JP4893229B2 - Drum washing machine - Google Patents

Description

  The present invention relates to a drum-type washing machine having a rotating tub for storing laundry and a stirring member that is located in the rotating tub and stirs the laundry.

  As an example of this type of drum type washing machine, there is a drum type washing and drying machine as disclosed in Patent Document 1. As shown in FIG. 8, a water tank 53 is supported in a housing 52 by a suspension structure (not shown), and a rotating tank 55 formed in a bottomed cylindrical shape is disposed in the water tank 53. The water tank 53 and the rotating tank 55 are supported with the opening end side facing the front side of the housing 52 and the bottom surface side facing the back side of the housing 52, and the rotating tank 55 is supported by a motor 54 attached to the bottom surface of the water tank 53. Driven by rotation. A door body 58 is provided in the housing 52 so as to face the opening end side of the rotating tub 55, and the user can put laundry in and out of the rotating tub 55 by opening the door body 58.

  A plurality of protrusions 59 are provided on the inner peripheral wall of the rotating tank 55. A tank rotating shaft 51 fixed to the rotating tank 55 is directly connected to the rotor 56 of the motor 54 and is supported by a tank rotating bearing 61 attached to the water tank 53. The tank rotation shaft 51 has a hollow structure, and the rotation shaft 50 fixed to the stirring member 70 is inserted so as to coincide with the axis and supported by a bearing (not shown). A speed reducer or speed increaser 71 is attached to the rear part of the motor 54, and the rotational speed of the rotating tank 55 and the stirring member 70 is transmitted by reducing or increasing the speed of the tank rotating shaft 51 to the rotating shaft 50. A relative rotational speed difference is generated.

In the above-described configuration, when the motor 54 is driven and the rotating tub 55 is rotated in the washing process or the drying process, the laundry is lifted upward by the protrusion 59 on the inner peripheral wall of the rotating tub 55, and then has an appropriate height. The mixing operation is a composite stirring operation by the stirring operation of dropping by the stirring member 70 stirred by the stirring member 70 rotating with a relative rotational speed difference in the rotary tank 55. For this reason, compared with the conventional drum-type washing dryer which does not have the stirring member 70 and performs stirring operation only by rotation of the rotating tank 55, the ability to stir the laundry is improved, and sufficient washing ability and drying ability are obtained. Can be secured.
JP 2005-253567 A

  However, the above-described configuration requires a reduction gear or a speed increaser, so that the configuration becomes complicated, the drive unit becomes large, and it is difficult to store in the drum type washing machine main body, and there is a problem that the cost increases. there were.

  An object of the present invention is to provide a drum-type washing machine that performs stirring by giving a relative rotational speed difference between the rotating tub and the stirring member, and sufficiently stirs the laundry while having a simple drive configuration. An object of the present invention is to provide a drum-type washing machine having a structure.

In order to achieve the above object, a drum type washing machine according to the present invention has a water tank for storing washing water, and is rotatable in the water tank so as to be inclined downward from the horizontal direction horizontally or from the front side toward the back side. A bottomed cylindrical rotating tub that is supported and accommodates laundry, and is rotatably supported on the bottom surface of the rotating tub with the rotating tub and the rotation axis aligned with each other, and at least one at a position off the center of rotation . A stirring member having a protrusion, a motor that is a driving source for the rotation of the rotating tank, a hollow cylindrical tank rotating shaft that transmits the rotation of the motor to the rotating tank, and a hollow portion of the tank rotating shaft. A rotating shaft that is freely inserted and connected to the stirring member, a clutch mechanism that rotationally fixes or unfixes the rotating shaft with respect to the water tank, heating means that heats the air to generate hot air, Air blowing means for blowing wind; A blowing path of the hot air is passed through the stirring member from the bottom side of the tub leading to the water tank, provided from the top center of the bottom of the tub, the warm air and a discharge port for supplying the water tank The clutch mechanism rotates and fixes the stirring member at a position where one of the protrusions is adjacent to the discharge port in the circumferential direction, and the motor rotates the rotating tank .

