EP2998072A1 - Tendeur de jambe de force a ressort destine au changement d'un ressort ou d'un amortisseur d'une jambe de force a ressort d'un vehicule automobile - Google Patents

Tendeur de jambe de force a ressort destine au changement d'un ressort ou d'un amortisseur d'une jambe de force a ressort d'un vehicule automobile 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
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP15002330.7A
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German (de)
English (en)
Other versions
EP2998072B1 (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 date
Application filed by Ssw Schmack Spezialwerkzeuge & Co KG GmbH filed Critical Ssw Schmack Spezialwerkzeuge & Co KG GmbH
Publication of EP2998072A1 publication Critical patent/EP2998072A1/fr
Application granted granted Critical
Publication of EP2998072B1 publication Critical patent/EP2998072B1/fr
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Anticipated expiration legal-status Critical

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Classifications

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

Definitions

  • the 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)
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 true EP2998072A1 (fr) 2016-03-23
EP2998072B1 EP2998072B1 (fr) 2020-09-09

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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

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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108644279A (zh) * 2018-06-29 2018-10-12 中国船舶重工集团公司第七〇九研究所 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
CN111168630A (zh) * 2020-02-19 2020-05-19 赖建凤 一种可调式涡卷弹簧安装器

Families Citing this family (2)

* 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
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

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4732365A (en) * 1987-01-23 1988-03-22 Kloster Kenneth D Bench mounted spring compressor
DE202006007753U1 (de) 2006-01-23 2006-08-03 Klann-Spezial-Werkzeugbau-Gmbh Vorrichtung zum Spannen einer Schraubenfeder eines Federdämpferbeines
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

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
WO2007122641A1 (fr) * 2006-04-20 2007-11-01 Mario Mazzei Dipositif d'étau permettant d'ajuster l'inclinaison des amortisseurs pendant l'assemblage
DE202013003910U1 (de) * 2013-04-25 2013-05-14 Klann-Spezial-Werkzeugbau-Gmbh Vorrichtung zur Abstützung eines Federdämpferbeines

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4732365A (en) * 1987-01-23 1988-03-22 Kloster Kenneth D Bench mounted spring compressor
DE202006007753U1 (de) 2006-01-23 2006-08-03 Klann-Spezial-Werkzeugbau-Gmbh Vorrichtung zum Spannen einer Schraubenfeder eines Federdämpferbeines
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 (zh) * 2018-06-29 2018-10-12 中国船舶重工集团公司第七〇九研究所 用于减振器可拆卸压力施加装置
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
CN111168630A (zh) * 2020-02-19 2020-05-19 赖建凤 一种可调式涡卷弹簧安装器

Also Published As

Publication number Publication date
EP2998072B1 (fr) 2020-09-09
DE102014013449A1 (de) 2016-03-17
DE102014013449B4 (de) 2017-05-04

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