EP1900482A1 - Appareil de tension pour tendeur à ressort - Google Patents

Appareil de tension pour tendeur à ressort Download PDF

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Publication number
EP1900482A1
EP1900482A1 EP07016880A EP07016880A EP1900482A1 EP 1900482 A1 EP1900482 A1 EP 1900482A1 EP 07016880 A EP07016880 A EP 07016880A EP 07016880 A EP07016880 A EP 07016880A EP 1900482 A1 EP1900482 A1 EP 1900482A1
Authority
EP
European Patent Office
Prior art keywords
drive
tensioning device
spring
clamping device
centering cone
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
EP07016880A
Other languages
German (de)
English (en)
Other versions
EP1900482B1 (fr
Inventor
Thomas Sjösten
Stefan Baur
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.)
Klann Spezial Werkzeugbau GmbH
Original Assignee
Klann Spezial Werkzeugbau 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 Klann Spezial Werkzeugbau GmbH filed Critical Klann Spezial Werkzeugbau GmbH
Publication of EP1900482A1 publication Critical patent/EP1900482A1/fr
Application granted granted Critical
Publication of EP1900482B1 publication Critical patent/EP1900482B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
    • B25B27/30—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same positioning or withdrawing springs, e.g. coil or leaf springs
    • B25B27/302—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same positioning or withdrawing springs, e.g. coil or leaf springs coil springs other than torsion coil springs
    • B25B27/304—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same positioning or withdrawing springs, e.g. coil or leaf springs coil springs other than torsion coil springs by compressing coil springs

