EP2998072B1 - Tendeur de jambe de force à ressort destiné au changement d'un ressort ou d'un amortisseur d'une jambe de force à ressort d'un véhicule automobile - Google Patents

Tendeur de jambe de force à ressort destiné au changement d'un ressort ou d'un amortisseur d'une jambe de force à ressort d'un véhicule automobile Download PDF

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Publication number
EP2998072B1
EP2998072B1 EP15002330.7A EP15002330A EP2998072B1 EP 2998072 B1 EP2998072 B1 EP 2998072B1 EP 15002330 A EP15002330 A EP 15002330A EP 2998072 B1 EP2998072 B1 EP 2998072B1
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EP
European Patent Office
Prior art keywords
suspension strut
spring
strut
actuator
tensioner
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.)
Active
Application number
EP15002330.7A
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German (de)
English (en)
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EP2998072A1 (fr
Inventor
Lothar Michel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ssw Schmack Spezialwerkzeuge & Co KG GmbH
Original Assignee
Ssw Schmack Spezialwerkzeuge & Co KG GmbH
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Publication of EP2998072A1 publication Critical patent/EP2998072A1/fr
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Classifications

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

Definitions

  • the present invention relates to a strut tensioner for replacing a spring or a shock absorber of a strut of a motor vehicle according to the preamble of one of claims 1 or 5.
  • suspension struts For damping individual wheels of a motor vehicle, suspension struts are used which comprise a spring preferably made of steel and a piston-cylinder shock absorber that is at least partially guided inside the spring.
  • the spring is firmly connected to the shock absorber, so that the properties of the spring are combined with the properties of the shock absorber to dampen the wheel.
  • FIG Fig. 1 An example of such a transportable spring compressor known from the prior art is shown in FIG Fig. 1 pictured. Two forged steel spring holders are attached to the spring tensioner and engage the spring to be tensioned at a distance from one another.
  • a return spring is provided on the piston of the shock absorber, which, when unloaded, brings the piston back into the piston further than before.
  • the spring of the new generation of struts has to be tensioned much more than before, i.e. the spring has to be compressed much more in order to bring the piston back into the cylinder to reach.
  • the spring geometry changes so much that the spring tensioner according to Fig. 1 there is a risk of a pen holder slipping off the spring.
  • a suspension strut tensioner which is attached to a workbench and has a substantially vertically oriented actuator on which a support element is provided in the upper area, a clamping device in the middle area and a support plate for holding the suspension strut in the lower area.
  • a number of movable grippers are provided on the upper support element, by means of which the support element can be brought into the position of the piston, the middle clamping device is held laterally adjustable and the lower support plate is adjustable in height.
  • a strut tensioner which is mounted on a workbench by means of a workbench holder.
  • a strut mount is also mounted on this workbench, in which the strut to be processed can be inserted.
  • the strut mount is held on the workbench so that it can pivot about its X axis.
  • the suspension strut tensioner is held removably with its standpipe in the workbench holder so that the suspension strut tensioner can be easily removed from the workbench when it is needed for other work.
  • the present invention is based on the object of creating a strut tensioner of the type mentioned at the outset, which can be manufactured inexpensively and is easy to use.
  • a suspension strut tensioner designed according to this technical teaching has the advantage that the suspension strut tensioner can be manufactured cost-effectively due to a manageable number of individual parts.
  • the suspension strut tensioner is used both in a stationary suspension strut tensioner according to the invention and as a mobile suspension strut tensioner.
  • the carrier element is designed as an actuator. This has the advantage that the travel of the strut tensioner is increased because the travel ranges of the stationary actuator and the transportable (mobile) strut tensioner add up.
  • the adapter holds the transportable spring tensioner pivotably on the carrier element, so that the head plate held on the spring tensioner can be pivoted away in order to create space for removing the helical spring or the shock absorber.
  • an adjusting device is provided between the carrier element and the strut mount, or between the actuator and the strut mount, via which the strut can be moved in the direction of the X-axis and / or via which the strut can be moved around the X-axis is pivotable.
