JPH0691092A - Washing machine - Google Patents

Abstract

PURPOSE:To stop operation of a drain pump simultaneously with completion of a water injecting and rising operation automatically in a washing machine equipped with the drain pump for avoiding useless power consumption, and use parts or devices to other models commonly. CONSTITUTION:Current supply and current cut-off of a drain pump 11 are controlled by a washer timer 14, and for a first cam switch 26 there-for, that for controlling the current supply to and cut-off of a buzzer in other models can be used.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing machine with a drainage pump.

[0002]

2. Description of the Related Art Conventionally, a washing machine with a drainage pump has been provided. In this product, especially when performing "pouring rinsing (overflow rinsing)" in which rinsing is performed while continuing pouring water into the washing tub, by setting the operation knob for that to the "pouring rinsing" position,
The switch is activated to form the drain pump energizing circuit,
As a result, the drain pump is operated to discharge the water, which is successively overflowed from the overflow port of the washing tub, to the outside of the machine.

[0003]

However, in the above-mentioned one, even if the water rinsing operation is completed, if the operator forgets to return the operation knob for water rinsing from the "water rinsing" position, the drain pump operates. Then, there was a problem that power wasted wastefully.

The present invention has been made in view of the above circumstances, and therefore an object thereof is to be able to automatically stop the operation of the drainage pump at the end of the water rinsing operation, resulting in wasteful consumption of electric power. It is an object of the present invention to provide a washing machine that can be avoided and can achieve this by sharing the component device with other models.

[0005]

In order to achieve the above object, in the washing machine of the present invention, the contact piece on the power supply line side is shared, and the contact piece for connecting the washing motor and the contact piece for connecting the drainage pump. Is equipped with a washing timer having a cam switch which is driven by a common cam, and the washing motor and the drainage pump are turned on and off by the cam switch of the washing timer.

[0006]

According to the above means, the drainage pump is controlled by the washing timer together with the washing timer during the pouring and rinsing, and when the pouring and rinsing operation is completed,
At the same time as the washing timer is cut off, the drain pump is also cut off and stopped. In addition, the cam switch for that purpose can be used together with the washing motor and a buzzer that controls the on / off of the buzzer for notifying the end of washing operation or rinsing operation.
Only by selectively using the cam, after that, the cam switch and other various parts of the washing timer, or the mounting parts thereof can be shared.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. First, FIG. 2 shows an outer box 1 of a washing machine, particularly a two-tub type washing machine, in which a washing tub 2 and a dehydrating tub 3 are provided inside in a juxtaposed state. An agitator 4 is provided at the bottom of the washing tub 2, and a dehydration basket 5 is provided in the dehydration tub 3.

The drain port 6 formed at the bottom of the washing tub 2 is connected to the drain hose 8 through the drain valve 7, and the drain port 9 also formed at the bottom of the dehydration tub 3 is directly connected to the drain hose 8. Further, the overflow port 10 formed in the upper part of the washing tub 2 is directly connected to the drain hose 8. And
The drainage hose 8 is connected to a drainage pump 11, and a discharge pipe 12 from the drainage pump 11 has an upper portion 12a thereof protruding upward outside the machine.

On the other hand, FIG. 3 shows an operation panel 13 provided at the rear portion of the outer box 1, and has an operation knob 15 for the washing timer 14, an operation knob 16 for switching the water flow, and a dehydration timer on the upper surface. The operation knob 18 of 17 is arranged, and the water supply hose connection port 19 is further formed.

Further, an operating knob 20 for switching drainage, an operating knob 21 for switching rinsing, and an operating knob 22 for adjusting the water level are provided on the front part of the operation panel 13, one of which is for switching drainage. The drain valve 8 is opened by sliding the operation knob 20 to the "drain" position, and
The drain valve 8 is closed by sliding back to the "rinse" position.

Further, FIG. 1 shows an insertion plug 23, to which a bus bar 24 as a power source line and a bus bar 25 paired with the bus line 24 are connected. The bus bar 24 has the washing timer 14 connected thereto. The fixed contact piece a of the first cam switch 26 is connected.

