JP6282492B2 - Drum washing machine - Google Patents

Description

  The present invention relates to a drum type washing machine. Such a drum-type washing machine may be one that performs continuously from washing to drying, or one that performs washing but does not dry.

  Conventionally, a drum-type washing machine rotates a horizontal axis drum in an outer tub with water stored in the bottom, lifts and drops the laundry by a baffle provided in the drum, and the laundry is moved to the inner periphery of the drum. Laundry is performed by hitting the surface (see Patent Document 1).

JP 2013-240577 A

  As described above, in the configuration in which the laundry is stirred by the baffle, the laundry is unlikely to be entangled or rubbed together. For this reason, the drum-type washing machine tends to have a smaller mechanical force acting on the laundry and lower the washing performance than a fully automatic washing machine that rotates the pulsator in the washing and dewatering tub to wash the laundry.

  This invention is made | formed in view of this subject, and it aims at providing the drum type washing machine which can aim at the improvement of washing | cleaning performance.

  A drum-type washing machine according to a main aspect of the present invention includes an outer tub disposed in a housing, a drum disposed in the outer tub and rotatable about a horizontal axis or an inclined axis inclined with respect to a horizontal direction. A baffle provided on an inner peripheral surface of the drum, a rotating body disposed on the rear portion of the drum so as to rotate coaxially with the drum, and having a protruding portion that contacts laundry on the surface, the drum and the rotation And a drive unit that rotates the body in the same direction so that the rotational speed of the rotating body is faster than the rotational speed of the drum.

  According to said structure, the laundry in a drum is not only struck by the internal peripheral surface of a drum by stirring by a baffle, but is rubbed or stirred by the protrusion part of a rotating rotary body. Therefore, the cleaning performance can be improved as compared with the configuration in which the laundry is merely stirred by the baffle.

  In the drum-type washing machine according to this aspect, the drive unit is disposed behind the outer tub, and a drive motor, and a transmission mechanism unit that transmits torque generated by the drive motor to the rotating body and the drum, It can be set as the structure containing these. In this case, the transmission mechanism section is rotated by the torque of the drive motor and transmits the rotation to the rotating body, a speed reduction mechanism for reducing the rotation of the first rotation shaft, and the speed reduction mechanism. And a second rotation shaft that rotates coaxially with the first rotation shaft at a rotational speed reduced by the rotation and transmits the rotation to the drum.

  According to the above configuration, the drum that requires a larger torque than the rotating body is rotated by decelerating the rotation of the driving motor, so that the torque generated by the driving motor when the drum and the rotating body are driven is reduced. And power consumption of the drive motor can be reduced.

  When it is set as said structure, the said 1st rotating shaft may be set as the structure by which a front-end part is connected with the said rotary body, and a rear-end part is connected with the rotor of the said drive motor. In this case, the speed reduction mechanism includes a sun gear, an annular internal gear that surrounds the sun gear, a plurality of planetary gears that mesh with both the sun gear and the internal gear, and revolve around the sun gear, A planetary gear mechanism having a planetary carrier that rotates with the revolution of the planetary gear, and the sun gear may be provided on the first rotation shaft. Further, the second rotation shaft may include the first rotation shaft, and a front end portion may be connected to the drum and a rear end portion may be connected to the planet carrier.

  With such a configuration, since the rotor and the rotating body of the drive motor are connected by one first rotating shaft, the rotating shaft of the rotor and the rotating shaft of the rotating body are provided and connected to each other. Unlike the configuration, when assembling the drive unit, it is not necessary to align the centers of the two rotation axes. Therefore, the assembly of the drive unit is facilitated. In addition, there is no need to worry about an axial deviation that occurs between the two rotating shafts.

  Furthermore, since the speed reduction mechanism that reduces the rotation of the first rotation shaft and transmits it to the second rotation shaft is configured by the planetary gear mechanism, the gears that configure the speed reduction mechanism are connected to the first rotation shaft and the second rotation shaft. The dimensions of the transmission mechanism portion in the axial direction, that is, the drive portion can be reduced without being aligned in the axial direction. Thereby, since an outer tub and a drum can be enlarged in the front-back direction, washing capacity can be increased.

  In the case of the above configuration, the drive unit may further include a clutch mechanism unit. In this case, the clutch mechanism unit fixes the internal gear so as not to rotate, thereby rotating the first rotation shaft at a rotation speed equal to the rotation speed of the rotor, and rotating the second rotation shaft to the planetary gear. A first mode capable of rotating at a rotational speed reduced by a gear mechanism, and rotating the internal gear together with the rotor, the first rotating shaft, the second rotating shaft, and the planetary gear mechanism. The form of the drive unit is switched between a second form capable of being integrally rotated at a rotational speed equal to the rotational speed of the rotor.