  • asymmetrical helical springs it happens that after separating the piston 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 fitter When assembling the strut, the fitter can move 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 if it has been pulled into the cylinder by the return spring of the new generation. In this situation, the piston can easily be brought into the desired position with the adjusting device in order to be able to assemble the strut in a simple manner.
  • the adjustment of the strut takes place via a frame attached to the strut mount, which surrounds the actuator and is equipped with an adjusting screw.
  • the strut can also be pivoted precisely about the X-axis without significantly increasing the manufacturing costs.
  • Fig. 1 shows a transportable strut tensioner 1 with a telescopic actuator 2, comprising an outer tube 4 and an inner tube 6 that can be retracted into it.
  • the outer tube 4 and the inner tube 6 are connected to one another via an inner spindle (not shown here) in such a way that when a rotary knob 8 the spindle moves the inner tube 6 relative to the outer tube 4.
  • an inner spindle (not shown here)
  • a spring holder receptacle 10 for receiving a spring holder 12 is provided on the outer tube 4 and also on the inner tube 6, a spring holder receptacle 10 for receiving a spring holder 12 is provided.
  • These spring holders 12 engage in the interior of a helical spring 14 so that the two spring holders 12 are moved towards one another by actuating the rotary knob 8 and so that the helical spring 14 is tensioned accordingly.
  • the spring holder receptacle 10 comprises a circumferential shoulder 16, a thread 17 and a threaded sleeve 18, the spring holder 12 being inserted between shoulder 16 and threaded sleeve 18 in the spring holder receptacle 10 before the threaded sleeve 18 is screwed into the thread 17 and thereby clamps the spring holder 12 .
  • This spring tensioner 1 is transportable and suitable for tensioning the coil spring 14 of a suspension strut, even if the coil spring 14 is still mounted on the vehicle together with the suspension strut.
  • a return spring is mounted on the piston of the shock absorber, which brings the piston back into the cylinder of the shock absorber as soon as it is relieved.
  • Such an extreme compression of the coil spring 14 is with the in Fig. 1 illustrated spring tensioner is not always possible, in particular because the spring holder 12 engage in the helical spring 14 and thus only a limited number of spring turns can be used.
  • a first embodiment of a strut tensioner 100 according to the invention is shown.
  • This suspension strut tensioner 100 has a workbench holder 120 so that the entire suspension strut tensioner 100 can be mounted on a workbench, not shown here. This makes it possible that the strut in one for the fitter comfortable working posture on a workbench to disassemble or assemble.
  • the suspension strut tensioner 100 further comprises a vertically aligned actuator 122, on which an adjusting device 124 is attached, projecting radially, to which a suspension strut receptacle 126 is connected.
  • the suspension strut receptacle 126 engages around a cylinder 128 of a suspension strut 130 and thus holds the suspension strut 130 securely and in a non-slip manner on the suspension strut tensioner 100.
  • the suspension strut receptacle 126 comprises two separate half-shells 132, which are held together via a right and a left retaining screw 134 and in the process clamp the cylinder 128 on the suspension strut tensioner 100.
  • the upper, free end of the actuator 122 is designed as an adapter receptacle 136 to which a corresponding adapter 138 can be attached.
  • this adapter 138 a known spring tensioner 1 according to FIG Fig. 1 by means of its spring holder receptacle 10 held on the inner tube 6, in order to achieve an extension of the actuator and, if necessary, an increase in the travel range.
  • the adapter receptacle 136 is designed as a thread and has a bore 140 on a front side for receiving a socket pin 142.
  • the adapter 138 has an internal thread, not shown here, with which the adapter 138 can be screwed onto the adapter receptacle 136.
  • the adapter 138 is screwed on so far that the socket pin 142 can get into the bore 140 through an opening 144 in the adapter.
  • the adapter 138 attached to the actuator 122 by means of the internal thread is basically rotatable about its longitudinal axis together with the spring tensioner 1 held in the adapter 138 and is locked by the socket pin 142.
  • the socket pin 142 only needs to be pulled.
  • the adapter 138 is designed to be open at the top and to the front and has a retaining edge 146 below which a shoulder receptacle 148 is designed.
  • This shoulder receptacle 148 is designed to correspond to the shoulder 16 of the spring holder receptacle 10.
  • the spring tensioner 1 is pushed with its spring holder receptacle 10, in particular with its wide shoulder 16 into the shoulder receptacle 148 and then the threaded sleeve 18 of the spring tensioner 1 is screwed into the thread 17 in order to tension the shoulder 16 against the retaining edge 146 so that the spring tensioner 1 is held firmly and wobbly in the adapter 138.
