JP2019092881A - Washing machine - Google Patents

Abstract

To provide a washing machine having a good cleaning performance while suppressing the occurrence of fabric entanglement.SOLUTION: A pulsator 26 includes: a disk-like base portion 100 having a recessed surface 102 on the surface; a protruding portion 110 protruding from the recessed surface 102 at the central portion of the base portion 100; and two wing portions 120 projecting from the recessed surface 102 in a mountainous form and facing each other through the protruding portion 110. The wing portion 120 includes: a first ridge portion 121 extending in the radial direction of the base portion 100 at a position higher than a top portion 111 of the protruding portion 110; a second ridge portion 122 continuous with the first ridge portion 121 and inclined downward to the protruding portion 110 side; a first inclined surface 123 and a second inclined surface 124 which are inclined so that each is inclined upward to the ridge portions 121, 122 from the recessed surfaces 102 on both sides in the circumferential direction of the first ridge portion 121 and the second ridge portion 122; and a projection thread portion 125 which is provided so as to rise from the second ridge portion 122 and extends along the second ridge portion 122.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a washing machine.

  The pulsator is disposed at the bottom of the washing and dewatering tank, and the surface of the pulsator is a fan-shaped inclined surface having a substantially mountain shape which rises from the center toward the outer periphery and a valley connecting the inclined surfaces. For example, Patent Document 1 describes a washing / drying machine to be used. In the washing and drying machine of Patent Document 1, when the pulsator rotates, the clothes slip on the inclined surface and bounce up near the top. This makes it possible to give the laundry a large up and down movement.

  As described above, when the laundry is given a vertical movement, the clothes can be easily spread in the washing and dewatering tank at the time of drying, and the improvement of the drying performance is expected.

Japanese Patent Application Laid-Open No. 2005-80946

  In the above-mentioned washing and drying machine, the movement of clothes during washing, that is, the movement of the laundry is also likely to be simple due to the up and down movement. For this reason, although it is hard to twist a laundry and it is hard to produce fabric entanglement, since it is hard to produce rubbing of laundry etc., cleaning performance tends to become low.

  On the other hand, like the conventional pulsator of a washing machine, rubbing the laundry etc. is more likely to occur simply by strongly stirring the laundry in the horizontal plane by the rotation of the plurality of blades radially extending from the central part. The laundry tends to be twisted and fabric entanglement tends to occur. This makes it difficult to take out the laundry after washing. Moreover, in the case of the washing and drying machine, when drying is performed after washing, the movement of the laundry becomes worse due to the fabric tangling, drying unevenness and wrinkles occur, and the drying performance tends to be deteriorated.

  Then, an object of this invention is to provide the washing machine in which a favorable washing performance is obtained, suppressing generation | occurrence | production of fabric entanglement.

  A washing machine according to a main aspect of the present invention includes a washing tub for containing laundry, a pulsator disposed at the bottom of the washing tub, and a drive unit for driving the pulsator. Here, the pulsator has a disk-like base portion having a recessed surface on the surface, a protruding portion protruding from the recessed surface at a central portion of the base portion, and a convex shape protruding from the recessed surface, and the protruding portion And two opposing wings. Furthermore, the blade portion is inclined so as to continue from the first ridge portion extending in the radial direction of the base portion at a position higher than the top portion of the protrusion portion and the first ridge portion and to descend toward the protrusion portion. A first inclined surface and a second inclination that incline from the second ridge portion and the concave surface on both sides in the circumferential direction of the first ridge portion and the second ridge portion toward these ridge portions. A surface, and a ridge provided so as to rise from the second ridge and extending along the second ridge.

  According to the above configuration, on the outer peripheral side of the pulsator, the laundry is bounced up by moving up the first inclined surface or the second inclined surface by the rotation of the two blade portions, and it becomes easy to move up and down. Further, on the inner circumferential side of the pulsator, the laundry is moved to the center side of the pulsator by colliding with the ridges by moving up the first inclined surface or the second inclined surface by the rotation of the two blade portions. It becomes easy to be stirred in a horizontal surface. Accordingly, when the laundry is washed and rinsed, the laundry moves in a complicated manner in the washing tank, and thus the improvement of the washing performance is expected. Moreover, since the pulsator is configured to move the laundry up and down and also in the horizontal plane, it is difficult for the laundry to be strongly twisted and less likely to cause fabric tangling.