  With such a configuration, in the dehydration step, the drum and the rotating body can be integrally rotated at high speed by switching the form of the drive unit from the first form to the second form. Thereby, the laundry in the drum is not stirred by the rotating body, and the laundry can be dehydrated appropriately.

  When it is set as said structure, the said drive part may be set as the structure which further contains the bearing unit which supports the said 2nd rotating shaft rotatably. Further, the clutch mechanism section surrounds the outer periphery of the internal gear, and is a cylindrical clutch body that is allowed to move in the front-rear direction with respect to the internal gear and is restricted from rotating in the circumferential direction, and the clutch A moving mechanism for moving the body in the front-rear direction, and a front engaging portion and a rear engaging portion of the clutch body are provided with a first engaging portion and a second engaging portion, respectively, and the bearing unit and the The rotor may be configured to be provided with a first engaged portion and a second engaged portion, respectively. In this case, when the clutch body is moved forward by the moving mechanism and the first engagement portion is engaged with the first engaged portion, the rotation of the clutch body in the circumferential direction with respect to the bearing unit is performed. Regulated, the internal gear is fixed so that it cannot rotate. On the other hand, when the clutch body is moved rearward by the moving mechanism portion and the second engaging portion is engaged with the second engaged portion, the rotation of the clutch body in the circumferential direction with respect to the rotor is restricted. Thus, the internal gear can rotate together with the rotor.

  Thus, since the clutch mechanism portion is configured to move the cylindrical clutch body in the front-rear direction on the outer periphery of the internal gear, in the axial direction of the first rotating shaft and the second rotating shaft, The arrangement space can be used as a moving space for the clutch body. Therefore, the dimension of the drive part in the axial direction of a 1st rotating shaft and a 2nd rotating shaft can be made still smaller.

  In the case of the above configuration, the clutch body may be disposed between the bearing unit and the drive motor such that the rear portion of the clutch body is accommodated in the drive motor.

  With such a configuration, the clutch body and the drive motor overlap with each other in the axial direction of the first rotary shaft and the second rotary shaft, so that the size of the drive unit in the axial direction can be further reduced.

  In the case of the above configuration, the moving mechanism portion is further interposed between the clutch body and the planetary gear mechanism, and moves the clutch body rearward by an elastic force, so that the second engaging portion And an elastic member that engages the second engaged portion, and the clutch body is moved forward by pushing the clutch body to engage the first engaging portion with the first engaged portion. In addition, in a state in which the second engaging portion is engaged with the second engaged portion, a pressing member that is separated from the clutch body may be included.

  With this configuration, the clutch body is moved by the elastic force of the elastic member, whereby the second engagement portion engages with the second engaged portion, and the engagement causes the clutch body to move together with the rotor. When rotating, the pressing member is separated from the clutch body. For this reason, the rotation of the rotor and the clutch body is not hindered by the contact of the pressing member with the clutch body.

  ADVANTAGE OF THE INVENTION According to this invention, the drum type washing machine which can aim at the improvement of washing | cleaning performance can be provided.

  The effects and significance of the present invention will become more apparent from the following description of embodiments. However, the following embodiment is merely an example when the present invention is implemented, and the present invention is not limited to what is described in the following embodiment.

It is side surface sectional drawing which shows the structure of the drum type washing machine based on embodiment. It is sectional drawing which shows the structure of the drive unit based on embodiment. It is sectional drawing which shows the structure of the drive unit based on embodiment. It is a front view of the rotor which shows the structure of the rotor of the drive motor based on Embodiment. It is a front view of the clutch plate which shows the structure of the clutch plate of the bearing unit based on Embodiment. It is a figure which shows the structure of the clutch body based on Embodiment, and the figure which shows the state which the guide rib of the clutch body was fitted in the groove part of the outer peripheral surface of an internal gear.

  Hereinafter, a drum type washing machine having no drying function according to an embodiment of the drum type washing machine of the present invention will be described with reference to the drawings.

  FIG. 1 is a side sectional view showing the configuration of the drum type washing machine 1.

  The drum-type washing machine 1 includes a housing 10 that forms an appearance. The front surface 10a of the housing 10 is inclined from the central portion to the upper portion, and the laundry inlet 11 is formed on the inclined surface. The insertion port 11 is covered with a door 12 that can be freely opened and closed.

