JP2013118877A - Washing and drying machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent detergent foams from entering a circulation air path by reducing pressure loss caused in the circulation air path.SOLUTION: A washing and drying machine comprises: a drum 4 rotatably provided in a water tank 3; a motor 9 for rotatively driving the drum; a circulation air path 11 for introducing drying air through a rear portion of the water tank; air sending means 13 for sending air to the circulation air path; dehumidifying means 16 for dehumidifying the drying air coming out of the water tank; heating means 17 for heating the drying air having been dehumidified by the dehumidifying means; an air path shutter 18 for opening/closing the circulation air path; and driving means 19 for driving the air path shutter 18, and an inlet 10 is provided in the rear portion of the water tank 3 to be communicated and connected with the circulation air path 11, and the air path shutter 18 for opening/closing the circulation air path 11 is provided in the inlet 10.

Description

  The present invention relates to a washing / drying machine capable of washing and drying clothes and the like.

  Conventionally, this type of washing / drying machine can perform drying following the steps of washing, rinsing, and dewatering. Since each process of washing to drying is performed in a common drum provided in the water tank, the detergent foam generated during the washing process is provided for blowing air for drying into the drum during the drying process. It is required to be configured not to flow into the air path.

  Since it is left up to the user to determine the type and amount of detergent to be put in the laundry, it is assumed that a large amount of detergent bubbles will be generated in the water tank, and the components provided to execute the drying process That is, it is considered to prevent the air from flowing into a circulation air passage in which an air blowing unit, a dehumidifying unit, a heating unit, and the like are provided (for example, see Patent Document 1).

  FIG. 6 shows a conventional drum-type washing and drying machine described in Patent Document 1. As shown in FIG. In FIG. 6, a circulation air passage 53 is connected to an intake port 52 that opens on the rear surface of a water tank 51 containing a rotating drum, and an air passage shutter 54 that opens and closes the circulation air passage 53 near the intake port 52 of the circulation air passage 53. Provided. The drying air flowing through the circulation air passage 53 is dehumidified and heated by the heat pump device 55 connected to the circulation air passage 53 and circulates in the water tank 51 to dry the laundry.

  The air passage shutter 54 is urged to open the circulation air passage 53 by an urging means 56 made of a coil spring, and resists the urging force of the urging means 56 by a driving means 57 made of a geared motor during the washing process. By driving the air passage shutter 54 and closing the circulation air passage 53, even if a large amount of detergent bubbles are generated in the water tank 51 and overflow from the intake port 52, the air passage shutter 53 is prevented from entering the circulation air passage 53. To prevent.

  Also, during the drying process, the driving means 57 is turned off, and the air passage shutter 54 is urged by the urging means 56 so as to open the circulation air passage 53 so that the drying air flows.

JP 2007-135957 A

  However, in the conventional configuration, since the air passage shutter 54 for opening and closing the circulation air passage 53 is provided in the middle of the circulation air passage 53, the air passage cross-sectional area is increased at the portion where the air passage shutter 54 is provided. Get smaller. Therefore, the pressure loss of the drying air flowing through the circulation air passage 53 is increased, and there is a problem that the drying efficiency is poor and the power consumption during the drying operation is increased.

  An object of the present invention is to solve the conventional problems and to provide a washing and drying machine capable of reducing the pressure loss of the circulation air passage and preventing the detergent bubbles from entering the circulation air passage. .

  In order to solve the above-described conventional problems, a washing and drying machine according to the present invention introduces a drum rotatably provided in a water tank, a motor that rotationally drives the drum, and drying air from a back surface of the water tank. A circulating air passage; a blowing means for blowing air to the circulating air path; a dehumidifying means for dehumidifying drying air that has come out of the water tank; a heating means for heating the drying air dehumidified by the dehumidifying means; and the circulating air An air passage shutter that opens and closes a passage; and a drive unit that drives the air passage shutter. The circulation passage is connected to the introduction opening by providing an introduction port on a rear surface of the water tank, and the circulation air passage is connected to the introduction port. Is provided with an airway shutter.

  Thereby, the air passage shutter can be disposed outside the circulation air passage, the cross-sectional area of the circulation air passage is not partially narrowed by the air passage shutter, the pressure loss of the circulation air passage is reduced, It is possible to prevent the detergent bubbles from entering the circulation air passage.

