JP2006311906A - Washing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a washing machine capable of simplifying the unit structure of the washing machine and enhancing the washing efficiency as well by reducing the number of parts. <P>SOLUTION: The washing machine 1 comprises a casing 2, an outer tub 3 elastically supported inside the casing 2, an inner tub 4 rotatably supported inside the outer tub 3 for storing the laundry, and a motor 6 disposed outside the outer tub 3 for rotating the inner tub 4. The inner tub 4 is connected to a rotation shaft 7 of the motor 6. The washing machine 1 also comprises a plurality of projecting agitation blades 11, extending toward the end of the bottom 9 of the inner tub 4 around the rotation shaft 7, on the bottom 9 of the inner tub 4, and a plurality of agitation ribs 12, extending in the vertical direction, on the inner wall surface 13 of the inner tub 4. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a washing machine, and more particularly to a washing machine that can simplify the unit structure of a washing machine by reducing the number of parts and improve the cleaning power.

  A conventional washing machine generally performs washing by rotating a pulsator in an inner tub. As shown in FIG. 3, this type of washing machine 50 is provided with an outer tub 53 and an inner tub 54 having a double structure in a housing 52, and the outer tub 53 is provided with a suspension rod 63 and a suspension mechanism 64 in the housing 52. And is suspended and supported by the casing 52 in a vibration-proof manner. The inner tub 54 accommodates laundry and is rotatably supported in the outer tub 53. A pulsator 56 provided with a plurality of blades 60 for stirring the laundry is provided at the bottom of the inner tub 54 (see, for example, Patent Document 1).

  As shown in the figure, the conventional washing machine 50 is provided with a direct drive type motor 57 as a driving means below the outer tub 53, and its rotating shaft 58 has a double shaft structure with an electromagnetic clutch mechanism 59. A pulsator 56 is attached to the shaft end.

The rotation of the motor 57 is switched between deceleration and connection of the motor 57 by the electromagnetic clutch mechanism 59, and the driving force is transmitted to the inner tank 54 by the outer shaft of the double shaft, and is transmitted to the pulsator 56 by the inner shaft. In the washing and rinsing process, the rotation of the motor 57 is transmitted to the pulsator 56 to rotate, and the laundry is stirred and washed and rinsed in the inner tub 54. In the dehydration process, the separator 56 is synchronized with the inner tub 54. Rotate at high speed to dehydrate.
JP 2004-209132 A

  The washing machine having the above configuration requires a separate router, an electromagnetic clutch mechanism, and a rotary shaft with a double shaft structure, which requires a large number of parts, complicates the unit structure of the washing machine, and complicates assembly man-hours. This contributes to the increased cost of the washing machine and a decrease in reliability due to breakdown.

  In view of the above problems, the present invention provides a washing machine that can reduce the number of parts, simplify the unit (internal) structure of the washing machine, and improve the cleaning power.

  The invention according to claim 1 is a housing, an outer tub elastically supported in the housing, an inner tub that is rotatably supported in the outer tub and stores laundry, and the inner tub is rotated. A washing machine provided with a motor outside the outer tub, wherein the inner tub is connected to a rotating shaft of the motor and extends toward the end of the bottom centered on the rotating shaft at the bottom of the inner tub The washing machine is characterized in that a plurality of protruding stirring blades are provided, and a plurality of stirring ribs extending in the vertical direction of the inner peripheral surface are provided on the inner peripheral wall surface of the inner tub.

  The invention according to claim 2 is the washing machine according to claim 1, wherein the protruding stirring blades and stirring ribs are formed integrally with the inner tub.

  In the washing machine according to the present invention, since the inner tub is directly connected to the rotating shaft of the motor, the conventional electromagnetic clutch mechanism and the double shaft structure are not required, and the number of parts is reduced and the unit structure of the washing machine is reduced. Simplification, cost reduction of washing machine, improvement of reliability, and a plurality of protruding stirring blades provided at the bottom of the inner tub and a plurality of stirring ribs provided on the inner peripheral wall surface Since the laundry inside is agitated and washed and rinsed, a pulsator becomes unnecessary, and agitation force is generated from the bottom and inner peripheral surface of the inner tub, thereby increasing the detergency.

  FIG. 1 is a schematic longitudinal sectional view of a washing machine 1 according to an embodiment of the present invention, and FIG. 2 is a plan view of a main part in the washing machine.

