JPH07213786A - Washing machine - Google Patents

Abstract

PURPOSE:To provide a washing machine capable of switching streams and opening or closing a drain valve with a stream switching knob and having a simple structure. CONSTITUTION:A connecting lever 23 is moved only by the rotation of a long hole 22 via the rotation of a stream switching knob. When the stream switching knob is rotated within a prescribed range, the connecting lever 23 is moved, and a timer lever 19 changes the on/off ratio of the second timer switch. When the stream switching knob is rotated to the outside of the prescribed range, a drain valve is opened and the timer lever 19 is kept at nearly the stationary state against the rotation of the long hole 22. The on/off ratio of the second timer switch can be changed and the drain valve can be opened or closed by the stream switching knob when the stream is switched.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a washing machine.

[0002]

2. Description of the Related Art The construction of a main part of a conventional washing machine disclosed in Japanese Utility Model Laid-Open No. 4-130774 will be described with reference to FIGS. Reference numeral 100 is a timer for setting the operating time of the drive motor for driving the stirring body in the washing tub. The timer 100 is connected in series to the drive motor and is turned on during the operation time, and a first timer switch is connected in series to the first timer switch and the drive motor and is repeatedly turned on and off during the operation time. A second timer switch is incorporated (both switches are not shown). 10
Reference numeral 1 denotes a timer lever that is movably or rotatably provided on the timer 100 and that changes the ON / OFF ratio of the second timer switch in accordance with the rotation, and 102 extends in the radial direction of the rotary shaft 103 of the water flow switching knob. The installed first extension body,
Reference numeral 104 denotes an elongated hole formed in the first extension body 102 in an arc shape around the rotary shaft 103. Reference numeral 105 denotes the elongated hole 104 so that a protrusion provided at one end can freely move in the elongated hole 104. It is a connecting lever that is inserted into the inside and has the other end rotatably attached to the timer lever 101 and connects the timer lever 101 and the first extension body 102. At one end of the connecting lever 105, the protrusion has an elongated hole 10.
4 is inserted into the first extension body 102 and does not come off undesirably. Further, the other end of the connecting lever 105 does not undesirably come off from the timer lever 101. Reference numeral 106 denotes a second extension body extending in the radial direction of the rotating shaft 103 and connected to a drain valve (not shown) of the washing tub via a flexible connecting line 107, and 108 denotes the connecting lever 1
This is a spring that pulls 05 to the left.

When the water flow switching knob is rotated within a predetermined range to switch the water flow, the connecting lever 105 moves in the left-right direction to reach the position shown in FIG. 11 or 12. Specifically, when the water flow switching knob is rotated in the most counterclockwise direction within a predetermined range, the elongated hole 104 moves upward as shown in FIG. 11, and the connecting lever 105 has a protrusion at the left end of the elongated hole 104. The spring 108 is pulled by the spring 108 and moves leftward while maintaining the contact state. On the other hand, when the water flow switching knob is rotated most clockwise in the predetermined range, as shown in FIG.
4 moves to the right, and the connecting lever 105 moves to the left against the force of the spring 108 while maintaining the state in which the protrusion contacts the left end of the elongated hole 104.

When the connecting lever 105 moves left and right in this way, the timer lever 101 is moved to the position shown in FIGS.
As described above, the counterclockwise and clockwise rotations change the ON / OFF ratio of the second timer switch. Therefore, the timer 100
While the first timer switch is turned on during the washing time and the rinsing time which are the operation time set in step 2, the second timer switch is turned on and off based on the changed ratio as described above. Accordingly, the drive motor is drive-controlled based on the ratio during the operation time, and the stirring body performs intermittent rotation according to the ratio during the operation time so as to generate a desired water flow.

Next, when the washing / rinsing is completed and the water is drained from the washing tub, the water flow switching knob is further rotated counterclockwise beyond the predetermined range, that is, beyond the predetermined range.
In this case, as shown in FIG. 13, the second extension body 106 moves to the right, the connection line 107 is stretched, the drain valve is pulled through the connection line 107, the drain valve is opened, and drainage is performed. . When the water flow switching knob is moved within a predetermined range, the second extension body 106 is only located on the lower side or the diagonally lower left side. In this case, the connecting line 107 is not stretched and the drain valve is not opened. .

