EP1422027A2 - Schraubwerkzeug, insbesondere Schraubendreher-Einsatz - Google Patents
Schraubwerkzeug, insbesondere Schraubendreher-Einsatz Download PDFInfo
- Publication number
- EP1422027A2 EP1422027A2 EP03028939A EP03028939A EP1422027A2 EP 1422027 A2 EP1422027 A2 EP 1422027A2 EP 03028939 A EP03028939 A EP 03028939A EP 03028939 A EP03028939 A EP 03028939A EP 1422027 A2 EP1422027 A2 EP 1422027A2
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- EP
- European Patent Office
- Prior art keywords
- tool according
- screwing tool
- front part
- surface portions
- length
- 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.)
- Granted
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B15/00—Screwdrivers
- B25B15/001—Screwdrivers characterised by material or shape of the tool bit
- B25B15/002—Screwdrivers characterised by material or shape of the tool bit characterised by material used or surface finishing
-
- 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
- B25B15/001—Screwdrivers characterised by material or shape of the tool bit
- B25B15/004—Screwdrivers characterised by material or shape of the tool bit characterised by cross-section
- B25B15/005—Screwdrivers characterised by material or shape of the tool bit characterised by cross-section with cross- or star-shaped cross-section
Definitions
- the invention relates to a screwing tool according to the preamble of the claim 1 specified genus.
- Screwing tools of this kind can especially for Phillips screws or TORX® screws, but also designed for screws with other internal profiles and implemented on screwdriver bits or on screwdriver blades be.
- PCT-WO 01/66312 A1 designed as a screwdriver insert screwing of this type (PCT-WO 01/66312 A1) consists of the front part of one by pressing or injection molding and subsequent sintering of cemented carbide bodies produced from metal powder, which is attached to a drive part made of steel.
- the length of the carbide front part is at most equal to 2.2 times the Length of penetrating section to be inserted into a screw.
- the profile section of the front part has a relatively short Length.
- the grooves of the penetration section go over a radially outwardly curved Outlet or transition section in a base section over, with the Drive part of the screwdriver bit is connected.
- the aim is, the Length of the penetration section and also the length of the front part as far as possible short to form a high when pressing the blank from metal powder Compaction and a homogeneous structure up to the top of the profile section and to reach its profile webs.
- the surface of the blank becomes small be held so that the frictional resistance during ejection from the molding die is small and the formation of hairline cracks is avoided, which can occur when the ejector pressure acting on the blank becomes too high, and the load capacity of the Reduce front part made of hard metal. Nevertheless, the reproducibility such inserts not yet fully satisfactory.
- a screwdriver insert is known (FR 2 469 250 A), in which a Base portion has a right angle to the longitudinal axis extending end face of which projects from a conical, cross-shaped profile section.
- the transitions from the profile section in the base section are largely sharp-edged and have no defined radii, but only radii on, as they usually result of pressing the profile tip in a mold.
- the invention is based on the object, the erwerkzug the beginning designated genus in such a way that, despite its production of metal powder and even with a comparatively short length its profile section a high breakage and torsional strength is achieved.
- the invention has the advantage that a high breaking and torsional strength is achieved and the metal screwing tools are produced reproducible can, as both the grooved bottoms and the flanks of the crossbars means curved trained transition surfaces in the end face of the base portion leak.
- edged crossing points in these areas seem to lead due to the brittleness of the materials used under load to voltage spikes, which lead to breakage of the tread peak at load values, which below the values required by the standards and in practice.
- the invention is particularly in screwdriver bits with a cross point as with the Phillips® or Pozidriv® system.
- an inventive screwing in the form of a Screwdriver insert of an elongated, one-piece body 1 the one end has a drive part 2 with a polygonal profile 3, which in a corresponding receptacle or in a feed of a rotary tool, for. B. a motor wrench, can be used.
- a front end of the drive part 2 enters profiled front part 4 of the screwing over.
- the front part 4 contains one the driving part 2 attaching, shaft-shaped base portion 5, the cylindrical here is trained.
- Profile section 6, which like the base section 5 and the drive part 2 coaxial with a common longitudinal axis 7 is.
