JP2576101Y2 - Drum type washing machine - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drum type washing machine.

[0002]

2. Description of the Related Art As a conventional example, an outer tub provided in a frame, a washing drum rotatably supported in the outer tub, and a clothing inlet provided on the upper portion of the outer tub and on the drum. A motor for driving the rotation of the drum, a magnet fixed to a drive pulley of the drum, and a position facing and close to the magnet when the outer tub and the charging ports of the drum match. And a reed switch operable when the magnet is brought close to the drum. A drum type washing machine for stopping the rotation of the drum when the reed switch is activated is disclosed in
No. 5-488398 (D06F37 / 40).

[0003]

[Problems to be Solved by the Invention] In the conventional example, the operation timing of the reed switch becomes non-uniform due to the difference in the magnetic force of the magnets, etc. There is a problem in that there is something that cannot be stopped accurately at the localization value.

When the drum is stopped at the localization value,
While rotating the drum slowly, for example, if the magnet is at a position far from the reed switch at the beginning of rotation, the drum will be accelerated by the time the magnet activates the reed switch, and the positioning will be stopped accurately. There is a problem that cannot be done.

The present invention relates to an improvement of a drum type washing machine,
Such a problem is solved.

[0006]

The drum-type washing machine of the present invention comprises a drum rotatably supported in an outer tub, a clothing inlet provided on the upper portion of the outer tub and on the drum, and A motor for driving the rotation of the drum, a magnet fixed to the drum or a rotating body that rotates in conjunction with the drum, and two magnets provided at positions close to and opposed to the magnet and operated when the magnets approach. A reed switch, braking means for preventing rotation of the motor, and braking means for reversing the motor each time each of the reed switches is actuated, thereby causing the magnet to reciprocate between the reed switches, when the inlet of the outer tub and the drum are matched, structure that the magnet is positioned at the midpoint of the two reed switches
In addition, the braking means measures the time from the operation of the one reed switch to the operation of the other reed switch during the reciprocating operation, and thereafter, the one reed switch is operated. from those <br/> configured with actuating said braking means at the time of the lapse of half of the time that the measurement.

As the braking means, there are a means for mechanically locking a drum or a motor and a means for electrically braking a motor, and at least one method may be adopted.

[0008]

In other words, even if the operation timing of each reed switch is shifted due to a decrease in magnetic force or the like, it is relatively shifted. Therefore, the time from when one reed switch is activated to when the other reed switch is activated is determined by the magnet. It is not affected by the magnetic force. Therefore, this time is measured, and then the drum is stopped when half of the time has elapsed since one reed switch was activated.

Further, the localization stop control is performed while the magnet is reciprocating between the reed switches.
For example, if the magnet is at a position far from the reed switch at the beginning of rotation and the magnet accelerates before the magnet activates one reed switch, the acceleration decreases during the reciprocating operation, and the rotation speed of the drum decreases. Becomes stable.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the drawings.

1 to 9, reference numeral 1 denotes a frame made of sheet metal, 2 denotes an outer tank formed of a synthetic resin in the shape of a horizontal axis drum, and 3 denotes a synthetic resin supporting the lower portion of the frame 1. The base 4 is a shield plate for opening and closing an opening 5 provided at the bottom of the base, 6... Is for elastically suspending and supporting the outer tub 2 from above the frame 1. .. Are lower supports disposed between the lower part of the outer tub 2 and the base 3, and 8 is a rectangular tube-shaped upper part of the outer tub 2. It is a cylindrical body integrally formed by protruding, and a clothing input port B9 is formed in the upper part of the outer tub 2 by this.

Reference numeral 10 denotes a synthetic resin upper surface plate fixed to the upper end of the frame 1. A concave portion 11 is formed at the center of the upper plate, and a clothing input port A12 is opened here.
13 is an upper lid pivotally supported by the rear edge of the recess 11 to open and close the clothing inlet A12, 14 is an upper lid locking device for preventing the upper lid 13 from opening, and 15 is the upper plate. 10, a keyboard for selecting a washing program, a pause key for temporarily stopping the program, an upper lid opening key for releasing the upper lid lock device 14, and the like. . Reference numeral 16 denotes a bellows-shaped rubber packing.
9 and the inlet B12 are connected in a watertight manner.

