JP2892761B2 - Washing machine and washing dryer - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a drum type washing machine having a washing and dewatering tub and a drum type washing and drying machine in which the washing and dewatering tub also serves as a drying container.

[Conventional technology]

As described in Japanese Patent Application Laid-Open No. 63-214288, a clutch device of a fully automatic washing machine engages a rising portion of an operation band wound around a spring collar with a plunger of a solenoid during washing so that the spring collar is engaged. The clutch spring is stopped, and the rotation of the motor is transmitted to the stirring blade via the reduction gear. At the time of spin-drying, the solenoid is energized, the plunger is sucked, the spring collar is set in a free state, the clutch spring is tightened, and the motor rotates the spin-drying layer at high speed.

Further, a fully automatic washing / drying machine that automatically and consistently performs washing to drying functions as a washing tub and a dewatering tub and also functions as a drying container as described in, for example, JP-A-56-5964. The drum to be rotated is supported by bearings in a horizontal shape, and the drum is rotated at a low speed during the washing process, and is rotated at a high speed during the dewatering process. At the time of drying, while rotating the drum at low speed, hot air heated by a heat source such as a heater is sent into the drum, and the moist air containing moisture evaporated from the laundry is discharged outside the machine to dry the laundry. I have.

[Problems to be solved by the invention]

In the above-described conventional technology, in a structure having a clutch device and a speed reducer that transmits the rotation of the output shaft of the motor in accordance with two rotation states of a low-speed rotation and a high-speed rotation of the drum, the speed of the drum is reduced when the power is stopped during dehydration. No consideration is given to the reduction gear being engaged during rotation, generating an impulsive sound, or excessive impact force being applied to the reduction gear.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a structure having a clutch device and a speed reducer for transmitting the rotation of an output shaft of a motor to a drum according to two rotation states of low speed rotation and high speed rotation. It is an object of the present invention to provide a washing machine and a washing / drying machine in which the problem is prevented.

[Means for solving the problem]

In order to achieve the above object, the washing machine of the present invention is a washing machine that performs a washing and a dehydration by horizontally supporting a drum serving as a washing tub and a dehydration tub in a vibration-isolated outer tub. A motor that generates a rotational driving force of the drum, a clutch device that transmits the rotational driving force of the motor to the drum in accordance with two rotation states of the drum, and a reduction device that has a speed reducer; A spring collar provided with a ratchet blade on the outer periphery, a ratchet claw having a ratchet-shaped portion engaged with the ratchet blade and rotatably provided on the outer periphery of the spring collar; and a drive for driving the ratchet claw. A drive for generating a driving force for the ratchet pawl, and a switch for cutting off the power supply to the motor. Ratchet blade and engaged, at the time of dehydration to release the engagement of the ratchet blade and the ratchet pawl, turning off the power to the motor for driving the ratchet pawl to stop the rotation of the drum due to dehydration.

Further, in order to achieve the above object, the washing and drying machine of the present invention includes a drum that also functions as a drying container that also serves as a washing tub and a dehydration tub, and a unit that supplies hot air into the drum,
In a washing / drying machine that carries out washing, spin-drying and drying by horizontally supporting the drum in a vibration-proof supported outer tub, a motor that generates a rotational driving force of the drum, and a rotational driving force of the motor A clutch device for transmitting to the drum in accordance with two rotation states of the drum, and a reduction device having a speed reducer, wherein the clutch device engages with a spring collar provided with a ratchet blade on an outer periphery and the ratchet blade. A ratchet pawl having a ratchet-shaped portion and rotatably provided at an outer peripheral portion of the spring collar; and a driving device for driving the ratchet pawl, wherein the driving device generates a driving force for the ratchet pawl. A motor and a switch for cutting off the power supply to the motor, wherein the ratchet pawl is engaged with the ratchet blade during washing, and the ratchet pawl is engaged with the ratchet during dehydration. Serial to release the engagement of the ratchet blade, to cut off the power supply to the motor for driving the ratchet pawl to stop the rotation of the drum due to dehydration.

