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EP2155438B1 - Vorkalibrierter manueller drehmomentschraubendreher - Google Patents

Vorkalibrierter manueller drehmomentschraubendreher Download PDF

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Publication number
EP2155438B1
EP2155438B1 EP08759125A EP08759125A EP2155438B1 EP 2155438 B1 EP2155438 B1 EP 2155438B1 EP 08759125 A EP08759125 A EP 08759125A EP 08759125 A EP08759125 A EP 08759125A EP 2155438 B1 EP2155438 B1 EP 2155438B1
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EP
European Patent Office
Prior art keywords
torque
handle
calibrated
modules
seat
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Application number
EP08759125A
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English (en)
French (fr)
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EP2155438A1 (de
Inventor
Rino Zanchin
Alberto Zanchin
Raul Cesarin
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Amu Srl
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Amu Srl
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Publication of EP2155438A1 publication Critical patent/EP2155438A1/de
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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
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
    • B25B23/142—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers
    • B25B23/1422—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers torque indicators or adjustable torque limiters
    • B25B23/1427—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers torque indicators or adjustable torque limiters by mechanical means
    • 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
    • B25B15/00—Screwdrivers
    • 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
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
    • B25B23/142—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers

Definitions

  • the present invention relates to a pre-calibrated manual torque screwdriver whose pre-calibration device is contained within the handle. It consists of a plurality of thin cylindrical sectors for individual and modular pre-calibration, which are arranged mutually side-by-side coaxially and are each provided with a central female mating seat in order to mate with a corresponding number of male seats provided on the outer surface of the shanks which can be inserted longitudinally in the handle, are interchangeable and are provided, at one end, with the shape suitable to work with the seat formed on the head of the screw to be screwed in or loosened.
  • the present invention solves the cited problem, providing a prepared and complete tool, which therefore does not require the operator to perform manual calibrations on the spot; it is instead sufficient to use the stem provided with the tip suitable for the screw, which ensures the exact torque for that specific type of screw.
  • the second patent instead provides technically a traditional screwdriver handle in which the torque is adjusted by screwing or unscrewing the handle itself with respect to a single coupling of the universal type which is suitable to accommodate the tips of the screwdriver.
  • the experience of the operator in knowing the torque in relation to the type of screw to be tightened, and in therefore preparing said handle for this purpose is needed. Therefore, the disadvantages and possible drawbacks in providing an incorrect torque are evident, and accordingly there is no assurance and guarantee of safety in the correct use of the tool.
  • each modular ring can be used in its pre-calibrated torque action or can be unused: this is possible by inserting longitudinally, through the central seat of the internal bush which is coupled in rotation by the action of the tangent balls, an elongated shank which has, on its outer surface, the mating seat (for example of the hexagonal male type), mating perfectly with the internal seat of each individual bush. As the mating length between the outer male surface of the shank changes, one or more pre-calibrated modular rings contained in the handle are affected and therefore different combinations of torques are determined.
  • the shank has, at its end, the tip suitable for specific screws and at the same time a different length of the part affected by mating with the internal bushes so as to accordingly determine a different torque as provided by the technical standards.
  • the tool is composed of a handle which contains internally a plurality of pre-calibrated side-by-side modular rings and a series of different shafts which can be associated there with by longitudinal insertion and have different end shapes and different mating seats in the opposite side.
  • the aim of the present invention is to provide a torque screwdriver with pre-calibrated manual handle which can be associated, by insertion, with a plurality of elongated interchangeable stems which have coupling shafts which are particularly contoured and machined in mutually different manners in relation to the variation of the type of tip suitable for screwing or unscrewing different screws.
  • the aim and objects of the invention are achieved according to the characteristics of the main claim and/or of any other claim cited in this patent text by providing a pre-calibrated manual torque screwdriver which contains, within the handle, the dynamometer device which can be mated and associated with a series of different shanks which can be inserted as needed from the front part of the handle in order to be used to screw or unscrew the screws, by imparting an appropriate torque according to the technical standards.
  • the handle of the screwdriver which has a traditional or anatomical shape, contains the torque device, which cooperates in coordination with a series of shanks which are provided with the tips suitable for screws, which can be inserted from the front part and are interchangeable.
  • Said shanks can be of various length and cross-section, but the part that mates with the handle has an identical length and a different machining from one shank to another. This occurs because each shank has a different tip suitable to work with a specific shape or head of a screw having various technical characteristics (different thread diameters) and therefore needs a different and appropriate moment of torque.
  • This difference is enhanced in the part mated with the pre-calibrated device of the handle and is achieved by providing one or more male mating seats (for example having a hexagonal cross-section) with a different length which is suitable to mate with the torque device within the handle, provided in the form of a female shape having a suitable cross-section.
