EP0512248B1 - Schraubwerkzeug, insbesondere Schraubendreher - Google Patents
Schraubwerkzeug, insbesondere Schraubendreher Download PDFInfo
- 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
Links
Images
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)
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 (de) | 1992-11-11 |
EP0512248B1 true EP0512248B1 (de) | 1996-06-05 |
Family
ID=25958139
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92105569A Expired - Lifetime EP0512248B1 (de) | 1991-05-02 | 1992-04-01 | Schraubwerkzeug, insbesondere Schraubendreher |
Country Status (10)
Country | Link |
---|---|
US (1) | US5284075A (it) |
EP (1) | EP0512248B1 (it) |
JP (1) | JP3285380B2 (it) |
AT (1) | ATE138840T1 (it) |
DE (2) | DE9110904U1 (it) |
DK (1) | DK0512248T3 (it) |
ES (1) | ES2087332T3 (it) |
GR (1) | GR3020592T3 (it) |
HK (1) | HK41997A (it) |
SG (1) | SG43839A1 (it) |
Families Citing this family (16)
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)
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 (en) * | 1977-03-07 | 1979-11-20 | Bernard F. Reiland | Lobular socket head fastener with service slot |
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 |
-
1991
- 1991-09-03 DE DE9110904U patent/DE9110904U1/de not_active Expired - Lifetime
-
1992
- 1992-04-01 EP EP92105569A patent/EP0512248B1/de not_active Expired - Lifetime
- 1992-04-01 SG SG1996001937A patent/SG43839A1/en unknown
- 1992-04-01 DK DK92105569.5T patent/DK0512248T3/da active
- 1992-04-01 ES ES92105569T patent/ES2087332T3/es not_active Expired - Lifetime
- 1992-04-01 AT AT92105569T patent/ATE138840T1/de not_active IP Right Cessation
- 1992-04-01 DE DE59206460T patent/DE59206460D1/de not_active Expired - Lifetime
- 1992-04-09 US US07/866,319 patent/US5284075A/en not_active Expired - Lifetime
- 1992-04-27 JP JP13417192A patent/JP3285380B2/ja not_active Expired - Fee Related
-
1996
- 1996-07-23 GR GR960401951T patent/GR3020592T3/el unknown
-
1997
- 1997-04-03 HK HK41997A patent/HK41997A/xx not_active IP Right Cessation
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 (de) | 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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