[Action]

According to the above-described means, the power supply to the motor that drives the ratchet pawl is interrupted until the rotation of the drum due to dehydration is stopped. Can be.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the drawings. Figure 1
FIG. 2 is a longitudinal sectional view showing the entire configuration of the fully automatic washing / drying machine according to the present invention, and FIG. 2 is a sectional view taken along line XX of FIG.

In FIGS. 1 and 2, reference numeral 21 denotes an outer frame which is an exterior part supported by rubber legs 21a, and reference numeral 22 denotes a control panel part for housing the control device and a cover part which are integrally fixed to the outer frame 21. The provided top cover 23 is a lid that is butterflyed on the cover portion. Reference numeral 24 denotes an outer tub composed of a cylindrical body 24a and side plates 24b and 24c.
Opening 24d for putting laundry A in and out of the upper end
And a drain port 24e drilled at the lower end, and a water injection port attached to the upper part of the cylindrical body 24a, and further located at the center of the side plate 24b to blow the drum 27 at the time of drying. Opening
24g, and a drum 2 at the center of the side plates 24b and 24c.
7 is supported by bearings, and stores washing water. 25 is the opening 25a
A tank cover 26 fixed to the outer tank 24 by engaging its opening 25a with the opening 24d of the outer tank 24; The drum 27 functions as both a washing tub and a dehydration tub, and also functions as a drying container. Also the drum
27 includes a cylindrical portion 28, a side plate 29, and a side plate 30. 28a is a plurality of drums arranged at equal intervals toward the center on the inner periphery of the drum 27 for washing the laundry A by applying an impact to the laundry during washing and drying while stirring the laundry A during drying. The lifter 28b is a small hole having a diameter of 4 to 6 mm that functions as a dewatering hole during the dehydrating operation and also functions as a humid air discharging hole during the drying operation. This small hole 28b
Are sparsely formed on the hot air blowing side and densely formed on the opposite side thereof over the entire circumference of the drum 27. Reference numeral 28c denotes an input opening formed by cutting out and opening one of the drums 27 for taking in and out the laundry A, and a drum cover 3 is provided at a peripheral end of the input opening 28c.
One is butterflyed. 29a is a recess formed in the center of the side surface of the drum 27, which is on the hot air
Are a number of small holes for blowing out hot air, which are formed in the outer periphery of the circular flat surface of the concave portion 29a. The side plate 30 has the same shape as the side plate 29 and has a recess 30a and a small hole 30b for discharging humid air, and is arranged to face the side plate 29.

32 is a hub portion 32a fixed to the side plate 29 of the drum 27 and a shaft portion 3
Reference numeral 33 denotes a rotary shaft in which the hub portion 33a fixed to the side plate 30 and a shaft portion 33b in which the pulley 34 is fixed are integrated. The pulley 34 is for driving a drum fixed to the shaft 33b.

Reference numeral 35 denotes a four-pole condenser induction motor (hereinafter referred to as a motor) for driving the drum 27, which is fixed to a lower portion of the outer tub 24, and rotates the drum 27 forward and reverse through a speed reducer 36 during washing and drying. . At the time of dehydration, first rotate at low speed, then
Rotate at high speed without deceleration. The speed reducer 36 is fixed below the outer tub 24 similarly to the motor 35.

39 is a pulley fixed to the shaft 35a of the motor 35, 40 is
A pulley fixed to the input shaft of the reduction gear 36 , 41 is a pulley
This is a belt hung between the pulley 39 and the pulley 40. 42 is a pulley fixed to the output shaft of the reduction gear 36 , and 43 is a belt hung between the pulley 42 and the drum driving pulley 34.

