JP3907159B2 - Washing machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a washing machine and a washing / drying machine.
[0002]
[Prior art]
In general washing machines, a washing and dewatering tub (washing tub) is installed in an outer tub for storing washing water, and a stirring blade is further installed in the washing tub. The laundry is agitated and washed (washing and rinsing), and the laundry is centrifugally dehydrated by rotating the washing tub. The laundry dryer is further configured to dry the laundry in the washing tub by cooling and dehumidifying the hot air while circulating the hot air in the centrifugally dehydrated washing tub.
[0003]
[Problems to be solved by the invention]
In such a washing machine and a washing / drying machine, basically, improvement of washing efficiency and improvement of drying efficiency are problems, and in order to solve these problems, the tangling of the laundry in the washing process is reduced. It is necessary to.
[0004]
  One object of the present invention is to allow laundry to increase the washing efficiency by efficiently applying a mechanical washing force to the laundry.MachineIt is to propose.
[0005]
  Of the present inventioneven moreMy goal is,A washing machine suitable for realizing the washing described aboveIs to propose.Specifically, a washing machine suitable for realizing the washing as described above is a washing machine configured to perform driving switching by rotating the washing / dehydrating tub and the stirring blade by applying a driving force in the opposite rotational direction. The present invention is to propose a clutch mechanism that is suitable for accurately realizing such drive switching.
[0008]
[Means for Solving the Problems]
  The present invention includes a washing / dehydrating tub installed in an outer tub for storing washing water, a stirring blade installed in the washing / dehydrating tub, a driving device for rotationally driving the washing / dehydrating tub and the stirring wing, A control device for controlling the drive device, the drive device comprising an electric motor, a planetary gear reduction mechanism, and a clutch mechanism, and the planetary gear reduction mechanism includes a sun gear that rotates integrally with a rotor of the electric motor; Supporting an internal gear that rotates integrally with an outer output shaft system that transmits rotation to the washing and dewatering tub, and a planetary gear meshed between the sun gear and the internal gear, and providing a rotational force to the stirring blade. A center output shaft for transmission and a carrier that rotates integrally with the clutch, and the clutch mechanism is arranged outside the planetary gear reduction mechanism.EnterTo selectively mesh and engage the force shaft system with the rotor or stationary member of the motorAxial along the outer input shaft systemIn a washing machine with a moving slider,
  The clutch mechanism isA spring that urges the slider in a direction to engage and engage with the rotor; a cam that decelerates and rotates the synchronous motor; and an operator that reciprocates linearly in contact with the cam. An electric operating machine, and an operating lever that is driven to swing by the operating element and moves the slider against the force of the spring;In the washing process, the slider is positioned between the rotor and the stationary member, and the planetary gear reduction mechanism applies a driving force in the opposite rotation direction to the washing / dehydrating tub and the stirring blade to rotate them. It is characterized by having made it perform.
[0009]
  Also,The clutch mechanism is located in the housing of the electric motor, the operation lever passes through an operation window formed in the housing and is led out of the housing, and the electric operating machine is mounted on the center base together with the drive device. installedIt is characterized by that.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings. The present invention is a washing machine that performs washing and dehydration or a washing and drying machine that performs washing, dehydration, and drying. However, the washing machine can be implemented with a configuration in which a drying mechanism is omitted from the washing and drying machine. Next, an embodiment in the washing and drying machine will be described.
[0017]
A washing and drying machine according to an embodiment described below includes a washing and dehydrating tub (washing tub) installed in an outer tub for storing washing water, a stirring blade installed in the washing tub, the washing tub and the stirring wing. And a drying mechanism that cools and dehumidifies the hot air while circulating the hot air in the washing tub. The driving device includes an electric motor, a clutch mechanism, and a planetary gear speed reduction mechanism. In the washing process, basically, the washing tub and the stirring blade are applied with a driving force in the opposite rotational direction to rotate the washing tub and the stirring blade. Washing is performed by efficiently applying mechanical washing power to the object.
[0018]
FIG. 1 is a schematic diagram showing an embodiment of a washing / drying machine according to the present invention.