  • the parts that are not affected by the mating are slightly modified.
  • shank of the screwdriver can of the monolithic type, i.e., a contoured tang for insertion in the handle and a single or double tip equipped in a fixed manner so as to work on specific screws, or also possibly of the complex modular type, having only the tang contoured suitably for insertion in the handle provided with a tip which is interchangeable in relation to the geometric contour of the shape on the screw on which one is to work.
  • the modular torque device fitted within the handle can be different and can be constituted by a plurality of unitary, independent and coaxial elements, which are arranged mutually side by side and are separated by a thin washer. Each of these elements is locked rigidly to the container, preventing their rotation.
  • Each module has, at the center, a bush which is free to rotate and has, at the center, a coaxial hole which reproduces a female mating seat (for example a hexagonal one, but it may have any geometric shape), while along the outer surface it has parallel seats which are equidistant from the central seat and have a semicircular cross-section.
  • Such grooves are numerically identical or greater than the recesses provided on the torque module, and these last recesses accommodate suitable rollers or balls and springs.
  • the recesses provided on each torque module are for example six, but their number can be different. They are arranged equidistantly on a plane which is perpendicular to the central axis and are inclined with respect to the central axis and are inclined with respect to the tangency between the module and the central bush.
  • An elastic spring arranged from the outside inward (with a force suitable for the purpose) and a cylindrical roller arranged in position toward the internal tangency are inserted within each rectilinear recess.
  • each module determines a combined thrust on the external grooves of the central bush, since each roller partly mates against the grooves of the central bush, preventing its rotation in both directions.
  • This total action of the rollers produces a torque, i.e., the sum of the forces (of the springs) by their lever arm. This prevents the rotation of the internal bush, unless a rotation action is applied thereto which overcomes the torque created by the individual springs and moves the rollers backward, thus allowing its rotation.
  • Each modular torque element has a given thickness and therefore acts on a similar length of the shank if it is provided with a mating seat.
  • Multiple unitary modules arranged side by side within the handle determine a different combination of torques: from a minimum one (a value which corresponds to the value provided by the individual module) to a maximum one (related to the sum of the individual values of all the modules).
  • the torque modules can be all identical or can also have different technical characteristics, determining identical or different torques.
  • the various interchangeable shanks also have a different machining of the parts mated to the internal bushes, so that a different length of the shank-bush coupling also determines a different torque, since one or more torque modules are affected.
  • the torque screwdriver allows to have a pre-calibrated torque which is higher during unscrewing than during screwing; this is achieved by means of a tangent inclination of the tensioning device (elastic spring and sliding roller) with respect to the perpendicularity of the center of rotation of the rotating central body or bush.
  • the torque module of the type which can be arranged side by side within the handle of the screwdriver can be provided, instead of by means of delimited recesses (by plastic molding) with contact at one end of the elastic spring and toward the inside with the roller, by means of rectilinear sliding seats, which are again perpendicular but are of the through type, in order to allow to position therein a roller (internally), an elastic spring (in an intermediate position) and an adjustment screw (externally).
  • Said screwdriver with a handle provided with a torque device which is of the multiple type (since it is formed by a plurality of side-by-side and independent unitary modules) finds an interesting application in the field of the interchangeability of plates made of hard and/or sintered metals on multiple tools such as mills and the like, which require, for obvious safety, an assurance of the locking and tightening torque of said plates on the central containment body, and also in the high-technology sector, in the aeronautical and aerospace sector and in the construction of scientific and sanitary devices and instruments, where a high performance of the manual tool is required which is capable of ensuring with certainly a pre-calibrated tightening torque for screwing the screws and/or a higher one during unscrewing.
  • the screwdriver handle 1 with pre-calibrated torque device contained inside the handle is suitable for tightening series of screws of various sizes by using suitable and interchangeable stems 2, of the single type (having a single end provided with a screwdriver tip) and machined particularly with variously positioned mating seats 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8 in the part of the tang that has a hexagonal cross-section, i.e., the part that is inserted in the front part of the handle and mates with the various internal torque modules.
  • the invention relates to a handle 1 which contains internally a plurality of disk-like torque devices arranged side by side and at right angles and coaxially with respect to the longitudinal axis of the handle (in this case five are drawn, but they can be in any number), suitable for pre-calibrated tensioning.
  • the handle 1 which is provided hollow and made of metallic and/or plastic material, has a front perforated bush 1.1 (which can also be made of synthetic material, for example Teflon or equivalents) in which the shank 2 is inserted from the tang end and is provided, at the other end, with the tip suitable to mate with the head of the screw to be screwed or unscrewed. Said handle is closed at the rear by a hemispherical cover 1.2 with a screw.
  • a front perforated bush 1.1 which can also be made of synthetic material, for example Teflon or equivalents
  • Said handle is closed at the rear by a hemispherical cover 1.2 with a screw.
