EP0625226A1 - Drive mechanism for retractable bollards - Google Patents

Drive mechanism for retractable bollards

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Publication number
EP0625226A1
EP0625226A1 EP93924664A EP93924664A EP0625226A1 EP 0625226 A1 EP0625226 A1 EP 0625226A1 EP 93924664 A EP93924664 A EP 93924664A EP 93924664 A EP93924664 A EP 93924664A EP 0625226 A1 EP0625226 A1 EP 0625226A1
Authority
EP
European Patent Office
Prior art keywords
parts
helical
mechanism according
rotation
stud
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.)
Withdrawn
Application number
EP93924664A
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German (de)
French (fr)
Inventor
Jacques Ancel
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Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0625226A1 publication Critical patent/EP0625226A1/en
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F13/00—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions
    • E01F13/04—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions movable to allow or prevent passage
    • E01F13/044—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions movable to allow or prevent passage the barrier being formed by obstructing members situated on, flush with, or below the traffic surface, e.g. with inflatable members on the surface
    • E01F13/046—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions movable to allow or prevent passage the barrier being formed by obstructing members situated on, flush with, or below the traffic surface, e.g. with inflatable members on the surface the obstructing members moving up in a translatory motion, e.g. telescopic barrier posts

Definitions

  • the invention relates to an elastic mechanism for transforming a rotary movement into a linear movement, intended in particular to move retractable terminals.
  • Retractable bollards are an elegant and relatively aesthetic means, compared to a barrier for example, to control the access of motor vehicles to certain areas, pedestrian in particular.
  • a terminal located on the roadway can retract into the ground using various motor means, in order to allow the passage of selected vehicles (residents, priority vehicles, delivery people, for example) .
  • Fig. 1 The different models existing to date all consist (Fig. 1) of a movable block (2) retractable in a buried box (l), which also contains all or part of the mechanism intended to move the block (2) .
  • These mechanisms are all jacks (3): hydraulic, pneumatic, electric, or others, depending on the manufacturer.
  • a cylinder constitutes a variable volume system, which can pose very troublesome sealing problems, especially when it is an electric cylinder.
  • the device according to the invention overcomes these drawbacks. It comprises, according to a first characteristic, a connection mechanism between a rotating motor means (therefore a fixed volume system, in general an electric geared motor group) and the movable stud, making it possible to transform the rotational movement of the axis motor unit output in a linear translational movement communicated to the movable stud.
  • This mechanism requires for its installation a box whose height can be limited to about h + 25 mm, h being the useful height of the movable stud (2), that is to say the height deployed above ground. It can also constitute an elastic connection between the motor and the stud, thus protecting the assembly against shocks.
  • FIG. 1 shows in section the device according to the invention.
  • Figure 3 shows a variant of this device.
  • the device consists of two identical parts (A) and (B), helical, of round, square or other section, joined at their upper part by any suitable means, or even manufactured in one holding as in Figure 2 (hatching at ⁇ 45 ° were however used for understanding).
  • These two helicopters (A) and (B), fixed in rotation, are nested one inside the other with an offset of half a step and enclosed in the assembly stud (2) - slide (7).
  • the lower ends (A ') and (B'), opposite 180 ° can be left free or maintained by any means either to increase the rigidity of the assembly, or for any other reason. In the case of FIG. 2, they have been bent outwards and inserted into two holes in the slide (7).
  • An axis (4) inserted horizontally in the parts (A) and (B) is provided at its ends with two rollers (Gl) and (G2) which bear on the two helicoid (A) and (B), which serve them raceway.
  • the slide (7) can actuate a microswitch (not shown) which will control the stopping of the motor, this stopping being able to be obtained by any other means.
  • a rotational movement, opposite to the previous one, of the shaft (5), will cause the parts (A) and (B), the collar ( ⁇ ), the slide (7) and the stud (2) to descend.
  • the flange ( ⁇ ) comes to rest on the spacer (9)
  • (A) and (B) will compress slightly before the engine stops, keeping the stud (2) firmly in the low position.
  • the rotation movement - displacement relationship described here can be reversed by reversing the pitch of the helicoid (A) and (B).
  • the system can be made reversible by choosing the pitch of (A) and (B), and the type of gear motor.
  • the term reversible system designates here that in which a translational force applied to the ⁇ lot (2) will result in a rotation of the axes (4) and (5).
  • the speed of movement of the stud (2) is determined by the pitch of the helicoid (A) and (B) as well as by the speed of rotation of the axis (4).
  • the pitch of the helicoids can be made variable so as to obtain, for a constant speed of rotation, a variable speed of translation.
  • the helical parts (A) and (B) can be replaced by a single cylinder in which one will have practiced, by milling in particular, two helical grooves offset by half a step, and which will serve as a rolling path for the two rollers (Gl) and (G2).
  • the pitch of the grooves is constant or not.
  • rollers (Gl) and (G2) can be substituted for any parts capable of bearing and sliding on the raceways.
  • the two pieces (A) and (B) are nested one inside the other so that two consecutive turns (Sl) and (S2) belong to each of the pieces (A) and (B) and are separated by half a step from the helicoids.
  • the pieces (A) and (B) are joined at their ends or are left free, and can be fixed to the ⁇ lot (2) which contains them.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Transmission Devices (AREA)

