JP2020120789A - Washing machine - Google Patents

Abstract

To provide a washing machine which suppresses malfunctions of a siphon phenomenon to exert predetermined cleaning performance and softener effect.SOLUTION: The washing machine in the present disclosure is constituted by providing a metal mold-splitting part 86a and a metal mold-splitting part 86b at an upper corner R part of a siphon wall face 88a and a siphon wall face 88b for flowing a liquid detergent or a softener upward in a metal mold which forms a siphon mechanism for flowing the liquid detergent or the softener of a liquid agent-charging part 66a and a liquid agent-charging part 66b whereby an upper side of a burr 85 is wet with the liquid detergent or the softener flowing down by a self-weight so that all of the circumference of the burr 85 is filled with the liquid detergent or the softener to normally perform a siphon phenomenon. Thereby, such malfunctions that the liquid detergent or the softener in the case 57 is not discharged from the liquid agent-charging part 66a and the liquid agent-charging part 66b, and that the liquid detergent or the softener remains in the case 57 can be suppressed.SELECTED DRAWING: Figure 2

Description

The present invention relates to a washing machine for washing clothes using a liquid detergent or liquid finish.

Conventionally, in this type of washing machine, a configuration of a dosing device that automatically doses a liquid detergent and a liquid finishing agent (softening agent) during an operation process has been proposed (for example, refer to Patent Document 1).

FIG. 6 is a vertical sectional view of a conventional washing machine described in Patent Document 1, FIG. 7 is a sectional view of a detergent feeding device of the washing machine, and FIG. 8 is a main part of a detergent storage container portion of the washing machine. FIG. 9 is a cross-sectional view of the washing machine, and FIG. 9 is a view showing a mold configuration of a main part of a detergent storage container portion of the washing machine.

In FIGS. 6, 7, and 8, a detergent injection device 10 that is connected to the water supply valve 7 and that stores the powder synthetic detergent, the liquid detergent, and the liquid finishing agent is disposed on the upper portion of the housing 2. The detergent feeding device 10 is connected to the water tank 3 by a water supply hose 11 formed of a bellows rubber body.

The detergent feeding device 10 includes a detergent feeding portion frame 40 having a box-shaped box-like body having a bottom and an opening at the top, a detergent storing container 20 for storing detergent, and a detergent storing container connected to the water supply valve 7. 20 and a water supply member 30 provided with a water supply passage 31 for supplying water.

A detergent feeding section frame 40 is disposed below the water supply member 30, and the detergent accommodating container 20 is accommodated in a space 40a formed between the detergent supply section frame 40 and the water supply member 30 so as to be taken out from above. There is. Further, a water supply hose 11 is connected to the water tank 3 at the rear bottom of the detergent feeding portion frame 40.

In addition, a detergent accommodating container 20 is accommodated in a space 40a surrounded by the detergent insertion portion frame 40 and the water supply member 30 so as to be taken out from above. The water supply member 30 includes a water supply passage 31 that serves as a water passage for supplying water to the detergent container 20, and a water injection port 33 having a large number of small holes formed on the bottom surface thereof.

The water supplied from the water injection port 33 is mixed with the detergent (powder synthetic detergent, liquid detergent, liquid finishing agent, etc.) accommodated in the detergent accommodating container 20 to produce various detergent mixed liquids. In addition, the detergent input portion frame 40 has a detergent liquid supply passage 41 integrally formed on the bottom thereof. The various detergent mixed liquids are supplied into the water tank 3 via the detergent liquid supply passage 41 and the water supply hose 11 connected to the detergent liquid supply passage 41.

The detergent accommodating container 20 is accommodated in the detergent insertion portion frame 40 so as to be taken out from above, and the powder detergent accommodating portion 22 for accommodating the powder synthetic detergent and the liquid detergent accommodating portion for accommodating the liquid detergent or the liquid bleaching agent. 23, and a liquid finish agent storage section (liquid storage section) 24 for storing a liquid finish agent are provided.

