EP0512248B1 - Outil pour visser, notamment tournevis - Google Patents

Outil pour visser, notamment tournevis Download PDF

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Publication number
EP0512248B1
EP0512248B1 EP92105569A EP92105569A EP0512248B1 EP 0512248 B1 EP0512248 B1 EP 0512248B1 EP 92105569 A EP92105569 A EP 92105569A EP 92105569 A EP92105569 A EP 92105569A EP 0512248 B1 EP0512248 B1 EP 0512248B1
Authority
EP
European Patent Office
Prior art keywords
screwing tool
polygon
intermediate section
flank
sections
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.)
Expired - Lifetime
Application number
EP92105569A
Other languages
German (de)
English (en)
Other versions
EP0512248A1 (fr
Inventor
Martin Strauch
Andreas Reusch
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 EP0512248A1 publication Critical patent/EP0512248A1/fr
Application granted granted Critical
Publication of EP0512248B1 publication Critical patent/EP0512248B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • B25B15/008—Allen-type keys
    • 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

  • polygonal screwing tools are known in the prior art, which are designed with flanks specially adapted to the inner sleeve design, for example from US Pat. No. 4,338,835.
  • each convex flank section has more than twice the length of the intermediate section.
  • a ratio between the flank section and the intermediate section of 4: 1 is recommended. Deviations up or down are possible.
  • the straight intermediate section runs tangentially to the adjacent end region of both convex flank sections. In the case of a concave intermediate section, the approximately the same length of all arch sections is advantageous.
  • the intermediate section can be formed by a throat filled with diamond particles. Sliding out of the working end from the inner polygon is therefore further counteracted.
  • the screwdriver 1 illustrated in FIG. 1 has a handle 2 with a blade 3 embedded therein, which can be rotated with respect to the handle.
  • the latter has a shaft 4 with a circular cylindrical cross section, which forms a hexagonal outer polygon 5 at the end. This represents the working end of the screwdriver 1 and is suitable for plunging into the hexagon socket 6 of the screw head 7 of a hexagon socket screw 8.
  • the hexagon socket 6 is composed of the straight hexagon socket surfaces 9 such that two hexagon socket surfaces meet in an edge 10.
  • the distance between two mutually parallel, opposite hexagon socket surfaces 9 is the key width S.
  • FIG. 5 shows that the rectilinear intermediate section 13 extends tangentially to the adjacent end region of both convex flank sections 12.
  • the corresponding tangent 18 includes an angle alpha of approximately 3.5 ° with the connecting lines 17.
  • the length y of the convex flank section 11 is twice the length x of the intermediate section 13. In the exemplary embodiment, a ratio between flank section 12 and intermediate section 13 of approximately 4: 1 is selected.
  • the distance dimension between two parallel opposing flanks 11 of the hexagon socket 5 is the width across flats 51, which is adapted to that of the hexagon socket 6.
  • the screw 8 as illustrated in FIG. 4, is to be taken along in the direction of the arrow by means of the screwdriver 1, the external hexagon 5, which represents the end of the work, must first be inserted into the hexagon socket opening 6 of the screw head 7. Then turn the screwdriver 1 in the direction of the arrow. There is a slight relative rotation by the angle beta between the hexagon socket screw 8 and the hexagon socket 5. Taking into account a certain deformation of the screw head 7, there is a large support surface between the hexagon socket surfaces 9 and the corresponding convex flank sections 12. In detail, this means that almost a flank section 12 of each flank 11 and also the intermediate section 13 or a large part its length comes to rest on the hexagon socket surface 9, so that optimal torques can be transmitted.
  • the centers Z (see FIG. 12) of the convex flank sections 12 ' lie at a distance a from the polygon center Mp and beyond the respective cross section bisecting H-H, the latter by the dimension b, which is approximately half as large as the dimension a.
  • the dimension a corresponds to approximately 1/4 the length of the cross-section bisector H-H.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Dowels (AREA)
  • Macromonomer-Based Addition Polymer (AREA)

Claims (7)

