JP2005137644A - Drum type washing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drum type washing machine equipped with a restraining structure which fixes a water tub unit housing a rotary drum in the water tub to the washing machine box body when the drum type washing machine is moved as in the case of transport. <P>SOLUTION: The water tub unit 5 which houses the rotary drum 2 in the water tub 3 is supported from the bottom side by a vibration-proof damper 70 at a position closer to the front surface than the position of the gravity center. An upper support fixture 75 which is fixed to the upper section of the water tub unit 5 is resiliently urged to the front surface side by a first coil spring 71 and is arranged in the washing machine box body 6. A fixture 83 is detachably attached to the back surface of the washing machine box body 6 in a manner to be confronted with a water tub fixing section 97 provided on the upper support fixture 75. When this drum type washing machine 1 is moved, the water tub unit 5 is fixed to the washing machine box body 6 when a fixing bolt 86 is inserted and threaded from the fixture 83 to the water tub fixing section 97. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a drum-type washing machine having a vibration control structure that suppresses vibration associated with rotation of a rotating drum by supporting a water tank containing the rotating drum in a casing with a suspension structure.

  A drum-type washing machine has a water tub that houses a rotating drum with its rotation axis direction set to the horizontal direction or a tilting direction that rises forward from the horizontal direction. It tends to be biased, and vibrations accompanying rotation of the rotating drum are likely to occur. In particular, if the laundry is biased to one side during dehydration of rotating the rotating drum at a high speed, a large vibration is generated. In order to prevent such vibration from being transmitted to the washing machine casing, the water tub containing the rotating drum is weight-supported in the washing machine casing by the vibration proof damper and supported by being suspended by the spring member.

  If the water tank containing the rotating drum is floatingly supported in the washing machine casing in this way, the water tank will be washed when subjected to vibration or impact during movement from the factory or delivery to the home. It becomes very unstable in the housing. In addition, since the rotating drum housed in the water tank is made of metal and has a large weight and a single-support structure in which the rotating shaft is attached to one end, the rotating shaft and the drum may be deformed by vibration or impact.

Therefore, a drum-type washing machine is known in which a water tub is fixed to the washing machine casing during movement until the drum-type washing machine is installed at the installation location so that the tank does not move in the washing machine casing due to vibration or impact. It has been. (See Patent Document 1).
JP-A-10-263276 (pages 3 to 4, FIG. 1)

  The water tank fixing structure according to the above prior art is a structure that can be applied to a drum-type washing machine in which a rotating drum is housed in a water tank so that the rotation axis thereof is in a horizontal direction. Since it is parallel to the back surface, a fixing member can be attached to each of a plurality of holes formed on the back surface of the washing machine housing as needed to fix the screw between the back surface of the washing machine housing and the water tank. . However, if the rotating drum is disposed at an angle in order to make it easy to put laundry in and out of the rotating drum, the water tank that houses the rotating drum is also disposed in an inclined state in the washing machine casing. There were issues that were not applicable.

  The object of the present invention is to provide a water tank as needed by a screw member that is detachably held on the back surface of the washing machine housing, even in a structure in which an inclined rotating drum is housed in the water tank. An object of the present invention is to provide a drum type washing machine having a movement countermeasure structure that can be fixed to a washing machine casing.

  In order to achieve the above object, a drum type washing machine according to the present invention has a rotating shaft fixed at the center of the bottom surface of a bottomed cylindrical rotating drum disposed in a water tank formed in a substantially bottomed cylindrical shape. A water tank unit, which is pivotally supported by a bearing fixed to the bottom of the water tank and has a drum drive motor connected to a rotating shaft, is disposed in the washing machine casing, and a bottom end is fixed to the base of the washing machine casing. The aquarium unit is supported by the vibration damper at a position closer to the front side than the center of gravity, and the upper support bracket fixed to the upper outer surface on the back side of the aquarium unit is elastically biased to at least the front side of the washing machine casing. The urging means is provided, and is configured such that a screw can be fixed between a fixing bracket detachably fixed to the back surface of the washing machine casing and the upper support bracket.

  The drum type washing machine according to the present invention corrects the water tank unit to fall to the back side when the water tank unit is weight-supported by the vibration proof damper from the center of gravity to the front side. Since the water tank unit is held at a predetermined position by urging the upper support bracket fixed to the upper part of the back side of the water tank at least on the front side by the urging means, when it is necessary to move the drum type washing machine, When the fixing bracket is attached to the back of the washing machine casing so as to face a part of the upper supporting bracket, and the screw is fixed between the fixing bracket and the upper supporting bracket, the water tank unit is fixed to the washing machine casing and is supported floating. Since the state is restrained, it is possible to prevent the water tank unit and the rotating drum from being damaged when subjected to a large vibration or impact when the drum type washing machine is moved.

