JP4544105B2 - Drum washing machine - Google Patents

Description

  The present invention relates to a drum type washing machine, and more particularly to a configuration of a lid for preventing the laundry from jumping out in a casing of the drum type washing machine.

  Conventionally, a lid for preventing the laundry and detergent in the washing machine casing from jumping out of the machine body is held in the casing of the drum type washing machine so as to be freely opened and closed (see, for example, Patent Document 1). ).

  FIG. 6 is a cross-sectional view of a main part showing a configuration of a lid of a conventional general drum type washing machine. In FIG. 6, in the washing machine housing 101, there are provided a rotating drum 102 for storing laundry and a water tank 103 for rotatably enclosing the rotating drum 102. An opening 104 for taking in and out laundry is formed on the front surface of the washing machine casing 101, and a lid 105 is formed on the front surface of the washing machine casing 101 by a rotating shaft portion 106 and a connecting member 107. The opening 104 is held openably and closably.

  The lid 105 includes a lid main body 108 having an opening substantially in the center and molded from polypropylene, a lid back plate 109 having an opening substantially in the center and molded from polypropylene, and a lid body 108 and the lid backing plate. 109 and a transparent window 110 formed of glass so that the laundry in the rotating drum 102 does not jump out. The transparent window 110 is sandwiched between the lid body 108 and the lid back plate 109. ing. On the other hand, almost the entire opening of the lid main body 108 is covered with a lid cover 111 formed of transparent ABS so that the movement of the laundry in the rotary drum 102 can be seen through the lid cover 111 and the transparent window 110.

  In addition, the lid body 108 is formed of polypropylene as described above because the transparent window 110 formed of glass is sandwiched between the lid back plate 109, and in the case of polypropylene, the surface sink generated at the time of molding is formed. Since the appearance is not good due to poor gloss and the like, the surface is painted to improve the appearance.

  A claw 108 a is provided on the lid body 108 side, and a claw 111 a is provided on the lid cover 111 side, and the lid cover 111 is fixed to the lid body 108. The connecting member 107 is fixed to the fixing boss 108 b of the lid main body 108 with a fixing screw 112.

  The operation of the drum type washing machine configured as described above will be described below. Water and detergent are added to the laundry in the rotating drum 102, and the rotating drum 102 is rotated by a motor (not shown). At this time, the detergent scattered by the rotation of the laundry also adheres to the transparent window 110. When the laundry is taken in and out, the detergent travels through the transparent window 110 and adheres to the lid body 108 and the lid back plate 109. Therefore, the lid body 108 and the lid back plate 109 are made of a resin material having high chemical resistance such as polypropylene, as described above, so as not to be damaged by detergents or other chemicals.

In addition, the fixed boss 108b for tightening the connecting member 107 has a large diameter so that the load of the lid main body 108 and the transparent window 110 having a mass is applied in a concentrated manner so as not to break and break. Furthermore, the claw 108a and the claw 110a are always fitted with stress so that the lid cover 111 does not vibrate during washing and dehydration. In addition, the gap between the lid body 108 and the lid backing plate 111 is made smaller than the thickness of the mounting portion of the transparent window 106 so that the transparent window 110 having a large mass does not vibrate due to vibration during washing and dehydration. ing. Accordingly, the lid back plate 111 is always subjected to stress, and the detergent is easy to adhere to it, so that it is elastic and molded from polypropylene that is resistant to chemicals.
Japanese Patent Laid-Open No. 2004-8683

However, in the conventional drum-type washing machine, the lid body 108 is molded from polypropylene that is strong against chemicals and has high strength. The appearance was impaired due to poor gloss and scratches on the surface. Therefore, there is a method of coating the surface in order to enhance the aesthetics, but at that time, it is difficult to cause a chemical change on the surface, and it is extremely difficult to give sufficient adhesion strength. In order to improve the adhesion of the coating, it was necessary to roughen the surface of the lid main body 108 with a chemical or the like, but for that purpose, it was necessary to use a material with reduced chemical resistance. However, if the chemical resistance is lowered, it becomes easy to be damaged by a detergent or the like, so it is difficult to select an appropriate material.

