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EP3192615A1 - Outil isolé et/ou appareil de mesure - Google Patents

Outil isolé et/ou appareil de mesure Download PDF

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Publication number
EP3192615A1
EP3192615A1 EP16002694.4A EP16002694A EP3192615A1 EP 3192615 A1 EP3192615 A1 EP 3192615A1 EP 16002694 A EP16002694 A EP 16002694A EP 3192615 A1 EP3192615 A1 EP 3192615A1
Authority
EP
European Patent Office
Prior art keywords
measuring device
plug
tool
insulation
modules
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.)
Withdrawn
Application number
EP16002694.4A
Other languages
German (de)
English (en)
Inventor
Richard Van Egdom
Nicola Dennis Kruse
Jürgen Schöneweiß
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.)
Stahlwille Eduard Wille GmbH and Co KG
Original Assignee
Stahlwille Eduard Wille GmbH and Co KG
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 Stahlwille Eduard Wille GmbH and Co KG filed Critical Stahlwille Eduard Wille GmbH and Co KG
Publication of EP3192615A1 publication Critical patent/EP3192615A1/fr
Withdrawn legal-status Critical Current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
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
    • B25B23/142—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers
    • B25B23/1422—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers torque indicators or adjustable torque limiters
    • B25B23/1427—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers torque indicators or adjustable torque limiters by mechanical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F1/00—Combination or multi-purpose hand tools
    • B25F1/02—Combination or multi-purpose hand tools with interchangeable or adjustable tool elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G1/00—Handle constructions
    • B25G1/10—Handle constructions characterised by material or shape
    • B25G1/12—Handle constructions characterised by material or shape electrically insulating material

