JP3995787B2 - Fully automatic washing machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fully automatic washing machine, and more particularly to a fully automatic washing machine including a clutch mechanism that can electrically and arbitrarily switch the release of a dehydrating shaft and a washing shaft.
[0002]
[Prior art]
A conventional clutch mechanism of this type of fully automatic washing machine is disclosed in, for example, JP-A-7-178284. As disclosed in Japanese Patent Laid-Open No. 7-178284, as shown in FIG. 13, a hollow dewatering shaft 27 fixed to a dewatering tub and provided with a meshing portion 26 at an end, and the outer periphery of the washing shaft 28 in the thrust direction. A fully automatic washing machine provided with a plunger 30 provided with a driving portion 29 that is displaced and meshed with the meshing portion 26 at the end, and a solenoid 31 that releases the connection between the dewatering shaft 27 and the washing shaft 28 via the plunger 30. is there.
[0003]
In this fully automatic washing machine, when the solenoid 31 is energized during the dehydrating operation, the plunger 30 is displaced upward, and the driving portion 29 at the end of the plunger is brought into contact with the meshing portion 26 at the end of the dewatering shaft to engage with each other. The dehydrating shaft 27 and the washing shaft 28 are connected. During the washing and rinsing operation, the solenoid 31 is not energized, the plunger 30 moves downward by its own weight, and the engagement between the drive portion 29 at the plunger end and the engagement portion 26 at the dewatering shaft end is separated. The connection between the dewatering shaft 27 and the washing shaft 28 is released. In addition, 32 is a bearing, 33 is a metal bearing, 34 is a serration, 35 is a drive motor.
[0004]
There are also those disclosed in Japanese Patent Laid-Open No. 8-66581. As disclosed in Japanese Patent Laid-Open No. 8-66581, as shown in FIG. 14, a movable engagement portion 36 is attached to a bottom surface of an outer water tank supported by a suspension in a main body by a bearing and slides in an end portion in a thrust direction. A hollow dewatering shaft 37 provided with a dewatering tank fixed to the dewatering shaft 37, and a bearing in the dewatering shaft 37. In Thus, a washing shaft 38 supported and mounted with a pulsator in the dewatering tank, a drive motor 41 provided with a fixed engagement portion 40 in a rotor portion 39 interlocked with the washing shaft 38, and an iron core for moving the movable engagement portion 36. This is a fully automatic washing machine provided with a solenoid 43 composed of 42 and a coil.
[0005]
In this fully automatic washing machine, the iron core 42 is pushed out by energizing the solenoid 43 during washing and rinsing, and the taper 44 provided at the end pushes up the movable engagement portion 36, and the movable engagement portion 36 and the fixed engagement portion 40. Is unlinked. At the time of dehydration, the solenoid 43 is de-energized, and the movable engaging portion 36 is lowered by its own weight to push back the iron core 42 and engage with the opposing fixed engaging portion 40. Incidentally, 45 is a serration, 46 is a taper provided on the entire circumference of the movable engaging portion 36, and 47 is a stator of the drive motor 41.
[0006]
[Problems to be solved by the invention]
The clutch mechanism disclosed in Japanese Patent Laid-Open No. 7-178284 has a structure in which the solenoid is energized during dehydration operation to move the plunger upward, and the drive portion and the meshing portion are engaged by surface contact. The clutch mechanism disclosed in Japanese Patent Application Laid-Open No. 8-66581 discloses that the solenoid is energized horizontally during washing and rinsing to move the iron core horizontally, and the meshing portion is released by pushing up the movable meshing portion with the tapered portion at the tip, During dehydration, the structure is configured such that the iron core is pushed back by de-energizing the movable engagement portion by lowering its own weight, and at the same time, the movable engagement portion and the fixed engagement portion are engaged by surface contact from above and below. That is, both have a structure in which both meshing portions mesh with each other at the time of dehydration.
[0007]
However, since the initial rotational load torque during dehydration operation is large in proportion to the washing capacity of the washing machine, in order to transmit sufficient rotational torque at the meshing part, the contact area of the meshing part must be large and sufficient machine In order to give strength, it is necessary to make the plunger (or the movable engaging portion) itself a rigid body having a high rigidity. Along with this, the electromagnetic force of the solenoid for moving upward due to the weight of the plunger (or the movable engaging portion) needs to be considerably large. That is, in these structures, there is a problem that the volume of the meshing portion of the clutch is increased, and a large power consumption is required for the solenoid.
[0008]
The fully automatic washing machine of the present invention has been made to solve such a problem, and the first object thereof is to easily assemble and repair and to disassemble the washing shaft and the dewatering shaft arbitrarily. It is to provide a clutch mechanism that can be used.
[0009]
In addition, the second purpose is a clutch mechanism that has a compact structure of the meshing part, and can arbitrarily connect or release the washing shaft and the dewatering shaft. The object is to provide a method capable of keeping the height of the machine body low.
[0010]
A third object of the present invention is to provide a clutch mechanism that can arbitrarily connect or release the washing shaft and the dewatering shaft arbitrarily and can reliably maintain the state in accordance with the operation stroke of the fully automatic washing machine. is there.
[0011]
A fourth object is to provide a clutch mechanism that can arbitrarily connect or release the washing shaft and the dewatering shaft with less power consumption.
[0012]
Furthermore, a fifth object is to provide a clutch mechanism that can arbitrarily connect or release the washing shaft and the dewatering shaft, and in particular, a method for reliably performing the clutch switching operation when the solenoid is energized. .
[0013]
Furthermore, a sixth object is to provide a highly safe clutch mechanism that can arbitrarily connect or release the washing shaft and the dewatering shaft and can detect an abnormal operation.
[0014]
[Means for Solving the Problems]
The fully automatic washing machine of the present invention solves the above-mentioned problems. In order to achieve the first object, the invention according to claim 1 includes a main body and an outer body supported by a suspension in the main body. A water tank, a hollow dewatering shaft supported by a bearing having a bearing attached to the bottom surface of the outer water tank at a predetermined interval, a dewatering tank fixed to the dewatering shaft, and supported by the bearing in the dewatering shaft, A washing shaft with a pulsator attached in the dewatering tank, a drive motor attached to the lower portion of the bearing in conjunction with the washing shaft, an electromagnetic solenoid provided between the bearing and the driving motor, and the iron core of the electromagnetic solenoid being hollow A washing boss that rotates in conjunction with the washing shaft passes through the inside of the dewatering shaft, the washing shaft, and the washing shaft, and the inner circumference of the iron core is outside the washing boss portion. A spring which is slidably fitted to a groove provided in the longitudinal direction and slidably fitted to a groove provided in the longitudinal direction on the outer periphery of the dewatering shaft, and further includes a spring for returning the iron core, When rinsing, the electromagnetic solenoid is energized, and the electromagnetic force causes the iron core to strike the repulsive force of the spring in the thrust direction. Descent Move, the engagement between the iron core and the groove portion of the dewatering shaft is released, and the iron core is engaged only with the groove portion of the washing boss portion, thereby releasing the connection between the dewatering shaft and the washing shaft. The electromagnetic solenoid is not energized, and the iron core is thrust in the thrust direction by the repulsive force of the spring. Rise The clutch is connected to the dewatering shaft and the washing shaft by moving and engaging the groove of the dewatering shaft and the groove of the washing boss. is there.
