EP1858670B1 - Dispositif de transmission de couple de rotation a siege de serrage entre une partie menante et une partie menee, en particulier outil de vissage - Google Patents

Dispositif de transmission de couple de rotation a siege de serrage entre une partie menante et une partie menee, en particulier outil de vissage Download PDF

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Publication number
EP1858670B1
EP1858670B1 EP06708629.8A EP06708629A EP1858670B1 EP 1858670 B1 EP1858670 B1 EP 1858670B1 EP 06708629 A EP06708629 A EP 06708629A EP 1858670 B1 EP1858670 B1 EP 1858670B1
Authority
EP
European Patent Office
Prior art keywords
profile portion
angle
insertion opening
torque transmission
wall portions
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
EP06708629.8A
Other languages
German (de)
English (en)
Other versions
EP1858670A1 (fr
Inventor
Krzysztof Furgal
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.)
Wera Werk Hermann Werner GmbH and Co KG
Original Assignee
Wera Werk Hermann Werner GmbH and Co KG
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
Application filed by Wera Werk Hermann Werner GmbH and Co KG filed Critical Wera Werk Hermann Werner GmbH and Co KG
Publication of EP1858670A1 publication Critical patent/EP1858670A1/fr
Application granted granted Critical
Publication of EP1858670B1 publication Critical patent/EP1858670B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B25B23/02—Arrangements for handling screws or nuts
    • B25B23/08—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation
    • B25B23/10—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means
    • B25B23/105—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means the gripping device being an integral part of the driving bit
    • B25B23/108—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means the gripping device being an integral part of the driving bit the driving bit being a Philips type bit, an Allen type bit or a socket
    • 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 having a drive part whose profile section engages positively in a substantially cylindrical insertion opening of a screw head.
  • the US 4,269,246 describes a generic screwing, in which the profile section inserted in an insertion of a head of a screw.
  • the cross-section of the insertion opening consists of six equally distributed in the circumferential direction and identically shaped, concave rounded edge portions having portions that pass without kinks in convex rounded edge portions.
  • the cross-sectional profile of the profile section is the same design, however, the apex lines of the ribs extend at an acute angle to each other.
  • the US 6,626,911 B1 describes a screwing tool in which a profile section of a drive part engages positively in an insertion opening of a driven part.
  • the profile section has grooves flanked by ribs, the groove bottoms extending over portions of an outer cylindrical surface.
  • the DE 101 07 751 A1 describes a screwing tool with a profile section having ribs and grooves extending between the ribs.
  • the groove bottoms and the apex surfaces of the ribs run here on frustoconical surfaces.
  • the US Pat. No. 6,419,489 B1 describes a torque transmission device in which a profile section engages positively in a substantially cylindrical insertion opening.
  • the cross-section of the insertion has six identically shaped, convexly rounded edge portions. By forming a kink, these edge portions go in to the center of the insertion centered circular arc sections over. Circular arc sections and convexly rounded edge sections alternate.
  • the profile section has grooves with rounded bottoms, wherein the baselines of the floors are parallel to each other. By forming crease lines, the rounded bottoms merge into fins whose outwardly facing portions lie on truncated cone surface portions.
  • the EP 0 985 498 A1 describes a profile section of a screwing tool, in which concave rounded profile sections merge into convexly rounded profile sections.
  • the profile section has a cylindrical shape.
  • the DE 20218102 U1 describes screwdriver bits with a Phillips profile and with a Torx profile.
  • the cross-slot profile has four V-shaped recesses with a longitudinal groove base.
  • the grooves rounded in the bottom region merge, forming a crease line, into outwardly facing circumferential sections of the ribs which run on a truncated cone lateral surface with a cone angle of 25 degrees.
  • the baselines of the grooves extend at an angle of about 7 degrees inclined to the profile central axis.
  • the crease lines, which define the width of the rib run parallel to one another.
  • the profile section of a Torx screwdriver bit has a cylindrical shape and circumferentially alternating rounded grooves and rounded ribs.
  • Tix wedge is a torque transmission device in which the output parts of screw heads are formed.
  • the insertion openings in the screw heads have the shape of a hexagram, wherein the corners of the hexagram are rounded in such a way that concave and convex rounding sections of the cross section alternate with one another.
  • the opening is designed substantially cylindrical, ie the walls of the Openings run without appreciable rejuvenation. Since the er schmaschinectioneintrittsö Maschinen devisen are usually embossed, they run slightly conical to form Entformungsschrägen.
  • the drive part is the blade of a screwdriver or a bit.
  • the profile section has ribs and grooves which alternately extend in the axial direction and are adapted to the dimensions of the rounded sections of the insertion opening.
  • the apex lines of ribs and the baselines of the grooves are at an angle to the axis of the profile section, which is between 21 ⁇ 2 degrees and 31 ⁇ 2 degrees.
  • the invention has the object of developing a torque transmission device to the effect that the output member and the drive member hold each other in a clamping fit.