  Moreover, since it receives a vibration and an impact with an upper support metal fitting, since it can prevent that a partial stress is applied to a water tank unit, the intensity | strength of a water tank unit can be improved.

  In the above configuration, the water tub unit is configured as a drum-type washing machine that facilitates taking in and out of the laundry by arranging the rotating shaft to be inclined downward from the front side to the back side in the washing machine casing. The above structure is suitable as a support structure for the aquarium unit, and the upper support bracket is disposed near the back of the washing machine casing, so that a screw between the fixing bracket provided on the back and the upper support bracket is provided. Fixing can be done easily.

  According to the present invention, the water tub unit can be fixed to the back surface of the washing machine housing regardless of the support angle of the water tub unit into the washing machine housing, and the water tank is needed when the drum type washing machine needs to be moved. By fixing the unit, it is possible to prevent the water tank from being damaged by vibrations or shocks accompanying the movement.

  FIG. 1 shows a support structure of a water tank unit 5 when the drum type washing machine 1 is moved in the drum type washing machine 1 according to the embodiment. The water tank unit 5 accommodates the rotating drum 2 in a resin water tank 3, and supports a rotating shaft 2a of the rotating drum 2 with a bearing 68 provided on the back surface of the water tank 3, and a drum drive motor on the rotating shaft 2a. 7 is connected. The aquarium unit 5 is disposed in the washing machine casing 6 so as to be inclined in a front-up state, and a lower support bracket 74 fixed to the lower part of the aquarium 3 and a support fixed to the base of the washing machine casing 6. The weight of the water tank unit 5 is supported by arranging a pair of left and right vibration damping dampers 70 between the base 73. The aquarium unit 5 has a heavy weight component such as a bearing 68 and a drum drive motor 7 attached to the back side thereof, so that the center of gravity position is closer to the back surface, and the anti-vibration damper 70 places the aquarium unit 5 in the center of gravity position. Since it is supported on the lower side closer to the front side, the balance of the water tank unit 5 is in a state of falling to the back side, and in order to correct this, the water tank 3 is fixed over a wide range with a plurality of screws 98 on the upper part. A first coil spring (first urging means) 71 is installed between a metal upper support fitting (aquarium reinforcement fitting) 75 and the upper surface of the washing machine casing 6, and the aquarium unit 5 is arranged on the front side and the upper side. It is energizing towards. In addition to the first coil spring 71, a second coil spring (second urging means) is provided between the back surface of the water tub unit 5 below the position supported by the vibration damping damper 70 and the back surface of the washing machine housing 6. ) When 72 is installed, the state where the aquarium unit 5 falls to the back side is more reliably corrected.

  As shown in FIG. 3, the vibration damper 70 includes an oil damper mechanism 78 in which oil is sealed in a cylinder, and a coil spring mechanism 79 provided coaxially with the oil damper 78. A support shaft 84 fixed to the lower end of 78 and having a coil spring mechanism 79 disposed on the outer periphery thereof is fixed to a support base 73 fixed to the base of the washing machine housing 6 via a cushioning material 77. Further, the piston rod 84 constituting the oil damper mechanism 78 is fixed to the lower support metal fitting 74 fixed to the lower part of the water tank 3 through the buffer material 77.

  The rotating drum 2 is formed on the front side of the washing machine casing 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 9 that can be opened and closed on the inclined surface 6a is less likely to bend when the laundry is taken in and out of the rotary drum 2, and there is room on the front side of the drum-type washing machine 1. Therefore, it is possible to configure the drum-type washing machine 1 that can be installed in a narrow space such as a washroom.

  With the above configuration, the weight of the water tank unit 5 is supported by the vibration damping damper, and the state where the water tank unit 5 falls to the back side by being supported at a position closer to the front side than the center of gravity is elastically prevented by the first coil spring 71, and By assisting with the second coil spring 72, the water tank unit 5 is held at a predetermined position. Further, since the vibration damping damper 70 and the first and second coil springs 71 and 72 are elastically supported, the vibration accompanying the rotation of the rotary drum 2 is suppressed from being transmitted to the washing machine casing 6.

  The drum-type washing machine 1 having the above-described configuration opens the door 9 provided on the front side of the washing machine casing 6, puts the laundry into the rotating drum 2, and starts the operation, so that the water absorption unit 12 is started. Then, water is supplied to the water level corresponding to the amount of laundry in the water tank 3, and the rotary drum 2 is rotationally driven by the drum drive motor 7, so that the washing process, the rinsing process, and the dehydrating process are sequentially executed.

