JP2017189210A - Washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a washing machine which can suitably drop laundry which has floated upward by a centrifugal force during dewatering into a washing and dewatering tub, which improves dewatering performance and which suitably suppresses damage of the laundry.SOLUTION: A washing machine includes: an outer tub 6 for storing water inside; a washing and dewatering tub 3 which is supported rotatably by the outer tub 6, and in which laundry is stored; a motor 22 for rotationally driving the washing and dewatering tub 3; and an annular tub cover 20 mounted on an upper end part of the outer tub 6. At the tub cover 20, a restriction protrusion 200 is provided which protrudes to the inside of the tub cover 20, and which restricts the laundry W stored in the washing and dewatering tub 3 riding over the tub cover 20 during a dewatering operation.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a washing machine for washing clothes and the like.

  A vertical washing machine as a washing machine includes a washing / dehydrating tub equipped with a balance ring, an outer tub that accommodates the washing / dehydrating tub, and a tub cover attached to the upper end of the outer tub. Are known.

  Such a washing machine includes a series of processes such as a washing process, a rinsing process, and a dehydrating process as an automatic operation course. Of these, in the dehydration process, the laundry and dewatering tub is rotated and the laundry such as clothes is dewatered by centrifugal force. However, there is a risk that the laundry will be lifted upward by the centrifugal force and run on the tub cover. there were. If the laundry rides on the tank cover, the dehydration may be insufficient, or the laundry may be damaged, for example, the laundry may fall over the tank cover.

As a washing machine that suppresses the running of the laundry, the one disclosed in Patent Document 1 is known.
In the washing machine of Patent Document 1, the inner wall of the balance ring is extended upward to form a rib, the height of the rib is set to be substantially the same as the inner peripheral surface of the tank cover, and the height of the outer peripheral rib of the tank cover is set. It is set lower than this.

Japanese Patent Application Laid-Open No. 08-309079

  However, in the washing machine of Patent Document 1, it is difficult to suitably suppress the lifting of the laundry when the amount of the laundry stored in the washing and dewatering tub is large, and the laundry still remains on the tub cover. There was a risk of getting on.

  Therefore, an object of the present invention is to allow the laundry that has been lifted upward by the centrifugal force during dehydration to be dropped into the washing and dehydration tub, and to improve the dehydration performance and to appropriately prevent damage to the laundry. To provide a washing machine.

  The present invention includes an outer tub that stores water therein, a washing / dehydration tub that is rotatably supported in the outer tub and that stores laundry, a motor that rotationally drives the washing / dehydration tub, and the outer tub An annular tank cover attached to the upper end of the tank, and the tank cover protrudes inside the tank cover, and the laundry stored in the washing and dehydrating tank is placed on the tank cover during the dehydration operation. It is characterized by the fact that a restricting protrusion for restricting the ride is provided.

  According to the present invention, the laundry that has been lifted upward by the centrifugal force at the time of dehydration can be suitably dropped into the washing and dewatering tub, and the washing machine can suitably improve the dewatering performance and suppress damage to the laundry. Can be provided.

It is a figure which shows the internal structure of the washing machine of 1st Embodiment of this invention. It is a perspective view which shows an outer frame and a washing and dewatering tank. It is a top view which shows a tank cover. It is a figure which shows a control protrusion, (a) is an enlarged plan view, (b) is an enlarged perspective view. FIG. 4 is a partial cross-sectional view of an outer tub and a washing / dehydrating tub corresponding to the line AA in FIG. 3. It is a figure which shows the mode of the laundry when there is much quantity of the laundry accommodated in the washing and dehydration tank, (a) is a schematic diagram which shows the state of the laundry after a rinse, for example, (b) is at the time of dehydration It is a schematic diagram which shows a mode when the laundry gets on the tank cover. (A)-(c) is an effect | action explanatory drawing of a control protrusion. It is a top view which shows the washing tub (tank cover) of the washing machine of 2nd Embodiment of this invention. (A) (b) is a figure which shows the modification of a control protrusion.

