EP2998072A1 - Suspension strut tensioner for exchanging a spring or a shock absorber of a suspension strut of a motor vehicle - Google Patents

Suspension strut tensioner for exchanging a spring or a shock absorber of a suspension strut of a motor vehicle Download PDF

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Publication number
EP2998072A1
EP2998072A1 EP15002330.7A EP15002330A EP2998072A1 EP 2998072 A1 EP2998072 A1 EP 2998072A1 EP 15002330 A EP15002330 A EP 15002330A EP 2998072 A1 EP2998072 A1 EP 2998072A1
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EP
European Patent Office
Prior art keywords
strut
spring
actuator
tensioner
axis
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Granted
Application number
EP15002330.7A
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German (de)
French (fr)
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EP2998072B1 (en
Inventor
Lothar Michel
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Ssw Schmack Spezialwerkzeuge & Co KG GmbH
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Ssw Schmack Spezialwerkzeuge & Co KG GmbH
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/14Hand 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
    • B25B27/30Hand 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
    • B25B27/302Hand 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
    • B25B27/304Hand 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 present invention relates to a strut tensioner for replacement of a spring or a shock absorber of a strut of a motor vehicle according to the preamble of one of claims 1 or 5.
  • struts For damping individual wheels of a motor vehicle struts which comprise a preferably made of steel spring and a guided at least partially inside the spring shock absorber in piston-cylinder design.
  • the spring is firmly connected to the shock absorber, so that the characteristics of the spring are combined with the properties of the shock absorber for damping the wheel.
  • Fig. 1 An example of such a known from the prior art transportable spring tensioner is in Fig. 1 displayed. In this case, two steel-forged spring holders are attached to the spring compressor, which engage spaced from each other in the spring to be clamped.
  • a return spring is provided on the piston of the shock absorber, which returns the piston in the unloaded state further than before in the piston.
  • the spring in the new generation of spring struts must be much more tensioned than before, that is, the spring must be compressed much more to the piston recovered in the cylinder to reach.
  • the spring geometry changes so much that in the spring compressor according to Fig. 1 There is a risk that a spring holder slips off the spring.
  • a strut tensioner which is attached to a workbench and having a substantially vertically oriented actuator, to which a support element in the upper region, a clamping device in the central region and a support plate for holding the strut are provided in the lower region.
  • a number of movable gripper are provided, by means of which the support member can be brought into the position of the piston, the middle jig is held laterally adjustable and the lower support plate is height adjustable.
  • the present invention seeks to provide a strut tensioner of the type mentioned, which is inexpensive to produce and easy to use.
  • a designed according to this technical teaching strut tensioner has the advantage that the strut tensioner is inexpensive to produce due to a manageable number of items.
  • the transportable strut tensioner either as a single actuator according to claim 1 or as a supplementary actuator according to claim 5 ensures that the spring strut is used both in a stationary strut tensioner according to the invention, as well as a mobile strut tensioner. Consequently, the purchase of only a strut tensioner is required for the car workshop, which reduces the investment costs. Other workshops already have a mobile suspension strut and buy only the correspondingly cheaper stationary strut tensioner according to the invention.
  • the carrier element is designed as an actuator. This has the advantage that the travel of the spring stretcher is increased because the travel of the stationary actuator and the portable (mobile) strut tensioners add up.
  • the adapter holds the transportable spring tensioner pivotally on the carrier element, so that the top plate held on the spring tensioner can be pivoted away to create space for removal of the coil spring or the shock absorber.
  • an adjustment device is provided, via which the strut in the direction of the X-axis is movable and / or via which the strut about the X-axis is pivotable.
  • asymmetrical helical springs it can happen that, after the piston has been separated from the helical spring, either the piston or the helical spring or both leave their original position and are no longer aligned with the opening in the head plate.
  • the installer may indeed convert the coil spring into the desired position, because it is easily accessible, but the piston located inside the coil spring is difficult to access, especially when it has been pulled into the cylinder by the return spring of the new generation. In this situation, the piston can easily be brought with the adjusting device in the desired position to assemble the strut in a simple manner.
  • the adjustment of the strut via a mounted on the strut mount frame, which engages around the actuator and is equipped with a set screw.
  • a mounted on the strut mount frame which engages around the actuator and is equipped with a set screw.
  • the strut can also be pivoted precisely about the X-axis without the production costs rising significantly.
  • Fig. 1 shows a transportable strut tensioner 1 with a telescopically constructed actuator 2, comprising an outer tube 4 and there in retractable inner tube 6.
  • the outer tube 4 and the inner tube 6 are connected via an internal spindle not shown here in such a way that upon actuation of a rotary knob. 8 the spindle moves the inner tube 6 relative to the outer tube 4.
  • a respective spring holder receptacle 10 for receiving a respective spring holder 12 is provided on the outer tube 4 and also on the inner tube 6.
  • the spring holder receptacle 10 comprises a circumferential shoulder 16, a thread 17 and a threaded sleeve 18, wherein the spring holder 12 between the shoulder 16 and threaded sleeve 18 is inserted into the spring holder receptacle 10 before the threaded sleeve 18 is screwed into the thread 17 while the spring holder 12 clamped ,
  • This spring compressor 1 is portable and suitable to tension the coil spring 14 of a strut, even if the coil spring 14 is still mounted together with the strut on the vehicle.
  • a return spring is mounted on the piston of the shock absorber, which returns the piston to the cylinder of the shock absorber as soon as it is relieved.
  • Such extreme compression of the coil spring 14 is with the in Fig. 1 shown spring compressor is not always possible, especially because the spring holder 12 engage in the coil spring 14 and thus only a limited number of spring gears is available.
  • FIGS. 1 to 7 a first embodiment of a strut tensioner 100 according to the invention is shown.
  • This strut tensioner 100 has a workbench holder 120, so that the entire strut tensioner 100 can be mounted on a workbench, not shown here. This makes it possible that strut in one for the fitter disassemble and assemble pleasant work posture on a workbench.
  • the strut tensioner 100 further comprises a vertically oriented actuator 122, on the radially projecting an adjusting device 124 is attached to which a strut mount 126 connects.
  • the strut mount 126 engages around a cylinder 128 of a shock absorber 130 and thus keeps the strut 130 securely and non-slip on the strut tensioner 100.
  • the strut mount 126 includes two separate half shells 132 that are held together by right and left retaining bolts 134, thereby clamping the cylinder 128 to the strut tensioner 100.
  • the upper, free end of the actuator 122 is formed as an adapter receptacle 136 to which a corresponding adapter 138 can be attached.
  • this adapter 138 may be a per se known spring compressor 1 according to Fig. 1 be used by means of its held on the inner tube 6 spring retainer 10 to achieve an extension of the actuator and possibly an increase in the travel.
  • the adapter receptacle 136 is designed as a thread and has on a front side a bore 140 for receiving a plug pin 142.
  • the adapter 138 has an unspecified here internal thread, with which the adapter 138 can be screwed onto the adapter receptacle 136. In this case, the adapter 138 is screwed so far that the locking pin 142 can pass through an opening 144 in the adapter into the bore 140.
  • the attached by means of the internal thread on the actuator 122 adapter 138 is generally rotatable about its longitudinal axis together with the spring held in the adapter 138 and about its longitudinal axis and is locked by the locking pin 142.
  • the adapter 138 is open towards the top and towards the front and has a retaining edge 146 below which a shoulder receptacle 148 is formed.
  • This shoulder receptacle 148 is formed corresponding to the shoulder 16 of the spring retainer 10.
  • the spring tensioner 1 is inserted with its spring holder receptacle 10, in particular with its wide shoulder 16 in the shoulder receptacle 148 and then the threaded sleeve 18 of the spring tensioner 1 is screwed into the thread 17 to clamp the shoulder 16 against retaining edge 146, so that the spring tensioner. 1 is held firmly and wobble-free in the adapter 138.
  • spring holder holder 10 can then be either a known from the prior art spring holder 12 or a top plate 152 are attached.
  • a head plate 152 is inserted into the spring holder receptacle 16, which acts from above on the strut 130 as soon as the top plate 152 is moved by operating either the actuator 2 of the spring compressor or the actuator 122 of the strut tensioner against the spring force of the coil spring 14.
  • the top plate 152 has a central opening 154 for receiving the free end of the strut 130.
  • a circumferential safety bar aligned with the strut 130 is provided on the top plate 152 156 provided, which abuts the free end of the strut 130, it should get out once on the opening 154. As a result, unintentional falling out of the shock absorber 130 is prevented.
  • the coil spring is not formed symmetrically to the axis of the shock absorber but has irregular shapes. If, in such an irregular coil spring, the piston of the shock absorber is decoupled from the coil spring, it may happen that the coil spring is offset from the piston, so that both are no longer aligned coaxially. When assembling such a strut then there is the difficulty that when squeezing the coil spring, the free end of the piston no longer hits the opening of the top plate, so that a screwing together of the shock absorber is difficult.
  • the adjusting device 124 is provided between the actuator 122 and the strut mount 126.
  • the actuator 122 is designed in the direction of the Y-axis, while the adjusting device 124 acts in the X-axis direction.
  • the adjusting device 124 comprises a hollow cylinder 160 mounted on the actuator 122, in which an adjusting piston 162 is guided with a precise fit.
  • the strut mount 126 is attached.
  • a frame 164 is also attached, which surrounds the hollow cylinder 160 and the actuator 122 without touching them.
  • an adjusting screw 166 On the other side of the actuator 122 is an adjusting screw 166 which is held near the head end via an adjusting thread in the frame 164, while the free end of the adjusting screw 166 is rotatable and axially immovably held on the actuator 122.
  • a U-shaped holding web 168 is attached to the actuator 122, which is encompassed by two seated on the screw 166 thrust bearings 170, wherein the thrust bearing 170 are pressed by a located on the adjusting screw 166 lock nut 172 against the retaining web 168 to the set screw smoothly rotatable and yet to hold axially immovable.
  • the adjusting screw 166 is arranged axially in alignment with the axis of the hollow cylinder 160 or with the axis of the adjusting piston 162.
  • the adjusting screw 166 is held axially immovable but rotatable on the holding web 168, when the adjusting screw 166 is rotated via the thread located in the frame 164, the frame 164 together with the strut mount 126 and the strut 130 and the adjusting piston 162 held therein are moved in the direction of the X-axis. Axis moves. In this case, the adjusting piston 62 is moved into or out of the hollow cylinder 160. It understands itself that the adjusting piston 162 always remains so far in the hollow cylinder 160 that the strut 130 is reliably held on the actuator 122.
  • the frame 164 is so far away from the actuator 122, that a pivoting of the strut 130 about the X-axis around is possible.
  • the frame 164 pivots together with the adjusting piston 162 and the strut 130 about the axis of the hollow cylinder 160, which is also the axis of the adjusting screw 166 and the adjusting piston 162 at the same time.
  • a respective limiting screw 174 is provided which limits the pivoting.
  • the limit screw 174 abuts the work bench holder 120. Conversely, it is of course also possible by tightening the limit screw 174, the strut 130 to pivot precisely and in small steps about the X-axis.
  • FIGS. 8 to 14 illustrated second embodiment of a strut tensioner according to the invention differs from that in the FIGS. 2 to 7 illustrated first embodiment only in that the actuator (122) is replaced by a support member 222.
  • This support member 222 is a simple tube, which can not be adjusted or extended. Everything else remains unchanged.
  • the above for the first embodiment with respect to Fig. 2 to 7 said applies to the in the Figs. 8 to 13 shown second embodiment in the same way with the proviso that the actuator (122) has been replaced by the tube-like support member (222).
  • this second embodiment is less expensive to manufacture, but has a shorter travel. For many struts this shorter travel is still sufficient.
  • the in the Figs and 15 illustrated third embodiment differs from that in the FIGS. 2 to 7 illustrated first embodiment only in that on the adapter receptacle 136 no adapter (138) for receiving a spring tensioner (1), but a spring holder adapter 338 is attached to which the top plate 152 or the spring holder 12 is directly attachable.
  • This spring holder adapter 338 is formed externally analogous to the spring holder receptacle 10, so that the spring holder 12 or the top plate 152 can be attached thereto in a conventional manner.
  • the spring holder adapter 338 is designed analogously to the adapter 138 so that the spring holder adapter 338, like the adapter 138, can also be attached to the adapter receiver 136 of the actuator 122. Otherwise, both embodiments are identical, which is why to the first embodiment according to the Fig. 2 to 7 said in an analogous manner for this third embodiment according to the Figs. 14 and 15 applies.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