The washer / dryer in this embodiment supports a bottomed cylindrical outer tub 2 suspended from a square cylindrical outer frame 1 by a vibration isolating mechanism (not shown). Is provided with a bottomed cylindrical washing / dehydrating tub (washing tub) 3 having a number of dewatering holes 3a formed in the side wall and a stirring blade 4, and a washing tub by a rotary drive device 5 installed on the lower side of the outer tub 2 3 and the stirring blade 4 are rotated forward and reverse repeatedly, or they are integrally rotated in one direction. The dewatering hole 3a is provided in the lower region of the side wall of the washing tub 3 in order to prevent the blow-off of circulating air to be described later and increase the drying efficiency of the laundry, and the middle region and the upper region may be omitted or reduced. The stirring blade 4 is provided with a vent hole 4a. The bottom of the outer tub 2 is connected to a drain pipe 7 through a drain solenoid valve 6.
[0019]
The upper opening 1a of the outer frame 1 is opened and closed by an outer lid 8 attached to the outer frame 1 by a hinge 8a, and the upper opening 2a of the outer tank 2 is opened and closed by an inner lid 9 attached to the outer tank 2 by a hinge 9a.
[0020]
Then, the washing and drying machine opens the outer lid 8 and the inner lid 9 to put the laundry into the washing tub 3, closes the inner lid 9 and the outer lid 8, and closes the water supply solenoid valve (shown in the figure) into the outer tub 2. (Omitted) by supplying the water and operating the rotary drive device 5 by rotating the washing tub 3 and the stirring blade 4 in the opposite direction repeatedly in the forward and reverse directions, the laundry is stirred and washed, and the drain electromagnetic valve 6 is opened. It drains and spin-dry | dehydrates by rotating the washing tub 3 in one direction at high speed.
[0021]
A circulation air passage for generating circulating air for circulating the air in the outer tub 2 is connected to the suction port 2b provided at the lower portion of the side wall of the outer tub 2 and the suction port 2b and is directed upward from the suction port 2b. The rising air passage portion (member) 10 for damming the washing water that has extended and entered, and the circulating air that has been installed at a position higher than the water level of the outer tub 2 in the washing process and has risen up the upward air passage portion 10 are folded back. The upper folded portion (member) 11, the descending air passage portion (member) 12 extending from the upper folded portion 11 toward the lower side of the outer tub 2, and the descending wind disposed in the lower space of the outer tub 2. A circulation fan 13 that sucks in circulation air from the passage portion 12, a blowing air passage portion (member) 14 that extends from the discharge port of the circulation fan 13 toward the upper opening of the outer tub 2, and an upper portion of the blowing air passage portion 14 Connected circulating air Blowing opening blowing the washing tub 3 from the upper opening 2a of the tank 2 comprises a (member) 15. The ascending air passage portion 10 in the circulation air passage functions to stop the washing water in the outer tub 2 from entering the circulation fan 13 in the washing process. Further, the circulation fan 13 and the connection portion of the air passage member to the circulation fan 13 constitute a lower folded portion in the circulation air passage.
[0022]
The circulation air passage includes a cooling water spray portion 16 in the upper portion of the rising air passage portion 10, a lint filter 17 in the upper folded portion 11, and a heater (PTC heater) 18 in the blowing port portion 15. To be included.
[0023]
These circulation air path members are mounted on the rear side of the outer tub 2 so as to be attached to the side walls of the outer tub 2.
[0024]
And these circulation air path members opened the drainage electromagnetic valve 6 after washing, drained the washing water in the outer tub 2, and rotated the washing tub 3 at high speed and dehydrated it, and then rotated it at low speed (50 to 200 rpm). By operating the circulation fan 13 in this state, the air in the outer tub 2 and the washing tub 3 is sucked out from the suction port 2b and is cooled by opening the cooling water spraying electromagnetic valve 16a in the process of rising in the rising air passage portion 10. The water is cooled and dehumidified by the cooling water supplied from the water sprinkling part 16 into the rising air passage part 10, and the yarn waste is collected by the thread waste filter 17 in the upper folded part 11. The cooling water supplied into the ascending air passage unit 10 cools the inner wall surface and the circulating air while flowing down the inner wall surface along the inner wall surface in the ascending air passage unit 10 and flows into the outer tub 2. After that, the water is discharged through the drain electromagnetic valve 6. Thereafter, the cooled and dehumidified air is sucked into the circulation fan 13 through the descending air passage portion 12, is sent from the circulation fan 13 through the blowing air passage portion 14 to the blowing port portion 15, and is heated by the heater 18 to be heated in the washing tub 3. It blows in the direction opposite to the rotation direction of the washing tub 3 toward the inner wall surface. The laundry in the washing tub 3 is dried by touching such circulating air.
[0025]
FIG. 2 is a block diagram of a control system for executing control of such washing, centrifugal dehydration, and drying processes.
