EP0836912A1 - Dispositif de serrage du type comprenant un levier actionné par un piston - Google Patents
Dispositif de serrage du type comprenant un levier actionné par un piston Download PDFInfo
- Publication number
- EP0836912A1 EP0836912A1 EP97410114A EP97410114A EP0836912A1 EP 0836912 A1 EP0836912 A1 EP 0836912A1 EP 97410114 A EP97410114 A EP 97410114A EP 97410114 A EP97410114 A EP 97410114A EP 0836912 A1 EP0836912 A1 EP 0836912A1
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- EP
- European Patent Office
- Prior art keywords
- axis
- clamping
- lever
- clamping device
- ramps
- 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.)
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B5/00—Clamps
- B25B5/06—Arrangements for positively actuating jaws
- B25B5/12—Arrangements for positively actuating jaws using toggle links
- B25B5/122—Arrangements for positively actuating jaws using toggle links with fluid drive
Definitions
- the present invention relates to a clamping device comprising a lever actuated hydraulically or pneumatically by a piston of the type used to hold workpieces or solder.
- clamping devices of the type comprising a jack controlling the pivoting of a lever arm by through a link rod or several rods, in particular the clamping devices described by patent applications French published under the numbers 2 340 798 or 2 536 323.
- the clamping devices described have the disadvantage of having a clamping force exerted by the lever during its passage from the inactive release position to the active clamping position which only reaches satisfactory values when said lever is in a position in the vicinity very close to its active clamping position, the clamping force having relatively low values during the majority of the passage between two positions.
- the object of the present invention is to remedy the drawbacks presented by current devices thanks to simple and reliable means allowing the clamping device to present a clamping force satisfactory while providing a seal against various soils.
- the clamping device intended to retain a construction part to be machined or to be welded, is of the type comprising a lever mounted pivoting around a axis of rotation relative to a device body to be actuated in pivoting by the displacement of the piston of a jack between a first so-called inactive release position, and a second position said active clamping position, said lever being connected to the end of the piston rod by means of control and connection means, said device comprising means for transmitting the force intended to allow a lever clamping force to be obtained important substantially constant while said lever pivots between an attack position remote from the clamping position and a position close to the lever clamping position, and is characterized in that the control and connection means comprise at least one link longitudinal axis linkage pivotally mounted, on the one hand on the lever tightening around a secondary pivot axis, and on the other hand either on a member of said control and connection means either directly on the piston rod around a main pivot axis, in that the force transmission means
- the clamping device has a distance between the main pivot axis and the axis of secondary pivoting carried by the connecting rod which is lower at the orthogonal distance between the longitudinal axis of the cylinder and the axis of rotation of the clamping lever.
- the guide means are constituted by blind guide lights located on the faces internal side walls of the device body, said lumens comprising vertical straight ramps extended by the ramps inclined.
- the inclined ramps are located above the horizontal plane which contains the axis of rotation of the the sink.
- the inclined ramps are at least partly curved.
- the inclined ramps are inclined upwards and towards the lever with respect to the longitudinal axis of the jack in a median plane of general symmetry of the device Tightening.
- the connecting rod is mounted swivels at one of its ends around a main pivot axis on an intermediate piece movable in translation, means of control and connection, said part being carried by the end of the piston rod and at the other of its ends around a secondary axis of pivoting on the mounting part or the arm of the clamping lever.
- the clamping device may include a integral protection in rotation of the lever which has a wall upper circular shape and two side cheeks, the organ of protection can be made of aluminum.
- the clamping device has a detection system.
- the inclined ramps each have a lower portion facing upwards and towards the rear and an upper portion oriented upward and forward by relative to the longitudinal axis of the jack.
- the distance between the axis of primary pivot and the secondary pivot axis is greater or equal to the orthogonal distance between the longitudinal axis of the cylinder and the axis of rotation of the clamping lever.
- the piston rod undergoes angular movement back and forth and vice versa when the rollers run along the inclined ramps.
