EP2379795B1 - Hilfsrolle für trocknertrommel - Google Patents

Hilfsrolle für trocknertrommel Download PDF

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Publication number
EP2379795B1
EP2379795B1 EP09775159A EP09775159A EP2379795B1 EP 2379795 B1 EP2379795 B1 EP 2379795B1 EP 09775159 A EP09775159 A EP 09775159A EP 09775159 A EP09775159 A EP 09775159A EP 2379795 B1 EP2379795 B1 EP 2379795B1
Authority
EP
European Patent Office
Prior art keywords
casing
roller
screw
drum
bearing
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.)
Active
Application number
EP09775159A
Other languages
English (en)
French (fr)
Other versions
EP2379795A1 (de
Inventor
Can Arslan
Canyigit Atay
Alper Batur
Umit Gulbay
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.)
Arcelik AS
Original Assignee
Arcelik AS
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Filing date
Publication date
Application filed by Arcelik AS filed Critical Arcelik AS
Publication of EP2379795A1 publication Critical patent/EP2379795A1/de
Application granted granted Critical
Publication of EP2379795B1 publication Critical patent/EP2379795B1/de
Active legal-status Critical Current
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
    • D06F58/00—Domestic laundry dryers
    • D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis
    • D06F58/04—Details 
    • D06F58/06—Mountings for the rotating drums

