JP6025264B2 - Washing machine - Google Patents

Description

  The present invention relates to a washing machine.

  2. Description of the Related Art A washing machine in which a rotation axis of a washing tub extends in a direction inclined from a horizontal direction is conventionally known. Such a washing machine includes a water tub that covers the washing tub and a vibration isolation member that supports the water tub from below. The vibration isolating member can suppress vibration of a system including at least the washing tub and the water tub by supporting the water tub. In a washing machine in which the direction of the rotation axis extends from the horizontal direction, the center of gravity of the system including at least the washing tub and the water tub is before and after the washing tub before and after the laundry such as clothes is put into the washing tub. Move in the direction. Thereby, the vibration of the system changes before and after the movement of the center of gravity, and the vibration of the system becomes complicated.

  Japanese Patent No. 4334499 (hereinafter referred to as Patent Document 1) describes a washing machine including two vibration isolation members. In the washing machine according to Patent Document 1, the two vibration isolating members are arranged at predetermined intervals in the left-right direction (width direction) of the washing machine. At this time, the two vibration isolating members are arranged at positions substantially coincident with the center of gravity of the system in the front-rear direction.

Japanese Patent No. 4334499

  However, in the washing machine according to Patent Document 1, two vibration-proof members are arranged at the same position in the front-rear direction (depth direction) of the washing machine in a side view. That is, in the washing machine according to Patent Document 1, the water tank is supported by one vibration-proof member in the front-rear direction. Therefore, in the washing machine according to Patent Document 1, it is difficult to say that the center of gravity of the system including the washing tub and the water tub is taken into consideration.

  Further, when the washing tub is rotating at a relatively high speed, an eccentric load may be generated in the system. Considering the vibration of the system when the center of gravity moves and when an eccentric load is generated, the vibration of the system becomes more complicated than when the center of gravity does not move at all or no eccentric load occurs.

  On the other hand, when the number of anti-vibration members is increased, the system can be easily stabilized against vibration compared to the case where the number of anti-vibration members is two. However, since the cost of the vibration isolating member and the cost of the washing machine increase, it is not preferable to increase the number of the vibration isolating members. Therefore, it is desired to improve the stability of the system against vibration without increasing the number of vibration isolation members. Furthermore, when the two vibration isolating members have the same configuration, it is not necessary to consider the difference in the configuration of each vibration isolating member, so the cost of the vibration isolating member and the cost of the washing machine Can be suppressed.

  Accordingly, an object of the present invention is a washing machine having two vibration isolating members, a washing tub, and a water tub, and complicates the vibration of a system including the washing tub and the water tub when the washing tub rotates. It is providing the washing machine which can be suppressed.

  The washing machine according to the present invention includes a washing tub, a water tub, an outer box, a first vibration isolation member, and a second vibration isolation member. The washing tub has a bottomed cylindrical shape having an opening that opens toward the front and a bottom that is disposed to face the opening. Further, the washing tub rotates around the rotation axis. The water tank covers the washing tub. The outer box accommodates a water tub and a washing tub. The first vibration isolation member or the second vibration isolation member supports the left side or the right side of the water tank upward, respectively. In addition, a predetermined interval is provided between the first vibration isolation member and the second vibration isolation member with respect to the front-rear direction in the direction connecting the opening and the bottom of the washing tub.

  The washing machine of the present invention includes a first vibration isolation member and a second vibration isolation member that support the water tub, and a predetermined interval is provided between the first and second vibration isolation members in the front-rear direction. ing. Accordingly, the water tank is stably supported by the first vibration isolation member and the second vibration isolation member in the front-rear direction. Therefore, the complexity of the vibration of the system when the washing tub rotates can be suppressed.

  Therefore, according to this invention, it is a washing machine provided with the 1st anti-vibration member, the 2nd anti-vibration member, the washing tub, and the water tub, Comprising: The washing tub and the water tub when a washing tub rotates It is possible to provide a washing machine capable of suppressing complication of vibration of the system.

  In addition, the first vibration isolation member and the second vibration isolation member have the same configuration, so that the cost of the vibration isolation member and the cost of the washing machine can be suppressed.

  In the washing machine according to the present invention, it is preferable that the front-rear relationship of the first vibration isolating member or the second vibration isolating member be a front side where a load that pushes the washing tub downward by rotation during the dehydrating operation is generated.

  Moreover, according to the washing machine according to the present invention, the rotational axis of the washing tub may be inclined from the horizontal direction with the rear side down and the front side up.

  According to this configuration, when the washing tub is rotated counterclockwise when the washing machine is viewed from the front, a load due to centrifugal force that pushes the washing tub downward acts on the left side of the entire system. Therefore, when the washing machine is viewed from the front, the front part on the left side of the entire system is likely to be greatly displaced downward than the rear part on the left side. However, in the washing machine, when the washing machine is viewed from the front, the water tank can be stably supported by disposing the first vibration isolation member that supports the left side forward. Thereby, the vibration of the system when the washing tub rotates can be reduced. As a result, it is possible to suppress complication of vibration of the system when the washing tub rotates.

  As described above, according to the present invention, it is possible to provide a washing machine capable of suppressing complication of vibration of a system including a washing tub and a water tub when the washing tub rotates.

