WO2013157060A1

WO2013157060A1 - Washing machine

Info

Publication number: WO2013157060A1
Application number: PCT/JP2012/008059
Authority: WO
Inventors: 細見　光一; 統宇野; 大輔秋葉
Original assignee: 株式会社東芝; 東芝コンシューマエレクトロニクス・ホールディングス株式会社; 東芝ホームアプライアンス株式会社
Priority date: 2012-04-18
Filing date: 2012-12-18
Publication date: 2013-10-24
Also published as: JP2013220256A; JP5957274B2; MY185033A

Abstract

A washing machine (10) according to one embodiment of the present invention, wherein a water-draining lid (24) has a lid body (45) formed integrally using an amorphous polymer, and a hinge arm (46). On the hinge arm (46), the top surface of an edge section (46a) toward the lid body (45) is formed as a flat surface (48). The bottom surface side of the edge section (46a) has a downward-facing rib (49). On the hinge arm (46), the bottom surface of the end section (46b) on the opposite side from the edge section (46a) is formed as a flat surface (50). The top surface of the end section (46b) has an upward-facing rib (51). A brake mating part (52) is provided using the upward-facing rib (51) on the end-section (46b) side of the hinge arm (46).

Description

Washing machine

Citation of related application

This application is based on and seeks the benefit of priority based on Japanese Patent Application No. 2012-94696 filed on Apr. 18, 2012, the entire contents of which are incorporated herein by reference. Is done.

The embodiments described herein generally relate to washing machines.

Among the washing machines, in the two-tank washing machine, a dehydration lid for opening and closing the upper surface opening of the dehydration receiving tank is provided on the upper part of the dehydration receiving tank that houses the dehydration tank. The dehydrating lid is provided so as to be rotatable in the vertical direction around the rear shaft portion. The dehydrating lid generally has a configuration in which a rectangular lid body and a hinge arm portion provided so as to protrude rearward from the rear portion of the lid body are integrally formed of synthetic resin. The hinge arm portion is also integrally provided with a shaft portion whose axial direction points in the left-right direction.

In this type of washing machine, a brake mechanism is provided in order to immediately stop the rotation of the dehydration tank when the dehydration lid is opened during the rotation of the dehydration tank. The brake mechanism includes a brake drum, a brake member, a spring member, and a brake wire. The brake drum is provided so as to rotate integrally with the dewatering tank. The brake member slidably contacts the brake drum at the braking position to brake the rotation of the dewatering tank. The spring member biases the brake member toward the braking position. One end of the brake wire is connected to the brake member. The other end of the brake wire is provided so as to be engageable and disengageable with a brake engaging portion provided in a hinge arm portion of the dewatering lid.

When the dehydrating lid is closed, the brake engaging portion engages with the brake wire and holds the brake member in the brake release position against the biasing force of the spring member to allow the dehydrating tank to rotate. Yes. At this time, a load in the direction of opening the dehydrating lid is applied from the brake wire to the brake engaging portion of the hinge arm portion. When the dewatering lid is opened while the dewatering tank is rotating, the brake engagement portion and the brake wire are disengaged, and the brake member moves to the braking position by the urging force of the spring member and slides against the brake drum. Thus, the rotation of the dehydration tank is stopped.

FIG. 12 and FIG. 13 show a conventional example of this type of dehydration lid. The dehydrating lid 1 is formed by integrally molding a rectangular lid body 2 and a hinge arm portion 3 provided so as to protrude rearward from the rear portion of the lid body 2 with a synthetic resin. The lower surface of the hinge arm portion 3 is formed by a flat surface 4 having a flat curved surface with almost no unevenness. In the hinge arm portion 3, a plurality of upward ribs 5 a extending in the front-rear direction are provided in parallel on the upper surface side of the base end side near the lid body 2. In the hinge arm portion 3, a plurality of upward ribs 5 b extending in the front-rear and left-right directions are provided on the upper surface side of the distal end portion side opposite to the base end portion side. Two shaft portions 6 are integrally provided at both left and right end portions of the hinge arm portion 3 on the distal end side. As for the two axial parts 6, the axis line has faced the left-right direction. The dehydrating lid 1 is attached to a washing machine body (not shown) via the shaft portion 6 so as to be rotatable in the vertical direction. In the hinge arm 3, the brake engagement portion 7, the lid switch operation portion 8, and the engagement portion for the torsion coil spring are provided in the portion provided with the plurality of upward ribs 5 b on the upper surface side on the tip end side. 9 are provided.

