EP1858670A1 - 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

Info

Publication number
EP1858670A1
EP1858670A1 EP06708629A EP06708629A EP1858670A1 EP 1858670 A1 EP1858670 A1 EP 1858670A1 EP 06708629 A EP06708629 A EP 06708629A EP 06708629 A EP06708629 A EP 06708629A EP 1858670 A1 EP1858670 A1 EP 1858670A1
Authority
EP
European Patent Office
Prior art keywords
profile section
grooves
sections
section
rounded
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
Application number
EP06708629A
Other languages
German (de)
English (en)
Other versions
EP1858670B1 (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

Links

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 torque transmission device with a drive part, in particular in the form of a screwing tool, the profile section of which positively engages in a substantially cylindrical insertion opening of an output part, the cross section of the insertion opening distributing a plurality, in particular five or six, of the same circumferential direction and of identical design has concavely rounded edge sections which merge into convexly rounded edge sections with the same design, the convexly rounded edge sections alternating with the concavely rounded edge sections and having a smaller radius of curvature than the latter, and the profile section being one of the number of convexly rounded Edge sections of the insertion opening cross-section have a corresponding number of grooves each having a rounded bottom and ribs extending between the grooves, the apex lines of the ribs or the group ndlines of the grooves run at an acute angle to the axial direction of the profile section.
  • Such a torque transmission device is known on the market under the name "Torx Wedge".
  • the output parts are usually formed by screw heads.
  • the insertion openings in the screw heads have the shape of a hexagram, the corners of the hexagram being rounded such that concave and convex rounding sections of the cross section alternate with one another.
  • the opening is essentially cylindrical, ie the walls of the openings run without any significant taper.
  • the screwing tool inlet openings are usually embossed, they run slightly conically to form draft angles.
  • the drive part is the blade of a screwdriver or bit.
  • the profile section has ribs and grooves which alternately extend in the axial direction and the dimensions of the rounded Sections of the insertion opening are adapted.
  • the apex lines of the ribs and the base lines of the grooves run at an angle to the axis of the profile section which is between 2 1 A degrees and 3 1 A degrees.
  • the invention has for its object to provide means to develop the torque transmission device in such a way that the driven part and the drive part hold each other in a press fit.
  • the achievement of the object according to the invention results in a torque transmission device which is particularly suitable for the pairing of screw and screwing tool.
  • the profile section of a screwing tool designed according to the invention can be inserted into the insertion opening of a screw designed according to the invention.
  • the screw holds in the clamp on the screwing tool, so that the screw can be easily. No additional holding means are required to screw the screw into the associated threaded opening.
  • radially outward-pointing sections of the rib run on a conical surface around the axis of the profile section and that these cone-lacking surface sections of the ribs merge into the rounded bottoms of the grooves, forming a kink.
  • the grooves now form rounded bottoms, which run in particular on circular arc lines.
  • the ribs run forming a kink line, the apex lines of the ribs running in the middle of conical surface sections tapering towards the tip of the profile.
  • angles of the base lines and the angle of the apex lines are each different from the axis of the profile section.
  • the angle of the base line can be greater than the angle of the apex line to the axis of the profile section.
  • the angles of the base line to the profile section are preferably in the range between 1.5 and 3 degrees.
  • the angular amount depends to a large extent on the diameter of the profile section. With small diameters of the profile section, the angle is between 2.5 and 3 degrees. With an average diameter of the profile section between approximately 2.5 and 5 mm, the angle is 1.5 degrees. For larger diameters over 5 mm, larger angles are used.
  • the angles of the apex lines of the ribs to the axis of the profile section also vary with its diameter.
  • the angle is determined by pre-turning the blanks before working in the grooves.
  • frusto-conical profile sections are first turned.
  • the pre-rotation angle is preferably 2.5 degrees.
  • this angle can also be 5.5 degrees.
  • the angles are preferably selected so that the circumferential direction of the width of the conical lateral surface sections delimited by the kink lines increases from the front side of the profile section in such a way that it reaches a dimension in the end region of the zone of the profile section immersed in the insertion opening which corresponds to the distance between the insertion opening wall walls there. sections corresponds.
  • the kink lines in line contact the corresponding insertion opening wall sections of the insertion opening.
  • the circumferential sections that is to say the conical lateral surface sections, need not necessarily come into contact with the corresponding sections of the insertion opening.
  • the invention also relates to a screwing tool with a profile section, as described above. With this profile section, Torx screws can be manufactured in a clamped position.
  • FIG. 8 a screwing tool according to FIG. 1 inserted into a screwing tool insertion opening according to FIG. 7 along a section line according to line VIII-VIII in FIG. 7, 9: a representation according to FIG. 8, but along the section line IX-IX in FIG. 7,
  • FIG. 10 an enlarged top view of the screw head shown in FIG. 7 with the section of the profile cut in the plane of the end face of the screw head.
  • the exemplary embodiments shown in the figures are a drive part 1 which is formed by a screwdriver blade.
  • the free end of the drive part 1 has a profile section 2.
  • This profile section 2 has ribs 8 of the same design in the circumferential direction 6 and arranged at the same angular spacing of 60 degrees in each case.
  • Grooves 7 are located between the ribs 8, the grooves 7 being rounded groove bottoms exhibit.
  • the rounded groove bottoms 7 extend between two mutually parallel fold lines 12.
  • tapered jacket sections 11 of the ribs 8 extend.
  • the fold lines 12 move away from the free end from the face 2 1 of the Profile section 2 to each other.
  • the ribs 8 thus become wider with increasing distance from the end face 2 1 .
  • the apex lines 9 of the ribs 8 running through the center of the truncated cone surface sections 11 are at a distance A from one another. This distance A defines the width across flats. It corresponds to a distance B of the base lines 10 of the grooves 7 from one another.
  • 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 ⁇ lie with small diameters of the profile Section 2, i.e. for torx sizes 6 to 9 in the range between 2.5 and 3 degrees. These torx sizes have spacing dimensions A between 1.5 and 2.3 mm.
  • the angle ⁇ is preferably 1.5 degrees. With larger torx sizes, i.e. with diameters of over 5 mm, the angle ⁇ can assume values over 2 degrees.
  • the angle ⁇ which is the cone angle of the blank, is preferably between 2.5 and 5.3 degrees, the torx sizes 6 to 27 preferably forming the same cone angle.
  • the cone angle ß increases with larger torx sizes, TX30 or TX 40.
  • the sections 11 running on a circular arc line lie in contact with the wall sections of the concavely rounded sections 5 of the insertion opening 3.
  • the rounded sections 7 of the groove enter a surface contact with the convexly rounded sections 6 of the insertion opening 3, so that the torque is transmitted via a surface contact.
  • the surface contact is preferably carried out at a distance L from the end face 2 1 of the section 2 of the profile section. This is the region of the insertion zone of the section 2 of the profile within the insertion opening 3.
  • the depth of insertion L of the section 2 into the insertion opening 3 also varies the torx size.
  • the immersion depth is only 1 or a little more than 1 mm. With larger torx sizes, the immersion depth is 2 and more mm.
  • the angles .alpha. And .beta. And the distances A and B are selected such that the kink lines 12 come into contact with the wall sections 5, 6 of the insertion opening 3. This results in a wobble-free clamping fit.
  • the grooves extend over their entire length with a constant curve. This contour line remains the same. This means that the cross-sectional contour of the groove runs on a circular arc line that is always the same. The center point generating this circular arc lies outside the profile section.
  • the surface of the rounded groove 7 is thus a partial section of a cylinder jacket wall, the axis of the cylinder being inclined by an angle ⁇ with respect to the axis M.
  • this gap between the bottom of the groove 7 and the convex wall section 6 is closed.
  • the distance between the base lines 10 of two diagonally opposite grooves 7 at a distance L, which corresponds to the immersion depth, from the end face 2 1 is more than the distance dimension of the apex of two diametrically opposed convex wall sections 6 the profile section 2 is inserted into the corresponding opening 3, so a slight deformation occurs.
  • Profile section and wall of the insertion voltage are then in the edge region of the convexly rounded section 6 in a surface area 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)

