JP2007167263A - Drum-type washing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce load applied to bearings and to improve durability of the bearings even if a drum oscillates due to unbalanced laundry while the drum rotates at high speed for dehydration. <P>SOLUTION: Baffles 40 are fitted to an inner peripheral face of the drum 13 so that an extending direction of each peak part of a chevron-shaped section diagonally crosses a center axis C of the drum 13. During dehydration operation, the drum 13 is driven and rotated in the same direction as the inclination of the extensional direction (clockwise in the figure). As rotation speed of the drum 13 increases, laundry in the drum 13 is raised by the baffles 40 while the laundry is moved toward the rear of the drum 13 following the inclination of the peak parts. Thereby, even if eccentric load is generated by the laundry unbalanced in a peripheral direction of the drum 13, a position of the eccentric load is relatively adjacent to the bearings 16 so as to reduce load applied to the bearings 16. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a drum type washing machine.

  In general, a drum-type washing machine has a configuration in which a cylindrical drum with a circumferential surface is rotatably arranged around a horizontal axis or an inclined axis inside an outer tub disposed in a substantially box-shaped casing. The laundry is housed in the drum, and the laundry is washed by rotating the drum with water stored in the outer tub. Moreover, in the drum type washing machine having a drying function, when washing is completed, the laundry can be dried by feeding heated air into the outer tub while slowly rotating the drum. Many of such drum-type washing machines are provided with a clothing input port for putting laundry in and out of the drum on the front surface of the housing, and a door for opening and closing the clothing input port. When the door is opened, the interior of the drum can be seen through an opening formed in the front surface of the outer tub and a clothing input opening provided in the front end surface of the drum.

  In such a drum-type washing machine, a baffle is protruded from the inner peripheral surface of the drum so that it is easy to wash or when the laundry is stirred in the drum or when the position of the laundry is changed during drying. Conventionally, various proposals have been made on the shape of a baffle in order to appropriately stir the laundry. For example, in the drum-type washing machine described in Patent Document 1, a baffle having a shape in which the extending direction of the top portion of the mountain-shaped cross section is not the direction of the rotation axis of the drum but the direction oblique thereto is disclosed. Thus, when the drum is driven reversely to the left and right, the laundry easily moves back and forth along the direction of the rotation axis of the drum.

  Further, in Patent Document 2, in a drum-type washing machine in which a drum is rotatably provided around an axis that is inclined upward, the extending direction of the top of the mountain-shaped cross section is the rotation axis of the drum as in Patent Document 1. The baffle has a shape that is not oblique to the direction but oblique to it, and when washing the laundry, the baffle acts to promote the movement of the laundry to the front side of the drum, which is above the slope. Is avoided from moving to the rear side of the drum.

  By the way, in the drum-type washing machine described in Patent Document 2, the drum is cantilevered by a shaft body, and the rear end surface to which the shaft body is attached is positioned below the slope. Therefore, if there is an eccentric load in the circumferential direction of the drum due to the uneven distribution of the laundry lifted to the front side of the drum during the washing operation as described above, the position of the eccentric load becomes relatively far from the bearing. When the drum is rotated at a high speed, a load applied to the bearing is increased, and the bearing is easily worn or damaged. In the drum type washing machine described in Patent Document 2, no consideration is given to such a problem.

  In such a drum-type washing machine, an annular balancer is attached to the outer peripheral edge of the front end surface of the drum in order to suppress vibration during dehydration, but when the drum vibrates during dehydration, the balancer itself and It is necessary to avoid as much as possible that the member which fixes a balancer contacts the inner wall surface of an outer tank. For this reason, it is necessary to provide an excessive gap between the inner peripheral wall surface of the outer tub and the outer peripheral wall surface of the drum. As a result, the diameter of the outer tub can be reduced while ensuring the washing / drying capacity. It has been difficult to increase the wash / dry capacity without increasing the size of the outer tub. Moreover, since it is necessary to attach a balancer to the outer peripheral edge portion of the drum front end surface provided with the clothing input port, it is difficult to ensure a large clothing input port.

  In addition, as described in Patent Document 3, in a conventional drum-type washing machine, a drying shelf on which a drying target is placed in a drum in order to dry clothes, cloth sneakers, etc. Some are installed and can be statically dried by supplying warm air into the drum without rotating the drum. In such a drum-type washing machine, if the user instructs the dehydration operation while the drying shelf is installed in the drum, the drying shelf rolls in the drum and generates a loud noise. There was a possibility that the inner member might be damaged.

JP 2004-57657 A JP 2005-65921 A JP 2005-152476 A

  The present invention has been made to solve the above-mentioned problems, and a first object of the present invention is to provide a drum-type washing machine having a drum rotatably provided around an inclined axis, when the drum is dehydrated. An object of the present invention is to provide a drum type washing machine capable of reducing a load applied to a bearing when rotating at a high speed.

  The second object of the present invention is to improve the size of the outer tub while ensuring the washing / drying capacity by devising the structure around the portion where the annular balancer is attached to the outer peripheral edge of the drum front end face. It is an object of the present invention to provide a drum-type washing machine that can reduce the size of the machine.