This type of dehydration lid 1 is generally made of a crystalline polymer polypropylene (PP). The reason for this is that polypropylene has good moldability, the material unit price is relatively low, and solvent cracks are unlikely to occur. Generally, when a mechanical load is applied in a state where a solvent such as a detergent adheres to a synthetic resin molded product, the molded product is likely to be cracked or cracked. Cracks and cracks that occur in such a situation are called solvent cracks.

Japanese Patent Publication No. 8-24791 Utility Model Registration No. 2530417

On the other hand, in order to differentiate the appearance and other products, the dehydration lid is made of acrylonitrile / butadiene / styrene copolymer (ABS) or polystyrene (PS), or acrylonitrile / styrene copolymer (AS). It may be formed by an amorphous polymer such as However, when the dehydration lid is formed of such an amorphous polymer, although the appearance can be improved, there is a problem that the above-described solvent cracks are likely to occur.

Therefore, even if the dehydrating lid is made of an amorphous polymer, a washing machine that can prevent the occurrence of solvent cracks as much as possible and can relatively easily set the height of the brake engaging portion is provided. To do.

The washing machine of the embodiment includes a washing machine main body having a dehydration receiving tank, a dehydration tank, a dehydration lid, a brake engaging portion, and a brake mechanism.

The dewatering tank is rotatably provided in the dewatering tank and is rotated by a driving unit. The dehydrating lid integrally includes a lid main body and a hinge arm portion, and the hinge arm portion is attached to the washing machine main body via a shaft portion so as to be rotatable in the vertical direction. Open and close the top opening. The brake engaging portion is provided on the distal end side of the hinge arm portion opposite to the base end portion near the lid body. The brake mechanism includes a brake drum, a brake member, an urging portion, and a brake wire.

The brake drum is provided so as to rotate together with the dewatering tank, and the brake member can slide on the brake drum at a braking position to brake the rotation of the dewatering tank. The urging portion can urge the brake member toward a braking position. One end of the brake wire is connected to the brake member. The other end portion of the brake wire can be engaged and disengaged from the brake engaging portion.

When the dehydrating lid is closed, the brake engaging portion engages with the brake wire, and the engagement causes the brake member to be positioned at the brake release position against the urging force of the urging portion. Allows rotation of the dewatering tank. As the dehydrating lid is opened, the brake engagement portion and the brake wire are disengaged and the brake member is moved to the braking position by the urging force of the urging portion. The rotation of the dewatering tank is stopped via the drum.

The dehydrating lid is formed by integrally molding the lid body and the hinge arm portion with an amorphous polymer. A flat surface is formed on the upper surface of the base end portion of the hinge arm portion near the lid body. A downward rib is provided on the lower surface side of the base end portion. The lower surface of the tip portion opposite to the base end portion in the hinge arm portion is formed as a flat surface. There is an upward rib on the upper surface side of the tip, and the brake engaging portion is provided in the hinge arm portion using the upward rib.

It is a perspective view which shows the external appearance of the washing machine by embodiment. It is the enlarged view which looked at the cross section of the vertical direction and the left-right direction of the washing machine shown in FIG. 1 from the front side. It is the perspective view which shows the external appearance which looked at the state which removed the rear cover of the operation part of the said washing machine, and closed the spin-drying | dehydration lid. It is the elements on larger scale which looked at the cross section of the longitudinal direction and the front-back direction of the said washing machine including the coiled spring part in the state which closed the said spin-drying | dehydration lid from the side surface side. It is the elements on larger scale which looked at the cross section of the longitudinal direction and the front-back direction of the said washing machine including the cover switch part in the state which closed the said spin-drying | dehydration cover from the side surface side. It is the perspective view which shows the external appearance which looked at the state which removed the said rear cover of the said operation part, and opened the said spin-drying | dehydration lid. It is the elements on larger scale which looked at the cross section of the longitudinal direction and the front-back direction of the said washing machine including the said coil spring part in the state which opened the said dehydration cover from the side surface side. It is the perspective view which shows the external appearance which looked at the said spin-drying | dehydration lid single body from the rear upper part. It is the perspective view which shows the external appearance which looked at the said spin-drying | dehydration lid single body from the rear lower part. FIG. 9 is a partial cross-sectional view along the X10-X10 direction in FIG. FIG. 3 is a plan view showing a schematic configuration of a brake mechanism shown in FIG. 2. It is a perspective view which shows the spin-drying | dehydration lid of a prior art example. It is a perspective view which shows the dehydration lid | cover of the said prior art example seen from the direction opposite to FIG.

