EP2821181B1 - Dispositif de serrage - Google Patents

Dispositif de serrage Download PDF

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Publication number
EP2821181B1
EP2821181B1 EP20130174605 EP13174605A EP2821181B1 EP 2821181 B1 EP2821181 B1 EP 2821181B1 EP 20130174605 EP20130174605 EP 20130174605 EP 13174605 A EP13174605 A EP 13174605A EP 2821181 B1 EP2821181 B1 EP 2821181B1
Authority
EP
European Patent Office
Prior art keywords
locking means
clamping
shaft
clamping device
lever
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.)
Not-in-force
Application number
EP20130174605
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German (de)
English (en)
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EP2821181A1 (fr
Inventor
Luciano Migliori
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Univer SpA
Original Assignee
Univer SpA
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Filing date
Publication date
Application filed by Univer SpA filed Critical Univer SpA
Priority to EP20130174605 priority Critical patent/EP2821181B1/fr
Publication of EP2821181A1 publication Critical patent/EP2821181A1/fr
Application granted granted Critical
Publication of EP2821181B1 publication Critical patent/EP2821181B1/fr
Not-in-force legal-status Critical Current
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Classifications

    • 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
    • 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
    • B25B5/16—Details, e.g. jaws, jaw attachments

Definitions

  • the invention relates to a tensioning device, in particular a toggle lever tensioning device, primarily for use in the bodywork of the automotive industry.
  • tensioning devices for. B. toggle clamps are not horizontal, but also arranged under any spatial conditions. Especially when installing overhead, it may, for. B. at pressure drop or When heavy loads are connected to the clamp arm, it happens that the clamp arm unintentionally moves to an undesired position. This can cause damage, in the worst case even injuries.
  • a toggle lever device is for example from the EP 2 548 700 A1 known.
  • a tensioning device which is formed according to the features of the preamble of claim 1 is known from DE 298 17 335 U1 known. It has a housing and a pivotally driven shaft which is mounted in the housing. This wave can be achieved by supplying pressure medium pressure, z. B. by compressed air to a cylinder of the clamping device or under supply of correspondingly manually applied force via a hand lever back and forth to be moved between an open position and a closed position of a clamping arm of the clamping device.
  • the shaft is mounted in the housing and led out of this on the opposite sides of the housing.
  • the ends of the shaft are formed as form-fitting parts, which have a square cross-section.
  • the clamping arm arranged outside the housing has two legs which receive clamping jaws in the region of their ends.
  • the tensioning device has a first locking means, which is mounted in one of the clamping jaws and is pivotable together with the shaft, furthermore a second locking means which is arranged in the pivoting path of the first locking means and mounted in the housing.
  • the two locking means act releasably together in a defined pivot position of the clamping arm.
  • the first locking means has a fixedly connected to the jaws locking segment and a locking pin connected thereto.
  • the locking bolt can be arranged in relation to the locking segment in several different angular positions with respect to the pivot axis of the clamping arm, z. B.
  • the locking segment is provided with blind holes.
  • the connection is made for example by screwing.
  • the jaws serving to mount the first locking means thus has a receptacle within the blind bore for the first locking means and means for fixing the first locking means with respect to the receptacle, these means being designed as screwing-in means. Consequently, in this clamping device, the locking bolt can only be positioned at certain angular degrees.
  • the second locking means has a mounted in the housing, specifically in a separate part, which is connected to the housing, mounted U-shaped spring.
  • Object of the present invention is to develop a clamping device according to the preamble of claim 1 so that at any opening angles of the clamping arm secure locking of the clamping arm is guaranteed.
  • the recording is the freely pivotable receiving the first locking means and the first locking means in any angular position, based on the pivot axis of the shaft, can be adjusted so that the angular position can be adjusted continuously.
  • the storage of the first locking means serving jaws is thus provided with a receptacle.
  • This recording is intended to be the first Pivotally receive locking means. If the means provided for fixing the first locking means with respect to the receptacle are not effective, the first locking means can be set in any angular position with respect to the pivot axis of the shaft. This angular position can thus be adjusted continuously. If the desired angle is set, the means for fixing the first locking means are brought into their operative position, whereby a firm connection between the receptacle and the first locking means is brought about.
  • the defined pivoting position of the tensioning arm is, in particular, the infinitely adjusted angle in an angle range from 0 to 135 °.
