EP0390705A1 - Schraubenschlüssel aus Kunststoff mit metallischem Einsatz - Google Patents

Schraubenschlüssel aus Kunststoff mit metallischem Einsatz Download PDF

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Publication number
EP0390705A1
EP0390705A1 EP90420105A EP90420105A EP0390705A1 EP 0390705 A1 EP0390705 A1 EP 0390705A1 EP 90420105 A EP90420105 A EP 90420105A EP 90420105 A EP90420105 A EP 90420105A EP 0390705 A1 EP0390705 A1 EP 0390705A1
Authority
EP
European Patent Office
Prior art keywords
insert
tightening
head
metal insert
opening
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
EP90420105A
Other languages
English (en)
French (fr)
Other versions
EP0390705B1 (de
Inventor
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 et Cie
Original Assignee
Demurger et Cie
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 et Cie filed Critical Demurger et Cie
Publication of EP0390705A1 publication Critical patent/EP0390705A1/de
Application granted granted Critical
Publication of EP0390705B1 publication Critical patent/EP0390705B1/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

Definitions

  • the invention relates to an improved clamping wrench made of plastic, the clamping head of which comprises a submerged metal insert, forming a clamping jaw or jaw.
  • the invention overcomes these drawbacks. It aims at an improved key of the type in question, that is to say plastic, which is easy to manufacture and does not have the above drawbacks. It relates more particularly to a key of the type in question which is light, easy to manufacture, even in small series, but whose performance is comparable to that of existing metal keys, and which makes it possible to obtain performance at least equal to that of standards currently in force.
  • This plastic tightening key consisting of a handle and a tightening head which has a polygonal opening in which is embedded an open metal insert, made of hard steel, also polygonal, and whose walls form clamping jaws ( or loosening), is characterized : - in that the walls of the metal insert forming jaws are parallel to the lateral faces of the polygonal opening of each clamping head and slightly protrude from these lateral faces; - And in that, at the level of the jaws, the thickness of the insert is between 0.5 and 0.7 times the thickness of the clamping head.
  • the invention consists in providing the walls of the hard and resilient metallic insert, slightly protruding from the lateral faces of the opening of the head, and in having determined an optimal ratio between the thickness of the insert and that of the tightening head itself, so that, when tightening (or loosening), the stresses are essentially concentrated on the insert itself and no longer on the tightening head itself, which makes it possible to reach the required industrial standards, between Nm 45 to 60.
  • the thickness of the insert must be at least equal to half the thickness of the clamping head, but preferably less than 0.7 times this thickness; in fact, if this latter ratio is exceeded, the residual thickness of the plastic material is too small to be able to validly absorb the stresses transmitted by the insert, so that in the long run, cracks appear; similarly, if this ratio is less than half, during tightening, part of the stresses are distributed in the head, which also becomes fragile;
  • a metal is used having a hardness coefficient between 45 and 50 HRC, preferably close to 48 to 50 HRC; indeed
  • the flat key designated by the general reference (1) shown in Figure 1 is a key substantially to scale, with openings: 22/24. It essentially consists of a handle (2) and two clamping heads, respectively (3) and (4) each having an opening (5) and (6).
  • the opening (5) (see Figure 3) is intended to receive a bolt or nut (7) of 22, while the opening (6) is intended to receive a nut, bolt or the like of 24.
  • the handle (2) and the heads (3,4) are made of polyarylamide loaded with 60% by weight of glass fibers, sold by SOLVET under the registered trademark "IXEF".
  • each of these openings (5,6) has a pentagonal shape, symmetrical with respect to the median axis (I, I ′) (see FIG. 3), and comprises a metal insert (10,11) embedded in a head (3,4).
  • These inserts (10,11) are made of 35 CD4 steel, with a hardness coefficient of 48 HRC.
  • inserts (10,11) have a general hexagonal shape, irregular, but also symmetrical with respect to the median axis (I, I ′) of the opening (5,6) (see Figures 2 and 3).
  • the metal insert (10,11) has the following characteristics: - opening L1: 32 mm - depth L2: 30 mm - length L3: 54 mm - width L4: 68 mm - alpha angle: 25 ° - beta angle: 30 ° - gamma angle: 27 °.
  • connections of the active walls (12, 13, 14) to each other are carried out by radii, not shown, of approximately one millimeter.
  • the main horizontal surfaces of the inserts (10,11) are sanded, striated or the like, so as to facilitate adhesion to the plastic during injection.
  • the inserts (10, 11) have, in the vicinity of the base (21), through orifices (22, 23, 24), for example two to four millimeters in diameter, through which, during the injection, the plastic material passes.
  • the thickness E2 of the characteristic insert (10,11) is at least equal to half and preferably close to 0.6 times the thickness E1 of the clamping head (3,4), at least at the level of the walls (12-15) concerned.
  • the main surface of the characteristic insert (10,11) represents approximately three-quarters of that of the clamping head (3,4) concerned.
  • the ratio (see FIG. 3), outside the opening (5), between the surface of the metal insert (10) and the surface of the clamping head (3) is between 75 and 80%.
  • the keys according to the invention are light, insulating.
  • no cracking or detachment of the insert in the clamping head is observed over the long term, thanks to the characteristic hexagonal shape of the insert and the surface ratio with the clamping head. .
  • these keys can be successfully used in industry or DIY, either in the form of flat keys, adjustable wrenches, socket wrenches, etc. .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Connection Of Plates (AREA)
  • Stringed Musical Instruments (AREA)
  • Percussive Tools And Related Accessories (AREA)
EP90420105A 1989-03-02 1990-02-27 Schraubenschlüssel aus Kunststoff mit metallischem Einsatz Expired - Lifetime EP0390705B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8902997 1989-03-02
FR8902997A FR2643844B1 (fr) 1989-03-02 1989-03-02 Cle de serrage perfectionnee en matiere plastique avec insert metallique

