JPS59209382A - Stirring type 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 The present invention relates to an agitation type washing machine in which a washing drive motor is operated in forward and reverse directions to perform an agitation method.

In conventional washing machines, the stirring blades are rotated at an angle of 200°.
There are some that rotate at a predetermined angle back and forth and stir the inside of the washing tank to wash the water.

(1) In this case, the rotation of the motor is transmitted through gears, link mechanisms, etc. in order to generate the stirring motion, which is suitable for large-capacity washing machines, but the mechanical part that generates the stirring motion is It's complicated and expensive.

It was difficult to use this method in small-sized washing machines due to cost considerations.

However, in order to introduce this agitation method, an agitation-type washer has recently been proposed in which a timer is used to directly operate the motor in forward and reverse directions to perform the agitation movement. Because of this, it can be manufactured cheaply. However, since the stirring blade rotates several times, there is a risk that the hands of two people may get caught in the stirring blade, and there are also cases where the items to be washed become tangled in the stirring blade. Also, depending on the amount of items to be washed, the rotation angle of the stirring blade may not be constant.

There was a drawback that the original performance of the stirring type could not be fully demonstrated.

The present invention has been made in consideration of the above, and it suppresses the variation in the rotation angle of the stirring blade depending on the amount of washing, and performs high-performance washing safely (2) at a low cost. The purpose of the present invention is to provide an agitating type washing machine.

Embodiments of the present invention will be described below with reference to the drawings.

Figure 1) t In (B), (1) is the outer box of the washing machine, and (2) is the washing tank that is fixed inside the outer box (1) and performs washing.

+3) The main shaft f51 is pushed through the center of the bottom of the Fi washing tank (2) in a watertight manner and is rotatably supported by the main bearing (4).It is attached to the main shaft (3) in the Fi washing tank (2). (7) Permanent magnet (9) at a predetermined pitch on the circumferential edge to detect the rotation angle of the Ifi stirring R (5). It is a detection disk made of non-magnetic aluminum and is fixed to the main shaft. +
81 Fi angle detector, reed switch f101 is fixed to the bottom of the washing tank (2) so as to be disposed at a predetermined distance from the circumferential edge of the detection disc (7), and the reed switch 0α is The detection disc (7) rotates and the contact closes when the permanent magnet approaches. An electric circuit is constructed so that when the contact of the angle detector (81d!l-dwitch a) is closed, a predetermined voltage is generated (3), and when the stirring blade (5) rotates, it is proportional to the rotation angle. A number of pulse signals are generated from the angle detector (8).

al) is the washing drive motor attached to the bottom of the outer box (1), the pulley attached to the a21Fi motor aυ, (131 is the belt connecting the pulleys f61 and a2. The rotation of the motor Qll is caused by the pulley f6 ), (J2
1 and bell) (131) to the stirring blade (5).

FIG. 2 shows the control system of the above device, which includes a control circuit as an a41II'i control section, a memory αω, an arithmetic processing unit a6
).

It consists of an input control aη and an output control α, and a power supply is connected to the control circuit a1 via a power switch aω. Rotation angle detector (8
) detects the rotation angle of the stirring blade (5), and this detection signal is sent to the control circuit a(a) via the input control aη.
The signal is input to the memory aω and the arithmetic processing unit 061, and is applied as a control signal to the motor (11) via the output control a81, and this output causes the motor (Ill Fi to rotate clockwise and counterclockwise).

FIG. 3 is a (4) 7a-chart illustrating the operation of the above device, particularly the control system. Step 100 is a motor (Il)
forward/reverse operation flag of l, step 1011I′i stirring R(
5) in the rotation angle setting section for setting the rotation angle (energization angle).

The number N of pulses corresponding to the rotation angle is set, and this value is entered into register XK in step 102. Step 10
This is the forward/reverse operation switching section of the 3Fi motor Qll.