Definitions

  • the invention relates to a tensioning device for spring tensioner, which is axially insertable into an exciting coil spring and which is releasably connectable with their ends having a breakthrough pressure plate, wherein the tensioning device for adjusting the distance of the pressure plates at one end of a drive, in particular in the form of a provided with an externally accessible key profile spindle drive, and wherein each of the pressure plates is insertable into a spring coil of the coil spring to be clamped.
  • Clamping devices for spring tensioners have been known for some time.
  • a spring tensioner described which consists of such a central tensioning device, which is detachably engageable via two pressure plates for tensioning a coil spring.
  • the tensioning device consists of a total of three tubular elements which are telescopically slidable.
  • other variants are known from the prior art, which consist of only two telescopic tubes. In the variant with three pipe elements, the smallest in diameter pipe element at its free end on positive locking elements, with which the clamping device with the first pressure plate is positively engageable in engagement.
  • an opening is provided in the pressure plate, through which the tensioning device with its positive locking elements therethrough plug-in and with recesses in the edge region of the opening form-fitting engageable.
  • This trained as a threaded pipe tail pipe of the clamping device is connected via a telescopic tube with a so-called housing tube in connection, which is also provided in its the positive-locking elements of the threaded tube end portion with positive locking elements.
  • the second pressure plate of this known spring tensioner is also provided with a breakthrough, with which the pressure plate with the positive locking elements of the housing tube is fixedly engageable engaged.
  • a breakthrough for tensioning a coil spring, in this embodiment of a spring tensioner, first the pressure plates are inserted into the respective spring coil of the coil spring to be received. Subsequently, the tensioning device is guided inside the coil spring through the openings of the two pressure plates and correspondingly brought into engagement with the apertures of the pressure plates.
  • the distance between the pressure plates in the axial direction is shortened by actuating the drive of the tensioning device designed as a spindle drive, so that the helical spring is necessarily tensioned.
  • a threaded spindle is provided in the tubular elements, which is provided in the region of the positive locking elements of the housing tube with an axially projecting key profile. The threaded spindle engages with its other end in the opposite side of the key profile threaded tube of the clamping device, so that when pressing the threaded spindle shortening of the clamping device takes place.
  • the threaded spindle is supported on the drive side in the region of the key profile axially via a thrust bearing in a head portion of the housing tube.
  • the housing tube forms with its form-fitting element a kind of actuator which is moved by actuating the threaded spindle on the positive locking elements of the threaded tube, whereby the clamping operation of the coil spring is effected.
  • the tensioning device in order to be able to bring it into engagement with the two pressure plates seated in the helical spring can generally be guided through a through bore of the axle body, wherein in the region of this opening the helical spring on the axle body is recorded in a fixed spring plate.
  • the coil spring outside the motor vehicle is first to be clamped "on block", so that the complete unit consisting of helical spring and spring tensioner can be inserted between the axle body and the body of the motor vehicle. Subsequently, the clamping device is relaxed by operating the drive or key profile. After complete relaxation of the spring tensioner, the tensioning device must now be removed from the pressure plates and then threaded through the aperture of the axle body. In this case, it has been found that the tensioning device with its radially widened head part frequently rests in the edge region of the aperture of the axle body, in particular in the case of oblique or curved helical springs, and thus can only be removed again with difficulty.
  • the invention has for its object to design a clamping device of the generic type such that it can be threaded in particular from the axle body in a simple manner and through its breakthrough.
  • the object is achieved in that the drive projects axially beyond the clamping device and that between the drive and the clamping device is provided to the clamping device radially expanding centering cone.
  • a centering cone is provided between the drive of the clamping device and the clamping device itself, which is designed to be radially expanded to the clamping device. This means that this centering cone is radially tapered to the drive or its key profile and accordingly has a smaller diameter, which is smaller than the diameter of the opening of the axle body, from which the clamping device must be removed.
  • the diameter of the centering cone in the region of the clamping device corresponds at least to the diameter of the clamping device.
  • the diameter of the centering cone in the region of the drive corresponds approximately to the diameter of the drive or slightly larger or smaller than the diameter of the drive. This means that the smallest possible diameter is provided here. If a socket is used, which can be plugged onto the drive itself or its key profile, then the diameter of the centering cone can also be approximately corresponding to the (larger) diameter of this socket or minimally smaller. Even with this configuration, no results between the socket and the centering cone Radial stage, so that a proper sliding along the tensioning device is first ensured along the socket and then along the centering cone from the axle body.
  • the centering cone can be an integral part of the drive.
  • drive is meant, for example, a drive hexagon on which the aforementioned socket is attachable.
  • This embodiment has the advantage that retrofitting is also easily possible by replacing the already existing drive by the drive provided with the centering cone.
  • the centering cone can also be placed as a separate component on the housing tube of the clamping device or inserted into this.
  • the single drawing figure shows a spring tensioner 1 with a tensioning device 2 according to the invention in use.
  • the tensioning device 2 has a total of three telescopically displaceable tubular elements.
  • the upper tube element is designed as a threaded tube 3, which can be brought into tension connection with its free end region via interlocking elements 4 with a first pressure plate 5.
  • This first pressure plate 5 is engaged with a spring coil 6 of a coil spring 7 in engagement.
  • the upper threaded tube 3 is inserted axially adjustable in a central telescopic tube 8, which in turn is inserted into a lower housing tube 9 inserted.
  • the housing tube 9 in its opposite the form-locking elements 4 of the threaded tube 3 end portion a radially enlarged head portion 10, which forms a radially expanded bearing seat 11.
  • a second, lower Pressure plate 12 is arranged, which in turn is in engagement with a lower spring coil 13 of the coil spring 7.
  • the coil spring 7 is received with its lower end turn 14 in a kind of spring plate 15 in an axle body 16.
  • the clamping device 2 in the axial extension of its housing tube 9 a drive in the form of a drive hexagon 18, on which by way of example a socket 19 is attached.
  • a socket 19 By means of this socket 19 and another suitable tool thus located in the interior of the clamping device 2 spindle drive is rotationally driven, whereby the distance between the bearing seat 11 and the interlocking elements 4 can be shortened or increased.
  • a centering cone 20 is arranged, whose diameter is larger in the region of the head part 10 than in the area of the drive hexagon 18.
  • the centering cone 20 is an integral part of the drive hexagon 18 and thus can together with this attached to the lower end of the threaded spindle not visible in the drawing and connected to this rotation.
  • the centering cone 20 in the region of the drive hexagon 18 has a minimally larger diameter than the drive hexagon 18. It can be seen that the centering cone 20 has a considerably smaller diameter, in particular with respect to the drive hexagon 18, than the breakthrough 17.
  • the tensioning device 2 with its centering cone 20 along the inwardly directed opening 17 to slide so that it can be removed from the axle body 16 in a simple manner.
  • the centering cone 20 may also have a smaller diameter than the drive hexagon 18 in the transition region to the drive hexagon 18, in particular when the centering cone 20 is inserted as a separate component, for example, in the head part 10 of the housing tube 9. This has the advantage, in particular when the socket 19 has been removed, that no radially projecting edge is formed in this transition region between the drive hexagon 18 and the centering cone 20, with which the tensioning device 2 could catch on the opening 17.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
EP07016880.2A 2006-09-12 2007-08-29 Appareil de tension pour tendeur à ressort Active EP1900482B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200620014173 DE202006014173U1 (de) 2006-09-12 2006-09-12 Spanngerät für Federspanner

