EP2163349B1 - Device for tensioning a shock absorber - Google Patents
Device for tensioning a shock absorber Download PDFInfo
- Publication number
- EP2163349B1 EP2163349B1 EP20090009768 EP09009768A EP2163349B1 EP 2163349 B1 EP2163349 B1 EP 2163349B1 EP 20090009768 EP20090009768 EP 20090009768 EP 09009768 A EP09009768 A EP 09009768A EP 2163349 B1 EP2163349 B1 EP 2163349B1
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- EP
- European Patent Office
- Prior art keywords
- spring
- piston rod
- engagement
- gripper
- collar
- 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.)
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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 device for tensioning a spring damper strut having at least one gripper element, which engages during tensioning with a spring coil of a spring in the strut between an upper and a lower spring plate under bias coil spring engaged and with a coupling element, which with one of the first spring coil axially spaced part or with the lower spring plate of the spring damper strut is engaged, wherein for tensioning the coil spring, the axial distance between the gripper element and the coupling element is variable and, wherein the spring damper strut has a piston rod which is provided with a radially projecting part.
- Spring damper legs are known from the prior art, in particular from the automotive industry, for a long time.
- Such a spring damper leg has a coil spring which is accommodated under tension between an "upper” and a “lower” spring plate of the spring damper leg.
- the lower spring plate is fixed to a so-called damper tube, which is in operation is mounted on a axle component to be mitigated.
- This damper tube serves to receive a so-called.
- Shock absorber which in turn is provided with a piston rod which protrudes vertically upwards from the damper tube.
- a mounting thread is provided, via which the piston rod with the upper spring plate is fixed coupled.
- the maximum distance between the lower spring plate and the upper spring plate is thus determined in the assembled state by the length of the protruding from the damper rod piston rod.
- this piston rod below the upper spring plate has a radially projecting part, which is formed plate-like in the rule.
- the piston rod itself may have a radially expanded shoulder, which is also arranged at an axial distance from the upper spring plate.
- the piston rod in modern axle construction in the region of the upper spring plate, a radially projecting part, in particular in the form of a plate, which serves to attach a protective cover for the piston rod.
- shock absorbers In newer vehicle designs and in particular in so-called sports suspensions, what are known as gas shock absorbers are used as shock absorbers, which are characterized in that the piston rod is acted upon by an axial force pressing against the upper spring plate. This means that the piston rod always remains in its "extended” state due to this axial force.
- Different spring tensioners are used for tensioning coil springs. For that be exemplary on the DE 196 31 524 C1 or even the DE 93 14 698 U1 referenced, in which two different basic designs of spring tensioners are described.
- Konsolfederspanner which has an externally to be arranged outside of the exciting coil spring tensioning device, which in turn is provided for tensioning the coil spring with two gripper elements.
- the first (upper) gripper element is brought into engagement with a spring coil in the vicinity of the upper spring plate, this gripper element is designed approximately claw-shaped or fork-shaped.
- the lower gripper element may be identical and be suspended in a lower spring coil. It is also known to design the lower gripper element as a kind of coupling element, so that this can be brought into engagement, for example, with the lower spring plate.
- the coil spring is clamped during the clamping operation against the lower spring plate.
- conventional spring damper legs which have a conventional shock absorber and no gas pressure shock absorber, thus the total length of the spring damper strut can be shortened by this clamping operation, so that this spring strut can be easily removed from a motor vehicle.
- the spring compressor is after the DE 93 14 698 U1 can be used, this having a different basic structure.
- two tension spindles are used for tensioning the coil spring, which have hook-shaped gripper elements in their upper end region, which are attached to the coil spring diametrically opposite one another in a spring coil arranged in the region of the upper spring plate.
- the lower gripper elements or coupling elements hook-shaped and are also suspended in a spring coil.
- the DE 29903826 U1 shows a device according to the preamble of claim 1.
- the invention has the object zsulgrounde to design a device for tensioning a spring damper strut with gas spring such that even such a spring damper strut for removal from a motor vehicle can be shortened.
- an additional, adjustable retaining element is provided in the region of the gripper element, which consists of a neutral, not with the part of the piston rod engaged position in an effective, with Part of the piston rod engageable position is adjustable and that the distance between the additional, with the part of the piston rod engaged holding member and the coupling element during the clamping process can be shortened.
- a device for tensioning a spring damper leg is provided, with which a spring damper strut is shortened as a whole, which has a gas spring as a shock absorber.
- an additional retaining element is provided in the region of the gripper element.
- This additional holding element is adjustable from a neutral, not with the radially projecting part of the piston rod engaged position in an operative, with the radially projecting part of the piston rod engaged position. That is, such a device in conventional manner, as is generally known from the prior art for spring compressor, on a coil spring or on a spring damper leg is attachable. After attaching, in particular, the upper, in the region of the upper spring plate attached gripper element, the holding element can now be adjusted "into the spring” and thus be brought into engagement with the radially projecting part of the piston rod.
