WO1984004721A1 - Outil de matiere plastique renforcee par des fibres - Google Patents

Outil de matiere plastique renforcee par des fibres Download PDF

Info

Publication number
WO1984004721A1
WO1984004721A1 PCT/AT1984/000019 AT8400019W WO8404721A1 WO 1984004721 A1 WO1984004721 A1 WO 1984004721A1 AT 8400019 W AT8400019 W AT 8400019W WO 8404721 A1 WO8404721 A1 WO 8404721A1
Authority
WO
WIPO (PCT)
Prior art keywords
tool
reinforcing element
contact area
flange
pressing
Prior art date
Application number
PCT/AT1984/000019
Other languages
German (de)
English (en)
Inventor
Peter Kohlbrat
Karoly Toempe
Original Assignee
Kohlbrat & Bunz Maschvertrieb
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 Kohlbrat & Bunz Maschvertrieb filed Critical Kohlbrat & Bunz Maschvertrieb
Publication of WO1984004721A1 publication Critical patent/WO1984004721A1/fr

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
    • 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
    • B25B13/00—Spanners; Wrenches
    • B25B13/02—Spanners; Wrenches with rigid jaws
    • B25B13/06—Spanners; Wrenches with rigid jaws of socket type

Definitions

  • the invention relates to a tool made of fiber-reinforced plastic, with a handle for introducing a torque onto a body having a turning attachment, in which the area of the tool having the contact surface is provided with a metallic reinforcing element.
  • Such tools have hitherto been hot forged from tool steel, usually chrome vanadium steel.
  • the handle is also made of metal and is made in one piece.
  • plastic it is also known to cover the handle with plastic or to manufacture it from plastic and to connect it to the tool.
  • the replacement of metal with other materials, especially plastic, which has been common in many other products recently, is not readily possible for torque-stressed tools, since in particular the strength and the deformation resistance of the replacement materials are too low, other properties such as their ductility or brittleness also are high.
  • Standardized tightening torques of 35 to 40 Nm for a wrench size of 13 mm or from 40 to 45 Nm for a wrench size of 16 mm cannot absorb fiber-reinforced plastics, or only with an oversized shape.
  • plastics such as low weight, low thermal conductivity, pleasant handling properties, etc.
  • attempts have been made (GB-PS 1,251,419 and 2,018,179) to find a metallic one in the tool opening of wrenches
  • the U-shaped or ring-shaped reinforcement element or the like is on its outer binding surface with projections or the like. provided, and must therefore already in the manufacture of the tool
  • the invention has now set itself the task of creating tools of the type mentioned at the outset, in which the reinforcing element can be attached to the tool blank after it has been produced, whereby a substantial simplification of the manufacture can be achieved, so that a general requirement. ending area is opened.
  • the reinforcing element is of double-walled design and surrounds the contact area of the tool on two sides, a flange extending from at least one of the two walls essentially perpendicular to the axis of rotation, which abuts the contact area on the end face.
  • OMP Levers or handles of such devices removable starter handles on fuel-operated devices, such as lawn mowers, chainsaws, boat engines, etc., in which, for example, the receiving opening for the connecting part of the device is designed as a socket wrench for loosening or inserting the spark plugs.
  • the reinforcing element is designed as a double-walled sleeve which surrounds the plastic web on three sides.
  • the edge area of the outer wall of the reinforcement element is pressed into a tapered section of a shoulder of the contact area.
  • the reinforcement element can also be attached in a different manner. It could be glued in or applied by means of ultrasound with local softening of the plastic. Good results could also be achieved with a pressing which was parallel with respect to the axis of rotation and which led to subsequent cold compression with an additional increase in the strength of the plant area.
  • a double-walled sleeve which is deep-drawn from a sheet of 0.3 mm thick can achieve a 40-50% increase in the maximum tightening torque that can be achieved with unreinforced tools made of fiber-reinforced plastics, so that this can be achieved via the input mentioned values.
  • unreinforced ring wrenches of customary dimensioning made of 6-polyamide with a short glass fiber content of 25-35% maximum tightening torques of 30 Nm for a wrench size of 13 mm and 40 Nm for a wrench size of 15 mm can be achieved.
  • the sheet metal reinforcing element stiffened over the front flange increases the tightening torques to 45 to 55 Nn for the wrench size of 13 mm and to over 60 Nm the door
  • OMP Width across flats of 16 mm which can normally never be reached by hand without additional tools or lever arm extensions. Almost similar values were obtained in the production of a ring closure from a polyacetal.
  • a device for pressing the reinforcing element onto the tool blank, a device is proposed in particular which has a pressure disc against which the end flange of the reinforcing element can be placed. Press jaws are articulated over the circumference of the thrust washer. • the pressing edges of which lie against the free edge region of the outer wall of the reinforcing element opposite the end flange. A plunger axially displaceable relative to the pressure disk acts on the pressing jaws, for which purpose guide surfaces inclined to the displacement direction are formed on the plunger and / or on the pressing jaws.