The outer tub 2 is formed separately from only a front wall 2a of the outer tub 2. The front wall 2a is fixed to the outer tub 2 through a front opening of the outer tub 2 after accommodating a drum to be described later. Reference numeral 17 denotes an outlet opening formed at the center of the front wall 2a, and reference numeral 18 denotes an air duct formed on the outer surface of the front wall 2a, which is formed in a teardrop shape so as to surround the outlet opening 17.

Reference numeral 19 denotes a drum front bearing fixed to a wall surface of the blower duct 18 facing the outlet 17, and 20 denotes a sheath heater A, 21 to 23 disposed in the blower duct 18. Are fixing brackets A to C for fixing the heater A 20 in the drying duct 18, and have a cylindrical shape with one side open, and a closed end is located in the drying duct 18. The fitting is fixed from the outside of the wall surface, and the heater A20 is fixed to the closed end. 24
The negative characteristic thermistor A, 25 inserted and fixed to the fixing bracket C23 from the open end thereof is provided with an annular groove A, 26 formed on the inner surface of the front wall 2a so as to surround the outlet opening 17. An overflow port 27 which is opened at a height of 1/2 of the front wall 2a is integrally formed with the front wall 2a,
This is an overflow chamber for drawing out overflow from the overflow port 26.

Reference numeral 28 denotes an air trap formed integrally with the lower part of the front wall 2a, and is connected to a water level sensor 29 fixed to the back surface of the upper plate 10 via a pressure hose 29a. Reference numeral 30 denotes a circulation duct integrally formed at a position above the overflow level of the front wall 2a, and communicates with the inside of the outer tank 2 via a circulation port 31.
33 is a blower fan provided in the circulation duct 30;
4 is a blast outlet of the blast fan 33 and the blast duct 1
8 is a connection pipe for connecting to the inlet port 8.

Reference numeral 35 denotes a drain port provided near the end of the bottom of the outer tub 2. Reference numeral 36 denotes a drain hose for leading drainage from the drain port 35 to the outside of the machine. Is the overflow hose 37 at the bottom of the overflow chamber 27.
Connected through. Reference numeral 38 denotes a drainage electric valve for opening and closing the drainage port 35. As is well known, the valve is opened by winding the wire with the rotational force of a drainage motor 39 to cut off the rotational force of the motor. As a result, the valve returns to the closed state by the urging of a spring (not shown).

Reference numeral 40 denotes a step formed on the inner peripheral wall of the outer tank 2 at a height of about 1/3 of a wall farthest from the drain port 35, and 41 is mounted and fixed on the step 40. A large number of water sprinkling holes 42 are formed along the lower surface so as to face downward in the mounted state. Further, one end of the water supply cylinder 41 is closed, and the other end 43 projects from the front wall 2a of the outer tub. The other end 42 is threaded and is fixed with a nut 44 after projecting from the front wall 2a. Reference numeral 45 denotes a stopper for the water supply cylinder 40.

Numeral 46 designates a double feed water supply solenoid valve device fixed to the upper rear part of the frame 1. One of the water supply valves A4 is provided.
6a is connected to the finishing agent charging container 47. Also,
The finishing agent charging container 47 is connected to a connection port 49 formed in the cylindrical body 8 via a bellows hose 48. That is, since the water from the water supply valve A46a is supplied into the outer tub 2 via the finishing agent charging container 47, the finishing agent such as the softener stored in the finishing agent charging container 47 is removed. , Together with water. Although not shown in the finish agent charging container 47,
It has a water channel for bypassing the supplied finishing agent, and is appropriately switched by switching means to supply water from the water supply valve A46a into the outer tank 2 while avoiding the finishing agent. it can.

Reference numeral 50 denotes the water supply valve A4 for introducing a part of the water from the water supply valve A46a into the drying duct 18.
Branch hose A connected between 6a and drying duct 18
With the water from the hose A50, the heater A20 is cooled to prevent a fire accident and to prevent heat.
Wash off the dust on the A20. During the water supply, the heater A20 is never energized, so that no water is applied during the energization of the heater A20.

Reference numeral 51 denotes a branch hose B connected between the water supply valve A46a and the overflow chamber 27 to introduce a part of the water from the water supply valve A46a into the overflow chamber 27 from above.
It is.

