EP0037673B1 - Einheitlicher Werkzeugmechanismus - Google Patents

Einheitlicher Werkzeugmechanismus Download PDF

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Publication number
EP0037673B1
EP0037673B1 EP81301248A EP81301248A EP0037673B1 EP 0037673 B1 EP0037673 B1 EP 0037673B1 EP 81301248 A EP81301248 A EP 81301248A EP 81301248 A EP81301248 A EP 81301248A EP 0037673 B1 EP0037673 B1 EP 0037673B1
Authority
EP
European Patent Office
Prior art keywords
head
arms
beams
tool
closure
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
Application number
EP81301248A
Other languages
English (en)
French (fr)
Other versions
EP0037673A1 (de
Inventor
Ronald Gilbert Sergeant
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.)
TE Connectivity Corp
Original Assignee
AMP Inc
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 AMP Inc filed Critical AMP Inc
Priority to AT81301248T priority Critical patent/ATE5861T1/de
Publication of EP0037673A1 publication Critical patent/EP0037673A1/de
Application granted granted Critical
Publication of EP0037673B1 publication Critical patent/EP0037673B1/de
Expired 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
    • B25B9/00—Hand-held gripping tools other than those covered by group B25B7/00
    • B25B9/02—Hand-held gripping tools other than those covered by group B25B7/00 without sliding or pivotal connections, e.g. tweezers, onepiece tongs

Definitions

  • This invention relates to a tool having a pair of arms secured at a head for pivotal movement between open and closed conditions, and a resilient member between the arms arranged to bias them towards an open condition.
  • Such tools are commonly used as hand tools or pliers for applying force or a cutting action to a work piece, and are also used as mechanisms in assemblies.
  • DE-A-2419818 describes a tool having a pair of arms secured at a head for pivotal movement between open and closed conditions and a resilient means between the arms arranged to bias them towards an open condition in which the head, the arms and the resilient means comprise a unitary structure formed in one piece from resilient material, the arms extending from the head in divergent manner and the resilient means comprising a pair of beams extending from respective portions of the arms spaced from the head, inwardly between the arms towards the head to a second head, the beams being adapted, on movement of the arms together, to engage along their lengths from the second head portion.
  • a tool as described above is characterised in that, the first and second heads comprise jaw surfaces arranged to be driven together for engagement with a work piece by movement together of the arms and the beams (16, 18) are arranged to engage progressively along their lengths from the second head (4) as the arms (12, 14) are moved together.
  • the tool is suitably formed from a resilient plastics material having a high yield strength.
  • the tool of Figures 1 to 4 comprises a first head 2 defining a lower jaw surface 6 and a second head 4 defining an upper jaw surface 7 spaced below surface 6.
  • the surface 6 is defined at the roof of a cavity in the first head 2 between side walls 8, 10 adapted slidably to receive head 4 between them.
  • a pair of arms 12, 14 extend from the head 2 downwardly on opposite sides of the cavity in divergent manner. Initial portions of the arms 12, 14 are of progressively decreasing thickness towards lower thickened end portions 12A, 14A defining handles which can be gripped in a hand in conventional manner.
  • the second head 4 is supported from the lower ends of the arms 12, 14 by a pair of arcuate resilient beams 16, 18, convex towards each other and converging upwardly with upper end portions 16B, 18B closely adjacent and integral with the head 4.
  • the heads 2, 4, the arms 12, 14, and the beams 16, 18 are integrally formed as a unitary structure, suitably by moulding or by extrusion from a resilient plastics material having a high yield strength. It will be understood that a number of tools may be formed from a single moulding or extrusion having a cross section corresponding to the elevation of Figure 1, and individual tools severed transversely of the length of moulding or extrusion.
  • closure of the handle portions 12A, 14A together effects pivotal movement about the head 2 by bending of the thinner portions of the arms 12, 14.
  • the arcuate beams 16, 18 progressively engage at their upper portions 16B, 18B and are supported against each other as seen in Figure 2, effectively to increase their length in the direction of arrow 20 and drive the head 4 into the cavity of head 2 towards jaw surface 6.
  • the sides 8, 10 of the cavity and the engaged portions of beams 16, 18 resist lateral displacement of the head 4 and maintain its orientation.
  • a workpiece may be engaged between the jaw faces 6, 7 and subject to compression.
  • the beams 16, 18 are correspondingly subject to compression and the arms 12, 14 to tension. Resilience of the beams and the arms serves to open the tool when the handles are released.
  • the head 4 at its underside between the beams 16, 18 is formed with a cylindrical socket 22 extending through the head 4 transversely of its line of action.
  • the socket has a restricted opening between the beams 16, 18 and receives a complementary cylindrical head 26A of an upright rail 26 which extends downwardly between the beams 16, 18 and is stiffened by a transverse flange 28 at a rear side of the tool.
  • the beams 16, 18 are flattened against the rail 26 as the handles 12, 14 are closed, and the rails serves to support the beams.
  • the head 4 is formed at its rear side with an upwardly directed extension 4A which extends slidably through a recess 2A in a rear side of the head 2.
  • the extension 4A at its upper end is formed with a further head portion 4B presenting a lower jaw face 4C spaced from and opposed to a jaw face 2B presented by the upper side of head 2.
  • a workpiece may be gripped between jaw surfaces 6 and 7 on closure of the tool or between surfaces 4C and 2B on opening of the tool handles.
  • the head 2 is formed with an upright bore in which the lower, open end of a cylinder 30 is secured.
  • An upright rod 36 is secured to the head 4 and extends coaxially through the lower end of the cylinder 30.
  • a washer type piston 38 is secured at the upper end of the rod 36, and the upper closed end 32 of the cylinder is formed with an outlet 34.
  • Actuation of the tool causes reciprocation of the piston 38 in the cylinder and alternate compression and suction in the cylinder and its outlet 34, the resilience of the beams 16, 18 effecting opening of the tool and downward movement of the piston 38.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Claims (7)

