EP2559522A2 - Outil électrique avec une source de lumière activée par vibrations - Google Patents

Outil électrique avec une source de lumière activée par vibrations Download PDF

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Publication number
EP2559522A2
EP2559522A2 EP12177130A EP12177130A EP2559522A2 EP 2559522 A2 EP2559522 A2 EP 2559522A2 EP 12177130 A EP12177130 A EP 12177130A EP 12177130 A EP12177130 A EP 12177130A EP 2559522 A2 EP2559522 A2 EP 2559522A2
Authority
EP
European Patent Office
Prior art keywords
power tool
light source
vibration
tool
switch
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Withdrawn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
EP12177130A
Other languages
German (de)
English (en)
Inventor
Stephan HÖRMANN
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.)
Metabowerke GmbH and Co
Original Assignee
Metabowerke GmbH and Co
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 Metabowerke GmbH and Co filed Critical Metabowerke GmbH and Co
Publication of EP2559522A2 publication Critical patent/EP2559522A2/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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

Definitions

  • the invention relates to a power tool with a motor-driven tool holder and a light source for illuminating at least a portion of a workable by means of a tool located in the tool holder workpiece.
  • a light source for illuminating at least a portion of a workable by means of a tool located in the tool holder workpiece.
  • it may be useful to illuminate the working area of the corresponding electric hand tool in order to allow precise working.
  • the device shown in the cited document has the disadvantage that in each case for activating the lighting of the machine switch itself is to operate, that is, that the electric motor of the machine starts even when it is only desired, for example, a work of interest Just to illuminate the area without, however, drilling or sawing.
  • the present invention has the object to provide a power tool, which has increased flexibility with regard to the illumination of a work area of interest.
  • the power tool according to the invention shows a motor-driven tool holder and at least one light source for illuminating at least a portion of a means of a tool located in the tool holder machinable workpiece.
  • a vibration switch is provided for switching the light source in case of a shock of the power tool.
  • a vibration switch is understood to mean a device which triggers a switching process after vibrations / shocks.
  • the vibration switch may in particular contain a vibration sensor and a microcontroller connected thereto.
  • the occupational safety is increased, since the operator according to the present invention can refrain from, for the illumination of a possibly hard to reach working area a tool such as. To move a jigsaw blade in motion and thereby suspend an increased risk of injury.
  • An additional advantage results from the fact that the operator receives a visual feedback about their operational readiness already when the machine is received. For example, in machines that are powered by a mains voltage, the operator can immediately determine from the lighting of the light source whether the machine is connected to the mains. According to the prior art, he would have to press the machine switch, which can now be omitted according to the teachings of the invention.
  • this can be switched off, for example, by a timer or by letting go of the machine switch.
  • the shutdown of the light source can be done exclusively by the vibration switch.
  • the vibration switch may be provided with an optionally adjustable timer, by which the above-mentioned period of time can be adjusted in particular by a user.
  • a factory-fixed fixed time period in particular in the range of 5s-10s is conceivable here.
  • the vibration switch does not necessarily have to react only to vibrations, ie essentially periodic vibrations. Rather, it can also be configured in such a way that it already switches the light source when the power tool changes position.
  • a detection unit may be present, by which it can be determined whether the vibration or position change was triggered by a user or unintentionally (for example, during transport).
  • the detection unit is suitable for detecting a period of time within which a machine switch is actuated after a vibration / change in position of the power tool device.
  • it may be provided to automatically deactivate the light source after one minute of operation, if no operation of the machine switch has taken place within this minute. In this way, especially in battery-powered Machine tools the situation encountered that the device is exposed during transport vibrations that activate the light source. Without automated deactivation of the light source, it would be reactivated every time it is shaken, for example during a long drive.
  • the power tool automatically turns off the light source and disables the vibration switch, so that a re-activation of the light source by the vibration switch is not initially possible. Only by possibly also briefly pressing the machine switch, the vibration switch is then activated again and turns on a vibration of the power tool, the light source.
  • the above-mentioned period within which the machine switch is to be activated may be in the range of 10 seconds to 5 minutes.
  • the detection unit is adapted to determine whether the power tool is being held by an operator at the time of the shock / displacement change. In the event that the detection unit determines that the power tool is held by an operator, it is presumed that the shock has occurred intentionally and the lighting is activated by means of the vibration switch.
  • the detection unit comprises a touch sensor, which is arranged, for example, in a handle of the power tool.
  • the contact sensor may be designed in particular as a capacitive sensor and be integrated, for example, in a plastic injection-molded structure of the housing of the power tool, in particular in the grip area, so that it is not visible from outside the power tool.
  • the light source can be designed so that it is suitable for surface illumination of the portion of the workpiece, so that the environment of an intended cut or an intended hole can be reliably illuminated, resulting in a considerable facilitation of the work.
  • the invention described above is a useful addition.
  • the light sources or the light source can be designed as LEDs.
  • FIG. 1 shows an example in which the invention is used in a jigsaw 1 as a power tool device.
  • non-designated light sources illuminate the portion 3 of the workpiece 2 and thus allow a safe, comfortable machining of the workpiece.
  • FIG. 2 an exemplary circuit diagram for the realization of the invention is shown.
  • the senor S in the present example is designed as a so-called microballsensor, in which a movable ball opens or closes a contact in the case of mechanical shocks.
  • microballsensor in which a movable ball opens or closes a contact in the case of mechanical shocks.
  • Such sensors are offered for example by Sensolute GmbH, Ludwigshafen, under the name "Micro Vibration Sensor”.
  • About the resistors R 1 and R 2 (R 2 in the range between 4 and 5kOhm, especially about 4.7kOhm) is the sensor S to the supply voltage. Between Resistors R 1 and R 2 , the potential applied there is tapped and is applied to the microcontroller M.
  • the capacitor C is used in the present case for interference suppression.
  • the microcontroller M switches via the series resistor R v , which may have a resistance in the range of a few hundred ohms, for example, designed as an LED light source L.
  • the vibration switch in the context of the present invention in particular from the sensor S and the microcontroller M is formed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
EP12177130A 2011-08-16 2012-07-19 Outil électrique avec une source de lumière activée par vibrations Withdrawn EP2559522A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011081025.0A DE102011081025B4 (de) 2011-08-16 2011-08-16 Elektrowerkzeug mit vibrationsaktivierter Lichtquelle

