EP2980298A1 - Kappe für einen laugenbehälter für einen waschautomaten, waschautomat und verfahren zum herstellen einer kappe für einen laugenbehälter - Google Patents

Kappe für einen laugenbehälter für einen waschautomaten, waschautomat und verfahren zum herstellen einer kappe für einen laugenbehälter Download PDF

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Publication number
EP2980298A1
EP2980298A1 EP15174813.4A EP15174813A EP2980298A1 EP 2980298 A1 EP2980298 A1 EP 2980298A1 EP 15174813 A EP15174813 A EP 15174813A EP 2980298 A1 EP2980298 A1 EP 2980298A1
Authority
EP
European Patent Office
Prior art keywords
cap
potting compound
tub
base body
balance weight
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP15174813.4A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2980298B1 (de
Inventor
Andreas Kratzsch
Frank Jückemöller
Kai Eckmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Miele und Cie KG
Original Assignee
Miele und Cie KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Miele und Cie KG filed Critical Miele und Cie KG
Priority to PL15174813T priority Critical patent/PL2980298T3/pl
Publication of EP2980298A1 publication Critical patent/EP2980298A1/de
Application granted granted Critical
Publication of EP2980298B1 publication Critical patent/EP2980298B1/de
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Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/26—Casings; Tubs
    • D06F37/265—Counterweights mounted to the tub; Mountings therefor