1. Werkzeug mit einem Paar von Armen (12, 14), die an einem Kopf befestigt sind, der eine Schwenkbewegung zwischen einem geöffneten Zustand und einem geschlossenen Zustand ermöglicht, und mit einer federnd nachgiebigen Einrichtung (16, 18) zwischen den Armen (12, 14) zum Vorspannen derselben in Richtung auf einen geöffneten Zustand, wobei der Kopf (2), die Arme (12, 14) und die federnd nachgiebige Einrichtung (16, 18) eine einheitliche Strucktur aufweisen, die in einem Stück aus federnd nachgiebigem Material gebildet ist, wobei die Arme (12, 14) sich in 'divergierender Weise von dem Kopf (2) wegerstrecken und die federnd nachgiebige Einrichtung (16, 18) ein Paar von Trägern (16, 18) besitzt, die sich von jeweiligen von dem Kopf (2) beabstandeten Bereichen der Arme (12, 14) nach innen zwischen die Arme (12, 14) in Richtung auf den Kopf (2) zu einem zweiten Kopf (4) erstrecken, und wobei die Träger (16, 18) derart ausgebildet sind, daß sie bei einer Zusammenbewegung der Arme (12, 14) von dem zweiten Kopf (4) ausgehend entlang ihrer Längen aneinander angreifen, dadurch gekennzeichnet, daß der erste und der zweite Kopf (2, 4) Klemmbackenflächen (6 bzw. 7) aufweisen, die zum Angreifen an einem Werkstück dadurch zusammendrängbar sind, daß die Arme (12, 14) zusammenbewegt werden, und daß die Träger (16, 18) beim Zusammenbewegen der Arme (12, 14) entlang ihrer Längen ausgehend von dem zweiten Kopf (4) zunehmend aneinander angreifen können.
2. Werkzeug nach Anspruch 1, dadurch gekennzeichnet, daß die Träger (16, 18) bogenförmig konvex von ihren jeweiligen (12, 14) weg ausgebildet sind.
3. Werkzeug nach Anspruch 1 oder Anspruch 2, dadurch gekennzeichnet, daß die Arme (12, 14) zur Erzielung der Schwenkwirkung beim Zusammenschließen der Arme (12, 14) durch Biegen der Arme (12, 14) in bezug auf den Kopf (2) flexibel sind.
4. Werkzeug nach einem der vorausgehenden Ansprüche, dadurch gekennzeichnet, daß sich die Klemmbackenfläche (6) des ersten Kopfes (2) in einer Ausnehmung (8, 10) befindet, die in dem ersten Kopf (2) zwischen den Armen (12, 14) ausgebildet ist und in der der zweite Kopf (4) beim Schließen der Arme (12, 14) gleitend aufnehmbar ist.
5. Werkzeug nach einem der vorausgehenden Ansprüche, dadurch gekennzeichnet, daß der zweite Kopf (4) zwischen den Trägern (16, 18) mit einer Ausnehmung (22) ausgebildet ist, die einen verengten unteren Eingang zwischen den Trägern (16, 18) aufweist, und daß eine Stützschiene (26) mit einem vergrößerten Kopfbereich (26A) in die Ausnehmung (22) eingreift, wobei sich die Schiene (26) zwischen den Trägern (16, 18) erstreckt derart, daß beim Zusammenschließen der Arme (12, 14) die Träger (16, 18) sich zunehmend gegen gegenüberliegende Seiten der Schiene (26) legen und flachdrücken.
6. Werkzeug nach Anspruch 4, dadurch gekennzeichnet, daß der zweite Kopf (4) mit einer Verlängerung (4A) ausgebildet ist, die den ersten Kopf (2) verschiebbar überlappt und mit einem dritten Kopfbereich 4B ausgebildet ist, der in einem Abstand von dem ersten Kopf (2) auf der von dem zweiten Kopf (4) entfernten Seite angeordnet ist.
7. Werkzeug nach Anspruch 4, dadurch gekennzeichnet, daß der zweite Kopf (4) mit einem Fortsatz (36) ausgebildet ist, der durch eine Öffnung (30) in dem ersten Kopf (2) hindurchragt.
EP81301248A 1980-04-03 1981-03-24 Einheitlicher Werkzeugmechanismus Expired EP0037673B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81301248T ATE5861T1 (de) 1980-04-03 1981-03-24 Einheitlicher werkzeugmechanismus.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13703580A 1980-04-03 1980-04-03
US137035 1980-04-03