- FIGS 1 to 11b illustrate different embodiments of the clamping device according to the invention.
- Figures 1 to 9 illustrate a first embodiment particular of the clamping device according to the invention.
- Figure 1 shows the clamping device and the cylinder in view lateral exterior in the inactive release position.
- Figure 2 shows said device in external side view in its clamping position.
- Figure 2a shows the device in its clamping position at side view along F.
- Figure 2b shows the device in its clamping position at top view.
- Figures 3a, 3b and 3c illustrate in longitudinal section in a median plane of the different clamping positions, Figures 3'b and 3'c illustrating the respective positions of the end rollers.
- Figure 3a illustrates the device in the inactive position of release as shown in Figure 1.
- Figure 3b illustrates the device between its inactive position release and its clamping position.
- Figure 3'b is an enlarged view of the roller and the means of inclined guidance when the device is in the position of Figure 3b.
- Figure 3c illustrates the locked device, the piston rod being in the locked position and the lever in the clamped position.
- Figure 3'c is an enlarged view of the roller and the means of inclined guide when the device is in the position of FIG. 3c.
- Figure 4 shows the body of the device in cross section according to AA.
- FIG. 5 illustrates the body of the device in longitudinal section.
- Figure 6 is a view similar to Figure 4 showing the clamping device with its constituent elements.
- Figure 7 illustrates in perspective the arm protection member lever, the lever and the control and connecting means.
- FIG. 8 represents two curves illustrating the clamping force of the lever depending on its position for the device according to the invention (line full) and for a conventional type device (dotted line).
- FIG. 9 is an enlarged view of the roller, of a portion of the connecting rod and inclined guide means when the device is between its inactive release position and its clamping position.
- FIGS 10a to 11b illustrate a second embodiment of the clamping device according to the invention.
- Figures 10a to 10d respectively illustrate in section longitudinal in a median plane of the different positions of the clamping.
- Figure 10a illustrates the inactive position of the device.
- Figures 10b and 10c respectively represent two positions intermediaries.
- Figure 10d illustrates the clamping position of the device.
- FIG. 11a schematically represents the clamping ramp and a guide roller.
- Figure 11b illustrates in a view similar to Figure 11a different positions of the end roller in the clamping ramp.
- the clamping device (1) of plane of symmetry general median (P), includes a clamping lever bearing the reference general (2) pivotally mounted about a transverse axis of rotation (3) on a device body (4), allowing said lever to be movable between two positions, a first position (A) illustrated in FIG. 1 and in FIG. 3a, said inactive position for releasing the part to be welded or machined, and a second position (B) illustrated in FIG. 2, called the active position of Tightening.
- the clamping lever (2) is pivotally actuated around its axis (3) by the displacement of the piston rod (6) of an axis cylinder (7) longitudinal (ZZ ') by means of control and link (MC).
- Said means comprise at least one connecting rod connection (16) of longitudinal axis (RR ') pivotally mounted, on the one hand on the clamping lever (2) around a secondary pivot axis (23), and on the other hand around a main pivot axis (22) or on another member of said control and connection means (MC) either directly on the piston rod (6), and are thus intended to transmit to the clamping lever (2) the force supplied to the device (1) by the jack (7).
- the clamping device (1) comprises force transmission means (MT) intended to allow obtaining a significant and satisfactory clamping force [EF1], substantially constant when the lever is pivoted between a position close to a so-called attack position (C) and a position close to its position active clamping (B).
- MT force transmission means
- Clamping devices of the conventional type known in the art anterior have relatively low clamping force (EF) during pivoting of the lever from its inactive position (A) to a position (K) close to its active clamping position (B), said force increasing suddenly between said position (K) and the clamping position (B), as shown in Figure 8 illustrating in dotted line the clamping force of the lever (EF) depending on the position of the lever relative to its position tightening active, i.e. depending on the parameter (k) illustrated in figure 3b.
