EP2671683A1 - Pressure plate for a spring compressor - Google Patents

Pressure plate for a spring compressor Download PDF

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Publication number
EP2671683A1
EP2671683A1 EP13002658.6A EP13002658A EP2671683A1 EP 2671683 A1 EP2671683 A1 EP 2671683A1 EP 13002658 A EP13002658 A EP 13002658A EP 2671683 A1 EP2671683 A1 EP 2671683A1
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EP
European Patent Office
Prior art keywords
spring
plate
pressure plate
pressure
holding elements
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
EP13002658.6A
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German (de)
French (fr)
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EP2671683B1 (en
EP2671683B8 (en
Inventor
Stefan Baur
Thomas Sjösten
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.)
GEDORE AUTOMOTIVE GMBH
Original Assignee
Klann Spezial Werkzeugbau GmbH
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Publication of EP2671683A1 publication Critical patent/EP2671683A1/en
Publication of EP2671683B1 publication Critical patent/EP2671683B1/en
Application granted granted Critical
Publication of EP2671683B8 publication Critical patent/EP2671683B8/en
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    • 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 spring tensioner for clamping a recorded between a lower and an upper spring plate under tension coil spring of a Federdämpferbeines consisting of an actuator and two support elements, the distance for tensioning the coil spring and the Federdämpferbeins by the operation of the actuator is variable, wherein one of Supporting elements has two engageable with the upper spring plate of the spring damper leg and / or a spring coil of the coil spring engageable holding elements, which are relative to each other adjustably connected to the actuator.
  • Spring damper legs generally consist of a damper tube disposed in a shock absorber and a coil received between an "upper” and a “lower” spring plate under bias coil spring.
  • the shock absorber has an axially movable piston rod, on the free, protruding from the damper tube end of the "upper” spring plate is removably mounted.
  • the lower spring plate is usually fixedly arranged on the damper tube.
  • the upper spring plate of the piston rod can still be provided with a rotatably mounted on a pivot bearing above the upper spring plate mounting plate, via which the spring damper strut is rotatably fastened to the body of a motor vehicle.
  • the support elements each in the form of a gripper claw, which are directly engageable with one of the spring coils of the coil spring into engagement.
  • the two support elements or gripper claws are each inclined towards each other to the longitudinal center axis of the actuator, so that means of this spring compressor, in particular bent in a motor vehicle built-in coil springs can be tensioned.
  • coil springs are not usually part of a spring damper leg.
  • spring tensioners are fundamentally similar built like spring tensioners, which are used especially for the tensioning of coil springs of a spring shock absorber leg.
  • one of the support elements is designed as a gripper claw, which can be brought into engagement with the spring coil of a coil spring arranged in a spring strut.
  • the second support member is formed as a kind of support ring and is placed on the upper spring plate of the spring damper strut for tensioning the coil spring.
  • the bearing surface of this support ring can be adapted to the contour, in particular the pitch of the spring plate.
  • a disadvantage of the constructions described above is that a plurality of interchangeable sets of differently shaped support elements must be provided for clamping differently shaped spring damper legs.
  • the support elements have here holding elements which are fastened via pivotable support arms to a frame.
  • the distance between the holding elements is adjustable transversely to the longitudinal center axis of the respective helical spring on the diameter thereof by pivoting the support arms.
  • the holding elements are hook-shaped and can be hung in one of the spring coils of the coil spring. Since only two retaining hooks are provided, which are to be set in diametrically opposite areas of a spring coil and the respective spring coil can not be fixed otherwise, here despite a certain variability in the adaptation to different sized coil springs the risk of slipping of the retaining hooks.
  • the actuator is designed as a telescopically adjustable length telescopic tube.
  • a support member is fixedly arranged in the upper end of the telescopic tube.
  • This support element forms two pivotable mounting bracket, are arranged at the free ends of each formed as a retaining hook holding elements.
  • the retaining hooks are longitudinally adjustable in longitudinal slots of the support bracket and rotatably received.
  • the second support element is for receiving the Damper tube of the spring damper leg designed as a kind of pipe clamp and arranged stationary on the guide tube.
  • a spring compressor of the generic type for tensioning a coil spring of a Federdämpferbeins which consists of an actuator and two support elements whose distance is variable by an actuation of the actuator.
  • the support members may be fixedly connected to a part of the spring damper leg or the coil spring received under bias in the spring damper leg between a lower and an upper spring seat.
  • this spring compressor as variable as possible for differently dimensioned spring damper legs, one of the support elements on two holding elements which are relative to each other adjustably connected to the actuator.
  • the retaining elements are adjustable in their position and orientation to the geometry of a male spring coil or a male part of the spring damper leg.
  • the holding element can be freely adjusted in their distance from each other and the actuator. Furthermore, the retaining element - within certain limits - designed to pivot about a transverse axis to the spring damper axis, so that an adaptation to the pitch of a male spring coil and / or the surface contour of the upper spring plate is made possible.
  • the holding elements are each mounted on a guide rail, which in turn turn to two are laterally slidably received laterally to the actuator extending support rails.
  • the two support rails are integrally connected to each other and can be given from a horizontal starting position relative to a perpendicular to the actuator pivot axis extending by a predetermined Schenkwinkel.
  • the two guide rails are mounted on parking grooves or openings on the respective support rail and secured by a kind of self-locking in the respective set position.
  • This self-locking is effected by acting on the respective end region of the respective control rail transverse forces, whereby a clamping action between the respective opening and the associated mounting rail is formed.
  • the distance between the holding elements to the actuator is made possible by moving the respective holding element in a guide slot of the associated control rail.
  • the holding elements are secured via sliding blocks in the respective guide slot.
  • the respectively set relative position of the respective holding element to the actuator is effected by tilting the holding elements with their sliding blocks on the adjusting rail at a force on the holding elements.
  • this spring compressor is explicitly on the DE 10 2006 003 284 B3 directed. In operation, it has been shown that the design of this spring compressor in certain "extreme situations" with a certain uncertainty, in particular with respect to the self-locking design of its components is afflicted.
  • the invention is therefore the object of a spring compressor of the generic type safer to design, with a predetermined orientation of the upper spring plate is to be made possible relative to the spring tensioner.
  • the object is achieved according to the invention together with the features of the preamble of claim 1, characterized in that the axial support of the holding elements on the upper spring plate, a pressure plate is provided, which is stationary and / or releasably connected to the holding elements and that the pressure plate with the upper Spring plate is stationary brought into engagement.
  • a variably adjustable spring tensioner can be stabilized in a simple manner if necessary by the two holding elements are fixed against each other on the intended pressure plate. This reliably prevents their spacing and alignment from changing during the tightening process, thereby increasing safety in the application. Since the pressure plate can be brought into engagement with the upper spring plate, slipping or a change in position on the spring plate is also reliably avoided. Also, this pressure plate can be designed such that a certain applications predetermined orientation of the upper spring plate can be adjusted relative to the spring tensioner. For differently designed spring plates and differently designed pressure plates can be provided if necessary, without the spring tensioner itself changes must be made.
  • the pressure plate has a central opening and is releasably connected to the holding elements in each case via screw connections. Due to this configuration, the spring compressor, for example, after DE 10 2006 003 284 B3 retrofitted and remains equally applicable for its normal field of application in an advantageous manner.
  • the pressure plate can also be used for upper spring plate, which have a central, upwardly projecting, dome-like projection. The breakthrough can be adapted in dimensioning the dimensions of this projection, so that the patch pressure plate receives the projection in a form-fitting manner. Slipping or other change in position between the pressure plate and spring plate is thus safely excluded.
  • the central opening of the pressure plate is circular and that a pressure ring is provided which is inserted into the opening of the pressure plate and rotatably and detectably received in the breakthrough.
  • an angular orientation of the spring plate to the spring tensioner also an angular orientation of the spring plate is effected relative to the "remaining" Federdämpferbein so that the spring plate - at least visually - in a simple manner, for example, relative to a provided in the lower end of the damper tube a Federdämpferbeins, transverse bearing eye is alignable.
  • the pressure ring according to claim 4 may have an at least partially encircling, to the pressure plate out projecting bearing web.
  • the pressure plate in the surrounding region of the breakthrough has an angular scale and that the pressure ring is provided with at least one bar marking, which can be aligned by rotating the pressure ring in fürbuch the pressure plate on the angle scale in different angular positions to the printing plate.
  • the pressure ring is precisely aligned in its angular orientation on the pressure plate.
  • the pressure ring or the pressure plate or both the pressure plate and the pressure ring is provided with receiving holes open at the bottom. Is the printing plate itself with provided such receiving bores, so the spring plate with axially upwardly projecting threaded bolt, via which normally takes place the mounting on a motor vehicle body, are brought into engagement with the Duck plate in a predetermined angular position. Due to the rotatable mounting of the pressure ring in the pressure plate, a variable angular orientation of the spring plate to the spring tensioner and thus to the "remaining" spring damper leg is possible in a simple manner. In this case, different pressure rings can be provided with different, adapted to the arrangement of threaded bolts different spring plate arrangement.
  • the pressure plate can be provided with such mounting holes in different arrangements. If the receiving bores of the pressure ring are formed as through-holes, then corresponding retaining screws can be screwed through them into internal threads of the spring plate, which normally serve for fixed mounting of the spring plate on a motor vehicle body.
  • the pressure plate can be designed such that a predetermined angular orientation of the upper spring plate relative to the spring tensioner - at least visually - and thus to the remaining spring damper leg feasible is. Due to the possibly additionally provided pressure ring, the spring tensioner can be adapted on the one hand in a simple manner to differently shaped upper spring plate and on the other hand, the possibility of a variable angle adjustment of the upper spring plate to the spring tensioner and thus the remaining spring shock absorber leg is created.
  • Fig. 1 shows a perspective view of a possible embodiment of a pressure plate 1, via which two retaining elements of a spring compressor are fixedly connected to each other, as will be explained later.
  • the pressure plate 1 has a central, in the illustrated embodiment circular aperture 2.
  • the outer contour forms an irregular octagon, the dimensioning in the transverse direction of the arrow 3 is greater than in the longitudinal direction of the arrow 4.
  • the lying in the transverse direction of the arrow 3 end portions of the pressure plate 1 each form a mounting portion 5 and 6, via which the pressure plate 1 each with a retaining element of a spring compressor fixed in connection can be brought.
  • To detachable Connection with the corresponding holding element are in each of the mounting portions 5, 6 respectively two internal threads 7, 8 and 9, 10 are provided.
  • an angle scale 11 is arranged on the upper side of the printing plate 1.
  • This angle scale 11 is located in the illustratedariesbeilspiel in the peripheral region of the opening 2, which is directed to the "rear" transverse edge 12.
  • This angle scale 11 can serve for angular alignment of a spring plate of a spring damper leg (not shown in the drawing) that can be brought directly into pressure connection with the pressure plate.
  • FIG. 1 can be seen that in the region of the two mounting portions 5 and 6, in the immediate peripheral region of the opening 2 arcuate elongated holes 13, 14 are provided. These slots 13, 14 are used to selectively and adjustable mounting a pressure ring 20, which exemplifies in Fig. 2 is shown.
  • This pressure ring 20 forms on the underside a - in the present case annular - pressure surface 21, with which the pressure ring 20 on a correspondingly dimensioned spring plate of a Federdämpferbeins (not shown in the drawing) can be placed.
  • This pressure surface 21 axially opposite the pressure ring 20 is provided on the upper side with a circumferential support surface 22, via which the pressure ring 20 in the assembled state on the underside of the pressure plate 1 from Fig. 1 axially supported in the vicinity of the opening 2.
  • the annular support surface 22 is presently limited radially inwardly by a circumferential, axially projecting in the direction of the arrow 23 bearing web 24, which fits in the circular opening 2 of the pressure plate 1 from Fig. 1 can be used.
  • This bearing bar can also be formed divided in the circumferential direction and form individual ring segments.
  • the bearing bar 24 has two diametrically opposite bar marks 25, 26, with which the Pressure ring 20 in the assembled state optionally on the angle scale 11 of the pressure plate 1 can be aligned.
  • the pressure ring 20 in the region of its upper support surface 22 in the transverse direction of the arrow 3 has two diametrically opposite mounting threads 27, 28 whose arrangement - with a corresponding alignment of one of the two bar marks 25 or 26 on the angle scale 11 of the printing plate 1 - Arrangement of the two slots 13 and 14 corresponds. If, for example, the bar marking 25 is aligned centrally on the angle scale 11, then the mounting thread 27 is approximately centrally in the region of the elongated hole 13 and the mounting thread 28 approximately centrally in the region of the slot 14. According to the circumferential extent of the elongated holes 13 and 14, the pressure ring 20 is thus limited rotation relative to the pressure plate 1.
  • the pressure ring 20 On the underside of the pressure ring 20 is provided in the region of its lower pressure surface 21 with a total of four receiving holes 29, 30, 31, 32, which serve in use for receiving upwardly projecting threaded bolt of a spring plate (not shown in the drawing).
  • the arrangement and the number of these receiving holes 29, 30, 31, 32 is adapted to the arrangement of upwardly projecting threaded bolt of a spring plate.
  • This mounting holes of the pressure ring 20 can be brought into engagement in a predetermined angular position with the spring plate.
  • a spring plate on the in the pressure plate 1 is made Fig.
  • receiving holes 15 may be provided, as in Fig. 1 shown in dashed lines.
  • the pressure plate 1 can also be fixedly brought into engagement with a spring plate, which has instead of axially projecting threaded bolt corresponding internal thread by corresponding fastening screws are screwed through the through holes and screwed into the internal thread.
  • Fig. 3 shows an example of an embodiment of the "upper" end portion of a spring tensioner 40, with which the pressure plate 1 and the pressure ring 20 of the Fig. 1 and 2 can be used.
  • This embodiment of a spring tensioner 40 is fully circumferential in the DE 10 2006 003 284 B3 described so that the further embodiment, which on the representation of the Fig. 3 goes out to the DE 10 2006 003 284 B3 is referenced.
  • the spring tensioner 40 has an actuator 41 with a guide tube 42.
  • the guide tube 41 is provided with an at least approximately over its entire length extending adjusting slot 43.
  • the guide tube 42 has a radially enlarged, cylindrical receiving portion 44, which serves for the rotatable and axially fixed receiving a drive head 45.
  • This drive head 45 is connected to a in Fig. 3 suggestively recognizable adjusting spindle 46 in a rotationally fixed connection.
  • a support member 47 in the direction of the double arrow 48 is placed longitudinally displaceable.
  • the support member 47 has a bearing member 49 which is non-rotatably engaged with a disposed within the guide tube 42 adjusting nut (not visible in the drawing) in operative connection.
  • the adjusting spindle 46 via the drive head 45, the adjusting nut is adjusted within the guide tube 42 in the direction of the double arrow 48, whereby a corresponding adjusting movement of the bearing element 49 and thus the entire support member 47 along the guide tube 42 is effected.
  • the bearing element 49 on the outside on a flat support surface 50, in the region of a support member 51 is pivotally mounted about a pivot axis 52.
  • This support member 51 forms two laterally projecting, mutually aligned support rails 53, 54 which extend in the illustrated "middle position" of the support member 51 perpendicular to the longitudinal central axis 55 of the guide tube 42.
  • each support rail 53, 54 each have a control rail 56 and 57 longitudinally displaceable in the direction of the double arrow 3.
  • Each of the adjusting rails 56, 57 is provided with a guide slot 58 or 59, which respectively serve to receive a holding element 60 or 61.
  • the two Haleimplantation 60, 61 are adjustably mounted in the guide slots 58, 59 in the direction of the double arrow 4, wherein the two holding elements 60 and 61 with the respective stepped trained guide slot 58 and 59 are engaged and in this engaged position by a respective sliding blocks 62nd and 63 are secured.
  • the mounting of the two holding elements 60, 61 on the respective adjusting rail 56 or 57 is configured such that the holding elements 60, 61 are each limited to rotate about a rotational axis 64 and 65 in the direction of the double arrow 66 and 67, respectively.
  • the holding elements 60 and 61 are adapted to suitably different slopes of a male spring coil, a male spring plate or a rotary bearing head of a spring damper leg in a simple manner. Due to the further adjustability of the holding elements 60 and 61 in the direction of the double arrow 4 and the two adjusting rails 56 and 57 in the direction of the double arrow 3, the support member 47 is variably adaptable to the dimension of a Federdämpferbeins.
  • the pressure plate 1 is made Fig. 1 provided, which is fixedly coupled to the two holding elements 60 and 61.
  • the two holding elements 60 and 61 are each provided with two through holes 68 and 69, via which the pressure plate 1 with the holding elements 60 and 61 can be screwed.
  • FIG. 4 Such a mounted state shows Fig. 4 , It can be seen that the pressure plate 1 is fixedly and detachably mounted on the underside on both holding elements 60 and 61 via corresponding mounting screws 70 and 71, respectively. By this coupling of the two holding elements 60 and 61, these are fixed against each other, so that in particular an unintentional adjustment in the direction of the double arrow 3 is excluded and thus in particular slipping is reliably excluded from an upper spring plate.
  • the central opening 2 can serve to receive an upwardly, axially projecting dome of a spring plate. If such a spring plate provided with upwardly projecting threaded bolts, they can be received in the through holes 15 of the pressure plate 1, so that the pressure plate 1 and thus the entire spring compressor 40 is set securely in the state attached to the spring plate of the spring damper leg state.
  • a spring plate provided with upwardly projecting threaded bolts, they can be received in the through holes 15 of the pressure plate 1, so that the pressure plate 1 and thus the entire spring compressor 40 is set securely in the state attached to the spring plate of the spring damper leg state.
  • different sized pressure plates 1 may be provided, which can be coupled to each other interchangeable with the two holding elements 60 and 61.
  • the pressure ring 20 can also be made Fig. 2 be used.
  • Fig. 5 a perspective view of the spring tensioner 40 with the mounted pressure plate 1 and the pressure ring 20 inserted therein. It can be seen that the pressure ring 20 with its bearing bar 24 fits in the circular Breakthrough 2 of the printing plate 1 is inserted.
  • the pressure ring 20 is connected by means of two screws 73 and 74 fixed to the pressure plate 1. When the screws 73, 74 are released, the pressure ring 20 is rotatable relative to the pressure plate 1 in the direction of the double arrow 72.
  • the angular position of the pressure ring 20 can be precisely adjusted relative to the pressure plate 1 and thus relative to the spring tensioner 40 to a predetermined value together with a recorded spring plate.
  • Another advantage of using an "additional" pressure ring 20 is that this, as out Fig. 5 can be seen, a smaller diameter breakthrough 33 and thus an adaptation to spring plate of different dimensions is facilitated. In particular, only one printing plate 1 necessary and a change from a too exciting spring shock absorber leg to a different sized spring damper leg is possible without having to replace the pressure plate 1. For tensioning and relaxing Federdämpferbeinen with different sized spring plates and / or differently arranged threaded bolt thus only different pressure rings 20 are provided to ensure a variable and safe use of a spring compressor 40.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Springs (AREA)