It is a perspective view which shows the washing machine which concerns on this invention. It is a front view of the washing machine shown in the state which saw through a part inside the outer case of the washing machine concerning this invention. It is a partial sectional view of the washing machine concerning this invention.

  As shown in FIG. 1, the washing machine 1 includes an outer box 10. As shown in FIG. 3, the washing machine 1 includes a water tank 40 and a rotating drum 20. The washing machine 1 is a fully automatic drum type washing machine. However, the washing machine 1 may have a function of drying laundry such as clothes accommodated in the rotary drum 20. As shown in FIG. 1, the outer box 10 has a substantially rectangular parallelepiped shape. The outer box 10 has a bottom plate 11, a body portion 12, and a top plate 13. The bottom plate 11 forms the bottom of the washing machine 1. The trunk portion 12 extends upward from the bottom plate 11. Moreover, the trunk | drum 12 has the front surface 121, the right side surface 122, the left side surface 123 (refer FIG. 2), and the back surface 124 (refer FIG. 3). The top plate 13 is a part of the trunk 12 and forms the top of the washing machine 1.

  1 to 3, reference signs Fr, Rr, Up, Dn, Ri, and Le indicate the front, rear, upper, lower, right, and left sides of the washing machine 1, respectively. As shown in FIG. 1, the left-right direction can be rephrased as the width direction W. Further, the front-rear direction can be rephrased as the depth direction D, and the up-down direction can be rephrased as the height direction H. With respect to the height direction H, the part above the center of the outer box 10 is the upper part of the outer box 10, and the part below the center of the outer box 10 is the lower part of the outer box 10.

  As shown in FIG. 1, a detergent case 16 is disposed on the top of the front surface 121. The detergent case 16 is housed in the outer box 10 so that it can be pulled out. A user of the washing machine 1 can put a detergent, a bleaching agent, a softening agent, and the like into the detergent case 16. An operation unit 17 having operation buttons (not shown) and a display panel (not shown) is arranged on the upper surface 121 of the outer box 10 so as to be aligned with the detergent case 16 in the width direction W.

  As shown in FIG. 3, the washing machine 1 includes a rotating drum 20 as a washing tub, a liquid balancer 30, a water tub 40 that covers the rotating drum 20, and a motor 5 as a drive unit. In addition, the washing machine 1 includes a control unit (not shown). The water tank 40 and the rotating drum 20 are accommodated in the outer box 10.

  The rotating drum 20 has an opening 21 and a bottom 22 and has a bottomed cylindrical shape. The opening 21 opens toward the front. The bottom 22 is disposed so as to face the opening 21. The rotary drum 20 rotates about the rotation axis R. The rotation axis R of the rotary drum 20 extends in a direction inclined from the horizontal direction. The bottom 22 extends in a direction substantially perpendicular to the rotation axis R. Of the directions connecting the opening 21 and the bottom 22 of the rotary drum 20, the direction parallel to the horizontal direction is the front-rear direction of the washing machine 1. A liquid balancer 30 is attached to the outer side of the edge 27 of the opening 21 with respect to the radial direction of a circle around the rotation axis R in the rotary drum 20.

  As the material of the rotating drum 20, a stainless steel plate is generally used. A plurality of small holes 24 for water supply, drainage and ventilation are formed in the peripheral wall 23 and the bottom 22 of the rotary drum 20. The peripheral wall 23 is a cylindrical portion of the rotary drum 20. In the washing machine 1, the peripheral wall 23 has a substantially cylindrical shape. The peripheral wall 23 extends in a direction parallel to the direction in which the rotation axis R extends. In addition, illustration of the small hole formed in the bottom part 22 is abbreviate | omitted.

  A plurality of baffles 26 are arranged on the peripheral wall 23. The baffle 26 extends substantially parallel to the rotation axis R. Further, the baffle 26 protrudes from the peripheral wall 23 inward in the radial direction of a circle having the rotation axis R as the center.

  The water tank 40 has an opening 41 and a bottom 42, and has a bottomed cylindrical shape. The rotating drum 20 is accommodated in a space formed inside the water tank 40. The opening 41 opens toward the front. The bottom portion 42 is disposed so as to face the opening portion 41. In the washing machine 1, the peripheral wall 48 of the water tub 40 has a substantially cylindrical shape (see FIG. 2). The peripheral wall 48 of the water tank 40 is a cylindrical part of the water tank 40. The peripheral wall 48 extends in a direction parallel to the direction in which the rotation axis R extends.

  A counterweight 28 is attached to the lower part of the water tank 40. Specifically, the counterweight 28 is arranged in the vicinity of the front surface 121 of the outer box 10 and facing the bottom plate 11 in the peripheral wall 48 of the cylindrical water tank 40. Note that a plurality of counterweights 28 may be attached to the water tank 40 in order to balance the entire water tank 40. Further, the counterweight 28 may be attached to the upper part of the water tank 40.