Definitions

  • the invention relates to a cap for a tub for a washing machine, a tub, a washing machine and a method for producing a cap for a tub.
  • the tub can be provided with additional weight.
  • the invention thus has the problem of providing an improved cap for a washing machine tub, an improved tub, an improved washing machine, and an improved method for making a cap for a tub.
  • the achievable with the present invention consist in a cost-effective production of a cap suitable for a tub in which no final assembly process between an already formed balance weight and a base of the cap is required.
  • a washing drum of the washing machine can be rotatably mounted.
  • the cap can be considered as a component of the tub in the assembled state.
  • the cap may be formed as a lid or bottom for a cylindrical side wall of the tub.
  • the main body can be made of plastic or metal. If the base body is made of plastic, the base body may be an injection molded part. Then, the fastening webs may be molded onto the body. If the base body is made of metal, the base body may be a deep-drawn part. Then the fastening webs can be welded to the base body.
  • the main body may have at an outer circumferential edge a suitably shaped interface for connecting the base body to the side wall of the tub. At least three fastening webs can be provided.
  • the fastening webs can be designed as ribs which protrude over a base surface of the base body.
  • the potting compound may be suitable to be pressed with the base body using a punch of an injection molding tool.
  • the base body may be arranged in a mold half of the injection molding tool. As a result, the potting compound can be pressed, for example, to a press concrete balance weight for a washing machine.
  • the fastening webs may each have a receptacle, for example a recess for receiving a ring.
  • a ring can be embedded in the potting compound and used to stabilize the balance weight.
  • the ring can be added before embedding in the potting compound of the mounting webs.
  • the ring can be considered as part of the body.
  • the receptacles are designed as recesses, the recesses may have a smaller diameter than the ring. This allows a clamping force to act on the ring after it has been pressed into the recess. As a result, a frictional connection can be achieved.
  • the plurality of fastening webs may each have a snap connector for receiving the ring.
  • a corresponding snap connector may be designed as an undercut snap connector.
  • the ring can be connected via the snap connector with the fastening webs.
  • An undercut recess a spring force of the material of the fastening web can be used to lock the ring.
  • An undercut may allow a positive connection between the ring and a fastening web.
  • At least one of the attachment webs may have at least one breakthrough penetrable by the potting compound. Through the breakthrough, the potting compound can connect on both sides of the fastening web. This allows a positive connection of the potting compound with the fastening web. The balance weight can thus be permanently connected to the fastening web and thereby with the cap.
  • the base body may have a structured surface for connection to the potting compound.
  • a textured surface may be a roughened surface.
  • the surface may be corrugated or embossed.
  • the structured surface provides an enlarged contact surface between the base body and the potting compound.
  • the potting compound in the structured surface can mechanically dig. Due to the structured surface larger forces between the balance weight and the body can be transferred.
  • the main body may have at least one dome-shaped protuberance which can be embedded in the potting compound.
  • the protuberance can be arranged between two fastening webs.
  • the protuberance may provide additional surface area for adhering the potting compound to the body.
  • the protuberance can have a high load capacity for lateral forces.
  • the protuberance can allow a positive connection between the body and the balance weight.
  • the base body may have at least one hook-shaped retaining element which is arranged between two fastening webs.
  • the holding element may be at least partially embedded in the potting compound.
  • the holding element can provide an undercut for mechanical locking of the potting compound. By the undercut forces can be supported, which act perpendicular to the surface of the body.
  • the main body can be designed as a plastic injection molded part.
  • the fastening webs can have the contour of a respective cavity in a parting line aligned perpendicular to a surface of the main body between two slides of an injection molding tool for the main body.
  • a slider may be in the shape of a circular sector.
  • the joints between the sliders are aligned radially to the base body.
  • the slides can be movable radially to the base body.
  • the parting line is widened when retracting the slide, so that a removal of the body is made possible.
  • the cap may comprise the annular balance weight of the potting compound, in which the plurality of attachment webs are embedded.
  • the potting compound can as Binder cement and / or plastic. Admixtures of the potting compound can be substances with a high specific gravity, for example minerals and / or ores.
  • a tub for a washing machine wherein the tub has a cylindrical side wall and a cap according to the approach presented here.
  • the cap is fluid-tightly connected to the side wall of the tub at an outer periphery.
  • the balance weight is arranged on an outer side of the tub.
  • the method may include a step of inserting in which the provided base body is inserted into the first mold half.
  • the inserting step may be eliminated since the body can be molded in a first side of the insert while the potting compound is injected in a second side of the insert.
  • the ring can be attached to the fixing bars between the two spraying operations.
  • Such a method can be used, for example, instead of a so-called fill-in principle in which liquid concrete is filled into a pre-fabricated cap cavity and cured there or used as a substitute for a so-called reversing plate principle advantageously implemented on a insert injection molding machine a cured concrete weight is placed in an injection molding tool and molded around.
