EP2200785B1 - Machine-outil électroportative et procédé pour faire fonctionner une machine-outil électroportative - Google Patents

Machine-outil électroportative et procédé pour faire fonctionner une machine-outil électroportative Download PDF

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Publication number
EP2200785B1
EP2200785B1 EP08774820.8A EP08774820A EP2200785B1 EP 2200785 B1 EP2200785 B1 EP 2200785B1 EP 08774820 A EP08774820 A EP 08774820A EP 2200785 B1 EP2200785 B1 EP 2200785B1
Authority
EP
European Patent Office
Prior art keywords
power tool
electric power
handheld electric
capacitive switch
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.)
Not-in-force
Application number
EP08774820.8A
Other languages
German (de)
English (en)
Other versions
EP2200785A1 (fr
Inventor
Reiner Krapf
Bjoern Haase
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2200785A1 publication Critical patent/EP2200785A1/fr
Application granted granted Critical
Publication of EP2200785B1 publication Critical patent/EP2200785B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H9/06—Casing of switch constituted by a handle serving a purpose other than the actuation of the switch, e.g. by the handle of a vacuum cleaner
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2239/00—Miscellaneous
    • H01H2239/006—Containing a capacitive switch or usable as such
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2300/00—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
    • H01H2300/024—Avoid unwanted operation