  The washing / drying machine of the present invention can reduce the pressure loss of the circulation air passage and increase the drying efficiency, and can prevent the detergent bubbles from entering the circulation air passage.

Sectional drawing of the principal part of the washing-drying machine in Embodiment 1 of this invention AA sectional view of the washing and drying machine in FIG. Perspective view of essential parts of the washing / drying machine Perspective view of air passage shutter part of the washing and drying machine (A)-(c) Operation | movement figure of the air-path shutter of the said washing-drying machine A main part rear perspective view of a conventional drum-type washing and drying machine

  The first invention is a water tank elastically supported in a housing, a drum rotatably provided in the water tank, a motor for rotationally driving the drum, and circulating air for introducing drying air from the back surface of the water tank. A passage, a blowing means for blowing air to the circulation air passage, a dehumidifying means for dehumidifying the drying air coming out of the water tank, a heating means for heating the drying air dehumidified by the dehumidification means, and the circulation air passage An air passage shutter that opens and closes, and a driving means that drives the air passage shutter, and is provided with an introduction port on a back surface portion of the water tank so as to communicate and connect the circulation air passage, and the circulation air passage is opened and closed at the introduction port. By providing the air passage shutter, the air passage shutter can be disposed outside the circulation air passage, and the cross-sectional area of the circulation air passage is not partially narrowed by the air passage shutter. Increases drying efficiency by reducing pressure loss Bets can be, it is possible to reduce the power consumption during the drying operation, it is possible to prevent intrusion of the detergent foam into the circulation air passage.

  According to a second aspect of the invention, in particular, in the first aspect of the invention, a rotation shaft that rotatably supports the air passage shutter is provided at one end of the air passage shutter, and the air passage shutter is driven by a driving unit. Rotating to the water tank side around the center of the water tank so that the water level in the water tank rises abnormally during washing, so that air pressure is applied in the direction that the airway shutter closes the air inlet. It is possible to prevent water from flowing into the air passage.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, in the first or second aspect, an accommodating portion is provided in the back of the water tank in the vicinity of the introduction port, and the airway shutter is accommodated in the accommodation portion when the introduction port is opened. With this configuration, the air passage shutter can be greatly displaced toward the water tank side by rotation to open the inlet, and the introduction of drying air from the circulation air passage can be facilitated.

  In a fourth aspect of the invention, in particular, in any one of the first to third aspects of the invention, the air passage shutter has a biasing unit that biases the inlet in a direction to close the introduction port, and the drive unit is the biasing unit. Since the inlet is opened against the urging force of the air, the inlet can be kept open during the drying operation, and the airway shutter is blown by the drying air to the inlet. The generation of abnormal noise can be prevented without contact, and the drying air can be stably introduced from the introduction port.

  In a fifth aspect of the invention, in particular, in any one of the first to fourth aspects of the invention, the airway shutter is provided with a turning shaft that rotatably supports the airway shutter at one end, A first gear provided on the second gear, a second gear meshing with the first gear, a third gear provided on a rotation shaft of the second gear, and meshing with the third gear; and A fourth gear connected to the driving means, and a one-way clutch provided on a rotation shaft of the second gear, and a cutout portion is provided in a part of the second gear, When the first gear rotates to an angle that does not mesh with the second gear, the air passage shutter can be rotated by the urging force of the urging means to close the introduction port. In addition to preventing overheating of the motor, which is the driving means, abnormal detergent bubbles during washing Or foam detergent bubbles and water by the water supply and drainage abnormality, it is possible to prevent the entering the air circulation duct, further, it is possible to reduce the conduction time of the motor, reducing the power consumption.

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

(Embodiment 1)
FIG. 1 is a cross-sectional view of the main part of the washing / drying machine according to the first embodiment of the present invention, FIG. 2 is a cross-sectional view of the washing / drying machine taken along line AA in FIG. 1, and FIG. FIG. 4 is a perspective view of the air path shutter unit, and FIG. 5 is an operation diagram of the air path shutter.

  1-5, the water tank 3 elastically supported by the damper 2 etc. is provided in the housing | casing 1 which forms the outline of a washing-drying machine. A cylindrical drum 4 with a bottom is rotatably provided in the water tank 3, and a rotating shaft 5 is provided substantially horizontally in the front-rear direction. A plurality of baffles 6 projecting inward in the direction of the rotation shaft 5 and a plurality of through holes 7 communicating with the inside of the water tank 3 are provided on the inner peripheral side surface of the drum 4. An opening 8 is provided.

