JP2017221356A - Washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a washing machine capable of reducing noise while securing assemblability.SOLUTION: A washing machine includes: a washing tub for storing clothing; an outer frame for including the washing tub; and a base member mounted on a bottom part of the outer frame, and having a space substantially at the center position. At a lower part of the base member, a sound insulation plate is mounted so as to cover the space. The sound insulation plate includes a positioning rib provided at the rear side and a fixing claw fixed with the base member.SELECTED DRAWING: Figure 11

Description

  The present invention relates to a washing machine.

  Japanese Patent Application Laid-Open No. 11-156090 (Patent Document 1) includes a protective cover 4 that shields the periphery of the gap between the outer frame lower part 2 and the floor surface of the washing machine body 1 and prevents the intrusion of the human body. 4 is configured by integrally connecting a plurality of shielding plate portions 5a and 5b corresponding to the gaps in the lower portion 2 of the outer frame 2 of the washing machine body 1 at the hinge portion 7 so that the hinge portion 7 has flexibility. It is written. "

JP 11-156090 A

  However, as described in Patent Document 1, there is a large space between the outer frame lower portion 2 and the floor surface, so that noise during operation becomes a problem.

  Here, it is conceivable to insert a sound insulation board under the outer frame lower part 2, but when installing the washing machine in the home, it is necessary to insert the sound insulation board after turning the drainage hose, The assembling property of the installation board to the washing machine main body is a problem.

  The present invention solves the above-described conventional problems, and an object thereof is to provide a washing machine capable of reducing noise while ensuring assemblability.

  The present invention includes, as an example, a washing tub that houses clothing, an outer frame that contains the washing tub, and a base member that is attached to the bottom of the outer frame and has a space at a substantially central position. A sound insulating plate is attached to a lower portion of the base member so as to cover the space, and the sound insulating plate includes a positioning rib provided on the rear side and a fixing claw for fixing to the base member. And

  ADVANTAGE OF THE INVENTION According to this invention, the washing machine which can reduce noise, ensuring assembly property can be provided.

It is the schematic which shows the internal structure of the washing machine of this embodiment. It is a longitudinal cross-sectional view which shows the internal structure of the washing tub which concerns on this embodiment. It is sectional drawing which shows the inside of the washing tub from which the stirring blade was removed. It is a perspective view which shows the back side of a stirring blade. It is sectional drawing which shows the positional relationship of the inlet_port | entrance of a circulation water channel, and a radial direction rib. It is a perspective view which shows the back side of the stirring blade as a comparative example. The flow of the water by the circumferential direction rib is shown, (a) is this embodiment, (b) is a comparative example. The image figure of shower diffusion is shown, (a) is this embodiment, (b) is a comparative example. It is the perspective view which looked at the base member 10 from the bottom part side. FIG. 5 is a view in which a sound insulating plate 140 is provided at the bottom of the base member 10. It is a perspective view at the time of seeing the sound insulation board 140 from upper direction. FIG. 5 is a view showing a state in which a fixing claw 143 is fitted with a base member 10. It is an enlarged view of the area | region A of FIG. FIG. 6 is an enlarged view of the vicinity of a pressing rib 146. It is an enlarged view of the fixed claw 143.

  Hereinafter, modes for carrying out the present invention (hereinafter referred to as “embodiments”) will be described in detail with reference to the drawings as appropriate. In the following, a washing machine (so-called fully automatic washing machine) that can perform washing, rinsing, and dehydrating will be described as an example. However, a washing machine that can perform washing, rinsing, dehydrating and drying (so-called washing machine) The present invention can also be applied to a vertical washer / dryer.

  FIG. 1 is a schematic view showing the internal configuration of the washing machine of the present embodiment.

  As shown in FIG. 1, a washing machine 1 circulates a washing tub 2, a stirring blade 3 provided at the bottom of the washing tub 2, and washing water in an outer frame (housing) 5 made of a substantially box-shaped steel plate. And a circulating water channel R.

  The washing tub 2 has a bottomed cylindrical shape, and includes a body plate 21, a bottom plate 22 provided on the bottom of the body plate 21, a balance ring 23 provided on the top of the body plate 21, and the like.

  The stirring blade 3 (also referred to as a pulsating blade or a pulsator) is formed in a substantially disk shape and is provided at the bottom of the washing tub 2. The stirring blade 3 is rotatably supported by the driving device 6. Accordingly, the washing water can be stirred together with the laundry 12 by rotating the stirring blade 3 at the time of washing or rinsing.

  The circulation channel R is provided on the wall surface of the washing tub 2, and the washing water (water) is pushed up from the bottom of the washing tub 2 to the top of the washing tub 2 by the rotation of the stirring blade 3, and returned to the inside of the washing tub 2. It is configured to circulate. Circulating water channels R are provided at a plurality of locations on the wall surface of the washing tub 2.

