EP3738715B1 - Device for supporting spring-damper assemblies for machines for assembling/disassembling vehicle suspensions - Google Patents

Device for supporting spring-damper assemblies for machines for assembling/disassembling vehicle suspensions Download PDF

Info

Publication number
EP3738715B1
EP3738715B1 EP20174026.3A EP20174026A EP3738715B1 EP 3738715 B1 EP3738715 B1 EP 3738715B1 EP 20174026 A EP20174026 A EP 20174026A EP 3738715 B1 EP3738715 B1 EP 3738715B1
Authority
EP
European Patent Office
Prior art keywords
spring
supporting
connecting element
rotation axis
jaws
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
EP20174026.3A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3738715A1 (en
Inventor
Davide Verrillo
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.)
Govoni SRL
Original Assignee
Govoni SRL
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 Govoni SRL filed Critical Govoni SRL
Publication of EP3738715A1 publication Critical patent/EP3738715A1/en
Application granted granted Critical
Publication of EP3738715B1 publication Critical patent/EP3738715B1/en
Active legal-status Critical Current
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 device for supporting spring-damper assemblies for machines for assembling/disassembling vehicle suspensions.
  • a device according to the preamble of claim 1 is known from DE202012005626U1 .
  • Equipment of the manual type and of the automatically actuated type is known for performing these interventions.
  • coil spring compressors are essentially constituted by a frame which supports a device for supporting the lower end of the spring and by a pneumatic cylinder that acts in a vertical direction and whose movable stem entrains in an alternating translational motion a horizontal crossmember that is connected to two vises adapted to be fastened at the upper end of the spring.
  • the crossmember is associated so as to slide along two vertical guides.
  • Each vise is hinged so that it can rotate about a horizontal axis at the end of a respective arm that oscillates on the horizontal plane and is connected to the crossmember, which entrains the vises in an alternating translational motion in a vertical direction. In this manner the position of the vises can adapt to different diameters and inclinations of the turns of the spring.
  • the actuation of the pneumatic cylinder allows to compress or release the spring, respectively, to disassemble or assemble the shock absorber.
  • multiple C-shaped brackets are usually provided which have a different diameter and orientation so that they can be used with right-handed and left-handed springs that have a different turn diameter.
  • the aim of the present invention is to eliminate the drawbacks described above of the background art by providing a device for supporting spring-damper assemblies for machines for assembling/disassembling vehicle suspensions that allows to avoid the setup operations described above and the consequent downtimes.
  • an object of the present invention is to provide a device that avoids the need to accommodate a plurality of support accessories, reducing overall space occupation and facilitating the installation and use of coil spring compressors.
  • Another object of the present invention is to provide a device that could be usable both in newly manufactured coil spring compressors and in already installed machines as a replacement of the support accessories usually provided.
  • Another object of the present invention is to provide a device that is simple, relatively easy to provide in practice, safe in use, effective in operation, and of relatively low cost.
  • the reference numeral 1 generally designates a device for supporting spring-damper assemblies for machines for assembling/disassembling vehicle suspensions.
  • the device 1 is designed to be mounted on so-called coil spring compressors 100, which are essentially constituted by a frame 101 for supporting presser means 102 actuated with an alternating translational motion for the compression and release of the spring of a spring-damper assembly.
  • the actuation of the presser means 102 is of the automatic type by means of linear actuators using a fluid medium or of the electric type.
  • Said machine 100 shown in Figures 9-13 , is not described in detail since it is of a type that is known to the person skilled in the art.
  • the device 1 comprises a connecting element 2 designed to be mounted on the frame 101 in conventional manners and means 3 for supporting a pair of jaws 4 which can move in an alternating manner mutually closer/apart and are adapted to form a resting surface S for the lower turn of the spring of a spring-damper assembly, not shown since it is of a known type.
  • the supporting means 3 are associated with the connecting element 2 in a manner that allows orientation about a substantially horizontal rotation axis A.
  • the device 1 by varying the mutual distance between the jaws 4 and modifying the angular position of the supporting means 3 of the jaws around the rotation axis A, it is possible to configure the device 1 as a function of the dimensions of the spring of the spring-damper assembly on which work is to be done and of the inclination of the turns of said spring, making the device 1 universally usable.
  • Each jaw 4 comprises a supporting block 5 from which an arc-like element 6 protrudes which is provided with a raised external edge 7 for the containment of the lower turn of the spring being processed.
  • Each arc-like element 6 forms, in an upper region, a portion of the resting surface S.
  • the jaws 4 have their respective arc-like elements 6 arranged mutually opposite.
  • the device 1 comprises a pair of inserts 8 which can be associated detachably with the mutually facing internal edges of the jaws 4 in order to fasten the stem of a spring-damper assembly.
  • Each insert 8 can be associated with the respective jaw 4 by virtue of conventional mechanical connection means of the reversible type, such as screws 20 or other connecting systems of the known type.
  • Each insert 8 is constituted by a respective C-shaped element adapted to be fastened onto the stem of a spring-damper assembly.
  • the device 1 is further flexible in use, since it can also be used for spring-damper assemblies that need to be supported by means of the fastening of the stem of the corresponding shock absorber and not by means of the resting contact of the spring.
  • the connecting element 2 is essentially L-shaped, so as to form a ledge 9 for fixing to the frame 101 and a front plate 10 associated with the supporting means 3.
  • the plate 10 is provided with a hole in which a ring 11 is inserted for rotational support about the rotation axis A of the supporting means 3; the ring 11 is arranged at said axis.
