EP2532481A2 - Tendeur à ressort intérieur équipé d'entretoises - Google Patents

Tendeur à ressort intérieur équipé d'entretoises Download PDF

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Publication number
EP2532481A2
EP2532481A2 EP20120169287 EP12169287A EP2532481A2 EP 2532481 A2 EP2532481 A2 EP 2532481A2 EP 20120169287 EP20120169287 EP 20120169287 EP 12169287 A EP12169287 A EP 12169287A EP 2532481 A2 EP2532481 A2 EP 2532481A2
Authority
EP
European Patent Office
Prior art keywords
spacers
spring
receiving
clamping plate
tensioner according
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.)
Withdrawn
Application number
EP20120169287
Other languages
German (de)
English (en)
Other versions
EP2532481A3 (fr
Inventor
Thomas Piel
Peter Welp
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.)
Hazet Werk Hermann Zerver GmbH and Co KG
Original Assignee
Hazet Werk Hermann Zerver GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hazet Werk Hermann Zerver GmbH and Co KG filed Critical Hazet Werk Hermann Zerver GmbH and Co KG
Publication of EP2532481A2 publication Critical patent/EP2532481A2/fr
Publication of EP2532481A3 publication Critical patent/EP2532481A3/fr
Withdrawn legal-status Critical Current

