JP2006061355A - Drum type washing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a highly reliable drum type washing machine capable of being inexpensively manufactured by forming a water tub of resin, and durable against the unbalanced state of the laundry in the dewatering process. <P>SOLUTION: The washing machine comprises the resin water tub 2 enclosing a rotary drum 3 inside, a bearing part 4 attached to the back face of the water tub 2 for supporting a drum driving motor 5 to drive the rotary drum 3 and pivoting the rotary drum 3, a pedestal part 11 attached to the lower part of the water tub 2 to which one end of a vibration isolating dumper 7 for reducing the vibration of the water tub 2 is fixed, and a reinforcing member 12 one end of which is connected to the bearing part 4 and the other end of which is connected to the pedestal part 11. With such structure, the water tub 2, durable against the unbalanced state of the laundry in the dewatering process, can be manufactured with an inexpensive resin material even if the structure is complicated. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a drum-type washing machine that performs a washing, rinsing, and dewatering process by rotationally driving a rotating drum containing laundry.

Conventionally, this type of drum-type washing machine is disposed in a water tub with a rotating drum whose axis of rotation is inclined in a horizontal direction or a horizontal direction. Therefore, the laundry is stored in the rotating drum and rotated. In this case, the laundry and water tend to be biased downward, and vibration is likely to occur. In particular, when carrying out the dehydration process by rotating the rotating drum at a high speed, if the laundry in the rotating drum is gathered at a biased position, that is, if the laundry is in an unbalanced state, the water tank that houses the rotating drum is greatly affected. Vibration occurs. In order to suppress such vibration associated with the rotation of the rotating drum, a water tank is supported by an anti-vibration damper having a large buffering force to reduce the vibration amplitude (see, for example, Patent Document 1).
JP-A-6-327892

  However, in such a conventional drum-type washing machine, the water tub containing the rotating drum has a bearing, a drum drive motor, and the like that support the rotating shaft of the rotating drum attached to the rear of the water tub. Since the anti-vibration damper was attached, the water tank itself required rigidity and strength. Therefore, the water tank is usually made of stainless steel to ensure strength.

  However, it is necessary to attach various parts to the aquarium, such as a packing member covering the opening, a drainage hose, a water supply hose, etc., but if it is made of a metal such as stainless steel, a complicated structure cannot be formed. It was necessary to create parts for attaching various parts separately, and then to attach the parts by welding them to the water tank, which was very time-consuming to manufacture.

  In order to solve the above problem, it is conceivable to form a water tank with a resin. However, the resin is generally low in strength, and in order to ensure the strength, is a strong and very expensive resin used? Or, it was necessary to make the structure very thick, and it was difficult to put it into practical use as a product.

  In the case of resin, the rigidity of the resin is highly dependent on temperature.In particular, when using hot water for washing, both rigidity and strength are greatly reduced compared to using at room temperature. When dehydration with a large unbalanced load was performed, there was a problem that a large load was applied to the water tank and the water tank was damaged.

  The present invention solves the above-mentioned conventional problems, and is a drum type washing machine that can be manufactured at low cost by forming a water tank with resin and can withstand the unbalanced state of the laundry during the dehydration process. The purpose is to provide.

  In order to achieve the above object, the present invention provides a rotating drum having a rotating shaft in a substantially horizontal direction or a substantially inclined direction, a resin water tank containing the rotating drum, a drum drive motor for driving the rotating drum, A bearing portion that is attached to the rear surface of the water tank and supports the drum drive motor and supports the rotating drum, a vibration damping damper that reduces vibration of the water tank, and a vibration damping damper that is attached to the lower part of the water tank. A drum-type washing machine provided with a pedestal portion fixed at one end, and provided with a reinforcing member between the bearing portion and the pedestal portion, one end connected to the bearing portion and the other end connected to the pedestal portion. .