[0015]
In order to achieve the second object, the invention described in claim 2 includes a main body, an outer water tank supported by a suspension in the main body, and a bearing attached to the bottom surface of the outer water tank at a predetermined interval. A hollow dewatering shaft supported by a bearing having a dewatering tank fixed to the dewatering shaft, a washing shaft supported by a bearing in the dewatering shaft, and attached with a pulsator in the dewatering tank, and a lower portion of the bearing A drive motor attached in conjunction with the washing shaft, and an electromagnetic solenoid provided so as to be positioned in a central recess of the drive motor at a lower portion of the bearing. A washing boss portion rotating in conjunction with the washing shaft passes through the washing shaft and the outer circumference of the washing shaft, and the inner circumference of the iron core is provided in the longitudinal direction on the outer circumference of the washing boss portion. The electromagnetic solenoid is provided with a spring that slidably fits with a groove and slidably fits with a groove provided in the longitudinal direction on the outer periphery of the dehydrating shaft, and further returns the iron core. Is in the energized state, and the iron core is exposed to the repulsive force of the spring in the thrust direction by the electromagnetic force. Descent Moving, the engagement between the iron core and the groove portion of the dewatering shaft is released, and the iron core is engaged only with the groove portion of the washing boss portion, so that the connection between the dewatering shaft and the washing shaft is released. The electromagnetic solenoid is not energized, and the iron core is thrust in the thrust direction by the repulsive force of the spring. Rise The clutch is connected to the dewatering shaft and the washing shaft by moving and engaging the groove of the dewatering shaft and the groove of the washing boss. is there.
[0016]
In order to achieve the third object, the invention according to claim 3 is the construction of the invention according to claim 1 or 2, wherein the washing shaft is made of a non-magnetic material and the dewatering shaft is made of a magnetic material. The spring is located at the lower part of the iron core and at the upper part of the spring holding part, and the inner periphery of the iron core meshes with the B groove part of the dehydrating shaft while the solenoid is not energized and the spring is extended. In the state where the shaft and the washing shaft are connected, and the solenoid is energized and the spring is compressed, the inner periphery of the iron core is not engaged with the B groove portion of the dewatering shaft, and thus the dewatering shaft and the washing shaft are not connected. It will be made.
[0017]
Furthermore, in order to achieve the fourth object, the invention according to claim 4 is the configuration of the invention according to claim 1, claim 2, or claim 3, and after the solenoid is energized, The configuration is such that the applied power is reduced to maintain the operating state.
[0018]
Furthermore, in order to achieve the fourth object, the invention according to claim 5 is a so-called keep, in which the solenoid has a built-in permanent magnet in the structure of the invention according to claim 1, claim 2 or claim 3. A solenoid, the dewatering shaft and the washing shaft Release Only during operation, the solenoid is energized for a short time, the iron core moves in the thrust direction, and the dehydrating shaft and the washing shaft Release After completing the operation, even if the solenoid is de-energized, the permanent magnet Magnetic force Therefore, it is configured to be able to hold the position of the iron core.
[0019]
In order to achieve the fifth object, the invention according to claim 6 is the construction of the invention according to any one of claims 1 to 5, wherein the dehydrating shaft and the washing shaft are provided. Release During operation, while moving the iron core in the thrust direction, the drive motor is rotated at a low speed for a predetermined time in the forward rotation direction, the reverse rotation direction, or both directions, and the dehydrating shaft and the washing shaft Release It is configured to perform the operation.
[0020]
In order to achieve the fifth object, according to a seventh aspect of the present invention, when the dehydrating shaft and the washing shaft are connected or released by the clutch mechanism, the drive motor is rotated in the forward rotation direction, the reverse rotation direction, or In both directions, rotate at a low speed for a predetermined time, and the number of rotations of the motor at that time, or the current value of the motor, the number of rotations of the dehydration tank detected by the rotation sensor, or the number of rotations of the pulsator detected by the rotation sensor, It is configured to detect that the connection or release operation has been completed, and then shift to the next stroke operation.
[0021]
In order to achieve the sixth object, the invention according to claim 8 is provided with a temperature detector for detecting the coil winding temperature of the electromagnetic solenoid, and the dehydrating shaft and the washing shaft. Release The operation of the clutch mechanism is judged from the temperature detected by the temperature detector when the coil winding is energized for operation, and the coil winding is de-energized, and either the washing, rinsing process or dehydrating process is performed. Alternatively, it is configured not to perform all, to cut off the power supply to the drive motor, and to display an abnormality notification display.
[0022]
With the above configuration, the invention according to claim 1 When washing and rinsing, the electromagnetic solenoid is energized and electromagnetic Solenoid iron core Electromagnetic solenoid Sliding displacement in the thrust direction by electromagnetic force, dehydrating shaft And the washing shaft are disconnected ,Also Electromagnetic during dehydration Spring when solenoid is de-energized Repulsive force By Dehydration shaft and washing shaft are connected By dehydrating shaft and washing shaft Ream Operates so that it can be tied or released.
[0023]
The invention according to claim 2 When washing and rinsing, the electromagnetic solenoid is energized and electromagnetic Solenoid iron core Electromagnetic solenoid Sliding displacement in the thrust direction by electromagnetic force , Prolapse Water axis And the washing shaft are disconnected ,Also Electromagnetic during dehydration Spring when solenoid is de-energized Repulsion By Dehydration shaft and washing shaft are connected By dehydrating shaft and washing shaft Ream Operates so that it can be disconnected.
[0024]
In the invention according to claim 3, the inner periphery of the iron core meshes with the B groove portion of the dewatering shaft in a state where the solenoid is de-energized at the time of dewatering and the spring is extended, thereby connecting the dewatering shaft and the washing shaft. is doing. Further, when the solenoid is energized during washing and rinsing and the spring is compressed, the inner periphery of the iron core is not engaged with the B-groove portion of the dewatering shaft, so that the dewatering shaft and the washing shaft are not connected. The power consumption of the solenoid is greatest at the initial stage of sucking the iron core, and if the iron core is stopped at the position where the suction is completed, less power is required to hold it. However, when the position of the iron core is shifted by an external force such as vibration, the power consumption increases to return it to the original position. At the time of dehydration, rotation of the dehydration tub causes a greater vibration to be transmitted to the clutch mechanism than at the time of washing and rinsing. However, in the configuration of the present invention, the solenoid is in a non-energized state, and the state of the clutch is maintained by the repulsive force of the spring. . During washing and rinsing, the vibration due to the pulsator rotation is small, so there is almost no fluctuation in the iron core position of the energized solenoid, and the power of the solenoid for holding does not fluctuate. That is, the solenoid is de-energized during dehydration, the clutch state is maintained by the repulsive force of the spring, and the solenoid is energized during washing and rinsing to hold the clutch state by electromagnetic force. In addition, it is possible to maintain a reliable state.
[0025]
According to the fourth aspect of the present invention, after the solenoid of the clutch mechanism is operated, the power applied to the solenoid is decreased to maintain the operation. The power consumption of the solenoid is greatest at the initial stage of sucking the iron core that is far from the coil winding, and less power is required to hold the iron core if it is stopped at the position where the suction is completed. Therefore, the power consumption can be suppressed by reducing the power applied to the electromagnetic solenoid after the operation to maintain the operation.
[0026]
Furthermore, the invention according to claim 5 is a dewatering shaft and a washing shaft. Release Only during operation, the keep-type solenoid is energized for a short time, and the iron core slides in the thrust direction. Release After completing the operation, the permanent magnet Magnetic force Therefore, it operates so that the position of the iron core can be maintained. Therefore, power consumption can be suppressed.