  In addition, the lid cover 111 is fixed by fitting the claws 108a and 111a. However, since the lid body 108 has a structure in which stress is applied to the lid body 108, the use of a material with reduced chemical resistance further damages due to creep or the like. There was a problem that it was likely to occur. Similarly, in order to prevent damage to the fixed boss 108b to which a load is applied, the material for molding the lid main body 108 needs to have mechanical strength, such as chemical resistance, paint adhesion, creep strength, and mechanical strength. Selecting materials with all of the strengths was even more difficult.

  Further, the lid cover 111 was made transparent in order to see the movement of the laundry inside, but since the shape of the claw 111a was visible from the front of the lid cover 111, it was difficult to improve the beauty. Since almost the entire lid cover 111 is an appearance portion, it has been difficult to display a material display corresponding to, for example, a recent demand for a highly recycling society.

  In addition, since the transparent window 110 is sandwiched between the lid back plate 109 and the lid main body 108, the gap between the lid main body 108 and the lid back plate 109 is set to the transparent window 106 if the transparent window 110 is securely fixed. The tightening margin had to be increased by making it smaller than the thickness of the outer peripheral mounting portion. However, as the tightening margin is increased, a gap is easily formed between the outer peripheral portion of the lid main body 108 and the lid back plate 109, and there are problems in appearance, and foreign substances such as detergent and water enter the inside of the lid body 105. It was easy to cause deterioration of internal parts and rust of metal parts. Further, as the tightening margin is increased, a greater stress is applied to the lid main body 108 and the lid back plate 109, making it difficult to select a material.

  The present invention solves the above-mentioned conventional problems, and provides a drum type washing machine having a lid structure that has a simple structure, improves appearance, is not easily damaged by chemicals, and has sufficient strength. With the goal.

In order to solve the above-described conventional problems, a drum-type washing machine according to the present invention includes a rotating drum that stores laundry and is driven to rotate, a water tank that includes the rotating drum, a water tank that stores the water tank, and the rotating drum. the washers housing having an opening for introducing laundry, the washing machine housing rotatably axially supported and a lid for opening and closing the opening, the lid of the previous SL a lid body having a first opening from the outside of the washing machine housing and through the inside of the rotary drum, a second opening penetrating from the outside of the front Washer casing inwardly of said rotary drum wherein a decorative plate covering the lid body, and a lid cover for covering the first opening and the second opening, a third opening penetrating from the outside of the front Washer casing inwardly of said rotary drum having a lid back plate which has covered a rear surface of the lid main body, et provided on the rotary drum side of the first opening of the lid body A transparent window formed of glass or the like, and the transparent window has an outer peripheral edge sandwiched between a first opening edge of the lid body and a third opening edge of the lid back plate, and the lid cover The outer peripheral edge is sandwiched between the first opening edge of the lid body and the second opening edge of the decorative board, and a claw that protrudes inward is provided on the outer peripheral edge of the decorative board. The lid body is configured to be engaged with the outer peripheral back surface, ensuring chemical resistance, creep strength, and mechanical strength of the lid body, and assembling of the lid body is facilitated . Can be improved.

The drum type washing machine of the present invention has a simple configuration, improves appearance, is not easily damaged by chemicals, facilitates assembly of the lid, and can provide a lid having sufficient strength.

