JP3604802B2 - Washing machine - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a washing machine. In particular, the present invention relates to a washing machine provided with a stirring blade for stirring washing water and laundry on a side surface of a washing tub.
[0002]
[Prior art]
The present applicant has proposed a washing machine having a configuration in which a stirring wing is provided on a side surface of a washing tub (for example, Japanese Patent Application No. 7-224214). In such a washing machine, the planar shape of the washing tub can be made to be a rectangle having a side surface provided with the stirring blade as a longitudinal side surface. By taking advantage of this, a small washing machine that could not be realized by a conventional washing machine, for example, a washing machine having a narrow width or a washing machine having a plurality of washing tubs within the width of a standard washing pan. Machine can be realized.
[0003]
[Problems to be solved by the invention]
By the way, in such a small washing machine, it is preferable for the washing machine to improve the washing power without increasing the size of the washing machine. In addition, it is desired to avoid an increase in the cost of the washing machine.
In addition, the stirring blades and the supporting portions on the side surfaces of the washing tub receive a greater load than when the stirring blades are on the bottom surface of the washing tub. In order to withstand such a load, it is not preferable that the size of the washing machine is increased and the cost is increased.
[0004]
Therefore, a main object of the present invention is to provide a washing machine having a high detergency and having a stirring blade on a side surface of a washing tub.
Another object of the present invention is to provide a small-sized washing machine having a stirring wing on a side surface of a washing tub.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the washing machine of the invention according to claim 1 is
A washing tub for washing, having a pair of long side surfaces and a pair of short side surfaces, having a substantially rectangular planar shape partitioned by each side, containing washing water and laundry,
Washing, provided on a longitudinal side surface in the washing tub such that a central axis thereof intersects the longitudinal side surface, and having a disk that rotates or rotates about the central axis, and a protrusion protruding from the disk surface. With stirring blades for stirring water and laundry,
The stirrer blades are provided along the outer periphery of the stirrer and protrude into the washing tub. When the stirrer blades rotate and the washing water receives a centrifugal force and rushes out in the radial direction, the water splashing control is performed. With ribsIt is characterized by the following.
[0013]
According to this configuration,It has the following functions. That is, when the agitating blade rotates and the washing water jumps out in the radial direction due to the centrifugal force, the washing water hits the water splash regulating rib, so that the washing water flying direction can be changed. As a result, water splash can be suppressed.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The washing machine of the present invention is provided with stirring blades on the side of the washing tub, and as described in the section of the prior art, can be configured as a new washing machine that cannot be realized by the conventional washing machine. As a preferred example, a two-tub washing machine having a plurality of washing devices will be described. The washing machine of the present invention is applied to the sub-washing device in the two-tub washing machine. The washing machine of the present invention is not limited to being applied to such a two-tub washing machine, and may be configured as a single washing machine.
[0015]
FIG. 1 is a front sectional view of a schematic configuration of a two-tub washing machine to which the washing machine according to the first embodiment of the present invention is applied. In the following description, directions are described with reference to a front view, unless otherwise specified.
The two-tub washing machine 1 has a housing 10 having a substantially rectangular shape which is substantially determined in the horizontal direction, a main washing device 20 disposed on the right side of the housing 10, and a main washing device 20. And a sub-washing device 40 disposed in the housing 10 adjacent to the sub-washing device.
[0016]
The washing machine of the present invention is applied to the sub-washing device 40.
The main washing device 20 has the same configuration as a generally known fully automatic washing machine, and can perform washing and dehydration. The auxiliary washing device 40 is a washing tub. The main washing device 20 and the sub-washing device 40 can be operated simultaneously or separately, and can separately wash.
[0017]
A pipe 51, a valve 52, and the like are provided to supply water to the main washing device 20 and the sub-washing device 40. One end of the pipe 51 is connected to an external water supply facility (not shown) such as tap water, and the other end is branched and introduced into each washing device. The valve 52 is provided for each washing device, can be operated manually or automatically, and can supply water to each washing device separately.
[0018]
Further, in order to drain the water from the main washing device 20 and the sub-washing device 40, a drain pipe 61, a valve 62, and the like, which are connected to each washing device and led out of the machine, are provided.
The main washing device 20 includes, as a washing tub, an outer tub 21 supported by a hanging rod 26, and an inner tub 22 rotatably provided in the outer tub 21 and having a large number of small holes on the surface. I have. The inner tank 22 and the stirring blade 23 provided at the bottom in the inner tank 22 are driven by a driving device 24 including a motor 25 and the like. During washing and rinsing, only the stirring blade 23 rotates in one direction or both directions, and during dehydration, both the stirring blade 23 and the inner tank 22 rotate in one direction at high speed.
