EP2036681A1 - Visseuse, en particulier visseuse de court-circuit - Google Patents

Visseuse, en particulier visseuse de court-circuit Download PDF

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Publication number
EP2036681A1
EP2036681A1 EP07018153A EP07018153A EP2036681A1 EP 2036681 A1 EP2036681 A1 EP 2036681A1 EP 07018153 A EP07018153 A EP 07018153A EP 07018153 A EP07018153 A EP 07018153A EP 2036681 A1 EP2036681 A1 EP 2036681A1
Authority
EP
European Patent Office
Prior art keywords
base housing
housing
power
handle
receiving box
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Withdrawn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
EP07018153A
Other languages
German (de)
English (en)
Inventor
Alexander Kipfelsberger
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP07018153A priority Critical patent/EP2036681A1/fr
Publication of EP2036681A1 publication Critical patent/EP2036681A1/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Withdrawn legal-status Critical Current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
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • 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
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/008—Cooling 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
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/02—Construction of casings, bodies or handles

Definitions

  • the invention relates to a power wrench, in particular a shut-off wrench, according to the preamble of claim 1.
  • a well-known generic shut-off screwdriver ( DE 203 19 668 U1 ) consists essentially of a motor control unit and a power transmission.
  • the motor control unit comprises a metallic base housing in which an electric motor and an electronic control unit and operating elements are accommodated and to which a handle is attached.
  • the power transmission which is connected to transmit rotational movement to the engine control unit, comprises a transmission housing and an output tool approach, preferably a square for attaching nuts and / or connectors, and a connection for attaching a Stitzfußes as a torque transducer.
  • Abschaitschrauber are power tools especially for the production of heavy screw with predetermined high tightening torques and for solving such screw.
  • the components in particular the electric motor are heavily stressed and heated. It is therefore necessary to protect against overloading of the components, an effective cooling, which in the known screwdriver by a housing-internal rotationally driven fan and through the housing walls outwardly guided cooling channels is realized.
  • the base housing of the engine operating unit and possibly the gear housing are coated in the generic shutdown screwdriver with conventional color paints.
  • Abschaltschrauber is well suited for use in buildings and construction sites without special critical environmental conditions and proven many times.
  • shut-off wrenches are used in "offshore" areas on drilling rigs or when mounting wind turbines in offshore wind farms, both the safe screwing and disconnecting function and the service life can be impaired.
  • the reason for this lies in the strong risk of corrosion for the components due to salt water splashes and salty ambient air, which develop their highly corrosive effect on the power screwdriver both from the outside of the housing and through the open to the outside cooling channels in the interior of the power wrench on the local components.
  • a relatively short life of a shut-off screw, possibly in conjunction with a total failure of the screwdriver function in such an "offshore” deployment are clearly significant disadvantages.
  • shut-off wrench particularly critical and questionable is also a reduced function of a corrosion-damaged shut-off wrench, although the nutrunner function works, but the shutdown function in conjunction with a predetermined tightening torque is no longer safe and accurate, because then possibly required pre-calculated tightening torques in assembly connections no longer met exactly can be.
  • the object of the invention is therefore to develop a generic power screwdriver, in particular a shut-off screwdriver so that it can be used with high reliability and increased life in "offshore” montages under severe environmental conditions with salt water splashes and salty ambient air.
  • the base housing of the engine operating unit and the gear housing in the assembled state without openings in particular without cooling channels splashproof according to IP54 closed.
  • heat-dissipating cooling fins are at least partially mounted and the entire surfaces of the base housing and the gear housing are coated by Vercadmen with a cadmium layer.
  • the entire surfaces inside and outside of both the base housing and the gear housing are coated by cadmium with a Cadmium Anlagen.
  • a cadmium coating reduces and slows the penetration of salty corrosion media into a metallic base material by a cathodic surface protection, thereby ensuring a lasting corrosion protection.
  • the corrosion protection thus acts advantageously on the outer surfaces of the base housing and the gear housing.
  • Particularly noteworthy, however, is the effect in the housing interior areas, as by appropriate shapes
  • the housing in the inner area directly bearing points, component holders, connection points, etc. are created, where corrosion or corrosion of associated components sustainably prevented or at least greatly reduced.
  • any necessary maintenance and repairs are also facilitated, since detachable connections as well as contact surfaces can be removed more easily and without danger of damage.
  • the base housing made of an aluminum alloy, preferably as a die-cast aluminum part and the gear housing made of steel.
  • the mating of aluminum and steel is particularly critical in corrosive environments such as "offshore" assemblies.
  • the base housing has a basic cylinder shape, wherein a stator and a rotor of the electric motor are arranged with their axes coaxial in the cylinder axis.
  • a handle in the manner of a pistol grip is mounted, which protrudes approximately radially from the cylinder base shape of the base housing.
  • an electronics receptacle is molded onto the base housing, wherein between the handle and the electronics receiving box, a manual engagement clearance is recessed.
  • cooling ribs are provided on the outside for effective cooling on the base housing surfaces including the electronic receptacle box surfaces.
  • sufficient cooling surfaces in the region of the heat sources are available for effective cooling.
  • the base housing is composed of two integral housing half shells, which preferably abut directly with cadmised contact surfaces and are preferably releasably connected by screw, wherein the dividing line in the longitudinal plane through the cylinder axis Cylinder basic shape, the molded handle and the molded electronics receiving box runs. Contours may be provided in the interior of this housing half-shells, which results in the assembly of the half shells receptacles for bearings, engine components, etc.
  • a splash-proof power switch to the power transmission indicative front of the electronics box, and a splash-proof rocker button for one-handed operation at the front of the handle, as well as display and adjusting elements on the rear end wall of the base housing are arranged according to claim 6 for ergonomic operation.
  • the base housing and the power transmission can be rotatable relative to one another in a manner known per se, since the support foot is used on the power transmission for torque support. If necessary, however, a rigid connection between the base housing and power transmission can be made via a blocking pin according to claim 8.
  • Fig. 1 is a shut-off wrench shown with a motor control unit 2 and a power transmission 3 axially connected thereto, which has a ring gear 4 for attaching a (dashed lines drawn) support foot as a torque transducer 5 end. This is followed by an additional drive square 6 for attaching nuts or the illustrated standard connector. 7
  • Fig. 3 Also in the side view of Fig. 3 the shut-off screwdriver 1 with its motor control unit 2 and the power transmission 3 is shown. In Fig. 3 the rear view of the engine operating unit 2 is shown.
  • the base housing 8 of the engine operating unit has a basic cylinder shape, wherein a handle 9 on a housing end region opposite to the power transmission 3 protrudes approximately radially from the base housing 8 in the manner of a pistol grip.
  • an electronics receiving box 10 is formed, which has approximately the width of the base housing 8 and also approximately radially protrudes from the base housing 8, wherein between the handle 9 and the electronics receiving box 10 a Hand fürfirraum 11 is recessed.
  • the base housing 8 is composed of two respective one-piece base housing half-shells 8a, 8b, wherein the parting line 12 extends in a longitudinal plane through the cylinder axis 13, the handle 9 and the electronics receiving box 10.
  • longitudinally extending cooling ribs 14 on the base housing 8 or the base housing half shells 8a, 8b are integrally formed on the outside of the base housing surfaces including the electronics receiving box surfaces.
  • all surfaces of the base housing half-shells 8a, 8b both in the housing interior and in the housing outer region and also the surfaces of the gear housing 15 are coated by Vercadmen with a cadmium layer on which also a chromating is applied.
  • FIG. 4 In the exploded view to Fig. 4 the two housing half-shells 8a and 8b are shown unfolded, wherein in the inner region of the formations for receiving the inner components in assembled housing half-shells 8a, 8b can be seen.
  • the components installed in the axial direction are at the top of the Fig. 4 shown with a bearing ring ball bearing 16 a stator 17, a rotor 18, another bearing ring ball bearing 19, a magnet holder 20, a disk 21, a magnet 22, a further disk 23, a sensor board 24 and a setting control unit 25 with an LED electronics or LCD electronics.
  • FIG. 3 The rear view side of the engine operating unit 2 with the setting operation unit 25 is in Fig. 3 shown with a display 26 and adjustment buttons 27 in particular for setting the Abschaltcardmomente, the direction of rotation and rotation angles and relaxation processes.
  • the control electronics unit 30 consists essentially of a power module 31, a logic board 32 and a line filter 33.
  • the control electronics unit 30 is accommodated in its entirety in the electronics receiving box 10 formed when the base housing half shells 8a, 8b are closed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Motor Or Generator Frames (AREA)
EP07018153A 2007-09-14 2007-09-14 Visseuse, en particulier visseuse de court-circuit Withdrawn EP2036681A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07018153A EP2036681A1 (fr) 2007-09-14 2007-09-14 Visseuse, en particulier visseuse de court-circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07018153A EP2036681A1 (fr) 2007-09-14 2007-09-14 Visseuse, en particulier visseuse de court-circuit