A powder detergent input passage 22a is formed on the downstream side of the powder detergent container 22. A liquid detergent input passage 23 a is formed in the outer bottom portion on the downstream side of the liquid detergent container 23. A liquid finish agent input passage (liquid input passage) 24 a is formed on the downstream side of the outer bottom portion of the liquid finish agent storage portion 24. The detergents contained in the powder detergent container 22, the liquid detergent container 23, and the liquid finish agent container 24 are all diluted with the water supplied from the water supply valve 7, and the detergent liquid is supplied from the space 40a. It is configured to flow to the passage 41.

Further, on the upper portion of the liquid finish agent accommodating portion 24, an accommodating portion cover plate 25 that partially or wholly covers the liquid finish agent accommodating portion 24 is detachably provided. A substantially cylindrical second conduction path 26 is provided upright on the bottom of the liquid finishing agent accommodating portion 24. The lower end portion 26a of the second conduction path 26 is open outward of the bottom portion, and the upper end portion 26b is opened upward. One end 27a of a conduction path coupling portion 27 formed in an inverted U shape is connected to the upper end portion 26b of the second conduction path 26.

Inside the liquid finish agent accommodating portion 24, a first conducting path 28 formed in a substantially cylindrical shape is provided substantially in parallel with the second conducting path 26. The lower end portion 28 a of the first conduction path 28 opens in the vicinity of the bottom portion of the liquid finish agent accommodating portion 24. The upper end portion 28b of the first conducting path 28 is connected to the other end 27b of the other end 27b of the conducting path coupling portion 27 which is connected to the upper end portion of the first conducting path and is formed in an inverted U shape. ing.

As described above, the liquid finishing agent feeding path 24a is formed in the substantially U-shaped and substantially cylindrical shape of the liquid finishing agent accommodating portion 24 by the first conducting path 28, the conducting path connecting portion 27, and the second conducting path 26. It is formed such that it rises from the vicinity of the bottom part, then descends downward, and connects to the outside of the bottom part by a single path.

With the above configuration, when the liquid finish agent is charged, an appropriate amount of the liquid finish agent is charged in the liquid finish agent container 24 before the start of washing, and in the final rinsing step, the liquid finish agent is supplied from the second water supply passage 31b. Water is supplied to the liquid finish agent accommodating portion 24. The supplied water is partially or wholly mixed with the liquid finishing agent to become dilution water. By the water supply, the water level of the dilution water in the liquid finish agent accommodating portion 24 rises, and the dilution water is sucked up in the first conducting path 28. As the water supply further progresses, the dilution water exceeds the conduction passage coupling portion 27, whereby the dilution water begins to flow into the second conduction passage 26, and from the lower end portion 26a thereof, flows down to below the liquid finishing agent accommodating portion 24, and the siphon. The operation starts.
When the siphon operation is started, the dilution water in the liquid finish agent accommodating portion 24 continues to flow out even if the water supply is completed. When the dilution water sucked up into the liquid finish agent accommodating portion 24 is exhausted, the air enters the second conducting passage 26 and the conducting passage connecting portion 27, and the siphon operation ends.

JP, 2017-74284, A

However, in general, as a mold configuration at the apex portion of the first conduction path 28, since a mold dividing portion 43 is provided at the apex portion for degassing at the time of molding, the apex portion is projected upward. Burrs and steps are generated. When a burr or a step is generated, the liquid easily separates from the wall surface of the first conduction path 28 (siphon passage) around the burr or the step. Therefore, the siphon phenomenon does not work well and the liquid does not flow smoothly. there were.

The present disclosure provides a washing machine that suppresses malfunction of the siphon phenomenon and exhibits a predetermined cleaning performance and a softening agent effect.