  In the washing machine according to this aspect, the height of the protrusion may be equal to or less than half the height of the blade.

  According to the above configuration, it is possible to widen the space formed between the two blade portions and above the protrusion. As a result, the laundry which ascends on the first inclined surface or the second inclined surface and collides with the ridge portion is easily moved to the center side of the pulsator, and the movement of the laundry in the horizontal plane is improved.

  In the washing machine according to the present aspect, the first inclined surface and the second inclined surface may be configured to have different inclinations.

  According to the above configuration, the movement of the laundry changes between the right rotation and the left rotation of the pulsator, so the laundry moves more complicatedly in the washing tank, and further improvement of the washing performance is expected. Ru.

  In the washing machine according to this aspect, the pulsator may be configured to further include a rotating body provided rotatably with respect to the protrusion above the protrusion. In this case, the height position of the top of the rotor is lower than the height position of the top of the blade.

  According to the above configuration, the laundry is moved to the center side of the pulsator so as to be sent by the rotation of the rotating body. This enables smooth movement of the laundry in the horizontal plane.

  In the case of the above configuration, the rotor may be configured to have a shape in which the diameter decreases in the upward direction.

  With such a configuration, a gap is easily generated between the two wing portions and the rotating body, and the space in which the laundry can move can be enlarged. This makes it easier for the laundry to move to the center side of the pulsator.

  When it is set as said structure, it may be set as the structure by which several protrusion is further formed in the surface of the said rotary body.

  If it is set as such a structure, the effect of the washing by the protrusion can be expected by the laundry coming into contact with the protrusion of the rotating body.

  ADVANTAGE OF THE INVENTION According to this invention, the washing machine in which a favorable washing performance is obtained can be provided, suppressing generation | occurrence | production of fabric entanglement.

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

FIG. 1 is a side sectional view of a full-automatic washing / drying machine according to an embodiment. FIG. 2 is a rear perspective view of the upper part of the full-automatic washing / drying machine according to the embodiment. FIG. 3A is a perspective view of the pulsator as viewed from above according to the embodiment, and FIG. 3B is a perspective view of the pulsator as viewed from below according to the embodiment. FIGS. 4 (a) and 4 (b) are a plan view and a front view, respectively, of the pulsator according to the embodiment, and FIG. 4 (c) is an A- of FIG. 4 (a) according to the embodiment. It is sectional drawing of the pulsator cut | disconnected by A 'line. FIGS. 5 (a) and 5 (b) are diagrams for explaining the movement of the laundry when the pulsator is rotated according to the embodiment. FIG. 6 is a perspective view of the pulsator as viewed from above according to the first modification. FIG. 7 is an exploded perspective view of the pulsator as viewed from above according to the first modification. FIGS. 8 (a) and 8 (b) are a front view and a left side view of a pulsator according to the first modification, respectively, and FIG. 8 (c) is a B-B 'in FIG. 6 according to the first modification. It is sectional drawing of the pulsator cut | disconnected by the line. FIGS. 9A and 9B are diagrams for explaining the movement of the laundry when the pulsator is rotated according to the first modification.

  Hereinafter, a fully automatic washing and drying machine 1 which is one embodiment of a washing machine of the present invention will be described with reference to the drawings.

  FIG. 1 is a side sectional view of a full-automatic washing / drying machine 1 according to the present embodiment. FIG. 2 is a rear perspective view of the upper part of the full-automatic washing / drying machine 1 according to the present embodiment.

  The fully automatic washing / drying machine 1 is provided with a housing 10 constituting an appearance. The housing 10 includes a rectangular cylindrical body portion 11 whose upper and lower surfaces are open, an upper surface plate 12 covering the upper surface of the body portion 11, and a footrest 13 for supporting the body portion 11. The upper surface plate 12 is formed with an outer insertion port 14 for inserting the laundry. The outer inlet 14 is covered by an openable upper lid 15.

  In the housing 10, the outer tub 20 is elastically suspended and supported by four suspension rods 21 having a vibration isolation device. The outer tank 20 includes a substantially cylindrical outer tank main body 22a whose upper surface is open, and an outer tank cover 22b which constitutes the upper surface of the outer tank 20 by covering the upper surface of the outer tank main body 22a. On the upper surface of the outer tub 20, that is, on the outer tub cover 22b, an inner loading slot 22c for loading the laundry is formed at a position corresponding to the outer loading slot 14. The inner charging port 22 c is covered by the outer tub lid 23 so as to be openable and closable.