Here, the washing timer 14 is a timer motor 27 and a first cam 28 shown in FIGS. 4 and 5 which is rotationally set by the operation knob 15 and rotationally driven by the timer motor 27, and a second cam (not shown). And the first cam switch 26 opened and closed by the first cam 28 and the second cam switch 29 opened and closed by the second cam.

Further, in detail, the first cam 28 is composed of two cam plates 30 and 31, and one cam plate 30 has a cam around the entire circumference except for the cam projection 30a. The other cam plate 31 fits the cam projection 31b of the entire circumference except the cam recess 31a to the projection 30b, and the cam projection 31a of one cam plate 30 fits the cam recess 31a of the other cam plate 31 to each other. There is.

On the other hand, the first cam switch 26 shares the fixed contact piece a, the movable contact piece b above the fixed contact piece a follows the cam plate 30 on one side, and the movable contact piece c on the other side is the other. It is made to follow the cam plate 31 of. Therefore, as shown in FIG. 4, the movable contact piece b falls into the cam recess 30b of the one cam plate 30 and contacts the fixed contact piece a (contact piece a-
b) is closed), the movable contact piece c moves to the other cam plate 31.
Is mounted on the cam convex portion 31b and comes into contact with the fixed contact piece a (closes between the contact pieces a and c) in the same manner.
As shown in FIG. 5, when the movable contact piece b rides on the cam convex portion 30a of the one cam plate 30 and separates from the fixed contact piece a (opens between the contact pieces a and b), the movable contact piece c becomes In the same manner, the fixed contact piece a is dropped into the cam concave portion 31a of the other cam plate 31.
Is separated from (opening between the contact pieces a and c). As a result, the first cam switch 26 is opened and closed as shown in FIG. In addition, in FIG.
The shaded portion represents the closure between the contact pieces, and the blank portion represents the opening between the contact pieces.

On the other hand, the second cam switch 29 which is opened and closed by the second cam gradually closes and closes the movable contact piece 1 with respect to the fixed contact pieces m and n. It is designed to repeat alternately for a short period of time.

Thus, the first cam switch 26
Moves the movable contact piece b through the drainage pump 11 to the bus bar 25.
, And the movable contact piece c is connected to the movable contact piece x of the water level switch 32.

Here, again, the water level switch 32 is provided with the movable contact piece x when the water level in the washing tub 2 is equal to or higher than a predetermined water level.
-The fixed contact piece z is closed, and when the water level is below a predetermined level, the movable contact piece x-fixed contact piece y is closed, and the water level closed between the movable contact piece x and the fixed contact piece z is The operation knob 22 for adjusting the water level is used to adjust the height to a plurality of stages.

The fixed contact piece z of this water level switch 32 is
Of the cam switch 29, the second cam switch 29 connects the fixed contact piece m to the forward rotation side connecting portion of the washing motor 33 that rotationally drives the stirring body 4 in the washing tub 2. Then, the fixed contact piece n is connected to the reverse rotation side connection portion of the motor 33, and is connected to the bus bar 25 via the washing motor 33.
Further, the timer motor 27 is connected in parallel with the connection circuit of the second cam switch 29 and the washing motor 33.

On the other hand, the fixed contact piece y of the water level switch 32 is
The water supplied from the water supply hose connection port 19 is washed by the washing tub 2
It is connected to the busbar 25 via a water supply valve (solenoid valve) 34 which is supplied into the inside of the water level switch 32, and the operation knob 21 for switching the rinse is inserted between the movable contact piece x and the fixed contact piece y of the water level switch 32. A water injection switch 35 that is closed when the slide operation is performed to the "rinse" position is connected in parallel.

In addition, between the buses 24 and 25,
The first cam switch 36 of the dehydration timer 17 and the lid switch 38 that responds to the opening and closing of the dehydration lid 37 above the dehydration tank 3.
Dewatering motor 3 for rotatably driving the dewatering basket 5 via
9 are connected. Further, in the dehydration timer 17, a drive source such as a mainspring (not shown) is set by the operation knob 18, so that the first cam switch 36 and the second cam switch 40 are opened and closed as shown in FIG. The second cam switch 40 is connected to the drainage pump 11. A drainage switch 41, which is closed when the drainage switching operation knob 20 is slid to the “drainage” position, is also connected to the drainage pump 11.