A first aspect of the present invention is a laundry having a rotating drum that accommodates laundry and is driven to rotate, a water tub that contains the rotating drum, and an opening that accommodates the water tub and puts laundry into the rotating drum. a machine housing, the washing machine housing rotatably axially supported on a lid body for opening and closing the opening, the lid body is inside of the rotary drum from the outside of the front Washer housing a lid body having a first opening penetrating in a front SL from the outside of the washing machine casing has a second opening extending through the inside of the rotating drum to cover the lid body decorative plates, the first Futauraban covering a lid cover for covering the first opening and the second opening, the rear surface of the lid body has a third opening penetrating from the outside of the front Washer casing inwardly of said rotary drum And a transparent window formed of glass or the like provided on the rotating drum side of the first opening of the lid body, The window has an outer peripheral edge sandwiched between the first opening edge of the lid body and the third opening edge of the lid back plate, and the cover cover has an outer peripheral edge of the first opening edge of the lid body. It is configured to be sandwiched between the edges of the second opening of the decorative plate, provided with a claw that protrudes inward on the outer peripheral edge of the decorative plate, and the claw is configured to be locked to the outer peripheral back surface of the lid body By adopting a drum-type washing machine, the decorative board does not need to hold heavy parts, so there is no need for creep strength and mechanical strength, and materials such as ABS that have good coating adhesion and surface finish after molding. Can be used, and the appearance can be improved with a simple structure, and if the lid body is made of chemical resistant, creep strength, mechanical strength polypropylene, etc., it will be damaged by chemicals. A lid structure that is not easily damaged and has sufficient strength. In addition, the lid cover, because it is sandwiched between the lid body veneer, does not require high creep strength, it becomes easy to material selection, the difference et al, it is possible to hide the lid cover the outer peripheral portion in veneer Therefore, a stamp such as a material display can be displayed on the periphery of the lid cover.

Also, when producing a drum-type washing machine, the lid body, lid cover and decorative plate can be unitized first, then a transparent window can be placed and finally the lid backing plate can be attached. Assembly becomes easy, unitized assembly becomes possible, and productivity can be improved.

In the second aspect of the invention, in particular, the tip of the outer peripheral edge of the decorative plate is radially directed at the outer peripheral edge of the lid backing plate in a state where the claws of the drum type washing machine of the first invention are locked to the outer peripheral back surface of the lid main body. By being configured to be covered from the outside, it is possible to reliably hold the claw.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is an external perspective view of the drum type washing machine according to the first embodiment of the present invention, FIG. 2 is a cross-sectional view of the main part near the lid of the drum type washing machine, and FIG. 3 is the drum type washing machine. It is principal part sectional drawing of the cover body of a machine.

  In FIG. 1, an upwardly inclined surface 1a is formed at the upper part on the front side of the washing machine casing 1, and a circular opening 2 through which laundry is taken in and out is formed on the inclined surface 1a. A circular lid 3 that covers the opening 2 so as to be freely opened and closed is provided on the upward inclined surface 1 a of the washing machine housing 1.

As shown in FIG. 2, a washing tub 4 for storing washing water is supported in a swingable manner inside the washing machine casing 1, and laundry is accommodated in the tub 4 and rotated. A rotating drum 5 for washing is provided rotatably. The rotary drum 5 is rotationally driven by a motor (not shown).

  The lid 3 is connected to a flat portion 7 a of a connecting member 7 that is rotatably supported by a rotating shaft 6 provided in the washing machine casing 1, and is rotatably held so as to open and close the opening 2. A lid body 8 made of polypropylene, a lid back plate 9 made of polypropylene with high chemical resistance, a transparent window 10 made of glass, a lid cover 11 made of transparent ABS, and a chemical resistant ABS It is comprised from the decorated decorative board 12 grade | etc.,.

  The lid body 8 has a substantially annular shape, and is provided with a lid body inner wall 8a erected from the outer side of the washing machine housing 1 toward the inner side of the rotating drum 5 at a substantially central portion thereof. A penetrating first opening 8b is formed. The lid back plate 9 has a substantially annular shape, is provided inside the lid body 8, and has a third opening 9 a having substantially the same shape as the first opening 8 b at the substantially central portion thereof, and its outer peripheral portion. A lid back plate outer wall 9b is formed so as to stand from the inner side of the rotating drum 5 toward the outer side of the washing machine casing 1.

