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FR2465124A1 - Energy absorbing fixing for e.g. guard rail to bridge pier - uses spring loaded bolt to expand sleeve in end of tubular arm and allows arm to pivot under impact - Google Patents

Energy absorbing fixing for e.g. guard rail to bridge pier - uses spring loaded bolt to expand sleeve in end of tubular arm and allows arm to pivot under impact Download PDF

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Publication number
FR2465124A1
FR2465124A1 FR7923263A FR7923263A FR2465124A1 FR 2465124 A1 FR2465124 A1 FR 2465124A1 FR 7923263 A FR7923263 A FR 7923263A FR 7923263 A FR7923263 A FR 7923263A FR 2465124 A1 FR2465124 A1 FR 2465124A1
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FR
France
Prior art keywords
support
arm
shock
base
screw
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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Withdrawn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
FR7923263A
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French (fr)
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to FR7923263A priority Critical patent/FR2465124A1/en
Publication of FR2465124A1 publication Critical patent/FR2465124A1/en
Withdrawn legal-status Critical Current

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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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B2/00—Friction-grip releasable fastenings
    • F16B2/02—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening
    • F16B2/04—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening internal, i.e. with spreading action
    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B9/00—Connections of rods or tubular parts to flat surfaces at an angle
    • F16B9/05—Connections of rods or tubular parts to flat surfaces at an angle by way of an intermediate member
    • F16B9/056—Connections of rods or tubular parts to flat surfaces at an angle by way of an intermediate member the intermediate member extending through the flat surface; the rod or tubular part extending through the flat surface
    • 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
    • F16F3/00—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic
    • F16F3/08—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of a material having high internal friction, e.g. rubber
    • 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
    • F16F3/00—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic
    • F16F3/08—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of a material having high internal friction, e.g. rubber
    • F16F3/10—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of a material having high internal friction, e.g. rubber combined with springs made of steel or other material having low internal friction

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vibration Dampers (AREA)

Abstract

The fastener uses a spring loaded bolt (6) to effect the radial expansion of an elastomer sleeve (1) in the end of a tubular arm (12), thus, fixing the arm (12) relative to a support plate (8), and uses residual spring elasticity to permit angular arm movements without bolt fracture. The sleeve may house onto and into the arm, also housing onto a packing plate (4), and locating a cylindrical bell shaped ram (2) with clearance. A stepped bolt (6) is wound to compress the sleeve in the axial sense and to compress the spring partially.

Description

DISPOSITIF MULTIPLE DE FIXATION AMORTIE ET A DEBATTEMENT PRE-DETERMINE
La fixation rigide de nombreux objets ou accessoires présente des inconvénients ou un carqctère dangereux. C'est le cas pour ceux fixé en porte-à-faux sur des machines ou véhicules qui sont soumis aux vibrations transmises par leur support ou lorsqu'il s'agit de panneaux routiers représentent un danger en cas de choc.MULTIPLE FASTENING DEVICE WITH PREDETERMINED TRAVEL
The rigid fixing of many objects or accessories has drawbacks or a dangerous character. This is the case for those fixed in overhang on machines or vehicles which are subjected to vibrations transmitted by their support or in the case of road signs represent a danger in the event of impact.

Le présent dispositif dénommé 'statibloc' a pour but de remédier à ces inconvénients en assurant une fixation amortie avec la possibilité d'effacement sous une certaine charge ou choc. The present device called 'statibloc' aims to remedy these drawbacks by ensuring a damped fixing with the possibility of erasure under a certain load or shock.

II se compose Fig 1 d'une fourrure en élastomère (1) disposée autour d'une cloche (2) dont le rebord avant (3) appui sur la fourrure. Dans un logement de la collerette (7) de la fourrure se trouve une embase (4) qui en position de repos est séparée de la fourrure par un certain vide (5). Un boulon épaulé (6) traverse la cloche et l'embase qui est appuyée contre la face avant du support (S). Derrière ce support se trouve un moyen élastique (9) nommé amortisseur et qui entoure le boulon. Une rondelle (10) et un écrou (11) complètent le dispositif. It consists of Fig 1 of an elastomeric fur (1) disposed around a bell (2) whose front edge (3) bears on the fur. In a housing of the collar (7) of the fur there is a base (4) which in the rest position is separated from the fur by a certain vacuum (5). A shouldered bolt (6) passes through the bell and the base which is pressed against the front face of the support (S). Behind this support is an elastic means (9) called shock absorber and which surrounds the bolt. A washer (10) and a nut (11) complete the device.