  The washing machine 1 also includes an outer tub 7 that coaxially encloses the washing tub 2 in the frame of the outer frame 5. The outer tub 7 is made of a synthetic resin and is formed in a bottomed cylindrical shape, and is supported in a suspended and antivibration manner by a coil spring that is suspended and supported from the upper end of the outer frame 5 or a vibration isolator 8 that is made of elastic rubber. Further, a drain valve 13 and a drain hose 11 are provided outside the bottom of the outer tub 7, and are connected to the drain hose 11 via a drain port 7 a and a drain valve 13 provided at the bottom of the outer tub 7.

  The washing machine 1 also includes a control unit 19 that is a control means, an electromagnetic water supply valve 16 that is a water supply means, a pressure-sensitive water level sensor 15 that detects the water level, and the like. When performing the washing process or the like, the electromagnetic water supply valve 16 is opened by the command of the control unit 19, and the washing water is supplied into the outer tub 7. When the water level sensor 15 detects that the water level has reached a predetermined level, the electromagnetic water supply valve 16 is closed by a command from the control unit 19 to stop water supply. Moreover, when performing a dehydration process etc., the drain valve 13 is opened by the instruction | command of the control unit 19, and the wash water in the outer tub 7 is discharged | emitted from the other end of the drain hose 11 out of the washing machine 1.

  An upper cover 9 made of synthetic resin is provided on the upper part of the outer frame 5, and a base member 10 made of synthetic resin is provided on the lower part of the outer frame 5. A central portion of the top cover 9 has a laundry input port 9a for taking in and out the laundry 12 and the like, and a lid 9b for opening and closing the laundry input port 9a. Further, a water supply hose connection port 17 connected to a water tap is provided at the rear portion of the top cover 9. The water supply hose connection port 17 is connected to the electromagnetic water supply valve 16.

  In addition, there is a gap between the inner circumference of the outer tub 7 and the outer circumference of the washing tub 2, and the upper end of the outer tub 7 is kept in order to prevent the laundry from entering the gap and to maintain the rigidity of the entire outer tub 7. Is provided with a tank cover 18 that covers the upper surface of the balance ring 23.

  The drive device 6 is attached to the outside of the bottom of the outer tub 7 via a steel plate attachment base 14. The drive device 6 is configured to drive the stirring blade 3 via a drive motor and a speed reduction mechanism. The driving device 6 selectively selects a stirring mode in which the stirring wing 3 is rotated in both forward and reverse directions while the washing tub 2 is stationary, and a dehydration mode in which the washing tub 2 and the stirring wing 3 are integrally rotated in the same direction. It is comprised so that it can drive.

  FIG. 2 is a longitudinal sectional view showing the internal configuration of the washing tub according to the present embodiment. In FIG. 2, the dehydration hole 21a (see FIG. 1) is not shown.

  As shown in FIG. 2, the body plate 21 is a stainless steel plate formed in a cylindrical shape, and the washing water contained in the laundry 12 on the peripheral wall is separated from the laundry 12 by centrifugal force and discharged. A plurality of dewatering holes 21a (see FIG. 1, only part of which are shown) are formed.

  The body plate 21 is attached with a circulation channel member 24 that constitutes the circulation channel R. The circulation flow path member 24 is formed of a substantially plate-shaped member such as a synthetic resin, and is configured to extend in the vertical direction with a predetermined width.

  Further, a circulation channel member 25 that constitutes the circulation channel R is attached to the body plate 21 at a position different from the circulation channel member 24. A detachable lint collecting member 26 is attached to the circulation channel member 25. The lint collecting member 26 has a plurality of openings 26a, and a lint filter (not shown) is provided in a region where the openings 26a are disposed.

  The bottom plate 22 is made of a synthetic resin and is a dish-shaped member that closes the lower portion of the body plate 21, and includes a bottom portion 22a that forms the bottom surface of the washing tub 2, and a side that extends upward from the outer peripheral edge of the bottom portion 22a and forms a side surface. Part 22b, and is fixed to the lower end of the body plate 21. In addition, a plurality of through holes 22c communicating with the bottom of the outer tub 7 are formed in the bottom portion 22a.

  The balance ring 23 is formed in a ring shape with synthetic resin or the like, and is fixed to the upper end portion (upper edge portion) of the body plate 21. The balance ring 23 is disposed so as to protrude radially inward from the inner wall surface of the trunk plate 21, and the inner diameter of the balance ring 23 is configured to be smaller than the inner diameter of the trunk plate 21. Further, the balance ring 23 is configured by enclosing a fluid having a large specific gravity (such as salt water) therein, and cancels the eccentricity due to the movement of the fluid when the eccentricity occurs due to the unevenness of the laundry when the washing tub 2 rotates. , Has the function of maintaining the balance of rotation.

  The stirring blade 3 has a substantially disk shape having a diameter covering the inside of the bottom plate 22 (inner bottom portion of the washing tub 2), and the center portion rises upward in the rotation axis direction and undulates vertically along the circumferential direction. It is configured. Further, the stirring blade 3 is formed to be curved so that a part of the peripheral edge is pushed upward. Further, the stirring blade 3 is formed with a plurality of holes 3a penetrating the front surface side and the back surface side, and a circular dimple portion 3b and a radially extending ridge portion 3c are formed at a plurality of locations.

