JP2680185B2 - Washing machine - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing machine provided with a stainless steel washing and dehydrating tank (basket), and more particularly to a structure for mounting a balance ring on a basket.

[Conventional technology]

As described in Japanese Patent Publication No. 57-203492, most conventional washing tanks are made of plastic, and stainless steel tanks are only used for drum washing these days.

[Problems to be solved by the invention]

The plastic washing tank is required to have an increased strength so that it can withstand high rotation during dehydration. Therefore, the washing tank is thickened or ribs are formed around the outer peripheral surface. As a result, when a washing machine is used for many years, detergent residue or mold is generated between the ribs stretched around the outer peripheral surface, and re-attaches to clothes. Further, since the wall thickness is increased or the ribs increase the actual wall thickness, there is a problem that the internal volume is reduced accordingly.

An object of the present invention is to eliminate the drawbacks of the prior art as described above and to provide a washing machine having a clean washing tank corresponding to a large capacity.

[Means for solving the problem]

The present invention provides a washing / dehydrating tank, a stirring blade rotatably provided at the center of the bottom of the washing / dehydrating tank, a motor for rotating the washing / dehydrating tank or the stirring blade, and an upper portion of the washing / dehydrating tank. In a washing machine having a balance ring provided, the washing and dehydrating tank is tightened and coupled to a cylindrical body portion, a dish-shaped bottom plate portion which is tightly coupled to a lower portion of the body portion, and an upper end of the body portion. The upper ring portion is formed of a stainless steel plate, and the upper ring portion is formed on the outer peripheral flange portion and the outer periphery of the outer peripheral flange portion. Of the outer peripheral flange portion, a tubular portion that rises from the inner diameter side of the outer peripheral flange portion, and a flange-like mounting that extends horizontally in the inner diameter direction from the upper side of the tubular portion via an arc portion. Part and this mounting part A plurality of convex portions that have a tubular inner tubular portion that rises higher than the tubular portion from the radial side, and that are formed so as to be pushed upward on the mounting portion of the upper ring portion and that are arranged at intervals. A threaded hole is formed to penetrate the convex portion, a concave portion into which the convex portion of the upper ring portion fits is formed in the bottom portion of the balance ring, and the convex portion of the balance ring is formed on the convex portion of the upper ring portion. Place the balance ring on the upper ring portion so that the inner periphery of the balance ring fits on the outer periphery of the inner cylindrical portion of the upper ring portion while the recess fits,
Further, the head of the screw screwed into the balance ring from the screw through hole is dropped into the recess.

[Action]

Unlike the plastic washing tank, the stainless steel basket consisting of the upper ring part that forms the upper part, the bottom plate part that forms the bottom part, and the cylindrical body part has sufficient strength unlike the plastic washing tank, so there is a rib on the outer peripheral surface. It does not need to be stretched, it is smooth. Therefore, there is no element where detergent residue or the like adheres and accumulates. Also, since the plate thickness is thin, sufficient strength can be obtained,
As a result, the internal volume can be increased and it is possible to cope with the increase in capacity.

〔Example〕

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. First
In the figure, reference numeral 1 denotes an outer frame which is formed by pressing a steel plate and has a hanging rod receiver 1a and a foot 1b. A top cover 2 surrounds the upper surface of the outer frame 1, and has a lid 3, a back panel 3a, and a control unit 20. Reference numeral 4 denotes an outer tub for storing washing water.
An air reservoir 4a is connected to the air hose 5 and the water level sensor 6, and is configured to control the water supplied from the water supply device 24 to the water level by opening the water supply valve 23 in the tank. 4b
With the hanging rod receiver, the hanging rod 7 is passed through and the spring 9 is held by the hook portion 7a so as to hold the spring 9.
The spring bearing 10 and the hook portion 7a are surrounded by the sliding cylinder 7c, and the upper portion of the suspension rod holder 1a does not position the hanging rod holder 8 for rotating and holding. Reference numeral 14 denotes a lower base, which holds a drive unit 18 having a main motor 15, a reduction gear, a brake, a clutch 4 unit 18d, etc., and is engaged with the outer tub 11. A motor shaft 15a is engaged with the pulley 16 and transmits the rotation of the motor to the pulley 18c on the drive unit 18 side by a vector 17. Reference numeral 18a is a rotary blade shaft protruding from the drive unit, and 18b is a washing tub shaft. Reference numeral 19 is a seal portion, and 21 is a drainage light, which is a portion for draining water with a drainage valve 21a and a drainage hose 22. 25 supplies tap water with a water supply hose.