  Next, a washing machine according to an embodiment of the present invention will be described in detail with reference to the drawings as appropriate. In the following description, an example in which the present invention is applied to a vertical fully automatic washing machine having washing, rinsing, and dewatering functions will be described. In each embodiment, the same parts are denoted by the same reference numerals, and redundant description is omitted. In the following description, the front / rear and up / down directions are based on the front / rear and up / down directions shown in FIG.

(First embodiment)
As shown in FIG. 1, the washing machine 1 includes an outer frame 5 made of a substantially box-shaped steel plate that encloses an internal mechanism. A synthetic resin outer tub 6 in which the washing and dewatering tub 3 is rotatably installed is suspended in the outer frame 5 by a vibration isolator 4. A top cover 9 made of synthetic resin is provided on the top of the outer frame 5. The upper surface cover 9 is provided with a control unit 7 as a control means and an electromagnetic water supply valve 16 (water supply means) as a water supply means. A base member 10 made of synthetic resin is provided at the lower part of the outer frame 5.

  Four leg portions 10a are inserted into the four corners of the base member 10, and the four leg portions 10a directly contact the floor surface to support the main body of the washing machine 1 (in FIG. 1, 2). Only the location is shown). In addition, a hose outlet 11 a for pulling out the drainage hose 11 is provided at the rear part of the base member 10.

  At the center of the upper surface cover 9, there is a laundry input port 9 a through which the laundry W such as clothes is taken in and out. The top cover 9 is provided with a lid 9b for opening and closing the laundry input port 9a. The electrical components provided in the upper surface cover 9 are provided at two locations on the front side and the rear side of the upper surface cover 9, and are protected by a front protective cover 9c on the front rear surface and a rear protective cover 9d on the rear rear surface. . In a space formed by the upper surface cover 9 and the front protective cover 9c, a power switch 13, an input switch unit 14 for operating each process such as washing, a progress display unit 14a for displaying the progress of each process, etc. Is provided.

  The control unit 7, the pressure-sensitive water level sensor 15 for detecting the water level, the electromagnetic water supply valve 16, and the like are accommodated in a space portion constituted by the upper surface cover 9 and the rear protective cover 9d. Note that the control unit 7 may be disposed in either the space formed by the front protective cover 9c or the space formed by the rear protective cover 9d. A water supply hose 17 connected to a water tap is attached to the rear outside of the top cover 9, and the other end is connected to an electromagnetic water supply valve 16.

  The outer tub 6 has a substantially cylindrical shape with a bottom. The vibration isolator 4 is made of a spring or elastic rubber and suspends and supports the outer tub 6 from the upper end of the outer frame 5.

  The outer tub 6 is made of synthetic resin, and an air trap 6a for detecting the water level is formed on the lower wall surface. The water level of the washing water in the outer tub 6 is detected from the air trap 6a through the air tube 6b by a pressure-sensitive water level sensor 15 which is a water level detecting means. When performing the washing process or the like, the electromagnetic water supply valve 16 is opened by the command of the control unit 7, and the washing water is supplied into the outer tub 6. The water level sensor 15 detects that the water level has reached a predetermined level, and the electromagnetic water supply valve 16 is closed according to a command from the control unit 7 to stop water supply.

  An outer tank drain 6c is provided at the bottom of the outer tank 6. A drain valve 18 and a drain hose 11 which are drain devices are connected to the outer tank drain 6c. When performing a dehydration process etc., the drain valve 18 is opened by the command of the control unit 7. The washing water in the outer tub 6 is drained from the other end of the drain hose 11 to the outside of the washing machine 1.

  A tank cover 20 is attached to the upper surface of the outer tank 6. The tank cover 20 maintains the rigidity of the entire outer tub 6 and serves to cover a gap formed between the inner peripheral surface of the outer tub 6 and the outer peripheral surface of the washing and dewatering tub 3. The tank cover 20 prevents laundry or the like from entering the gap. As shown in FIGS. 2 and 3, a regulation protrusion 200 is provided inside the tank cover 20. The restricting protrusion 200 pushes the laundry back onto the washing / dehydrating tub 3 when the laundry rides on the tub cover 20 during the dehydrating operation. Details of the restriction protrusion 200 will be described later.