  In the outer tank 20, a substantially cylindrical washing and dewatering tank 24 whose upper surface is opened is disposed. On the inner circumferential surface of the washing and dewatering tank 24, a large number of dewatering holes 24a are formed over the entire circumference. A balance ring 25 is provided at the top of the washing and dewatering tank 24. A pulsator 26 is disposed at the bottom of the washing and dewatering tank 24. The washing and dewatering tank 24 corresponds to the washing tank of the present invention.

  At an outer bottom portion of the outer tank 20, a drive unit 30 for generating a torque for driving the washing and dewatering tank 24 and the pulsator 26 is disposed. The drive unit 30 includes a drive motor 31 and a transmission mechanism portion 32. The transmission mechanism section 32 has a clutch mechanism, and in the washing process and the rinsing process, the torque of the drive motor 31 is transmitted only to the pulsator 26 to rotate only the pulsator 26 by the switching operation by the clutch mechanism. The torque of the drive motor 31 is transmitted to the pulsator 26 and the washing and dewatering tank 24 to rotate the pulsator 26 and the washing and dewatering tank 24 integrally. The drive unit 30 corresponds to the drive unit of the present invention.

  A drainage port 20 a is formed at the outer bottom of the outer tank 20. A drainage valve 40 is provided at the drainage port 20a. The drain valve 40 is connected to the drain hose 41. When the drain valve 40 is opened, the water stored in the washing and dewatering tank 24 and the outer tank 20 is drained out of the machine through the drain hose 41.

  The drying device 50 and the water supply device 60 are disposed above the outer tank 20 at the rear of the housing 10. The drying device 50 and the water supply device 60 are attached to a fixing plate 16 disposed at the rear of the upper surface of the body portion 11 and covered by the upper surface plate 12.

  The drying device 50 dries the laundry stored in the washing and dewatering tank 24. The drying device 50 includes a circulation air passage 50 a in which a heater and a blower fan are disposed, and the circulation air passage 50 a is connected to the inside of the outer tub 20 by an intake duct 71 and an exhaust duct 72. The intake duct 71 and the exhaust duct 72 are flexible ducts, are formed of an elastic material such as rubber, and have a bellows portion (not shown) in the middle portion. The warm air generated by the operation of the heater and the blower fan is discharged from the circulation air passage 50 a and introduced into the outer tank 20 through the air intake duct 71. Further, the warm air discharged from the outer tank 20 is introduced into the circulation air passage 50 a through the exhaust duct 72. Thus, warm air circulates between the circulation air passage 50 a and the outer tank 20.

  The drying device 50 performs a circulation drying operation by circulation of warm air, and an exhaust drying operation to discharge a part of the circulating warm air to the outside. The upper surface plate 12 is provided with a large number of exhaust holes, and is provided with an exhaust port 51 through which warm air is discharged.

  In the water supply device 60, a water supply port 61 exposed to the outside is connected to an external water supply hose (not shown) extending from a water faucet. The water supply device 60 includes a water supply valve and a detergent container, and when the water supply valve is opened, tap water from the faucet is supplied into the outer tub 20 together with the detergent contained in the detergent container. The water supply device 60 may include a bath water pump.

  In the fully automatic washing and drying machine 1, washing operation, washing and drying operation, or drying operation of various operation courses are performed. The washing operation is an operation of performing only washing, and a washing step, an intermediate dewatering step, a rinsing step and a final dewatering step are sequentially performed. The washing and drying operation is an operation that continuously performs from washing to drying, and the drying step is performed subsequent to the final dewatering step. The drying operation is an operation of performing only drying, and only the drying step is performed.

  In the washing step and the rinsing step, with the water stored in the washing and dewatering tank 24, the pulsator 26 rotates rightward and leftward. As the pulsator 26 rotates, the laundry in the washing and dewatering tank 24 is washed or rinsed. The specific movement of the laundry by the rotation of the pulsator 26 will be described in detail later.

  In the intermediate dewatering process and the final dewatering process, the washing and dewatering tank 24 and the pulsator 26 rotate together at high speed. The laundry is dewatered by the action of the centrifugal force generated in the washing and dewatering tank 24.