- the distance of the gripper element is shortened to the lower spring plate, so that the coil spring is tensioned. Since the piston rod is engaged via the radially projecting part with the additional retaining element, the piston rod is also pressed into the shock absorber at the same time. This ensures that the spring damper overall shortened during the clamping process and can be taken out of a motor vehicle readily at the end of the clamping process.
- the holding element for coupling to the part of the piston rod has a fork-shaped coupling portion.
- the retaining element can be brought into engagement in a simple manner with the radially projecting part of the piston rod.
- this fork-shaped coupling portion is only above this radially projecting part radially from the outside on the Piston rod "postponed", so there is a safe intervention.
- the holding element is pivotally mounted on the gripper element and at least in its engaged position with the part of the piston rod can be fixed. This configuration ensures that the retaining element can not slip off the radially projecting part of the piston rod. Due to the pivotable mounting on the gripper element further an extremely simple operation is achieved.
- the holding element may also be displaceably mounted on the gripper element and likewise be fixable to the part of the piston rod at least in its engagement position. This also ensures extremely easy operation.
- a bearing screw For holding the retaining element on the gripper element can further be provided in a simple manner according to claim 5, a bearing screw.
- This bearing screw can be solved for example for the adjustment and then tightened again, so that in this way also a fixation of the retaining element is achieved at least in the engaged position.
- fixation can also be done in other ways.
- a locking element is provided for fixing the engagement position.
- a locking element may be, for example to act a spring-loaded detent ball, which is arranged either in the holding element itself or in the gripper element and engages corresponding detent in a recess or bore of the corresponding other component in the engaged position.
- a clamping screw may be provided for fixing the engagement position, which is tightened in a simple manner after reaching the engagement position of the holding element on the gripper element. This also ensures a fixation of the engaged position sure.
- Fig. 1 shows a perspective view of a first embodiment of a retaining element 1 together with a bearing bush 2 and a bearing screw 3.
- the bearing screw 3 is for mounting the retaining element 1 through a corresponding through hole 4 of the bearing bush 2 can be inserted and inserted into a corresponding internal thread of a gripper element or a Pulling spindle are screwed.
- this forms on the underside a cylindrical bearing section 5 with which the bearing bush 2 can be inserted into a corresponding bearing bore 6 of the retaining element 1 with little play.
- the holding element 1 is plate-shaped in the present embodiment and may accordingly consist of a sheet metal component having a thickness between 3 and 5 millimeters.
- the holding element forms a fork-shaped coupling portion 7 with two fork legs 8 and 9.
- the fork leg 9 is an integral part of a connecting portion 10, which in its fork legs 8 and 9 opposite end of a "back" or after outside projecting actuating portion 11 forms.
- the holding element 1 has a further through-bore 12, which in particular for determining an engagement position, for example releasably engageable with a spring-loaded detent ball. It is easily conceivable that the retaining element 1 can be pivoted about the longitudinal center axis 13 of the bearing bush 2 or the bearing screw 3 in the direction of the double arrow 14 via the actuating portion 11.
- Fig. 2 shows the holding element 1 in a state mounted on a gripper element 20 in plan view.
- This gripper element 20 is part of a device 21 for clamping a spring damper leg.
- the gripper element 20 as in particular from Fig. 3 can be seen, hook-shaped and is connected to a spring coil 22 of a coil spring 23 into engagement.
- this has a second gripper element 24, which is also hook-shaped and with the same spring coil 22 of the coil spring 23 is engaged, as in particular Fig. 3 is apparent.
- the holding element 1 is placed on the top side on the holding element 1 and secured by means of the bearing screw 3 and the bearing bush 2. It is off Fig. 3 recognizable that the gripper element 20 is mounted on a pulling spindle 25, which has a corresponding internal thread 26 for mounting the bearing screw 3. As an alternative to this embodiment with respect to the pulling spindle 25, it may also be provided that the gripper element 20 is closed on the upper side and the internal thread 26 is thus arranged directly in the gripper element 20.
- the holding element 1 is shown in an engaged position, in which the holding element. 1 with its fork-shaped coupling element 7 with a kind of plate 27 is engaged.
- This plate 27 is axially fixed to a piston rod 28 of a particular in Fig. 3 partially shown spring damper leg 29 arranged.
- Such a plate 27 is usually used for attachment of a protective cover which covers the piston rod 28 in use circumferentially and thus protects against external influences.
- the second gripper element 24 is also arranged fixedly in the upper end region of a second traction spindle 30 in the region of the upper spring plate 60.
- a mounting thread 61 is provided in the end region of the piston rod 28 of the spring damper leg 29, on which a corresponding mounting nut 62 is screwed.