Definitions

  • Pliers, screwdrivers, testers and the like are used in numerous electrically sensitive applications. Such tools or measuring devices are used, for example, in electrical devices, electrical machines or in the construction or repair of electrical lines. For insulation against electrical voltages, the tools have an insulating layer.
  • the insulation layer is often made of ceramic or plastic, depending on the application. The insulating layer naturally has a poor electrical conductivity in each case.
  • an insulation layer is provided on the parts that come into contact with the user.
  • the parts are immersed for isolation in a plastic bath with liquid plastic. After a curing phase, the plastic nestles around the part, as far as it was previously immersed in the plastic bath.
  • the tool consists of a shaft and a transversely extending handle.
  • the handle and most of the shaft are covered by an electrically insulating housing.
  • the insulating housing of the tool consists of at least two parts, which are connected to each other by means of welding or the like.
  • the DE 790 03 812 U1 is a tool, such as socket wrench or screwdriver with torque limiting described.
  • the tool has a shaft and a handle.
  • An electrically insulating housing envelops the handle and most of the shaft.
  • the insulating housing of the tool consists of at least two parts welded together.
  • the DE 1 991 993 U1 discloses a torque wrench for mounting electrical clamps.
  • the torque wrench is surrounded by a housing made of insulating material. From the housing protrudes a polygon, which is intended for tightening Allen screws with a certain torque.
  • a handle made of glass fiber reinforced resin with screws is also attached.
  • the known tools or measuring devices such as torque wrenches, have the disadvantage that users can receive a shock when changing the plug-in or plug-in modules.
  • the housing of the currently used devices have an insulation, which, however, does not affect all components of the tool or Measuring device extends. Here is a significant potential for the user to accidentally get an electric shock.
  • the object of the invention is therefore to avoid the disadvantages of the prior and to provide a tool or measuring device in which the user receives no electric shock when changing the input or plug-in module.
  • the housing or the handle is insulated against electrical voltages at best. Incorrect operation and accidental touching of the changer system often resulted in electrical shocks to the user. Especially in the high voltage range, where such tools or measuring devices are also used, this can be life-threatening for the user.
  • the invention is based on the recognition that not only the handle or the housing must be electrically insulated, but also the exchange system of the tool or measuring device must have an insulation. The change system must be designed in such a way that the replacement works perfectly without loss of insulation.
  • the plug-in modules or plug-on modules have electrical insulation. Since an isolated change system alone is often not sufficient to the tool or meter sufficiently well against electrical voltages isolate, has proven to be advantageous if the respective plug-in or plug-in module according to an insulation has, The isolation of the plug-in or plug-in modules prevents an additional source of danger to come into contact with the electrical voltage.
  • the electrical insulation In the case of tools or measuring instruments, it may happen that the insulation must be removed in order, for example, to carry out a calibration. Insulations made by immersing the housing or handle in a liquid plastic which eventually hardens must be removed by cutting. It is therefore associated with considerable effort to reach the interior of the housing. After removal of the insulation, this must be applied again with considerable effort. It has therefore been shown in an advantageous embodiment of the electrically insulated tool and / or measuring device according to the invention that the electrical insulation consists of two half-shells, which are composed. These shells can be easily disassembled, so as to make an adjustment or calibration, for example. Preferably, in a particular variant of the invention, the half shells are assembled with spring and groove. The connection of spring and groove can be welded together either for example with ultrasound or suitable heat sources.
  • a particularly advantageous embodiment of the electrically isolated tool and / or measuring device according to the invention is achieved in that the tool and / or measuring device is designed as a torque wrench or torque screwdriver. Even in the high voltage range, tighten screw connections with a defined torque in order not to destroy the threads.
  • torque wrenches or torque screwdrivers are the appropriate means. In order to minimize the risk of an electric shock for the user to minimize the torque wrench or torque screwdriver according to the invention if possible completely isolated. This includes especially the exchange system for the plug-in or plug-on modules.