Definitions

  • the present invention relates to a dryer that comprises a drum, the front bearing of which is performed by means of rollers (see, for example DE-C-19615822 ).
  • the drum wherein the laundry to be dried is loaded is rotated by a motor and thus, the drying process is performed.
  • the drum is borne inside the dryer body at its front side wherein the laundry intake opening is located by means of sliding or roller mechanisms.
  • the circular portion of the drum extending to its front side is used for bearing.
  • Roller mechanisms are preferred for supporting the drum since they are less dependent on the surface smoothness of the drum, and two rollers, at the centers of which bearings are situated, are disposed generally under the drum.
  • the roller shaft (M) which is inserted to the center of the roller (T) and which provides the roller (T) to be connected to a point in a rotatable manner is mounted to the hub of the bearing (R) that is at the center of the roller (T) by press-fit ( Figure 1 ).
  • the roller shaft (M) has to be processed with fine tolerances, and if the press-fit diameter of the shaft (M) exceeds the tolerances, the life-span of the bearing (R) is shortened while the dryer is still in the manufacturing phase, and in case of malfunction, component replacements and maintenance costs increase.
  • the drum wherein the laundry is disposed is guided in the vicinity of the intake side by means of rollers.
  • the rollers are rotatably mounted by means of bearing axes in a casing portion surrounding the intake opening.
  • the aim of the present invention is the realization of a dryer wherein its rollers that provide the front bearing of the drum are easily assembled and damages against them are prevented.
  • the drum of the dryer of the present invention rotates on top of the rollers assembled to a casing which surrounds the laundry intake opening and which is produced from plastic material.
  • the rollers are mounted to the casing by being inserted to the sleeves which are produced as a single piece with the casing that provides the drum to be borne from the front side, which have a hollow cylindrical shape, which provide the roller to be assembled to the casing and which, at their center, have a screw hole that extends towards the inside of the casing.
  • the sleeve surrounds the screw hole portion opening to the outside of the casing and extends towards the outside of the casing, and has a wall thickness providing the strength that can compensate the forces acting on the roller.
  • the sleeve passes through the bearing bore that is at the center of the roller by extending into the roller from the casing, in the direction of the rotational axis of the roller and contacts the cylindrical wall of the bearing bore.
  • the roller After being mounted to the sleeve, the roller is fixed in the axial direction by means of a screw which is mounted to the casing by being inserted through the screw hole.
  • the dryer roller is borne by the bearing which is integrated to the hub of the roller and which has an outer race located at its outer side, and an inner race located at its inner side.
  • the bearing bore is located at the center of the inner race of the bearing and while the roller is assembled to the casing, the sleeve is seated in the bearing bore that is at the center of the inner race of the bearing.
  • the diameter of the head of the screw that provides the roller to be fixed to the casing has a dimension such that the screw head will lean all around against the edge of the inner race of the bearing that is at the center of the roller, and after the screw is mounted, elements such as nut and washer are not additionally needed.
  • the diameter of the screw body is variable and the diameter of at least one part of the screw body, which is at the screw head-side of the screw body and which remains inside the sleeve at the end of the assembly of the roller to the casing, is greater than the diameter of the screw hole.
  • Figure 1 - is the schematic view of a dryer roller, a roller bearing and a roller shaft
  • Figure 2 - is the schematic view of the dryer of the present invention.
  • Figure 3 - are the cross-sectional views of the casing, the roller and the assembly screw located in the dryer of the present invention
  • Figure 4 - is the cross-sectional view of the roller mounted to the casing by the assembly screw.
  • Figure 5 - is the cross-sectional view of detail A in Figure 4 .
  • the dryer (1) comprises a drum (2) wherein the laundry to be dried is disposed and which is rotated around the horizontal axis (X1), an intake opening (3) which is located at the front side of the drum (2) and which provides the laundry to be loaded, a casing (4) which surrounds the intake opening (3), which is produced from plastic material and which provides the drum (2) to be borne from the front side, a ring-shaped front wall (5) which forms the front surface of the drum (2) body, and a circular front support rim (6) which extends from the inner edge of the front wall (5) towards the intake opening (3).