In order to solve the conventional problems, the washing machine of the present invention has an outer frame, an outer tub droopingly vibration-supported in the outer frame, and a washing tub rotatably included in the outer tub. A case for accommodating a liquid detergent or a softening agent accommodated in a position facing the washing tub at a rear portion of the upper frame body, and an upper frame body arranged above the outer frame, and a case in which the case can be stored so as to be drawn out. The water injection device, a substantially cylindrical liquid agent introducing portion formed in communication with the lower surface of the inner bottom of the case, a cap that covers the upper portion of the liquid agent introducing portion and the surroundings with a gap, the case, the A detergent injection device configured to include a water injection device and the cap, and a liquid detergent or a softening agent that is injected into the washing tub through an outlet provided downstream of the liquid agent introduction portion by a siphon phenomenon. The dosing device is a mold for forming a siphon wall surface along which the liquid detergent or softening agent flows in the liquid agent dosing part, and a cavity die mold is provided at an upper corner R of the siphon wall surface where the liquid detergent or softening agent flows upward. A mold dividing section is provided.

INDUSTRIAL APPLICABILITY The washing machine of the present invention suppresses malfunction of the siphon phenomenon and exhibits a predetermined cleaning performance and a softening agent effect.

Longitudinal sectional view of the washing machine according to the first embodiment of the present invention. Exploded perspective view of the detergent injection device of the washing machine Vertical cross-sectional view of the detergent injection device of the washing machine seen from the front Sectional view and perspective view of the main part of the detergent charging device of the washing machine The principal part perspective view and arrow B figure of the detergent insertion device of the washing machine in the 2nd Embodiment of this invention. Vertical cross section of conventional washing machine Sectional view of the washing machine detergent dispenser Sectional view of the main part of the detergent container part of the washing machine The figure which shows the metal mold|die structure of the principal part of the detergent storage container part of the same washing machine.

Embodiments of the invention will be described below with reference to the drawings. The present invention is not limited to this embodiment.

(Embodiment 1)
1 is a vertical cross-sectional view of a washing machine according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of a detergent feeding device of the washing machine, and FIG. 3 is a front view of the detergent feeding device of the washing machine. FIG. 4 is a longitudinal sectional view and FIG. 4 is a sectional view and a perspective view of a main part of a detergent feeding device of the washing machine.

1 to 4, an outer frame 51 has an upper frame body 52 disposed on an upper portion thereof, a washing tub 53 rotatably included therein, and an outer tub 55 having an upper portion covered with a cover 54. Supports vibration isolation from the upper corners.

The washing tub 53 has a plurality of small holes (not shown). A large opening 52a is formed in the center of the upper frame 52, and a lid 56 is provided so as to cover the opening 52a so that it can be opened and closed.

A pulsator 82 for stirring clothes is rotatably arranged on the inner bottom of the washing tub 53, and a motor (not shown) provided on the outer bottom of the outer tub 55 drives the pulsator 82 and the washing tub 53 to rotate. To do.

Further, in the rear part of the upper frame 52, a liquid injection device 50, which is largely composed of a water injection device 62 and a case 57 retractably housed in the water injection device 62, is housed at a position facing the washing tub 53. ing.

The case 57 has a liquid detergent box 59 into which a liquid detergent is put, and a softener box 60 into which a liquid softening agent is put, and a space 61 is provided between the liquid detergent box 59 and the softener box 60. There is.

The water injection device 62 drops the tap water supplied via the water supply path 65 into the case 57 from a water injection port (not shown), and injects it into the washing tub 53 from the discharge port 63. The water supply path 65 is connected to a water supply valve (not shown) having a multi-valve structure capable of opening and closing two or more water channels so that water can be separately injected into the liquid detergent box 59 and the softener box 60 in the case 57. As described later, the liquid detergent and the softening finish are put into the washing tub 53 by the siphon phenomenon.

The case 57 is provided with a substantially cylindrical liquid agent input portion 66a that communicates with the lower surface of the inner bottom portion of the liquid detergent box 59 and a substantially cylindrical liquid agent input portion 66b that communicates with the lower surface of the inner bottom portion of the case of the softener box 60. ing.