  • the inventive design of the clamping device makes it possible to retrofit existing clamping devices with the lock for the clamping arm. For this purpose, it is only necessary to dismantle a conventional jaws, as it is provided at the other end of the shaft, which is thus not the lock from the clamping arm and instead of this usual jaw to use the modified jaws, which is provided with the recording.
  • the arrangement of clamping arm the usual jaws on one side of the housing and the receiving jaws on the other side of the housing with the clamping arm fixed, is on the jaws, which has the recording, in the recording area, the first locking means mounted, aligned in the desired opening angle position and fixed by means of fixing the first locking means with respect to the receptacle. It is then only necessary to connect the second locking means with the housing, in particular screw this into a threaded bore provided in the housing.
  • the first locking means comprises a lever and a jaws, for clamping, rotationally fixed connection of the arrangement of lever and jaws of the first locking means with that jaws in which the first locking means is mounted.
  • This configuration allows a bearing of the first locking means in the immediate vicinity of the pivot axis of the clamping arm, with a sufficiently long lever arm, thus sufficiently large distance of the contact region of the two locking means of the pivot axis of the clamping arm.
  • this design allows a simple attachment and rotationally fixed connection of the first locking means on the receiving means of the first locking means serving jaws.
  • the first locking means in the region of its end facing away from the shaft to a locking device which can be brought into operative connection with the second locking means.
  • the effective range of the two locking means is thus in the region of the first locking means, which faces away from the shaft.
  • the interaction of the two locking means can accomplish when the first locking means on the second locking means facing side has a recess which is bounded laterally by rollers.
  • the second locking means when pivoting the first locking means in its defined pivot position, contacts the rollers and, when the defined pivot position is reached, the second locking means is retracted into the recess of the first locking means.
  • the two locking means act releasably together.
  • the lock is only canceled when either manually, in particular via a lever, or pneumatically an increased force is introduced into the shaft, which causes the two locking means move apart.
  • it is therefore z. B. at a pressure drop or when heavy loads are connected to the clamping arm, not to the fact that the clamping arm unintentionally from the defined pivoting position in moved an unwanted situation. As a result, damage, in the worst case even injuries effectively avoided.
  • a particularly simple and effective design of the clamping device under the aspect of the releasable interaction of the two locking means results when two rotatably mounted shafts laterally delimit the recess.
  • By this rotatable mounting also low friction losses occur in a relative movement of the two locking means when they interact.
  • the bearing axes of the rollers are preferably arranged parallel to the pivot axis of the shaft. This can be achieved by a simple kinematic movement that the two locking means can be brought into operative position or out of operative position.
  • the stepless adjustability of the first locking means with respect to the shaft can be achieved if the receptacle for the first locking means is designed with respect to the pivot axis of the shaft rotationally symmetrical body with profiled trained contact area to the first locking means.
  • Such a designed clamping jaws can be particularly simple form of a rotary part, from which then only the jaw part with the recess must be worked out, in particular by milling.
  • the first locking means is in particular designed such that its clamping jaws is designed as a first half of a connecting clip and the lever of the first locking means in its this jaws facing region is designed such that it performs the function of the second half of the connecting clip having. It is further provided that the clamping jaw of the first locking means is pivotally connected in the region of one end to the lever and is releasably connected in the region of the other end by means of a screw connection to the lever.
  • connection clamp is open, to easily arrange it on the receptacle for the first locking means, in particular on the rotationally symmetrical body, and by closing the connecting clip and clamping the two clamp halves, the first locking means and the receptacle for the first locking means or the rotationally symmetrical body to clamp against rotation. Before this happens, the first locking means is aligned in the desired defined pivot position of the clamping arm.
  • the shaft is provided there with a polygonal cross-section. It is preferably a quadrangular, in particular square cross-section.
  • the arrangement of clamping arm and jaws has a complementary opening cross-section for receiving the respective shaft end.
  • the shaft end has a square cross-section
  • the arrangement of clamping arm and associated jaws forms a square opening cross-section for receiving the square cross-section having shaft end.
  • the second locking means is preferably designed such that it has at least one helical spring whose axis is arranged parallel to the pivot axis of the shaft.