Publications (2)

Publication Number Publication Date
EP1900482A1 true EP1900482A1 (fr) 2008-03-19
EP1900482B1 EP1900482B1 (fr) 2014-07-30

Family

ID=37545503

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07016880.2A Active EP1900482B1 (fr) 2006-09-12 2007-08-29 Appareil de tension pour tendeur à ressort

Country Status (2)

Country Link
EP (1) EP1900482B1 (fr)
DE (1) DE202006014173U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009057516A1 (de) 2008-12-11 2010-07-22 Franz Xaver Hamann Einbauteil einer Fahrwerksfederung, insbesondere Fortsatz einer Schrauben- bzw. Spiralfeder

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009006644A1 (de) 2009-01-29 2010-08-05 Audi Ag Verfahren und Vorrichtung zum Montieren eines Federbeines

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3733723A1 (de) * 1986-10-10 1988-04-21 Kleinbongartz & Kaiser Werkzeu Federnspanner
EP0271782A2 (fr) * 1986-12-11 1988-06-22 Horst Klann Etau à ressort
DE29906349U1 (de) * 1999-04-09 1999-07-15 SSW Schmack Spezialwerkzeuge GmbH & Co. Entwicklungs KG, 36041 Fulda Spannvorrichtung für Schrauben-Druckfedern
DE20101841U1 (de) * 2001-02-03 2001-05-31 Hazet-Werk Hermann Zerver GmbH & Co. KG, 42857 Remscheid Spannvorrichtung für Schraubenfedern
US20030098448A1 (en) * 2001-11-27 2003-05-29 Klann Horst Eccentric pressure plates for spring vices
DE10261000B3 (de) * 2002-12-24 2004-05-13 Klann-Spezial-Werkzeugbau-Gmbh Kombinationsfederspanner

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3733723A1 (de) * 1986-10-10 1988-04-21 Kleinbongartz & Kaiser Werkzeu Federnspanner
EP0271782A2 (fr) * 1986-12-11 1988-06-22 Horst Klann Etau à ressort
DE29906349U1 (de) * 1999-04-09 1999-07-15 SSW Schmack Spezialwerkzeuge GmbH & Co. Entwicklungs KG, 36041 Fulda Spannvorrichtung für Schrauben-Druckfedern
DE20101841U1 (de) * 2001-02-03 2001-05-31 Hazet-Werk Hermann Zerver GmbH & Co. KG, 42857 Remscheid Spannvorrichtung für Schraubenfedern
US20030098448A1 (en) * 2001-11-27 2003-05-29 Klann Horst Eccentric pressure plates for spring vices
DE10261000B3 (de) * 2002-12-24 2004-05-13 Klann-Spezial-Werkzeugbau-Gmbh Kombinationsfederspanner

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009057516A1 (de) 2008-12-11 2010-07-22 Franz Xaver Hamann Einbauteil einer Fahrwerksfederung, insbesondere Fortsatz einer Schrauben- bzw. Spiralfeder
DE102009057516B4 (de) * 2008-12-11 2016-06-02 Franz Xaver Hamann Einbauteil einer Fahrwerksfederung in der Form eines Fortsatzes einer Schrauben- bzw. Spiralfeder sowie eine entsprechende Fahrwerkfederung und ein dazugehöriges Höhenniveauregulierungsverfahren
DE202009019099U1 (de) 2008-12-11 2016-07-11 Franz Xaver Hamann Einbauteil einer Fahrwerksfederung in der Form eines Fortsatzes einer Schrauben- bzw. Spiralfeder sowie eine entsprechende Fahrwerkfederung

Also Published As

Publication number Publication date
EP1900482B1 (fr) 2014-07-30
DE202006014173U1 (de) 2006-11-30

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