- the lower end regions of the two draw screws 25 and 30 can, for example, communicate with a holding plate 64 via corresponding draw nuts 65 and 66.
- This holding plate 64 is in the clamping process, for example, with the lower spring plate 63 of the spring damper leg 29 in engagement.
- the lower spring plate 63 is welded in a known manner with the damper tube 32 of the spring damper leg 29 fixed.
- a spring-loaded detent ball may be provided in the gripper element 20 in the region of the through hole 12, so that this engagement position is held securely but releasably.
- the through hole 12 may be configured as a threaded bore, in which a, not shown in the drawing, clamping screw is used, so that the holding element 1 against the gripper member 20 can be clamped and thus fixed.
- both holding elements 40 form and 50 each have a fork-shaped coupling element 42 and 52, with which the holding elements 40 and 50 by corresponding displacement in the direction of the double arrow 35, for example, with the plate 27 of the piston rod 28 from Fig. 3 can be engaged and disengaged again.
- the bearing bush 2 can be provided together with the bearing screw 3. By simply loosening the bearing screw 3 off Fig. 3 Thus, a displacement of the retaining element 40 in the direction of the double arrow 35 is made possible. On the other hand, this can be fixed by the bearing screw 3 in the engaged position with a corresponding configuration of the bearing bush 2 fixed on the gripper element 20.
- the provided with the longitudinal slot 51 bearing web 53 of the retaining element 50 may also be provided with further holes 54 and 55, which may serve for example for detent fixing both the engaged position and the disengaged position.
- the holding elements 1, 40 and 50 can certainly be designed differently. In this case, even further embodiments of such a holding element are conceivable, which is ultimately dependent on the conditions of use and the design of a spring tensioner or a device for tensioning a spring shock absorber leg.
- a gripper element can also be configured, for example, in the manner as in the Konsolfederspanner from the DE 196 31 524 C1 is known. There, such a gripper element is exemplified as a clamping claw.
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Description
Die Erfindung betrifft eine Vorrichtung zum Spannen eines Federdämpferbeines mit wenigstens einem Greiferelement, welches beim Spannvorgang mit einer Federwindung einer im Federdämpferbein zwischen einem oberen und einem unteren Federteller unter Vorspannung eingesetzten Schraubenfeder in Eingriff steht und mit einem Kupplungselement, welches mit einem von der ersten Federwindung axial beabstandeten Teil oder mit dem unteren Federteller des Federdämpferbeins in Eingriff steht, wobei zum Spannen der Schraubenfeder der axiale Abstand zwischen dem Greiferelement und dem Kupplungselement veränderbar ist und, wobei das Federdämpferbein eine Kolbenstange aufweist, welche mit einem radial vorstehenden Teil versehen ist.The invention relates to a device for tensioning a spring damper strut having at least one gripper element, which engages during tensioning with a spring coil of a spring in the strut between an upper and a lower spring plate under bias coil spring engaged and with a coupling element, which with one of the first spring coil axially spaced part or with the lower spring plate of the spring damper strut is engaged, wherein for tensioning the coil spring, the axial distance between the gripper element and the coupling element is variable and, wherein the spring damper strut has a piston rod which is provided with a radially projecting part.
Federdämpferbeine sind aus dem Stand der Technik, insbesondere aus dem Kraftfahrzeugbau, seit langem bekannt. Ein solches Federdämpferbein weist eine Schraubenfeder auf, welche zwischen einem "oberen" und einem "unteren" Federteller des Federdämpferbeines unter Vorspannung aufgenommen ist. Der untere Federteller ist dabei an einem sog. Dämpferrohr feststehend angeordnet, welches im Betrieb an einem abzufedernden Achsbauteil gelagert ist. Dieses Dämpferrohr dient zur Aufnahme eines sog. Stoßdämpfers, welcher wiederum mit einer Kolbenstange versehen ist, die vertikal nach oben aus dem Dämpferrohr herausragt. Im oberen Endbereich dieser Kolbenstange ist ein Montagegewinde vorgesehen, über welches die Kolbenstange mit dem oberen Federteller feststehend koppelbar ist. Der maximale Abstand zwischen dem unteren Federteller und dem oberen Federteller wird somit im fertig montierten Zustand durch die Länge der aus dem Dämpferrohr herausragenden Kolbenstange bestimmt. Des Weiteren sind Konstruktionen von Federdämpferbeinen bekannt, bei welchen diese Kolbenstange unterhalb des oberen Federtellers ein radial vorstehendes Teil aufweist, welches in der Regel tellerartig ausgebildet ist. Auch kann die Kolbenstange selbst einen radial erweiterten Absatz aufweisen, welcher ebenfalls in einem axialen Abstand zum oberen Federteller angeordnet ist. In der Regel weist die Kolbenstange bei modernen Achskonstruktion im Bereich des oberen Federtellers ein radial vorstehendes Teil, insbesondere in Form eines Tellers auf, welcher zur Befestigung einer Schutzhülle für die Kolbenstange dient.Spring damper legs are known from the prior art, in particular from the automotive industry, for a long time. Such a spring damper leg has a coil spring which is accommodated under tension between an "upper" and a "lower" spring plate of the spring damper leg. The lower spring plate is fixed to a so-called damper tube, which is in operation is mounted on a axle component to be mitigated. This damper tube serves to receive a so-called. Shock absorber, which in turn is provided with a piston rod which protrudes vertically upwards from the damper tube. In the upper end of this piston rod, a mounting thread is provided, via which the piston rod with the upper spring plate is fixed coupled. The maximum distance between the lower spring plate and the upper spring plate is thus determined in the assembled state by the length of the protruding from the damper rod piston rod. Furthermore, constructions of spring damper legs are known in which this piston rod below the upper spring plate has a radially projecting part, which is formed plate-like in the rule. Also, the piston rod itself may have a radially expanded shoulder, which is also arranged at an axial distance from the upper spring plate. In general, the piston rod in modern axle construction in the region of the upper spring plate, a radially projecting part, in particular in the form of a plate, which serves to attach a protective cover for the piston rod.