  • the handle 1 is elongated and the stem 2 inserted axially therein is locked in position by virtue of the end mating in the seat 4 of a retention ball 6 which is subjected to the force of the spring 7 which is adjusted by means of a small screw 8 for containment in the respective seat obtained within the end cover 1.2.
  • Five individual coaxial, cylindrical individual unitary torque modules are inserted side by side within the cylindrical handle and are kept pressed against each other by the end cover 1.2 and by a sealing rubber gasket 21.
  • Each torque module is formed in turn by a body 13 and by a disk-like cover 12, which mate with each other.
  • the body of the module 13, in the internal part, has a series of six seats or recesses 15 (their number can be changed in any case in relation to the type of cross-section of the stem being used), which are mutually equidistant and lie on a plane which is perpendicular with respect to the central axis, where a through hole 17 is provided in order to allow the passage of the tang of the shank of the stem 2.
  • the recesses 15 have a direction which is inclined with respect to a diameter which is coaxial with respect to the axis of the through hole and are designed so that each one contains an elastic spring 11 of suitable thrust force which is directed toward the internal part of said module.
  • seats 19 which are connected for sliding and containment of the cylindrical rollers 10 and are provided at right angles to the recesses of the springs and have, in the internal part, toward the central hole, a partially free surface so as to make a corresponding amount of lateral surface of the rollers contained therein protrude.
  • the body of the cylindrical module is extensively hollow, leaving a thin base wall for containment, and is perforated with a through hole 17 at the center.
  • the central space must be used to accommodate an internal bush 9, which is preferably made of synthetic material, which is free to rotate about its own axis and which has, along its lateral surface, six equidistant hollows 20, which partially form the contact seat for the rollers 10; the internal part has a female through mating seat of the hexagonal type 22 and of course said cross-section can be different in its shape and dimensions in relation to the type of seat formed on the tang of the shank 2.
  • Said mating seat 22 is used to connect the part of the tang of the shank 2 to the body of the torque module by means of the rollers 10, which partially make contact with the seats 20 of the bush 9.
  • Both the disk-like element 12 and the body 13 have, on the outer surface, in a longitudinal direction (which is parallel to the central axis), three through grooves 14 arranged at 120°. Said grooves are meant to lock the torque module as a whole to the internal body of the handle 1, so as to avoid its rotation.
  • the body of the handle in fact can have teeth which protrude inward, are longitudinal and rectilinear and arranged at 120° if the handle is produced with the method of molding thermoplastic material made of plastic or light alloy, in order to lock the modules within the handle once they are arranged mutually side by side.
  • said grooves 14 can be used to lock the modules also by passing through them thin rods 5 which lock against the body of the handle upon closure with the end cover 1.2 of the handle 1.
  • the handle of the screwdriver I contains internally, in this example, five pre-calibrated, independent, side-by-side and coaxial torque modules; at this point, if a shank 2 is inserted from the front part of the handle 1.1, its mating tang is particularly machined and contoured 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, and in this manner the mating length of the shank with the internal bush or bushes 9 is determined in order to affect one or more pre-calibrated torque modules, thus determining a total torque which is suitable for that type of screwdriver shape.
  • the part of the tang of the shank having a hexagonal cross-section in fact mates with a similar female seat 22 provided in the internal bush 9 of one or more modules and is subjected to the force of the respective springs 11 which act on the rollers 10 which determine as a whole the desired torque.
  • the inclination of the forces of the springs with respect to the tangency of the internal bush 9 determines as a whole a pre-calibrated total moment of torque for screwing and determines a higher one for unscrewing.
  • the drawings show a second example of embodiment of the invention, which consists of a different manner of constructing the pre-calibrated torque module. It is in fact built as a single element 23 shaped like a cylinder with a central hole which has three hollows 26 arranged at 120° on its outer surface in order to allow its locking (prevention of rotation about its own axis) within the body of the handle. Said module has, on a plane which is perpendicular to the central axis, six radially equidistant holes 24 every 60°, which start externally from the lateral surface and are inclined so as to be almost tangent to the longitudinal central through hole.
  • Each one of said holes 24 ends with an internal perpendicular seat 25, with a longitudinal direction, which is wide enough to allow the sliding and accommodation of a cylindrical roller.
  • the pre-calibration of said module occurs during its insertion within the handle: the six cylindrical rollers 10 are arranged within their seat, and then a small elastic spring 11 is inserted in each one of the holes 24 until it is in contact with the respective rollers, and finally a small end ball 27 is inserted which is simply meant to keep and retain one end of the elastic spring perfectly aligned with the hole instead of allowing it to go into contact obliquely against the internal surface of the handle.
  • the internal bush 9 is inserted at the center in the pre-calibrated individual module and a thin washer with a large central hole is interposed immediately coaxially in order to separate the individual modules thus prepared.
  • the pre-calibrated modules 23 are inserted within the handle, making the outer grooves 26 coincide with the respective rotation-preventing elements 5 jointly connected to said handle.
  • the closure plug 1.2 of the handle is locked, providing a handle which is perfectly rigid and ready to be used without the need for further calibrations by the operator.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Ropes Or Cables (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)