  • the bearing pin passes through the at least one coil spring and allows deformation of at least a coil spring upon action of the first locking means, in particular a deformation of the at least one helical spring with respect to the axis of the helical spring radially inwardly directed component.
  • two coil springs are screwed into each other.
  • the distance between them is smaller than the spring diameter.
  • the use of two helical springs screwed together has the advantage that the contact area between the rollers and the spring arrangement increases.
  • the at least one helical spring is in particular guided only at both ends, so that a deformation of the elastic element formed from the at least one helical spring is ensured without further ado.
  • the rollers contact the pivoting of the first locking means in its defined pivot position, the at least one coil spring and deform them radially. In the defined pivot position, the rollers engage behind the at least one coil spring. In addition, a movement of the at least one coil spring over the defined pivoting position by a stop which is formed in the lever or by this, can be prevented. In the defined pivot position is thus at least one coil spring on the lever or the stop formed in the lever.
  • the invention and its developments thus proposes a clamping device, with a lock for the clamping arm in all possible mounting positions and opening angles, to prevent the clamping arm moves independently in the unwanted direction.
  • This lock can be arranged and adjusted on site without disassembly on one or the other side of the clamping device.
  • the lever of the first locking means is automatically positioned with respect to the second locking means and remains centered, even while taking the defined pivot position or opening angle adjustment.
  • the clamping arm does not have to be exchanged for another or removed. It is only the conventional jaws against the jaws, which serves to support the first locking means to replace.
  • tensioning device 1 Illustrated is a tensioning device 1, which is used in particular in the bodywork of the automotive industry. This tensioning device is regarding its operating principle in a known manner as toggle lever clamping device trained, as for example in the EP 2 548 700 A1 is described.
  • the tensioning device has a two-sided pneumatically actuated piston for pivoting a shaft 3 guided out of a housing 2 of the tensioning device 1 in opposite directions, a tensioning arm 4 being connected in a rotationally fixed manner to the shaft 3.
  • the piston acts on this shaft 3 via a toggle lever.
  • the stroke of the piston is variable in length, changeable, for example, by changing the length of a piston rod between the piston and toggle, so that at a defined closing angle, thus invariable closing position of the clamping arm 4 whose opening angle, thus the open position can be changed. This can be seen in particular against the background that structural conditions in the region of the tensioning device 1 only allow a certain opening angle of the tensioning arm 4.
  • the arranged outside the housing 2 clamping arm 4 has a U-shaped portion 6 with two legs 7 and a connecting web 8, also connected to the web 8, away from the portion 6 approach 9, which is provided with various holes 13. In this area of the projection 9, a tool or the like with the clamping arm 4 is connectable, thus a device that has quite a relatively large weight.
  • the respective leg 7 has, in the region of the end facing away from the web 8, a rectangular recess, in the region of which the leg 7 cooperates in a form-fitting manner with two adjacent sides of the associated shaft end 5.
  • jaws are provided which have a rectangular recess corresponding to the recess of the leg 7, so that the jaws in the region of these recesses in operative connection with the other two sides of the respective shaft end can be brought.
  • the respective jaws has in the region of opposite ends holes, the screws pass, which are screwed into threaded holes, both sides of the shaft end in the associated legs 7 of the clamping arm 4. In this way, a rotationally fixed connection between the clamping arm 4 and the two protruding from the housing 2 shaft ends is guaranteed.
  • the clamping device 1 described so far is known from the prior art.
  • This clamping device 1 is provided with a special lock for locking the clamping arm 4 in a respectively desired, predetermined opening position of the clamping arm 4.
  • the lock ensures that the clamping arm 4 can not pivot unintentionally out of the locked, open position.
  • the clamping device 1 is designed such that either on one side of the housing 2, this locking can be attached, or on the side facing away from this side of the housing 2 side of the housing 2. Based on the embodiment shown is in the region of one side of the housing. 2 a first locking means 11 and a second locking means 12 are positioned.
  • the clamping jaws which are usually used on one or the other side of the housing 2 are modified, ie the usual clamping jaw is dismounted from the associated leg 7 of the tensioning arm 4 and the modified clamping jaw 14 is instead removed therefrom Leg 7 screwed.
  • the design of this jaw 14 results in particular from the illustration of FIGS. 6 and 9 ,
  • the clamping jaw 14 is formed by a rotationally symmetrical body 15, a frontally connected thereto plate 16 and a jaw part 17.
  • the jaw part 17 has, according to the training of the commonly used clamping jaw, a rectangular recess 18 for positive connection with the two free sides of the shaft end 5, thus those sides on which the leg 7 is not applied.