  As shown in FIG. 3, a drive shaft 25 is fixed to the outer surface of the bottom 22 of the rotary drum 20. A motor 5 is connected to the drive shaft 25. The motor 5 is attached to the outer surface of the bottom 42 of the water tank 40. The motor 5 includes a rotor 51, a stator 52, and a motor case 53. The rotor 51, the stator 52, and a part of the drive shaft 25 are accommodated in a motor case 53. The rotor 51 has a permanent magnet. The rotor 51 is fixed to the drive shaft 25. The stator 52 is disposed inside the motor case 53 so as to surround the rotor 51 inward in the radial direction of a circle centered on the drive shaft 25. The stator 52 has a coil. When the electric power supplied to the motor 5 is controlled by the control unit, the rotation speed and the rotation direction of the rotor 51 are variably controlled. As a result, the rotary drum 20 rotates in a predetermined rotational speed and in a predetermined direction.

  As shown in FIG. 1, an outer door 18 is attached to the front surface 121 of the outer box 10. The opening 15 is disposed in front of the opening 21 of the rotating drum 20 and in front of the opening 41 of the water tank 40. The outer door 18 opens and closes the opening 15 formed in the front surface 121. The outer door 18 opens and closes the opening 41 of the water tank 40 together with the opening 15 of the outer box 10. By opening the outer door 18, the laundry can be put into or taken out of the rotating drum 20 through the opening 15 of the outer box 10 and the opening 41 of the water tank 40.

  The outer door 18 has a transparent window 81. Thereby, the user of the washing machine 1 can visually recognize the inside of the rotating drum 20 from the outside of the outer box 10. The outer door 18 has a protruding portion 82. The protrusion 82 has a vessel shape. The protrusion 82 is recessed from the front to the rear.

  A packing 44 formed of an elastic body such as rubber is attached to the edge 43 of the opening 41 of the water tank 40. The packing 44 is disposed between the opening 15 and the opening 41. When the user closes the outer door 18, the packing 44 comes into close contact with the peripheral edge 83 of the protruding portion 82, whereby the water tank 40 is sealed by the protruding portion 82 and the packing 44. Thus, when the outer door 18 closes the opening 15 of the outer box 10, the peripheral edge 83 of the protrusion 82 closes the opening 41 of the water tank 40.

  The protrusion 82 protrudes from the front to the rear when the outer door 18 closes the opening 15 of the outer box 10 and the peripheral edge 83 of the protrusion 82 closes the opening 41 of the water tank 40. Yes. When the outer door 18 is closed, that is, when the outer door 18 closes the opening 15 of the outer box 10 and the opening 41 of the water tank 40, a part of the protrusion 82 is inside the water tank 40. Is arranged. The shape of the protruding portion 82 protrudes from the front to the rear of the washing machine 1 and protrudes when the outer door 18 closes the opening 15 of the outer box 10 and the opening 41 of the water tank 40. The part 82 is not particularly limited except that a part of the part 82 is disposed inside the water tank 40.

  The washing machine 1 includes a vibration isolation mechanism 6 having a plurality of vibration isolation members. The water tank 40 is supported by a plurality of vibration isolation members so that the rotating drum 20 can rotate around the rotation axis R inside the water tank 40. The vibration isolation mechanism 6 is disposed below the water tank 40 in the outer box 10. The vibration isolation mechanism 6 includes a front vibration isolation member 61 and a rear vibration isolation member 62 as a plurality of vibration isolation members. The front vibration isolation member 61 and the rear vibration isolation member 62 support the water tank 40 upward from the bottom plate 11 of the outer box 10. The front vibration isolation member 61 and the rear vibration isolation member 62 have the same configuration.

  As shown in FIG. 2, when the washing machine 1 is viewed from the front, that is, when the washing machine 1 is viewed from the front, the front vibration isolation member 61 and the rear vibration isolation member 62 are arranged on the left side and the right side of the washing machine 1, respectively. Has been. The front vibration isolation member 61 has a damper 63 and a compression coil spring 64. In the vibration isolation mechanism 6, the lower end of the damper 63 forms the lower end of the front vibration isolation member 61. The lower end of the front vibration isolating member 61 is connected to the bottom plate 11. The damper 63 has a rod 65 protruding upward from the damper 63. The damper 63 buffers an impact force that acts on the rod 65. The compression coil spring 64 is arranged around the rod 65 so as to wrap around the rod 65. The upper end of the rod 65 and the upper end of the compression coil spring 64 are connected to each other by a hook-like connector 66. Note that, as described above, the configuration of the rear side vibration isolation member 62 is the same as that of the front side vibration isolation member 61, and thus the description of the configuration of the rear side vibration isolation member 62 is omitted.

  A pedestal 45 and a pedestal 46 are provided on the outer peripheral surface of the lower part of the water tank 40. The front vibration isolation member 61 and the rear vibration isolation member 62 are attached to the pedestal 45 and the pedestal 46, respectively. When the front vibration isolation member 61 is attached to the pedestal 45, a bush 67 formed of an elastic member such as rubber is disposed between the connector 66 and the pedestal 45.

  The vertical dimension of the pedestal 45 is larger than the vertical dimension of the pedestal 46. The lower end of the pedestal 45 and the lower end of the pedestal 46 are arranged at the same position in the vertical direction. The front vibration isolation member 61 is disposed between the bottom plate 11 and the pedestal 45 in the vertical direction, and supports the water tank 40 upward from the bottom plate 11. Similarly, the rear vibration isolation member 62 is disposed between the bottom plate 11 and the pedestal 46 in the vertical direction and supports the water tank 40 upward from the bottom plate 11. Note that the configurations of the front side vibration isolation member 61 and the rear side vibration isolation member 62 are not particularly limited, and may have other configurations.