The liquid agent input portion 66a and the liquid agent input portion 66b are respectively formed by a siphon passage guide wall 71a, a siphon passage guide wall 71b, a space portion 69a, and a space portion 69a69b that surround the three directions, and a cap 67a at the upper portion and the periphery thereof, 67b covers. Then, the guide wall-socket fitting portion 72a and the guide wall-socket fitting portion 72b of the cap 67a and the cap 67b are fitted to the siphon passage guide wall 71a and the siphon passage guide wall 71b, respectively. The side without the siphon passage guide wall 71b and the upper portion are covered with a predetermined gap. The predetermined gap and the space portions 69a and 69b form the liquid agent input portion 66a, the siphon inlet portion 70a of the liquid agent inlet portion 66b, and the siphon passages from the siphon inlet portion 70b.

At the corners R on the upstream side of the liquid in the siphon passage near the vertices of the liquid agent introducing parts 66a and 66b, there are provided mold dividing parts 86a and 86b for degassing during molding. There is a burr 85 which is unavoidable in terms of molding.

The liquid agent charging unit 66a and the liquid agent charging unit 66b respectively have a mold dividing unit 86a and a mold dividing unit 86b for degassing so that a burning phenomenon due to gas does not occur at the apex portions of the siphon wall surface 88a and the siphon wall surface 88b. It is a dividing surface obtained by dividing the cavity mold into two and sliding them on each other, and it is inevitable that the burr 85 will be generated if molding is continued.

The burr 85 has a height of 0.2 mm or less due to accuracy improvement and maintenance of the mold, and the surface and the periphery of the burr 85 should be washed with a neutral detergent containing sodium alkylbenzenesulfonate as a main component. As a result, the water-repellent substance (not shown) attached to the surface and the periphery of the burr 85, which is generated by the high temperature and high pressure of the gas generated from the resin during molding, is removed.

In the above configuration, when the liquid detergent and the softening agent are used, the case 57 is pulled out, the liquid detergent is put in the liquid detergent box 59, the softening agent is put in the softening agent box 60, and is stored in the water injection device 62.

When tap water is supplied from the water supply path 65 in this state, the supplied water is poured into the liquid detergent box 59 and becomes a cleaning liquid while diluting the liquid detergent in the liquid detergent box 59 to fill the inside.

When the water level in the liquid detergent box 59 rises, the cleaning liquid enters the gap between the liquid agent input part 66a and the cap 67a, and the water level further rises, so that the cleaning liquid reaches the upper end of the liquid agent input part 66a, and the cleaning liquid enters the liquid agent input part. It flows into the inside of the pipe of 66a, and flows out of the liquid detergent box 59 from the bottom portion (not shown) in the liquid detergent box. At this time, the cleaning liquid pushes the air remaining in the space near the upper end of the liquid agent input part 66a to the bottom part (not shown) in the liquid detergent box.

When the gap between the liquid agent input part 66a and the cap 67a, near the upper end of the liquid agent input part 66a, and the air inside the pipe of the liquid agent input part 66a is all swept away and filled with the cleaning liquid, the cleaning liquid flows out from the outlet 87a by the siphon principle. The solid flow increases the force in the direction of the liquid flow A indicated by the solid arrow 4 to flow out, and the siphon operation is started.

The siphon operation is continued even after the water supply from the water supply path 65 is stopped, and the cleaning liquid in the liquid detergent box 59 is discharged, so that the liquid detergent is poured through the discharge port 63 into the washing tub 53 together with the liquid detergent, When the water level of the detergent box 59 falls below the siphon inlet, air enters the siphon passage, and the siphon operation ends.

The softening agent is also supplied to the washing tub 53 from the outlet 87b through the outlet 63 by the same action as the liquid detergent.

However, if a burr, a step, or a water-repellent substance is attached to the siphon passage, the liquid may be separated from the siphon wall surface 88a and the siphon wall surface 88b with this portion as a base point.

