FR2697187A1 - Separating shears for motor vehicle accidents - comprises double blade and opposed single blade which are pivoted about common axis fixed with respect to body of shears - Google Patents

Separating shears for motor vehicle accidents - comprises double blade and opposed single blade which are pivoted about common axis fixed with respect to body of shears Download PDF

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Publication number
FR2697187A1
FR2697187A1 FR9213265A FR9213265A FR2697187A1 FR 2697187 A1 FR2697187 A1 FR 2697187A1 FR 9213265 A FR9213265 A FR 9213265A FR 9213265 A FR9213265 A FR 9213265A FR 2697187 A1 FR2697187 A1 FR 2697187A1
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France
Prior art keywords
blade
blades
double blade
double
shears
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Granted
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FR9213265A
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French (fr)
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FR2697187B1 (en
Inventor
Gallego Yves
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Individual
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Individual
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Expired - Fee Related legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23DPLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D17/00Shearing machines or shearing devices cutting by blades pivoted on a single axis
    • B23D17/02Shearing machines or shearing devices cutting by blades pivoted on a single axis characterised by drives or gearings therefor
    • B23D17/06Shearing machines or shearing devices cutting by blades pivoted on a single axis characterised by drives or gearings therefor actuated by fluid or gas pressure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23DPLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D29/00Hand-held metal-shearing or metal-cutting devices
    • B23D29/005Hand-held metal-shearing or metal-cutting devices for cutting sheets

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shearing Machines (AREA)

Abstract

The cutting assembly is made up of a single blade (4) that is movable and a double blade (5) that is either fixed or movable. They are pivoted about a common axis (6) fixed with respect to the body of the shears (1). They are mounted on a hydraulic jack (2) of which the piston actions the single blade (4) or the two blades (4,5) with the aid of a movable housing (3). The non-skid grooves (9) allow the device to separate and the internal flanks (7) of the double blade (5) make easy the release of the flakes. USE - Allows release of persons trapped in accident vehicles of which the body has been deformed by the impact.

Description

CISAILLE ÉCARTEUR COMPORTANT UNE LAME
DOUBLE ET UNE LAME SIMPLE
La présente invention a pour objet une cisaille écarteur comportant une lame double et une lame simple.
SPREAD SHEAR HAVING A BLADE
DOUBLE AND A SINGLE BLADE
The present invention relates to a spacer shear comprising a double blade and a single blade.

Elle est destinée en particulier à permettre la désincarcération des personnes enfermées dans des véhicules accidentés dont la carrosserie a été déformée par le choc. It is intended in particular to allow the extrication of people trapped in damaged vehicles whose bodywork has been deformed by the impact.

Les dispositifs réalisés à ce jour et destinés au même usage, comme ceux décrits dans les brevets français NO 2 556 266 et 2 503 000 ou le brevet américain NO 3 898 805 par exemple, sont le plus souvent des appareils dérivés de la cisaille à main classique, comportant deux lames pivotant autour d'un axe et se croisant lors de la coupe à la manière des lames de ciseaux. Il est pratiquement impossible de couper des tôles épaisses ou des profilés avec ce type de cisaille, du fait que les lames ont tendance, dans ce cas, à s'écarter l'une de l'autre et à se bloquer complètement en rendant l'outil inutilisable, si l'on insiste. The devices produced to date and intended for the same use, such as those described in French patents NO 2,556,266 and 2,503,000 or American patent NO 3,898,805 for example, are most often devices derived from hand shears classic, comprising two blades pivoting around an axis and crossing each other during cutting in the manner of scissor blades. It is practically impossible to cut thick sheets or profiles with this type of shears, because the blades tend, in this case, to move away from each other and to completely block making the unusable tool, if you insist.

Les brevets français NO 2 353 206 et 2 500 344 décrivent des cisailles à trois lames de coupe, une lame simple passant entre deux contrelames identiques. French patents NO 2,353,206 and 2,500,344 describe shears with three cutting blades, a single blade passing between two identical counterblades.