Embodiment

Hereinafter, embodiments will be described with reference to FIGS. 1 to 11. In these drawings, the same reference numerals indicate the same or similar parts.

1 and 2 show a schematic configuration of a two-tank washing machine according to the embodiment. FIG. 1 is a perspective view showing an appearance of the washing machine. FIG. 2 is an enlarged view of a longitudinal section of the washing machine as viewed from the front side. In FIG. 1 and FIGS. 3 and 8 referred later, each direction of the washing machine referred to in the following description is displayed.

The washing machine body 10 includes a base 11, a tank body 12, and a top cover 15. The base 11 has a rectangular parallelepiped shape. A tank body 12 is provided on the base 11. The tank body 12 is made of plastic. The cross section of the tank body 12 is the same as the cross section of the base 11. A washing tub 13 and a dewatering receiving tub 14 are integrally provided in the tub body 12 so as to be juxtaposed on the left and right. A top cover 15 is attached to the top of the tank body 12. Although not shown in detail, the top cover 15 has an opening 15 a corresponding to the upper surface opening of the washing tub 13 and an opening 15 b corresponding to the upper surface opening of the dehydration receiving tank 14. . An operation unit 16 is provided at the rear portion of the top cover 15 so as to be adjacent to the washing lid 23 and the dehydrating lid 24. The operation unit 16 includes, in order from the left, a washing timer operation knob 17, a washing water flow intensity switching operation knob 18, a dehydration timer operation knob 19, a drain valve opening / closing operation knob 20, and a water supply. A hose connection port 21 is provided.

A rear cover 22 is provided on the upper side of the operation unit 16. Each of the operation knobs 17 to 19 and the water supply hose connection port 21 protrude upward from the rear cover 22. A washing lid 23 is detachably provided on the top cover 15. The washing lid 23 is positioned above the left washing tub 13 and can open and close the upper surface opening of the washing tub 13. Furthermore, a dehydrating lid 24 is provided on the top cover 15 so as to be pivotable in the vertical direction with a rear shaft portion as a fulcrum as will be described later. The dehydration lid 24 is positioned above the right-side dehydration receiving tank 14 and can open and close the upper surface opening of the dehydration receiving tank 14.

As shown in FIG. 2, in the washing tub 13, a pulsator 26 is rotatably supported on the bottom 13a of the washing tub 13, as will be described later. Further, a drain port (not shown) is formed in the bottom portion 13 a of the washing tub 13 so as to be positioned below the pulsator 26. A drainage channel 28 is connected to the drainage port via a drainage valve 27. A drainage hose can be connected to the drainage channel 28. A gear mechanism 29 is provided on the lower surface side of the bottom of the washing tub 13. The output shaft 29 a of the gear mechanism 29 penetrates the bottom portion 13 a of the washing tub 13 in a watertight and rotatable manner and protrudes into the washing tub 13. The pulsator 26 is attached to the protruding portion. The input shaft 29b of the gear mechanism 29 is directed downward. A driven pulley 30 is attached to the input shaft 29 b of the gear mechanism 29.

A washing motor 31 is disposed at a position slightly shifted from the gear mechanism 29 below the washing tub 13. A transmission belt 33 is hung between the driving pulley 32 and the driven pulley 30 attached to the rotating shaft 31 a of the washing motor 31. As a result, the pulsator 26 is rotationally driven by the washing motor 31 through the drive pulley 32, the transmission belt 33, the driven pulley 30, and the gear mechanism 29 in this order. As the pulsator 26 rotates, the laundry stored in the washing tub 13 is agitated together with the washing water for washing.