[0019]
The sub-washing device 40 has a substantially rectangular inner shape, and includes a washing tub 41 for storing washing water and laundry therein, and a central shaft for stirring the laundry and washing water in the washing tub 41. A rotating shaft 46 is provided so as to intersect the longitudinal side surface 41b of the washing tub 41, and has a disk-shaped stirring blade 42 whose surface is formed in an uneven shape, and one or both directions when washing and rinsing the stirring blade 42. And a driving mechanism 43 for rotating the motor.
[0020]
The drive mechanism 43 is driven by a motor 44 as a drive source for rotating the stirring blade 42, a small pulley 49 that rotates integrally with the output shaft of the motor 44, a belt 48 wound around the small pulley 49, and a belt 48. A large pulley 47 that rotates integrally with the rotating shaft 46, the above-described rotating shaft 46 fixed to the center of the stirring blade 42, and a bearing that rotatably supports the rotating shaft 46 on the longitudinal side surface 41b of the washing tub 41. And a part 45. The rotation of the motor 44 is reduced by the small pulley 49, the belt 48, and the large pulley 47, and transmitted to the stirring blade 42 via the rotary shaft 46.
[0021]
The washing water and the laundry stored in the washing tub 41 are stirred by the stirring blades 42. At this time, the laundry is washed by the water current and by friction with the stirring blades 42 and the inner surface of the washing tub 41, and is similarly rinsed.
Hereinafter, each part will be described in detail.
FIG. 2 is a partially sectional left side view of the sub-washing device 40. This will be described with reference to FIGS.
[0022]
The washing tub 41 is long in the front-back direction with the longitudinal side surface 41c along the left side surface of the housing 10, and is formed in a container shape that opens upward.
The washing tub 41 includes a bottom surface 41a, a pair of opposed long side surfaces 41b and 41c and a pair of opposed short side surfaces 41d and 41e, which are side surfaces rising from the periphery of the bottom surface 41a. Each side surface is provided substantially perpendicular to the bottom surface 41a except for a part of the long side surface 41b as described later. The bottom surface 41a has a concave curved surface 41f at its front and rear portions, and is connected to the short side surfaces 41d and 41e via the concave curved surface 41f. Therefore, the bottom surface 41a can guide the water flow accompanying the rotation of the stirring blade 42 without stagnation, and can maintain the cleaning effect without weakening the water flow. In addition, a drain port 63 is formed in a lowermost portion of the bottom surface 41a, and one end of a drain pipe 61 is connected to the drain port 63.
[0023]
The stirring blade 42 is disposed substantially at the center of the longitudinal side surface 41b. The stirring blade 42 includes a disk 42a that rotates about a rotation shaft 46, and a protrusion 42b that protrudes from the surface of the disk 42a. The projections 42b are arranged radially around the rotation shaft 46 at several places, for example, three places at equal angles.
By the way, when the water surface in the washing tub 41 is near the center of the stirring blade 42 and the stirring blade 42 is rotated, an impact load acts on the stirring blade 42 when the protrusion 42 b passes through the water surface. There are cases. Even in such a case, since the protrusions 42b are evenly arranged at three places, the plurality of protrusions 42b do not pass through the water surface at the same time, so that the impact load applied to the stirring blade 42 can be suppressed. it can. Therefore, it is possible to reduce the size of the stirring blade 42 and the bearing 45 as a supporting portion thereof. Note that the protrusions 42b are not limited to three equal parts. In short, it is only necessary that a plurality of the protrusions 42b be provided so as to avoid a position where a plurality of the protrusions 42 sandwich the center of the stirring blade 42 mutually. In addition, since the protrusions 42b are evenly arranged to provide a good rotational balance, the load on the bearing 45 can be further reduced, and the size of the bearing 45 can be further reduced. In addition, the protrusions 42b may be evenly arranged at odd-numbered positions, such as five equal intervals.
[0024]
FIG. 3 is a partial sectional front view of the sub-washing device 40. FIG. 4 is a partial cross-sectional plan view of the sub-washing device 40. 3 and 4 show an enlarged view of the vicinity of the stirring blade 42, and FIG. 3 shows a cross-sectional shape of the stirring blade 42. In the following description, the “axial direction” is a direction in which the rotating shaft 46 extends, and the “radial direction” is a direction orthogonal to the axial direction. This will be described with reference to FIGS.
