FR2711241A1 - Semiautomatic device with oscillating vice for flexion (bending) tests on wires - Google Patents

Semiautomatic device with oscillating vice for flexion (bending) tests on wires Download PDF

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Publication number
FR2711241A1
FR2711241A1 FR9312531A FR9312531A FR2711241A1 FR 2711241 A1 FR2711241 A1 FR 2711241A1 FR 9312531 A FR9312531 A FR 9312531A FR 9312531 A FR9312531 A FR 9312531A FR 2711241 A1 FR2711241 A1 FR 2711241A1
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France
Prior art keywords
vice
motor
balance
oscillating
wires
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Granted
Application number
FR9312531A
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French (fr)
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FR2711241B1 (en
Inventor
Quissola Claude
Guerere Michel
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MARSEILLE LABO INTERREG CONCUR
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MARSEILLE LABO INTERREG CONCUR
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Priority to FR9312531A priority Critical patent/FR2711241B1/en
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Application granted granted Critical
Publication of FR2711241B1 publication Critical patent/FR2711241B1/en
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Expired - Fee Related legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Toys (AREA)

Abstract

The invention relates to a device making it possible to apply, reproducibly, flexion strain cycles to wires in order to assess their breaking strength. The device is constituted by two vices clamping the ends of the sample to be tested. A fixed vice is secured to a base (2). The other vice (6) oscillates with a defined amplitude above the first vice, by virtue of a mechanical device constituted by a rod (7) connecting it to a wheel (5) driven by an electric motor (4). The speed of rotation of the motor driving the oscillating vice, as well as its operation and rest cycles, are respectively preset using an electronic variator and timer. The device according to the invention is particularly intended for testing the safety of toys containing wires.

Description

DESCRIPTION
La présente invention concerne un dispositif semi-automatique d'essai de flexibilité des fils métalliques utiliés pour la fabrication des jouets.DESCRIPTION
The present invention relates to a semi-automatic device for testing the flexibility of metal wires used for the manufacture of toys.

Le dispositif permet de vérifier une exigence réglementaire de sécurité applicable aux jouets, conformément aux dispositions décrites au paragraphe 4.1 de la norme d'application obligatoire NF EN 71.1 d'avril 1989, d'indice de classement S51 -212-" Sécurité des jouets - partie 1: propriétés mécaniques et physiques". The device makes it possible to verify a regulatory safety requirement applicable to toys, in accordance with the provisions described in paragraph 4.1 of the compulsory application standard NF EN 71.1 of April 1989, of classification index S51 -212- "Safety of toys - part 1: mechanical and physical properties ".

L'application manuelle d'un cycle de contraintes normalisé à un fil métallique afin d'apprécier sa résistance à la rupture est difficilement reproductible. The manual application of a standardized stress cycle to a metal wire in order to assess its breaking strength is difficult to reproduce.

Le dispositif selon l'invention permet de remédier à cet inconvénient en automatisant l'application du cycle de contraintes dont la configuration est au préalable ajustée. The device according to the invention overcomes this drawback by automating the application of the stress cycle, the configuration of which is previously adjusted.

Le dispositif selon l'invention est particulièrement destiné au contrôle en laboratoire ou en fabrication de la sécurité des jouets renfermant des fils métalliques. The device according to the invention is particularly intended for controlling in the laboratory or in manufacturing the safety of toys containing metallic wires.

Le dispositif selon l'invention comporte deux étaux dont les mors enserrent les extrémités de l'échantillon à tester (fil métallique positionné verticalement lorsque le dispositif selon l'invention est au repos). The device according to the invention comprises two clamps, the jaws of which enclose the ends of the sample to be tested (metal wire positioned vertically when the device according to the invention is at rest).

L'un des étaux est solidaire d'un socle, alors que l'autre effectue un mouvement de balancier de soixante degrés dans un sens, puis cent vingt degrés en sens inverse, et retour en position initiale ( un cycle). L'essai est réalisé trente fois avec une fréquence d'un cycle par seconde, avec arrêt de vingt secondes tous les dix cycles comme l'exige la norme. One of the vices is secured to a base, while the other performs a pendulum movement of sixty degrees in one direction, then one hundred and twenty degrees in the opposite direction, and return to the initial position (a cycle). The test is carried out thirty times with a frequency of one cycle per second, with a stop of twenty seconds every ten cycles as required by the standard.