Definitions

  • the invention relates to an electric power tool with a main switch and at least one safety device for releasing the function of the electric power tool according to the preamble of claim 1.
  • a machine is made EP 1 595 661 A known.
  • the invention relates to a method for operating an electric hand-held power tool, which comprises a main switch and at least one safety device for enabling the function of the electric hand-held power tool.
  • Electric hand tool machines and methods for operating these are known from the prior art.
  • the main switch of an electric handheld power tool serves for switching on and off and optionally for stepped or stepless adjustment of an operating parameter of the electric handheld power tool.
  • the rotational speed of an electric motor of the electric handheld power tool can be adjusted by means of the main switch.
  • the safety device is integrated into the electric hand tool machine in such a way that it can release or prevent the function of the electric hand tool, so that in the latter case, despite actuated main switch, the electric hand tool is not usable, since the function is not released by the safety device.
  • the safety device for example, unintentional switching on the electric hand tool machine should be prevented.
  • two-stage so-called two-stage
  • switch-on levels are necessary to turn the device on.
  • This may be two separate or spaced mechanical switches attached to the power hand tool, or a switch combining two switching functions.
  • the latter can for example be designed so that first a pressing, then turning or vice versa must be done to activate the electric hand tool.
  • Such combined switches are complicated and impractical to operate, especially when the user of the power hand tool must wear gloves at work to make it difficult to operate such a combined switch.
  • a handle assembly having a handle outer surface including a handle base body, which includes a hand inner surface support portion, wherein at least one pressure sensitive zone is formed in the region of the hand inner surface support portion for generating a signal indicative of the handle grip condition.
  • the electric hand tool machine is defined in claim 1 and has at least one capacitive switch associated with a handle of the electric hand tool. It is thus provided a non-contact safety device for the electric hand tool, which is associated with the handle of the electric hand tool and can thereby detect whether a user's hand is applied to the handle or whether a user holds the electric hand tool in the proper manner. Due to the advantageous embodiment, it does not matter whether the user wears gloves, as a direct contact with the user's hand is not necessary. The hand only has to dive into the electric field of the capacitive switch.
  • a handle of the electric hand tool machine is understood to be any area of the electric hand tool machine intended for holding and / or operating. This may be both a region of the electric hand-held power tool arranged on the housing of the electric hand-held power tool and a (grip) region projecting from the housing.
  • the handle of the EP 1 595 661 A1 is formed by a tube of electrically non-conductive material, wherein in the tube, an electromagnetic sensor is arranged, the output of which changes when touched at each position of the handle.
  • a sensor is in the EP 1 595 661 A1
  • a capacitive sensor with two electrodes proposed.
  • the inventive according to claim 1 electric hand tool has at least one of a handle of the electric hand tool machine associated capacitive switch. It is thus provided a non-contact safety device for the electric hand tool, which is associated with the handle of the electric hand tool and can thereby detect whether a user's hand is applied to the handle or whether a user holds the electric hand tool in the proper manner. Due to the advantageous embodiment, it does not matter whether the user wears gloves, as a direct contact with the user's hand is not necessary. The hand only has to dive into the electric field of the capacitive switch. If the capacitive switch is actuated or detects the capacitive switch, the hand of a user, the function of the electric power tool is released, so that the user receives the desired function upon actuation of the main switch.
  • a handle of the electric hand tool machine is understood to be any area of the electric hand tool machine intended for holding and / or operating. This may be both a region of the electric hand-held power tool arranged on the housing of the electric hand-held power tool and a (grip) region projecting from the housing.
  • the function of the electric hand-held power tool is a touch operation and / or a rest operation.
  • a touch operation is to be understood in this case the operation of the electric power tool by an active operation of the main switch by a user.
  • the latching operation can be realized for example by a mechanical engagement of the main switch, wherein the safety device releases the locking.
  • an "electrical" locking is conceivable.
  • the capacitive switch has a dielectric sensor region arranged on the handle.
  • the capacitive switch is thus designed such that it has a sensor region for detecting the dielectric.
  • the capacitive switch advantageously has a measuring capacitor whose capacitance changes between the capacitor plates by introducing a dielectric, in particular by introducing the hand of the user. The then additionally measured current serves as a measuring signal for the capacitive switch.
  • an alternating voltage is applied to the measuring capacitor and the impedance of the system is measured.
  • the dielectric sensor region which is determined by the arrangement of the measuring capacitor, is advantageously arranged on the electric hand tool or the handle of the electric hand tool that the user can operate both the capacitive switch and the main switch with one hand.
  • the capacitive switch is advantageously located at a location of the power hand tool that requires the user to hold / guide and operate the power hand tool with both hands.
  • the capacitive switch is advantageously located at a location of the power hand tool that requires the user to hold / guide and operate the power hand tool with both hands.
  • the electric hand tool one of the two arrangements mentioned may make sense. Of course, a combination of the two options is conceivable.