- the profile section 6 contains at a front end of a conventional conical cross point with four cross-shaped webs 8, which are radial to the longitudinal axis 7.
- the Outside edges of the webs 8 converge toward a tip 9.
- the back ends the webs 8 go over into the front side of the base portion 5.
- Webs 8 are V-shaped recesses or grooves 10 with groove bottoms 11th (Fig. 3), which in an adjacent to the tip 9 penetrating portion 12, the Penetration of the cross point in the corresponding Phillips profile of an associated Screw is used, are rectilinear.
- the groove bottoms 11 z. B. as in the system Phillips® have a triangular cross-section or are concave roof-shaped and have a linear ridge line, such as Figs. 2 and 4 show.
- the transition section 14 (FIGS. 1 and 3).
- the Nutenböden 11 with longitudinal and transverse curved Transition surfaces 15 radially outward to the peripheral surface of the base portion 5 off.
- the transition surfaces 15 go outward towards in each case a surface portion 16 on, in particular curved transversely according to FIG is trained.
- the corresponding surface portions 16 of all four grooves 10 form at the same time between the webs 8 remaining parts of an end face of the adjacent base portion 5, each by the adjoining base surfaces the webs 8 is interrupted. As shown in FIG.
- Fig. 3 shows that the groove bottoms 11 by means of the transition surfaces 15 steadily pass into the surface sections 16.
- the transition surfaces 15 are preferably curved with radii of 0.15 mm to 2.0 mm, wherein radii of curvature from 0.5 mm to 1.5 mm are preferred.
- the radius of curvature is Of course, depending on the sizes of the profile tips, by standards specified and with screwdrivers for Phillips screws in the sizes 00 to 4 are divided, to choose different sizes or to the profile tips adapt. The same applies to screwing tools for the TORX® system.
- transition surfaces 15 and to them subsequent surface portions 16 until reaching the lateral surface of the base portion 5 radially continuous curved form (eg PCT-WO 01/66312 A1), consistently using the same but also different radii of curvature can be, the z. B. in the region of the transition surfaces 15 smaller than in the area the surface portions 16 are.
- the surface portions 16 are in the lateral direction and on both Side by second transition surfaces 17a, 17b with the rear ends laterally Flanks 8a of the respective adjacent webs 8 connected.
- the second transitional surfaces 17a, 17b have in the transverse direction, starting from the flanks 8a, preferably Radii of curvature from 0.15 mm to 2.0 mm, with particular advantage of 0.4 mm 1.5 mm.
- the radii of curvature expediently increase from a Groove plates 11 near point radially outward to the circumferential surface of the base portion 5 out steadily, so that a total of a three-dimensional curved spout is formed.
- FIG. 2 z. B.
- transitional surfaces 17a, 17b are, as indicated in Fig. 2, in the transverse direction with curved a uniform radius. The respective radius can then also from the first transition surface 15 to be equal to the outside.
- the radii of curvature of the transition surfaces 17a, 17b may be in the transverse direction but also change. This is indicated in the embodiment of FIG. 4, characterized that the transition surfaces 17a, 17b of partial surfaces 17a1, 17a2 and 17b1, 17b2 are composed, wherein the Generalf kauen 17a1, 17b1 at the web flanks 8a begin and larger radii of curvature than the adjoining partial surfaces 17a2, 17b2, the here to a flat surface portion 16 'shown out leak. Otherwise, the embodiment of FIG. 4 corresponds to that of FIG. 1 to 3, which is why the same parts are provided with the same reference numerals.
- the groove bottoms 11 shown rounded in FIGS. 1 to 3 can also be shaped differently be. Instead of a roof-shaped cross-section could other and in particular Such cross sections may be provided, as in the case of screws of the different systems are common.
- the length dimensions of the various parts or sections preferably correspond essentially those known from document PCT-WO 01/66312 A1.
- the ratios of the lengths LP of the profile sections 6 to the lengths L0 the penetration portions 12 are preferably smaller than 1.5 and preferably 1.25 to 1.85.
- z. B the length L0 of the penetration section 12 between 1.50 mm and 4.00 mm depending on size and screw system.