Reference numeral 30 denotes a stainless steel basket, and as shown in FIG. 2, an upper ring portion 31 to which the balance ring 40 is attached, convex portions 32a and 32b for enhancing the cleaning effect, and a tubular portion 32 having dehydration holes 32c on the inner peripheral surface. A flange 42 for connecting the basket 30 to the clutch portion 18d has a three-part structure of the bottom plate portion 33 attached to the bottom surface. More specifically, the body 32
Is a cylindrical shape that forms the body portion 32 of the basket 30, and a large number of round-shaped convex portions 32a and oval-shaped convex portions 32b are formed on the circumferential surface, alternately or every two or three protruding portions. ing. Further, a large number of dehydration holes (burring holes) 32 are provided between the protrusions on the inner peripheral surface.
c is pushed out and opened. The body 32 itself is 1
After rolling the stainless steel plate with a roll machine, fold and crimp
It becomes a cylindrical shape by A32d.

Also, as shown in FIGS. 3 and 4, the bottom plate portion 33 is a basket.
It has the shape of a washbasin forming the bottom of 30, and has a hole 30a in the middle bottom. Further, a flange 42 for stacking the basket 30 on the clutch portion 18d is attached and fixed to the star-shaped lowermost surface 33a of the bottom plate portion 33. The fixing method is
It is screwed with a pierce nut 33b which is previously driven into the bottom surface of the bottom plate portion 33. In order to prevent the clothes from rotating together and the washing effect from being lowered when the stirring blades 13 rotate in the forward and reverse directions, the outer peripheral bottom surface is provided with several extrusion protrusions 30c inside.

Further, as shown in FIGS. 5, 6, and 7, the upper ring portion 31 is formed on the outer peripheral flange portion 31a and the outer periphery of the outer peripheral flange portion 31a, and is folded at the upper end of the body portion 32. A tightening joint portion 31b to be tightened and joined, a tubular cylinder portion 31c rising from the inner diameter side of the outer peripheral flange portion 31a, and an arcuate portion 31 from the upper side of the cylinder portion 31c
It has a flange-shaped mounting portion 31e that extends horizontally in the inner diameter direction via d, and a cylindrical inner cylindrical portion 31f that rises higher than the cylindrical portion 31c from the inner diameter side of the mounting portion 31e. The balance ring 40 is attached to the upper ring portion 31 having such a shape. The bottom surface of the balance ring 40 contacts the mounting portion 31e, and the inner circumference of the balance ring 40 is located inside the inner cylindrical portion 31f.
The balance ring 40 is attached to the upper ring portion 31 so as to fit into

Further, the mounting portion 31e of the upper ring portion 31 is provided with a convex portion 31g formed so as to be pushed upward. This convex part 3
A plurality of 1g are provided at equal intervals. A screw hole is formed in the convex portion 31g.

On the bottom surface of the balance ring 40, a concave portion 40a is formed at a portion facing the convex portion 31g. Convex portion in this concave portion 40a
31g is fitted and serves as a detent against the upper ring portion 31 of the balance ring 40. Further, by this fitting, the alignment of the balance ring with respect to the upper ring portion 31 is automatically determined, so that the work of mounting the balance ring is easy, and the position of the screw hole of the balance ring 40 and the screw through hole of the upper ring portion 31 is easy. Is also automatically determined. Also, the head of the screw that tightens the balance ring 40 to the upper ring portion 31 is a recess in the upper ring portion.
It will fall to 40a. Therefore, the head of the screw does not protrude from the lower surface of the placing portion 31e, and the item to be washed is not easily damaged.

As described above, since the upper ring portion 31 covers the inner peripheral surface half of the balance ring 40, when the lid 3 is opened, the balance ring 30 is conspicuous and further enhances the sense of quality.

However, this is only one embodiment, and it is conceivable that the inner peripheral surface of the balance ring 40 is completely covered as shown in FIG. In this case, since the balance ring 40 is wrapped with the upper ring portion 31, it is not necessary to fix the balance ring 40 with screws.

〔The invention's effect〕

As described above, the present invention provides a washing / dehydrating tank, a stirring blade rotatably provided at the center of the bottom of the washing / dehydrating tank, a motor for rotating the washing / dehydrating tank or stirring blade, and the washing tank. In a washing machine having a balance ring provided on the upper part of the combined dehydration tank, the washing and dehydration tank is provided with a cylindrical body portion, a dish-shaped bottom plate portion tightened and coupled to the lower portion of the body portion, and a body portion of the body portion. The upper ring portion is tightened and coupled to the upper end, and the body portion, the bottom plate portion and the upper ring portion are formed of a stainless steel plate, and the upper ring portion is formed on the outer peripheral flange portion and the outer periphery of the outer peripheral flange portion. And a tightening connection that is connected to the upper end of the body,
A cylindrical tubular portion that rises from the inner diameter side of the outer peripheral flange portion, a flange-shaped mounting portion that horizontally extends in the radial direction from the upper side of the cylindrical portion through an arc portion, and the inner diameter of the mounting portion. And a tubular inner tubular portion that rises higher than the tubular portion from the side,
The mounting portion of the upper ring portion is provided with a plurality of convex portions that are formed to be pushed out upward and are arranged at intervals,
A threaded hole is formed through the convex portion, a concave portion into which the convex portion of the upper ring portion is fitted is formed in the bottom portion of the balance ring, and a concave portion of the balance ring is fitted into the convex portion of the upper ring portion. The balance ring is placed on the upper ring portion so that the inner circumference of the balance ring fits on the inner cylinder outer periphery of the upper ring portion, and the screw head screwed into the balance ring from the screw through hole is described above. A washing machine characterized by being configured to be pushed into a recess.

