EP0460176B1 - Schraubenschlüssel aus verbundwerkstoff - Google Patents

Schraubenschlüssel aus verbundwerkstoff Download PDF

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Publication number
EP0460176B1
EP0460176B1 EP91901824A EP91901824A EP0460176B1 EP 0460176 B1 EP0460176 B1 EP 0460176B1 EP 91901824 A EP91901824 A EP 91901824A EP 91901824 A EP91901824 A EP 91901824A EP 0460176 B1 EP0460176 B1 EP 0460176B1
Authority
EP
European Patent Office
Prior art keywords
handle
wrench
heads
key
planes
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
EP91901824A
Other languages
English (en)
French (fr)
Other versions
EP0460176A1 (de
Inventor
Pierre Monnet
Jean-Pierre Demurger
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.)
Demurger SA
Original Assignee
Demurger SA
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 Demurger SA filed Critical Demurger SA
Priority to AT9191901824T priority Critical patent/ATE105222T1/de
Publication of EP0460176A1 publication Critical patent/EP0460176A1/de
Application granted granted Critical
Publication of EP0460176B1 publication Critical patent/EP0460176B1/de
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
    • B25B13/00—Spanners; Wrenches
    • B25B13/02—Spanners; Wrenches with rigid jaws
    • B25B13/08—Spanners; Wrenches with rigid jaws of open jaw type
    • 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
    • B25B13/00—Spanners; Wrenches
    • B25B13/02—Spanners; Wrenches with rigid jaws
    • B25B13/04—Spanners; Wrenches with rigid jaws of ring jaw type
    • 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
    • B25B23/16—Handles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G1/00—Handle constructions
    • B25G1/10—Handle constructions characterised by material or shape
    • B25G1/105—Handle constructions characterised by material or shape for screwdrivers, wrenches or spanners

Definitions

  • the invention relates to an improved composite tightening key, that is to say made of plastic material and the tightening heads of which comprise a submerged metal insert, forming a jaw or clamping jaw.
  • this invention can quite be adapted to traditional steel keys.
  • the keys obtained are not satisfactory, on the one hand, because the said inserts tend to turn in the head, and on the other hand, the resistance of the keys is often little different from that of the plastic handle, which considerably limits its use, and in any case is lower than the floor of the industrial standards currently in force.
  • US-A-1 793 714 describes a key comprising at each of its ends a tightening head, but in which the two heads are located in two distinct non-parallel planes, intersecting at the center of the key, along a line perpendicular to the general direction of the handle of the key. While this realization has the advantage of favoring work at the level of places, and in particular of nuts that are difficult to access, on the other hand, the particular morphology of the handle, altering the grip of the key, reduces the amount of l 'effort applicable at the handle, making this type of key limited use.
  • the invention overcomes these drawbacks. It aims at an improved key of the type in question, that is to say made of plastic material advantageously loaded with glass fibers, and having metal inserts at the heads to act as jaws or clamping jaws, which either easy to manufacture and above all, do not have the drawbacks described above, in particular as regards resistance. More specifically, the invention relates to an improved tightening key which is light, and whose size is comparable to the corresponding metallic keys currently existing.
  • This improved tightening wrench is constituted by a handle having at each of its ends a tightening head in the form of an open fork, an eye or a socket with a polygonal section, the two tightening heads being arranged in two distinct planes, not parallel , and each extending by a coplanar portion forming part of the handle, cf. US-A-1,793,714.
  • the invention consists in making a non-planar key, the two heads of said key being in two different planes extending at the level of the handle, in order to define a handle that is also not planar, each of the planar parts playing the role of beam for the other, resulting in a significant increase in the resistance of this handle, in particular to bending.
  • Figure 1 is a perspective view of a composite key according to the invention.
  • Figure 2 is a cross section of this key made at its center.
  • Figure 3 is a perspective view of another embodiment of the key according to the invention.
  • FIG. 4 is a cross section of the key shown in FIG. 3.
  • the composite tightening key (1) basically consists of a handle (2) having at its two ends a tightening head (3) and (4) .
  • these clamping heads are open forks (5) and (6).
  • the clamping heads (3) and (4) comprise in known manner a metal insert embedded in the plastic material constituting the assembly formed by the key (1).
  • this plastic material is reinforced with glass fibers in order to give it more strength and rigidity.
  • the two heads (3) and (4) are located in two different planes and not parallel.
  • the heads (3) and (4) each have a coplanar extension (10) and (11), constituting by assembly together the handle itself.
  • the two planes of the two heads (3) and (4) intersect at the level of the handle (2) along a secant line (12) extending substantially over the entire length of the handle (2), and more exactly along its diagonal.
  • the handle obtained is not plane but bi-plane, thereby defining an angle ⁇ .
  • each of the extensions respectively (10) and (11) exerts on the other and vice versa a role of beam, thus significantly increasing the resistance of the handle (2).
  • this structure and this arrangement allow easier gripping of the tightening keys thus produced, given that it suffices to press one or the other of the two heads (3) and ( 4) or extensions (10) and (11) of the handle (2) to highlight the complementary part and thus grasp it.
  • each of the heads (3,4) has at its base a clearance respectively (8,9), symmetrical with each other relative to the center of the key, allowing a grip and more effective action on the key when significant efforts are applied to it.
  • these clearances make it possible to increase the angular movement of the key.
  • the handle (2) has at its center, and parallel to its two lateral edges, a longitudinal lumen (7), crossed by the secant (12), and intended to allow the storage of a plurality of keys of the type in question.
  • the keys having by construction a V-shaped section, and come to fit, during storage, one on the other and on a projection or a tenon passing through the lumen (7) of each of the keys.
  • one of the main faces of the handle (2) has a projection, located towards the center of said handle.
  • the opposite face of the handle (2) has a recess of corresponding shape, also located towards the center of the handle.
  • These original keys can be produced by folding, cutting, injection, compression or any other suitable technique known for this type of application.
  • the keys described are light and insulating.
  • in the long run there are no cracking phenomena or detachment phenomena from the insert of the clamping head.
  • they have performances comparable to the corresponding metal keys, taking into account the increase in resistance and rigidity of the handle by beam effect from one part of the handle to the other.
  • the ergonomics are optimized, making these keys much easier to grasp, especially when the user has greasy fingers.