  • each press jaw is designed as a two-armed lever, the press edge a end of the first and the guide surface being formed at the end of the two lever arm, the stamp approaching the pressure disk spreading the second lever arms of the press jaws.
  • the deep-drawn reinforcing element is therefore articulated with its end flange on the pressure disk during assembly, the pressing edges holding it circumferentially, and then pushed onto the plastic web or its shoulder.
  • the subsequent slight approach of the stamp to the pressure disk spreads the second lever arms of the press jaws apart, as a result of which their press edges arranged on the first lever arms radially press the edge region of the outer wall onto the plastic web or into the taper of the shoulder.
  • FIG. 1 and 2 show oblique views of two tools of conventional design according to the invention
  • FIG. 3 shows a longitudinal section through a socket wrench
  • FIG. 4 shows a partial longitudinal section through a pressing device according to the invention
  • FIG. 5 shows a section along the line VV the Fig.4.
  • FIG. 1 representing a simple wrench
  • FIG. 1 a simple ring spanner
  • FIG. 3 a socket wrench
  • Each of these tools 1 consists of plastic, in particular a short fiber reinforced polyamide, for example 6-polyamide or 6,6-polyamide, and is provided with a handle 2 made in one piece.
  • the handle 2 can also be part of an object made of plastic, the one-piece molding of the
  • Tool 1 made of the same plastic and the subsequent attachment of a reinforcing element 6 offer the possibility of assigning such a tool in a simple manner to objects on which the arrangement or design of a tool was previously impossible or only possible with difficulty.
  • the tool 1 has a tool opening 3 which, according to FIG. 1, is partially open radially, and is circumferentially closed according to FIGS.
  • the tool opening 3 is delimited by a web 4, the system surfaces 5 for detecting hexagonal, rotatable bodies, such as nuts, machine screws, etc.
  • O delimiting plastic web 4 is equipped with a double-walled reinforcing element 6, the inner wall 20 of which is an insert for the tool opening 3 and the outer wall 8 of which is an open (FIG. 1) or closed ring, at least one end flange 19 being provided is.
  • the two walls 8, 20 connected via the common flange form a laterally open, and according to FIGS. 4 and 5 a closed, double-walled sleeve.
  • a circular disk is punched out of sheet metal and deep-drawn to the desired shape.
  • the plastic web 4 delimiting the tool opening 3 is provided with an inwardly recessed shoulder 7, which has a tapered, groove-like at its transition to the plastic web 4
  • Section 18 has.
  • This section 18 serves for the axial fixation of the outer wall 8.
  • the press-on device shown in FIG. 4 which has a thrust washer 9 with a projecting mandrel 21, can be used to mount the reinforcing element 6 in this case the front flange 19 of the outer wall 8 is created.
  • the reinforcing element 6 is held by several pressing jaws 11, which attack on its edge region opposite the front flange 19 with adapted bent pressing edges 12.
  • the pressing jaws 11 represent two-armed levers, on the first lever arms of which the pressing edges 12 are provided at the end, and can be pivoted about axes 17 which are arranged on supporting arms 10 which project laterally from the pressure disk 9. With the thrust washer 9 is in
  • a pressure-actuated punch 15 is connected, a compression spring 16 being inserted therebetween.
  • the punch 15 has an end surface converging in the pressing direction, which acts as guide surfaces 14 with the guide surfaces, which are also OMPI 13 forming end faces of the second lever arms of each pressing jaw 11 cooperate. If the reinforcing element 6 resting on the pressure plate 9 is placed on the shoulder 7 of the plastic web 4, the plunger 15 is brought closer to the pressure plate 9 by compression of the pressure spring 16.
  • the guide surfaces 14 spread the second lever arms of the pressing jaws 12, whose pressing edges 11 formed on the first lever arms between the edge region of the outer wall 8 of the reinforcing element 6 opposite the flange 19 into the tapered, groove-like section 18 between press in the shoulder 7 and the plastic web 4 from all sides.
  • the reinforcing element 6 is fixed axially on the tool 1, the pressed-in edge section of the outer wall 8 being hardly radially stressed when the tool 1 is used, so that an expansion of the pressed-in edge section leads to the loss of the reinforcing element 6 and to the breakage of the plastic tool 1 could lead to, is completely excluded.
  • the reinforcing element 6 can, as shown in FIGS. 2 and 3, also be in two parts, i.e. have an outer wall 8 and an inner wall 20 separate therefrom, at least one of which is provided with a flange 19.
  • the press-on device can be used to mount the reinforcing element 6, since the inner wall 20 forming the insert is placed on the mandrel 21 and pressed into the tool opening 3 in the direction of arrow A, and which ver with the flange 19 - See outer wall 8 are used as described in the Aufpreßvor ⁇ direction.
  • the inner wall 20 can have a further flange extending towards the bottom.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