  • Either a spring holder 12 known from the prior art or a head plate 152 can then be attached to the spring holder receptacle 10 attached to the outer tube 4 of the spring compressor 1.
  • a head plate 152 is inserted into the spring holder receptacle 16, which acts from above on the spring strut 130 as soon as the head plate 152 is moved against the spring force of the helical spring 14 by actuating either the actuator 2 of the spring tensioner or the actuator 122 of the spring strut tensioner.
  • the head plate 152 has a central opening 154 for receiving the free end of the spring strut 130.
  • a circumferential safety web aligned in the direction of the spring strut 130 is on the head plate 152 156 is provided, against which the free end of the spring strut 130 abuts, should it come out once on the opening 154. This prevents the spring strut 130 from falling out unintentionally.
  • a spring holder 12 can also be used instead of the head plate 152. This then engages in the helical spring 14. Although the theoretically possible travel range is reduced in this case, it is still sufficient in many cases.
  • the helical spring is not designed symmetrically to the axis of the suspension strut but has irregular shapes. If the piston of the shock absorber is decoupled from the helical spring in such an irregular helical spring, it can happen that the helical spring is offset with respect to the piston, so that both are no longer aligned coaxially. When assembling such a suspension strut, there is then the difficulty that when the helical spring is compressed, the free end of the piston no longer hits the opening of the head plate, so that it is difficult to screw the suspension strut together.
  • the adjusting device 124 is provided between the actuator 122 and the strut mount 126. If you lay fictitiously 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 direction of the X-axis.
  • the adjusting device 124 comprises a hollow cylinder 160 which is attached to the actuator 122 and in which an adjusting piston 162 is guided with an accurate fit.
  • the spring strut receptacle 126 is attached to this adjusting piston 162.
  • a frame 164 is attached to this strut mount 126, 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 is held axially immovable on the actuator 122.
  • a U-shaped holding web 168 is attached to the actuator 122, which is encompassed by two thrust bearings 170 seated on the adjusting screw 166, the axial bearings 170 being pressed against the holding web 168 by a lock nut 172 located on the adjusting screw 166 in order to move the adjusting screw smoothly rotatable and yet to be kept 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 retaining 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 held therein and the adjusting piston 162 in the direction of the X- Axis moved.
  • the adjusting piston 62 is thereby moved into and out of the hollow cylinder 160. It understands that the adjusting piston 162 always remains so far in the hollow cylinder 160 that the spring strut 130 is reliably held on the actuator 122.
  • the frame 164 is spaced so far from the actuator 122 that a pivoting of the spring strut 130 about the X axis is also possible.
  • the frame 164 pivots together with the adjusting piston 162 and the spring strut 130 about the axis of the hollow cylinder 160, which is also the axis of the adjusting screw 166 or the adjusting piston 162.
  • a limiting screw 174 is provided on each of the right and left edges of the frame 164, which limits the pivoting.
  • the limiting screw 174 hits the workbench holder 120.
  • FIG. 8 to 14 The illustrated second embodiment of a strut tensioner according to the invention differs from that in FIG Figures 2 to 7 illustrated first embodiment only in that the actuator (122) is replaced by a support element 222.
  • This support element 222 is a simple tube which cannot be adjusted or lengthened. Everything else remains unchanged.
  • the above for the first embodiment with respect to Figures 2 to 7 said applies to those 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 element (222).
  • This second embodiment is thus more cost-effective to manufacture, but has a shorter travel range. However, this shorter travel range is still sufficient for many suspension struts.
  • the ones in the Figs 14 and 15th The third embodiment shown differs from that in FIGS Figures 2 to 7
  • the first embodiment shown only in that on the adapter receptacle 136 no adapter (138) for receiving a spring compressor (1), but a spring holder adapter 338 is attached to which the head plate 152 or the spring holder 12 can be attached directly.
  • This spring holder adapter 338 is designed externally analogously to the spring holder receptacle 10 so that the spring holder 12 or the head plate 152 can be fastened to it in a manner known per se.
  • 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 receptacle 136 of the actuator 122. Otherwise, both embodiments are structurally identical, which is why this is the case with the first embodiment according to FIGS Figures 2 to 7 said in an analogous manner for this third embodiment according to the Figs. 14th and 15th applies.