[0027]
Furthermore, the invention according to claim 6 is a dewatering shaft and a washing shaft. Release In operation, the drive motor is rotated at a low speed for a predetermined time in the forward rotation direction, the reverse rotation direction, or both directions while sliding the iron core in the thrust direction. This is an iron core and dehydrating shaft Groove Part, washing boss part Groove While fitting the fitting position of serration etc. which is the sliding engagement part with the part Cancel Will do the action, surely Release Can act. According to the present invention, since the alignment of the engagement is performed by the rotation of the drive motor, sliding engagement can be achieved even if the number of serration grooves is small if the engagement portion is provided with a taper process. Therefore, the processing of the iron core is less, and the strength can be secured even with a thin wall thickness.
[0028]
According to the seventh aspect of the present invention, when the dehydrating shaft and the washing shaft are connected or released by the clutch mechanism, the drive motor is rotated at a low speed for a predetermined time in the forward rotation direction, the reverse rotation direction, or both directions, Since it is detected that the connection or release operation has been completed reliably by the motor rotation speed, motor current value, dehydration tank rotation speed, or pulsator rotation speed at that time, the process proceeds to the next stroke operation. It is possible to shift to the next stroke operation in a state where the connection or release operation of the clutch mechanism is reliably completed.
[0029]
The invention according to claim 8 is a dewatering shaft and a washing shaft. Release The operation of the clutch mechanism is judged based on the temperature detected by the temperature detector when the coil winding of the solenoid is energized for operation, and the coil winding is de-energized, washed, rinsed and dewatered. The power supply to the drive motor is cut off, and an abnormality notification display is performed. Therefore, it is possible to prevent burnout due to overheating of the coil winding and failure of other parts resulting therefrom, and to promptly notify the user by displaying an abnormality notification, thereby making early repair and repair possible.
[0030]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a fully automatic washing machine according to an embodiment of the present invention will be described with reference to FIGS.
[0031]
First, a first embodiment (Claims 1 to 3) of a fully automatic washing machine according to the present invention will be described with reference to FIGS.
[0032]
1 and 2, reference numeral 3 denotes an outer water tank elastically suspended by a plurality of suspensions 2 in the washing machine body 1, and has a dewatering tank 4 supported by a dewatering shaft 7 inside. Reference numerals 18 and 19 denote bearings that support the dehydrating shaft 7. Reference numeral 6 denotes a washing shaft penetrating through the hollow interior of the dewatering shaft 7 and the washing boss portion 10. The washing shaft 6 has a pulsator 5 attached in the dewatering tub 4 and a rotor 15 of a drive motor 16 is connected to the other end. Reference numeral 14 denotes a stator of the drive motor 16.
[0033]
The dewatering shaft 7 has a large volume, but the dewatering tank 4 has a large volume, but it is only necessary to slowly increase the rotation speed. Therefore, the load torque is not so large and may be made of an inexpensive magnetic material such as iron.
[0034]
On the other hand, since it is necessary to raise the rotation speed of the pulsator 5 at the same time, the washing shaft 6 may be made of a nonmagnetic material having a high load torque and high strength such as stainless steel. The outer peripheral surface of the washing shaft 6 and the inner peripheral surface of the washing boss portion 10 are fitted by serrations provided in the longitudinal direction and rotate in conjunction with each other.
[0035]
Between the bearings 18 and 19 and the drive motor 16, a solenoid 13 comprising a coil winding 12, an iron core 11, and a spring 17 is provided, and the inner circumference of the iron core 11 is provided in the longitudinal direction on the outer circumference of the washing boss portion 10. The groove 8 is slidably fitted to the A groove 8 and is slidably fitted to the B groove 9 provided in the longitudinal direction on the outer periphery of the dehydrating shaft 7. Reference numeral 20 denotes a drain valve for draining the washing water of the outer water tank 3.
[0036]
Next, the operation in the above configuration will be described.
[0037]
The coil winding 12 of the solenoid 13 is energized during washing and rinsing, and the electromagnetic force causes the iron core 11 to move downward in the thrust direction against the repulsive force of the spring 17, and the iron core 11 and the B groove portion 9 of the dewatering shaft 7. Thus, the iron core 11 is engaged only with the A groove portion 8 of the washing boss portion 10, so that the connection between the dewatering shaft 7 and the washing shaft 6 is released and the pulsator 5 is interlocked with the rotation of the drive motor 16. It rotates and mechanical force is given to the laundry.
[0038]
During dehydration, the coil winding 12 of the solenoid 13 is in a non-energized state, and the iron core 11 is moved upward in the thrust direction by the repulsive force of the spring 17, and the iron core 11 is formed between the B groove portion 9 of the dewatering shaft 7 and the washing boss portion 10. The dewatering shaft 7 and the washing shaft 6 are connected to each other with the A groove portion 8, and the dewatering tub 4 simultaneously rotates at the same time as the pulsator 5 in conjunction with the rotation of the drive motor 16 to dehydrate the laundry. Do.
[0039]
As described above, in the present invention, a structure is provided in which a spring and a ring-shaped iron core slidable in the thrust direction by serration coupling or the like are fitted to the outer periphery of the dewatering shaft and the washing shaft, and a cylindrical coil winding portion is fitted around the periphery. Therefore, the present invention provides a clutch mechanism that is easy to assemble and disassemble.
[0040]
Further, according to the present invention, when the coil winding 12 of the solenoid 13 is not energized at the time of dehydration and the spring 17 is extended, the inner periphery of the iron core 11 is engaged with the B groove portion 9 of the dewatering shaft 7. 6 are connected. In addition, when the coil winding 12 of the solenoid 13 is energized during washing and rinsing and the spring 17 is compressed, the inner periphery of the iron core 11 is not engaged with the B groove portion 9 of the dewatering shaft 7, and thus the dewatering shaft 7 and the laundry are washed. It operates so as not to connect the shaft 6.
[0041]
The applied power of the solenoid is greatest at the initial stage of sucking the iron core, and if the iron core is stopped at the position where the suction is completed, the applied power for holding may be small. However, when the position of the iron core is shifted by an external force such as vibration, the applied power increases to return it to the original position. At the time of dehydration, the vibration of the dehydration tank is transmitted to the clutch mechanism portion by rotation of the dewatering tank, but in the configuration of the present invention, the state of the clutch is maintained by the repulsive force of the spring.
[0042]
In washing and rinsing, vibration due to pulsator rotation is small, so that there is almost no fluctuation in the iron core position of the energized solenoid, and the solenoid applied power for holding may not be large. That is, the solenoid is de-energized during dehydration, the clutch state is maintained by the repulsive force of the spring, and the solenoid is energized during washing and rinsing to hold the clutch state by electromagnetic force. In addition, it is possible to maintain a reliable state.
[0043]
In the embodiment of the present invention, the example in which the outer peripheral surface of the washing shaft 6 and the inner peripheral surface of the washing boss portion 10 are fitted by serration has been described. However, for example, press fitting or screw groove fitting is interlocked. Needless to say, this method has the same effect as long as it is a coupling method for rotating the motor.
[0044]
Next, the present invention As a reference example Second embodiment of fully automatic washing machine State This will be described with reference to FIG.
[0045]
In this embodiment, the entire configuration of the fully automatic washing machine is the same as that shown in FIG. 2, so the same parts are denoted by the same reference numerals and the description thereof will be omitted. Hereinafter, differences will be mainly described.
