WO2000059686A2 - Electrically insulated hand tool with a detent mechanism - Google Patents

Electrically insulated hand tool with a detent mechanism Download PDF

Info

Publication number
WO2000059686A2
WO2000059686A2 PCT/SI2000/000006 SI0000006W WO0059686A2 WO 2000059686 A2 WO2000059686 A2 WO 2000059686A2 SI 0000006 W SI0000006 W SI 0000006W WO 0059686 A2 WO0059686 A2 WO 0059686A2
Authority
WO
WIPO (PCT)
Prior art keywords
tool
electrically insulated
detent mechanism
hand tool
switching
Prior art date
Application number
PCT/SI2000/000006
Other languages
French (fr)
Other versions
WO2000059686A3 (en
Inventor
Tone OFENTAVŠEK
Original Assignee
Ofentavsek Tone
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 Ofentavsek Tone filed Critical Ofentavsek Tone
Priority to AT00925853T priority Critical patent/ATE242683T1/en
Priority to AU44478/00A priority patent/AU4447800A/en
Priority to DE60003313T priority patent/DE60003313T2/en
Priority to EP00925853A priority patent/EP1198327B1/en
Publication of WO2000059686A2 publication Critical patent/WO2000059686A2/en
Publication of WO2000059686A3 publication Critical patent/WO2000059686A3/en

Links

Classifications

    • 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
    • B25G1/125—Handle constructions characterised by material or shape electrically insulating material for screwdrivers, wrenches or spanners
    • 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
    • B25B13/46—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle
    • B25B13/461—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member
    • B25B13/462—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member the ratchet parts engaging in a direction radial to the tool operating axis
    • B25B13/463—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member the ratchet parts engaging in a direction radial to the tool operating axis a pawl engaging an externally toothed wheel

Definitions

  • the invention refers to the electrically insulated hand tool ("racna") with a detent mechanism that allows for rotation and/or for the transfer of force in a specific direction only, whereby the . direction of rotation and/or the direction of the transfer of force can be determined through two pushbuttons.
  • the tool is used in combination with attachments of different size, provided for tightening and/or loosening of nuts and/or screws with duly shaped heads.
  • the invention is classified as class B 25B of the international patent classification.
  • the technical problem successfully solved by this invention involves such design and construction of the electrically insulated hand tool (“racna”) that will enable efficient insulation and easy switching of the direction of rotation.
  • the problem of insulation of the hand tool with a detent mechanism (“racna”) has been solved through plastification of the standard tool and in particular of the respective handle and individual attachments.
  • Such solution has been described in the patent document No. EP 0 331 534.
  • the deficiencies of such solution are primarily manifested in the fact that in case of any repair such tool cannot be disassembled or repaired, but shall be replaced by a new one; besides, the knob provided for regulation of the direction of rotation is not insulated.
  • the patent document EP 0 432 278 describes the hand tool with a detent mechanism that allows for switching of the direction of rotation by means of a sliding knob on the handle.
  • the sliding knob is connected with a locking rail that can be moved into one or other direction in order to move the tool into one direction or other.
  • the sliding knob is not a perfectly reliable design solution, because in case of an accidental depression of the knob the locking rail may move, whereby in case of a strong force the teeth of the gear currently in grip may get damaged.
  • the electrically insulated hand tool with a detent mechanism consists of a tool body, from the top and from the bottom closed by sheet metal covers, bearing a switching mechanism controlled by two switching pushbuttons that are covered with a soft membrane. The whole tool is covered with an insulating coating that provides for good electrical insulation of the tool from the user.
  • Figure 1 shows the electrically insulated hand tool (“racna”) with a detent mechanism referred to in this invention, as top cross- section view;
  • Figure 2 shows the electrically insulated hand tool (“racna”) with a detent mechanism referred to in this invention, as top view;
  • Figure 3 shows the electrically insulated hand tool ("racna") with a detent mechanism referred to in this invention, as lateral cross-section view.
  • the electrically insulated hand tool with a detent mechanism essentially consists of the body 8 of the tool, from the top closed by the upper sheet metal cover 5 and from bellow by the lower sheet metal cover 6. Both covers 5, 6 are fixed to the body 8 by two screws 18, 19. On one end of the tool, there are the upper handle 9 and the lower handle 10, while on the other end of the tool the gear 1 is mounted perpendicularly to the axle of the body 8. Through the gear 1 there runs the opening axle 2 that acts through the spring 16 to the ball 17. On depression of the top of the opening axle 2 the axle 2 moves in the way that the ball 7 disappears into the opening on the axle 2. In this way it is easy to replace the attachable tools, but in the initial position of the opening axle 2 the attachable tool cannot fall out due to the disappearing tool.
  • the body 8 bears the mechanism for switching the direction of rotation . It consists of the pendulum 12, the switch 13 and the spring 14 operating via the detent 3. On the upper side of the tool, there are two switching pushbuttons 11 that actuate the pendulum 12.
  • On depression of one of the two switching pushbuttons 11 the force is transferred to the pendulum 12 that starts rotating and actuates the switch 13.
  • Both switching pushbuttons 11 are covered with a soft membrane 7 and the whole body 8 of the tool is covered with an insulating coating 15.
  • the insulating coating 15 in produced through injection of the tool upon the assembling.
  • the handle of the tool is of anatomical shape and manufactured in combination with a soft material.
  • the body 8 is made of plastics, reinforced with the upper sheet metal cover 5 and with the lower sheet metal cover 6.

