JPS6053184A - 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 Technical Field The present invention relates to a pulsator portion for generating water flow in an electric washing machine.

<Prior Art> Currently, the following two methods are mainstream for generating water flow in electric washing machines. In other words, there is a method in which a large pulsator is rotated alternately left and right for a short period of time (for example, 3 seconds) to shake the water to generate an agitating water flow (hereinafter referred to as the stirring method), and a small pulsator is rotated for a certain amount of time (for example, 25 seconds) to generate an agitating water flow. This method generates an extra-vortex water flow (hereinafter referred to as the "vortex method") by rotating at high speed in one direction and then rotating in the opposite direction for a long time. Each of these methods has its advantages and disadvantages, and some of them may be inconvenient for the person doing the laundry.

That is, the stirring method does not easily damage the cloth, but it is difficult to remove stains. Also, the swirling method removes dirt easily, but it tends to damage the fabric and causes the fabric to get tangled.

<Purpose> In view of the above-mentioned points, the present invention aims to provide a washing machine that can generate both an agitated water flow and a swirling water flow.

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

First, the perspective view of the pulsator in the extended state shown in Fig. 1(,),
The same perspective view in the shortened state shown in Fig. (b), the same plan view shown in Fig. 2, and the same Fig. 3
In the same cross-sectional view of the figure, the washing machine of the present invention is provided with a water flow generating pulsator P that is expandable and retractable in the rotation axis direction A, and a fixing device B that fixes the pulsator P in an extended state and a shortened state. ing.

The pulsator P of this embodiment is made of synthetic resin, and consists of a base 1, a first elevating body 2, and a second elevating body 3. The upper part of the base 1 is cylindrical, and the inner peripheral surface is - Concave holes 1a and II+ are formed at the bottom, the lower part is shaped like a truncated cone, and three fins 1d are formed at the upper and lower parts, and the bottom part is a drive connected to a motor like a known pulsator. connected to the section. The first elevating body 2 has a cylindrical shape,
Three fins 2 (1) are formed on its outer periphery, and a protrusion 2c consisting of a plurality of elastically deformable tongue pieces is formed at its lower part, and a concave hole 2a is formed on the inner periphery. 2b is formed.The second elevating body 3 has a cylindrical shape with a lid 3e, and three fins 3d are formed on its outer peripheral surface.
A protrusion 3c consisting of a plurality of elastically deformable tongue pieces is formed at the lower part of the protrusion 3c, and a handle 3f is protruded from the upper cover 3e. The first elevating body 2 and the fins 1rJ and 2d are fitted into the base body 1 so as to be freely movable downward. Hole 1
a, 1b, but can be elastically deformed by a light push/pull force and flit away from the concave holes 1a+11]. Further, the second elevating body 3 is fitted into the first elevating body 2, and the fins 2d and 3d are fitted inside the first elevating body 2 so as to be vertically slidable, and the protrusion 3c of the second elevating body 3 Although it is engaged with the recessed holes 2a and 2b, it can be elastically deformed by a light pushing and pulling force and can be detached from the recessed holes 2a and 2b.

That is, the fixing device B has the recessed holes 1a, 1b,
2a, 2b and protrusions 2c, 3c.

Therefore, the pulsator P can be easily expanded and contracted by pulling or pushing the handle 3f on the upper part of the second elevating body 3, and is fixed and held so as not to expand or contract unexpectedly during washing. That is, when it is desired to wash with a swirling water stream, for example when the laundry is heavily soiled, the pulsator P operates in a shortened state with the first elevating body 2 and the second elevating body 3 pushed down, and when it is desired to operate with an agitated water stream, For example, when wearing thin lingerie, etc., the first elevating body 2 and the second elevating body 3 are operated in a pulled up and extended state. Note that the telescopic structure of the pulsator P is not limited to that shown in the drawings, and may be a bellows-type telescopic structure, for example.

3- Next, the operation control device for a washing machine will be explained using the block diagram of FIG. 4. 4 is a motor drive circuit section, which is composed of a pair of relays. Reference numeral 5 denotes a key power section, which is provided with a pulsator extension switch 5a, a pulsator reduction switch 51+, and a start switch 5c. 6 is a microcomputer unit, and 7 is a washing machine motor, which drives the pulsator P to rotate. Reference numerals 8 and 9 indicate contact points of relays for each direction of rotation, which are connected to the windings of the motor 7, respectively. The configuration of the microcomputer section 6 is as known, and reads instructions from the ROM 6b for programs and fixed data, and accordingly accesses the I10 section (implant 1 section, 791171 section) 6d, and controls the drive circuit section 4. make it work. Drive circuit section/
1 includes a relay in this embodiment, and contacts 8.9 are turned on and off.
FF. The timer is a counter set in the temporary memory RAM 6c.

Next, the operation of the present invention will be explained with reference to chart 70 in FIG. First, before pressing the start switch 5c, input the state of the pulsator P. That is, the extension switch 5a is pressed in the extended state shown in FIG. 4-1(,), and the shortening switch 51 is pressed in the shortened state shown in FIG. 1(b). This key input is stored as a flag in the RAM 6c. Next, press the start switch 5C. Then, water starts being supplied, and when the water level switch determines that the water supply has ended, the washing step begins.

In step 10, the flags are checked and if the water flow is weak, that is, the pulsator is extended, Ta=3, Tb=2, Tc=
15 and a constant. Here, Ta is the ON time (seconds) of the motor 7, Tb is the OFF time of the motor 7, and Tc
is the washing time (minutes). Next, in a loop of steps 12 and 13, the motor 7 is alternately rotated in the left and right directions for a short time Ta to generate an agitating water flow, and this is carried out for a washing time T
Repeat step c to finish washing.

In addition, when the water flow is strong, that is, the pulsator is shortened, Ta=
25, set constants Tb=5, Tc=10, and motor 7
is rotated alternately in the left and right directions for a long time Ta to generate a swirling water flow, and this is repeated for a washing time TC to complete the washing.

<Effects> As is clear from the explanation in section 2 below, the present invention is characterized in that the water flow generating pulsator is expandable and retractable in the direction of its rotational axis, and a fixing device is provided for fixing the pulsator in an extended state and a shortened state. It is something that exists.

Therefore, in the present invention, the expandable and retractable pulsator allows washing to be carried out rationally by selecting either swirling water flow or stirring water flow according to the quality and quantity of laundry, which is very convenient and achieves the intended purpose. can.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1(a) is a perspective view of the pulsator in an extended state, FIG. 1(b) is a perspective view of the same in a shortened state, FIG. 2 is a plan view of the same, and FIG. 4 is a block diagram of the washing machine control device, and FIG. 5 is a flowchart of the same. A: Rotation axis direction, B: Fixing device, P: Pulsator, 1:
Base body, 2: first elevating body, 3: second elevating body, la. lb, 2a, 2b: recessed hole, 2c, 3c: projection, 1d, 2
d, 3d: Fin, 1: Drive circuit section, 5: Key human power section, 6: Microcomputer section, 8, 9: Contact. 7-

Claims (1)

[Claims] A washing machine characterized in that a water flow generating pulsator is expandable and retractable in the direction of its rotation axis, and is provided with a fixing device for fixing the pulsator in an extended state and a shortened state.