  • a preferred variant of the electrically isolated tool and / or measuring device according to the invention therefore additionally consists in that the changing system for receiving plug-in modules or plug-on modules has an electrically insulated mechanism for releasing the plug-in modules or plug-on modules.
  • the plug-in or plug-in module can be easily solved by the exchange system.
  • a locking mechanism may be provided which is released by an actuating button or operating lever, so that the plug-in or plug-on module can be released.
  • An advantageous embodiment of the electrically isolated tool and / or measuring device according to the invention consists in the fact that the electrical insulation has a glass fiber reinforcement. This stabilizes the insulation. This stabilization can be incorporated, for example, as a fabric in the insulation. Glass fibers are considerably harder than plastic, which often produces insulation.
  • Polyphthalamide materials are characterized by high cut resistance.
  • Polyphthalamides are also known, for example, under the trade names Amodel, Grivory, Ultramid T, Akromid T, VESTAMID HTplus and Zytel HTN.
  • a preferred embodiment of the electrically isolated tool and / or measuring device according to the invention also results from the fact that an electrically isolated switching is provided for a right and left suit.
  • an electrically isolated switching is provided for a right and left suit.
  • a preferred embodiment of the electrically insulated tool and / or measuring device results from the fact that the components of the exchange system consist of non-conductive material or provided coated with an insulation. This measure serves to increase the degree of isolation of the exchange system. This is to ensure that there are no electric flashovers on the change system.
  • Fig. 1 an embodiment of an isolated torque wrench 10 according to the invention is shown in a schematic diagram, which has a change system 12 with electrical insulation 14.
  • the insulation is a poorly conductive plastic, which is crossed for reinforcement and cut resistance with a glass fiber fabric.
  • polyphthalamides can also be used for the insulation.
  • the torque wrench 10 has a housing 16 on which a grip part 18, a lever 20 and a receiving end 22 are formed.
  • the receiving end 22 is tapered and provided with a latching mechanism 24.
  • the change system 12 has a receiving sleeve 26.
  • the tapered receiving end 22 is inserted into the receiving sleeve 26 and releasably engaged in the latching mechanism 24 a. The change system 12 and the torque wrench 10 are thus firmly connected.
  • the change system 12 further includes a slip-on mechanism 28 for a slip-on module 30.
  • the change system 12 is designed as a ratchet 32 in the present embodiment.
  • the change system 12 can alternatively be designed, for example, as an open-end or open-end wrench.
  • On the front side of the ratchet 32 a drive square 36 is provided, on which, for example, a Aufsteckmodul 30 trained Aufsteck Whyl 34 or a drive part is pushed with a corresponding inner square.
  • the drive square 36 is formed as an external square.
  • To anchor the socket wrench 34 locks a latching mechanism 66 (see Fig. 3 ) of the drive square 36 in the inner square of the socket key 34 a.
  • the latching mechanism 66 is released with an actuating button 38. By pressing the operating knob 38, the latching mechanism 66 releases, so that the Aufsteck finallyl 34 can be removed.
  • the ratchet 32 is configured to lock in one direction of rotation.
  • a shift lever 40 which is provided in the present embodiment of the exchange system, the direction of rotation of the ratchet can be changed.
  • a display 42 is provided in the housing 16 on the grip part 18.
  • the display 42 indicates the respective torque which is applied to the torque wrench 10.
  • the display is protected by an insulating disk 43 which is incorporated in the insulation 14.
  • a digital representation may also be provided.
  • the applied torque is transmitted from the ratchet 32 via a lever system with a flexure in the housing 16. About the flexure each current torque is detected. At a certain target torque of the torque wrench 10 triggers in the case of a triggering torque wrench 10, ie it signals the user when a set torque has been reached.
  • the housing 16 of the torque wrench 10 is completely surrounded by the insulation 14.
  • the insulation 14 consists of two insulating half-shells 44, 46, as it is for example in Fig. 2 is shown.
  • the change system 12 also has an insulation 48.
  • the actuator button 38 and the lever 40 for the ratchet 32 are made of a non-conductive material.
  • the insulation 48 also extends to the drive square 36.
  • the Aufsteck gettingl 34 is either made of a non-conductive material itself or has a corresponding insulation 48.
  • the insulation 48 of the exchange system 12 also consists of two half-shells 50, 52nd
  • a thumbwheel 54 is provided at the end of the handle portion 18. With the setting wheel 54, the target torques at which the torque wrench 10 is to trigger, can be adjusted.
  • the adjusting wheel 54 is provided detachably. As a result, the torque wrench 10 can be readjusted if necessary.