[0026]
The control unit 21 is configured around a microcomputer 21a, and supplies power to the power supply circuit 21b, the rotation drive device 5, the water supply electromagnetic valve 22, the drainage electromagnetic valve 6, the circulation fan 13, the heater 18, and the cooling water spraying electromagnetic valve 16a. And a drive circuit 21c having a group of semiconductor alternating current switching elements (FLS) for controlling.
[0027]
The rotation drive device 5 includes a reversible rotation type drive motor 51 and an electrically operated clutch mechanism 52. The drive motor 51 has a stator winding 51a and a rotation sensor 51b, and the electric operation clutch mechanism 52 has an electric operation machine 52a and a position sensor 52b that detects an operating position.
[0028]
The drive circuit 21c is configured to provide two semiconductor AC switching elements (FLS) 21c for forward / reverse rotation control with respect to power supply control to the stator winding 51a of the drive motor 51 in the rotary drive device 5.₁, 21c₂Is provided. FLS21c₁Is a semiconductor switching element for forward rotation feeding control, FLS21c₂Is a semiconductor AC switching element for reverse rotation power feeding control. Further, the FLS 21c for controlling the power supply to the electric operating machine 52a of the electric operating clutch mechanism 52 in the rotary drive device 5._ThreeIs provided.
[0029]
The drive circuit 21c also controls the power supply to the water supply solenoid valve 22, the drainage solenoid valve 6, the circulation fan 13, the heater 18, and the cooling water spray solenoid valve 16a._Four~ 21c₈Is provided. The drive circuit 21c is connected to the FLS 21c in accordance with instructions from the microcomputer 21a.₁~ FLS21c₈The power supply control to the subordinate load is performed by controlling the conduction state of the power supply.
[0030]
The microcomputer 21a is further connected in advance to the rotation sensor 51b of the drive motor 51, the position sensor 52b of the electric operation clutch mechanism 52, the water level sensor 23 for detecting the washing water level in the outer tub 2, and the operation panel 24. By executing the control processing program, signals from the input switch group 24a, the water level sensor 23, the rotation sensor 51b, and the position sensor 52b of the operation panel 24 are taken in, and the drive circuit 21c is controlled to perform washing, dehydration and hot air drying. Control of each process is executed, and the display element group 24b of the operation panel 24 is controlled to display the progress.
[0031]
In the washing process, first, as the detection mode, the amount of cloth and the quality of the laundry are detected. The cloth amount is detected when the drive motor 51 is operated in the dry cloth state, the electric operation clutch mechanism 52 is controlled to rotate the stirring blade 4 while the washing tub 3 is stationary, and the drive motor 51 is stopped. The inertial rotation speed reduction characteristic is detected with reference to the signal of the rotation sensor 51b, and is detected based on the speed reduction characteristic at this time. In addition, the cloth quality is detected by supplying water to the outer tub 2 at a predetermined water level, and similarly, when the drive motor 51 is operated to rotate the stirring blade 4 and the drive motor 51 is stopped, the speed of inertial rotation is reduced. The operation of detecting the characteristic with reference to the signal of the rotation sensor 51b is executed a plurality of times while changing the water level, and is detected based on the difference in the speed reduction characteristic at this time.
[0032]
Next, as the washing mode, the electric motor 21 is operated in a state where the washing water is accumulated in the outer tub 2, and the electric operation clutch mechanism 52 is configured so as to repeatedly forward and reverse the washing tub 3 and the stirring blade 4 in the opposite directions. The laundry is agitated and washed by controlling the drainage, and the drainage electromagnetic valve 6 is opened for draining.
[0033]
In the dehydration process, as a dehydration mode, the laundry is centrifugally dehydrated by controlling the drive motor 21 and the electric operation clutch mechanism 52 so as to rotate the washing tub 3 and the stirring blade 4 integrally in one direction at high speed.
[0034]
In the drying process, the outer tub is operated by controlling the drive motor 51 and the electric operation clutch mechanism 52 so that the washing tub 3 and the stirring blade 4 are rotated slowly and integrally in one direction, and the circulation fan 13 is operated. Circulating air is circulated to circulate the air in 2, and air heated by operating the heater 18 is blown into the washing tub 3, and the cooling water spraying electromagnetic valve 16 a is opened to spray water from the cooling water spraying portion 16 into the air passage 10. Thus, control is performed to cool and dehumidify the humid air sucked from the outer tub 2.
[0035]
FIG. 3 is a longitudinal side view showing a specific configuration of the above-described washing and drying machine. Description overlapping with that in FIG. 1 is omitted.