- the diameter d0 (FIGS. 1 and 3) of the penetrating portion 12 is L0 at a distance from the top 9 between 2.3 mm and 8.0 mm.
- the measure L0 is in the context of the present application at least equal to greatest depth of the inner profile in a screw head certain profile size, z. B. Pozidriv® 2. Conveniently, a measure is chosen for L0, which results from the greatest penetration depth plus a small surcharge results.
- the measure LP is in Within the scope of the present application, the measure of the tip 9 of the front part 4 to to the outlet of the transition section 14 in the base section 5, wherein as a limit This outlet the Verschneidungsline the surface portions 16 with the peripheral surface of the base section 5 is defined.
- Both dimensions are from the top 9 of the Front part 4 measured starting, from the edge, where a possible flat-cone-shaped tip surface merges into the lateral profile contour, or of the top surface itself, if it represents a plane that is perpendicular to Longitudinal axis 7 of the front part 4 is.
- the base portion 5 may be a cylindrical, have hexagonal or otherwise shaped cross-sectional contour.
- transition section 14 By the specified shape of the transition section 14 between the Penetration section 12 and base section 5, d. H. the combination of small radii and curved surfaces, a good power flow is achieved and thereby the breaking strength further increased at torsional load on the tip.
- Fig. 5 and 6 relate to an embodiment of a screwing tool in shape a screwdriver insert for the Pozidriv® system.
- This is different from the specific embodiments of the Phillips® system according to FIGS. 1 to 4 on the one hand by webs 19 with almost plane-parallel arranged flanks 19a, while the flanks 8a of the webs 8 as shown in FIG. 4 slightly wedge-shaped apart.
- the area sections 16 can also be used in their more central areas each a comb-like, radially extending elevation 23 may be provided, as shown in FIG. 5 shows.
- FIG. 5 shows.
- FIGS. 7 to 9 show by analogy with FIGS. 1 to 6 an inventive screwing tool in the form of a screwdriver insert suitable for the TORX® system.
- the screwing tool includes an only partially illustrated front part 26 with a Base section 27 and an adjoining profile section of length LP, the a penetration portion 29 of length L0 and a transition portion 30th is composed.
- Webs 31 and grooves 32 have at the beginning a wavy, Characteristic for the TORX® system.
- the grooves 32 have in the penetration section 29 parallel to a longitudinal axis 33 extending floors 34 with rectilinear Center lines 35.
- Figs. 11 and 12 show an embodiment substantially corresponding to Figs. 1 to 4, which is why the same parts are again provided with the same reference numerals.
- the lengths L0 determined according to the maximum penetration depths T (FIG. 11) in corresponding inner profiles 40 of screw heads 41 of assigned sizes and types, are approximately 5% to 20% in comparison to the usual one, according to FIGS shortened screwdriver inserts are shortened.
- the portion 42 of the penetrating portion 12 due to the shortening is indicated by dotted lines.
- An advantageous range of the cut K is between 7% and 12% of the length L0.
- a reduction of 10% results in the following measures L0K for the shortened length:
- the initial length L0 of the penetration section 12 is chosen about 3 to 5% longer than the respective maximum penetration depth T.
- the profile contour outside the screw head 41 will continue somewhat.
- the profile contour itself is determined by the ISO and works standards, starting from the Profile top, set.
- the shortening of the dimensions L0 and L0K naturally also has one corresponding shortening of the dimensions LP to LPK result, whereby the contours of the Transition surfaces 15 and surface portions 16 as in unabridged L0 unchanged even with a shortened L0K remain.
- the shortening of the penetration section 12 by the dimension K has an advantageous effect because of the shape of cemented carbide powder (eg according to PCT-WO 01/66312 A1), in particular in applications with cross-slot profiles.
- This measure has, on the one hand, the consequence that, as the front part 4 is axially ejected from the forming die, the friction due to the smaller total surface area decreases.
- the shortening at the tip of the penetration section 12 - at least in the case of conical cross tips - leads to an enlargement of the cross-sectional area of a tip 43, thus to a lower surface pressure during ejection and thereby to a reduction in the risk of the formation of hairline cracks.