  Transparent windows 10 formed of glass or the like are provided in the first opening 8b and the third opening 9a. The transparent window 10 has a substantially concave shape so as to be concave on the rotating drum 5 side, and a flange portion 10a protruding in the outer peripheral direction is provided on the upper end portion of the transparent window 10 on the substantially entire circumference. The flange portion 10a is sandwiched between the distal end portion of the lid main body inner wall 8a and the inner surface of the inner periphery of the third opening 9a. A boss 8d having a hole 8c at its tip is provided on the inner surface side of the lid body 8, and a through hole 9c is provided in the lid back plate 9 at a position corresponding to the boss 8d. 8 and the lid back plate 9 are fixed by fastening the screw 13 to the hole 8c of the boss 8d through the through hole 9c in a state where the flange 10a of the transparent window 10 is sandwiched. Further, on the outer surface side of the lid body 8, a meat stealing hole 8i for stealing meat is formed at a position corresponding to the boss 8d.

  On the outer side surface of the washing machine casing 1 on the base side of the lid body inner wall 8 a of the lid body 8, an inner peripheral step portion 8 e that is lowered by one step is formed. The lid cover 11 is provided on the outer peripheral edge of the lid cover 11. A lid cover flange portion 11a formed at a position one step lower than the surface is accommodated. On the outer side of the washing machine casing 1 of the lid main body 8, a decorative plate 12 having a second opening 12a that is an opening having substantially the same shape as the first opening 8b of the lid main body 8 is provided, and a lid cover flange portion is provided. In a state in which 11a is accommodated in the inner peripheral step portion 8e, the inner surface of the inner periphery of the second opening 12a of the decorative plate 12 covers the cover cover flange portion 11a from the outside to sandwich the cover cover 11.

  Further, as shown in FIG. 3, a decorative plate outer peripheral wall 12 b that protrudes toward the cover back plate 9 is formed on the outer periphery of the decorative plate 12, and the tip of the cover back plate outer wall 9 b of the cover back plate 9 is An outer peripheral step portion 9d that is lowered by one step so as to correspond to the decorative plate outer peripheral wall 12b is formed. Claws 12c that protrude inward at a plurality of locations are formed on the inner surface side of the decorative plate outer peripheral wall 12b, and hooking recesses 9e corresponding to the claw 12c are formed on the outer surface of the outer peripheral step portion 9d. The decorative plate 12 is configured to be fixed to the front surface side of the lid main body 8 by locking the 12c to the hooking recess 9e. For example, 12 sets of claw 12c and hook recess 9e are provided at a pitch of 30 degrees.

  At a position corresponding to the flat portion 7 a of the connecting member 7, a boss 8 g having a hole portion 8 f at the front end portion is erected on the inner surface side of the lid main body 8. A mounting portion 9f that is lowered by one step so as to correspond to 7a is formed, and the through-hole 7b and the mounting portion 9f of the lid backing plate 9 are respectively formed in the flat portion 7a of the connecting member 7 and the mounting portion 9f of the cover back plate 9 so as to correspond to the hole portion 8f of the boss 8g. A through hole 9g is provided, and the lid body 8, the lid back plate 9, and the flat portion 7a of the connecting member 7 are screwed into the hole 8f of the boss 8g via the through hole 9g and the through hole 7b. Thus, the lid 3 and the connecting member 7 are fixed. Further, on the outer surface side of the lid body 8, a meat stealing hole 8h for stealing meat is formed at a position corresponding to the boss 8g.

  Further, the upward inclined surface 1a of the washing machine housing 1 is provided with a recess 1b so that the lid 3 is accommodated, and the opening 2 and the connecting member 7 are inserted into the bottom surface 1c constituting the bottom. A slit hole 1d is provided.

  In response to the recent demand for a highly recyclable society, a material display is stamped on the cover cover flange portion 11a on the outer periphery of the cover cover 11. Thereby, in the state of the assembled lid body 3, since the lid cover flange part 11a is covered with the decorative board 12, it has a structure which cannot be seen from the outside.

  Further, the bosses 8d are arranged at almost constant intervals on almost the entire circumference of the lid body 8. For example, six are formed and provided at positions that do not interfere with the positions of the claw 12c and the hook recess 9e.