  The third object of the present invention is to devise a structure for attaching an annular balancer to the outer peripheral edge of the front end surface of the drum, thereby reducing the size of the clothing inlet while ensuring a sufficient internal volume of the balancer. The object is to provide a drum-type washing machine that can be enlarged.

  The fourth object of the present invention is to provide a drum-type washing machine in which a drying shelf is installed in the drum so as to perform stationary drying, even if a user mistakenly instructs a dehydration operation or the like. An object of the present invention is to provide a drum type washing machine capable of preventing the generation of sound and damage of members in the drum.

The first invention made to achieve the first object has an outer tub, a bearing provided in the outer tub, a shaft rotatably supported by the bearing, and a circumferential cylindrical shape. A drum having one end of the shaft fixed to a rear end surface thereof, and the drum is disposed in a slanting front so that the front end surface is positioned higher than the rear end surface. ,
A baffle provided on the inner peripheral surface of the drum and having a top portion extending in a direction oblique to the axial direction of the rotation;
A motor that drives the shaft to rotate the drum;
Control means for controlling the motor so that the rotation direction is the same as the inclination direction of the top of the baffle when the drum is rotated at a high speed in order to dehydrate laundry stored in the drum;
It is characterized by having.

  In the drum type washing machine according to the first aspect of the invention, during the dehydrating operation, the control means controls the motor so that the drum rotates at a high speed in the same direction as the inclination direction of the top of the baffle. In the process of increasing the rotational speed of the drum, the baffle exerts a force that pushes the laundry downwardly, that is, behind the drum. As a result, the laundry as a whole tends to gather on the rear side in the drum, that is, on the end face side to which the shaft body is attached. Therefore, the load of the entire drum moves to a position relatively close to the bearing, and even when swinging vibration occurs due to the laundry being displaced in the circumferential direction of the drum during dehydration, the load applied to the bearing can be reduced. Can do.

  In the drum type washing machine according to the first aspect of the present invention, preferably, the drum type washing machine includes a warm air supply means for supplying warm air to the inside from the front end surface side in order to dry the laundry accommodated in the drum, and the control When the drying operation is performed by operating the hot air supply means, the time for rotating the drum in the direction opposite to the tilt direction of the top of the baffle while reversing the rotation direction of the drum from the time for rotating in the same direction. It is preferable that the motor is controlled by setting a longer time.

  When the drum is rotated in the direction opposite to the direction of inclination of the top of the baffle, the baffle lifts the laundry upward, i.e., the front of the drum, and conversely, the drum is rotated in the same direction as the inclination of the top of the baffle. The baffle moves the laundry to the lower tilt side of the drum, that is, the rear side. In any case, the baffle promotes the stirring of the laundry in the drum, but since the former time is set longer than the latter time, the laundry is on the side closer to the hot air supply port by the hot air supply means. Is easy to move. Thereby, the laundry is easily exposed to warm air, and the drying efficiency can be increased. Further, since it is possible to prevent the laundry from clinging to the rear side in the drum during drying, it is possible to reduce wrinkles on the laundry.

The second invention made to achieve the second object is an outer tub, a cylindrical drum that is rotatably disposed in the outer tub, and an outer peripheral edge of the end surface of the drum. A drum-type washing machine comprising an annular fluid balancer,
The fluid balancer is fixed from the outside of the cylindrical body of the drum by a screw that penetrates the plate of the body, and the inner wall surface of the body of the outer tub faces the head of the screw as the drum rotates. It is characterized in that the annular portion has a shape recessed outward.

  According to the drum type washing machine according to the second aspect of the present invention, the inner wall surface of the outer tub body is concave at the portion where the head of the screw for fixing the balancer protrudes outward from the drum body. A space between them can be secured, and the head portion of the screw can be prevented from contacting the inner wall surface of the outer tub even when the drum swings during dehydration. Further, since the inner diameter of the outer tub body constituting the outer tub can be reduced in the portion other than the concave shape, the space of the casing can be reduced by reducing the width of the casing. Or, conversely, since the diameter of the drum body can be increased by making the inner diameter of the outer tub cylinder the same, the washing / drying capacity can be increased without changing the size of the casing. In addition, since the concave portion is formed in the outer tub body at a position near the clothing input opening of the outer tub, the strength in the vicinity of the opening can be increased.

The third invention made to achieve the third object, an outer tub, and a drum having a cylindrical surface around the outer tub arranged rotatably around an axis extending in the front-rear direction; A drum-type washing machine comprising: an annular fluid balancer attached to the outer peripheral edge of the front end surface on which the clothing input port of the drum is formed;
The fluid balancer has an annular ridge on an inner peripheral wall surface, and the front end surface of the drum is formed of an annular plate member having a concave cross section surrounding a clothing insertion port, and the ridge of the fluid balancer is the annular plate. It is characterized by being fitted into the concave section of the annular plate member in contact with the end portion on the inner peripheral side of the member.