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

Definitions

  • the present invention relates to a réellefederspanner with spacers.
  • the present invention relates to a mecanical shortener for mounting and / or disassembling a suspension spring of a motor vehicle according to the features in the preamble of claim 1.
  • the present invention further relates to a clamping plate for a mecanical spaner according to the features in claim 15th
  • sprung suspensions or axles are used to increase the ride comfort.
  • the chassis parts In order to provide a necessary spring force for compression and rebound of the wheel, the chassis parts as an integral part of a spring component.
  • This spring component is often a helical compression spring, as it forms an optimal compromise of possible coordination of the desired ride comfort as well as favorable producibility and high longevity.
  • the wheel when driving over potholes or other subsidence, the wheel can rebound and can not only deflect when driving over bumps, the helical compression spring is biased in the installed state of the vehicle.
  • the bias is effected by the weight of the vehicle, which can compress the helical compression spring in a rest position several centimeters.
  • the wheels When the vehicle is lifted, for example onto a working platform, the wheels will spring out and be limited by an end stop so that further rebounding is prevented. So that the spring does not fall out of the chassis or its installation position in the rebounded state, it is still in a prestressed state. If it is now necessary to carry out repair, assembly or other maintenance and repair work on a chassis or perform a spring exchange, the biasing force of the helical compression spring must be overcome so that the spring can be removed.
  • spring tensioners are known from the prior art, in particular inner spring tensioner, which are positioned in the spring and then tensioned by a tensioning drive against the biasing force of the spring and thus the compressed helical compression spring from the vehicle along with the spring tensioner can be removed.
  • a central spindle drive is equipped with two arranged at the ends of the spindle drive clamping plates, which is positionable within a helical compression spring.
  • Object of the present invention is therefore to improve known from the prior art inner spring clamps so that they are universally applicable and are easier to handle.
  • the internal spring tensioner for mounting and / or disassembling a suspension spring of a motor vehicle, has a central clamping means, at the ends of each a clamping plate for coupling with the suspension spring can be arranged, wherein the clamping plates each have a contact surface for receiving a spring end and wherein the clamping plate through the clamping means are mounted relatively displaceable to each other.
  • the inner spring tensioner is according to the invention characterized in that on at least one clamping plate spacers for the positive reception of a spring segment in the region of the spring end are arranged exchangeable.
  • inner spring tensioner By means of the inner spring tensioner according to the invention with interchangeably disposable spacers, it is possible to assemble or disassemble various inner diameters of motor vehicle springs as well as different wire diameters with only one inner spring tensioner.
  • inner diameters of 60 mm can be up to inner diameters of more than 70 mm can be handled with only one clamping plate.
  • the exchangeable spacers are preferably held by a clamping fit, which is arranged positively and / or non-positively in receiving openings of the clamping plate. They are thus easily replaceable by a user fitter on site, so that by simply replacing the spacers of the inner spring tensioner is applicable to a variety of spring types. Furthermore, it can also be responded to future built-in types of springs, since any form-fitting recordings are created for use in the spring ends by simply replacing the spacers.
  • two spacers are arranged on the clamping plate, wherein a substantially parallel to the clamping plate level and / or Federwindungsebene extending receiving diameter is formed by the spacers, for positive reception in the region of a spring segment to the inner diameter corresponds to the spring segment.
  • the receiving diameter is formed, which in turn is designed variable by replacing the spacers.
  • the positive reception takes place a secure and operationally secure positional fixation of the spring segments on the clamping plate. Slippage of the spring segment or slipping of the clamping plate is prevented by the positive reception.
  • the spacers engage in the inner diameter of the spring segment, very particularly preferably in a spring segment of the last turns or the last turns of the spring end. Shearing, radially outward is thereby prevented. A particularly reliable handling of the internal spring tensioner according to the invention is the result.
  • a clearance fit or a transition fit can be produced between the receiving diameter and the inner diameter.
  • an accurate but easy attachment of the clamping plate in the region of the spring end is ensured by appropriate choice of spacers.
  • the clearance fit and / or transition fit ensures that despite the accuracy of fit by purely manual insertion, the receiving diameter engages in the inner diameter.
  • the helical compression springs are usually painted for corrosion protection. A rocking back and forth would lead to damage to the corrosion protection in the form of Lackabplatzern, which in turn is prevented by the snug fit.
  • a further advantageous embodiment variant can be changed by arranging spacers with mutually different lengths of the receiving diameter, so that different inner diameter are universal with a réellefederspanner manageable.
  • spacers with a length of only a few millimeters, for example 2, 3 or even 5 mm to spacers with a length of significantly more than 5 mm, ie 6, 7, 8 or 10 mm or to use more.
  • a receiving diameter of 40, 50 or 60 mm can be changed to a receiving diameter of 60, 70 or 80 mm.
  • these preferably have a receiving head and a Distanzfuß, wherein the receiving head is arranged in a receiving opening of the clamping plate.
  • the receiving opening in this case has a contour corresponding to the receiving head, so that on the one hand a positive reception takes place.
  • forces of up to several dozen Newton or even several hundred Newton, for example, 50, 100, 150, 200 or more N occur, so that by the positive reception of the spacer itself a secure receptacle for the spring itself is given.
  • the receiving head has a circular-segment-shaped contour and can thus be arranged in a form-fitting manner in a receiving opening of the clamping plate.
  • the circular section-shaped contour offers the possibility that a simple insertion of the spacer is possible and at the same time by the remaining portion which is not formed by the circular arc section course, a radial orientation of the Distanzfußes outwards, which in turn is advantageously represented by the geometric configuration form-fitting intrinsic safety ,
  • the spacer is additionally fixed in a fixed position in the receiving opening and / or on the clamping plate.
  • clamping lugs are particularly preferably formed on the spacer, which in turn can be arranged in the receiving opening or a special opening for receiving the clamping lugs. This ensures that even when working overhead a falling out of the spacers is avoided from the clamping plate.
  • the receiving diameter is determined by the radially outwardly pointing distance feet of the spacers. By replacing the spacers with different long distance feet thus the receiving diameter is changeable.
  • the spacer feet lie with a respective end face, which represents the radially outwardly facing side of the spacer, on the inner diameter in the region of the spring segment.
  • the end face thus comes at least partially to the inner diameter of the spring segment to the plant, which forms the positive positional fixation of the clamping plate in the corresponding turn in the region of the spring segment.
