JPH04150898A - Drum type washing machine - Google Patents

Abstract

PURPOSE:To exert the balance effect of a balancer to the maximum extend by a method wherein a drum is formed into a cylindrical shape with a bottom, and its wall has a draft expanding from an end toward the other end, and an annular balancer is provided at each end. CONSTITUTION:A drum 3 is formed of plastics, and consists of a cylindrical shell 9 with a bottom plate, a first balancer 10 provided at the open end of the sell 9, and an end plate 11 fixed on the end of the first balancer 10. The shell 9 has a draft of about 1.5 degrees and the diameter increases gradually from the closed end toward the open end. The first balancer 10 is of a hollow annular tube filled with brine, and resistant elements are arranged inside the tube at regular distances to restrict the brain from flowing. Recessed parts 12 are provided along the inner circumferential face of the balancer 10 and also serve as resistant elements. The outer circumference of the first balancer 10 is fitted in the open end of the shell 9 and fixed by screws.

Description

[Detailed description of the invention] (b) Industrial application field The present invention relates to a drum type washing machine.

(B) Conventional technology As a conventional example, an outer tank is supported within a frame, a horizontal shaft type drum is rotatably supported within the outer tank, and by rotating the drum, A washing machine for washing laundry in which an annular balancer is disposed on the rotating shaft of the drum is disclosed in Japanese Patent Application Laid-open No. 54-26071 (
D06F37/22).

(c) Problems to be solved by the invention In the conventional example, the balance performance of the balancer differs depending on whether the laundry is near or far from the balancer in the drum, and a stable balance effect is not achieved. I have a problem that I can't do.

The present invention relates to improvements in drum-type washing machines and is intended to solve these problems.

(d) Means for Solving the Problems The present invention supports an outer tank within a frame, rotatably supports a horizontal axis type resin molded drum within the outer tank, and rotates the drum. , a drum-type washing machine that performs washing operations such as washing and dehydration, in which the drum is formed into a cylindrical shape with a bottom, and a mold-cutting slope that expands from one end surface to the other end surface is provided on the peripheral wall thereof. Further, annular balancers are provided at both ends of the drum.

(E) Effect: The laundry inside the drum is moved by the slope of the drum circumference.
It is directed to move close to the balancer, and the balancer's balancing effect is maximized.

Moreover, the balancer on the opposite side covers the laundry that could not be moved completely.

(f) Example Embodiments of the present invention will be described based on the drawings.

In Fig. 1, 1 is a sheet metal frame, 2 is an outer tank that is elastically suspended and supported within this frame 1, and 3 is a horizontal shaft type drum that is rotatably supported within this outer tank 2. It has many through holes 4 around it. 5 is a top lid for opening and closing the clothing slot on the top surface of the frame 1; 6;
7 is a washing motor and a dewatering motor connected to the drum 3 via a pulley and a belt, the washing motor 6 reverses the drum 3 at low speed during washing, and the dewatering motor 7 rotates the drum 3 during washing The drum 3 is rotated in one direction at high speed. 8 is an input key device.

In FIGS. 2 and 3, the drum 3 is made of synthetic resin and includes a bottomed cylindrical body 9, a first balancer 10 attached to the open end of the body 9, and a first balancer 10 attached to the open end of the body 9. An end plate 11 is fixed to the end surface of the first balancer 10.

The body portion 9 is provided with a mold removal slope of about 1.5 degrees during molding, and its diameter gradually increases from the closed end to the open end.

The first balancer 10 is a hollow annular body filled with a predetermined amount of salt water, and resistors are provided inside at predetermined intervals to regulate the flow of salt water. 12 are recesses formed along the inner circumferential surface of the first balancer 10, and the recesses 12 also serve as resistors. The outer periphery of the first balancer 10 is fitted inside the open end of the body portion 9 and fixed with screws.

Reference numeral 13 designates a second balancer formed at the closed end of the body portion 9, and an annular groove 1 formed integrally with the body portion 9 when molding the body portion 9.
The opening surface of 4 is covered with an annular lid body 15. Also, when shielding, the first balancer 1
Similarly to 0, a predetermined amount of salt water is sealed. 16a... is a resistance plate formed integrally with the body 9 in the annular groove 14, and like the resistance plate, is for regulating the flow of salt water. Similarly, 16b... is a resistance plate formed on the back surface of the lid 15.

Incidentally, reference numerals 17 and 18 are shafts provided at the closed end of the end plate 11 and the body 9, and are used to pivotally support the drum 3 in the outer tank 2.

When the drum 3 rotates, the laundry in the drum 3 moves along the inclination of the body 9 to the first balancer 1.
It is directed to move near 0, and the balancing effect by the balancer 10 is effectively exhibited.

Further, for the laundry that has not been moved, the second balancer 13 exerts a balancing effect, and the balance performance is generally good.

Incidentally, since the second balancer 13 is auxiliary to the first balancer 10, it is not necessary to make the diameter larger than the diameter of the closed end of the body section 9.

(g) Effects of the Invention In the drum-type washing machine of the present invention, the balance effect by the balancer is effectively exerted, so that the drum rotates smoothly.

Furthermore, by making the drum a resin-molded product, the weight of the main body of the device can be reduced, making it suitable for general household use.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the washing machine of the present invention, FIG. 2 is a side sectional view of the drum, and FIG. 3 is an exploded perspective view. 1...Frame, 2...Outer tank, 3...Drum, lO...
1st balancer, 13... 2nd balancer. Applicant: Kyushu Electric Power Co., Inc. (1 other person) Agent: Patent attorney Takuji Nishino (2 others)

Claims (1)

[Claims] (1) An outer tank is supported within a frame, a horizontal shaft type resin molded drum is rotatably supported within the outer tank, and washing operations such as washing and dehydration are performed by rotating the drum. The drum is formed into a cylindrical shape with a bottom, and the peripheral wall thereof is provided with a mold-cutting slope that expands from one end surface side to the other end surface side, and further, annular shapes are provided at both ends of the drum, respectively. A drum-type washing machine characterized by being equipped with a balancer.