WO2003036130A1 - Dispositif tendeur - Google Patents

Dispositif tendeur Download PDF

Info

Publication number
WO2003036130A1
WO2003036130A1 PCT/EP2002/011281 EP0211281W WO03036130A1 WO 2003036130 A1 WO2003036130 A1 WO 2003036130A1 EP 0211281 W EP0211281 W EP 0211281W WO 03036130 A1 WO03036130 A1 WO 03036130A1
Authority
WO
WIPO (PCT)
Prior art keywords
base part
swivel arm
tensioning
spring
tensioning device
Prior art date
Application number
PCT/EP2002/011281
Other languages
German (de)
English (en)
Inventor
Andreas Lang
Matthias Schmidl
Original Assignee
Ina-Schaeffler 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 Ina-Schaeffler Kg filed Critical Ina-Schaeffler Kg
Priority to BR0206167-8A priority Critical patent/BR0206167A/pt
Publication of WO2003036130A1 publication Critical patent/WO2003036130A1/fr

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
    • F16H—GEARING
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes, or chains
    • F16H7/10—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley
    • F16H7/12—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley
    • F16H7/1209—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley with vibration damping means
    • F16H7/1218—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley with vibration damping means of the dry friction type
    • 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
    • F16H—GEARING
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes, or chains
    • F16H2007/0802—Actuators for final output members
    • F16H2007/081—Torsion springs