L'outil est à même de transmettre un moment sur un corps mobile autour d'un axe, et dans le cas d'une clé à écrou les surfaces de contact sont formées d'un élément de renforcement (6) à double paroi qui présente sur au moins une paroi une collerette (19) perpendiculaire à l'axe. Dans le cas de clés polygonales et de clés à douilles, l'élément de renforcement (6) a la forme d'une douille à double paroi et embrasse la nervure (4) bordant l'ouverture (3) de l'outil (1), les parois intérieures (20) et extérieures (8) étant réunies par la collerette (19) frontale adjacente à la nervure. Cet élément de renforcement (6) peut être placé postérieurement sur l'outil et cela permet la réalisation d'outils utilisables sur des pièces quelconques en matière plastique, par exemple sur des accessoires de machines.
PCT/AT1984/000019 1983-06-01 1984-05-17 Outil de matiere plastique renforcee par des fibres WO1984004721A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT0200383A AT383298B (de) 1983-06-01 1983-06-01 Werkzeug aus faserverstaerktem kunststoff

Publications (1)

Publication Number Publication Date
WO1984004721A1 true WO1984004721A1 (fr) 1984-12-06

Family

ID=3525734

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AT1984/000019 WO1984004721A1 (fr) 1983-06-01 1984-05-17 Outil de matiere plastique renforcee par des fibres

Country Status (4)

Country Link
EP (1) EP0147421A1 (fr)
AT (1) AT383298B (fr)
IT (2) IT1179374B (fr)
WO (1) WO1984004721A1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2593425A1 (fr) * 1986-01-28 1987-07-31 Top Kogyo Co Ltd Clef de serrage en matiere plastique
FR2643844A1 (fr) * 1989-03-02 1990-09-07 Demurger & Cie Ets Cle de serrage perfectionnee en matiere plastique avec insert metallique
EP0565919A1 (fr) * 1992-04-17 1993-10-20 Wagner, Paul-Heinz Douille pour un outil de vissage motorisé
US5572912A (en) * 1995-05-05 1996-11-12 Creative Designs In Woodworking And Metal Anti-crimp wrench for a garden hose with a knurled coupling
EP0747179A1 (fr) * 1995-06-05 1996-12-11 Snap-on Technologies, Inc. Outil douille composite
EP0861139A1 (fr) * 1996-08-16 1998-09-02 Snap-on Technologies, Inc. Douille composite avec inserts doubles
EP1047529A1 (fr) * 1998-01-12 2000-11-02 Snap-On Tools Company Douille composite comportant deux pieces inserees et un element de renforcement annulaire
EP2316616A1 (fr) * 2009-10-30 2011-05-04 Jen-Chu Tsai Ensemble formant manchon entraînant une attache
WO2014020986A1 (fr) * 2012-08-01 2014-02-06 水戸工機株式会社 Douilles pour clés
EP2727684A3 (fr) * 2012-11-05 2016-12-14 Li-Yuan Sumg Douille avec une résistance renforcée
WO2017097985A1 (fr) * 2015-12-09 2017-06-15 Wegmann Automotive Gmbh & Co. Kg Outil de montage pour poids d'équilibrage