  FIG. 3 is a cross-sectional view showing the inside of the washing tub with the stirring blades removed. FIG. 3 is a cross-sectional view of the waste thread collecting member 26 as viewed from the front.

  As shown in FIG. 3, the circulation channel member 24 has an upper end 24 a extending to the vicinity of the balance ring 23, and a lower end 24 b extending to a position where it enters the recess of the bottom plate 22. Further, at the upper end 24 a of the circulation flow path member 24, a flange portion 24 a 1 is formed that is integrally bent with resin on the radially inner side. The tip of the collar portion 24 a 1 is set at a position that does not protrude radially inward from the balance ring 23. Further, at the lower end 24b of the circulation flow path member 24, a flange portion 24b1 that is integrally bent with resin and fits with the bottom plate 22 is formed to protrude radially inward.

  Further, a water conduit 24 c formed integrally with resin is formed on the back surface of the circulation channel member 24, and a circulation channel R is formed between the circulation channel member 24 and the inner wall surface 21 b of the trunk plate 21. Yes. That is, a pair of ribs (not shown) spaced apart in the left-right direction (circumferential direction) are formed on the back surface of the circulation channel member 24 so as to protrude toward the body plate 21, and the circulation channel member A fixing portion (not shown) for fixing 24 to the body plate 21 is provided. A packing (not shown) is attached to the rib so as to be in close contact with the inner wall surface of the circulation flow path member 24, and the circulation flow path member 24 is fixed to the body plate 21 through a fixing portion, thereby flowing from the inlet 27. The washing water can flow up to the upper end of the circulation flow path member 24 without leaking in the middle.

  Further, a water conduit (not shown) formed integrally with a resin is formed on the back surface of the circulation channel member 25 provided with the lint collecting member 26, and the inside of the circulation channel member 25 and the body plate 21 is formed. A circulation channel (not shown) is formed between the wall surface (not shown). The circulation channel member 25 of the present embodiment does not have the circulation channel R formed up to the upper end of the washing water, and sprays the washing water into the washing tub 2 from the opening 26a of the waste thread collecting member 26. It is to be circulated. In addition, it is not limited to the circulation flow path member 25 of such a structure, The slit-shaped discharge port which discharges washing water was provided above the waste thread collection member 26 of the circulation flow path member 25. It may be a thing.

  An inlet (introduction port) 27 for introducing the washing water into the circulation water channel R is provided at the bottom of the washing tub 2 positioned below the circulation channel member 24 in the vertical direction. The bottom plate 22 provided with the inlet 27 is formed to be curved so as to have an R shape from the bottom 22a to the side 22b. Thereby, the direction of the flow of the washing water can be smoothly changed to the circulation water channel R extending in the vertical direction. Further, the height dimension H of the inlet 27 is a length until a straight line drawn downward in the vertical direction from the lower surface of the flange portion 24b1 contacts the bottom plate 22. The height position Hm (see FIG. 5) of the inlet 27 is the height of the lower surface of the collar portion 24b1, in other words, the height of the upper end of the inlet 27.

  In addition, a discharge port 31 is formed at the upper end of the circulating water channel R so as to open upward in the vertical direction. The discharge port 31 is disposed so as to face the lower surface 23 a of the balance ring 23. Thus, the washing water discharged from the discharge port 31 collides with the lower surface 23a of the balance ring 23, so that the washing water is directed into the washing tub 2 from the gap 32 formed between the collar portion 24a1 and the lower surface 23a. Are discharged (sprinkled).

  In addition, an inlet (inlet port) 28 (see FIG. 3) for introducing the washing water into the circulation channel is formed at the bottom of the washing tub 2 positioned below the circulation channel member 25 in the vertical direction. Yes. The washing water introduced from the inlet 28 passes through a water conduit (not shown) formed between the circulation flow path member 25 and the body plate 21 and is introduced into the waste thread collecting member 26 so that the waste thread is removed. After being collected, water is sprayed into the washing tub 2 from the opening 26a.

  FIG. 4 is a perspective view showing the back side of the stirring blade.

  As shown in FIG. 4, a plurality of back blades 33 (radial ribs) extending in the radial direction D from the rotation axis center O are formed on the back surface (lower surface) of the stirring blade 3. In other words, the back blades 33 are formed radially from the rotation axis center O. The back blade 33 has a plate shape and is formed so as to protrude downward in the vertical direction (upward in FIG. 4) from the back surface of the stirring blade 3. Further, the back blade 33 is configured to be arranged at a substantially equal angle in the circumferential direction W.

  In the present embodiment, back blade groups 33A and 33A are formed on the back surfaces of the two regions raised above the stirring blade 3 (see FIG. 2). Thereby, a large amount of water taken in between the back blades 33 can be secured. Each back blade group 33A is composed of five back blades 33, and is arranged in an angle range of about 90 degrees. The back blade group 33A has not only a function of taking in the washing water to be circulated, but also a function as a reinforcing member for suppressing the laundry 12 from being poured into the washing tub 2 and bending and deforming the stirring blade 3.

