JPS5921753Y2 - drum type washing machine - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a drum-type washing machine that has been improved to increase the degree of agitation of laundry.

A drum-type washing machine washes laundry by rotating a drum containing laundry and washing liquid using a motor. Conventionally, in such a drum-type washing machine, the laundry is washed by the rotating drum. The laundry is simply stirred up and down by being carried upward, dropped to the lower part where the washing liquid is, and then carried upward again. As a result, the laundry gradually hardens and simply rolls on the inner circumferential surface of the drum, resulting in the disadvantage that only the surface of the hardened laundry is washed, and almost nothing inside is washed. .

The present invention has been made to eliminate the above-mentioned conventional drawbacks, and therefore, its purpose is to eliminate the problem of laundry clumping and to obtain a good washing effect that is uniform throughout the laundry. We provide drum-type washing machines that can

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

First, in FIG. 1, reference numeral 1 is an outer box having a laundry entrance/exit 2 on the front side, and the laundry entrance/exit 2 is opened and closed by a door 3.

Reference numeral 4 denotes a tab which is disposed inside the outer box 1 and is elastically suspended by a spring 5, and has a cylindrical shape with a horizontal axis.An opening 6 formed in the front part of the tab is connected to the laundry entrance/exit 2 by means of a bellows 7. A bearing 8 is mounted on the outside of the rear surface of the bearing 8 and held down by a holding plate 9.

In addition, 10 is a water supply device for supplying water into the tub 4, and 11 is a water supply device for supplying water into the tub 4.
is a drainage device for draining water from inside the tub 4.

Reference numeral 12 designates a drum disposed within the tub 4, which also has a horizontally cylindrical shape, and has a large number of small holes 13 bored in its peripheral surface, and three baffles 14, for example, directed inward. It is installed protrudingly.

The drum 12 also has an opening 15 formed in its front surface.
faces into the bellows 7, and on the other hand, a hollow shaft 16 is protruded from the outside of the rear surface, and this is rotatably supported through the bearing 8, and the through-projecting end thereof has a large diameter. Pulley 17 is attached.

Reference numeral 18 denotes a variable speed motor suspended and supported outside and below the tab 4, and a bell 20 is stretched between the small pulley 19 directly connected to the variable speed motor and the large pulley 17.

Now, reference numeral 21 denotes a shaft rotatably inserted through the shaft 16, and the front end of this shaft projects deep inside the drum 12.

Reference numeral 22 denotes a front plate body disposed deep within the drum 12 and attached to the front end of the shaft 21, on which a protrusion 23 as a stirring auxiliary body is provided to protrude toward the front in the axial direction of the drum 12. ing.

Specifically, the protrusions 23 serving as stirring auxiliary bodies are present in two places on the left and right sides of the front surface of the front body 22 as shown in FIG. It has a tapered slope 24 which is curved upward as shown in FIG. 3, and a slope 25 which descends from each outer end to the inner end as shown in FIGS. 3 and 4.

Reference numeral 26 denotes a rear panel body attached to the rearward protruding end of the shaft 21, and has cutout portions 27 formed at two locations on the upper and lower sides thereof.

Reference numeral 28 denotes a support plate protruding from the upper part of the presser plate 9, to which a lever 29 is attached via a shaft 30 so as to be movable up and down;
At the same time, a spring 31 is inserted between the lever 29 and the support plate 28.
is stretched, and the tip of the lever 29 is fitted into and engaged with the upper notch 27 of the rear panel 26, thereby controlling the rotation of the rear panel 26 and the shaft 21. It constitutes a braking device that controls the rotation of the front panel body 22 and the projection 23, respectively.

The reference numeral 32 designates an electromagnet which serves as a release power source for the braking device and is attached to the upper rear surface of the tab 4. The tip of a wire 34 attached to the plunger 33 of this electromagnet is attached to the upper protrusion 35 of the lever 29. are doing.

Next, to describe the operation, first, before starting operation, all electrical components including the motor 18 and the electromagnet 32 are in a power-off state.
Therefore, the protrusion 23 serving as the stirring auxiliary body remains restrained by the above-described structure and maintains the two positions on the left and right as shown in FIG. 2.

In this state, when the door 3 is opened and laundry (not shown) and detergent are placed in the drum 12, and the door 3 is then closed to start operation, the water supply device 10 operates first to supply water into the tub 4. The supplied water is also accommodated in the drum 12 through the small holes 13 of the drum 12 and melts the above-mentioned detergent to form a washing liquid.

After this, the motor 18 is energized and rotated at low speed, which causes the small pulley 19, the bell l-20, the large pulley 1
7. The drum 12 is rotated through the regular path of the shaft 16, and the rotated drum 12 carries the laundry up by the baffle 14 and drops it in order from the upper part to the lower part where the washing liquid exists, and then the baffle 14 again Repeat the lifting and stirring up and down.

In addition to this, the drum 1 in the laundry being stirred as described above.
The object that reaches the inner part of 2 hits one of the stationary protrusions 23 in the process of being carried up by the baffle 14, and after hitting it, it slopes 24, 25 of the protrusion 23 as shown by the arrow in FIG. It is guided and transferred in the axial direction of the drum 12, particularly to the bottom of the center, and in the process of falling from above, it hits the other side of the protrusion 23,
Similarly, once this is hit, it is guided and transferred in the same direction as described above by the slopes 24, 25 of the protrusion 23, as shown by the arrows in FIGS. 1 and 2.