Abstract

The invention refers to the electrically insulated hand tool with a detent mechanism that allows for rotation and/or for the transfer of force in a specific direction only, whereby the direction of rotation and/or the direction of the transfer of force can be determined through two pushbuttons. The electrically insulated hand tool with a detent mechanism, such as referred to this invention, contains in the body (8) of the tool, from the top closed by the upper sheet metal cover (5) and from bellow by the lower sheet metal cover (6), a switching mechanism controlled by two switching pushbuttons (11) that are covered with a soft membrane (7), the whole tool being covered with an insulating coating (15).

Description

ELECTRICALLY INSULATED HAND TOOL WITH A DETENT
MECHANISM
The invention refers to the electrically insulated hand tool ("racna") with a detent mechanism that allows for rotation and/or for the transfer of force in a specific direction only, whereby the. direction of rotation and/or the direction of the transfer of force can be determined through two pushbuttons. The tool is used in combination with attachments of different size, provided for tightening and/or loosening of nuts and/or screws with duly shaped heads. The invention is classified as class B 25B of the international patent classification.
The technical problem successfully solved by this invention involves such design and construction of the electrically insulated hand tool ("racna") that will enable efficient insulation and easy switching of the direction of rotation. With the existing designs of this tool the problem of insulation of the hand tool with a detent mechanism ("racna") has been solved through plastification of the standard tool and in particular of the respective handle and individual attachments. Such solution has been described in the patent document No. EP 0 331 534. The deficiencies of such solution are primarily manifested in the fact that in case of any repair such tool cannot be disassembled or repaired, but shall be replaced by a new one; besides, the knob provided for regulation of the direction of rotation is not insulated.
The patent document EP 0 432 278 describes the hand tool with a detent mechanism that allows for switching of the direction of rotation by means of a sliding knob on the handle. The sliding knob is connected with a locking rail that can be moved into one or other direction in order to move the tool into one direction or other. In this case the sliding knob is not a perfectly reliable design solution, because in case of an accidental depression of the knob the locking rail may move, whereby in case of a strong force the teeth of the gear currently in grip may get damaged.
Each of the above described versions of the hand tool with a detent mechanism solves a specific technical problem, while the solution in question aims at the manufacture of such electrically insulated hand tool ("racna") with a detent mechanism whereof the design will provide for reliable electrical insulation of the tool, while the switching of the direction of rotation will be simple and possible only with the tool holding hand. The electrically insulated hand tool with a detent mechanism referred to in this invention consists of a tool body, from the top and from the bottom closed by sheet metal covers, bearing a switching mechanism controlled by two switching pushbuttons that are covered with a soft membrane. The whole tool is covered with an insulating coating that provides for good electrical insulation of the tool from the user.
The invention will be described in detail by means of concrete examples and the corresponding figures where
Figure 1 shows the electrically insulated hand tool ("racna") with a detent mechanism referred to in this invention, as top cross- section view;
Figure 2 shows the electrically insulated hand tool ("racna") with a detent mechanism referred to in this invention, as top view;
Figure 3 shows the electrically insulated hand tool ("racna") with a detent mechanism referred to in this invention, as lateral cross-section view.