If there is a sufficient amount of water supply and a large amount of liquid flows in the siphon passage, the liquid separated from the siphon wall surface 88a and the siphon wall surface 88b comes into contact with the wall surface again downstream thereof, and the liquid near the siphon passage exit. Fills the aisle and the siphon starts.

However, when the amount of water supply is small, or when the water repellency is large due to the large burrs or steps and the water-repellent substance is attached, the state where the liquid is separated from the siphon wall surface 88a and the siphon wall surface 88b reaches the siphon outlet. I will be in a row. As a result, air enters the siphon passages through the siphon outlets 87a and 87b, the siphon phenomenon does not occur correctly, and the liquid remains in the case.

When the liquid surface of the flowing liquid is separated from the wall surface of the siphon and the siphon is not normally started, the liquid in the passage from the top of the siphon downward, that is, in the passage toward the outflow port 87a and the outflow port 87b of the siphon outlet. The flow becomes a free fall, the flow velocity increases as it approaches the siphon outlet, and the cross-sectional area perpendicular to the flow direction decreases. That is, since the flow becomes thinner toward the downstream side and further separates from the siphon wall surface 88a and the siphon wall surface 88b, the liquid once separated from the siphon wall surface near the apex of the siphon is unlikely to contact the siphon wall surface again.

Therefore, even a small burr, a step, or a slight water-repellent substance may cause the siphon to not operate normally.

Essentially, it is necessary to avoid a mold structure that causes burrs or steps in the siphon passage, but in order to maintain mold easiness and deal with gas burning of parts, burrs and steps are not formed on the siphon passage. There is often no choice but to provide it.

Therefore, as described above, it is important to set the height of the burr 85 and to manage the height by improving the accuracy of the mold and performing maintenance.

In the above description, the liquid detergent box 59 side into which the liquid detergent is put is mainly described, but the softener box 60 into which the softener is put also has the same structure so that the soft detergent and the solution thereof always remain. Instead, a proper amount can be added at a proper time.

As described above, in the present embodiment, in the mold forming the siphon wall surface 88a and the siphon wall surface 88b along which the liquid detergent or the softening agent in the liquid agent input portion 66a and the liquid agent input portion 66b flows, the liquid detergent is directed upward. Alternatively, the mold dividing portion 86a and the mold dividing portion 86b of the cavity mold are provided at the upper corner R portion of the siphon wall surface 88a and the siphon wall surface 88b through which the softening agent flows. As a result, the upper side of the burr 85 gets wet with the liquid detergent or the softening agent that has descended by its own weight, so that the entire periphery of the burr 85 is filled with the liquid detergent or the softening agent, and the siphon phenomenon is normally performed. It is possible to prevent the liquid detergent or the softening agent in 57 from being discharged from the liquid agent feeding section 66a and the liquid agent feeding section 66b, and to prevent the liquid detergent or the softening agent from remaining in the case 57. Can be demonstrated.

By setting the height of the burr generated at the mold dividing portions of the siphon wall surface 88a and the siphon wall surface 88b to be 0.2 mm or less, the siphon phenomenon is normally performed, and the liquid detergent or softener in the case 57 is a liquid agent. It is possible to prevent discharge from the charging unit 66a and the liquid agent charging unit 66b and to prevent the liquid detergent or the softening agent from remaining in the case, so that a predetermined cleaning performance and a softening agent effect can be exhibited.

Further, by adopting a configuration in which the siphon wall surface 88a and the siphon wall surface 88b are cleaned with a cleaning agent containing an alkylbenzene sulfonate, the siphon phenomenon is normally performed, and the liquid detergent or the softening agent in the case 57 is discharged from the liquid agent input portion. It is possible to prevent the liquid from being discharged or the liquid detergent or the softening agent remaining in the case, and it is possible to exert a predetermined cleaning performance and a softening agent effect.