Abstract

The compressor has an actuator actuated for varying distance between supporting elements for tensioning a helical spring or a spring damper. One of the supporting elements includes two holding elements that are engaged with an upper spring plate and/or a spring coil of the spring. The holding elements are connected with the actuator relative to each other, and a pressure plate (1) axially supports the holding elements at the plate and is detachably connected with the holding elements. The pressure plate is engaged with the plate.

Description

Die Erfindung betrifft einen Federspanner zum Spannen einer zwischen einem unteren und einem oberen Federteller unter Vorspannung aufgenommenen Schraubenfeder eines Federdämpferbeines bestehend aus einem Stellglied sowie zwei Stützelementen, deren Abstand zum Spannen der Schraubenfeder bzw. des Federdämpferbeins durch die Betätigung des Stellgliedes veränderbar ist, wobei eines der Stützelemente zwei mit dem oberen Federteller des Federdämpferbeines und/oder einer Federwindung der Schraubenfeder in Eingriff bringbare Halteelemente aufweist, welche relativ zueinander verstellbar mit dem Stellglied in Verbindung stehen.The invention relates to a spring tensioner for clamping a recorded between a lower and an upper spring plate under tension coil spring of a Federdämpferbeines consisting of an actuator and two support elements, the distance for tensioning the coil spring and the Federdämpferbeins by the operation of the actuator is variable, wherein one of Supporting elements has two engageable with the upper spring plate of the spring damper leg and / or a spring coil of the coil spring engageable holding elements, which are relative to each other adjustably connected to the actuator.

Federdämpferbeine bestehen im Allgemeinen aus einem in einem Dämpferrohr angeordneten Stoßdämpfer und einer zwischen einem "oberen" und einem "unteren" Federteller unter Vorspannung aufgenommenen Schraubenfeder. Der Stoßdämpfer weist eine axial bewegliche Kolbenstange auf, an deren freiem, aus dem Dämpferrohr herausragenden Ende der "obere" Federteller abnehmbar angeordnet ist. Der untere Federteller ist in der Regel feststehend am Dämpferrohr angeordnet. Des Weiteren kann der obere Federteller der Kolbenstange noch mit einer über ein Drehlager oberhalb des oberen Federtellers drehbar angeordneten Montageplatte versehen sein, über welche das Federdämpferbein drehbar an der Karosserie eines Kraftfahrzeuges befestigbar ist. Auch sind Konstruktionen bekannt, insbesondere bei nicht lenkbaren Achsen, bei welchen der obere Federteller "direkt" an der Karosserie des Kraftfahrzeuges über Montageschrauben oder nach oben vorstehende Gewindebolzen befestigt ist. Im unteren Endbereich kann am Dämpferrohr ein quer zum Dämpferrohr verlaufendes Lagerauge vorgesehen sein, über welches das Federdämpferbein an einem Achskörper der Kraftfahrzeugachse befestigt ist.Spring damper legs generally consist of a damper tube disposed in a shock absorber and a coil received between an "upper" and a "lower" spring plate under bias coil spring. The shock absorber has an axially movable piston rod, on the free, protruding from the damper tube end of the "upper" spring plate is removably mounted. The lower spring plate is usually fixedly arranged on the damper tube. Furthermore, the upper spring plate of the piston rod can still be provided with a rotatably mounted on a pivot bearing above the upper spring plate mounting plate, via which the spring damper strut is rotatably fastened to the body of a motor vehicle. Also constructions are known, especially in non-steerable axles, in which the upper spring plate is "directly" attached to the body of the motor vehicle via mounting screws or upwardly projecting threaded bolt. In the lower end of a damper tube extending transversely to the damper tube Be provided bearing eye, via which the spring damper strut is attached to an axle body of the motor vehicle axle.