Gegenstand der Erfindung ist ein Federbeinspanner zum Austausch einer Feder oder eines Stoßdämpfers eines Federbeines eines Kraftfahrzeuges, mit einem Stellglied (122), mit einem Werkbankhalter (120) zur Anbringung des Federbeinspanners (1) an einer Werkbank und mit einer am Stellglied (122) angebrachten Federbeinaufnahme (126). Einen Federbeinspanner der genannten Art zu schaffen, welcher kostengünstig herstellbar ist und einfach in der Handhabung ist wird dadurch erreicht, dass am Stellglied (122) ein Adapter (138) zur Anbringung eines transportablen Federspanners (1) vorgesehen ist, wobei am Federspanner (1) ein Federhalter (12) oder eine Kopfplatte (151) anbringbar ist.The invention relates to a spring stretcher for replacing a spring or a shock absorber of a strut of a motor vehicle, with an actuator (122), with a workbench holder (120) for attaching the strut tensioner (1) to a workbench and with an actuator (122) attached Strut mount (126). To provide a strut tensioner of the type mentioned, which is inexpensive to produce and easy to use is achieved in that on the actuator (122) an adapter (138) for attaching a transportable spring compressor (1) is provided, wherein the spring tensioner (1) a spring holder (12) or a top plate (151) is attachable.

Description

Die vorliegende Erfindung betrifft einen Federbeinspanner zum Austausch einer Feder oder eines Stoßdämpfers eines Federbeines eines Kraftfahrzeuges gemäß dem Oberbegriff eines der Ansprüche 1 oder 5.The present invention relates to a strut tensioner for replacement of a spring or a shock absorber of a strut of a motor vehicle according to the preamble of one of claims 1 or 5.

Zur Dämpfung einzelner Räder eines Kraftfahrzeuges werden Federbeine eingesetzt, die eine vorzugsweise aus Stahl gefertigte Feder und einen zumindest teilweise im Inneren der Feder geführten Stoßdämpfer in Kolben-Zylinder Bauweise umfassen. Dabei ist die Feder fest mit dem Stoßdämpfer verbunden, sodass die Eigenschaften der Feder mit den Eigenschaften des Stoßdämpfers zur Dämpfung des Rades kombiniert werden.For damping individual wheels of a motor vehicle struts are used which comprise a preferably made of steel spring and a guided at least partially inside the spring shock absorber in piston-cylinder design. The spring is firmly connected to the shock absorber, so that the characteristics of the spring are combined with the properties of the shock absorber for damping the wheel.

Muss nun entweder die Feder oder der Stoßdämpfer aufgrund eines Defektes oder aufgrund von Verschleiß ausgebaut werden, so muss die Feder vom Stoßdämpfer entkoppelt werden. Hierzu muss die Feder mit einem Federspanner so weit gespannt werden, dass keine Kraft mehr von der Feder auf den Stoßdämpfer wirkt. Erst dann können die entsprechenden Schrauben gelöst werden. Ein Beispiel für einen solchen aus dem Stand der Technik bekannten transportablem Federspanner ist in Fig. 1 abgebildet. Dabei sind an dem Federspanner zwei stahlgeschmiedete Federhalter angebracht, die beabstandet voneinander in die zu spannende Feder eingreifen.If either the spring or the shock absorber has to be removed due to a defect or due to wear, the spring must be decoupled from the shock absorber. For this purpose, the spring with a spring compressor must be stretched so far that no force from the spring acts on the shock absorber. Only then can the corresponding screws be loosened. An example of such a known from the prior art transportable spring tensioner is in Fig. 1 displayed. In this case, two steel-forged spring holders are attached to the spring compressor, which engage spaced from each other in the spring to be clamped.