  As shown in FIG. 2, a rubber bellows tube 20 e is connected to the tank cover 20. The bellows tube 20e connects the outer tub 6 which is displaced by vibration and a fixed side (water injection hose on the upper surface cover 9 side, etc.). The connection port 20f of the bellows tube 20e is formed at a place where there is no hindrance for putting in and out the laundry on the rear side of the tank cover 20.

  As shown in FIG. 1, a driving motor 22 and a speed reduction mechanism 24 that decelerates the driving motor 22 are attached to the outer side of the bottom of the outer tub 6 via a mounting base 21 made of steel plate. An induction motor or a synchronous motor is used for the drive motor 22. The drive mechanism may drive the stirring blade 2 via the V-belt (not shown) and the speed reduction mechanism 24 by the drive motor 22, and the drive shaft of the drive motor 22 is the same as the speed reduction mechanism 24. It may be configured on an axis.

  The speed reduction mechanism 24 includes an electrically operated clutch mechanism 24a that switches between a washing operation and a dewatering operation and a planetary gear speed reduction mechanism 24b. An agitation mode in which the washing and dewatering tub 3 is stationary and the agitation blade 2 is rotated left and right with the electric operation clutch mechanism 24a stationary, and a dehydration mode in which the washing and dewatering tub 3 and the agitation blade 2 are integrally rotated in the same direction. Can be selected.

  The washing and dewatering tub 3 includes a body portion (body plate) 31, a fluid balancer 32, and a bottom plate 33. The body portion 31 is formed of a stainless steel plate in a substantially cylindrical shape, and has a plurality of dewatering holes 31a for separating and discharging the washing water contained in the laundry W from the laundry W by centrifugal force on the peripheral wall. ing.

  The fluid balancer 32 is provided on the upper edge portion of the body portion 31. The fluid balancer 32 has a function of suppressing the vibration of the outer tub 6 due to the bias of the laundry W by the balance fluid moving in the direction opposite to the bias of the laundry W. The fluid balancer 32 is arranged so that the inner peripheral surface 32a on the inner diameter side protrudes radially inward from the peripheral wall of the body portion 31 (see FIG. 3).

  The bottom plate 33 is formed so as to have a cross-sectional shape curved upward. The bottom plate 33 is fixed to the lower end portion of the body portion 31. The bottom plate 33 includes a plurality of water inlets (not shown) that communicate with the outer tub 6.

  A rotatable stirring blade 2 is provided on the inner peripheral side of the bottom plate 33 at the bottom of the washing and dewatering tub 3. The stirring blade 2 has a large diameter that covers most of the bottom plate 33, is curved upward so that the peripheral edge is pushed up, is formed in a dish-like shape, and rotates while supporting the laundry W. It has a configuration like this.

  Next, the regulation protrusion 200 will be described. As shown in FIG. 3, the restriction protrusion 200 is integrally provided on the inner surface 20 g of the tank cover 20. The restricting protrusion 200 protrudes from the inner surface 20 g toward the radially inner side of the tank cover 20, and the protruded tip 208 has an inner peripheral surface 32 a of the fluid balancer 32 of the washing and dewatering tank 3 as shown in FIG. 5. It is set to be inside.

As shown in FIGS. 4 and 5, the restriction projection 200 includes a bottom wall 201, an edge wall 202 that rises from the edge of the bottom wall 201, and a reinforcing rib 203. The bottom wall portion 201, the edge wall portion 202, and the rib 203 are all formed in a thin plate shape. Thereby, weight reduction of the control protrusion 200 is achieved.
The bottom wall portion 201 projects radially inward from the inner surface 20 g of the tank cover 20, and includes a flat lower surface 201 a (see FIG. 5) that faces the bottom plate 33 (bottom portion) of the washing and dewatering tank 3. The lower surface 201a is inclined obliquely upward with a predetermined angle with respect to the horizontal plane n. For example, the angle θ is preferably set in a range of 5 degrees to 20 degrees, and more preferably set to an angle of around 10 degrees. In addition, you may form the lower surface 201a in parallel with the horizontal surface n, without making it incline. The bottom wall 201 is formed with a water drain hole 201b. Two holes 201b are formed across the rib 203 (see FIGS. 4A and 4B). In addition, the upper surface of the bottom wall part 201 is inclined so as to descend toward the hole part 201b.