The other water supply valve B46b is provided with a water supply hose B52.
Is connected to the water supply cylinder 41 via the. The water from the water supply tube 41 flows in a film shape on the wall and bottom of the outer tub 2 and reaches the drain port 35.

Further, a branch hose B53 is branched from the water supply hose B52, and a distal end of the branch hose B53 is connected to a nozzle 54 provided at a central upper portion of the front wall 2a.
It is connected to the. The water from the nozzle 54 is jetted toward a drum described later.

Numeral 55 denotes sheath heaters B, 56 and 57 disposed on the inner bottom of the outer tub 2 and fixing brackets D and E for fixing the heater B55. A to C2
1-23, of which the fixing bracket D56
Is provided at a position further away from the water supply port 41 than the drain port 35, and has a negative characteristic thermistor B inside.
58 are provided.

Reference numerals 59 to 61 denote three vertical walls which are provided in parallel at the bottom of the outer tank 2 so as to block a flow path from the water supply cylinder 41 to the fixing fitting D56. The water from the water supply cylinder 41 to the fixing fitting D56 is guided in the direction of the drain port 35 as shown by an arrow in FIG. The height of the standing walls 59 to 61 is preferably as high as possible.
It is necessary that the heat is not damaged by the heat of the tab B55.

Reference numeral 62 denotes a drum rear bearing fixed to the center of the rear wall of the outer tub 2.

Reference numeral 63 denotes a synthetic resin drum rotatably supported in the outer tub 2;
4, a fluid balancer 65 mounted on the front side of the body 64, and an end plate 66 fixed on the front side of the balancer 65.
It is composed of

.. 67 are baffles having a triangular cross section which are bulged at 120 degrees along the inner peripheral surface of the body 64.
8 · · · a large number of through holes drilled around the body 64, 6
Reference numerals 9... Denote a plurality of horizontal ribs A integrally formed along the inner peripheral surface of the body 64.

A suction port 70 facing the introduction opening 17 is formed at the center of the end plate 66, and a support shaft 71 is fixed to the center of the suction port 70. 72 is a cross-shaped reinforcing angle fixed to the center of the rear panel of the body 64; 73 is a support shaft fixed to the center of the angle 72; 74 is the suction port 70 Annular groove B formed so as to surround the outer groove 2. The annular groove B is loosely fitted in the annular groove A25 of the outer tub 2 so that a seal structure is formed between the outlet opening 17 and the suction port 70 by a labyrinth effect. Are formed.

At the time of drying, the drying air is blown by the blower fan 33, the connection pipe 34, the blower duct 18 and the suction port 70.
-Circulates in the drum 63-circulation port 31-circulation duct 30-blower fan 33- In addition, at the time of this drying, the water supply valve B46b is driven, and water flows in a film form from the peripheral wall of the outer tub 2 to the drain port portion 35, and the dried air after the heat exchange touches the water film. Thereby, it is cooled and dehumidified.

At this time, the fixture D56 (thermistor C58) is located outside the area of the water film due to the standing walls 59 to 61.

Reference numeral 75 denotes a clothes input port C formed on the peripheral surface of the drum 63, and 76 denotes an opening and closing of the input port C75.
A synthetic resin lid 77 slidably provided along the peripheral surface of the drum 63 is a disengagement mechanism formed between one side edge of the lid 76 and an edge of the input port C75. , 7
Numeral 8 denotes a storage unit integrally recessed at the center of the upper surface of the lid 76, where the detergent is stored in advance.

The drum 63 has its support shaft 7
1, 73, it is rotatably supported by the drum front bearing 19 and the drum rear bearing 62. Further, the support shaft 62 protrudes from the rear wall of the outer tub 2, and a driving pulley 79 is fixed thereto. 80 is the outer tank 2
Is a three-phase induction motor fixed to the outer bottom of the drive pulley 79, and is connected to the drive pulley 79 via a small pulley 81 and a belt 82. The induction motor 80 is driven by an inverter, as will be described later, and is rotated at a low speed during washing and drying, and at a high speed during dehydration.

Reference numeral 83 denotes a drum lock device for fixing the drum 63 so as not to rotate, and is constructed as follows.