- the ratio of the length LPK of the shortened profile section to the length L0 of correspondingly shortened penetration portion 12 is in this embodiment 1.20 to 1.90 and is preferably greater than 1.5.
- either roundings 45 or bevels 46 are provided at the radial outer edges of the webs 8 otherwise formed as in FIG.
- the radius r of the rounding is about 10% to 12% of the thickness b of the webs 8.
- the thickness b is constant in the system Pozidriv® over the length L0 of the profile, which is why the radius of the fillets 45 can be selected substantially constant.
- the thickness b increases from the tip 9 towards the transition surface 15, and therefore, the radius r can increase slightly from the tip to the transition surface 15. But it can also be constant and be chosen according to a mean thickness of the webs 8 on their longitudinal extent.
- the width a of the bevels 46 is preferably selected in a ratio of 6% to 10% to the thickness b of the webs 8.
- FIG. 13 shows such a variant on the basis of an embodiment corresponding to FIG Area of the profile tip enlarged screwing shown, in the same Parts are provided with the same reference numerals as in Fig. 1.
- Fig. 13 the front part 4 of the screwdriver bit with a profile tip of the Pozidriv® system.
- the side edges run 8a the webs 8 on its longitudinal extent substantially parallel.
- each is a flank of the four cross-shaped webs 8 slightly beveled in the front area.
- the angle of a demolding slope formed thereby is between 1 ° and 5 ° with respect to a radial plane, the longitudinal axis 7 and an imaginary center plane of the Includes webs 8.
- the attachment of the Entformungsschräge forming chamfer 47 on that flank, which when turning is loaded by screws and is designated 8b in Fig.
- expiring surface portions 16 each have a preferably saddle-shaped (concave) recess 49 is attached.
- Such recesses 49 are shown in FIG. 14 and 15 shown schematically, which otherwise correspond to FIGS. 2 and 3.
- the Recesses 49 can also be incorporated as a flat, in the surface portions 16 Be realized surfaces. Through these recesses 49 in particular the funnel-like Shape of the cut core (Fig.15) improved. As a comparison of Fig. 15 with the Fig.
- FIG. 3 shows, in which the surface portion 16 with a small Angle extends substantially radially, namely the filling of the profile tip during deformation of the blank by pressing or injection molding favors because of Mass flow is better conducted into the profile pockets in the die.
- the surfaces 49 are even better detect. Their concave curvature in the circumferential direction also redirects the mass flow the side to the profile pockets in the die.
- second transition surfaces 17a, 17b are acting on the webs 8 torsional forces in the Base section 5 passed. However, the effect of the second transition surfaces should be 17a, 17b, the radii of the Nutenböden 11 to the outside larger will not be disturbed.
- the recesses 49 are useful only in arranged radially outer region and in the circumferential direction only via such Area extends that they end laterally in front of the second transitional surfaces 17 a, 17 b. This preserves the arched transitional zones formed by them, by means of which the stresses occurring under load of the webs 8 are kept small become. Overall, can be with the recesses 49 a very dense, homogeneous Filling the pockets of the mold when pressing or injection molding of the blanks to reach.
- the angle that the recesses or surfaces 49 with the longitudinal axis 7 in a include and containing by the surface 49 set radial planes should significantly smaller than the angle ⁇ (Fig. 15) and is suitably smaller than 85 °.
- Fig. 15 shows that the measure LP by the training the recess 49 is increased, so that the ratio LP to LO in the presence the recesses 49 larger than in the absence of these recesses 49 fails. In particular, in this embodiment, therefore, with conditions LP / L0> 1.5 achieved good results.
- the inventive design of the profile section 6 and 29, 30 brings advantages not only for front parts of hard metal, preformed by pressing from metal powder but also for those which are preformed by injection molding. This also applies to screwdriver inserts, in which the front part 4, 26 part a one-piece body, the blank preferably by injection molding is preformed. In addition, this also applies accordingly to carbide made, the profile sections 6 and 29, 30 according to the invention having front parts, the their backs, z. B. by means of suitable anchoring elements, to the rest steel shafts of the blades fastened by hand screwdrivers become.