As a result, when the motor is rotated with the rotation shaft fixed and rotated, and the tub rotation shaft is rotated, the laundry lifted upward along with the rotation of the rotation tub is discharged with respect to the rotation direction of the rotation tub. Since the hot air is blown to the place where a complex stirring operation with back-and-forth movement and vertical movement is applied, such as hooking it with a protrusion that is fixedly rotated in front, pushing it forward and then dropping it , evenly on the laundry since it is Rukoto rely efficiently warm air, it increased stirring power, a simple drive arrangement, it is possible to improve the dry燥能force.

According to the present invention, it is possible to improve the dry燥能force giving complex stirring operation accompanied by vertical movement and longitudinal movement to the laundry.

A first aspect of the invention is a water tank for storing washing water, and a bottomed cylinder that accommodates the laundry, and is supported in the water tank so as to be inclined horizontally or downwardly from the front side toward the back side. A rotating tank having a shape, a stirring member that is rotatably supported with the rotating tank aligned with the rotation axis on the bottom surface of the rotating tank, and has at least one protrusion at a position away from the rotation center; and the rotating tank A rotation source of the motor, a hollow cylindrical tank rotation shaft that transmits the rotation of the motor to the rotation tank, and a hollow portion of the tank rotation shaft that is rotatably inserted and connected to the stirring member. A rotating shaft, a clutch mechanism for rotating or fixing the rotating shaft relative to the water tank, a heating means for heating the air to generate hot air, a blowing means for blowing warm air, and hot air A stirring member is passed from the bottom side of the water tank. A blowing path by directing into the water tank, provided from the top center of the bottom of the tub, the warm air and a discharge port for supplying the water tank, the clutch mechanism is 1 Amane Toga of said protrusion While rotating and fixing the stirring member at a position adjacent to the discharge port in the direction, the motor rotates the rotating tub so that the laundry lifted upward with the rotation of the rotating tub , extruded forward hook in collision Okoshitai, it can be dropped by blowing hot air from a discharge port adjacent to the protrusion. For this reason, hot air can be blown to the place where a complex stirring operation involving back-and-forth movement and up-and-down movement is given , so that the hot air can be uniformly and efficiently applied to the laundry to be stirred, and the drying capacity is improved. Can be improved .

  In the second invention, in particular, a plurality of the protrusions of the stirring member of the first invention are provided so as to be equally spaced in the rotation direction, and the clutch mechanism has a plurality of equally spaced rotation positions equal to the number of the protrusions. Thus, since the rotation shaft is rotationally fixed, there are a plurality of times when the protrusion is positioned above the stirring member, and it is sufficient to rotate and fix at any one of the positions. Thus, it is possible to quickly switch from the state in which the rotation shaft is unfixed to the state in which rotation is fixed.

A third invention is, in particular, the other end of the rotary shaft to which one end of the first or second one of the invention is coupled to the stirring member connected to the circular plate-shaped clutch plates, rotating fixed to the clutch plate relative to the water tank Alternatively, by providing an actuator for releasing the fixation and configuring the clutch mechanism with the clutch plate and the actuator, the clutch mechanism can be easily configured, and a simple drive configuration can be realized.

In the fourth aspect of the invention, in particular, the clutch plate of the third aspect of the invention is covered along the outer shape of the motor on the other end side of the rotating shaft, so that the clutch plate is on the opposite side of the motor to the stirring member. However, a large space is not required, and the drive configuration is not increased in size. Moreover, the electromagnetic noise generated from the motor can be shielded by the clutch plate, and the noise can be reduced.

In the fifth aspect of the invention, in particular, since the rotating tub according to any one of the first to fourth aspects is inclined forward and high, the laundry tends to gather on the bottom side of the rotating tub. Is easily hooked by the protrusion of the stirring member located on the bottom surface side of the rotating tank, and the force to push forward is increased against the force trying to move to the bottom surface side, and the stirring ability by the back-and-forth motion is increased, and the simple configuration Thus, the cleaning ability and drying ability can be improved.