Ce travail est effectué grâce à un moteur électrique standard d'entraînement: 60 tr/min, 115/230 V, couplé à un temporisateur et variateur électroniques. This work is carried out using a standard electric drive motor: 60 rpm, 115/230 V, coupled to an electronic timer and variator.

En effet, I'axe du moteur comporte un plat qui permet l'entraînement d'une roue pleine dans un mouvement de rotation autour de leur axe commun. Indeed, the axis of the motor comprises a flat which allows the driving of a solid wheel in a rotational movement around their common axis.

L'étau-balancier et cette roue sont liés par une tige équipée en ses extrémités de roulements qui rendent possible la conversion du mouvement rotatif que crée le moteur en ce mouvement de balancier qu'acquiert l'étau. La position du point de jonction entre la tige et la roue conditionne l'amplitude des oscillations de l'étau balancier. The balance vice and this wheel are linked by a rod fitted at its ends with bearings which make it possible to convert the rotary movement that the motor creates into this balance movement that the vice acquires. The position of the junction point between the rod and the wheel conditions the amplitude of the oscillations of the balance vice.

La reproduction de photographie ainsi que les dessins annexés illustrent le dispositif selon l'invention:
La figure 1 est une reproduction de la photographie de ce dispositif dans sa position initiale et au repos, découvrant le moteur normalement dissimulé sous un boîtier.The reproduction of the photograph as well as the attached drawings illustrate the device according to the invention:
Figure 1 is a reproduction of the photograph of this device in its initial position and at rest, revealing the motor normally concealed in a housing.

La figure 2 représente la vue de face de l'étau-balancier. Figure 2 shows the front view of the balance vice.

La figure 3 représente la vue de gauche en coupe de ce même étaubalancier. FIG. 3 represents the left view in section of this same crossover.

En référence à ces illustrations, on observe que le dispositif selon l'invention présente une plaque (1) fixée verticalement au socle (2) par une équerre (3). With reference to these illustrations, it can be seen that the device according to the invention has a plate (1) fixed vertically to the base (2) by a bracket (3).

Cette plaque (1) comporte deux trous principaux destinés à loger deux axes de rotation. This plate (1) has two main holes intended to accommodate two axes of rotation.

Sur la partie supérieure de cette plaque (1), un axe de rotation relie un moteur d'entraînement (4), dont les références ont été précédemment énoncées, à une roue pleine (5), et sur sa partie inférieure, un autre axe maintient l'étaubalancier (6). On the upper part of this plate (1), an axis of rotation connects a drive motor (4), the references of which have been previously stated, to a solid wheel (5), and on its lower part, another axis maintains the balance (6).

Cet étau-balancier est constitué d'une tête (10) qui, au repos est horizontale (c'est l'étau lui-même ) et d'un corps (11) sur lequel cette dernière est fixée. This balance vice consists of a head (10) which, at rest is horizontal (it is the vice itself) and of a body (11) on which the latter is fixed.

La roue (5) et l'étau-balancier (6) sont liés par une tige (7) munie en ses extrémités d'un système de roulements. The wheel (5) and the balance vice (6) are linked by a rod (7) provided at its ends with a bearing system.

Un boîtier (8) vient protéger le moteur (4) en ne laissant paraître que sa prise d'alimentation électrique (9) encastrée dans un côté de ce premier. A housing (8) protects the motor (4) by leaving only its electrical supply socket (9) embedded in one side of the first.

Ainsi l'utilisateur branche le moteur (4) qui entraîne la roue (5) dans un mouvement de rotation. L'extrémité de la tige, prise dans la roue (5) suit par conséquent cette translation circulaire tandis que l'autre extrémité fixée au corps (11) de l'étau-balancier (6) va et vient, inscrivant sa trajectoire sur un arc de cercle. Thus the user connects the motor (4) which drives the wheel (5) in a rotational movement. The end of the rod, taken in the wheel (5) consequently follows this circular translation while the other end fixed to the body (11) of the balance vice (6) comes and goes, registering its trajectory on a arc.