  According to the drum type washing machine according to the third aspect of the invention, since the inner side of the inner peripheral surface of the annular balancer is the clothing input port of the drum, the balancer capacity is ensured while ensuring a large size clothing input port. Can do. Since the balancer has a large volume, the amount of eccentric load that can correct the eccentric load due to the offset of the laundry at the time of dehydration becomes large, and vibration and noise at the time of dehydration can be reduced accordingly. In addition, since the clothes insertion opening can be made large, it becomes easy to put in and out the laundry into the drum, and it is easy to look into the drum, leading to a reduction in forgetting to take the laundry.

A fourth invention made to achieve the fourth object is an outer tub, a bearing provided in the outer tub, a shaft rotatably supported by the bearing, and a circumferential cylindrical shape. A drum-type washing machine comprising a drum having one end of the shaft fixed to a rear end surface thereof, and capable of performing a drying operation in a state where a drying shelf for stationary drying is mounted in the drum.
A cap mounted at the inner center of the drum rear end surface so as to cover the heads of a plurality of screws screwed from the inside of the drum to fix the shaft body to the rear end surface of the drum; A holding hole is formed in the center of the cap, a holding shaft inserted into the holding hole is provided in the drying shelf, and the holding shelf is inserted into the holding hole to hold the drying shelf in the drum. It is characterized by that.

  In the drum type washing machine according to the fourth aspect of the invention, the drying shelf is held by inserting the holding shaft into the holding hole of the cap with respect to the drum, and the holding hole exists on the rotating shaft of the drum. Even when the drum is driven to rotate with the drying shelf installed, the holding shaft and the inner wall of the holding hole only rub against each other, and the drying shelf maintains its position. Therefore, the drying shelf does not roll in the drum, and abnormal noise and abnormal vibration can be prevented. Further, since the holding shaft is inserted into the holding hole when installing the drying shelf in the drum, the installation is easy.

  As described above, according to the drum type washing machine according to the first aspect, even when the laundry is unevenly distributed in the circumferential direction of the drum when the drum is driven to rotate at high speed, the load on the bearing is reduced. The durability of the bearing can be improved. Further, since the vibration of the drum swing is relatively small, it is also effective in reducing vibration and noise.

  According to the drum type washing machine according to the second aspect of the invention, the outer diameter of the outer tub can be made relatively small with respect to the same washing / drying capacity, so that the size of the housing can be reduced. Further, if the casings are the same size, the drum can be made larger to increase the washing / drying capacity. Furthermore, the strength of the peripheral edge of the opening of the outer tub for putting in and out the clothes can be increased.

  According to the drum type washing machine according to the third aspect of the present invention, it is possible to increase the vibration suppressing effect during the dehydrating operation by increasing the volume of the fluid balancer. In addition, the clothes input port of the drum can be enlarged to facilitate loading and unloading of laundry into the drum.

  According to the drum type washing machine according to the fourth aspect of the present invention, even when the drum is rotated accidentally while the drying shelf for stationary drying is installed in the drum, the generation of abnormal noise and vibration can be prevented, and the drying can be performed. It is possible to prevent the members in the shelf and the drum from being damaged.

  Hereinafter, a drum type washing and drying machine according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an external side view of the drum type washing and drying machine according to the present embodiment with the door opened, FIG. 2 is an external perspective view of the drum type washing and drying machine of the present example, and FIG. 3 is a drum type of the present example. FIG. 4 is a schematic side vertical sectional view at a position where the drying path appears in the drum type laundry dryer of the present embodiment.

  The casing 1 forming the outer shape of the drum type washing and drying machine has a substantially box shape as a whole. As shown in FIGS. 1 and 2, the front surface 1a of the housing 1 is slightly curved from the upper part to the central part and is slightly inclined upward, and a substantially circular clothing input port 1b is provided there. The garment input port 1b is formed and opened and closed by a side-opening type door 2 through which the inside can be seen through. In addition, an operation panel 5 that is elongated to the left and right and on which various operation keys are arranged is provided on the upper portion of the front surface 1a, that is, on the clothes insertion opening 1b, and a drawer-type detergent container 6 is provided on the left side. Similarly, on the right side, a drawer-type dry filter container 7 is installed.

  Moreover, the water supply hose connection port 3 to which the other end of the water supply hose whose one end is connected to the water tap is connected is arranged at the rear left end of the front flat part 1e, and one end of the water supply hose is connected to the bath water in the bathtub. A bath water hose connection port 4 to which the other end of the bath water hose to be immersed is connected is arranged. The water supply hose connection port 3 is formed by exposing a water inlet of a water supply valve 21 described later directly to the upper surface, and the bath water hose connection port 4 is formed by exposing the water inlet of the bath water pump 22 directly to the upper surface. Has been.

  Next, the internal structure will be described with reference to FIGS. 3 and 4. Inside the housing 1, an outer tub 10 having a substantially cylindrical peripheral surface pulls a damper 11 that supports both the left and right sides, and an upper part (not shown). It is supported by a spring so as to freely swing. The front portion of the outer tub 10 is opened in a circular shape relative to the clothing input port 1b of the housing 1, and the opening 10a and the clothing input port 1b are connected by a seal member 12 made of an elastic material such as rubber. Has been.