[0025]
The protruding portion 42b is formed in a substantially truncated quadrangular pyramid shape extending in a radial direction from a peripheral portion of the disk 42a toward the center thereof. Each surface of the truncated pyramid and the surface of the disk 42a are smoothly connected. The end surface 42c of the projection 42b near the outer periphery of the stirring blade 42 and the top surface 42d on the side protruding in the axial direction are connected by a curved surface 42e having a predetermined radius R. The predetermined radius R is preferably not less than 20 mm. In this case, the end near the outer periphery of the protrusion 42b does not protrude into the washing tub 41. To take out the laundry. At this time, the protrusions 42b are hard to catch on the laundry and are easy to use.
[0026]
By the way, when the stirring blade 42 is on the side surface of the washing tub 41 as in the sub-washing device 40, the load acting on the stirring blade 42 is such that the stirring blade is provided on the bottom surface of the washing tub for the same amount of laundry. And especially at the center of the stirring blade 42. Therefore, the size of the stirring blade 42 and the bearing 45 tends to be large so as to withstand a large load. Further, in the conventional agitating blade on the bottom surface of the washing tub, the surface thereof is recessed downward from the peripheral portion to the center portion, so that the ribs protrude to the rear side. Attaching such stirring blades to the side surface of the washing tub 41 is not preferable in terms of space efficiency. In the present invention, the disk 42a is formed as follows.
[0027]
The disk 42 a is formed so that the diameter is longer than the interval between the longitudinal side surfaces of the washing tub 41. Therefore, since the distance between the stirring blade 42 and the longitudinal side surface 41c is limited, the laundry in the washing tub 41 can be more effectively stirred and washed without leaving the washing blade 41 much.
The disk 42a is formed such that a portion closer to the center protrudes inward of the washing tub 41 than a portion closer to the outer periphery. The disk 42a has a thick boss 42i at the center thereof to which the rotating shaft 46 is fixed, and a thin flange 42j extending radially from the boss 42i. The flange portion 42j is formed in a substantially plate shape, and a portion closer to the center gently protrudes inward of the washing tub 41 than a portion closer to the outer periphery. The flange portion 42j and the boss portion 42i are connected so as to protrude smoothly and with a large inclination. A rib 42k is formed on the back surface of the flange 42j.
[0028]
The rib 42k is formed so that the thickness (dimension in the axial direction) increases toward the center of the disk 42a and does not project to the rear side (right side) of the disk 42a. Therefore, the rib 42k can be made thicker near the center of the disk 42a with a large load, so that the rib 42k needs to have a minimum size for maintaining strength, and the disk 42a can be reduced in weight.
[0029]
The boss 42i protrudes in the axial direction to substantially the same extent as the protrusion 42b. The boss portion 42i can fix the rotating shaft 46 with a sufficient length without projecting to the back side of the disk 42a. Therefore, the strength of the boss portion 42i of the stirring blade 42 on which a large force acts can be maintained, so that the weight of the stirring blade 42 can be reduced. In addition, even if the boss part 42i protrudes in the washing tub 41, there is no possibility that the cloth rotation and the cleaning power are reduced. In addition, since the protrusion of the boss portion 42i is almost the same as that of the protrusion portion 42b, there is no hindrance to taking out the laundry.
[0030]
Thus, the strength of the boss portion 42i and the rib 42k can be easily increased, and the protrusion of the disk 42a to the outside of the washing tub 41 can be reduced. As a result, even when a large load is applied to the center of the stirring blade 42, the weight of the stirring blade 42 can be reduced, and the light weight of the stirring blade 42 reduces the load applied to the rotating shaft 46 and the bearing 45. be able to. Therefore, the sub-washing device 40 can be downsized.
[0031]
The bearing part 45 has a built-in bearing (not shown) for rotatably supporting the rotating shaft 46 and a seal member (not shown) for preventing leakage of washing water from the washing tub 41. I have. The bearing 45 has a predetermined support rigidity. When a force is applied to the rotating shaft 46, the rotating shaft 46 is supported at an angle determined by the support rigidity.
The bearing 45 supports the load acting on the stirring blade 42 during stirring as described above, and the tension of the belt 48 acting on the large pulley 47. That is, the motor 44 is fixed to the bottom portion of the housing 10 at the lower rear portion of the stirring blade 42 so that the belt 48 can be stretched with an appropriate tension. Therefore, the large pulley 47 is constantly subjected to a rearward and downward tension (arrow F1 in FIG. 2; arrows F2 to F3 in FIGS. 3 to 4 are component forces of the arrow F1).