  • the capacitive switch has at least two spaced-apart dielectric sensor regions. These can be assigned to a handle or in each case a handle. Advantageously, they are associated with a handle, so that it can be detected or determined whether the user wraps around the handle of the electric hand-held power tool, for example with the whole hand. In this case, therefore, the user would have to completely enclose the handle by hand in order to release the function of the electric hand-held power tool or to actuate the safety device.
  • the dielectric sensor areas of the capacitive switch on the handle are substantially opposite each other.
  • the capacitive switch has an exciter electrode and at least one receiver electrode. These are designed and / or arranged such that the hand of the user or their position can be detected. Conveniently, the potential of the excitation electrode and the receiver electrode is related to the grounding potential of the electric hand tool.
  • the operating frequency of the capacitive switch is chosen to be higher than the mains frequency in order to avoid interference and to enable a safe fading electrical low-frequency noise. Furthermore, the operating frequency is advantageously chosen low enough, so that inexpensive components can be used for example for the audio frequency range.
  • the signal form of the excitation voltage is irrelevant. Both a sinusoidal signal and other signal forms, such as a rectangular signal, may be used.
  • the capacitive switch is designed as a multi-channel capacitive switch.
  • the capacitive switch has a plurality of electrode pairs and thus a plurality of dielectricity sensor regions.
  • the provision of a plurality of dielectric sensor regions has the additional advantage that, for example, when placing the electric hand tool with one side on a metallic substrate, only one measuring capacitor Dielektrizticians capableung detected, and an unintentional activation of the electric power tool or a release of the main switch is prevented.
  • the capacitive switch advantageously has a plurality of excitation electrodes operated at different frequencies. Wherein these interact with a corresponding number of receiver electrodes or advantageously with a smaller number or only one receiver electrode.
  • the multi-channel capacitive switch can be formed in a simple manner.
  • a separate measuring amplifier is required for each receiver electrode.
  • the safety device at least one of a handle of the electric hand tool machine associated capacitive switch, as described above, used.
  • the advantageous method can be detected without contact, whether a user holds the electric power tool in a designated manner or operated. If the capacitive switch is "actuated", then the safety device releases the function of the electric hand-held power tool so that, for example, an electric motor of the electric hand-held power tool can be activated.
  • the capacitive switch or the safety device then gives the function of the electric handheld power tool when a predetermined dielectricity of at least one dielectricity sensor region of the capacitive switch is changed or exceeded.
  • a change in the dielectric for example, a measuring capacitor of the capacitive switch detected, so the function of the electric power tool is released.
  • a limit for the dielectric which must be exceeded, so that the function of the electric power tool is released.
  • the capacitive switch releases the function of the electric handheld power tool when a predetermined dielectricity of the at least one dielectric sensor region is detected.
  • the predetermined dielectricity is also to be understood as a dielectricity range.
  • the capacitive switch can be designed such that it can only be activated or actuated by the human hand of a user.
  • the safety device releases the function of the electric hand-held power tool on actuation of the capacitive switch for a certain time and / or for the duration of the actuation of the main switch.
  • the safety device releases the function of the electric machine for a certain time or as long as the main switch is operated.
  • a combination of the two options is provided, whereby, for example, the electric hand tool after a (one-time) operation of the capacitive switch for a certain period of time is usable, and after failure of an operation of the main switch within the period of time, the capacitive switch must be pressed again to the function the handheld power tool (again) release.
  • the capacitive switch releases the function of the electric power tool for the duration of its operation.
  • the electric power tool is turned off as soon as the user removes his hand from the handle having the capacitive switch. This has advantages, for example, when the user is torn out of the hand of the electric hand tool machine during operation.
  • the FIG. 1 shows in an embodiment of an electric hand tool 1, which is designed as angle grinder 2.
  • the angle grinder 2 has a housing 3, in which an electric motor 4 and a control circuit not shown here are arranged.
  • the housing 3 is substantially cylindrical.
  • a transmission housing 5 connects to the housing 3, wherein in the transmission housing 5 cooperating with the electric motor 4 transmission is arranged, which transmits the drive power of the electric motor 4 on a grinding wheel 6 of the angle grinder 2.
  • a co-operating with the control circuit main switch 7 for actuating the angle grinder 2 is further arranged.
  • the main switch 7 is designed as a mechanically operated switch, for example as a common pressure lever switch.
  • the electric hand tool 1 and the angle grinder 2 further comprises a safety device 8, which cooperates with the main switch 7 or with the electric motor 4 such that the function of the electric power tool 1 or angle grinder 2 only then is released when a capacitive switch 9 is also actuated or activated by the user. This prevents, for example, that the electric hand tool 1 is activated inadvertently.
  • the capacitive switch 9 has, in the present embodiment, two spaced-apart dielectric sensor regions 10 and 11. Each of the sensor regions 10, 11 is formed by an exciter electrode 12 and a receiver electrode 13 cooperating therewith.
  • the electrodes 12, 13 are not visible from the outside arranged in the housing 3, so that the surface of the housing 3 design can be made sophisticated design, for example by marking the sensor areas 10,11 on the outside of the housing 3.
  • the internal arrangement is the Capacitive switch beyond not susceptible to wear.
  • the sensor regions 10, 11 or the capacitive switch 9 are arranged in the region of a handle 14.
  • the measuring capacitor 15 consists of two or more conductive materials or is designed as at least one electrically conductive coating on the inside of the housing 3.