  In the drying step, an internal air circulation drying step is performed first, followed by an open air introduction drying step. In the inside air circulation drying step, the circulation drying operation is performed by the drying device 50, and the warm air is circulated between the circulation air passage 50a and the outer tank 20. The circulation of the drying wind quickly raises the temperature in the washing and dewatering tank 24. The pulsator 26 rotates and the laundry is stirred and dried by the circulating hot air. When the temperature rise in the washing and dewatering tank 24 progresses and the moisture evaporates from the laundry and the hot air contains a large amount of moisture, the process is switched to the outside air introducing and drying process. In the outside air introduction and drying step, the drying device 50 performs an exhaust air drying operation to introduce outside air into the circulation air passage 50a and exhaust a part of the warm air circulating from the circulation air passage 50a. Since the water evaporated from the laundry is effectively discharged from the inside of the outer tank 20 to the outside of the housing 10 and the inside of the outer tank 20 is easily dehumidified, drying of the laundry is promoted.

  Next, the configuration of the pulsator 26 will be described in detail with reference to FIGS. 3 (a) to 4 (c).

  FIG. 3 (a) is a perspective view of the pulsator 26 as viewed from above according to the present embodiment, and FIG. 3 (b) is a perspective view of the pulsator 26 as viewed from below according to the present embodiment. is there. FIGS. 4 (a) and 4 (b) are a plan view and a front view, respectively, of the pulsator 26 according to the present embodiment, and FIG. 4 (c) is a view according to the present embodiment. 4A is a cross-sectional view of the pulsator 26 taken along the line A-A 'of FIG.

  The pulsator 26 is formed of a resin material such as polypropylene, and includes a base portion 100, a protrusion 110, and two wing portions 120. The protrusion 110 and the two wings 120 may be formed separately from the base 100 and attached to the base 100, or may be integrally formed with the base 100.

  The base portion 100 has a disk shape. A circular recessed surface 102 is formed inside the flat outer peripheral surface 101 on the surface of the base portion 100. The recessed surface 102 is composed of an outer curved surface 102 a and an inner flat surface 102 b. A cylindrical boss mounting portion 103 is formed at the center of the back surface of the base portion 100. A mounting boss 130 made of metal is mounted on the boss mounting portion 103. The mounting boss 130 is mounted with a blade shaft (not shown) for rotating the pulsator 26. Further, on the back surface of the base portion 100, a plurality of back vanes 104 radially extending from the boss mounting portion 103 are provided. Furthermore, in the base portion 100, a large number of water drainage holes 105 penetrating the front and back in the recessed surface 102 are formed. When draining from the washing and dewatering tank 24, that is, the outer tank 20, the water accumulated on the recessed surface 102 is drained from the water drain hole 105.

  The protrusion 110 protrudes upward from the recessed surface 102 at the central portion of the base portion 100. The protrusion 110 has a trapezoidal pyramidal shape in which both side portions are cut by the overhang of the blade portion 120. The top portion 111 of the protrusion 110 is a circular flat surface and has an insertion hole 112 at the center. The mounting boss 130 and the wing shaft are fixed by a screw (not shown) that passes through the insertion hole 112. The height H1 of the protrusion 110 is equal to or less than half the height H2 of the two blade portions 120 (see FIG. 4C).

  The two blade portions 120 are raised in a mountain shape from the recessed surface 102 and face each other across the protrusion 110. Each wing 120 extends from the protrusion 110 to the outer peripheral edge 100 a of the base 100. A recessed space is formed in the base portion 100 by the recessed surface 102. This concave space is divided into two by two wing parts 120 and the projection part 110 located between them, and two holding space S1 in which the laundry accommodated in the washing and dewatering tank 24 is held is formed. (See FIG. 4 (c)). Further, a central concave space S2 which is recessed with respect to the wing portion 120 is formed between the two wing portions 120 above the protrusion 110 (see FIG. 4B).

  The wing portion 120 includes a first ridge portion 121, a second ridge portion 122, a first inclined surface 123, a second inclined surface 124, and a ridge portion 125. The first ridge portion 121 extends in the radial direction of the base portion 100 at a position higher than the top portion 111 of the protrusion 110. The first ridge portion 121 is a flat surface, and extends horizontally from an intermediate position between the center of the base portion 100 and the outer peripheral edge 100 a to the outer peripheral edge 100 a. The second ridge portion 122 is continuous with the first ridge portion 121 and inclined so as to descend toward the protrusion 110 side. The second ridge portion 122 is a flat surface having a width substantially equal to that of the first ridge portion 121, and is connected to the protrusion 110.