[0032]
The rotating shaft 46 has a bearing 45 inserted at the center thereof, the stirring blade 42 is fixed to the left end inside the washing tub 41, and the large pulley 47 is attached to the right end outside the washing tub 41. Have been. The rotating shaft 46 is supported by the bearing portion 45 in a state where the rotating shaft 46 is inclined obliquely rearward and downward by the tension F1 received from the belt 48 and is inclined with respect to a later-described mounting portion 41i of the longitudinal side surface 41b. The mounting portion 41i is a vertical surface parallel to the longitudinal side surface 41c, and in this support state, the rotating shaft 46 is inclined with respect to the normal to the longitudinal side surface 41c and also with respect to the horizontal direction. That is, the axis 46c of the rotating shaft 46 (shown by a one-dot chain line in FIGS. 3 and 4) is perpendicular to the normal VL of the mounting portion 41i (shown by a two-dot chain line in FIGS. 3 and 4). It is inclined at an angle D2 in a plan view and at an angle D1 in a front view. As described above, by making the rotating shaft 46 be inclined with respect to the longitudinal side surface 41c, the cleaning power can be improved as described later. Further, the detergency can also be improved by making the rotating shaft 46 oblique to the horizontal direction.
[0033]
In addition, since the rotating shaft 46 is attached in a state of being inclined by receiving the tension F1 of the belt 48, the support rigidity of the bearing portion 45 does not need to be so high that the bearing portion 45 does not incline even if it receives the tension F1. 45 can be reduced in size. This is because it is preferable from an aesthetic standpoint that the agitating blades 42 do not become uneven with respect to the longitudinal side surface 41b. For this reason, the bearing 45 is provided with high support rigidity so that the rotating shaft 46 resists the tension F1. It is conceivable to be able to support in a substantially orthogonal state with respect to the longitudinal side surface 41b. By the way, in general, the bearing portion tends to be longer in the axial direction as its supporting rigidity is higher. Therefore, the bearing portion having high supporting rigidity was easy to increase in size. In particular, since the bearing portion 45 can be reduced in size in the axial direction, the lateral width of the sub-washing device 40 and thus the two-tub washing machine 1 can be reduced. Therefore, it is preferable for realizing a two-tub type washing machine capable of performing the shared washing in which the width can be made close to the size of a standard household washing machine bread.
[0034]
Further, even if the rotating shaft 46 is inclined, there is no aesthetic inconvenience as described below.
The longitudinal side surface 41b includes a concave portion 41g that is recessed rightward in which the disk 42a of the stirring blade 42 is accommodated, and a flat portion 41h that can come into contact with the laundry. The concave portion 41g is formed in a substantially cylindrical inner shape having a diameter larger than that of the circular plate 42a so that the stirring blade 42 can rotate without any trouble inside the concave portion 41g. The part which becomes the end face of this cylinder is the above-mentioned attachment part 41i. The plane portion 41h is provided so that its normal line is inclined with respect to the axis of the cylinder of the concave portion 41g, and the direction and angle of inclination are substantially the same as the direction and angle of inclination of the rotating shaft 46 with the normal line of the mounting portion 41i. Is set to Therefore, even if the rotating shaft 46 is inclined as described above, an uneven step does not occur between the disk 42a of the stirring blade 42 and the flat portion 41h of the longitudinal side surface 41b. More specifically, the axial dimension of the concave portion 41g at the upper end, lower end, front end, and rear end is dimensions A, B, C, and D, respectively, where dimension A <dimension B and dimension C < It is dimension D. Accordingly, the distance between the longitudinal side surface 41c and the plane portion 41h of the longitudinal side surface 41b also differs depending on the position in the washing tub 41. That is, the interval at the front upper portion of the washing tub 41 is wide, the interval at the rear lower portion is narrow, and the interval between the front lower portion and the rear upper portion is an intermediate dimension between them. As described above, since the intervals between the longitudinal side surfaces are different, the detergency can be improved as described later.
[0035]
Referring to FIGS. 2 and 3, a specified water level H is set in washing tub 41, which defines a standard amount of washing water stored inside. The specified water level H is set in accordance with the amount of washing water in which washing water is sufficiently stored in the washing tub 41 and the laundry can be stirred in the washing water. It is set so as to be located near the center between the prescribed water level H and the bottom surface 41a. Further, the prescribed water level H is set at a predetermined distance L1 above the upper end of the stirring blade 42. The predetermined distance L1 is preferably set within 20 mm. This is because if the predetermined distance L1 is large, the detergency decreases, and if the predetermined distance L1 is small, water splashing is likely to occur.