Bei der neuesten Generation von Federbeinen ist am Kolben des Stoßdämpfers eine Rückholfeder vorgesehen, die den Kolben im entlasteten Zustand weiter als zuvor in den Kolben zurückholt. Um nach einem Tausch der Feder oder des Stoßdämpfers das Federbein wieder zusammenbauen zu können, muss die Feder bei der neuen Generation von Federbeinen viel stärker als bisher gespannt werden, das heißt, die Feder muss viel stärker zusammengedrückt werden, um den in den Zylinder zurückgeholten Kolben zu erreichen. Dabei verändert sich die Federgeometrie so stark, dass bei dem Federspanner gemäß Fig. 1 die Gefahr besteht, dass ein Federhalter von der Feder abrutscht.In the latest generation of struts, a return spring is provided on the piston of the shock absorber, which returns the piston in the unloaded state further than before in the piston. In order to reassemble the spring strut after a replacement of the spring or the shock absorber, the spring in the new generation of spring struts must be much more tensioned than before, that is, the spring must be compressed much more to the piston recovered in the cylinder to reach. The spring geometry changes so much that in the spring compressor according to Fig. 1 There is a risk that a spring holder slips off the spring.

Zu Lösung dieses Problems ist aus der DE 20 2006 007 753 U1 ein Federbeinspanner bekannt, welcher an einer Werkbank befestigt wird und ein im Wesentlichen vertikal ausgerichtetes Stellglied aufweist, an dem im oberen Bereich ein Stützelement, im mittleren Bereich eine Einspannvorrichtung und im unteren Bereich ein Stützteller zur Halterung des Federbeines vorgesehen sind. Am oberen Stützelement sind eine Anzahl beweglicher Greifer vorgesehen, mittels derer das Stützelement in die Position des Kolbens gebracht werden kann, die mittlere Einspannvorrichtung ist seitlich verstellbar gehalten und der untere Stützteller ist höhenverstellbar. Insgesamt ist der aus der DE 20 2006 007 753 U1 bekannte Federspanner aufgrund seiner vielen Einzelteile sehr aufwendig in der Herstellung und sehr kompliziert in der Handhabung.To solve this problem is out of the DE 20 2006 007 753 U1 a strut tensioner is known, which is attached to a workbench and having a substantially vertically oriented actuator, to which a support element in the upper region, a clamping device in the central region and a support plate for holding the strut are provided in the lower region. At the upper support member a number of movable gripper are provided, by means of which the support member can be brought into the position of the piston, the middle jig is held laterally adjustable and the lower support plate is height adjustable. Overall, the one from the DE 20 2006 007 753 U1 known spring compressor due to its many items very expensive to manufacture and very complicated to use.

Davon ausgehend liegt der vorliegenden Erfindung die Aufgabe zugrunde, einen Federbeinspanner der eingangs genannten Art zu schaffen, welcher kostengünstig herstellbar ist und einfach in der Handhabung ist.Based on this, the present invention seeks to provide a strut tensioner of the type mentioned, which is inexpensive to produce and easy to use.

Als technische Lösung dieser Aufgabe wird erfindungsgemäß ein Federbeinspanner der eingangs genannten Art mit den Merkmalen des Anspruches 1 oder 5 vorgeschlagen. Vorteilhafte Weiterbildungen dieses Federbeinspanners sind den Unteransprüchen zu entnehmen.As a technical solution to this problem, a strut tensioner of the aforementioned type with the features of claim 1 or 5 is proposed according to the invention. Advantageous developments of this strut tensioner can be found in the dependent claims.

Ein nach dieser technischen Lehre ausgebildeter Federbeinspanner hat den Vorteil, dass der Federbeinspanner aufgrund einer überschaubaren Anzahl von Einzelteilen kostengünstig herstellbar ist.A designed according to this technical teaching strut tensioner has the advantage that the strut tensioner is inexpensive to produce due to a manageable number of items.

Insbesondere durch die Verwendung des transportablen Federbeinspanners entweder als einziges Stellglied gemäß Anspruch 1 oder als ergänzendes Stellglied gemäß Anspruch 5 wird erreicht, dass der Federbeinspanner sowohl bei einem stationären Federbeinspanner gemäß der Erfindung, als auch als mobiler Federbeinspanner zum Einsatz kommt. Folglich ist für die Kfz-Werkstatt die Anschaffung nur eines Federbeinspanners erforderlich, was die Investitionskosten senkt. Andere Werkstätten verfügen bereits über einen mobilen Federbeinspanner und kaufen lediglich den entsprechend günstigeren stationären Federbeinspanner gemäß der Erfindung zu.In particular, by the use of the transportable strut tensioner either as a single actuator according to claim 1 or as a supplementary actuator according to claim 5 ensures that the spring strut is used both in a stationary strut tensioner according to the invention, as well as a mobile strut tensioner. Consequently, the purchase of only a strut tensioner is required for the car workshop, which reduces the investment costs. Other workshops already have a mobile suspension strut and buy only the correspondingly cheaper stationary strut tensioner according to the invention.

In einer bevorzugten Ausführungform ist das Trägerelement als Stellglied ausgeführt. Dies hat den Vorteil, dass der Stellweg des Federbeinspanners vergrößert wird, denn die Stellwege der stationären Stellgliedes und des transportablen (mobilen) Federbeinspanners addieren sich.In a preferred embodiment, the carrier element is designed as an actuator. This has the advantage that the travel of the spring stretcher is increased because the travel of the stationary actuator and the portable (mobile) strut tensioners add up.

In einer bevorzugten Weiterbildung hält der Adapter den transportabeln Federspanner schwenkbar am Trägerelement, so dass die am Federspanner gehaltene Kopfplatte weggeschwenkt werden kann, um Platz zur Entnahme der Schraubenfeder oder des Stoßdämpfers zu schaffen.In a preferred embodiment, the adapter holds the transportable spring tensioner pivotally on the carrier element, so that the top plate held on the spring tensioner can be pivoted away to create space for removal of the coil spring or the shock absorber.

In einer besonders bevorzugten Ausführungsform ist zwischen dem Trägerelement und der Federbeinaufnahme, bzw. zwischen dem Stellglied und der Federbeinaufnahme, eine Justiervorrichtung vorgesehen, über die das Federbein in Richtung der X-Achse bewegbar ist und/oder über die das Federbein um die X-Achse schwenkbar ist. Insbesondere bei unsymetrischen Schraubenfedern kommt es vor, dass nach dem Trennen des Kolbens von der Schraubenfeder entweder der Kolben oder die Schraubenfeder oder beide ihre angestammte Position verlassen und nicht mehr mit der Öffnung in der Kopfplatte fluchten. Beim Zusammenbau des Federbeines kann der Monteur zwar die Schraubenfeder in die gewünschte Position überführen, weil diese gut zugänglich ist, aber der innerhalb der Schraubenfeder liegende Kolben ist schwer zugänglich, insbesondere wenn dieser durch die Rückholfeder der neuen Generation in den Zylinder eingezogen wurde. In dieser Situation kann der Kolben in einfacher Weise mit der Justiervorrichtung in die gewünschte Position gebracht werden, um das Federbein in einfacher Weise zusammenbauen zu können.In a particularly preferred embodiment, between the support member and the strut mount, or between the actuator and the strut mount, an adjustment device is provided, via which the strut in the direction of the X-axis is movable and / or via which the strut about the X-axis is pivotable. In particular, in the case of asymmetrical helical springs, it can happen that, after the piston has been separated from the helical spring, either the piston or the helical spring or both leave their original position and are no longer aligned with the opening in the head plate. While assembling the strut, the installer may indeed convert the coil spring into the desired position, because it is easily accessible, but the piston located inside the coil spring is difficult to access, especially when it has been pulled into the cylinder by the return spring of the new generation. In this situation, the piston can easily be brought with the adjusting device in the desired position to assemble the strut in a simple manner.