  Inside the outer tub 10, a drum 13 having a substantially cylindrical shape for accommodating laundry is supported by a main shaft 14 that extends in the front-rear direction and is inclined forward. A clothing input port 13a having a large opening is formed on the front end surface of the drum 13, and when the door 2 is opened, through the opening 10a of the outer tub 10 and the clothing input port 13a of the drum 13 from the upper front side, The inside of the drum 13 can be looked into. Here, the inclination angle θ of the central axis C of the drum 13, that is, the central axis of the main shaft 14 is set to about 15 ° with respect to the horizontal line, but this is an example, and the inclination angle θ is about 10 to 30 °, for example. Is set at an appropriate angle.

  The front end of the main shaft 14 is firmly fixed to the rear side of the rear end surface of the drum 13 and is rotatably supported by a bearing 16 provided on the inner periphery of a bearing fixing member 15 mounted on the rear surface portion of the outer tub 10. . A rotor 172 of a drum motor 17 which is an outer rotor type DC brushless motor is attached to an end portion of the main shaft 14 protruding rearward of the outer tub 10, while a stator side field coil 171 is attached to the bearing fixing member 15. It is fixed. The rotor 172 including the permanent magnet is disposed so as to surround the outer periphery of the stator side field coil 171, and thus the motor 17 has a thin structure in the extending direction of the main shaft 14. The detailed structure will be described later. When a drive current is supplied to the stator-side field coil 171 from a control circuit (not shown), the rotor 172 rotates and the drum 13 is driven to rotate at the same rotational speed as the rotor 172 via the main shaft 14.

  In the upper space in the housing 1, a water supply unit 20 including a water supply valve 21, a bath water pump 22 for supplying bath water, and a detergent charging unit 23 is disposed. The water inlet directed to the upper side of the water supply valve 21 is the water supply hose connection port 3, and the water inlet directed to the upper side of the bath water pump 22 is the bath water hose connection port 4. The detergent charging unit 23 that allows the detergent container 6 to be pulled out is disposed in front of the water supply valve 21, and the water supplied to the detergent charging unit 23 through the water supply valve 21 and the bath water pump 22 mainly passes through the interior of the detergent container 6. As described above, the water is supplied into the outer tub 10 from a water injection port 25 provided at the rear portion of the outer tub 10 through a water injection pipe 24 connected to the bottom of the detergent charging unit 23.

  As described above, the water supplied and stored in the outer tub 10 flows into the drum 13 through the water passage hole 13b. Further, water discharged from the laundry in the drum 13 during dehydration is scattered to the outer tub 10 side through the water passage hole 13b. A drain outlet 26 is provided behind the bottom of the outer tub 10, and the drain outlet 26 is connected to the inlet of the drain valve 27. When the drain valve 27 is opened, the water stored in the outer tub 10 is It is discharged out of the machine through the drain pipe 28.

  This drum type washing and drying machine also has a function of drying the laundry after dehydration. As shown in FIG. 4, an air discharge port 31 is provided at the lower rear surface of the outer tub 10. The ventilation path 32 connected to is connected to an air supply port 36 provided in the upper part of the front surface of the outer tub 10 through the rear, side and upper side of the outer tub 10. In the middle of the ventilation path 32, a drying filter (not shown) housed in a drying filter container 7 that can be drawn forward, a fan 33 that is rotationally driven by a fan motor 34, and a heater 35 for drying are disposed. Has been. Further, an end portion of a cooling water hose (not shown) is connected to the upright portion of the ventilation path 32.

  Thus, during the drying operation, the air flow generated by the fan 33 is heated by the heater 35 and then discharged from the air supply port 36 and supplied into the drum 13. When the heated air passes through the inside of the drum 13, it exchanges heat with the laundry to remove moisture, and flows into the ventilation path 32 through the air outlet 31. Water flows continuously or intermittently through the cooling water hose in the upright portion of the ventilation path 32, and when heated air containing a large amount of water vapor comes into contact with this cooling water, the water vapor is condensed and condensed. Condensed water flows along the cooling wall along the inner wall of the ventilation path 32, flows into the outer tub 10, and is discharged from the drain 26. The dry air from which water vapor has been removed in the air passage 32 passes through the drying filter and circulates through the fan 33 and returns to the heater 35. Foreign matters such as lint, dust and pollen mixed in the air when passing through the drying filter are removed.

  FIG. 10 is a block diagram of the electric system of the drum type washing and drying machine of this embodiment. The control unit 50 is mainly composed of a microcomputer including a CPU, ROM, RAM, timer, and the like. Based on a control program stored in the ROM, each process of washing, rinsing, dehydration and drying is performed. Various controls are performed to perform driving operations. A key input signal is given to the control unit 50 from an operation unit 53 provided on the operation panel 5 in order for a user to give various settings and instructions, and an opening / closing detection signal of the door 2 is supplied from a door switch 55 to a water level sensor. The water level detection signal stored in the outer tub 10 from the temperature sensor 56 corresponds to the water temperature during the easy washing process from the temperature sensor 57, and the temperature detection signal according to the temperature of the air on the outlet side of the drum 13 during drying. Entered. Further, a load driving unit 51 is connected to the control unit 50, and the drum motor 17, the fan motor 34, the drying heater 35, the water supply valve 21, the bath water pump 22, and the drain valve 27 are connected via the load driving unit 51. Etc. are controlled.