  • the control circuit which controls it.
  • a DC voltage or preferably an AC voltage can be applied to the measuring capacitor 15.
  • the impedance of the system is detected.
  • the potentials of the exciter electrode 12 and the receiver electrode 13 are related to the ground potential of the electric hand tool 1.
  • the user In operation, the user must also actuate or activate the capacitive switch 9 in addition to the main switch 7, so that the function of the electric power tool 1 is released.
  • the function of the electric hand tool machine in addition to or instead of a touch operation, as described above, may also be a latching operation.
  • the arrangement of the sensor areas 10 and 11 at substantially two opposite sides of the handle 14 assumes that the user is doing the Electric hand tool 1 by hand "completely” encloses.
  • the release of the function can be done by the main switch 7 or the electric motor 4 are released electronically or mechanically upon activation of the capacitive switch 9.
  • the capacitive switch 9 is arranged on a projecting from the housing 3 second handle, so that the user must hold the electric hand tool 1 with two hands in order to use them.
  • the FIG. 2 shows an exemplary structure of the capacitive switch 9 and the safety device 8 in a schematic representation.
  • the capacitive switch 9 is designed as a multi-channel switch, wherein two exciter electrodes 12 cooperate with a receiver electrode 13. Wherein the first excitation electrode 16 is applied to a different frequency than the second excitation electrode 17. Both exciter electrodes 12 are connected to the voltage source and coupled to the receiver electrode 13 in a variable degree.
  • the safety device 8 or the capacitive switch 9 furthermore has a frequency-selective measuring amplifier 18, which amplifies and spectrally filters the voltages or currents applied to the exciter electrodes 12.
  • the safety device 8 has a discriminator 19, which compares the amplitude at the output of the frequency-selective measuring amplifier 18 with a reference value and on the basis of the result, whether the capacitive coupling between the excitation electrodes 12 and the receiver electrode 13 increases by the encompassing of the tool by hand and the tool can be used or whether no increase in the capacitive coupling has been observed and the tool for this reason must not be put into operation.
  • the user is now the main switch 7 so verifies the safety device 8 whether the electric hand tool 1 may be used or whether the capacitive switch 9 has been actuated.
  • the operating frequency f of the exciter electrodes 12 is expediently chosen to be much higher than the mains frequency in order to avoid interference and / or to allow safe fading of low frequency electrical noise. Particularly advantageous is the frequency range of 2 kHz to 10 kHz.
  • the excitation voltage may be both a sinusoidal signal and a signal having a different signal form, such as a rectangular signal.
  • FIG. 3 shows a further exemplary, schematically illustrated construction of the safety device 8 and the capacitive switch 9. From the preceding figures known elements are also provided here with the same reference numerals.
  • an excitation electrode 12 which is fed by an AC voltage source 21 with, for example, 5V and a frequency f.
  • the signal of the receiver electrode 13 is fed to the discriminator 19 via a bandpass filter 22.
  • the discriminator 19 compares the obtained signal with a reference signal 23 and, as described above, discriminates whether the function of the electric power tool 1 should be released (step 24).
  • the (audio frequency) exciter signal is first generated at a digital output of a microcontroller and this digital output is connected to the exciter electrode 12.
  • the tapped at the receiver electrode 13 voltage level is then converted in a measuring amplifier (18) in its impedance.
  • the impedance converter hides interference signals by a suitable frequency characteristic itself.
  • the output signal of the measuring amplifier 18 is then digitized in an analog-to-digital converter and sampled frequency-synchronously to a multiple exciter frequency f.
  • a numerical value is then calculated on the basis of the digitized measured values, which corresponds to the AC voltage level at the receiver electrode 13 at the frequency f. This voltage level can then be compared with a reference value (23). Exceeds the voltage level at the receiver electrode 13, the reference value 23, a signal is activated at a digital output, which unlocks the use of the electric power tool 1.
  • the digital filtering in the microcontroller extracts from the digitized voltage levels at the receiver electrode 13 several numerical values which correspond to the voltage amplitudes at the different exciter frequencies of the excitation electrode 12 (16, 17). This can be done numerically, for example by a Fourier transformation or alternatively by suitable digital FIR or IIR filters.
  • the circuit thereby enables a plurality of comparison variables when using only a single measuring amplifier 18.
  • the narrow-band spectral filtering is realized by a multi-stage analog amplifier for this purpose.
  • FIGS. 4A and 4B show embodiments for operating the electric hand tool 1 with the safety device 8.
  • the safety device 8 serves only for unlocking the main switch 7 (or the electric motor 4) once, so that the electric hand tool 1 can continue to be used even after the capacitive switch 9 has been deactivated.
  • the capacitive switch 9 would have to be actuated again in order to use the electric hand tool 1.
  • the main switch 7 is also configured as a capacitive switch 9, for example, to further increase the ease of use for the user.
  • the shape and distribution of the dielectric sensor surfaces 10, 11 can be freely designed, but is preferably modeled on the anatomy of the human hand.
  • the sensor areas 10, 11, as in the FIG. 1 shown formed as elongated sensor areas.
  • At least one of the dielectric sensor areas can also be accommodated in a "mechanically” protected area so that it can not be easily activated or actuated. This is the case when the dielectric sensor region 10 or 11 is arranged, for example, in a recess of the housing which shields the dielectric sensor region from "direct" access.
  • the electric power tool 1 may also be designed as a drill, impact drill, saw or the like.
  • the angle grinder 2 described here represents only one possible embodiment of the electric hand tool 1.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Auxiliary Devices For Machine Tools (AREA)