Abstract

L'invention concerne un mécanisme élastique transformant le mouvement de rotation d'un axe de sortie de moto-réducteur (6), en déplacement linéaire destiné en particulier à mouvoir des bornes rétractables (7). Il est constitué de deux pièces hélicoïdales (A) et (B) fixes en rotation et décalées d'un demi pas, enfermées dans le plot (2) à mouvoir, et qui servent de chemin de roulement à deux galets (G1) et (G2) situés aux extrémités d'un axe (4) entraîné en rotation par un axe moteur (5). La rotation de l'axe (4) entraîne le déplacement linéaire des pièces (A) et (B) et du plot (2) qui les contient. En fin de course, (A) et (B) se compriment légèrement, formant une liaison élastique entre le plot (2) déployé et l'ensemble moteur.The invention relates to an elastic mechanism transforming the rotational movement of a gear motor output shaft (6) into linear displacement intended in particular to move retractable bollards (7). It consists of two helical parts (A) and (B) fixed in rotation and offset by half a pitch, enclosed in the block (2) to be moved, and which serve as a raceway for two rollers (G1) and ( G2) located at the ends of a shaft (4) driven in rotation by a motor shaft (5). The rotation of the axis (4) causes the linear displacement of the parts (A) and (B) and of the block (2) which contains them. At the end of travel, (A) and (B) compress slightly, forming an elastic connection between the stud (2) deployed and the motor assembly.