  Back blade groups 33B and 33B are formed in a region between the back blade group 33A and the back blade group 33A. The back blade group 33B is formed on the back surface of two regions recessed below the stirring blade 3 (see FIG. 2). The back blade group 33B is composed of three back blades and is disposed within an angle range of about 90 degrees. The back blade group 33B mainly functions as a reinforcing member that suppresses the stirring blade 3 from being bent and deformed.

  In addition, annular ribs 34, 34, 34 formed concentrically or substantially concentrically around the rotation center axis O are formed on the center side of the back surface of the stirring blade 3 (region of about a half of the radius). ing. Thereby, the stirring blade 3 and the back blade group 33A, 33A, 33B, 33B can be reinforced.

  Further, an outer peripheral rib 35 and inner peripheral ribs 36 and 37 extending in the circumferential direction W are formed on the back surface (lower surface) of the stirring blade 3 at intervals in the radial direction D. Further, the outer peripheral side rib 35 and the inner peripheral side ribs 36 and 37 are formed to be curved with substantially the same curvature as that of the stirring blade 3.

  The outer circumferential rib 35 is a circumferential rib located on the outer circumferential side, and extends from the rear blade 33 at one end in the circumferential direction W of the rear blade group 33A to the rear blade 33 at the other end. It is integrally formed. Moreover, the outer peripheral side rib 35 is located in the front end side of each back blade 33 of the back blade group 33A. Note that the front end side of the back blade 33 means an end portion on the outer peripheral side of the back blade 33 or the vicinity of an end portion on the outer peripheral side of the back blade 33.

  The inner peripheral side ribs 36 and 37 are circumferential ribs positioned on the inner peripheral side with respect to the outer peripheral side rib 35, and are configured such that the inner peripheral side rib 36 is positioned on the outer peripheral side with respect to the inner peripheral side rib 37. Yes. Further, the inner peripheral ribs 36 and 37 are formed to be shorter in the vertical direction than the outer peripheral rib 35. Further, the inner circumferential side rib 36 is formed to be longer in the vertical direction than the inner circumferential side rib 37.

  The inner peripheral ribs 36 and 37 are integrally formed with the three back blades 33 at the center of the five back blades 33 of the back blade group 33A.

  FIG. 5 is a cross-sectional view showing the positional relationship between the inlet of the circulating water channel and the radial rib. FIG. 5 shows a cross-sectional view of the back blade group 33A when the center back blade 33 of the five back blades 33 is cut to the front.

  As shown in FIG. 5, the surface of the stirring blade 3 has a slightly raised shape at the center, and has an inclined surface 3d that rises from the position of the annular rib 34 toward the outer peripheral side (radially outward). Yes. In the position shown in FIG. 5, the outer peripheral edge of the stirring blade 3 is located above the upper end 22 d of the bottom plate 22. A drooping portion 3 e extending toward the inlet 27 is formed on the outer peripheral edge of the stirring blade 3. The tip (lower end) of the hanging portion 3e is positioned above the inlet 27 (the collar portion 24b1), and is configured such that a gap S is formed between the surface of the circulation flow path member 24. The dimension of the gap S is set to the minimum distance at which the stirring blade 3 does not contact the circulation channel member 24 during operation.

  The outer peripheral side rib 35 and the inner peripheral side ribs 36 and 37 extend toward the bottom portion 22a of the bottom plate 22 positioned below and are formed in parallel to each other. Moreover, the outer peripheral side rib 35 and the inner peripheral side ribs 36 and 37 are located on the outer peripheral side with respect to half the radius of the stirring blade 3 (1/2).

  The front end (lower end) 35a of the outer peripheral side rib 35 is located on the side of the bottom 22a (bottom side) from the height position Hm of the inlet 27 of the circulating water channel R (the lower surface of the flange portion 24b1). In other words, the front end (lower end) 35a of the outer peripheral side rib 35 is located below the upper end portion (height position Hm) of the inlet 27, and the inlet 27 and the outer peripheral side rib 35 are identical when viewed from the radial direction. It is comprised so that it may overlap in a part. Further, the front end (lower end) 35 a of the outer peripheral side rib 35 is located above a height position that is half the height dimension H of the inlet 27. As a result, the amount of washing water that escapes from the gap S can be suppressed, and the flow rate of the washing water introduced into the inlet 27 can be suppressed from decreasing.

  The tips (lower ends) 36a, 37a of the inner peripheral ribs 36, 37 are located on the side farther from the bottom portion 22a than the tips (lower ends) 35a of the outer peripheral rib 35. In other words, the tips (lower ends) 36a, 37a of the inner peripheral ribs 36, 37 are positioned above the tips (lower ends) 35a of the outer peripheral ribs 35. Further, the front end (lower end) 36 a of the inner peripheral side rib 36 is located closer to the bottom 22 a than the front end (lower end) 37 a of the inner peripheral side rib 37.