Claims (10)

  1. Machine-outil électroportative comportant un commutateur principal destiné à déclencher la fonction de la machine-outil électroportative et au moins un dispositif de sécurité destiné à déclencher le commutateur principal, dans lequel le dispositif de sécurité (8) comporte au moins un commutateur capacitif (9) associé à une poignée (14) de la machine-outil électroportative (1), caractérisée en ce que le commutateur capacitif (9) comporte au moins une électrode d'excitation (12) et au moins une électrode de détection (13) ainsi qu'au moins une zone de détection de coefficient diélectrique (10, 11) disposée sur la poignée (14), dans laquelle la fréquence de fonctionnement f de l'électrode d'excitation (12) se situe dans une gamme de fréquences supérieure à la fréquence du secteur de la machine-outil électroportative et se situe notamment dans une gamme de fréquences de 2 kHz à 10 kHz.
  2. Machine-outil électroportative selon la revendication 1, caractérisée en ce que le commutateur capacitif (9) comporte au moins deux zones de détection de coefficient diélectrique (10, 11) mutuellement espacées.
  3. Machine-outil électroportative selon l'une quelconque des revendications précédentes, caractérisée en ce que les zones de détection de coefficient diélectrique (10, 11) sont sensiblement opposées l'une à l'autre sur la poignée (14).
  4. Machine-outil électroportative selon l'une quelconque des revendications précédentes, caractérisée en ce que le commutateur capacitif (9) est réalisé sous la forme d'un commutateur capacitif multicanal.
  5. Machine-outil électroportative selon l'une quelconque des revendications précédentes, caractérisée en ce que le commutateur capacitif (9) comporte une pluralité d'électrodes d'excitation (16, 17) attaquées à des fréquences différentes.
  6. Procédé de mise en fonctionnement d'une machine-outil électroportative selon l'une ou plusieurs des revendications précédentes, dans lequel la machine-outil électroportative comporte un commutateur principal destiné à déclencher sa fonction et au moins un dispositif de sécurité destiné à déclencher le commutateur principal, caractérisé en ce qu'au moins un commutateur capacitif associé à la poignée de la machine-outil électroportative, doté d'au moins une électrode d'excitation (12) et d'au moins une électrode de réception (13), est utilisé pour le dispositif de sécurité, lequel commutateur capacitif comporte au moins une zone de détection de coefficient diélectrique (10, 11) disposée sur la poignée (14), dans lequel l'électrode d'excitation (12) est attaquée par un signal f se situant dans une gamme de fréquences supérieure à la fréquence du secteur de la machine-outil électroportative et plus particulièrement, dans la gamme de fréquences de 2 kHz à 10 kHz.
  7. Procédé selon la revendication 6, caractérisé en ce que le commutateur capacitif déclenche la fonction de la machine-outil électroportative lorsqu'un coefficient diélectrique prédéterminé d'au moins une zone de détection de coefficient diélectrique du commutateur capacitif est modifié et/ou dépassé.
  8. Procédé selon l'une quelconque des revendications 6 ou 7 précédentes, caractérisé en ce que le commutateur capacitif déclenche la fonction de la machine-outil électroportative lorsqu'un coefficient diélectrique prédéterminé de l'au moins une zone de détection de coefficient diélectrique est détecté.
  9. Procédé selon l'une quelconque des revendications 6 à 8 précédentes, caractérisé en ce que le dispositif de sécurité déclenche la fonction de la machine-outil électroportative lors de l'actionnement du commutateur capacitif pendant un temps déterminé et/ou pendant la durée de l'actionnement du commutateur principal.
  10. Procédé selon l'une quelconque des revendications 6 à 9 précédentes, caractérisé en ce que le dispositif de sécurité déclenche la fonction de la machine-outil électroportative lors de l'actionnement du commutateur capacitif pendant la durée de son actionnement.
EP08774820.8A 2007-09-05 2008-07-07 Machine-outil électroportative et procédé pour faire fonctionner une machine-outil électroportative Not-in-force EP2200785B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007042221A DE102007042221A1 (de) 2007-09-05 2007-09-05 Elektrohandwerkzeugmaschine sowie Verfahren zum Betreiben einer Elektrohandwerkzeugmaschine
PCT/EP2008/058746 WO2009030541A1 (fr) 2007-09-05 2008-07-07 Machine-outil électroportative et procédé pour faire fonctionner une machine-outil électroportative

