EP0706442B1 - Werkzeug zum anziehen von befestigungsmitteln, insbesondere schraubendreher - Google Patents

Werkzeug zum anziehen von befestigungsmitteln, insbesondere schraubendreher Download PDF

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Publication number
EP0706442B1
EP0706442B1 EP95918039A EP95918039A EP0706442B1 EP 0706442 B1 EP0706442 B1 EP 0706442B1 EP 95918039 A EP95918039 A EP 95918039A EP 95918039 A EP95918039 A EP 95918039A EP 0706442 B1 EP0706442 B1 EP 0706442B1
Authority
EP
European Patent Office
Prior art keywords
driving
tool according
driven
handle
parts
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
EP95918039A
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English (en)
French (fr)
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EP0706442A1 (de
Inventor
Hervé Gilbert GOMAS
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.)
Facom SA
Original Assignee
Facom SA
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Filing date
Publication date
Application filed by Facom SA filed Critical Facom SA
Publication of EP0706442A1 publication Critical patent/EP0706442A1/de
Application granted granted Critical
Publication of EP0706442B1 publication Critical patent/EP0706442B1/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
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G1/00—Handle constructions
    • B25G1/06—Handle constructions reversible or adjustable for position
    • B25G1/063—Handle constructions reversible or adjustable for position for screwdrivers, wrenches or spanners
    • B25G1/066—Handle constructions reversible or adjustable for position for screwdrivers, wrenches or spanners the grip itself being angularly adjustable
    • 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
    • B25B15/00—Screwdrivers
    • B25B15/02—Screwdrivers operated by rotating the handle