  A boss 3f connected to the rotation shaft 6a of the drive device 6 (see FIG. 1) is provided at the rotation shaft center O of the stirring blade 3. The boss 3f is formed on the back surface of the stirring blade 3 so as to protrude downward. When the tip (lower end) of the boss 3f is the reference position Hs, the height of the tip 35a of the outer peripheral rib 35 is H1, the height of the tip 36a of the inner rib 36 is H2, and the inner rib When the height dimension of the tip 37a of 37 is H3, the relationship is H1 <H2 <H3.

  Moreover, the length of the vertical direction from the back surface of the stirring blade 3 of the outer peripheral side rib 35 is set longer than the half (1/2) of the length from a back surface to the reference position Hs. Further, the length in the vertical direction from the back surface of the stirring blade 3 of the inner peripheral ribs 36 and 37 is set to be equal to or less than a half (1/2) of the length from the back surface to the reference position Hs.

  In the washing machine 1 provided with such a circulation flow path member 24, a pump formed by the inner peripheral side of the bottom plate 22 (inner bottom portion of the washing tub 2) and the back blade 33 provided on the back surface of the stirring blade 3. A circulation channel R is configured to communicate with the chamber P (see FIG. 1).

  In the washing machine 1 configured as described above, for example, when the laundry 12 is put into the washing tub 2, the power switch is turned on, and the start switch (not shown) is turned on, an electromagnetic water supply is performed according to a command from the control unit 19. The valve 16 is controlled to supply water to a predetermined water level, and the process proceeds to a washing (washing) process. In the washing process, the motor of the driving device 6 is rotated by being controlled by the control unit 19 in the right rotation / pause / left rotation / pause according to the washing water flow. The rotation of the motor of the driving device 6 controlled in this way is transmitted to the stirring blade 3, the stirring blade 3 and the back blade 33 rotate, the laundry 12 and the washing water in the washing tub 2 are stirred, and the laundry 12 Is washed. In addition, the rotational speed of the motor of the drive device 6 is set to 90 to 150 revolutions per minute, for example.

  On the other hand, the washing water on the back side of the stirring blade 3 is pushed outward by centrifugal force by the rotation of the back blade 33 due to the rotation of the stirring blade 3, pushed up in the circulation water channel R, and intermittently upward from the discharge port 31. Discharged. The washing water discharged from the discharge port 31 collides with the lower surface 23 a of the balance ring 23, so that the direction of the washing water is changed to the inside of the washing tub 2 and is poured into the washing tub 2 intermittently. When the washing water is pushed out to the circulation channel R by the back blade 33 of the stirring blade 3, new washing water is then supplied from the through hole 22 c (see FIG. 2) leading to the outer tub 7 provided in the bottom portion 22 a of the bottom plate 22. Is done.

  FIG. 6 is a perspective view showing the back side of a stirring blade as a comparative example. The stirring blade 100 of the comparative example and the stirring blade 3 of the present embodiment differ in the shape of the circumferential rib, and the shape of the surface of the other stirring blades 3, the shape of the back blade 33 and the annular rib 34 are the same. is there. Moreover, in the stirring blade 100, about the structure same as the stirring blade 3, the same code | symbol is attached | subjected and the overlapping description is abbreviate | omitted.

  As shown in FIG. 6, the stirring blade 100 includes circumferential ribs 101 and 102. The circumferential rib 101 is formed at the same position as the inner circumferential rib 36 of the present embodiment, and the circumferential rib 102 is formed at the same position as the inner circumferential rib 37 of the present embodiment. The circumferential ribs 101 and 102 are formed longer in the vertical direction than the inner circumferential ribs 36 and 37 of the present embodiment. Moreover, the front-end | tips 101a and 102a of the circumferential direction ribs 101 and 102 are comprised so that it may be located in the side closer to the bottom part 22a rather than the front-end | tips 36a and 37a of the inner peripheral side ribs 36 and 37 of this embodiment.

  FIG. 7 shows the flow of water by the circumferential rib, (a) is this embodiment, (b) is a comparative example. In addition, the magnitude of the white arrow indicates the magnitude of the flow rate of the wash water flowing through the circulation water channel R.

  First, the comparative example of FIG. 7B will be described. The circumferential ribs 101 and 102 are located on the inner peripheral side with respect to the tip of the back blade 33. Further, the tip 101a of the circumferential rib 101 is positioned below half (1/2) of the height dimension H of the inlet 27. Further, the distal end 102 a of the circumferential rib 102 is positioned closer to the bottom 22 a than the distal end 101 a of the circumferential rib 101.

  In the comparative example of FIG. 7B, the washing water is held between the adjacent back blades 33, and when the stirring blade 100 rotates in this state, an outward centrifugal force acts on the washing water. At this time, the wash water in the lower part of the space Q10 located between the outermost annular rib 34 and the circumferential rib 102 is, as indicated by the white arrow Y10, the tip 102a and the bottom 22 ( Extruded toward the outer peripheral side through the space between the bottom surface 22a1). Moreover, the flow of the wash water to the outer peripheral side is restricted by the circumferential rib 102 in the wash water located in the upper part of the space Q10.