- the invention is not limited to the described embodiments, which can be modified in many ways.
- the radii of curvature of the Transition surfaces also be substantially the same.
- the expiring surface portions 16, 37 in a perpendicular to the longitudinal axis 7, 33 extending plane to lay, especially when the Radii for the transitional surfaces 17a, 17b are sized so large that alone by they are given sufficiently low voltages in the transition areas.
- the transition surfaces 17 a, 17 b and / or the surface portions 16, 37 also in the circumferential direction or in the radial direction next to each other, be composed of different radii of curvature surfaces. The same applies to the first transition surfaces 15 and 36.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
- Connection Of Plates (AREA)
- Workshop Equipment, Work Benches, Supports, Or Storage Means (AREA)
- Powder Metallurgy (AREA)
- Dowels (AREA)
Abstract
Description
Claims (32)
- Schraubwerkzeug mit einem durch Formung und nachfolgendes Sintern eines Metallpulvers hergestellten, profilierten Vorderteil (4, 26), das einen eine Stirnfläche aufweisenden Basisabschnitt (5, 27) und einen Profilabschnitt aufweist, der einen Eindringabschnitt (12, 29) und einen zwischen diesem und dem Basisabschnitt (5, 27) angeordneten Übergangsabschnitt (14, 30) aufweist, wobei der Eindringabschnitt (12, 29) mit seitlichen Flanken (8a, 19a) versehene Stege (8, 19, 31) und zwischen diesen angeordnete, mit geradlinigen Böden (11, 20, 34) versehene Nuten (10, 21, 32) und der Übergangsabschnitt (14, 30) radial auslaufende, die Stirnfläche des Basisabschnitts (5, 27) bildende Flächenabschnitte (16, 16', 24, 37) sowie erste, gewölbt ausgebildete Übergangsflächen (15, 36) aufweist, die die Nutenböden (11, 20, 34) in radialer Richtung mit den Flächenabschnitten (16, 16', 24, 37) verbinden, dadurch gekennzeichnet, daß der Übergangsabschnitt (14, 30) zweite, ebenfalls gewölbt ausgebildete Übergangsflächen (17a, 17b) enthält, die die Flächenabschnitte (16, 16', 24, 37) in seitlicher Richtung mit den Stegflanken (8a, 19a) verbinden.
- Schraubwerkzeug nach Anspruch 1, dadurch gekennzeichnet, daß die zweiten Übergangsflächen (17a, 17b) tangential in die Stegflanken (8a, 19a) münden.
- Schraubwerkzeug nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die ersten und zweiten Übergangsflächen ( 15, 36; 17a, 17b) mit Radien von 0,15 mm bis 2,0 mm gekrümmt sind.
- Schraubwerkzeug nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Übergangsflächen (15, 36; 17a, 17b) durch radial oder seitlich nebeneinander liegende, unterschiedliche Krümmungsradien aufweisende Teilflächen (17a1, 17a2; 17b1, 17b2) gebildet sind.
- Schraubwerkzeug nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Flächenabschnitte (16, 16', 24, 37) radial bis an einen Umfangsmantel des Basisabschnitts (5, 27) heranreichen.
- Schraubwerkzeug nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Flächenabschnitte (16, 24, 37) in seitlicher Richtung räumlich gewölbt sind, wobei die Wölbungsradien von den ersten Übergangsflächen (15) aus zum Umfangsmantel des Basisabschnitts (5) hin größer werden.
- Schraubwerkzeug nach Anspruch 6, dadurch gekennzeichnet, daß die Flächenabschnitte (24) eine durch die Wölbung gebildete, tiefste Zone mit einer Scheitellinie aufweisen, die sich in radialer Richtung an die betreffende erste Übergangsfläche (15) anschließt und im wesentlichen in einer Radialebene verläuft, die eine Längsachse (7) des Vorderteils (14) und eine Mittelachse des zugehörigen Nutenbodens (11) einschließt.
- Schraubwerkzeug nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Flächenabschnitte (16') eben ausgebildet sind.