  • the plate 16 is the connecting part of the jaw part 17 and body 15.
  • the jaw part 17 is provided in the usual manner, thus as the clamping jaws commonly used with two holes 19 for inserting screws into the threaded holes of this jaw 14 facing leg 7 of the clamping arm 4 are screwed to accomplish the rotationally fixed connection of the arrangement of clamping arm 4 and jaws 14 with this jaw 14 associated shaft end 5.
  • the body 15 represents a receptacle for the first locking means 11.
  • the first locking means 11 with the clamping jaw 14 is in any desired angular position with respect to the pivot axis of the shaft 3 and the identical pivot axis of the rotationally symmetrical body 15 in the region the rotationally symmetrical body 15 connected.
  • the rotationally symmetrical body is radially outwardly provided over its circumference with a profile 20 which is trapezoidal in cross-section.
  • the first locking means 11 has a lever 21 and a clamping jaw 22. This is mounted in the region of one end in an axis 23 which passes through the lever 21. In the region of the end facing away from the axis 23 of the jaws 22 is connected by means of a screw 24 with the lever 21, which is for this purpose in a threaded bore of the lever 21 can be screwed.
  • the jaw 22 is formed as a first half of a connection clamp and the Lever 21 in its the jaws 22 facing region designed such that it has the function of the second half of the connection threshold. In the area of the screw 24, the clamping jaw 22 is detachably connected to the lever 21.
  • the lever 21 and the jaws 22 have a corresponding profile 20 of the body 15 designed, negative profile, so that the first locking means 11 can be rotatably connected to the jaws 14 , If the first locking means 11 loosely attached to the jaws 14, due to the interaction of rotationally symmetrical body 15 and the arrangement of lever 21 and jaws 22 of the lever 21 can be arranged in any angular position to the jaws 14. Only then, when the desired angular position is set, the screw 24 is tightened and thus the rotationally fixed connection between the first locking means 11 and jaws 14, thus first locking means 11 and shaft 3 and consequently the tensioning arm 4 accomplished. - The jaw 22 and the screw 24 thus constitute means for fixing the first locking means 11 with respect to the receptacle, which is formed by the body 15, is.
  • the first locking means 11 in the region of its end facing away from the shaft 3, a locking device 25. This can be brought into operative connection with the second locking means 12.
  • the formation of the first locking means 11 in the region of the locking device 25 is in particular in the Figures 10 and 11 illustrated.
  • the lever 21 on that side, which faces the second locking means 12 has a U-shaped recess 26 which is bounded laterally by two rollers 27.
  • These rollers 27 are rotatably mounted in axes 28 which are arranged parallel to the axis of the body 15.
  • the rollers 27 are designed as cylindrical rollers and have identical diameter. As a result, an effective radius 30 is given by the average distance of the axes 28 of the rollers 27 from the pivot axis 29 of the body 15 and the shaft 3.
  • the second locking means 12 lying in the pivoting path of the first locking means 1 is arranged on the same side of the housing 2 as the first locking means 11.
  • the second locking means 12 has a bearing pin 31 connected to the housing 2.
  • the axis of the bearing pin 31 is in this case on a pitch circle with the effective radius 30 about the pivot axis 29.
  • the axis of the bearing pin 31 is arranged parallel to the pivot axis of the shaft 3.
  • the bearing pin 31 passes through two coil springs 32, 33, which are arranged screwed into one another. This spring assembly formed by the two coil springs 32 and 33 is supported on the bearing pin 31 and is braced by means of a screw 34 screwed into the bearing pin 31.
  • the coil springs 32, 33 are thus fixed axially.
  • the outer diameter of the axially fixed coil springs 32, 33 is slightly smaller than the distance between the two rollers 27 of the first locking means 11.
  • the lever 21 is axially positioned with respect to the rollers 21 such that upon pivoting of the first locking means 11 in the direction of the second locking means 12 the Rollers 27, the coil springs 32, 33 contact.
  • the coil springs 32, 33 deform slightly radially under the action of the rollers 27, and the coil springs 32, 33 pass through the rollers 27, thus reaching the area the U-shaped recess 26 of the lever 21, whereby the coil springs 32, 33 are contacted in the end position of the rollers 27 and rest in the bottom portion 35 of the recess 26, as shown in particular the representation of FIGS.
  • the embodiment of the clamping device 1 makes it possible to realize a lock for the clamping arm 4 for all possible mounting positions of the clamping device 1 and opening angle of the clamping device 1. Illustrated are in the FIG. 3 four different opening angle settings of the lever 21, which correspond to different opening angles of the clamping arm 4. These opening angles in particular move between 0 ° and 135 °, as illustrated by the scaling on one side of the housing 2. Because of the particular configuration of the first locking means 11, the opening angle are infinitely adjustable. This lock can be arranged without disassembly, on one or the other side of the housing 2.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Clamps And Clips (AREA)
  • Jigs For Machine Tools (AREA)