Bei neueren Fahrzeugkonstruktionen und insbesondere bei sog. Sportfahrwerken werden als Stoßdämpfer sog. Gasdruckdämpfer eingesetzt, welche sich dadurch auszeichnen, dass die Kolbenstange mit einer gegen den oberen Federteller drückenden Axialkraft beaufschlagt ist. Dies bedeutet, dass die Kolbenstange durch diese Axialkraft stets in ihrem "ausgezogenen" Zustand verbleibt.In newer vehicle designs and in particular in so-called sports suspensions, what are known as gas shock absorbers are used as shock absorbers, which are characterized in that the piston rod is acted upon by an axial force pressing against the upper spring plate. This means that the piston rod always remains in its "extended" state due to this axial force.
Zum Ausbauen von Federdämpferbeinen aus einem Kraftfahrzeug, werden bekannter Weise sog. Federspanner eingesetzt. Dazu wird die zwischen den Federtellern unter Vorspannung eingesetzte Schraubenfeder mit dem Federspanner gespannt, so dass sich bei auf Block gespannter Schraubenfeder der axiale Abstand der beiden Federteller verkürzt. Bei herkömmlichen Federdämpferbeinen verkürzt sich damit die gesamte Länge des Federdämpferbeines, so dass dieses nach dem Spannen der Schraubenfeder aus dem Fahrzeug herausgenommen werden.To remove spring damper legs from a motor vehicle, known so-called. Federspanner be used. For this purpose, the spring used between the spring plates under bias coil spring is tensioned with the spring tensioner, so shortened in block tensioned coil spring, the axial distance of the two spring plate. In conventional spring damper legs so that shortens the entire length of the spring damper strut, so that this are taken out after the tensioning of the coil spring from the vehicle.
Dabei werden unterschiedliche Federspanner zum Spannen von Schraubenfedern eingesetzt. Hiezu sei beispielhaft auf die
Beim Gegenstand der
In ähnlicher Weise ist auch der Federspanner nach der
Sind jedoch Gasdruckdämpfer als Stoßdämpfer vorgesehen, so findet diese Verkürzung des gesamten Federdämpferbeines bzw. die Verringerung des Abstandes der beiden Federteller nicht statt, da der obere Federteller durch die Kolbenstange in seinem maximalen Abstand vom unteren Federteller gehalten wird. Damit ist es nur schwer oder gar nicht möglich, ein solches Federdämpferbein aus einem Kraftfahrzeug mit den bekannten Federspannern auszubauen.However, if gas pressure shock absorbers are provided as shock absorbers, then this shortening of the entire spring shock absorber leg or the reduction of the distance of the two spring plates takes place does not take place because the upper spring plate is held by the piston rod in its maximum distance from the lower spring plate. Thus, it is difficult or impossible to remove such a spring strut from a motor vehicle with the known spring tensioners.
Die
Demgemäß liegt der Erfindung die Aufgabe zsulgrunde, eine Vorrichtung zum Spannen eines Federdämpferbeines mit Gasdruckdämpfer derart auszugestalten, dass auch ein solches Federdämpferbein zum Ausbauen aus einem Kraftfahrzeug verkürzbar ist.Accordingly, the invention has the object zsulgrunde to design a device for tensioning a spring damper strut with gas spring such that even such a spring damper strut for removal from a motor vehicle can be shortened.