Claims (13)

  1. Ein vorkalibrierter manueller Drehmomentschraubendreher, der im Griff (1) die vorkalibrierte Drehmoment-Vorrichtung enthält, wobei der zentrale Teil als aufnehmender passender Sitz wirkt, wobei die Module in Koordination mit einer Vielzahl von Schäften (2) zusammenwirken, die mit Angeln austauschbar sind, welche vom vorderen Teil (1.1) des Griffs her eingesetzt werden können und am anderen Ende die Spitze oder Form des Schraubendrehers haben, während die Angeln oder der Teil, der eingesetzt werden kann, mit dem vorstehenden Sitz oder Sitzen verschiedener Länge ausgestattet sind, wobei der Griff (1) eine verlängerte und hohle Form hat und hinten mit einem Schraubverschluss (1.2) verschlossen werden kann, und eine vordere Öffnung (1.1) zum Einführen des Schafts,
    dadurch gekennzeichnet, dass die vorkalibrierte Drehmoment-Vorrichtung aus mehreren einzelnen Modulen zusammengesetzt ist, die nebeneinander angeordnet werden können und modular sind, wobei die Angeln oder der Teil, der eingesetzt werden kann, geeignet sind, mit einem oder mehreren der Drehmomentmodule zusammenzupassen, und wobei die vorkalibrierten Drehmomentmodule (12, 13, 23) so gehalten werden, dass ihre Drehung um sich selbst (5, 14, 26) nicht zugelassen wird, wobei die Module vom individuellen Typ sind und gemeinsam Seite an Seite zwischen ihnen angeordnet werden können, um einen Stapel unabhängiger Seite an Seite angeordneter Elemente zu bilden, von denen jedes im zentralen Teil mit einer entsprechenden Buchse (9) zusammenwirkt, die einen inneren koaxialen Sitz mit aufnehmendem Zusammenpassen hat, der geeignet ist, mit einem entsprechenden vorstehenden Sitz zusammenzupassen, der an den Angeln der austauschbaren Schäfte (2) bereitgestellt ist, die in Längsrichtung in den Griff (1) eingesetzt werden können, wobei das Zusammenpassen zwischen den vorstehenden Sitzen der Angeln der Schäfte (2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8) und den aufnehmenden Sitzen (22) der inneren Buchsen (9) jedes vorkalibrierten Drehmomentmoduls (12, 13, 23), das in dem Griff (1) enthalten ist, ein Drehmoment erzeugt, welches der Summe der einzelnen Drehmomente der einzelnen Module entspricht, die an der Angel-Buchsen-Zusammenpassung (9) beteiligt sind.
  2. Ein vorkalibrierter manueller Drehmomentschraubendreher gemäß Anspruch 1, dadurch gekennzeichnet, dass jedes einzelne vorkalibrierte Drehmomentmodul (12, 13) aus einem ersten Hauptelement (13) und einem zweiten Element (12) besteht, die miteinander verriegelt werden können und einen einzigen Körper bilden, wobei das Hauptelement (13) wie ein zentral perforierter Zylinder geformt ist und eine Reihe von verlängerten Vertiefungen (15) hat, deren Anzahl vorzugsweise sechs beträgt, aber sie können jede beliebige geometrische Konfiguration haben, wobei die Vertiefungen (15) äquidistant, radial geneigt sind und auf einer Ebene liegen, die senkrecht zur Achse eines zentralen Lochs (17) ist, wobei das zweite Element (12) wie eine zentral perforierte Scheibe (17) geformt ist, wobei das zweite Element (12) an einer Seite davon flach ist und an der anderen Seite davon einen hohlen zentralen Raum (16) reproduziert, der geeignet ist, die innere Buchse (9) teilweise aufzunehmen und mit Vorsprüngen (18) des ersten Hauptelements (13) zusammenzupassen, wobei das zweite Element (12) wirkt, um das erste Element (13) zu bedecken und mit ihm zusammenzupassen, um ein individuelles vorkalibriertes Drehmomentmodul zu bilden, wobei sowohl das erste als auch das zweite Element (12, 13) einen oder mehrere durchgehende Hohlräume (14) oder Nuten haben, die in Längsrichtung an der äußeren Oberfläche verlaufen, um eine Arretierung (5) gegen Drehung um sich selbst zu bieten, sobald sie im Griff (1) positioniert sind.