  The outer tub 20 is elastically supported by a plurality of dampers 21 in the housing 10. A drum 22 is rotatably disposed in the outer tub 20. The outer tub 20 and the drum 22 are inclined with respect to the horizontal direction so that the rear surface side becomes lower. As a result, the drum 22 rotates around the tilt axis tilted with respect to the horizontal direction. The inclination angle of the outer tub 20 and the drum 22 can be about 10 to 20 degrees. The opening 20a on the front surface of the outer tub 20 and the opening 22a on the front surface of the drum 22 are opposed to the charging port 11, and both the charging port 11 is closed by the door 12. A large number of dewatering holes 22 b are formed on the inner peripheral surface of the drum 22. Further, three baffles 23 are provided on the inner peripheral surface of the drum 22 at substantially equal intervals in the circumferential direction.

  A stirring body 24 is rotatably disposed at the rear portion of the drum 22. The stirring body 24 has a substantially disk shape. A plurality of blades 24 a extending radially from the central portion are formed on the surface of the stirring body 24. The stirring body 24 rotates coaxially with the drum 22. The stirrer 24 corresponds to the rotating body of the present invention, and the blade 24a corresponds to the protruding portion of the present invention.

  A drive unit 30 that generates torque for driving the drum 22 and the stirring body 24 is disposed behind the outer tub 20. The drive unit 30 corresponds to the drive unit of the present invention. The drive unit 30 rotates the drum 22 and the stirring body 24 at different rotational speeds in the same direction during the washing process and the rinsing process. Specifically, the drive unit 30 rotates the drum 22 at a rotation speed at which the centrifugal force applied to the laundry in the drum 22 is smaller than gravity, and the stirring member 24 is faster than the rotation speed of the drum 22. Rotate with On the other hand, during the dehydration process, the drive unit 30 integrally rotates the drum 22 and the stirring body 24 at a rotational speed at which the centrifugal force applied to the laundry in the drum 22 is much greater than gravity. The detailed configuration of the drive unit 30 will be described later.

  A drain port 20 b is formed at the bottom of the outer tub 20. A drain valve 40 is provided at the drain port 20b. The drain valve 40 is connected to the drain hose 41. When the drain valve 40 is opened, the water stored in the outer tub 20 is discharged to the outside through the drain hose 41.

  A detergent box 50 is disposed in the upper front portion of the housing 10. In the detergent box 50, a detergent container 50a in which detergent is accommodated is accommodated so that it can be pulled out from the front. The detergent box 50 is connected by a water supply hose 52 to a water supply valve 51 disposed at the upper rear part in the housing 10. The detergent box 50 is connected to the upper part of the outer tub 20 by a water injection pipe 53. When the water supply valve 51 is opened, tap water is supplied from the water tap into the outer tub 20 through the water supply hose 52, the detergent box 50 and the water injection pipe 53. At this time, the detergent accommodated in the detergent container 50 a flows into the water and is supplied into the outer tub 20.

  Next, the configuration of the drive unit 30 will be described in detail.

  2 and 3 are cross-sectional views showing the configuration of the drive unit 30. FIG. FIG. 2 shows a state where the form of the drive unit 30 is switched to the first form, and FIG. 3 shows a state where the form of the drive unit 30 is switched to the second form. FIG. 4 is a front view of the rotor 110 showing the configuration of the rotor 110 of the drive motor 100. FIG. 5 is a front view of the clutch plate 520 showing the configuration of the clutch plate 520 of the bearing unit 500. FIG. 6A and FIG. 6B are a rear view and a front view of the clutch body 610 showing the configuration of the clutch body 610. FIG. 6C is a view showing a state in which the guide rib 615 of the clutch body 610 is fitted in the groove portion 421 on the outer peripheral surface of the internal gear 420.

  The drive unit 30 includes a drive motor 100, a blade shaft 200, a drum shaft 300, a planetary gear mechanism 400, a bearing unit 500, and a clutch mechanism unit 600. The drive motor 100 generates torque for driving the stirrer 24 and the drum 22. The blade shaft 200, the drum shaft 300, and the planetary gear mechanism 400 constitute a transmission mechanism unit TR that transmits the torque generated by the drive motor 100 to the agitator 24 and the drum 22. The blade shaft 200 is rotated by the torque of the drive motor 100 and transmits the rotation to the stirring body 24. The blade axis 200 corresponds to the first rotating shaft of the present invention. The planetary gear mechanism 400 decelerates the rotation of the blade shaft 200 and transmits it to the drum shaft 300. The drum shaft 300 rotates coaxially with the blade shaft 200 at a rotational speed reduced by the planetary gear mechanism 400 and transmits the rotation to the drum 22. The drum shaft 300 corresponds to the second rotating shaft of the present invention. The bearing unit 500 rotatably supports the blade shaft 200 and the drum shaft 300. The clutch mechanism unit 600 is configured to rotate the blade shaft 200 at a rotational speed equal to the rotational speed of the drive motor 100 and to rotate the drum shaft 300 at a rotational speed reduced by the planetary gear mechanism 400. The configuration of the drive unit 30 is switched between the second configuration in which the blade shaft 200, the drum shaft 300, and the planetary gear mechanism 400 can be integrally rotated at the same rotational speed as that of the drive motor 100.