Next, the operation of the above structure will be described. First, when the washing timer 14 is set to the desired time (minute) position, as shown in FIG. 6, the first cam switch 26 of the washing timer 14 moves the contact pieces a-b and the contact pieces a-c together. Since it is closed, the drainage pump 11 is energized through the contact pieces a-b, and also through the contact pieces a-c and between the contact pieces xy that are closed when the water level switch 32 is under water. The water supply valve 34 is energized. Thus, when water is supplied into the washing tub 2 and thereby the inside of the washing tub 2 reaches the set water level, the water level switch 32 opens the above-mentioned contact pieces xy to make the contact piece x.
Since it is closed between -z, the contact piece 1-m of the washing timer 14
The washing motor 3 is alternately energized in the forward rotation direction and the reverse rotation direction via the second cam switch 29 that alternately closes the space and the contact pieces 1 to n. Thus, the washing operation is performed, and at this time, if the operation knob 21 for rinsing switching is slid to the "water rinsing" position to close the water pouring switch 35, the water supply valve 34 is set to the water level switch 32. Regardless of the state, electricity is continuously supplied through the water pouring switch 35, and therefore, the washing tub 2 is reached after reaching the set water level.
Since the water is continuously supplied to the inside, and eventually the water is overflowed from the overflow port 10, the drainage pump 11 discharges the water overflowed from the overflow port 10 to the outside of the machine through the discharge pipe 12.

When performing normal washing and rinsing, the drainage pump 11 serves to drain the water occasionally drained from the overflow port 10 due to the mortar shape of the water surface in the washing tub 2. .

When the washing timer 14 finishes its operation, the first cam switch 26 switches between the contact pieces a-b and between the contact pieces a-c both during the normal washing and rinsing and during the water-rinsing. Since both are opened, the drainage pump 11 is cut off and the washing motor 3 is cut off.

Therefore, in the case of this structure, when the operation is completed, the operation knob 21 for rinsing switching is "water-rinsed".
Even if the user forgets to return from the position, the drainage pump 11 does not continue to operate, and wasteful consumption of electric power can be avoided.

On the other hand, after the operation is completed, if the drainage switching operation knob 20 is slid to the "drainage" position to close the drainage switch 41, the drainage pump 11 is energized and operated. Therefore, the water discharged from the drain port 6 of the washing tub 2 through the drain valve 7 can be discharged to the outside of the machine.

Further, at the time of dehydration, by setting the dehydration timer 17 at a desired time (minute) position, the first cam switch 3 of the dehydration timer 17 is set as shown in FIG.
Since 6 is closed and the second cam switch 40 is closed, the dehydration motor 39 is energized and the drainage pump 11 is energized. Thus, at the time of dehydration, the water discharged from the drainage port 9 of the dehydration tank 3 can also be discharged outside the machine by the drainage pump 11.

In contrast to the above, FIG. 8 shows another model which does not include the drainage pump 11 and the water supply valve 34 but includes the buzzer 51 for notifying the end of the washing operation or the rinsing operation,
The movable contact b of the first cam switch 26 of the washing timer 14 is connected to the buzzer 51, and the movable contact c of the first cam switch 26 is connected to the movable contact l of the second cam switch 29. Directly connected.

Further, in this case, as shown in FIG. 9, the cam plate 5 is provided on the first cam 52 which replaces the first cam 28.
3 and 54 are used, and a cam recess 53a on a part of the entire circumference of the cam plate 53, a cam recess 54a on a part of the same circumference of the cam plate 54, and a cam on the entire remaining circumference of the cam plate 53. Similarly, the convex portion 53b and the cam plate 54 have a cam convex portion 5 on the entire remaining circumference.
4b and cam recess 53a (cam recess 54a), respectively.
It is offset by the entire length of Noho.