Die Aufgabe wird erfindungsgemäß zusammen mit den Merkmalen des Oberbegriffes des Anspruches 1 dadurch gelöst, dass im Bereich des Greiferelements ein zusätzliches, verstellbares Haltelement vorgesehen ist, welches aus einer neutralen, nicht mit dem Teil der Kolbenstange in Eingriff stehenden Position in eine wirksame, mit dem Teil der Kolbenstange in Eingriff bringbare Position verstellbar ist und, dass der Abstand zwischen dem zusätzlichen, mit dem Teil der Kolbenstange in Eingriff stehenden Haltelement und dem Kupplungselement beim Spannvorgang verkürzbar ist.The object is achieved according to the invention together with the features of the preamble of
Durch die erfindungsgemäße Ausgestaltung wird eine Vorrichtung zum Spannen eines Federdämpferbeines zur Verfügung gestellt, mit welcher ein Federdämpferbein insgesamt verkürzbar ist, welches einen Gasdruckdämpfer als Stoßdämpfer aufweist.The inventive design, a device for tensioning a spring damper leg is provided, with which a spring damper strut is shortened as a whole, which has a gas spring as a shock absorber.
Dazu ist vorgesehen, dass im Bereich des Greiferelementes ein zusätzliches Halteelement vorgesehen ist. Dieses zusätzliche Halteelement ist aus einer neutralen, nicht mit dem radial vorstehenden Teil der Kolbenstange in Eingriff stehenden Position in eine wirksame, mit dem radial vorstehenden Teil der Kolbenstange in Eingriff stehende Position verstellbar. D.h., dass eine solche Vorrichtung in herkömmlicher Art und Weise, wie dies aus dem Stand der Technik allgemein für Federspanner bekannt ist, an einer Schraubenfeder bzw. an einem Federdämpferbein ansetzbar ist. Nach dem Ansetzen insbesondere des oberen, im Bereich des oberen Federtellers angesetzten Greiferelementes kann nun das Halteelement "in die Feder" hinein verstellt werden und somit mit dem radial vorstehenden Teil der Kolbenstange in Eingriff gebracht werden.For this purpose, it is provided that an additional retaining element is provided in the region of the gripper element. This additional holding element is adjustable from a neutral, not with the radially projecting part of the piston rod engaged position in an operative, with the radially projecting part of the piston rod engaged position. That is, such a device in conventional manner, as is generally known from the prior art for spring compressor, on a coil spring or on a spring damper leg is attachable. After attaching, in particular, the upper, in the region of the upper spring plate attached gripper element, the holding element can now be adjusted "into the spring" and thus be brought into engagement with the radially projecting part of the piston rod.
Beim anschließenden Spannen der Schraubenfeder gegen den unteren Federteller wird der Abstand des Greiferelementes zum unteren Federteller verkürzt, so dass die Schraubenfeder gespannt wird. Da die Kolbenstange über das radial vorstehende Teil mit dem zusätzlichen Halteelement in Eingriff steht, wird auch gleichzeitig die Kolbenstange in den Stoßdämpfer hineingedrückt. Damit ist sichergestellt, dass sich das Federdämpferbein insgesamt beim Spannvorgang verkürzt und am Ende des Spannvorganges aus einem Kraftfahrzeug ohne weiteres herausgenommen werden kann.During the subsequent tightening of the coil spring against the lower spring plate, the distance of the gripper element is shortened to the lower spring plate, so that the coil spring is tensioned. Since the piston rod is engaged via the radially projecting part with the additional retaining element, the piston rod is also pressed into the shock absorber at the same time. This ensures that the spring damper overall shortened during the clamping process and can be taken out of a motor vehicle readily at the end of the clamping process.
Weitere vorteilhafte Ausgestaltungen der Erfindung sind den weiteren Unteransprüchen entnehmbar.Further advantageous embodiments of the invention can be taken from the further subclaims.
So kann gemäß Anspruch 2 vorgesehen sein, dass das Halteelement zur Kopplung mit dem Teil der Kolbenstange einen gabelförmigen Kupplungsabschnitt aufweist. Durch diesen gabelförmigen Kupplungsabschnitt lässt sich das Halteelement in einfacher Art und Weise mit dem radial vorstehenden Teil der Kolbenstange in Eingriff bringen. Dazu wird dieser gabelförmige Kupplungsabschnitt lediglich oberhalb dieses radial vorstehenden Teils radial von außen auf die Kolbenstange "aufgeschoben", so dass ein sicherer Eingriff vorliegt.Thus, it can be provided according to
Des Weiteren kann gemäß Anspruch 3 vorgesehen sein, dass das Halteelement am Greiferelement schwenkbar gelagert ist und zumindest in seiner Eingriffsposition mit dem Teil der Kolbenstange fixierbar ist. Durch diese Ausgestaltung ist sichergestellt, dass das Halteelement nicht von dem radial vorstehenden Teil der Kolbenstange abrutschen kann. Durch die schwenkbare Lagerung am Greiferelement wird des Weiteren eine äußerst einfache Bedienbarkeit erreicht.Furthermore, it can be provided according to
Alternativ zur Ausgestaltung gemäß Anspruch 3 kann das Halteelement am Greiferelement auch verschiebbar gelagert sein und ebenfalls zumindest in seiner Eingriffsposition mit dem Teil der Kolbenstange fixierbar sein. Auch hierdurch wird eine äußerst einfache Bedienbarkeit erreicht.Alternatively to the embodiment according to
Zur Halterung des Halteelementes am Greiferelement kann des Weiteren in einfacher Weise gemäß Anspruch 5 eine Lagerschraube vorgesehen sein. Diese Lagerschraube kann beispielsweise für den Verstellvorgang gelöst und anschließend wieder angezogen werden, so dass hierdurch ebenfalls eine Fixierung des Haltelementes zumindest in der Eingriffposition erreicht wird.For holding the retaining element on the gripper element can further be provided in a simple manner according to claim 5, a bearing screw. This bearing screw can be solved for example for the adjustment and then tightened again, so that in this way also a fixation of the retaining element is achieved at least in the engaged position.
