WO1993009917A1 - Outil de prehension - Google Patents

Outil de prehension Download PDF

Info

Publication number
WO1993009917A1
WO1993009917A1 PCT/SE1992/000777 SE9200777W WO9309917A1 WO 1993009917 A1 WO1993009917 A1 WO 1993009917A1 SE 9200777 W SE9200777 W SE 9200777W WO 9309917 A1 WO9309917 A1 WO 9309917A1
Authority
WO
WIPO (PCT)
Prior art keywords
plunger
grip members
handle portion
grip
gripping jaws
Prior art date
Application number
PCT/SE1992/000777
Other languages
English (en)
Inventor
Olle Wolkert
Original Assignee
Olle Wolkert
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 Olle Wolkert filed Critical Olle Wolkert
Publication of WO1993009917A1 publication Critical patent/WO1993009917A1/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
    • B25B9/00—Hand-held gripping tools other than those covered by group B25B7/00

Definitions

  • the present invention relates to a hand manoevered gripping tool which can be used to pick up, transfer, assemble etc, small objects typically having a characteristic dimension of one or more millimeters, for example small nuts.
  • a gripping tool of this type which can be likened to a type of tweezers, comprises two manoeverable jaws designed to grip and hold the object.
  • the objects of the invention are to provide a tool of the abovementioned type which does not require the manual application of a gripping force once the object has been gripped, in which the tool is small and easily handled so that all manipulation can be achieved single-handedly without the need for a change of grip, and additionally which is easily adjusted to the sizes of different objects in the appropriate size class.
  • Fig. 1 is a schematic, perspective side view of a gripping instrument in accordance with an embodiment of the invention
  • Fig. 2 is a view of the same kind as Fig. 1 but illustrating how the tool can be held in one hand and rotated in conjunction with the gripping or handling of a small object;
  • Fig. 3 is a schematic side view, partly in section, of the tool of Figs. 1 and 2 with the grip members maximally withdrawn into the handle portion of the tool;
  • Fig. 4 is a similar view to Fig. 3 but with the grip members projecting, although not entirely, from the handle portion.
  • the tool depicted in Figs. 1 - 4 comprises an essentially cylindrical, tube-shaped handle portion 1 with a generally rectangular cross-sectioned internal chamber extending therethrough; a plunger 3 which extends through the handle portion, projects on either side thereof and is provided at its top with a head 5 and at its bottom with a stop member 7; and two grip members 9, 10 projecting from the interior chamber in the handle portion on respective sides of the lower end portion of the plunger 3 and its associated stop member 7.
  • the handle portion typically has an outer diameter between about 4 and 10 mm, preferably between about 5 and 7 mm, so that it can be easily gripped and handled in the desired fashion as illustrated in Fig. 2.
  • the handle portion can typically have a length, i.e. height, of about 5 - 6 cm so that the head of the plunger can also be easily manoevered.
  • the handle portion is fluted or textured in. some other way in order to give a good grip.
  • the plunger 3 is in the form of a straight shaft with a rectangular cross-section.
  • the opposed narrow longitudinal sides of the plunger are guided in corresponding tracks within the handle portion.
  • the broad sides of the plunger lie some distance from the interior of the handle portion so that there is room for the grip members in the intermediate spaces.
  • the lower end of the plunger is rounded off and threaded and threads into the centre of stop means 7. The thread connection is such that rotation can bring the location of the stop member further up or further down on the plunger.
  • the stop member has a cylindrical upper portion 13 and a conically tapered lower portion 14 having a small planar stop surface 15.
  • a longitudinally extending central passage 17 is disposed in the upper part of the plunger, through which a cross- pin 19 extends, the cross-pin being firmly secured in the handle portion.
  • the plunger can be displaced relative to the handle portion between the two end-positions shown in Figs. 3 and 4.
  • the grip members 9, 10 are formed from a single continuous piece of thin leaf-spring material which is folded in the middle to define a largely U-shape configuration.
  • the actually bent part 21 passes through a second longitudinally extending central passage 23 in the plunger 3.
  • the bent part is flanked on either side by a straight part 25, 26 leading to an outwardly diverging straight part 27, 28 which cooperates with the edge area of the opening at the bottom of the handle portion in order to urge the end portions of the grip members together and thereby the gripping jaws when the diverging parts are withdrawn into the handle portion.
  • the end portions of the grip members terminate with inwardly converging, straight end parts 29, 30 which conveniently have an inclination adapted to the inclination of the tapered end portion 14 of the stop member.
  • the grip members have generally outwardly bent parts 31, 32 intermediate the diverging and converging parts.
  • the resulting configuration of the end portions of the grip members provides very good flexibility and resilience which allows the guage of the grip to be simply adapted to the breadth of the gripped object.
  • the end portions conform to the stop member whose dimensions therefore do not need to be kept so small that construction difficulties arise despite that the tool generally speaking has very small dimensions.
  • the plunger 3 is kept depressed while the handle portion is displaced upwardly.
  • the grip members follow upwardly, the gripping aws thereby sliding up over the sides of the object. In this way, interference of any nearby objects by the gripping jaws as a consequence of release is avoided.
  • This upward movement of the grip -members is limited in each case by contact of the bent portion 21 with the upper margin of the passage 23. Due to their spring action, the grip members move apart with continued upward movement of the handle portion 1, when the diverging portions 27, 28 run out from the handle portion.
  • the tool according to the invention can be simply held in one hand and handled in the necessary fashion (including depressing of the plunger, rotation of the handle portion and displacement of the handle portion relative to the plunger) without the initial grip needing to be changed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manipulator (AREA)
  • Scissors And Nippers (AREA)