Reference numeral 44 denotes a once-through circulating fan that divides a casing 44b into two parts at the center of the impeller 44a and forms a suction port 44c and a discharge port 44d on one surface, and a side plate 24b of the outer tank 34.
When drying, it supplies hot air to the drum 27 and circulates the discharged wet air. 45, casing 44
A fan shaft 46 supported by the front and rear side plates is a pulley fixed to the fan shaft 45. 47 is the side plate 24 of the outer tank 24
b, fixed inside the center of the
The heating chamber 9a is airtightly fitted to the heating chamber 9a, and has an opening 47a for blowing hot air into the drum 27 in a lower half thereof. Four
Numeral 8 is a ring-shaped airtight holding member which is disposed between the concave portion 29a of the side plate 29 of the drum 27 and the heating chamber 47. Numeral 49 denotes a sheath heater for heating the humid air circulating during drying and supplying it to the drum 27, and is housed in the heating chamber 47.

Reference numeral 50 denotes a drainage chamber connected to the drainage port 24e of the outer tub 24, which has a drainage hole communicating with the drainage valve 55, a hole for connecting the trap 33, and a connection portion for the duct 51. Reference numeral 51 denotes a duct which is set up from the drainage chamber 50 and connected to the suction port 44c of the circulation fan 44. The duct 51 is connected to a water supply valve (C) 61 in the middle of the duct and is provided with a water outlet 52 for spraying cooling water downward. I have. 55 is a drain valve communicating with the drain hole of the drain chamber 50, and 56 is a drain hose connected to the discharge pipe of the drain valve 55. 57 is a fan motor for driving the circulation fan 44 fixed to the lower part of the outer tank 24,
58 is a pulley fixed to the shaft of the fan motor 57, and 59 is a belt hung between the pulley 58 and the pulley 46. 6
Numerals 0 and 61 are respectively integrated with water supply valves (S) and (C) and have a common tap water inlet and an independent discharge pipe.

The water supply valve (S) 60 is opened during washing and rinsing to open the outer tub 24.
The water supply valve (C) 61 is opened at the time of drying to spray cooling water into the duct 51. Reference numeral 62 denotes a flow restrictor connected to the discharge port of the water supply valve (C) 61. The flow passage area automatically changes according to the magnitude of tap water pressure, and a constant flow of cooling water is supplied into the duct 51. . Numeral 63 denotes a water supply body in which plate members rich in water absorption accommodated in the duct 51 are arranged in a vertical direction with a gap provided. 64 is a water supply hose, 65 is a water supply hose connected to the discharge port of the water supply valve (S) 60 and the water supply port 24f of the outer tank 24, 66
Is a small-diameter tube.

67 is a buffer body 6 with a built-in rod 67a and a compression coil spring.
7b, the outer tank 24 is suspended from four corners of the outer frame 21 to support the buffer.

Next, the configuration and operation of the reduction gear 36 will be described with reference to FIG.

FIG. 3 is a longitudinal sectional view showing details of the reduction gear transmission 36. As shown in FIG.
The case 71 supports the upper housing shaft 83 and the output shaft 36a via the bearings 72. The spring break pin 73 is
It is fixed to the wafer case 71 by means such as caulking.
The coil spring 74 locks the rotation of the upper housing shaft 83 at the time of washing.When viewed from the input shaft 36b, the coil spring 74 has a loose side for left rotation and a tight side for right rotation. As such, the coil spring 74 has an arm portion, a pin engagement portion, and a hook portion, and is wound.

The boss 78 is engaged with the sita shaft 82 by a spline,
The bent portion of the clutch spring 76 is engaged with the spring engaging portion. A clutch spring 76 is engaged with the outer periphery of the boss 79 and the boss 78, and is engaged with both bosses with a clearance with no interference. The spring collar 2 is provided on the outer periphery of the clutch spring 76, and a ratchet blade 1 described later is integrated therewith. Further, a ratchet claw 5 of a ratchet portion 1 described later is engaged with the ratchet blade 1. The right end of the spring collar 2 has a spring engagement groove that engages with the bent portion of the clutch spring 75, and the left end of the spring collar 2 has a plurality of spring engagement grooves that engage with the clutch spring 76. .

The clutch spring 75 is engaged with the boss 78 and the pulley boss 77 with a slight interference, and the left end thereof is lowered in the axial direction and is engaged with the hole of the boss 78 to prevent the clutch spring 75 from slipping. The brake plate 80 is engaged with the boss 79 and is fixed to the sita case 88 via the ratchet plate 6 with screws.