Zu Reparaturzwecken, sei es zum Austauschen des Stoßdämpfers oder der Schraubenfeder, werden sog. Federspanner eingesetzt. Hierzu wird beispielhaft auf die DE 196 31 524 C1 , DE 296 22 463 U1 , DE 298 19 740 U1 sowie die DE 200 19 720 U1 verwiesen. All diesen Federspannern ist ein Stellglied gemeinsam, durch dessen Betätigung zwei mit dem Stellglied in Wirkverbindung stehende Stützelemente relativ zueinander bewegbar sind. Dabei sind Stellglieder vorgesehen, welche sich teleskopartig verkürzen, so dass jedes der Stützelemente jeweils in einem der Endbereiche des Stellgliedes feststehend angeordnet ist. In anderen Konstruktionen bildet das Stellglied ein Führungsrohr, an dessen einem Ende über unterschiedliche Montageelemente eines der Stützelemente feststehend angeordnet ist. Die beiden Stützelemente können in unterschiedlicher Art und Weise mit einem Teil des Federdämpferbeines feststehend in Eingriff gebracht werden, so dass bei einer Verringerung des Abstandes der beiden Stützelemente das Federdämpferbein verkürzt und somit die sich zwischen den beiden Federtellern befindliche Schraubenfeder gespannt wird.For repair purposes, be it to replace the shock absorber or the coil spring, so-called. Federspanner be used. This is exemplified in the DE 196 31 524 C1 . DE 296 22 463 U1 . DE 298 19 740 U1 as well as the DE 200 19 720 U1 directed. All these spring tensioners have an actuator in common, by the actuation of which two support members operatively connected to the actuator are movable relative to each other. In this case, actuators are provided which shorten telescopically, so that each of the support elements is arranged in each case fixed in one of the end regions of the actuator. In other constructions, the actuator forms a guide tube, at one end of which is fixedly arranged on different mounting elements of the support elements. The two support members can be fixedly engaged in a different manner with a part of the spring damper leg, so that shortens the spring damper leg with a reduction in the distance between the two support elements and thus the located between the two spring plates coil spring is tensioned.

Zum Spannen von unterschiedlichen Schraubenfedern und/oder Federdämpferbeinen unterschiedlicher Gestaltung ist es erforderlich, unterschiedlich ausgebildete Stützelemente vorzusehen.For clamping different coil springs and / or spring damper legs of different design, it is necessary to provide differently shaped support elements.

So ist es beispielsweise aus der DE 200 19 720 U1 bekannt, die Stützelemente jeweils in Form einer Greiferklaue auszubilden, welche direkt mit einer der Federwindungen der Schraubenfeder in Eingriff bringbar sind. Bei diesem Federspanner sind die beiden Stützelemente bzw. Greiferklauen jeweils zur Längsmittelachse des Stellgliedes aufeinander zugeneigt ausgebildet, so dass mittels dieses Federspanners, insbesondere gebogen in einem Kraftfahrzeug eingebaute Schraubenfedern spannbar sind. Dabei sind solche Schraubenfedern in der Regel nicht Bestandteil eines Federdämpferbeines. Jedoch sind solche Federspanner grundsätzlichen gleichartig aufgebaut wie Federspanner, welche speziell für das Spannen von Schraubenfedern eines Federdämpferbeines eingesetzt werden.So it is for example from the DE 200 19 720 U1 known to form the support elements each in the form of a gripper claw, which are directly engageable with one of the spring coils of the coil spring into engagement. In this spring tensioner, the two support elements or gripper claws are each inclined towards each other to the longitudinal center axis of the actuator, so that means of this spring compressor, in particular bent in a motor vehicle built-in coil springs can be tensioned. In this case, such coil springs are not usually part of a spring damper leg. However, such spring tensioners are fundamentally similar built like spring tensioners, which are used especially for the tensioning of coil springs of a spring shock absorber leg.

Beim Gegenstand der DE 298 19 740 U1 ist eines der Stützelemente als Greiferklaue ausgebildet, welche mit der Federwindung einer in einem Federdämpferbein angeordneten Schraubenfeder in Eingriff bringbar ist. Das zweite Stützelement ist als eine Art Stützring ausgebildet und wird zum Spannen der Schraubenfeder auf den oberen Federteller des Federdämpferbeins aufgesetzt. Dabei kann die Auflagefläche dieses Stützringes an die Kontur, insbesondere der Steigung des Federtellers angepasst sein.At the subject of DE 298 19 740 U1 one of the support elements is designed as a gripper claw, which can be brought into engagement with the spring coil of a coil spring arranged in a spring strut. The second support member is formed as a kind of support ring and is placed on the upper spring plate of the spring damper strut for tensioning the coil spring. In this case, the bearing surface of this support ring can be adapted to the contour, in particular the pitch of the spring plate.

Beim Gegenstand der DE 296 22 463 U1 sind zwei gabelförmige Greiferelemente vorgesehen, welche mit den Federwindungen einer zu spannenden Schraubenfeder in Eingriff gebracht werden können. Die beiden Greiferklauen sind austauschbar am Führungsrohr des Stellgliedes angeordnet. Durch diese variable Austauschbarkeit können am Stellglied unterschiedlich ausgestaltete Stützelemente in Form von Greiferklauen oder Stützringen vorgesehen werden, um unterschiedlich dimensionierte und in ihrer Steigung unterschiedlich verlaufende Schraubenfedern eines Federdämpferbeines spannen zu können. Auch können unterschiedlich gestaltete Stützringe zur möglichst optimalen Anpassung an die vorgegebenen geometrischen Bedingungen an einem Federdämpferbein bzw. einem Federteller eingesetzt werden.At the subject of DE 296 22 463 U1 two fork-shaped gripper elements are provided, which can be brought into engagement with the spring coils of an exciting coil spring. The two gripper claws are arranged exchangeably on the guide tube of the actuator. As a result of this variable interchangeability, differently configured support elements in the form of gripper jaws or support rings can be provided on the actuator in order to be able to tension differently dimensioned coil springs of a spring shock absorber leg extending in different directions. It is also possible to use differently configured support rings for the best possible adaptation to the given geometric conditions on a spring damper strut or a spring plate.

Nachteilig an den oben beschriebenen Konstruktionen ist, dass zum Spannen von unterschiedlich gestalteten Federdämpferbeinen mehrere gegeneinander austauschbare Sätze von unterschiedlich ausgebildeten Stützelementen vorgesehen sein müssen.A disadvantage of the constructions described above is that a plurality of interchangeable sets of differently shaped support elements must be provided for clamping differently shaped spring damper legs.

Um eine gewisse Variabilität zu erreichen, ist aus der DE 41 39 936 A1 eine Art Federspanner bekannt, bei welchem als Stützelemente zwei Greiferelemente mit jeweils drei "Hakenkrallen" vorgesehen sind. Zwei der Hakenkrallen sind jeweils relativ zueinander verstellbar an einem V-förmigen Bügel angeordnet. Einer dieser Bügel ist an einem Ende eines Stellgliedes feststehend angeordnet, während der andere Bügel entlang eines Führungsrohres des Stellgliedes relativ zum ersten Bügel verstellbar geführt ist. Die jeweils dritte Hakenkralle ist am zugehörigen Bügel im Verbindungsbereich der Bügels zum Stellglied feststehend angeordnet. Die Hakenkrallen weisen bei dieser Vorrichtung eine etwa V-förmige Formgebung auf, so dass die Hakenkrallen insbesondere in radialer Richtung feststehend mit der aufgenommen Federwindung in Eingriff stehen. Da sich der Durchmesser einer Schraubenfeder beim Spannen und beim Entspannen ändert, führt dies zu erheblichen Belastungen der Greiferelemente. Des weiteren können mit diesen Greiferelementen ausschließlich Federwindungen aufgenommen werden, deren Durchmesser und/oder Steigung in einem bestimmten Bereich liegen.To achieve a certain variability is out of the DE 41 39 936 A1 a kind of spring compressor known in which two gripper elements are provided with three "hook claws" as support elements. Two of the hook claws are each arranged relative to each other adjustable on a V-shaped bracket. One of these brackets is fixedly disposed at one end of an actuator while the other bracket is adjustably guided along a guide tube of the actuator relative to the first bracket. The respective third hook claw is fixedly arranged on the associated bracket in the connecting region of the bracket to the actuator. The hook claws have in this device on an approximately V-shaped configuration, so that the hook claws are stationary in particular in the radial direction with the spring coil engaged. Since the diameter of a coil spring changes during tensioning and when relaxing, this leads to considerable loads on the gripper elements. Furthermore, with these gripper elements only spring coils can be taken, whose diameter and / or slope are within a certain range.

Aus der WO 01/17727 A1 ist ein stationärer Federspanner zum Spannen von Schraubenfedern eines Federdämpferbeines bekannt. Die Stützelemente weisen hier Halteelemente auf, die über schwenkbare Tragarme an einem Rahmengestell befestigt sind. Der Abstand der Halteelemente ist dabei quer zur Längsmittelachse der jeweiligen Schraubenfeder auf deren Durchmesser durch Schwenken der Tragarme einstellbar. Die Halteelemente sind hakenförmig ausgebildet und können in eine der Federwindungen der Schraubenfeder eingehängt werden. Da nur jeweils zwei Haltehaken vorgesehen sind, welche in sich diametral gegenüber liegenden Bereichen einer Federwindung anzusetzen sind und die jeweilige Federwindung nicht mehr anderweitig fixiert werden kann, besteht hier trotz einer gewissen Variabilität in der Anpassung an unterschiedlich dimensionierte Schraubenfedern die Gefahr des Abrutschens der Haltehaken.From the WO 01/17727 A1 is a stationary spring tensioner for tensioning coil springs of a spring damper leg known. The support elements have here holding elements which are fastened via pivotable support arms to a frame. The distance between the holding elements is adjustable transversely to the longitudinal center axis of the respective helical spring on the diameter thereof by pivoting the support arms. The holding elements are hook-shaped and can be hung in one of the spring coils of the coil spring. Since only two retaining hooks are provided, which are to be set in diametrically opposite areas of a spring coil and the respective spring coil can not be fixed otherwise, here despite a certain variability in the adaptation to different sized coil springs the risk of slipping of the retaining hooks.

In der US 5 172 462 A ist ein stationärer Federspanner beschrieben, dessen Stellglied als teleskopartig längeverstellbares Teleskoprohr ausgebildet ist. Im oberen Endbereich des Teleskoprohres ist ein Stützelement feststehend angeordnet. Dieses Stützelement bildet zwei schwenkbare Tragbügel, an deren freien Enden jeweils als Haltehaken ausgebildete Haltelemente angeordnet sind. Die Haltehaken sind in Längsschlitzen der Tragbügel längsverstellbar und drehbar aufgenommen. Das zweite Stützelement ist zur Aufnahme des Dämpferrohres des Federdämpferbeines als eine Art Rohrschelle ausgebildet und feststehend am Führungsrohr angeordnet. Eine Anpassung des oberen Stützelementes insbesondere an Schraubenfedern mit unterschiedlicher Steigung ist hier nicht möglich, da die beiden Tragbügel lediglich um eine parallel zur Längsmittelachse des Führungsrohres verlaufende Schwenkachse schwenkbar sind und somit die beiden Haltehaken in ihrer vertikalen Stellung nicht relativ zum Teleskoprohr einstellbar sind.In the US 5 172 462 A is a stationary spring compressor described, the actuator is designed as a telescopically adjustable length telescopic tube. In the upper end of the telescopic tube, a support member is fixedly arranged. This support element forms two pivotable mounting bracket, are arranged at the free ends of each formed as a retaining hook holding elements. The retaining hooks are longitudinally adjustable in longitudinal slots of the support bracket and rotatably received. The second support element is for receiving the Damper tube of the spring damper leg designed as a kind of pipe clamp and arranged stationary on the guide tube. An adaptation of the upper support member in particular to coil springs with different pitch is not possible here, since the two support brackets are pivotable only about a parallel to the longitudinal center axis of the guide tube pivot axis and thus the two retaining hooks are not adjustable relative to the telescopic tube in its vertical position.