Abstract

Un outil de préhension destiné à des petits objets comporte deux mâchoires de préhension montées dans un manche tubulaire suffisamment petit pour qu'on le saisisse et le man÷uvre entre les doigts et le pouce d'une seule main. Les extrémités de deux membres de préhension en forme de ressort à lame (9, 10) sortent du manche (1) et définissent des mâchoires de préhension. Dans certaines limites, ces membres de préhension se déplacent longitudinalement vers l'intérieur ou l'extérieur du manche et sont séparés par effet de ressort. Ils comportent des sections divergentes qui coopèrent avec le manche de manière que les mâchoires de préhension présentent un écard maximum lorsqu'ils sont déployés et minimum quand ils sont rétractés. Un piston plongeur (3) muni d'une tête (5) s'étend coulissant à l'intérieur du manche (1) jusqu'à ressortir au-delà des extrémités des membres de préhension (9, 10). Ces derniers sont reliés au piston plongeur mais peuvent aussi se déplacer par rapport à lui dans certaines limites, et dans le même sens. L'extrémité du plongeur placée entre les mâchoires de préhension comporte un butoir réglable (7) qui entre en contact avec le bord supérieur d'un objet à saisir.
PCT/SE1992/000777 1991-11-12 1992-11-11 Outil de prehension WO1993009917A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9103324A SE469063B (sv) 1991-11-12 1991-11-12 Handmanoevrerat plockverktyg
SE9103324-1 1991-11-12

Publications (1)

Publication Number Publication Date
WO1993009917A1 true WO1993009917A1 (fr) 1993-05-27

Family

ID=20384293

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1992/000777 WO1993009917A1 (fr) 1991-11-12 1992-11-11 Outil de prehension

Country Status (3)

Country Link
AU (1) AU2959492A (fr)
SE (1) SE469063B (fr)
WO (1) WO1993009917A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5407243A (en) * 1993-12-10 1995-04-18 Riemann; Mathew W. Tick removing device
EP1053833A2 (fr) * 1999-04-16 2000-11-22 connectool GmbH & Co. Outil de montage
WO2004009301A1 (fr) * 2002-07-18 2004-01-29 Oceaneering International, Inc. Organe terminal effecteur

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US612813A (en) * 1898-10-25 Gem-holder
GB1546996A (en) * 1976-10-21 1979-06-06 Wolkert P O M Device for handling electrical components
US5002323A (en) * 1989-06-22 1991-03-26 Instruments Of Sweden, Inc. Tweezer for tick removal

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US612813A (en) * 1898-10-25 Gem-holder
GB1546996A (en) * 1976-10-21 1979-06-06 Wolkert P O M Device for handling electrical components
US5002323A (en) * 1989-06-22 1991-03-26 Instruments Of Sweden, Inc. Tweezer for tick removal

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5407243A (en) * 1993-12-10 1995-04-18 Riemann; Mathew W. Tick removing device
EP1053833A2 (fr) * 1999-04-16 2000-11-22 connectool GmbH & Co. Outil de montage
EP1053833A3 (fr) * 1999-04-16 2001-09-26 connectool GmbH & Co. Outil de montage
WO2004009301A1 (fr) * 2002-07-18 2004-01-29 Oceaneering International, Inc. Organe terminal effecteur

Also Published As

Publication number Publication date
SE9103324D0 (sv) 1991-11-12
SE9103324L (sv) 1993-05-10
SE469063B (sv) 1993-05-10
AU2959492A (en) 1993-06-15

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