JPS63311991A - Drum type washing machine - 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 [Industrial Application Field] The present invention relates to a drum-type washing machine, and more particularly, the present invention has a laundry inlet/outlet in the upper surface of the machine body and in the outer circumferential body of the drum. Drum-type laundry where laundry is placed into or taken out of the drum by aligning the laundry intake port provided on the outer body of the machine with the laundry intake port located on the top of the machine. In particular, the present invention relates to a drum fixed position stop control device that stops the drum at a fixed position.

[Conventional technology]

A drum-type washing machine has a drum that serves as a washing tub that is pivoted horizontally, and the laundry is placed in the drum and the washing machine rotates at 40 to 60 rpm.
The drum rotates at a rotational speed of , and by using multiple protrusions (lifters) provided on the inner peripheral surface of the drum, the laundry stored in the drum is lifted up and then dropped, and this operation is repeated. , to wash the laundry in the drum.

The prior art related to drum type washing machines is described in, for example, Japanese Patent Laid-Open No. 156197/1983.

[Intermediate point that the invention attempts to solve]

However, in the drum type washing machine having the above configuration,
As mentioned above, the laundry inlet/outlet on the drum side is provided on the outer periphery of the drum, so if the drum fixed position stop control device is not added, when the washing machine stops operating, water will be removed. Due to the inertia of the drum containing the laundry, the stopping position of the laundry inlet port located on the drum side is not constant.

In such a case, the user rotates the drum by hand, aligns the laundry intake port on the drum side with the laundry intake port on the machine body, and takes out the laundry from the drum.
It is necessary to put the next item of laundry into the drum, which makes the washing process complicated.

In order to eliminate the complexity of the washing work described above, when the washing machine is stopped, a laundry inlet/outlet provided on the drum side,
A so-called drum fixed position stop control device has previously been proposed, which aligns the laundry inlet/outlet provided on the machine body side with the drum fixed position stop control device.

One of them is to combine a drum stop position detection means that takes into account the inertia of the drum when the washing machine stops operating and sets the stop timing of the drum in advance, and a drum control means using a band brake. By increasing the size of the laundry intake port on the drum side, when the washing machine is stopped, laundry located on the drum side can be removed from the laundry intake port on the machine body side. There is a drum-type washing machine that is designed to absorb stoppage errors at the intake/outlet.

However, when the washing machine stops operating, the inertia is the amount of load applied to the drum (laundry weight).

Furthermore, it changes greatly depending on the degree of unevenness of the laundry in the drum, and even though the amount of load applied to the drum is always constant, there are cases where the amount of input load is extremely large or small. Now, we have to take into account that the stopping position of the laundry intake port located on the drum side varies considerably compared to the laundry intake port on the machine side.

The present invention has been made in consideration of the above points, and includes:
The purpose of this is to ensure that the laundry inlet on the drum side always aligns precisely with the laundry inlet on the machine, even when the input load to the drum is extremely high or low. To provide an improved drum-type washing machine which is easy to use and can be stopped at any time, and allows laundry to be taken in and out of the drum easily at any time.

[Means for solving problems]

The purpose is to pivotally support the side surface of the drum constituting the washing tub,
In a drum-type washing machine having a laundry inlet/outlet on the upper surface of the machine body, a disc having a stopper recess is provided at one end of the drum shaft supporting the drum, and a disc is provided on the outer circumferential body of the drum. By providing an auxiliary switch that turns off only when the laundry intake port located on the top of the machine matches the laundry intake port located on the top surface of the machine, the auxiliary switch will not turn off even if the main switch is turned off. This is achieved by arranging that when the auxiliary switch is turned off, the pin enters the stopper recess and fixes the drum without stopping the motor when the auxiliary switch is not turned off.

[Effect]

According to the present invention having the above configuration.