  Further, the washing water in the lower portion of the space Q11 located between the circumferential rib 101 and the circumferential rib 102 has a tip 101a and a bottom portion 22a (bottom surface 22a1) of the circumferential rib 101 as shown by a white arrow Y11. It is pushed out to the outer periphery side. Moreover, the flow of the wash water to the outer peripheral side is restricted by the circumferential rib 101 in the wash water located in the upper part of the space Q11.

  In addition, the washing water located in the space Q12 located between the circumferential rib 101 and the hanging portion 3e has a part of the washing water, together with the washing water from the spaces Q10 and Q11, as shown by the white arrow Y12. It is pushed toward 27. Further, the remaining washing water is pushed out into the washing tub 2 through the gap S between the stirring blade 100 and the circulation flow path member 24.

  In the stirring blade 100 having such a shape, the flow rate of washing water pushed out to the outer peripheral side by the circumferential ribs 101 and 102 formed at positions where the tips 101a and 102a are close to the bottom surface 22a1 of the bottom plate 22 is reduced. Further, since the space Q12 facing both the gap S and the inlet 27 is formed toward the radially outer side (the side on which the washing water is pushed out by the centrifugal force), the gap S as shown by the white arrow Y13 is formed. The flow rate of the wash water that escapes increases, and the flow rate of the wash water flowing to the inlet 27 decreases as indicated by the white arrow Y14.

  On the other hand, in the present embodiment shown in FIG. 7A, the wash water in the lower portion of the space Q1 located between the outermost annular rib 34 and the inner peripheral rib (circumferential rib) 37 is As indicated by a hollow arrow Y1, the sheet is pushed toward the outer peripheral side through the space between the tip 37a and the bottom 22a. Moreover, the washing water in the upper part of the space Q1 is pushed out to the outer peripheral side as an obliquely downward water flow by the inner peripheral side rib 37 as indicated by the white arrow Y2.

  In addition, the washing water in the lower part of the space Q2 located between the inner peripheral rib (circumferential rib) 36 and the inner peripheral rib (circumferential rib) 37 has a tip 36a as shown by a white arrow Y3. It is pushed to the outer peripheral side through the space between the bottom 22a. Further, as indicated by the white arrow Y4, the washing water in the upper portion of the space Q2 is pushed to the outer peripheral side by the inner peripheral side rib 36 as a water flow obliquely downward.

  Also, the wash water in the lower part of the space Q3 located between the inner peripheral rib (circumferential rib) 36 and the outer peripheral rib (circumferential rib) 35 is directed toward the outer peripheral side as indicated by the white arrow Y5. Pushed out. Further, the washing water in the upper part of the space Q3 is pushed out to the outer peripheral side as an obliquely downward water flow as indicated by a hollow arrow Y6. And the washing water which passed between the front-end | tip 35a and the bottom face 22a1 of the outer peripheral side rib 35 is extruded by the inlet 27 substantially as shown by the white arrow Y7.

  In the washing machine 1 of the present embodiment configured as described above, the tips 36a, 37a of the inner peripheral ribs 36, 37 are formed at positions farther from the bottom surface 22a1 than the tips 35a of the outer peripheral ribs 35. The washing water of Q1 and Q2 can be pushed out to the outer peripheral side, a downward water flow can be generated, and almost all of the washing water in the spaces Q1 and Q2 can be pushed out to the outer space Q3. Thereby, in this embodiment, it becomes possible to increase the amount of circulating water more than before, without reducing the rigidity of the stirring blade 3, and without raising the rotational speed of the stirring blade 3 too much.

  Further, in the present embodiment, the front end 35a of the outer peripheral rib 35 is located below the height position Hm (see FIG. 5) of the inlet 27 (position closer to the bottom surface 22a1 side). Accordingly, the wash water can be guided to the bottom 22a side, and it becomes easy to introduce the wash water beyond the outer peripheral side rib 35 to the outer peripheral side into the inlet 27, and the flow rate of the wash water introduced into the circulation channel R is increased. Can be made. Further, since the tip 35a of the outer peripheral side rib 35 is located below the height position Hm of the inlet 27 (see FIG. 5), the washing water that has passed from the outer peripheral side rib 35 to the outer peripheral side is immediately supplied to the inlet 27. As shown by the white arrow Y8, the flow rate of the washing water escaping from the gap S can be reduced as compared with the case of FIG.

  By the way, in this embodiment, when only the inner peripheral side ribs (circumferential ribs) 36 and 37 are provided without providing the outer peripheral side rib 35, the flow rate of the washing water flowing through the circulation water channel R is shown in FIG. ), The amount of washing water escaping from the gap S also increases. Therefore, in the present embodiment, not only the inner peripheral ribs 36 and 37 are provided as the circumferential ribs, but the outer peripheral ribs 35 are additionally provided, whereby the flow rate of the washing water flowing through the circulation channel R is shown in FIG. It is made to increase rather than the case of b).