  Further, the gap g1 between the front end portion of the lid main body inner wall 8a and the inner peripheral inner surface of the third opening 9a is smaller than the thickness g2 of the flange portion 10a of the transparent window 10 to increase the tightening margin. For example, the gap g1 is 5 mm, the mounting portion thickness g2 is 5.5 mm, and the tightening margin is set to 0.5 mm. Thereby, shakiness of the transparent window 10 is prevented.

  As described above, according to the present embodiment, since the decorative board 12 does not need to hold heavy parts, there is no need for creep strength and mechanical strength, and paint adhesion such as ABS or the surface after molding. It is possible to use a material with good finish or a material with high coating adhesion strength, and the appearance can be improved with a simple configuration.

  In addition, since the transparent lid cover 11 is sandwiched between the lid body 8 and the decorative plate 12, high creep strength is not required, and it is easy to select a material that improves aesthetics. Therefore, it is possible to improve the beauty from the front of the lid cover. And since the outer peripheral part of the transparent cover cover 11 can be hidden with the decorative board 12, even if it displays inscriptions, such as a material display, on the peripheral part of the cover cover 11, it can be made not visible from the outside. .

  Further, since the surface of the lid body 8 is hidden behind the decorative board 12 and is not visible from the outside, there is no need to consider sink marks during molding, and a material with excellent chemical resistance, creep resistance, and mechanical strength is selected. Can do.

  Further, even if the fastening margin when fixing the transparent window 10 is large and the transparent lid 10 is securely fixed, or the lid body 8 and the lid back plate 9 are elastically deformed, the decorative plate 12 and The lid backing plate 9 is such that the claw 12c provided on the outer periphery of the decorative backing plate 12 is engaged with the hook recess 9e of the lid backing plate 9, so that the decorative backing plate 12 and the lid backing plate outer wall 9b of the lid backing plate 9 It becomes difficult to create a gap between the front end and the external appearance, and foreign substances such as detergent and water are less likely to enter the inside of the lid 3, which causes deterioration of internal parts and rusting of metal parts. It is hard to generate.

  Further, since the drum type washing machine has the detergent case 15 provided above the lid body 3, the detergent is easily applied to the lid body 3. However, as described above, the lid body 8 and the lid back plate 9 are attached. The decorative board 12 is formed of a material having an excellent appearance without reducing chemical resistance, creep resistance, and mechanical strength by using polypropylene having excellent chemical resistance, creep resistance, and mechanical strength. Thereby, the drum type washing machine excellent in appearance can be provided.

(Embodiment 2)
FIG. 4 is a cross-sectional view of the main part in the vicinity of the lid of the drum type washing machine according to the second embodiment of the present invention, and FIG. 5 is a cross-sectional view of the main part of the cover of the drum type washing machine. In addition, the thing of the same structure as Embodiment 1 attaches | subjects the same code | symbol, and abbreviate | omits description.

  4 and 5, a decorative plate outer peripheral wall 12d protruding toward the cover back plate 9 is formed in the vicinity of the outer periphery of the decorative plate 12, and the inner surface of the decorative plate outer peripheral wall 12d is inwardly directed at a plurality of locations. A convex nail 12e is formed, and the nail 12e is engaged with the back surface of the outer peripheral portion 8j of the lid body 8, so that the decorative plate 12 is fixed to the front surface side of the lid body 8. . For example, 12 pairs of claws 12e are provided at a pitch of 30 degrees.

  An outer peripheral step portion 9i that is lowered by one step so as to correspond to the decorative plate outer peripheral wall 12d is formed inside the lid rear plate outer wall 9h at the front end portion of the cover rear plate outer wall 9h. Thereby, the outer peripheral wall 9j of the outer peripheral step portion 9i is configured to cover the decorative plate outer peripheral wall 12b from the outside. Moreover, the front-end | tip of the outer peripheral wall 9j is comprised so that it may contact | abut on the back surface of the outer periphery 12f of the decorative board 12 of the outer side of the decorative board outer peripheral wall 12d.