Publications (1)

Publication Number Publication Date
EP2559522A2 true EP2559522A2 (fr) 2013-02-20

Family

ID=46545279

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12177130A Withdrawn EP2559522A2 (fr) 2011-08-16 2012-07-19 Outil électrique avec une source de lumière activée par vibrations

Country Status (2)

Country Link
EP (1) EP2559522A2 (fr)
DE (1) DE102011081025B4 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11027392B1 (en) 2020-04-27 2021-06-08 Techtronic Cordless Gp Compact multi-material cut-off tool
US11772224B2 (en) 2020-04-27 2023-10-03 Techtronic Cordless Gp Compact multi-material cut-off tool
DE102022213034A1 (de) 2022-12-02 2024-06-13 Robert Bosch Gesellschaft mit beschränkter Haftung Handwerkzeugmaschine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1068934B1 (fr) 1999-07-13 2005-08-17 Makita Corporation Outil motorisé avec dispositif d'éclairage

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003211374A (ja) 2002-01-21 2003-07-29 Hitachi Koki Co Ltd 電動工具
JP2009226513A (ja) 2008-03-21 2009-10-08 Hitachi Koki Co Ltd 電動工具
JP5353516B2 (ja) 2009-07-17 2013-11-27 日立工機株式会社 携帯用工具
DE102009035134A1 (de) 2009-07-29 2011-02-03 Festool Gmbh Hand-Werkzeugmaschine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1068934B1 (fr) 1999-07-13 2005-08-17 Makita Corporation Outil motorisé avec dispositif d'éclairage

Also Published As

Publication number Publication date
DE102011081025B4 (de) 2019-08-08
DE102011081025A1 (de) 2013-02-21

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