Zu weiteren Ausgestaltungsmöglichkeiten von Federspannern wird ergänzend noch auf die US 5 507 470 A und die US 5 907 894 A verwiesen sowie auf die DE 10 2006 003 284 B3 hingewiesen.To further Ausgestaltungsmöglichkeiten of spring tensioners is additionally on the US 5 507 470 A and the US 5 907 894 A referenced as well as on the DE 10 2006 003 284 B3 pointed.

Beim Gegenstand der DE 10 2006 003 284 B3 geht es um einen Federspanner der gattungsgemäßen Art zum Spannen einer Schraubenfeder eines Federdämpferbeins, welcher aus einem Stellglied sowie zwei Stützelementen besteht, deren Abstand durch eine Betätigung des Stellgliedes veränderbar ist. Die Stützelemente können mit einem Teil des Federdämpferbeines oder der im Federdämpferbein zwischen einem unteren und einem oberen Federteller unter Vorspannung aufgenommenen Schraubenfeder feststehend in Verbindung gebracht werden. Um diesen Federspanner möglichst variabel für unterschiedlich dimensionierte Federdämpferbeine einsetzen zu können, weist eines der Stützelemente zwei Halteelemente auf, welche relativ zueinander verstellbar mit dem Stellglied in Verbindung stehen. Dabei sind die Halteelemente in ihrer Position und Ausrichtung an die Geometrie einer aufzunehmenden Federwindung oder eines aufzunehmenden Teils des Federdämpferbeines verstellbar. Die Haltelement können in ihrem Abstand voneinander und zum Stellglied frei eingestellt werden. Des Weiteren sind die Halteelement - in gewissen Grenzen - um eine Quer zum Federdämpferbein verlaufende Achse schwenkbar ausgebildet, so dass eine Anpassung an die Steigung einer aufzunehmenden Federwindung und/oder die Oberflächenkontur des oberen Federtellers ermöglicht wird. Zur Einstellung des Abstandes der Haltelemente voneinander sind die Haltelemente jeweils an einer Stellschiene gelagert, welche ihrerseits wiederum an zwei sich seitlich zum Stellglied erstreckenden Tragschienen verschiebbar aufgenommen sind. Die beiden Tragschienen sind einstückig miteinander verbunden und können aus einer horizontalen Ausgangslage relativ um eine rechtwinklig zum Stellglied verlaufenden Schwenkachse um einen vorbestimmten Schenkwinkel geschenkt werden. Die beiden Stellschienen sind über Stellnuten oder Durchbrüche an der jeweiligen Tragschiene gelagert und durch eine Art Selbsthemmung in der jeweils eingestellten Position gesichert. Diese Selbsthemmung wird durch auf den jeweiligen Endbereich der jeweiligen Stellschiene einwirkende Querkräfte bewirkt, wodurch eine Klemmwirkung zwischen dem jeweiligen Durchbruch und der zugehörigen Tragschiene entsteht. Der Abstand der Haltelemente zum Stellglied wird durch Verschieben des jeweiligen Haltelementes in einem Führungsschlitz der zugehörigen Stellschiene ermöglicht. Die Halteelemente sind über Gleitsteine im jeweiligen Führungsschlitz gesichert. Im Betrieb wird die jeweils eingestellte Relativstellung des jeweiligen Haltelementes zum Stellglied durch ein Verkanten der Haltelemente mit ihren Gleitsteinen an der Stellschiene bei einer Krafteinwirkung auf die Haltelemente bewirkt. Bezüglich der weiteren Ausgestaltung und Funktionsweise dieses Federspanners wird explizit auf die DE 10 2006 003 284 B3 verwiesen. Im Betrieb hat sich gezeigt, dass die Ausgestaltung dieses Federspanners in gewissen "Extremsituationen" mit einer gewissen Unsicherheit insbesondere bezüglich der selbsthemmenden Ausbildung seiner Bauelemente behaftet ist.At the subject of DE 10 2006 003 284 B3 It is about a spring compressor of the generic type for tensioning a coil spring of a Federdämpferbeins, which consists of an actuator and two support elements whose distance is variable by an actuation of the actuator. The support members may be fixedly connected to a part of the spring damper leg or the coil spring received under bias in the spring damper leg between a lower and an upper spring seat. In order to use this spring compressor as variable as possible for differently dimensioned spring damper legs, one of the support elements on two holding elements which are relative to each other adjustably connected to the actuator. The retaining elements are adjustable in their position and orientation to the geometry of a male spring coil or a male part of the spring damper leg. The holding element can be freely adjusted in their distance from each other and the actuator. Furthermore, the retaining element - within certain limits - designed to pivot about a transverse axis to the spring damper axis, so that an adaptation to the pitch of a male spring coil and / or the surface contour of the upper spring plate is made possible. To adjust the distance of the holding elements from each other, the holding elements are each mounted on a guide rail, which in turn turn to two are laterally slidably received laterally to the actuator extending support rails. The two support rails are integrally connected to each other and can be given from a horizontal starting position relative to a perpendicular to the actuator pivot axis extending by a predetermined Schenkwinkel. The two guide rails are mounted on parking grooves or openings on the respective support rail and secured by a kind of self-locking in the respective set position. This self-locking is effected by acting on the respective end region of the respective control rail transverse forces, whereby a clamping action between the respective opening and the associated mounting rail is formed. The distance between the holding elements to the actuator is made possible by moving the respective holding element in a guide slot of the associated control rail. The holding elements are secured via sliding blocks in the respective guide slot. In operation, the respectively set relative position of the respective holding element to the actuator is effected by tilting the holding elements with their sliding blocks on the adjusting rail at a force on the holding elements. With regard to the further embodiment and operation of this spring compressor is explicitly on the DE 10 2006 003 284 B3 directed. In operation, it has been shown that the design of this spring compressor in certain "extreme situations" with a certain uncertainty, in particular with respect to the self-locking design of its components is afflicted.

Der Erfindung liegt demgemäß die Aufgabe zugrunde einen Federspanner der gattungsgemäßen Art sicherer auszugestalten, wobei eine vorbestimmte Ausrichtung des oberen Federtellers relativ zum Federspanner ermöglicht werden soll.The invention is therefore the object of a spring compressor of the generic type safer to design, with a predetermined orientation of the upper spring plate is to be made possible relative to the spring tensioner.

Die Aufgabe wird erfindungsgemäß zusammen mit den Merkmalen des Oberbegriffes des Anspruchs 1 dadurch gelöst, dass zur axialen Abstützung der Haltelemente am oberen Federteller eine Druckplatte vorgesehen ist, welche mit den Halteelementen feststehend und/oder lösbar in Verbindung steht und, dass die Druckplatte mit dem oberen Federteller feststehend in Eingriff bringbar ist.The object is achieved according to the invention together with the features of the preamble of claim 1, characterized in that the axial support of the holding elements on the upper spring plate, a pressure plate is provided, which is stationary and / or releasably connected to the holding elements and that the pressure plate with the upper Spring plate is stationary brought into engagement.

Durch die erfindungsgemäße Ausgestaltung ist ein variabel einstellbarer Federspanner bei Bedarf in einfacher Weise stabilisierbar, indem die beiden Halteelemente über die vorgesehene Druckplatte gegeneinander fixiert werden. Damit wird sicher verhindert, dass sich deren Abstand und die Ausrichtung während des Spannvorganges verändern können, so dass die Sicherheit in der Anwendung erhöht wird. Da die Druckplatte mit dem oberen Federteller in Eingriff gebracht werden kann, wird auch ein Abrutschen oder eine Lageveränderung am Federteller sicher vermieden. Auch ist diese Druckplatte derart gestaltbar, dass eine in bestimmten Anwendungsfällen vorbestimmte Ausrichtung des oberen Federtellers relativ zum Federspanner eingestellt werden kann. Für unterschiedlich gestaltete Federteller können bei Bedarf auch unterschiedlich gestaltetet Druckplatten vorgesehen werden, ohne dass am Federspanner selbst Veränderungen vorgenommen werden müssen. D.h., dass der Federspanner, wie zur DE 10 2006 003 284 B3 beschrieben, in herkömmlicher Weise eingesetzt werden kann und für "Spezialfälle" durch Hinzufügung der Druckplatte einfach umrüstbar ist. Ein Austausch von mehreren Sätzen von formangepassten beispielsweise nach Art einer Greiferklaue ausgebildeten Halteelementen kann entfallen.The inventive design a variably adjustable spring tensioner can be stabilized in a simple manner if necessary by the two holding elements are fixed against each other on the intended pressure plate. This reliably prevents their spacing and alignment from changing during the tightening process, thereby increasing safety in the application. Since the pressure plate can be brought into engagement with the upper spring plate, slipping or a change in position on the spring plate is also reliably avoided. Also, this pressure plate can be designed such that a certain applications predetermined orientation of the upper spring plate can be adjusted relative to the spring tensioner. For differently designed spring plates and differently designed pressure plates can be provided if necessary, without the spring tensioner itself changes must be made. Ie that the spring compressor, how to DE 10 2006 003 284 B3 described, can be used in a conventional manner and is easily convertible for "special cases" by adding the pressure plate. An exchange of several sets of shape-adapted, for example, in the manner of a gripper claw formed holding elements can be omitted.

Gemäß Anspruch 2 kann vorgesehen sein, dass die Druckplatte einen zentralen Durchbruch aufweist und mit den Halteelementen jeweils über Schraubverbindungen lösbar in Verbindung steht. Durch diese Ausgestaltung ist der Federspanner beispielsweise nach der DE 10 2006 003 284 B3 nachrüstbar und bleibt jedoch für sein normales Anwendungsgebiet gleichermaßen in vorteilhafter Weise einsetzbar. Durch den vorgesehene zentralen Durchbruch ist die Druckplatte auch für obere Federteller einsetzbar, welche einen zentralen, nach oben vorstehenden, domartigen Vorsprung aufweisen. Der Durchbruch kann in seiner Dimensionierung den Abmessungen dies Vorsprunges angepasst sein, so dass die aufgesetzte Druckplatte den Vorsprung formschlüssig aufnimmt. Ein Abrutschen oder sonstige Lageveränderung zwischen Druckplatte und Federteller ist damit sicher ausgeschlossen.According to claim 2 it can be provided that the pressure plate has a central opening and is releasably connected to the holding elements in each case via screw connections. Due to this configuration, the spring compressor, for example, after DE 10 2006 003 284 B3 retrofitted and remains equally applicable for its normal field of application in an advantageous manner. The intended central breakthrough, the pressure plate can also be used for upper spring plate, which have a central, upwardly projecting, dome-like projection. The breakthrough can be adapted in dimensioning the dimensions of this projection, so that the patch pressure plate receives the projection in a form-fitting manner. Slipping or other change in position between the pressure plate and spring plate is thus safely excluded.

