EP2900397B2 - Outil élargisseur à main - Google Patents

Outil élargisseur à main Download PDF

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Publication number
EP2900397B2
EP2900397B2 EP13770460.7A EP13770460A EP2900397B2 EP 2900397 B2 EP2900397 B2 EP 2900397B2 EP 13770460 A EP13770460 A EP 13770460A EP 2900397 B2 EP2900397 B2 EP 2900397B2
Authority
EP
European Patent Office
Prior art keywords
expanding
rotation
hydraulic piston
hydraulic
portable
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
EP13770460.7A
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German (de)
English (en)
Other versions
EP2900397B1 (fr
EP2900397A1 (fr
Inventor
Egbert Frenken
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.)
Gustav Klauke GmbH
Original Assignee
Gustav Klauke GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D41/00—Application of procedures in order to alter the diameter of tube ends
    • B21D41/02—Enlarging
    • B21D41/026—Enlarging by means of mandrels
    • B21D41/028—Enlarging by means of mandrels expandable mandrels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/08—Tube expanders
    • B21D39/20—Tube expanders with mandrels, e.g. expandable
    • B21D39/203—Tube expanders with mandrels, e.g. expandable expandable by fluid or elastic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/08—Tube expanders
    • B21D39/20—Tube expanders with mandrels, e.g. expandable
    • 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
    • B25B33/00—Hand tools not covered by any other group in this subclass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/02—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member
    • F15B15/06—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement
    • F15B15/063—Actuator having both linear and rotary output, i.e. dual action actuator