- EF clamping force
- the device (1) according to the invention is intended to allow obtaining a satisfactory clamping force (EF) (corresponding to a force (EF1) illustrated in figure 8) and constant for positions (K1, K2, K3) of the lever clamping away from clamping position (B) and position (K) as shown by the curve illustrated in solid lines in FIG. 8, this for a identical force supplied by the jack (7) to the clamping device (1) that in the case of conventional type devices.
- EF clamping force
- the clamping device (1) comprises means for guide (MG) comprising inclined guide means (MI); said guide means (MG) being intended to guide the main axis of pivot (22) of the connecting rod (16) in a path at less inclined in relation to the longitudinal axis (ZZ ') of the jack, they thus constitute the means of transmission of the force (MT) of the device.
- MG guide
- MI inclined guide means
- the body (4) of the clamping device (1) consists of an upper part (9a) at the interior of which the clamping lever (2) pivots, and of a part lower (9b) in which slides the piston rod (6) of the cylinder (7).
- the clamping device (1) includes fixing means (MF) of said cylinder, so as to allow adaptation to said device several types of cylinder, as well as the easy replacement of a cylinder defective.
- said cylinder (7) is fixed to the lower part (9b) of the device (1) by means of four rods threaded (43) arranged longitudinally parallel to the axis (ZZ ') at four corners of its cross section and which thus constitute said fixing means (MF).
- the rod piston (6) movable in translation is cylindrical in shape;
- the seal between the cylinder (7) and the piston rod (6) can advantageously be obtained using lip seals without guide so as to allow the inclination of said rod while minimizing the wear of the joints.
- the upper part (9a) of the body (4) of the device clamping has the general shape of a yoke (100) which is formed by two parallel side walls (10a, 10b) creating between them a slot (11) of width L1 intended for the passage of the lever (2), said side walls parallel (10a, 10b) are, moreover, pierced with a transverse hole (12) axis (XX ') in which is engaged the transverse axis of rotation (3) of the lever (2) as illustrated in Figure 2a, 4 and 5.
- Said lever (2) comprises a lever arm (14) extending a embedding part (13) which constitutes its actuation and pivoting on which is pivotally mounted the connecting rod (16) of control and connection means (MC) as illustrated in FIGS. 3a, 3b, 3c and 7.
- the lever (2) advantageously comprises a member for protection (15), as shown in FIGS. 2a, 2b and 7 secured in rotation of the lever arm (14), said member being intended to cover the parts of the lever (2) which, when pivoted from its clamping position (B) in its inactive position (A), move from the outside (EX) of the yoke (100) inside (IN) thereof.
- Said organ comprises, part, an upper wall (15a) of width L2 adjusted to the width L1 of the slot and whose external shape is circular with radius R1, centered on the axis (XX ') and, on the other hand, two lateral protective cheeks (40a, 40b) extending said upper wall (15a) and the external faces of which are thus distant from the width L2.
- Said cheeks (40a, 40b) have the shape of a circle sector centered on the axis (XX ') of radius R1.
- the organ of protection is advantageously achieved according to the use made of the device (1) in a material intended to allow projections and other dirt does not adhere to it, such as, for example, aluminum alloy when using the device (1) to perform welding on steel parts. Note, moreover, that it is hollowed out in its rear part so not to interfere with the internal mechanism of the device when pivoting the lever from its active clamping position (B) to its release position (AT).
- the lower part (9a) of the body (4) forms a closed chamber (17), inside which is arranged the actual mechanism of the clamping device (1).
- She is consisting of two side walls (18a, 18b) extending respectively the two parallel side walls (10a, 10b) of the yoke (100) as well as a rear wall (19) and a front wall (20), the rear wall extending advantageously up to the slot (11) of the yoke (100).