In FIG. 2, a dewatering tank 34 having a large number of dewatering holes 34a in the peripheral wall portion is rotatably disposed inside the dewatering tank 14. A dehydrating motor 35 that rotationally drives the dehydrating tank 34 is disposed below the dehydrating tank 14. Further, a brake mechanism 36 is provided so as to be positioned between the dehydrating motor 35 and the dehydrating tank 34. The brake mechanism 36 brakes the rotation of the dewatering tank 34. A drain port 14 a is provided at the bottom 13 b of the dehydration receiving tank 14. The drain port 14a is connected to the drain channel 28 via a drain pipe (not shown).

As shown in FIG. 11, the brake mechanism 36 includes a brake drum 37, a brake member 38, a tension coil spring 39 that constitutes an urging portion, and an inner wire 40 that constitutes a brake wire. The inner wire 40 is made of a twisted wire of a thin wire and has flexibility. The brake drum 37 is located between the dehydrating motor 35 and the dewatering tank 34 in FIG. 2 and is provided so as to rotate integrally therewith. And is rotatably attached to the dehydrating motor 35 side. A brake shoe 42 is attached to the inner surface of the brake member 38 on the brake drum 37 side. One end of the tension coil spring 39 is hooked on the dehydrating motor 35 side, and the other end of the tension coil spring 39 is hooked on the tip of the brake member 38. The tension coil spring 39 urges the brake member 38 in the direction of arrow A1 in FIG.

The inner wire 40 is inserted into the outer wire 43. One end portion of the outer wire 43 is fixed to the dehydrating motor 35 side, and the other end portion of the outer wire 43 is fixed to the tank body 12 in FIG. 2 via a fixture 43a. One end portion of the inner wire 40 is connected to the tip end portion side of the brake member 38, and the operation wire 44 is connected to the other end portion of the inner wire 40 via a coupling tool 40a. The operation wire 44 is made of a single hard wire. As shown in FIG. 3, the distal end portion 44 a on the side opposite to the inner wire of the operation wire 44 is hooked on the dehydrating lid 24 side. The operation of the operation wire 44 will be described later. The operation wire 44 constitutes a brake wire together with the inner wire 40.

11, the brake member 38 is pulled in the direction opposite to the arrow A1 by the inner wire 40 against the urging force of the tension coil spring 39, and is in a brake release position. At this time, the distal end portion 44a of the operation wire 44 is engaged with the dehydrating lid 24 shown in FIG. 3, more specifically, the brake engaging portion 52 of the hinge arm portion 46 of the dehydrating lid 24. 40 is pulled in the direction of arrow A2. In this state, the brake shoe 42 of the brake member 38 is separated from the outer peripheral surface of the brake drum 37, and the brake mechanism 36 is in a brake release state. When the engagement between the tip end portion 44a of the operation wire 44 and the brake engagement portion 52 is released from this state, the operation wire 44 and the inner wire 40 are opposite to the direction of the arrow A2 by the biasing force of the tension coil spring 39. The brake member 38 rotates in the direction of the arrow A1 and moves to the braking position while moving to. As a result, the brake shoe 42 comes into sliding contact with the outer peripheral surface of the brake drum 37, and the rotation of the brake drum 37, and thus the dewatering tank 34 and the dewatering motor 35 is braked.

Hereinafter, a specific configuration of the dehydrating lid 24 and related portions will be described. As shown in FIGS. 8 and 9, the dehydrating lid 24 is formed by integrally forming a lid body 45 having a shallow rectangular parallelepiped shape whose bottom surface is open and the hinge arm portion 46 by integral molding of synthetic resin. The hinge arm portion 46 is provided at the center of the rear portion of the lid body 45 so as to protrude rearward. In this case, the dehydrating lid 24 is formed of a transparent ABS resin that is an amorphous polymer among synthetic resins.

The hinge arm portion 46 is formed in an arc shape that protrudes downward when viewed from the side. The structure of the hinge arm portion 46 will be described separately on the base end portion 46a side near the lid main body 45 and the tip end portion 46b side opposite to the base end portion 46a side. A plurality of shaft portions 47 extending in the left-right direction project from the left and right end portions of the distal end portion 46b. As shown in FIGS. 3 to 7, the shaft portions 47 are rotatably supported by a plurality of shaft support portions 47a provided on the top cover 15 side. The dehydrating lid 24 is attached to the top cover 15 and thus the washing machine body 10 via a plurality of shaft portions 47 so as to be rotatable in the vertical direction.