Then, in the situation where the water flow switching knob is further rotated counterclockwise beyond the predetermined range as described above, the timer lever 101 and the connecting lever 105.
Is stationary. That is, the elongated hole 104 is further rotated counterclockwise with the rotation of the water flow switching knob (the first extension body 102) so that the timer lever 101 and the connection lever 105 can be stationary. Even so, it has an arcuate shape with an appropriate length so that it does not undesirably hit the projection and affect the projection.

[0007]

In the washing machine having the above-described structure, the one water flow switching knob can change the on / off ratio of the second timer switch to switch the water flow. Since the drain valve can be opened and closed, it is not necessary to provide a drain valve knob in addition to the water flow switching knob, and the structure is simplified.

However, when the water flow switching knob is rotated beyond a predetermined range during drainage, the connecting lever 105
As described above, the elongated hole 104 is required in order to avoid the protrusion. By providing the elongated hole 104 in this manner, when the water flow switching knob is rotated within a predetermined range when switching the water flow, the connecting lever is connected via the protrusion to change the ON / OFF ratio of the second timer switch. The spring 108 is provided so that the 105 and the timer lever 101 can move following each other. Without this spring 108, even if the oblong hole 104 moves with respect to the rotation of the water flow switching knob within a predetermined range, the protrusion is simply located in the oblong hole 104 (in the oblong hole 104 of the protrusion). However, the on / off ratio of the second timer switch cannot be changed. Since the spring 108 is separately required, the structure of the washing machine is complicated in this respect.

According to the present invention, it is possible to change the on / off ratio of the second timer switch when switching the water flow and to open / close the drain valve with only one water flow switching knob without adding a component such as a spring. It is an object of the present invention to provide a washing machine which has a simple structure and which can reduce the number of assembling steps and the cost.

[0010]

The present invention provides a drive motor for driving an agitator in a washing tub, a timer for setting an operating time of the drive motor, a timer built in the timer, and the drive motor. A first timer switch that is connected in series and that is turned on during the operating time; and a timer that is built in the timer and that is connected in series to the first timer switch and the drive motor and that is repeatedly turned on and off during the operating time. Two timer switches, a timer lever that is movably provided on the timer and that changes the ON / OFF ratio of the second timer switch according to the movement, a water flow switching knob, and a radial direction of the rotating shaft of the water flow switching knob. The elongated first hole, the elongated hole formed in the first elongated member, and the protrusion provided at one end of the elongated hole so that the protrusion can freely move in the elongated hole. And the other end is rotatably attached to the timer lever and extends in the radial direction of the rotating shaft and a connecting lever that connects the timer lever and the first extension body. A second extension connected to the drain valve of the tank, wherein the connecting lever is moved only by the rotation of the elongated hole by the rotation of the water flow switching knob, and the water flow switching knob has a predetermined range. When rotated inside, the connection lever moves, the timer lever moves so as to change the on / off ratio of the second timer switch, and the water flow switching knob is rotated outside the predetermined range. In the washing machine in which the drain valve is opened, when the water flow switching knob is rotated out of the predetermined range, the timer lever remains substantially stationary with respect to the rotation of the elongated hole. As to, it is obtained by forming the long hole. Further, the longitudinal direction of the elongated hole is configured to substantially coincide with the radial direction of the rotating shaft.

[0011]

When the water flow is switched, the water flow switching knob is rotated within a predetermined range. Then, the elongated hole formed in the first extension body of the rotation shaft of the water flow switching knob follows and rotates, and the connecting lever and the timer lever move to change the on / off ratio of the second timer switch. As a result, the drive motor is drive-controlled based on the above ratio during the operating time such as washing and rinsing, and the stirring body performs intermittent rotation according to the above ratio during the operating time so as to generate a desired water flow.

When the washing / rinsing is completed and the water is drained from the washing tub, the water flow switching knob is further rotated outside the predetermined range, that is, beyond the predetermined range. Then, the second extension body of the rotary shaft rotates to open the drain valve, and drainage is performed. At the same time, the elongated hole also rotates, but with respect to the rotation of the elongated hole at this time, the connection lever moves but the timer lever remains almost stationary, and the water flow switching operation is performed undesirably. Absent.