After the main switch is turned off to stop the drum, the auxiliary switch continues to rotate the motor so that the laundry intake port on the drum side matches the laundry intake port on the machine side. When the laundry intake port matches the laundry intake port on the machine side, the auxiliary switch turns off and stops the rotation of the motor, and at the same time, a disc directly connected to the drum shaft, that is, a recess for a stopper in the disc, is turned off. A pin is inserted to fix the movement of the drum. Therefore, no matter what state the main switch is turned off, the laundry intake port on the drum side will surely stop at a predetermined position above, coinciding with the laundry intake port on the machine body side.

〔Example〕

Hereinafter, the present invention will be explained based on an actual travel example shown in FIGS. 1 to 4. FIG. 1 is a longitudinal side view showing the overall structure of a drum-type washing machine, and FIG. 2 is a main part of the present invention. A view from arrow A in FIG. 1 showing details of the drum fixed position stop control bag 1,
The figure is an electrical circuit diagram of the drum fixed position stop control device shown in Figure 2, and is a longitudinal sectional front view of the central part of Figures □8 and □.In Figure 1, 1 is the control knob, and 2 is the top surface. The attached lid, 3', is a lid attached to the laundry intake port 3 located on the outer periphery 1111 of the drum 6, and 4' is the lid, 7a, attached to the laundry intake port 4 on the outer M5.

7b and 7c are lifters provided on the inner wall surface of the drum 6, and during washing, the lifters 7a to 7c are used to once lift up the laundry stored in the drum 6 and then drop it, and repeat this operation. As a result, the laundry in the drum 6 is washed. Reference numeral 8 denotes a hole at the bottom of the outer MI 5 for introducing the washing liquid into the drum 6, and this hole 8 also serves as a dehydration hole in a washing machine equipped with a dehydration process. 9 is one of the two shafts supporting the drum 6, and the shaft 9 has a drum pulley 10t&
The motor 11 includes a motor pulley 12. The drum 6 is rotated via the belt 13. 14 is a drain valve, 15a,
15b is a leg that supports the outer frame 26 of the washing machine; 16a and 16b are legs that elastically support the outer tub 5; 17 is a shaft that supports the drum 6 together with the shaft 9; the shaft 17 has a drum fixed position stop control device; A disk 18 forming a part of is attached. Reference numeral 19 denotes a magnetic sensor, and the magnetic sensor 19 faces the horseshoe-shaped magnetic body 24 provided on the disc 18, as shown in FIG. Then, the auxiliary switch 30 made of semiconductor or the like is turned off. In addition, the notch 2 of the horseshoe-shaped magnetic body 24 described above
5 is arranged so as to face the magnetic sensor 19 when the drum 6 and the intake ports 3 and 4 of the outer tank 5 are aligned.

20 is 'Fll a stone.

The electromagnet 20 has a plunger 21 and a guide portion 2
It has a pin 23 guided by 2. Reference numeral 27 in FIG. 2 indicates four stopper parts provided on the disc 18. Further, 28 in FIG. 3 is an electric resistor, and when the main switch 31 is off, the electric resistor 28 controls the current value flowing through the circuit including the auxiliary switch 30 to be low, and reduces the speed of the motor 11.

Reference numeral 29 indicates an amplifier that amplifies the signal 35 sent from the magnetic sensor 19.

In the above configuration, when the main switch 31 is turned on after filling the outer tub 5 and the bottom of the drum 6 with washing liquid and putting laundry (not shown) into the drum 6, the drum 6 is powered by the motor 11. Then, the laundry is rotated in one direction at low speed or forward and reverse every few rotations, and the laundry is transferred to the lifter 7a,
After scraping it up with steps 7b and 7c, it is dropped, and this operation is repeated.

Then, when the main switch 31 is turned off manually or by a timer due to replenishment of laundry or completion of washing, the power to the electromagnet 20 is also cut off, and the plunger 21 and pin 23 fall along the guide portion 22. At this time, if the laundry inlet port 3 of the drum 6 does not face the laundry inlet port 4 of the outer tub 5 and is, for example, oriented sideways, the pin 23 comes into contact with the outer periphery of the disc 18, On the other hand, the auxiliary switch 30 is in an on state because the magnetic sensor 19 faces the magnetic body 24, and therefore the current continues to be supplied to the motor 11 via the electric resistor 28.