Au moment de la fixation, ele' statibloc' est disposé de part et d'autre du support et le boulon légèrement serré pour que l'ensemble tienne en place. L'on enfile alors l'objet à fixer (12) qui est généralement un tube fixés cet objet. Un cylindre extérieur (13) de la fourrure permet un meilleur maintient avant l'immobilisation de ce tube et cela pour permettre de l'orienter dans le cas il est coudé. L'on procéde ensuite au serrage du boulon ce qui produit deux effets. When fixing, ele 'statibloc' is arranged on either side of the support and the bolt slightly tightened so that the whole holds in place. The object to be fixed is then put on (12) which is generally a tube fixed to this object. An outer cylinder (13) of the fur allows better support before immobilizing this tube and this to allow it to be oriented in the case it is bent. We then tighten the bolt which produces two effects.

Le premier consiste à rapprocher la cloche de l'embase et donc à fortement comprimer la fourrure entre le tube et la cloche ce qui assure une immobilisation totale du tube. Cette augmentation de compression est maximum lorsque la cloche est en contact avec l'embase; la fourrure étant alors complètement comprimée. The first consists in bringing the bell closer to the base and therefore in strongly compressing the fur between the tube and the bell, which ensures total immobilization of the tube. This increase in compression is maximum when the bell is in contact with the base; the fur then being completely compressed.

Le second consiste à comprimer l'amortisseur (9) entre le support (8) et la rondelle (10) jusqu'à buter Fig.7. C'est cette seconde fonction qui assure la fixation de l'objet, la charge de l'amortisseur en butée ayant été déterminée pour être nettement supérieure à l'action du poids de l'objet ou pour correspondre à un choc d'une intensité donnée. Cette précharge est appelée seuil de sécurité et l'on montre plus loin comment le faire varier. The second consists in compressing the shock absorber (9) between the support (8) and the washer (10) until it stops Fig.7. It is this second function which secures the object, the load of the shock absorber in abutment having been determined to be significantly greater than the action of the weight of the object or to correspond to a shock of an intensity given. This preload is called the safety threshold and we show below how to vary it.

Dons cette position de fixation, l'amortisseur n'est pas totalement comprimé et il reste une nouvelle possibilité de compression qui se fera dès qu'une contrainte supérieure au seuil de sécurité sera exercéd sur l'objet Ce dernier pivote en prenant appui sur le bord de l'em- base qui se trouve à l'opposé du point d'application de la contrainte en créant un bras de levier constitué par la distance entre le point de contact de l'embase avec le support et I' axe du 'statibloc' d'une part, et la distance qui sépare du point d'application de la contrainte sur l'objet du support. II est possible en conséquence en faisant varier la forme de l'embase ce qui rapproche ou léloigne son bord de l'axe du 'statibloc' de faire proportionnellement varier le seuil de sécurité suivant les directions. Cette disposition trouve une application dans cas de panneaux routiers dont l'effacement peut etre plus facile vers l'extérieur de la route ou d'un garde boue que l'on peut facilement soulever pour effectuer une réparation ou monter des chaînes; une cale disposée entre l'embase et le chassis maintenant le garde boue en position haute. In this fixing position, the shock absorber is not fully compressed and there remains a new possibility of compression which will take place as soon as a stress greater than the safety threshold is exerted on the object. The latter pivots by taking support on the edge of the base which is opposite the point of application of the stress by creating a lever arm constituted by the distance between the point of contact of the base with the support and the 'axis of the' statibloc 'on the one hand, and the distance between the point of application of the stress on the object of the support. It is therefore possible by varying the shape of the base which brings its edge closer or further away from the axis of the 'statibloc' to vary the safety threshold proportionally according to the directions. This arrangement finds an application in the case of road signs, the erasure of which can be easier towards the outside of the road or of a mudguard which can easily be lifted to carry out a repair or mount chains; a wedge arranged between the base and the chassis keeping the mudguard in the high position.