  1. Outil de vissage polygonal, en particulier tournevis (1) ou embout de tournevis, pour des vis multiplan intérieur, en particulier des vis à six pans creux à douille intérieure (8) avec des flancs (11) similaires dans le sens périphérique, dans lequel :
    a) chaque flanc comporte deux parties de flanc (12/12') d'allure convexe;
    b) les lignes de courbure convexes de deux flancs voisins (11) se coupent en formant respectivement un angle de polygone (14);
    c) dans la zone médiane de chaque flanc (11), est prévue une partie intermédiaire (13/13') d'allure non convexe;
    d) la partie intermédiaire est rectiligne ou concave;
    e) la partie intermédiaire sépare les deux parties de flanc (12/12') à distance l'une de l'autre.
  2. Outil de vissage selon la revendication 1, caractérisé en ce que les extrémités du côté polygonal (14) des parties de flanc (12) d'allure convexe sont disposées en retrait par rapport au prolongement rectiligne (15) des deux points d'extrémité (16) de la partie intermédiaire (13).
  3. Outil de vissage selon la revendication 1, caractérisé en ce que la partie intermédiaire rectiligne (13) est tangentielle à la zone d'extrémité voisine des deux parties de flanc convexes (12).
  4. Outil de vissage selon l'une ou plusieurs des revendications précédentes, caractérisé en ce qu'aussi bien les parties de flanc convexes (12/12') que les parties intermédiaires (13/13') sont équipées d'un revêtement de particules de diamant.
  5. Outil de vissage selon la revendication 1, caractérisé en ce que la longueur (X') de la partie intermédiaire concave (13') correspond à peu près à la longueur de la zone d'allure convexe (12').
  6. Outil de vissage selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que les extrémités du côté du polygone (14) des zones d'allure convexe sont espacées de la tangente (T), tracée au point le plus bas (P) de la zone concave, d'une distance normale (A) inférieure à la distance normale entre le point de crête ou sommet (Sch) et cette tangente (T).
  7. Outil de vissage selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que la distance est à peu la moitié de l'intervalle (Mp-H) allant du centre du polygone (Mp) jusqu'à l'extrémité correspondante (14') du côté du polygone.
EP92105569A 1991-05-02 1992-04-01 Outil pour visser, notamment tournevis Expired - Lifetime EP0512248B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE9105419U 1991-05-02
DE9105419 1991-05-02
DE9110904U 1991-09-03
DE9110904U DE9110904U1 (de) 1991-05-02 1991-09-03 Schraubwerkzeug, insbesondere Schraubendreher

Publications (2)

Publication Number Publication Date
EP0512248A1 EP0512248A1 (fr) 1992-11-11
EP0512248B1 true EP0512248B1 (fr) 1996-06-05

Family

ID=25958139

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92105569A Expired - Lifetime EP0512248B1 (fr) 1991-05-02 1992-04-01 Outil pour visser, notamment tournevis

Country Status (10)