[0046]
In FIG. 3, a solenoid 13 including a coil winding 12, an iron core 11, and a spring 17 is provided between a bearing 19 and the drive motor 16, and the inner circumference of the iron core 11 is provided in the longitudinal direction on the outer circumference of the washing boss portion 10. It can be slidably fitted to the A groove 8 and can be slidably fitted to the B groove 9 provided in the longitudinal direction on the outer periphery of the dehydrating shaft 7. The iron core 11 is disposed below the spring 17.
[0047]
Next, the operation in the above configuration will be described.
[0048]
During washing and rinsing, the coil winding 12 of the solenoid 13 is in a non-energized state, and the iron core 11 is moved downward in the thrust direction by the repulsive force of the spring 17, and the engagement between the iron core 11 and the B groove portion 9 of the dewatering shaft 7 is released. Thus, the iron core 11 is engaged only with the A groove portion 8 of the washing boss portion 10, so that the connection between the dewatering shaft 7 and the washing shaft 6 is released, and the pulsator 5 rotates in conjunction with the rotation of the drive motor 16. Mechanical power is applied to the laundry.
[0049]
At the time of dehydration, the coil winding 12 of the solenoid 13 is energized, and the iron core 11 moves upward in the thrust direction against the repulsive force of the spring 17 due to the electromagnetic force, and the iron core 11 is connected to the B groove portion 9 of the dewatering shaft 7. The dewatering shaft 7 and the washing shaft 6 are connected to each other with the A groove portion 8 of the washing boss portion 10, and the dewatering tank 4 is rotated at a high speed simultaneously with the pulsator 5 in conjunction with the rotation of the drive motor 16. Dehydrate laundry.
[0050]
Like this Reference example In the structure, a spring and a ring-shaped iron core that can slide in the thrust direction by serration coupling etc. are fitted on the outer periphery of the dewatering shaft and the washing shaft, and a cylindrical coil winding part is fitted around it. The present invention also provides a clutch mechanism with good decomposability.
[0051]
still, this In the embodiment, an example in which the outer peripheral surface of the washing shaft 6 and the inner peripheral surface of the washing boss portion 10 are fitted by serration has been described. However, for example, press-fitting or screw groove fitting is used to rotate in conjunction with each other. Needless to say, the combined method has the same effect.
[0052]
Next, a third embodiment of the fully automatic washing machine of the present invention (embodiments of claims 2 and 3) will be described with reference to FIG.
[0053]
In this embodiment, the entire configuration of the fully automatic washing machine is the same as that shown in FIG. 1, and thus the same parts are denoted by the same reference numerals and the description thereof is omitted. Hereinafter, differences will be mainly described.
[0054]
In FIG. 4, the drive motor 16 includes a stator 14 and a rotor 15, and a solenoid 13 is provided so as to be positioned in the central recess of the rotor 15. The iron core 11 of the solenoid 13 has a hollow cylindrical shape, and the inside thereof has a dehydrating shaft 7 and a washing A washing boss portion 10 that rotates in conjunction with the washing shaft 6 passes through the outer circumference of the shaft 6 and the washing shaft 6, and the inner circumference of the iron core 11 is an A groove portion provided in the longitudinal direction on the outer circumference of the washing boss portion 10. 8 includes a spring 17 and a spring retainer 21 which are slidably fitted to the outer periphery of the dehydrating shaft 7 and slidably fitted to a B groove portion 9 provided in the longitudinal direction on the outer periphery of the dehydrating shaft 7. Yes.
[0055]
The dewatering shaft 7 is a rotational load, and the dewatering tank 4 has a large volume, but it is sufficient to slowly increase the rotational speed. Therefore, the load torque is not so large, and the dewatering shaft 7 may be made of an inexpensive magnetic material such as iron. On the other hand, since it is necessary to raise the rotation speed of the pulsator 5 at the same time, the washing shaft 6 may be made of a nonmagnetic material having a high load torque and high strength such as stainless steel.
[0056]
The outer peripheral surface of the washing shaft 6 and the inner peripheral surface of the washing boss portion 10 are fitted by serrations provided in the longitudinal direction and rotate in conjunction with each other. The iron core 11 slides in the thrust direction by serration coupling or the like with the outer periphery of the dehydrating shaft 7 and the outer periphery of the washing boss portion 10 on the inner peripheral surface thereof, and receives the rotational load torque of the shaft by the sliding surface. is there.
[0057]
Next, the operation in the above configuration will be described.
[0058]
The coil winding 12 of the solenoid 13 is energized during washing and rinsing, and the electromagnetic force causes the iron core 11 to move downward in the thrust direction against the repulsive force of the spring 17, and the iron core 11 and the B groove portion 9 of the dewatering shaft 7. Thus, the iron core 11 is engaged only with the A groove portion 8 of the washing boss portion 10, so that the connection between the dewatering shaft 7 and the washing shaft 6 is released and the pulsator 5 is interlocked with the rotation of the drive motor 16. It rotates and mechanical force is given to the laundry.
[0059]
During dehydration, the coil winding 12 of the solenoid 13 is in a non-energized state, and the iron core 11 is moved upward in the thrust direction by the repulsive force of the spring 17, and the iron core 11 is formed between the B groove portion 9 of the dewatering shaft 7 and the washing boss portion 10. The dewatering shaft 7 and the washing shaft 6 are connected to each other with the A groove portion 8, and the dewatering tub 4 simultaneously rotates at the same time as the pulsator 5 in conjunction with the rotation of the drive motor 16 to dehydrate the laundry. Do.
[0060]
Thus, in this invention, the thickness of the iron core can be reduced by configuring the iron core with a material having high mechanical strength, and thus the clutch mechanism can be configured in a compact shape. And the clutch mechanism which can suppress the height of a washing machine main body low by providing the compact clutch mechanism in the center recessed part of a drive motor is provided.
[0061]
Further, according to the present invention, when the coil winding 12 of the solenoid 13 is not energized at the time of dehydration and the spring 17 is extended, the inner periphery of the iron core 11 is engaged with the B groove portion 9 of the dewatering shaft 7. 6 are connected. In addition, when the coil winding 12 of the solenoid 13 is energized during washing and rinsing and the spring 17 is compressed, the inner periphery of the iron core 11 is not engaged with the B groove portion 9 of the dewatering shaft 7, so that the dewatering shaft 7 and the washing shaft 6 is not connected.
[0062]
The applied power of the solenoid is greatest at the initial stage of sucking the iron core, and if the iron core is stopped at the position where the suction is completed, the applied power for holding may be small. However, when the position of the iron core is shifted by an external force such as vibration, the applied power increases to return it to the original position. At the time of dehydration, the vibration of the dehydration tank is transmitted to the clutch mechanism portion by rotation of the dewatering tank, but in the configuration of the present invention, the state of the clutch is maintained by the repulsive force of the spring.
[0063]
In washing and rinsing, vibration due to pulsator rotation is small, so that there is almost no fluctuation in the iron core position of the energized solenoid, and the solenoid applied power for holding may not be large. That is, the solenoid is de-energized during dehydration, the clutch state is maintained by the repulsive force of the spring, and the solenoid is energized during washing and rinsing to hold the clutch state by electromagnetic force. In addition, it is possible to maintain a reliable state.
[0064]
In this embodiment, the example in which the outer peripheral surface of the washing shaft 6 and the inner peripheral surface of the washing boss portion 10 are fitted by serration has been described. However, for example, press-fitting or screw groove fitting or the like rotates together. It goes without saying that the same effect can be obtained as long as it is a combination method.