Il apparait que l'on peut également faire varier ce seuil de sécurité en jouant sur les autres éléments actifs du 'statibloc' : boulon, amortisseur, fourrure, et adapter ce dispositif à tout objet quelle que soit son poids ou sa position. De meme, la disposition relative des éléments du 'statibloc' permet de l'adapter à des contraintes ou chocs axiaux ou frontaux. It appears that one can also vary this safety threshold by playing on the other active elements of the 'statibloc': bolt, shock absorber, fur, and adapt this device to any object whatever its weight or its position. Likewise, the relative arrangement of the elements of the 'statibloc' makes it possible to adapt it to axial or frontal stresses or shocks.

De nombreuses variantes de ce dispositif peuvent etre utilisées. Many variants of this device can be used.

L'on peut remplacer la cloche par une pièce épaulée faisant office d'écrou Fig.2 placer l'amortisseur à l'intérieur de la cloche Fig.5. Dans le cas de chocs frontaux, utiliser deux amortisseurs disposés extérieurement à la cloche, la pièce à fixer étant logée à l'intérieur de la fourrure Fig.6. II est possible dans le cas d'objets longs, tels que pare-chocs ouflilissières de sécurité, d'utiliser plusieurslshtiblocl disposés régulièrement Fig.9. The bell can be replaced by a shoulder piece acting as a nut Fig.2 place the damper inside the bell Fig.5. In the event of frontal impacts, use two shock absorbers arranged outside the bell, the part to be fixed being housed inside the fur Fig. 6. It is possible in the case of long objects, such as bumpers or safety runners, to use several lshtiblocl arranged regularly Fig. 9.

Pour augmenter la souplesse du dispositif, le boulon peut être remplacé par un élément souple, tel que câble métallique, chaîne métallique, ou tout autre moyen connu. Cet élément souple étant muni à l'une de ses extrémités d'une tête entminant la pièce destinée à mettre en compression la fourrure, à l'autre extrémité d'un filetage pour assurer la mise sous tension de l'amortisseur. To increase the flexibility of the device, the bolt can be replaced by a flexible element, such as metal cable, metal chain, or any other known means. This flexible element being provided at one of its ends with a head bordering the part intended to compress the fur, at the other end of a thread to ensure the tensioning of the shock absorber.

Le moyen élastique dont estfait l'amortisseur peut être un empilage de rondelle ressort
Fig.1,2,5, un ressort à boudin Fig.3, une pièce en élastomère Fig.4 ou un élément hydraulique avec piston et clapet à simple effet taré à la fabrication au moment du montage.The elastic means of which the shock absorber is made can be a stack of spring washer
Fig. 1,2,5, a coil spring Fig. 3, an elastomer part Fig. 4 or a hydraulic element with piston and single-acting valve set at the time of manufacture at the time of assembly.

Pour assurer un positionnement du dispositif, il peut être utilisé une goupille 20 Fig.7 fixée sur l'embase et coopérant avec une ouverture 21 du support. Cette disposition est inutile dans tous les cas où il est utilisé plusieurs amortisseurs Fig.6 et 9.  To ensure positioning of the device, a pin 20 Fig.7 may be used fixed on the base and cooperating with an opening 21 in the support. This arrangement is unnecessary in all cases where several shock absorbers are used in Fig. 6 and 9.

Claims (4)