- Schraubwerkzeug nach einem der Ansprüch 1 bis 5, dadurch gekennzeichnet, daß die Flächenabschnitte (16, 16', 37) zu einer Längsachse (7, 33) des Vorderteils (4, 26) geneigt verlaufen.
- Schraubwerkzeug nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß die Flächenabschnitte durch kammartige Erhebungen (23) unterbrochen sind, deren Rücken in einer die Längsachse (7) des Vorderteils (4) einschließenden Radialebene verlaufen.
- Schraubwerkzeug nach Anspruch 9 oder 10, dadurch gekennzeichnet, daß wenigstens einer der Flächenabschnitte (16, 16', 24, 37) einen Winkel von 75° bis 90° mit der Längsachse (7, 33) des Vorderteils (4, 26) einschließt.
- Schraubwerkzeug nach einem der Ansprüche 4 bis 11, dadurch gekennzeichnet, daß wenigsten einer der Flächenabschnitte (16) eine Ausnehmung (49) aufweist, die in einer radial außen liegenden Zone des Flächenabschnitts (16) angeordnet und bis zu einem Umfangsmantel des Basisabschnitts (5, 27) erstreckt ist.
- Schraubwerkzeug nach Anspruch 12, dadurch gekennzeichnet, daß die Ausnehmung (49) sattelförmig ausgebildet ist.
- Schraubwerkzeug nach einem der Ansprüche 12 oder 13, dadurch gekennzeichnet, daß die Ausnehmung (49) einen Winkel von weniger als 85° mit der Längsachse (7) des Vorderteils (14) bildet.
- Schraubwerkzeug nach einem der Ansprüche 12 bis 14, dadurch gekennzeichnet, daß die Ausnehmung (49) in seitlicher Richtung schmaler als der Flächenabschnitt (16) ist.
- Schraubwerkzeug nach einem der Ansprüche 1 bis 15, dadurch gekennzeichnet, daß die Stege (8) mit in einer quer zur Längsachse (7) des Vorderteils (4) verlaufenden Richtung abgeschrägten oder abgerundeten Außenkanten (45, 46) versehen sind.
- Schraubwerkzeug nach einem der Ansprüche 1 bis 15, dadurch gekennzeichnet, daß die Flanken (8a) der Stege (8) zumindest an ihren Vorderseiten mit Entformungsschrägen versehen sind.
- Schraubwerkzeug nach Anspruch 17, dadurch gekennzeichnet, daß die Entformungsschrägen durch Flächen (47) gebildet sind, die mit zugehörigen, durch die Längsachse (7) des Vorderteils (4) gelegten Mittelebenen der Stege (8) Winkel von 1° bis 5° einschließen.
- Schraubwerkzeug nach Anspruch 17 oder 18, dadurch gekennzeichnet, daß die Einführungsschrägen an denjenigen Flanken (8b) der Stege (8) vorgesehen sind, die beim Ausdrehen einer Schraube belastet werden.
- Schraubwerkzeug nach Anspruch 18 oder 19, dadurch gekennzeichnet, daß die Flächen (47) über die ganze Länge der Flanken (8b) erstreckt sind.
- Schraubwerkzeug nach einem der Ansprüche 1 bis 20, dadurch gekennzeichnet, daß das Verhältnis der Länge (LP) des Profilabschnitts (6) zur Länge (L0) des Eindringabschnitts (19, 29) 1,25 bis 1,85 beträgt.
- Schraubwerkzeug nach einem der Ansprüche 12 bis 15 und 21, dadurch gekennzeichnet, daß das Verhältnis der Länge (LPK) des Profilabschnitts (6) zur Länge (LOK) des Eindringabschnitts (12) größer als 1,5 ist.
- Schraubwerkzeug nach einem der Ansprüche 1 bis 22, dadurch gekennzeichnet, daß die Länge des Eindringabschnitts (12) um bis zu 25 % kürzer als die maximale Eindringtiefe (T) des Innenprofils (40) zugeordneter Schrauben ist.
- Schraubwerkzeug nach Anspruch 23, dadurch gekennzeichnet, daß die Kürzung zwischen 5 % und 20 % der Länge des Eindringabschnitts (12) beträgt.