That is, reference numeral 84 denotes a gear integrally formed with the small pulley 81, and reference numerals 85, 85 denote locking levers having a claw 86 formed at one end thereof for locking to the gear 84. The part is pivotally supported, and the one end is provided with a spring 87.
Accordingly, it is urged to rotate in the direction of releasing the locked state with the gear 84. Reference numeral 88 denotes a torque motor connected to the other end of the locking lever 85 via a connecting wire 89 and a spring 90. By winding the connecting wire 89, the locking lever 85 By rotating against the urging force of the spring 87, the claw 86 is locked to the gear 84.
When the claw 86 is locked, the gear 84 does not rotate, so that the drum 63 linked to the gear 84 is locked.

When the torque motor 88 is turned off, the pawl 86 is disengaged from the gear 84 by the urging force of the spring 87, and the lock of the drum 63 is released.

Reference numerals 91 and 92 denote reed switches mounted on and adjacent to the same circumference of the outer tub 2, and reference numeral 93 denotes a drive pulley 79 disposed at a position opposed to and close to the magnets 91 and 92. A reed switch 91,
Reference numeral 92 denotes the magnet 9 as the drive pulley 79 rotates.
3 closes when approached, and opens when separated. Also,
The intermediate point between the reed switches 91 and 92 (FIG. 5P)
With the magnet 93 positioned at (point), the input port C7
5 and the input port B9 are set to match.

Reference numeral 94 denotes an abnormal vibration detection lever for detecting excessive swinging of the outer tub 2.

Next, a control mechanism of the washing / dehydrating / drying machine of this embodiment will be described with reference to FIGS.

Reference numeral 95 denotes a micro computer (for example, LC6523 type manufactured by Sanyo Electric Co., Ltd., hereinafter referred to as a microcomputer) which is a control center.
U96 (central processing un
it), RAM 97 (random access m
emory), ROM98 (read only mem)
ory), a timer 99, a system bus 100, and input / output devices 101 and 102.

The CPU 96 includes a control unit 103 and a calculation unit 104. The control unit 103 fetches and executes an instruction. The calculation unit 104 receives the instruction from the control unit 103 in the execution stage of the instruction. The arithmetic processing such as binary addition, logical operation, increase / decrease, comparison, etc. is performed on data given from an input device or a memory by a control signal. The R
The AM 97 is for storing data relating to the device, and the ROM 98 is preliminarily read with means for operating the device, setting conditions for determination, rules for processing various information, and the like. Things.

The microcomputer 95 includes an input key circuit 105 composed of various operation keys, the water level sensor 29, a micro switch 106 for detecting abnormal vibration,
Lead switches 91 and 92, abnormal foam detection circuit 10
7. First temperature detection circuit 108, second temperature detection circuit 109
The microcomputer 95 inputs a signal from the microcomputer 95 to the inverter circuit 110 for rotationally driving the motor 80, the water supply solenoid valve A46a, and the water supply solenoid valve B4 based on the information.
6b, the drain valve motor 39, the blower fan 33,
A drive signal is sent to the heater A20, the heater B55, the buzzer sounding circuit 111, the display device 112 composed of various light emitting diodes (LEDs), the upper lid lock device 14, and the drum lock device 83. Send each one. Reference numeral 113 denotes a driver circuit for driving each of the loads.

Since the inverter circuit 110 has a conventionally well-known configuration, its description is omitted. However, the inverter circuit 110 converts a DC voltage into a pulse having a predetermined period and applies it to the motor 80. Since the rotation speed of the motor 80 is proportional to the frequency of the applied voltage, the microcomputer 95 can freely change the rotation speed of the motor 80 by changing the frequency of the inverter circuit 110. Can be changed.

The water level sensor 29 also has a conventionally well-known structure, so a detailed description thereof will be omitted. In short, however, the water level sensor 29 responds to a pressure change in the air trap 28 due to a water level change in the outer tub 2 so as to be magnetically driven. The body is moved in and out of the coil to change the inductance of the coil, and the change in the inductance of the coil is extracted as a change in the oscillating frequency of the oscillation circuit, and is input to the microcomputer 95.

The microcomputer 95 detects the water level in the tank continuously and over a wide range by determining the oscillation frequency of the pulse signal.