  The back surface portion of the water tank 3 is inclined so as to bulge from the periphery toward the center of rotation toward the front surface side, and a concave portion 3 a that is recessed in a substantially conical shape is formed on the outer back surface of the water tank 3. Similarly to the back surface portion of the water tank 3, the back surface portion of the drum 4 is inclined so as to bulge from the periphery toward the front surface side toward the rotation center. A bearing portion 5 a that rotatably supports the rotating shaft 5 of the drum 4 is provided on the back surface of the water tank 3.

  A motor 9 that rotationally drives the drum 4 is attached to the back surface of the water tank 3. The motor 9 is composed of a brushless DC motor, and the rotation speed can be freely changed by inverter control. At least a part of the motor 9 is provided in the recess 3a. Washing water is supplied into the water tank 3 by a water supply valve (not shown) serving as a water supply means for supplying the washing water into the water tank 3, and the washing water supplied into the water tank 3 flows into the drum 4 from the through holes 7. To do.

  An inlet 10 for introducing drying air is provided on the back surface of the water tank 3, and one end of the circulation air passage 11 is connected to the inlet 10 to introduce drying air into the drum 4. The drying air introduced into the water tank 3 and the drum 4 flows out from the exhaust port 12 provided in the upper front part of the water tank 3 and flows into the circulation air path 11.

  A blowing fan 13 as a blowing means for blowing drying air into the drum 4 through the circulation air passage 11 is driven by a fan motor 14, and the drying air blown to the circulation air passage 11 by the blowing fan 13 is It circulates in the water tank 3 and the drum 4 through the circulation air passage 11.

  In the circulation air passage 11, the lint contained in the drying air flowing into the circulation air passage 11 from the exhaust port 12 is removed, and a lint filter 15 provided detachably with respect to the circulation air passage 11, and the lint filter 15 The dehumidifying means 16 that cools and dehumidifies the drying air that has passed through, and the heating means 17 that heats the drying air cooled and dehumidified by the dehumidifying means 16 are provided.

  The dehumidifying means 16 and the heating means 17 can be configured by a heat pump device or the like. In this case, the dehumidifying means 16 is constituted by an evaporator, and the heating means 17 is constituted by a condenser.

  In addition, the dehumidifying means 16 and the heating means 17 can also be comprised other than a heat pump apparatus. In this case, the dehumidifying means 16 is constituted by a water-cooled or air-cooled heat exchanger, and the heating means 17 is constituted by a heater or the like.

  The drying air blown by the blower fan 13 is cooled and dehumidified by the dehumidifying means 16, heated by the heating means 17, then supplied from the inlet 10 into the drum 4, and comes into contact with the laundry in the drum 4. Moist air that has taken away moisture enters the water tank 3 from the through hole 7, returns to the circulation air passage 11 from the exhaust port 12, flows from the front to the rear in the upper part of the water tank 3, and moves in the direction of arrow A in FIG. Circulate.

  The inlet 10 provided on the back surface of the water tank 3 is formed in a substantially rectangular shape and has a long side portion 10a and a short side portion 10b. An air passage shutter 18 that opens and closes the circulation air passage 11 is provided at the introduction port 10. The air passage shutter 18 is rotatably supported by a rotation shaft 18a provided at one end thereof, and is rotated around the rotation shaft 18a toward the water tank 3 by a driving means 19 such as a motor, and circulates through the introduction port 10. It is configured to open to the outside of the air passage 11 in the direction of arrow B.

  On the back surface of the water tank 3, a housing part 20 is provided in the vicinity of the introduction port 10, and the airway shutter 18 is rotated toward the water tank 3 around a rotation shaft 18 a provided along the long side part 10 a. The air passage shutter 18 is configured to be accommodated in the accommodating portion 20 when the inlet 10 is opened by moving.

  The accommodating portion 20 can secure a sufficient space in the front-rear direction by the concave portion 3 a formed on the back surface of the water tank 3, and the position where the tip portion of the airway shutter 18 is farthest from the inlet 10 (for example, 90 ° rotation). Movement) and can be opened.