Step 106tj is a counter that counts the rotation angle (the number of pulses from the rotation angle detector (8)) of the stirring blade (5) when the motor is energized, and the value is input into the register T. Step 107 is a comparison section that compares whether the rotation angle of the stirring blade (5) has reached the set value NK, and step 109 Fi is a comparison unit that compares whether the rotation angle of the stirring blade (5) has reached the set value NK. The stop determination section that determines step 110 is a motor forward/reverse operation setting section.

Next, the operation of the above device will be explained. First, store the items to be washed, water, and detergent in the washing machine (411+23), and turn on the power switch. In step 100, a flag F=IK for executing clockwise rotation of the motor aυ is set, and in step 101
Then, the rotation angle pulse number N of the stirring blade (5) is set (5), and the value is entered into the register X in step (102). F at the forward/reverse operation switching section in step (103)
Since iF=1, the process proceeds to step (104), the motor (II) rotates clockwise, and the stirring R (5
) also rotates clockwise to start washing. At the same time, a pulse signal is generated from the one rotation angle detector (8). This pulse signal is counted in step (10 units) and put into the T register, and in step (107), the contents of register T and register X are compared.
Return to step 3) and continue driving the motor aυ in the right direction. If KT≧X, step (108) de-energizes the motor aI), and step (109) confirms that the pulse signal from the rotation angle detector (8) has disappeared (K) is rotating due to inertial force. Confirm that the stirring blade (5) has stopped, and in step (110), since tIF=1, step (n
t) Advance K, set left direction driving as P*0, set T register to 0 in step (113), and proceed to step (103).
) K Go back. Next, since P==O, step (105) K: Proceeds, and leftward driving f: starts. Thereafter, the K(6) program proceeds in the same manner as the rightward operation, and the stirring blade (5) repeats reciprocating motion and continues washing until the power switch tm+s* is turned on.

In the above embodiment, the motor is controlled to rotate in the opposite direction after the stoppage of the stirring blade is determined based on the detection signal of the rotation angle of the stirring blade, but the motor is not limited to this. Possible control methods include detecting the amount of electricity and controlling the energization angle based on this amount, or detecting the rotation angle of the stirring blade and controlling the motor to reverse rotation after a predetermined energization cutoff time. It will be done.

As described above, according to the present invention, the rotation angle of the stirring blade is detected by the configuration of the permanent magnet and the reed switch without being affected by dust or moisture, and the stirring blade is repeatedly rotated back and forth based on the detection signal. Since it shakes and stirs the items to be washed, there is less variation in the energizing angle regardless of the amount of items to be washed.

To provide an inexpensive agitating type washing machine (7) which reduces entanglement of items to be washed, stabilizes washing performance, performs washing efficiently, has a simple structure, and is suitable for use in adverse environments.

[Brief explanation of drawings]

FIG. 1 (-, (B) is a longitudinal sectional front view and a cross-sectional bottom view taken along the line A-A of the device of the present invention, FIG. 2 is a partially enlarged perspective view,
Fig. 23 shows the causes of control system failure in the device of the present invention, and Fig. 3 is a flowchart for explaining the operation of the device of the present invention. (2) Washing tank, (5) Stirring blade, (6 )・
...Pulley, (7)...Detection disk, (8)...Rotation angle closed detector, (9)...Permanent magnet. OQ...Pad switch, a1)...Washing drive motor. Millie fMJ control circuit. Note that the same line numbers in the two figures indicate the same or contrasting parts. Agent Masuo Oiwa (8) 475

Claims (1)

[Scope of Claims] In an agitating washing machine that performs washing by alternately driving a stirring blade in a washing tank in forward and reverse directions by driving a washing machine driving motor in forward and reverse directions, the rotation angle of the stirring blade is controlled. The detection signal of the rotation angle detection section and the one rotation angle detection section consists of a detection disk equipped with a plurality of permanent magnets at predetermined positions on the peripheral edge to be detected, and a reed switch arranged at a position corresponding to the permanent magnets. 1. A stirring type mulch machine comprising: a control section for controlling the motor;