In the hinge arm portion 46, the upper surface of the base end portion 46a is formed by a flat surface 48 having almost no unevenness. As shown in FIGS. 8 and 10, the central portion of the flat surface 48 in the heel width direction that is the axial direction of the plurality of shaft portions 47 and is the left-right direction is the highest portion 48 a. The flat surface 48 is an inclined surface that is inclined downward toward both ends of the flat surface 48 in the width direction (left-right direction). As shown in FIGS. 9 and 10, a plurality of downward ribs 49 are provided on the lower surface side of the base end portion 46a. These downward ribs 49 extend in the front-rear direction in a parallel state, thereby improving the section modulus of the hinge arm portion 46 and improving the strength.

As shown in FIG. 9, in the hinge arm portion 46, the lower surface of the front end portion 46b from the center portion in the front-rear direction is formed by a curved flat surface 50 having almost no unevenness. As shown in FIG. 8, a plurality of upward ribs 51 are provided on the upper surface side of the distal end portion 46b. The upward ribs 51 include those that extend in the front-rear direction and those that extend in the left-right direction. In the hinge arm portion 46, a portion adjacent to the plurality of upward ribs 51 is provided such that a brake engagement portion 52, a lid switch operation portion 53, and an engagement portion 54 for a torsion coil spring are engaged. It has been.

The brake engaging portion 52 is provided so as to be engaged by using an upward rib 51 extending in the left-right direction of the left rear portion when viewed from the front, and an upward convex portion is provided above the brake engaging portion 52. 52a is provided. As shown in FIG. 3 and FIG. 4, the side of the operation wire 44 in the brake mechanism 36 on the side of the distal end portion 44 a is inserted into a vertically extending cylindrical portion 55 provided at the rear portion of the top cover 15. The distal end portion 44 a protrudes upward from the cylindrical portion 55. The distal end portion 44a of the operation wire 44 is bent in an L shape. In a state where the dehydrating lid 24 is closed, the distal end portion 44a of the operation wire 44 is engaged with the brake engagement portion 52, and the operation wire 44 is pulled upward (in the direction of arrow A2) by the brake engagement portion 52. ing. Accordingly, the brake mechanism 36 in FIG. 2 is in a state in which rotation of the brake drum 37, and thus the dewatering tank 34 and the dewatering motor 35 is allowed.

When the dehydrating lid 24 in the closed state is opened, the brake engagement portion 52 shown in FIG. 4 is rotated in the direction of arrow A3, as shown in FIGS. The engagement between the portion 52 and the distal end portion 44a of the operation wire 44 is released. Further, the distal end portion 44 a of the operation wire 44 is moved in the direction opposite to the arrow A 2 by the urging force of the tension coil spring 39 and is engaged with the upper end portion of the cylindrical portion 55. Accordingly, the brake member 38 of the brake mechanism 36 in the state shown in FIG. 11 rotates to the braking position, and the brake shoe 42 comes into sliding contact with the brake drum 37. By this sliding contact, the rotation of the brake drum 37, and thus the dehydrating tank 34 and the dehydrating motor 35 is braked.

As shown in FIGS. 6 and 8, the lid switch operation portion 53 is provided in the hinge arm portion 46 by using upward ribs 51 extending in the left-right direction at the right rear portion when viewed from the front. As shown in FIGS. 3 and 3, the lid switch 57 detects the open / close state of the dehydrating lid 24, and is provided at a position above the lid switch operation unit 53 in the top cover 15. As shown in FIG. 5, the lid switch 57 has a fixed contact 58 and a movable contact 59 that contacts and separates from the fixed contact 58. In the state where the dehydrating lid 24 is closed, the upper end portion of the lid switch operation portion 53 in the hinge arm portion 46 presses the movable contact 59 to the upper fixed contact 58 side from below through the pressing portion 60. When the movable contact 59 comes into contact with the fixed contact 58, the lid switch 57 is turned on, and the dehydration motor 35 is energized. When the dehydrating lid 24 is rotated in the opening direction from the closed state, the hinge arm portion 46 is rotated in the direction of arrow A3 in FIG. With this rotation, the lid switch operation unit 53 also rotates in the same direction, and the pressing of the lid switch operation unit 53 against the pressing unit 60 is released. By releasing the pressing, the movable contact 59 is separated from the fixed contact 58, and the lid switch 57 is turned off. When the lid switch 57 is turned off, the power supply to the dehydrating motor 35 is cut off.