Ces appareils sont surtout conçus pour le découpage industriel des tôles et se prêtent mal au travail de désincarcération des accidentés et doivent dans tous les cas être complétés par un écarteur. Dans le premier de ces deux brevets, la lame simple se déplace le long d'une glissière de guidage au bout de laquelle sont fixées les contrelames. Cette disposition ne permet en aucun cas de développer une puissance de coupe importante sans risque de blocage du mécanisme. Le dispositif objet du second brevet, quant à lui, comporte des lames triangulaires trop encombrantes pour s'insérer aisément entre les tôles froissées et tordues que l'on trouve sur les véhicules accidentés.These devices are especially designed for the industrial cutting of sheets and do not lend themselves well to the work of extrication of accident victims and must in all cases be completed by a retractor. In the first of these two patents, the simple blade moves along a guide slide at the end of which the counterblades are fixed. This arrangement does not allow in any case to develop a significant cutting power without risk of blocking the mechanism. The device which is the subject of the second patent, meanwhile, comprises triangular blades which are too bulky to be easily inserted between the crumpled and twisted sheets which are found on damaged vehicles.

Le dispositif selon la présente invention supprime tous ces inconvenients. En effet, il permet avec un seul outil maniable et puissant de couper et d'écarter les tôles, même de forte épaisseur, ou les profilés constituant la carrosserie des véhicules, sans aucun risque de blocage de l'appareil. The device according to the present invention eliminates all these drawbacks. Indeed, it allows with a single handy and powerful tool to cut and spread the sheets, even very thick, or the profiles constituting the vehicle body, without any risk of blocking the device.

Il est constitué par la combinaison d'un vérin à double effet actionnant un ensemble de coupe constitué d'une lame simple et d'une lame double pivotant autour d'un axe commun, les parties des lames opposées aux parties coupantes étant pourvues de stries antidérapantes permettant à l'appareil de servir d'écarteur, et les flancs internes de la lame double étant évasés pour faciliter le dégagement des copeaux. It is constituted by the combination of a double-acting cylinder actuating a cutting assembly consisting of a single blade and a double blade pivoting around a common axis, the parts of the blades opposite to the cutting parts being provided with ridges. Non-slip allowing the device to serve as a spreader, and the internal sides of the double blade being flared to facilitate the release of shavings.

Sur les dessins annexés, donnés à titre d'exemple non limitatif d'une des formes de réalisation de l'objet de l'invention:
la figure 1 représente en vue éclatée de cisaille écarteur avec lame double fixe,
la figure 2 représente dans les mêmes conditions une cisaille écarteur à lame double mobile,
et la figure 3 est une coupe transversale agrandie de la double lame, suivant les flèches A-A de la figure 1.
In the accompanying drawings, given by way of nonlimiting example of one of the embodiments of the subject of the invention:
FIG. 1 is an exploded view of a retracting shear with a fixed double blade,
FIG. 2 shows, under the same conditions, a retractable shear with a movable double blade,
and FIG. 3 is an enlarged cross-section of the double blade, according to the arrows AA in FIG. 1.

Le dispositif, figures 1 à 3, est constitué d'un corps de cisaille 1 fixe, monté sur l'extrêmité avant d'un vérin hydraulique 2 à double effet, et d'une chape mobile fixée sur la tête de piston dudit vérin et actionnant un ensemble de coupe constitué d'une lame simple 4 mobile, et d'une lame double 5 fixe ou mobile pivotant autour d'un axe commun 6 fixe par rapport au corps de cisaille 1. The device, FIGS. 1 to 3, consists of a fixed shear body 1, mounted on the front end of a double-acting hydraulic cylinder 2, and a movable yoke fixed on the piston head of said cylinder and actuating a cutting assembly consisting of a simple movable blade 4, and of a fixed or movable double blade 5 pivoting about a common axis 6 fixed relative to the shear body 1.

La lame double 5 est formée de deux lames 5' et 5" solidaires symétriques par rapport à un plan passant entre elles. Leurs flancs internes 7 ne sont pas parallèles et s'écartent l'un de l'autre à partir de la ligne de coupe 12 de manière à faciliter le dégagement des copeaux. Les extrêmités 8 des deux lames 5' et 5" sont rendues solidaires par boulonnage, rivetage, soudure ou tout autre moyen, afin d'interdire toute possibilité d'écartement. The double blade 5 is formed by two blades 5 'and 5 "which are symmetrical with respect to a plane passing between them. Their internal flanks 7 are not parallel and move away from each other from the line of cut 12 so as to facilitate the removal of the chips. The ends 8 of the two blades 5 ′ and 5 ″ are made integral by bolting, riveting, welding or any other means, in order to prohibit any possibility of separation.