  • the dryer (1) furthermore, comprises one or more rollers (8) which are mounted to the casing (4) inner side facing the drum (2), which support the drum (2) by being seated in the front support rim (6), which have a bearing bore (7) located at the center of the roller (8) and providing it to be borne in a rotatable manner, and which rotate around a rotational axis (X2) parallel to the horizontal axis (X1) of the drum (2) by the effect of the rotational movement of the drum (2).
  • rollers (8) which are mounted to the casing (4) inner side facing the drum (2), which support the drum (2) by being seated in the front support rim (6), which have a bearing bore (7) located at the center of the roller (8) and providing it to be borne in a rotatable manner, and which rotate around a rotational axis (X2) parallel to the horizontal axis (X1) of the drum (2) by the effect of the rotational movement of the drum (2).
  • the dryer (1) of the present invention comprises one or more sleeves (10)
  • the sleeve (10) passes through the bearing bore (7) by extending into the roller (8) from the casing (4) in the direction of the roller (8) axis (X2), and contacts the cylindrical wall of the bearing bore (7).
  • the sleeve (10) has a wall thickness providing the strength that can compensate the forces acting on the roller (8).
  • the dryer (1) furthermore, comprises a screw (11) which, after the roller (8) is mounted to the sleeve (10), is inserted through the screw hole (9) and assembled to the casing (4) by being screwed, and which fastens the roller (8) in the axial direction and thus, prevents it from being detached from the sleeve (10).
  • the dryer (1) comprises a bearing (12) which is integrated to the hub of the roller (8) and which has an outer race (R1) located at its outer side, and an inner race (R2) located at its inner side.
  • the bearing bore (7) is located at the center of the inner race (R2) of the bearing (12) and while the roller (8) is assembled to the casing (4), the sleeve (10) is seated in the bearing bore (7) that is at the center of the inner race (R2) of the bearing (12).
  • the drum (2) is supported by two rollers (8) which are located at its underside.
  • the rollers (8) are mounted to the casing (4) by being inserted to two sleeves (10).
  • rollers (8) are screwed to the casing (4) by means of the screws (11) mounted to the screw hole (9) in the sleeves (10) and the assembly of the rollers (8) is completed.
  • the screw (11) has a screw head (13) which has a diameter dimension such that the screw head (13) will lean all around against the edge of the bearing (12) inner race (R2), and when the screw (11) is screwed to the casing (4) by being inserted through the screw hole (9) in the sleeve (10), the bearing (12) and hence the roller (8) whereto the bearing (12) is integrated are provided to be fixed in the axial direction and thus, the roller (8) is provided not to be detached from the sleeve (10), and elements such as nut and washer are not additionally needed.
  • the screw (11) has a screw body (14), the diameter of which is variable, and in the assembly process, it provides the outer diameter (D1) of the sleeve (10) to be increased.
  • the diameter (D2) of at least one part of the screw body (14), which is at the screw head (13)-side of the screw body (14) and which remains inside the sleeve (10) at the end of the assembly of the roller (8) to the casing (4), is greater than the diameter (D3) of the screw hole (9).
  • the screw body (14) expands the screw hole (9) and thus, increases the outer diameter (D1) of the sleeve (10), in other words, forces the sleeve (10) to expand inside the inner race (R2) of the bearing (12).
  • the sleeve (10) applies pressure to the inner race (R2) of the bearing (12) from the center outwards in the radial direction and thus, during the operation of the roller (8), the inner race (R2) of the bearing (12) is provided not to rotate by being fixed around the sleeve (10).
  • the sleeve (10) is produced from plastic material, the flexibility of which is more than metal material, together with the casing (4), when the screw (11) is mounted, the sleeve (10) is expanded from the inside by the screw (11) and thus, applies pressure to the inner race (R2) of the bearing (12).
  • the sleeve (10) is inserted to the inner race (R2) of the bearing (12) without straining the bearing (12) and then, by being expanded by the screw (11), a connection similar to press-fit in the prior art is provided.
  • the bearings are strained in the axial direction and therefore, their operating life-span is shortened.
  • the initial diameter (D) of the sleeve (10) is equal to or smaller than the inner diameter of the bearing (12) inner race (R2), that is, the inner diameter of the bearing bore (7), the sleeve (10) is inserted to the bearing (12) inner race (R2) without straining the bearing (12) in the axial direction, and after the sleeve (10) is inserted to the bearing (12), the diameter (D) of the sleeve (10) is increased by being expanded by the screw (11), and thus, a connection which performs the function of press-fit and which does not have the disadvantages of press-fit is provided and the operating life of the bearing (12) is increased.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Mounting Of Bearings Or Others (AREA)