- the lower part (9a) of the clamping device (1) is mounted directly on a cylinder (7) pneumatic or hydraulic with longitudinal axis (ZZ ') whose end (8) of the piston rod (6) is intended to move substantially vertically between a relaxed position (A1), illustrated in FIG. 3a, corresponding to the inactive position (A) of the lever (2) and a so-called position lock (B1), illustrated in Figure 3c where the lever is in its active clamping position (B).
- control means and connecting (MC) are constituted by a movable intermediate piece in translation (21) carried by the piston rod (6) of the jack (7) and integral moving the end (8) of said rod and by the connecting rod link (16) pivotally mounted at one of its ends on said part intermediate around the main pivot axis (22) and mounted at the other of its ends on the lever arm (14) or the part mounting (13) of the clamping lever (2) around a secondary axis pivot (23), as shown in Figures 3a, 3b and 3c.
- the length of the link (L5) i.e.
- Said intermediate piece has the form general of a U consisting of an end wall (21c) and two walls vertical lateral (21a, 21b) distant by a distance L3, like the shows Figures 6 and 7.
- Said vertical side walls bear transversely at their upper ends (25a, 25b) the main axis pivot (22) on which is mounted the connecting rod (16).
- Said axis (22) is provided at each of its ends with a roller or bearing end (24a, 24b) intended to be guided in its movement substantially vertical by the guide means (MG).
- the connecting rod (16) is mounted to one of its ends between the vertical side walls (21a, 21b) of the part intermediate (21) and at the other of its ends in a slot (26) located in the mounting part (13) of the lever (2).
- the device could for example include two connecting rods parallels arranged on either side of the sliding part and the embedding part of the lever without leaving the field of protection of the invention.
- said link (16) and its axis (22) could be mounted directly on the end of the piston rod, for example.
- the means guide (MG) intended to guide the main pivot axis (22) are constituted by two blind guide lights (30a, 30b) located on the internal faces (28a, 28b) of the side walls (10a, 10b, 18a, 18b) of the body (4) of the device (1), as shown in Figures 4, 5 and 6.
- Said blind lights (30a, 30b) each have a guide ramp vertical straight (50a, 50b) extended by a guide ramp inclined (27a, 27b), said inclined ramps constituting the means of inclined guide (MI) of the guide means (MG).
- the main pivot axis (22) and therefore the part intermediate (21) and the end (8) of the piston rod (6) which are there united are driven in a rectilinear and vertical axis trajectory (ZZ '), on the one hand, then successively in a trajectory inclined by ratio to said axis (ZZ '), on the other hand, when the end rollers (24a, 24b) of said main axis are guided in the lights (30a, 30b) successively along the vertical straight ramps (50a, 50b) then inclined ramps (27a, 27b) thus allowing the piston rod (6) to move between its relaxed positions (A1) and its position locking (B1) illustrated respectively in Figures 3a and 3c.
- said positions (A1, B1) of the end of the piston rod (8) correspond respectively to the position (A'1) of the rollers (24a, 24b) on the straight guide rails (50a, 50b) and at the position (B'1) of said rollers on the inclined ramps (27a, 27b) illustrated in Figure 3'b and 3'c.
- said ramps (27a, 27b) are made up of independent parts intended to be positioned and fixed in ramp housings located in the internal faces (28a, 28b) of the side walls (10a, 10b, 18a, 18b) of the body (4). Said ramps are positioned so that they are traversed by the end rollers (24a, 24b) of the axis main pivot (22) between a first position of the rollers called attack position (C'1), illustrated in FIG. 3'b and a second position of the rollers called locking position (B'1) illustrated in Figure 3'c.
- the position (C'1) of the rollers corresponds to a position (C1) of the end of the piston rod (8) located between its relaxed position (A1) and its intermediate clamping position (D1) as well as at a position intermediate (C) of the lever as illustrated in FIG. 3b
- the position (B'1) of the rollers corresponds to the locking position of the rod (B1) illustrated in Figure 3c.
- said ramps are positioned in the space above the plane horizontal (H1) containing the axis of rotation (3) of the lever (2).