  • Fig. 2 shows in a schematic diagram of the insulated torque wrench 10 according to Fig. 1 in which the changing system 12 is removed. As far as these two figures correspond, the same reference numerals are used. In this presentation of Fig. 2 In particular, the tapered receiving end 22 and the latching mechanism 24 will be visible.
  • the insulating shells 44, 46 of the torque wrench 10 are each at their contact points via a spring and groove connection, as well as in the FIGS. 4 to 7 recognizable, interconnected.
  • the two insulating half-shells 44, 46 completely surround the housing 16 so that a user does not receive an electric shock.
  • the tapered receiving end 22 includes a stop 56 to which the changing system 12 can be performed with its receiving sleeve 26.
  • FIG. 3 shows in an enlarged section the change system 12 with electrical insulation 48.
  • the change system 12 is designed as a ratchet 32.
  • the ratchet 32 is formed by a gear 58 and a pawl 60.
  • An actuating pin 62 extends from the shift lever 40 to the pawl 60.
  • the pawl 60 can be actuated via the actuating pin 62 with the shift lever 40.
  • the pawl 60 is biased by a spring element 63.
  • the gear 58 is connected to the drive square 36.
  • the latching mechanism 66 consists of a spring-loaded punch 68 with a pin 70 which projects into the vertical bore 64 of the drive square 36.
  • a transverse bore 72 is provided through which a detent ball 74 protrudes only partially outward.
  • the detent ball 74 locks the plug-in module 30 by cooperation with a transverse groove of the inner square of the plug-on module.
  • the punch 68 is pressed to release the latching mechanism 66 against the spring force of a coil spring 76 with the non-conductive knob 38. In this case, the detent ball 74 can escape into a recess 78 of the pin 70 for releasing the plug-on module 30.
  • the plug-on module 30 is pushed away with the pin 70 from the locked position and can be removed from the drive square 36.
  • the connecting plug element 80 has a spring-loaded latching pin 82.
  • the changeover system 12 is pushed for attachment to the housing of the torque wrench 10 with the receiving sleeve 26 via the tapered receiving end 22 to the stop 56.
  • the connecting plug element 80 protrudes into a corresponding opposite opening 96 (see Fig. 6 ) of the housing 16 at the receiving end 22.
  • the spring-loaded detent pin 82 engages in the opening 96 a.
  • the change system 12 is fixed to the housing 16 of the torque wrench 10.
  • the change system 12 is completely surrounded by the insulation 48.
  • Operating elements such as the operating knob 38 or the lever 40, consist of a non-conductive material.
  • the insulation 48 consists of the two half-shells 50, 52, which are joined together with the spring and groove connection. It is intended that the Aufsteckmodule 30 also have sufficient insulation against electrical voltages.
  • Fig. 4 shows in a section a small section of the union of the two-part insulation 14, 48 for the torque wrench 10. As far as this representation corresponds to the previous figures, the same reference numerals are used.
  • the edge 84 of each half shell 44 and 50 has a groove 86, while the edge 88 of the respective other half shell 46 and 52 has a spring 90.
  • Fig. 5 shows in a section a small section of the welded combination of the two-part insulation 14, 48 for the torque wrench 10. If components of the previous figures are used, the corresponding reference numerals are also adopted.
  • the spring 90 is pressed into the groove 86. With a welding agent 92, this compound 94 is held together.
  • the connection 94 is electrically insulating, so that no electrical voltages can overturn. If necessary, the connection can also be welded with ultrasound.
  • pulsed ultrasonic welding one or more thermoplastic materials are bonded together by internal friction in the joining zone. Ultrasonic welding is particularly suitable for thermoplastics.
  • FIG. 6 shows the two-piece insulation 14 from an end face of the receiving end 22 for the torque wrench 10. As far as this representation corresponds to the previous figures, the same reference numerals are used.
  • the tapered receiving end 22 of the insulated housing 16 terminates in the stop 56.
  • the opening 96 is seated centrally on the end face of the receiving end 22. In this opening 96 serves to receive the male connector element 80.
  • the receiving sleeve 26 of the exchange system 12 slides over for attaching the parts the receiving end 22.
  • Fig. 7 shows in a perspective view of the two-piece insulation 14 for the torque wrench 10.
  • the insulating half-shells 44, 46 each have at their edges 84, 88 grooves 86 and springs 90. By compressing the tongue and groove connection 86, 90, the half-shells 44,46 can be joined together. Between the half-shells 44, 46 can easily accommodate the housing 16 of the torque wrench 10.
  • the tongue and groove joint 86, 90 is ultrasonically welded during manufacture.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
EP16002694.4A 2015-12-21 2016-12-20 Outil isolé et/ou appareil de mesure Withdrawn EP3192615A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202015106981.2U DE202015106981U1 (de) 2015-12-21 2015-12-21 Isoliertes Werkzeug und/oder Messgerät