Darüber hinaus kann gemäß der Ansprüche 6 und 7 die Fixierung auch in anderer Weise erfolgen.In addition, according to the
So kann gemäß Anspruch 6 vorgesehen sein, dass zur Fixierung der Eingriffsposition ein Rastelement vorgesehen ist. Bei einem solchen Rastelement kann es sich zum Beispiel um eine federbelastete Rastkugel handeln, welche entweder im Halteelement selbst oder im Greiferelement angeordnet ist und entsprechend in eine Vertiefung oder Bohrung des entsprechend anderen Bauteils in der Eingriffsposition rastend eingreift.Thus, it can be provided according to
Gemäß Anspruch 7 kann zur Fixierung der Eingriffsposition auch eine Klemmschraube vorgesehen sein, welche in einfacher Weise nach Erreichen der Eingriffsposition des Halteelementes am Greiferelement festgezogen wird. Auch hierdurch ist eine Fixierung der Eingriffsposition sicher gewährleistet.According to claim 7, a clamping screw may be provided for fixing the engagement position, which is tightened in a simple manner after reaching the engagement position of the holding element on the gripper element. This also ensures a fixation of the engaged position sure.
Anhand der Zeichnung wird die Erfindung nachfolgend anhand einiger Ausführungsbeispiele näher erläutert, wobei die Ausgestaltung des Halteelementes nicht auf die konkreten Ausführungsbeispiele beschränkt ist. Es zeigt:
- Fig. 1
- eine perspektivische Explosionsdarstellung einer ersten Ausführungsvariante eines Halteelementes zusammen mit einer Lagerbuchse sowie einer Montgeschraube;
- Fig. 2
- eine Draufsicht auf den oberen Teil eines Ausführungsbeispiels einer Vorrichtung zum Spannen eines Federdämpferbeines mit zwei Zugspindeln und zwei Greiferelementen, bei welchem das Halteelement aus
Fig. 1 an einem der Greiferelemente angeordnet ist; - Fig. 3
- einen Vertikalschnitt durch den oberen Teil der Vorrichtung aus
Fig. 2 in ihrem an einer Schraubenfeder angesetzten Zustand; - Fig. 4
- eine zweite Ausführungsvariante eines Halteelementes;
- Fig. 5
- eine dritte Ausführungsvariante eines Halteelementes.
- Fig. 1
- an exploded perspective view of a first embodiment of a holding element together with a bearing bush and a Montgeschraube;
- Fig. 2
- a plan view of the upper part of an embodiment of an apparatus for tensioning a spring damper leg with two tensioning spindles and two gripper elements, wherein the holding element of
Fig. 1 is arranged on one of the gripper elements; - Fig. 3
- a vertical section through the upper part of the device
Fig. 2 in its attached to a coil spring state; - Fig. 4
- a second embodiment of a holding element;
- Fig. 5
- a third embodiment of a holding element.
