EP1206652A1 - Amortisseur a friction - Google Patents

Amortisseur a friction

Info

Publication number
EP1206652A1
EP1206652A1 EP00964013A EP00964013A EP1206652A1 EP 1206652 A1 EP1206652 A1 EP 1206652A1 EP 00964013 A EP00964013 A EP 00964013A EP 00964013 A EP00964013 A EP 00964013A EP 1206652 A1 EP1206652 A1 EP 1206652A1
Authority
EP
European Patent Office
Prior art keywords
friction
longitudinal axis
central longitudinal
damping unit
friction damper
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.)
Withdrawn
Application number
EP00964013A
Other languages
German (de)
English (en)
Inventor
Dieter Mayer
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.)
Suspa Holding GmbH
Original Assignee
Suspa Holding 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 Suspa Holding GmbH filed Critical Suspa Holding GmbH
Publication of EP1206652A1 publication Critical patent/EP1206652A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F7/00—Vibration-dampers; Shock-absorbers
    • F16F7/08—Vibration-dampers; Shock-absorbers with friction surfaces rectilinearly movable along each other
    • F16F7/09—Vibration-dampers; Shock-absorbers with friction surfaces rectilinearly movable along each other in dampers of the cylinder-and-piston type
    • 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
    • D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F7/00—Vibration-dampers; Shock-absorbers
    • F16F7/02—Vibration-dampers; Shock-absorbers with relatively-rotatable friction surfaces that are pressed together
    • F16F7/04—Vibration-dampers; Shock-absorbers with relatively-rotatable friction surfaces that are pressed together in the direction of the axis of rotation