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

(Embodiment 1)
1 is a cross-sectional view of a drum-type washing / drying machine according to a first embodiment of the present invention, FIG. 2 is an external view thereof, FIGS. 3 and 4 are cross-sectional views thereof, and FIG. 5 is a cross-sectional view of FIG. It is AA sectional drawing. A water tank 2 is supported in a housing 1 by a suspension 5, and a rotating tank 3 formed in a bottomed cylindrical shape is disposed in the water tank 2. The water tank 2 and the rotating tank 3 are inclined downward from the horizontal direction from the front side to the back side, with the open end side being the front side of the case 1 and the bottom side being the back side of the case 1. It is supported. The door 1 is provided in the housing 1 so as to face the opening end side of the rotating tub 3, and the user can put the laundry in and out of the rotating tub 3 by opening the door 4.

  A bellows 7 formed of a flexible elastic body is disposed around the laundry entrance 6 of the water tub 2, and when the door body 4 is closed, one end of the bellows 7 comes into pressure contact with the inner surface of the tub 3. This prevents the water scattered with the rotation of the water from jumping out of the water tank 2.

  The rotating tub 3 is inclinedly arranged as described above, and the door 4 is provided in the housing 1 so as to face the opening, so that the door 4 faces the face of a person standing in front of the housing 1. Thus, when the door 4 is opened and the laundry is taken in and out of the rotating tub 3, the degree of bending is reduced, and the laundry can be taken in and out easily. Therefore, it is not necessary to secure a space in front of the housing 1 and it can be installed in a narrow space such as a washroom, and is configured as a drum type washing and drying machine suitable for a narrow Japanese living environment. be able to.

  A plurality of protrusions 11 are provided on the inner peripheral wall of the rotating tub 3, and by rotating the rotating tub 3 at a low speed, the laundry can be hooked by the protrusions 11 and lifted upward. Further, on the back side in the rotating tank 3, a stirring member 12 is rotatably provided with the rotating tank 3 and the rotation axis aligned with each other, and the stirring member 12 has a protrusion 12a at a position away from the rotation center. I have. A drainage path 8 for draining the water in the aquarium 2 is provided below the water tank 2, and a drainage valve 9 for closing and opening the path is provided in the middle of the drainage path 8.

  The rotating tub 3 for storing the laundry becomes a washing room when water, detergent or the like is stored in the water tub 2 with the drain valve 9 closed. Further, when the drain valve 9 is opened, water or detergent stored in the water tank 2 is drained from the drain path 8 and the rotating tank 3 is rotated at a high speed, the laundry is pressed against the side surface of the rotating tank 3 by centrifugal force. It is done. At this time, the moisture contained in the laundry passes through the plurality of dewatering holes 10 provided on the side surface of the rotating tub 3 between the water tub 2 and the rotating tub 3 and is drained from the drainage path 8. Thus, the rotary tank 3 also becomes a dehydration chamber.

In addition, the rotating tub 3 has a structure in which warm air is blown by the heater 21, the air blowing means 22, and the air blowing path 23. When the hot air is blown, the rotating tub 3 also becomes a drying chamber. The flow of wind in the drying process will be described below. The air blown by the air blowing means 22 is heated by the heater 21 to become warm air, led to the back side of the water tank 2 and the rotary tank 3 by the air blowing path 23, and from the discharge port 24 provided on the back surface of the water tank 2 to the water tank 2 is blown into.

  The warm air blown into the water tub 2 passes through the holes 25 provided on the back surface of the inner tub 3 and the plurality of small holes 12b provided in the stirring member 12, and is sprayed onto the laundry stored in the rotary tub 3. It is done. The air after the moisture is evaporated from the laundry passes between the water tank 2 and the rotary tank 3 through the dewatering hole 10 on the side surface of the rotary tank 3, and is introduced from the suction port 26 provided in front of the water tank 2 to the air supply path 23. Then, it reaches the air blowing means 22 again. Although not shown, a dehumidifying means for cooling and dehumidifying the air after moisture is evaporated from the laundry is provided in the middle of the blowing path 23 leading to the blowing means 22.

