surface, 33... Cock spring,
34... Electromagnetic solenoid, 37'... 1st Kotsukuro 7F, 42... Deflection part (extensible part), 43... Sliding part, 45.../<Lube spring, 47... Impact weight, 48...Hζ-ru, 49...concave? Jfi, 4
9'...Ball hole, 50...Slider guide, 5
1... Ball guide agent Patent attorney Akio Miyai Inuden Figure 1 f52 Figure 3N

Claims (2)

[Claims] (1) A washing tub having an agitating means, a guide pipe connected to the drain of the washing tub and having a translucent part near the outlet, and a guide pipe arranged facing each other across the translucent part of the guide pipe. an optical sensor that has a light-emitting element and a light-receiving element and detects water contamination in the guide pipe; A drain valve to be covered, a cap having a flange on the outer periphery of the tip and a peripheral edge of the drain valve attached to the flange, an opening/closing drive device for opening and closing the drain valve via the cap, and a curved central portion of the drain valve. When the drain valve is closed, the drain valve is pushed into the transparent part of the guide pipe by the inertial force caused by the impact when it hits the valve seat surface, and the transparent part is pushed into the transparent part of the guide pipe. 1 yen to clean the sex part! ! an impact weight having a ball-engaging recess on its outer circumferential surface and slidably fitted into the socket to increase the inertia of the sliding part; and a ball hole provided in the peripheral wall of the socket. A laundry machine comprising: a ball that is held and detachably engages with the recess of the impact weight when the impact weight is in a retracted state; and a pulp spring that is provided in the cot-clot and pulls in and biases the sliding part. Machine drainage system. (2) a slider guide that is fixedly installed and slidably fits on the outer circumference of the cot-clot and presses down the pole when the cot-clot is retracted; and a slider guide that is formed to have a larger diameter than the slider guide and is loosely fitted around the outer circumference of the cot-clot. The drainage device for a washing machine according to claim 1, further comprising a ball guide that holds the pole in a state where the ball is removed from the slider guide.