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

Claims (9)

  1. Compresseur de jambe de suspension pour le remplacement d'un ressort ou d'un amortisseur d'une jambe de suspension d'un véhicule automobile, avec un élément porteur (122, 222), avec un support d'établi (120) pour le montage du compresseur de jambe de suspension (100) sur un établi,
    où un support de ressort (12) ou une plaque de tête (152) peut être monté(e) sur le compresseur de ressort (1),
    caractérisé en ce qu'un logement de jambe de suspension (126) est monté sur l'élément porteur (122, 222), qu'un adaptateur (138) pour le montage d'un compresseur de ressort transportable (1) est prévu sur l'élément porteur (122, 222), où l'adaptateur (138) est conçu pour être ouvert en haut et/ou vers l'avant pour recevoir le compresseur de ressort transportable (1).
  2. Compresseur de jambe de suspension selon la revendication 1,
    caractérisé en ce que
    l'élément porteur est conçu comme un actionneur (122).
  3. Compresseur de jambe de suspension selon l'une des revendications précédentes,
    caractérisé en ce que
    l'adaptateur (138) maintient le compresseur de jambe de suspension transportable (1) aligné axialement sur l'élément porteur (122, 222).
  4. Compresseur de jambe de suspension selon l'une des revendications précédentes,
    caractérisé en ce que
    l'adaptateur (138) maintient le compresseur de ressort transportable (1) sur l'actionneur (122) de manière à pouvoir pivoter autour de l'axe de l'élément porteur (122, 222).
  5. Compresseur de jambe de suspension pour remplacer un ressort ou un amortisseur d'une jambe de suspension d'un véhicule automobile, comprenant un actionneur (122), un support d'établi (120) pour le montage du compresseur de jambe de suspension (100) sur un établi, où un support de ressort (12) ou une plaque de tête (151) peut être monté sur l'actionneur (122),
    caractérisé en ce qu'
    un logement de jambe de suspension (126) est monté sur l'actionneur (122) et qu'un dispositif de réglage (124) est prévu entre le logement de jambe de suspension (126) et l'actionneur (122), au moyen duquel la jambe de suspension (130) peut être déplacée dans la direction d'un axe X et au moyen duquel la jambe de suspension (130) peut être pivotée autour de l'axe X, et en ce que le dispositif de réglage (124) comporte un piston de réglage (162) orienté dans la direction de l'axe X, qui est guidé dans un cylindre creux (160) fixé à l'actionneur (122) et également orienté dans la direction de l'axe X.
  6. Compresseur de jambe de suspension selon la revendication 5,
    caractérisé en ce que
    le dispositif de réglage (124) comporte un cadre (164) qui entoure l'actionneur (122), est relié au logement (126) de la jambe de suspension et comporte une vis de réglage (166) agissant sur l'actionneur (122) de préférence dans la direction de l'axe X.
  7. Compresseur de jambe de suspension selon la revendication 6,
    caractérisé en ce que
    la vis de réglage (166) est maintenue en rotation dans un filetage de réglage intégré dans le cadre (164) et dans une barrette de maintien (168) fixée à l'organe de réglage (122).
  8. Compresseur de jambe de suspension selon l'une des revendications précédentes,
    caractérisé en ce qu'
    une ouverture centrale (154) est formée dans la plaque de tête (152) et en particulier en ce que la plaque de tête (151) présente une barrette de sécurité latérale (156) pour empêcher la jambe de suspension (1) de se détacher.
  9. Compresseur de jambe de suspension selon l'une des revendications précédentes,
    caractérisé en ce que
    le logement de jambe de suspension (126) entoure et maintient la jambe de suspension (1) dans la région du cylindre (128) de l'amortisseur.
EP15002330.7A 2014-09-16 2015-08-04 Tendeur de jambe de force à ressort destiné au changement d'un ressort ou d'un amortisseur d'une jambe de force à ressort d'un véhicule automobile Active EP2998072B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014013449.0A DE102014013449B4 (de) 2014-09-16 2014-09-16 Federbeinspanner zum Austausch einer Feder oder eines Stoßdämpfers eines Federbeins eines Kraftfahrzeuges