[0065]
Next, the present invention As a reference example Fourth embodiment of fully automatic washing machine State This will be described with reference to FIG.
[0066]
In this embodiment, the entire configuration of the fully automatic washing machine is the same as that shown in FIG. 4, and therefore, the same parts are denoted by the same reference numerals and description thereof is omitted. Hereinafter, differences will be mainly described.
[0067]
In FIG. 5, a solenoid 13 including a coil winding 12, an iron core 11, and a spring 17 is provided between the bearing 19 and the drive motor 16 and in the central recess of the rotor 15, and the inner periphery of the iron core 11 is washed. The outer periphery of the boss portion 10 can be slidably fitted with the A groove portion 8 provided in the longitudinal direction, and the outer periphery of the dehydrating shaft 7 can be slidably fitted with the B groove portion 9 provided in the longitudinal direction. The iron core 11 is disposed below the spring 17.
[0068]
The dewatering shaft 7 is a rotational load, and the dewatering tank 4 has a large volume, but it is sufficient to slowly increase the rotational speed. Therefore, the load torque is not so large, and the dewatering shaft 7 may be made of an inexpensive magnetic material such as iron.
[0069]
On the other hand, since it is necessary to raise the rotation speed of the pulsator 5 at the same time, the washing shaft 6 may be made of a nonmagnetic material having a high load torque and high strength such as stainless steel. The outer peripheral surface of the washing shaft 6 and the inner peripheral surface of the washing boss portion 10 are fitted by serrations provided in the longitudinal direction and rotate in conjunction with each other.
[0070]
The iron core 11 slides in the thrust direction by serration coupling or the like with the outer periphery of the dehydrating shaft 7 and the outer periphery of the washing boss portion 10 on the inner peripheral surface thereof, and receives the rotational load torque of the shaft by the sliding surface. It is.
[0071]
Next, the operation in the above configuration will be described.
[0072]
During washing and rinsing, the coil winding 12 of the solenoid 13 is in a non-energized state, and the iron core 11 is moved downward in the thrust direction by the repulsive force of the spring 17, and the engagement between the iron core 11 and the B groove portion 9 of the dewatering shaft 7 is released. Thus, the iron core 11 is engaged only with the A groove portion 8 of the washing boss portion 10, so that the connection between the dewatering shaft 7 and the washing shaft 6 is released, and the pulsator 5 rotates in conjunction with the rotation of the drive motor 16. Mechanical power is applied to the laundry.
[0073]
At the time of dehydration, the coil winding 12 of the solenoid 13 is energized, and the iron core 11 moves upward in the thrust direction against the repulsive force of the spring 17 due to the electromagnetic force, and the iron core 11 is connected to the B groove portion 9 of the dewatering shaft 7. The dewatering shaft 7 and the washing shaft 6 are connected to each other with the A groove portion 8 of the washing boss portion 10, and the dewatering tank 4 is rotated at a high speed simultaneously with the pulsator 5 in conjunction with the rotation of the drive motor 16. Dehydrate laundry.
[0074]
Like this Reference example Then, by constituting the iron core with a material having high mechanical strength, the thickness of the iron core can be reduced, and the clutch mechanism can be constituted in a compact shape. And the clutch mechanism which can suppress the height of a washing machine main body low by providing the compact clutch mechanism in the center recessed part of a drive motor is provided.
[0075]
In this embodiment, the example in which the outer peripheral surface of the washing shaft 6 and the inner peripheral surface of the washing boss portion 10 are fitted by serration has been described. However, for example, press-fitting or screw groove fitting or the like rotates together. It goes without saying that the same effect can be obtained as long as it is a combination method.
[0076]
Next, a fifth embodiment (another embodiment of claim 4) of the fully automatic washing machine of the present invention will be described with reference to FIG.
[0077]
In FIG. 6, reference numeral 12 denotes a coil winding of a solenoid, and the clutch mechanism including the solenoid may be any one of the above-described embodiments according to claim 1, claim 2, or claim 3.
[0078]
In FIG. 6, reference numeral 23 denotes a DC power supply circuit which can output two output voltages V1 and V2. However, the voltage V1> V2. A relay contact 24 switches a voltage applied to the coil winding 12.
[0079]
Next, the operation in the above configuration will be described.
[0080]
When the electromagnetic solenoid of the clutch mechanism is energized for the purpose of releasing or coupling the dewatering shaft and the washing shaft, for example, when switching from the washing and rinsing process to the dehydration process or vice versa, the relay contact at the start of energization Reference numeral 24 denotes an A contact side, and a high voltage V1 is applied to the coil winding 12 to operate the clutch mechanism.
[0081]
Thereafter, a washing machine control unit (not shown) made of a microcomputer or the like switches the relay contact to the B contact side, so that a voltage V2 lower than V1 is applied to the coil winding 12 so that the operation of the solenoid is maintained. To work. The applied power of the solenoid is the largest at the initial stage of sucking the iron core that is far from the coil winding, and the applied power for holding the iron core may be small if the iron core is stopped at the position where the suction is completed.
[0082]
The present invention provides a clutch mechanism capable of suppressing power consumption by reducing the power applied to the electromagnetic solenoid after the clutch mechanism is switched and maintaining the operation.
[0083]
In this embodiment, an example in which a DC power supply voltage corresponding to a DC solenoid is switched by a relay contact has been described. However, in the case of an AC solenoid, for example, an output voltage by a resistance voltage dividing circuit or a power supply circuit using a multi-output transformer, etc. Even if it is a method that uses a generation method, or a method that uses a switching circuit with a semiconductor switching element instead of a relay contact, etc., it is a circuit that applies and holds less power to the coil winding than during clutch switching operation. Needless to say, it has the same effect.
[0084]
Next, a sixth embodiment (embodiment of claim 5) of the fully automatic washing machine of the present invention will be described with reference to FIG.
[0085]
In this embodiment, the entire configuration of the fully automatic washing machine is the same as that shown in FIG. 1, and thus the same parts are denoted by the same reference numerals and the description thereof is omitted. Hereinafter, differences will be mainly described.
[0086]
In FIG. 5, the drive motor 16 is composed of a stator 14 and a rotor 15, and a solenoid 13 is provided so as to be located in the central recess of the rotor 15. The solenoid 13 is a so-called keep solenoid incorporating a permanent magnet 22, and includes an iron core 11, a coil winding 12, a permanent magnet 22, a spring 17 for returning the iron core 11, and a spring retainer 21.
[0087]
The iron core 11 of the solenoid 13 has a hollow cylindrical shape, and the inside of the dehydrating shaft 7, the washing shaft 6, and the washing shaft 6 have a washing boss portion 10 that rotates in conjunction with the washing shaft 6 passing therethrough. The inner periphery is slidably fitted with the A groove portion 8 provided in the longitudinal direction on the outer periphery of the washing boss portion 10 and is slidable with the B groove portion 9 provided in the longitudinal direction on the outer periphery of the dewatering shaft 7. Is fitted.
[0088]
Next, the operation in the above configuration will be described.
[0089]
At the time of dehydration, as shown in FIG. 7, the iron core 11 moves upward in the thrust direction and is held by the repulsive force of the spring 17. The iron core 11 meshes with both the B groove portion 9 of the dewatering shaft 7 and the A groove portion 8 of the washing boss portion 10, so that the dewatering shaft 7 and the washing shaft 6 are connected together with the pulsator 5 in conjunction with the rotation of the drive motor 16. The dewatering tank 4 rotates at high speed to dehydrate the laundry. When shifting from the dewatering process to the washing and rinsing process, the clutch mechanism is switched to release the connection between the dewatering shaft and the washing shaft.