The first temperature detecting circuit 108 is for detecting the temperature TA in the air duct 18 (because the air duct 18 is in communication with the outer tank 2, as a result, The temperature at the entrance to the inside is detected.) As shown in FIG. 13, the constant voltage VREF is applied to the thermistor A24.
Is input to the microcomputer 95, and the microcomputer 95 converts the input voltage value by a built-in A / D converter, and outputs the voltage VR2 determined by dividing the voltage by the resistance value RTH and the resistor R2. The temperature TA is detected by comparing with a reference value stored in the ROM 98. R1 is a current limiting resistor.

The second temperature detecting circuit 109 is also the same as the first temperature detecting circuit 108 (however, various resistance values are appropriately changed). The temperature TB near the heater B55 is detected (the temperature of the washing water at the time of cleaning, and the temperature in the outer tank, that is, the temperature of the exhaust gas at the time of drying).

The washing machine of this embodiment sequentially executes the steps of washing, intermediate dehydration, first rinse, intermediate dehydration, second rinse, final dehydration and drying under the control of the microcomputer 95. I do.

During the washing process, the motor 80 is used.
As a result, the drum 63 is repeatedly inverted at a low speed (about 50 rpm), so that the laundry in the drum 63 is scooped up by the baffle and falls from the upper side to the lower side. It is scrubbed by the lateral ribs A69. Further, during this time, the washing water is supplied to the heater B.
The cleaning efficiency is improved by being heated by 55.

In the dehydrating step, the drum 63 is rotated in one direction by the motor 80 at a high speed (about 800 rpm), and the laundry in the drum 63 is dehydrated by centrifugal force.

The operation in the drying step is as shown in FIGS.

That is, during the drying step, the drum 63 is repeatedly inverted at a low speed by the motor 80 in a cycle of 15 seconds ON and 1 second OFF, and the drum 63 is moved from the air duct 18 and the suction port 70 to the drum 63. The drying air heated by the heater A20 is introduced thereinto, and heat exchange with the laundry in the drum 63 is performed (S-1).

During this time, the water supply valve B46b is driven so that the dehumidified water flows in the form of a film along the peripheral wall and the bottom of the outer tub 2, and the dry air after the heat exchange is this water. After being dehumidified, it is heated again by the heater A20 (S-
2).

At the same time, water is sprayed from the nozzle 54 onto the drum 63, and a water film is also formed on the drum surface. The water film also dehumidifies the dry air. The jet water also cools the fluid balancer 65 and suppresses thermal expansion inside the balancer 65.

Further, based on the signals from the first and second temperature detecting circuits 108 and 109, the microcomputer 95 determines the temperature of the dry air TA before the heat exchange and the temperature TB after the heat exchange. The measurement is started (S-3).

At this time, since the thermistor B58 is protected by the upright walls 59 to 61 and is hardly affected by the dehumidifying water, stable temperature detection is performed.

At the end of the drying, the drying air contains almost no moisture, and the temperature TB changes. Therefore, the drying state can be known based on the difference between the temperature TA and the temperature TB (S-4). .

This drying end detecting operation is performed by the drum 63
Of the 15 seconds when the camera is rotating clockwise, the last 4 seconds (1
(S-5) to (S-
8). That is, when the drum 63 is reversed, the flow of the drying air in the outer tub 2 is disturbed, and the disturbance also affects the inside of the drying duct 18 and the thermistor A24 (the first temperature detecting circuit 10).
Variations occur in the temperature detection data according to 8), and the detection accuracy decreases. In this way, by detecting before the air is disturbed, stable temperature detection can be performed.

When the upper lid lock device 14 is released after the end of the program or during the program, the microcomputer 95 moves the input port C75 of the drum 63 to the input port B9 so that the clothes can be easily taken out. After stopping the drum 63 at the matched position (localization value), the upper lid 13 can be opened.

Hereinafter, a localization value stopping operation for stopping the drum 63 at the localization value will be described with reference to FIGS.

At the stage where the drum 63 is stopped at the localization value, the microcomputer 95 rotates the drum 63 to the left at a very low speed, and when the reed switch 91 is turned on, the motor 80 rotates in the reverse direction. When the reed switch 92 is
When N, the motor 80 is reversed again, and when the reed switch 91 is turned on, the motor 80 is reversed again. Thereafter, after the reed switch 91 is turned on for the first time, the distance between the reed switch 91 and the reed switch 92 becomes three. Reciprocate (S-1
0). Then, a third round trip time T1 (time from the lead switch 91 to the reed switch 92) and a third round trip time T2 (time from the reed switch 92 to the reed switch 91) are measured. The RAM 9
7 (S-11) (S-12).