Definitions

  • the present invention relates to a tool for screwing-unscrewing of the type described in the preamble of claim 1. It applies especially with screwdrivers.
  • the leading part forms the entire handle
  • the driven part is formed by the blade of the screwdriver.
  • the handle has a slot longitudinal, which seriously affects the comfort of typing of the handle in said first position of use.
  • the object of the invention is to provide means economical and reliable for exercising on a part either a relatively weak couple, or a couple much higher, by having a tool identical to conventional tools in the first position of use.
  • a screwdriver it is allow rapid screwing followed by tightening energetic at the end of the tightening, or an unlocking of a screw followed by rapid unscrewing.
  • the invention relates to a tool for tightening of the aforementioned type and including the characteristics of the claim 1.
  • the clamping tool according to the invention can have one or more of the characteristics described in claims 2 to 10.
  • This screwdriver 1 consists of a handle 2 carrying a blade 3 and has, in its normal position of use, a general axis X-X 'assumed to be vertical.
  • the handle 2 of the screwdriver 1 breaks down into a driving part or handle 4 and in a driven part 5 including a blade holder.
  • the handle 4 consists of an envelope exterior 6 of revolution around the axis XX ′, of a shape adapted to be easily gripped by a operator.
  • This envelope 6, for example in material plastic, has an elongated shape and has two end edges, upper 7 and lower 8, flat and horizontal.
  • This envelope 6 surrounds a cylindrical core 9 of axis XX ', for example of steel, the upper end of which 10 is flush with the end 7 of the casing 6 and of which a lower part 11 protrudes under the end 8 of this envelope.
  • the core 9 On a lower section of the order of a third of its length, the core 9 has a blind axial bore 12 with hexagon as shown in Figure 4. This bore 12 clearly penetrates into the envelope 6 and leads to the low.
  • Figure 5 shows that the lower part projection 11 of core 9 is split along the diameter of the bore 12, so as to form two legs 13 and 14 diametrically opposite and symmetrical about the axis X-X '. These legs are delimited internally by respective flat and parallel surfaces 15.16 making part of the above-mentioned hexagon.
  • the upper end 7 of the casing 6 carries a cap 20 in a spherical cap having a base diameter equal to that of this end 7.
  • This plug 20 is fixed by a cylindrical finger 21 inserted in a blind bore 22 of axis X-X ', formed in the core 9, the bore 22 being a depth slightly greater than the length of the finger 21.
  • the blade holder consists of a body 23, by plastic example, externally tapered and slightly converge downward, having two slices upper end 24 and lower 25 flat and horizontal.
  • This body 23 is crossed along the axis XX ' by a bore having two successive diameter reductions.
  • the bore section 26 having the largest diameter extends about half the height of the body 23 to from the upper end 24 thereof, from so as to be slightly deeper than the length of the lower part 11 projecting from the core 9.
  • the diameter of the section 26 is equal to the outside diameter of this core.
  • the intermediate bore section 27 has a hexagonal section identical to that of bore 12, and the second reduction in diameter defines a shoulder horizontal 28 near the lower end 25 of the body 23.
  • a shaft 29 of axis XX ′ for example of steel, with combined hexagon section of the section 27 and the bore 12, is force-fitted from above into the body 23 up to abut on the shoulder 28.
  • An upper section 30 of this tree 29 protrudes above the end upper 24 of body 23.
  • Two longitudinal grooves 31 and 32 diametrically opposite extend upward along the tree 29, substantially from the bottom of the bore section 26, without opening up.
  • the depth of these grooves allows the insertion of the protruding ends of the lugs 18 and 19 inside the grooves 31 and 32, with the surfaces 15 and 16 of legs 13 and 14 in contact with two opposite sides of the shaft 29.
  • an elastic ring circular 33 radially elastic is received in a peripheral groove of the shaft 29, so as to increase the friction between this shaft 29 and the adjacent surfaces bore 12 and legs 13.14.
  • a blind bore 34 This bore leads to the lower end of it and has a diameter slightly lower than that of the lower body section 23.
  • the screwdriver blade 3 is inserted with friction by the bottom inside this bore 34 and abuts against the bottom of it.
  • screwdriver 1 The operation of screwdriver 1 is now explained with reference to Figures 1, 2 and 6.
  • the screwdriver is used as a screwdriver usual, in the configuration of Figure 1.
  • the handle 4 is then vertical to the blade holder while being locked in it against any tipping. More specifically, the lower part 11 of the handle 4 is fitted into the bore section 26 of the blade holder, while the upper part 30 of the shaft 29 is inserted in bore 12.
  • This lock can be qualified as "positive” because it subsists when the user exercises a screwing / unscrewing couple and / or a pushing down and / or leveraging in a plane any radial, i.e. for any usual action exercised when using a screwdriver classic.
  • the handle 4 rotates the blade holder thanks to the shape hex of bore 12 and shaft 29 and possibly to the cooperation of the lugs 18 and 19 and the grooves 31 and 32.
  • the handle 4 is then unlocked, in now attaching the blade holder and pulling up the handle 4.
  • the pins 18 and 19 slide in the grooves 31 and 32 until they stop at the end superior of these.
  • the upper part of the tree 29 then lying entirely between the legs 13 and 14, the handle 4 can be tilted around the axis horizontal Y-Y 'defined by lugs 18 and 19, as the shows figure 6.
  • This part 4 thus constitutes an arm lever, and it's easy to exert a high torque on the screw, transmitted to the blade holder 5 via surfaces 15 and 16.
  • FIG. 7 shows a variant of blade holder in which is incorporated a reversible pawl 35.
  • This ratchet has a classic general structure, with a stator constituted by the body 23, a rotor 36 which has a flat vertical surface 37 extending along a cord, a movable wedge 38, a spring 39 for biasing this corner towards one end or the other of the surface 37, and a selection ring 40 which internally carries a lug 41 for attacking the spring.
  • the ring 40 is mounted rotatable at the lower end of the body 23 by means of a circular elastic ring 42, and its rotation in a sense or in the other defines the active direction of the ratchet.
  • the shaft 29 of FIGS. 1 and 2 came integrally with the body 23.
  • the blade 3 (which, in the example shown, is reversible) crosses freely a central orifice of the ring 40, then crosses with friction the rotor 36 and the shaft 29, until it stops at bottom of bore 34 of this shaft.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Claims (10)