Dabei hat es sich als vorteilhaft erwiesen, die Federbeinaufnahme über eine Zylinder-Kolben Führung am Stellglied zu befestigen, weil diese Zylinder-Kolben Führung eine axiale Verschiebung erlaubt und mit wenigen Bauteilen auskommt. Ein weiterer Vorteil besteht darin, dass diese Zylinder-Kolben-Führung neben der axialen Verschiebung auch ein Verschwenken zulässt, so dass ausreichende Verstellmöglichkeiten realisiert sind.It has proved to be advantageous to attach the strut mount via a cylinder-piston guide on the actuator, because this cylinder-piston guide allows axial displacement and manages with few components. Another advantage is that this cylinder-piston guide in addition to the axial displacement also allows pivoting, so that sufficient adjustment options are realized.

In einer bevorzugten Weiterbildung erfolgt die Justierung des Federbeines über einen an der Federbeinaufnahme angebrachten Rahmen, der das Stellglied umgreift und mit einer Stellschraube ausgestattet ist. Hiermit ist mit einfachsten konstruktiven Mitteln eine Verstellmöglichkeit realisiert, die sehr kostengünstig hergestellt werden kann und mit der ein präzises Verstellen des Federbeines möglich ist.In a preferred embodiment, the adjustment of the strut via a mounted on the strut mount frame, which engages around the actuator and is equipped with a set screw. Hereby an adjustment is realized with the simplest structural means, which can be made very inexpensively and with a precise adjustment of the strut is possible.

Ergänzt man den Rahmen mit einer oder zwei sich am Werkbankhalter abstossenden Begrenzungsschrauben, so kann dass Federbein auch präzise um die X-Achse verschwenkt werden, ohne das die Herstellungskosten signifikant steigen.If the frame is supplemented with one or two limiting screws repelling the workbench holder, then the strut can also be pivoted precisely about the X-axis without the production costs rising significantly.

Weitere Vorteile des erfindungsgemäßen Federbeinspanners ergeben sich aus der beigefügten Zeichnung und den nachstehend beschriebenen Ausführungsformen. Ebenso können die vorstehend genannten und die noch weiter ausgeführten Merkmale erfindungsgemäß jeweils einzeln oder in beliebigen Kombinationen miteinander verwendet werden. Die erwähnten Ausführungsformen sind nicht als abschließende Aufzählung zu verstehen, sondern haben vielmehr beispielhaften Charakter. Es zeigen:

Fig. 1
eine perspektivische Ansicht eines aus dem Stand der Technik bekannten transportablen Federspanners;
Fig. 2
eine Frontansicht einer ersten Ausführungsform eines erfindungsgemäßen Federbeinspanners;
Fig. 3
eine Frontansicht des Federbeinspanners gemäß Fig. 2 in explosionsartiger Darstellung;
Fig.3a
eine Detailansicht des Federbeinspanners gemäß Fig. 2 entlang Linie IIIa - IIIa in Fig. 3;
Fig. 4
eine Seitenansicht des Federbeinspanners gemäß Fig. 2 mit einem darin eingesetzen Federbein;
Fig. 5
eine Frontansicht des Federbeinspanners gemäß Fig. 4 mit einem darin eingesetzten Federbein;
Fig. 6
eine Detailvergrößerung des Federbeinspanners gemäß Fig.4, entlang Linie VI in Fig. 4;
Fig. 7
eine Detailvergrößerung des Federbeinspanners gemäß Fig. 4, entlang Linie VII in Fig. 4;
Fig. 8
eine Frontansicht einer zweiten Ausführungsform eines erfindungsgemäßen Federbeinspanners;
Fig. 9
eine Frontansicht des Federbeinspanners gemäß Fig. 8 in explosionsartiger Darstellung;
Fig.9a
eine Detailansicht des Federbeinspanners gemäß Fig. 8 entlang Linie IXa - IXa in Fig. 9;
Fig. 10
eine Seitenansicht des Federbeinspanners gemäß Fig. 8 mit einem darin eingesetzen Federbein;
Fig. 11
eine Frontansicht des Federbeinspanners gemäß Fig. 10 mit einem darin eingesetzten Federbein;
Fig. 12
eine Detailvergrößerung des Federbeinspanners gemäß Fig.10, entlang Linie XII in Fig. 10;
Fig. 13
eine Detailvergrößerung des Federbeinspanners gemäß Fig. 10, entlang Linie XIII in Fig. 10;
Fig. 14
eine Frontansicht einer dritten Ausführungsform eines erfindungsgemäßen Federbeinspanners in explosionsartiger Darstellung;
Fig. 15
eine Seitenansicht des Federbeinspanners gemäß Fig. 14 mit einem eingesetzten Federbein.
Further advantages of the spring strut according to the invention will become apparent from the accompanying drawings and the embodiments described below. Likewise, according to the invention, the above-mentioned features and those which are still further developed can be used individually or in any desired combinations with one another. The mentioned embodiments are not to be understood as an exhaustive list, but rather have exemplary character. Show it:
Fig. 1
a perspective view of a known from the prior art transportable spring compressor;
Fig. 2
a front view of a first embodiment of a strut tensioner according to the invention;
Fig. 3
a front view of the suspension strut according to Fig. 2 in an explosive representation;
3a
a detailed view of the strut tensioner according to Fig. 2 along line IIIa - IIIa in Fig. 3 ;
Fig. 4
a side view of the spring strut according to Fig. 2 with a strut inserted therein;
Fig. 5
a front view of the suspension strut according to Fig. 4 with a strut inserted therein;
Fig. 6
an enlarged detail of the suspension strut according to Figure 4 , along line VI in Fig. 4 ;
Fig. 7
an enlarged detail of the suspension strut according to Fig. 4 , along line VII in Fig. 4 ;
Fig. 8
a front view of a second embodiment of a strut tensioner according to the invention;
Fig. 9
a front view of the suspension strut according to Fig. 8 in an explosive representation;
9a
a detailed view of the strut tensioner according to Fig. 8 along line IXa - IXa in Fig. 9 ;
Fig. 10
a side view of the spring strut according to Fig. 8 with a strut inserted therein;
Fig. 11
a front view of the suspension strut according to Fig. 10 with a strut inserted therein;
Fig. 12
an enlarged detail of the suspension strut according to Figure 10 , along line XII in Fig. 10 ;
Fig. 13
an enlarged detail of the suspension strut according to Fig. 10 , along line XIII in Fig. 10 ;
Fig. 14
a front view of a third embodiment of a strut tensioner according to the invention in an exploded view;
Fig. 15
a side view of the spring strut according to Fig. 14 with a strut inserted.

Fig. 1 zeigt einen transportablen Federbeinspanner 1 mit einem teleskopartig aufgebauten Stellglied 2, umfassend ein Außenrohr 4 und ein dort hinein einfahrbares Innenrohr 6. Das Außenrohr 4 und das Innenrohr 6 sind über eine hier nicht näher dargestellte innenliegende Spindel derart miteinander verbunden, dass beim Betätigen eines Drehknopfes 8 die Spindel das Innenrohr 6 relativ gegenüber dem Außenrohr 4 bewegt. Am Außenrohr 4 und auch am Innenrohr 6 ist je eine Federhalteraufnahme 10 zur Aufnahme je eines Federhalters 12 vorgesehen. Fig. 1 shows a transportable strut tensioner 1 with a telescopically constructed actuator 2, comprising an outer tube 4 and there in retractable inner tube 6. The outer tube 4 and the inner tube 6 are connected via an internal spindle not shown here in such a way that upon actuation of a rotary knob. 8 the spindle moves the inner tube 6 relative to the outer tube 4. On the outer tube 4 and also on the inner tube 6, a respective spring holder receptacle 10 for receiving a respective spring holder 12 is provided.