  As shown in FIG. 4A, the bottom wall portion 201 includes an inclined portion 204 that protrudes inwardly in the rotational direction of the washing and dewatering tub 3 during dehydration (in the direction of the white arrow, see FIG. 3). , And a bulging portion 205 that is continuous with the inclined portion 204 and protrudes in a substantially arc shape to the inside of the inclined portion 204.

  The inclined portion 204 is formed so that the amount of protrusion gradually increases toward the inside of the tank cover 20 in the rotational direction (so that it gradually becomes wider). As shown in FIG. 4A, the edge portion of the inclined portion 204 is formed linearly in plan view. Thereby, the edge wall part 202 rising from the edge part of the inclined part 204 is also formed linearly in a plan view. Such an inclined portion 204 has a role (returns) of gradually pushing the laundry into the inside of the tank cover 20 (to the inside in the radial direction of the washing and dewatering tank 3) when the laundry rides on the upper surface of the tank cover 20 during dehydration. Role).

As shown in FIGS. 4 (a) and 4 (b), the bulging portion 205 is formed so that the amount of protrusion suddenly increases toward the inner side of the tank cover 20 continuously with the inclined portion 204 (so as to widen rapidly). To be formed. As shown in FIG. 4A, the edge of the bulging portion 205 is formed such that the upstream side 205a in the rotational direction is formed in a substantially arc shape in plan view, and the downstream side 205b is formed in a straight shape in plan view. Yes. Accordingly, the edge wall portion 202 rising from the edge portion of the bulging portion 205 is also formed in a substantially arc shape in a plan view and a linear shape in a plan view.
In addition, the corner part 206 of the inclined part 204 and the bulging part 205 is formed in a round shape.

  Such a bulging portion 205 comes into contact with the laundry gradually pushed into the inside of the tub cover 20 by the inclined portion 204 on the upstream side when the laundry rides on the upper surface 20k of the tub cover 20 during dehydration. The laundry is pushed back toward the inside of the tank cover 20.

  The rib 203 extends in the radial direction so as to cross between the inner surface of the tank cover 20 and the top of the bulging portion 205, and reinforces the regulation protrusion 200.

  As shown in FIG. 3, the restriction protrusion 200 as described above is disposed in a portion (region) covered from above by the lid body 9 b when the lid body 9 b of the upper surface cover 9 is opened. That is, it is formed in a place where there is no hindrance to taking in and out the laundry. In addition, the restricting protrusion 200 is disposed at a position shifted to the upstream side of the bellows tube 20e (connection port 20f) in the region (a position shifted in the direction opposite to the rotation direction with respect to the connection port 20f). .

  Next, the effect | action of the control protrusion 200 is demonstrated. For example, when a large amount of laundry W is put in the washing and dewatering tub 3, after the washing process and the rinsing process are finished, the laundry W rises in a mountain shape as shown in FIG. Sometimes. FIG. 6A shows a state in which a part of the laundry W is raised upward beyond the tub cover 20. When the operation process of the washing machine 1 enters the dehydration process from the raised state as described above, the laundry W that protrudes upward is caused by the centrifugal force generated by the rotation of the washing and dewatering tub 3 as shown in FIG. A part of the laundry W may stick to the body 31 side of the washing / dehydrating tub 3 and float on the washing / dehydrating tub 3 and ride on the upper surface 20k of the tub cover 20.