  The upper end of the front vibration isolation member 61 and the upper end of the rear vibration isolation member 62 are disposed inward in the width direction W (see FIG. 1) from the respective lower ends. Thus, the front side vibration isolation member 61 and the rear side vibration isolation member 62 are arranged so that the front side vibration isolation member 61 and the rear side vibration isolation member 62 are substantially inverted V-shaped when viewed from the front of the washing machine 1. Arranged inside the box 10.

On the other hand, as shown in FIG. 3, a predetermined interval is provided between the front vibration isolation member 61 and the rear vibration isolation member 62 in the front-rear direction. In the washing machine 1, when the washing machine 1 is viewed from the side, that is, in a side view of the washing machine 1, the front vibration isolation member 61 and the rear vibration isolation member 62 support the water tank 40 so as to extend in a substantially vertical direction. ing. Thus, the center line C ₂ of the center line C ₁ and the rear-side vibration-proof member 62 of the front damping member 61 and extends in a substantially vertical direction.

The distance L between the center line C ₁ and the center line C ₂ with respect to a predetermined interval, that is, the front-rear direction, is such that the washing machine 1 operates when the center of gravity of the system is in a no-load state of the washing machine 1 and in a rated load state. Includes a range to move between. This system includes at least a rotating drum 20, a water tank 40, a motor 5, a liquid balancer 30, and a counterweight 28.

  The no-load state of the washing machine 1 is a state in which no laundry is contained in the rotary drum 20 and no water is contained in the water tank 40. The rated load is, for example, the maximum weight allowed among the weight of laundry put in the rotary drum 20. The rated load state is a state where laundry having a weight of at least the rated load is accommodated in the rotary drum 20. In addition, when the washing machine 1 has a drying function, the rated load at the time of drying may be different from that at the time of washing and dewatering. In this case, the rated load during drying is preferably smaller than that during washing and dehydration. “Washing” refers to a time when the washing machine 1 is operating in at least a washing process among a washing process and a rinsing process, which will be described later, and “dehydrating” means that the washing machine 1 is operated in a dehydrating process. It is when you are.

  As an example, it is assumed that the rated load of the washing machine 1 is 10 kg. When the rated load of the washing machine 1 is 10 kg, about 40 kg at the time of washing (the weight of the laundry is 10 kg, the weight of the water contained in the laundry is about 10 kg, the weight of the water stored in the water tank 40 and the rotating drum 20) Is about 20 kg). Further, when the rated load of the washing machine 1 is 10 kg, the weight of about 20 kg (the weight of the laundry is 10 kg and the weight of the water contained in the laundry is about 10 kg) at the time of dehydration (particularly at the start of dehydration). The washing machine 1 is loaded. As described above, when the laundry with the rated load is accommodated in the rotary drum 20, the weight applied to the front side vibration isolation member 61 and the rear side vibration isolation member 62 as the support members during the washing is the load during the dehydration. Greater than the weight to be.

In the washing machine 1, the direction in which the rotation axis R extends is inclined from the horizontal direction. However, since the rotation axis R extends in a substantially horizontal direction, the position of the center of gravity of the system including the rotary drum 20 and the water tank 40 is before the laundry and water are put into the water tank 40 and the rotary drum 20. It changes in the front and rear direction after and after. Further, as the weight of the laundry and water increases, the region where the laundry and water are located extends to a more forward portion of the rotary drum 20, so that the position of the center of gravity of the system is displaced forward. However, the washing machine 1, the center of gravity G _W at the center of gravity G ₀ in the unloaded state of the washing machine 1, a state in which water is accumulated in the rotary drum 20 and the water tank 40 of the rated load state (i.e. the washing) If a center of gravity G _H at the time of dehydration of the rated load condition, with respect to the longitudinal direction, are disposed between the center line C ₁ and the center line C _2.

Note that the positions of the center of gravity G ₀ , the center of gravity G _W , and the center of gravity _GH shown in FIG. 3 indicate the order of the positions in the front-rear direction. Therefore, for example, the distance between the center line C ₂ and the center of gravity G ₀ , center of gravity G _W , or center of gravity _GH in the front-rear direction is not limited to that shown in FIG. Further, out of the center of gravity G ₀ , the center of gravity G _W , or the center of gravity G _H , the center of gravity G _W may be located in front of the center line C ₁ .

  When the washing machine 1 is dehydrated, the rotary drum 20 rotates counterclockwise when the washing machine 1 is viewed from the front. Further, when the washing machine 1 is washed, the rotating drum 20 rotates clockwise and counterclockwise when the washing machine 1 is viewed from the front.