  • the end face has a curvature which corresponds to the curvature of the inner diameter.
  • the center of the inner diameter of the male spring end eccentrically to a central longitudinal axis of the clamping plate by simultaneously arranging spacers with each other different long distance feet.
  • This is particularly advantageous to cope even complex built-in helical compression springs or cramped space for performing the assembly and disassembly work.
  • the end faces then have a curvature adapted to the eccentric receptacle. As a result, in turn, the positive recording is ensured.
  • the spacers are made of a high-strength plastic.
  • the plastic is particularly preferably chosen such that it absorbs the expected forces of several dozen Newtons and at the same time has a sliding action on its surface, so that an attachment of the clamping plate with the spacers is possible.
  • the plastic is chosen such that damage to the paint coating of the helical compression spring is avoided.
  • the spacers can be made of a plastic or even of a metallic material or light metal and / or have an additional coating.
  • the coating is attached to the end faces and consists of a plastic coating or a rubber coating. Again, this makes it easy to apply the clamping plate with the spacers according to the invention in the turns of the spring and the surface of the spring is gently held by the coating at a distance.
  • the spacers are marked, so that the different lengths of Distance feet are recognizable.
  • the marking is carried out by different characters or else by a colored mark.
  • the respective lengths of the spacer feet are embossed or printed in the form of numbers on the surface of the spacers. It is also conceivable to color-highlight the whole spacer or even parts of the spacer so that it is particularly easy for an applying mechanic to use the corresponding to the spring to be disassembled spacers in the clamping plate and a correspondingly easy and short work preparation takes place.
  • a clamping plate for use on a mecanical spaner, wherein the clamping plate is inserted in an end portion of a helical compression spring in the turns and a fixed inside diameter form-fitting, so via a mechanical and / or a drive of réellefederspanners, such as a spindle drive or but a hydraulic drive, a contraction of the spring can take place.
  • a mechanical and / or a drive of réellefederspanners such as a spindle drive or but a hydraulic drive
  • the clamping plate according to the invention has at least one of the aforementioned features and is universally usable for a wide variety of spring types via spacers, which can be fixed in position on the clamping plate interlocking and / or non-positively.
  • already existing inner spring tension systems can be inexpensively retrofitted by the clamping plate according to the invention and are thus accessible to a wider range of applications, without having to resort to a large assortment of clamping plates.
  • FIG. 1 shows a devisfederspanner 1 according to the invention comprising a central clamping means 2 and two fixed to the clamping means 2 clamping plate 3 for receiving a suspension spring not shown here.
  • the lower plane plate 3 which is related to the image plane, spacers 4 are used, which have an in FIG. 2 set recording diameter 5 set.
  • FIG. 2 shows that off FIG. 1 It can be seen that the receiving diameter 5 is spanned by end faces 6 of the three spacers 4 arranged here.
  • the spacers 4 themselves are arranged with a receiving head 7 each in a receiving opening 8 in the clamping plate 3.
  • the receiving head 7 and the receiving opening 8 itself are standardized in the context of the invention, so that different spacers 4 are each universally used with their receiving head 7 in a receiving opening 8.
  • the Distanzfuß 9 of the spacer 4 then has a specific length L, which in turn, as already mentioned above, in conjunction with the other spacers 4 determines the receiving diameter 5. Shown here are distance feet 9 with a length L, which corresponds to a widening of the outer diameter of 20 mm. Consequently, the spacers 4 are provided with the identification number "10", so that an applying installer will see that he makes by selecting the spacers 4 with the label "10" a recording diameter enlargement of 20 mm, ie an increase in radius of 10 mm. In the context of the invention, this marking offers, in particular, the option of having the FIG. 3 and 4 described eccentric offsets set by correct choice of the spacers 4 comprehensible. For example, it is possible by choosing the in FIG. 3 shown spacers 4 with the identification numbers "10", “7” and “9" predetermine the exact respective eccentric offset with respect to the image plane in the horizontal and vertical directions.
  • FIG. 2 Furthermore shown in FIG. 2 is a spring segment 10 of a helical compression spring, wherein in the spring segment 10, an inner diameter 11 is present.
  • the inner diameter 11 is received by the receiving diameter 5, preferably form fit almost no play.
  • the spring segment 10 is located on an in FIG. 1 shown receiving surface 12 on the clamping plate 3.
  • FIG. 3 shown is a clamping plate 3, wherein different spacers 4 are used here from each other.
  • the spacers 4 differ by different lengths of the foot area, whereby an eccentric offset 13 of the center 14 of the inner diameter 11 of the spring segment 10 and a central longitudinal axis 15 of the clamping plate 3 takes place. With respect to the image plane, the offset is generated horizontally to the right.
  • FIG. 4 shows a further possibility of an eccentric offset 13 by selecting three mutually different spacers 4.
  • the eccentric offset 13 takes place both on the image plane to the left and up.
  • the spacers 4 each come with an end face 16 on an inner surface 17 of the spring segment 10 at least partially to the plant.
  • the end face 16 preferably has a curvature 18 which corresponds to the inner curvature 19 of the spring segment 10 in this section.
  • FIG. 5 shows a detail sectional view of a spacer 4, which is inserted in a receiving opening 8 of the clamping plate 3.
  • the spacer 4 itself is arranged with its receiving head 7 in the receiving opening 8 positively. It also has retaining lugs 20, which engage in a clamping opening 21, so that a force-locking fixing of the spacers 4 additionally takes place in the receiving opening 8. Falling out of the spacers 4 is thereby prevented.
  • FIGS. 6a and b The upper and lower clamping plate 3 engages in each case in a spring segment 10 in the region of the spring end 23 and the receiving surface 12 allows axial compression of the spring by applying an upsetting force on the clamping means 2. Zur positive radial fixation, the spacers 4 are arranged in the clamping plates 3 and support the in the region of each intervened spring segment 10 radially outward.
  • FIG. 6b shows a deliberate pivoting of clamping plate 3, clamping means 2 and helical compression spring 22, which is about the spacers between the clamping plate 3 and helical compression spring 22 is possible. Such work situations are well handled by the spacers 4 according to the invention.
  • the on the picture plane of FIG. 6b relative right clamping plate 3 is in the radial direction R upwards by appropriate choice of spacers. 4 added.
  • the upper spacer 4, which is related to the image plane has only a short length L O of the spacer foot 9 O , in relation to the lower spacer 4 U , which has a greater length L U of the spacer foot 9 U and relates to the image plane.
  • the offset can also be done only on the image plane related to the left clamping plate. It is also possible within the scope of the invention to adjust the offset on both clamping plates, so that the central longitudinal axis 24 of the coil spring 25 and the central longitudinal axis 26 of the inner spring clamp 1 are offset in parallel.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Springs (AREA)
  • Clamps And Clips (AREA)
EP12169287.5A 2011-06-06 2012-05-24 Tendeur à ressort intérieur équipé d'entretoises Withdrawn EP2532481A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201120050353 DE202011050353U1 (de) 2011-06-06 2011-06-06 Innenfederspanner mit Distanzstücken