Definitions

  • the invention initially relates to a hand-held expander according to the features of the preamble of claim 1.
  • Such hand-held expanding devices possibly with a hydraulic piston/cylinder arrangement, have already become known in many respects.
  • the prior art also with regard to hydraulic or mechanical devices of this type in general, is about the WO 99/19947 A or the U.S. 6,532,790 B2 , U.S. 6,401,515 B2 , US6 276186 B1 or U.S. 6,230,542 B1 , the WO 02/062504 A1 or the U.S. 7,065,995 B2 , the WO 03/084719 A2 or the U.S. 7,254,982 B2 , US 412 868 B2 or U.S. 7,421,877 B2 and the EP 2 011605 A2 or the U.S. 2009/0008118 A1 to refer.
  • a screwing device in which a screw-in spindle is guided in a working head.
  • the screw-in spindle is equipped with a screwdriver bit on the tip side.
  • the invention is concerned with the task of specifying a hand-held expander that is advantageously designed.
  • the object of claim 1 solves this problem.
  • the segments can be moved via a gear.
  • the segments can thus not only be spread apart by such an application of force, but also moved in the circumferential direction. Since there are always gaps between segments with regard to segments, or transitions between individual segments, in which transitions the widening on a corresponding inner surface of the pipe or pipe end causes irregularities, such a displacement of the segments in the circular direction can result in a further position, with which such irregularities can be compensated.
  • the twisting of the expander head takes place relative to the handle part on which the user holds the hand-held expander. So he can at the same time apply the required counter-torque against the rotation. This is important for an expanding device, since the twisting occurs preferentially here if a certain expanding pressure is still applied to an e.g. inner surface of a pipe end is exerted by the working part, possibly expanding mandrels.
  • the rotation is triggered by falling below a certain oil pressure when the manual device or the expanding device is actuated hydraulically by means of the electric motor.
  • a further preferred embodiment relates to the design of the widening segments in relation to the rotation.
  • a segment has a maximum extent in the circumferential direction by a first circumferential angular amount.
  • the rotation in the circumferential direction takes place by a second angular amount, it being provided that the first and the second angular amount are different.
  • a twisting for example in relation to a further expansion process, takes place in such a way that, after the twisting, outside the transition between two segments is applied.
  • the second angular amount is smaller than the first angular amount, it being particularly preferable to provide the second angular amount corresponding to approximately half of the first angular amount.
  • the working head or the expanding head can be rotated without limiting the angle of rotation.
  • a rotation always takes place only by an angular amount that is significantly smaller than it corresponds to a full rotation, ie 360 degrees.
  • a rotation of 15 or 30 degrees For example, a rotation of 15 or 30 degrees.
  • each further rotation takes place in the same direction of rotation, without there being a limitation of the angle of rotation, so the working or expanding head would first have to be rotated back again in order to then enable a further rotation in the same direction.
  • the rotary motion process of the working head or expanding head is triggered without further user intervention being required.
  • a triggering of a working process ie for example a pressing or widening process
  • the rotation takes place in a predetermined time sequence with regard to triggering a return movement of the working part or actuating part.
  • the rotation can initially begin at the same time as the initiation of a work process, that is to say approximately parallel to the beginning of a movement of the first hydraulic piston.
  • the rotation can also take place simultaneously beginning with the beginning of a return movement of the first hydraulic piston or more generally after the completion of the work process.
  • this time delay can also be predetermined by the fact that the hydraulic pressure acting on the actuating part moving back is taken into account, if a hydraulic piston/cylinder arrangement is involved. Since, when reversing, the drop below a certain pressure level occurs in a manner that is approximately reproducible in terms of time at the same point in time, beginning with the triggering of reversing, a chronological sequence is also achieved in this respect.
  • the movement of the actuator and the rotation of the working head are effected by hydraulic fluid pressurized by the engine.
  • Two hydraulic piston/cylinder arrangements are then provided in a suitable manner for this purpose.
  • the working head or expanding head cannot be moved without the action of a pressurized hydraulic medium.
  • a pressurized hydraulic medium outside of an actuation to trigger a work process with the hand-held tool, and more preferably outside of the specific time window in the course of the retraction of the operating part, in which the rotation of the working head takes place, there is therefore preferably a rigid coupling between the working head and the remaining parts of the device .
  • the movement of the actuating part and the rotation of the working head takes place by moving a hydraulic piston in a hydraulic cylinder, the hydraulic piston being prestressed into an initial position by a return spring.
  • a first hydraulic piston is provided for moving the actuating part and a second hydraulic piston is provided, which second hydraulic piston produces the rotation.
  • the one providing the rotation second hydraulic piston is loaded in its initial position with a greater prestressing force than the first hydraulic piston acting on the actuating part. This at least relates to a first movement section of the first hydraulic piston.
  • the load mentioned results from the effective area of the hydraulic piston on the one hand and the force of the acting return spring on the other.
  • the hydraulic piston also moves back into its starting position before the hydraulic piston acting on the actuating part has reached its starting position again, so that the rotary movement of the working head, which is preferably derived from the return movement of the hydraulic piston that acts on the actuating part, is completed, before the hydraulic piston acting on the control element has reached its starting position again.
  • a rotary movement of the working head only takes place when the actuating part is retracted or at least is essentially retracted.