  The drive motor 100 is an outer rotor type DC brushless motor, and includes a rotor 110 and a stator 120. The rotor 110 is formed in a bottomed cylindrical shape, and permanent magnets 111 are arranged on the entire inner circumferential surface thereof. As shown in FIG. 4, an annular clutch plate 112 is provided at the center of the rotor 110. An annular serration 113 is formed on the front surface of the clutch plate 112 toward the front. The serration 113 corresponds to the second engaged portion of the present invention. In FIG. 4, the groove portion of the serration 113 is painted in gray for convenience. The stator 120 has a winding 121 on the outer periphery. When a drive current is supplied to the winding 121 of the stator 120 from a control circuit (not shown), the rotor 110 rotates.

  The drum shaft 300 has a hollow shape. Inside the drum shaft 300, slide bearings 301 and 302 are provided at the front and rear, respectively, and a mechanical seal 303 is provided at the front end.

  The blade shaft 200 is inserted into the drum shaft 300. The outer peripheral surface of the blade shaft 200 slides between the slide bearings 301 and 302. Thereby, the blade shaft 200 rotates smoothly in the drum shaft 300. Further, the mechanical seal 303 prevents water from entering between the drum shaft 300 and the blade shaft 200.

  The planetary gear mechanism 400 includes a sun gear 410, an annular internal gear 420 surrounding the sun gear 410, a plurality of planetary gears 430 that mesh with both the sun gear 410 and the internal gear 420, and revolve around the sun gear 410. The planetary gear 430 is rotatably held, and includes a planet carrier 440 that rotates as the planet gear 430 revolves, and a support plate 450 that supports the rear of the planet carrier 440.

  A sun gear 410 is fixed to a middle part of the blade axis 200. Further, the rear end portion of the drum shaft 300 is fixed to the front center portion of the planet carrier 440. In this manner, the planetary gear mechanism 400 is provided between the blade shaft 200 and the drum shaft 300. Further, the rotor 110 of the drive motor 100 is fixed to the rear end portion of the blade shaft 200.

  When the blade shaft 200 rotates with the rotation of the rotor 110, the sun gear 410 rotates. When the internal gear 420 is in a fixed state, the planetary gear 430 revolves around the sun gear 410 while rotating as the sun gear 410 rotates. As the planetary gear 430 revolves, the planet carrier 440 rotates, and the drum shaft 300 fixed to the planet carrier 440 rotates. Since the revolution speed of the planetary gear 430 is slower than the rotation speed of the sun gear 410, the drum shaft 300 rotates at a lower rotation speed than the blade shaft 200. Thus, since the rotational speed of the blade shaft 200 is reduced and transmitted to the drum shaft 300, the torque transmitted to the drum shaft 300 is larger than the torque transmitted from the drive motor 100 to the blade shaft 200.

  The bearing unit 500 is provided with a cylindrical bearing portion 510 at the center. Inside the bearing 510, rolling bearings 511 and 512 are provided at the front and rear, and a mechanical seal 513 is provided at the front end. The bearing unit 500 is provided with a clutch plate 520 around the bearing portion 510. As shown in FIG. 5, an annular clutch rib 521 is formed on the clutch plate 520. A serration 522 is formed on the outer peripheral surface of the clutch rib 521. The serration 522 corresponds to the first engaged portion of the present invention. Further, the bearing unit 500 is formed with a fixing flange 530 around the bearing portion 510.

  The drum shaft 300 is inserted into the bearing portion 510. An outer peripheral surface of the drum shaft 300 is received by rolling bearings 511 and 512. As a result, the drum shaft 300 rotates smoothly in the bearing portion 510. Further, the mechanical seal 513 prevents water from entering between the bearing portion 510 and the drum shaft 300.