Next, the ON state of the reed switch 91 and the reed switch 92 is checked. In this case, since the reed switch 91 is moved back and forth three times, only the reed switch 91 should be ON. In this case, a point in time when the clockwise rotation is performed for half the time T1 (S-1)
In 3), the motor 80 is stopped by DC braking (applying a half-wave to the motor) (S-15), and the drum lock device 83 is operated (S-15).

Thus, the drum 63 is positioned at the midpoint between the reed switch 91 and the reed switch 92, that is, the input port B.
It stops at the position where 9 and the input port C75 match.

It should be noted that the motor 80 is not used until the drum 63 is completely locked by the drum lock device 83.
Although DC braking is working, this DC braking does not completely stop the motor 80, and the drum 63 may rotate in small increments. Therefore, in this embodiment, if only the reed switch 92 is turned on before the drum lock device 83 is completely locked, the drum 63 is rotated counterclockwise for half the time T2 (S-16). The DC braking and the operation of the drum lock device are performed again. Hereinafter, this operation is repeated until the drum 63 is locked at the predetermined position (in most cases, the operation is ended by the first lock operation).

In this drum localization value stop control, the reed switch 91- is turned off before the measurement of the times T1 and T2.
The two reciprocations between the reed switches 92 are as follows. When the drum 63 is initially rotated until the reed switch 91 is turned on and the magnet 93 is at a position far from the reed switch 91, the drum 63 is accelerated and accurate. This is because measurement is not possible. The rotation of the drum 63 is stabilized during two reciprocations.

The reason why the time T1 and the time T2 are measured is that the rotation speed of the drum 63 is slightly different between the right rotation and the left rotation due to the bias of the clothes in the drum 63.

[0066]

[Effect of the Invention] In the drum type washing machine of the present invention, the drum is accurately stopped at a fixed position regardless of the variation in the operation timing of the reed switch and the distance between the magnet and the reed switch at the beginning of rotation. Can be.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a drum type washing and drying machine of the present invention.

FIG. 2 is a longitudinal sectional view of the same.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a sectional view taken along line BB of FIG. 2;

FIG. 5 is a sectional view taken along line CC of FIG. 2;

FIG. 6 is a perspective view of a dehumidifying water passage in an outer tank.

FIG. 7 is an exploded perspective view.

FIG. 8 is a sectional view of the same.

FIG. 9 is a plan view of an outer tank.

FIG. 10 is a plan view of a bottom portion of the outer tank.

FIG. 11 is a block circuit diagram of a control mechanism.

FIG. 12 is a configuration diagram of a microcomputer.

FIG. 13 is a temperature detection circuit diagram.

FIG. 14 is a flowchart illustrating a drying operation.

FIG. 15 is a flowchart illustrating a drying end detection operation.

FIG. 16 is a flowchart illustrating a low-position stopping operation of the drum.

[Explanation of symbols]

 2 Outer tub 9 Clothes inlet B 63 Drum 75 Clothes inlet C 79 Driving pulley (rotating body) 80 Motor 83 Drum lock device (braking means) 91, 92 Reed switch 93 Magnet 95 Microcomputer (Control Means, braking means)

Claims (1)

(57) [Scope of request for utility model registration] 1. A drum rotatably supported in an outer tub, a clothing input port provided on the upper portion of the outer tub and on the drum, a motor for driving the rotation of the drum, and the drum or the drum. A magnet fixed to a rotating body that rotates in conjunction with the magnet, and two reed switches provided at positions close to and facing the magnet and operated when the magnet approaches the magnet,
Braking means for preventing rotation of the motor, and braking means for reversing the motor each time the reed switch is actuated, thereby causing the magnet to reciprocate between the reed switches. when the inlet is met, and a structure in which the magnet is located at the midpoint of the two reed switches, further said brake means during said reciprocating movement, from the one of the reed switch is activated measuring the time until the other reed switch is actuated, then the measured after one of the reed switch is actuated
Drum type washing machine which is characterized in that the arrangement for operating the braking means when the half has elapsed of time.