Weiter kann gemäß Anspruch 3 vorgesehen sein, dass der zentrale Durchbruch der Druckplatte kreisförmig ausgebildet ist und, dass ein Druckring vorgesehen ist, welcher in den Durchbruch der Druckplatte einsetzbar und im Durchbruch drehbar und feststellbar aufgenommen ist. Durch diese Ausgestaltung ist es möglich nur eine Druckplatte einzusetzen und eine Anpassung an die geometrischen Gegebenheiten eines Federtellers über den zusätzlichen Druckring vorzunehmen. Durch die drehbare Aufnahme des Druckringes in der Druckplatte ist auch eine Winkelausrichtung des Federtellers relativ zum Federspanner in einfacher Weise durchführbar. Mit einer solchen Winkelausrichtung des Federtellers zum Federspanner wird gleichzeitig auch einen Winkelausrichtung des Federtellers relativ zum "restlichen" Federdämpferbein bewirkt, so dass der Federteller - zumindest optisch - in einfacher Weise beispielsweise relativ zu einem im unteren Endbereich des Dämpferrohres eine Federdämpferbeins vorgesehenen, quer verlaufenden Lagerauge ausrichtbar ist.Further, it can be provided according to claim 3, that the central opening of the pressure plate is circular and that a pressure ring is provided which is inserted into the opening of the pressure plate and rotatably and detectably received in the breakthrough. By this configuration, it is possible to use only a pressure plate and make an adjustment to the geometric conditions of a spring plate on the additional pressure ring. Due to the rotatable receiving the pressure ring in the pressure plate and an angular orientation of the spring plate relative to the spring tensioner in a simple manner is feasible. With such an angular orientation of the spring plate to the spring tensioner also an angular orientation of the spring plate is effected relative to the "remaining" Federdämpferbein so that the spring plate - at least visually - in a simple manner, for example, relative to a provided in the lower end of the damper tube a Federdämpferbeins, transverse bearing eye is alignable.

Um den Druckring möglichst präzise in den Durchbruch der Druckplatte einsetzen zu können, kann der Druckring nach Anspruch 4 einen zumindest teilweise umlaufenden, zur Druckplatte hin vorstehenden Lagersteg aufweisen.In order to use the pressure ring as precisely as possible in the breakthrough of the pressure plate, the pressure ring according to claim 4 may have an at least partially encircling, to the pressure plate out projecting bearing web.

Weiter kann gemäß Anspruch 5 vorgesehen sein, dass die Druckplatte im Umgebungsbereich des Durchbruches eine Winkelskala aufweist und, dass der Druckring mit wenigstens einer Strichmarkierung versehen ist, welche durch Drehen des Druckringes im Durchbuch der Druckplatte auf die Winkelskala in unterschiedlichen Winkelstellungen zur Druckplatte ausrichtbar ist. Durch diese Ausgestaltung ist der Druckring in seiner Winkelausrichtung präzise auf die Druckplatte ausrichtbar.Further, it can be provided according to claim 5, that the pressure plate in the surrounding region of the breakthrough has an angular scale and that the pressure ring is provided with at least one bar marking, which can be aligned by rotating the pressure ring in Durchbuch the pressure plate on the angle scale in different angular positions to the printing plate. By this configuration, the pressure ring is precisely aligned in its angular orientation on the pressure plate.

Um den oberen Federteller in seiner Winkelausrichtung präzise relativ zum Federspanner ausrichten zu können, kann gemäß Anspruch 6 vorgesehen sein, dass der Druckring oder die Druckplatte oder sowohl die Druckplatte als auch der Druckring mit unterseitig offenen Aufnahmebohrungen versehen ist. Ist die Druckplatte selbst mit solchen Aufnahmebohrungen versehen, so kann der Federteller mit axial nach oben vorstehenden Gewindebolzen, über welche normalerweise die Montage an einer Kraftfahrzeugkarosserie erfolgt, mit der Duckplatte in einer vorbestimmten Winkelstellung in Eingriff gebracht werden. Durch die drehbare Aufnahme des Druckringes in der Druckplatte ist auch eine variable Winkelausrichtung des Federtellers zum Federspanner und somit zum "restlichen" Federdämpferbein in einfacher Weise möglich. Dabei können unterschiedliche Druckringe mit unterschiedlicher, an die Anordnung von Gewindebolzen unterschiedlicher Federteller angepasster Anordnung vorgesehen sein.In order to precisely align the upper spring plate in its angular orientation relative to the spring tensioner can be provided according to claim 6, that the pressure ring or the pressure plate or both the pressure plate and the pressure ring is provided with receiving holes open at the bottom. Is the printing plate itself with provided such receiving bores, so the spring plate with axially upwardly projecting threaded bolt, via which normally takes place the mounting on a motor vehicle body, are brought into engagement with the Duck plate in a predetermined angular position. Due to the rotatable mounting of the pressure ring in the pressure plate, a variable angular orientation of the spring plate to the spring tensioner and thus to the "remaining" spring damper leg is possible in a simple manner. In this case, different pressure rings can be provided with different, adapted to the arrangement of threaded bolts different spring plate arrangement.

Um die Druckplatte alleine an Federtellern ansetzen zu können, welche mit axial vorstehenden Gewindebolzen versehen sind, kann auch die Druckplatte mit solchen Aufnahmebohrungen in unterschiedlichen Anordnungen versehen sein. Sind die Aufnahmebohrungen des Druckringes als Durchgangsbohrungen ausgebildet, so können entsprechende Halteschrauben durch diese hindurch in Innengewinde des Federtellers eingeschraubt werden, welche normalerweise zu feststehenden Montage des Federtellers an einer Kraftfahrzeugkarosserie dienen.To attach the pressure plate alone to spring plates, which are provided with axially projecting threaded bolt, and the pressure plate can be provided with such mounting holes in different arrangements. If the receiving bores of the pressure ring are formed as through-holes, then corresponding retaining screws can be screwed through them into internal threads of the spring plate, which normally serve for fixed mounting of the spring plate on a motor vehicle body.

Für diese variable Winkelausrichtung und gleichzeitig zur Fixierung einer solchen Winkelausrichtung des Druckringes relativ zur Druckplatte kann gemäß Anspruch 7 vorgesehen sein, dass die Druckplatte im Umgebungsbereich des Durchbruches sich diametral gegenüberliegende, bogenförmig verlaufenden Langlöcher aufweist, über welche der Druckring relativ zur Druckplatte begrenzt drehbar über Montageschrauben an der Druckplatte festlegbar ist.For this variable angular orientation and at the same time for fixing such an angular orientation of the pressure ring relative to the pressure plate can be provided according to claim 7, that the pressure plate in the vicinity of the aperture diametrically opposed, arcuate slots has, over which the pressure ring limited relative to the pressure plate rotatably limited by mounting screws can be fixed to the pressure plate.

Es ist erkennbar dass durch die vorgesehene, die beiden Halteelemente verbindende Druckplatte eine Stabilisierung des Federspanners im Einsatz bei Bedarf durchführbar ist. Des Weiteren ist die Druckplatte derart gestaltbar, dass eine vorgegebene Winkelausrichtung des oberen Federtellers relativ zum Federspanner - zumindest optisch - und somit zum restlichen Federdämpferbein durchführbar ist. Durch den evtl. zusätzlich vorgesehenen Druckring kann der Federspanner einerseits in einfacher Weise an unterschiedlich gestaltete oberer Federteller angepasst werden und andererseits wird die Möglichkeit einer variablen Winkeleinstellung des oberen Federtellers zum Federspanner und damit zum restlichen Federdämpferbein geschaffen.It can be seen that a stabilization of the spring tensioner in use is feasible if required by the provided, the two holding elements connecting pressure plate. Furthermore, the pressure plate can be designed such that a predetermined angular orientation of the upper spring plate relative to the spring tensioner - at least visually - and thus to the remaining spring damper leg feasible is. Due to the possibly additionally provided pressure ring, the spring tensioner can be adapted on the one hand in a simple manner to differently shaped upper spring plate and on the other hand, the possibility of a variable angle adjustment of the upper spring plate to the spring tensioner and thus the remaining spring shock absorber leg is created.

Anhand der Zeichnung wird nachfolgend die Erfindung näher erläutert. Es zeigt:

Fig. 1
eine perspektivische Darstellung einer Druckplatte;
Fig. 2
eine perspektivische Darstellung eines mit der Druckplatte aus Fig. 1 koppelbaren Druckringes;
Fig. 3
eine perspektivische Darstellung des oberen Endbereich eines Federspanners mit einem zwei verstellbare Halteelemente aufweisenden Stützelement;
Fig. 4
die Darstellung des Federspanners aus Fig. 3 mit der die beiden Halteelemente verbindenden Druckplatte aus Fig. 1;
Fig. 5
die Darstellung aus Fig. 4 mit dem in die Druckplatte eingesetzten Druckring aus Fig. 2.
Reference to the drawing, the invention is explained in detail below. It shows:
Fig. 1
a perspective view of a printing plate;
Fig. 2
a perspective view of one with the pressure plate Fig. 1 Coupling pressure ring;
Fig. 3
a perspective view of the upper end portion of a spring tensioner with a two adjustable holding elements having support member;
Fig. 4
the representation of the spring tensioner Fig. 3 with the pressure plate connecting the two holding elements Fig. 1 ;
Fig. 5
the presentation Fig. 4 with the pressure ring inserted into the pressure plate Fig. 2 ,

Fig. 1 zeigt eine perspektivische Darstellung einer möglichen Ausführungsvariante einer Druckplatte 1, über welche zwei Haltelemente eines Federspanners feststehend miteinander verbindbar sind, wie später noch näher erläutert wird. Fig. 1 shows a perspective view of a possible embodiment of a pressure plate 1, via which two retaining elements of a spring compressor are fixedly connected to each other, as will be explained later.

Die Druckplatte 1 weist einen zentralen, bei der dargestellten Ausführungsvariante kreisrunden Durchbruch 2 auf. Die Außenkontur bildet ein unregelmäßiges Achteck, deren Dimensionierung in Querrichtung des Pfeils 3 größer ist als in Längsrichtung des Pfeils 4. Die in Querrichtung des Pfeils 3 liegenden Endbereiche der Druckplatte 1 bilden jeweils einen Montageabschnitt 5 bzw. 6, über welche die Druckplatte 1 jeweils mit einem Haltelement eines Federspanners feststehend in Verbindung bringbar ist. Zur lösbaren Verbindung mit dem entsprechenden Halteelement sind in jedem der Montageabschnitte 5, 6 jeweils zwei Innengewinde 7, 8 bzw. 9, 10 vorgesehen.The pressure plate 1 has a central, in the illustrated embodiment circular aperture 2. The outer contour forms an irregular octagon, the dimensioning in the transverse direction of the arrow 3 is greater than in the longitudinal direction of the arrow 4. The lying in the transverse direction of the arrow 3 end portions of the pressure plate 1 each form a mounting portion 5 and 6, via which the pressure plate 1 each with a retaining element of a spring compressor fixed in connection can be brought. To detachable Connection with the corresponding holding element are in each of the mounting portions 5, 6 respectively two internal threads 7, 8 and 9, 10 are provided.

Des Weiteren ist aus Fig. 1 erkennbar, dass im Umfangsbereich des Durchbruches 2 eine Winkelskala 11 oberseitig auf der Druckplatte 1 angeordnet ist. Diese Winkelskala 11 befindet sich beim dargestellten Ausführungsbeilspiel im Umfangsbereich des Durchbruches 2, welcher zur "hinteren" Querkante 12 gerichtet ist. Diese Winkelskala 11 kann zur Winkelausrichtung eines mit der Druckplatte direkt in Druckverbindung bringbaren Federtellers eines Federdämpferbeins (in der Zeichnung nicht dargestellt) dienen.Furthermore, it is off Fig. 1 recognizable that in the peripheral region of the opening 2, an angle scale 11 is arranged on the upper side of the printing plate 1. This angle scale 11 is located in the illustrated Ausführungsbeilspiel in the peripheral region of the opening 2, which is directed to the "rear" transverse edge 12. This angle scale 11 can serve for angular alignment of a spring plate of a spring damper leg (not shown in the drawing) that can be brought directly into pressure connection with the pressure plate.