  A part of the laundry W riding on the upper surface 20k of the tank cover 20 moves in the rotational direction on the upper surface 20k of the tank cover 20 while receiving centrifugal force as shown in FIG. 200 is approached. If it does so, the laundry W will contact | abut to the inclination part 204 of the control protrusion 200. FIG. Since the inclined portion 204 is formed so that the protruding amount gradually increases toward the inside of the tank cover 20, the process in which the laundry W moves in the rotational direction along the edge wall portion 202 of the inclined portion 204. Then, the tank cover 20 is gradually pushed inward.

  Thereafter, when the laundry W reaches the bulging portion 205 from the inclined portion 204, the laundry W comes into contact with the substantially arc-shaped edge wall portion 202 of the bulging portion 205, as shown in FIG. The laundry W is suddenly pushed into the inner side of the inner peripheral surface 32a of the fluid balancer 32 of the washing and dewatering tub 3. Thereby, as shown in FIG.7 (c), the laundry W which has ridden on the tank cover 20 is dropped into the tank cover 20 at a stretch.

  In addition, since the lower surface 201a of the restricting protrusion 200 is formed obliquely upward inward with an angle θ, when the laundry W abuts on the lower surface 201a when the laundry W passes through the restricting protrusion 200, the lower surface 201a. As a result, the laundry W is pushed downward. Thereby, the laundry W is dropped into the inside of the washing and dewatering tub 3.

  According to the washing machine 1 of the present embodiment described above, even when a part of the laundry W that is lifted upward by the centrifugal force during dehydration rides on the upper surface 20k of the tub cover 20, the action of the restricting protrusion 200 is achieved. Thus, the laundry W can be dropped into the inside of the washing and dewatering tub 3. Therefore, the laundry W is suitably dehydrated, and the dewatering performance can be improved. Further, since the laundry W riding on the upper surface 20k of the tank cover 20 can be dropped into the inside of the washing and dehydrating tank 3, the laundry W jumps out of the outer tank 6, or the outer tank 6 and the fluid balancer 32 It is possible to suitably prevent a phenomenon such as the laundry W biting in between. Therefore, damage to the laundry W can be suitably suppressed.

  Further, the lower surface 201a of the restricting protrusion 200 is inclined obliquely upward with a predetermined angle θ with respect to the horizontal plane n. Thereby, when the laundry W passes the control protrusion 200, it is suitably pushed down. Therefore, the laundry W can be suitably dropped into the inside of the washing and dewatering tub 3 in combination with the effect of dropping the laundry W due to the action of the bulging portion 205 of the restricting protrusion 200.

  In addition, since the restricting protrusion 200 is disposed in a portion (region) covered from above by the lid body 9b, the dewatering performance is improved and the laundry W is damaged without causing any troubles in and out of the laundry W. Can be suitably suppressed.

  Further, since the restricting projection 200 is provided at a position deviated in the direction opposite to the rotation direction at the time of dewatering of the washing and dewatering tub 3 with respect to the connection port 20f of the bellows tube 20e, the restricting protrusion 200 rides on the tub cover 20. A part of the laundry W can be dropped into the washing and dewatering tub 3 on the front side of the bellows tube 20e. Therefore, damage to the bellows tube 20e and the laundry W due to a part of the laundry W riding on the tank cover 20 hitting the bellows tube 20e can be suitably suppressed.

  Further, since the regulation protrusion 200 includes an inclined portion 204 and a bulging portion 205 that is continuous with the inclined portion 204, the laundry W is washed and removed step by step in the rotational direction of the washing and dehydrating tub 3. The inside of the water tank 3 can be pushed in, and the certainty of dropping of the laundry W can be improved.

(Second Embodiment)
The dryer according to the second embodiment will be described with reference to FIG. The present embodiment is different from the first embodiment in that the regulation protrusion 200A is formed in an arc shape along the circumferential direction of the tank cover 20.

  The bottom wall 201 of the restricting protrusion 200A includes an inclined portion 204 and a bulging portion 205A. The bulging portion 205 is formed in an arc shape longer than that of the first embodiment along the inner surface 20 g of the tank cover 20. The bulging portion 205 </ b> A is formed so that the amount of protrusion suddenly increases toward the inner side of the tank cover 20 following the inclined portion 204 (so as to increase rapidly). As for the edge of the bulging portion 205A, the upstream side 205a in the rotational direction is formed in a substantially arc shape in a plan view, the downstream side 205b is formed in a straight shape in a plan view, and the intermediate portion 205c is formed in a tank view in a plan view. It is formed in a circular arc shape along the inner surface 20g. Thereby, the edge wall part 202 which stands | starts up from the edge of the bulging part 205 is also made into the shape which follows this.