Claims (4)

  1. Trockner (1), umfassend eine Trommel (2), in der zu trocknende Wäsche angeordnet ist und der um die horizontale Achse (X1) gedreht wird, eine Einlassöffnung (3), die auf der Vorderseite der Trommel (2) angeordnet ist und durch die Wäsche geladen wird, ein Gehäuse (4), das die Einlassöffnung (3) umgibt und aus Kunststoffmaterial hergestellt ist und die Trommel (2) von der Vorderseite stützt, eine ringförmige Vorderwand (5), die die Vorderfläche des Grundkörpers der Trommel (2) bildet, einen kreisförmigen vorderen Stützrand (6), der sich von der Innenkante der Vorderwand (5) zur Einlassöffnung (3) hin erstreckt, und eine oder mehrere Rollen (8), die auf der Innenseite des Gehäuses (4) angebracht sind und der Trommel (2) zugewandt sind und die Trommel (2) abstützen, indem sie im vorderen Stützrand (6) sitzen und eine Lagerbohrung (7) aufweisen, die in der Mitte der Rolle (8) angeordnet ist und diese drehbar lagert, und die sich aufgrund der Drehbewegung der Trommel (2) um eine Drehachse (X2) parallel zur horizontalen Achse (X1) der Trommel (2) drehen, gekennzeichnet durch eine oder mehrere Hülsen (10),
    - die einstückig mit dem Gehäuse (4) geformt sind,
    - die in ihrer Mitte eine Schrauböffnung (9) aufweisen, die sich konzentrisch mit der Lagerbohrung (7) zum Inneren des Gehäuses (4) erstreckt,
    - die sich in Richtung der Drehachse (X2) der Rolle (8) den Abschnitt der Schrauböffnung (9) umgeben, der sich vom Gehäuse (4) nach außen öffnet, und sich auf diese Weise vom Gehäuse (4) nach außen erstrecken,
    - andenen die Rolle (8) angebracht ist,
    - die eine hohle zylindrische Form aufweisen und einen Außendurchmesserabmessung (D1) aufweisen, die es ihnen erlaubt, vor der Montage in lockerer Passung durch die Lagerbohrung (7) geführt zu werden,
    und
    - durch eine Schraube (11), die am Gehäuse (4) montiert wird, indem sie durch die Schrauböffnung (9) geführt wird, nachdem die Rolle (8) an der Hülse (10) montiert wurde.
  2. Trockner (1) nach Anspruch 1, dadurch gekennzeichnet, dass das Lager (12) in die Nabe der Rolle (8) integriert ist und eine Innennabe (R2) aufweist, die auf seiner Innenseite angeordnet ist, und dass die Hülse (10) in der Lagerbohrung (7) sitzt, die in der Mitte der Innennabe (R2) des Lagers (12) angeordnet ist.
  3. Trockner (1) nach Anspruch 2, dadurch gekennzeichnet, dass die Schraube (11) einen Schraubkopf (13) aufweist, dessen Durchmesserabmessung derart ist, dass der Schraubkopf (13) rundum an der Kante der Innennabe (R2) des Lagers (12) anliegt.
  4. Trockner (1) nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Schraube (11) beim Montagevorgang dafür sorgt, dass der Außendurchmesser (D1) der Hülse (10) erhöht wird, und wobei der Durchmesser (D2) von wenigstens einem Teil des Schraubkörpers (14), der sich auf der Seite des Schraubkopfes (13) des Schraubkörpers (14) befindet und am Ende der Montage der Rolle (8) am Gehäuse (4) im Inneren der Hülse (10) verbleibt, größer als der Durchmesser (D3) der Schrauböffnung (9) ist.
EP09775159A 2008-12-30 2009-12-09 Hilfsrolle für trocknertrommel Active EP2379795B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR200810034 2008-12-30
PCT/EP2009/066687 WO2010076135A1 (en) 2008-12-30 2009-12-09 Dryer drum support roller

Publications (2)

Publication Number Publication Date
EP2379795A1 EP2379795A1 (de) 2011-10-26
EP2379795B1 true EP2379795B1 (de) 2012-11-28

Family

ID=41723106

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09775159A Active EP2379795B1 (de) 2008-12-30 2009-12-09 Hilfsrolle für trocknertrommel

Country Status (3)

Country Link
EP (1) EP2379795B1 (de)
ES (1) ES2398028T3 (de)
WO (1) WO2010076135A1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2604671A1 (en) * 2007-09-28 2009-03-28 Mabe Canada Inc. Clothes dryer bearing gasket support
EP2843115B1 (de) * 2013-08-27 2018-05-16 Electrolux Appliances Aktiebolag Wäschetrockner mit drehtrommel
EP2843116A1 (de) * 2013-08-27 2015-03-04 Electrolux Appliances Aktiebolag Wäschetrockner mit Drehtrommel
EP2990519B1 (de) * 2014-08-29 2019-10-30 Electrolux Appliances Aktiebolag Wäschetrockner
CN108411554B (zh) * 2018-02-26 2020-07-28 郝影 卧式洗衣机
DE102019214421A1 (de) * 2019-09-23 2021-03-25 BSH Hausgeräte GmbH Rollkörper für eine Lagerrolle, Lagerrolle mit einem solchen und Wäschebehandlungsgerät mit einer solchen

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19615822C1 (de) * 1996-04-20 1997-05-07 Bauknecht Hausgeraete Wäschetrockner
DE10358131B3 (de) * 2003-12-12 2005-01-05 Miele & Cie. Kg Wäschetrockner mit einer Rollenlagerung

Also Published As

Publication number Publication date
WO2010076135A1 (en) 2010-07-08
EP2379795A1 (de) 2011-10-26
ES2398028T3 (es) 2013-03-13

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