The torsion coil spring engaging portion 54 shown in FIGS. 3 and 8 is provided in the hinge arm portion 46 by using an upward rib 51 of the left rear portion as viewed from the front. As shown in FIGS. 3 and 4, the torsion coil spring 61 biases the dehydrating lid 24 in the closing direction when the dehydrating lid 24 is closed. The torsion coil spring 61 biases the dehydrating lid 24 in the opening direction when the dehydrating lid 24 is opened. The torsion coil spring 61 constitutes such an urging portion. As shown in FIG. 3, the one end portion 61 a of the torsion coil spring 61 is engaged with an engagement portion 62 for a torsion coil spring provided on the top cover 15. The other end portion 61 b of the torsion coil spring 61 is inserted and engaged with the engagement portion 54 for the torsion coil spring of the hinge arm portion 46.

In the state where the dehydrating lid 24 is closed, as shown in FIG. 4, the spring force of the torsion coil spring 61 acts on the hinge arm portion 46 of the dehydrating lid 24 to keep the dehydrating lid 24 closed. In this case, the action of the spring force on the hinge arm portion 46 is in the direction opposite to the arrow A3, that is, the direction in which the dehydrating lid 24 is closed. In the state where the dehydrating lid 24 is opened, as shown in FIG. 7, the spring force of the torsion coil spring 61 acts on the hinge arm portion 46 of the dehydrating lid 24 to keep the dehydrating lid 24 open. In this case, the action of the dehydrating lid 24 on the hinge arm portion 46 is in the direction of arrow A3, that is, the direction in which the dehydrating lid 24 is opened.

As shown in FIGS. 3 and 4, on the upper surface of the hinge arm portion 46, an upward partition rib 64 is provided at the boundary portion between the base end portion 46a and the tip end portion 46b. The partition rib 64 extends in the left-right direction. In the state where the dehydrating lid 24 is closed, as shown in FIG. 4, the partition rib 64 is located behind the front end portion 22 a of the rear cover 22 and behind the plurality of shaft portions 47. In the hinge arm portion 46, a plurality of drain holes 65 are provided in the flat surface 50 on the lower surface side of the tip end portion 46b.

When the dehydrating lid 24 is closed, a gap G is formed between the upper rear end 45a of the lid main body 45 in the dehydrating lid 24 and the front end 22a above the rear cover 22 as shown in FIG. Has been. The gap G is formed in order to avoid interference when the dehydrating lid 24 is rotated in the vertical direction.

In the above-described configuration, the dehydrating lid 24 is formed of a transparent ABS resin that is an amorphous polymer, so that the appearance can be improved.

In a state where the dehydrating lid 24 is closed, a load in a direction to open the two dehydrating lids 24 is acting on the hinge arm portion 46 of the dehydrating lid 24. One of these loads is a load from the distal end portion 44a (shown in FIG. 4) of the operation wire 44 in the brake mechanism 36 of FIG. 11, and the other of the loads is a pressing portion 60 (see FIG. 5). Furthermore, a load in the direction of closing the dehydrating lid 24 is acting from the other end portion 61 b (shown in FIGS. 3 and 4) of the torsion coil spring 61. In the state where the dehydration lid 24 is opened, the hinge arm portion 46 of the dehydration lid 24 is in a state where a load in the direction of opening the dehydration lid 24 from the other end portion 61 b of the torsion coil spring 61 is applied. As described above, the hinge arm portion 46 of the dehydrating lid 24 is in a state where a load from the outside is always applied.