Publications (2)

Publication Number Publication Date
EP0390705A1 true EP0390705A1 (de) 1990-10-03
EP0390705B1 EP0390705B1 (de) 1993-10-20

Family

ID=9379469

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90420105A Expired - Lifetime EP0390705B1 (de) 1989-03-02 1990-02-27 Schraubenschlüssel aus Kunststoff mit metallischem Einsatz

Country Status (8)

Country Link
US (1) US5062328A (de)
EP (1) EP0390705B1 (de)
JP (1) JP2521730Y2 (de)
KR (1) KR960005139Y1 (de)
CA (1) CA2008956C (de)
DE (1) DE69003980T2 (de)
ES (1) ES2045866T3 (de)
FR (1) FR2643844B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2798087A1 (fr) * 1999-09-03 2001-03-09 Wu Li Tu Lin Manche d'outil composite
GB2364945A (en) * 2000-07-18 2002-02-13 Hsieh Chih Ching Light Weight Wrench
RU2679852C1 (ru) * 2017-10-24 2019-02-13 Акционерное общество "Государственный Рязанский приборный завод" Ключ гаечный двусторонний

Families Citing this family (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5271300A (en) * 1992-07-14 1993-12-21 Snap-On Tools Corporation Composite hand tool
CA2126042A1 (en) * 1993-10-18 1995-04-19 Paul M. Machmeier Composite plier/cutter tool with shear action cutter insert
CA2112279A1 (en) 1993-10-28 1995-04-29 Gregory A. Zurbuchen Composite ratchet wrench and method of making same
AT402545B (de) * 1994-11-08 1997-06-25 Wolf Helmut Absperrventil für kunststoff-rohrleitungen
US5713251A (en) * 1995-11-15 1998-02-03 Snap-On Technologies, Inc. Composite box wrench with ratchet module insert
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
US5934159A (en) * 1998-02-09 1999-08-10 Sig Combibloc, Inc. Opener for package closure
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)
GB2353751A (en) * 1999-09-03 2001-03-07 Lin Wu Li Tu Composite tool
US6408723B1 (en) 2000-07-28 2002-06-25 Snap-On Technologies, Inc. Insulating composite shaft tool with interchangeable heads and method of construction thereof
US6966242B2 (en) * 2003-01-27 2005-11-22 Picone John A Adjustable wrench with preset stops
US20060248989A1 (en) * 2005-05-06 2006-11-09 Duffey Joseph C Tool for removing toilet seat
US20070113710A1 (en) * 2005-11-18 2007-05-24 Chen Chia Y Ratchet wrench
US7237462B1 (en) * 2006-03-27 2007-07-03 Jia-Guann Liau Hand tool with a handle made by different material
DE102006062013A1 (de) * 2006-12-29 2008-07-03 Wera-Werk Hermann Werner Gmbh & Co. Kg Werkzeug, insbesondere Schraubwerkzeug
US7607372B2 (en) * 2007-05-16 2009-10-27 Proxene Tools Co., Ltd. Method for making a wrench
US20110174118A1 (en) * 2010-01-15 2011-07-21 Jie-Shing Peng Gear unit and molding method of the same and applied ratchet wheel wrench
US8484785B1 (en) * 2010-04-08 2013-07-16 Robert M. Kristiansen Combination handle locking and beverage container opener
TWI473686B (zh) * 2010-12-08 2015-02-21 Metal Ind Res & Dev Ct Open wrench and its manufacturing method
CN102554834B (zh) * 2010-12-13 2014-09-03 财团法人金属工业研究发展中心 开口扳手及其制造方法
US8459152B2 (en) * 2010-12-29 2013-06-11 Metal Industries Research & Development Centre Open-end wrench and method of manufacturing the same
TWI396605B (zh) * 2011-05-13 2013-05-21 Lin Tsung Te Ratchet wrench structure
US9200590B2 (en) * 2012-03-05 2015-12-01 GM Global Technology Operations LLC Assembly with composite fastener for attaching components with sealant and method of attaching same
DE202013102488U1 (de) 2013-06-11 2013-06-17 Kipp Verpachtungen E.K. Werkzeug zur schonenden Betätigung eines Schraubenkopfes
US9989154B2 (en) 2013-07-30 2018-06-05 Hayward Industries, Inc. Butterfly valve handle
US9695947B2 (en) 2013-07-30 2017-07-04 Hayward Industries, Inc. Handle insert for valve
DE202013104028U1 (de) * 2013-09-06 2014-12-08 Weidmüller Interface GmbH & Co. KG Montageschlüssel
US9586389B2 (en) * 2013-10-10 2017-03-07 BurnTables LLC Carbon fiber wrench assembly with insert
EP3116686A4 (de) * 2014-03-10 2017-11-15 Ridge Tool Company Austauschbare greifeinsätze für schraubenschlüssel
DE202014102948U1 (de) 2014-06-27 2015-09-30 Kipp Verpachtungen E.K. Schonaufsatz für einen Maulschlüssel und Maulschlüssel-Werkzeug
USD772664S1 (en) 2015-03-19 2016-11-29 Hubbell Incorporated Hand tool handle
US20160271787A1 (en) * 2015-03-19 2016-09-22 Hubbell Incorporated Double-ended hand tools
WO2019191655A1 (en) * 2018-03-30 2019-10-03 Milwaukee Electric Tool Corporation Pipe wrench
EP4192651A1 (de) 2020-08-04 2023-06-14 Milwaukee Electric Tool Corporation Ausziehbarer schraubenschlüssel
TWI802232B (zh) * 2021-03-04 2023-05-11 優鋼機械股份有限公司 手工具