Description

MÉCANISME D'ENTRAINEMENT POUR BORNES RÉTRACTABLES DRIVE MECHANISM FOR RETRACTABLE TERMINALS
L'invention concerne un mécanisme élastique de transformation d'un mouvement de rotation en déplacement linéaire, destiné en particulier à mouvoir des bornes rétractables.The invention relates to an elastic mechanism for transforming a rotary movement into a linear movement, intended in particular to move retractable terminals.
Les bornes rétractables constituent un moyen élégant et relativement esthétique, comparé à une barrière par exemple, de contrôler l'accès des véhicules automobiles à certaines zones, piétonnes notamment.Retractable bollards are an elegant and relatively aesthetic means, compared to a barrier for example, to control the access of motor vehicles to certain areas, pedestrian in particular.
Dans ce mode de contrôle d'accès, une borne située sur la chaussée peut s'escamoter dans le sol à l'aide de moyens moteur divers, afin de permettre le passage de véhicules sélectionnés (riverains, véhicules prioritaires, livreurs, par exemple).In this access control mode, a terminal located on the roadway can retract into the ground using various motor means, in order to allow the passage of selected vehicles (residents, priority vehicles, delivery people, for example) .
Les différents modèles existant à ce jour sont tous constitués (Fig. 1) d'un plot mobile(2) rétractable dans un caisson(l) enterré, et qui contient en outre tout ou partie du mécanisme destiné à mouvoir le plot(2). Ces mécanismes sont tous des vérins(3): hydrauliques, pneumatiques, électriques, ou autres, selon le fabricant.The different models existing to date all consist (Fig. 1) of a movable block (2) retractable in a buried box (l), which also contains all or part of the mechanism intended to move the block (2) . These mechanisms are all jacks (3): hydraulic, pneumatic, electric, or others, depending on the manufacturer.
Ces vérins nécessitent pour être logés des hauteurs de caisson(l) importantes, de l'ordre de 800 mm ou plus pour un plot mobile se déployant à 400 mm au-dessus du niveau du sol. Un caisson d'une telle hauteur nécessite pour être enterré le creusement d'un trou d'environ 1 mètre de profondeur, ce qui est prohibitif dans bien des cas lorsqu'on sait la complexité du sous-sol urbain. Dans d'autre cas, des locaux situés au-dessous limitent la profondeur des caissons que l'on peut installer. Les opérations de maintenance et de réparation sont également rendues plus difficiles avec la profondeur, tandis que les coûts de fabrication et d'installation augmentent avec celle-ci.These cylinders require, to be housed, significant heights of box (l), of the order of 800 mm or more for a mobile stud deploying 400 mm above ground level. To be buried, a box of this height requires the digging of a hole about 1 meter deep, which is prohibitive in many cases when you know the complexity of the urban subsoil. In other cases, rooms located below limit the depth of the boxes that can be installed. Maintenance and repair operations are also made more difficult with depth, while manufacturing and installation costs increase with it.
D'autre part un vérin constitue un système à volume variable, qui peut poser des problèmes d'étanchéité très gênants, surtout lorsqu'il s'agit de vérins électriques.On the other hand, a cylinder constitutes a variable volume system, which can pose very troublesome sealing problems, especially when it is an electric cylinder.
Un autre inconvénient majeur de l'emploi des vérins pour la motorisation des bornes rétractables est qu'ils nécessitent(fig.l) une liaison entre la tige coulissante(4) du vérin et le plot mobile(2). Ainsi en cas de choc même relativement faible sur le plot(2), la tige(4) du vérin sera immanquablement faussée, ce qui entraînera une réparation coûteuse.Another major drawback of the use of jacks for the motorization of retractable bollards is that they require (fig.l) a connection between the sliding rod (4) of the jack and the movable stud (2). Thus in the event of even a relatively weak impact on the stud (2), the rod (4) of the jack will inevitably be distorted, which will entail an expensive repair.