  3. Ein vorkalibrierter manueller Drehmomentschraubendreher gemäß Anspruch 2, dadurch gekennzeichnet, dass jede Vertiefung (15) geeignet ist, eine elastische Schubfeder (11) aufzunehmen, eine Seite zur Außenseite hin in Endauflager für die Feder hat, während das andere Ende in einem senkrechten geschlitzten Sitz (19) endet, in dem eine zylindrische Walze (10) eingesetzt ist, welche frei ist, sich zu bewegen, zurückzuziehen und/oder teilweise in einen hohlen zentralen Teil des ersten Elements (13) hineinzuragen, wobei der zentrale freie Bereich ausgebildet ist, um eine innere Buchse (9) aufzunehmen, die am Drehen gehindert wird durch die Kraft, die von den elastischen Federn auf die zylindrischen Walzen (10) und entsprechend auf die länglichen Formen (20), die auf ihrer äußeren Oberfläche geformt sind, ausgeübt wird.
  4. Ein vorkalibrierter manueller Drehmomentschraubendreher gemäß Anspruch 3, dadurch gekennzeichnet, dass die Buchse (9) sich frei um sich selbst drehen kann, wenn sie einem Drehmoment, der auf den Griff (1) ausgeübt wird, ausgesetzt ist, das größer ist als dasjenige, das bestimmt wird durch die Summe der Kräfte der Federn durch den Hebelarm mit Bezug auf die zentrale Achse, wobei die Buchse (9) ein koaxiales Loch hat, das mit einem aufnehmenden passenden Sitz versehen sit, der ähnlich demjenigen ist, welcher an der Oberfläche der Angel des Schafts bereitgestellt ist (zum Beispiel: hexagonaler Sitz oder andere geometrische Konfiguration).
  5. Ein vorkalibrierter manueller Drehmomentschraubendreher gemäß Anspruch 1, dadurch gekennzeichnet, dass das einzelne vorkalibrierte Drehmomentmodul monolithisch geformt ist (23), mit einer zylindrischen Form und mit einem zentralen durchgehenden Loch begrenzter Dicke versehen, wobei das einzelne vorkalibrierte Drehmomentmodul schräge Löcher (24) an der seitlichen Oberfläche zum zentralen Teil hin in eine Richtung hat, die fast tangential zum zentralen leeren Teil ist, wobei die Löcher (24) auf einer Ebene angeordnet sind, welche senkrecht zur zentralen Achse des Zylinders ist.
  6. Ein vorkalibrierter manueller Drehmomentschraubendreher gemäß Anspruch 5, dadurch gekennzeichnet, dass die Löcher (24) in einem leicht geschlitzten Sitz (25) enden, der senkrecht zur Richtung der Löcher ist, wobei sich entlang der äußeren Oberfläche des Moduls mindestens drei in Längsrichtung halbkreisförmige äquidistante Hohlräume befinden, aber sie können in einer anderen Anzahl und einer anderen Form bereitgestellt werden, wobei die in Längsrichtung halbkreisförmigen äquidistanten Hohlräume ausgebildet sind, um das Modul am Griff zu verriegeln, wobei seine Drehung während des Schraubens oder Abschraubens verhindert wird, dadurch, dass
    zylindrische Walzen (10) in jeden geschlitzten Sitz (25) eingesetzt werden, während die elastischen Schubfedern (11) in die peripheren Löcher (24) eingesetzt werden und auf einer Seite in Kontakt mit den Walzen (10) und auf der anderen Seite in Kontakt mit einer kleinen Kugel (27) kommen, welche an der Mündung des äußeren Lochs angeordnet ist, wobei die Kugeln einfach die innere Oberfläche des Griffs (1) berühren und dazu dienen, die Federn (11) in der korrekten Position zu halten, und dadurch, dass
    der zentrale Teil des Drehmomentmoduls die Buchse (9) und eine dünne flache Unterlegscheibe mit einer Beabstandungsfunktion zwischen Seite an Seite liegenden Modulen und zwischen Seite an Seite liegenden Buchsen aufnimmt.
  7. Ein vorkalibrierter manueller Drehmomentschraubendreher gemäß einem oder mehreren der obigen Ansprüche, dadurch gekennzeichnet, dass vorkalibrierte Drehmomentmodule des monolithischen Typs (23) und/oder des modularen Typs (12, 13) in jeder beliebigen Kombination und Anordnung gleichermaßen in den Griff (1) eingesetzt werden können.