[0036]
In the sub-washing device 40, a step 41j extending forward and backward from the short side surface 41d to the short side surface 41e is formed as a water supply mark at the position of the long side surface 41b corresponding to the prescribed water level H. By supplying water using the step 41j as a mark, it is possible to easily and properly supply water by manual operation. Further, since the step 41j is formed from the short side surface 41d to the short side surface 41e, it can be easily recognized. The water supply mark is not limited to the step 41j. For example, the shape may be a protrusion. Also, it may be provided on a part of the side surface. Further, it may be formed on another side surface.
[0037]
Next, the operation of the sub-washing device 40 will be described.
The stirring blade 42 repeats normal rotation and reverse rotation at a predetermined rotation speed and at predetermined time intervals. With the rotation of the stirring blade 42, the washing water and the laundry rotate while alternately passing through a wide upper part and a narrow lower part in the washing tub 41.
At this time, since the rotating shaft 46 is inclined with respect to the longitudinal side surface 41c, the rotating laundry tends to approach or move away from the longitudinal side surface 41c, so that the rotating shaft 46 is compared with the case where the rotating shaft 46 is orthogonal to the longitudinal side surface 41c. In addition, changes in the rotation of the laundry are likely to occur. As a result, the laundry is evenly stirred and the washing power is improved.
[0038]
In addition, since the interval between the longitudinal side surfaces is relatively wider at intervals above the rotation shaft 46 than at intervals below the rotation shaft 46, the laundry rotating in the washing tub 41 has its weight. , It is easy to enter the narrow lower part, and the rotation is promoted at the lower part. As a result, the cleaning power is further improved.
Further, since the rotating shaft 46 is inclined with respect to the horizontal direction, when the laundry is agitated by the agitating blades 42, the laundry receives a horizontal leftward force from the agitating blades 42, and further moves through the washing tub 41. Stir further. As a result, the cleaning power is further improved.
[0039]
As described above, according to the present embodiment, the washing power can be improved by inclining the rotating shaft 46 or changing the width of the washing tub 41. Compared with the case where the reversal time of the stirring blade 42 is made different, the auxiliary washing device 40 can have a simple structure, and the cost does not increase.
The rotation shaft 46 is inclined with respect to the longitudinal side surface 41c, but is not limited to this. For example, the rotation shaft 46 may be inclined with respect to the longitudinal side surface 41b. If the portion of the longitudinal side surface 41b far from the stirring blade 42 is inclined with respect to the rotating shaft 46, the above-described inconvenience can be avoided. Furthermore, the portion of the rotating shaft 46 and the inclined longitudinal side surface 41b changes the rotation of the laundry, so that the washing power is further improved.
[0040]
Next, a second embodiment will be described.
FIG. 5 is a partially sectional front view of a sub-washing device 40 to which the washing machine according to the second embodiment of the present invention is applied. FIG. 6 is a left side sectional view of the sub-washing device 40 of FIG. In the present embodiment, the shape of the washing tub 41 and the state of attachment of the rotating shaft 46 to the washing tub 41 are different from those of the first embodiment. The same parts as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted, but the same applies to other embodiments described later.
[0041]
The details will be described below.
Longitudinal side surfaces of the washing tub 41 are arranged in parallel in a plan view. Further, the short side surfaces are also arranged in parallel in plan view. A pair of opposed long side surfaces 41b and 41c and a pair of opposed short side surfaces 41d and 41e of the washing tub 41 are provided to be inclined with respect to the bottom surface 41a. The inclination angle is set to several degrees, for example, two degrees with respect to the vertical direction, and the upper part in the washing tub 41 is wider than the lower part in the washing tub 41. That is, (the distance L2 between the upper portions of both long side surfaces)> (the distance L3 between the lower portions of both long side surfaces), (the distance L4 between the upper portions of both short side surfaces)> (the space L5 between the lower portions of both short side surfaces). is there.
[0042]
As described above, since the opposed sides of the washing tub 41 are inclined, the difference in the gap between the upper and lower sides of the side can be made larger than that of the washing tub 41 of the first embodiment. Therefore, the effect of improving the detergency by changing the width of the washing tub 41 can be more effectively obtained. Further, since the washing tub 41 has the same width at the front part and the rear part, the same washing effect can be obtained even if the rotation direction of the stirring blades 42 is different. Further, since the washing tub 41 has a planar shape closer to a rectangle than in the first embodiment, the space efficiency is much higher. Further, such a shape of the washing tub 41 having a narrow lower portion is preferable in that the washing tub 41 is easily manufactured and costs are reduced when the washing tub 41 is formed of a resin material such as plastic.