FEUILLE DE REMPLACEMENT Le dispositif selon l'invention permet de remédier à ces inconvénients. Il comporte, selon une première caractéristique, un mécanisme de liaison entre un moyen moteur tournant (donc un système à volume fixe, en général un groupe moto-réducteur électrique) et le plot mobile, permettant de transformer le mouvement de rotation de l'axe de sortie du groupe moteur en un mouvement de translation linéaire communiqué au plot mobile. Ce mécanisme nécessite pour son installation un caisson dont la hauteur peut être limitée à environ h+25 mm, h étant la hauteur utile du plot mobile(2), c'est à dire la hauteur déployée hors sol. Il peut de plus constituer une liaison élastique entre le moteur et le plot, protégeant ainsi l'ensemble contre les chocs.REPLACEMENT SHEET The device according to the invention overcomes these drawbacks. It comprises, according to a first characteristic, a connection mechanism between a rotating motor means (therefore a fixed volume system, in general an electric geared motor group) and the movable stud, making it possible to transform the rotational movement of the axis motor unit output in a linear translational movement communicated to the movable stud. This mechanism requires for its installation a box whose height can be limited to about h + 25 mm, h being the useful height of the movable stud (2), that is to say the height deployed above ground. It can also constitute an elastic connection between the motor and the stud, thus protecting the assembly against shocks.
La figure 2 représente en coupe le dispositif selon l'invention.Figure 2 shows in section the device according to the invention.
La figure 3 représente une variante de ce dispositif.Figure 3 shows a variant of this device.
En référence à la figure 2, le dispositif se compose de deux pièces(A) et (B) identiques, hélicoïdales, de section ronde, carrée ou autre, réunies à leur partie supérieure par tout moyen convenant, ou encore fabriquées d'un seul tenant comme dans la figure 2 (des hachures à ± 45° ont cependant été mises pour la compréhension). Ces deux hélicoïdes(A) et(B), fixes en rotation, sont imbriquées l'une dans l'autre avec un décalage d'un demi-pas et enfermées dans l'ensemble plot(2) - coulisseau(7). Les extrémités inférieures(A') et(B'), opposées à 180° peuvent être laissées libres ou maintenues par un moyen quelconque soit pour augmenter la rigidité de l'ensemble, soit pour toute autre raison. Dans le cas de la figure 2, elles ont été recourbées vers l'extérieur et insérées dans deux perçages du coulisseau(7).With reference to FIG. 2, the device consists of two identical parts (A) and (B), helical, of round, square or other section, joined at their upper part by any suitable means, or even manufactured in one holding as in Figure 2 (hatching at ± 45 ° were however used for understanding). These two helicopters (A) and (B), fixed in rotation, are nested one inside the other with an offset of half a step and enclosed in the assembly stud (2) - slide (7). The lower ends (A ') and (B'), opposite 180 ° can be left free or maintained by any means either to increase the rigidity of the assembly, or for any other reason. In the case of FIG. 2, they have been bent outwards and inserted into two holes in the slide (7).
Un axe(4) inséré horizontalement dans les pièces(A) et(B) est muni à ses extrémités de deux galets(Gl) et(G2) qui prennent appui sur les deux hélicoïdes(A) et(B), qui leur servent de chemin de roulement.An axis (4) inserted horizontally in the parts (A) and (B) is provided at its ends with two rollers (Gl) and (G2) which bear on the two helicoid (A) and (B), which serve them raceway.
Ainsi un mouvement de rotation imprimé à l'axe(4) par l'axe de sortie(5) du moto-réducteur(6) aura pour effet, si le mouvement de rotation est inverse, vu de dessus, de celui des aiguilles d'une montre, de faire monter les pièces(A) et(B) et par conséquent le plot(2) et le coulisseau(7). Le moteur n'étant pas libre en translation, ce sont les pièces(A) et(B) qui se déplacent.Thus a rotational movement imparted to the axis (4) by the output axis (5) of the geared motor (6) will have the effect, if the rotational movement is reversed, seen from above, of that of the needles d '' a watch, to mount the pieces (A) and (B) and by therefore the stud (2) and the slide (7). The motor is not free in translation, it is the parts (A) and (B) which move.
Lorsque la collerette(lO) viendra en butée sur le joint suρérieur(3), le plot(2) s'immobilisera mais les pièces(A) et(B) continueront à se déplacer, entraînant le coulisseau(7) et se comprimant, si elles sont fabriquées dans une matière élastique (acier à ressorts). Dans sa course, le coulisseau(7) peut actionner un microrupteur (non représenté) qui commandera l'arrêt du moteur, cet arrêt pouvant être obtenu par tout autre moyen.When the flange (10) comes to a stop on the upper seal (3), the stud (2) will stop but the parts (A) and (B) will continue to move, causing the slide (7) and compressing, if they are made of an elastic material (spring steel). In its travel, the slide (7) can actuate a microswitch (not shown) which will control the stopping of the motor, this stopping being able to be obtained by any other means.