  8. Ein vorkalibrierter manueller Drehmomentschraubendreher gemäß einem oder mehreren der obigen Ansprüche, dadurch gekennzeichnet, dass die Schäfte (2), von austauschbarem Typ sind und in Längsrichtung in Bezug zum Griff von seinem vorderen Teil aus einsetzbar, verlängert sind und an einem Ende die Spitze des Schraubendrehers und am anderen Ende den Schaft mit vorstehenden passenden Sitzen haben, die geeignet sind, mit den aufnehmenden Sitzen (22) der Buchsen (9) zusammenzupassen, wobei die vorstehenden Sitze verschiedene Längen haben und verschieden kombiniert sind, um gleichzeitig ein oder mehrere vorkalibrierte Drehmomentmodule zu beeinflussen und so mit Bezug auf die Art von Schraube, die festgezogen oder gelöst werden soll, ein geeignetes Drehmoment zu bestimmen.
  9. Ein vorkalibrierter manueller Drehmomentschraubendreher gemäß einem oder mehreren der obigen Ansprüche, dadurch gekennzeichnet, dass die verschiedenen Arten von austauschbarem Schäften, die an den Griff des Schraubendrehers anpassbar sind, dieselbe Länge der Angel mit den entsprechenden vorstehenden passenden Sitzen haben, während die Längen des Teils, das aus dem Griff herausragt, variieren können.
  10. Ein vorkalibrierter manueller Drehmomentschraubendreher gemäß einem oder mehreren der obigen Ansprüche, dadurch gekennzeichnet, dass zur Verbesserung der Identifikation der verschiedenen Schäfte, die den Spitzen entsprechen, welche geeignet sind, an den Formen der Köpfe der festzuziehenden Schrauben zu arbeiten, die Stiele an der freiliegenden Oberfläche eine Kennzeichnung, wie zum Beispiel eine Farbe und / oder ein Symbol und / oder einen Code tragen, wobei dieselbe Kennzeichnung für die Schraubenköpfe oder an den Teilen in ihrer Nähe an den Maschinen oder am Einsatzhalter von Werkzeugen und so weiter verwendet werden kann.
  11. Ein vorkalibrierter manueller Drehmomentschraubendreher gemäß einem oder mehreren der obigen Ansprüche, dadurch gekennzeichnet, dass die Angeln der Schäfte (2) am Ende einen ausgehöhlten Sitz (4) haben, der geeignet ist, die Verriegelung des Stiels im Griff mit Hilfe einer Schnappvorrichtung zu ermöglichen, die aus einer Kugel (6) besteht, welche von einer elastischen Feder (7) und einer Stellschraube (8) in den Sitz gedrückt wird, wobei die Schnappvorrichtung, die am Schraubverschluss (1.2) angebracht und / oder fest mit dem Griff (1) verbunden ist, ausgebildet ist, um die zufällige Lösung des Schafts vom Griff zu verhindern.
  12. Ein vorkalibrierter manueller Drehmomentschraubendreher gemäß einem oder mehreren der obigen Ansprüche, dadurch gekennzeichnet, dass er besonders geeignet ist für Arbeiten für das sichere Anziehen von Schrauben für die Verriegelung von Einsätzen von Werkzeugen, die an Fräsen angebracht sind, oder geeignete Werkzeughalter auf dem Gebiet von Maschinen zur spanenden Bearbeitung und / oder in der Konstruktion von Ausrüstung oder Komponenten auf dem Gebiet der Luft- und/oder Raumfahrt und / oder auf gesundheitstechnischem Gebiet in der Befestigung von Prothesen.
  13. Ein vorkalibrierter manueller Drehmomentschraubendreher gemäß einem oder mehreren der obigen Ansprüche, dadurch gekennzeichnet, dass der Griff ausgebildet ist, um das Einsetzen verschiedener vorkalibrierter Drehmomentmodule (12, 13, 23) in jeder beliebigen Kombination und Anordnung, mit identischer oder unterschiedlicher individueller Kalibrierung, zu ermöglichen, um die gewünschten vorkalibrierten Drehmomente zu erhalten, die mit den verwendeten Schäften verknüpft werden können.
EP08759125A 2007-06-13 2008-06-09 Vorkalibrierter manueller drehmomentschraubendreher Active EP2155438B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITUD20070108 ITUD20070108A1 (it) 2007-06-13 2007-06-13 "caccavite torsiometrico manuale pretarato"
PCT/EP2008/004597 WO2008151769A1 (en) 2007-06-13 2008-06-09 Pre-calibrated manual torque screwdriver