  The washing machine 1 includes an upper urging unit 70 and a coil spring 73 as a lower urging unit. The upper urging portion 70 is connected to the upper portion of the water tank 40 and the upper portion of the outer box 10. The upper part of the water tank 40 is a part above the center of the water tank 40 in the height direction H. In the washing machine 1, the upper urging portion 70 is connected to the peripheral wall 48 of the water tank 40 and the support portion 12a. The support portion 12 a is attached to the trunk portion 12 and is disposed on the inner surface of the top plate 13. The upper biasing portion 70 has a coil spring 71 and a coil spring 72. One end of the coil spring 71 is attached to the front end of the peripheral wall 48, and the other end is attached to the support portion 12a. The coil spring 71 urges the water tank 40 obliquely rearward and upward. One end of the coil spring 72 is attached to the peripheral wall 48 at the rear portion of the water tank 40, and the other end is attached to the vicinity of the other end of the coil spring 71 in the support portion 12a. The coil spring 72 urges the water tank 40 diagonally forward and upward. As described above, the upper biasing portion 70 biases the water tank 40 forward and backward. In the washing machine 1, the support portion 12a has a plate shape. However, the shape of the support portion 12a is not particularly limited, and the material of the support portion 12a is not particularly limited.

  The coil spring 73 is connected to the front lower portion of the water tank 40 and a member disposed inside the front surface 121 of the outer box 10. One end of the coil spring 73 is attached to a sheet metal 75 connected to the front surface 121 of the outer box 10, and the other end is attached to a pedestal 74 provided on the peripheral wall 48 at the lower part of the water tank 40. The sheet metal 75 is disposed behind the front surface 121 and below the opening 41 of the water tank 40. Thus, the coil spring 73 is disposed inside the outer box 10 so as to pull the water tank 40 obliquely upward and forward toward the outer box 10 via the sheet metal 75. The coil springs 71, 72, and 73 are not limited to coil springs, and may be other general urging means.

  In the washing machine 1, the posture of the water tub 40 changes in the washing process, the rinsing process, and the dewatering process based on the amount of laundry and water put in the water tank 40 and the rotating drum 20. In addition, when the rotary drum 20 rotates, a load based on the weight of the laundry and water is applied to at least the front vibration isolation member 61 and the rear vibration isolation member 62.

If the center of gravity of the system are relatively positioned in front as in the case for example where system center-of-gravity of is located in front of the center line C ₁ is a water tank 40 and the rotary drum 20 shown in FIG. 3, the front antivibration The member 61 and the base 45 tend to rotate counterclockwise around the vicinity of the connection position. Also, when the center of gravity of the system is located in a relatively backward, as in the case for example where system center-of-gravity of is positioned rearward of the center line C ₂ is the water tank 40 and the rotary drum 20 shown in Figure 3, after There is a tendency to rotate clockwise around the vicinity of the connection position between the side anti-vibration member 62 and the base 46.

  Furthermore, when weight is added to the system, the rods 65 of the front side vibration isolation member 61 and the rear side vibration isolation member 62 sink into the damper 63, so that the water tank 40 and the rotary drum 20 are displaced downward. However, in the washing machine 1, even when the water tank 40 and the rotary drum 20 tend to be displaced downward by biasing the coil spring 73 so as to pull the water tank 40 obliquely upward, the water tank 40 and the rotary drum 20 It is possible to suppress a change in posture. Thus, by suppressing the downward displacement of the front portion of the water tank 40, deformation of the packing 44 can be suppressed and damage can be prevented.

Meanwhile, a range where the center of gravity of the system is moved between the time of dehydration of the rated load condition and when the unloaded state of the washing machine in 1, for example, a washing machine 1, the position of the center line C ₁ with respect to the longitudinal direction is within a between the position of the center line C ₂ and. Thereby, in the washing machine 1, the change of the attitude | position of the water tank 40 can be prevented irrespective of the quantity of a laundry and water. Further, even when the center of gravity of the system moves in the front-rear direction, the front-side vibration isolating member 61 and the rear-side anti-vibration member 62 that are arranged at a predetermined interval with respect to the front-rear direction can be used as a front support member for the system. Since the position of the center of gravity of the system is always located between the vibration isolation member 61 and the rear vibration isolation member 62, it is possible to suppress complication of vibration of the system when the rotary drum 20 rotates. Therefore, the vibration of the system when the rotary drum 20 rotates can be reduced. Furthermore, the coil spring 73 biases the water tank 40 obliquely upward in the forward direction, thereby reducing the vibration of the system including the water tank 40 and the rotating drum 20 together with the vibration isolation mechanism 6.

  Further, the coil spring 73 biases the water tank 40 obliquely upward in the forward direction so that the front lower portion of the water tank 40 and the front of the outer box 10 are compared with the case where the water tank 40 is pushed from below the water tank 40. The front lower part of the water tank 40 can be efficiently urged between the parts. Furthermore, since there is no other member that urges the water tank 40 from below between the front lower part of the water tank 40 and the bottom plate 11 of the outer box 10, the front lower part of the water tank 40 and the bottom plate 11 of the outer box 10 The space between can be used effectively.

  Below, operation | movement of the washing machine 1 is demonstrated with reference to FIG.

  First, the user opens the outer door 18, puts laundry into the rotary drum 20 through the opening 15, and then closes the outer door 18. The detergent used for washing is put in the detergent case 16 (see FIG. 1). If necessary, the user puts a finish into the detergent case 16. The user may put the finishing agent in the middle of the washing process or the rinsing process. The washing machine 1 may be provided with a finish case (not shown) separately from the detergent case 16.

  Next, the user operates the operation unit 17 to select a washing condition and a drying condition. Based on the operation of the operation unit 17 by the user, the operation unit 17 transmits a control signal to the control unit, whereby the control unit controls each member of the washing machine 1. For example, a washing process, a rinsing process, and a dehydrating process are performed by the control unit according to the washing condition and the drying condition selected by the user.