Diese Federhalter 12 greifen in das Innere einer Schraubenfeder 14 ein, sodass durch Betätigen des Drehknopfes 8 die beiden Federhalter 12 aufeinander zubewegt werden und sodass dabei die Schraubenfeder 14 entsprechend gespannt wird.These spring holder 12 engage in the interior of a coil spring 14 so that by pressing the knob 8, the two spring holder 12 are moved toward each other and so that while the coil spring 14 is tensioned accordingly.

Die Federhalteraufnahme 10 umfasst eine umlaufende Schulter 16, ein Gewinde 17 und eine Gewindehülse 18, wobei der Federhalter 12 zwischen Schulter 16 und Gewindehülse 18 in der Federhalteraufnahme 10 eingesetzt wird, bevor die gewindehülse 18 in das Gewinde 17 eingeschraubt wird und dabei den Federhalter 12 verspannt.The spring holder receptacle 10 comprises a circumferential shoulder 16, a thread 17 and a threaded sleeve 18, wherein the spring holder 12 between the shoulder 16 and threaded sleeve 18 is inserted into the spring holder receptacle 10 before the threaded sleeve 18 is screwed into the thread 17 while the spring holder 12 clamped ,

Dieser Federspanner 1 ist transportabel und geeignet, die Schraubenfeder 14 eines Federbeines zu spannen, selbst wenn die Schraubenfeder 14 noch zusammen mit dem Federbein am Fahrzeug montiert ist.This spring compressor 1 is portable and suitable to tension the coil spring 14 of a strut, even if the coil spring 14 is still mounted together with the strut on the vehicle.

Bei der neuesten Generation von Federbeinen ist am Kolben des Stoßdämpfers eine Rückholfeder montiert, welche den Kolben in den Zylinder des Stoßdämpfers zurückholt, sobald dieser entlastet wird. Zur Demontage eines Federbeins bedeutet dies, dass die Schraubenfeder 14 weiter als bisher zusammengedrückt werden muss, damit der nunmehr in den Zylinder rückgeholte Kolben zwecks Montage im Federbein erreicht werden kann. Ein derart extremes Zusammendrücken der Schraubenfeder 14 ist mit dem in Fig. 1 dargestellten Federspanner nicht immer möglich, insbesondere weil die Federhalter 12 in die Schraubenfeder 14 eingreifen und somit nur eine begrenzte Anzahl von Federgängen nutzbar ist.In the latest generation of struts, a return spring is mounted on the piston of the shock absorber, which returns the piston to the cylinder of the shock absorber as soon as it is relieved. To dismantle a strut, this means that the coil spring 14 must be further compressed than before, so that the now reclaimed into the cylinder piston for assembly in the strut can be achieved. Such extreme compression of the coil spring 14 is with the in Fig. 1 shown spring compressor is not always possible, especially because the spring holder 12 engage in the coil spring 14 and thus only a limited number of spring gears is available.

In den Figuren 1 bis 7 ist eine erste Ausführungsform eines erfindungsgemäßen Federbeinspanners 100 dargestellt. Dieser Federbeinspanner 100 besitzt einen Werkbankhalter 120, sodass der gesamte Federbeinspanner 100 an einer hier nicht dargestellten Werkbank montiert werden kann. Hierdurch ist es möglich, dass Federbein in einer für den Monteur angenehmen Arbeitshaltung an einer Werkbank auseinander- bzw. zusammenzubauen.In the FIGS. 1 to 7 a first embodiment of a strut tensioner 100 according to the invention is shown. This strut tensioner 100 has a workbench holder 120, so that the entire strut tensioner 100 can be mounted on a workbench, not shown here. This makes it possible that strut in one for the fitter disassemble and assemble pleasant work posture on a workbench.

Der Federbeinspanner 100 umfasst weiterhin ein vertikal ausgerichtetes Stellglied 122, an dem radial abstehend eine Justiereinrichtung 124 angebracht ist, an die sich eine Federbeinaufnahme 126 anschließt. Die Federbeinaufnahme 126 umgreift einen Zylinder 128 eines Federbeins 130 und hält somit das Federbein 130 sicher und rutschfest am Federbeinspanner 100.The strut tensioner 100 further comprises a vertically oriented actuator 122, on the radially projecting an adjusting device 124 is attached to which a strut mount 126 connects. The strut mount 126 engages around a cylinder 128 of a shock absorber 130 and thus keeps the strut 130 securely and non-slip on the strut tensioner 100.

In der hier dargestellten Ausführungsform umfasst die Federbeinaufnahme 126 zwei voneinander getrennte Halbschalen 132, die über eine rechte und eine linke Halteschraube 134 zusammengehalten werden und dabei den Zylinder 128 am Federbeinspanner 100 festklemmen.In the embodiment illustrated here, the strut mount 126 includes two separate half shells 132 that are held together by right and left retaining bolts 134, thereby clamping the cylinder 128 to the strut tensioner 100.

Das obere, freie Ende des Stellgliedes 122 ist als Adapteraufnahme 136 ausgebildet, an der ein korrespondierender Adapter 138 anbringbar ist. In diesen Adapter 138 kann ein an sich bekannter Federspanner 1 gemäß Fig. 1 mittels seiner am Innenrohr 6 gehaltenen Federhalteraufnahme 10 eingesetzt werden, um eine Verlängerung des Stellgliedes und ggf. eine Vergrößerung des Stellweges zu erreichen.The upper, free end of the actuator 122 is formed as an adapter receptacle 136 to which a corresponding adapter 138 can be attached. In this adapter 138 may be a per se known spring compressor 1 according to Fig. 1 be used by means of its held on the inner tube 6 spring retainer 10 to achieve an extension of the actuator and possibly an increase in the travel.

Hierzu ist die Adapteraufnahme 136 als Gewinde ausgeführt und besitzt an einer Frontseite eine Bohrung 140 zur Aufnahme eines Steckbolzens 142. Der Adapter 138 besitzt eine hier nicht näher dargestelltes Innengewinde, mit dem der Adapter 138 auf die Adapteraufnahme 136 aufgeschraubt werden kann. Dabei wird der Adapter 138 so weit aufgeschraubt, dass der Steckbolzen 142 durch eine Öffnung 144 im Adapter in die Bohrung 140 gelangen kann.For this purpose, the adapter receptacle 136 is designed as a thread and has on a front side a bore 140 for receiving a plug pin 142. The adapter 138 has an unspecified here internal thread, with which the adapter 138 can be screwed onto the adapter receptacle 136. In this case, the adapter 138 is screwed so far that the locking pin 142 can pass through an opening 144 in the adapter into the bore 140.

Der mittels des Innengewindes auf dem Stellglied 122 angebrachte Adapter 138 ist grundsätzlich zusammen mit dem im Adapter 138 gehaltenen Federspanner 1 drehbar um seine Längsachse und wird durch den Steckbolzen 142 arretiert. Dies hat den Vorteil, dass der Federspanner 1 bei Bedarf zum Beispiel um 90° weggeschwenkt weden kann, um die Schraubenfeder 14 leichter vom Federbein 130 zu entfernen. Hierzu braucht lediglich der Steckbolzen 142 gezogen werden.The attached by means of the internal thread on the actuator 122 adapter 138 is generally rotatable about its longitudinal axis together with the spring held in the adapter 138 and about its longitudinal axis and is locked by the locking pin 142. This has the advantage that the spring compressor 1 can be pivoted away, for example, by 90 °, if necessary, in order to more easily remove the coil spring 14 from the shock absorber 130. For this purpose, only the locking pin 142 needs to be pulled.