  In the figure, the washing machine 1 is provided with an outer tub 3 and an inner tub 4 having a double structure in a housing 2. The outer tub 3 is elastically suspended from the housing 2 via a suspension rod 15 by a suspension mechanism 14 and is supported and installed in a suspended antivibration manner. The inner tub 4 for storing laundry is rotatably supported in the outer tub 3 and is a bottomed container having an opening 5 for taking in and out the laundry. A small hole for dehydration (not shown) is formed on the peripheral wall thereof. ) Are opened in large numbers.

  The casing 2 is provided with an operation panel 8 for setting the operation of the washing machine 1 under computer control, a lid 16 that can be opened and closed, and a supply valve 17 such as tap water. A drain pipe 18 is connected to the bottom of the outer tub 3. Has been.

  A direct drive type motor 6 as a driving means is provided below the outer tub 3, and the rotating shaft 7 of the motor 6 is inserted in the central portion of the outer tub 3 with waterproof means, and directly into the central portion of the inner tub 4. It is connected to transmit the driving force of the motor 6 to the inner tank 4.

  The rotational speed and direction of the motor 6 and the operation time are set by the operation panel 8 and controlled by a built-in computer. Therefore, an electromagnetic clutch mechanism or a double shaft like a conventional washing machine is used. The rotating shaft of the structure becomes unnecessary.

  The inner tank 4 has a plurality of protruding stirring blades 11 (in the figure, four protruding stirring blades in a cross shape) extending to the end of the inner tank bottom centering on the rotating shaft 7 of the bottom 9. Are provided at equal intervals.

  Further, a plurality of stirring ribs 12 protruding from the inner peripheral surface and extending in the vertical direction are provided on the inner peripheral wall surface 13 of the inner tank 4 at equal intervals in the form of an internal gear on the entire circumference of the inner peripheral surface.

  The protruding stirring blades 11 and the stirring ribs 12 provided in the inner tub 4 can wash and rinse the laundry and washing water in the inner tub 4 by the protrusions, and Since the stirring force is generated from the bottom 9 and the inner peripheral surface 13 of the tank 4, the stirring ability can be improved and the cleaning power can be increased as compared with the conventional pulsator provided on the bottom of the inner tank.

  The protruding stirring blades 11 and the stirring ribs 12 can be formed and formed at the same time when the inner tub 4 is manufactured, and a conventional pulsator for stirring which is a separate part is not necessary. The number can be reduced.

  The protrusion-shaped stirring blade 11 may have a spiral shape having a curved portion with the rotation shaft 7 as the center, and the stirring rib 12 has an inclination angle with respect to the vertical direction of the inner peripheral surface. It can be changed without departing from the purpose of the present invention, such as those provided, zigzag arranged, or alternately arranged stirring ribs having different heights and cross-sectional shapes, and the number of them can also be installed It can be changed according to the dimensions of the protruding stirring blades 11 and the stirring ribs 12 and the capacity of the washing machine.

  In such a washing machine 1, the rotation of the motor 6 is directly transmitted to the inner tub 4 in the washing and rinsing process, and the rotation is performed by performing operation control such as intermittent inversion operation, and the laundry is stirred in the inner tub 4 for washing. In the dehydration process, the inner tub 4 is rotated in one direction at a higher speed than in the washing and rinsing process to dehydrate.

  Therefore, the washing machine 1 of the present invention can increase the washing power of the laundry, and eliminates the need for the conventional pulsator, electromagnetic clutch mechanism and double shaft structure rotary shaft, thereby reducing the number of parts and the washing machine unit. This simplifies the structure and reduces the cost of the washing machine.

  The washing machine of the present invention is used in various washing machines such as a two-tank washing machine and an automatic washing machine.

It is a section schematic diagram of a washing machine of an embodiment. It is a principal part top view in a washing machine same as the above. It is the cross-sectional schematic of the washing machine of a prior art example. It is a principal part top view in a washing machine same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Washing machine 2 ... Housing 3 ... Outer tub 4 ... Inner tub 6 ... Motor 7 ... Rotating shaft 9 ... Bottom of inner tub 11 ... Protruding stirring blade 12 ... Stirring rib 13 …… Inner wall surface of the inner tank

Claims (2)

A housing; an outer tub elastically supported in the housing; and an inner tub that is rotatably supported in the outer tub and stores laundry, and the motor that rotates the inner tub is A washing machine provided outside the tub,
The inner tank is connected to the rotating shaft of the motor;
Provided at the bottom of the inner tub are a plurality of protruding stirring blades extending toward the end of the bottom around the rotation axis, and extend in the vertical direction of the inner rim on the inner peripheral wall of the inner tub A washing machine comprising a plurality of stirring ribs. The washing machine according to claim 1, wherein the protruding stirring blades and the stirring rib are formed integrally with the inner tub.

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