[0090]
In this case, when the coil winding 12 is energized for a short time, the iron core 11 moves downward in the thrust direction, and the iron core 11 is disengaged from the B groove portion 9 of the dewatering shaft 7 and the A groove portion 8 of the washing boss portion 10. Thus, the connection between the dehydrating shaft and the washing shaft is released, and the pulsator 5 is rotated in conjunction with the rotation of the drive motor 16, so that mechanical force is applied to the laundry. In this state, since the position of the iron core can be held by the magnetic path generated by the permanent magnet 22, the energization to the coil winding 12 can be cut off.
[0091]
When shifting from the washing and rinsing process to the dehydrating process, the clutch mechanism is switched to connect the dewatering shaft and the washing shaft. In that case, when a voltage having a reverse polarity to the coil winding 12 is applied to the coil winding 12 for a short time, a magnetic path in a direction to cancel the magnetic path generated by the permanent magnet 22 is generated by the electromagnetic force. The repulsive force 17 moves upward in the thrust direction, and the iron core 11 engages with both the B groove portion 9 of the dewatering shaft 7 and the A groove portion 8 of the washing boss portion 10, thereby connecting the dewatering shaft and the washing shaft. The energization at this time is only required while the magnetic paths cancel each other and the iron core 11 moves upward by the repulsive force of the spring 17.
[0092]
Thus, in the present invention, only when the dehydrating shaft 7 and the washing shaft 6 are connected and released, the coil winding 12 of the solenoid 13 is energized for a short time, and the iron core 11 moves in the thrust direction so that the dewatering shaft 7 and If the operation of connecting or releasing the washing shaft 6 is completed, the position of the iron core 11 can be held by the permanent magnet 22 or the spring 17 even if the current is cut off, so that a clutch mechanism with low power consumption is provided. It can be done.
[0093]
In the present embodiment, an example using a so-called one-coil type DC keep solenoid is shown in which a switching operation is performed by supplying a reverse polarity current to the coil winding 12 of the solenoid 13. Even if it is a method of switching the current by alternately energizing each coil with a direct current type keep solenoid, it is possible to stop energization in a short time if it can hold the position of the iron core by a permanent magnet or spring during the clutch switching operation. Needless to say, it has the same effect.
[0094]
Further, even if the spring 17 is provided on the upper side of the iron core 11 and the permanent magnet 22 is provided on the lower side of the coil winding 12, the holding position of the iron core 11 during dehydration, washing and rinsing is reversed. Needless to say, the target keep solenoid structure has an effect of reducing energization power.
[0095]
Next, a seventh embodiment (embodiment of claim 6) of the fully automatic washing machine of the present invention will be described with reference to FIG.
[0096]
The seventh embodiment relates to energization of the solenoid and control of the drive motor when the clutch mechanism is switched to connect or release the washing shaft and the dewatering shaft, and the clutch mechanism including the solenoid includes: If the structure is the same as that of the clutch mechanism according to any one of the first to fifth embodiments, the effect is exhibited.
[0097]
In these clutch mechanisms, if the engaging portion between the iron core and the dewatering shaft or the washing shaft is well opposed, the movement of the iron core in the thrust direction is smooth, and the connection or release can be switched reliably. The fully automatic washing machine includes a motor control unit (not shown) for rotating the pulsator forward and backward with a drive motor during washing and rinsing.
[0098]
When connecting or releasing the dehydrating shaft and the washing shaft, first, the winding coil is energized as a first step. Then, if the iron core moves and the meshing portion with the dehydrating shaft or the washing shaft does not face well, the iron core stops at the end portion position of the facing shaft. As a second step, a motor control unit (not shown) repeats the drive motor in one direction of forward rotation or one direction of reverse rotation at a low speed for a predetermined time, for example, To seconds. In the meantime, the meshing portion between the iron core and the dewatering shaft or the washing shaft moves and meshes with each other, and the iron core can slide in the thrust direction. As a third step, a motor control unit (not shown) stops the rotation of the drive motor and ends this series of clutch switching operations.
[0099]
As described above, according to the present invention, when the dehydrating shaft and the washing shaft are connected or released, the iron core is thrust while rotating the drive motor at a low speed for a predetermined time in the forward rotation direction, the reverse rotation direction, or both directions. Move in the direction. Provides a clutch mechanism that performs a reliable switching operation because the connection or release operation is performed while adjusting the fitting position of serrations etc. that are sliding engagement parts between the iron core and the B groove part of the dewatering shaft and the A groove part of the washing boss part. can do.
[0100]
Next, an eighth embodiment (another embodiment of claim 6) of the fully automatic washing machine of the present invention will be described with reference to FIG. This ensures that the drive motor is engaged with each other by alternately repeating forward rotation and reverse rotation.
[0101]
First, as a first step, the winding coil is energized. Then, if the iron core moves and the meshing portion with the dehydrating shaft or the washing shaft does not face well, the iron core stops at the end portion position of the facing shaft. As a second step, a motor control unit (not shown) rotates the drive motor in the forward direction at a low speed for a predetermined time, for example, T1 seconds. Then, as a third step, reverse rotation is performed at a low speed for a predetermined time, for example, T2 seconds.
[0102]
The operations of the second step and the third step are performed for a predetermined time, for example, T3 seconds, during which the engagement portion between the iron core and the dewatering shaft or the washing shaft is moved to a position where the mesh is well opposed, and the iron core slides in the thrust direction. Can move. As a fourth step, a motor control unit (not shown) stops the rotation of the drive motor and ends this series of clutch switching operations.
[0103]
As described above, according to the present invention, when the dehydrating shaft and the washing shaft are connected or released, the drive motor is meshed well while repeatedly rotating the drive motor in the normal direction and the reverse direction at a low speed for a predetermined time. Is moved in the thrust direction. Provides a clutch mechanism that performs a reliable switching operation because the connection or release operation is performed while adjusting the fitting position of serrations etc. that are sliding engagement parts between the iron core and the B groove part of the dewatering shaft and the A groove part of the washing boss part. can do.
[0104]
In this embodiment, the drive motor is rotated at a low speed for a predetermined time. However, the motor rotation and stop for a short time are repeated several times, and the rotation and stop in the same direction are repeated. It goes without saying that the same effect can be obtained even by a method of repeating a combination of forward and reverse rotations and stops.
[0105]
Next, a ninth embodiment (embodiment of claim 7) of the fully automatic washing machine of the present invention will be described with reference to FIG. The present invention relates to energization of the solenoid and control of the drive motor when the clutch mechanism is switched to connect or release the washing shaft and the dewatering shaft, and the clutch mechanism including the solenoid is the above-mentioned claim 1. As long as the structure is the same as that of the clutch mechanism of the embodiment according to any one of claims 5 to 5, the effect is exhibited.
[0106]
When the dehydrating shaft and the washing shaft are connected or released by the clutch mechanism, the drive motor is rotated at a low speed for a predetermined time in the forward rotation direction, the reverse rotation direction, or both directions, and the motor rotation speed at that time or the motor After detecting that the connection or release operation has been reliably completed based on the current value, the rotation speed of the dehydration tank detected by the rotation sensor, or the rotation speed of the pulsator detected by the rotation sensor, the next stroke operation is performed. Transition. The fully automatic washing machine includes a motor control unit (not shown) for rotating the pulsator forward and backward with a drive motor during washing and rinsing.