  The airway shutter 18 is urged in a direction to close the introduction port 10 by an urging means 21 such as a spring, and the driving means 19 opens the introduction port 10 against the urging force of the urging means 21. It is configured as follows.

  The introduction port 10 is provided so that the short side portion 10b is in the radial direction of the drum 4, and the air passage shutter 18 can be opened and closed in a compact manner by a rotating shaft 18a provided on the long side portion 10a. A rib 10 c that protrudes toward the outflow side of the drying air is provided in the accommodating portion 20 at the peripheral edge of the introduction port 10, and comes into contact with the closed surface of the air passage shutter 18. The closing surface of the air passage shutter 18 that contacts the rib 10c of the introduction port 10 is provided with an elastic body 18b such as rubber, so that the introduction port 10 can be reliably closed by the urging force of the urging means 21.

  The air path shutter 18 includes a first gear 22 provided on a rotation shaft 18 a that rotatably supports the air path shutter 18, a second gear 23 that meshes with the first gear 22, and a second gear. The third gear 24 provided on the rotation shaft 23a of the second gear 23, the fourth gear 25 meshing with the third gear 24 and connected to the driving means 19, and the rotation shaft 23a of the second gear 23. The one-way clutch 26 that restricts rotation in one direction is provided. And the tooth | gear of the 2nd gearwheel 23 is provided only in the fixed angle, and the notch part 23b which notched a part of tooth | gear of the 2nd gearwheel 23 is provided.

  The control means 27 is disposed at the lower front part in the housing 1 and controls the motor 9 and the like to control each step of washing, rinsing, dehydration and drying.

  The operation and action of the washing / drying machine configured as described above will be described below. After opening the door 28 that can be freely opened and closed on the front side of the housing 1 and putting the laundry into the drum 4 from the opening 8, a power switch (not shown) of the operation unit provided on the front upper surface of the housing 1 is shown. When the operation is started by operating a start switch (not shown), the amount of laundry put in is detected.

  Laundry is performed in the order of a washing step, a rinsing step, and a dehydration step. The washing process is started following the determination of the amount of laundry put in, a water amount set in advance by the detected weight of the laundry is introduced into the aquarium 3, and a predetermined amount of detergent is put in. Washing water supplied into the water tank 3 flows into the drum 4 from the through holes 7.

  When washing is started and the washing process is started, the motor 9 is driven, the laundry is lifted along the rotation direction of the drum 4 by the baffle 6 provided in the drum 4, and falls from the upper part in the drum 4 by gravity. Then, forward rotation and reversal operations are alternately repeated at a rotational speed at which mechanical force at the time of dropping is applied to the laundry, for example, 30 to 50 rpm. As a result, the laundry is washed in the drum 4.

  In the washing process, the washing water in which the detergent is dissolved is in a state of being stored in the bottom of the water tub 3, so that the lower part of the drum 4 is in a state of being immersed in the washing water. Therefore, when the drum 4 is rotated, the washing water is stirred to generate foam.

  At the time of washing, the fourth gear 25 is rotated by the driving means 19, and the notch 23 b in which a part of the teeth of the second gear 23 is cut is opposed to the first gear 22 to disengage the mesh. As a result, the linkage between the second gear 23 and the first gear 22 is released, and the air passage shutter 18 is urged in a direction to close the inlet 10 by the urging means 21 and is connected to the circulation air passage 11. Since the introduced inlet 10 is closed as shown in FIG. 5A, it is possible to prevent the detergent bubbles and washing water generated in the water tank 3 from entering the circulating air passage 11.

  That is, the one-way clutch 26 prevents the airway shutter 18 from rotating in the direction to close the inlet 10, and therefore, by providing the teeth of the second gear 23 only at a certain angle, the angle does not mesh with the second gear 23. When the first gear 22 rotates, the air passage shutter 18 can be rotated by the urging force of the urging means 21 to close the introduction port 10.

  Therefore, it is possible to prevent overheating of the motor which is the driving means 19 and to prevent the detergent foam and water from being abnormally foamed during washing and the detergent foam and water due to abnormal supply and drainage from flowing into the circulation air passage 11 from the introduction port 10. In addition, since the energization time of the motor that is the driving means 19 can be reduced, the power consumption can also be reduced.