  • Fig. 1 shows an illustration of a cap 100 for a washing machine tub according to an embodiment of the present invention.
  • the cap 100 has a, with the washing machine tubs fluid-tight connectable, flat annular main body 104. On a circle around a center of the main body 104 six fastening webs 106 are distributed in this embodiment.
  • a ring 107 is attached to the mounting webs 106.
  • the ring 107 is described in this and the following exemplary embodiments, a cap 100 according to the approach presented here can also be realized without a ring 107.
  • the fastening webs 106 each have a receptacle 108 on a side remote from the main body 104.
  • the ring 107 is fixed in the receptacles 108 of the fastening webs 106.
  • the fastening webs 106 act as spacers between the ring 107 and the main body 104.
  • the ring 107 is made of metal and circularly closed.
  • the cap 100 is ready for insertion into an injection mold, or is already arranged in an injection mold, in which then a potting compound is introduced to embed the ring 107 and the mounting webs 106 and form a firmly connected to the main body 104 balancing weight ,
  • the base body 104 is formed here substantially disc-shaped with a central hole 110. Around the hole 110, the base 104 has a bead 112.
  • the fastening webs 106 are aligned in a star shape on a center of the base body 104. In other words, the fastening webs 106 are perpendicular to the ring 107.
  • the base body 104 is designed as a plastic injection molded part.
  • the fastening webs 106 have the contour of a cavity in a parting line perpendicular to a surface of the base body 104 between two slides of an injection molding tool for the main body 104.
  • Fig. 2 shows a sectional view through a cap 100 with balance weight 200 according to an embodiment of the present invention.
  • the main body 104 is deformed here more out of a main extension plane of the cap 100, as the main body in Fig. 1 ,
  • the base 104 has a further bead 112 on the outer periphery.
  • the sectional plane of the sectional view extends radially to the cap 100 and perpendicular to the main extension plane through one of the fastening webs 106.
  • the base body 104 has a flat 202, which is aligned in the main plane of extension. On the flat 202, the balance weight 200 is arranged.
  • the balance weight 200 extends annularly closed circumferentially on the flat 202.
  • the flat 202 is disposed between the beads 112.
  • the attachment web 106 tapers from a foot in the region of the flat 202 to a head region with the receptacle 108.
  • the receptacle 108 is embodied here as a cutout 108 which is open on one side.
  • the recess 108 has undercuts which fix the ring 107 in the receptacle 108. With others Words an open side of the recess 108 is narrower than a diameter of the recess 108.
  • the fastening web 106 and the ring 107 are completely enclosed by a potting compound 204 of the balance weight 200.
  • the potting compound 204 is concrete in this embodiment.
  • the balance weight 200 has Aushebeschrägen, that is, the balance weight 200 is wider in the region of the flat 202, than on a side facing away from the flat 202 side. As a result, the potting compound 204 can be easily removed from its mold after curing.
  • the secure attachment of the balance weight 200 is secured to the base body 104 via a cast into the concrete 204 of the balance weight 200 special mounting ring 107 on the cap 100.
  • the cap 100 receives in the slider separation planes of the plastic tool webs 106, which allow the Einschnacken (snapping) of the continuous metal ring 107.
  • the metal ring 107 later has the function of transmitting the inertial forces of the concrete mass 200 to the cap 100.
  • Fig. 3 shows a sectional view through a cap 100 with a protuberance 300 according to an embodiment of the present invention.
  • the cap 100 substantially corresponds to the cap in FIG Fig. 2 ,
  • the cutting plane is located at another location of the cap 100.
  • the cutting plane runs centrally through the protuberance 300.
  • the protuberance 300 is arranged in the region of the flat 202.
  • the protuberance 300 is dome-shaped and has substantially the shape of a truncated cone.
  • the protuberance 300 is shorter than the attachment webs.
  • a gap is arranged, which is filled with potting compound 204.
  • the protuberance 300 is embedded in the potting compound 204 and designed to initiate shear forces in the direction of the flat 202 in the balance weight 200.
  • the protuberance 300 has an approximately constant wall thickness. That is, on a side facing away from the balance weight 200 side of the base body 104 has a recess.
  • the base body 104 on the side remote from the balance weight 200 side only a small depression, which is essentially due to the thermal shrinkage caused by the protuberance 300 material accumulation.
  • Fig. 4 shows a cutout view of a cap 100 with a protuberance 300 according to an embodiment of the present invention.
  • the cap 100 substantially corresponds to the cap in FIG Fig. 3 , In contrast, here are the balance weight and the ring is not shown.
  • a section of the basic body 104 with a truncated cone of the protuberance 300 arranged thereon is shown.
  • the main body 104 is as in Fig. 1 a circular ring.
  • the base body 104 in the plastic molded dome 300 In other words, the base body 104 in the plastic molded dome 300.
  • Fig. 5 shows a representation of a fastening web 106 with apertures 500 according to an embodiment of the present invention.
  • the fastening web 106 essentially corresponds to the fastening web in FIG Fig. 2 .
  • the fastening web 106 has four holes 500 between the receptacle 108 and the base body 104.
  • the web 106 for the metal ring is thus executed perforated to obtain an additional claw with the concrete.
  • the holes 500 are designed as through holes.
  • the holes 500 are arranged symmetrically to a central axis of the fastening web 106.
  • Receiving 108 is arranged in the central axis and also designed as a round bore.