[0107]
First, as a first step, a series of predetermined operations for connecting or releasing the dehydrating shaft and the washing shaft are performed. Then, as a second step, a motor control unit (not shown) performs the drive motor in one direction of forward rotation or one direction of reverse rotation at a low speed for a predetermined time, for example, T4 seconds. The number of motor revolutions during that time is counted. As a third step, a motor control unit (not shown) stops the rotation of the drive motor, and the clutch switching operation for connection or release is performed depending on whether the counted motor rotation speed is within a predetermined rotation speed N1 to N2. Determine whether the is completed successfully.
Since the rotational load torque of the drive motor is different between the case where the dewatering shaft and the washing shaft are connected and the case where the washing shaft is released, by setting the rotational speeds N1 and N2 to appropriate values, The release state can be distinguished.
[0108]
If it is not determined that the connection or release target state has been switched, the process returns to the first step to perform the connection or release operation again. If it is determined that the switch has been switched, connection or release is performed as the fifth step. Determine the completion of the operation and go to the next step.
[0109]
In this embodiment, an example in which the determination of connection or release is made based on the motor rotation speed is shown. However, in the second step, the motor current value during low-speed rotation of the motor, the rotation speed of the pulsator, Even if the number of rotations is detected by a sensor, it can be similarly distinguished.
[0110]
Also, in this embodiment, an example is shown in which the determination is made when the drive motor is rotated at a low speed in the forward direction, but reverse rotation, alternate rotation in the forward and reverse directions, or a combination of rotation and stop is repeatedly performed. It goes without saying that the same effect can be obtained even if it is determined sometimes.
[0111]
As described above, according to the present invention, it is possible to provide a clutch mechanism that shifts to the next stroke operation after detecting that the connection or release operation of the dewatering shaft and the washing shaft has been completed reliably.
[0112]
Next, a tenth embodiment (embodiment of claim 8) of a fully automatic washing machine of the present invention will be described with reference to FIGS. In the embodiment of FIG. 12, the entire configuration of the fully automatic washing machine is the same as that of FIG. 1, and thus the same parts are denoted by the same reference numerals and description thereof is omitted.
[0113]
The drive motor 16 is composed of a stator 14 and a rotor 15, and a solenoid 13 is provided so as to be located in a central recess of the rotor 15. A washing boss portion 10 that rotates in conjunction with the washing shaft 6 passes through the outer circumference of the shaft 6, and the inner circumference of the iron core 11 slides with an A groove portion 8 provided in the longitudinal direction on the outer circumference of the washing boss portion 10. A spring 17 and a spring retainer 21 that are slidably fitted to the B groove portion 9 provided in the longitudinal direction on the outer periphery of the dehydrating shaft 7 and that return the iron core 11 are provided.
[0114]
The outer peripheral surface of the washing shaft 6 and the inner peripheral surface of the washing boss portion 10 are fitted by serrations provided in the longitudinal direction and rotate in conjunction with each other. The iron core 11 slides in the thrust direction on the inner peripheral surface thereof by serration coupling or the like with the outer periphery of the dewatering shaft 7 and the outer periphery of the washing boss portion 10. A temperature detector 25 for detecting the temperature of the coil winding 12 of the solenoid 13 is provided.
[0115]
The operation in the above configuration will be described with reference to FIG.
[0116]
When shifting to washing and rinsing, energization of the coil winding 12 of the solenoid 13 is started as the first step of the coupling / disengaging operation of the clutch mechanism. As a second step, a motor control unit (not shown) performs a series of connecting / disconnecting operations such as repeating the driving motor 16 in the forward direction, in the reverse direction, or bi-directionally at a low speed for a predetermined time or in combination with a stopped state. To do.
[0117]
During this time, the temperature detector 25 monitors the temperature of the coil winding 12. If the coil winding 12 has an abnormal temperature rise due to an abnormal condition such as an electrical failure or the like where dust is caught in the sliding portion between the iron core 11 and the A groove portion 8 or the B groove portion 9, the temperature detector 25 , And a washing machine control unit (not shown) made of a microcomputer or the like makes an abnormality determination to cut off the energization of the coil winding 12. Then, abnormality notification by a buzzer or the like, or abnormality display by an LED lamp or the like is performed.
[0118]
In this embodiment, an example of detecting an overheating abnormality and displaying an abnormality notification and an abnormality display is shown, but if the automatic washing course operation is in progress, a part of the remaining process is not performed or all of the process is performed. It is also a very effective treatment method to stop the operation halfway and notify the user of an abnormal operation of the clutch mechanism as soon as possible.
[0119]
As described above, according to the present invention, it is possible to prevent accidents such as burnout due to overheating of the coil winding of the solenoid, and to inform the user of an abnormal operation of the clutch mechanism, and to promote early repair and recovery. A highly reliable clutch mechanism can be provided.
[0120]
【The invention's effect】
Of the present invention all Since the automatic washing machine is configured as described above, the invention according to claim 1 has good assembly and repairability. It is possible to reliably maintain the state according to the operation process of the fully automatic washing machine. A clutch mechanism can be provided.
[0121]
In the invention according to claim 2, the structure of the meshing portion is compact, It is possible to maintain a reliable state according to the operation process of the fully automatic washing machine. And the clutch mechanism which can restrain the height of a fully automatic washing machine main body low can be provided by devising the attachment position structure.
[0122]
The invention described in claim 3 provides a clutch mechanism that can arbitrarily and reliably disconnect the washing shaft and the dewatering shaft and can reliably maintain the state in accordance with the operation stroke of the fully automatic washing machine. Can do.
[0123]
Furthermore, the invention according to claim 4 can provide a clutch mechanism that can arbitrarily disconnect the washing shaft and the dewatering shaft with less power consumption.
[0124]
Furthermore, the invention according to claim 5 can provide a clutch mechanism that can electrically disconnect the washing shaft and the dewatering shaft arbitrarily with less power consumption.
[0125]
Furthermore, the invention according to claim 6 can provide a clutch mechanism that can arbitrarily disconnect the washing shaft and the dewatering shaft and can reliably perform the switching operation of connection or release.
[0126]
Further, the invention according to claim 7 can provide a clutch mechanism that can arbitrarily disconnect the washing shaft and the dewatering shaft and can reliably perform the switching operation of connection or release.
[0127]
The invention according to claim 8 can provide a highly safe clutch mechanism that can arbitrarily disconnect the washing shaft and the dewatering shaft and detect abnormal operation.
[Brief description of the drawings]
FIG. 1 is a schematic cross-sectional configuration diagram showing a first embodiment of a fully automatic washing machine of the present invention.
FIG. 2 is an enlarged schematic cross-sectional configuration view of a main part showing a first embodiment of a fully automatic washing machine of the present invention.
FIG. 3 is an enlarged schematic cross-sectional configuration view of a main part showing a second embodiment of a fully automatic washing machine of the present invention.
FIG. 4 is an enlarged schematic cross-sectional configuration view of a main part showing a third embodiment of a fully automatic washing machine of the present invention.
FIG. 5 is an enlarged schematic cross-sectional configuration view of a main part showing a fourth embodiment of a fully automatic washing machine of the present invention.
FIG. 6 is a schematic circuit diagram showing a fifth embodiment of the fully automatic washing machine of the present invention.