REVEND ICATlt)NSRESELL ICATlt) NS 1- Dispositif multiple caractérisé par le fait qu'il assure la fixation d'un objet sur son support son amortissement et son effacement par l'utilisation d'éléments élastiques mis sous contrainte.1- Multiple device characterized in that it ensures the fixing of an object on its support, its damping and its erasure by the use of elastic elements placed under stress. 2- Dispositif suivant la revendication t caractérisé par le fait que la fixation est obtenue par l'utilisation d'une élément élastique mis en compression par une vis épaulée, et tel, que lorsque l'épaulement de la vis est bloqué contre le support, le moyen élastique assure la fixation par plaquage de l'objet contre son support.2- Device according to claim t characterized in that the fixing is obtained by the use of an elastic element placed in compression by a shouldered screw, and such that when the shoulder of the screw is blocked against the support, the elastic means secures the object by pressing it against its support. 3- Dispositif suivant la revendication 1 caractérisé par le fait que l'amortissement est obtenu par une pièce en élastomère logée dans le volume créé entre l'objet O fixer, une pibce ser- vant d'écrou à la vis épaulée et l'embase, disposés de telle façon que ce volume soit réduit par l'action de la vis épaulée et assure la mise en compression de l'élément en élastomère contre les parois ce qui provoque l'adhérence de l'objet avec l'écrou et l'embase tout en continuant à l'isoler de son support.3- Device according to claim 1 characterized in that the damping is obtained by an elastomer part housed in the volume created between the object O fix, a piece serving as a nut to the shouldered screw and the base , arranged in such a way that this volume is reduced by the action of the shouldered screw and ensures the compression of the elastomer element against the walls, which causes the object to adhere to the nut and the base while continuing to isolate it from its support. 4- Dispositif suivant le revendication 1 caractérisé par le fait que l'effacement de l'objet lors d'un choc ou d'un effort anormal est obtenu par le complément de compression dont dispose l'élément élastique lorsque l'épaulement de la vis est bloqué contre le support, permettant l'articulation de l'ensemble autour du point du bord de l'embase en contact avec le support et situé à l'opposé du point d'application du choc ou de l'effort anormal sur l'objet et tel que le retour à sa position initiale après disparition du choc ou de l'effort anormal, soit assuré 5- Dispositif suivant les revendications t et 4 caractérisé par le fait que dans tous les cas ou un choc ou un effort anormal entrainerait une rotation axiale de l'objet, elle est empêchée par l'utilisation d'un moyen connu tel qu'un téton pénétrant dans un logement du support ou une section de forme polygonale de la vixépaulée coopérant aveo une ouverture similaire du support tout en permettant l'effacement objet de la revendication 4 6- Dispositif suivant les revendications 1, 4 et 5 caractérisé par le fait que l'orsque les chocs ou efforts sont par avance connus et localisés, la forme appropriée donnée à l'embase permet un effacement particulier de l'objet par une variation du bras de levier définie par les longueurs séparant le point de l'axe de la vis épaulée située dans le plan de la face extérieure du support de celle du bord extérieur de l'embase en contact avec cette face extérieure d'une part, la projection du point d'application du choc sur l'axe de la vis d'autre part, point et axe définissant un plan dans lequel se trouve inscrit le levier. 4- Device according to claim 1 characterized in that the erasure of the object during a shock or an abnormal force is obtained by the additional compression available to the elastic element when the shoulder of the screw is locked against the support, allowing the articulation of the assembly around the point of the edge of the base in contact with the support and located opposite the point of application of the shock or the abnormal force on the object and such that the return to its initial position after disappearance of the shock or abnormal force, be assured 5- Device according to claims t and 4 characterized in that in all cases or a shock or an abnormal force would cause a axial rotation of the object, it is prevented by the use of a known means such as a nipple penetrating into a housing of the support or a polygonal section of the vixepaulé cooperating with a similar opening of the support while allowing the erasing object of the claim n 4 6- Device according to claims 1, 4 and 5 characterized in that when the shocks or forces are known and localized in advance, the appropriate shape given to the base allows a particular erasure of the object by a variation of the lever arm defined by the lengths separating the point of the axis of the shouldered screw situated in the plane of the external face of the support from that of the external edge of the base in contact with this external face on the one hand, the projection of the point of application of the shock on the axis of the screw on the other hand, point and axis defining a plane in which the lever is located.
FR7923263A 1979-09-12 1979-09-12 Energy absorbing fixing for e.g. guard rail to bridge pier - uses spring loaded bolt to expand sleeve in end of tubular arm and allows arm to pivot under impact Withdrawn FR2465124A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7923263A FR2465124A1 (en) 1979-09-12 1979-09-12 Energy absorbing fixing for e.g. guard rail to bridge pier - uses spring loaded bolt to expand sleeve in end of tubular arm and allows arm to pivot under impact