  As a result, the water tank can be easily formed in a complicated shape, so that it can be manufactured at a low cost, and the bearing portion and the pedestal portion can be reliably connected by the reinforcing member, so that the laundry is unbalanced during the dehydration process. Since the load phase difference between the bearing portion and the pedestal portion generated at that time can be suppressed, it is possible to withstand the unbalanced state of the laundry during the dehydration process.

  The drum type washing machine of the present invention realizes a highly reliable drum type washing machine that can be manufactured at low cost by forming the water tub with resin and can withstand the unbalanced state of the laundry during the dehydration process. can do.

  A first invention includes a rotating drum having a rotating shaft in a substantially horizontal direction or a substantially inclined direction, a resin water tank containing the rotating drum, a drum driving motor for driving the rotating drum, and a back surface of the water tank. A bearing part that supports the drum driving motor and supports the rotating drum, a vibration damping damper that reduces vibration of the water tank, and one end of the vibration damping damper that is attached to the lower part of the water tank are fixed. A basin is provided, and a reinforcing member is provided between the bearing and the pedestal so that one end is connected to the bearing and the other is connected to the pedestal. Since it can be formed, it can be manufactured at low cost, and the bearing member and the pedestal portion can be reliably connected by the reinforcing member, so that the laundry is unbalanced during the dehydration process, and the shaft generated at that time It is possible to suppress the phase difference of the load between the parts and the base part, it is possible to withstand unbalanced state of the laundry during spin-drying operation.

  According to the second invention, in particular, the reinforcing metal fitting of the first invention has a square shape with an inward opening, so that there is a space for providing a drain outlet at the lower part of the water tank while ensuring bending rigidity and torsional rigidity. Can be secured.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a longitudinal sectional view of a drum type washing machine according to the first embodiment of the present invention, FIG. 2 is a bottom view of a water tank unit of the drum type washing machine, and FIG. 3A is the drum type washing machine. Sectional drawing of the reinforcing member of a machine and FIG.3 (b) are bottom views of the reinforcing member of the drum type washing machine.

  In the figure, a water tank unit 1 accommodates a rotating drum 3 in a resin water tank 2, and supports a rotating shaft 3 a of the rotating drum 3 with a bearing portion 4 screwed and fixed to the back surface of the water tank 2. The rotor 5a of the drum drive motor 5 is connected to the shaft 3a, and the stator 5b of the drum drive motor 5 is fixed to the bearing portion 4 with screws.

  The aquarium unit 1 is disposed in the washing machine casing 6 so as to incline forward, and its weight is supported by a pair of left and right vibration damping dampers 7 attached to the base of the washing machine casing 6. ing. Since the aquarium unit 1 has heavy components such as the bearing 4 and the drum drive motor 5 attached to the back side thereof, the center of gravity position is closer to the back side, and the vibration damper 7 places the aquarium unit 5 on the center of gravity. It is supported below the front side of the position. Furthermore, a coil spring 9 is installed between the upper support fitting 8 fixed to the upper part of the water tank 2 and the upper surface of the washing machine housing 6 to urge the water tank unit 5 toward the front side and the upper side. By installing this coil spring 9, it is corrected that the aquarium unit 1 supported by the anti-vibration damper 7 nearer to the front side than the position of the center of gravity is brought into a state of falling to the back side.

  The anti-vibration damper 7 includes an oil damper mechanism 7 a in which oil is sealed in a cylinder, and a coil spring mechanism 7 b provided coaxially with the oil damper mechanism 7 a, and a piston rod 7 c constituting the oil damper mechanism 7. Is fixed to the support base 10 fixed to the base of the washing machine housing 6 via the cushioning material 7d. The upper end portion of the oil damper mechanism 7 is fixed to a pedestal portion 11 screwed to the lower portion of the water tank 3 via a cushioning material 7d.

