JP3000507U - Washing machine - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a washing machine with a simple structure that can switch the water flow and open and close the drain valve with one water flow switching knob. [Structure] Long hole 22 formed by rotation of water flow switching knob 7
The connecting lever 23 moves to the left and right only by the rotation of. When the water flow switching knob 7 is rotated within a predetermined range,
The connecting lever 23 moves, and the timer lever 19 changes the ON / OFF ratio of the second timer switch. When the water flow switching knob 7 is rotated outside the predetermined range, the connecting wire 27 is pulled and the drain valve is opened. Water flow switching knob 7
When is rotated out of the predetermined range, the timer lever 19 maintains a substantially stationary state with respect to the rotation of the slot 22. Therefore, with one water flow switching knob, 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.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a washing machine.

[0002]

[Prior art]

 The structure of the main part of the conventional washing machine disclosed in Japanese Utility Model Laid-Open No. 4-130774 will be described with reference to FIGS. 11 to 13. Reference numeral 100 is a timer for setting the operating time of the drive motor for driving the agitator in the washing tub. The timer 100 is connected in series to the drive motor and is turned on during the operation time. A first timer switch is connected in series to the first timer switch and the drive motor to turn on and off during the operation time. A repeating second timer switch is built in (both switches are not shown). Reference numeral 101 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 first extension body 104 is an elongated hole formed in the first extension body 102 in an arc shape around the rotation shaft 103, and 105 is a projection provided at one end in the elongated hole 104. Is connected to the timer lever 101 at the other end while being inserted into the slot 104 so that the timer lever 101 and the first extension body 102 can be freely moved. Is. One end of the connecting lever 105 is in a state where the protrusion is inserted into the elongated hole 104 and does not undesirably come off from the first extension body 102. Further, the other end of the connecting lever 105 does not undesirably come off 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. A spring that pulls 105 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, and the connecting lever 105 has a projection with the elongated hole 104 as shown in FIG. While being kept in contact with the left end, the spring 108 pulls and moves to the left. On the other hand, when the water flow switching knob is rotated in the most clockwise direction within the predetermined range, the elongated hole 104 moves to the right as shown in FIG. 12, and the connecting lever 105 has the projection on the left end of the elongated hole 104. While keeping the contact state, it moves to the left against the force of the spring 108.

When the connecting lever 105 moves left and right in this way, the timer lever 101 rotates counterclockwise and clockwise as shown in FIGS. 11 and 12, and the on / off ratio of the second timer switch is changed. change. Therefore, the first timer switch is turned on during the washing time and the rinsing time, which are the operation time set by the timer 100, while the second timer switch is turned on and off based on the changed ratio as described above. . As a result, 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 connecting line 107 is stretched, the drain valve is pulled through the connecting line 107, the drain valve is opened, and the drainage is performed. Be seen. 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 opened. do not do.

Then, as described above, when the water flow switching knob is rotated further in the counterclockwise direction beyond the predetermined range, the timer lever 101 and the connecting lever 105 are in a stationary state. That is, the elongated hole 104 is further rotated counterclockwise in accordance 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 protrusions and affect the protrusions.

[0007]

[Problems to be solved by the device]

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

However, in order to avoid the projection of the connecting lever 105 when the water flow switching knob is rotated beyond a predetermined range during drainage, the elongated hole 104 is required as described above. By providing the elongated hole 104 in this way, when the water flow switching knob is rotated within the predetermined range when switching the water flow, the second timer switch is turned on and off via the projections to change the ratio. The spring 108 is provided so that the connecting lever 105 and the timer lever 101 can move following each other. Without this spring 108, even if the elongated 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 elongated hole 104 (in the elongated hole 104 of the protrusion). The relative position of the second timer switch changes, and 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 and to open / close the drain valve with a single water flow switching knob without adding a component such as a spring. The purpose of the present invention is to provide a washing machine that is simple and has a simple structure, and that can reduce the number of assembling steps and the cost.