  • the expanding mandrel is moved back so far at the beginning of the rotary movement that the segments can be rotated in the circumferential direction within the pipe end to be expanded without the user of the expander having to apply a larger counterforce .
  • the first hydraulic piston has a restoring spring, which has a different spring characteristic depending on the restoring path. Namely, a very high spring force is produced on a first part of the reset path and a lower spring force is produced on a further part of the reset path. During the period in which this high restoring force of the restoring spring acts, the pressure in the acting hydraulic medium is so high that the second hydraulic piston does not perform a restoring movement. Rather, only when the lower spring force of the return spring of the first hydraulic piston acts.
  • a manual device designed as a hand-held expansion device 1, which has an electric motor, not shown in detail.
  • the hand-held expander 1 also has a working head designed as an expander head 2, which is used to expand pipe ends (see also comparison Figures 3 and 6 ).
  • the working head 2 has a further expansion mandrel 3, see about figures 2 and 3 , trained operator.
  • the expanding head 2, in the embodiment together with the expanding mandrel 3 is motorized, d. H. ultimately triggered by the activity of the electric motor rotatable. Namely about a first longitudinal axis y, which also corresponds to the direction of travel of the expanding mandrel 3, see arrow P.
  • the expanding head 2 has segments 4 which can be moved radially outwards through the expanding mandrel 3 in order to expand a pipe end. These segments 4 are arranged in a circle next to one another. In the circumferential direction of such a circle K, see also figure 7 , The segments 4, in the embodiment also together with the expanding mandrel 3, so that there is no relative movement between the expanding mandrel 3 and the segments 4 as a result of the rotation, can be rotated in the manner described.
  • Another free end E 2 is given by the accumulator part 5 of the device, designed here as a base.
  • a grip area 6 of the hand-held expander 1 which accordingly faces away from the first free end E1 of the expander head 2 extends between the expander head 2 and the second free end E 2 of the expander.
  • the gripping area has a direction of extension that corresponds to a second longitudinal axis x of the device.
  • the longitudinal axes x, y can also be provided in an extension deviating from a right angle, in particular in an obtuse angle.
  • the widening segments 4 have a circular segment-like cross-section and have a length 1 that can be inserted into a pipe end, which preferably corresponds to the total diameter of the combined segments in the non-actuated state or is greater, up to about two or three times the diameter.
  • a stop wall 7 surrounding the segments 4 perpendicularly and in the shape of a circular ring. It serves to limit the introduction of the segments 4 into a pipe end to be expanded.
  • the segments are mounted so that they can be moved radially.
  • the expanding mandrel 3 is acted upon by a first hydraulic piston 9 which is arranged in a first hydraulic cylinder 10 . Both the expanding mandrel 3 and the hydraulic piston 9 move along the first longitudinal axis y. In the exemplary embodiment and preferred, whereby this is also of particular importance for the working device in general and/or the hydraulic piston/cylinder arrangement as such, the first hydraulic cylinder 10 together with the hydraulic piston 9 arranged movably therein and the working part, here the expanding mandrel 3 or a total of the working head 2, rotatably arranged.
  • the first hydraulic cylinder 10 is preferably rotatably mounted in a receiving head 11 .
  • a first larger pot-shaped recess 12 is formed in detail in the receiving head 11, which in any case exceeds an inner diameter, but preferably also an outer diameter of the first hydraulic cylinder 10 in its dimensions.
  • a second, preferably coaxial to the first longitudinal axis y and smaller diameter recess 13 is preferably formed in the receiving head 11, in which a tapered shank of the first Hydraulic cylinder 10 is added. Sealing is preferably only provided in the region of this tapered shaft 14, in the exemplary embodiment by means of an O-ring 15 that seals as a result of an insertion groove. This also ensures that the recess 12 remains free of hydraulic medium.
  • a second hydraulic piston 16 running in a second hydraulic cylinder 17 is preferably provided in alignment with the second longitudinal axis x. This second hydraulic piston 16 is preferably provided solely for the rotational movement of the first hydraulic piston 10 or the working head 2 .
  • Both the first hydraulic piston 9 and the second hydraulic piston 16 are preferably acted upon by the same hydraulic medium.
  • the same hydraulic pressure is preferably applied to both hydraulic pistons 9, 16 in each case.
  • a hydraulically parallel line 19, indicated here, is provided for the hydraulic medium, which opens into the recess 13 and through a bore 20 in the tapered shaft part 14 of the first hydraulic cylinder 10 to act on the application surface 21 of the first Hydraulic piston 9 is passed.
  • the hydraulic expanding device 1 is constructed in the same way as that from the above-mentioned WO 03/084719 A2 (or the U.S. 7,254,982 B2 , U.S. 7,412,868 B2 or U.S. 7,412,877 B2 ) well-known hydraulic implement. That means it closes, preferably in a parallel arrangement to form one Return valve, a pump, which is acted upon by a gear and to which gear, as already described, an electric motor is preferably located in the handle area 6, and finally a plug-in receptacle for the accumulator and the accumulator.
  • the first hydraulic cylinder 10 in the exemplary embodiment and preferably in its region accommodated in the first recess 12 has external teeth 22 which are formed overall following a circular line.
  • Individual teeth 23 are formed in such a way that, all teeth 23 in the same direction, they have an overflow bevel 24 in a first circumferential direction U 1 and a blocking face 25 in the second circumferential direction U 2 Circle perpendicularly, or also radially. In the latter case, it would have an undercut accordingly. It can also run with a positive inclination in comparison, as long as no overflow occurs due to the entrained part described below.
  • a drag part 26 is connected to the second hydraulic piston 16, which, when the hydraulic piston 16 is extended, i.e. when pressure is applied, in which operating state the working part or the expanding mandrel in principle also extends, moves in an overlapping movement to one or more of the teeth following in the circumferential direction U 1 23 moved, see also figure 8 .
  • a Blocking part 27 is provided, which has a blocking head 28 that can be disengaged, for example, against spring force.