FIG. 7 is an enlarged schematic cross-sectional configuration view showing a main part of a sixth embodiment of the fully automatic washing machine of the present invention.
FIG. 8 is a flowchart showing a step operation of the seventh embodiment of the fully automatic washing machine of the present invention.
FIG. 9 is a flowchart showing step operations of the eighth embodiment of the fully automatic washing machine of the present invention.
FIG. 10 is a flowchart showing the step operation of the ninth embodiment of the fully automatic washing machine of the present invention.
FIG. 11 is a flowchart showing a step operation of the tenth embodiment of the fully automatic washing machine of the present invention.
FIG. 12 is an enlarged schematic cross-sectional configuration view showing a principal part of a tenth embodiment of a fully automatic washing machine according to the present invention.
FIG. 13 is an enlarged schematic cross-sectional view of a main part showing an embodiment of a conventional fully automatic washing machine.
FIG. 14 is an enlarged schematic cross-sectional view of a main part showing another embodiment of a conventional fully automatic washing machine.
[Explanation of symbols]
1 Washing machine body
2 Suspension
3 outside water tank
4 Dehydration tank
5 Pulsator
6 Washing shaft
7 Dehydration shaft
8 A groove
9 B groove
10 Washing boss
11 Iron core
12 Coil winding
13 Solenoid
14 Stator
15 rotor
16 Drive motor
17 Spring
18 Bearing
19 Bearing
20 Drain valve
21 Spring retainer
22 Permanent magnet
23 Power supply circuit
24 Relay contact
25 Temperature detector

Claims (8)

A main body, an outer water tank supported by a suspension in the main body, a hollow dewatering shaft supported by a bearing having a bearing attached to the bottom surface of the outer water tank at a predetermined interval, and a dewatering tank fixed to the dewatering shaft A washing shaft supported by a bearing in the dewatering shaft and having a pulsator attached in the dewatering tank; a drive motor attached to the lower portion of the bearing in conjunction with the washing shaft; and between the bearing and the drive motor An electromagnetic solenoid is provided in the electromagnetic solenoid, and the iron core of the electromagnetic solenoid has a hollow cylindrical shape, and a washing boss portion that rotates in conjunction with the washing shaft passes through the inside of the dewatering shaft, the washing shaft, and the washing shaft. The inner circumference is slidably fitted with a groove provided in the longitudinal direction on the outer circumference of the washing boss, and is slidably fitted with a groove provided in the longitudinal direction on the outer circumference of the dewatering shaft. Further comprising a spring for returning the iron heart,
At the time of washing and rinsing, the electromagnetic solenoid is energized, and the electromagnetic force causes the iron core to move down in the thrust direction against the repulsive force of the spring, and the engagement between the iron core and the groove portion of the dewatering shaft is released. The iron core is engaged only with the groove portion of the washing boss portion, thereby releasing the connection between the dewatering shaft and the washing shaft,
At the time of dehydration, the electromagnetic solenoid is in a non-energized state, the iron core is moved upward in the thrust direction by the repulsive force of the spring, and the iron core is engaged with both the groove portion of the dewatering shaft and the groove portion of the washing boss portion. A fully automatic washing machine having a clutch mechanism for connecting the dewatering shaft and the washing shaft. A main body, an outer water tank supported by a suspension in the main body, a hollow dewatering shaft supported by a bearing having a bearing attached to the bottom surface of the outer water tank at a predetermined interval, and a dewatering tank fixed to the dewatering shaft A washing shaft supported by a bearing in the dewatering shaft and having a pulsator attached in the dewatering tank; a drive motor attached to the lower portion of the bearing in conjunction with the washing shaft; and the drive motor at the lower portion of the bearing An electromagnetic solenoid is provided so as to be positioned in a central recess of the electromagnetic solenoid, and the iron core of the electromagnetic solenoid has a hollow cylindrical shape, and a washing boss portion that rotates in conjunction with the washing shaft on the outer periphery of the dehydrating shaft, the washing shaft, and the washing shaft. The inner circumference of the iron core is slidably fitted with a groove provided in the longitudinal direction on the outer circumference of the washing boss, and provided in the longitudinal direction on the outer circumference of the dewatering shaft. The grooves slidably fitted, a spring for returning the further iron heart,
At the time of washing and rinsing, the electromagnetic solenoid is energized, and the electromagnetic force causes the iron core to move down in the thrust direction against the repulsive force of the spring, and the engagement between the iron core and the groove portion of the dewatering shaft is released. The iron core is engaged only with the groove portion of the washing boss portion, thereby releasing the connection between the dewatering shaft and the washing shaft,
At the time of dehydration, the electromagnetic solenoid is in a non-energized state, the iron core is moved upward in the thrust direction by the repulsive force of the spring, and the iron core is engaged with both the groove portion of the dewatering shaft and the groove portion of the washing boss portion. A fully automatic washing machine having a clutch mechanism for connecting the dewatering shaft and the washing shaft.   The washing shaft is made of a non-magnetic material, the dehydrating shaft is made of a magnetic material, the spring is located below the iron core and above the spring holding portion, and the inner circumference of the iron core is extended with the spring extended. The dewatering shaft meshes with the groove portion, thereby connecting the dewatering shaft and the washing shaft, and the inner periphery of the iron core is not meshed with the groove portion of the dewatering shaft in a state where the spring is compressed. 3. A fully automatic washing machine according to claim 1, further comprising a clutch mechanism configured not to connect the two.   4. The structure according to claim 1, wherein the electromagnetic solenoid of the clutch mechanism is energized and then the applied power to the electromagnetic solenoid is decreased to maintain the operating state. Fully automatic washing machine. The electromagnetic solenoid is a so-called keep solenoid having a built-in permanent magnet. The electromagnetic solenoid is energized for a short time only when the dehydrating shaft and the washing shaft are released , and the iron core moves in the thrust direction so that the dehydrating shaft and the washing shaft are moved. after the completion of the operation of releasing the claim 1, characterized in that a clutch mechanism configured to be held magnetic forces therefore the position of the iron core of the permanent magnet be deenergized to the electromagnetic solenoid Or the fully automatic washing machine of Claim 2 or Claim 3. When energizing the coil winding of the solenoid to release the dewatering shaft and the washing shaft, the drive motor is moved in the forward direction, reverse direction, or both directions for a predetermined time while moving the iron core in the thrust direction. The fully automatic washing machine according to any one of claims 1 to 5, wherein the dehydrating shaft and the washing shaft are released by rotating at a low speed.   When the dehydrating shaft and the washing shaft are connected or released by the clutch mechanism, the drive motor is rotated at a low speed for a predetermined time in the forward rotation direction, the reverse rotation direction, or both directions, and the motor rotation speed or motor current at that time is rotated. 7. The method according to claim 1, further comprising detecting the completion of the connection or release operation based on the value, the number of revolutions of the dewatering tank, or the number of revolutions of the pulsator, and then shifting to the next stroke operation. The fully automatic washing machine as described in any one. A temperature detector for detecting the coil winding temperature of the electromagnetic solenoid is provided, and from the detection temperature of the temperature detector when the coil winding is energized to release the dewatering shaft and the washing shaft, the clutch mechanism Judgment of abnormal operation is made to cut off or wash the energization of the coil windings, to avoid any or all of the rinsing process and dehydration process, or to cut off the power supply to the drive motor The fully automatic washing machine according to any one of claims 1 to 7, wherein notification is performed.

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