  • a trained according to the invention profile section of a screwing can be inserted into the insertion of a Torx screw.
  • the screw holds in the press fit on the screw, so that the screw can be easily rotated. There are no additional holding means required to screw the screw into the associated threaded opening.
  • radially outwardly facing portions of the rib on a conical surface extend around the axis of the profile section and pass over these conical-lack surface sections of the ribs to form a curvature in the rounded bottoms of the grooves.
  • the grooves form rounded bottoms, which run in particular on circular arc lines.
  • the ribs go into the rounded one, forming a crease line Grooves over, wherein the apex lines of the ribs in the middle of the ribs extend from tapered to the top of the profile conical surface portions.
  • the angles of the baselines and the angle of the apex lines are different in each case to the axis of the profile section.
  • the angles of the baseline to the profile section are in the range between 1.5 and 3 degrees.
  • the angular amount depends to a considerable extent on the diameter of the profile section.
  • the angle is between 2.5 and 3 degrees.
  • the angle is 1.5 degrees.
  • larger angles are used again.
  • the angles of the apex lines of the ribs to the axis of the profile section vary with its diameter. The angle is determined before the grooves are incorporated by pre-turning the blanks.
  • the pre-rotation angle is preferably 2.5 degrees. For larger diameters of the profile sections, however, this angle can also be 5.5 degrees.
  • the angles are preferably selected so that the circumferential direction measured width of the limited by the crease lines conical surface sections from the end of the profile section increases in such a way that it reaches a measure in the end of the immersed into the insertion zone of the profile section, which corresponds to the local distance of the Einsteckö Maschinenswandungsabête , This has the consequence that the bend lines come in line with the corresponding Einsteckö Maschinenswandungsabroughe the insertion. As a result, a press fit is generated.
  • peripheral sections that is to say the conical surface sections, do not necessarily have to come into contact with the corresponding sections of the insertion opening.
  • the rounded groove bottom sections of the profile section come into contact with the corresponding, concavely rounded sections of the insertion opening. Due to the surface pressure, the contact surfaces can enlarge.
  • a drive part 1 which is formed by a screwdriver blade.
  • the free end of the drive member 1 has a profile section 2.
  • This profile section 2 has circumferentially six identically shaped and arranged at the same angular distance of 60 degrees each ribs 8.
  • each grooves 7 Between the ribs 8 are each grooves 7, wherein the grooves 7 have rounded groove bottoms.
  • the rounded groove bottoms 7 extend between each two mutually parallel creases 12.
  • Between each groove 7 bounding crease lines 12 extend Kegelmantelab bain songsites 11 of the ribs 8.
  • the creases 12 remove with their distance from the free end of the end face 2 'of the profile section 2 from each other.
  • the ribs 8 are thus wider with increasing distance from the end face 2 '.
  • the apex lines 9 of the ribs 8 running through the center of the truncated cone lateral surface sections 11 are at a distance B from each other. This distance B defines the wrench size. It corresponds to a distance A of the base lines 10 of the grooves 7 from each other.
  • the base lines 10 of the grooves 7 have an angle ⁇ to the axis M of the profile section 12.
  • the angle ⁇ can assume values between 1.5 and 3 degrees.
  • the values of the angle ⁇ are at small diameters of the profile section 2, ie at Torx sizes 6 to 9 in the range between 2.5 and 3 degrees.
  • These Torx sizes have clearance dimensions A between 1.5 and 2.3 mm.
  • the angle ⁇ is preferably 1.5 degrees. With larger torx sizes, ie with diameters of more than 5 mm, the angle ⁇ can assume values above 2 degrees.
  • the angle ⁇ which is the cone angle of the blank, is preferably between 2.5 and 5.3 degrees, with the Torx sizes 6 to 27 preferably forming the same cone angle.
  • TX30 or TX40 the cone angle ⁇ increases.
  • the surface investment preferably takes place in the distance L from the end face 2 'removed portion of the profile section 2. This is the near-edge region of the insertion of the profile section 2 within the insertion 3.
  • the immersion depth L of the profile section 2 in the insertion 3 varies the Torx size. In small Torx sizes is the immersion depth only 1 or a little more than 1 mm. For larger torx sizes, the immersion depth is 2 and more mm.
  • angles .alpha. And .beta. And the distances A and B are selected such that the bending lines 12 enter clamping sections to wall sections 5, 6 of the insertion opening 3. As a result, a wobble-free press fit is achieved.
  • the grooves extend over their entire length with a constant rounding. This contour line remains the same. This means that the cross-sectional contour of the groove runs on a circular arc that is always the same. The center generating this arc lies outside the profile section.
  • the surface of the rounded groove 7 is thus a partial section of a cylinder jacket wall, wherein the axis of the cylinder is inclined by an angle ⁇ with respect to the axis M.
  • this gap between the bottom of the groove 7 and the convex wall portion 6 is closed.
  • Profile section 2 inserted into the corresponding opening 3 so there is a slight deformation.
  • Profile section and wall of the insertion then lie in the edge region of the convexly rounded portion 6 in a surface system to each other.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Clamps And Clips (AREA)