Claims (15)

  1. Dispositif de serrage (1), en particulier pour l'utilisation dans la construction de carrosseries de l'industrie automobile, comprenant un boîtier (2), un arbre (3) pouvant être entraîné de manière pivotante, qui est supporté dans le boîtier (2) et qui, sur des côtés opposés du boîtier (2), est guidé hors de celui-ci, les extrémités (5) de l'arbre (3) étant réalisées sous forme de pièces à correspondance de formes, et comprenant également un bras de serrage (4) disposé à l'extérieur du boîtier (2), lequel présente deux branches (7) qui reçoivent, dans la région de leurs extrémités, des mâchoires de serrage (14) pour la connexion par serrage, par engagement par correspondance de forme par rotation de l'agencement du bras de serrage (4) et des mâchoires de serrage (14) à l'arbre (3) dans la région des extrémités d'arbre (5) entre les branches (7) et les mâchoires de serrage (14), et comprenant un premier moyen de blocage (11) qui est supporté dans l'une des mâchoires de serrage (14) et qui peut pivoter conjointement avec l'arbre (3), et comprenant un deuxième moyen de blocage (12) qui est disposé dans la trajectoire de pivotement du premier moyen de blocage (11) et qui est supporté dans le boîtier (2), les deux moyens de blocage (11, 12), dans une position de pivotement définie du bras de serrage (4), coopérant de manière détachable, la mâchoire de serrage (14) servant au support du premier moyen de blocage (11) présentant un logement (15) pour le premier moyen de blocage (11) ainsi que des moyens (22, 24) pour fixer le premier moyen de blocage (11) par rapport aux logements (15), caractérisé en ce que le logement (15) sert à recevoir, de manière librement pivotante, le premier moyen de blocage (11), le premier moyen de blocage (11) pouvant être ajusté dans une position angulaire quelconque par rapport à l'axe de pivotement de l'arbre (3) de telle sorte que la position angulaire puisse être ajustée en continu.
  2. Dispositif de serrage selon la revendication 1, caractérisé en ce que le premier moyen de blocage (11) présente un levier (21) et une mâchoire de serrage (22) pour la connexion par serrage, de manière solidaire en rotation, de l'agencement du levier (21) et de la mâchoire de serrage (22) du premier moyen de blocage (11) à la mâchoire de serrage (14) dans laquelle est supporté le premier moyen de blocage (11).
  3. Dispositif de serrage selon la revendication 1 ou 2, caractérisé en ce que le premier moyen de blocage (11) présente, dans la région de son extrémité opposée à l'arbre (3), un dispositif de blocage (25) qui peut être amené en liaison fonctionnelle avec le deuxième moyen de blocage (12).
  4. Dispositif de serrage selon la revendication 3, caractérisé en ce que le dispositif de blocage (25) est disposé dans la région de l'extrémité du levier (21) qui est opposée à l'arbre (3).
  5. Dispositif de serrage selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le premier moyen de blocage (11) présente, du côté tourné vers le deuxième moyen de blocage (12), un évidement (26) qui est limité latéralement par des rouleaux (27), le deuxième moyen de blocage (12), lors du pivotement d'un premier moyen de blocage (11) dans sa position de pivotement définie, venant en contact avec les rouleaux (27), et, dans la position de pivotement définie, étant enfoncé dans l'évidement (26).
  6. Dispositif de serrage selon la revendication 5, caractérisé en ce que deux rouleaux (27) supportés à rotation limitent latéralement l'évidement (26).
  7. Dispositif de serrage selon la revendication 5 ou 6, caractérisé en ce que les axes de palier des rouleaux (27) sont disposés parallèlement à l'axe de pivotement de l'arbre (3).
  8. Dispositif de serrage selon l'une quelconque des revendications 1 à 7, caractérisé en ce que le logement (15) pour le premier moyen de blocage (11) est configuré sous forme de corps à symétrie de révolution par rapport à l'axe de pivotement (29) de l'arbre (3) avec une région de contact, réalisée sous forme profilée (20), avec le premier moyen de blocage (11).
  9. Dispositif de serrage selon la revendication 8, caractérisé en ce que la mâchoire de serrage (14) pour recevoir le premier moyen de blocage (11) est formée par le corps (15) à symétrie de révolution, une plaque (16) connectée à celui-ci et une partie de mâchoire de serrage (17), la partie de mâchoire de serrage (17) présentant un évidement (18) pour la connexion par engagement par correspondance de forme avec l'arbre (3).
  10. Dispositif de serrage selon l'une quelconque des revendications 2 à 9, caractérisé en ce que la mâchoire de serrage (22) du premier moyen de blocage (11) est réalisée sous forme de première moitié d'un collier de connexion et le levier (21) du premier moyen de blocage (11), dans sa région tournée vers la mâchoire de serrage (22) du premier moyen de blocage (11), est configuré de telle sorte qu'il ait la fonction de deuxième moitié du collier de connexion, la mâchoire de serrage (22) du premier moyen de blocage (11), dans la région d'une extrémité, étant connectée de manière à pouvoir pivoter avec le levier (21) et, dans la région de l'autre extrémité, étant connectée au levier (21) au moyen d'une vis (24).
  11. Dispositif de serrage selon l'une quelconque des revendications 1 à 10, caractérisé en ce que l'arbre (3), dans la région des extrémités d'arbre (5), présente une section transversale polygonale, de préférence une section transversale quadrilatérale, en particulier quadratique, et l'agencement du bras de serrage (4) et de la mâchoire de serrage (14) présentant une section transversale d'ouverture complémentaire pour recevoir l'extrémité d'arbre respective (5).
  12. Dispositif de serrage selon l'une quelconque des revendications 1 à 11, caractérisé en ce que le deuxième moyen de blocage (12) présente au moins un ressort hélicoïdal (32, 33), dont l'axe est disposé parallèlement à l'axe de pivotement (29) de l'arbre (3).
  13. Dispositif de serrage selon la revendication 12, caractérisé en ce que le deuxième moyen de blocage (12) présente un boulon de palier (31) connecté au boîtier (2), l'axe du boulon de palier (31) étant disposé parallèlement à l'axe de pivotement (29) de l'arbre (3) et l'au moins un ressort hélicoïdal (32, 33) étant fixé axialement dans des directions opposées.
  14. Dispositif de serrage selon la revendication 12 ou 13, caractérisé en ce que deux ressorts hélicoïdaux (32, 33) sont disposés de manière vissée l'un dans l'autre.
  15. Dispositif de serrage selon l'une quelconque des revendications 12 à 14, caractérisé en ce que les rouleaux (27), lors du pivotement du premier moyen de blocage (11) dans sa position de pivotement définie, viennent en contact et déforment radialement l'au moins un ressort hélicoïdal (32, 33, et, dans la position de pivotement définie, viennent en prise par l'arrière avec l'au moins un ressort hélicoïdal (32, 33) et s'appliquent contre celui-ci.
EP20130174605 2013-07-02 2013-07-02 Dispositif de serrage Not-in-force EP2821181B1 (fr)