Publications (2)

Publication Number Publication Date
EP2532481A2 true EP2532481A2 (fr) 2012-12-12
EP2532481A3 EP2532481A3 (fr) 2015-06-03

Family

ID=44502153

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12169287.5A Withdrawn EP2532481A3 (fr) 2011-06-06 2012-05-24 Tendeur à ressort intérieur équipé d'entretoises

Country Status (3)

Country Link
EP (1) EP2532481A3 (fr)
CN (1) CN102837288B (fr)
DE (1) DE202011050353U1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012110251B3 (de) * 2012-10-26 2014-03-27 Hazet-Werk Hermann Zerver Gmbh & Co. Kg Stationäre Federspannvorrichtung mit Universalspannplatte

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20119267U1 (de) 2001-11-27 2002-02-21 Klann Tools Ltd Exzenter-Druckplatten für Federspanner

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4558500A (en) * 1983-03-16 1985-12-17 Kloster Research & Development, Inc. Spring compressor for MacPherson strut suspension assemblies
DE3335979C1 (de) * 1983-10-04 1985-03-14 Horst 7730 Villingen-Schwenningen Klann Druckfedernspanner,insbesondere fuer Achsfedern von Kraftfahrzeugen
EP0947406A3 (fr) * 1998-04-02 2001-03-21 Herramientas Davidson, S.A. Appareil pour démonter les amortisseurs d'automobile
DE29819740U1 (de) * 1998-11-05 1999-06-10 Klann Tools Ltd Federspanner für Schraubenfedern mit wenigstens einem Federteller
DE10109752C1 (de) * 2001-02-28 2002-08-14 Hazet Werk Zerver Hermann Greifelement für Federspanner
DE10361597B3 (de) * 2003-12-24 2005-06-30 Klann-Spezial-Werkzeugbau-Gmbh System zum Spannen einer Schraubenfeder
DE202004006807U1 (de) * 2004-04-28 2004-07-15 Hazet-Werk Hermann Zerver Gmbh & Co. Kg Innenspanner zum Spannen einer Schraubendruckfeder
DE202006012655U1 (de) * 2006-08-17 2006-11-30 Hazet-Werk Hermann Zerver Gmbh & Co. Kg Spannplatte für einen Federspanner und Federspanner
WO2008028492A2 (fr) * 2006-09-08 2008-03-13 Scangrip A/S Compresseur de ressorts, sa mâchoire, son insert et son unité d'extension
CN201002244Y (zh) * 2006-10-26 2008-01-09 成都开天汽车工具开发有限公司 具有改进的轿车减震器弹簧拆装机
DE202007002633U1 (de) * 2007-02-22 2007-04-26 Klann-Spezial-Werkzeugbau-Gmbh Vorrichtung zum Spannen einer Schraubenfeder
DE202007011248U1 (de) * 2007-08-10 2007-10-18 Hazet-Werk Hermann Zerver Gmbh & Co. Kg Kugelgelenk-Abzieher
DE102007057549A1 (de) * 2007-11-29 2009-06-04 Horst Klann Druckauflageneinheit für eine Federspannervorrichtung
TW201004750A (en) * 2008-07-16 2010-02-01 Yakita Metal Industry Co Ltd Clamping apparatus for the shock absorbing spring
DE202008012339U1 (de) * 2008-09-16 2008-11-20 Klann-Spezial-Werkzeugbau-Gmbh Vorrichtung zum Spannen eines Federdämpferbeines

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20119267U1 (de) 2001-11-27 2002-02-21 Klann Tools Ltd Exzenter-Druckplatten für Federspanner

Also Published As

Publication number Publication date
CN102837288B (zh) 2015-05-06
DE202011050353U1 (de) 2011-07-11
EP2532481A3 (fr) 2015-06-03
CN102837288A (zh) 2012-12-26

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