- the ramps (27a, 27b) are inclined advantageously in the median plane (P) so as to extend towards the high (HA) in the direction of the clamping lever (2). They are advantageously curved either over their entire length as the shows Figures 3'b and 3'c or either only on the portion where the rollers pass from their attack position (C'1) to their position clamping intermediate (D'1) corresponding to the intermediate position (D1) of the rod, then can be straight between positions clamping (D'1) and locking (B'1) intermediate rollers.
- the longitudinal axis (RR ') of said link forms an angle ⁇ with the straight line (Q), said line (Q) being the line perpendicular to the tangent (T) to the inclined ramp at point M traversed by the roller as shown in the figure 9.
- the inclined ramps (27a, 27b) are curved so that the angle ⁇ is substantially constant during said course rollers between their attack position (C'1) and a position close to their intermediate clamping position (D'1).
- rollers ends (24a, 24b) are guided in the lights (30a, 30b) according to the longitudinal axis (ZZ ') between the detent (A'1) and attack positions (C'1) then along an inclined path relative to the axis (ZZ ') between the attack (C'1) and locking (B'1) position via the intermediate clamping position (D'1).
- said ramps could be machined directly inside the blind lights; however, the curvature ramps must be machined with precision in order to obtain an angle ⁇ substantially constant and therefore to obtain the expected increase effect of the transmitted effort, it therefore seems preferable to carry them out separately before positioning and fixing them in housings located in the extension of the vertical straight ramps of the blind lights.
- the parts comprising said inclined ramps can be advantageously made of steel.
- the vertical side walls (21a, 21b) of the intermediate piece (21) are spaced a distance L3 greater to the width L2 of the upper wall (15a) of the protection member (15), so that it can, when pivoted towards the inactive position (A) of the lever fit in the space (29) located between said vertical walls.
- the organ (15) of external shape circular is hollowed out in its rear portion so as not to interfere with the main pivot axis (22) in the inactive release position (A) of the clamping lever (2).
- the clamping device (1) includes a detection system (SD) which can advantageously be inductive type comprising at least two sensors (41a, 41b) arranged at the interior of the chamber (17) of the body (4) intended to detect the position in which is located the clamping device, i.e. the arm of lever (14) or the piston rod (6), by sending a signal to a check when the clamping device is in their position detection.
- SD detection system
- Said sensors (41a, 41b), as shown in FIGS. 3a, 3b, 3c and 6 can be arranged along the front wall (20) and against a side wall (18b) of the body (4) in order to be able to detect the position a detection finger (42) integral with the intermediate piece (21).
- a variant consists in modifying the shape of the arm of lever to give it a suitable shape so that the clamping device can clamp a piece to be welded against a vertical plane or an inclined plane, for example.
- the inclined ramps (27a, 27b) are produced so as to obtain an angle ⁇ substantially constant, i.e. an angle ⁇ whose variations around its value average are low, between 1 and 5 ° of travel when the end rollers (24a, 24b) run through said inclined ramps.
- the inclined guide rails (27a, 27b) have a configuration different from that of the first embodiment.
- the guide ramps (27a, 27b) are no longer inclined towards the high (HA) and forward (AV), but have a lower portion (51) tilted upwards (HA) and rearwards (AR) opposite the lever (2), and an upper portion (52) which is inclined upwards (HA) and forward (AV).
- the lower portion (51) extends the vertical straight ramps (50a, 50b) and goes towards the rear relative to the axis (ZZ '), while the upper portion (52) is then heads forward and goes back to the front of the axis (ZZ '). Note that the curvature and inclination of the upper (52) and lower (51) portions are calculated so that the angle ⁇ as defined above remains substantially constant when the rollers (24a, 24b) travel said portions.
- the piston rod (6) of the cylinder (7) undergoes an angular movement from front (AV) to rear (AR) of on either side of the axis (ZZ ') unlike the embodiment previous where the rod underwent an angular movement in an area located only at the front (AV) relative to the axis (ZZ ').