[0036]
The rotation drive device 5 includes a reversible rotation type drive motor 51, an electrically operated clutch mechanism 52, a planetary gear speed reduction mechanism 53, a center output shaft 54, and an outer output shaft 55, and is integrally formed on the lower surface of a center base 56 made of steel plate. The center base 56 is attached to the bottom lower surface of the outer tub 2 by screwing. Then, the rotational force of the drive motor 51 is applied to the stirring blade 4 via the planetary gear speed reduction mechanism 53 and the center output shaft 54 in a state where the washing force is applied to the washing tub 3 by setting the electric operation clutch mechanism 52 to the detection mode. By transmitting and rotating the stirring blade 4 forward and reverse, the cloth amount detection and the cloth quality detection based on the load amount acting on the stirring blade 4 are executed, and the electric operation clutch mechanism 52 is set to the washing mode to drive the motor. The rotational force of 51 is transmitted to the outer tub 2 and the agitating blade 4 in the opposite directions via the planetary gear speed reduction mechanism 53, the center output shaft 54 and the outer output shaft 55, and these are rotated forward and reverse in the opposite directions to execute washing. The rotational force of the drive motor 51 is agitated with the outer tub 2 via the planetary gear reduction mechanism 53, the center output shaft 54 and the outer output shaft 55 by setting the electric operation clutch mechanism 52 to the dehydration mode. The blades 4 same direction transmitted by high speed them in the same direction is a structure for executing the centrifugal dehydration.
[0037]
4 to 6 are longitudinal side views showing in detail the internal configuration of the rotary drive device 5. FIG. 4 shows a state where the electric operation clutch mechanism 52 is in a detection mode. FIG. 5 shows an electric operation clutch. FIG. 6 shows a state where the mechanism 52 is in the washing mode, and FIG. 6 shows a state where the mechanism 52 is in the dewatering mode. FIG. 7 is an enlarged vertical side view showing a portion of the electrically operated clutch mechanism 52 in the rotary drive device 5 shown in FIG.
[0038]
This rotational drive device 5 is concentric with the electric gear clutch mechanism 52 and the drive motor 51 that mesh with the planetary gear speed reduction mechanism 53 in the vertical direction around the drive rotation shafts 54 and 55 of the washing tub 3 and the stirring blade 4. Are attached in series to the center base 56 made of steel plate, which is an attachment strength member.
[0039]
The planetary gear speed reduction mechanism 53 is a drive rotation shaft having a double structure inside and outside by ball bearings 53d and 53e inside a split speed reduction mechanism outer case 53b and 53c that are attached to a center base 56 by a mounting screw 53a together with a coupling flange. The system 53f is supported.
[0040]
The drive rotating shaft system 53f includes a hollow outer output shaft 55 system and a central output shaft 54 system disposed in the hollow.
[0041]
The outer output shaft 55 system is a rotating shaft system that drives the washing tub 3 by directly transmitting the rotation of the drive motor 51 to the washing tub 3, and extends to the outside of the outer case 53 b and penetrates the outer tub 2. The outer output shaft 55 that joins the washing tub 3 to the part, and the serration 53g that engages the slider of the electrically operated clutch mechanism 52 is formed on the outer peripheral surface of the cylindrical part that extends to the outside of the outer case 53c. An outer input shaft portion 53h having a flange formed at the end and a gear case portion 53h that is located in the middle and accommodates the planetary gear reduction mechanism are provided. An annular internal gear 53j that constitutes a part of the planetary gear reduction mechanism is fixed to the inner periphery of the gear case portion 53i.
[0042]
The central output shaft 54 system provided inside the outer output shaft 55 system is a rotating shaft system that decelerates the rotation of the drive motor 51 and transmits it to the stirring blade 4 to drive the stirring blade 4. The agitating blade mounting portion (in which the agitating blade 4 is mounted in a state of being sealed in a watertight and retaining state by metal bearings 57a and 57b and a seal ring (not shown) in the 55 and projecting into the washing tub 3 from the tip of the outer output shaft 55) The center output shaft 54 is formed on the inner end portion that is projected from the inner end into the gear case portion 53i and is coupled to the planetary gear speed reduction mechanism, and the inner side of the outer input shaft portion 53h. An electric motor rotor fitting portion 53n and a set screw portion 53p are formed on the outer end portion supported by the ball bearings 53k and 53m and extending in a cantilevered state from the outer end of the outer input shaft portion 53h. An inner input shaft portion 53r having a sun gear 53q formed on the inner end side portion extending into the gear case portion 53i, and a carrier fitted to the serration of the inner end portion of the center output shaft 54 in the gear case portion 53i. A planetary gear 53t that is pivotally supported by 53s and meshes with the gears 53j and 53q and rotates to transmit the reduced rotational force to the carrier 53s is provided.