  In the present embodiment, the outer peripheral rib 35 is located on the outer peripheral end side (outer peripheral end) of the back blade 33. Thereby, while being able to reduce the quantity which washing water escapes from crevice S, since bending deformation of back blade 33 can be controlled, the rigidity of stirring blade 3 can be raised.

  Moreover, in this embodiment, the front-end | tips 36a and 37a of the inner peripheral side ribs 36 and 37 are located in the side which approaches the bottom part 22a as it goes to an outer peripheral side. As a result, it becomes easier to guide the washing water downward as the washing water moves toward the outer peripheral side, so that it becomes easier to introduce more washing water into the inlet 27.

  FIG. 8 shows an image of shower diffusion, (a) is the present embodiment, and (b) is a comparative example. Note that in both (a) and (b), the balance ring 23 is not shown.

  The washing tub 120 as a comparative example shown in FIG. 8B does not have a discharge port 31 that opens upward at the upper end of the circulation channel member 110 like the circulation channel member 24. An upper plate 110a is provided toward the inside. In the washing tub 120, when the washing water is discharged in the configuration of FIG. 7B, the washing water diffusion angle is limited as indicated by the hatched region U10 in FIG. 8B. Discharged.

  On the other hand, in the washing tub 2 of the present embodiment shown in FIG. 8A, the circulation flow rate of the washing tub 2 flowing through the circulation water channel R is increased by the outer peripheral side rib 35 and the inner peripheral side ribs 36 and 37. Thus, as shown by a region U1 indicated by oblique lines in FIG. 8A, the diffusion angle of the washing water discharged from the discharge port 31 of the circulation flow path member 24 can be made larger than that in FIG. 8B. . Thereby, in the washing process or the rinsing process, the washing water can be sprayed over the entire laundry.

  Moreover, in this embodiment, the circulation water channel R is provided with the discharge port 31 which opens upwards, and this discharge port 31 is arrange | positioned facing the lower surface 23a of the balance ring 23 provided in the washing tub 2. As shown in FIG. Accordingly, the upper plate 110a of the circulation channel member 110 in FIG. 8B can be made unnecessary, so that the washing water can be directly applied to the lower surface 23a of the balance ring 23, and the diffusion angle of the washing water can be expanded.

  Moreover, in this embodiment, the collection rate of the foreign material (lint waste) collected by the waste thread collection member 26 can also be improved because the amount of circulating water can be increased.

  Next, another embodiment of the present invention will be described with reference to FIGS.

  FIG. 9 shows a perspective view of the base member 10 as seen from the bottom side. (A) is a case where only the base member 10 is provided without the outer frame 5, and (b) shows a case where the base member 10 is attached to the outer frame 5. As can be seen from FIG. 9, a space 130 exists at the bottom of the base member 10. The space 130 is a space necessary for an operation such as scooping the drainage hose when the installation company installs the washing machine in the home. However, due to the presence of the space 130, operation sounds of the washing tub 2 and the driving device 6 may leak out of the washing machine through the space 130 and cause noise.

  Therefore, as shown in FIG. 10, a sound insulating plate 140 is provided at the bottom of the base member 10 so as to cover the space 130 of the base member 10. By doing so, it is possible to reduce noise leaking from the space 130.

  FIG. 11 is a perspective view of the sound insulating plate 140 as viewed from above. For example, the installation contractor installs the sound insulation plate 140 on the bottom side of the base member 10 when installing the washing machine in the home. At the time of this attachment, first, the sound insulating plate 140 is positioned by applying the positioning rib 141 provided on the rear side of the sound insulating plate 140 to the positioning wall 142 of the base member 10. Since the positioning rib 141 is provided on the rear side of the sound insulating plate 140 and the operator can work from the front side, positioning becomes easier and the assemblability is improved. After the positioning, the sound insulating plate 140 is fixed to the base member 10 by fitting the fixing claws 143 provided at the two positions on the front side and the right and left sides of the sound insulating plate 140 with the base member 10. In addition, the attachment position of the fixed nail | claw 143 is not limited to this.

  In addition, the sound insulating plate 140 has a water channel 144 through which water leaks when water leaks from the inside of the washing machine toward the water channel outlet 145. The water channel 144 is at the lowest position (position on the bottom surface side) of the sound insulating plate 140 so that water leaks into the water channel 144. The water channel 144 has a water channel outlet 145 that discharges water leakage outside the apparatus. The water leaked into the water channel 144 flows to the water channel outlet 145, and the water leak is discharged from the water channel outlet 145. As described above, since water leaks from the water channel outlet 145, even if a water leak occurs on the bottom surface of the washing machine, it is possible to easily notify the user or service provider of the occurrence of water leak, such as repair. Can be aroused. Further, since the water channel outlet 145 is provided on the front side (front side) of the washing machine, it is possible to more easily notify the user or service provider of the occurrence of water leakage when the water is discharged outside the machine. .