  First, the washing process will be described. When the user presses the start button of the operation unit 17, the outer door 18 and the water supply valve (not shown) are controlled by the control unit. Thereby, the outer door 18 is locked, and tap water is supplied into the water tank 40 by opening the water supply valve. At this time, water in which the detergent contained in the detergent case 16 is mixed is supplied to the water tank 40.

  When it is detected by a water level sensor (not shown) that water has been supplied to the water tank 40 to a predetermined water level, the water supply valve is closed. Subsequently, a circulation pump (not shown) is driven. The water supplied into the rotary drum 20 through the water tank 40 passes through a predetermined flow path from the water tank 40 by the driving of the circulation pump, and rotates in a shower form from a circulating water outlet (not shown) directed into the rotary drum 20. It is returned into the rotary drum 20 by being injected into the rotary drum 20. Further, the water in the rotary drum 20 passes through the small hole 24 again and circulates between the water tank 40 and a predetermined flow path. When a predetermined time elapses among the time during which the circulation pump is driven, the control unit performs control so that the drive of the circulation pump is stopped.

  Next, the rotating drum 20 is rotated by the motor 5 in accordance with the rotation chart for the washing process. In the washing machine 1, the rotating drum 20 rotates at about 50 rpm, for example. Regarding the rotation chart of the rotating drum 20, a plurality of different rotation speeds, rotation cycles, reversal cycles, etc., depending on the washing step, the rinsing step, the dehydration step, or the type of laundry and the washing drying course. The rotation chart is preset. The rotation chart is programmed to be selected by the user or automatically.

  When the motor 5 rotates forward and backward, the rotating drum 20 also rotates forward and backward in the same manner. That is, when the washing machine 1 is viewed from the front, the rotary drum 20 rotates clockwise and counterclockwise. As the rotating drum 20 rotates, the laundry in the rotating drum 20 is lifted to the baffle 26. However, the laundry leaves the inner peripheral wall surface of the rotating drum 20 and does not rotate, but falls downward during the rotation. Such an operation is repeated while the rotary drum 20 rotates. As a result, the laundry is stirred inside the rotary drum 20. Thus, stirring the laundry is called tumbling. The tumbling is continued for about 10 minutes. In this way, the washing process is performed using a so-called tapping effect. Note that the circulation pump may be driven during this washing process. When the washing process ends, the water in the water tank 40 is discharged out of the outer box 10 through a drainage section (not shown).

  After the drainage is completed, an intermediate dehydration process is performed. In this process, the rotary drum 20 rotates at a high speed on the rotation chart for the intermediate dehydration process. In the intermediate dehydration process, the water contained in the laundry is discharged from the rotary drum 20 to the water tank 40 through the small holes 24 by the centrifugal force generated by the rotation of the rotary drum 20. The water discharged into the water tank 40 flows downward along the inner wall surface of the water tank 40 and is discharged out of the outer box 10 through the drainage part.

  When the intermediate dewatering process is completed, the program moves from the intermediate dewatering process to the rinsing process. In the rinsing process, the water supply valve is opened and tap water is supplied to the water tank 40. When the water level sensor detects that water has been supplied to the water tank 40 to a predetermined water level, the water supply valve is closed. After the water supply valve is closed, the control unit controls the circulation pump so that the circulation pump is driven for a predetermined time. When the predetermined time has elapsed, the control unit stops driving the circulation pump. Thereafter, the rotating drum 20 rotates according to the rotation stroke rotation chart. Note that the circulation pump may be driven during the rinsing process.

  After the intermediate dewatering process and the rinsing process are repeated a plurality of times, the program moves from the rinsing process to the final rinsing process. In the final rinsing process, the water supply valve is opened, and water containing the soft finish is supplied to the water tank 40.

  After a predetermined number of rinsing strokes, a dehydration stroke is performed. When the final rinsing process is completed, the rinsing liquid is discharged from the water tank 40 to the outside of the outer box 10. After the drainage is completed, the final dewatering process is performed so that the rotary drum 20 rotates at a high speed of 1000 rpm, for example, according to the rotation chart for the final dewatering process. In the final dewatering process, the rinse liquid contained in the laundry is discharged into the water tank 40 through the small holes 24 by the centrifugal force generated by the rotation of the rotating drum 20, as in the intermediate dewatering process. After a predetermined time has elapsed since the start of the dehydration process, the control unit cuts off power to the motor 5 and performs a stop process.

  As described above, since the liquid balancer 30 rotates around the rotation axis R integrally with the rotary drum 20, when the rotary drum 20 rotates at a relatively high speed in the intermediate dewatering process and the final dewatering process, the liquid balancer 30 also rotates with the rotating drum 20 at a relatively high speed.

  As described above, the washing machine 1 includes the rotating drum 20, the water tank 40, the outer box 10, the front vibration isolation member 61, and the rear vibration isolation member 62. The rotating drum 20 has a bottomed cylindrical shape having an opening 21 that opens toward the front and a bottom 22 that is disposed to face the opening 21. The rotating drum 20 rotates about a rotation axis R extending in a direction inclined from the horizontal direction. The water tank 40 covers the rotary drum 20. The outer box 10 accommodates the water tank 40 and the rotating drum 20. The front vibration isolation member 61 and the rear vibration isolation member 62 support the water tank 40 upward. Further, the front side vibration isolation member 61 and the rear side vibration isolation member 62 have the same configuration. Further, with respect to the front-rear direction, a predetermined interval is provided between the front vibration isolation member 61 and the rear vibration isolation member 62.