(Embodiment 2)
FIG. 5: is a principal part perspective view and arrow B figure of the detergent insertion device of the washing machine in the 2nd Embodiment of this invention. It should be noted that the structure is the same as that of the first embodiment except for the structure of the cavity mold of the liquid agent injection part, which is the same as that of the first embodiment, and the same parts are designated by the same reference numerals and the description thereof will be omitted.

In FIG. 5, the liquid agent charging unit 66a and the mold resin dividing unit 96a of the respective cavity molds forming the liquid agent charging unit 66b are divided into a siphon inlet 70a, a siphon inlet 70b vicinity, and a siphon passage guide. The ribs are provided at substantially the center of the ribs of the wall 71a and the siphon passage guide wall 71b.

As a result, the siphon wall surface 88a and the siphon wall surface 88b become smooth surfaces and do not affect the operation of the siphon phenomenon. Further, even if burrs are generated on the ribs of the siphon passage guide wall 71a and the siphon passage guide wall 71b, the siphon phenomenon is not affected.

As described above, in the present embodiment, the siphon inlet 70a, the vicinity of the siphon inlet 70b, the siphon passage guide wall 71a, and the siphon passage guide wall 71b are used in the mold for forming the liquid agent input portion 66a and the liquid agent input portion 66b. By providing the mold dividing part 96a and the mold dividing part 96b of the cavity mold on the line connecting the substantially central portions of the ribs, the siphon phenomenon is normally performed, and the liquid detergent or softener in the case 57 is It is possible to prevent discharge from the liquid agent input unit 66a and the liquid agent input unit 66b and to prevent liquid detergent or softening agent from remaining in the case 57, and it is possible to exhibit a predetermined cleaning performance and a softening agent effect.

The present disclosure can be applied to a washing machine including a siphon mechanism. Specifically, the present disclosure can be applied to a vertical washing machine, a drum washing machine, a two-tub washing machine, and the like.

50 Liquid Agent Input Device 51 Outer Frame 52 Upper Frame 53 Washing Tank 55 Outer Tank 57 Case 62 Water Injection Device 66a, 66b Liquid Agent Input Portion 67a, 67b Cap 70a, 70b Siphon Inlet 71a, 71b Siphon Passage Guide Wall 85 Burr 86a, 86b Mold dividing part 87a, 87b Outlet port 88a, 88b Siphon wall surface 96a, 96b Mold dividing part

Claims (4)

An outer frame, an outer tub drooping and vibration-proof supported in the outer frame, a washing tub rotatably included in the outer tub, an upper frame body disposed on the upper part of the outer frame, and the upper frame A case that accommodates a liquid detergent or a softener accommodated in a position facing the washing tub at the rear of the body, a water injection device that accommodates the case so that the case can be drawn out, and a case formed to communicate with the lower surface of the inner bottom of the case And a cap that covers the upper part and the periphery of the liquid agent input part with a gap, a case, the water injection device, and the cap, and a liquid detergent or A detergent injection device for injecting the softening agent into the washing tub through an outlet provided downstream of the liquid agent injection part, wherein the detergent injection device is arranged along with the liquid detergent or the softener in the liquid agent injection part. A washing machine in which a mold dividing portion of a cavity mold is provided at an upper corner R of a siphon wall surface in which a liquid detergent or a softener flows upward in a mold forming a flowing siphon wall surface. The washing machine according to claim 1, wherein the detergent feeding device has a burr height of 0.2 mm or less generated in the mold dividing portion on the wall surface of the siphon. The washing machine according to claim 1 or 2, wherein the detergent charging device cleans the wall surface of the siphon with a cleaning agent containing an alkylbenzene sulfonate. The detergent injection device according to claim 2 or 3, wherein a mold dividing part of the cavity mold is provided on a line connecting the vicinity of the siphon inlet and the substantially central part of the rib of the siphon passage guide wall in the mold forming the liquid agent injection part. The described washing machine.

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