  Since the drum-type washing machine 1 having the above-described configuration supports the water tub unit 5 in the washing machine casing 6 as described above, the drum-type washing machine 1 is transported from a production site to a warehouse or a sales store, or from a sales store to a home. The tank unit 5 may be damaged if it is transported to a location where it is moved, or if it is moved by moving, etc., subject to large vibrations or shocks, or if it is overturned or loaded at the wrong angle. May occur. In particular, the rotary drum 2 is made of metal and has a large weight, and since the rotary shaft 2a is in a single-supported state attached to the bottom surface of the bottomed cylindrical shape, the rotary shaft 2a may be deformed by a large impact. Therefore, when the drum-type washing machine 1 is moved, it is necessary to provide a restraining structure that restrains the floating state of the water tub unit 5 so that the water tub unit 5 does not move in the washing machine housing 6. The restraint structure is required to facilitate the work of restraining the tank unit 5 and releasing the restraint.

  As shown in FIGS. 1 and 2, the restraint structure of the water tank unit 5 according to the present embodiment is provided with a plurality of bosses 3a over a wide range on the resin water tank 3, and a plurality of bosses 3a are provided on the plurality of bosses 3a. A water tank fixing part 97 is formed by cutting and raising a part of the metal upper support metal fitting 75 fixed by tightening a screw 98 of the water tank, and the water tank fixing part 97 is formed in parallel with the back surface of the washing machine casing 6. The connecting portion 97a is provided with a screw hole 97b, and a fixing bracket 83 formed by bending a strip-shaped plate material into a square shape is detachably attached to the back surface of the washing machine housing 6. A fixing bolt 86 is passed through the fixing metal 83.

  When restraining the water tub unit 5 when the drum type washing machine 1 is moved, if the fixing bolt 86 is rotated and advanced, the tip of the fixing bolt 86 is screwed into the screw hole 97b provided in the connecting portion 97a to fix the connecting portion 97a. The water tank unit 5 is fixed to the back surface of the washing machine casing 6 in close contact with the metal fitting 83, and the floating state of the water tank unit 5 is restricted. When releasing the restraint state of the aquarium unit 5, if the fixing bolt 86 is rotated in the direction of coming out of the screw hole 97 b, the water tank fixing part 97 is separated from the fixing fitting 83 when the fixing bolt 86 comes out of the screw hole 97 b. 5 is released, and then the fixing bracket 83 is removed from the back surface of the washing machine casing.

  Since the metal upper support fitting 75 is fixed to the upper part of the resin water tank 3 with a plurality of screws 98 over a wide range, when the drum-type washing machine 1 is moved, Even if a force is applied to the support fitting 75, the upper support fitting 75 is made of metal and thus is not damaged. Further, the stress concentration applied to the water tank 3 can be reduced, and the resin water tank 3 is also damaged. Therefore, the strength of the drum type washing machine 1 when moving can be ensured.

  In addition, as indicated by the phantom line in FIG. 2, a cover 87 that covers the hole after the fixing bracket 83 is removed is provided on the outer rear side of the washing machine housing 6 so that the finger can be opened and closed. Can be prevented. Moreover, the restraint structure shown in FIG. 2 is formed in two or more places on the left and right sides, so that the restraint of the water tank unit 5 is more reliably performed.

  Although the embodiment described above has been described with respect to the configuration in which the rotating drum 2 is disposed so as to be inclined from the horizontal direction, the same configuration can be applied to a configuration in which the rotating drum 2 is disposed in the horizontal direction.

  As described above, according to the present invention, when the drum-type washing machine in which the water tank unit in which the rotary drum is accommodated in the water tank is floated and supported in the washing machine casing is transported, the water tank is damaged. Can be prevented.

Sectional drawing which shows the support structure and restraint structure in the drum type washing machine which concerns on embodiment. The expanded sectional view which shows the detail of a restraint structure same as the above. The front view which shows the structure of the vibration isolator applied to the support structure same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Drum type washing machine 2 Rotating drum 3 Water tank 5 Water tank unit 6 Washing machine housing 7 Drum drive motor 70 Anti-vibration damper 71 1st coil spring (1st biasing means)
72 Second coil spring (second biasing means)
73 support base 74 lower support bracket 75 upper support bracket 83 fixing bracket 86 fixing bolt 97 water tank fixing portion 98 screw

Claims (2)

A rotating shaft fixed to the center of the bottom surface of a bottomed cylindrical rotating drum disposed in a water tank formed in a substantially bottomed cylindrical shape is supported by a bearing fixed to the bottom surface of the water tank and the drum is attached to the rotating shaft. A water tank unit formed by connecting a drive motor is arranged in the washing machine casing, and the water tank unit is placed at a position closer to the front side than the center of gravity by a vibration-proof damper having a lower end fixed to the base of the washing machine casing. A biasing means that elastically biases the upper support bracket fixed to the upper outer surface on the back side of the aquarium unit to the at least the front side of the washing machine housing is provided and can be attached to and detached from the back of the washing machine housing A drum-type washing machine characterized in that it is configured so that a screw can be fixed between the fixing bracket fixed to the upper portion and the upper support bracket. The drum-type washing machine according to claim 1, wherein the water tub unit is disposed in the washing machine casing such that the rotation shaft is inclined downward from the front side to the back side.

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