Publications (2)

Publication Number Publication Date
EP2200785A1 EP2200785A1 (fr) 2010-06-30
EP2200785B1 true EP2200785B1 (fr) 2016-09-07

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EP08774820.8A Not-in-force EP2200785B1 (fr) 2007-09-05 2008-07-07 Machine-outil électroportative et procédé pour faire fonctionner une machine-outil électroportative

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EP (1) EP2200785B1 (fr)
DE (1) DE102007042221A1 (fr)
WO (1) WO2009030541A1 (fr)

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DE102009016355B3 (de) * 2009-04-07 2010-07-08 Ident Technology Ag Messelektrodenanordnung zur verbesserten Näherungsdetektion
DE102009057931B4 (de) * 2009-12-11 2015-07-09 Ident Technology Ag Schaltungsanordnung für ein kapazitives Sensorelement.
DE102009057933B3 (de) * 2009-12-11 2011-02-24 Ident Technology Ag Sensoreinrichtung sowie Verfahren zur Annäherungs- und Berührungsdetektion
DE102009057935B4 (de) * 2009-12-11 2015-07-09 Ident Technology Ag Einrichtung und Verfahren zur Detektion eines Umgreifens eines Handgeräts durch eine Hand
DE102010043519B4 (de) * 2010-11-05 2012-10-18 Ident Technology Ag Verfahren und Sensoreinrichtung zur Detektion eines Umgreifens eines Handgerätes
DE102011006743B4 (de) * 2011-04-04 2012-12-06 Ident Technology Ag Sensoreinrichtung und Verfahren zur Detektion eines Umgreifens eines Handgerätes
DE102011075426B4 (de) 2011-05-06 2024-02-01 Siemens Healthcare Gmbh Eingabeeinheit
DE102011118613A1 (de) * 2011-11-16 2013-05-16 Wsengineering Gmbh & Co.Kg Handgriff für ein motorisch angetriebenes Werkzeug sowie Verfahren zum Betrieb eines Totmannschalters
EP3007197A1 (fr) * 2014-10-07 2016-04-13 HILTI Aktiengesellschaft Capteur tactile et de proximité dans une machine-outil
DE102015214368A1 (de) * 2014-12-09 2016-06-09 Robert Bosch Gmbh Werkzeugmaschinenbedienvorrichtung
DE102015225723A1 (de) * 2015-12-17 2017-06-22 Robert Bosch Gmbh Handwerkzeugmaschinenvorrichtung
EP3316270A1 (fr) 2016-10-27 2018-05-02 HILTI Aktiengesellschaft Commutateur de machine-outil
DE102020120197A1 (de) 2020-07-30 2022-02-03 Metabowerke Gmbh Betätigungsschalter für eine Elektrowerkzeugmaschine, Verfahren zum Betreiben einer Elektrowerkzeugmaschine und Elektrowerkzeugmaschine

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DE10219368A1 (de) * 2002-04-30 2003-11-20 Magenwirth Gmbh Co Gustav Totmannvorrichtung
DE10232934A1 (de) 2002-07-19 2004-01-29 Ident Technology Ag Handgriffeinrichtung sowie Sicherheitsschaltungsanordnung insbesondere für ein kraftbetriebenes Werkzeug
DE10302532A1 (de) * 2003-01-23 2004-07-29 Hilti Ag Steuerung einer Handwerkzeugmaschine
DE102004024035A1 (de) * 2004-05-11 2005-12-08 Schmid & Wezel Gmbh & Co Griff für ein motorangetriebenes Handwerkzeug

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WO2009030541A1 (fr) 2009-03-12
EP2200785A1 (fr) 2010-06-30

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