Thereafter, the motor 11 continues to rotate the drum 6 gently with reduced torque until the magnetic sensor 19 faces the notch 25 of the horseshoe-shaped magnetic body 24.

When the magnetic sensor 19 reaches the notch 25 of the horseshoe-shaped magnetic body 24, the auxiliary switch 30 is turned off and the rotation of the motor 11 is stopped. is inserted to fix the stiffness of the drum 6, and as shown in FIG. 4, the drum 6 and the laundry intake opening 3.degree.

FIG. 5 is a perspective view of the main part (drum stop position detector end) showing another embodiment of the present invention.
In the embodiment shown in the figure, a case is illustrated in which the magnetic sensor 19 and the magnetic body 24 are combined as the drum stop position detection mechanism, but instead of this, as shown in FIG. By combining the hole 32, the light emitting element 33, and the light receiving element 34, when the main switch 31 is off, the hole 32 is detected and the auxiliary switch 30 is turned on, and then the same process as in the previous embodiment is performed. The laundry intake port 3 of the drum 6 may be aligned with the laundry intake port 4 of the outer tub 5 by operating the drum fixed position stop control device.

In the illustrated embodiment, the washing tub and the dehydration tub are combined into one
Although the case is illustrated in which two drums 6 are used for both purposes, the present invention is not limited to this, and can also be applied to a drum-type washing machine in which a washing tub and a dehydrating tub are separate, and furthermore, a single drum for washing. Of course, it can also be applied to a drum-type washing machine that continuously performs the steps from drying to drying.

〔Effect of the invention〕

The present invention is as described above, and as is clear from the explanation of the illustrated embodiments, according to the present invention, even if the amount of load input to the drum is extremely large or small, the laundry on the machine side can be The laundry loading/unloading port on the drum side can always be precisely aligned with the loading opening and stopped, making it easy to load and unload laundry from the drum at all times, making it easy to use. . An improved drum type washing machine can be obtained.

[Brief explanation of the drawing]

Figures 1 to 4 show one embodiment of the present invention, Figure 1 is a longitudinal side view showing the overall configuration of a drum type washing machine, and Figure 2 is a drum fixed position stop control which is the main part of the present invention. The table is a view in the direction of arrow A in FIG. 1 showing the details of the above, FIG. 3 is an electric circuit diagram of the drum fixed position stop control device shown in FIG. 2, and FIG. 4 is a vertical sectional front view of the central part of FIG. Figure 5 shows the main part (
FIG. 3 is a perspective view of a drum stop position detection mechanism. 3... Laundry intake port of drum 6, 4... Laundry intake port of outer tub 5, 5-... Outer tub, 6... Drum, 11
...Motor, 17...Shaft, 18...Disc, 19.
... Magnetic sensor, 20 ... Electromagnet, 21 ... Plunger, 23 ... Pin, 24 ... Horseshoe-shaped magnetic body, 25
... Notch, 27... Recess for stopper, 30...
- Auxiliary switch, 31... Main switch.

Claims (1)

[Claims] 1. In a drum-type washing machine that pivotally supports the side of the drum constituting the washing tub and has a laundry inlet/outlet on the upper surface of the machine, a recess for a stopper is provided at one end of the drum shaft that supports the drum. In addition, an auxiliary switch is provided that turns off only when the laundry intake port provided on the outer circumferential body of the drum and the laundry intake port located on the top surface of the machine body coincide with each other. Accordingly, when the auxiliary switch is not turned off even when the main switch is turned off, the motor is not stopped, and when the auxiliary switch is turned off, the pin enters the stopper recess and fixes the drum. A drum-type washing machine featuring