Definitions

  • the invention relates to a friction damper, especially for washing machines with a spin cycle.
  • the invention has for its object to provide a friction damper, in particular for washing machines with a spin cycle, which enables damping of wobble movements of a washing unit parallel and perpendicular to the drum axis.
  • the object is achieved by the features of claim 1.
  • the essence of the invention is to provide an axial Friction damping unit and at the same time to provide a rotary friction damping unit.
  • FIG. 1 is a side view of a trorrimel washing machine in a schematic representation
  • FIG. 2 shows a drum washing machine according to FIG. 1 in front view
  • FIG. 5 shows a cross-sectional view according to the section line V-V in FIG. 4,
  • Fig. 6 shows a friction damper in longitudinal section according to a second embodiment
  • a drum washing machine with a horizontal drum axis 1 has an oscillating washing unit 2 with a drive motor 3, which drives the washing drum (not shown in detail) via a belt drive 4. Further components connected to the washing unit 2, for example a gear, are not shown for the sake of simplicity.
  • the oscillating washing unit 2 is suspended from a washing machine housing 6 supported on a machine frame 5 formed by a base frame by means of helical tension springs 7.
  • the tension springs 7 are on the one hand attached to eyelets 8 which are attached in the upper area of the washing unit 2. On the other hand, they are suspended from eyelets 9, which are formed on side walls 10 of the housing 6.
  • Friction dampers which are friction dampers 11, are also arranged between the washing unit 2 and the machine frame 5.
  • the friction damper 11 has a housing 12.
  • the housing 12 consists essentially of a cylindrical tube 13 which is closed at one end by means of a base 14.
  • an articulated sleeve 15 is attached as a coupling element, by means of which the friction damper 11 on a bearing 16 Washing unit 2 is mounted so that the friction damper 11 is pivotally mounted about a pivot axis 17 relative to the washing unit 2, which runs parallel to the drum axis 1.
  • the respective friction damper 11 also has a plunger 18, which also has an articulated sleeve 19 at its outer end, the pivot axis 20 of which, like the pivot axis 17, perpendicularly intersects the central longitudinal axis 21 of the respective friction damper 11.
  • the friction damper 11 is pivotally mounted in a bearing 22 attached to the machine frame 5 in such a way that the pivot axis 20 also runs parallel to the drum axis 1.
  • the plunger 18 has a non-round, namely a rectangular cross-sectional profile. It is also possible to provide an elliptical cross-sectional profile.
  • the plunger 18 can be inserted into the housing 12 along the central longitudinal axis 21 in the direction of an insertion direction 23.
  • annular cylindrical receiving section 24 which runs concentrically to the central longitudinal axis 21, is formed in one piece with the housing 12 and projects radially outward relative to the housing 12 to the axis 21.
  • the receiving section 24 has at its end in the direction of insertion 23 a stop collar 25 running perpendicular to the axis 21.
  • the receiving section 24 has on its outer circumference radially outwardly projecting locking lugs 26.
  • one on the inside side of the tube 13 formed, perpendicular to the central longitudinal axis 21 extending annular support edge 27 is provided.
  • a guide bushing 28 which is arranged concentrically to the central longitudinal axis 21 and which has a friction section 29 and a support section 30 in the insertion direction 23.
  • the friction section 29 is circular cylindrical with an outer circumferential surface 31.
  • the support section 30 has an annular groove 32.
  • annular stop edge 33 is formed which bears against the stop collar 25.
  • annular stop edge 34 is formed, which abuts against the support edge 27.
  • annular cylindrical rotary friction lining 36 is provided, which is arranged on the receiving section 24. It is also possible to arrange the rotary friction lining 36 on the outer peripheral surface 31 instead of on the inner peripheral surface 35.
  • the rotary friction lining 36 is supported in the insertion direction 23 against the stop collar 25.
  • the guide bushing 28 has a guide channel 37, which runs concentrically to the central longitudinal axis 21, with openings 38, 39 on the end side and having a rectangular cross section, in which the plunger 18 is guided so as to be displaceable.
  • friction lining chambers 40 and 41 are provided on two opposite sides which run parallel to one another and opposite the openings 38 and 39.
  • an axial friction lining 42 is provided, which is axially and radially outward direction is supported.
  • the axial friction lining 42 abuts the tappet 18 in a frictional manner. It is possible to choose the axial friction lining 42 and the rotating friction lining 36 differently with regard to the material and the effective friction length. In this way, the frictional force and thus the damping effect can be set differently in the axial direction and in the direction of rotation, so that the rotational damping characteristic and the axial damping characteristic can be set as desired relative to one another.
  • the unit comprising the guide bushing 28 and the axial friction linings 42 forms an axial friction damping unit.
  • the receiving section 24 and the rotary friction lining 36 form a rotary friction damping unit.
  • a cover 43 is provided, which has a ring-cylindrical wall 44, which is in contact with the receiving section 24 from the outside, and a wall running perpendicular to the central longitudinal axis 21, in one piece with the Wall 44 formed floor 45.
  • a concentric opening 46 is provided for the passage of the plunger 18.
  • the wall 44 has latching openings 47 along its circumference, into which the latching lugs 26 engage when the cover 43 is pushed in in the direction of insertion 23 and lock it against the direction of insertion 23.
  • the bottom 45 bears against the free end of the receiving section 24.
  • the rotary friction lining 36 and the guide bushing 28 are supported against the insert 45 against the base 45.
  • FIGS. 6 and 7. A second embodiment of the invention will be described with reference to FIGS. 6 and 7. Identical parts are given the same reference numerals as in the first embodiment, to the description of which reference is hereby made. Structurally different, but functionally similar parts are given the same reference numerals with a prime.
  • the main difference from the first execution Formation is that the friction section 29 'of the guide bushing 28' is not circular cylindrical, as in the first embodiment, but spherical.
  • the spherical layer-shaped friction section 29 ' corresponds in terms of the outer shape to a body which arises when a disk is cut off on opposite sides at the same distance from the center point in the case of a ball.
  • the rotary friction lining 36 ' is shaped in accordance with the constant curvature of the outer peripheral surface 31' which is predetermined by the spherical layer shape, so that it likewise has a constant curvature.
  • An annular support body 48 is arranged between the rotary friction lining 36 'and the receiving section 24'. This is of circular cylindrical design along its outer circumference and is positively fitted in the receiving section 24 'in the direction of the axis 21 and non-positively around the axis 21 in the receiving section 24'.
  • the inside of the support body 48 is concave and has essentially the same curvature as the spherical-layer-shaped friction section 29 '.
  • Damping of the plunger 18 is possible.
  • articulation point displacements of the friction damper 11 'in the direction of the pivot axes 17 or 20 can be better absorbed when the washing unit tumbles.
  • the choice of the rotary friction lining 36 ' ensures that only slight deflections of the tappet 18 with respect to the axis 21 can occur.
  • Rotation ellipsoid layers are particularly suitable for this purpose, since the Liche curvature a pivoting of the plunger 18 relative to the axis 21 becomes more difficult with increasing deflection and in this way an automatic centering of the plunger 18 occurs after the action of a deflecting force.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)

