JPS59209381A - 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 that operates a washing drive motor to perform agitation washing.

In the conventional machine, the stirring blade is rotated at a rotation angle of 2006 mm.
There are devices that rotate at a predetermined angle back and forth, which stirs the inside of the washing tank for washing, but in this case (1), the rotation of the motor is controlled by gears, link mechanisms, etc. to generate the stirring motion. This method is suitable for large-capacity washing machines, but the mechanical part that generates the stirring motion is complex and expensive, making it difficult to adopt it for small-sized washing machines due to cost considerations.

Another possibility is to use a timer in this type of washing machine to operate the motor in forward and reverse directions to generate reciprocating motion of the stirring blades. Since an inertial force is applied, the rotating part must have sufficient strength to withstand this force, and a motor with a large electric capacity must be used, which has the disadvantage of being costly.

However, recently, in order to introduce this stirring method, an agitating washing machine has been proposed in which the motor is operated directly in forward and reverse directions using a timer to perform the agitating motion (#), but this only controls the power supply to the motor over time. Therefore, it can be manufactured at low cost. However, the agitating blade rotates several times and then moves around, creating the risk of a person's hands getting caught in the agitating blade, and the phenomenon (2) in which the items to be washed become tangled in the agitating blade has also occurred. In addition, since the energization time of the motor is constant, the rotation angle of the stirring blade is large when there is not much to wash, and the rotation angle is small when there is a lot to wash. It had the disadvantage of having

The present invention has been made in order to eliminate all of the above-mentioned drawbacks of the conventional method, and is based on the rotation angle of the stirring blade in an agitation pickling machine that performs agitation by driving a motor, in which all motors are intermittently rotated in one rotation direction. To provide a highly safe and low-cost stirring type washer that suppresses variations in the rotation angle due to the amount of resisting material.

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

In Figures 1 (A), (B) and F, (1) is the outer box of the washing machine, (21 is the outer box (11 is fixed inside the washing tank for washing).

(31 is a main shaft that is watertightly inserted into the center of the bottom of the washing tank (21) and rotatably supported by a main bearing (41).

(51 is the main shaft (within the shaft (21), a stirring blade (31) installed in the shaft, (61 is the main shaft (31) with a pulley (3) attached to the lower end; A plurality of detection holes (7) for detecting the rotation angle are provided circumferentially at predetermined intervals. (81 is a rotation angle detector, which is composed of one light emitting part (9) and a light receiving part (10j), and has two light emitting parts. The light from the part (9) reaches the light receiving part Q at the position of the detection hole (7) of 61.
The light is received by OI, and the rotation angle of Boo January 61, that is, the stirring blade (5
) The number of pulse signals corresponding to the rotation angle of the light receiving unit 00)
emanates from. 01) is the washing drive motor attached to the bottom inside the outer box (1), +121 is the motor 01)
Pulley attached to.

(131id pulley f61. (This is a belt that connects 121. The rotation of motor 01) is transmitted to the stirring blade (51) via pulley (6j, α force and bell) +131.

Figure #42 shows the control system of the above device, +141 is a control circuit, memory +151, arithmetic processing unit +1 (i+
, input control 07) and output control (181), control circuit LJ4i
K is connected to a power source via a power switch (19;
Control wholesale circuit (input to 141, memory 05) through k
and an arithmetic processing unit (161) and output control (181'e).
This output is applied to the motor (11) as a control signal, and the motor (11) is rotated clockwise by this output.

FIG. 3 is a flowchart illustrating the operating sounds of the apparatus, particularly the control system. Step (100) is a rotation angle setting section for setting the rotation angle (1P11 electric angle) of stirring R (5), and the number N of pulses corresponding to one rotation angle is set.

This value is entered into register XK at step (+01).

The number of pulses N is set so that the rotation angle including the inertial circuit of the stirring blade is approximately 360° or less when no load is applied. Step (103) is a stirring blade (
This counter counts the rotation angle of 51 (the number of pulses from the rotation angle detector + 81), and its value is input to the register T. Step (104) is a comparison section that compares whether the rotation angle of the stirring blade (51) has reached the set value N, and step (105) is a comparison section that compares whether the rotation angle of the stirring blade (51) has reached the set value N. This is a stop determination unit that determines whether the vehicle has stopped.