Definitions

  • the present invention relates to a tensioning device for a traction mechanism, in particular a belt of a traction mechanism drive.
  • the construction of the tensioning device comprises a stationary base part, for example fastened to the crankcase of the internal combustion engine, which forms an axis of rotation for a swivel arm.
  • the swivel arm is provided with a rotatable tensioning roller supported on the traction means.
  • the swivel arm is rotatably mounted on the base part via a slide bearing by means of a hub.
  • a friction bushing is used as a sliding bearing between the parallel sliding bearing surfaces of the hub and the base part, which forms concentrically arranged conical surfaces.
  • a resilient support of the tensioning roller on the traction means is achieved by means of a helical torsion spring which concentrically encloses the hub of the swivel arm and is fastened to the swivel arm with a spring end on the base part and the further spring end.
  • EP 0 779 452 A2 shows a clamping device, the non-rotatable
  • the tension pulley connected to the swivel arm is on the Arranged from the friction bushing of the clamping device side of the swivel arm, which further increases the axial space of the entire clamping device.
  • a cylindrical helical torsion spring which acts as a tension spring, serves as the spring means, which is arranged between the base part and the swivel arm and which non-positively acts on the conically shaped friction bushing.
  • This known helical torsion spring which is adapted to the largest diameter of the friction bushing, has a large number of turns and thus requires a large installation space both in the axial and in the radial direction.
  • the invention is based on the object of creating a space-optimized clamping device.
  • a helical torsion spring which is adapted to the conical shape of the friction bushing. Furthermore, a tensioning roller arrangement is provided which is arranged within an axial width of the fixed base part and the swivel arm hub.
  • the use of a conically wound helical torsion spring advantageously increases the spring wire length of the helical torsion spring, which has an advantageous effect on the damping characteristic or the vibration behavior of the tensioning device.
  • a further optimization of the installation space in the radial direction can be realized in that the tensioning roller is arranged on the swivel arm in such a way that it is assigned to the area of the spring end of the helical torsion spring with the smallest diameter.
  • the geometric structure of the tensioning device according to the invention thus realizes, for example, a tensioning roller which is directly assigned to the base body or the contact surface of the entire tensioning device and which thus enables a traction means which is guided relatively closely to the contour of the internal combustion engine. Furthermore, a short swivel arm and thus shortened lever arm for the tensioning roller can be realized, which also affects the required installation space of the tensioning device. Due to the fact that the smallest diameter of the helical Despite the compact design of the tensioning device, the tensioning roller provides sufficient clearance or swivel angle between these components, which does not adversely affect the actuating capacity, despite the compact design of the tensioning device.
  • the space required for a tensioning device is essentially determined by the geometric design of the helical torsion spring and the position of the tensioning roller.
  • the measures according to the invention the use of helical torsion springs, the spring windings of which have different pitch circle diameters, and a tensioning roller arrangement which is assigned to the smallest pitch circle diameter of the helical torsion spring, make it possible to implement a compact, space-optimized tensioning device.
  • the mechanical tensioning device according to the invention advantageously does not require a long lever arm of the swivel arm. In connection with this, a weaker helical spring can be used, which has an advantageous effect on the axial length of the helical spring.
  • the invention includes a tensioning device, the tensioning roller of which is assigned to the free end of the base part in an installed position.
  • a tensioning device the tensioning roller of which is assigned to the free end of the base part in an installed position.
  • Such a construction of the tensioning device provides that the tensioning roller is rotatably attached to the swivel arm on the side facing away from the support surface of the base part.
  • the conically wound helical torsion spring with the largest pitch circle diameter is preferably assigned to the swivel arm.
  • the helical torsion spring tapers in the direction of the base part continuously, the windings of the helical torsion spring being guided on the conical surface of the swivel arm hub or running at a small radial distance from it.
  • This installation position favors a tensioning roller arrangement on the side of the swivel arm facing the contact surface of the tensioning device. Since the tensioning roller is assigned to the end area of the helical torsion spring with the smallest pitch circle diameter, a swivel arm with a short lever can be used at the same time. This arrangement creates a sufficient radial distance between the tensioning roller and the helical torsion spring or between the tensioning roller and the base part of the tensioning device.
  • An advantageous embodiment of the invention comprises a base part with an integrally molded truncated cone for guiding or receiving the friction bushing.
  • the invention includes a base part, to which a separate guide bush is assigned, on the conical surface of which the friction bush rests.
  • a helical torsion spring is provided, which is supported in the installed position with the largest pitch circle diameter on the swivel arm, from which the screw turns taper continuously in the direction of the base part.
  • the tensioning device also includes a support disk.
  • the support disk is fastened to the end of the base part which faces away from the contact surface with which the base part bears against a machine element.
  • the tensioning device according to the invention is preferably provided with a helical torsion spring designed as a compression spring.
  • the invention also includes a helical torsion spring designed as a tension spring. Regardless of the mode of action of the helical torsion springs, they are integrated in the tensioning device in such a way that that between the swivel arm and the base part or a separate guide bushing provided cone force is applied.
  • FIG. 1 shows a longitudinal section of a tensioning device according to the invention, the tensioning roller of which is attached to the swivel arm in the direction of a contact surface of the tensioning device;
  • FIG. 2 shows a tensioning device with a tensioning roller fastened on the side of the swivel arm facing away from the support surface of the tensioning device.
  • the tensioning device 1 a shown in FIG. 1 is supported with a base part 2 a stationary over a contact surface 3 on a machine part 4 or a machine element, for example the crankcase of an internal combustion engine.
  • a guide bushing 5 which has a conical outer surface 6, is fixed in position on the base part 2a on a cylindrical section.
  • the guide bush 5 is assigned to the base part 2a in such a way that its largest diameter range is assigned to the free end of the base part 2a and its conical outer surface 6 tapers continuously in the direction of the contact surface 3.
  • the guide bush 5 is concentrically surrounded by a hub 7 of a swivel arm 8 at a radial distance, the components, the guide bush 5 and the swivel arm 8 each forming conical surfaces 9a, 9b in the region of the hub 7, which radially limit an installation space 10 for a friction bushing 11.
  • a helical torsion spring 12 designed as a compression spring is used, the first spring end 13 of which is fixed in position on the base part 2a and the second spring end 14 of which is assigned to the swivel arm 8.
  • the helical torsion spring 12 is wound conically in accordance with an outer contour of the hub 7 of the swivel arm 8. This increases the spring wire length of the helical torsion spring 12 compared to a cylindrically wound spring. In addition to an expanding force, the helical torsion spring 12 exerts a force component acting in the circumferential direction, as a result of which the swivel arm 8 is supported in a spring-loaded manner on a traction means 16 in connection with a rotatable tensioning roller 15 arranged at the end.
  • the clamping device 1b shown in FIG. 2 is component-optimized compared to the clamping device 1a.
  • the base part 2b has a conical lateral surface 19 which, together with the hub 7 of the swivel arm 8, form the conical surfaces 9a, 9b which form the installation space 10 for the friction bushing 11 at a radial distance.
  • the tensioning device 1b shown in FIG. 2 is supported on the machine part 4 via the contact surface 20 of the base part 2b.
  • This design of the base part 2b has the effect that the swivel arm 8 is assigned to the machine part 4 and thus the tensioning roller 15 is arranged at a greater axial distance from the machine part 4 in comparison to FIG. 1.
  • the tensioning device 1b also has a compact design, the width “Y” of the swivel arm 8 in connection with the tensioning roller 15 being smaller than the width dimension “X” of the base part 2b in connection with the support disk 21.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Abstract

Dispositif tendeur (1a) pour moyens de traction (16), comprenant une pièce de base fixée (2a), sur laquelle est monté en rotation un bras pivotant (8) coopérant avec un galet de serrage (15). Un ressort de torsion hélicoïdal enroulé coniquement est inséré entre la pièce de base (2a) et le bras pivotant (8).
PCT/EP2002/011281 2001-10-24 2002-10-09 Dispositif tendeur WO2003036130A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BR0206167-8A BR0206167A (pt) 2001-10-24 2002-10-09 Dispositivo tensor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10152364.5 2001-10-24
DE2001152364 DE10152364A1 (de) 2001-10-24 2001-10-24 Spannvorrichtung

Publications (1)

Publication Number Publication Date
WO2003036130A1 true WO2003036130A1 (fr) 2003-05-01