Weiter ist aus Fig. 1 ersichtlich, dass im Bereich der beiden Montageabschnitte 5 und 6, im unmittelbaren Umfangsbereich des Durchbruches 2 bogenförmig verlaufende Länglöcher 13, 14 vorgesehen sind. Diese Langlöcher 13., 14 dienen zu wahlweisen und einstellbaren Montage eines Druckringes 20, welcher beispielhaft in Fig. 2 dargestellt ist.Next is out Fig. 1 can be seen that in the region of the two mounting portions 5 and 6, in the immediate peripheral region of the opening 2 arcuate elongated holes 13, 14 are provided. These slots 13, 14 are used to selectively and adjustable mounting a pressure ring 20, which exemplifies in Fig. 2 is shown.

Dieser Druckring 20 bildet unterseitig eine - im vorliegenden Fall kreisringförmige - Druckfläche 21, mit welcher der Druckring 20 auf einen entsprechend dimensionierten Federteller eines Federdämpferbeins (in der Zeichnung nicht dargestellt) aufsetzbar ist. Dieser Druckfläche 21 axial gegenüberliegend ist der Druckring 20 oberseitig mit einer umlaufenden Stützfläche 22 versehen, über welche sich der Druckring 20 im montierten Zustand unterseitig an der Druckplatte 1 aus Fig. 1 im Umgebungsbereich des Durchbruches 2 axial abstützt. Die ringförmige Stützfläche 22 ist vorliegend radial nach innen durch einen umlaufenden, axial in Richtung des Pfeils 23 vorstehenden Lagesteg 24 begrenzt, welcher passend in den kreisförmigen Durchbruch 2 der Druckplatte 1 aus Fig. 1 einsetzbar ist. Dieser Lagersteg kann in Umfangsrichtung auch unterteilt ausgebildet sein und einzelne Ringsegmente bilden. In Richtung des Pfeils 4 weist der Lagersteg 24 zwei sich diametral gegenüber liegende Strichmarkierungen 25, 26 auf, mit welchen der Druckring 20 im montierten Zustand wahlweise auf die Winkelskala 11 der Druckplatte 1 ausrichtbar ist.This pressure ring 20 forms on the underside a - in the present case annular - pressure surface 21, with which the pressure ring 20 on a correspondingly dimensioned spring plate of a Federdämpferbeins (not shown in the drawing) can be placed. This pressure surface 21 axially opposite the pressure ring 20 is provided on the upper side with a circumferential support surface 22, via which the pressure ring 20 in the assembled state on the underside of the pressure plate 1 from Fig. 1 axially supported in the vicinity of the opening 2. The annular support surface 22 is presently limited radially inwardly by a circumferential, axially projecting in the direction of the arrow 23 bearing web 24, which fits in the circular opening 2 of the pressure plate 1 from Fig. 1 can be used. This bearing bar can also be formed divided in the circumferential direction and form individual ring segments. In the direction of arrow 4, the bearing bar 24 has two diametrically opposite bar marks 25, 26, with which the Pressure ring 20 in the assembled state optionally on the angle scale 11 of the pressure plate 1 can be aligned.

Des Weiteren weist der Druckring 20 im Bereich seiner oberen Stützfläche 22 in Querrichtung des Pfeils 3 zwei sich diametral gegenüber liegende Montagegewinde 27, 28 auf, deren Anordnung - bei entsprechender Ausrichtung einer der beiden Strichmarkierungen 25 oder 26 auf die Winkelskala 11 der Druckplatte 1 - der Anordnung der beiden Langlöcher 13 und 14 entspricht. Ist beispielsweise die Strichmarkierung 25 mittig auf die Winkelskala 11 ausgerichtet, so befindet sich das Montagegewinde 27 etwa mittig im Bereich des Langloches 13 und das Montagegewinde 28 etwa mittig im Bereich des Langloches 14. Entsprechend der Umfangsausdehnung der Langlöcher 13 und 14 ist somit der Druckring 20 relativ zur Druckplatte 1 begrenzt drehbar.Furthermore, the pressure ring 20 in the region of its upper support surface 22 in the transverse direction of the arrow 3 has two diametrically opposite mounting threads 27, 28 whose arrangement - with a corresponding alignment of one of the two bar marks 25 or 26 on the angle scale 11 of the printing plate 1 - Arrangement of the two slots 13 and 14 corresponds. If, for example, the bar marking 25 is aligned centrally on the angle scale 11, then the mounting thread 27 is approximately centrally in the region of the elongated hole 13 and the mounting thread 28 approximately centrally in the region of the slot 14. According to the circumferential extent of the elongated holes 13 and 14, the pressure ring 20 is thus limited rotation relative to the pressure plate 1.

Unterseitig ist der Druckring 20 im Bereich seiner unteren Druckfläche 21 mit insgesamt vier Aufnahmebohrungen 29, 30 ,31, 32 versehen, welche im Einsatz zur Aufnahme von nach oben vorstehenden Gewindebolzen eines Federtellers (in der Zeichnung nicht dargestellt) dienen. Die Anordnung und die Anzahl dieser Aufnahmebohrungen 29, 30, 31, 32 ist der Anordnung von nach oben vorstehenden Gewindebolzen eines Federtellers angepasst. Über diese Aufnahmebohrungen ist der Druckring 20 in einer vorbestimmten Winkelstellung mit dem Federteller in Eingriff bringbar. Somit ist ein Federteller über den in die Druckplatte 1 aus Fig. 1 eingesetzten Druckring 20 über eine der Strichmarkierungen 25 oder 26 des Lagersteges 24 und die Winkelskala 11 der Druckplatte 1 in einfacher Weise in seiner Winkelstellung relativ zu einem Federspanner, an welchem die Druckplatte 1 zusammen mit dem Druckring 20 feststehend angeordnet ist ausrichtbar.On the underside of the pressure ring 20 is provided in the region of its lower pressure surface 21 with a total of four receiving holes 29, 30, 31, 32, which serve in use for receiving upwardly projecting threaded bolt of a spring plate (not shown in the drawing). The arrangement and the number of these receiving holes 29, 30, 31, 32 is adapted to the arrangement of upwardly projecting threaded bolt of a spring plate. About this mounting holes of the pressure ring 20 can be brought into engagement in a predetermined angular position with the spring plate. Thus, a spring plate on the in the pressure plate 1 is made Fig. 1 used pressure ring 20 via one of the stroke marks 25 or 26 of the bearing bar 24 and the angle scale 11 of the pressure plate 1 in a simple manner in its angular position relative to a spring tensioner on which the pressure plate 1 is arranged fixed together with the pressure ring 20 alignable.

Auch können für den alleinigen Einsatz der Druckplatte 1 (ohne Druckring 20) in der Druckplatte 1 solche Aufnahmebohrungen 15 vorgesehen sein, wie dies in Fig. 1 in gestrichelten Linien dargestellt ist. Sind diese Aufnahmebohrungen 15 als Durchgangsbohrungen ausgebildet, so kann die Druckplatte 1 auch feststehend mit einem Federteller in Eingriff gebracht werden, welcher anstatt axial vorstehender Gewindebolzen entsprechende Innengewinde aufweist, indem durch die Durchgangsbohrungen entsprechende Befestigungsschrauben hindurch geschraubt und in die Innengewinde eingeschraubt werden.Also, for the sole use of the pressure plate 1 (without pressure ring 20) in the pressure plate 1 such receiving holes 15 may be provided, as in Fig. 1 shown in dashed lines. Are these receiving holes 15 as through holes formed, the pressure plate 1 can also be fixedly brought into engagement with a spring plate, which has instead of axially projecting threaded bolt corresponding internal thread by corresponding fastening screws are screwed through the through holes and screwed into the internal thread.

Fig. 3 zeigt beispielhaft eine Ausführungsform des "oberen" Endbereichs eines Federspanners 40, mit welchem die Druckplatte 1 und der Druckring 20 aus den Fig. 1 und 2 einsetzbar sind. Diese Ausführungsvariante eines Federspanners 40 ist voll umfänglich in der DE 10 2006 003 284 B3 beschrieben, so dass zur weiteren Ausgestaltung, welche über die Darstellung der Fig. 3 hinausgeht, auf die DE 10 2006 003 284 B3 verwiesen wird. Fig. 3 shows an example of an embodiment of the "upper" end portion of a spring tensioner 40, with which the pressure plate 1 and the pressure ring 20 of the Fig. 1 and 2 can be used. This embodiment of a spring tensioner 40 is fully circumferential in the DE 10 2006 003 284 B3 described so that the further embodiment, which on the representation of the Fig. 3 goes out to the DE 10 2006 003 284 B3 is referenced.

Wie aus Fig. 3 ersichtlich ist, weist der Federspanner 40 ein Stellglied 41 mit einem Führungsrohr 42 auf. Das Führungsrohr 41 ist mit einem sich zumindest annähernd über dessen gesamte Länge erstreckenden Stellschlitz 43 versehen. Im oberen Endbereich weist das Führungsrohr 42 einen radial erweiterten, zylindrischen Aufnahmeabschnitt 44 auf, welcher zur drehbaren und axial feststehenden Aufnahme eines Antriebskopfes 45 dient. Dieser Antriebskopf 45 steht mit einer in Fig. 3 andeutungsweise erkennbaren Stellspindel 46 in drehfester Verbindung.How out Fig. 3 it can be seen, the spring tensioner 40 has an actuator 41 with a guide tube 42. The guide tube 41 is provided with an at least approximately over its entire length extending adjusting slot 43. In the upper end region, the guide tube 42 has a radially enlarged, cylindrical receiving portion 44, which serves for the rotatable and axially fixed receiving a drive head 45. This drive head 45 is connected to a in Fig. 3 suggestively recognizable adjusting spindle 46 in a rotationally fixed connection.

Auf das Führungsrohr 42 des Stellgliedes 41 ist ein Stützelement 47 in Richtung des Doppelpfeils 48 längsverschiebbar aufgesetzt. Zur längsverschiebbaren Lagerung des Stützelementes 47 auf dem Führungsrohr 42 weist das Stützelement 47 ein Lagerelement 49 auf, welches unverdrehbar mit einer innerhalb des Führungsrohres 42 angeordneten Stellmutter (in der Zeichnung nicht erkennbar) in Wirkverbindung steht. Bei Betätigung der Stellspindel 46 über den Antriebskopf 45 wird die Stellmutter innerhalb des Führungsrohres 42 in Richtung des Doppelpfeils 48 verstellt, wodurch eine entsprechende Stellbewegung des Lagerelementes 49 und somit des gesamten Stützelementes 47 entlang des Führungsrohes 42 bewirkt wird.On the guide tube 42 of the actuator 41, a support member 47 in the direction of the double arrow 48 is placed longitudinally displaceable. For longitudinally displaceable mounting of the support member 47 on the guide tube 42, the support member 47 has a bearing member 49 which is non-rotatably engaged with a disposed within the guide tube 42 adjusting nut (not visible in the drawing) in operative connection. Upon actuation of the adjusting spindle 46 via the drive head 45, the adjusting nut is adjusted within the guide tube 42 in the direction of the double arrow 48, whereby a corresponding adjusting movement of the bearing element 49 and thus the entire support member 47 along the guide tube 42 is effected.

Im Umfangsbereich des Stellschlitzes 46 weist das Lagerelement 49 außenseitig eine ebene Stützfläche 50 auf, in dessen Bereich ein Tragelement 51 um eine Schwenkachse 52 schwenkbar gelagert ist. Dieses Tragelement 51 bildet zwei seitlich vorstehende, zueinander fluchtende Tragschienen 53, 54, welche in der dargestellten "Mittelstellung" des Tragelementes 51 rechtwinklig zur Längsmittelachse 55 des Führungsrohres 42 verlaufen.In the peripheral region of the adjusting slot 46, the bearing element 49 on the outside on a flat support surface 50, in the region of a support member 51 is pivotally mounted about a pivot axis 52. This support member 51 forms two laterally projecting, mutually aligned support rails 53, 54 which extend in the illustrated "middle position" of the support member 51 perpendicular to the longitudinal central axis 55 of the guide tube 42.