Publications (2)

Publication Number Publication Date
EP2155438A1 EP2155438A1 (de) 2010-02-24
EP2155438B1 true EP2155438B1 (de) 2013-03-13

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EP (1) EP2155438B1 (de)
ES (1) ES2411060T3 (de)
IT (1) ITUD20070108A1 (de)
WO (1) WO2008151769A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023237409A1 (de) 2022-06-10 2023-12-14 Wera Werkzeuge Gmbh Schraubwerkzeug mit drehmomentbegrenzungseinrichtung
TWI844259B (zh) * 2023-02-08 2024-06-01 威進塑膠企業股份有限公司 扭力調整工具

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012102392A1 (de) * 2012-03-21 2013-09-26 Wera-Werk Hermann Werner Gmbh & Co. Kg Schraubwerkzeugsystem mit einer Mehrzahl von mit einer Drehmomentbegrenzungseinrichtung ausgestatteten Handgriffen und damit koppelbaren Schraubendrehereinsätzen
US10753719B2 (en) 2018-01-25 2020-08-25 Kennametal Inc. Adjustment device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10011506A1 (de) * 2000-03-09 2001-09-13 Adolf Wuerth Gmbh & Co Kg Werkzeug zum Übertragen eines Drehmomentes
ITUD20050050A1 (it) * 2005-04-05 2006-10-06 Amu S R L Impugnatura di cacciavite manuale con dispositivo torsiometrico pretarato idoneo per il serraggio di una serie di viti di varia grandezza

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023237409A1 (de) 2022-06-10 2023-12-14 Wera Werkzeuge Gmbh Schraubwerkzeug mit drehmomentbegrenzungseinrichtung
DE102022114689A1 (de) 2022-06-10 2023-12-21 Wera Werkzeuge Gmbh Schraubwerkzeug mit Drehmomentbegrenzungseinrichtung
TWI844259B (zh) * 2023-02-08 2024-06-01 威進塑膠企業股份有限公司 扭力調整工具

Also Published As

Publication number Publication date
ITUD20070108A1 (it) 2008-12-14
ES2411060T3 (es) 2013-07-04
WO2008151769A1 (en) 2008-12-18
EP2155438A1 (de) 2010-02-24

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