Publications (1)

Publication Number Publication Date
EP3192615A1 true EP3192615A1 (fr) 2017-07-19

Family

ID=55274427

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16002694.4A Withdrawn EP3192615A1 (fr) 2015-12-21 2016-12-20 Outil isolé et/ou appareil de mesure

Country Status (2)

Country Link
EP (1) EP3192615A1 (fr)
DE (1) DE202015106981U1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017109117B4 (de) * 2017-04-27 2021-05-06 Wiha Werkzeuge Gmbh Schraubendreher und Verfahren zum Anziehen einer Schraube
DE102022113887B4 (de) 2022-06-01 2024-04-25 Wiha Werkzeuge Gmbh Isoliertes Drehwerkzeug

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1991993U (de) 1968-04-17 1968-08-14 Schiffmann, Alois, Dipl.-Kfm., 8000 München Drehmomentschlüssel für die montage von elektrischen klemmen
DE7836483U1 (de) 1978-12-08 1979-03-22 Hazemeijer B.V., Hengelo (Niederlande) Werkzeug, wie steckschluessel oder schraubenzieher mit drehmomentbegrenzung beim festdrehen
DE7903812U1 (de) 1979-02-12 1979-05-10 Hazemeijer B.V., Hengelo (Niederlande) Werkzeug, wie steckschluessel oder schraubenzieher mit drehmomentbegrenzung beim festdrehen
EP0331534A1 (fr) * 1988-03-03 1989-09-06 Ateliers Sibille Et Cie Clé à cliquet isolante
US5259277A (en) * 1992-07-13 1993-11-09 Snap-On Tools Corporation Electrically insulating composite hand tool
DE29902455U1 (de) * 1999-02-12 1999-07-15 Eulenbach KG, 42349 Wuppertal Elektrisch isolierte Umschaltratsche
WO2002009913A1 (fr) * 2000-07-28 2002-02-07 Snap-On Technologies, Inc. Outil isolant a axe composite dote de tetes interchangeables, et son procede de fabrication
DE202004002614U1 (de) * 2004-02-24 2004-05-06 Eduard Wille Gmbh & Co. Kg Griffanordnung an einem Drehmomentschlüssel
US20110314973A1 (en) * 2010-06-24 2011-12-29 Cheng-Chang Tsai Well coated wrench
US20120111159A1 (en) * 2010-11-06 2012-05-10 Jih Chun Wu Isolative Torque-Exerting Apparatus
DE202013102105U1 (de) * 2013-05-14 2013-05-28 Yeh-Ching Chang Verstellbares Antriebswerkzeug
US20140182425A1 (en) * 2012-12-27 2014-07-03 Yu-Ching Kuo Hand Tool
DE202015105733U1 (de) * 2015-10-28 2015-11-06 Eduard Wille Gmbh & Co. Kg Werkzeug- und/oder Messgeräteisolierung

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1991993U (de) 1968-04-17 1968-08-14 Schiffmann, Alois, Dipl.-Kfm., 8000 München Drehmomentschlüssel für die montage von elektrischen klemmen
DE7836483U1 (de) 1978-12-08 1979-03-22 Hazemeijer B.V., Hengelo (Niederlande) Werkzeug, wie steckschluessel oder schraubenzieher mit drehmomentbegrenzung beim festdrehen
DE7903812U1 (de) 1979-02-12 1979-05-10 Hazemeijer B.V., Hengelo (Niederlande) Werkzeug, wie steckschluessel oder schraubenzieher mit drehmomentbegrenzung beim festdrehen
EP0331534A1 (fr) * 1988-03-03 1989-09-06 Ateliers Sibille Et Cie Clé à cliquet isolante
US5259277A (en) * 1992-07-13 1993-11-09 Snap-On Tools Corporation Electrically insulating composite hand tool
DE29902455U1 (de) * 1999-02-12 1999-07-15 Eulenbach KG, 42349 Wuppertal Elektrisch isolierte Umschaltratsche
WO2002009913A1 (fr) * 2000-07-28 2002-02-07 Snap-On Technologies, Inc. Outil isolant a axe composite dote de tetes interchangeables, et son procede de fabrication
DE202004002614U1 (de) * 2004-02-24 2004-05-06 Eduard Wille Gmbh & Co. Kg Griffanordnung an einem Drehmomentschlüssel
US20110314973A1 (en) * 2010-06-24 2011-12-29 Cheng-Chang Tsai Well coated wrench
US20120111159A1 (en) * 2010-11-06 2012-05-10 Jih Chun Wu Isolative Torque-Exerting Apparatus
US20140182425A1 (en) * 2012-12-27 2014-07-03 Yu-Ching Kuo Hand Tool
DE202013102105U1 (de) * 2013-05-14 2013-05-28 Yeh-Ching Chang Verstellbares Antriebswerkzeug
DE202015105733U1 (de) * 2015-10-28 2015-11-06 Eduard Wille Gmbh & Co. Kg Werkzeug- und/oder Messgeräteisolierung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SINGER S ET AL: "ROLLS-ROYCE FLYING HIGH", MACHINE DESIGN, PENTON MEDIA, CLEVELAND, OH, US, vol. 70, no. 14, 6 August 1998 (1998-08-06), pages 22, XP000824266, ISSN: 0024-9114 *

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