  Subsequent to the washing process, the rinsing process and the dehydrating process are performed, and then the drying process is performed. In the drying step, the air passage shutter 18 is rotated toward the water tank 3 around the rotation shaft 18 a by the driving unit 19, and the introduction port 10 is opened against the urging force of the urging unit 21. When the air passage shutter 18 is rotated to open the introduction port 10, the air passage shutter 18 is located in the housing portion 20, and the introduction port 10 can be largely opened as shown in FIG. The air path shutter 18 can be opened and closed outside the circulation air path 11.

  In particular, if the opening position of the air passage shutter 18 is outside the rib 10 c provided at the peripheral edge of the inlet 10, that is, out of the flow of the drying air blown from the inlet 10, the inside of the drum 4 of the drying air There is little resistance to the introduction to and can be made smooth.

  When the air path shutter 18 is kept open during the drying process, the motor is overheated when the motor as the driving means 19 is kept energized, so the first gear 22 rotates in the direction to close the inlet 10. The one-way clutch 26 is attached so that the air passage shutter 18 is kept open and the motor serving as the drive means 19 can be de-energized.

  Further, during the drying process, since the air passage shutter 18 is held in the state where the introduction port 10 is opened, the air passage shutter 18 is blown by the air pressure of the drying air blown from the blower fan 13 and is different. Generation of sound can be prevented, and drying air can be stably introduced from the inlet 10.

  Further, the control means 27 is configured to be able to adjust the wind direction of the drying air introduced from the introduction port 10 by changing the opening angle of the introduction port 10 by the air passage shutter 18. The opening angle is set between the state of FIG. 5A in which the introduction port 10 is closed and the state of FIG. 5C in which the opening is opened, and is set to the state of FIG. 5B, for example. Thus, the air path shutter 18 can be tilted upward, and the wind direction can be made different from the state shown in FIG.

  If the rotation shaft 18a of the air passage shutter 18 is provided at a position away from the rotation shaft 5 of the drum 4, that is, on the side opposite to the introduction port 10 (the upper end of the introduction port 10 in FIG. 5), the air passage shutter 18 is provided. The inlet 10 can be opened in a state where is inclined downward, and the drying air can be introduced toward the rotation center of the drum 4.

  Further, the wind direction of the drying air can be set in the rotation direction of the drum 4 by the inclination direction of the air path shutter 18. In this case, the drying air can be smoothly introduced along the stirring flow of the clothes and the like stirred in the rotation direction in the drum 4, and the drying air is brought into good contact with the clothes and the drying efficiency is improved. Can be increased.

  Further, the wind direction of the drying air can be set in the direction opposite to the rotation direction of the drum 4. In this case, the introduced drying air can generate a stirring flow with respect to the clothes that are stirred in the rotation direction in the drum 4, and the drying air can be brought into good contact with the clothes and the like. Efficiency can be increased.

  Further, the control means 27 can adjust the wind speed of the drying air introduced from the inlet 10 by changing the degree of opening of the inlet 10 by the air passage shutter 18 and / or the amount of air blown by the fan 13. It is composed. Thereby, clothes etc. in drum 4 can be dried optimally.

  As described above, in the present embodiment, the water tank 3 elastically supported in the housing 1, the drum 4 rotatably provided in the water tank 3, the motor 9 that rotationally drives the drum 4, and the water tank 3 A circulation air passage 11 for introducing drying air from the back surface, a blower means 13 for blowing air to the circulation air passage 11, a dehumidifying means 16 for dehumidifying the drying air discharged from the water tank 3, and a dehumidifying means dehumidified by the dehumidifying means 16 The heating means 17 for heating the working air, the air passage shutter 18 for opening and closing the circulation air passage 11, and the drive means 19 for driving the air passage shutter 18 are provided. The air passage 11 is connected in communication, and an air passage shutter 18 that opens and closes the circulation air passage 11 is provided at the introduction port 10. The air passage shutter 18 can be disposed outside the circulation air passage 11. The cross-sectional area of the circulating air passage 11 is reduced by the road shutter Therefore, the pressure loss of the circulation air passage 11 can be reduced to increase the drying efficiency, the power consumption during the drying operation can be reduced, and the detergent bubbles into the circulation air passage 11 can be reduced. Can be prevented from entering.