  The clutch mechanism unit 600 includes a clutch body 610, a plurality of clutch springs 620, and a clutch driving device 630. The clutch spring 620 and the clutch driving device 630 constitute a moving mechanism DM that moves the clutch body 610 in the front-rear direction.

  The clutch body 610 has a cylindrical shape. The front surface of the clutch body 610 is all opened, and the central portion of the rear surface is opened. As shown in FIG. 6A, on the rear surface of the clutch body 610, an annular rear serration 612 is formed on the outer peripheral edge of the opening 611 formed in the center toward the rear. The rear serration 612 has a diameter approximately equal to that of the serration 113 of the clutch plate 112 and is formed to mesh with the serration 113. The rear serration 612 corresponds to the second engagement portion of the present invention. In FIG. 6A, for convenience, the groove portion of the rear serration 612 is painted in gray.

  An annular flange portion 613 is formed at the front end portion of the clutch body 610. As shown in FIG. 6B, a front serration 614 is formed on the inner peripheral surface of the flange portion 613 over the entire circumference. The front serration 614 is formed so as to mesh with the serration 522 of the clutch rib 521 of the bearing unit 500. The front serration 614 corresponds to the first engagement portion of the present invention. Furthermore, guide ribs 615 extending in the front-rear direction are formed at a plurality of positions on the inner peripheral surface of the clutch body 610.

  The clutch body 610 is disposed between the bearing unit 500 and the drive motor 100 so as to enclose the planetary gear mechanism 400. The rear part of the clutch body 610 is accommodated in the drive motor 100. That is, the clutch body 610 overlaps with the drive motor 100 in the axial direction of the blade shaft 200 and the drum shaft 300 at the rear portion thereof. As shown in FIG. 6C, groove portions 421 corresponding to the respective guide ribs 615 are formed on the outer peripheral surface of the internal gear 420, and the guide ribs 615 are fitted into the groove portions 421. As a result, the clutch body 610 is allowed to move in the front-rear direction with respect to the internal gear 420 of the planetary gear mechanism 400 and is restricted from rotating in the circumferential direction. The plurality of clutch springs 620 are disposed between the inner side of the rear surface of the clutch body 610 and the support plate 450 of the planetary gear mechanism 400 at substantially equal intervals. The clutch spring 620 corresponds to the elastic member of the present invention.

  The clutch driving device 630 includes a driving machine 631 and a pressing lever 632 extending from the driving machine 631 toward the clutch body 610. The driving machine 631 moves the pressing lever 632 back and forth. The pressing lever 632 corresponds to the pressing member of the present invention.

  The drum type washing machine 1 performs a washing operation of various operation courses. The washing operation includes a washing process, an intermediate dehydration process, a rinsing process, and a final dehydration process.

  In the washing process and the rinsing process, the form of the drive unit 30 is switched to the first form. In the case of switching to the first mode, as shown in FIG. 2, the drive unit 631 moves the pressing lever 632 forward. The pressing lever 632 contacts the flange portion 613 of the clutch body 610 and pushes the flange portion 613 forward. The clutch body 610 moves forward against the elastic force of the clutch spring 620. As a result, the front serration 614 of the clutch body 610 and the serration 522 of the clutch plate 520 are engaged with each other.

  When the front serration 614 engages with the serration 522, the clutch body 610 is restricted from rotating in the circumferential direction with respect to the bearing unit 500, and cannot be rotated. As a result, the internal gear 420 of the planetary gear mechanism 400 is fixed so as not to rotate. In such a state, when the rotor 110 rotates, the blade shaft 200 rotates at a rotation speed equal to the rotation speed of the rotor 110, and the stirring body 24 connected to the blade shaft 200 also rotates at a rotation speed equal to the rotation speed of the rotor 110. Rotate with. As the blade shaft 200 rotates, the sun gear 410 rotates in the planetary gear mechanism 400. As described above, since the internal gear 420 is in a fixed state, the planetary gear 430 rotates around the sun gear 410 while rotating, and the planet carrier 440 rotates accordingly. As a result, the drum shaft 300 connected to the planet carrier 440 rotates. Since the speed is reduced by the planetary gear mechanism 400, the drum shaft 300 rotates at a lower rotational speed than the blade shaft 200, and the drum 22 connected to the drum shaft 300 rotates at a lower rotational speed than the stirring body 24. In other words, the stirrer 24 rotates at a faster rotational speed than the drum 22. The rotational speed of the rotor 110 and the reduction ratio by the planetary gear mechanism 400 are such that the agitator 24 rotates at a rotational speed at which the laundry can be rubbed and stirred to an extent that does not hurt, and the rotational speed of the drum 22 is The centrifugal force acting on the laundry in 22 is appropriately set so that the rotational speed becomes smaller than the gravity.