  The first sloping surface 123 and the second sloping surface 124 are such that they rise from the recessed surfaces 102 on both sides in the circumferential direction of the first ridge portion 121 and the second ridge portion 122 toward the ridge portions 121 and 122 respectively. Incline. The first inclined surface 123 and the second inclined surface 124 have different inclinations. That is, the first inclined surface 123 has a relatively small inclination and the second inclined surface 124 has a relatively large inclination. For example, the inclination gradient of the first inclined surface 123 with respect to the horizontal direction is about 35 degrees, and the inclination gradient of the second inclined surface 124 with respect to the horizontal direction is about 50 degrees. In the first inclined surface 123 and the second inclined surface 124 shown by oblique lines in FIG. 4A, the slopes 123a and 124a connected to the second ridge 122 are also elevated in the direction along the second ridge 122. Incline.

  The ridges 125 are provided to swell from the second ridge 122 and extend along the second ridge 122. The protrusion 125 has an elongated substantially rectangular shape. Both side surfaces 125a of the ridge 125 along the second ridge 122 rise substantially vertically, and the angle with respect to the horizontal direction is larger than that of the first inclined surface 123 and the second inclined surface 124. The protrusion 125 may be formed separately from the second ridge 122 and attached to the second ridge 122 or may be formed integrally with the second ridge 122.

  Next, the operation of the pulsator 26 will be described.

  FIGS. 5A and 5B are views for explaining the movement of the laundry when the pulsator 26 is rotated according to the present embodiment.

  As shown in FIGS. 5 (a) and 5 (b), in the washing and dewatering tank 24 in which water is stored during washing and rinsing, the clothes, that is, the laundry, are two feathers connected in the radial direction of the pulsator 26. It is held in the holding space S1 on both sides so as to be divided by the portion 120 and the projection 110. In the central concave space S2, the laundry is hard to be present. In such a state, the pulsator 26 is rotationally driven.

  As shown in FIG. 5A, when the pulsator 26 rotates rightward as viewed from above, the first inclined surfaces 123 of the two wing portions 120 progress in the circumferential direction and contact the laundry. The laundry is lifted by sliding on the first inclined surface 123 while being pushed by the first inclined surface 123. On the outer peripheral side of the pulsator 26, the laundry, in which the first inclined surface 123 is lifted toward the first ridge 121, is moved upward from the first ridge 121 as shown by the black arrows in FIG. 5 (a). It is released upward. On the other hand, on the inner circumferential side of the pulsator 26, the laundry in which the first inclined surface 123 is lifted toward the second ridge portion 122 is provided at the second ridge portion 122 as shown by the hatched arrow in FIG. The central concave space S2 is moved toward the center of the pulsator 26 in such a manner as to conform to the downward slope of the second ridge portion 122.

  As shown in FIG. 5B, when the pulsator 26 rotates leftward as viewed from above, the second inclined surfaces 124 of the two wing portions 120 progress in the circumferential direction and contact the laundry. The laundry is slid up on the second inclined surface 124 while being pushed by the second inclined surface 124. As in the case of the right rotation, on the outer peripheral side of the pulsator 26, as shown by the black arrow in FIG. 5B, the laundry having the second inclined surface 124 raised is discharged upward from the first ridge portion 121. Further, on the inner peripheral side of the pulsator 26, as shown by the hatched arrows in FIG. 5B, the laundry lifted up the second inclined surface 124 pulsator the central concave space S2 due to the collision with the ridge portion 125. Move to the center side of 26. In addition, since the 2nd inclined surface 124 is steeper than the 1st inclined surface 123, compared with the 1st inclined surface 123, a laundry can not rise easily. Therefore, when the pulsator 26 rotates leftward, the vertical movement and the movement toward the center of the laundry tend to be smaller than when the pulsator 26 rotates right.

  As described above, in the present embodiment, on the outer peripheral side of the pulsator 26, the laundry is bounced up and easily moves up and down due to the rotation of the two wing portions 120. On the other hand, on the inner peripheral side of the pulsator 26, the laundry is moved so as to be drawn to the center side of the pulsator 26 by the rotation of the two wing parts 120, and it becomes easy to be stirred in the horizontal plane. Therefore, since the laundry moves in the washing and dewatering tank 24 in a complicated manner during washing and rinsing, rubbing between the laundry and the like is likely to occur, and improvement of the washing performance is expected. Moreover, since the pulsator 26 is configured not to stir the laundry entirely in the horizontal plane as in the prior art but to move the laundry up and down in the horizontal plane as well, a strong twist is caused to the laundry. Less likely to occur and less likely to occur.