[0010]

[Means for Solving the Problems]

 The present invention provides, as the structure of claim 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 drive motor incorporated in the timer. Is connected in series to the first timer switch that is turned on for the above operating time, and is built in the timer, and is connected in series to the first timer switch and the drive motor to turn on and off during the above operating time. A second timer switch that repeats, a timer lever that is rotatably provided on the timer and that changes the ON / OFF ratio of the second timer switch according to the rotation, a water flow switching knob, and a water flow switching knob. A first extension body extending in the radial direction of the rotating shaft, an elongated hole formed in the first extension body, and a protrusion provided at one end are provided with the above-mentioned long length so that the protrusion can freely move in the long hole. hole And the other end is rotatably attached to the timer lever and extends in the radial direction of the rotating shaft and the connecting lever that connects the timer lever and the first extension body. A second extension body connected to the drain valve of the tank via a connecting wire is provided, and the connecting lever is moved in the left-right direction only by rotating the elongated hole by rotating the water flow switching knob. When the water flow switching knob is rotated within a predetermined range, the connecting lever moves and the timer lever rotates so as to change the on / off ratio of the second timer switch. In the washing machine in which the drain valve is open when the water flow switching knob is rotated outside the predetermined range, when the water flow switching knob is rotated outside the predetermined range, the rotation of the elongated hole is prevented. the above Imareba as to maintain a substantially stationary state, in which the upper SL slot is longitudinally configured in a state substantially coincides with the radial direction of the rotating shaft.

Further, as the structure of claim 2, a rib integrally formed with the first extension body is provided, and when the water flow switching knob is rotated out of the predetermined range, the rib causes the connecting line to move. The connecting wire is configured to be gripped and to prevent the connecting wire from hitting the connecting lever.

Further, according to a third aspect of the present invention, a part of a rotary shaft of the water flow switching knob is polygonal, and a leaf spring that abuts the polygonal portion is provided, and the water flow switching knob is rotated to rotate the water flow switching knob. 2 The side of the polygonal portion faces the leaf spring when the on / off ratio of the timer switch is switched and the drain valve is opened.

[0013]

[Action]

 When switching the water flow, the water flow switching knob is rotated within a predetermined range. Then, the elongated hole formed in the first extension of the rotary 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. Wow 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 agitator performs intermittent rotation according to the above ratio during the operating time 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 is rotated to pull the connecting wire, open the drain valve, and drain the water. At the same time, the oblong hole also turns, but with respect to the turning of the oblong hole at this time, the connecting lever moves but the timer lever remains almost stationary, and the water flow switching operation is performed undesirably. I don't know.

Further, when the water flow switching knob is rotated out of the predetermined range, the connecting line is handheld by the rib of the first extension body, and a large stroke of the drain valve is secured, so that the drain valve is reliably opened. To do. Further, the action of the ribs prevents the connecting line from undesirably hitting the connecting lever.

Further, the side of the polygonal portion of the water flow switching knob faces the leaf spring when the second timer switch is turned on, the off ratio is switched, and the drain valve is opened by rotating the water flow switching knob. . Therefore, when the switching operation is performed, the water flow switching knob is restricted to the switching position and does not rotate undesirably.

[0017]

【Example】

 A two-tub type washing machine according to an embodiment of the present invention will be described with reference to FIGS. 1 to 7. Figure 1 shows the appearance of the washing and rinsing machine. 1 is a main body of a washing machine having a built-in washing tub and a dehydrating tub (neither is shown), 2 is a washing lid which is arranged on the upper part of the main body 1 of the washing machine, and which opens and closes the upper opening of the washing tub, 3 is the washing machine A dehydration lid, which is arranged on the upper part of the machine body 1 and opens and closes the upper opening of the dehydration tub, 4 is a drain hose, and 5 is a control panel made of synthetic resin provided on the rear side of the upper part of the washing machine body 1. .

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 tap outside the washing machine body 1 is attached / detached. A water supply port 10 that is freely connected is a water supply switching knob that is operated to selectively guide tap water supplied to the water supply port 9 through a water supply hose to a washing tub or a dehydration tub.