  Between the bearing part 4 and the pedestal part 11, a reinforcing member 12 having one end fixed to the bearing part 4 by screws and the other end fixed to the pedestal part 11 by screws is provided. The reinforcing member 12 is formed of a metal member that is bent into a dogleg shape. The pedestal 11 side of the reinforcing member 12 has an opening 12a in a substantially central portion and has a mouth shape, and a drain port 13 for draining washing water in the water tank 2 through the opening 12a. Is provided. Thus, by making the base part 11 side of the reinforcing member 12 into a mouth shape, the section modulus can be increased, and the strength and rigidity can be ensured. Further, by providing the flange portion 12b on the outer peripheral portion of the reinforcing member 12, it has a substantially U shape, and has a large section modulus and a strong torsional rigidity.

  Further, the outer periphery of the opening 12a has a structure in which a flange 12c is provided, and a bead 12g is attached to a bent portion 12f of a dogleg shape of the mounting portion 12d of the bearing portion 4 and the mounting portion 12e of the base portion 11. It is provided to increase strength and rigidity.

  The rotary drum 3 is formed on the front side of the washing machine housing 6 because the rotation axis direction is inclined so that the rotation axis direction is inclined downward from the front side opening as shown in the drawing toward the back side as the bottom surface. Opening the door body 14 that can be freely opened and closed on the inclined surface 6a reduces the degree of bending when the laundry is taken in and out of the rotating drum 3, and there is room on the front side of the drum type washing machine. Since it is not necessary to secure a certain space, it can be configured as a drum type washing machine that can be installed in a narrow space such as a washroom.

  With the above configuration, since the water tank 2 is formed of resin, a complicated shape can be easily formed, and a drum-type washing machine can be manufactured at a low cost. Therefore, even if the laundry is unbalanced during the dehydration process, the phase difference between the load applied to the bearing portion 4 and the load applied to the pedestal portion 11 by the vibration damping damper 7 will be described. Can be held by the reinforcing member 12, the load applied to the water tank 2 can be reduced, and the reliability of the water tank 2 can be improved.

  In the above-described embodiment, the rotation shaft 3a of the rotary drum 3 is arranged to be inclined, but the same effect can be obtained even when the rotation shaft 3a of the rotation drum 3 is arranged in the horizontal direction.

  Moreover, as shown in FIG. 1, the unit 15 for a drying function is provided in the back side of the bearing part 12, and an equivalent effect can be acquired also as a drum type washing-drying machine.

  As described above, according to the present invention, in the drum type washing machine in which the rotating drum is accommodated in the water tank, the water tank is molded with a resin capable of forming a complicated shape, and the strength of the entire water tank is enhanced by the reinforcing metal fittings. Therefore, it is useful as a drum type washing machine and a drum type washing and drying machine.

The longitudinal cross-sectional view of the drum type washing machine in the 1st Embodiment of this invention Bottom view of the water tank unit of the drum type washing machine (A) Sectional view of the reinforcing member of the drum type washing machine (b) Bottom view of the reinforcing member of the drum type washing machine

Explanation of symbols

2 Water tank 3 Rotating drum 4 Bearing part 5 Drum drive motor 7 Anti-vibration damper 11 Base part 12 Reinforcing member

Claims (2)

A rotating drum having a rotating shaft in a substantially horizontal direction or a substantially inclined direction, a resin water tank containing the rotating drum, a drum driving motor for driving the rotating drum, and a drum driving motor attached to the back surface of the water tank And a bearing part that pivotally supports the rotating drum, a vibration damping damper that reduces vibration of the water tank, and a pedestal part that is attached to a lower part of the water tank and to which one end of the vibration damping damper is fixed. A drum type washing machine provided with a reinforcing member between one end of the bearing portion and the pedestal portion, one end connected to the bearing portion and the other end connected to the pedestal portion. The drum-type washing machine according to claim 1, wherein the reinforcing metal fitting is formed in a mouth shape in which a substantially central portion of a portion connected to the pedestal portion is opened.

Images