[0013]

EXAMPLE A two-tub type washing machine according to an example of the present invention is shown in FIGS.
It will be described based on. FIG. 1 shows the appearance of the washing machine. 1
Is a main body of a washing machine having a washing tub and a dehydrating tub (both not shown), and 2 is disposed on the upper part of the washing machine main body 1,
A washing lid for opening and closing the upper opening of the washing tub, 3 is disposed on the upper portion of the washing machine main body 1, and a dehydrating lid for opening and closing the upper opening of the dewatering tub, 4 is a drain hose, 5 is the washing machine main body 1
It is a control panel made of synthetic resin provided on the rear side of the upper part of.

In the control panel 5, 6 is a washing timer knob, 7 is a water flow switching knob, 8 is a dehydration timer knob, and 9 is a water supply hose (not shown) connected to a water faucet outside the washing machine body 1 which is detachable. The water supply port 10 to be coupled is a water supply switching knob which is operated to selectively guide the tap water supplied to the water supply port 9 through the water supply hose to the washing tub or the dehydration tub.

FIG. 2 shows a circuit of the above washing machine. Reference numeral 11 is a washing drive motor for driving the agitator in the washing tub, and 12 is a washing timer operated by the washing timer knob 6 for setting an operating time of the washing drive motor 11 which is a washing / rinsing time. A first timer switch 13 connected in series to the washing drive motor 11 and turned on for the above operating time, and the first timer switch 1 are connected to the washing timer 12.
3 and the washing drive motor 11 are connected in series, and the second timer switch 14 is repeatedly turned on and off during the above operation time.
And are built in. In this case, the movable contact c is alternately turned on to the contacts a and b at every turn-on timing. Reference numeral 15 is a dehydration drive motor for rotating the dehydration tank, 16 is a dehydration timer for operating the dehydration timer knob 8 to set a dehydration time, and the dehydration timer 16 is connected in series to the dehydration drive motor 15. A dehydration timer switch 17 that is turned on during the dehydration time is built in.

FIG. 3 shows the above-mentioned second state at the time of washing and rinsing.
The operation state of the timer switch 14 is shown. The first timer switch 13 is turned on during the operation time set by the washing timer 12, but during this time, when the standard water flow is set to be switched by the water flow switching knob 7, the second timer switch 14 is activated as shown in FIG. Repeated on and off as in a). That is, the movable contact c is alternately turned on to the contacts a and b for 13 seconds with an off period of 2 seconds interposed therebetween. On the other hand, when the soft water flow is switched and set by the water flow switching knob 7, the second timer switch 14 is repeatedly turned on and off as shown in FIG. 3B. That is, with a 12 second off period in between,
The movable contact c is alternately turned on to the contacts a and b for 4 seconds each.

As described above, the second timer switch 14 is operated based on the water flow switching setting of the water flow switching knob 7.
ON / OFF ratio changes, the washing drive motor 11 is drive-controlled based on the ratio during the operation time, and the agitator performs intermittent reversal drive according to the ratio to generate a desired water flow. Do for a while. That is, the standard water flow is generated under the ratio corresponding to FIG. 3 (a), and the soft water flow is generated under the ratio corresponding to FIG. 3 (b).

4 to 6 show the structure of the main part in the vicinity of the washing timer 12. Reference numeral 18 denotes a rotary shaft of the washing timer 12 having the washing timer knob 6 mounted thereon, and 19 denotes the washing timer 12
A timer lever 20 is provided movably or rotatably for changing the ON / OFF ratio of the second timer switch 14 according to the rotation, and 20 is extended in the radial direction of the rotary shaft 21 of the water flow switching knob 7. The first extension body 22 is an elongated hole formed in the first extension body 20, and the longitudinal direction of the elongated hole 22 substantially coincides with the radial direction of the rotary shaft 21. Reference numeral 23 denotes a protrusion 24 provided at one end, which is inserted into the elongated hole 22 so as to be freely movable in the elongated hole 22, and has the other end rotatably attached to the timer lever 19, It is a connecting lever that connects the lever 19 and the first extension body 20.