Therefore, the laundry is agitated both vertically and at the same time in the axial direction of the drum 12, which prevents the laundry from clumping like in the past, resulting in good and even washing. It is something that can be effective.

In addition, after the above-mentioned washing operation, the drainage device 11 operates to discharge the washing liquid that has turned into dirty water after washing from the drum 12 and the tub 4, and no detergent is used immediately or in addition. During the dewatering operation performed after rinsing using the same action as described above, the motor 18 is rotated at high speed, and therefore the drum 12 is also rotated at high speed, and the water coming out of the laundry is shaken out through the small holes 13 by the centrifugal force. It is discharged together with the function of the drainage device 11.

During this dehydration operation, the electromagnet 32, which has been in a power-off state, is also energized and activated, so that the protrusion 35 of the lever 29 is pulled by the plunger 33 via the wire 34, and the protrusion 35 is pulled. Lever 2 pulled
9 rotates upward around the shaft 30 and connects the tip end to the rear body 26.
It is made to escape from the notch 27.

Therefore, during the spin-drying operation, the braking of the aforementioned protrusion 23 is also released, and when the protrusion 23 released in this way is hit by the laundry, it is pushed by the laundry and damages the front body 22, shaft 21, and rear body. 26, so there is no possibility of damaging the laundry.

When the dehydration operation is completed, the electromagnet 32 is cut off after a period of time sufficient for the drum 12 to completely stop, including its inertial rotation, after the motor 18 is turned off. It will stop functioning,
The lever 29 also comes into pressure contact with the rear plate body 29 and enters a standby state in which it engages with the nearest notch 27 when the drum 12 rotates next time.

Note that during the above-described dewatering operation, the protrusion 23 is not limited to being released in a freely rotating state, but may be similar to the case where the agitating blade in a well-known general dehydrating washing machine is rotated integrally with the tub. It may be provided so as to be rotated integrally with the drum 12.

Furthermore, during the washing operation, the protrusions 23 do not necessarily need to remain completely stationary, but as long as they have a relative rotation difference with the drum 12, they may rotate a little since substantially the same effect as described above can be obtained. In short, the protrusion 23 may have any structure as long as it is prevented from rotating together with the drum 12 during a washing operation due to rotation of the drum 12.

Furthermore, the number and position of the protrusions 23 are not limited to those in the above embodiments, and furthermore, the drum type washing machine as a whole is limited to a front-opening type having a laundry entrance/exit 2 on the front side of the outer box 1. Instead, it may be of an upward-opening type that has it on the top surface.

In addition, the present invention is not limited to the embodiments described above and shown in the drawings, but can be implemented with appropriate modifications within the scope of the invention.

As explained above, the present invention performs a washing operation and a dehydration operation, and during the washing operation, a horizontal shaft-shaped drum that rotates and stores the laundry along with the washing liquid has a tapered shape that protrudes in the axial direction. A stirring auxiliary body having a slope forming a shape is provided, and a braking device is provided for controlling the rotation of the stirring auxiliary body during the washing operation and during the dewatering operation, so that the stirring auxiliary body is stirred up and down by the rotation of the drum during the washing operation. The laundry is applied to the stirring auxiliary body which is prevented from rotating together with the drum by the braking device, and is guided and transferred in the axial direction of the drum by the slope of the stirring auxiliary body, and during spin-driving operation, the stirring auxiliary body The feature is that the body is free to rotate or rotates integrally with the drum, which allows the laundry to be agitated without clumping and evenly distributed throughout the laundry. It has an excellent practical effect in that it is possible to obtain a good washing effect without causing any damage to the laundry, and it is also possible to carry out a sufficient dehydration operation without damaging the laundry.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which Fig. 1 is an overall longitudinal sectional side view, Fig. 2 is a sectional view taken along the line III in Fig. 1,
Figure 3 is a side view in the direction of arrow I11 in Figure 2, and Figure 4 is a side view of the
FIG. 5 is a sectional view taken along the line IV-IV in the figure, and a perspective view of a mechanism for preventing rotation of the stirring auxiliary body. In the figure, 12 is a drum, 16 is a shaft, 21 is a shaft, 22 is a front plate body, 23 is a protrusion (stirring auxiliary body), 24 and 25 are slopes, 26 is a rear plate body, 27 is a notch, and 29 is a lever, 31
is a spring, and 32 is an electromagnet.

Claims (1)

[Scope of utility model registration request] A stirring auxiliary body that performs washing operation and dewatering operation, and has a tapered slope protruding in the axial direction inside a horizontal shaft-shaped drum that rotates while storing laundry together with washing liquid during the washing operation. and a braking device for controlling the rotation of the agitation auxiliary body during the washing operation and the dehydration operation, and the braking device controls the laundry that is agitated up and down by the rotation of the drum during the washing operation. The stirring auxiliary body is applied to a stirring auxiliary body that is prevented from rotating together with the drum, and is guided and transferred in the axial direction of the drum by the slope of the stirring auxiliary body, so that the stirring auxiliary body is allowed to rotate freely during dewatering operation. Or a drum-type washing machine that rotates integrally with the drum.