JPS628198B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a control device for an automatic washing machine that automatically performs a series of processes such as washing and rinsing according to a predetermined program.

Hereinafter, one embodiment of the present invention will be described based on the drawings. Figure 1 is an electrical control circuit diagram of this embodiment.
Figure 2 is a program diagram showing the operation of each contact of the time switch. In both figures, 1 is the power supply, 2 and 3 are the start switch contacts, T ₁ to T ₅
are the contacts of the time switch, and contacts T ₁ to _{T 4} are the second contacts.
It operates as shown in the figure, and contact _T5 automatically reverses synchronously to reverse the washing machine's pulsator.

4 is a pressure switch that detects whether a specified amount of water supplied by the electromagnetic water supply valve 5 has entered the washing and dehydrating tank. 6 is a safety switch, which is opened when the top lid of the washing machine is opened during spin-drying, or when the fabric is uneven and spin-drying is not going well, etc., and turns off the power to the motor 7, solenoid valve 8, etc., and stops the spin-drying tank from rotating. stop. 9 is a capacitor, 10 is a motor for driving the time switch, and the rotation of this motor causes the contacts T ₁ to _{T 5} of the time switch to operate according to a predetermined program.

When washing is not being done, that is, when it is "off", the main contact _T1 of the time switch is open, and the contact 3 of the start switch connected in parallel with this is also open, and the washing machine starts operating. do not.

Figure 3 shows the relationship between the operations of the start switch pushbuttons P ₁ and P ₂ and the operations of contacts 2 and 3.
The above-mentioned washing machine is in a stopped state as shown in FIG. 3A.

At this point, press the “on” pushbutton of the start switch.
When P ₁ is pressed, the state shown in Figure 3B is established, and contacts 2 and 3
Both are closed, and the electromagnetic water supply valve 5 is energized via the NC contact of the pressure switch 4 to start water supply. When a specified amount of water accumulates in the washing and dehydrating tank, the pressure switch 4 switches from the NC contact to the NO contact, energizes the time switch drive motor 10 through the a side of contact T ₃ , and operates the time switch drive motor 10 through contact T ₄ .
The motor 7 is energized through the contact T ₅ on the a side of the washing machine, and the pulsator is driven to perform the washing operation. onwards,
Contact T ₁ ~ according to the program shown in Figure 2.
T ₄ operates and completes the process from washing to dehydration.

Here, if the start switch is returned from the state shown in FIG. 3B to the state A by the time the spin-drying is completed, the contact 3 will be open, and the washing operation will stop at the "off" position when the spin-drying is finished. Also, if push button _P2 of the start switch is pressed regardless of the operation of the time switch, contacts 2 and 3 will open and the state shown in Fig. 3C will occur, which will stop the power supply to the load for washing. This allows the main axis of the time switch to be operated by hand.

FIG. 4 shows an example of how to return the start switch from the state shown in FIG. 3B to the state shown in FIG.
is its main shaft, which is provided with a release rod 13, which is rotatable together with the main shaft 12, and is structured so that it pushes the fixing plate 14 of the start switch while the main shaft 12 rotates once. .

Figure 5 shows the configuration of the start switch, with reference numeral 15 as a mounting plate, and 16 and 17 as above-mentioned P ₁ and P _{2 .}
It is connected to the push plates 18 and 19 by a corresponding push button. The springs 20, 21 always return the push buttons 16, 17 upward in FIG. 5 by their biasing forces. In addition, the fixed plate 14
is fixed (held) with the push plate 18 or 19 pushed in.

22 is an interlocking plate that mechanically prevents the push plates 18 and 19 from being pushed in at the same time. Reference numeral 23 denotes a fixing plate spring, which is provided between the frame 24 and the fixing plate 14, and constantly presses and biases the fixing plate 14 in the right direction in the drawing.

In the above configuration, when the "on" push button 16 is pressed, the push plate 18 is pushed in against the spring 21, the fixed plate 14 is moved leftward in the drawing against the spring 23, and the interlocking plate 22 moves to the right to prevent the push plate 19 from being pushed. When the push plate 18 is completely pushed in, a protrusion (not shown) provided on the push plate 18 enters the notch 25 of the fixing plate 14, and the fixing plate 14 is returned to its original position by the biasing force of the spring 23. Returning, the pushbutton 16 is held in the depressed state and becomes the state B in FIG. 3, closing the contacts 2 and 3.
Then, when the shaft 12 of the time switch rotates and the release rod 13 fixed to it presses the fixed plate 14,
The fixed plate 14 moves to the left in FIG. 5 against the force of the spring 23, the protrusion of the push plate 18 that has entered the notch 25 is released, and the spring 21 pushes up the push plate 18 and the push button 16. , the state returns to the state shown in FIG. 3A. Therefore, the next time you want to wash your clothes, you only need to press the push button 16.

As described above, according to the present invention, it is possible to obtain a fully automatic washing machine that starts the washing operation simply by pressing the push button to the "on" state, unlike the conventional method of energizing a relay at the start. It is possible to provide a configuration that does not require a circuit, is inexpensive, and has excellent operability.

[Brief explanation of the drawing]

Fig. 1 is an electrical control circuit diagram of an automatic washing machine according to an embodiment of the present invention, Fig. 2 is a program diagram of the time switch, and Fig. 3 shows A, B, and C for explaining the operation of the start switch. 4 are external perspective views showing the release mechanism of the start switch, and FIG. 5 is a sectional view of the start switch. 2, 3... Start switch contact, T ₁ ...
Time switch contact.

Claims (1)

[Claims] 1. A time switch is provided to automatically perform a series of processes such as washing and rinsing, and this time switch has a contact that is open when it is turned off.
The configuration is such that power is supplied to other contacts of the time switch via this contact and the start switch, and one contact of the start switch is connected in parallel with the above contact, and the other contact of the start switch is connected in series with this parallel circuit. connected, one contact is configured to close when pushed, and the other contact is opened when pushed, and by pushing one contact and closing both contacts of the start switch, the series of steps described above is started. Then, by the time the release rod driven by the rotating shaft of the time switch completes a series of strokes and is turned off, one contact of the start switch is released from the closed state and one contact of the start switch is turned off. A control device for an automatic washing machine.