- the overall value of the angular movement from front to back caused by the course of the ramps inclined by the pebbles is substantially identical in the two embodiments.
- this second embodiment makes it possible to obtain a clearance which takes place around the equilibrium position where the piston rod is coincident with the longitudinal axis (ZZ ') of the jack (7).
- the distance (L5) between the main and secondary axes (22, 23) carried by the link (16) is identical to the distance (L6) between the axis (XX ') of the lever (2) and the axis longitudinal (ZZ ') of the cylinder (7). It goes without saying that the distance (L5) could be greater than said distance (L6), without however leaving the field of protection of the invention.
- connection (21), the piston rod (6) and the piston of the jack constitute a sub rigid assembly which carries the end rollers (24a, 24b) of the axis main (22) and whose inclination varies slightly when the rollers roam the inclined ramps.
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Abstract
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Claims (12)
- Dispositif de serrage (1) destiné à retenir une pièce de construction à usiner ou à souder, du type comprenant un levier (2) monté pivotant autour d'un axe de rotation (XX', 3) par rapport à un corps de dispositif (4) pour être actionné en pivotement par le déplacement du piston d'un vérin (7) d'axe longitudinal (ZZ') entre une première position (A) dite position inactive de libération, et une deuxième position (B) dite position active de serrage, ledit levier (2) étant relié à l'extrémité (8) de la tige de piston (6) par l'intermédiaire de moyens de commande et de liaison (MC), ledit dispositif comportant des moyens de transmission de l'effort (MT) destinés à permettre l'obtention d'un effort de serrage du levier (2) important (EF1) sensiblement constant pendant que ledit levier pivote entre une position d'attaque (C) éloignée de la position de serrage (B) et une position voisine de la position de serrage (B) du levier, caractérisé en ce que les moyens de commande et de liaison (MC) comportent au moins une biellette de liaison (16) d'axe longitudinal (RR') montée pivotante, d'une part sur le levier de serrage (2) autour d'un axe secondaire de pivotement (23), et d'autre part soit sur un organe desdits moyens de commande et de liaison (MC) soit directement sur la tige de piston (6) autour d'un axe principal de pivotement (22), en ce que les moyens de transmission de l'effort (MT) sont constitués par des moyens de guidage (MG) destinés à guider l'axe principal de pivotement (22) dans une trajectoire au moins en partie inclinée par rapport à l'axe longitudinal (ZZ'), les moyens de guidage (MG) comprenant des moyens de guidage inclinés (MI) constitués par des rampes inclinées (27a, 27b) destinées à guider des galets d'extrémité (24a, 24b) disposés sur l'axe principal de pivotement (22) selon une trajectoire au moins en partie inclinée par rapport à l'axe longitudinal (ZZ') et en ce que les rampes inclinées (27a, 27b) sont incurvées de manière à ce que l'angle σ formé en un point M des rampes inclinées entre l'axe longitudinal (RR') de la biellette de liaison (16) et la droite (Q) perpendiculaire à la tangente (T) à la rampe inclinée au point M où se situe le galet (24a, 24b) soit sensiblement constant lorsque les galets d'extrémité (24a, 24b) parcourent lesdites rampes entre une position d'attaque (C1) et une position voisine d'une position intermédiaire de serrage (D'1).
- Dispositif de serrage (1) selon la revendication 1, caractérisé en ce que la distance (L5) entre l'axe de pivotement principal (22) et l'axe de pivotement secondaire (23) portés par la biellette de liaison (16) est inférieure à la distance orthogonale (L6) entre l'axe longitudinal du vérin (ZZ') et l'axe de rotation (XX', 3) du levier de serrage (2)
- Dispositif de serrage (1) selon la revendication 1 ou 2, caractérisé en ce que les moyens de guidage (MG) sont constitués par des lumières borgnes de guidage (30a, 30b) situées sur les face internes (28a, 28b) des parois latérales (18a, 18b) du corps du dispositif (4), lesdites lumières comprenant des rampes rectilignes verticales (50a, 50b) prolongées par les rampes inclinées (27a, 27b).