Der Adapter 138 ist nach Oben und zur Frontseite hin offen ausgebildet und besitzt eine Haltekante 146 unterhalb derer eine Schulteraufnahme 148 ausgebildet ist. Diese Schulteraufnahme 148 ist korrespondierend zur Schulter 16 der Federhalteraufnahme 10 ausgebildet. Der Federspanner 1 wird mit seiner Federhalteraufnahme 10, insbesondere mit seiner breiten Schulter 16 in die Schulteraufnahme 148 eingeschoben und dann wird die Gewindehülse 18 des Federspanners 1 in das Gewinde 17 eingeschraubt, um die Schulter 16 gegen Haltekante 146 zu verspannen, so dass der Federspanner 1 im Adapter 138 fest und wackelfrei gehalten wird.The adapter 138 is open towards the top and towards the front and has a retaining edge 146 below which a shoulder receptacle 148 is formed. This shoulder receptacle 148 is formed corresponding to the shoulder 16 of the spring retainer 10. The spring tensioner 1 is inserted with its spring holder receptacle 10, in particular with its wide shoulder 16 in the shoulder receptacle 148 and then the threaded sleeve 18 of the spring tensioner 1 is screwed into the thread 17 to clamp the shoulder 16 against retaining edge 146, so that the spring tensioner. 1 is held firmly and wobble-free in the adapter 138.

An der am Außenrohr 4 des Federspanners 1 angebrachten Federhalteraufnahme 10 kann dann entweder ein aus dem Stand der Technik bekannter Federhalter 12 oder eine Kopfplatte 152 angebracht werden. In der in den Figuren 2 bis 7 dargestellten ersten Ausführungsform ist in die Federhalteraufnahme 16 eine Kopfplatte 152 eingesetzt, welche von oben auf das Federbein 130 einwirkt, sobald die Kopfplatte 152 durch Betätigen entweder des Stellgliedes 2 des Federspanners oder des Stellgliedes 122 des Federbeinspanners gegen die Federkraft der Schraubenfeder 14 bewegt wird.At the attached to the outer tube 4 of the spring compressor 1 spring holder holder 10 can then be either a known from the prior art spring holder 12 or a top plate 152 are attached. In the in the FIGS. 2 to 7 shown first embodiment, a head plate 152 is inserted into the spring holder receptacle 16, which acts from above on the strut 130 as soon as the top plate 152 is moved by operating either the actuator 2 of the spring compressor or the actuator 122 of the strut tensioner against the spring force of the coil spring 14.

Die Kopfplatte 152 besitzt eine mittige Öffnung 154 zur Aufnahme des freien Endes des Federbeines 130. Gleichzeitig ist an der Kopfplatte 152 ein in Richtung des Federbeines 130 ausgerichteter umlaufender Sicherheitssteg 156 vorgesehen, an den das freie Ende des Federbeines 130 anstößt, sollte es einmal auf der Öffnung 154 herausgelangen. Hierdurch wird ein unbeabsichtigtes Herausfallen des Federbeines 130 verhindert.The top plate 152 has a central opening 154 for receiving the free end of the strut 130. At the same time, a circumferential safety bar aligned with the strut 130 is provided on the top plate 152 156 provided, which abuts the free end of the strut 130, it should get out once on the opening 154. As a result, unintentional falling out of the shock absorber 130 is prevented.

Mit dem Einsatz des stationären Stellgliedes 122 in dem erfindungsgemäßen Federbeinspanner und mit dem Einsatz des transportablen Federspanners 1 wird ein sehr großer Stellweg erreicht, sodass die Schraubenfeder 14 des Federbeines 130 in ausreichender Weise zusammengedrückt werden kann, auch wenn eine hier nicht dargestellte Rückholfeder den Kolben 158 in den Zylinder 128 einholt.With the use of the stationary actuator 122 in the strut tensioner according to the invention and with the use of the transportable spring compressor 1, a very large travel is achieved, so that the coil spring 14 of the strut 130 can be sufficiently compressed, even if a return spring, not shown here, the piston 158th in the cylinder 128 catches.

In einer anderen, hier nicht dargestellten Ausführungsform, kann anstelle der Kopfplatte 152 auch ein Federhalter 12 eingesetzt werden. Dieser greift dann in die Schraubenfeder 14 ein. Zwar reduziert sich in diesem Falle der theoretisch mögliche Stellweg, dieser ist in vielen Fällen jedoch immer noch ausreichend.In another, not shown embodiment, instead of the head plate 152 and a spring holder 12 can be used. This then engages in the coil spring 14. Although in this case the theoretically possible travel is reduced, this is still sufficient in many cases.

Bei einer Vielzahl der in den bekannten Fahrzeugen verbauten Federbeinen ist die Schraubenfeder nicht symmetrisch zur Achse des Federbeines ausgebildet sondern weist unregelmäßige Formen auf. Wenn bei einer derart unregelmäßigen Schraubenfeder der Kolben des Stoßdämpfers von der Schraubenfeder entkoppelt ist kann es vorkommen, dass sich die Schraubenfeder gegenüber dem Kolben versetzt, sodass beide nicht mehr koaxial ausgerichtet sind. Beim Zusammenbau eines derartigen Federbeines besteht dann die Schwierigkeit, dass beim Zusammendrücken der Schraubenfeder das freie Ende des Kolbens nicht mehr die Öffnung der Kopfplatte trifft, sodass ein Zusammenschrauben des Federbeins nur schwer möglich ist.In a plurality of the shock absorbers installed in the known vehicles, the coil spring is not formed symmetrically to the axis of the shock absorber but has irregular shapes. If, in such an irregular coil spring, the piston of the shock absorber is decoupled from the coil spring, it may happen that the coil spring is offset from the piston, so that both are no longer aligned coaxially. When assembling such a strut then there is the difficulty that when squeezing the coil spring, the free end of the piston no longer hits the opening of the top plate, so that a screwing together of the shock absorber is difficult.

Um die Montage zu erleichtern, ist zwischen dem Stellglied 122 und der Federbeinaufnahme 126 die Justiereinrichtung 124 vorgesehen. Legt man fiktiv ein Koordinatensystem auf den erfindungsgemäßen Federbeinspanner, so ist das Stellglied 122 in Richtung der Y-Achse ausgelegt, während die Justiereinrichtung 124 in Richtung X-Achse wirkt.In order to facilitate the assembly, the adjusting device 124 is provided between the actuator 122 and the strut mount 126. One puts Fictitious a coordinate system on the strut tensioner according to the invention, the actuator 122 is designed in the direction of the Y-axis, while the adjusting device 124 acts in the X-axis direction.

Die Justiereinrichtung 124 umfasst einen am Stellglied 122 angebrachten Hohlzylinder 160, in dem ein Justierkolben 162 passgenau geführt ist. An diesem Justierkolben 162 ist die Federbeinaufnahme 126 befestigt. An dieser Federbeinaufnahme 126 ist darüber hinaus ein Rahmen 164 angebracht, welcher den Hohlzylinder 160 und das Stellglied 122 umgreift ohne diese zu berühren.The adjusting device 124 comprises a hollow cylinder 160 mounted on the actuator 122, in which an adjusting piston 162 is guided with a precise fit. At this adjusting piston 162, the strut mount 126 is attached. At this strut mount 126, a frame 164 is also attached, which surrounds the hollow cylinder 160 and the actuator 122 without touching them.

Auf der anderen Seite des Stellgliedes 122 befindet sich eine Stellschraube 166, die nahe dem Kopfende über ein Stellgewinde im Rahmen 164 gehalten ist, während das freie Ende der Stellschraube 166 ist rotierbar und axial unverschieblich am Stellglied 122 gehalten ist. Hierzu ist am Stellglied 122 ein U-förmiger Haltesteg 168 angebracht, der von zwei auf der Stellschraube 166 sitzenden Axiallagern 170 umgriffen ist, wobei die Axiallager 170 von einer auf der Stellschraube 166 befindlichen Kontermutter 172 gegen den Haltesteg 168 gedrückt werden, um die Stellschraube leichtgängig rotierbar und dennoch axial unverschieblich zu halten.On the other side of the actuator 122 is an adjusting screw 166 which is held near the head end via an adjusting thread in the frame 164, while the free end of the adjusting screw 166 is rotatable and axially immovably held on the actuator 122. For this purpose, a U-shaped holding web 168 is attached to the actuator 122, which is encompassed by two seated on the screw 166 thrust bearings 170, wherein the thrust bearing 170 are pressed by a located on the adjusting screw 166 lock nut 172 against the retaining web 168 to the set screw smoothly rotatable and yet to hold axially immovable.

