FR2667915A1 - Device for protecting damping springs when they are being fitted and removed - Google Patents

Device for protecting damping springs when they are being fitted and removed Download PDF

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Publication number
FR2667915A1
FR2667915A1 FR9012749A FR9012749A FR2667915A1 FR 2667915 A1 FR2667915 A1 FR 2667915A1 FR 9012749 A FR9012749 A FR 9012749A FR 9012749 A FR9012749 A FR 9012749A FR 2667915 A1 FR2667915 A1 FR 2667915A1
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FR
France
Prior art keywords
cup
cups
fitted
case
damping springs
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
FR9012749A
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French (fr)
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FR2667915B1 (en
Inventor
Lambert Robert
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Mecanique Energetique
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Mecanique Energetique
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Publication date
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Application filed by Mecanique Energetique filed Critical Mecanique Energetique
Priority to FR9012749A priority Critical patent/FR2667915B1/en
Publication of FR2667915A1 publication Critical patent/FR2667915A1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
    • F16F1/024—Covers or coatings therefor
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
    • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
    • B60G2206/90—Maintenance
    • B60G2206/92—Tools or equipment used for assembling
    • B60G2206/921—Coil spring compressor

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

Abstract

The invention relates to a device for protecting damping springs when they are being fitted or removed by means of a spring compressor, and consists of a sleeve or sheaths (6, 7, 8) to fit over the branches (4 and 5) of each of the spring plates (cups) (1) which such compressors include.

Description

Les ressorts d'amortisseurs sont des organes mécaniques qui sont extrêmement sollicités en fatigue. The shock absorber springs are mechanical parts which are extremely stressed in fatigue.

L'évolution des connaissances dans le domaine technologique a montré toute l'importance et l'influence des défauts de surface en ce qui concerne la tenue mécanique et la longévité des organes fortement sollicités en fatigue c'est-à-dire subissant des contraintes variables en permanence et de manière cyclique. En effet toute impureté ou rayure est une amorce de rupture. The evolution of knowledge in the technological field has shown all the importance and the influence of surface defects with regard to the mechanical strength and the longevity of organs highly stressed in fatigue, that is to say undergoing variable stresses. continuously and cyclically. Indeed any impurity or scratch is a beginning of rupture.

Il est donc apporté un soin de plus en plus grand à la fabrication de ces ressorts et notamment à leur finition de surface, ce qui permet à quantité égale de matière d'en augmenter les performances ou la longévité ou, pour des performances données, d'en diminuer le poids ce qui est constamment recherché notamment en matière de construction automobile. Increasing care is therefore taken in the manufacture of these springs and in particular in their surface finish, which allows an equal amount of material to increase their performance or longevity or, for given performances, d '' reduce the weight which is constantly sought in particular in automotive construction.

Outre le soin apporté, dès la fabrication, aux états de surface de ses ressorts, on réalise une protection de ceux-ci par un revêtement pour empêcher ou retarder 11 effet dégradant de la corrosion sur cet état de surface. In addition to the care taken, from manufacture, on the surface conditions of its springs, protection is provided by a coating to prevent or delay the degrading effect of corrosion on this surface state.

Ce revêtement est par nature fragile (peinture ou gainage de matière synthétique) et peut être facilement blessé, de même que le ressort sous-jacent, par les outils de pose et de dépose de ces ressorts (compresseurs) au moyen desquels on exerce des efforts importants sur les spires pour les comprimer.This coating is inherently fragile (paint or sheathing of synthetic material) and can be easily injured, as is the underlying spring, by the tools for installing and removing these springs (compressors) by means of which forces are exerted. important on the turns to compress them.

Il a déjà été proposé, pour protéger les ressorts de revêtir les surfaces actives des outils d'un matériau en matière plastique souple et de faible dureté. It has already been proposed, to protect the springs, to coat the active surfaces of the tools with a flexible plastic material of low hardness.

Ce revêtement est généralement opéré par trempage des coupelles ou mâchoires de compression dans un bain de matière appropriée qui, en se solidifiant, vient surmouler, sur une faible épaisseur, au moins les branches de ces coupelles.This coating is generally carried out by dipping the compression cups or jaws in a bath of suitable material which, when it solidifies, is molded, over a small thickness, at least the branches of these cups.