FIG. 2 shows a circuit of the washing machine. 11 is a washing drive motor for driving the agitator in the washing tub, 12 is a washing timer operated by the washing timer knob 6 to set an operating time of the washing drive motor 11 which is a washing / rinsing time, The washing timer 12 has a first timer switch 13 connected in series with the washing drive motor 11 and turned on for the operating time, and a series of the first timer switch 13 and the washing drive motor 11. It has a built-in second timer switch 14 that is connected and repeats on and off during the above operating time. In this case, the movable contact c is alternately turned on to the contact points 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 to the dehydration drive motor 15 in series. A dehydration timer switch 17 which is turned on during the dehydration time is incorporated.

FIG. 3 shows the operating state of the second timer switch 14 during washing and rinsing. The first timer switch 13 is turned on during the operating 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 operated as shown in FIG. Repeat 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 each, sandwiching an off period of 2 seconds. On the other hand, when the soft water flow is set to be switched by the water flow switching knob 7, the second timer switch 14 is repeatedly turned on and off as shown in FIG. 3 (b). That is, the movable contact c is alternately turned on for 4 seconds at the contacts a and b with the 12-second off period interposed.

As described above, the ON / OFF ratio of the second timer switch 14 is changed based on the water flow switching setting of the water flow switching knob 7, and the washing drive motor 11 is based on the ratio during the operating time. Drive control is performed, and the stirring body performs intermittent inversion drive according to the above ratio during the above operation time so as to generate a desired water flow. That is, a standard water flow occurs under the ratio corresponding to FIG. 3 (a), and a soft water flow occurs under the ratio corresponding to FIG. 3 (b).

FIGS. 4 to 6 show the structure of the main part near the washing timer 12. Reference numeral 18 is a rotary shaft of a washing timer 12 to which the above-mentioned washing timer knob 6 is attached, 19 is movably provided on the washing timer 12, that is, rotatable, and the turning on of the second timer switch 14 is accompanied by the rotation. , A timer lever for changing the off ratio, 20 is a first extension body extending in the radial direction of the rotary shaft 21 of the water flow switching knob 7, and 22 is an elongated hole formed in the first extension body 20, The longitudinal direction of the slot 22 substantially coincides with the radial direction of the rotary shaft 21. The protrusion 23 provided at one end is inserted into the elongated hole 22 so that the protrusion 24 can be freely moved inside the elongated hole 22, and the other end is rotatably attached to the timer lever 19. A connection lever that connects the timer lever 19 and the first extension body 20.

In this case, a cutout 25 is connected to the long hole 22, while the protrusion 24 has a T-shaped structure at the tip (on the front side in the drawing) that matches both the long hole 22 and the cutout 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 protrusion 24 is passed through the slot 22 and the notch 25, and then the connecting lever 23 is moved to the position shown by the chain line. By carrying it, one end of the connecting lever 23 is prevented from being undesirably detached from the first extension body 20 when the protrusion 24 is inserted into the elongated hole 22. That is, the T-shaped structure serves as a stopper. The other end of the connecting lever 23 is also structured so as not to be undesirably disengaged 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 formed integrally with 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-right direction and either one of FIG. 4 or FIG. To the position. Specifically, when the water flow switching knob 7 is rotated most clockwise in the predetermined range, the slot 22 moves to the right and the connecting lever 23 follows the slot 22, as shown in FIG. 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 follows the slot 22 and moves to the left as shown in FIG. Move towards.

When the connecting lever 23 moves left and right in this way, 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 moved. The switching is performed, and the on / off ratio of the second timer switch 14 is changed. When the timer lever 19 is rotated as shown in FIGS. 4 and 5, the second timer switch 14 is turned on and off and set by the washing timer 12 as shown in FIGS. 3 (a) and 3 (b), respectively. Standard water flow and soft water flow are generated during the operating time, which is washing and operating time.

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 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 wire 27 is in a state of being hand-wound by the cylindrical rib 28, the stroke of the drain valve is large, and the drain valve is reliably opened. Moreover, the action of the cylindrical rib 28 prevents the connecting line 27 from undesirably hitting the connecting 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.

When 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 along 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 before the water flow switching knob 7 is returned to within the predetermined range, the timer lever 19 is still stationary. Also, the timer lever 19 itself is regulated so as to maintain a stationary state.