Das Halteelement 1 ist beim vorliegenden Ausführungsbeispiel plattenförmig ausgebildet und kann dementsprechend aus einem Blechbauteil bestehen, das eine Dicke zwischen 3 und 5 Millimetern aufweist. In seinem der Lagerbohrung 6 gegenüberliegenden Endbereich bildet das Halteelement einen gabelförmigen Kupplungsabschnitt 7 mit zwei Gabelschenkeln 8 und 9. Dabei ist der Gabelschenkel 9 einstückiger Bestandteil eines Verbindungsabschnittes 10, welcher in seinem den Gabelschenkeln 8 und 9 gegenüberliegenden Endbereich einen nach "hinten" bzw. nach außen vorstehenden Betätigungsabschnitt 11 bildet. Im Bereich dieses Betätigungsabschnittes 11 weist das Halteelement 1 eine weitere Durchgangsbohrung 12 auf, welche insbesondere zur Festlegung einer Eingriffsposition beispielsweise mit einer federbelasteten Rastkugel lösbar in Eingriff bringbar ist. Es ist leicht vorstellbar, dass über den Betätigungsabschnitt 11 das Halteelement 1 um die Längsmittelachse 13 der Lagerbusche 2 bzw. der Lagerschraube 3 in Richtung des Doppelpfeiles 14 schwenkbar ist.The holding
Das Halteelement 1 ist oberseitig auf das Halteelement 1 aufgesetzt und mittels der Lagerschraube 3 sowie der Lagerbuchse 2 befestigt. Dabei ist aus
In den
Des Weiteren ist aus den
Die unteren Endbereiche der beiden Zugspindeln 25 und 30 können beispielsweise mit einer Halteplatte 64 über entsprechende Zugmuttern 65 und 66 in Verbindung stehen. Diese Halteplatte 64 steht beim Spannvorgang beispielsweise mit dem unteren Federteller 63 des Federdämpferbeines 29 in Eingriff. Der untere Federteller 63 ist in bekannter Weise mit dem Dämpferrohr 32 des Federdämpferbeines 29 feststehend verschweißt.The lower end regions of the two draw screws 25 and 30 can, for example, communicate with a holding
Beim gleichmäßigen Anziehen der Zugmuttern 65 und 66 wird somit die Schraubenfeder 23 gegen den unteren Federteller 63 des Federdämpferbeines 29 in Richtung des Pfeiles 31 gespannt. Damit verkürzt sich das gesamte Federdämpferbein 29, so dass dieses aus einem Kraftfahrzeug in einfacher Weise herausnehmbar ist. Aufgrund des Eingriffes des Halteelementes 1 mit dem Teller 27 wird gleichzeitig auch die Kolbenstange in Richtung des Pfeiles 31 in das Dämpferrohr 32 des Federdämpferbeines 29 hineingedrückt, so dass eine gesamte Verkürzung des Federdämpferbeines 29 beim Spannvorgang sicher bewirkt wird.When uniformly tightening the
Wie insbesondere aus
Zur Fixierung der Eingriffsposition kann im Greiferelement 20 im Bereich der Durchgangsbohrung 12 eine federbelastete Rastkugel vorgesehen sein, so dass diese Eingriffsposition sicher, aber lösbar gehalten ist.To fix the engagement position, a spring-loaded detent ball may be provided in the
Auch kann die Durchgangsbohrung 12 als Gewindebohrung ausgeführt sein, in welche eine, in der Zeichnung nicht weiter dargestellte, Klemmschraube einsetzbar ist, so dass das Halteelement 1 gegen das Greiferelement 20 verspannbar und somit fixierbar ist.Also, the through
In den Zeichnungsfiguren 4 und 5 sind beispielhaft zwei weitere Ausführungsformen von Halteelementen 40 und 50 dargestellt. Diese Halteelemente 40 und 50 weisen bei den dargestellten Ausführungsbeispielen jeweils einen Haltesteg 43 bzw. 53 mit einem Längsschlitz 41 bzw. 51 auf und können dementsprechend mittels der Lagerbuchse 2 bzw. der Lagerschraube 3 am Greiferelement 20 geradlinig verstellbar festgelegt sein. Dabei bilden beide Halteelemente 40 und 50 jeweils ein gabelförmig ausgebildetes Kupplungselement 42 bzw. 52, mit welchen die Halteelemente 40 und 50 durch entsprechendes Verschieben in Richtung des Doppelpfeiles 35 beispielsweise mit dem Teller 27 der Kolbenstange 28 aus
Zur Fixierung des Halteelementes 40 kann dabei die Lagerbuchse 2 zusammen mit der Lagerschraube 3 vorgesehen sein. Durch einfaches Lösen der Lagerschraube 3 aus
Alternativ dazu kann der mit dem Längsschlitz 51 versehene Lagersteg 53 des Halteelementes 50 auch mit weiteren Bohrungen 54 und 55 versehen sein, welche beispielsweise zur rastenden Festlegung sowohl der Eingriffsposition als auch der außer Eingriff befindlichen Position dienen können.Alternatively, the provided with the
Es ist erkennbar, dass die Halteelemente 1, 40 und 50 durchaus unterschiedlich ausgestaltet sein können. Dabei sind auch noch weitere Ausgestaltungen eines solchen Halteelementes denkbar, was letztendlich von den Einsatzbedingungen und der Ausgestaltung eines Federspanners bzw. einer Vorrichtung zum Spannen eines Federdämpferbeines abhängig ist.It can be seen that the holding
So kann ein Greiferelement auch beispielsweise in der Art und Weise ausgestaltet sein, wie dies bei dem Konsolfederspanner aus der
Claims (7)
- Apparatus (21) for tensioning a spring/damper strut (29) having at least one gripper element (20) which, during the tensioning operation, is in engagement with a spring turn (22) of a coil spring (23) which is inserted under prestress in the spring/damper strut (29) between an upper and a lower spring collar (60 and 63), and having a coupling element (64) which is in engagement with a part which is spaced apart axially from the first spring turn or with the lower spring collar (63) of the spring/damper strut (29), it being possible for the axial spacing between the gripper element (20) and the coupling element (64) to change in order to tension the coil spring (23), and the spring/damper strut (29) having a piston rod (28) which is provided with a radially projecting part (collar 27), characterized in that an additional, adjustable holding element (1, 40, 50) is provided in the region of the gripper element (20), which holding element (1, 40, 50) can be adjusted from a neutral position (phantom lines 33), in which it is not in engagement with the part of the piston rod (28), into an active position, in which it can be brought into engagement with the part (collar 27) of the piston rod (28), and in that the spacing between the additional holding element (1, 40, 50) which is in engagement with the part (27) of the piston rod (28) and the coupling element (64) can be shortened during the tensioning operation.