Claims (8)

  1. Dispositif de transmission de couple de rotation, comportant une partie menée (4) et une partie menante (1), en particulier sous la forme d'un outil de vissage, dont la partie profilée (2) s'engage par conjugaison de forme dans une ouverture d'enfichage (3) sensiblement cylindrique de la partie menée (4), la section transversale de l'ouverture d'enfichage (3) comportant une pluralité, en particulier cinq ou six parties de paroi (5) de forme identique à courbure concave et uniformément réparties dans le sens périphérique, qui se prolongent sans rupture par des parties de paroi (6) ayant chacune la même forme à courbure convexe, les parties de paroi (6) à courbure convexe alternant avec les parties de paroi (5) à courbure concave, qui ont un rayon de courbure plus petit que celui des parties de paroi (6) à courbure convexe, et la partie profilée (2) comportant un nombre de rainures (7) avec chacune un fond arrondi et de nervures (8) s'étendant entre lesdites rainures (7), lequel nombre correspond à la pluralité des parties de paroi (6) à courbure convexe de la section transversale de l'ouverture d'enfichage, lesdites nervures comportent des parties orientées radialement vers l'extérieur, au milieu desquelles s'étendent les lignes de sommet (9) desdites nervures, lesdites lignes de sommet (9) des nervures (8) s'étendent en formant un angle (ß) et les lignes de fond (10) des rainures s'étendent en formant un angle (α), lesquels sont des angles aigus par rapport à la direction de l'axe (M) de la partie profilée, les parties des nervures (8), orientées radialement vers l'extérieur, s'étendent sur une paroi latérale tronconique autour de l'axe (M) de la partie profilée (2) et lesdites parties de paroi latérale tronconique (11) des nervures (8) sont prolongées par les fonds arrondis des rainures (7) moyennant la formation d'une ligne de pliure (12), des lignes de sommet (9) diamétralement opposées sur la face frontale (2') de la partie profilée étant situées l'une par rapport à l'autre à une distance (B), et des lignes de fond (10) diamétralement opposées sur la face frontale (2') de la partie profilée étant situées l'une par rapport à l'autre à une distance (A), les angles (α, ß) et les distances (A, B) étant choisis de telle sorte que les lignes de pliure (12) de la partie profilée (2) enfiché dans l'ouverture d'enfichage (3) entrent en contact linéaire avec les parties de paroi (5, 6) de l'ouverture d'enfichage (3), de telle sorte qu'il se forme un siège de serrage, et pour la transmission du couple de rotation, les zones arrondies des rainures (7) entrent en contact surfacique avec les parties de paroi (6) à courbure convexe de l'ouverture d'enfichage.
  2. Dispositif de transmission de couple de rotation selon la revendication 1, caractérisé en ce que l'angle (α) formé entre la ligne de fond (10) et l'axe (M) de la partie profilée (2) et l'angle (ß) formé entre la ligne de sommet (9) et l'axe (M) de la partie profilée (2) sont différents.
  3. Dispositif de transmission de couple de rotation selon la revendication 2, caractérisé en ce que l'angle (α) de la ligne de fond (10) est supérieur à l'angle (ß) de la ligne de sommet (9).
  4. Dispositif de transmission de couple de rotation selon l'une des revendications précédentes, caractérisé en ce que l'angle (α) formé entre la ligne de fond (10) et l'axe (M) de la partie profilée (2) mesure entre 1,5 et 3 degrés en fonction du diamètre de la partie profilée (2).
  5. Dispositif de transmission de couple de rotation selon l'une des revendications précédentes, caractérisé en ce que l'angle (ß) formé entre la ligne de sommet (10) et l'axe (M) de la partie profilée (2) mesure entre 2,5 et 5,5 degrés en fonction du diamètre de la partie profilée (2).
  6. Dispositif de transmission de couple de rotation selon l'une quelconque des revendications précédentes, caractérisé en ce que le contour de la section transversale du fond de rainure (7) s'étend sur une ligne en arc de cercle.
  7. Dispositif de transmission de couple de rotation selon l'une des revendications précédentes, caractérisé en ce que la largeur, mesurée dans le sens périphérique, des parties de paroi latérale tronconique (11) délimitées par les lignes de pliure (12), augmente à partir de la face frontale (2') de la partie profilée (2) de telle sorte que dans la région d'extrémité de la zone (L), plongeant dans l'ouverture d'enfichage (3), de la partie profilée (2), elle atteint une valeur qui correspond à la distance à cet emplacement entre les parties de paroi latérale tronconique.
  8. Dispositif de transmission de couple de rotation selon l'une des revendications précédentes, caractérisé en ce que la distance entre les lignes de fond (10) de deux rainures (7) diagonalement opposées dans une distance (L) depuis la face frontale (2') qui correspond à la profondeur d'engagement de la partie profilée (2) dans l'ouverture d'enfichage (3) est supérieure à la valeur de la distance entre les sommets de deux parties de paroi (6) convexes diamétralement opposées, de telle sorte qu'il ne se forme aucune fente entre le fond de la rainure (7) et le tronçon de paroi (6) convexe.
EP06708629.8A 2005-03-11 2006-03-03 Dispositif de transmission de couple de rotation a siege de serrage entre une partie menante et une partie menee, en particulier outil de vissage Not-in-force EP1858670B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005011734A DE102005011734A1 (de) 2005-03-11 2005-03-11 Drehmomentübertragungseinrichtung insbesondere Schraubwerkzeug
PCT/EP2006/060440 WO2006094940A1 (fr) 2005-03-11 2006-03-03 Dispositif de transmission de couple de rotation a siege de serrage entre une partie menante et une partie menee, en particulier outil de vissage