As a matter of fact, the electrically insulated hand tool with a detent mechanism, such as referred to in this invention and shown in figures 1 through 3, essentially consists of the body 8 of the tool, from the top closed by the upper sheet metal cover 5 and from bellow by the lower sheet metal cover 6. Both covers 5, 6 are fixed to the body 8 by two screws 18, 19. On one end of the tool, there are the upper handle 9 and the lower handle 10, while on the other end of the tool the gear 1 is mounted perpendicularly to the axle of the body 8. Through the gear 1 there runs the opening axle 2 that acts through the spring 16 to the ball 17. On depression of the top of the opening axle 2 the axle 2 moves in the way that the ball 7 disappears into the opening on the axle 2. In this way it is easy to replace the attachable tools, but in the initial position of the opening axle 2 the attachable tool cannot fall out due to the disappearing tool.
Approximately in the centre of the tool referred to in this invention, the body 8 bears the mechanism for switching the direction of rotation . It consists of the pendulum 12, the switch 13 and the spring 14 operating via the detent 3. On the upper side of the tool, there are two switching pushbuttons 11 that actuate the pendulum 12. The pendulum 12, depending on which of the switching pushbuttons 11 is depressed, operates via the switch 13 to the spring 14 whereof the free end allows for line movement of the detent 3 that is not fixed anywhere and partly lies in the grip of the gear 1. Longitudinal shifting of the detent 3 is prevented by the supports 4. On depression of one of the two switching pushbuttons 11 the force is transferred to the pendulum 12 that starts rotating and actuates the switch 13. This involves a change to the support of the switching spring 14 and the placement of the detent 3 into one of both end positions. On depression of the second pushbutton 11 the pendulum rotates backwards and the switching is effected in the opposite direction. The detent 3 is constructed in the way that the load of the gear 1 drags it in the direction of the make position, while the force is transferred to the support. When the gear 1 is rotated into the opposite direction, the detent 3 moves away from the make position, which allows for a reverse stroke. It is pushed back into the make position by the switching spring 14. As a matter of fact, in the make position the detent is gripping several teeth, which allows for transmission of even bigger moments.
Both switching pushbuttons 11 are covered with a soft membrane 7 and the whole body 8 of the tool is covered with an insulating coating 15. The insulating coating 15 in produced through injection of the tool upon the assembling. The handle of the tool is of anatomical shape and manufactured in combination with a soft material. The body 8 is made of plastics, reinforced with the upper sheet metal cover 5 and with the lower sheet metal cover 6.

Claims

1. The electrically insulated hand tool with a detent mechanism, characterized in that the body (8) of the tool, from the top closed by the upper sheet metal cover (5) and from bellow by the lower sheet metal cover (6), contains a switching mechanism controlled by two switching pushbuttons (11 ) that are covered with a soft membrane (7), the whole tool being covered with an insulating coating (15).
2. The electrically insulated hand tool with a detent mechanism pursuant to claim 1 , characterized in that the two switching pushbuttons (11 ) of the switching mechanism, via the pendulum (12) and the switch (13), move the spring (14) that actuates the detent (3) that moves along the line and partly lies in the grip of the gear (1 ).
3. The electrically insulated hand tool with a detent mechanism pursuant to claims 1 and 2, characterized in that the body (8) is made of plastics.
PCT/SI2000/000006 1999-04-06 2000-04-05 Electrically insulated hand tool with a detent mechanism WO2000059686A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AT00925853T ATE242683T1 (en) 1999-04-06 2000-04-05 ELECTRICALLY INSULATED HAND TOOL WITH LOCKING MECHANISM
AU44478/00A AU4447800A (en) 1999-04-06 2000-04-05 Electrically insulated hand tool with a detent mechanism
DE60003313T DE60003313T2 (en) 1999-04-06 2000-04-05 ELECTRICALLY INSULATED HAND TOOL WITH LOCKING MECHANISM
EP00925853A EP1198327B1 (en) 1999-04-06 2000-04-05 Electrically insulated hand tool with a detent mechanism