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EP20130174605 EP2821181B1 (fr) 2013-07-02 2013-07-02 Dispositif de serrage

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EP20130174605 EP2821181B1 (fr) 2013-07-02 2013-07-02 Dispositif de serrage

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EP2821181A1 EP2821181A1 (fr) 2015-01-07
EP2821181B1 true EP2821181B1 (fr) 2015-03-04

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Publication number Priority date Publication date Assignee Title
EP3050673B1 (fr) * 2015-01-28 2017-03-01 UNIVER S.p.A. Dispositif de tension
ITUB20159213A1 (it) * 2015-12-22 2017-06-22 Pneumax S P A Gruppo di auto-ritenuta per unita' di bloccaggio e unita? di bloccaggio impiegante lo stesso
DE102020132617A1 (de) 2020-12-08 2022-06-09 Andreas Maier Gmbh & Co. Kg Spannvorrichtung

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* Cited by examiner, † Cited by third party
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DE29817335U1 (de) 1998-09-26 1999-02-18 Tünkers Maschinenbau GmbH, 40880 Ratingen Spannvorrichtung, insbesondere Kniehebelspannvorrichtung, vornehmlich zur Verwendung im Karosseriebau der Kfz-Industrie
TW487617B (en) * 2000-08-04 2002-05-21 Smc Kk Clamp apparatus
JP4892668B2 (ja) * 2007-02-15 2012-03-07 Ｓｍｃ株式会社 クランプ装置
EP2548700B1 (fr) 2011-07-20 2014-06-25 UNIVER S.p.A. Outil pneumatique

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