  Next, a characteristic configuration of the drum type washing and drying machine of the present embodiment and its operation and operation will be described.

  As shown in FIG. 3, a baffle 40 is provided on the inner peripheral surface of the drum 13 to stir the laundry and accelerate the movement by scraping the laundry as the drum 13 rotates. Three are provided at substantially equal angular intervals in the direction. FIG. 5 is a plan view (a) showing a schematic shape of one baffle 40 and cross-sectional views (b) along the lines A-A ′, B-B ′, and C-C ′. The baffle 40 has a substantially chevron shape in which the top portion 401 extends long, and the extending direction D2 of the top portion 401 crosses at an angle φ with respect to the extending direction D1 of the base portion 402.

  As shown in FIG. 3, the baffle 40 is attached so that the base 402 is substantially parallel to the direction of the central axis C of the drum 13. Therefore, the extending direction D <b> 2 of the top 401 of each baffle 40 is oblique with a predetermined angle φ with respect to the direction of the central axis C of the drum 13. When the drum 13 is rotated in the clockwise direction when viewed from the front, the front side of the drum 13 precedes and the rear side of the drum is delayed with respect to the rotation direction at the top 401 of each baffle 40. Therefore, the baffle 40 exerts a force to move the laundry stored in the drum 13 to the rear side of the drum 13, that is, to the lower side of the drum 13. Conversely, when the drum 13 is rotated counterclockwise when viewed from the front, the baffle 40 moves to the front side of the drum 13, that is, above the inclination of the drum 13 with respect to the laundry stored in the drum 13. Effect.

  The control unit 50 as the control means in the present invention typically controls each unit so as to sequentially execute the rinsing, dehydration and drying processes according to a predetermined program, but the drum 13 is rotated clockwise particularly during the dehydration operation. The drum motor 17 is controlled via the load driving unit 51 so as to rotate at a high speed in the direction (for example, a maximum rotation speed of 1000 rpm). As the rotational speed of the drum 13 increases during dehydration, the laundry in the drum 13 spreads in the circumferential direction of the drum 13 at first, and when the centrifugal force acting on the laundry becomes larger than the weight, each laundry becomes a drum. It sticks to the 13 inner peripheral surface. At that time, since the baffle 40 moves the laundry to the rear side of the drum 13 as a whole, the laundry is arranged so as not to be distantly distributed when viewed in the circumferential direction of the drum 13, but along the central axis C. If you look in the right direction, the laundry will move to the rear side. Accordingly, the position of the eccentric load caused by the deviation of the laundry in the circumferential direction of the drum 13 is a position relatively close to the bearing 16 when viewed in the direction along the central axis C. As a result, even when the drum 13 vibrates due to the eccentric load, the load applied to the bearing 16 is reduced compared with the case where the eccentric load having the same magnitude exists at a position far from the bearing 16, and the durability of the bearing 16 is improved. Can be improved.

  Further, during normal drying except for static drying described later, the control unit 50 drives the fan motor 34 to rotate the fan 33 and energizes the drying heater 35, thereby energizing the drum 13 from the air supply port 36. The drum 13 is driven to rotate at a rotational speed (for example, 40 to 50 rpm) at which warm air is blown into the laundry and the laundry is stirred (that is, the fan 33, the fan motor 34, and the drying heater 35 are used in the present invention). Equivalent to hot air supply means). At that time, the control unit 50 controls the drum motor 17 via the load driving unit 51 so that the rotation driving pattern of the drum 13 is as shown in FIG. That is, the drum 13 is rotated in the left-right direction instead of one direction, but the counterclockwise rotation time t2 is set longer than the clockwise rotation time t1. By rotating the drum 13 left and right, the laundry can be evenly stirred to make it difficult to cause uneven drying. However, as described above, especially when the drum 13 is rotated counterclockwise, The movement toward the front side, that is, the side close to the air supply port 36 is promoted. Therefore, each laundry is easily exposed to warm air, and it is also possible to prevent the laundry from clumping below the slope of the drum 13, so that the laundry can be efficiently dried and wrinkle generation can be suppressed.

  FIG. 6 shows details of a part indicated by B in FIG. 3 as another feature. When the drum 13 is rotated at a high speed during dehydration, if the laundry is shifted in the circumferential direction of the drum 13, the drum 13 oscillates, and in order to suppress this, the clothes inlet 13 a on the front end surface of the drum 13 is suppressed. An annular fluid balancer 41 is attached to the outer peripheral edge of each of the two.

  As shown in FIG. 6, four flow paths 413 along the circumferential direction are formed in the fluid balancer 41, and a predetermined amount of liquid is sealed in each flow path 413. Although not shown, a partition plate is provided in each flow path 413 at a predetermined angle in the circumferential direction (for example, about 60 °), and the liquid in each flow path 413 flows between the partition plate and the fluid balancer 41. It can be freely distributed through a gap between the inner surface. As a result, the liquid in the fluid balancer 41 is vibrated in substantially the same phase as the vibration caused by the deviation of the laundry while the drum 13 is rotating at a relatively low rotational speed (for example, about 100 rpm). When the rotational speed of the drum 13 exceeds a relatively high speed (for example, about 300 rpm), the vibration is unevenly distributed so as to generate a vibration having a phase opposite to the vibration caused by the deviation of the laundry. Therefore, when the drum 13 rotates at a high speed, the vibration caused by the deviation of the laundry can be canceled by the vibration due to the uneven distribution of the liquid in the fluid balancer 41, and the vibration of the drum 13 can be suppressed.