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SI9900079A SI20257B (en) 1999-04-06 1999-04-06 Electric insulated tool with snap-on mechanism
SIP-9900079 1999-04-06

Related Child Applications (2)

Application Number Title Priority Date Filing Date
US09958217 A-371-Of-International 2001-12-13
US10/832,513 Continuation-In-Part US20040194584A1 (en) 1999-04-06 2004-04-26 Electrically insulated hand tool with a detent mechanism

Publications (2)

Publication Number Publication Date
WO2000059686A2 true WO2000059686A2 (en) 2000-10-12
WO2000059686A3 WO2000059686A3 (en) 2001-03-01

Family

ID=20432439

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SI2000/000006 WO2000059686A2 (en) 1999-04-06 2000-04-05 Electrically insulated hand tool with a detent mechanism

Country Status (7)

Country Link
EP (1) EP1198327B1 (en)
AT (1) ATE242683T1 (en)
AU (1) AU4447800A (en)
DE (1) DE60003313T2 (en)
ES (1) ES2200873T3 (en)
SI (1) SI20257B (en)
WO (1) WO2000059686A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI421151B (en) * 2011-12-28 2014-01-01 Ssu Cheng Lai Insulation tool

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4336728A (en) * 1980-10-08 1982-06-29 Deibert Raymond L Push-button reversible ratchet and pawl socket wrench handle
DE3602570C1 (en) * 1986-01-29 1987-07-16 Hazet Werk Zerver Hermann Ratchet wrench
US4770072A (en) * 1985-01-07 1988-09-13 Eduard Wille Gmbh & Co. Reversible ratchet wrench
US4862775A (en) * 1988-10-19 1989-09-05 Jessie Chow Control device for ratchet wrenches
EP0331534A1 (en) * 1988-03-03 1989-09-06 Ateliers Sibille Et Cie Insulated ratchet wrench
EP0431278A2 (en) * 1989-12-08 1991-06-12 Hazet-Werk Hermann Zerver GmbH & Co. KG Ratchet key
EP0714110A1 (en) * 1994-11-25 1996-05-29 Black & Decker Inc. Improved hand tool
DE29614810U1 (en) * 1996-08-27 1996-10-24 Klaus Friedrich Gmbh & Co Switchable ratchet wrench

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4336728A (en) * 1980-10-08 1982-06-29 Deibert Raymond L Push-button reversible ratchet and pawl socket wrench handle
US4770072A (en) * 1985-01-07 1988-09-13 Eduard Wille Gmbh & Co. Reversible ratchet wrench
DE3602570C1 (en) * 1986-01-29 1987-07-16 Hazet Werk Zerver Hermann Ratchet wrench
EP0331534A1 (en) * 1988-03-03 1989-09-06 Ateliers Sibille Et Cie Insulated ratchet wrench
US4862775A (en) * 1988-10-19 1989-09-05 Jessie Chow Control device for ratchet wrenches
EP0431278A2 (en) * 1989-12-08 1991-06-12 Hazet-Werk Hermann Zerver GmbH & Co. KG Ratchet key
EP0714110A1 (en) * 1994-11-25 1996-05-29 Black & Decker Inc. Improved hand tool
DE29614810U1 (en) * 1996-08-27 1996-10-24 Klaus Friedrich Gmbh & Co Switchable ratchet wrench

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI421151B (en) * 2011-12-28 2014-01-01 Ssu Cheng Lai Insulation tool

Also Published As

Publication number Publication date
DE60003313D1 (en) 2003-07-17
ES2200873T3 (en) 2004-03-16
AU4447800A (en) 2000-10-23
EP1198327A1 (en) 2002-04-24
WO2000059686A3 (en) 2001-03-01
EP1198327B1 (en) 2003-06-11
SI20257A (en) 2000-12-31
ATE242683T1 (en) 2003-06-15
SI20257B (en) 2008-06-30
DE60003313T2 (en) 2004-04-29

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