Die Stellschraube 166 ist axial fluchtend zur Achse des Hohlzylinders 160 bzw. zur Achse des Justierkolbens 162 angeordnet.The adjusting screw 166 is arranged axially in alignment with the axis of the hollow cylinder 160 or with the axis of the adjusting piston 162.

Weil die Stellschraube 166 axial unverschieblich aber rotierbar am Haltesteg 168 gehalten ist, wird beim Drehen der Stellschraube 166 über das im Rahmen 164 befindliche Gewinde der Rahmen 164 zusammen mit der Federbeinaufnahme 126 und dem darin gehaltenen Federbein 130 und dem Justierkolben 162 in Richtung der X-Achse bewegt. Dabei wird der Justierkolben 62 in den Hohlzylinder 160 hinein bzw. herausbewegt. Es versteht sich, dass der Justierkolben 162 stets so weit im Hohlzylinder 160 verbleibt, dass das Federbein 130 zuverlässig am Stellglied 122 gehalten wird.Because the adjusting screw 166 is held axially immovable but rotatable on the holding web 168, when the adjusting screw 166 is rotated via the thread located in the frame 164, the frame 164 together with the strut mount 126 and the strut 130 and the adjusting piston 162 held therein are moved in the direction of the X-axis. Axis moves. In this case, the adjusting piston 62 is moved into or out of the hollow cylinder 160. It understands itself that the adjusting piston 162 always remains so far in the hollow cylinder 160 that the strut 130 is reliably held on the actuator 122.

Der Rahmen 164 ist dabei so weit vom Stellglied 122 beabstandet, dass auch ein Verschwenken des Federbeins 130 um die X-Achse herum möglich ist. Dabei verschwenkt sich der Rahmen 164 zusammen mit dem Justierkolben 162 und dem Federbein 130 um die Achse des Hohlzylinders 160, welches gleichzeitig auch die Achse der Stellschraube 166 bzw. des Justierkolbens 162 ist. Am rechten und linken Rand des Rahmens 164 ist je eine Begrenzungsschraube 174 vorgesehen, welche das Verschwenken begrenzt. Dabei stößt die Begrenzungsschraube 174 am Werkbankhalter 120 an. Umgekehrt ist es natürlich auch möglich, durch Anziehen der Begrenzungsschraube 174 das Federbein 130 präzise und in kleinen Schritten um die X-Achse zu schwenken.The frame 164 is so far away from the actuator 122, that a pivoting of the strut 130 about the X-axis around is possible. In this case, the frame 164 pivots together with the adjusting piston 162 and the strut 130 about the axis of the hollow cylinder 160, which is also the axis of the adjusting screw 166 and the adjusting piston 162 at the same time. On the right and left edge of the frame 164, a respective limiting screw 174 is provided which limits the pivoting. The limit screw 174 abuts the work bench holder 120. Conversely, it is of course also possible by tightening the limit screw 174, the strut 130 to pivot precisely and in small steps about the X-axis.

Sowohl durch die Bewegung in Richtung der X-Achse, als auch die Bewegung um die X-Achse herum ist es möglich, den Kolben 158 des Federbeins 130 so auszurichten, dass dieser, während die Schraubenfeder 14 zusammen gedrückt ist, in die Öffnung 154 der Kopfplatte 152 gelangt.Both by the movement in the direction of the X-axis, as well as the movement about the X-axis, it is possible to align the piston 158 of the strut 130 so that this, while the coil spring 14 is pressed together, into the opening 154 of Head plate 152 passes.

Die in den Figuren 8 bis 14 dargestellte zweite Ausführungsform eines erfindungsgemäßen Federbeinspanners unterscheidet sich von der in den Figuren 2 bis 7 dargestellten ersten Ausführungsform lediglich dadurch, dass das Stellglied (122) ersetzt wird durch ein Trägerelement 222. Dieses Trägerelement 222 ist ein einfaches Rohr, welches nicht verstellt oder verlängert werden kann. Alles andere bleibt unverändert. Das zuvor für die erste Ausführungsform bezüglich der Fig. 2 bis 7 gesagte gilt für die in den Figs. 8 bis 13 gezeigte zweite Ausführungsform in gleicher Weise mit der Massgabe, dass das Stellglied (122) durch das rohrähnliche Trägerelement (222) ersetzt wurde.The in the FIGS. 8 to 14 illustrated second embodiment of a strut tensioner according to the invention differs from that in the FIGS. 2 to 7 illustrated first embodiment only in that the actuator (122) is replaced by a support member 222. This support member 222 is a simple tube, which can not be adjusted or extended. Everything else remains unchanged. The above for the first embodiment with respect to Fig. 2 to 7 said applies to the in the Figs. 8 to 13 shown second embodiment in the same way with the proviso that the actuator (122) has been replaced by the tube-like support member (222).

Somit ist diese zweite Ausführungsform kostengünstiger in der Herstellung, verfügt allerdings über einen kürzeren Stellweg. Für viele Federbeine ist dieser kürzere Stellweg aber dennoch ausreichend.Thus, this second embodiment is less expensive to manufacture, but has a shorter travel. For many struts this shorter travel is still sufficient.

Die in den Figs 14 und 15 dargestellte dritte Ausführungsform unterscheidet sich von der in den Figuren 2 bis 7 dargestellten ersten Ausführungsform lediglich dadurch, dass an der Adapteraufnahme 136 kein Adapter (138) zur Aufnahme eines Federspanners (1), sondern ein Federhalteradapter 338 angebracht ist, an dem die Kopfplatte 152 oder der Federhalter 12 direkt anbringbar ist. Dieser Federhalteradapter 338 ist äußerlich analog zur Federhalteraufnahme 10 ausgebildet, damit der Federhalter 12 oder die Kopfplatte 152 daran in an sich bekannter Weise befestigt werden können. Im inneren ist der Federhalteradapter 338 analog zum Adapter 138 ausgebildet, damit der Federhalteradapter 338 wie der Adapter 138 auch an der Adapteraufnahme 136 des Stellgliedes 122 angebracht werden kann. Ansonsten sind beide Ausführungsformen baugleich, weshalb das zu der ersten Ausführungsform gemäß den Fig. 2 bis 7 gesagte in analoger Weise auch für diese dritte Ausführungsform gemäß den Figs. 14 und 15 gilt.The in the Figs and 15 illustrated third embodiment differs from that in the FIGS. 2 to 7 illustrated first embodiment only in that on the adapter receptacle 136 no adapter (138) for receiving a spring tensioner (1), but a spring holder adapter 338 is attached to which the top plate 152 or the spring holder 12 is directly attachable. This spring holder adapter 338 is formed externally analogous to the spring holder receptacle 10, so that the spring holder 12 or the top plate 152 can be attached thereto in a conventional manner. Internally, the spring holder adapter 338 is designed analogously to the adapter 138 so that the spring holder adapter 338, like the adapter 138, can also be attached to the adapter receiver 136 of the actuator 122. Otherwise, both embodiments are identical, which is why to the first embodiment according to the Fig. 2 to 7 said in an analogous manner for this third embodiment according to the Figs. 14 and 15 applies.

Auch hierdurch reduziert sich der Stellweg des erfindungsgemäßen Federbeinspanners, jedoch ist dieser in vielen Fällen ausreichend.This also reduces the travel of the spring strut according to the invention, but this is sufficient in many cases.