  On the bottom side of the water tank 2, a motor 13 serving as a drive source for the rotation of the rotary tank 3 is provided. The rotating tank 3 and the rotor 13b of the motor 13 are directly connected by the tank rotating shaft 16, and the rotation of the motor 13 is transmitted to the rotating tank 3 as it is. As shown in FIG. 3, the stator 13 a of the motor 13 is fixed to a stationary member 15 that is fixed to the bottom surface side of the water tank 2.

  The tank rotation shaft 16 is rotatably supported by two tank rotation bearings 17 attached to the stationary member 15, and is formed in a hollow shape. A rotating shaft 27 having one end connected to the stirring member 12 is inserted into the hollow portion of the tank rotating shaft 16 and is rotatably supported by a rotating bearing 28 attached to the tank rotating shaft 16. The other end of the rotating shaft 27 protrudes to the opposite side of the rotor 13 b of the motor 13 and is connected to a disc-shaped clutch plate 29. With the above configuration, the stirring member 12, the rotating shaft 27, and the clutch plate 29 are in a rotatable state regardless of the motor 13. The stationary member 15 is provided with an actuator 30 that extends and retracts the arm 30a by a solenoid, a geared motor, or the like.

  An insertion port 29 a into which the arm 30 a of the actuator 30 is inserted is provided on one side of the disk-shaped clutch plate 29. The arm 30a is configured to be inserted into the insertion port 29a in the extended state as shown in FIG. 3, and to be released in the contracted state as shown in FIG. When the arm 30 a is inserted into the insertion port 29 a with the arm 30 a extended, the clutch plate 29 is rotationally fixed to the stationary member 15 by the actuator 30. Similarly, the rotating shaft 27 and the stirring member 12 connected to the clutch plate 29 are also rotationally fixed. At this time, as shown in FIG. 5, the protrusion 12 a of the stirring member 12 is positioned above the stirring member 12. It is comprised so that it may become.

  Since the clutch plate 29, the rotary shaft 27, and the stirring member 12 are respectively fixed to each other, the protrusion 12a is always positioned above the stirring member 12 when the arm 30a is inserted into the insertion port 29a. Become. As described above, the clutch mechanism 31 that rotates and fixes the rotating shaft 27 with respect to the stationary member 15 is configured by only the clutch plate 29 and the actuator 30, and the clutch mechanism 31 is simply configured and the motor 13, a simple driving configuration of the rotating tank 3 and the stirring member 12 including the tank rotating shaft 16 and the rotating shaft 27 is realized.

With the above configuration, in the washing process or the drying process, in a clutch state in which the rotation shaft 27 as shown in FIG. 3 is rotationally fixed, a state in which the protrusion 12a as shown in FIG. When the rotor 13 b of the motor 13 is rotated, the laundry stored in the rotating tub 3 is lifted upward by the protrusions 11 on the inner peripheral wall of the rotating tub 3. After the lifted laundry is hooked by the protrusion 12a above the stirring member 12, the rotational movement is forcibly stopped, and the laundry that has lost its place in the rotational direction is forcibly moved forward. Will fall. For this reason, since it is possible to give a complex stirring operation with back and forth motion and up and down motion,
The stirring ability is increased, and the washing ability and the drying ability can be improved.

At this time, since the rotating tub 3 is provided so as to be inclined forward and high, the laundry tends to gather on the bottom surface side of the rotating tub 3, and is easily hooked by the protrusions 12 a of the stirring member 12. On the other hand, the force to push forward is increased, and it is possible to further improve the stirring ability by the back-and-forth motion. The clutch plate 29 covers the outer shape of the motor 13 and is formed in the same size as the lower shape of the motor 13. There is no need to open space. Further, the electromagnetic noise generated from the motor 13 can be shielded by the clutch plate 29, and the noise can be reduced.