Claims (6)

  1. Verbesserter Schraubenschlüssel, bestehend aus einem Griffstück (2), das an seinen beiden Enden mit einem Schraubkopf (3, 4) in Gestalt einer offenen Gabel, eines Auges oder eines Ringes mit vieleckigem Querschnitt verbunden ist, wobei die beiden Schraubköpfe (3, 4) in zwei verschiedenen, zueinander nicht parallelen Ebenen angeordnet und jeweils durch einen koplanaren Abschnitt (10, 11) verlängert sind, der einen Teil des besagten Griffstückes (2) bildet, dadurch gekennzeichnet, daß
    - die beiden koplanaren Abschnitte (10, 11) das Griffstück (2) in seiner Gesamtheit bilden und einander über die gesamte Länge derselben schneiden;
    - und daß die durch den Schnitt der beiden Ebenen definierte Schnittlinie (12) sich von einem Ende des Griffstückes (2) bis zum anderen erstreckt, und zwar entlang seiner Diagonalen und entlang dessen gesamter Länge.
  2. Schraubenschlüssel nach Anspruch 1, dadurch gekennzeichnet, daß der durch die beiden Ebenen der beiden Schraubköpfe (3, 4) sowie deren Verlängerungen (10, 11) definierte Winkel α zwischen 90° und 170° liegt.
  3. Schraubenschlüssel nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Schlüssel aus Kunststoff ausgeführt ist, der gegebenenfalls mit Glasfasern verstärkt ist, und daß die Köpfe (3, 4) mit einem eingespritzten, metallischen Einsatz versehen sind, der die Funktion des Kopfes oder der Backe für das Schrauben ausübt.
  4. Schraubenschlüssel nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß jeder der Schraubköpfe (3, 4) an seinem Ansatz mit einer Ausnehmung (8, 9) versehen ist, und daß die Schnittlinie (12) die Ausnehmungen miteinander verbindet.
  5. Schraubenschlüssel nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das Griffstück (2) mit einem Langloch (7) versehen ist, das die Schnittlinie (12) durchsetzt.
  6. Schraubenschlüssel nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß das Griffstück (2) auf einer seiner Breitseiten eine Auswölbung und auf der gegenüberliegenden Breitseite eine entsprechende Einwölbung aufweist, wobei die Auswölbung und die Einwölbung vorgesehen sind, um mit einer Auswölbung bzw. einer Einwölbung eines anderen Schlüssels derselben Art zusammenzuwirken, wenn die Schlüssel bei ihrer Lagerung gestapelt werden.
EP91901824A 1989-12-22 1990-12-21 Schraubenschlüssel aus verbundwerkstoff Expired - Lifetime EP0460176B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT9191901824T ATE105222T1 (de) 1989-12-22 1990-12-21 Schraubenschluessel aus verbundwerkstoff.