Publications (2)

Publication Number Publication Date
EP1858670A1 EP1858670A1 (fr) 2007-11-28
EP1858670B1 true EP1858670B1 (fr) 2015-02-25

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EP06708629.8A Not-in-force EP1858670B1 (fr) 2005-03-11 2006-03-03 Dispositif de transmission de couple de rotation a siege de serrage entre une partie menante et une partie menee, en particulier outil de vissage

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EP (1) EP1858670B1 (fr)
DE (1) DE102005011734A1 (fr)
WO (1) WO2006094940A1 (fr)

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US8739660B2 (en) 2006-04-24 2014-06-03 Ttapdrive As Screw head and tool for use therewith
USD623036S1 (en) 2008-11-07 2010-09-07 Milwaukee Electric Tool Corporation Insert bit
US8418587B2 (en) 2008-11-07 2013-04-16 Milwaukee Electric Tool Corporation Tool bit
USD711719S1 (en) 2009-11-06 2014-08-26 Milwaukee Electric Tool Corporation Tool bit
NO20100558A1 (no) * 2010-04-19 2011-10-20 Ttapdrive As Skruehode og verktoy for bruk sammen med det
EP2738400A1 (fr) * 2012-12-03 2014-06-04 Fong Prean Industrial Co., Ltd. Tête de vis avec un creux hexagonal composé
US10022845B2 (en) 2014-01-16 2018-07-17 Milwaukee Electric Tool Corporation Tool bit
TWI579111B (zh) * 2014-11-07 2017-04-21 Star screwdriver system
EP3115153A1 (fr) * 2015-07-07 2017-01-11 IPP Industries Sarl Outil de vissage et vis correspondante
DE102016124719A1 (de) * 2016-12-16 2018-06-21 Nicole Bongartz Verfahren zum drehfesten Verbinden zweier Bauteile
WO2019109098A1 (fr) 2017-12-01 2019-06-06 Milwaukee Electric Tool Corporation Outil rapporté résistant à l'usure
WO2019238250A1 (fr) 2018-06-15 2019-12-19 Nicole Bongartz Procédé pour relier deux composants de manière solidaire en rotation
USD921468S1 (en) 2018-08-10 2021-06-08 Milwaukee Electric Tool Corporation Driver bit
CN109048757B (zh) * 2018-09-27 2024-05-14 南京工业职业技术学院 一种新型自动扶正螺丝刀
WO2020154522A1 (fr) 2019-01-24 2020-07-30 Acument Intellectual Properties, Llc Conception d'embout à ajustement collant amélioré
DE102020110450B4 (de) 2020-04-16 2024-05-23 Nicole Bongartz Antriebselement
DE102022103942A1 (de) 2022-02-18 2023-08-24 Nicole Bongartz Antriebselement, insbesondere in der Form einer Schraube

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DE102005011734A1 (de) 2006-09-14
EP1858670A1 (fr) 2007-11-28
WO2006094940A1 (fr) 2006-09-14

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