In this case, the notch 25 is connected to the elongated hole 22, while the projection 24 has a T-shaped structure at the tip (on the front side in the drawing) so as to match both the elongated hole 22 and the notch 25. ing. Then, the connecting lever 23 is brought to the position shown by the solid line as shown in FIG. 7, and the T-shaped structure of the projection 24 is passed through the elongated hole 22 and the notch 25. By moving, the connecting lever 2
One end of 3 does not undesirably come off from the first extension body 20 in a state where the protrusion 24 is inserted into the elongated hole 22. That is, the T-shaped structure serves as a stopper. Further, the other end of the connecting lever 23 is also structured so as not to be undesirably separated from the timer lever 19.

Reference numeral 26 denotes a second extension body extending in the radial direction of the rotary shaft 21 and connected to a drain valve (not shown) of the washing tub via a flexible connecting wire 27, and 28 denotes the second extension body. It is a cylindrical rib integrally formed on the first extension body 20 for supporting the connecting line 27.

Now, in such a structure, when the water flow switching knob 7 is rotated within a predetermined range in order to perform the water flow switching, the connecting lever 23 moves in the left and right direction and either one of FIGS. To the position. Specifically, when the water flow switching knob 7 is rotated most clockwise in a predetermined range, the slot 22 moves to the right and the connecting lever 23 follows the slot 22, as shown in FIG. Move to the right. On the other hand, when the water flow switching knob 7 is rotated in the most counterclockwise direction within the predetermined range, the slot 22 moves upward and the connecting lever 23 moves the slot 22 as shown in FIG.
Follow to and move to the left.

When the connecting lever 23 moves left and right in this manner, the timer lever 19 rotates clockwise and counterclockwise as shown in FIGS. 4 and 5, and the cam (not shown) in the washing timer 12 is turned off. Instead, the second timer switch 14
The on / off ratio of changes. The timer lever 19 is shown in FIG.
In the rotated state as shown in FIG. 5, each of FIG.
As shown in (b), the second timer switch 14 is turned on and off, and the standard water flow and the soft water flow are generated during the operating time which is the washing / operating time set by the washing timer 12.

Next, when the washing / rinsing is completed and the water is drained from the washing tub, the water flow switching knob 7 is further rotated clockwise beyond the predetermined range, that is, beyond the predetermined range.
In this case, as shown in FIG. 6, the second extension body 26 moves to the left, the connecting line 27 is stretched, the drain valve is pulled through the connecting line 27, the drain valve is opened, and drainage is performed. . At this time, the connecting line 27 is in a state of being pulled by the cylindrical rib 28, the stroke of the drain valve is large, and the drain valve is surely opened. Further, the action of the cylindrical rib 28 prevents the connection line 27 from undesirably hitting the connection lever 23. The second extension 26 is only located on the lower side or diagonally lower right when the water flow switching knob 7 is moved within a predetermined range. In this case, even if the connecting line 27 is stretched, the drainage is drained. It does not reach the point of opening the valve.

In the situation where the water flow switching knob 7 is rotated clockwise beyond the predetermined range as described above, the timer lever 19 is in a stationary state. That is, even if the elongated hole 22 further rotates clockwise in accordance with the rotation of the water flow switching knob 7 (the first extension body 20), the protrusion 24 only moves inside the elongated hole 22. In other words,
The connecting lever 23 simply rotates with respect to the timer lever 19. Even when the water flow switching knob 7 is returned to within the predetermined range, the timer lever 1 is also operated.
9 is stationary. Further, the timer lever 19 itself is also regulated so as to maintain a stationary state.

As can be seen from the above description, the connecting lever 2 is accompanied by the rotation of the water flow switching knob 7 within a predetermined range.
The horizontal movement of 3 is performed only by the rotation of the slot 22 by the rotation of the water flow switching knob 7. Even if the water flow switching knob 7 is rotated outside the predetermined range due to the structure in which the longitudinal direction of the slot 22 substantially coincides with the radial direction of the rotary shaft 21, the slot 22 rotates. On the other hand, the timer lever 19 remains almost stationary.

8 to 10 show another embodiment of the rotary shaft 21. A part of the rotary shaft 21 has an irregular pentagonal cross section, and a leaf spring 29 is provided corresponding to the irregular pentagonal portion. As a result, when the water flow switching knob 7 is switched to obtain the standard water flow and the soft water flow, the rotary shaft 21 is restricted to the positions shown in FIGS. 8 and 9, and when the water flow switching knob 7 is switched to drain. The rotary shaft 21 is restricted to the position shown in FIG. Therefore, when the water flow switching knob 7 is switched as described above, the water flow switching knob 7 is prevented from undesirably rotating.