Abstract

L'invention concerne un dispositif de transmission de couple de rotation pourvu d'une partie menante (1), en particulier sous la forme d'un outil de vissage dont la section profilée (2) entre en prise, par liaison de forme, avec une ouverture d'insertion (3) sensiblement cylindrique d'une partie menée (4). La section transversale de l'ouverture d'insertion (3) présente plusieurs, en particulier cinq ou six, sections de bordure (5) réparties de façon égale dans le sens périphérique, de forme arrondie concave identique et se changeant, sans brisure, en sections de bordure (6) de forme arrondie convexe identique. Les sections de bordure arrondies convexes (6) alternent avec les sections de bordure arrondies concaves (5) et présentent un rayon de courbure inférieur à celui des sections concaves. La section profilée (2) présente un nombre de rainures (7) à fond arrondi, qui correspond au nombre de sections de bordure convexes (5) de la section transversale de l'ouverture d'insertion, ainsi que des nervures (8) s'étendant entre ces rainures, les lignes de sommet (9) des nervures (8) et les lignes de fond (10) des rainures (7) s'étendant de manière à former un angle aigu avec l'axe de la section profilée. L'invention se caractérise en ce que des sections des nervures (8) tournées radialement vers l'extérieur s'étendent sur une surface latérale de cône tronqué autour de l'axe (M) de la section profilée (2) et ces sections de surface latérale de cône (11) des nervures (8) se changent en fonds arrondis des rainures (7), en formant une ligne de brisure (12).
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 true EP1858670A1 (fr) 2007-11-28
EP1858670B1 EP1858670B1 (fr) 2015-02-25

Family

ID=36293431

Family Applications (1)

Application Number Title Priority Date Filing Date
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

Country Status (3)

Country Link
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
WO2010054169A1 (fr) 2008-11-07 2010-05-14 Milwaukee Electric Tool Corporation Outil rapporté
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
EP3807544A1 (fr) 2018-06-15 2021-04-21 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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Also Published As

Publication number Publication date
DE102005011734A1 (de) 2006-09-14
WO2006094940A1 (fr) 2006-09-14
EP1858670B1 (fr) 2015-02-25

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