  Also in the present embodiment, the restricting protrusion 200A is disposed at a position shifted in the opposite direction to the rotation direction of the bellows tube 20e (connection port 20f), that is, at a position on the upstream side in the rotation direction with respect to the connection port 20f. Has been.

  According to the washing machine 1 of this embodiment, the effect similar to the effect demonstrated in the said embodiment is acquired. Further, since the bulging portion 205A of the restricting projection 200A is formed in a long arc shape, when a part of the laundry W that has been lifted upward by centrifugal force during dehydration rides on the upper surface 20k of the tub cover 20 In addition, the laundry W can be more reliably dropped into the inside of the washing and dewatering tub 3 by the action of the restricting protrusion 200A.

In addition, this invention is not limited to above-described embodiment, In the range which does not deviate from the meaning of this invention, it can change suitably.
For example, as shown in FIG. 9A, a rib 210 extending in the rotational direction may be provided on the lower surface 201a of the bottom wall portion 201 of the restricting protrusions 200 and 200A. By providing the rib 210, the rigidity of the restricting protrusions 200 and 200A can be increased. Also, the laundry W can be suitably moved along the rib 210 in the rotational direction, and a part of the laundry W riding on the upper surface 20k of the tub cover 20 in the course of the movement is washed and dehydrated tub 3 It can drop in suitably inside.

  Further, as shown in FIG. 9B, the lower surface 201a of the bottom wall 201 of the restricting projection 200 may be inclined downward in the rotational direction. With such a configuration, when a part of the laundry W rides on the upper surface 20k of the tub cover 20, the laundry W moves in the rotational direction in the rotation direction of the tub cover 20 in the process of moving the regulating protrusion 200 in the rotation direction. The laundry W is pushed downward by the lower surface 201a. Therefore, the laundry W can be dropped into the washing / dehydrating tub 3 more suitably.

  Further, a plurality of regulating protrusions 200 may be provided on the tank cover 20. In this case, the amount of protrusion of the bulging portion 205 may be made different between the restricting protrusions 200.

DESCRIPTION OF SYMBOLS 1 Washing machine 6 Outer tub 3 Washing / dehydration tub 9a Laundry input port 9b Lid 22 Driving motor (motor)
20 Tank cover 20e Bellows tube 20f Connection port 33 Bottom plate (bottom)
200 restriction protrusion 200A restriction protrusion 201a lower surface 204 inclined part 205 bulge part W laundry

Claims (4)

An outer tank for storing water inside,
A washing and dehydrating tub that is rotatably supported in the outer tub and in which the laundry is stored,
A motor for rotationally driving the washing and dewatering tub;
An annular tank cover attached to the upper end of the outer tank,
The tank cover is provided with a regulation protrusion that protrudes inside the tank cover and regulates the laundry stored in the washing and dewatering tank on the tank cover during the dehydration operation. And a washing machine.   The said control protrusion is provided with the lower surface which opposes the bottom part of the said washing | cleaning and dehydration tank, The said lower surface is inclined upward toward the radial inside of the said tank cover. The washing machine as described in. A lid that opens and closes a laundry input port to the washing and dewatering tub,
The lid body covers at least a part of the tub cover from above in a state where the laundry input port is opened,
The washing machine according to claim 1, wherein the restricting protrusion is disposed in a portion covered from above by the lid.   The restricting protrusion is continuous with the inclined portion where the amount of protrusion gradually increases toward the inner side in the radial direction of the tank cover in the rotation direction during the dehydration of the washing and dewatering tank, and the tank cover The washing machine according to claim 1, further comprising: a bulging portion in which a protruding amount suddenly increases toward the radially inner side.

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