Cette trajectoire décrite verticalement par la partie du corps de l'étaubalancier, est reproduite simultanément par sa tête (10) mais dans une autre orientation, c'est-à-dire horizontalement. This trajectory described vertically by the body part of the calibrator, is reproduced simultaneously by its head (10) but in another orientation, that is to say horizontally.

Le socle (2) du dispositif selon l'invention immobilise un deuxième étau qui se trouve exactement sous l'étau-balancier, lorsque celui-ci se trouve dans sa position initiale au repos. The base (2) of the device according to the invention immobilizes a second vice which is located exactly under the balance vice, when the latter is in its initial position at rest.

A titre d'exemple non limitatif, le dispositif aura un encombrement de l'ordre de 23 cm x 22 cm x 20 cm. By way of nonlimiting example, the device will have a space requirement of the order of 23 cm x 22 cm x 20 cm.

Le dispositif selon l'invention est particulièrement destiné à tester la résistance à la rupture par flexion des fils métalliques utilisés dans la fabrication des jouets.  The device according to the invention is particularly intended for testing the resistance to rupture by bending of metal wires used in the manufacture of toys.

Claims (7)

REVENDICATIONS 1) Dispositif pour appliquer à des fils métalliques un cycle normalisé de contraintes par flexions; dispositif caractérisé en ce qu'il comporte un étau oscillant (6) relié à un moteur électrique (4) par l'intermédiaire d'une tige (7) et d'un disque métalliques (5). 1) Device for applying to metal wires a standardized cycle of bending stresses; device characterized in that it comprises an oscillating vice (6) connected to an electric motor (4) via a rod (7) and a metal disc (5). 2) Dispositif selon la revendication 1 caractérisé en ce que la vitesse de rotation du moteur est commandée par un variateur électronique. 2) Device according to claim 1 characterized in that the motor rotation speed is controlled by an electronic variator. 3) Dispositif selon la revendication 1 caractérisé en ce que le nombre et la fréquence des cycles d'essai sont programmés sur un temporisateur électronique couplé au moteur. 3) Device according to claim 1 characterized in that the number and frequency of the test cycles are programmed on an electronic timer coupled to the motor. 4) Dispositif selon la revendication 1 caractérisé en ce que l'étau-balancier (6), possède une forme appropriée pour transformer une trajectoire d'arc de cercle de la direction verticale à la direction horizontale. 4) Device according to claim 1 characterized in that the balance vice (6), has a suitable shape for transforming a circular arc trajectory from the vertical direction to the horizontal direction. 4) Dispositif selon la revendication 1 et la revendication 4 caractérisé en ce que la longueur de la tige (7) ainsi que sa jonction sur la roue (5) sont telles qu'elles permettent la conversion du mouvement de rotation du moteur (4) en un mouvement oscillant d'amplitude définie de l'étau-balancier (6). 4) Device according to claim 1 and claim 4 characterized in that the length of the rod (7) and its junction on the wheel (5) are such that they allow the conversion of the rotational movement of the motor (4) in an oscillating movement of defined amplitude of the balance vice (6). 5) Dispositif selon la revendication 1 caractérisé en ce que la plaque verticale (1) fixée par l'équerre (3), maintient d'une part l'axe de rotation commun du moteur (4) et de la roue (5), d'autre part l'axe de balancement de l'étau-balancier (6). 5) Device according to claim 1 characterized in that the vertical plate (1) fixed by the bracket (3), maintains on the one hand the common axis of rotation of the motor (4) and the wheel (5), on the other hand the axis of swing of the balance vice (6). 6) Dispositif selon la revendication 1 caractérisé en ce que l'étau est fixé au socle (2), de telle sorte que ses mors se trouvent exactement sous ceux de l'étaubalancier lorsque ce dernier est dans sa position de repos. 6) Device according to claim 1 characterized in that the vice is fixed to the base (2), so that its jaws are exactly under those of the vise when the latter is in its rest position. 7) Dispositif selon l'une des précédentes revendications caractérisé en ce qu'il comporte un boîtier (8) protégeant le moteur (4).  7) Device according to one of the preceding claims characterized in that it comprises a housing (8) protecting the motor (4).
FR9312531A 1993-10-14 1993-10-14 Semi-automatic device with oscillating vice for bending tests of metal wires. Expired - Fee Related FR2711241B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9312531A FR2711241B1 (en) 1993-10-14 1993-10-14 Semi-automatic device with oscillating vice for bending tests of metal wires.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9312531A FR2711241B1 (en) 1993-10-14 1993-10-14 Semi-automatic device with oscillating vice for bending tests of metal wires.