Un mouvement de rotation, inverse du précédent, de l'arbre(5), provoquera la descente des pièces(A) et(B), de la collerette(δ), du coulisseau(7) et du plot(2). Lorsque la collerette(δ) viendra en appui sur l'entretoise(9), (A) et(B) se comprimeront légèrement avant l'arrêt du moteur, maintenant fermement le plot(2) en position basse. La relation mouvement de rotation - déplacement décrite ici peut être inversée en inversant le pas des hélicoïdes(A) et(B).A rotational movement, opposite to the previous one, of the shaft (5), will cause the parts (A) and (B), the collar (δ), the slide (7) and the stud (2) to descend. When the flange (δ) comes to rest on the spacer (9), (A) and (B) will compress slightly before the engine stops, keeping the stud (2) firmly in the low position. The rotation movement - displacement relationship described here can be reversed by reversing the pitch of the helicoid (A) and (B).
Le système peut être rendu réversible par le choix du pas de(A) et(B), et du type de moto-réducteur. On désigne ici par système réversible celui dans lequel une force de translation appliquée au ρlot(2) se traduira par une rotation des axes(4) et(5). De même, la vitesse de déplacement du plot(2) est déterminée par le pas des hélicoïdes(A) et(B) ainsi que par la vitesse de rotation de l'axe(4).The system can be made reversible by choosing the pitch of (A) and (B), and the type of gear motor. The term reversible system designates here that in which a translational force applied to the ρlot (2) will result in a rotation of the axes (4) and (5). Similarly, the speed of movement of the stud (2) is determined by the pitch of the helicoid (A) and (B) as well as by the speed of rotation of the axis (4).
Dans un autre mode de réalisation, le pas des hélicoïdes peut être rendu variable de façon à obtenir, pour une vitesse de rotation constante, une vitesse de translation variable.In another embodiment, the pitch of the helicoids can be made variable so as to obtain, for a constant speed of rotation, a variable speed of translation.
Dans la variante indiquée figure 3, les mouvements relatifs des pièces hélicoïdales et des galets sont inversés. Ainsi, les hélicoïdes fixes en translation sont entraînées en rotation par le moyen moteur, tandis que les galets(Gl) et(G2) fixes en rotation sont rendus solidaires de l'ensemble collerette(δ) et plot(2), et leur transmettent le mouvement de translation.In the variant shown in Figure 3, the relative movements of the helical parts and the rollers are reversed. Thus, the helicoids fixed in translation are driven in rotation by the motor means, while the rollers (Gl) and (G2) fixed in rotation are made integral with the flange assembly (et) and stud (2), and transmit them the translational movement.
Le choix de deux pièces hélicoïdales (A) et (B) a été fait ici pour des raisons d'équilibrage des poussées axiales exercées par les galets. On pourrait théoriquement utiliser une seule pièce hélicoïdale, ou plusieurs imbriquées les unes dans les autres: trois pièces hélicoïdales pourraient être ainsi imbriquées l'une dans l'autre avec un décalage d'un tiers de pas, et serviraient de chemin de roulement à trois pièces fixées sur trois axes disposés à 120° l'un de l'autre.The choice of two helical parts (A) and (B) was made here for reasons of balancing the axial thrusts exerted by the rollers. One could theoretically use a single helical part, or several nested one inside the other: three helical parts could be thus nested one in the other with an offset of a third of step, and would serve as path of three-piece bearing fixed on three axes arranged at 120 ° from each other.
Il y a lieu de noter que dans chacun des deux cas (fig.2 et fig.3), les pièces hélicoïdales(A) et(B) peuvent être remplacées par un cylindre unique dans lequel on aura pratiqué, par fraisage notamment, deux rainures hélicoïdales décalées d'un demi pas, et qui serviront de chemin roulement aux deux galets(Gl) et(G2).It should be noted that in each of the two cases (fig. 2 and fig. 3), the helical parts (A) and (B) can be replaced by a single cylinder in which one will have practiced, by milling in particular, two helical grooves offset by half a step, and which will serve as a rolling path for the two rollers (Gl) and (G2).
Le pas des rainures est constant ou non.The pitch of the grooves is constant or not.
Aux galets(Gl) et(G2) peuvent se substituer toutes pièces susceptibles de prendre appui et de glisser sur les chemins de roulement.The rollers (Gl) and (G2) can be substituted for any parts capable of bearing and sliding on the raceways.
Les deux pièces(A) et(B) sont imbriquées l'une dans l'autre de façon à ce que deux spires consécutives(Sl) et(S2) appartiennent à chacune des pièces(A) et(B) et soient séparées par un demi pas des hélicoïdes.The two pieces (A) and (B) are nested one inside the other so that two consecutive turns (Sl) and (S2) belong to each of the pieces (A) and (B) and are separated by half a step from the helicoids.
Les pièces(A) et(B) sont réunies à leurs extrémités ou sont laissées libres, et peuvent être fixées au ρlot(2) qui les contiennent. The pieces (A) and (B) are joined at their ends or are left free, and can be fixed to the ρlot (2) which contains them.