  FIG. 12 is a diagram illustrating a state in which the fixing claw 143 is fitted to the base member 10. After positioning by the positioning rib 141, the operator pushes the sound insulating plate 140 toward the base member 10. At this time, the fixed claw 143 and the base member 10 are fitted together by sliding the inclined portion of the leading portion of the fixed claw 143. By comprising in this way, a screw etc. become unnecessary and an assembly property improves.

  FIG. 13 is an enlarged view of region A in FIG. The sound insulation plate 140 is provided with a plurality of pressing ribs 146 along the outer peripheral side thereof. FIG. 14 is an enlarged view of the vicinity of the pressing rib 146. The pressing rib 146 is provided so as to protrude upward from the sound insulating plate 140. Accordingly, the gap 147 between the sound insulating plate 140 and the base member 10 is substantially eliminated between the pressing rib 146 and the base member 10, or the pressing rib 146 contacts the base member 10. Thereby, when the vibration in the vertical direction of the washing machine becomes large, it is possible to suppress a collision sound when the sound insulation plate 140 and the base member 10 collide in the vertical direction, and it is possible to reduce noise.

  FIG. 15 is an enlarged view of the fixing claw 143. 15A is a perspective view of the fixed claw 143, and FIG. 15B is a side view of the fixed claw 143. FIG. The fixed claw 143 has a pressing rib 148 along the vertical direction below the head portion. The pressing rib 148 protrudes from the sound insulating plate 140 (fixed claw 143) in the horizontal direction. The pressing rib 148 substantially eliminates the gap between the pressing rib 148 and the base member 10, or the pressing rib 148 contacts the base member 10. Thereby, when the vibration in the horizontal direction or horizontal direction of the washing machine becomes large, the collision sound when the sound insulation board 140 and the base member 10 collide in the horizontal direction or the horizontal direction can be suppressed, and noise is reduced. It becomes possible.

  As described above, in this embodiment, it is possible to provide a washing machine capable of reducing noise while ensuring assemblability.

  In addition, this invention is not limited to above-described embodiment, In the range which does not change the range of this invention, it can change variously. In the above-described embodiment, the case where the four circulation channel members 24 and 25 are provided has been described as an example. However, one, two, three, five or more circulation channel members are provided. There may be.

  Further, in the present embodiment, the case where three circumferential ribs (outer peripheral side rib 35, inner peripheral side ribs 36, 37) are provided is described as an example, but is not limited to three. For example, it may be two circumferential ribs (outer peripheral rib 35, inner peripheral rib) or four or more circumferential ribs (outer peripheral rib 35, three inner peripheral ribs). As long as the rigidity of the stirring blade 3 is not impaired, it can be changed as appropriate.

  In this embodiment, the case where the tip 36a of the inner peripheral rib 36 is positioned below the tip 37a of the inner rib 37 has been described as an example. However, the tips 36a and 37a have the same length. The inner peripheral side ribs 36 and 37 may be sufficient.

  Further, in the present embodiment, the shape of the stirring blade 3 is described as an example in which the shape of the stirring blade 3 undulates along the circumferential direction. However, the shape of the stirring blade 3 is not limited to such a shape, and is along the circumferential direction. The present invention can also be applied to a stirring blade having a certain shape. Also in this case, by providing the outer peripheral side rib 35 and the inner peripheral side ribs 36 and 37, it is possible to obtain the same effect as the above-described embodiment.

DESCRIPTION OF SYMBOLS 1 Washing machine 2 Washing tub 3 Stirring blade 21 Trunk plate 22 Bottom plate 22a Bottom (bottom)
22a1 bottom 22b side 23 balance ring 23 bottom surface 24, 25 circulation ring member 24b1 collar 27 inlet 31 discharge port 33 back blade (radial rib)
35 Outer peripheral side rib (circumferential rib)
35a Tip of outer rib 36, 37 Inner rib (circumferential rib)
36a, 37a End of inner peripheral rib D Radial direction Hm Inlet height position R Circulation channel W Circumferential direction

Claims (4)

A washing tub for storing clothes;
An outer frame containing the washing tub;
A base member attached to the bottom of the outer frame and having a space in a substantially central portion;
With
A sound insulation plate is attached to the lower part of the base member so as to cover the space,
The sound insulating plate includes a positioning rib provided on a rear side, and a fixing claw to be fixed to the base member. The washing machine according to claim 1,
The sound insulating plate includes a water channel for flowing water leakage,
2. The washing machine according to claim 1, wherein the water channel includes a water channel outlet that discharges the water leakage to the outside of the washing machine. The washing machine according to claim 1 or 2,
The said sound insulation board is provided in the outer peripheral side of the said sound insulation board, and has the pressing rib which protruded upwards, The washing machine characterized by the above-mentioned. The washing machine according to any one of claims 1 to 3,
The washing machine according to claim 1, wherein the fixing claw has a pressing rib protruding in a horizontal direction.

Images