  • the blocking head 28 can be seen in the position according to FIG figure 4 on the blocking breast 25 of a tooth 23 in such a way that the tendency of the movement of the drag part 26 possible rotation of the working head 2 in the circumferential direction U 1 is thereby blocked.
  • the second hydraulic piston 16 is loaded by a second restoring spring 30 into its initial position, see for example FIG.
  • the load when the hydraulic pressure is applied is given by the spring force of the return spring 30 on the one hand and the effective piston area on the other hand, in the rest position.
  • the second hydraulic piston 16 is greater than that of the first hydraulic piston 9 (given there by the action of the first return spring 29 and the relevant effective loading surface of the first hydraulic piston 16).
  • the entrainment part 26 is preferably rotatably connected to the second hydraulic piston 16 by means of a rotary axis 31 . More preferably, it is by means of a compression spring 32 in an opposite to the pivoted position according to figure 4 swung out position according to figure 8 prestressed.
  • a compression spring 32 in an opposite to the pivoted position according to figure 4 swung out position according to figure 8 prestressed.
  • the return valve opens and both the first hydraulic piston 9 and the second hydraulic piston 16 run in Back towards its starting position because the back pressure of the hydraulic medium decreases accordingly.
  • the second hydraulic piston 16 pulls the first hydraulic cylinder 10 in the circumferential direction U 2 by means of the dragging part 26 and thus rotates the working head 2.
  • FIG. 9 shows the implementation and effect of an expansion process with regard to a tube 36 of a relevant tube end 37.
  • the pipe end 37 is expanded radially in relation to the adjoining area of the pipe 36 .
  • the segments 4 are in accordance with a position figure 7 proceedings.
  • the movement is preferably synchronized with an expansion process in such a way that it takes place before the segments 4 are detached from the inner surface 38 of the tube 36, since initially as a result of an elastic return of the tube 36, which depends on the material from which the tube 36 exists, can vary, there is still a force-stressed concern of the inner surface 38 of the tube 36 on an outer surface of the segments 4 . Accordingly, a user has to absorb a certain restoring force of the device by hand, which is made significantly easier by arranging the working head 2 and the first hydraulic cylinder 10 according to the first longitudinal axis y and the grip area 6 according to the second longitudinal axis x.
  • the working head 2 is further attached to the first hydraulic cylinder 10 in an interchangeable manner. Here preferably such that the expanding mandrel 3 is not replaced.
  • the detachable attachment is achieved by a screw connection 39 between the working head 2 and an outer surface of the first hydraulic cylinder 10 , with an end position that has been reached being able to be secured by a locking screw 40 .
  • a screw connection 39 between the working head 2 and an outer surface of the first hydraulic cylinder 10 , with an end position that has been reached being able to be secured by a locking screw 40 .
  • attachment part 41 can be attached to the front side, facing the first end of the device, on the first hydraulic cylinder 10 attached intermediate part 42 in the manner described.
  • Figure 1 shows an alternative embodiment of the expander or, more generally, the first and second hydraulic piston/cylinder assemblies.
  • the first return spring 29 is designed in two parts. Namely in a first partial spring 44 and a second partial spring 45.
  • the second partial spring 45 which is assigned to the first free end E1, has a greater spring force than the first partial spring 44.
  • the second partial spring can also be seen in the exemplary embodiment from Plate springs assembled, while the first partial spring 44 is a conventional coil spring.
  • the spring force of the first partial spring 44 is preferably selected such that at the beginning of a return movement, ie from the position according to FIG figure 10 , As a result, such a high pressure is achieved in the hydraulic medium that the second hydraulic piston 16 does not retract until the first partial spring 44 has fully expanded the first return spring 29 is. It is thus ensured that the working part or, in the exemplary embodiment, specifically the expanding mandrel 3 has been retracted before the first hydraulic cylinder 10 is rotated.
  • first partial spring 44 is supported on the one hand on an end inner surface of the first hydraulic cylinder 10 and on the other hand on an intermediate flange 47 which is arranged so as to be movable relative to the second hydraulic piston 16 and surround it.
  • the intermediate flange 47 also serves to support the second partial spring 45 in the direction of the first free end E 1 .
  • the manual device 48 can be actuated by pivoting the handles 49 and 50 .
  • the handle 49 which is so far fixed - is connected to the working head, except for the essential rotational mobility of the working head, can be referred to as a fixed handle.
  • the handle 50 is a movable handle.
  • FIG. 12 As can be seen from the views of figures 12 and 13 also shows is with the movable handle 50 via a pump assembly 51, which is detailed in accordance with EP 927 305 B1 ( U.S. 6,206,663 B1 ) can be formed, a hydraulic pressure is generated.
  • a hydraulic reservoir 52 is housed in the fixed handle 49, for example. The hydraulic pressure thus generated or the corresponding delivery of the hydraulic medium is then applied to the second hydraulic piston 16 and the first hydraulic piston 9 in order to carry out an expansion process in the manner also previously described. Also in this embodiment for carrying out an expansion process.
  • a drive unit 53 is provided, with which hydraulic pressure is generated in this exemplary embodiment and hydraulic medium is conducted through a connected hydraulic hose 54 to the working head connected at the other end of the hydraulic hose 54 via this embodiment.
  • a first hydraulic piston 9 and a second hydraulic piston 16 are also provided here in the same way in the working head.
  • the working head corresponds to the prescribed working heads, and the description of a work sequence is also applicable here in the same way.
  • connection nut 55 provides a connection to a connection part 56 to which the hydraulic hose 54 is ultimately attached in the usual way.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Analytical Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Actuator (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Press Drives And Press Lines (AREA)
  • Shearing Machines (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Manipulator (AREA)
  • Soil Working Implements (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)