Abstract

Amortisseur à friction (11), en particulier pour machines à laver à essorage, comprenant un boîtier tubulaire (12) à axe médian longitudinal (21), une tige (18) émergeant d'une première extrémité du boîtier (12), présentant une section non circulaire, déplaçable axialement, parallèlement à l'axe longitudinal médian (21), susceptible de tourner autour de cet axe (21), des éléments d'articulation (15, 19) montés, respectivement, à une deuxième extrémité du boîtier (12) et à une extrémité libre de la tige (18), une unité d'amortissement à friction axiale, dans laquelle la tige (18) est guidée, déplaçable axialement, avec amortissement, et une unité d'amortissement à friction en rotation reliée au boîtier (12), dans laquelle l'unité d'amortissement à friction axiale est susceptible de tourner, avec amortissement.
EP00964013A 1999-08-25 2000-08-11 Amortisseur a friction Withdrawn EP1206652A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE1999140191 DE19940191A1 (de) 1999-08-25 1999-08-25 Reibungsdämpfer
DE19940191 1999-08-25
PCT/EP2000/007861 WO2001014763A1 (fr) 1999-08-25 2000-08-11 Amortisseur a friction

Publications (1)

Publication Number Publication Date
EP1206652A1 true EP1206652A1 (fr) 2002-05-22

Family

ID=7919475

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00964013A Withdrawn EP1206652A1 (fr) 1999-08-25 2000-08-11 Amortisseur a friction

Country Status (3)

Country Link
EP (1) EP1206652A1 (fr)
DE (1) DE19940191A1 (fr)
WO (1) WO2001014763A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100484658B1 (ko) * 2003-05-20 2005-04-20 엘지전자 주식회사 드럼 세탁기의 댐퍼 구조
WO2010103349A1 (fr) * 2009-03-13 2010-09-16 Adil Kanioz Amortisseur de chocs à friction
CN102778557B (zh) * 2011-04-28 2016-01-06 美艾利尔（上海）诊断产品有限公司 生物检测试剂涂膜液
KR102533662B1 (ko) * 2016-04-12 2023-05-17 삼성전자주식회사 진동 댐퍼 및 이를 포함하는 세탁기
DE102016210162A1 (de) * 2016-06-08 2017-12-14 Suspa Gmbh Führungs-/Dämpfungseinheit und Kolbengehäuseeinheit
EP3809010A1 (fr) * 2019-10-16 2021-04-21 SUSPA GmbH Amortisseur à friction

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1460969A1 (de) * 1954-07-01 1969-04-24 Hotchkiss Brandt Trockener Reibungsdaempfer fuer Waeschewaschmaschinen mit Waschtrommel
GB1039300A (en) * 1962-09-13 1966-08-17 Metalastik Ltd Improvements in or relating to dampers
GB1390499A (en) * 1971-04-16 1975-04-16 Hoover Ltd Washing machines
FR2376242A1 (fr) * 1976-12-31 1978-07-28 Thomson Brandt Machine a laver le linge munie d'amortisseurs
DE2820651C2 (de) * 1978-05-11 1985-11-14 G. Bauknecht Gmbh, 7000 Stuttgart Stoßdämpfer für Waschmaschinen oder Waschtrockner

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0114763A1 *

Also Published As

Publication number Publication date
DE19940191A1 (de) 2001-03-15
WO2001014763A1 (fr) 2001-03-01

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