[0043]
Further, the rotation shaft 46 is attached so that its axis is parallel to the normal line of the attachment portion 41i of the longitudinal side surface 41b. On the other hand, the rotation shaft 46 is inclined with respect to the horizontal direction and the normal to the longitudinal side surface 41c. Therefore, there is an effect of improving the detergency described in the first embodiment.
Next, a third embodiment will be described.
[0044]
FIG. 7 is a partially sectional front view of a sub-washing device 40 to which a washing machine according to a third embodiment of the present invention is applied. FIG. 8 is a left side sectional view of the sub-washing device 40 of FIG. In the present embodiment, the fact that the ridge 41k is provided on each short side surface of the washing tub 41 and that the water channel 53 is provided so that the water supplied from the pipe 51 can be poured into the stirring blades 42 are described as follows. This is different from the first embodiment.
[0045]
The details will be described below.
Each side surface of the washing tub 41 is provided substantially perpendicular to the bottom surface 41a.
The stirring blade 42 is provided with the rotation shaft 46 perpendicular to the longitudinal side surface 41b.
A plurality of ridges 41k are formed on a pair of short side surfaces 41d and 41e of the washing tub 41 so as to extend vertically and have a semicircular cross section. The ridge 41k is formed from the upper portion of the washing tub 41 to the concave curved surface 41f so that the laundry in the washing tub 41 can follow along. The ridge 41k surely guides the laundry moving in the washing tub 41 in the up-down direction, and at this time, suppresses the movement in the left-right direction, so that the cloth tangling can be suppressed. Therefore, the laundry can be washed evenly. In addition, the convex line 41k may be a concave line.
[0046]
The water channel 53 is formed to extend vertically in the longitudinal side surface 41 b of the washing tub 41. The upper end of the water channel 53 is connected to the pipe 51. The lower end of the water channel 53 is open above the upper end of the disk 42a of the stirring blade 42 above the recess 41g. The washing water supplied from the pipe 51 passes through the water channel 53, and is uniformly poured into the upper end of the stirring blade 42 while spreading from the opening. Then, it flows downward on the front and back surfaces of the stirring blade 42 and the inside of the concave portion 41g (arrows F4 to F7). At this time, the detergent, sand, and the like attached to the stirring blade 42 and the concave portion 41g can be washed off.
[0047]
Further, an inclined surface 41m which is lowered toward the inside of the washing tub 41 is formed at the lower end of the concave portion 41g. Therefore, the sand or the like that has been washed down as described above can be reliably dropped to the lower portion in the washing tub 41 without collecting in the concave portion 41g.
As described above, since sand and the like can be easily removed, the usability is good.
Next, a fourth embodiment will be described.
[0048]
FIG. 9 is a partially sectional front view of a sub-washing device 40 to which a washing machine according to a fourth embodiment of the present invention is applied. FIG. 10 is a right side sectional view of the sub-washing device 40 of FIG. This embodiment is different from the first embodiment in that a spiral projection 72 is provided in the washing tub 41.
The details will be described below.
[0049]
Each side surface of the washing tub 41 is provided substantially perpendicular to the bottom surface 41a.
The stirring blade 42 is provided with the rotation shaft 46 perpendicular to the longitudinal side surface 41b.
The protrusion 72 is formed integrally with the longitudinal side surface 41c along the longitudinal side surface 41c. The projections 72 are formed in a plurality, for example, at four locations. Each projection 72 extends in a curved shape from near the center of the longitudinal side surface 41c toward the peripheral edge of the longitudinal side surface 41c. The direction in which each projection 72 extends is inclined with respect to the direction extending radially from the center of the longitudinal side surface 41c, and the inclination angle is smaller toward the center, and each projection 72 is inclined at the same angle. Each projection 72 has a concave side surface portion 72a on the center side of the curve that can move more toward the center when the laundry is along, and a convex side surface on the side farther from the center of the curve that can move away from the center when the laundry follows. And a portion 72b.
[0050]
Next, the operation will be described. For example, when the laundry in the washing tub 41 is stirred and rotated counterclockwise in FIG. 10, the laundry hits the projection 72 and moves toward the center along the concave side surface portion 72 a of the spiral projection 72. Since it can be performed (arrow M1), it is washed at the center of the washing tub 41 with strong stirring power, and as a result, the cleaning power is further improved. When the laundry is rotated clockwise in FIG. 10, the laundry can move away from the center along the convex side portion 72b of the projection 72 (arrow M2), and is dispersed in the washing tub 41 and loosened. Easy and evenly washed.