  The fluid balancer 41 is a unit in which two members made of synthetic resin are butted and integrated by vibration welding. In order to ensure the area of the butting at the time of welding on the inner and outer wall surfaces of both members, The flanges of both members are integrated by welding to form ribs 411 and 412. The drum 13 includes a body member 131 in which a stainless steel plate member is formed in a cylindrical shape, and an annular front end surface member (corresponding to the annular plate member in the present invention) 132 that forms a front end surface. The cross section has a substantially U-shaped cross section, and the edge portion on the inner peripheral side is a curled portion 132a wound in the outer peripheral direction in a substantially semicircular shape. The outer peripheral side edge portion of the front end surface member 132 and the front edge end portion of the body member 131 are joined by caulking and fixed by screws 42 screwed from the outside of the body member 131.

  A recess having a substantially U-shaped cross section of the front end surface member 132 is configured such that about half of the fluid balancer 41 is accommodated. When the fluid balancer 41 is accommodated in the recess, the outer rib 411 contacts the caulking portion 133. The inner peripheral side rib 412 which is in contact with the protrusion in the present invention contacts the curled portion 132a. The fluid balancer 41 thus housed in the recess is fixed to both the members 131 and 132, that is, to the drum 13 by screws 42 that join the front end surface member 132 and the body member 131. Yes.

  Since the inner peripheral side of the curled portion 132a of the front end surface member 132 is a clothing input port 13a, the peripheral portion of the clothing input port 13a is reinforced by the fluid balancer 41, and the clothing input port 13a is widened. Even if secured, high strength can be obtained. Further, since almost the entire peripheral edge of the clothing input port 13a can be used as the fluid balancer 41, the volume of the fluid balancer 41 can be increased. Since the performance of canceling the eccentric load of the fluid balancer 41 as described above depends on the internal volume of the flow path 413 of the fluid balancer 41 and the amount of the liquid sealed therein, the performance of canceling the eccentric load can be improved. Can be suppressed.

  As shown in FIG. 6, since the head of the screw 42 protrudes to the outer peripheral side of the drum member 131 and the caulking portion 133 of the drum 13, when the drum 13 vibrates in the outer tub 10, the screw 42. Is likely to contact the inner wall surface of the outer tub 10. Therefore, when viewed from the inner periphery of the outer tub 10, the peripheral wall surface is recessed outward to form a relief portion 103 that secures a space between the screw 42 head. More specifically, the inner diameter of the front edge portion 101a of the outer tank body member 101 which is a constituent member of the peripheral wall surface of the outer tank 10 is made slightly larger than the rear side thereof. The rear edge 102a of the outer tank front end surface member 102 is fitted on the inner periphery of the front edge 101a of the outer tank body 101, and the outer tank body member 101 and the outer tank front end surface member 102 are overlapped with each other. Are fixed with screws 104.

  In the conventional fixing method, the rear edge portion 102a of the outer tub front end surface member 102 is inserted to a position where it abuts on the inner circumferential side step 101b of the front edge portion 101a of the outer tub barrel member 101. On the other hand, in the configuration of this embodiment, as shown in FIG. 6, even when the front edge portion 101a of the outer tank body member 101 and the rear edge portion 102a of the outer tank front end surface member 102 overlap each other by a sufficient length. A gap is formed between the end portion of the rear edge portion 102a of the outer tub front end face member 102 and the inner peripheral side step 101b of the front edge portion 101a of the outer tub barrel member 101, which is just outside the head of the screw 42. I'm trying to come towards you. In other words, the gap formed in an annular shape along the inner periphery of the outer peripheral surface of the outer tub 10 is used as the escape portion 103. In general, it is often difficult to form an annular recess on the inner peripheral surface of a cylindrical member by resin molding, and even if possible, the cost is high. On the other hand, in the said structure, since it is only necessary to enlarge the diameter of the front edge part 101a of the outer tank trunk | drum member 101, there exists an advantage that the die cutting at the time of resin molding can also be performed without a problem.

  By providing the escape portion 103 on the outer tub 10 side in this way, it is possible to prevent the head of the screw 42 from contacting the inner wall surface of the outer tub barrel member 101 even when the drum 13 vibrates. In addition, since it is not necessary to increase the overall diameter of the outer tub body member 101, it is not necessary to increase the size of the casing 1. For example, in the same casing 1, the drum 13 is made as large as possible to perform washing / drying. The capacity can be increased.