Publications (2)

Publication Number Publication Date
FR2711241A1 true FR2711241A1 (en) 1995-04-21
FR2711241B1 FR2711241B1 (en) 1995-12-29

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1136810A3 (en) * 2000-03-22 2002-02-06 Sumitomo Wiring Systems, Ltd. Bend test for a wire harness and device for such a test
US6591692B2 (en) * 2000-03-27 2003-07-15 Sumitomo Wiring Systems, Ltd. Bend-test device for wire harnesses
CN102607975A (en) * 2012-02-22 2012-07-25 南京航空航天大学 Miniature fatigue tester for metallic wires
CN102636399A (en) * 2012-03-26 2012-08-15 南京航空航天大学 Testing device for testing swing fatigue performance of connecting leads

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104535434B (en) * 2015-01-16 2018-05-11 奇瑞新能源汽车技术有限公司 A kind of bending property testing device of electric car charger interface

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR429795A (en) * 1911-05-17 1911-09-30 The Roussillon Tyres And International Rubber Cy L Apparatus for testing the resistance of metal wires to bending
US1951908A (en) * 1929-09-11 1934-03-20 Bell Telephone Labor Inc Resistance testing machine
US2258276A (en) * 1939-04-07 1941-10-07 Bell Telephone Labor Inc Apparatus for measuring the elastic properties of materials
FR924713A (en) * 1942-05-22 1947-08-13 Groupement Francais Pour Le Developpement Des Recherches Aeronautiques Machine for testing materials in alternating bending
US3518877A (en) * 1967-10-10 1970-07-07 British Petroleum Co Apparatus for testing plastic materials

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR429795A (en) * 1911-05-17 1911-09-30 The Roussillon Tyres And International Rubber Cy L Apparatus for testing the resistance of metal wires to bending
US1951908A (en) * 1929-09-11 1934-03-20 Bell Telephone Labor Inc Resistance testing machine
US2258276A (en) * 1939-04-07 1941-10-07 Bell Telephone Labor Inc Apparatus for measuring the elastic properties of materials
FR924713A (en) * 1942-05-22 1947-08-13 Groupement Francais Pour Le Developpement Des Recherches Aeronautiques Machine for testing materials in alternating bending
US3518877A (en) * 1967-10-10 1970-07-07 British Petroleum Co Apparatus for testing plastic materials

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1136810A3 (en) * 2000-03-22 2002-02-06 Sumitomo Wiring Systems, Ltd. Bend test for a wire harness and device for such a test
US6494104B2 (en) 2000-03-22 2002-12-17 Sumitomo Wiring Systems, Ltd. Bend test for a wire harness and device for such a test
US6591692B2 (en) * 2000-03-27 2003-07-15 Sumitomo Wiring Systems, Ltd. Bend-test device for wire harnesses
CN102607975A (en) * 2012-02-22 2012-07-25 南京航空航天大学 Miniature fatigue tester for metallic wires
CN102607975B (en) * 2012-02-22 2014-08-13 南京航空航天大学 Miniature fatigue tester for metallic wires
CN102636399A (en) * 2012-03-26 2012-08-15 南京航空航天大学 Testing device for testing swing fatigue performance of connecting leads

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Publication number Publication date
FR2711241B1 (en) 1995-12-29

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