[0043]
In the drive motor 51, an insulating member 51c is interposed on the lower end surface of the outer case 53c, and an electric motor housing 51d attached in an insulated state by an attachment screw (not shown) is opened downward, and a stator 51e is inserted from the open end. It is the structure fixed so that it might be pinched | interposed by several cutting protrusion and a bending nail | claw. Specifically, the stator 51e is configured such that a stator winding 51a having a 6-pole configuration is wound around the stator core 51f so as to constitute a reversible rotation induction motor, and the outer peripheral surface of the stator core 51f is disposed on the motor housing 51d. Then, the motor housing 51d is attached to the lower end surface of the outer case 53c. The rotor 51h assembled to the stator 51e is fitted to a rotor fitting portion 53n formed on the inner input shaft 53r, and is fastened and fixed by a set nut 51i screwed to the set screw portion 53p. Then, the lower opening of the motor housing 51d is fitted and covered with the motor cover 51j.
[0044]
The rotor 51h is a rotor core in which an outer iron core 51k and an inner iron core 51m are stacked concentrically, and a saddle type secondary conductor 51n and a cooling blade 51p are integrally formed on the outer iron core 51k by aluminum die casting. Insulating resin is injected into the gap between the iron core 51k and the inner iron core 51m to form an insulating resin layer 51q that couples them together. The insulating resin layer 51q extends to the upper end surface of the rotor 51h, and forms a meshing uneven portion 51r that engages and disengages a slider of an electric operation clutch mechanism 52 described later on the end surface.
[0045]
As shown in detail in FIGS. 7 to 12, the electric operation clutch mechanism 52 is engaged with the rotor 51 h of the drive motor 51 by meshing engagement and coupled to the outer output shaft 55 system with the rotor 51 h. The outer output shaft 55 is freed by releasing the meshing engagement with the rotor 51h, or is engaged with the stationary member to prevent the outer output shaft 55 from rotating. The slider 52d which functions is provided.
[0046]
The electric operation clutch mechanism 52 has an annular steel plate base 52c, which is a stationary member and a strength member, placed inside the electric motor housing 51d in order to reduce the overall axial dimension of the rotary drive device 5. The speed reducing mechanism outer case 53c is fastened together with a mounting screw and is installed so as to surround the outer input shaft portion 53h in the inner space surrounded by the end coil of the stator winding 51a.
[0047]
An insulating resin (PPS) slider 52d slidably engaged with a serration 53g formed on the outer peripheral surface of the outer input shaft portion 53h in the axial direction is engaged with the rotor 51h by a coil spring 52e. A pressing force is applied so as to engage with the concavo-convex portion 51r, and the slider 52d is pulled up against the pressing force of the coil spring 52e by the operating lever 52f attached to the steel plate base 52c, thereby engaging with the rotor 51h. The outer input shaft portion 53h is released to be in a free state and engaged with the steel plate base 52c to stop the rotation.
[0048]
As shown in FIG. 8, the slider 52d is provided with a serration 52g that meshes with the serration 53g of the outer peripheral surface of the outer input shaft portion 53h on the inner peripheral surface, and is engaged with the engaging uneven portion 51r of the rotor 51h at the lower end edge. An engagement protrusion 52h is provided, a flange 52i that abuts the operation lever 52f is protruded on the outer peripheral surface, and an engagement protrusion 52k that engages with an engagement protrusion 52j formed on the steel sheet base 52c is formed. It is the form which resin-molded so that 52 m of engaging members may be integrally provided.
[0049]
As shown in FIG. 9, the steel plate base 52c has a configuration in which the locking projections 52j are formed in an annular shape, and the outer peripheral edge is cut and raised to raise the operation lever mounting arm 52n.
[0050]
As shown in FIG. 10, the operation lever 52f is a steel plate member having a fork formed at the tip, and is formed with an attachment hole 52p for inserting the attachment arm 52n and attached at an intermediate portion, and an electric operating device at the base end. A semicircular contact hole 52q for connecting 52a is formed, and a bifurcated tip end portion is curved so as to bypass both sides of the slider 52d, and is in contact with the flange portion 52i of the slider 52d in a line contact state. This is a form in which a resin (Duracon) -shaped sliding piece 52s provided with a columnar contact portion 52r is placed and screwed and fixed with a mounting screw 52t. Further, on the lower surfaces on both sides of the mounting hole 52p of the operation lever 52f, there are provided recesses 52u for engaging hemispherical protrusions of a stopper (described later).