  • the receptacle On the side remote from the base body 104, the receptacle has an opening 502.
  • the opening 502 has a smaller cross section than the bore of the receptacle 108.
  • the receptacle 108 has undercuts 504, which allow snapping and fixing of the ring.
  • the receptacle 108 may therefore be referred to as a snap connector.
  • material of the fastening web 106 deforms elastically on both sides of the opening 502 when the ring is pressed into the receptacle 108. When the largest cross-section of the ring has slid through the opening 502, the material springs back to its original position and locks the ring in the receptacle 108th
  • Fig. 6 11 shows an illustration of a base body 104 with a structured surface 600 and a detail of the structured surface 600 according to an exemplary embodiment of the present invention.
  • the base body 104 has a surface 600 which is enlarged by grooves and / or bulges instead of the protuberance.
  • the grooves and / or beads a positive interlocking with the potting compound of the balance weight, not shown here can be achieved.
  • On the textured plastic surface 600 of the concrete is pressed.
  • Fig. 7 shows a representation of a cap 100 for a washing machine tub with holding elements 700 according to an embodiment of the present invention.
  • the cap 100 substantially corresponds to the cap in FIG Fig. 1 ,
  • at least one of the fastening webs 106 is executed perforated, as for example in Fig. 5 is shown.
  • one of the retaining elements 700 is arranged in one intermediate space between each two of the fastening webs 106.
  • a number of retaining elements 700 corresponds to the number of fastening webs 106.
  • the cap 100 has eight fastening webs 106 and eight retaining elements 700.
  • the fastening webs 106 are radially to the annulus of the Base 104.
  • the holding elements 700 are hook-shaped or have an L-shaped cross-section, wherein a leg is connected to the base body 104.
  • the fixed leg is tangent to the circular ring of the base body 104.
  • the free leg of the L points away from the center of the base body 104 and is aligned substantially in the main extension direction of the base body 104. There is a gap between the ring 107 and the retaining elements 700.
  • Fig. 8 shows a detail of a holding member 700 according to an embodiment of the present invention.
  • the retaining element 700 essentially corresponds to the retaining elements in FIG Fig. 7 ,
  • the fixed leg 800 is slightly longer than the free leg 802. Between the free leg 802 and the base body 104, the potting compound, from which the balance weight is made, form-locking claw.
  • Fig. 9 shows a sectional view of a washing machine 900 with a tub 902, which is connected to a cap 100 according to an embodiment of the present invention.
  • the washing machine 900 may be referred to as a washing machine 900.
  • a laundry drum 904 is rotatably mounted in the tub 902 .
  • the tub 902 is mounted vibratory in the washing machine 900.
  • the tub 902 has a cylindrical base body having a rear wall and a front wall.
  • the cap 100 forms the front wall of the tub 902.
  • the cap 100 is fluid-tightly connected to the base body.
  • a shaft of the laundry drum 904 is rotatably mounted.
  • a seal for a door 906 of the washing machine 900 is arranged in the hole 110 of the cap 100.
  • the tub 902 or a liquor cycle of the washing machine 900 is closed in a fluid-tight manner.
  • the balance weight 200 on the cap 100 is disposed around the hole 110 on an outside of the tub 902 and influences a vibration behavior of the tub 902.
  • the added mass of the balance weight 200 reduces a resonant frequency of the oscillatory system from the laundry drum 904 and the tub 902 so that the washer 900 can quickly pass a critical speed range of the laundry drum 904 at the start of spin.
  • FIG. 12 shows a flowchart of a method 1000 of manufacturing a cap for a washing machine tub according to an embodiment of the present invention.
  • the method 1000 includes a step 1002 of providing, a step 1004 of joining, a step 1006 of loading, a step 1008 of closing, a step 1010 of filling, a step 1012 of pressing, a step 1014 of opening, and a step 1016 of FIG Ejecting.
  • a cap can be made as shown in FIG Fig. 2 is shown.
  • step 1002 of providing the main body and the ring of the cap are provided. If a ring is provided, in step 1004 of the connection, the ring is connected to the fastening webs of the base body using receptacles in the fastening webs. If the base body is not already in a mold half of an injection mold for the cap, the base body is inserted into a first mold half of the injection mold in step 1006 of insertion. In step 1008 of closing, the injection molding tool is closed to form a cavity having a negative contour of the balance weight between the first mold half and a second mold half of the injection mold. The fastening webs and the ring are arranged within the cavity. In step 1010 of the filling, the cavity is filled with the potting compound.
  • the potting compound flows around the fastening webs and the ring, if available.
  • step 1012 of the pressing the potting compound is pressed in the cavity using a punch of the injection molding tool to densify the potting compound.
  • step 1014 of the opening the injection mold is opened after the potting compound has solidified in the cavity and has embedded the ring and the mounting webs.
  • step 1016 the flap is ejected with the balance weight from the injection mold.
  • the approach presented here can also be adapted for a steel cap.
  • the fasteners can be attached to the cap via an additional joining method.
  • lacquered cast weight masses can be cheaply substituted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
EP15174813.4A 2014-07-30 2015-07-01 Kappe für einen laugenbehälter für einen waschautomaten, waschautomat und verfahren zum herstellen einer kappe für einen laugenbehälter Active EP2980298B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15174813T PL2980298T3 (pl) 2014-07-30 2015-07-01 Pokrywa na zbiornik na ług do pralki automatycznej, pralka automatyczna i sposób wytwarzania pokrywy na zbiornik na ług