- Schraubwerkzeug nach einem der Ansprüche 23 oder 24, dadurch gekennzeichnet, daß das Verhältnis der Länge (LP) des Profilabschnitts zur Länge (LO) des Eindringabschnitts (12) 1,20 bis 1,90 beträgt.
- Schraubwerkzeug nach einem der Ansprüche 1 bis 25, dadurch gekennzeichnet, daß es als Schraubendreher-Einsatz (1) ausgebildet ist.
- Schraubwerkzeug nach Anspruch 26, dadurch gekennzeichnet, daß das Basisteil (5, 27) auf der vom Vorderteil (4, 26) abgewandten Seite mit einem Antriebsteil (2) fest verbunden ist.
- Schraubwerkzeug nach einem der Ansprüche 1 bis 25, dadurch gekennzeichnet, daß es als Schraubendreher-Klinge ausgebildet ist.
- Schraubwerkzeug nach Anspruch 28, dadurch gekennzeichnet, daß Basisteil (5, 27) auf der vom Vorderteil (4, 26) abgewandeten Seite mit einem Schaft eines Schraubendrehers fest verbunden ist.
- Schraubwerkzeug nach einem der Ansprüche 1 bis 29, dadurch gekennzeichnet, daß die zweiten Übergangsflächen (17a, 17b) in Querrichtung und in ihrem radialen Verlauf mit gleichen Radien gewölbt bzw. gekrümmt sind.
- Schraubwerkzeug nach einem der Ansprüche 1 bis 30, dadurch gekennzeichnet, daß das Vorderteil (4, 26) durch Pressen oder Spritzgießen geformt ist.
- Vorderteil für ein Schraubwerkzeug, insbesondere einen Schraubendreher-Einsatz oder eine Schraubendreher-Klinge, dadurch gekennzeichnet, daß es nach wenigstens einem der Ansprüche 1 bis 31 ausgebildet ist.
Applications Claiming Priority (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE20218102U | 2002-11-22 | ||
DE20218102U DE20218102U1 (de) | 2002-11-22 | 2002-11-22 | Schraubendreher-Einsatz |
DE20304246U | 2003-03-14 | ||
DE20304246U DE20304246U1 (de) | 2003-03-14 | 2003-03-14 | Schraubendreher-Einsatz |
DE20309294 | 2003-06-13 | ||
DE20309294U | 2003-06-13 | ||
DE20310364U DE20310364U1 (de) | 2003-06-13 | 2003-07-05 | Profilabschnitt für Schraubendreher |
DE20310364U | 2003-07-05 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1422027A2 true EP1422027A2 (de) | 2004-05-26 |
EP1422027A3 EP1422027A3 (de) | 2005-08-24 |
EP1422027B1 EP1422027B1 (de) | 2007-07-18 |
Family
ID=32234253
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03028939A Expired - Lifetime EP1422027B1 (de) | 2002-11-22 | 2003-11-24 | Schraubwerkzeug, insbesondere Schraubendreher-Einsatz |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1422027B1 (de) |
AT (1) | ATE367243T1 (de) |
DE (1) | DE50307690D1 (de) |
ES (1) | ES2291587T3 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010023139A (ja) * | 2008-07-16 | 2010-02-04 | Vessel Industrial Co Ltd | ねじ回し工具 |
TWI474895B (de) * | 2013-09-06 | 2015-03-01 | ||
USD855433S1 (en) | 2017-08-09 | 2019-08-06 | Milwaukee Electric Tool Corporation | Screwdriver |
US11059162B2 (en) | 2017-05-17 | 2021-07-13 | Milwaukee Electric Tool Corporation | Screwdriver |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI784842B (zh) * | 2021-12-15 | 2022-11-21 | 洪昭敏 | 起子頭結構 |
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US2046837A (en) * | 1934-07-03 | 1936-07-07 | Phillips Screw Co | Means for uniting a screw with a driver |