  According to the washing machine 1, the rotation axis R extends in a direction inclined from the horizontal direction. Therefore, in the washing machine 1, the position of the center of gravity of the system constituted by the rotary drum 20, the water tank 40, the motor 5, and the liquid balancer 30 at least before and after the laundry is put into the rotary drum 20. Will change. However, a predetermined interval is provided between the front vibration isolation member 61 and the rear vibration isolation member 62 that support the water tank 40 in the front-rear direction. As a result, the water tank 40 is stably supported by the front vibration isolation member 61 and the rear vibration isolation member 62 in the front-rear direction. Therefore, even when the center of gravity of the system moves in the front-rear direction, the front-side vibration isolation member 61 and the rear-side vibration isolation member 62 provide a space between the front-side vibration isolation member 61 and the rear-side vibration isolation member 62 as the system support member. Further, since the center of gravity of the system is always located, it is possible to suppress complication of vibration of the system when the rotary drum 20 rotates. Therefore, the vibration of the system when the rotary drum 20 rotates can be reduced.

  Therefore, according to the present embodiment, the washing machine 1 includes the front side vibration isolation member 61, the rear side vibration isolation member 62, the rotary drum 20, and the water tub 40 having the same configuration. It is possible to provide the washing machine 1 capable of suppressing the complexity of the vibration of the system when rotating. Further, the front side vibration isolation member 61 and the rear side vibration isolation member 62 have the same configuration. Therefore, according to this embodiment, it is possible to reduce the cost of the vibration isolation mechanism 6 having the front vibration isolation member 61 and the rear vibration isolation member 62 and the cost of the washing machine 1.

  In the washing machine 1, the predetermined distance between the front vibration isolation member 61 and the rear vibration isolation member 62 is such that the center of gravity of the system is when the washing machine 1 is in an unloaded state and when the washing machine 1 is operated in a rated load state. The range that moves in the front-rear direction is included.

  According to this configuration, even when the center of gravity of the system moves in the front-rear direction between when the washing machine 1 is in an unloaded state and when the washing machine 1 is operated in the rated load state, Since the center of gravity is located between the vibration member 61 and the rear vibration isolation member 62, it is possible to suppress complication of vibration of the system. Furthermore, when the washing machine 1 is dehydrated, the rotary drum 20 rotates at a higher speed than other processes such as washing and rinsing. Therefore, according to this configuration, it is possible to suppress complication of vibration of the system when the rotating drum 20 rotates at a relatively high speed.

  In the washing machine 1, as shown in FIG. 3, the rotation axis R is inclined from the horizontal direction so that the rear side of the rotation axis R is located below the front side. When the washing machine is dehydrated, the rotary drum 20 rotates counterclockwise when the washing machine 1 is viewed from the front. Further, in the front view of the washing machine 1, the front vibration isolation member 61 is disposed on the left side, and the rear vibration isolation member 62 is disposed on the right side.

  When the rotary drum 20 rotates counterclockwise in front view of the washing machine 1, a load due to centrifugal force that pushes the rotary drum 20 downward is applied to the left side of the entire system. Further, the rotation axis R is inclined so that the rear side of the rotation axis R is positioned below the front side. Therefore, in the front view of the washing machine 1, the front part on the left side of the entire system is likely to be greatly displaced downward than the rear part on the left side. However, in the washing machine 1, the front vibration isolation member 61 is disposed on the left side and the rear vibration isolation member 62 is disposed on the right side when the washing machine 1 is viewed from the front. Therefore, even when the rotating drum 20 rotates counterclockwise when the washing machine 1 is viewed from the front, the water tank 40 can be stably supported by the front vibration isolating member 61 disposed on the left side when viewed from the front. Thereby, the vibration of the system when the rotating drum 20 rotates can be reduced. As a result, it is possible to suppress complication of vibration of the system when the rotary drum 20 rotates.

  The washing machine 1 also includes a rotating drum 20, a water tub 40, an outer box 10, a front vibration isolating member 61, a rear vibration isolating member 62, an upper biasing portion 70, and a coil spring 73. The upper biasing portion 70 has a coil spring 71 and a coil spring 72. The rotating drum 20 has a bottomed cylindrical shape and has an opening 21 that opens toward the front. The rotating drum 20 rotates about the rotation axis R. The rotation axis R extends in a direction inclined from the horizontal direction. The water tank 40 has an opening 41 arranged in front of the opening 21 of the rotary drum 20. The water tank 40 covers the rotary drum 20. The outer box 10 accommodates the water tank 40 and the rotating drum 20. The front vibration isolation member 61 and the rear vibration isolation member 62 support the water tank 40 upward from the bottom plate 11 of the outer box 10. One end of the coil spring 71 is attached to the front end of the peripheral wall 48, and the other end is attached to the support portion 12a. The coil spring 71 urges the water tank 40 obliquely rearward and upward. One end of the coil spring 72 is attached to the peripheral wall 48 at the rear portion of the water tank 40, and the other end is attached to the vicinity of the other end of the coil spring 71 in the support portion 12a. The coil spring 72 urges the water tank 40 diagonally forward and upward. The coil spring 73 is connected to a front lower portion of the water tank 40 and a member disposed on the inner side of the front surface 121 of the outer box 10 and biases the water tank 40 forward and obliquely upward.