- Apparatus according to Claim 1, characterized in that the holding element (1, 40, 50) has a fork-shaped coupling section (7, 42, 52) for coupling to the part (collar 27) of the piston rod (28).
- Apparatus according to Claim 1 or 2, characterized in that the holding element (1) is mounted pivotably on the gripper element (20) and can be fixed with the part (collar 27) of the piston rod (28) at least in its engagement position.
- Apparatus according to Claim 1 or 2, characterized in that the holding element (40, 50) is mounted displaceably on the gripper element (20) and can be fixed with the part (collar 27) of the piston rod (28) at least in its engagement position.
- Apparatus according to Claim 3 or 4, characterized in that the holding element (1) is fastened adjustably to the gripper element (20) via a bearing screw (3).
- Apparatus according to Claim 3, 4 or 5, characterized in that a latching element is provided for fixing at least the engagement position.
- Apparatus according to Claim 3, 4 or 5, characterized in that a clamping screw is provided for fixing the engagement position.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200820012339 DE202008012339U1 (en) | 2008-09-16 | 2008-09-16 | Device for tensioning a spring damper leg |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2163349A2 EP2163349A2 (en) | 2010-03-17 |
EP2163349A3 EP2163349A3 (en) | 2010-11-17 |
EP2163349B1 true EP2163349B1 (en) | 2015-01-14 |
Family
ID=40031259
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20090009768 Not-in-force EP2163349B1 (en) | 2008-09-16 | 2009-07-29 | Device for tensioning a shock absorber |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2163349B1 (en) |
DE (1) | DE202008012339U1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106624751A (en) * | 2016-12-27 | 2017-05-10 | 柳州孔辉汽车科技有限公司 | Tool assembly for dismounting and mounting spring |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202011050353U1 (en) * | 2011-06-06 | 2011-07-11 | Hazet-Werk Hermann Zerver Gmbh & Co. Kg | Inner spring tensioner with spacers |
DE202011050354U1 (en) * | 2011-06-06 | 2011-07-11 | Hazet-Werk Hermann Zerver Gmbh & Co. Kg | Clamping plate for a spring tensioner and spring tensioner |
CN110285168A (en) * | 2019-05-15 | 2019-09-27 | 上海电器科学研究院 | A kind of energy storage compressed spring mounting structure |
US11612992B1 (en) | 2022-01-27 | 2023-03-28 | Edmund Bruce Noland | Apparatus and/or method for installing and/or replacing vehicle coil spring |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE9314698U1 (en) | 1993-09-29 | 1993-12-09 | Klann, Horst, 78052 Villingen-Schwenningen | Safety spring tensioner for McPherson struts |
DE19631524C1 (en) | 1996-08-03 | 1997-11-27 | Angelika Weishaar | Spring clamp, especially for vehicle helical springs |
DE29903826U1 (en) * | 1999-03-03 | 1999-05-27 | Klann Tools Ltd., Didcot, Oxfordshire | Device for spring tensioners for aligning a spring plate |
US7386926B2 (en) * | 2006-03-23 | 2008-06-17 | Branick Industries, Inc. | Strut spring compressor and method |
-
2008
- 2008-09-16 DE DE200820012339 patent/DE202008012339U1/en not_active Expired - Lifetime
-
2009
- 2009-07-29 EP EP20090009768 patent/EP2163349B1/en not_active Not-in-force
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106624751A (en) * | 2016-12-27 | 2017-05-10 | 柳州孔辉汽车科技有限公司 | Tool assembly for dismounting and mounting spring |
Also Published As
Publication number | Publication date |
---|---|
DE202008012339U1 (en) | 2008-11-20 |
EP2163349A3 (en) | 2010-11-17 |
EP2163349A2 (en) | 2010-03-17 |
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