Publications (2)

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

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP15002330.7A Active EP2998072B1 (fr) 2014-09-16 2015-08-04 Tendeur de jambe de force à ressort destiné au changement d'un ressort ou d'un amortisseur d'une jambe de force à ressort d'un véhicule automobile

Country Status (2)

Country Link
EP (1) EP2998072B1 (fr)
DE (1) DE102014013449B4 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017100581A1 (de) 2017-01-13 2018-07-19 Andreas Heiko Gruner Spannvorrichtung zum Spannen einer Schraubenfeder
CN108644279B (zh) * 2018-06-29 2023-11-24 中国船舶重工集团公司第七一九研究所 用于减振器可拆卸压力施加装置
CN110315302A (zh) * 2019-03-21 2019-10-11 广汽丰田汽车有限公司 前悬弹簧压缩机
CN111168630B (zh) * 2020-02-19 2021-07-06 陈晨曦 一种可调式涡卷弹簧安装器
CN112959042A (zh) * 2021-02-07 2021-06-15 中国第一汽车股份有限公司 一种基于压力机的螺旋弹簧式减震器拆装装置

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US4732365A (en) * 1987-01-23 1988-03-22 Kloster Kenneth D Bench mounted spring compressor
FR2745739B1 (fr) * 1996-03-11 1998-04-30 Mecanique Energetique Outillage complementaire d'un compresseur de ressort pour pose et depose d'un ressort notamment d'amortisseur
DE202006007753U1 (de) * 2006-01-23 2006-08-03 Klann-Spezial-Werkzeugbau-Gmbh Vorrichtung zum Spannen einer Schraubenfeder eines Federdämpferbeines
WO2007122641A1 (fr) * 2006-04-20 2007-11-01 Mario Mazzei Dipositif d'étau permettant d'ajuster l'inclinaison des amortisseurs pendant l'assemblage
US8910927B2 (en) * 2012-09-16 2014-12-16 Berry's Manufacturing, Inc. Work holding device for an archery bow
US20140232052A1 (en) * 2013-02-19 2014-08-21 Frank Mendez Multi-use adjustable vise
DE202013003910U1 (de) * 2013-04-25 2013-05-14 Klann-Spezial-Werkzeugbau-Gmbh Vorrichtung zur Abstützung eines Federdämpferbeines

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Publication number Publication date
EP2998072A1 (fr) 2016-03-23
DE102014013449A1 (de) 2016-03-17
DE102014013449B4 (de) 2017-05-04

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