DE959360C (de) * | 1943-01-19 | 1957-03-07 | Guest Keen & Nettlefolds Midla | Schraubenzieher |
US3393722A (en) * | 1966-07-19 | 1968-07-23 | George W. Windham | Bit end of tool |
US5461952A (en) * | 1992-05-14 | 1995-10-31 | Textron Inc. | Back-side taper wedging drive system |
DE29621782U1 (de) * | 1996-12-16 | 1998-04-09 | Wera-Werk Hermann Werner Gmbh & Co, 42349 Wuppertal | Schraubendrehereinsatz |
EP0947716A2 (de) * | 1998-04-03 | 1999-10-06 | Fairchild Holding Corp. | Befestigungssystem mit Kreuz-Schlitz-Aufnahme und Kreuz-Schlitz-Einsatz |
DE19923855A1 (de) * | 1999-05-25 | 2001-01-04 | Werner Hermann Wera Werke | Sicherheitsschraube und zugehöriges Schraubwerkzeug |
US6223634B1 (en) * | 1997-10-03 | 2001-05-01 | Phillips Screw Company | Recessed head fastener and driver systems |
WO2001066312A1 (de) * | 2000-03-06 | 2001-09-13 | Felo-Werkzeugfabrik Holland-Letz Gmbh | Schraubendreher-einsätze |
-
2003
- 2003-11-24 ES ES03028939T patent/ES2291587T3/es not_active Expired - Lifetime
- 2003-11-24 DE DE50307690T patent/DE50307690D1/de not_active Expired - Lifetime
- 2003-11-24 AT AT03028939T patent/ATE367243T1/de active
- 2003-11-24 EP EP03028939A patent/EP1422027B1/de not_active Expired - Lifetime
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2046837A (en) * | 1934-07-03 | 1936-07-07 | Phillips Screw Co | Means for uniting a screw with a driver |
DE959360C (de) * | 1943-01-19 | 1957-03-07 | Guest Keen & Nettlefolds Midla | Schraubenzieher |
US3393722A (en) * | 1966-07-19 | 1968-07-23 | George W. Windham | Bit end of tool |
US5461952A (en) * | 1992-05-14 | 1995-10-31 | Textron Inc. | Back-side taper wedging drive system |
DE29621782U1 (de) * | 1996-12-16 | 1998-04-09 | Wera-Werk Hermann Werner Gmbh & Co, 42349 Wuppertal | Schraubendrehereinsatz |
US6223634B1 (en) * | 1997-10-03 | 2001-05-01 | Phillips Screw Company | Recessed head fastener and driver systems |
EP0947716A2 (de) * | 1998-04-03 | 1999-10-06 | Fairchild Holding Corp. | Befestigungssystem mit Kreuz-Schlitz-Aufnahme und Kreuz-Schlitz-Einsatz |
DE19923855A1 (de) * | 1999-05-25 | 2001-01-04 | Werner Hermann Wera Werke | Sicherheitsschraube und zugehöriges Schraubwerkzeug |
WO2001066312A1 (de) * | 2000-03-06 | 2001-09-13 | Felo-Werkzeugfabrik Holland-Letz Gmbh | Schraubendreher-einsätze |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010023139A (ja) * | 2008-07-16 | 2010-02-04 | Vessel Industrial Co Ltd | ねじ回し工具 |
TWI474895B (de) * | 2013-09-06 | 2015-03-01 | ||
US11059162B2 (en) | 2017-05-17 | 2021-07-13 | Milwaukee Electric Tool Corporation | Screwdriver |
US11717951B2 (en) | 2017-05-17 | 2023-08-08 | Milwaukee Electric Tool Corporation | Screwdriver |
USD855433S1 (en) | 2017-08-09 | 2019-08-06 | Milwaukee Electric Tool Corporation | Screwdriver |
USD911140S1 (en) | 2017-08-09 | 2021-02-23 | Milwaukee Electric Tool Corporation | Screwdriver |
Also Published As
Publication number | Publication date |
---|---|
ATE367243T1 (de) | 2007-08-15 |
DE50307690D1 (de) | 2007-08-30 |
ES2291587T3 (es) | 2008-03-01 |
EP1422027B1 (de) | 2007-07-18 |
EP1422027A3 (de) | 2005-08-24 |
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