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR8917396A FR2656248B1 (fr) 1989-12-22 1989-12-22 Cle de serrage perfectionnee composite.
FR8917396 1989-12-22
PCT/FR1990/000936 WO1991009708A1 (fr) 1989-12-22 1990-12-21 Cle de serrage perfectionnee composite

Publications (2)

Publication Number Publication Date
EP0460176A1 EP0460176A1 (de) 1991-12-11
EP0460176B1 true EP0460176B1 (de) 1994-05-04

Family

ID=9389110

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91901824A Expired - Lifetime EP0460176B1 (de) 1989-12-22 1990-12-21 Schraubenschlüssel aus verbundwerkstoff

Country Status (8)

Country Link
US (1) US5172614A (de)
EP (1) EP0460176B1 (de)
JP (1) JP2962577B2 (de)
CA (1) CA2045570C (de)
DE (1) DE69008715T2 (de)
ES (1) ES2052366T3 (de)
FR (1) FR2656248B1 (de)
WO (1) WO1991009708A1 (de)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9115517U1 (de) * 1991-12-14 1992-04-23 Friedr. Dick Gmbh, 7300 Esslingen, De
US5970826A (en) * 1996-08-16 1999-10-26 Snap-On Technologies, Inc. Composite socket with double inserts
US6318216B1 (en) 1997-05-07 2001-11-20 Snap-On Technologies, Inc. Composite box wrench with reinforcing and retaining structure
DE29804709U1 (de) * 1998-03-16 1998-05-14 Hsieh Chih Ching Schraubenschlüsselgriff
US6006633A (en) * 1998-07-08 1999-12-28 The Stanley Works Pliers (1)
US5996450A (en) * 1998-07-15 1999-12-07 The Stanley Works Pliers (2)
USD434292S (en) * 1999-08-20 2000-11-28 Chih-Ching Hsieh Wrench
US6552663B2 (en) * 2000-02-16 2003-04-22 Display Edge Technology, Ltd. Product information display system with expanded retail display functions
US6408723B1 (en) 2000-07-28 2002-06-25 Snap-On Technologies, Inc. Insulating composite shaft tool with interchangeable heads and method of construction thereof
JP4504530B2 (ja) * 2000-08-07 2010-07-14 住友ゴム工業株式会社 バルブコアの回し治具
US6655239B1 (en) 2002-08-22 2003-12-02 Richard J. Macor Double-ended wrench with ergonomic handle
US6792833B2 (en) * 2002-08-22 2004-09-21 Proprietary Technologies, Inc. Double-ended wrench with ergonomic handle portions
US20050000328A1 (en) * 2003-07-03 2005-01-06 Chih-Ching Hsien Twisted handle for hand tools
US6895837B2 (en) * 2003-07-17 2005-05-24 Chih-Ching Hsien Wrench structure having a strengthened handle
US6920811B2 (en) * 2003-08-08 2005-07-26 Chih-Ching Hsien Bent wrench having torque measurement function
US7017455B2 (en) * 2004-03-11 2006-03-28 Chih-Ching Hsien Handle of a hand tool
US7062978B1 (en) * 2005-06-07 2006-06-20 Chih-Ching Hsien Hand tool with strain gauges
WO2008115491A1 (en) * 2007-03-22 2008-09-25 Black & Decker Inc. Device and method for changing tool bit in a power tool
US7607372B2 (en) * 2007-05-16 2009-10-27 Proxene Tools Co., Ltd. Method for making a wrench
CN102310372A (zh) * 2010-07-08 2012-01-11 鑫爵实业股份有限公司 扳手结构
US8485072B2 (en) * 2011-06-23 2013-07-16 Alan Hamilton Swing Quasi open-end wrench
WO2014028779A1 (en) * 2012-08-15 2014-02-20 Ragner Gary Dean Folding multiwrenches
JP5889370B1 (ja) * 2014-08-07 2016-03-22 将 阪口 ガス切断器の火口
USD850744S1 (en) 2018-02-19 2019-06-04 Tti (Macao Commercial Offshore) Limited Hand tool
TWI802232B (zh) * 2021-03-04 2023-05-11 優鋼機械股份有限公司 手工具

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1793714A (en) * 1928-04-14 1931-02-24 Newberg Emil Duplex wrench
US2083131A (en) * 1935-07-30 1937-06-08 J P Danielson Co Inc Wrench set holder
FR1010953A (fr) * 1947-12-18 1952-06-17 Werkzeugfabrik Agmo Jeux de clés à écrous
US2909954A (en) * 1958-02-03 1959-10-27 Rhoads Stanley Plastic open end wrench
US3298260A (en) * 1965-10-12 1967-01-17 Jr Lee M Rothenberg Sheet metal tool
DE1973393U (de) * 1967-09-26 1967-11-23 Hazet Werk Zerver Hermann Schraubenschluessel.
GB1251419A (de) * 1969-06-17 1971-10-27
US4738169A (en) * 1985-12-19 1988-04-19 Artesian Industries Wrench

Also Published As

Publication number Publication date
JP2962577B2 (ja) 1999-10-12
FR2656248B1 (fr) 1994-05-27
CA2045570C (fr) 1999-04-20
CA2045570A1 (fr) 1991-06-23
DE69008715T2 (de) 1994-08-18
WO1991009708A1 (fr) 1991-07-11
ES2052366T3 (es) 1994-07-01
US5172614A (en) 1992-12-22
FR2656248A1 (fr) 1991-06-28
EP0460176A1 (de) 1991-12-11
DE69008715D1 (de) 1994-06-09
JPH04504684A (ja) 1992-08-20

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