Family

ID=7703505

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2002/011281 WO2003036130A1 (fr) 2001-10-24 2002-10-09 Dispositif tendeur

Country Status (3)

Country Link
BR (1) BR0206167A (fr)
DE (1) DE10152364A1 (fr)
WO (1) WO2003036130A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006081853A1 (fr) * 2005-01-31 2006-08-10 Schaeffler Kg Dispositif pour fixer un organe monte de maniere a pouvoir tourner dans un entrainement par courroie
DE102015111809A1 (de) * 2015-07-21 2017-01-26 Muhr Und Bender Kg Spannvorrichtung
WO2018195673A1 (fr) * 2017-04-28 2018-11-01 Litens Automotive Partnership Tendeur de courroie de distribution à construction améliorée
CN110546405A (zh) * 2017-10-04 2019-12-06 利滕斯汽车合伙公司 具有改进的结构的正时皮带张紧器

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10350939A1 (de) * 2003-10-31 2005-05-25 Ina-Schaeffler Kg In einem Drehlager integrierte Dämpfungseinrichtung
DE102004008661A1 (de) * 2004-02-21 2005-09-08 Ina-Schaeffler Kg Aggregatetrieb an einer Maschine
DE102004025739A1 (de) * 2004-05-26 2005-12-15 Ina-Schaeffler Kg Spannvorrichtung für ein Umschlingungsmittel
DE102004028485A1 (de) * 2004-06-11 2005-12-29 Ina-Schaeffler Kg Spannvorrichtung für Riemen, Ketten und dergleichen
DE102005004309B4 (de) * 2005-01-31 2013-11-28 Schaeffler Technologies AG & Co. KG Zugmittelspanner mit mechanischer Dämpfung
DE102005034322A1 (de) 2005-07-22 2007-01-25 Schaeffler Kg Dämpfungsvorrichtung für einen Zugmitteltrieb
DE102006042105A1 (de) * 2006-09-07 2008-03-27 Schaeffler Kg Spannvorrichtung für einen Zugmitteltrieb
DE102007016007A1 (de) 2007-04-03 2008-10-09 Schaeffler Kg Automatisches Spannsystem für einen Zugmitteltrieb und Verfahren zur Montage eines solchen Spannsystems
DE102007020738A1 (de) 2007-05-03 2008-11-06 Schaeffler Kg Spannvorrichtung für einen Zugmitteltrieb
DE102008046425A1 (de) 2008-09-09 2010-03-11 Schaeffler Kg Zugmittelspannvorrichtung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08270742A (ja) * 1995-03-28 1996-10-15 Unitta Co Ltd ベルトテンショナー
EP0779452A2 (fr) 1995-12-12 1997-06-18 Firma Muhr und Bender Dispositif de tension de courroie
US5795257A (en) * 1995-11-02 1998-08-18 Ina Walzlager Schaeffler Kg Tensioning device for traction means with cone-type sliding bearing

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3742030C2 (de) * 1987-12-11 1997-06-19 Skf Gmbh Schwenklager für Spannvorrichtungen
DE29518314U1 (de) * 1995-11-02 1996-01-11 INA Wälzlager Schaeffler KG, 91074 Herzogenaurach Spanneinrichtung für Zugmittel mit Konus-Gleitlager
DE19631507A1 (de) * 1996-08-03 1998-02-05 Bayerische Motoren Werke Ag Spannvorrichtung für einen Riementrieb
DE19907668A1 (de) * 1999-02-23 2000-08-31 Daimler Chrysler Ag Riementrieb

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08270742A (ja) * 1995-03-28 1996-10-15 Unitta Co Ltd ベルトテンショナー
US5795257A (en) * 1995-11-02 1998-08-18 Ina Walzlager Schaeffler Kg Tensioning device for traction means with cone-type sliding bearing
EP0779452A2 (fr) 1995-12-12 1997-06-18 Firma Muhr und Bender Dispositif de tension de courroie

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 02 28 February 1997 (1997-02-28) *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006081853A1 (fr) * 2005-01-31 2006-08-10 Schaeffler Kg Dispositif pour fixer un organe monte de maniere a pouvoir tourner dans un entrainement par courroie
DE102015111809A1 (de) * 2015-07-21 2017-01-26 Muhr Und Bender Kg Spannvorrichtung
WO2018195673A1 (fr) * 2017-04-28 2018-11-01 Litens Automotive Partnership Tendeur de courroie de distribution à construction améliorée
US11353092B2 (en) 2017-04-28 2022-06-07 Litens Automotive Partnership Timing belt tensioner with improved construction
CN110546405A (zh) * 2017-10-04 2019-12-06 利滕斯汽车合伙公司 具有改进的结构的正时皮带张紧器
CN110546405B (zh) * 2017-10-04 2023-09-05 利滕斯汽车合伙公司 具有改进的结构的正时皮带张紧器

Also Published As

Publication number Publication date
DE10152364A1 (de) 2003-05-08
BR0206167A (pt) 2004-02-03

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