  Further, in the present embodiment, the movement of the laundry changes between the right rotation and the left rotation of the pulsator 26 because the inclination gradient between the first inclined surface 123 and the second inclined surface 124 is different. As the laundry moves more complicatedly in the washing and dewatering tank 24, further improvement of the washing performance is expected.

  Furthermore, in the present embodiment, since the height of the protrusion 110 is equal to or less than half the height of the blade 120, the central concave space S2 can be made wider. As a result, the laundry which ascends the first inclined surface 123 or the second inclined surface 124 of the wing portion 120 and collides with the ridge portion 125 is easily moved to the center side of the pulsator 26, and the laundry in the horizontal plane Movement improves.

  In the present embodiment, when drying, the laundry can be bounced upward by the rotation of the pulsator 26, so the warm air from the drying device 50 can be well applied to the laundry. Therefore, not only the improvement of the cleaning performance but also the improvement of the drying performance is expected. That is, in the present embodiment, the pulsator 26 is configured to achieve both the cleaning performance and the drying performance.

  As mentioned above, although the embodiment of the present invention was described, the present invention is not limited at all by the above-mentioned embodiment etc. In addition, the embodiment of the present invention can be variously modified in addition to the above. is there.

<Modification 1>
Instead of the pulsator 26 of the above embodiment, a pulsator 26A described below can be used.

  FIG. 6 is a perspective view of the pulsator 26A as viewed from above according to the first modification. FIG. 7 is an exploded perspective view of the pulsator 26A as viewed from above according to the first modification. 8A and 8B are a front view and a left side view of the pulsator 26A according to the first modification, respectively, and FIG. 8C is a B-B diagram of FIG. 6 according to the first modification. It is sectional drawing of pulsator 26A cut | disconnected by 'line.

  The pulsator 26A is formed of a resin material such as polypropylene, and includes a base 200, a protrusion 210, two blades 220, and a rotating body 230. The protrusion 210 and the two wings 220 may be formed separately from the base 200 and attached to the base 200, or may be integrally formed with the base 200.

  The configuration of the base unit 200 is the same as the configuration of the base unit 100 of the above embodiment. That is, the outer circumferential surface 201 and the recessed surface 202 are formed on the surface of the base portion 200. The recessed surface 202 is composed of an outer curved surface 202a and an inner flat surface 202b. Further, a boss mounting portion 203 to which a metal mounting boss 240 is mounted and a plurality of back blades 204 are provided on the back surface of the base portion 200. Furthermore, in the base portion 100, a large number of water drainage holes 205 penetrating the front and back are formed in almost the entire area of the recessed surface 202.

  The protrusion 210 protrudes upward from the recessed surface 202 at the center of the base 200. The protrusion 210 has a trapezoidal pyramidal shape in which both side portions are cut by the overhang of the blade 220. The top 210a of the projection 210 is provided with a rotary shaft 211 projecting upward at the center, and a sliding plate 250 having an annular disk shape is attached around the rotary shaft 211. The sliding plate 250 is formed of a material having a small coefficient of friction and excellent wear resistance, such as stainless steel. Further, an insertion hole 212 is formed at the central portion of the top portion 210 a of the protrusion 210. The mounting boss 240 and the wing shaft are fixed by a screw (not shown) passing through the insertion hole 212. The height H3 of the protrusion 210 is equal to or less than half the height H4 of the two blade portions 220 (see FIG. 8C).

  The two blade portions 220 bulge in a mountain shape from the recessed surface 202 and face each other across the protrusion 210. Each blade 220 extends from the protrusion 210 to the outer peripheral edge 200 a of the base 200. In the base portion 200, a concave space is formed by the concave surface 202, and the concave space is divided into two by the two wings 220 and the projection 210, and two holding spaces S3 are formed on both sides of these. (See FIG. 8 (c)). In addition, a central concave space S4 is formed between the two blade portions 220 above the protrusion 210 (see FIG. 8A).