  FIG. 7 is a detailed cross-sectional view of the mounting portion of the rotor 172 at the rear end of the main shaft 14 in the drum type washer / dryer of this embodiment. Since this structure is vertically symmetric about the central axis C, only the upper half is shown. As described above, the rotor 172 of the motor 17 is disposed so as to surround the stator-side field coil 171 whose position is fixed with respect to the bearing fixing member 15, but the rotor 172 extends from the periphery of the main shaft 14 to the outer peripheral side. A permanent magnet 174 is attached to the outer peripheral end of the extending disk-shaped member 173. Near the rear end of the main shaft 14 is a serration shaft 14a in which serrated grooves are formed in the axial direction. On the other hand, a cylindrical boss 175 formed on the inner peripheral side of the disk-shaped member 173 of the rotor 172. A serration 176 that meshes with the groove of the serration shaft 14a is formed on the inner periphery of the shaft, and the disk-like member 173 and the main shaft 14 are joined by the meshing of both. Further, the rear end portion of the main shaft 14 is a screw shaft 14b in which a thread groove is cut, and a disk inserted into the serration shaft 14a as described above by screwing and tightening a nut 177 to the screw shaft 14b. The cylindrical member 173 is prevented from being pulled out, so that the rotor 172 and the main shaft 14 are integrated.

  In the drum type washing / drying machine of the present embodiment, the coupling portion formed by the engagement between the serration shaft 14 a and the serration 176 is provided so as to protrude rearward from the disk-like member 173 of the rotor 172. In other words, the outer peripheral edge of the disk-shaped member 173 of the rotor 172 is positioned relatively forward. In this drum type washing and drying machine, since the drum 13 is inclined upwardly, the outer peripheral edge located on the upper side of the disk-like member 173 protrudes rearward. It is difficult to secure a gap with the inner surface of the rear wall 1d. On the other hand, as described above, the outer peripheral edge portion on the upper side of the disk-shaped member 173 is formed by positioning the coupling portion on the rear side of the disk-shaped member 173 so that the position of the disk-shaped member 173 is entirely forward. As shown in FIG. 7, it is possible to secure a gap L1 that does not contact the rear wall 1d even when the outer tub 10 vibrates with the inner surface of the rear wall 1d as shown in FIG. it can. On the other hand, the joint portion between the serration shaft 14a and the serration 176 is positioned relatively rearward. However, since the central axis C of the drum 13 is inclined as described above, the end portion of the main shaft 14 is inclined. A sufficient gap L2 between the screw shaft 14b and the inner surface of the rear wall 1d of the housing 1 can be ensured so as not to contact the rear wall 1d even when the outer tub 10 vibrates. In this manner, the size of the casing 1 in the front-rear direction can be suppressed while avoiding contact between the member mounted on the rear wall of the outer tub 10 and the rear wall 1d of the casing 1.

  In the drum type laundry dryer of this embodiment, in order to dry laundry that is not suitable for stirring such as cloth sneakers, a drying shelf is installed in the drum 13 and the laundry is placed on the drying shelf. By setting a course and performing a drying operation, drying can be performed without rotating the drum 13. In order to install the drying shelf 44 in the drum 13, as shown in FIG. 3, an appropriate position is placed on the center of the synthetic resin cap 43 attached to the center of the rear end surface of the drum 13, that is, on the central axis C of the drum 13. A holding hole 431 having a depth is formed. The cap 43 originally covers the head of a screw that is screwed from the inner side of the drum 13 in order to fix the main shaft 14 to the rear side of the rear end surface of the drum 13.

  The drying shelf 44 includes a holding shaft 441 extending substantially horizontally on the rear side. As shown in FIGS. 4 and 9, the holding shaft 441 is inserted into the holding hole 431 of the cap 43, and both sides of the front portion are placed in the outer tub 10. The drying shelf 44 is fixed by three-point support so as to be placed on the peripheral edge of the opening 10a. The insertion length of the holding shaft 441 with respect to the holding hole 431 is set to be longer than the play (backlash) in the front-rear direction of the drying shelf 44 with the door 2 closed, so that the drying shelf 44 is connected to the drum 13 during a drying operation or the like. Even in the case of rattling, the holding shaft 441 does not fall out of the holding hole 431, and the drying shelf 44 maintains a stable state.

  As described above, the position of the drying shelf 44 is originally fixed and the two points on the front side are held at the periphery of the opening 10a of the outer tub 10 that does not rotate, and the rear side is obtained by inserting the holding shaft 441 into the holding hole 431 described above. One point support. During the drying operation using the drying shelf 44, the drum 13 is not rotationally driven. However, when the user mistakenly sets the dehydrating operation with the drying shelf 44 mounted in the drum 13, The drum 13 may rotate at a high speed. In this case, the cap 43 also rotates with the rotation of the drum 13, but the holding hole 431 is positioned on the central axis C of the drum 13, so that even if the cap 43 rotates, the holding shaft 441 and the holding hole 431 are not rotated. The contact portion is only rubbed by friction, and the drying shelf 44 itself does not roll.

  It should be noted that the above embodiment is an example of the present invention, and it is obvious that even if changes, modifications, and additions are made as appropriate within the scope of the present invention, they are included in the claims of the present application.