  In the dehydration process, as shown in FIG. 4, the arm 30 a of the actuator 30 that constitutes the clutch mechanism 31 is contracted and released from the insertion port 29 a of the clutch plate 29. As a result, the clutch plate 29 is released from the fixed state and is freely rotatable. Similarly, the rotating shaft 27 and the stirring member 12 connected to the clutch plate 29 are also rotatable. In this state, dehydration is performed by rotating the rotor 13b of the motor 13 and rotating the rotating tub 3 at a high speed. At this time, since the stirring member 12 is rotatable, even when the laundry is caught by the protrusion 12a of the stirring member 12, the stirring member 12 is pulled by the rotation of the laundry and rotates in synchronization. That won't hurt the laundry.

  When switching from the state in which the clutch plate 29 is released to the state in which the clutch plate 29 is rotationally fixed, the insertion port 29a of the clutch plate 29 is at a rotational position that does not face the arm 30a of the actuator 30 in most cases. At this time, the actuator 30 tries to extend the arm 30a, but comes into contact with the side surface of the clutch plate 29, and the operation is suppressed in the middle. Even in this state, the actuator does not break down and continues to extend the arm 30a.

  When the rotor 13a of the motor 13 is rotated in this state, the clutch plate 29, the rotating shaft 27, and the stirring member 12 are not rotationally fixed, and thus are pulled by the movement of the laundry along with the rotation of the rotating tub 3 and rotate. . While the rotation is continued for a while, the insertion port 29a of the clutch plate 29 is in a rotational position facing the arm 30a of the actuator 30 until the clutch plate 29 rotates at least 360 degrees. When this rotational position is reached, the arm 30a is inserted into the insertion port 29a, and the clutch plate 29, the rotating shaft 27 and the stirring member 12 are rotationally fixed, and the switching of the clutch mechanism 31 is completed.

  In the configuration of the present embodiment, the drum-type washing / drying machine in which the rotating tub 3 is inclined is used. However, the present invention is not limited to this, and the drum-type washing in which the rotation axis of the rotating tub 3 is horizontal. Even if it is a dryer or a drum type washing machine that does not have a drying function, the effect of improving the stirring ability by giving the laundry a stirring operation with back and forth motion and vertical motion is the same Obtainable.

(Embodiment 2)
A second embodiment of the present invention will be described below. The same constituent elements as those of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. As shown in FIG. 6, the stirring member 12 is provided with three protrusions 12 a at equal intervals in the rotation direction. On the side surface of the clutch plate 29 of the clutch mechanism 31, three insertion ports 29a having the same number as the protrusions 12a are provided at rotational positions at equal intervals. Set so that one of the three protrusions 12a is positioned above the stirring member 12 when one of the three insertion ports 29a is in a rotational position facing the arm 30a of the actuator 30. is doing.

With the above configuration, when the clutch plate 29 is switched from the unlocked state to the rotationally fixed state, the insertion port 29a of the clutch plate 29 is almost not opposed to the arm 30a of the actuator 30, but at this time, the motor 13 is By rotating, the rotating tub 3 is rotated, and the arm 30a is inserted into the insertion port 29a until the clutch plate 29 rotates at least 120 degrees by being pulled by the movement of the laundry accompanying the rotation of the rotating tub 3. Is done. At this time, one of the three protrusions 12a is necessarily positioned above the stirring member 12. For this reason, compared with the case where there is only one protrusion 12a and one insertion port 29a, the switching of the clutch mechanism 31 can be completed quickly, and the laundry is combined with a back-and-forth motion and a vertical motion. Can be given immediately and the stirring ability can be increased.

  In the configuration of the present embodiment, the number of the protrusions 12a and the number of insertion ports 29a is three. However, the greater the number, the greater the number of clutch mechanisms that are provided at equal intervals in the rotation direction. The effect of quickly completing the switching of 31 is increased.