  With this configuration, when producing a drum type washing machine, the cover cover flange portion 11 a of the cover cover 11 is accommodated in the inner peripheral step portion 8 e of the cover body 8, and the decorative plate 12 is attached from the surface side of the cover body 8. Then, the claw 12e on the inner surface side of the decorative plate outer peripheral wall 12d is engaged with the back surface of the outer peripheral portion 8j of the cover main body 8, so that the cover main body 8, the cover cover 11, and the decorative plate 12 are made into a unit first. After that, the flange portion 10a of the transparent window 10 is placed on the distal end portion of the lid body 8 of the lid body 8, the lid cover 11, and the decorative plate 12 that are unitized, and the lid back plate 9 is fixed with screws 13. Yes.

  Thereby, the unitization assembly of the lid body 8, the lid cover 11, and the decorative board 12 as the lid body 3 becomes possible, and the productivity can be improved.

  In addition, since the outer peripheral wall 9j of the outer peripheral step portion 9i covers the decorative plate outer peripheral wall 12b from the outside, the claw 12e can be locked to the back surface of the outer peripheral portion 8j of the lid main body 8 as the lid body 3. It does not come off easily, and quality can be improved.

  Moreover, since the front-end | tip of the outer peripheral wall 9j is comprised so that it may contact | abut to the back surface of the outer periphery 12f of the decorative board 12 of the outer side of the decorative board outer peripheral wall 12d, the outer peripheral wall 9j of FIG. Since the tip portion is hidden behind the outer peripheral edge of the decorative plate 12 and cannot be seen, the appearance of the lid 3 can be improved.

  In the first and second embodiments, the lid body 8, the lid back plate 9, the transparent window 10, the lid cover 11, and the decorative plate 12 constituting the lid body 3 are annular or disk-shaped, but are polygonal, For example, the same effect can be obtained even when the shape is a quadrangular shape.

  As described above, the drum type washing machine according to the present invention has a simple structure, improves the aesthetics of the appearance, is hardly damaged by chemicals, and provides a lid structure having sufficient strength. It can be widely applied to devices that require lids with excellent properties, chemical resistance and strength.

1 is an external perspective view of a drum-type washing machine according to Embodiment 1 of the present invention. Cross-sectional view of the main part near the lid of the drum type washing machine Cross section of the main part of the lid of the drum type washing machine Sectional drawing of the principal part near the cover body of the drum type washing machine in Embodiment 2 of this invention. Cross section of the main part of the lid of the drum type washing machine Sectional view of the main part of a conventional drum-type washing machine

DESCRIPTION OF SYMBOLS 1 Washing machine housing | casing 2 Opening part 3 Lid body 4 Water tank 5 Rotating drum 8 Lid main body 8b 1st opening part 9 Lid back plate 9a 3rd opening part 10 Transparent window 11 Lid cover 12 Decorative plate 12a 2nd opening part

Claims (2)

A rotating drum that accommodates the laundry and is driven to rotate; a water tub containing the rotating drum; a washing machine housing having an opening for storing the water tub and putting the laundry into the rotating drum; washing machine frame rotatably axially supported on a lid body for opening and closing the opening, wherein the lid has a first opening from the outside of the front Washer casing penetrating the inside of the rotating drum a lid body having a section, before Washer and decorative plate having a second opening to cover the lid body from the outside of the housing to penetrate the inside of the rotary drum, the first opening and the second a lid cover for covering the opening, a front Washer lid backing plate from the outside of the housing covering the rear surface of the lid body has a third opening extending through the inside of the rotary drum, said lid body A transparent window formed of glass or the like provided on the rotary drum side of the first opening, the transparent window having an outer peripheral edge The lid cover is sandwiched between the first opening edge of the lid main body and the third opening edge of the lid backing plate, and the outer periphery of the lid cover is the first opening edge of the lid main body and the second opening of the decorative plate. A drum-type washing machine configured to be sandwiched between edges, provided with a claw protruding inwardly on an outer peripheral edge of the decorative plate, and the claw being engaged with an outer peripheral back surface of the lid body . The drum-type washing machine according to claim 1, wherein the tip of the outer peripheral edge of the decorative plate is covered from the outer peripheral edge of the cover back plate from the outside in the radial direction in a state where the nail is engaged with the outer peripheral back surface of the lid main body .