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WO2017167516A1 - Appareil ménager d'entretien du linge muni d'une poulie raccordée à un arbre de tambour par un rivet aveugle - Google Patents

Appareil ménager d'entretien du linge muni d'une poulie raccordée à un arbre de tambour par un rivet aveugle Download PDF

Info

Publication number
WO2017167516A1
WO2017167516A1 PCT/EP2017/054503 EP2017054503W WO2017167516A1 WO 2017167516 A1 WO2017167516 A1 WO 2017167516A1 EP 2017054503 W EP2017054503 W EP 2017054503W WO 2017167516 A1 WO2017167516 A1 WO 2017167516A1
Authority
WO
WIPO (PCT)
Prior art keywords
drum shaft
pulley
coupling element
blind rivet
laundry
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.)
Ceased
Application number
PCT/EP2017/054503
Other languages
German (de)
English (en)
Inventor
Simon GEUBIG
Michael Praller
Tom Weber
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Hausgeraete GmbH
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 BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Publication of WO2017167516A1 publication Critical patent/WO2017167516A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • D06F37/30—Driving arrangements 

Definitions

  • Household appliance for the care of laundry with a connected to a drum shaft with a blind rivet pulley
  • the invention relates to a household appliance for the care of laundry items, which has a laundry drum, which comprises a drum shaft.
  • the drum shaft is connected to a pulley of a belt drive, which is designed to drive the laundry drum.
  • Such a configuration is known from EP 2 557 219 A1.
  • a drum shaft connected directly to the pulley.
  • the drum shaft extends with a section into the pulley.
  • a toothing is formed on the outside, which engages in a complementary toothing on the inside of the receiving region of the pulley.
  • a pulley is known in which a central central coupling element is arranged for coupling with a shaft. This coupling element is connected in the manufacturing process of the pulley with outer rings which are formed circumferentially about the longitudinal axis of the pulley. The pulley produced in this way is then again placed directly on the shaft.
  • An inventive household appliance for the care of items of laundry comprises a laundry drum, which is designed for receiving laundry items.
  • the Laundry drum is in particular rotatably mounted in a housing of the household appliance.
  • the laundry drum comprises a drum shaft about which the laundry drum is rotatable.
  • the household appliance comprises a pulley, which is part of a belt drive.
  • the belt drive is in turn part of the household appliance and is designed to drive the laundry drum.
  • the pulley is connected to the drum shaft.
  • the pulley is not directly connected to the drum shaft, but is indirectly connected by an additional coupling element with the drum shaft.
  • the pulley for connection to the drum shaft rotatably connected to the coupling element and the coupling element in turn rotatably connected to the drum shaft, wherein a positive connection between the coupling element and the pulley is made by forming.
  • a cold forming is provided, wherein a cold forming is a plastic deformation of a component without additional supply of thermal energy.
  • a blank workpiece of the pulley and / or the coupling element is provided for producing the positive connection.
  • a blank workpiece is understood to mean a workpiece that is prepared for forming a region of the workpiece.
  • the raw workpieces of the pulley and the coupling element are guided or introduced into each other and then material of one of the two raw workpieces or both green workpieces, in particular by pressing, deformed such that a positive connection between the belt sheath and arises the coupling element. Such deformation will be called reshaping shortly afterwards.
  • Such a coupling element may preferably be in the form of a blind rivet.
  • the pulley for connection to the drum shaft is rotatably connected to the blind rivet and the blind rivet is then in turn rotatably connected to the drum shaft.
  • the blind rivet is thus an additional separate component, which thus represents an additional connecting component between the pulley and the drum shaft.
  • the blind rivet has an angular outer contour at the point of connection with the belt pulley in the direction of rotation about a longitudinal axis of the blind rivets.
  • this outer contour is a hexagon.
  • the torsional strength is thereby further improved.
  • the coupling element has a channel which extends axially and thus in the direction of the longitudinal axis of the coupling element.
  • the drum shaft extends into, wherein on an inner side of the channel, an internal thread is formed, with which the drum is screwed.
  • the drum shaft comprises a male thread on a section which extends into this channel. A fast, mechanically highly stable connection is achieved.
  • the coupling element has a channel into which the drum shaft extends, wherein on an inner side of the channel, a serration is formed, with which the drum shaft is toothed.
  • This alternative embodiment of a connection between that part of the drum shaft which extends into the channel and the coupling element itself also already allows a corresponding mechanical connection.
  • an axial position of the drum shaft is fixed to the pulley with an additional screw.
  • the non-rotatable connection is then improved again.
  • this screw is screwed axially into a free end of the drum shaft and rests with a screw head at a free end of the coupling element. It is thus exerted quasi an axial force through which then when screwing this additional screw, the coupling element is pressed against a stop on the drum shaft, so that the rotationally fixed position is supported again and in particular the axial position assurance is achieved.
  • the channel is also called Blindnietkanal.
  • the drum shaft is mounted with an employee storage.
  • a salaried storage is formed in particular of two mutually braced deep groove ball bearings or two mirror-image arranged angular contact ball bearings or ball bearings.