  1. Werkzeug zum Anziehen-Lösen, insbesondere Schraubendreher, bestehend aus einem Griff (2), einem führenden Teil (4) und einem geführten Teil (5), die in einer ersten Verwendungsposition eine gemeinsame Drohachse (X-X') besitzen, Mitteln (18, 19) für das Kippen des führenden Teile (4) in bezug zu dem geführten Teil (5) und Mitteln zum verriegeln (11, 26, 12), die eine positive Verriegelungsposition des führenden Teile (4) in eine Position koaxial zu dem geführten Teil (5) sowie eine Position zur Freigabe der Kippmittel einnehmen können, wobei
    der führende Teil (4) einen Proximalteil (6, 9) umfaßt, der den Handgriff des Griffes (2) des Werkzeuge bildet;
    der geführte Teil (5) eine Klinge umfaßt;
    dar geführte und der führende Teil (4 und 5) beweglich koaxial zueinander bis zu einer vorbestimmten Entfernungsposition montiert sind, um die Kippmittel freizugeben;
    die Kippmittel mindestens einen Querstift (18) umfassen, der mit einem der beiden Teile, führender und geführter Teil, verbunden und in einer Längsnut (31, 32) des anderen Teils, der mit einem Anschlag versehen ist, beweglich ist, und
    die Verriegelungsmittel (11, 26, 12) einen Rücksprung zwischen dem führenden Teil (4) und dem geführten Teil (5) umfassen;
       dadurch gekennzeichnet, daß der Griff (2) aus zwei Teilen besteht, dem führenden Teil (4) und einem distalen komplementären Teil (23), der mit der Klinge verbunden ist.
  2. Werkzeug nach Anspruch 1, dadurch gekennzeichnet, daß in der Verriegelungsposition der Verriegelungsmittel (11, 26, 12) die beiden Teile (4, 23) des Griffes (2) mit ihren jeweiligen Endabschnitten (8, 24) in wechselseitigem Kontakt stehen.
  3. Werkzeug nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß jeder der beiden Teile, führender und geführter Teil, (4 und 5) eine männliche Verlängerung (11, 30) umfaßt, die in eine Aussparung entsprechender Form (26, 12) des anderen Teils eingreift.
  4. Werkzeug nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Querstift (18) in der Nähe des Endes des Teils (4), der ihn trägt, liegt.
  5. Werkzeug nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Rücksprung eine wechselseitige Führung für den führenden und den geführten Teil (4 und 5) durch eine nicht kreisförmige Form umfaßt.
  6. Werkzeug nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß in der vorbestimmten Entfernungsposition der geführte und der führende Teil (4 und 5) durch ebene Flächen (15, 16), die zu einer vorbestimmten Kippebene parallel sind, zusammenwirken.
  7. Werkzeug nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß es Bremsmittel umfaßt, insbesondere einen Ring (33), die derart ausgeführt sind, daß sie die Reibung zwischen dem führenden und dem geführten Teil (4 und 5) während ihrer koaxialen Verschiebungen erhöhen.
  8. Werkzeug nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß der Proximalteil (6, 9) des Griffes, der einen Handgriff darstellt, eine äußere Drehform aufweist.
  9. Werkzeug nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß der Klinge eine Hilfsvorrichtung (35) für die Übertragung des Moments, insbesondere eine Knarre, umfaßt.
  10. Werkzeug nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß es ferner eine Klinge (3) umfaßt, die an der Klinge anschlägt, gegebenenfalls über der Hilfsvorrichtung (35), die sie durchquert.
EP95918039A 1994-04-20 1995-04-20 Werkzeug zum anziehen von befestigungsmitteln, insbesondere schraubendreher Expired - Lifetime EP0706442B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9404741 1994-04-20
FR9404741A FR2718991B1 (fr) 1994-04-20 1994-04-20 Mécanisme de transmission de couple, et tournevis muni d'un tel mécanisme.
PCT/FR1995/000521 WO1995029041A1 (fr) 1994-04-20 1995-04-20 Outil de serrage, notamment tournevis