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014110812.4A DE102014110812A1 (de) 2014-07-30 2014-07-30 Kappe für einen Laugenbehälter für einen Waschautomaten, Waschautomat und Verfahren zum Herstellen einer Kappe für einen Laugenbehälter

Publications (2)

Publication Number Publication Date
EP2980298A1 true EP2980298A1 (de) 2016-02-03
EP2980298B1 EP2980298B1 (de) 2018-08-01

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP15174813.4A Active EP2980298B1 (de) 2014-07-30 2015-07-01 Kappe für einen laugenbehälter für einen waschautomaten, waschautomat und verfahren zum herstellen einer kappe für einen laugenbehälter

Country Status (4)

Country Link
EP (1) EP2980298B1 (zh)
DE (1) DE102014110812A1 (zh)
ES (1) ES2686983T3 (zh)
PL (1) PL2980298T3 (zh)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19742983A1 (de) * 1997-09-29 1999-04-01 Bosch Siemens Hausgeraete Betonring als Ausgleichsgewicht am Laugenbehälter einer Waschmaschine
DE102006011734A1 (de) * 2006-03-14 2007-09-20 BSH Bosch und Siemens Hausgeräte GmbH Haushaltgerät mit einem Laugenbehälter
WO2014007764A1 (en) * 2012-07-03 2014-01-09 Armeton D.O.O. Washing machine tub and inertia counterweight assembly

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006052514B4 (de) * 2006-11-06 2010-08-05 Miele & Cie. Kg Laugenbehälter mit Ballastgewicht für eine Waschmaschine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19742983A1 (de) * 1997-09-29 1999-04-01 Bosch Siemens Hausgeraete Betonring als Ausgleichsgewicht am Laugenbehälter einer Waschmaschine
DE102006011734A1 (de) * 2006-03-14 2007-09-20 BSH Bosch und Siemens Hausgeräte GmbH Haushaltgerät mit einem Laugenbehälter
WO2014007764A1 (en) * 2012-07-03 2014-01-09 Armeton D.O.O. Washing machine tub and inertia counterweight assembly

Also Published As

Publication number Publication date
ES2686983T3 (es) 2018-10-23
EP2980298B1 (de) 2018-08-01
DE102014110812A1 (de) 2016-02-04
PL2980298T3 (pl) 2018-12-31

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