In the above configuration, as shown in FIGS. 4 and 5, when the dehydrating lid 24 is closed, the upper rear end portion 45 a of the lid main body 45 in the dehydrating lid 24 and the front end portion 22 a of the upper portion of the rear cover 22 A gap G is formed between them. For this reason, there is a situation in which the detergent itself or the washing water containing the detergent easily hangs on the upper surface of the base end portion 46a of the hinge arm portion 46 through the gap G. For this reason, when the state which the washing water containing detergent itself or a detergent adheres to the hinge arm part 46 continues, we are anxious about a solvent crack being easy to generate | occur | produce. In particular, when the dehydrating lid 24 is formed of an ABS resin that is an amorphous polymer, the solvent crack is likely to occur.

In this regard, in the present embodiment, in the hinge arm portion 46, a flat surface 48 having almost no unevenness is formed on the upper surface of the base end portion 46a. For this reason, even if the washing water containing the detergent or the detergent is applied to the flat surface 48 on the upper surface of the base end portion 46a through the gap G, the detergent or the washing water easily flows down along the flat surface 48 to the outside. Therefore, it is prevented that detergent and washing water remain there. In particular, in the present embodiment, the flat surface 48 is a slope inclined downward toward the left and right ends with the central portion in the left-right direction being the highest portion 48 a, so that detergent and washing water can be removed from the flat surface 48. It will flow down as quickly as possible. With such a configuration, it is possible to prevent the occurrence of solvent cracks as much as possible while forming the dehydration lid 24 with an ABS resin that is an amorphous polymer.

As shown in FIGS. 4 and 5, the distal end portion 46 b of the hinge arm portion 46 is covered from above with the rear cover 22 of the operation portion 16 with the dehydrating lid 24 closed. Therefore, there is no possibility that the detergent or the detergent water is directly applied to the upper surface of the distal end portion side 46b of the hinge arm portion 46. Further, on the upper surface of the hinge arm portion 46, an upward partition rib 64 is provided at a boundary portion between the base end portion 46a and the tip end portion 46b. For this reason, even when the detergent or the detergent water is applied to the upper surface (flat surface 48) of the base end portion 46a, the partition rib 64 can prevent the detergent or the washing water from flowing toward the tip end portion 46b.

In the case of the structure of the conventional dehydrating lid 1 shown in FIGS. 12 and 13, a plurality of upward ribs (only 5 a) are formed as a plurality of ribs on the upper surface side of the base end portion of the hinge arm portion 3. It has become. For this reason, when detergent or washing water is applied to the upward rib 5a portion of the base end portion of the hinge arm portion 3, the detergent or washing water tends to stay for a long time between a plurality of adjacent upward ribs 5a. Is likely to occur.

In the dehydrating lid 24 of the present embodiment, as shown in FIG. 8, the upper surface side of the distal end portion 6 b of the hinge arm portion 46 is constituted by a plurality of upward ribs 51. Further, a brake engagement portion 52, a lid switch operation portion 53, and an engagement portion 54 for a torsion coil spring are provided so as to be engaged using these upward ribs 51. For this reason, when setting the height of the engaging part 52 for brakes, the lid switch operation part 53, the engaging part 54 for torsion coil springs, etc., the setting can be performed relatively easily.

In the hinge arm portion 46, it is also conceivable to form a flat surface 48 having almost no irregularities so as to extend from the upper surface of the base end portion 46a to the upper surface of the distal end portion 46b. However, if the upper surface of the tip end portion 46b is also formed by the flat surface 48, setting and designing are difficult when setting the brake engaging portion 52, the lid switch operating portion 53, the engaging portion 54, and the like. According to the present embodiment, since these parts can be adjusted only by the height of the rib, such inconvenience does not occur.

As shown in FIG. 7, in the structure of the dehydrating lid 24 of the present embodiment, when the dehydrating lid 24 is opened, the plurality of downward ribs 49 of the base end portion 46 a in the hinge arm portion 46 are formed in the laundry of FIG. 2. It can be seen well from the front of the machine body 10. By forming the entire dehydrating lid 24 with a transparent resin, the downward ribs 49 can be made inconspicuous, so that the appearance can be prevented from being lost as much as possible.

The resin forming the dehydration lid 24 is not limited to a transparent ABS resin, and an AS resin or a PS resin can be used as long as it is an amorphous polymer. In the present embodiment, a two-tank washing machine is illustrated, but the above-described structure can also be applied to a fully automatic washing machine having a single tank. In this case, the water tank of the fully automatic washing machine corresponds to the dehydration receiving tank 14, and the rotation tank of the fully automatic washing machine constituting the washing and dewatering tank rotatably disposed in the water tank corresponds to the dehydration tank 34. To do. Further, the lid that opens and closes the opening of the water tank of the fully automatic washing machine corresponds to the dehydration lid 24.