Publications (2)

Publication Number Publication Date
EP0706442A1 EP0706442A1 (de) 1996-04-17
EP0706442B1 true EP0706442B1 (de) 1998-07-15

Family

ID=9462322

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95918039A Expired - Lifetime EP0706442B1 (de) 1994-04-20 1995-04-20 Werkzeug zum anziehen von befestigungsmitteln, insbesondere schraubendreher

Country Status (5)

Country Link
US (1) US5816119A (de)
EP (1) EP0706442B1 (de)
DE (1) DE69503453T2 (de)
FR (1) FR2718991B1 (de)
WO (1) WO1995029041A1 (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2340199A (en) * 1998-08-03 2000-02-16 Stanley Works Ltd Ratchet mechanism
US6386075B1 (en) * 2001-05-03 2002-05-14 Hsuan-Sen Shiao Swingable handle adapted for rotating a tool bit of a hand tool
US6640672B1 (en) * 2002-08-19 2003-11-04 Gong Fong Enterprise Co., Ltd. Screwdriver
US7523525B2 (en) * 2003-04-22 2009-04-28 Mayhew Steel Products, Inc. Pry bar ergonomic handle
US8032991B2 (en) * 2003-05-05 2011-10-11 Mayhew Steel Products, Inc. Pry bar ergonomic handle
CN1297372C (zh) * 2003-08-06 2007-01-31 胡厚飞 结构改良的工具握把
JP2007276038A (ja) * 2006-04-05 2007-10-25 Hitachi Koki Co Ltd 電動工具
CA2708920A1 (en) * 2009-07-02 2011-01-02 Duron Plastics Limited Single-bit retractable screwdriver
TWI370761B (en) * 2010-02-08 2012-08-21 Kabo Tool Co Ratcheting tool
CN102152271A (zh) * 2010-02-12 2011-08-17 谢智庆 棘轮式手工具结构
US8820197B2 (en) * 2012-06-14 2014-09-02 Gong Fong Enterprise Co., Ltd. Hand tool with replacement handle
CN110340831A (zh) * 2019-06-10 2019-10-18 射阳县恒工工具有限公司 一种万能扳手

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2572444A (en) * 1946-06-21 1951-10-23 Carden Albert Tool handle
US2512232A (en) * 1947-01-17 1950-06-20 Ivan T Hart Reversible ratchet screw driver
US3068728A (en) * 1960-03-07 1962-12-18 Thomas L Shepherd Socket wrench
US4597478A (en) * 1984-07-10 1986-07-01 Easco Corporation Ratcheting tool with improved support for driven shank
FR2578772A2 (fr) * 1984-10-01 1986-09-19 Hartmann Sylvain Outil de serrage manuel
FR2570975A1 (fr) * 1984-10-01 1986-04-04 Hartmann Sylvain Outil de serrage manuel.
US5101696A (en) * 1989-06-23 1992-04-07 Ted Neff Driving tool with dual-position handle and locking means therefor
DE8910673U1 (de) * 1989-09-07 1989-12-07 Fa. Robert Schroeder, 5600 Wuppertal, De
CN1061286C (zh) * 1994-01-07 2001-01-31 伊兹鲍尔公司 多功能驱动工具

Also Published As

Publication number Publication date
WO1995029041A1 (fr) 1995-11-02
DE69503453D1 (de) 1998-08-20
US5816119A (en) 1998-10-06
FR2718991A1 (fr) 1995-10-27
DE69503453T2 (de) 1999-03-25
FR2718991B1 (fr) 1996-07-12
EP0706442A1 (de) 1996-04-17

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