  • the supporting means 3 comprise a bracket 12 which supports two mutually opposite wings 13 and is provided with a first hole 14 at the ring 11.
  • the supporting means 3 also comprise a plate 15 provided with a second hole 16 at the first hole 14, which is connected to the bracket 12 by virtue of threaded elements 17.
  • the supporting means 3 comprise a pivot 18 that lies along the rotation axis A and is inserted so as to pass through the first hole 14 and the second hole 16 until it enters rotatably the ring 11, which is provided with a disc 19 for abutment against the plate 15.
  • the jaws 4 are associated with the bracket 12 by virtue of mutual distance adjustment means 21, which comprise a stem 22 that has a substantially horizontal arrangement and supports two externally threaded sections 22a and 22b, with an oppositely oriented thread, each of which is coupled in a corresponding threaded hole 23 formed on the block 5 of a respective jaw 4.
  • mutual distance adjustment means 21 comprise a stem 22 that has a substantially horizontal arrangement and supports two externally threaded sections 22a and 22b, with an oppositely oriented thread, each of which is coupled in a corresponding threaded hole 23 formed on the block 5 of a respective jaw 4.
  • the stem 22 has the opposite ends inserted in respective slots 24 formed on the wings 13 of the bracket 12. At one end, the stem 22 is coupled to an actuation knob 25 which can be gripped by an operator in order to actuate its rotation about the corresponding longitudinal axis and therefore to allow the variation of the mutual distance of the jaws 4. By virtue of the rotation of the stem 22 about its own longitudinal axis in either direction, the approach/spacing of the jaws 4 is determined.
  • the jaws 4 are connected to the wings 13 of the bracket 12 by means of a linear guide 26, which has an arrangement that is substantially horizontal and parallel to the stem 22 and is inserted so as to pass through respective holes 27 provided in the blocks 5 of the jaws 4.
  • the guide 26 has mutually opposite ends supported by the wings 13 of the bracket 12.
  • the device 1 can have means 28 for adjusting the angular position of the supporting means 3 with respect to the connecting element 2 about the rotation axis A.
  • the adjustment means 28 can be provided with an L-shaped plate 29 which is connected to a wing 13 and to the corresponding end of the guide 26 and is associated with a knob 30 which supports a retractable pivot 31 which can be inserted in at least one corresponding opening 32 provided on the front plate 10 as a function of the desired angular position.
  • the front plate 10 is provided with a plurality of openings 32 for the insertion of the retractable pivot 31 which are arranged along different orientations about the rotation axis A.
  • the adjustment means 28 are adapted to define at least one first operating position, in which the resting surface S has a substantially horizontal arrangement ( Figure 9 ), a second operating position, in which the resting surface S has a first inclination ⁇ with respect to a horizontal plane P that passes through the rotation axis A ( Figure 10 ), and a third operating position, in which the resting surface S has a second inclination ⁇ , which is equal and opposite with respect to the first inclination ⁇ , relative to the horizontal plane P ( Figure 11 ).
  • the device 1 allows to work with right-handed and left-handed springs.
  • the front plate 10 is provided with three openings 32 that are distributed around the rotation axis A ( Figures 3 and 7 ).
  • the stroke limiting means 33 comprise two abutment pins 34 of the bracket 12 which protrude from the front plate 10 on opposite sides of the rotation axis R.
  • the threaded elements 17 have such a length as to not pass through the bracket 12.
  • the device 1 comprises means 35 for guiding the rotation of the supporting means 3 with respect to the connecting element 2 about the rotation axis R.
  • the threaded element 17 have a greater longitudinal extension and are inserted so as to pass through the bracket 12 until they are inserted, with the respective stems, in corresponding arc-like slots 36 formed on the front plate 10.
  • the coupling of the stems of the threaded elements 17 in these arc-like slots 36 provides said guiding means 35.
  • This embodiment of the device 1 is adapted to withstand greater loads during processing.
  • the described invention achieves the proposed aim and objects and in particular the fact is stressed that the device according to the invention can be used universally as the characteristics of the spring-damper assembly being processed vary and does not require preparatory setup interventions. Furthermore, it compacts the space occupation of the coil spring compressor on which it is installed, since it does not require to provide auxiliary components. Not least, the device according to the invention can be fitted both on newly manufactured machines and on machines that are already installed as a replacement of conventional support accessories.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Damping Devices (AREA)
  • Vehicle Body Suspensions (AREA)
  • Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
  • Springs (AREA)
EP20174026.3A 2019-05-17 2020-05-12 Device for supporting spring-damper assemblies for machines for assembling/disassembling vehicle suspensions Active EP3738715B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102019000006935A IT201900006935A1 (it) 2019-05-17 2019-05-17 Dispositivo di supporto di gruppi molla-ammortizzatore per macchine per il montaggio/smontaggio di sospensioni di veicoli

Publications (2)

Publication Number Publication Date
EP3738715A1 EP3738715A1 (en) 2020-11-18
EP3738715B1 true EP3738715B1 (en) 2023-01-04

Family

ID=67734760

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20174026.3A Active EP3738715B1 (en) 2019-05-17 2020-05-12 Device for supporting spring-damper assemblies for machines for assembling/disassembling vehicle suspensions

Country Status (2)

Country Link
EP (1) EP3738715B1 (it)
IT (1) IT201900006935A1 (it)

Family Cites Families (3)

* 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
DE102006003284B3 (de) * 2006-01-23 2007-07-05 Klann-Spezial-Werkzeugbau-Gmbh Vorrichtung zum Spannen einer Schraubenfeder eines Federdämpferbeines
DE202012005626U1 (de) * 2012-06-06 2012-06-29 Klann-Spezial-Werkzeugbau-Gmbh Druckplatte für Federspanner

Also Published As

Publication number Publication date
IT201900006935A1 (it) 2020-11-17
EP3738715A1 (en) 2020-11-18

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