As described above, according to the washing machine of the present embodiment, the appearance of the dehydrating lid can be improved by forming the dehydrating lid with an amorphous polymer. In addition, while the dehydrating lid is formed of an amorphous polymer, the upper surface on the base end side of the hinge arm portion of the dehydrating lid is formed as a flat surface, so that the flat surface portion is covered with detergent or washing water. Even so, they are easy to flow down, and it is difficult to generate solvent cracks. Further, the upper surface on the tip end side of the hinge arm portion has an upward rib, and the brake engagement portion is provided by using the upward rib so that the height of the brake engagement portion can be adjusted. Setting can be performed relatively easily.

Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 10 Washing machine main body 14 Dehydration receiving tank 24 Dehydration lid 34 Dehydration tank 35 Dehydration motor 36 Brake mechanism 37 Brake drum 38 Brake member 39 Tension coil spring 40 Inner wire 44 Operation wire 45 Lid main body 46 Hinge arm part 46a Base end part 46b Tip part 47 Shaft portion 48 Flat surface 49 Downward rib 50 Flat surface 51 Upward rib 52 Brake engagement portion 53 Lid switch operation portion 54 Torsion coil spring engagement portion 57 Lid switch 61 Torsion coil spring 64 Partition rib G Gap

Claims

A washing machine body having a dewatering tank;
A dehydration tank rotatably provided in the dehydration receiving tank and rotated by a driving unit;
A lid body and a hinge arm part are integrated, and the hinge arm part is pivotally attached to the washing machine body through a shaft part so that the upper surface opening of the dewatering tank can be opened and closed. A dehydrating lid,
A brake engaging portion provided on the distal end side of the hinge arm portion on the opposite side to the proximal end side near the lid body;
A brake mechanism including a brake drum, a brake member, an urging portion, and a brake wire, wherein the brake drum is provided so as to rotate together with the dewatering tank, and the brake member is slidably contacted with the brake drum at a braking position. The rotation of the dewatering tank can be braked, the urging portion can urge the brake member toward the braking position, and one end of the brake wire is connected to the brake member, The other end portion of the brake wire can be engaged and disengaged from the brake engagement portion. When the dehydrating lid is closed, the brake engagement portion is engaged with the brake wire. The brake member is positioned at a braking release position against the urging force of the urging portion to allow the dehydration tank to rotate, and the dehydration lid is opened. In addition, the engagement between the brake engaging portion and the brake wire is disengaged, and the brake member is moved to the braking position by the urging force of the urging portion, and the dehydrating tub is rotated through the brake drum. In a washing machine equipped with a brake mechanism for stopping
The dehydrating lid is formed by integrally molding the lid main body and the hinge arm portion with an amorphous polymer,
A flat surface is formed on the upper surface of the base end portion of the hinge arm portion near the lid body, and has a downward rib on the lower surface side of the base end portion, opposite to the base end portion of the hinge arm portion. The lower surface of the tip portion is formed as a flat surface, and has an upward rib on the upper surface side of the tip portion,
The brake engaging portion is a washing machine provided in the hinge arm portion using the upward rib.
The washing machine according to claim 1, wherein the flat surface of the upper surface of the base end portion is inclined in the hinge arm portion.
In the hinge arm part, the flat surface of the upper surface of the base end part is inclined downward toward both ends in the width direction, with the center part in the width direction being the axial direction of the shaft part being the highest part. The washing machine according to claim 2.
The washing machine according to any one of claims 1 to 3, wherein an upward partitioning rib is provided at a boundary portion between the base end portion and the tip end portion on an upper surface of the hinge arm portion.
The washing machine according to any one of claims 1 to 4, wherein the dehydrating lid is made of any one of ABS, AS, and PS.
The washing machine main body has an operation unit adjacent to the dehydration lid, and includes a cover above the operation unit, between the end of the lid main body and the upper end of the cover in the dehydration lid, The washing machine according to claim 1, wherein a gap G is formed.