[0027]

According to the present invention, the connection lever can be moved only by the rotation of the elongated hole of the first extension body of this knob by the rotation of the water flow switching knob, and the water flow switching knob is set to a predetermined value. When the connection lever is rotated within the range, the timer lever is moved so as to change the ON / OFF ratio of the second timer switch, and the water flow switching knob is rotated outside the predetermined range. In a washing machine in which the drain valve is opened, when the water flow switching knob is rotated outside the predetermined range, the timer lever is kept substantially stationary with respect to the rotation of the elongated hole. Is configured. Therefore, without adding a spring as in the conventional case, it is possible to change the ON / OFF ratio of the second timer switch when switching the water flow and to open / close the drain valve with one water flow switching knob. It is possible to provide a washing machine which is extremely simple and which can reduce the number of assembling steps and the cost.

[Brief description of drawings]

FIG. 1 is an external perspective view of a two-tub washing machine according to an embodiment of the present invention.

FIG. 2 is a circuit diagram of the washing machine.

FIG. 3 is a timing diagram showing an operating state of a second timer switch of the washing machine.

FIG. 4 is a plan view of an essential part near a washing timer when the standard water flow is set in the washing machine.

FIG. 5 is a plan view of the main part near the washing timer when the soft water flow is set in the washing machine.

FIG. 6 is a plan view of an essential part near a washing timer when a drainage operation of the washing machine is performed.

FIG. 7 is a main part plan view showing how to install the connecting lever of the washing machine.

FIG. 8 is a cross-sectional view of essential parts near a rotating shaft when a standard water flow is set in a two-tub washing machine according to another embodiment of the present invention.

FIG. 9 is a cross-sectional view of essential parts near a rotation shaft when a soft water flow is set in the washing machine.

FIG. 10 is a cross-sectional view of essential parts near the rotary shaft during a draining operation in the washing machine.

FIG. 11 is a plan view of a main part around a timer when setting a desired water flow in a conventional washing machine.

FIG. 12 is a plan view of relevant parts near a timer when another desired water flow is set in the washing machine.

FIG. 13 is a plan view of relevant parts near a timer when draining the washing machine.

[Explanation of symbols]

 7 Water Flow Switching Knob 11 Washing Drive Motor 12 Washing Timer 13 First Timer Switch 14 Second Timer Switch 19 Timer Lever 20 First Extended Body 21 Rotation Shaft 22 Elongated Hole 23 Connection Lever 24 Projection 26 Second Extended Body

Claims (2)

[Claims] 1. A drive motor for driving an agitator in a washing tub, a timer for setting an operating time of the drive motor, and a timer incorporated in the timer and connected in series to the drive motor for controlling the operation time of the operating time. A first timer switch that is turned on for a period of time, a second timer switch that is built in the timer, that is connected in series with the first timer switch and the drive motor, and that repeatedly turns on and off during the operating time;
A timer lever movably provided on the timer for changing the ON / OFF ratio of the second timer switch according to the movement, a water flow switching knob, and a first lever extending in the radial direction of the rotating shaft of the water flow switching knob. The first elongated body, the elongated hole formed in the first elongated body, and the projection provided at one end are inserted into the elongated hole so that the elongated body can freely move in the elongated hole, and the other end is A connecting lever that is rotatably attached to the timer lever and that connects the timer lever and the first extension body, and a second lever that extends in the radial direction of the rotating shaft and is connected to the drain valve of the washing tub. With an extension body,
The connecting lever is configured to move only by the rotation of the elongated hole caused by the rotation of the water flow switching knob. When the water flow switching knob is rotated within a predetermined range, the connecting lever moves to cause the timer. In the washing machine in which the drain valve opens when the lever moves so as to change the on / off ratio of the second timer switch and the water flow switching knob is rotated outside the predetermined range, the water flow switching knob is opened. The washing machine is characterized in that the elongated hole is configured so that the timer lever is kept substantially stationary when the elongated hole is rotated outside the predetermined range. 2. The washing machine according to claim 1, wherein a longitudinal direction of the elongated hole substantially coincides with a radial direction of the rotary shaft.