Publications (2)

Publication Number Publication Date
EP0037673A1 EP0037673A1 (de) 1981-10-14
EP0037673B1 true EP0037673B1 (de) 1984-01-18

Family

ID=22475530

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81301248A Expired EP0037673B1 (de) 1980-04-03 1981-03-24 Einheitlicher Werkzeugmechanismus

Country Status (12)

Country Link
EP (1) EP0037673B1 (de)
JP (1) JPS56152586A (de)
AR (1) AR224190A1 (de)
AT (1) ATE5861T1 (de)
AU (1) AU539722B2 (de)
BR (1) BR8101947A (de)
CA (1) CA1147582A (de)
DE (1) DE3161923D1 (de)
ES (1) ES267154Y (de)
HK (1) HK26787A (de)
MX (1) MX153247A (de)
YU (1) YU85681A (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3166322B2 (ja) * 1992-06-15 2001-05-14 ソニー株式会社 再生方法、再生装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2430794A (en) * 1947-11-11 Safety shears
GB1234375A (de) * 1968-08-15 1971-06-03

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1427397A (en) * 1973-04-24 1976-03-10 Ici Ltd Forceps

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2430794A (en) * 1947-11-11 Safety shears
GB1234375A (de) * 1968-08-15 1971-06-03

Also Published As

Publication number Publication date
EP0037673A1 (de) 1981-10-14
BR8101947A (pt) 1981-10-06
JPS64191B2 (de) 1989-01-05
ATE5861T1 (de) 1984-02-15
YU85681A (en) 1983-06-30
CA1147582A (en) 1983-06-07
MX153247A (es) 1986-09-02
ES267154Y (es) 1984-05-01
DE3161923D1 (en) 1984-02-23
HK26787A (en) 1987-04-10
JPS56152586A (en) 1981-11-26
AU6829381A (en) 1981-10-08
AR224190A1 (es) 1981-10-30
AU539722B2 (en) 1984-10-11
ES267154U (es) 1983-11-01

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