  In the washing step and the rinsing step, the drive motor 100 alternately rotates clockwise and counterclockwise in a state where water is accumulated in the outer tub 20 up to a predetermined water level that does not reach the lower edge of the inlet 11. As a result, the drum 22 and the stirring body 24 alternately rotate clockwise and counterclockwise while the rotation speed of the stirring body 24 is faster than the rotation speed of the drum 22. The laundry in the drum 22 is beaten against the inner peripheral surface of the drum 22 by being scraped and dropped by the baffle 23. In addition, at the rear part of the drum 22, the laundry comes into contact with the blades 24a of the rotating stirring body 24, and the laundry is rubbed against the blades 24a or the laundry is stirred by the blades 24a. As a result, the laundry is washed or rinsed.

  Next, in the intermediate dehydration process and the final dehydration process, the form of the drive unit 30 is switched to the second form. In the case of switching to the second mode, as shown in FIG. 3, the driving device 631 moves the pressing lever 632 backward. The pressing lever 632 is separated from the clutch body 610, and the clutch body 610 is moved rearward by the elastic force of the clutch spring 620. Thereby, the rear serration 612 of the clutch body 610 and the serration 113 of the clutch plate 112 mesh. Even when the rear serration 612 is engaged with the serration 113, the clutch spring 620 maintains a contracted state, and the clutch body 610 is pressed against the clutch plate 112 by the elastic force of the clutch spring 620. When the rear serration 612 and the serration 113 are engaged with each other, the pressing lever 632 is separated from the clutch body 610.

  When the rear serration 612 engages with the serration 113, the rotation of the clutch body 610 in the circumferential direction with respect to the rotor 110 is restricted, and the clutch body 610 becomes rotatable with the rotor 110. In such a state, when the rotor 110 rotates, the blade shaft 200 and the clutch body 610 rotate at a rotational speed equal to the rotational speed of the rotor 110. At this time, in the planetary gear mechanism 400, the sun gear 410 and the internal gear 420 rotate at the same rotational speed as the rotor 110. As a result, the planet carrier 440 rotates at the same rotational speed as the rotor 110, and the drum shaft 300 connected to the planet carrier 440 rotates at the same rotational speed as the rotor 110. That is, in the drive unit 30, as shown by a one-dot chain line in FIG. 3, the blade shaft 200, the clutch body 610, the planetary gear mechanism 400, and the drum shaft 300 rotate together. Thereby, the drum 22 and the stirring body 24 rotate integrally. The clutch spring 620 interposed between the clutch body 610 and the planetary gear mechanism 400 also rotates together with the clutch body 610 and the planetary gear mechanism 400.

  In the intermediate dewatering process and the final dewatering process, the rotor 110, that is, the drum 22 and the stirring body 24 rotate at a rotation speed at which the centrifugal force acting on the laundry in the drum 22 is much larger than the gravity. By the action of centrifugal force, the laundry is pressed against the inner peripheral surface of the drum 22 and dehydrated.

  As described above, according to the present embodiment, in the washing step and the rinsing step, the drum 22 and the stirring body 24 are set in the same direction and the rotation speed of the stirring body 24 is higher than the rotation speed of the drum 22. Rotate to. Thereby, the laundry in the drum 22 is not only struck by the inner peripheral surface of the drum 22 by the stirring by the baffle 23, but is also rubbed or stirred by the blades 24a of the rotating stirring body 24. Therefore, compared with the structure in which the laundry is only stirred by the baffle 23, the cleaning performance and the rinsing performance can be improved.

  Furthermore, according to the present embodiment, as a configuration of the drive unit 30 for rotating the stirring body 24 faster than the drum 22, the stirring body 24 is rotated at a rotational speed equal to that of the drive motor 100. A configuration is adopted in which the drum 22 that requires a larger torque is rotated by decelerating the rotation of the drive motor 100. As a result, the drum 22 and the stirrer are rotated in comparison with the case where the drum 22 is rotated at the same rotational speed as the drive motor 100 and the stirrer 24 is rotated by increasing the rotation of the drive motor 100. The torque generated by the drive motor 100 during the drive of 24 can be reduced, and the power consumption of the drive motor 100 can be reduced.