[0051]
FIG. 11 shows a stopper 52v when the operation lever 52f is attached to the attachment arm 52n. This stopper 52v has a mounting hole 52w for inserting the mounting arm 52n, and a hemispherical projection 52 which is in contact with the operation lever 52f and serves as a fulcrum for smooth movement (turning angle) of the operation lever 52f.
[0052]
The electric operating device 52a is configured to linearly reciprocate the operating element 52y contacting the cam by rotating the cam by decelerating the rotation of a synchronous motor such as a reluctance motor. The operation lever 52f is attached to the base 56 and connected by inserting the operation element 52y into the connection hole 52q of the operation lever 52f to swing the operation lever 52f. The position sensor 52b detects that the operator 52y has reached the lower limit position of the counterclockwise rotation angle for setting the operation lever 52f to the detection mode and the upper limit position of the clockwise rotation angle for setting the dehydration mode. Provide to do. The turning position of the operation lever 52f for setting the washing mode is configured to be detected based on the rotation amount of the synchronous motor.
[0053]
As shown in FIG. 4 to FIG. 7 and FIG. 12, the electric operation clutch mechanism 52 includes a coil spring 52e and an inner ring of a ball bearing 53e on the lower side of a steel plate base 52c attached by being fastened inside the electric motor housing 51d. The slider 52d is positioned so as to be compressed so that the base end of the operation lever 52f passes through the operation window 51s formed in the motor housing 51d and is led out to the outside of the motor housing 51d. In such a posture, the mounting hole 52p of the operating lever 52f is fitted to the operating lever mounting arm 52n of the steel plate base 52c, and the stopper 52v is fitted to the outside thereof, and the tip of the operating lever mounting arm 52n is expanded and removed. The protrusion 52x is in contact with the recess 52u on the lower surface of the operation lever 52f, and is attached to be swingable. As a result, the slider 52d pushed down by the coil spring 52e comes into contact with the contact portion 52r of the sliding piece 52s attached to the operation lever 52f in the linear contact state.
[0054]
The rotary drive device 5 configured as described above controls the electric operating machine 52a of the electric operating clutch mechanism 52 to reciprocate the operating element 52y to swing the operating lever 52f and to input the slider 52d to the outside. Slide along the serration 53g of the shaft portion 53h.
[0055]
In the detection mode, as shown in FIG. 4, the sliding lever 52f is turned counterclockwise to the maximum angle by the electric operating device 52a to raise the slider 52d by compressing the coil spring 52e. The engaging protrusion 52h of the moving element 52d is released from meshing with the rotor 51h, and the engaging protrusion 52k is engaged with the locking protrusion 52j of the steel plate base 52c to prevent rotation, and the outer output shaft 53h and the outer output 55 are A rotation force is applied to the washing tub 3 by stopping the rotation. In this state, the rotation of the rotor 51h of the drive motor 51 is transmitted from the inner input shaft portion 53r to the center output shaft 54 via the sun gear 53q, the planetary gear 53t, and the carrier 53s, thereby rotating the stirring blade 4.
[0056]
Further, in the washing mode, as shown in FIG. 5, the operating lever 52f is turned clockwise from the detection mode state by the electric operating device 52a to lower the slider 52d by the extension force of the coil spring 52e. The engaging projection 52k of the moving element 52d is released from the meshing engagement with the locking projection 52j of the steel plate base 52c, and is stopped at an intermediate position before the engaging projection 52h engages with the meshing uneven portion 51r of the rotor 51h. Set to free rotation. In this rotation free state, the rotation of the rotor 51h of the drive motor 51 is decelerated from the inner input shaft portion 53r via the sun gear 53q, the planetary gear 53t, and the carrier 53r and transmitted to the center output shaft 54, and the stirring blade 4 Rotate. At this time, since the rotation of the planetary gear 53t causes a reaction force to act on the internal gear 53j, the gear case portion 53i to which the internal gear 53j is fixed has a central output shaft together with the slider 52d that is released in a freely rotating state. The washing tub 3 is rotated in the direction opposite to the stirring blade 4 via the outer output shaft 55.
[0057]
The rotation of the drive motor 51 in the washing mode is a forward rotation, a stop (pause), a reverse rotation, a stop (pause), and a forward rotation. Therefore, the washing tub 3 and the stirring blade 4 repeat forward and reverse (reciprocating) rotation in opposite directions in this repetition cycle.