On the other hand, the first cam switch 26 shares the fixed contact piece a, the movable contact piece b follows the cam plate 53, and the movable contact piece c follows the cam plate 54. . Therefore, as shown in FIG.
When the movable contact piece c rides on the cam convex portion 53b of No. 3 and separates from the fixed contact piece a (opens the contact pieces a and b), the movable contact piece c rides on the cam convex portion 54b of the cam plate 54 and becomes the fixed contact piece a. It comes into contact (closes between the contact pieces a and c), and
As shown in FIG. 10, the movable contact piece b falls into the cam recess 53a of the cam plate 53 and contacts the fixed contact piece a (contact pieces a-b).
Even when the space is closed), the movable contact piece c rides on the cam convex portion 54b of the cam plate 54 and contacts the fixed contact piece a (contact piece a).
(C-c is closed), and as shown in FIG. 11, the movable contact piece b has a cam recess 53b.
When the movable contact piece c escapes from the fixed contact piece a (when the contact pieces a and b are opened), the movable contact piece c falls into the cam concave portion 54a of the cam plate 54 to come into contact with the fixed portion. It is configured to be separated from the piece a (open between the contact pieces a and b). As a result, the first cam switch 26 is opened and closed as shown in FIG.

That is, in this case, when the first cam switch 26 closes between the contact pieces a and b at the end of the washing operation, the buzzer 51 is energized to operate, thereby washing (washing and washing). Rinse) The end of the operation is notified.

Here, the above-mentioned model and the one of this configuration share the first cam switch 26, and only the first cams 28 and 52 are selectively used. A washing timer including a switch 26, a timer motor 27, a second cam switch 29, a second cam, a gear mechanism for decelerating and transmitting the power of the timer motor 27 to these cams, and a case for housing them. Since various parts for 14 or parts for mounting the parts can be shared, the structure can be rationalized and the parts can be provided at a lower cost.

In addition to the above, particularly in the above-mentioned construction, the water supply valve 34 is provided so that the washing timer 14 also controls the interruption of electricity of the water supply valve 34. It is not necessary to forget to stop the water supply to the inside, and it is possible to prevent the problem of abnormal flooding, which may cause water to overflow from the upper edge of the washing tub 2.

However, this is not always necessary, and therefore the water supply valve 34 may be omitted and water may be supplied directly from the water supply hose into the washing tub 2.

In addition, the present invention is not limited to the embodiments described above and shown in the drawings, and may be carried out by appropriately changing the presence or absence of a dehydrating function and the like without departing from the scope of the invention. .

[0035]

As is apparent from the above description, in the washing machine of the present invention, the water discharged from the drain of the washing tub and the water overflowing from the overflow are discharged to the outside of the machine by the drain pump. In the above, the joint on the power line side is shared,
The contact piece for connecting the washing motor and the contact piece for connecting the drainage pump include a washing timer having a cam switch which is moved by a common cam, and the washing motor and the drainage pump are turned on and off by the cam switch of the washing timer. By doing so, it is possible to automatically stop the operation of the drainage pump at the end of the water rinsing operation, avoiding wasteful consumption of electric power, and It is possible to achieve this by sharing the component device with other models, and it is possible to provide it at low cost, which is an excellent effect.

[Brief description of drawings]

FIG. 1 is an electric circuit diagram showing an embodiment of the present invention.

[Fig. 2] Front view of the entire fracture

FIG. 3 is an enlarged plan view of an operation panel portion.

FIG. 4 is a partially enlarged sectional view of a washing timer.

FIG. 5 is a partially enlarged sectional view of the same timer in different states.

[Fig. 6] Time chart of the laundry timer

FIG. 7: Time chart of dehydration timer

FIG. 8 is a diagram corresponding to FIG. 1 showing different models.

FIG. 9 is a view corresponding to FIG.

FIG. 10 is a view corresponding to FIG.

FIG. 11 is a view corresponding to FIG.

FIG. 12 is a view corresponding to FIG.

[Explanation of reference numerals] 2 is a washing tub, 6 is a drain port, 10 is an overflow port, 11 is a drain pump, 14 is a washing timer, 24 is a bus bar (power line), 26 is a first cam switch, and 28 is a first The cam of
33 is a washing motor, a is a fixed contact piece, and b and c are movable contact pieces.

Claims (1)

[Claims] 1. A washing motor in which water discharged from a drainage port of a washing tub and water overflowing from an overflowing port are discharged to the outside of a machine by a drainage pump, and a contact piece on the power line side is shared. A washing machine having a washing machine having a cam switch for connecting and disconnecting the washing motor and the drainage pump, which are moved by a common cam. .