- Dispositif de serrage (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que les rampes inclinées (27a, 27b) sont situées au dessus du plan horizontal (H1) qui contient l'axe de rotation (3) du levier (2).
- Dispositif de serrage (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que les rampes inclinées (27a, 27b) sont au moins en partie incurvées.
- Dispositif de serrage (1) selon l'une quelconque des revendications précédentes. caractérisé en ce que les rampes inclinées (27a, 27b) sont inclinées vers le haut (HA) et vers le levier (2) par rapport à l'axe longitudinal (ZZ') dans un plan médian (P) de symétrie général du dispositif de serrage (1).
- Dispositif de serrage (1) selon l'une quelconque des revendications précédentes. caractérisé en ce que la biellette de liaison (16) est montée pivotante à une de ses extrémités autour d'un axe principal de pivotement (22) sur une pièce intermédiaire mobile en translation (21) des moyens de commande et de liaison (MC), ladite pièce étant portée par l'extrémité (8) de la tige de piston (6) et à l'autre de ses extrémités autour d'un axe secondaire de pivotement (23) sur la partie d'encastrement (13) ou le bras (14) du levier de serrage (2).
- Dispositif de serrage (1) selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comprend un organe de protection (15) solidaire en rotation du levier (2) qui comporte une paroi supérieure (15 a) de forme circulaire et deux joues latérales (40a, 40b).
- Dispositif de serrage (1) selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comporte un système de détection (SD).
- Dispositif de serrage (1) selon les revendications 1, 3, 4 et 5, caractérisé en ce que les rampes inclinées (27a, 27b) comportent chacune une portion inférieure (51) orientée vers le haut (HA) et vers l'arrière (AR) et une portion supérieure (52) orientée vers le haut (HA) et vers l'avant (AV) par rapport à l'axe longitudinal (ZZ') du vérin (7).
- Dispositif de serrage (1) selon la revendication 10, caractérisé en ce la distance (L5) entre l'axe de pivotement principal (22) et l'axe de pivotement secondaire (23) est supérieure ou égale à la distance orthogonale (L6) entre l'axe longitudinal (ZZ') du vérin et l'axe de rotation (XX', 3) du levier de serrage (2).
- Dispositif de serrage (1) selon l'une quelconque des revendications précédentes, caractérisé en ce la tige de piston (6) subit un débattement angulaire d'avant (AV) en arrière (AR) et inversement lorsque les galets (24a, 24b) parcourent les rampes inclinées (27a, 27b).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9612866A FR2754484B1 (fr) | 1996-10-15 | 1996-10-15 | Perfectionnement pour dispositif de serrage du type comprenant un levier actionne par un piston |
FR9612866 | 1996-10-15 |
Publications (1)
Publication Number | Publication Date |
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EP0836912A1 true EP0836912A1 (fr) | 1998-04-22 |
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ID=9496904
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP97410114A Withdrawn EP0836912A1 (fr) | 1996-10-15 | 1997-10-14 | Dispositif de serrage du type comprenant un levier actionné par un piston |
Country Status (2)
Country | Link |
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EP (1) | EP0836912A1 (fr) |
FR (1) | FR2754484B1 (fr) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0894573A2 (fr) * | 1997-07-29 | 1999-02-03 | Benteler Ag | Dispositif de serrage d'une pièce |