As can be seen from the above description, the movement of the connecting lever 23 in the left-right direction due to the rotation of the water flow switching knob 7 within the predetermined range is caused by the rotation of the water flow switching knob 7. Only by turning 22. 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 is rotated. In response to the movement, the timer lever 19 remains almost stationary.

8 to 10 show another embodiment of the rotary shaft 21. A part of the rotating shaft 21 has a polygonal cross section, that is, an irregular pentagon, and a leaf spring 29 that comes into contact with the irregular pentagon is provided. 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 water. The rotary shaft 21 is restricted to the position shown in FIG. That is, each side of the irregular pentagonal portion faces and abuts against the leaf spring 29. Therefore, when the water flow switching knob 7 is switched as described above, the water flow switching knob 7 is prevented from undesirably rotating.

[0031]

[Effect of device]

 According to the present invention, the connection lever is moved in the left-right direction 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 within a predetermined range. When rotated inside, the connecting lever moves, the timer lever rotates 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 open, when the water flow switching knob is rotated out of the predetermined range, the timer lever is kept almost stationary with respect to the rotation of the slot. It is a structure of a slot. Therefore, 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 without adding a spring as in the conventional case. Therefore, it is possible to provide a washing machine having a simple structure and capable of reducing the number of assembly steps and costs.

Further, a rib integrally formed with the first extension body is provided, and when the water flow switching knob is rotated outside the predetermined range, the rib guides the connection line and the connection line It is configured to suppress the contact with the connecting lever. Therefore, it is possible to secure a large stroke of the drainage valve and surely open the drainage valve, and at the same time, it is possible to prevent the connection line from undesirably hitting the connection lever and causing the drainage valve to move poorly.

Further, a part of the rotation axis of the water flow switching knob is polygonal, and a leaf spring is provided in contact with the polygonal portion, and the turning on / off ratio of the second timer switch is caused by the rotation of the water flow switching knob. The side of the polygonal portion faces the leaf spring when the switching is performed and the drain valve is opened. Therefore, when the switching operation is performed, the water flow switching knob is restricted to the switching position and does not rotate undesirably.

[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 Extension Body 21 Rotation Shaft 22 Slot 23 Connection Lever 24 Protrusion 26 Second Extension Body 27 Connection Line 28 Cylindrical rib 29 Leaf spring

Claims (3)

[Scope of utility model registration request] 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;
The timer is rotatably provided, and the timer lever changes the ON / OFF ratio of the second timer switch according to the rotation, the water flow switching knob, and the water flow switching knob extending in the radial direction of the rotating shaft. The first extension body, the elongated hole formed in the first extension body, and the protrusion provided at one end are inserted into the elongated hole so as to be freely movable in the elongated hole, and the other end. Is rotatably attached to the timer lever, is connected to the connection lever connecting the timer lever and the first extension body, and is extended in the radial direction of the rotary shaft, and is connected to the drain valve of the washing tub with a connection line. A second extension body connected via the water flow switching knob, and the connecting lever moves in the left-right direction only by rotating the elongate hole by rotating the water flow switching knob. When turning inside When the connecting lever moves, the timer lever rotates so as to change the on / off ratio of the second timer switch, and when the water flow switching knob rotates outside the predetermined range, the drain valve In the washing machine in which the slot is opened, when the water flow switching knob is rotated out of the predetermined range, the longitudinal direction of the elongated hole is set so that the timer lever remains substantially stationary with respect to the rotation of the elongated hole. A washing machine, characterized in that the washing machine is configured to substantially match the radial direction of the rotating shaft. 2. A rib integrally formed on the first extension body is provided, and when the water flow switching knob is rotated outside the predetermined range, the rib guides the connection line and the connection line is moved by the rib. The washing machine according to claim 1, wherein the washing machine is configured to prevent the connection lever from hitting. 3. A turning shaft of the water flow switching knob is polygonal, and a leaf spring abutting the polygonal portion is provided, and the second timer switch is turned on and off by the rotation of the water flow switching knob. 3. The washing machine according to claim 1, wherein a side of the polygonal portion faces the leaf spring when the ratio is switched and the drain valve is opened.