  The configuration of the blade portion 220 is the same as the configuration of the blade portion 120 of the above embodiment, and the first ridge portion 221, the second ridge portion 222, the first inclined surface 223, and the second inclined surface 224; And a projecting portion 225. The first inclined surface 223 has a relatively small inclination and the second inclined surface 224 has a relatively large inclination. For example, the inclination gradient of the first inclined surface 223 with respect to the horizontal direction is about 35 degrees, and the inclination gradient of the second inclined surface 224 with respect to the horizontal direction is about 50 degrees. The slopes 223 a and 224 a of the first slope 223 and the second slope 224 connected to the second ridge 222 are also inclined so as to rise in the direction along the second ridge 222. Furthermore, both side surfaces 225a of the ridge portion 225 along the second ridge portion 222 rise substantially vertically, and the angle with respect to the horizontal direction is made larger than the first inclined surface 223 and the second inclined surface 224. The ridges 225 may be formed separately from the second ridges 222 and attached to the second ridges 222, or may be integrally formed with the second ridges 222.

  The rotating body 230 is formed in a barb shape, and the diameter thereof decreases in the upward direction. At the center of the rotating body 230, an opening 231 into which the rotation shaft portion 211 is inserted is provided. Further, on the surface of the rotating body 230, a large number of projections 232 having a trapezoidal upper surface are formed so as to line up annularly over two upper and lower stages.

  The rotary shaft 230 is rotatably supported by the rotary shaft portion 211 by inserting the rotary shaft portion 211 into the opening 231. Thus, the rotating body 230 is disposed above the protrusion 210, that is, in the central concave space S4, and can rotate relative to the protrusion 210. The rotating body 230 includes a cap 233, and the opening 231 is covered with the cap 233 after the rotating body 230 is disposed above the protrusion 210. The rotating body 230 rotates on the sliding plate 250 and slides relative to the sliding plate 250. Since the sliding plate 250 has a low frictional resistance, the rotating body 230 rotates smoothly. In the state where the rotating body 230 is disposed above the protrusion 210, the height position P1 of the top of the rotating body 230 is lower than the height position P2 of the top of the wing portion 220 (FIG. 8 (c)) reference).

  Next, the operation of the pulsator 26A will be described.

  FIGS. 9A and 9B are diagrams for explaining the movement of the laundry when the pulsator 26A rotates according to the first modification.

  As shown in FIGS. 9 (a) and 9 (b), in the washing and dewatering tank 24 in which water is stored during washing and rinsing, the laundry is a holding space on both sides of the two wings 220 and the projection 210. It is held at S3. In the central concave space S4, the laundry is hard to be present. In such a state, the pulsator 26A is rotationally driven.

  As shown in FIG. 9 (a), when the pulsator 26A rotates rightward as viewed from above, on the inner peripheral side of the pulsator 26A, as shown by the black arrow in FIG. 9 (a), the first inclined surface 223 is lifted. The washed laundry is discharged upward from the first ridge portion 221. Further, on the inner peripheral side of the pulsator 26A, as shown by the hatched arrows in FIG. 9A, the laundry lifted up the first inclined surface 223 pulsator the central concave space S4 due to the collision with the ridge portion 225. Move to the center of 26A. At this time, in the above embodiment, the laundry moves to slide on the top portion 111 of the protrusion 110 in the central concave space S2, but in the present modification, the laundry moves in the central concave space S4 as a rotating body Move as sent by 230 turns. At this time, the laundry contacts the protrusion 232 of the rotating body 230.

  As shown in FIG. 9B, when the pulsator 26A rotates left as viewed from above, on the outer peripheral side of the pulsator 26A, the second inclined surface 224 is raised as shown by the black arrow in FIG. 9B. The laundry is discharged upward from the first ridge portion 221. Further, on the inner peripheral side of the pulsator 26A, as shown by the hatched arrows in FIG. 9 (b), the laundry lifted up the second inclined surface 224 pulsator the central concave space S4 due to the collision with the ridge portion 225. Move to the center of 26A. As in the case of right rotation, the laundry moves so as to be fed by the rotation of the rotating body 230 in the central concave space S4. At this time, the laundry contacts the protrusion 232 of the rotating body 230. In addition, since the 2nd inclined surface 224 is steeper than the 1st inclined surface 223, compared with the 1st inclined surface 223, a laundry can not rise easily. For this reason, when the pulsator 26A rotates to the left, the vertical movement and the movement toward the center of the laundry tend to be smaller than when the pulsator 26A rotates to the right.