  Further, a rotation shaft 18a for rotatably supporting the air passage shutter 18 is provided at one end of the air passage shutter 18, and the air passage shutter 18 is rotated by the driving means 19 around the rotation shaft 18a toward the water tank 3. Thus, even if the water level in the aquarium 3 rises abnormally during washing, water pressure is applied in the direction in which the airway shutter 18 closes the inlet 10, so that the inlet 10 Inflow of water into the circulation air passage 11 can be prevented.

  The airway shutter 18 has a biasing means 21 that biases the inlet 10 in the closing direction, and the driving means 19 opens the inlet 10 against the biasing force of the biasing means 21. During the drying operation, the inlet 10 can be held open, and the air passage shutter 18 is not blown by the drying air and does not come into contact with the inlet 10. Can be prevented, and drying air can be stably introduced from the inlet 10.

  In addition, an accommodating portion 20 is provided in the back surface of the water tank 3 in the vicinity of the inlet 10 so that the air passage shutter 18 can be accommodated in the accommodating portion 20 when the inlet 10 is opened. The introduction port 10 can be opened by largely displacing 18 to the water tank 3 side by rotation, and the introduction of drying air from the circulation air passage 11 can be facilitated.

  Further, the air path shutter 18 is provided with a rotation shaft 18 a that rotatably supports the air path shutter 18 at one end, and meshes with the first gear 22 provided on the rotation shaft 18 a and the first gear 22. A second gear 23, a third gear 24 provided on the rotation shaft 23 a of the second gear 23, a fourth gear 25 that meshes with the third gear 24 and is connected to the driving means 19. The one-way clutch 26 provided on the rotation shaft 23a of the second gear 23 is provided, and a notch 23b is provided in a part of the second gear 23 so that the linkage with the first gear 22 can be released. When the first gear 22 rotates to an angle that does not mesh with the second gear 23, the air passage shutter 18 can be rotated by the urging force of the urging means 21 to close the inlet 10 and drive. Prevents overheating of the motor, which is means 19, and prevents the detergent bubbles from being washed differently. Foaming and detergent bubbles and water by the water supply and drainage abnormality, it is possible to prevent the entering the air circulation duct 11, further, since the energizing time of the motor can be reduced, it is also possible to reduce power consumption.

  As described above, the washing and drying machine according to the present invention can increase the drying efficiency by reducing the pressure loss of the circulation air passage, and can prevent the detergent bubbles from entering the circulation air passage. Useful as a washing dryer.

DESCRIPTION OF SYMBOLS 1 Housing | casing 3 Water tank 4 Drum 9 Motor 10 Inlet 11 Circulation air path 13 Fan for ventilation (air blowing means)
16 Dehumidifying means 17 Heating means 18 Airway shutter 19 Driving means

Claims (5)

A water tank elastically supported in a housing, a drum rotatably provided in the water tank, a motor for rotating the drum, a circulation air path for introducing drying air from the back surface of the water tank, and the circulation air A blowing means for blowing air to the road; a dehumidifying means for dehumidifying the drying air that has come out of the water tank; a heating means for heating the drying air dehumidified by the dehumidifying means; and an air passage shutter for opening and closing the circulation air passage; Drive means for driving the air passage shutter, provided with an introduction port on the back surface of the water tank so as to connect the circulation air passage, and provided with an air passage shutter for opening and closing the circulation air passage. Washing and drying machine. A rotation shaft that rotatably supports the air passage shutter is provided at one end of the air passage shutter, and the air passage shutter is rotated to the water tank side around the rotation shaft by a driving means to open the introduction port. The washing / drying machine according to claim 1, wherein The washing / drying machine according to claim 1 or 2, wherein a housing portion is provided in the back surface of the water tank in the vicinity of the introduction port, and the airway shutter can be housed in the housing portion when the introduction port is opened. The air passage shutter has urging means for urging the inlet in a closing direction, and the driving means opens the inlet against the urging force of the urging means. The washing dryer according to any one of the above. The air path shutter is provided with a rotation shaft that rotatably supports the air path shutter at one end, a first gear provided on the rotation shaft, and a second gear meshing with the first gear. A third gear provided on the rotation shaft of the second gear, a fourth gear meshing with the third gear and connected to the driving means, and on the rotation shaft of the second gear. 5. The structure according to claim 1, further comprising: a one-way clutch provided on the second gear, wherein a cutout portion is provided in a part of the second gear so that the linkage with the first gear can be released. Washing and drying machine.

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