An jeder Tragschiene 53, 54 ist jeweils eine Stellschiene 56 bzw. 57 in Richtung des Doppelpfeils 3 längverschiebbar gelagert. Jede der Stellschienen 56, 57 ist mit einem Führungsschlitz 58 bzw. 59 versehen, welche jeweils zur Aufnahme eines Haltelementes 60 bzw. 61 dienen. Die beiden Haleelemente 60, 61 sind in den Führungsschlitzen 58, 59 in Richtung des Doppelpfeils 4 verstellbar gelagert, wobei die beiden Halteelemente 60 und 61 mit dem jeweils abgesetzt ausgebildeten Führungsschlitz 58 bzw. 59 in Eingriff stehen und in dieser Eingriffsposition durch jeweils einen Gleitsteine 62 und 63 gesichert sind. Die Lagerung der beiden Halteelement 60, 61 an der jeweiligen Stellschiene 56 bzw. 57 ist derart ausgestaltet, dass die Haltelemente 60, 61 unabhängig von einander jeweils um eine Drehachse 64 bzw. 65 in Richtung des Doppelpfeils 66 bzw. 67 begrenzt drehbar sind.On each support rail 53, 54 each have a control rail 56 and 57 longitudinally displaceable in the direction of the double arrow 3. Each of the adjusting rails 56, 57 is provided with a guide slot 58 or 59, which respectively serve to receive a holding element 60 or 61. The two Haleelemente 60, 61 are adjustably mounted in the guide slots 58, 59 in the direction of the double arrow 4, wherein the two holding elements 60 and 61 with the respective stepped trained guide slot 58 and 59 are engaged and in this engaged position by a respective sliding blocks 62nd and 63 are secured. The mounting of the two holding elements 60, 61 on the respective adjusting rail 56 or 57 is configured such that the holding elements 60, 61 are each limited to rotate about a rotational axis 64 and 65 in the direction of the double arrow 66 and 67, respectively.

Durch diese drehbare Anordnung der Halteelemente 60 und 61 sind diese an entsprechend unterschiedliche Steigungen einer aufzunehmenden Federwindung, eines aufzunehmenden Federtellers oder eines Drehlagerkopfes eines Federdämpferbeines in einfacher Weise anpassbar. Durch die weitere Verstellbarkeit der Haltelemente 60 und 61 in Richtung des Doppelpfeils 4 sowie der beiden Stellschienen 56 und 57 in Richtung des Doppelpfeils 3 ist das Stützelement 47 variabel auch an die Dimension eines Federdämpferbeins anpassbar. Die verschiebbaren Lagerungen der Stellschienen 56, 57 an den beiden Tragschienen 53, 54 einerseits und der Haltelemente 60, 61 an den Stellschienen 56, 57 andererseits sind selbsthemmend ausgebildet, wie dies zur DE 10 2006 003 284 B3 beschrieben ist. Im Betrieb hat sich gezeigt, dass die Ausgestaltung eines solchen Federspanners 40 mit seinem Stützelement 47 in gewissen "Extremsituationen" mit einer gewissen Unsicherheit insbesondere bezüglich dieser selbsthemmenden Ausbildung seiner Bauelemente behaftet ist.By this rotatable arrangement of the holding elements 60 and 61, these are adapted to suitably different slopes of a male spring coil, a male spring plate or a rotary bearing head of a spring damper leg in a simple manner. Due to the further adjustability of the holding elements 60 and 61 in the direction of the double arrow 4 and the two adjusting rails 56 and 57 in the direction of the double arrow 3, the support member 47 is variably adaptable to the dimension of a Federdämpferbeins. The sliding bearings of the adjusting rails 56, 57 on the two support rails 53, 54 on the one hand and the holding elements 60, 61 on the adjusting rails 56, 57 on the other hand are self-locking, as to DE 10 2006 003 284 B3 is described. In operation, it has been shown that the design of such a spring compressor 40 with its support member 47 in certain "extreme situations" with a certain uncertainty, in particular with respect to this self-locking design of its components is afflicted.

Zur Erhöhung der Arbeitssicherheit ist deshalb die Druckplatte 1 aus Fig. 1 vorgesehen, welche mit den beiden Haltelementen 60 und 61 feststehend koppelbar ist. Hierzu sind die beiden Haltelemente 60 und 61 jeweils mit zwei Durchgangsbohrungen 68 bzw. 69 versehen, über welche die Druckplatte 1 mit den Haltelementen 60 und 61 verschraubbar ist.To increase safety at work, therefore, the pressure plate 1 is made Fig. 1 provided, which is fixedly coupled to the two holding elements 60 and 61. For this purpose, the two holding elements 60 and 61 are each provided with two through holes 68 and 69, via which the pressure plate 1 with the holding elements 60 and 61 can be screwed.

Einen solchen montierten Zustand zeigt Fig. 4. Es ist erkennbar, dass die Druckplatte 1 unterseitig an beiden Haltelementen 60 und 61 über entsprechende Montageschrauben 70 bzw. 71 feststehend und lösbar montiert ist. Durch diese Kopplung der beiden Haltelemente 60 und 61 sind diese gegeneinander fixiert, so dass insbesondere eine ungewollte Verstellung in Richtung des Doppelpfeils 3 ausgeschlossen ist und somit insbesondere ein Abrutschen von einem oberen Federteller sicher ausgeschlossen ist.Such a mounted state shows Fig. 4 , It can be seen that the pressure plate 1 is fixedly and detachably mounted on the underside on both holding elements 60 and 61 via corresponding mounting screws 70 and 71, respectively. By this coupling of the two holding elements 60 and 61, these are fixed against each other, so that in particular an unintentional adjustment in the direction of the double arrow 3 is excluded and thus in particular slipping is reliably excluded from an upper spring plate.

Der zentrale Durchbruch 2 kann dabei zu Aufnahme eines nach oben, axial vorstehenden Doms eines Federtellers dienen. Ist ein solcher Federteller mit nach oben vorstehenden Gewindebolzen versehen, so können diese in den Durchgangsbohrungen 15 der Druckplatte 1 aufgenommen werden, so dass die Druckplatte 1 und somit der gesamte Federspanner 40 im am Federteller des Federdämpferbeines angesetzten Zustand sicher festgelegt ist. Zum Ansetzen an Federdämpferbeinen mit unterschiedlich gestalteten Federtellern können unterschiedlich dimensionierte Druckplatten 1 vorgesehen sein, welche gegeneinander austauschbar mit den beiden Haltelementen 60 und 61 gekoppelt werden können.The central opening 2 can serve to receive an upwardly, axially projecting dome of a spring plate. If such a spring plate provided with upwardly projecting threaded bolts, they can be received in the through holes 15 of the pressure plate 1, so that the pressure plate 1 and thus the entire spring compressor 40 is set securely in the state attached to the spring plate of the spring damper leg state. To attach to spring damper legs with differently shaped spring plates different sized pressure plates 1 may be provided, which can be coupled to each other interchangeable with the two holding elements 60 and 61.

Alternativ oder ergänzend dazu kann auch der Druckring 20 aus Fig. 2 eingesetzt werden. Hierzu zeigt Fig. 5 eine perspektivische Darstellung des Federspanners 40 mit der montierten Druckplatte 1 und dem darin eingesetzten Druckring 20. Es ist erkennbar, dass der Druckring 20 mit seinem Lagersteg 24 passend in den kreisrunden Durchbruch 2 der Druckplatte 1 eingesetzt ist. Der Druckring 20 ist mittels zweier Schrauben 73 und 74 feststehend mit der Druckplatte 1 verbunden. Bei gelösten Schrauben 73, 74 ist der Druckring 20 relativ zur Druckplatte 1 in Richtung des Doppelpfeils 72 drehbar.Alternatively or additionally, the pressure ring 20 can also be made Fig. 2 be used. This shows Fig. 5 a perspective view of the spring tensioner 40 with the mounted pressure plate 1 and the pressure ring 20 inserted therein. It can be seen that the pressure ring 20 with its bearing bar 24 fits in the circular Breakthrough 2 of the printing plate 1 is inserted. The pressure ring 20 is connected by means of two screws 73 and 74 fixed to the pressure plate 1. When the screws 73, 74 are released, the pressure ring 20 is rotatable relative to the pressure plate 1 in the direction of the double arrow 72.

In der in Fig. 5 dargestellten "Mittelstellung" ist der Druckring 20 mit der Strichmarkierung 25 seines Lagersteges 24 mittig auf die Winkelskala 11 der Druckplatte 1 ausgerichtet. Die zweite Strichmarkierung 26 ist der ersten Strichmarkierung 25 diametral gegenüber liegend angeordnet, so dass der Druckring 20 auch in einer um 180° gedrehten Lage in die Druckplatte 1 einsetzbar ist. Dies erleichtert das Zusammenfügen, da der Monteur nicht zwingend die Lage einer Strichmarkierung 25 oder 26 beachten muss.In the in Fig. 5 shown "center position" of the pressure ring 20 is aligned with the bar marking 25 of its bearing bar 24 centrally on the angle scale 11 of the printing plate 1. The second bar marking 26 is arranged diametrically opposite the first bar marking 25, so that the pressure ring 20 can also be inserted into the printing plate 1 in a position rotated by 180 °. This facilitates the assembly, since the fitter does not necessarily have to pay attention to the position of a bar mark 25 or 26.

Steht ein Federteller mit vier Gewindebolzen (in der Zeichnung nicht dargestellt) mit den aus Fig. 2 erkennbaren Aufnahmebohrungen 29, 30, 31 und 32 in Eingriff, so ist dessen relative Winkelstellung durch ablesen der Relativposition der Strichmarkierung 25 zur Winkelskala 11 in einfacher Weise bestimmbar. So kann die Winkelstellung des Druckringes 20 zusammen mit einem aufgenommenen Federteller präzise relativ zur Druckplatte 1 und somit relativ zum Federspanner 40 auf einen vorbestimmten Wert eingestellt werden. Weist der Federspanner in seinem in der Zeichnung nicht dargestellten unteren Endbereich beispielsweise eine Aufnahmevorrichtung zur Aufnahme eines quer verlaufenden Lagerauges des Federdämpferbeins auf, so ist der obere Federteller in einfacher Weise in eine vorbestimmte relative Winkelstellung zu diesem Lagerauge bringbar, in welcher er beim Entspannen des Federdämpferbeins verbleibt.Is a spring plate with four threaded bolts (not shown in the drawing) with the off Fig. 2 recognizable mounting holes 29, 30, 31 and 32 in engagement, so its relative angular position can be determined by reading the relative position of the stroke marker 25 to the angle scale 11 in a simple manner. Thus, the angular position of the pressure ring 20 can be precisely adjusted relative to the pressure plate 1 and thus relative to the spring tensioner 40 to a predetermined value together with a recorded spring plate. Does the spring tensioner in his lower end, not shown in the drawing, for example, a receiving device for receiving a transverse Lagerauges the spring damper strut, the upper spring plate is easily brought into a predetermined relative angular position to this bearing eye, in which he relaxes the spring damper strut remains.