[0058]
In the dehydrating mode, as shown in FIG. 6, the operating lever 52f is further turned clockwise from the washing mode state by the electric operating device 52a to lower the slider 52d by the extension of the coil spring 52e. The engaging protrusion 52h of the slider 52d is engaged with the meshing uneven portion 51r of the rotor 51h. In this state, the rotation of the rotor 51 h of the drive motor 51 is integrally transmitted to the outer input shaft portion 53 h and the inner input shaft portion 53 r, and the washing tub 3 and the agitation are stirred via the center output shaft 54 and the outer output shaft 55. The wing 4 is rotated integrally.
[0059]
The rotation of the drive motor 51 in this dewatering mode is a continuous rotation in one direction, and this rotation is directly transmitted (not decelerated) to the washing tub 3 and the stirring blade 4 so that they are rotated at a high speed. Centrifuge dehydrate.
[0060]
Here, since the sliding piece 52s of the slider 52d and the operating lever 52f is a resin molded part including a sliding part and a meshing engagement part, it is necessary to repair (or replace) the part when worn. . In order to facilitate attachment / detachment of components at this time, the slider 52d and the sliding piece 52s are attached / detached through a space formed inside the stator iron core 51f by removing the rotor 51h of the drive motor 51. Configure to be able to.
[0061]
Therefore, the maximum outer diameter dimension of the slider 52d and the spreading width dimension of the sliding piece 52s are formed smaller than the inner diameter of the stator core 51f.
[0062]
When attaching or detaching parts for repair, the motor cover 51j is removed, the retaining nut 51i is loosened, the rotor 51h is removed from the inner input shaft 53n, the inside of the stator core 51f is opened, and the sliding piece 52s and the slider 52d are opened. Forms a removable work space. Then, the sliding piece 52s is attached / detached by loosening or tightening the attaching screw 52t from below using the attaching / detaching work space. Further, the slider 52d is removed from the outer input shaft portion 53h with the sliding piece 52s removed, and inserted into the outer input shaft portion 53h.
[0063]
Such a washing / drying machine can detect the quantity and quality of the laundry by holding the washing tub 3 in a stationary state and rotating the stirring blade 4 in the detection mode. 3 is allowed to rotate freely, and the stirring blade 4 is rotated via the planetary gear speed reduction mechanism 53 to rotate the washing tub 3 in the opposite direction to the stirring blade 4 so that the mechanical washing force is efficiently applied to the laundry. The washing efficiency can be increased by the action, and in the dewatering (and drying) mode, the washing tub 3 and the stirring blade 4 can be rotated integrally to perform centrifugal dewatering and hot air drying. Accordingly, it is possible to shorten the washing time for applying the mechanical force to the laundry to reduce the fabric entanglement and to improve the drying efficiency.
[0064]
Then, the rotation drive device 5 integrally assembles the drive motor 51, the electric operation clutch mechanism 52, and the planetary gear speed reduction mechanism 53 on the lower surface of a steel plate center base 56, which is a strength member. Since it can be attached by screwing it to the bottom lower surface of the base, high-precision assembly work is facilitated.
[0065]
In particular, the electric operation clutch mechanism 52 is provided with an operation lever 52f swingably attached to an operation lever attachment arm 52n formed by cutting and raising a steel plate base 52c attached together with the electric motor housing 51d inside the electric motor housing 51d. The operation lever 52f of the electric operation device 52a attached to the center base 56 is engaged and connected to the base end portion of the operation lever 52f led out from the operation window 51r of the electric motor housing 51d, and the operation lever 52f is swung. Therefore, the operation lever 52f can be attached with a small number of parts, and the electric operation device 52a and the operation lever 52f are firmly attached on the center base 56 with an accurate relative positional relationship to accurately drive the operation lever 52f ( Rocking).
[0066]
Further, the electric operation clutch mechanism 52 can be repaired or exchanged by removing the rotor 51h of the drive motor 51 to form a work space, and detaching and attaching the slider 52d and the sliding piece 52s, which are wear parts. it can.
[0067]
The drive motor 51 in the embodiment described above is a single-phase capacitor motor, but an inverter motor may be used to control the drive rotation speed in various ways.
[0068]
【The invention's effect】
  Laundry of the present inventionMachineIn addition, it is possible to increase the washing efficiency by efficiently applying a mechanical washing force to the laundry.