When the input shaft 36b rotates rightward when viewed from the input shaft 36b by the motor 35 during washing, power is not transmitted because the clutch spring 75 is in the loosening direction, and the rotation of the input shaft 36b is Output shaft through gears 85, 86, 87
It is transmitted to 36a. The gear shaft 84 is rotatably supported via a sita shaft 82, a bearing 91 and an oil seal 89, and the reduction gears 85 and 86 are integrated and rotatably fixed to the sita shaft 82. The output shaft 36a is also
7 are integrated, and are axially supported via an upper housing shaft 83, a bearing 90, and an oil seal 92. At this time, the upper housing shaft
83 also tries to rotate due to inertia, but in the tightening direction of the coil spring 74, rotation is prevented.

Next, when the input shaft 36b rotates to the left, the clutch spring 75 is in the tightening direction, but the rotation is prevented by the ratchet pawl 5 of the spring collar 2 as described later. Then, the engaging portion of the clutch spring 75 is locked in the engaging groove of the spring collar 2, and the clutch spring 75 is loosened. Therefore, the rotation of the input shaft 36b is transmitted to the output shaft 36a. At this time, the coil spring 74 is in a loosening direction and does not operate, but the rotation of the input shaft 36b is transmitted to the boss 78 via the sita shaft 82 integrally connected to the upper housing shaft 83 and the spline portion, Since the bent portion of the clutch spring 76 and the spring engaging portion of the boss 78 are engaged, the clutch spring 76
Is wound around the outer periphery of the bosses 78 and 79 and transmitted to the brake plate 80, so that the rotation of the upper housing shaft 83 due to inertia is prevented.

Next, at the time of dehydration, first, the switching motor 9
The ratchet blade 1 of the ratchet claw 5
And the spring collar 2 is released.
At this time, by rotating the input shaft 36b to the left, the clutch spring 75 is pulled toward the tightening direction by the pulley boss 77 and the boss 78.
The rotation is transmitted to the shifter shaft 82 and the upper housing shaft 83 through the output shaft 36, and the output shaft 36a rotates at high speed. At this time, the clutch spring 76 rotates integrally with the spring collar 2 but does not wind around the boss 79 because it is engaged without any interference. Further, the coil spring 74 is in the loosening direction.

Next, the configuration and operation of the ratchet unit 1 will be described with reference to FIGS. Fig. 4 is a plan view of the ratchet unit 1 at the time of washing viewed from the input shaft 36a direction, Fig. 6 is a plan view of the same during dehydration, Fig. 5 is a side view, and Fig. 7 is a connection diagram of the switch SW10. Is shown.

As shown in the figure, a large number of ratchet blades 1 (24 in this example) are provided on the spring collar 2 in equal divisions. The ratchet pawl 5 is rotatably supported on the ratchet plate 6 at 15, and one end 3 of the ratchet pawl 5 is shaped to engage with the ratchet blade 1 to prevent the spring collar 2 from rotating. At this time, the shaft 15 which is the center of rotation of the ratchet pawl 5 is disposed substantially in the tangential direction of the spring collar 2 so that the ratchet pawl 5 bites slightly. A cam surface 4 is provided at the other end of the ratchet pawl 5, and a spring 7 constantly biases the ratchet pawl 5 to rotate counterclockwise between the ratchet pawl 5 and a pin fixed to a bent portion of the ratchet plate 6. . The cam surface 4 is arranged so as to come into contact with or separate from the cam pin 8 when the cam pin 8 rotates, and is separated in the washing state shown in FIG.
The cam pin 8 is provided on the output shaft of a switching motor 9 that rotates at a single speed with a speed reducer, and rotates together. The switching motor 9 is fixed to the ratchet plate 6 with screws. The switch SW10 is fixed to the main body of the switch motor 9, the button 14 is pressed in FIG. 4, and the contacts 11 and 12 are connected. At this time,
The connection of the switch SW10, the relay SW93, and the switch motor 9 is configured as shown by the solid line in FIG.