  Furthermore, according to the present embodiment, the rotor 110 of the drive motor 100 and the stirring body 24 are connected by the single blade shaft 200. Therefore, unlike the configuration in which the rotating shaft of the rotor 110 and the rotating shaft of the stirring member 24 are provided and connected to each other, when the drive unit 30 is assembled, it is not necessary to align the centers of the two rotating shafts. It becomes. Therefore, the assembly of the drive unit 30 becomes easy. In addition, there is no need to worry about an axial deviation that occurs between the two rotating shafts.

  Furthermore, according to the present embodiment, the speed reduction mechanism that reduces the rotation of the blade shaft 200 and transmits it to the drum shaft 300 is constituted by the planetary gear mechanism 400, so that the gears constituting the speed reduction mechanism are the blade shaft 200. In addition, the dimensions of the transmission mechanism TR in the axial direction, that is, the drive unit 30, can be reduced without being aligned in the axial direction of the drum shaft 300. Thereby, since the outer tub 20 and the drum 22 can be enlarged in the front-rear direction, the washing capacity can be increased.

  Further, according to the present embodiment, in the intermediate dehydration process and the final dehydration process, the clutch mechanism unit 600 switches the form of the drive unit 30 from the first form to the second form, thereby stirring the drum 22 and the drum 22. The body 24 can be integrally rotated at a high speed. Thereby, the laundry in the drum 22 is not stirred by the stirring body 24, and the laundry can be appropriately dehydrated.

  Further, according to the present embodiment, the clutch mechanism 600 is configured to move the cylindrical clutch body 610 in the front-rear direction on the outer periphery of the internal gear 420, so that the axis of the blade shaft 200 and the drum shaft 300 In the direction, the arrangement space of the planetary gear mechanism 400 can be used as the movement space of the clutch body 610. Therefore, the dimension of the drive unit 30 in the axial direction of the blade shaft 200 and the drum shaft 300 can be further reduced.

  Furthermore, according to the present embodiment, since the clutch body 610 and the drive motor 100 overlap in the axial direction of the blade shaft 200 and the drum shaft 300, the dimension of the drive unit 30 in the axial direction can be further reduced. it can.

  Further, according to the present embodiment, the clutch body 610 is moved by the elastic force of the clutch spring 620, whereby the rear serration 612 is engaged with the serration 113, and the clutch body 610 rotates together with the rotor 110 by the engagement. Sometimes, the pressing lever 632 is separated from the clutch body 610. For this reason, the rotation of the rotor 110 and the clutch body 610 is not hindered by the contact of the pressing lever 632 with the clutch body 610.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments and the like, and various modifications can be made to the embodiments of the present invention in addition to the above. is there.

  For example, in the above-described embodiment, the planetary gear mechanism 400 is configured as a reduction mechanism that reduces the rotation of the blade shaft 200 and transmits it to the drum shaft 300. However, the speed reduction mechanism is not limited to the planetary gear mechanism 400. For example, the speed reduction mechanism may be constituted by a parallel shaft gear speed reduction mechanism.

  Further, in the above embodiment, the engagement of the front serration 614 of the clutch body 610 and the serration 522 of the clutch plate 520 provided in the bearing unit 500 causes the clutch body 610 to rotate in the circumferential direction with respect to the bearing unit 500. Is regulated. Further, the engagement of the rear serration 612 of the clutch body 610 and the serration 113 of the clutch plate 112 provided on the rotor 110 restricts the rotation of the clutch body 610 relative to the rotor 110 in the circumferential direction. However, the configuration in which the front end portion of the clutch body 610 is engaged with the bearing unit 500 and the configuration in which the rear end portion of the clutch body 610 is engaged with the rotor 110 are not limited to serrations, but are other configurations. Also good. For example, even when a projection is formed at the front end portion and the rear end portion of the clutch body 610, a recess or hole is formed in the bearing unit 500 and the rotor 110, and the projection is fitted into the recess or hole. good.

  Furthermore, in the above-described embodiment, the drum 22 rotates around the tilt axis tilted with respect to the horizontal direction. However, the drum type washing machine 1 may be configured such that the drum 22 rotates about the horizontal axis.

  Furthermore, although the drum type washing machine 1 of the above embodiment does not have a drying function, the present invention can also be applied to a drum type washing machine having a drying function, that is, a drum type washing and drying machine.

  In addition, the embodiment of the present invention can be variously modified as appropriate within the scope of the technical idea shown in the claims.