  • an elastic element for example a spring ring, is formed between the pulley and an inner ring of a ball bearing, whereby a preload of the ball bearings or the tension of the deep groove ball bearings is provided.
  • This ball bearing is in particular the outer of the two ball bearings and thus the ball bearing, which is closer to the connected to the pulley end of the drum shaft.
  • the connection with the coupling element between the pulley and the drum shaft is particularly advantageous, in particular in order to obtain a transmission of the torque to the drum shaft particularly efficient.
  • this relates to a household appliance for the care of laundry items, which has a laundry drum comprising a drum shaft.
  • the drum shaft is connected to a pulley of a belt drive for driving the laundry drum.
  • the coupling element is designed in the form of a press-in nut and thus the pulley for connection to the drum shaft rotatably connected to the press-in nut and the press-in nut is rotatably connected to the drum shaft.
  • a press-fit nut is also understood to mean coupling elements which have the same means provided by a press-in nut for producing a positive connection.
  • the press-in nut may have an internal channel with a thread or also an internal channel with a serrated profile.
  • the press-fit nut may also comprise a channel which also has the features of the two alternative embodiments of the blind rivet channel described above.
  • both aspects of the invention is preferably provided with respect to the assembly, that first the blind rivet or the press-in nut is connected to the pulley. This intermediate module of the pulley and the blind rivet or the press-in nut is then attached to the drum shaft in a further assembly step.
  • top, bottom, front, “rear”, “horizontal”, “vertical”, “depth direction”, “width direction”, “height direction”, etc. are the intended use and intended arrangement of the device and at a given then before the device standing and looking in the direction of the device given positions and orientations.
  • Fig. 1 is a schematic vertical sectional view of an embodiment of a household appliance according to the invention
  • FIG. 2 is an enlarged view of a portion of the household appliance of Figure 1 in the region of a drum shaft and a pulley connected thereto ..;
  • FIG. 3 is an illustration according to FIG. 2 in a further embodiment
  • FIG. 5 shows a sectional view corresponding to FIG. 2 and FIG. 3 according to a further exemplary embodiment of a connection possibility between the drum shaft and the belt pulley;
  • Fig. 6 is a representation according to FIG. 5 with a different yet further embodiment.
  • a household appliance 1 is shown in a simplified representation, which is designed for the care of laundry items and may be, for example, a washing machine or a washer-dryer.
  • the household appliance 1 comprises a housing 2, in which a laundry drum 3 is rotatably mounted.
  • the laundry drum 3 is rotatably mounted in the context about a horizontal axis A.
  • the laundry drum 3 comprises a drum shaft 4 which is coupled to a belt drive 5.
  • This belt drive 5 comprises in particular a motor 6, a drive belt 7 and a pulley 8 connected to the drum shaft 4. It is envisaged that the pulley 8 is not connected directly to the drum shaft 4, but is connected via an additional, separate coupling element 9 with the drum shaft 4.
  • the coupling element 9 is a blind rivet 10 in a particularly advantageous manner.
  • the blind rivet 10 includes a Blindnietkanal 1 1, in which the drum shaft 4 extends into and rotatably connected thereto.
  • a front portion 12 of the drum shaft 4 is inserted into the Blindnietkanal 1 1.
  • This front portion 12 has a length which substantially corresponds to the length of the blind rivet 10 in this final assembled state shown in FIG. 2.
  • a stop 14 is formed, on which the blind rivet 10 is applied.
  • the pulley 8 is first connected to the blind rivets 10 and then attached this intermediate module to the laundry drum 4.
  • the blind rivets 10 forms in the context of a groove-like receptacle 15 for the pulley 8, said groove-like receptacle 15 is formed in the circumferential direction around the axis B circumferentially closed.
  • the blind rivet 10 on an inner side 16, which limits the Blindnietkanal 1 1, an internal thread 17.
  • the front portion 12 is screwed with an external thread 18 formed there.
  • Fig. 3 is a representation corresponding to FIG. 2 is shown. In this embodiment, in contrast to Fig. 2, however, provided that no internal thread 16 and no external thread 18 is formed, but that the portion 12 is connected to the inner side 16 of the blind rivets 10 by a serration 19.
  • the position assurance between the pulley 8 and the drum shaft 4 is achieved in that an additional separate screw 20 is screwed in the direction of the axis B in the drum shaft 4.
  • an additional separate screw 20 is screwed in the direction of the axis B in the drum shaft 4.
  • the blind rivet 10 is also pressed against the stop 14 and improves the axial position assurance.
  • the screw 20 is screwed into a free end, which is formed by the front portion 12 of the drum shaft 4, and also in the axial direction of the drum shaft 4th
  • a hole 23 is shown in a simplified representation, in which the blind rivet 10 is inserted and is then connected to the pulley 8.
  • a boundary contour 24 of the hole 23 is angular, in particular hexagonal, formed.
  • an outer contour 25 (FIG. 2) of the blind rivets 10 is then also in the region in which the blind rivets 10 are then in radial contact with the belt pulley 8 during attachment to the pulley 8 due to the deformation or compression of the blind rivets 10 is also designed as a complementary hexagon.
  • a press-in nut 26 is formed. Again, it is provided that first the press-in nut 26 is rotatably connected to the pulley 8 and then attached to the drum shaft 4 in the wake of this intermediate module.
  • a screw connection between the drum shaft 4 and an internal thread is formed on an inner side of the press-in nut 26, as is provided correspondingly in the embodiment in Fig. 2.
  • Fig. 6 which shows a corresponding sectional view as in Fig.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)