BRIEF DESCRIPTION OF THE DRAWINGS The external appearance side view in the state which opened the door of the drum type washing-drying machine by one Example of this invention. The external appearance perspective view of the drum type washing-drying machine of a present Example. The schematic side longitudinal cross-sectional view in the position where a water supply / drainage path appears in the drum type washing-drying machine of a present Example. The schematic side surface longitudinal cross-sectional view in the position where a drying path | route appears in the drum type washing-drying machine of a present Example. The top view (a) which shows the schematic shape of a baffle in the drum type washing-drying machine of a present Example, and each sectional drawing (b) of A-A 'arrow line, B-B' arrow line, and C-C 'arrow line. FIG. 4 is a detailed view of a portion B in FIG. 3. The detailed sectional view of the attachment part of the rotor of the rear-end part of a main axis in the drum type washing machine of a present Example. The figure which shows the rotational drive pattern of the drum at the time of drying operation in the drum type washing-drying machine of a present Example. The front perspective view which shows the mounting state of the drying shelf in the drum type washing-drying machine of a present Example. The block block diagram of the electric system of the drum type washing-drying machine of a present Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Housing 2 ... Door 10 ... Outer tank 101 ... Outer tank trunk | drum member 101a ... Front edge part 101b ... Inner peripheral side level | step difference 102 ... Outer tank front end surface member 102a ... Rear edge part 103 ... Relief part 104 ... Screw 10a ... Opening Part 13 ... Drum 131 ... Body member 132 ... Front end face member 132a ... Curl part 133 ... Caulking part 13a ... Clothing inlet 13b ... Water passage hole 14 ... Main shaft 14a ... Serration shaft 14b ... Screw shaft 15 ... Bearing fixing member 16 ... Bearing 17 ... Drum motor 171 ... Stator side field coil 172 ... Rotor 173 ... Disk-like member 174 ... Permanent magnet 175 ... Boss 176 ... Serration 177 ... Nut 31 ... Air exhaust port 32 ... Ventilation path 33 ... Fan 34 ... Fan motor 35 ... drying heater 36 ... air supply port 40 ... baffle 401 ... top 402 ... base 41 ... fluid balancer 411 ... outer rib 412 ... inner rib 13 ... flow path 42 ... Screw 43 ... cap 431 ... holding hole 44 ... drying cabinet 441 ... holding shaft 50 ... controller 51 ... load driver

Claims (5)

An outer tub, a bearing provided in the outer tub, a shaft body rotatably supported by the bearing, and a drum having a circumferential cylindrical shape and having one end of the shaft body fixed to a rear end surface thereof. In the drum type washing machine, wherein the drum is disposed in a front rising slope so that the front end surface is higher than the rear end surface,
A baffle provided on the inner peripheral surface of the drum and having a top portion extending in a direction oblique to the axial direction of the rotation;
A motor that drives the shaft to rotate the drum;
Control means for controlling the motor so that the rotation direction is the same as the inclination direction of the top of the baffle when the drum is rotated at a high speed in order to dehydrate laundry stored in the drum;
A drum-type washing machine comprising: Comprising hot air supply means for supplying hot air to the inside from the front end face side in order to dry the laundry stored in the drum,
The controller rotates the time in which the drum rotates in the same direction as the tilt direction of the top of the baffle while reversing the rotation direction of the drum when performing the drying operation by operating the hot air supply unit. 2. The drum type washing machine according to claim 1, wherein the motor is controlled by setting it longer than time. In a drum-type washing machine comprising: an outer tub, a circumferentially cylindrical drum rotatably disposed in the outer tub, and an annular fluid balancer attached to the outer peripheral edge of the end surface of the drum.
The fluid balancer is fixed from the outside of the cylindrical body of the drum by a screw that penetrates the plate of the body, and the inner wall surface of the body of the outer tub faces the head of the screw as the drum rotates. A drum type washing machine, characterized in that an annular portion has a shape recessed outward. An outer tub, a drum having a cylindrical surface that is rotatably disposed around an axis extending in the front-rear direction in the outer tub, and an outer peripheral edge of a front end surface on which a clothing input port of the drum is formed. A drum-type washing machine comprising an annular fluid balancer,
The fluid balancer has an annular ridge on an inner peripheral wall surface, and the front end surface of the drum is formed of an annular plate member having a concave cross section surrounding a clothing insertion port, and the ridge of the fluid balancer is the annular plate A drum-type washing machine, wherein the drum-type washing machine is fitted into a concave-shaped section of the annular plate member in a state of being in contact with an end portion on the inner peripheral side of the member. An outer tub, a bearing provided in the outer tub, a shaft body rotatably supported by the bearing, and a drum having a circumferential cylindrical shape and having one end of the shaft body fixed to a rear end surface thereof. A drum-type washing machine equipped with a drying shelf for stationary drying in the drum so that the drying operation can be performed;
A cap mounted at the inner center of the drum rear end surface so as to cover the heads of a plurality of screws screwed from the inside of the drum to fix the shaft body to the rear end surface of the drum; A holding hole is formed in the center of the cap, a holding shaft inserted into the holding hole is provided in the drying shelf, and the holding shelf is inserted into the holding hole to hold the drying shelf in the drum. A drum-type washing machine characterized by that.

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