[0051]
In addition, since the protrusion 72 is curved, the laundry can smoothly follow the laundry, and since it is convex, the laundry can easily follow the laundry.
Next, a fifth embodiment will be described.
FIG. 11 is a left side sectional view of an auxiliary washing device 40 to which a washing machine according to a fifth embodiment of the present invention is applied. In the present embodiment, the shape of the projection 42b of the stirring blade 42 is different from that of the fourth embodiment.
[0052]
The details will be described below.
The projections 42 b are formed in a plurality of, for example, four locations, extending in a spiral shape from the vicinity of the center of the stirring blade 42 toward the peripheral edge in a spiral shape having substantially the same shape as the projections 72. Each protruding portion 42b has a concave side portion 42m on the center side of the curve that can move closer to the center when the laundry follows, and a convex portion on the side farther from the center of the curve that can move away from the center when the laundry follows. And a side surface portion 42n. In addition, in FIG. 11, the opposing protrusion 72 is shown by the dashed line.
[0053]
Next, the operation will be described.
When the stirring blade 42 rotates, the protrusion 42b not only pushes and moves the laundry and the washing water in the traveling direction, but also moves the laundry and the washing water along the protrusion 42b. It can be moved to the center or away from the center of the washing tub 41. For example, when the stirring blade 42 rotates clockwise in FIG. 11 (arrow M3), the laundry approaching the stirring blade 42 moves toward the center along the concave side portion 42m (arrow M4). At the same time, the laundry approaching the longitudinal side surface 41c moves toward the center along the concave side surface portion 72a of the projection 72 (arrow M5). Therefore, the laundry is washed in the central portion of the washing tub 41 having strong stirring power, and as a result, the cleaning power is further improved.
[0054]
Further, when the stirring blade 42 rotates in the opposite direction, the laundry can move away from the center along the convex side portion 42n of the protrusion 42b and the convex side portion 72b of the protrusion 72 in the washing tub 41. Therefore, it is dispersed in the washing tub 41, is easily loosened, and is washed evenly.
In this way, the laundry is rubbed with the reversal of the stirring blades 42 and is loosened toward the center or away.
[0055]
Next, a sixth embodiment will be described.
FIG. 12 is a left side sectional view of an auxiliary washing device 40 to which the washing machine according to the sixth embodiment of the present invention is applied. In the present embodiment, the shape of the projection 42b of the stirring blade 42 is different from that of the fifth embodiment.
The details will be described below.
[0056]
The projection 42b is formed so that the direction of the spiral is opposite to the shape of the projection 42b shown in FIG.
Next, the operation will be specifically described.
When the stirring blade 42 rotates clockwise in FIG. 12 (arrow M6), the laundry approaching the stirring blade 42 moves away from the center along the convex side portion 42n (arrow M7). At the same time, the laundry approaching the longitudinal side surface 41c moves toward the center along the concave side surface portion 72a of the projection 72 (arrow M8). Therefore, the laundry is well stirred while being twisted clockwise in the traveling direction.
[0057]
When the stirring blades 42 rotate in the opposite direction, the laundry is rotated clockwise in the washing tub 41 along the concave side portion 42m of the protrusion 42b and the convex side portion 72b of the protrusion 72. While being twisted (the twisting is canceled because the traveling direction is opposite), it is well stirred. As a result, the cleaning power is improved.
Note that the protrusion 72 may be along the longitudinal side surface in the washing tub 41. For example, as shown as the protrusion 42b in the fifth and sixth embodiments, the same as the protrusion 72 may be formed on the stirring blade 42.
[0058]
Next, a seventh embodiment will be described.
FIG. 13 is a left side view of the stirring blade 42 according to the seventh embodiment of the present invention. FIG. 14 is a front sectional view of the stirring blade 42 of FIG. The present embodiment is different from the first embodiment in that the stirring blade 42 includes a water splash control rib 42o.
[0059]
The water splash regulating rib 42o is formed to protrude inward in the washing tub 41 in the axial direction along the outer peripheral portion of the disk 42a of the stirring blade 42. When the agitating blades 42 rotate and the washing water jumps out in the radial direction due to the centrifugal force, the washing water hits the water skipping control rib 42o. (See arrow in FIG. 14). As a result, water splash can be suppressed. The water splash control rib 42o is formed on the entire circumference of the disk 42a closer to the outer circumference than the protrusion 42b. Therefore, water splash can be suppressed regardless of the rotation angle of the stirring blade 42.