  As described above, even with the configuration of the present modified example, the same function and effect as those of the above embodiment can be expected.

  Moreover, in this modification, the laundry moves so as to be sent by rotation of the rotating body 230 in the central concave space S4. This enables smooth movement of the laundry in the horizontal plane.

  Furthermore, in the present modified example, since the rotating body 230 is formed in a shape in which the diameter decreases toward the upper side, a gap is easily generated between the two wing portions 220 and the rotating body 230, and the laundry is You can enlarge the space you can move. This makes it easier for the laundry to move to the center side of the pulsator 26A.

  Furthermore, in the present modified example, when the laundry comes in contact with the protrusion 232 of the rotating body 230, the effect of the washing by the protrusion 232 can be expected.

Other Modifications
In the above embodiment, the recessed surface 102 is configured of the curved surface 102 a and the flat surface 102 b. However, the recessed surface 102 may be any surface that is recessed from the outer peripheral portion of the base portion 100, and may be configured only by a curved surface or may be configured only by a flat surface.

  Further, in the above embodiment, the two blade portions 120 extend to the outer peripheral edge 100 a of the base portion 100. However, the two blade portions 120 may not reach the outer peripheral edge 100a. However, it is desirable that the two blade portions 120 extend outside the length position of 90% of the radius of the base portion 100, that is, the pulsator 26.

  Furthermore, although the inclination slope of the 1st inclined surface 123 and the 2nd inclined surface 124 differs in the said embodiment, you may be equal.

  Furthermore, in the above embodiment, the protrusion 110 is formed in a substantially trapezoidal cone shape, but the shape of the protrusion 110 may be any shape.

  Furthermore, in the above embodiment, the ridge 125 is formed in a substantially rectangular shape having a slender shape, but the ridge 125 is provided on the second ridge 122 so as to protrude from the second ridge 122 as a whole. It may extend along, and may have other shapes. For example, the protrusion 125 may not be continuous from end to end, and there may be an interrupted portion in the middle.

  Furthermore, in the first modification, the rotating body 230 is formed in a reverse rod shape. However, the rotating body 230 may be formed in another shape, for example, may be formed in a hollow trapezoidal pyramid shape or in a disk shape.

  Furthermore, in the above embodiment, an example is shown in which the present invention is applied to a fully automatic washing and drying machine 1 equipped with a drying function of clothes. However, the present invention can also be applied to a fully automatic washing machine not equipped with the drying function of clothes.

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

1 Fully automatic washing and drying machine (washing machine)
24 laundry dewatering tank (washing tank)
26 pulsator
30 Drive unit (drive unit)
100 base part
102 recessed surface
110 projection
120 wings
121 first ridge
122 2nd ridge
123 1st inclined surface
124 2nd inclined surface
125 ridges
230 rotating body
232 projection

Claims (6)

A washing tub in which the laundry is stored,
A pulsator disposed at the bottom of the washing tub;
And a drive unit for driving the pulsator.
The pulsator is
A disk-like base portion having a recessed surface on the surface;
A projection projecting from the recess surface at a central portion of the base portion;
And two ridges raised in a mountain shape from the recess surface and facing each other across the protrusion;
The blade portion is
A first ridge extending radially of the base at a position higher than the top of the protrusion;
A second ridge that is continuous from the first ridge and slopes downward to the protrusion;
A first inclined surface and a second inclined surface which are inclined so as to go upward from the recessed surfaces on both sides in the circumferential direction of the first ridge portion and the second ridge portion toward the ridge portions,
And a ridge provided so as to rise from the second ridge and extending along the second ridge.
Washing machine characterized by. In the washing machine according to claim 1,
The height of the protrusion is equal to or less than half the height of the blade.
Washing machine characterized by. In the washing machine according to claim 1 or 2,
The first inclined surface and the second inclined surface may have different inclinations.
Washing machine characterized by. The washing machine according to any one of claims 1 to 3.
The pulsator further includes a rotating body provided rotatably with respect to the protrusion above the protrusion,
The height position of the top of the rotor is lower than the height position of the top of the blade,
Washing machine characterized by. In the washing machine according to claim 4,
The rotating body has a shape in which the diameter decreases toward the upper side,
Washing machine characterized by. In the washing machine according to claim 4 or 5,
A plurality of protrusions are formed on the surface of the rotating body,
Washing machine characterized by.

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