Country Link
US (1) US5284075A (fr)
EP (1) EP0512248B1 (fr)
JP (1) JP3285380B2 (fr)
AT (1) ATE138840T1 (fr)
DE (2) DE9110904U1 (fr)
DK (1) DK0512248T3 (fr)
ES (1) ES2087332T3 (fr)
GR (1) GR3020592T3 (fr)
HK (1) HK41997A (fr)
SG (1) SG43839A1 (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5873290A (en) * 1997-06-06 1999-02-23 Hand Tool Design Corporation Hex head wrench
DE19738079A1 (de) * 1997-09-01 1999-03-04 Werner Hermann Wera Werke Kraftübertragungsprofil, insbesondere an einem Mehrkant-Schraubwerkzeug
US6223634B1 (en) * 1997-10-03 2001-05-01 Phillips Screw Company Recessed head fastener and driver systems
DE10011065A1 (de) * 2000-03-07 2001-09-13 Delphi Tech Inc Kupplung zwischen zwei Wellen
US20030000351A1 (en) * 2001-06-28 2003-01-02 Ortho Development Corporation Interference fit screw driver
US20050166724A1 (en) * 2004-01-29 2005-08-04 Hand Innovations, Inc. Twisted and tapered driver for a threaded fastener
DE202006010137U1 (de) * 2006-06-28 2006-09-28 Klann-Spezial-Werkzeugbau-Gmbh Vorrichtung zum Ausrichten einer Druckplatte eines Federspanners
DE102008062111A1 (de) * 2008-12-16 2010-06-17 Gühring Ohg Schraubenschlüssel mit Führungsbuchse
TWM386946U (en) * 2010-03-19 2010-08-21 Xi-Gang Xu Anti-slip nut and bolt
US8640575B2 (en) * 2011-08-24 2014-02-04 New Way Tools Co., Ltd Ball end hex wrench
US10697499B2 (en) * 2015-03-19 2020-06-30 Acument Intellectual Properties, Llc Drive system with full surface drive contact
JP2017193022A (ja) * 2016-04-21 2017-10-26 三菱重工業株式会社 キーレンチ
US11059162B2 (en) 2017-05-17 2021-07-13 Milwaukee Electric Tool Corporation Screwdriver
USD855433S1 (en) 2017-08-09 2019-08-06 Milwaukee Electric Tool Corporation Screwdriver
US10960520B2 (en) * 2018-09-04 2021-03-30 Snap-On Incorporated Hex driver
USD888526S1 (en) 2018-09-04 2020-06-30 Snap-On Incorporated Hex driver

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2083092A (en) * 1936-01-20 1937-06-08 Joseph R Richer Screw
US2193477A (en) * 1938-11-15 1940-03-12 Vellier William A De Screw
US3120251A (en) * 1959-11-12 1964-02-04 Voi Shan Ind Inc Screwdriver
US3498173A (en) * 1968-12-09 1970-03-03 Haws Drinking Faucet Co Anti-tampering fastener
ES218263Y (es) * 1976-01-23 1977-01-16 Bocanegra Marquina Jesus Mango horizontal anatomico para herramientas manuales.
CA1066542A (fr) * 1977-03-07 1979-11-20 Bernard F. Reiland Fixation a douille lobulaire pourvue d'une fente
US4269246A (en) * 1979-05-10 1981-05-26 Textron Inc. Fastener and driver assembly
GB2063743A (en) * 1979-11-29 1981-06-10 Crowcroft P L Screwdriver blades
US4338835A (en) * 1980-01-24 1982-07-13 Leon Simons Recessed head fastener and driver therefor
DE3120216A1 (de) * 1981-05-21 1982-12-09 Fa. Fedor Ulisch, 5630 Remscheid "stufensteckschluessel"
DE3206494A1 (de) * 1982-02-24 1983-09-08 Rappold, Manfred, Dr., 7117 Bretzfeld Kopf- und schluesselausbildung fuer eine schraube
US4625598A (en) * 1985-05-10 1986-12-02 Frank Wolfram Positive engagement screw driver tool
DE8519877U1 (de) * 1985-07-10 1985-10-17 Schramm, Heinrich Wilhelm, 4803 Steinhagen Schraubendreher
US4938731A (en) * 1989-02-07 1990-07-03 Barry Wright Corporation Rotatable, self-aligning lobe coupling
US4970922A (en) * 1989-03-23 1990-11-20 Snap-On Tools Corporation Torque driving tool and retainer for driven member
DE9001707U1 (de) * 1990-02-14 1991-06-13 Wera-Werk Hermann Werner Gmbh & Co, 5600 Wuppertal Innenbuchsensechskantschlüssel

Also Published As

Publication number Publication date
US5284075A (en) 1994-02-08
ATE138840T1 (de) 1996-06-15
GR3020592T3 (en) 1996-10-31
ES2087332T3 (es) 1996-07-16
EP0512248A1 (fr) 1992-11-11
DK0512248T3 (da) 1996-10-28
JP3285380B2 (ja) 2002-05-27
DE59206460D1 (de) 1996-07-11
JPH05146974A (ja) 1993-06-15
SG43839A1 (en) 1997-11-14
HK41997A (en) 1997-04-11
DE9110904U1 (de) 1992-09-03

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