 This configuration has the following advantages.

1. Unlike the plastic washers that have complicated reinforcing ribs on the outer circumference, the washing and dehydrating tank made of stainless steel sheet does not have detergent residue or mold on the outer circumference.

2.The body part made of stainless steel plate that constitutes the washing and dewatering tank is tightly connected to the upper ring part made of stainless steel plate, and the upper ring part is the outer peripheral flange part and this outer peripheral flange part. A tightening connection that is formed on the outer circumference and that is connected to the upper end of the body section, a cylindrical tube section that rises from the inner diameter side of the outer peripheral flange section, and a horizontal direction in the inner diameter direction from the upper side of this tube section through an arc section. Since it has a flange-shaped mounting portion extending to, and a tubular inner tubular portion that rises higher than the tubular portion from the inner diameter side of the mounting portion,
This is a washing / dehydrating tank which is significantly more durable than a plastic balance ring directly attached to the upper end of the body without the upper ring portion having the above-described shape.
Suitable for high-speed dehydration rotation.

3. Since the balance ring is attached by fitting the convex part of the upper ring part and the concave part formed in the balance ring, a large force is not applied to the screw holding the balance ring during spin-drying.

4.Because the screw holding the balance ring is placed inside the mounting part of the upper ring part, the appearance of the screw is not visible, and the head of the screw falls into the concave part of the mounting part. Since it does not protrude from the lower surface of the placing portion, the item to be washed is not easily damaged.

[Brief description of the drawings]

1 is a vertical sectional view of an embodiment of the present invention, FIG. 2 is a vertical sectional view of an essential portion of the embodiment of the present invention, and FIG. 3 is a plan view of a bottom plate portion of the present invention. Is a vertical cross-sectional view of the bottom plate portion of the present invention,
FIG. 6 is a plan view of the upper ring portion of the present invention, FIG. 6 is a vertical sectional view of the upper ring portion of the present invention, FIG. 7 is a sectional view of a balance ring mounting portion of an embodiment of the present invention, and FIG. FIG. 3 is a sectional view of a balance ring mounting portion according to an embodiment of the present invention. 30 …… Basket, 31 …… Upper ring part, 32 …… Body part, 32
a ... Round convex, 32b ... Oval convex, 33 ... Bottom plate, 40 ...
… Balance ring.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP 61-249499 (JP, A) JP 59-186597 (JP, A) Actual development Sho 49-35170 (JP, U)

Claims (1)

(57) [Claims] 1. A washing / dehydrating tank, a stirring blade rotatably provided at the center of the bottom of this washing / dehydrating tank, a motor for rotating the washing / dehydrating tank or a stirring blade, and an upper part of the washing / dehydrating tank. In a washing machine having a balance ring provided in, the washing and dewatering tank, a cylindrical body portion, a dish-shaped bottom plate portion that is tightened and coupled to the lower portion of the body portion, and is tightened and coupled to the upper end of the body portion. The upper ring portion is formed of a stainless steel plate, and the upper ring portion is formed on the outer peripheral flange portion and the outer periphery of the outer peripheral flange portion, and Tightening connection that is connected to the upper end of the cylindrical portion, a cylindrical tubular portion that rises from the inner diameter side of the outer peripheral flange portion, and a flange-shaped mounting that extends horizontally in the inner diameter direction from the upper side of the tubular portion through an arc portion. Table and this table A plurality of cylindrical inner tubular portions that rise higher than the tubular portion from the inner diameter side of the upper ring portion, are formed so as to be pushed upward in the mounting portion of the upper ring portion, and are arranged at intervals. Provide a convex part,
A threaded hole penetrating this convex portion is formed, a concave portion into which the convex portion of the upper ring portion is fitted is formed in the bottom portion of the balance ring, and a concave portion of the balance ring is fitted into the convex portion of the upper ring portion. The balance ring is placed on the upper ring portion so that the inner circumference of the balance ring fits on the inner cylinder outer periphery of the upper ring portion, and the screw head screwed into the balance ring from the screw through hole is described above. A washing machine characterized by being configured to be dropped into a recess.