  According to the washing machine 1, the upper urging portion 70, the coil spring 73, the front side vibration isolation member 61, and the rear side vibration isolation member 62 can prevent the posture of the water tank 40 from changing. Therefore, according to the washing machine 1, it is possible to suppress deformation of the parts arranged between the outer box 10 and the water tank 40 during operation of the washing machine 1. In the washing machine 1, an upper urging portion 70, a coil spring 73, a front vibration isolation member 61, and a rear vibration isolation member 62 are disposed between the outer box 10 and the water tank 40. That is, according to the washing machine 1, the upper urging portion 70, the coil spring 73, the front vibration isolation member 61, and the rear vibration isolation member 62 are suppressed from being deformed during the operation of the washing machine 1. It is possible to hold 40 postures more appropriately.

  Further, the coil spring 73 biases the front lower portion of the water tank 40 obliquely upward to the front, so that a change in posture such that the front lower portion of the water tank 40 moves downward can be suppressed. Thereby, in the system including the rotating drum 20 and the water tank 40, the inclination of the rotation axis R is suppressed from changing, so that the center of gravity is difficult to move forward. As described above, since the change in the inclination of the rotation axis R is suppressed and the center of gravity is difficult to move, the vibration of the system is difficult to be complicated. Therefore, the vibration of the system can be easily detected, and the washing machine 1 can be easily controlled with respect to the vibration.

  In the washing machine 1, the outer box 10 has an opening 15 disposed in front of the opening 41 of the water tank 40. Furthermore, the washing machine 1 further includes an outer door 18 that opens and closes the opening 41 of the water tank 40 together with the opening 15 of the outer box 10. The outer door 18 has a protruding portion 82. The protrusion 82 protrudes from the front to the rear when the outer door 18 closes the opening 15 of the outer box 10 and the opening 41 of the water tank 40. A part of the protrusion 82 is disposed inside the water tank 40 when the outer door 18 closes the opening 15 of the outer box 10 and the opening 41 of the water tank 40.

  According to this configuration, the outer door 18 opens and closes the opening 41 of the water tank 40 together with the opening 15 of the outer box 10. The outer door 18 has a protruding portion 82 that protrudes from the front toward the rear when the outer door 18 closes the opening 15 of the outer box 10 and the opening 41 of the water tank 40. A part of the protrusion 82 is disposed inside the water tank 40 when the outer door 18 closes the opening 15 of the outer box 10 and the opening 41 of the water tank 40. On the other hand, the washing machine 1 can suppress deformation of the parts arranged between the outer box 10 and the water tank 40 during the operation of the washing machine 1. Further, the coil spring 73 biases the front lower portion of the water tank 40 obliquely upward and forward, so that the laundry is pushed by the outer door 18 when the laundry is positioned between the water tank 40 and the outer door 18. It can suppress that 40 moves to back and the space of the front-back direction between the opening part 15 of the outer case 10 and the opening part 41 of the water tank 40 further spreads. Therefore, the laundry enters the space in the front-rear direction between the opening 15 of the outer box 10 and the opening 41 of the water tank 40, or the laundry is sandwiched between the protrusion 82 and the opening 41 of the water tank 40. By doing so, it is possible to prevent the laundry or the parts of the washing machine 1 from being damaged, and it is possible to perform washing reliably.

  The washing machine 1 further includes a packing 44 disposed between the opening 15 of the outer box 10 and the opening 41 of the water tank 40.

  According to the washing machine 1, the parts arranged between the outer box 10 and the water tank 40 can be prevented from being deformed during the operation of the washing machine 1. Therefore, it is possible to avoid the packing 44 disposed between the opening 15 of the outer box 10 and the opening 41 of the water tank 40 from being damaged.

  The embodiment disclosed above should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above embodiments but by the scope of claims, and includes all modifications and variations within the meaning and scope equivalent to the scope of claims.

  1: Washing machine, 10: outer box, 20: rotating drum, 21: opening, 22: bottom, 40: water tank, 61: front vibration isolating member, 62: rear vibration isolating member, R: rotation axis

Claims (2)

A washing tub that opens forward and has a bottom opposite to the opening and is supported rotatably about a rotation axis whose rear side is lower than the front side;
A water tank covering the washing tub;
An outer box for housing the water tub and the washing tub ,
The water tank is supported by two vibration isolation members,
The anti-vibration member has a first anti-vibration member that supports the right side of the water tank upward with respect to the rotation axis in front view, and a first anti-vibration member that supports the left side of the water tank upward with respect to the rotation axis. A washing machine having two anti-vibration members,
A washing machine in which a vibration isolating member on the side where a load pushing the washing tub downward during dehydration rotation is generated is provided on the front side.   The washing machine according to claim 1, wherein the first vibration isolation member and the second vibration isolation member spaced apart in the front-rear direction extend in a substantially vertical direction in a side view.

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