La ligne de coupe, aussi bien des lames simples 4 que des lames doubles 5, est de préférence droite et les côtés opposés à cette ligne de coupe sont pourvus de stries antidérapantes 9 destinées à faciliter l'utilisation de l'appareil en tant qu'écarteur. The cutting line, both of the single blades 4 and of the double blades 5, is preferably straight and the sides opposite to this cutting line are provided with non-slip ridges 9 intended to facilitate the use of the apparatus as retractor.

Lorsque la lame double 5 est mobile, les deux lames 4, 5 sont entraînées par la chape mobile 3 par l'intermédiaires de biellettes 10. When the double blade 5 is mobile, the two blades 4, 5 are driven by the mobile yoke 3 by means of link rods 10.

La commande du vérin hydraulique 2 s'effectue par une poignée tournante 11 ergonomique située à l'arrière dudit vérin et permettant d'obtenir soit le serrage des lames 4 et 5 pour la coupe, soit le déserrage permettant l'écartement des tôles. La poignée tournante comportera avantageusement un système de rappel de sécurité provoquant l'immobilisation des lames lorsque ladite poignée est lachée.  The hydraulic cylinder 2 is controlled by an ergonomic rotating handle 11 located at the rear of said cylinder and making it possible to obtain either the tightening of the blades 4 and 5 for cutting, or the loosening allowing the spacing of the sheets. The rotary handle will advantageously include a safety reminder system causing the blades to immobilize when said handle is released.

Grâce à sa simplicité, à sa facilité d'utilisation, à son volume réduit et à son faible coût de revient, le dispositif qui vient d'être décrit se prète particulièrement bien à la réalisation d'outillages de désincarcération peu encombrants, rapides à mettre en oeuvre et efficaces dans toutes les situations. Thanks to its simplicity, its ease of use, its reduced volume and its low cost price, the device which has just been described is particularly suitable for the production of space saving extrication tools, which are quick to install. effective and effective in all situations.

Le positionnement des divers éléments constitutifs donne à l'objet de l'invention un maximum d'effets utiles qui n'avaient pas été, à ce jour, obtenus par des dispositifs similaires.  The positioning of the various constituent elements gives the object of the invention a maximum of useful effects which had not, to date, been obtained by similar devices.

Claims (4)

REVENDICATIONS 10. Dispositif de cisaille écarteur comportant une lame double et une lame simple, destiné à la désincarcération des personnes enfermées dans des véhicules accidentés, 10. A retracting shear device comprising a double blade and a single blade, intended for the extrication of people trapped in damaged vehicles, caractérisé par la combinaison d'un ensemble de coupe constitué d'une lame simple (4) mobile et d'une lame double (5) fixe ou mobile pivotant autour d'un axe commun (6) fixe par rapport au corps de cisaille (1) monté sur un vérin hydraulique (2) à double effet dont le piston actionne la lame simple (4) ou les deux lames (4, 5) grâce à une chape mobile (3), les parties des lames opposées aux parties coupantes étant pourvues de stries antidérapantes (9) permettant à l'appareil de servir d'écarteur, et les flancs internes (7) de la lame double (5) étant évasés pour faciliter le dégagement des copeaux. characterized by the combination of a cutting assembly consisting of a simple movable blade (4) and a fixed or movable double blade (5) pivoting about a common axis (6) fixed relative to the shear body ( 1) mounted on a double-acting hydraulic cylinder (2) whose piston actuates the single blade (4) or the two blades (4, 5) by means of a movable yoke (3), the parts of the blades opposite to the cutting parts being provided with non-slip ridges (9) allowing the device to serve as a spacer, and the internal sides (7) of the double blade (5) being flared to facilitate the release of the chips. 20. Dispositif selon la revendication 1, se caractérisant par le fait que la lame double (5) est formée de deux lames (5', 5") solidaires symétriques par rapport à un plan passant entre elles. 20. Device according to claim 1, characterized in that the double blade (5) is formed of two blades (5 ', 5 ") integral symmetrical with respect to a plane passing between them. 30. Dispositif selon l'une quelconque des revendications précédentes, se caractérisant par le fait que les extrémités (8) des deux lames (5', 5") constituant la lame double (5) sont rendues solidaires par boulonnage, rivetage, soudure ou tout autre moyen, de manière à interdire toute possibilité d'écartement. 30. Device according to any one of the preceding claims, characterized in that the ends (8) of the two blades (5 ', 5 ") constituting the double blade (5) are made integral by bolting, riveting, welding or any other means, so as to prohibit any possibility of separation. 40. Dispositif selon l'une quelconque des revendications précédentes, se caractérisant par le fait que les lignes de coupe de la lame simple (4) et de la lame double (5), sont droites. 40. Device according to any one of the preceding claims, characterized in that the cutting lines of the single blade (4) and of the double blade (5) are straight. 50. Dispositif selon l'une quelconque des revendications précédentes, se caractérisant par le fait que la lame double (5) est mobile et que les deux lames (4, 5) sont entraînées par la chape mobile (3) par l'intermédiaires de biellettes (10). 50. Device according to any one of the preceding claims, characterized in that the double blade (5) is movable and that the two blades (4, 5) are driven by the movable yoke (3) by means of rods (10). 60. Dispositif selon l'une quelconque des revendications précédentes, se caractérisant par le fait que le vérin hydraulique (2) est commandé par une poignée tournante (11) ergonomique située à l'arrière dudit vérin et permettant d'obtenir le serrage ou le déserrage des lames (4, 5). 60. Device according to any one of the preceding claims, characterized in that the hydraulic cylinder (2) is controlled by an ergonomic rotating handle (11) located at the rear of said cylinder and making it possible to obtain the tightening or the loosening of the blades (4, 5). 70. Dispositif selon la revendication 6, se caractérisant par le fait que la poignée tournante (11) est équipée d'un système de rappel de sécurité provoquant l'immobilisation des lames (4, 5) lorsque ladite poignée tournante est lachée.  70. Device according to claim 6, characterized in that the rotary handle (11) is equipped with a safety return system causing the immobilization of the blades (4, 5) when said rotary handle is released.
FR9213265A 1992-10-27 1992-10-27 SPREAD SHEAR COMPRISING A DOUBLE BLADE AND A SINGLE BLADE. Expired - Fee Related FR2697187B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9213265A FR2697187B1 (en) 1992-10-27 1992-10-27 SPREAD SHEAR COMPRISING A DOUBLE BLADE AND A SINGLE BLADE.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9213265A FR2697187B1 (en) 1992-10-27 1992-10-27 SPREAD SHEAR COMPRISING A DOUBLE BLADE AND A SINGLE BLADE.