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR926946A (fr) * 1945-05-15 1947-10-15 W Dan Bergman Ab Clé à écrous
FR955548A (de) * 1950-01-14
US2898793A (en) * 1957-08-28 1959-08-11 Fedeson Benjamin Disc socket wrench
US2909954A (en) * 1958-02-03 1959-10-27 Rhoads Stanley Plastic open end wrench
FR1393445A (fr) * 1964-02-10 1965-03-26 Le Moulage De Prec Clef de serrage à couple limité
FR1556391A (de) * 1967-12-29 1969-02-07
GB1251419A (de) * 1969-06-17 1971-10-27
GB2018179A (en) * 1978-01-30 1979-10-17 Courtaulds Ltd Spanner
WO1984004721A1 (en) * 1983-06-01 1984-12-06 Kohlbrat & Bunz Maschvertrieb Fibre reinforced plastic tool

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1314044A (en) * 1919-08-26 Wrench
JPS5993267A (ja) * 1982-11-17 1984-05-29 株式会社　バンザイ 作業用工具
JPS6368374A (ja) * 1986-09-09 1988-03-28 トツプ工業株式会社 スパナ
US4864898A (en) * 1988-05-26 1989-09-12 Tricinella Bruce E Combination pop-top can and bottle opener

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR955548A (de) * 1950-01-14
FR926946A (fr) * 1945-05-15 1947-10-15 W Dan Bergman Ab Clé à écrous
US2898793A (en) * 1957-08-28 1959-08-11 Fedeson Benjamin Disc socket wrench
US2909954A (en) * 1958-02-03 1959-10-27 Rhoads Stanley Plastic open end wrench
FR1393445A (fr) * 1964-02-10 1965-03-26 Le Moulage De Prec Clef de serrage à couple limité
FR1556391A (de) * 1967-12-29 1969-02-07
GB1251419A (de) * 1969-06-17 1971-10-27
GB2018179A (en) * 1978-01-30 1979-10-17 Courtaulds Ltd Spanner
WO1984004721A1 (en) * 1983-06-01 1984-12-06 Kohlbrat & Bunz Maschvertrieb Fibre reinforced plastic tool

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2798087A1 (fr) * 1999-09-03 2001-03-09 Wu Li Tu Lin Manche d'outil composite
GB2364945A (en) * 2000-07-18 2002-02-13 Hsieh Chih Ching Light Weight Wrench
GB2364945B (en) * 2000-07-18 2003-11-05 Chih-Ching Hsieh Light weight wrench
RU2679852C1 (ru) * 2017-10-24 2019-02-13 Акционерное общество "Государственный Рязанский приборный завод" Ключ гаечный двусторонний

Also Published As

Publication number Publication date
KR960005139Y1 (ko) 1996-06-22
CA2008956A1 (fr) 1990-09-02
CA2008956C (fr) 1999-04-13
FR2643844A1 (fr) 1990-09-07
EP0390705B1 (de) 1993-10-20
JP2521730Y2 (ja) 1997-01-08
DE69003980D1 (de) 1993-11-25
FR2643844B1 (fr) 1993-10-15
US5062328A (en) 1991-11-05
ES2045866T3 (es) 1994-01-16
DE69003980T2 (de) 1994-02-24
KR900016794U (ko) 1990-10-05
JPH02143167U (de) 1990-12-05

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