[0069]
  Also,The clutch mechanism that switches the drive by applying a driving force in the opposite rotational direction to the washing and dewatering tub and the stirring blade is synchronized with the spring that engages and engages the slider with the rotor. An electric operating device having a cam that rotates and decelerates the rotation of the electric motor, and an operating element that linearly reciprocates in contact with the cam; By adopting a configuration including an operation lever that moves against the force, drive switching can be realized accurately.
[Brief description of the drawings]
FIG. 1 is a schematic view showing an embodiment of a washing / drying machine according to the present invention.
FIG. 2 is a block diagram of a control system for executing control of each process in the washing / drying machine shown in FIG. 1;
3 is a longitudinal side view showing a specific configuration of the washing / drying machine shown in FIG. 1. FIG.
4 is a longitudinal side view showing in detail an internal configuration of the rotary drive device shown in FIG. 3, and shows a state in a detection mode. FIG.
5 is a longitudinal side view showing in detail an internal configuration of the rotary drive device shown in FIG. 3, and shows a state in a washing mode. FIG.
6 is a longitudinal side view showing in detail an internal configuration of the rotary drive device shown in FIG. 3, and shows a state in a dewatering mode. FIG.
7 is an enlarged longitudinal side view showing a portion of an electrically operated clutch mechanism in the rotary drive device shown in FIG. 5. FIG.
FIGS. 8A and 8B show a slider in the rotary drive device shown in FIGS. 4 to 7, wherein FIG. 8A is a top view, FIG. 8B is a longitudinal side view, and FIG. 8C is a bottom view.
9 shows a steel plate base in the rotary drive device shown in FIGS. 4 to 7, wherein (a) is a bottom view and (b) is a longitudinal side view. FIG.
FIGS. 10A and 10B show an operation lever in the rotary drive device shown in FIGS. 4 to 7, wherein FIG. 10A is a bottom view, and FIG. 10B is a longitudinal side view.
FIGS. 11A and 11B show a stopper in the rotary drive device shown in FIGS. 4 to 7, wherein FIG. 11A is a bottom view, and FIG. 11B is a longitudinal side view.
12 is an exploded view of a steel plate base, a slider, an operation lever, and a stopper in the electric operation clutch mechanism of the rotary drive device shown in FIGS. 4 to 7. FIG.
[Explanation of symbols]
2 ... Outer tub, 3 ... Washing and dewatering tub (washing tub), 4 ... Stirring blade, 5 ... Rotation drive device, 6 ... Drainage solenoid valve, 13 ... Circulation fan, 18 ... Heating heater, 51 ... Drive motor, 51d ... Motor housing, 51h ... rotor, 51s ... operation window, 52 ... electric operation clutch mechanism, 52a ... electric operation machine, 52c ... steel plate base, 52d ... slider, 52f ... operation lever, 52n ... operation lever mounting arm, 52s ... sliding piece, 55v ... stopper, 53 ... planet gear reduction mechanism, 56 ... center base.

Claims (2)

A washing / dehydrating tub installed in an outer tub for storing washing water, a stirring blade installed in the washing / dehydrating tub, a driving device for rotationally driving the washing / dehydrating tub and the stirring wing, and controlling the driving device And a control device that
The drive device includes an electric motor, a planetary gear reduction mechanism, and a clutch mechanism,
The planetary gear reduction mechanism includes a sun gear that rotates integrally with a rotor of the electric motor, an internal gear that rotates integrally with an outer output shaft system that transmits rotation to the washing and dewatering tub, and the sun gear. A planetary gear meshed between internal gears, and a carrier that rotates integrally with a central output shaft that transmits rotational force to the stirring blade,
The clutch mechanism, slider to move the outer input shaft system in the axial direction along the outer input shaft system to selectively engages with the rotor or the stationary member of the motor of the planetary gear reduction mechanism In a washing machine equipped with
The clutch mechanism includes a spring that urges the slider in a direction to mesh with and engage with the rotor, a cam that decelerates the rotation of the synchronous motor, and a rotational drive that abuts on the cam to linearly reciprocate. And an operating lever that is oscillated and driven by the operator to move the slider against the force of the spring. In the washing process, the slider is moved to the rotor. The planetary gear reduction mechanism is configured to execute the washing to rotate the planetary gear reduction mechanism by applying a driving force in the opposite rotational direction to the washing / dehydrating tub and the stirring blade. Washing machine.   2. The clutch mechanism according to claim 1, wherein the clutch mechanism is located in a housing of the electric motor, the operation lever extends through an operation window formed in the housing, and is led out of the housing. A washing machine characterized by being installed on the center base together with the device.

Images