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007045352B4 (de) * 2007-09-22 2009-06-10 Gedore-Werkzeugfabrik Otto Dowidat Kg Steckschlüsseleinsatz

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2909954A (en) * 1958-02-03 1959-10-27 Rhoads Stanley Plastic open end wrench
FR1556391A (fr) * 1967-12-29 1969-02-07
FR2004654A1 (fr) * 1968-03-25 1969-11-28 American Flange Manufac
GB1251419A (fr) * 1969-06-17 1971-10-27
GB2018179A (en) * 1978-01-30 1979-10-17 Courtaulds Ltd Spanner

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2909954A (en) * 1958-02-03 1959-10-27 Rhoads Stanley Plastic open end wrench
FR1556391A (fr) * 1967-12-29 1969-02-07
FR2004654A1 (fr) * 1968-03-25 1969-11-28 American Flange Manufac
GB1251419A (fr) * 1969-06-17 1971-10-27
GB2018179A (en) * 1978-01-30 1979-10-17 Courtaulds Ltd Spanner

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2593425A1 (fr) * 1986-01-28 1987-07-31 Top Kogyo Co Ltd Clef de serrage en matiere plastique
FR2643844A1 (fr) * 1989-03-02 1990-09-07 Demurger & Cie Ets Cle de serrage perfectionnee en matiere plastique avec insert metallique
EP0390705A1 (fr) * 1989-03-02 1990-10-03 Demurger Et Cie Clé de serrage perfectionnée en matière plastique avec insert métallique
US5062328A (en) * 1989-03-02 1991-11-05 Demurger Et Cie Plastic wrench with metal insert
EP0565919A1 (fr) * 1992-04-17 1993-10-20 Wagner, Paul-Heinz Douille pour un outil de vissage motorisé
DE4212875A1 (de) * 1992-04-17 1993-10-21 Wagner Paul Heinz Nuß für ein drehend angetriebenes Verschraubungsgerät
DE4212875C2 (de) * 1992-04-17 1998-04-09 Wagner Paul Heinz Nuß für ein drehend angetriebenes Verschraubungsgerät
US5572912A (en) * 1995-05-05 1996-11-12 Creative Designs In Woodworking And Metal Anti-crimp wrench for a garden hose with a knurled coupling
EP0747179A1 (fr) * 1995-06-05 1996-12-11 Snap-on Technologies, Inc. Outil douille composite
EP0861139A4 (fr) * 1996-08-16 2003-05-21 Snap On Tech Inc Douille composite avec inserts doubles
EP0861139A1 (fr) * 1996-08-16 1998-09-02 Snap-on Technologies, Inc. Douille composite avec inserts doubles
EP1047529A1 (fr) * 1998-01-12 2000-11-02 Snap-On Tools Company Douille composite comportant deux pieces inserees et un element de renforcement annulaire
EP1047529A4 (fr) * 1998-01-12 2001-09-26 Snap On Tools Co Douille composite comportant deux pieces inserees et un element de renforcement annulaire
EP2316616A1 (fr) * 2009-10-30 2011-05-04 Jen-Chu Tsai Ensemble formant manchon entraînant une attache
AU2010236014B2 (en) * 2009-10-30 2013-08-15 Jen-Chu Tsai Fastener-driving sleeve assembly
US8516930B2 (en) 2009-10-30 2013-08-27 Jen-Chu TSAI Fastener-driving sleeve assembly
WO2014020986A1 (fr) * 2012-08-01 2014-02-06 水戸工機株式会社 Douilles pour clés
JP2014030855A (ja) * 2012-08-01 2014-02-20 Mito Koki Kk レンチ用ソケット
EP2727684A3 (fr) * 2012-11-05 2016-12-14 Li-Yuan Sumg Douille avec une résistance renforcée
WO2017097985A1 (fr) * 2015-12-09 2017-06-15 Wegmann Automotive Gmbh & Co. Kg Outil de montage pour poids d'équilibrage

Also Published As

Publication number Publication date
EP0147421A1 (fr) 1985-07-10
ATA200383A (de) 1986-11-15
AT383298B (de) 1987-06-10
IT8448217A0 (it) 1984-05-18
IT1179374B (it) 1987-09-16
IT8435823V0 (it) 1984-05-18

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