10 housing
20 Outer tank
22 drums
24 Stirring body (rotating body)
24a Feather (projection)
30 Drive unit (drive unit)
100 drive motor
110 rotor
112 Clutch plate
113 Serration (second engaged part)
200 Blade axis (first rotation axis)
300 Drum shaft (second rotary shaft)
400 Planetary gear mechanism
410 Sun gear
420 Internal gear
430 Planetary gear
440 Planetary Carrier
500 Bearing unit
520 Clutch plate
522 Serration (first engaged part)
600 Clutch mechanism
610 Clutch body
612 Rear serration (second engagement part)
614 Front serration (first engaging part)
620 Clutch spring (elastic member)
630 Clutch drive device
631 Driving machine
632 Pressing lever (pressing member)
TR transmission mechanism
DM moving mechanism

Claims (5)

An outer tub disposed in the housing;
A drum arranged in the outer tub and rotatable around a horizontal axis or an inclined axis inclined with respect to the horizontal direction;
A baffle provided on the inner peripheral surface of the drum;
A rotating body arranged at the rear part of the drum so as to rotate coaxially with the drum, and having a protrusion on the surface that contacts the laundry;
E Bei and a driving unit for rotating the drum and the rotating body, so that the rotational speed of the same direction and the rotating body is faster than the rotational speed of the drum,
The drive unit is disposed behind the outer tub, and includes a drive motor, and a transmission mechanism unit that transmits torque generated by the drive motor to the rotating body and the drum.
The transmission mechanism is
A first rotating shaft that rotates by torque of the drive motor and transmits the rotation to the rotating body;
A speed reduction mechanism that decelerates the rotation of the first rotation shaft;
A second rotating shaft that rotates coaxially with the first rotating shaft at a rotational speed reduced by the speed reducing mechanism and transmits the rotation to the drum;
The first rotating shaft has a front end connected to the rotating body and a rear end connected to the rotor of the drive motor,
The reduction mechanism includes a sun gear, an annular internal gear surrounding the sun gear, a plurality of planetary gears that mesh with both the sun gear and the internal gear, and revolve around the sun gear, A planetary gear mechanism having a planet carrier that rotates with revolution, and the sun gear is provided on the first rotating shaft,
The second rotating shaft includes the first rotating shaft, a front end portion is connected to the drum and a rear end portion is connected to the planet carrier,
A drum-type washing machine characterized by that. In the drum type washing machine according to claim 1 ,
The drive unit further includes a clutch mechanism unit,
The clutch mechanism unit fixes the internal gear so as not to rotate, thereby rotating the first rotation shaft at a rotation speed equal to the rotation speed of the rotor, and the second rotation shaft by the planetary gear mechanism. By rotating the internal gear together with the rotor, the first rotation shaft, the second rotation shaft, and the planetary gear mechanism can be made to rotate at a reduced rotational speed. Switching the form of the drive unit between the second form and the second form capable of being integrally rotated at a rotational speed equal to the rotational speed;
A drum-type washing machine characterized by that. In the drum type washing machine according to claim 2 ,
The drive unit further includes a bearing unit that rotatably supports the second rotation shaft,
The clutch mechanism portion surrounds the outer periphery of the internal gear, and a cylindrical clutch body that is allowed to move in the front-rear direction with respect to the internal gear and is restricted from rotating in the circumferential direction, and the clutch body Including a moving mechanism that moves in the front-rear direction,
A first engagement portion and a second engagement portion are provided at a front end portion and a rear end portion of the clutch body, respectively, and a first engaged portion and a first engagement portion are provided at the bearing unit and the rotor, respectively. 2 engaged parts are provided,
When the clutch body is moved forward by the moving mechanism portion and the first engagement portion is engaged with the first engaged portion, rotation of the clutch body in the circumferential direction with respect to the bearing unit is restricted. The internal gear is fixed so that it cannot rotate,
When the clutch body is moved rearward by the moving mechanism portion and the second engagement portion is engaged with the second engaged portion, the rotation of the clutch body in the circumferential direction with respect to the rotor is restricted, The internal gear is rotatable with the rotor;
A drum-type washing machine characterized by that. In the drum type washing machine according to claim 3 ,
The clutch body is disposed between the bearing unit and the drive motor such that a rear portion of the clutch body is accommodated in the drive motor;
A drum-type washing machine characterized by that. In the drum type washing machine according to claim 3 or 4 ,
The moving mechanism unit is
An elastic member that is interposed between the clutch body and the planetary gear mechanism, moves the clutch body rearward by elastic force, and engages the second engagement portion with the second engaged portion;
The clutch body is moved forward by pushing the clutch body to engage the first engagement portion with the first engaged portion, and the second engagement portion is engaged with the second engaged portion. In a state of engaging the part, including a pressing member that separates from the clutch body,
A drum-type washing machine characterized by that.

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