L'inconvénient majeur de ces outils revêtus réside dans 1 l'usure très rapide du revêtement et dans la mise à nu de l'acier de la coupelle qui vient en contact direct avec le ressort. La restauration de cette pellicule de protection implique de retourner les coupelles au constructeur donc, pour l'utilisateur de rendre indisponible momentanément son outil ou de disposer d'un jeu de coupelles de secours ce qui est une dépense supplémentaire. The major drawback of these coated tools lies in the very rapid wear of the coating and in the exposure of the steel of the cup which comes into direct contact with the spring. The restoration of this protective film involves returning the cups to the manufacturer, therefore, for the user to temporarily make his tool unavailable or to have a set of emergency cups which is an additional expense.

On constate en fait que l'utilisateur néglige d'entretenir ces coupelles revêtues tout en continuant de s'en servir et ainsi en blessant les ressorts sur lesquels il intervient. It is found in fact that the user neglects to maintain these coated cups while continuing to use them and thus injuring the springs on which he intervenes.

La présente invention entend remédier à cet inconvénient par le moyen d'un dispositif simple dont il est facile de vérifier le degré d'usure et qui peut être aisément remplacé sans qu'il soit nécessaire d'immobiliser l'outil. The present invention intends to remedy this drawback by means of a simple device the degree of wear of which it is easy to check and which can be easily replaced without it being necessary to immobilize the tool.

A cet effet, l'invention a donc pour objet un dispositif de protection des ressorts d'amortisseurs contre les blessures qu'ils subissent de la part des coupelles en fourche des compresseurs lorsqu'elles sont en prise, qui est constitué par au moins un étui chaussant chacune des branches de la coupelle réalisé dans un matériau souple en feuille. To this end, the subject of the invention is therefore a device for protecting the shock absorber springs against the injuries they suffer from the fork cups of the compressors when they are engaged, which consists of at least one case fitting each branch of the cup made of a flexible sheet material.

D'autres caractéristiques et avantages de l'invention ressortiront de la description d'un exemple de réalisation donnée ci-après. Other characteristics and advantages of the invention will emerge from the description of an exemplary embodiment given below.

Il sera fait référence aux dessins annexés dans lesquels
- la figure 1 est une vue générale d'une coupelle équipée du dispositif selon l'invention,
- les figures 2 et 3 sont des vues d'un fourreau formant la moitié de l'étui chaussant selon 1 'in- vention, la figure 3 étant une vue suivant F de la figure 2.Reference will be made to the accompanying drawings in which
FIG. 1 is a general view of a cup equipped with the device according to the invention,
FIGS. 2 and 3 are views of a sheath forming half of the footwear case according to the invention, FIG. 3 being a view along F of FIG. 2.

Ainsi, aux figures, on a représenté une coupelle 1, généralement en acier coulé ou forgé, qui comporte deux parties, l'une 2 d'attachement de la coupelle à l'organe moteur, non représenté, du genre vérin à vis qui permet de déplacer l'une par rapport à l'autre deux coupelles telles que 1 placées en vis-à-vis et en prise avec un ressort à comprimer ou à décomprimer par une partie active 3 en forme de fourche à deux branches 4 et 5. Il existe de nombreuses fabrications de ces coupelles bien connues dans le domaine technique des amortisseurs de véhicules automobiles. Thus, in the figures, a cup 1 is shown, generally made of cast or forged steel, which has two parts, one 2 for attaching the cup to the motor member, not shown, of the screw jack type which allows to move one with respect to the other two cups such as 1 placed opposite and engaged with a spring to be compressed or decompressed by an active part 3 in the form of a fork with two branches 4 and 5. There are many manufactures of these well-known cups in the technical field of motor vehicle shock absorbers.

Le dispositif de l'invention est constitué par un étui 6 de chacune des branches 4 et 5 de cette fourche. The device of the invention consists of a case 6 of each of the branches 4 and 5 of this fork.

Cet étui comprend, dans le cas des figures, deux fourreaux 7 et 8 mais, dans une variante non représentée, il peut être en une seule pièce.This case comprises, in the case of the figures, two sleeves 7 and 8 but, in a variant not shown, it can be in one piece.