Claims (11)

  1. Dispositif d'expansion manuel (1) pour l'expansion d'extrémités de tubes (37), comprenant une partie formant poignée et une tête d'expansion (2) comportant plusieurs segments (4) lesquels segments (4) sont agencés les uns à côté des autres de manière circulaire transversalement à une direction d'expansion et peuvent être déplacés radialement par rapport à l'agencement circulaire au moyen d'un mandrin d'expansion (3) agissant sur les segments (4), caractérisé en ce que les segments (4) peuvent tourner ensemble avec le mandrin d'expansion de manière hydraulique que le mandrin d'expansion est mobile entre une position de travail et une position initiale, que la partie de travail depuis la position de travail dans la position initiale, que la tête d'expansion (2) peut tourner ensemble avec le mandrin d'expansion (3) que le mouvement du mandrin d'expansion (3) est effectué par le déplacement d'un premier piston hydraulique (9) dans un premier cylindre hydraulique (10), dans lequel le piston hydraulique (9) est sollicité dans une position initiale par un premier ressort de rappel (29) et en ce que le mouvement de la tête d'expansion (2) s'effectue par un deuxième piston hydraulique (16) dans un deuxième cylindre hydraulique (17), dans lequel le piston hydraulique (16) est sollicité dans une position initiale par un deuxième ressort de rappel (30).
  2. Dispositif d'expansion manuel selon la revendication 1, caractérisé en ce qu'un segment (4) présente une plus grande extension dans la direction circonférentielle sur une première valeur angulaire et en ce que la rotation dans la direction circonférentielle s'effectue sur une deuxième valeur angulaire, dans lequel les première et deuxième valeurs angulaires sont différentes, la deuxième valeur angulaire étant de préférence plus petite que la première valeur angulaire, la deuxième valeur angulaire correspondant en outre préférentiellement approximativement à la moitié de la première valeur angulaire.
  3. Dispositif d'expansion manuel selon l'une des revendications précédentes, caractérisé en ce que la tête d'expansion (3) peut tourner sans limitation de l'angle de rotation tout au moins vis-à-vis de rotations successives.
  4. Dispositif d'expansion manuel selon l'une des revendications précédentes, caractérisé en ce qu'une rotation a toujours lieu dans le même sens de rotation.
  5. Dispositif d'expansion manuel selon l'une des revendications précédentes, caractérisé en ce qu'un déclenchement du mandrin d'expansion (3) conduit à une rotation de la tête d'expansion (2) sans qu'une autre intervention de l'utilisateur soit nécessaire.
  6. Dispositif d'expansion manuel selon l'une des revendications précédentes, caractérisé en ce que la rotation s'effectue suivant un déroulement temporel prédéterminé par rapport à un déclenchement d'un rappel du mandrin d'expansion (3).
  7. Dispositif d'expansion manuel selon l'une des revendications précédentes, caractérisé en ce qu'il est actionnable par un moteur électrique et un moyen hydraulique.
  8. Dispositif d'expansion manuel selon la revendication 7, caractérisé en ce que la rotation de la tête d'expansion (2) est effectuée par un moyen hydraulique mis sous pression par le moteur électrique.
  9. Dispositif d'expansion manuel selon l'une des revendications précédentes, caractérisé en ce que le deuxième piston hydraulique (16) qui provoque la rotation est soumis dans sa position initiale à une force de précontrainte plus grande que le premier piston hydraulique (9) qui agit sur le mandrin d'expansion (3).
  10. Dispositif d'expansion manuel selon l'une des revendications précédentes, caractérisé en ce que le premier ressort de rappel (29) est constitué de deux ressorts partiels (44, 45), dans lequel les ressorts partiels (44, 45) présentent de préférence des forces de rappel différentes.
  11. Dispositif d'expansion manuel selon l'une des revendications précédentes, caractérisé en ce que le dispositif d'expansion manuel comprend successivement le long d'un axe longitudinal une batterie ou accumulateur, le moteur électrique et un dispositif de transmission, et en ce qu'une direction de déplacement du mandrin d'expansion (3) s'étend selon un angle par rapport à l'axe longitudinal.
EP13770460.7A 2012-09-28 2013-09-26 Outil élargisseur à main Not-in-force EP2900397B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012109255.9A DE102012109255A1 (de) 2012-09-28 2012-09-28 Handarbeitsgerät, Hand-Aufweitgerät, hydraulische Kolben-/Zylinderanordnung und Verfahren zum Betreiben eines Handarbeitsgerätes
PCT/EP2013/070038 WO2014049035A1 (fr) 2012-09-28 2013-09-26 Outil de travail à main, outil élargisseur à main, système piston/cylindre hydraulique et procédé pour faire fonctionner un outil de travail à main