Next, the operation of the above device will be explained. First, wash the items, water and detergent. Store it inside the 12+ and turn on the power (5) switch (1!1').

In step (100), the number N of rotation angle pulses of the stirring blade (5) is set, and the value is entered into register X in step (lOl). The motor (11) rotates clockwise and the Boo 1
The stirring R (51 is also rotated clockwise through the moon 61 to start washing. At the same time, a pulse signal is generated from the one rotation angle detector (8). This pulse signal is counted by the counter in step (103). Put it in the T register and step (1
04) compares the contents of register T and register X.

If T(X), return to step (102) and motor (1
Continue driving to the right in 1). On the other hand, if T≧X, the power supply to the motor α1) is cut off in step (105), and in step (106), the pulse signal from the rotation angle detector (81) disappears, so that the agitator, which was rotating due to inertial force, is turned off. After confirming that the blade (51) has stopped, proceed to step (107).

Here, the T register is set to fO, and the process returns to step Qo2).

The program proceeds in the same way, and the power switch Q9i
The stirring blade (51) repeats intermittent rotational movement in one direction and continues washing until it is shut off.

In the above embodiment, the two rotation angle detectors are emitted (6),
- The main part and the light receiving part r (consisting of 9 light emitting parts are received by the light receiving part at the position of the pulley detection hole, and a pulse signal corresponding to the rotation angle of the stirring blade is detected. For example, the boo IJ' may be constructed of a magnetic material such as an iron plate, and a magnetoresistive element and a permanent magnet may be disposed at a position facing the detection hole, and the magnetic field applied to the magnetoresistive element may be controlled depending on the presence or absence of the detection hole. A structure in which the resistance change of a magnetoresistive element is detected entirely electrically due to a change in strength is considered.Based on the detection signal of the rotation angle of the broken stirring blade.

After determining that the stirring blade has stopped, the motor is controlled to rotate in the opposite direction, but the motor is not limited to this, but is it possible to control the overshoot angle due to inertial rotation?
Ideas include a method of detecting the amount and controlling the energization rotation angle based on this amount, and a method of controlling the motor to reverse rotation after a predetermined energization cutoff time after detecting the entire rotation angle of the stirring blade. It will be done.

As described above, according to the present invention, the rotation angle of the stirring blade is detected and based on the detection signal, the stirring blade is repeatedly rotated intermittently in one direction to wash the dirty items. (7) It reduces variations in the inter-vehicle rotation angle, reduces entanglement of the items to be washed, stabilizes the washing performance, allows for efficient washing, and reduces the amount of parts per rotation, reducing the motor's It is possible to provide a low-cost agitating type washing machine that can reduce capacity.

[Brief explanation of drawings]

Figures 1 (A) and (B) are respectively a longitudinal sectional front view and a cross-sectional bottom view taken along the line A-A of the apparatus of the present invention, Figure 2 is a configuration diagram of the control system of the apparatus of the present invention, and Figure 3 is a diagram of the apparatus of the present invention. 3 is a flowchart for explaining the operation of FIG. (2(... washing tank, (51... stirring blade, (61...
... Boo IJ, (7+... detection hole, (81...
Rotation angle detector, 01)... Washing drive motor, 0
4j...control circuit. Note that the same reference numerals in Figure 9 indicate the same or equivalent parts. Agent Masuo Oiwa (8)

Claims (1)

[Scope of Claims] In an agitating washing machine that performs washing by driving an agitating blade in a washing tank by driving a washing drive motor, there is provided a rotation angle detection unit that detects the rotation angle of the agitation blade, and this rotation angle detection unit. Based on the detected signal. It is characterized by comprising a control unit that controls the motor so that when the rotation angle of the stirring blade reaches a predetermined value, electricity is cut off to the motor and the motor is operated after the stirring blade has inertial rotation. An agitation type washing machine.