Chacun des fourreaux 7, 8 est confectionné à partir d'une feuille (textile, en cuir, en matière plastique...) soit par découpe et couture, soit par formage de manière à pouvoir chausser chacune des branches de la coupelle et recouvrir d'une part la piste de chaque coupelle (la surface en général hélicoldale de chaque branche qui reçoit une fraction de spire du ressort) et les rebords interne et externe de cette piste. Chaque fourreau, vu de dessus, présente donc la forme en croissant de la figure 2 avec une portion extrême de paroi utile 9 pour recouvrir la partie centrale de la piste jusqu'au plan (P) médian vertical de partage de la coupelle en deux branches.Il possède par ailleurs une languette d'extrémité 10 qui prolonge la partie dorsale 11 du fourreau pour constituer un moyen de retenue des fourreaux sur la coupelle par le moyen d'un lien 12 (qui peut par exemple être un anneau élastique. Each of the sleeves 7, 8 is made from a sheet (textile, leather, plastic ...) either by cutting and sewing, or by forming so as to be able to fit each of the branches of the cup and cover with on the one hand the track of each cup (the generally helical surface of each branch which receives a fraction of the coil of the spring) and the internal and external edges of this track. Each scabbard, seen from above, therefore has the crescent shape of FIG. 2 with an extreme portion of wall useful 9 for covering the central part of the track to the vertical median plane (P) of sharing the cup in two branches .It also has an end tab 10 which extends the dorsal portion 11 of the sheath to constitute a means of retaining the sheaths on the cup by means of a link 12 (which may for example be an elastic ring.

Le matériau utilisé pour la confection de l'étui ou de chaque fourreau pourra être de toute nature appropriée. On citera, à titre d'exemple, un matériau textile composite qui peut présenter une face interne relativement peu glissante sur l'acier des coupelles et une surface extérieure au contraire à très faible coefficient de friction pour le ressort. On peut adjoindre à un textile résistant extérieur une pièce en mousse synthétique intérieure qui accroche à l'acier tout en formant couche d'amortissement. The material used to make the case or each sheath may be of any suitable nature. By way of example, mention may be made of a composite textile material which may have a relatively non-slippery internal face on the steel of the cups and an external surface, on the contrary, with a very low coefficient of friction for the spring. You can add an interior synthetic foam piece to an exterior resistant fabric that clings to the steel while forming a cushioning layer.

On comprend que le dispositif de l'invention soit extrêmement simple à mettre en place ou à retirer. It is understood that the device of the invention is extremely simple to install or remove.

Il permet en outre une vérification très facile de son état d'usure et donc de le jeter à temps et de le remplacer par un jeu de fourreaux neufs, sans avoir même à retirer les coupelles du compresseur si elles y sont fixées. Le garagiste dispose donc en permanence d'un matériel toujours en état.It also allows a very easy verification of its state of wear and therefore to throw it in time and replace it with a set of new sleeves, without even having to remove the compressor cups if they are attached to it. The garage owner therefore always has equipment that is always in working order.

Bien entendu l'invention couvre également tout dispositif équivalent qui comporterait une feuille de couverture de la piste de la coupelle et de ses rebords interne et externe et des moyens de retenue de cette feuille (taillée en forme de portion de couronne annulaire) quelconques tels que des liens à nouer autour des branches de la coupelle, des petites pattes transversales autoagrippantes l'une sur l'autre sous la piste de la coupelle, des boucles transversales élastiques. Elle n'est donc pas limitée à un étui préréalisé mais concerne tout dispositif amovible présentant une paroi souple de couverture de la piste et des rebords de chaque coupelle.  Of course, the invention also covers any equivalent device which would include a sheet covering the track of the cup and its internal and external edges and any means for retaining this sheet (cut in the form of a portion of an annular crown) such as ties to tie around the branches of the cup, small hook-and-loop transverse tabs one on top of the other under the cup track, elastic transverse loops. It is therefore not limited to a prealized case but relates to any removable device having a flexible wall covering the track and the edges of each cup.

Claims (4)