Ein weiterer Vorteil des Einsatzes eines "zusätzlichen" Druckringes 20 besteht darin, dass dieser, wie aus Fig. 5 erkennbar ist, einen im Durchmesser kleineren Durchbruch 33 aufweist und somit eine Anpassung an Federteller unterschiedlicher Dimensionierungen erleichtert wird. Insbesondere ist lediglich eine Druckplatte 1 notwendig und ein Wechsel von einem zu spannenden Federdämpferbein zu einen unterschiedlich dimensionierten Federdämpferbein möglich ist, ohne die Druckplatte 1 austauschen zu müssen. Zum Spannen und Entspannen von Federdämpferbeinen mit unterschiedlich dimensionierten Federtellern und/oder unterschiedlich angeordneten Gewindebolzen sind somit lediglich verschiedene Druckringe 20 vorzusehen, um einen variablen und sicheren Einsatz eines Federspanners 40 sicherzustellen.Another advantage of using an "additional" pressure ring 20 is that this, as out Fig. 5 can be seen, a smaller diameter breakthrough 33 and thus an adaptation to spring plate of different dimensions is facilitated. In particular, only one printing plate 1 necessary and a change from a too exciting spring shock absorber leg to a different sized spring damper leg is possible without having to replace the pressure plate 1. For tensioning and relaxing Federdämpferbeinen with different sized spring plates and / or differently arranged threaded bolt thus only different pressure rings 20 are provided to ensure a variable and safe use of a spring compressor 40.

Claims (7)

Federspanner (40) zum Spannen einer zwischen einem unteren und einem oberen Federteller unter Vorspannung aufgenommenen Schraubenfeder eines Federdämpferbeines bestehend aus einem Stellglied (41) sowie zwei Stützelementen (47), deren Abstand zum Spannen der Schraubenfeder bzw. des Federdämpfereins durch die Betätigung des Stellgliedes (41) veränderbar ist, wobei eines der Stützelemente (47) zwei mit dem oberen Federteller des Federdämpferbeines und/oder einer Federwindung der Schraubenfeder in Eingriff bringbare Halteelemente (60, 61) aufweist, welche relativ zueinander verstellbar mit dem Stellglied (41) in Verbindung stehen,
dadurch gekennzeichnet,
dass zur axialen Abstützung der Haltelemente (60, 61) am oberen Federteller eine Druckplatte (1) vorgesehen ist, welche mit den Halteelementen (60, 61) feststehend und/oder lösbar in Verbindung steht und,
dass die Druckplatte (1) mit dem oberen Federteller feststehend in Eingriff bringbar ist.Spring tensioner (40) for tensioning a helical spring of a spring shock absorber leg received under pretension between a lower and an upper spring plate, consisting of an actuator (41) and two support elements (47) whose spacing for tensioning the helical spring or the spring damper by the actuation of the actuator (47). 41) is variable, wherein one of the support elements (47) has two with the upper spring plate of the spring damper strut and / or a spring coil of the coil spring engageable holding elements (60, 61) which are relative to each other adjustably connected to the actuator (41) .
characterized,
in that for the axial support of the holding elements (60, 61) a pressure plate (1) is provided on the upper spring plate, which plate is fixed and / or detachably connected to the holding elements (60, 61) and
in that the pressure plate (1) can be fixedly engaged with the upper spring plate. Federspanner nach Anspruch 1, dadurch gekennzeichnet, dass die Druckplatte (1) einen zentralen Durchbruch (2) aufweist und mit den Halteelementen (60, 61) jeweils über Schraubverbindungen (70, 71) lösbar in Verbindung steht.Spring compressor according to claim 1, characterized in that the pressure plate (1) has a central opening (2) and releasably connected to the holding elements (60, 61) in each case via screw connections (70, 71). Federspanner nach Anspruch 2, dadurch gekennzeichnet, dass der zentrale Durchbruch (2) der Druckplatte (1) kreisförmig ausgebildet ist und,
dass ein Druckring (20) vorgesehen ist, welcher in den Durchbruch (2) der Druckplatte (1) einsetzbar und im Durchbruch (2) drehbar und feststellbar aufgenommen ist.Spring compressor according to claim 2, characterized in that the central opening (2) of the pressure plate (1) is circular and,
a pressure ring (20) is provided which can be inserted into the aperture (2) of the pressure plate (1) and is received rotatably and lockably in the opening (2). Federspanner nach Anspruch 3, dadurch gekennzeichnet, dass der Druckring (20) einen in den Durchbruch (2) passend einsetzbaren, zumindest teilweise umlaufenden, zur Druckplatte (1) hin vorstehenden Lagersteg (24) aufweist.Spring compressor according to claim 3, characterized in that the pressure ring (20) in the opening (2) suitably usable, at least partially encircling, to the pressure plate (1) projecting towards the projecting web (24). Federspanner nach Anspruch 4, dadurch gekennzeichnet, dass die Druckplatte (1) im Umgebungsbereich des Durchbruches (2) eine Winkelskala (11) aufweist und,
dass der Druckring (20) mit wenigstens einer Strichmarkierung (25, 26) versehen ist, welche durch Drehen des Druckringes (20) im Durchbuch (2) der Druckplatte (1) auf die Winkelskala (11) in unterschiedlichen Winkelstellungen zur Druckplatte (1) ausrichtbar ist.Spring compressor according to claim 4, characterized in that the pressure plate (1) in the surrounding region of the opening (2) has an angle scale (11) and,
in that the pressure ring (20) is provided with at least one line marking (25, 26) which is produced by turning the pressure ring (20) in the passbook (2) of the pressure plate (1) on the angle scale (11) in different angular positions to the pressure plate (1). is alignable. Federspanner nach Anspruch 3, 4 oder 5, dadurch gekennzeichnet, dass der Druckring (20) oder die Druckplatte (1) oder sowohl die Druckplatte (1) als auch der Druckring (20) mit unterseitig offenen Aufnahmebohrungen (15, 29, 30, 31, 32) versehen ist.Spring compressor according to claim 3, 4 or 5, characterized in that the pressure ring (20) or the pressure plate (1) or both the pressure plate (1) and the pressure ring (20) with receiving bores open at the bottom (15, 29, 30, 31 , 32). Federspanner nach einem der Ansprüche 3 bis 6, dadurch gekennzeichnet, dass die Druckplatte (1) im Umgebungsbereich des Durchbruches (2) sich diametral gegenüberliegende, bogenförmig verlaufende Langlöcher (13, 14) aufweist, über welche der Druckring (20) relativ zur Druckplatte (1) begrenzt drehbar über Schrauben (73, 74) an der Druckplatte (1) festlegbar ist.Spring compressor according to one of claims 3 to 6, characterized in that the pressure plate (1) in the surrounding region of the opening (2) diametrically opposed, arcuate slots (13, 14), via which the pressure ring (20) relative to the pressure plate ( 1) limited by screws (73, 74) on the pressure plate (1) can be fixed.
EP13002658.6A 2012-06-06 2013-05-22 spring compressor Active EP2671683B8 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202012005626U DE202012005626U1 (en) 2012-06-06 2012-06-06 Pressure plate for spring tensioner

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EP2671683A1 true EP2671683A1 (en) 2013-12-11
EP2671683B1 EP2671683B1 (en) 2017-10-11
EP2671683B8 EP2671683B8 (en) 2018-01-17

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4035835A1 (en) 2021-01-28 2022-08-03 Govoni S.r.l. Anchoring device for spring-damper assemblies for machines for mounting/removing vehicle suspensions

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017100581A1 (en) 2017-01-13 2018-07-19 Andreas Heiko Gruner Clamping device for tensioning a coil spring
IT201900006935A1 (en) * 2019-05-17 2020-11-17 Govoni S R L SUPPORT DEVICE FOR SPRING-SHOCK ABSORBER ASSEMBLIES FOR MACHINES FOR ASSEMBLY / DISASSEMBLY OF VEHICLE SUSPENSION

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DE4139936A1 (en) 1990-12-12 1992-06-17 Gerhard Boueke Frame for compressing motor vehicle coil springs - has spring hooked between two ribs which can be screwed together on telescopic spine
US5172462A (en) 1991-07-16 1992-12-22 Ha Tae Hong Spring compression device
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DE29622463U1 (en) 1996-12-27 1997-03-06 Klann Tools Ltd., Oxfordshire Console spring tensioner with variable clamping range
DE19631524C1 (en) 1996-08-03 1997-11-27 Angelika Weishaar Spring clamp, especially for vehicle helical springs
US5907894A (en) 1997-04-17 1999-06-01 Ha; Tae-Hong Spring compression device for shock absorber of motor car
DE29819740U1 (en) 1998-11-05 1999-06-10 Klann Tools Ltd., Didcot, Oxfordshire Spring tensioner for coil springs with at least one spring plate
FR2790986A1 (en) * 1999-03-19 2000-09-22 Michelin & Cie METHOD AND DEVICE FOR PRECISE MOUNTING OF A MAC PHERSON SUSPENSION FORCE LEG
DE20019720U1 (en) 2000-11-21 2001-01-25 Klann Tools Ltd., Didcot, Oxfordshire Spring tensioner for tensioning unstable or bent pre-tensioned coil springs
WO2001017727A1 (en) 1999-09-08 2001-03-15 Semad S.R.L. Unipersonale A device for the dismantling and reassembly of vehicle-suspension spring/shock-absorber units
DE102006003284B3 (en) 2006-01-23 2007-07-05 Klann-Spezial-Werkzeugbau-Gmbh Tensioning device for coil spring of spring strut has one support element with two holding elements are adjustable relative to each other by setting member
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Publication number Priority date Publication date Assignee Title
DE4139936A1 (en) 1990-12-12 1992-06-17 Gerhard Boueke Frame for compressing motor vehicle coil springs - has spring hooked between two ribs which can be screwed together on telescopic spine
US5172462A (en) 1991-07-16 1992-12-22 Ha Tae Hong Spring compression device
US5507470A (en) 1994-12-21 1996-04-16 Amstutz; Peter Spring compressor
DE19631524C1 (en) 1996-08-03 1997-11-27 Angelika Weishaar Spring clamp, especially for vehicle helical springs
DE29622463U1 (en) 1996-12-27 1997-03-06 Klann Tools Ltd., Oxfordshire Console spring tensioner with variable clamping range
US5907894A (en) 1997-04-17 1999-06-01 Ha; Tae-Hong Spring compression device for shock absorber of motor car
DE29819740U1 (en) 1998-11-05 1999-06-10 Klann Tools Ltd., Didcot, Oxfordshire Spring tensioner for coil springs with at least one spring plate
FR2790986A1 (en) * 1999-03-19 2000-09-22 Michelin & Cie METHOD AND DEVICE FOR PRECISE MOUNTING OF A MAC PHERSON SUSPENSION FORCE LEG
WO2001017727A1 (en) 1999-09-08 2001-03-15 Semad S.R.L. Unipersonale A device for the dismantling and reassembly of vehicle-suspension spring/shock-absorber units
DE20019720U1 (en) 2000-11-21 2001-01-25 Klann Tools Ltd., Didcot, Oxfordshire Spring tensioner for tensioning unstable or bent pre-tensioned coil springs
DE102006003284B3 (en) 2006-01-23 2007-07-05 Klann-Spezial-Werkzeugbau-Gmbh Tensioning device for coil spring of spring strut has one support element with two holding elements are adjustable relative to each other by setting member
US20090013514A1 (en) * 2007-07-11 2009-01-15 Ismet Uzun Strut spring compression apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4035835A1 (en) 2021-01-28 2022-08-03 Govoni S.r.l. Anchoring device for spring-damper assemblies for machines for mounting/removing vehicle suspensions

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EP2671683B1 (en) 2017-10-11
EP2671683B8 (en) 2018-01-17
DE202012005626U1 (en) 2012-06-29

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