[0060]
As described above, the water splash can be suppressed, so that the usability is improved. In particular, in a washing machine in which the stirring blades 42 are on the side surface of the washing tub 41, if a part of the stirring blades 42 is on the water surface, water splashing may occur, which is preferable for improvement in usability.
As shown in the right side view of FIG. 15, the water splash control rib 42o may be formed continuously with the protrusion 42b, or may be formed on a part of the outer peripheral portion of the disk 42a. I do not care. FIG. 16 is a view of the protrusion 42b in FIG. The water splash regulating rib 42o is formed such that the end face 42c of the projection 42b extends along the outer periphery of the stirring blade 42.
[0061]
Further, the water splash control rib 42o may be formed separately from the stirring blade 42 and attached to the stirring blade 42.
The embodiments described above can be combined with each other. For example, the washing tub 41 of the second embodiment may be provided with a stirring blade 42 obliquely attached to the recess 41g shown in the first embodiment. Further, the ridge 41k shown in the third embodiment may be provided in the washing tub 41 of the first and second embodiments, or the agitating blade 42 of the The cleaning water may be guided upward. Further, the fourth to sixth embodiments may be implemented in the sub-washing device 40 according to the first to third embodiments. In particular, when the washing tub 41 of the sixth embodiment is provided with the ridge 42k shown in the third embodiment, the laundry intersects with the ridge 42k when being twisted. To move and rub on a larger surface to improve detergency. Further, in the first to third embodiments, the stirring blade 42 may have the spiral projection 42b shown in the fifth embodiment. In this case, the stirring blade 42 is compared with the fourth embodiment. The same effect can be obtained while simplifying the washing tub 41. Further, the water splash control rib 42o shown in the seventh embodiment may be applied to the stirring blade 42 of each of the first to sixth embodiments.
[0062]
In addition, various design changes can be made without changing the gist of the present invention.
[0063]
【The invention's effect】
According to the invention of claim 1,The water splash regulating rib hits the washing water that jumps out with the rotation of the stirring blade and changes the direction in which the washing water flies, so that the water splash can be suppressed.
[Brief description of the drawings]
FIG. 1 is a front sectional view of a schematic configuration of a two-tub washing machine in which a washing machine according to a first embodiment of the present invention is applied to a sub-washing device.
FIG. 2 is a partially sectional left side view of the sub-washing device shown in FIG.
FIG. 3 is a partially sectional front view of the sub-washing device shown in FIG. 1;
FIG. 4 is a partially sectional plan view of the sub-washing device shown in FIG. 1;
FIG. 5 is a partially sectional front view of a sub-washing device 40 to which a washing machine according to a second embodiment of the present invention is applied.
FIG. 6 is a left side sectional view of the auxiliary washing device shown in FIG. 5;
FIG. 7 is a partially sectional front view of a sub-washing device to which a washing machine according to a third embodiment of the present invention is applied.
8 is a left side sectional view of the sub-washing device shown in FIG. 7;
FIG. 9 is a partially sectional front view of a sub-washing device to which a washing machine according to a fourth embodiment of the present invention is applied.
FIG. 10 is a right side sectional view of the sub-washing device shown in FIG. 9;
FIG. 11 is a left side sectional view of a sub-washing device to which a washing machine according to a fifth embodiment of the present invention is applied.
FIG. 12 is a left side sectional view of a sub-washing device to which a washing machine according to a sixth embodiment of the present invention is applied.
FIG. 13 is a left side view of a stirring blade of a washing machine according to a seventh embodiment of the present invention.
14 is a front sectional view of the stirring blade shown in FIG.
FIG. 15 is a left side view of a stirring blade of a washing machine according to another embodiment of the present invention.
FIG. 16 is a view of the stirring blade shown in FIG.
[Explanation of symbols]
41 washing tub
41b, 41c Long side
41d, 41e short side
41j step
42 stirring blade
42a disk
42b protrusion
42o Water splash control rib
46 Rotation axis (center axis)
L2, L3 interval (interval between longitudinal side surfaces)
VL normal
72 protrusion

Claims (1)

A washing tub for washing, having a pair of long sides and a pair of short sides, having a substantially rectangular planar shape defined by each side, containing washing water and laundry,
Washing, provided on a longitudinal side surface in a washing tub such that a central axis thereof intersects with the longitudinal side surface, and having a disk that rotates or rotates about the central axis, and a protrusion protruding from the disk surface. With stirring blades for stirring water and laundry,
The agitating blade protrudes into the washing tub provided along the outer periphery thereof, and when the agitating blade rotates and the washing water is subjected to centrifugal force and rushes out in the radial direction, water splashing control is performed. A washing machine comprising a rib .

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