Abstract

L'invention concerne un appareil ménager (1) d'entretien du linge, lequel présente un tambour de lavage (3) qui comprend un arbre de tambour (4) qui est raccordé à une poulie (8) d'un entraînement à courroie (5) et sert à l'entrainement du tambour de lavage (3). La poulie (8) est raccordée bloquée en rotation à un élément d'accouplement (9) pour son raccordement à l'arbre de tambour (4) et l'élément d'accouplement (9) est raccordé bloqué en rotation à l'arbre de tambour (4), et un raccordement par complémentarité de forme entre l'élément d'accouplement (9) et la poulie (8) est produit par déformation.
PCT/EP2017/054503 2016-03-30 2017-02-27 Appareil ménager d'entretien du linge muni d'une poulie raccordée à un arbre de tambour par un rivet aveugle Ceased WO2017167516A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016205167.9 2016-03-30
DE102016205167.9A DE102016205167A1 (de) 2016-03-30 2016-03-30 Haushaltsgerät zur Pflege von Wäschestücken mit einer mit einer Blindniete an eine Trommelwelle angebunden Riemenscheibe

Publications (1)

Publication Number Publication Date
WO2017167516A1 true WO2017167516A1 (fr) 2017-10-05

Family

ID=58162622

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/054503 Ceased WO2017167516A1 (fr) 2016-03-30 2017-02-27 Appareil ménager d'entretien du linge muni d'une poulie raccordée à un arbre de tambour par un rivet aveugle

Country Status (2)

Country Link
DE (1) DE102016205167A1 (fr)
WO (1) WO2017167516A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3663453A1 (fr) * 2018-12-07 2020-06-10 BSH Hausgeräte GmbH Appareil électroménager destiné à l'entretien du linge pourvu d'une poulie à courroie à laquelle est fixé un élément ressort

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1219156A (en) * 1967-07-12 1971-01-13 Thomson Houston Comp Francaise A hub and shaft assembly
US5195241A (en) 1991-12-04 1993-03-23 General Motors Corporation Method of manufacturing a pulley with integral fastener and spacer
EP2557219A1 (fr) 2011-08-09 2013-02-13 Electrolux Home Products Corporation N.V. Machine de traitement du linge
WO2014087309A1 (fr) * 2012-12-05 2014-06-12 BSH Bosch und Siemens Hausgeräte GmbH Dispositif de fixation, système de fixation, lave-linge ayant un système de fixation, et procédé de fabrication de dispositif de fixation
DE102014214949A1 (de) * 2014-07-30 2016-02-04 BSH Hausgeräte GmbH Haushalt-Wäschebehandlungsmaschine mit einer durch einen Elektromotor antreibbaren Wäschetrommel und Verfahren zum Montieren

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1219156A (en) * 1967-07-12 1971-01-13 Thomson Houston Comp Francaise A hub and shaft assembly
US5195241A (en) 1991-12-04 1993-03-23 General Motors Corporation Method of manufacturing a pulley with integral fastener and spacer
EP2557219A1 (fr) 2011-08-09 2013-02-13 Electrolux Home Products Corporation N.V. Machine de traitement du linge
WO2014087309A1 (fr) * 2012-12-05 2014-06-12 BSH Bosch und Siemens Hausgeräte GmbH Dispositif de fixation, système de fixation, lave-linge ayant un système de fixation, et procédé de fabrication de dispositif de fixation
DE102014214949A1 (de) * 2014-07-30 2016-02-04 BSH Hausgeräte GmbH Haushalt-Wäschebehandlungsmaschine mit einer durch einen Elektromotor antreibbaren Wäschetrommel und Verfahren zum Montieren

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3663453A1 (fr) * 2018-12-07 2020-06-10 BSH Hausgeräte GmbH Appareil électroménager destiné à l'entretien du linge pourvu d'une poulie à courroie à laquelle est fixé un élément ressort

Also Published As

Publication number Publication date
DE102016205167A1 (de) 2017-10-05

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