At the time of dehydration, when the relay SW93 is instructed and connected by a microcomputer or the like in the direction shown by the dotted line in FIG. 7, the cam pin 8 starts rotating counterclockwise. When the cam pin 8 rotates by approximately 180 °, the pressing of the button 14 is released as shown in FIG. 6, and the contacts 11 and 13 are connected. Then, the power supply to the switching motor 9 is cut off, and the cam pin 8 stops. At the same time, the cam pin 8 comes into contact with the cam surface 4 and rotates the ratchet pawl 5 clockwise to release the engagement between the ratchet blade 1 and the ratchet pawl 5. Therefore, the spring collar 2 is in a free state.

〔The invention's effect〕

According to the present invention, the power supply to the motor that drives the ratchet pawl is interrupted until the rotation of the drum due to dehydration is stopped. Therefore, it is possible to prevent the generation of an impact sound and the application of an excessive impact force to the speed reducer.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a fully automatic washing / drying machine according to one embodiment of the present invention, FIG. 2 is a sectional view taken along line XX of FIG. 1, and FIG. FIG. 4 is a vertical cross-sectional view, FIG. 4 is a plan view seen from the input shaft direction when the ratchet unit 1 is washed, FIG. 5 is a side view, FIG. And the connection diagram of the switching SW. DESCRIPTION OF SYMBOLS 1 ... Ratchet blade, 2 ... Spring collar, 4 ... Cam surface 5 ... Ratchet pawl, 8 ... Cam pin, 9 ... Switching motor 10 ... Switching S
W, 27 ... drum, 35 ... motor, 36 ... reduction gear.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-62-82999 (JP, A) JP-A-58-10091 (JP, A) JP-A-56-24000 (JP, A) 38794 (JP, B1) Jikken Sho 53-49241 (JP, Y1) (58) Fields investigated (Int. Cl. ⁶ , DB name) D06F 37/40 D06F 25/00

Claims (2)

(57) [Claims] 1. A washing machine in which a drum serving as a washing tub and a dewatering tub is horizontally supported in a vibration-proof supported outer tub to perform washing and dewatering, wherein a motor for generating a rotational driving force for the drum is provided. And a speed reducer having a clutch device and a speed reducer for transmitting the rotational driving force of the motor to the drum in accordance with the two rotation states of the drum, wherein the clutch device has a ratchet blade on its outer periphery. A spring collar, a ratchet pawl having a ratchet-shaped portion engaged with the ratchet blade and rotatably provided on an outer peripheral portion of the spring collar, and a driving device for driving the ratchet pawl; A motor for generating a driving force for the ratchet pawl, and a switch for cutting off the power supply to the motor, wherein the ratchet pawl is engaged with the ratchet blade during washing, Sometimes to release the engagement of the ratchet pawl and the ratchet blade, washer, characterized by interrupting the power supply to the motor for driving the ratchet pawl to stop the rotation of the drum due to dehydration. 2. A drum which also functions as a drying container which serves as a washing tub and a dehydrating tub, and means for supplying hot air into the drum, wherein the drum is horizontally supported in an outer tub supported by vibration isolation. A washing / drying machine that supports and performs washing, dehydration, and drying, a motor that generates a rotational driving force of the drum, and a clutch that transmits the rotational driving force of the motor to the drum according to two rotation states of the drum. And a reduction gear having a reduction gear, wherein the clutch device has a spring collar provided with a ratchet blade on the outer periphery, and a ratchet-shaped portion that engages with the ratchet blade, and rotates around the outer periphery of the spring collar. A ratchet pawl provided so as to be capable of being driven, and a driving device for driving the ratchet pawl, wherein the driving device generates a driving force for the ratchet pawl, and supplies power to the motor. A switch to disconnect the ratchet pawl with the ratchet blade during washing, disengage the ratchet pawl with the ratchet blade during dehydration, and hold the ratchet pawl until rotation of the drum due to dehydration stops. A washer / dryer characterized by cutting off power supply to a driving motor.