Claims (10)

Federbeinspanner zum Austausch einer Feder oder eines Stoßdämpfers eines Federbeines eines Kraftfahrzeuges, mit einem Trägerelement (122, 222), mit einem Werkbankhalter (120) zur Anbringung des Federbeinspanners (100) an einer Werkbank und mit einer am Trägerelement (122, 222) angebrachten Federbeinaufnahme (126),
dadurch gekennzeichnet,
dass an dem Trägerelement (122, 222) ein Adapter (138) zur Anbringung eines transportablen Federspanners (1) vorgesehen ist, wobei am Federspanner (1) ein Federhalter (12) oder eine Kopfplatte (152) anbringbar ist.
Strut tensioner for replacing a spring or a shock absorber of a strut of a motor vehicle, with a support member (122, 222), with a workbench holder (120) for attaching the strut tensioner (100) to a workbench and with a on the support element (122, 222) mounted strut mount (126)
characterized,
in that an adapter (138) for mounting a transportable spring tensioner (1) is provided on the carrier element (122, 222), wherein a spring holder (12) or a top plate (152) can be attached to the spring tensioner (1).
Federbeinspanner nach Anspruch 1,
dadurch gekennzeichnet,
dass das Trägerelement als Stellglied (122) ausgebildet ist.
Strut clamp according to claim 1,
characterized,
that the carrier element is designed as an actuator (122).
Federbeinspanner nach einem der vorangehenden Ansprüche,
dadurch gekennzeichnet,
dass der Adapter (138) den transportablen Federspanner (1) axial fluchtend am Trägerelement (122, 222) hält.
Strut clamp according to one of the preceding claims,
characterized,
in that the adapter (138) holds the transportable spring tensioner (1) in axial alignment with the carrier element (122, 222).
Federbeinspanner nach einem der vorangehenden Ansprüche,
dadurch gekennzeichnet,
dass der Adapter (138) den transportablen Federspanner (1) um die Achse des Trägerelementes (122, 222) schwenkbar am Stellglied (122) hält.
Strut clamp according to one of the preceding claims,
characterized,
that the adapter (138) the portable spring tensioner (1) about the axis of the support element (122, 222) pivotally mounted on the actuator (122) holds.
Federbeinspanner zum Austausch einer Feder oder eines Stoßdämpfers eines Federbeines eines Kraftfahrzeuges, mit einem Stellglied (122), mit einem Werkbankhalter (120) zur Anbringung des Federbeinspanners (100) an einer Werkbank und mit einer am Stellglied (122) angebrachten Federbeinaufnahme (126), wobei am Stellglied (122) ein Federhalter (12) oder eine Kopfplatte (151) anbringbar, insbesondere nach einem der vorangehenden Ansprüche,
dadurch gekennzeichnet,
dass zwischen der Federbeinaufnahme (126) und dem Stellglied (122) eine Justiereinrichtung (124) vorgesehen ist, mittels der das Federbein (130) in Richtung einer X-Achse bewegbar ist und/oder um die X-Achse verschwenkbar ist.
Strut tensioner for replacing a spring or a shock absorber of a suspension strut of a motor vehicle, with an actuator (122), with a workbench holder (120) for attaching the strut tensioner (100) to a workbench and with a strut mount (126) attached to the actuator (122), wherein a spring holder (12) or a top plate (151) can be attached to the actuator (122), in particular according to one of the preceding claims,
characterized,
that an adjusting device (124) is provided between the spring strut mount (126) and the actuator (122) by means of the strut (130) is movable in an X-axis and / or about the X axis can be pivoted.
Federbeinspanner nach Anspruch 5,
dadurch gekennzeichnet,
dass die Justiereinrichtung (124) einen in Richtung der X-Achse ausgerichteten Justierkolben (162) aufweist, der in einem am Stellglied (122) angebrachten und ebenfalls in Richtung der X-Achse ausgerichteten Hohlzylinder (160) geführt ist.
Strut clamp according to claim 5,
characterized,
in that the adjusting device (124) has an adjusting piston (162) aligned in the direction of the X axis, which is guided in a hollow cylinder (160) which is mounted on the actuator (122) and is likewise aligned in the direction of the X axis.
Federbeinspanner nach einem der Ansprüche 5 oder 6,
dadurch gekennzeichnet,
dass die Justiervorrichtung (124) einen das Stellglied (122) umgreifenden Rahmen (164) aufweist, der mit der Federbeinaufnahme (126) verbunden ist und der eine vorzugsweise in Richtung der X-Achse auf das Stellglied (122) wirkende Stellschraube (166) aufweist.
Strut clamp according to one of claims 5 or 6,
characterized,
in that the adjusting device (124) has a frame (164) encompassing the actuator (122), which is connected to the strut mount (126) and which has an adjusting screw (166), preferably acting in the direction of the X axis on the actuator (122) ,
Federbeinspanner nach Anspruch 7,
dadurch gekennzeichnet,
dass die Stellschraube (166) in einem am Rahmen (164) integrierten Stellgewinde und in einem am Stellglied (122) angebrachten Haltesteg (168) rotierbar gehalten ist.
Strut clamp according to claim 7,
characterized,
that the adjusting screw (166) in a frame (164) integrated adjustment thread and, in a the actuator (122) attached to the retaining web (168) is rotatably supported.
Federbeinspanner nach einem der vorangehenden Ansprüche,
dadurch gekennzeichnet,
dass in der Kopfplatte (152) eine mittige Öffnung (154) ausgeführt ist und insbesondere dass die Kopfplatte (151) einen seitlichen Sicherheitssteg (156) aufweist, um ein Ausbrechen des Federbeines (1) zu verhindern.
Strut clamp according to one of the preceding claims,
characterized,
in that a central opening (154) is made in the head plate (152), and in particular that the head plate (151) has a lateral safety web (156) in order to prevent the strut (1) from breaking out.
Federbeinspanner nach einem der vorangehenden Ansprüche,
dadurch gekennzeichnet,
dass die Federbeinaufnahme (126) das Federbein (1) im Bereich des Zylinders (128) des Stoßdämpfers umgreift und festhält.
Strut clamp according to one of the preceding claims,
characterized,
that the strut mount (126) engages around and holds the strut (1) in the region of the cylinder (128) of the shock absorber.
EP15002330.7A 2014-09-16 2015-08-04 Suspension strut tensioner for exchanging a spring or a shock absorber of a suspension strut of a motor vehicle Active EP2998072B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014013449.0A DE102014013449B4 (en) 2014-09-16 2014-09-16 Strut tensioner for replacing a spring or a shock absorber of a strut of a motor vehicle

Publications (2)

Publication Number Publication Date
EP2998072A1 true EP2998072A1 (en) 2016-03-23
EP2998072B1 EP2998072B1 (en) 2020-09-09

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EP (1) EP2998072B1 (en)
DE (1) DE102014013449B4 (en)

Cited By (3)

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CN108644279A (en) * 2018-06-29 2018-10-12 中国船舶重工集团公司第七〇九研究所 For the detachable pressure applying means of damper
CN110315302A (en) * 2019-03-21 2019-10-11 广汽丰田汽车有限公司 Front overhang spring-compressed machine
CN111168630A (en) * 2020-02-19 2020-05-19 赖建凤 Adjustable volute spiral spring mounting device

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
CN112959042A (en) * 2021-02-07 2021-06-15 中国第一汽车股份有限公司 Spiral spring type shock absorber dismounting device based on press machine

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US20140077432A1 (en) * 2012-09-16 2014-03-20 Kevin J. Lee Work holding device for an archery bow
US20140232052A1 (en) * 2013-02-19 2014-08-21 Frank Mendez Multi-use adjustable vise

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US4732365A (en) * 1987-01-23 1988-03-22 Kloster Kenneth D Bench mounted spring compressor
DE202006007753U1 (en) 2006-01-23 2006-08-03 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
US20140077432A1 (en) * 2012-09-16 2014-03-20 Kevin J. Lee Work holding device for an archery bow
US20140232052A1 (en) * 2013-02-19 2014-08-21 Frank Mendez Multi-use adjustable vise

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108644279A (en) * 2018-06-29 2018-10-12 中国船舶重工集团公司第七〇九研究所 For the detachable pressure applying means of damper
CN108644279B (en) * 2018-06-29 2023-11-24 中国船舶重工集团公司第七一九研究所 Detachable pressure applying device for shock absorber
CN110315302A (en) * 2019-03-21 2019-10-11 广汽丰田汽车有限公司 Front overhang spring-compressed machine
CN111168630A (en) * 2020-02-19 2020-05-19 赖建凤 Adjustable volute spiral spring mounting device

Also Published As

Publication number Publication date
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EP2998072B1 (en) 2020-09-09
DE102014013449B4 (en) 2017-05-04

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