REVENDICATIONS 1. Dispositif de protection des ressorts d'amortisseurs contre les blessures qu'ils subissent de la part des coupelles (1) en fourche (4,5) des compresseurs lorsqu'elles sont en prise caractérisé en ce qu'il est constitué par au moins un étui (6) recouvrant au moins la partie active de chacune des branches (4,5) de la fourche réalisé dans un matériau souple en feuille. 1. Device for protecting the shock absorber springs against the injuries they suffer from the cups (1) in the fork (4,5) of the compressors when they are in engagement, characterized in that it consists of at at least one case (6) covering at least the active part of each of the branches (4,5) of the fork made of a flexible sheet material. 2. Dispositif selon la revendicatrion 1 caractérisé en ce que l'étui (6) comporte deux fourreaux (7,8) séparés de gainage, chacun d'eux étant adapté pour recevoir une branche (4,5) de la coupelle (9) et en recouvrir la partie active jusqu'au plan (P) vertical de symétrie de celle-ci. 2. Device according to claim 1 characterized in that the case (6) comprises two sheaths (7,8) separate sheathing, each of them being adapted to receive a branch (4,5) of the cup (9) and cover the active part thereof up to the vertical plane (P) of symmetry thereof. 3. Dispositif selon la revendication 2 caractérisé en ce que chaque fourreau comporte, à son extrémité voisine de ce plan de symétrie lorsqutelle est en place, une languette (10) pour sa fixation au moyen d'attelage (2) de la coupelle au compresseur. 3. Device according to claim 2 characterized in that each sleeve has, at its end close to this plane of symmetry when it is in place, a tongue (10) for its attachment to the coupling means (2) of the cup to the compressor . 4. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il est réalisé en matériau textile.  4. Device according to any one of the preceding claims, characterized in that it is made of textile material.
FR9012749A 1990-10-16 1990-10-16 DEVICE FOR PROTECTING THE SHOCK ABSORBER SPRINGS DURING THEIR ASSEMBLY OR DISASSEMBLY. Expired - Fee Related FR2667915B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9012749A FR2667915B1 (en) 1990-10-16 1990-10-16 DEVICE FOR PROTECTING THE SHOCK ABSORBER SPRINGS DURING THEIR ASSEMBLY OR DISASSEMBLY.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9012749A FR2667915B1 (en) 1990-10-16 1990-10-16 DEVICE FOR PROTECTING THE SHOCK ABSORBER SPRINGS DURING THEIR ASSEMBLY OR DISASSEMBLY.

Publications (2)

Publication Number Publication Date
FR2667915A1 true FR2667915A1 (en) 1992-04-17
FR2667915B1 FR2667915B1 (en) 1993-05-07

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FR9012749A Expired - Fee Related FR2667915B1 (en) 1990-10-16 1990-10-16 DEVICE FOR PROTECTING THE SHOCK ABSORBER SPRINGS DURING THEIR ASSEMBLY OR DISASSEMBLY.

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0645216A1 (en) * 1993-09-29 1995-03-29 Horst Klann Spring compressor for MacPherson strut suspension
FR2769865A1 (en) * 1997-10-17 1999-04-23 Klann Tools Ltd Protective support for helical spring clamp for vehicle axle springs
GB2369321A (en) * 2000-10-12 2002-05-29 Richard James Thorpe Apparatus for use in dismantling and assembling spring suspension units
FR2979854A1 (en) * 2011-09-08 2013-03-15 Peugeot Citroen Automobiles Sa Method for assembling helicoid spring between rear wheel-axle unit and wheel of car, involves compressing helicoid spring, protecting helicoid spring, where U-shaped protection envelope partially surrounds spring, and decompressing spring

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29719872U1 (en) 1997-11-08 1998-01-08 Klann Tools Ltd., Oxfordshire Variable surface protection for coil springs

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2334884A (en) * 1941-09-29 1943-11-23 Murray Corp Device for pocketing springs
BE657883A (en) * 1964-01-17 1965-07-05
DE1979962U (en) * 1967-12-20 1968-02-29 Ahle Fa Geb DEVICE FOR NOISE DAMPING IN PROGRESSIVE COMPRESSION COIL SPRINGS.
EP0349776A2 (en) * 1988-07-07 1990-01-10 Horst Klann Clamp for compression springs

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2334884A (en) * 1941-09-29 1943-11-23 Murray Corp Device for pocketing springs
BE657883A (en) * 1964-01-17 1965-07-05
DE1979962U (en) * 1967-12-20 1968-02-29 Ahle Fa Geb DEVICE FOR NOISE DAMPING IN PROGRESSIVE COMPRESSION COIL SPRINGS.
EP0349776A2 (en) * 1988-07-07 1990-01-10 Horst Klann Clamp for compression springs

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0645216A1 (en) * 1993-09-29 1995-03-29 Horst Klann Spring compressor for MacPherson strut suspension
FR2769865A1 (en) * 1997-10-17 1999-04-23 Klann Tools Ltd Protective support for helical spring clamp for vehicle axle springs
GB2369321A (en) * 2000-10-12 2002-05-29 Richard James Thorpe Apparatus for use in dismantling and assembling spring suspension units
FR2979854A1 (en) * 2011-09-08 2013-03-15 Peugeot Citroen Automobiles Sa Method for assembling helicoid spring between rear wheel-axle unit and wheel of car, involves compressing helicoid spring, protecting helicoid spring, where U-shaped protection envelope partially surrounds spring, and decompressing spring

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Publication number Publication date
FR2667915B1 (en) 1993-05-07

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