EP1262444A1 (fr) * | 2001-05-31 | 2002-12-04 | Still & Saxby S.à.r.l. | Protège-doigts pour un chariot de manutention guidé par timon |
EP2177320A1 (fr) | 2008-10-15 | 2010-04-21 | UNIVER S.p.A. | Dispositif de commande à genouillère de type irréversible |
DE102017104868A1 (de) | 2017-03-08 | 2018-09-13 | Karin Schmid E. K. | Schwenkspanner für Automatisierungszwecke |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2550115A1 (fr) * | 1983-08-03 | 1985-02-08 | Thombor Rojac | Dispositif de serrage |
EP0216710A1 (fr) * | 1985-09-24 | 1987-04-01 | Fabrice Goussu | Dispositif de bridage à têtes multiples à commande unique à distance |
US4679782A (en) * | 1985-01-02 | 1987-07-14 | Aladdin Engineering & Mfg | Mechanical toggle clamp with means for applying uniform clamping force |
EP0341155A1 (fr) * | 1988-05-06 | 1989-11-08 | Genus International | Dispositif de bridage pour plaques ou profilés l'un contre l'autre |
EP0436883A1 (fr) * | 1990-01-09 | 1991-07-17 | DE-STA-CO Metallerzeugnisse GmbH | Dispositif de serrage |
FR2677570A1 (fr) * | 1991-06-13 | 1992-12-18 | Badart Jacques | Dispositif de serrage d'un corps par rapport a un referentiel. |
FR2696120A1 (fr) * | 1992-09-25 | 1994-04-01 | Badart Jacques | Dispositif de serrage. |
EP0615817A1 (fr) * | 1993-03-16 | 1994-09-21 | Génus Technologie Industrielle (G.T.I.), S.A. | Dispositif de serrage, notamment pour l'application de tôles ou profilés métalliques l'un contre l'autre |
-
1996
- 1996-10-15 FR FR9612866A patent/FR2754484B1/fr not_active Expired - Fee Related
-
1997
- 1997-10-14 EP EP97410114A patent/EP0836912A1/fr not_active Withdrawn
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2550115A1 (fr) * | 1983-08-03 | 1985-02-08 | Thombor Rojac | Dispositif de serrage |
US4679782A (en) * | 1985-01-02 | 1987-07-14 | Aladdin Engineering & Mfg | Mechanical toggle clamp with means for applying uniform clamping force |
EP0216710A1 (fr) * | 1985-09-24 | 1987-04-01 | Fabrice Goussu | Dispositif de bridage à têtes multiples à commande unique à distance |
EP0341155A1 (fr) * | 1988-05-06 | 1989-11-08 | Genus International | Dispositif de bridage pour plaques ou profilés l'un contre l'autre |
EP0436883A1 (fr) * | 1990-01-09 | 1991-07-17 | DE-STA-CO Metallerzeugnisse GmbH | Dispositif de serrage |
FR2677570A1 (fr) * | 1991-06-13 | 1992-12-18 | Badart Jacques | Dispositif de serrage d'un corps par rapport a un referentiel. |
FR2696120A1 (fr) * | 1992-09-25 | 1994-04-01 | Badart Jacques | Dispositif de serrage. |
EP0615817A1 (fr) * | 1993-03-16 | 1994-09-21 | Génus Technologie Industrielle (G.T.I.), S.A. | Dispositif de serrage, notamment pour l'application de tôles ou profilés métalliques l'un contre l'autre |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0894573A2 (fr) * | 1997-07-29 | 1999-02-03 | Benteler Ag | Dispositif de serrage d'une pièce |
EP0894573A3 (fr) * | 1997-07-29 | 1999-04-28 | Benteler Ag | Dispositif de serrage d'une pièce |
EP1262444A1 (fr) * | 2001-05-31 | 2002-12-04 | Still & Saxby S.à.r.l. | Protège-doigts pour un chariot de manutention guidé par timon |
EP2177320A1 (fr) | 2008-10-15 | 2010-04-21 | UNIVER S.p.A. | Dispositif de commande à genouillère de type irréversible |
DE102017104868A1 (de) | 2017-03-08 | 2018-09-13 | Karin Schmid E. K. | Schwenkspanner für Automatisierungszwecke |
Also Published As
Publication number | Publication date |
---|---|
FR2754484B1 (fr) | 1999-04-16 |
FR2754484A1 (fr) | 1998-04-17 |
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