Publications (3)

Publication Number Publication Date
EP2900397A1 EP2900397A1 (fr) 2015-08-05
EP2900397B1 EP2900397B1 (fr) 2019-06-19
EP2900397B2 true EP2900397B2 (fr) 2022-07-13

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP13770460.7A Not-in-force EP2900397B2 (fr) 2012-09-28 2013-09-26 Outil élargisseur à main

Country Status (14)

Country Link
US (1) US10406586B2 (fr)
EP (1) EP2900397B2 (fr)
KR (1) KR20150064105A (fr)
CN (1) CN104797357B (fr)
AU (1) AU2013322656B2 (fr)
BR (1) BR112015006915A2 (fr)
CA (1) CA2886913A1 (fr)
DE (1) DE102012109255A1 (fr)
ES (1) ES2745257T3 (fr)
IN (1) IN2015DN02591A (fr)
MX (1) MX2015003889A (fr)
RU (1) RU2663668C2 (fr)
WO (1) WO2014049035A1 (fr)
ZA (1) ZA201502847B (fr)

Families Citing this family (24)

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DE202012104763U1 (de) * 2012-12-07 2014-03-11 Rehau Ag + Co. Werkzeugvorrichtung zum Anschluss eines Kunststoffrohres oder eines Metall-Kunststoff-Verbundrohres an einen Fitting mit einer Schiebe- oder Presshülse
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US20150258598A1 (en) 2015-09-17
CN104797357A (zh) 2015-07-22
CA2886913A1 (fr) 2014-04-03
RU2663668C2 (ru) 2018-08-08
KR20150064105A (ko) 2015-06-10
ZA201502847B (en) 2016-11-30
WO2014049035A1 (fr) 2014-04-03
EP2900397B1 (fr) 2019-06-19
AU2013322656B2 (en) 2017-02-16
US10406586B2 (en) 2019-09-10
IN2015DN02591A (fr) 2015-09-11
BR112015006915A2 (pt) 2017-07-04
MX2015003889A (es) 2015-11-18
ES2745257T3 (es) 2020-02-28
EP2900397A1 (fr) 2015-08-05
AU2013322656A1 (en) 2015-05-07
CN104797357B (zh) 2017-08-04
DE102012109255A1 (de) 2014-04-03
RU2015115942A (ru) 2016-11-20

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