Publications (1)

Publication Number Publication Date
EP2036681A1 true EP2036681A1 (fr) 2009-03-18

Family

ID=38988418

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07018153A Withdrawn EP2036681A1 (fr) 2007-09-14 2007-09-14 Visseuse, en particulier visseuse de court-circuit

Country Status (1)

Country Link
EP (1) EP2036681A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3223597B1 (fr) 2014-11-25 2019-01-09 Pellenc Outil électroportatif, et en particulier sécateur électrique à dissipateur thermique
US11139722B2 (en) 2018-03-02 2021-10-05 Black & Decker Inc. Motor having an external heat sink for a power tool

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0293706A1 (fr) * 1987-06-05 1988-12-07 Deutsche Gardner-Denver GmbH & Co Outil de vissage
WO2001005559A2 (fr) * 1999-07-16 2001-01-25 Gass Stephen F Outils electriques ameliores
DE20319668U1 (de) * 2003-12-18 2004-04-01 Alki Technik Gmbh Schraubsysteme Entwicklung-Produktion-Vertrieb Motor-/Bedieneinheit eines Abschaltschraubers

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0293706A1 (fr) * 1987-06-05 1988-12-07 Deutsche Gardner-Denver GmbH & Co Outil de vissage
WO2001005559A2 (fr) * 1999-07-16 2001-01-25 Gass Stephen F Outils electriques ameliores
DE20319668U1 (de) * 2003-12-18 2004-04-01 Alki Technik Gmbh Schraubsysteme Entwicklung-Produktion-Vertrieb Motor-/Bedieneinheit eines Abschaltschraubers

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3223597B1 (fr) 2014-11-25 2019-01-09 Pellenc Outil électroportatif, et en particulier sécateur électrique à dissipateur thermique
EP3223597B2 (fr) † 2014-11-25 2022-10-26 Pellenc Outil électroportatif, et en particulier sécateur électrique à dissipateur thermique
US11139722B2 (en) 2018-03-02 2021-10-05 Black & Decker Inc. Motor having an external heat sink for a power tool

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