Claims

REVENDICATIONS
1- Mécanisme d'entraînement pour bornes rétractables destinées au contrôle d'accès de véhicules, caractérisé en ce que le mouvement de rotation d'un arbre moteur(5) est transformé en déplacement linéaire transmis au plot(2), au moyen de pièces hélicoïdales(A), (B) enfermées dans le plot à mouvoir(2), imbriquées l'une dans l'autre, et servant de chemins de roulement aux pièces(Gl), (G2) fixées aux extrémités d'un axe horizontal(4).1- Drive mechanism for retractable bollards intended for vehicle access control, characterized in that the rotational movement of a motor shaft (5) is transformed into a linear movement transmitted to the stud (2), by means of parts helical (A), (B) enclosed in the moving block (2), nested one inside the other, and serving as raceways for the parts (Gl), (G2) fixed to the ends of a horizontal axis (4).
2- Mécanisme selon la revendication 1, caractérisé en ce que les pièces hélicoïdales(A) et(B) sont fixes en rotation et l'axe horizontal(4) est entraîné en rotation par l'arbre moteur(5).2- Mechanism according to claim 1, characterized in that the helical parts (A) and (B) are fixed in rotation and the horizontal axis (4) is driven in rotation by the drive shaft (5).
3- Mécanisme selon la revendication 1 caractérisé en ce que les pièces hélicoïdales(A) et(B) sont entraînées en rotation par le moyen moteur(5), les pièces fixées sur l'axe(4) étant rendues solidaires du plot(2) à entraîner.3- Mechanism according to claim 1 characterized in that the helical parts (A) and (B) are rotated by the motor means (5), the parts fixed to the axis (4) being made integral with the stud (2 ) to train.
4- Mécanisme selon l'une des revendications 1 à 3, caractérisé en ce que le nombre de pièces hélicoïdales est quelconque.4- Mechanism according to one of claims 1 to 3, characterized in that the number of helical parts is arbitrary.
5- Mécanisme selon la revendication 1, 2, 3, ou 4 caractérisé en ce que les pièces hélicoïdales sont fabriquées d'un seul tenant, ne formant alors qu'une pièce unique.5- Mechanism according to claim 1, 2, 3, or 4 characterized in that the helical parts are manufactured in one piece, then forming only a single part.
6- Mécanisme selon l'une quelconque des revendications 1 à 4, caractérisé en ce que les pièces hélicoïdales sont fixées au plot à mouvoir.6- Mechanism according to any one of claims 1 to 4, characterized in that the helical parts are fixed to the block to be moved.
7- Mécanisme selon la revendication 1, 2, 3, ou 4 caractérisé en ce que les pièces hélicoïdales sont constituées par un cylindre dans lequel on aura pratiqué des rainures hélicoïdales qui serviront de chemins de roulement aux pièces(Gl) et(G2).7- Mechanism according to claim 1, 2, 3, or 4 characterized in that the helical parts are constituted by a cylinder in which we have practiced helical grooves which will serve as raceways for parts (Gl) and (G2).
8- Mécanisme selon la revendication 1 ou 7 caractérisé en ce que le pas des hélicoïdes est variable.8- Mechanism according to claim 1 or 7 characterized in that the pitch of the helicoid is variable.
9- Mécanisme selon la revendication 1 ou 7 caractérisé en ce que les pièces hélicoïdales sont élastiques.9- Mechanism according to claim 1 or 7 characterized in that the helical parts are elastic.
10- Mécanisme selon la revendication 1 caractérisé en ce que les pièces se déplaçant dans les chemins de roulement sont constituées de galets(Gl) et(G2). 10- Mechanism according to claim 1 characterized in that the parts moving in the raceways consist of rollers (Gl) and (G2).
EP93924664A 1992-11-02 1993-11-02 Drive mechanism for retractable bollards Withdrawn EP0625226A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9213348A FR2697548B1 (en) 1992-11-02 1992-11-02 Drive mechanism for retractable bollard.
FR9213348 1992-11-02
PCT/FR1993/001078 WO1994010391A1 (en) 1992-11-02 1993-11-02 Drive mechanism for retractable bollards

Publications (1)

Publication Number Publication Date
EP0625226A1 true EP0625226A1 (en) 1994-11-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP93924664A Withdrawn EP0625226A1 (en) 1992-11-02 1993-11-02 Drive mechanism for retractable bollards

Country Status (3)

Country Link
EP (1) EP0625226A1 (en)
FR (1) FR2697548B1 (en)
WO (1) WO1994010391A1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103952991A (en) * 2014-05-20 2014-07-30 曾建 Electric turning type car blocking mechanism
CN103952991B (en) * 2014-05-20 2016-08-17 顾湘 The electric turnover formula kinfe rest

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FR2697548B1 (en) 1994-12-30
FR2697548A1 (en) 1994-05-06
WO1994010391A1 (en) 1994-05-11

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