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FR2697187A1 true FR2697187A1 (en) 1994-04-29
FR2697187B1 FR2697187B1 (en) 1996-05-03

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FR9213265A Expired - Fee Related FR2697187B1 (en) 1992-10-27 1992-10-27 SPREAD SHEAR COMPRISING A DOUBLE BLADE AND A SINGLE BLADE.

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3898805A (en) * 1972-09-14 1975-08-12 Jr Lewis B Good Pump and intensifier unit arrangement for powered tools
FR2353206A7 (en) * 1974-06-12 1977-12-23 Cardona Georges Vehicle coachwork shears actuated by ram - has blade working between stationary counter-blades to form chip and leave slot for blade advance
FR2500344A1 (en) * 1981-02-23 1982-08-27 Parmentier Jean Scissor-action jack-actuated sheet metal shears - has centre blade between pair of counter blades with fulcrum tied to jack case
FR2503000A1 (en) * 1981-04-03 1982-10-08 Gallego Joseph Portable jack-actuated shears - has jack thrust to drive inter-articulated blades via pin jointed struts and piston yoke
FR2556266A1 (en) * 1983-12-07 1985-06-14 Gallego Joseph Hydraulic shears device for a crash-damaged vehicle

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3898805A (en) * 1972-09-14 1975-08-12 Jr Lewis B Good Pump and intensifier unit arrangement for powered tools
FR2353206A7 (en) * 1974-06-12 1977-12-23 Cardona Georges Vehicle coachwork shears actuated by ram - has blade working between stationary counter-blades to form chip and leave slot for blade advance
FR2500344A1 (en) * 1981-02-23 1982-08-27 Parmentier Jean Scissor-action jack-actuated sheet metal shears - has centre blade between pair of counter blades with fulcrum tied to jack case
FR2503000A1 (en) * 1981-04-03 1982-10-08 Gallego Joseph Portable jack-actuated shears - has jack thrust to drive inter-articulated blades via pin jointed struts and piston yoke
FR2556266A1 (en) * 1983-12-07 1985-06-14 Gallego Joseph Hydraulic shears device for a crash-damaged vehicle

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Publication number Publication date
FR2697187B1 (en) 1996-05-03

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