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7923263A FR2465124A1 (en) 1979-09-12 1979-09-12 Energy absorbing fixing for e.g. guard rail to bridge pier - uses spring loaded bolt to expand sleeve in end of tubular arm and allows arm to pivot under impact

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FR2465124A1 true FR2465124A1 (en) 1981-03-20

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FR7923263A Withdrawn FR2465124A1 (en) 1979-09-12 1979-09-12 Energy absorbing fixing for e.g. guard rail to bridge pier - uses spring loaded bolt to expand sleeve in end of tubular arm and allows arm to pivot under impact

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0077042A3 (en) * 1981-10-08 1983-09-21 Licentia Patent-Verwaltungs-Gmbh Damper for tilting oscillations between a foundation and a base plate of an equipment, in particular of a high tension switch device installed in seismic areas
EP0378975A1 (en) * 1989-01-04 1990-07-25 PEISA S.r.L. Means for securing the base and the articulation of a projection to a tubular standard, particularly of a table lamp and a floor lamp
FR2718811A1 (en) * 1994-04-18 1995-10-20 Freudenberg Carl Elastic fixing device for fixing a housing to an internal combustion engine with vibration decoupling.
AT402330B (en) * 1991-09-11 1997-04-25 Avl Verbrennungskraft Messtech Engine block of an internal combustion engine
CN102330229A (en) * 2011-06-19 2012-01-25 无锡市新康纺机有限公司 Short vertical axis connector used on coarse spinner

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1602922A (en) * 1925-09-04 1926-10-12 Int Motor Co Bumper
US1701400A (en) * 1925-08-03 1929-02-05 Gen Motors Corp Motor support
US1810717A (en) * 1927-02-11 1931-06-16 Hugh C Lord Cushion mounting
DE941577C (en) * 1953-04-21 1956-04-12 Friedrich Wilhelm Moeller Coupling for the detachable connection of parts
US3313567A (en) * 1965-02-23 1967-04-11 Sturman Oded Eddie Belleville spring biased bumper
FR1569753A (en) * 1968-03-14 1969-06-06
US3717224A (en) * 1971-11-15 1973-02-20 Omark Industries Inc Two stage energy absorber
FR2179072A1 (en) * 1972-04-04 1973-11-16 Gen Electric
DE2225880A1 (en) * 1972-05-27 1973-12-06 Opel Adam Ag BUMPER FOR MOTOR VEHICLES

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1701400A (en) * 1925-08-03 1929-02-05 Gen Motors Corp Motor support
US1602922A (en) * 1925-09-04 1926-10-12 Int Motor Co Bumper
US1810717A (en) * 1927-02-11 1931-06-16 Hugh C Lord Cushion mounting
DE941577C (en) * 1953-04-21 1956-04-12 Friedrich Wilhelm Moeller Coupling for the detachable connection of parts
US3313567A (en) * 1965-02-23 1967-04-11 Sturman Oded Eddie Belleville spring biased bumper
FR1569753A (en) * 1968-03-14 1969-06-06
US3717224A (en) * 1971-11-15 1973-02-20 Omark Industries Inc Two stage energy absorber
FR2179072A1 (en) * 1972-04-04 1973-11-16 Gen Electric
DE2225880A1 (en) * 1972-05-27 1973-12-06 Opel Adam Ag BUMPER FOR MOTOR VEHICLES

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0077042A3 (en) * 1981-10-08 1983-09-21 Licentia Patent-Verwaltungs-Gmbh Damper for tilting oscillations between a foundation and a base plate of an equipment, in particular of a high tension switch device installed in seismic areas
EP0378975A1 (en) * 1989-01-04 1990-07-25 PEISA S.r.L. Means for securing the base and the articulation of a projection to a tubular standard, particularly of a table lamp and a floor lamp
AT402330B (en) * 1991-09-11 1997-04-25 Avl Verbrennungskraft Messtech Engine block of an internal combustion engine
FR2718811A1 (en) * 1994-04-18 1995-10-20 Freudenberg Carl Elastic fixing device for fixing a housing to an internal combustion engine with vibration decoupling.
CN102330229A (en) * 2011-06-19 2012-01-25 无锡市新康纺机有限公司 Short vertical axis connector used on coarse spinner

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