(Embodiment 3)
A third embodiment of the present invention will be described below. The same components as those in the first or second embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. As shown in FIG. 7, when the stirring member 12 is fixed by the clutch mechanism 31, the protrusion 12 a is positioned above the stirring member 12. In the drying process, the discharge port 24 through which the warm air is blown into the water tank 2 is provided so as to be positioned in the vicinity of the protrusion 12 a of the stirring blade 12 when viewed from the opening side of the rotating tank 3.

  In the drying process, when the motor 13 is rotated while the stirring member 12 is fixed by the clutch mechanism 31, when the laundry lifted upward is hooked by the protrusion 12a and pushed forward, the back side of the rotating tub 3 is just The hot air guided through the small hole 12b of the stirring blade 12 can be blown. For this reason, warm air can be uniformly and efficiently applied to the laundry to be stirred, and the drying ability can be improved.

As described above, according to the drum-type washing machine of the present invention, since giving complex stirring operation accompanied by vertical movement and longitudinal movement to the laundry can be improved dry燥能force, the drum type washing It is useful as a machine.

Cross-sectional view of the drum-type washing and drying machine in the first embodiment of the present invention The perspective view which shows the external appearance of the drum type washing-drying machine Detailed cross-sectional view of the main part when the stirring member of the drum type washing and drying machine is fixed Detailed cross-sectional view of the main part of the drum-type washer / dryer when the stirring member is not fixed AA sectional view showing the position of the projection in the first operation mode of the drum type washing and drying machine AA sectional drawing which shows the protrusion in the 1st operation mode of the drum type washing-drying machine in the 2nd Embodiment of this invention. The figure which shows the position of the protrusion and discharge port in the 1st operation mode of the drum type washing-drying machine in the 3rd Embodiment of this invention. Cross-sectional view showing the configuration of a conventional drum-type washing and drying machine

Reference Signs List 2 Water tank 3 Rotating tank 12 Stirring member 12a Projection body 13 Motor 16 Tank rotating shaft 21 Heating means 22 Blower means 23 Blowing path 27 Rotating shaft 29 Clutch plate 30 Actuator 31 Clutch mechanism

Claims (4)

A water tank for storing washing water, and a bottomed cylindrical rotating tank that accommodates the laundry, and is supported in the water tank so as to be inclined downward from the horizontal direction from the horizontal or front side to the back side ; An agitating member that is rotatably supported on the bottom surface of the rotating tank so that the rotating tank and the rotation axis coincide with each other, and has at least one protrusion at a position deviating from the rotation center; and a driving source for rotating the rotating tank A rotating cylindrical shaft that transmits rotation of the motor to the rotating tank, a rotating shaft that is rotatably inserted into a hollow portion of the tank rotating shaft, and is connected to the stirring member, A clutch mechanism for rotatingly fixing or unfixing the rotating shaft with respect to the water tank, a heating means for heating the air to generate hot air, a blowing means for blowing warm air, and the hot air from the bottom side of the water tank The water is passed through the stirring member A blowing path leading to the inner, provided from the top center of the bottom of the tub, the warm air and a discharge port for supplying the water tank, the clutch mechanism, the in one of the circumferential direction of the protrusion ejection A drum-type washing machine in which the stirring member is rotated and fixed at a position adjacent to the outlet, and the motor rotates the rotating tub . A plurality of protrusions of the stirring member are provided at equal intervals in the rotation direction, and the clutch mechanism is configured to rotate and fix the rotation shaft at a plurality of rotation positions at equal intervals equal to the number of the protrusions. The drum-type washing machine according to 1. One end is connected to the other end of the rotary shaft connected to the agitating member and a circular plate-shaped clutch plate, said clutch plate is provided an actuator for releasing the rotation fixing or fixed with respect to the water tank, a clutch mechanism in the clutch plate and the actuator The drum type washing machine according to claim 1 or 2 , wherein The drum type washing machine according to claim 3 , wherein the clutch plate is covered along the outer shape of the motor .

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