EP3533076B1 - Switch device for machine tool - Google Patents

Switch device for machine tool Download PDF

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Publication number
EP3533076B1
EP3533076B1 EP17797085.2A EP17797085A EP3533076B1 EP 3533076 B1 EP3533076 B1 EP 3533076B1 EP 17797085 A EP17797085 A EP 17797085A EP 3533076 B1 EP3533076 B1 EP 3533076B1
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EP
European Patent Office
Prior art keywords
switching element
mode
raised portion
control device
operator control
Prior art date
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Active
Application number
EP17797085.2A
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German (de)
French (fr)
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EP3533076A1 (en
Inventor
Thomas Blatz
Lionel Barbier
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.)
Hilti AG
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Hilti AG
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Publication date
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Publication of EP3533076A1 publication Critical patent/EP3533076A1/en
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Classifications

    • 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
    • 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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/20—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch wherein an auxiliary movement thereof, or of an attachment thereto, is necessary before the main movement is possible or effective, e.g. for unlatching, for coupling
    • 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
    • H01H9/16—Indicators for switching condition, e.g. "on" or "off"
    • H01H9/161—Indicators for switching condition, e.g. "on" or "off" comprising light emitting elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/83—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by legends, e.g. Braille, liquid crystal displays, light emitting or optical elements
    • 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 present invention relates to an operating device for a machine tool, in particular a grinding device, containing at least a first and second switching element, the first switching element being adjustable into a first and second mode and the second switching element being adjustable into a first and second mode, the first switching element being at least a first signaling means for respectively signaling the first or second mode and the second switching element contains at least a second signaling means for respectively signaling the first or second mode.
  • the on and off switch (also called an operating device) on hand-held machine tools usually requires two independent operations to activate the machine tool. Such a safety feature is particularly required for grinding and cutting devices.
  • the object of the present invention is therefore to provide an improved operating device for a machine tool.
  • the object is achieved by providing an operating device for a machine tool, in particular a grinding device, containing at least a first and second switching element, the first switching element being adjustable into a first and second mode and the second switching element being adjustable into a first and second mode, wherein the first switching element contains at least one first signaling means for respectively signaling the first or second mode and the second switching element contains at least one second signaling means for respectively signaling the first or second mode.
  • the operating device is designed such that the second switching element can only be set from the first mode to the second mode when the first switching element is set from the first mode to the second mode. This can effectively prevent the second mode of the second switching element from being activated accidentally or unintentionally by the user without first switching the first switching element from the first to the second mode. An unintentional or unwanted mode, e.g. switching on the machine tool, can be prevented in this way and safety when handling a machine tool can be increased.
  • an elastomer attachment with a first and second elevation is included, the first switching element comprising the first elevation and the second switching element comprising the second elevation, wherein a housing of the machine tool contains at least a first and second opening, the first The elevation can be operated through the first opening and the second elevation can be operated through the second opening, the first and second elevations each containing at least one projection element and the first and second openings each having a border, each border containing at least one recess, whereby In an assembled state of the operating device, the at least one projection element is positioned in the at least one recess in such a way that the first or second elevation is prevented from completely passing through the respective first or second opening. This can prevent a survey that detaches from the elastomer attachment from falling through the opening and being lost. Separation of a bump from the elastomeric attachment may be a result of excessive use.
  • the first and second signaling means can be exclusively an optical signaling means, ie a lamp, or exclusively an acoustic signaling means.
  • both the first and the second signaling means can be designed by an optical and acoustic signaling means.
  • the first signaling means can be an optical signaling means and the second signaling means to be an acoustic signaling means.
  • the second signaling means can be an optical signaling means and the first signaling means to be an optical signaling means is an acoustic signaling device.
  • the optical or acoustic signaling means can be designed in such a way that either a continuous or sustained signal (ie continuous light) or an interrupted signal (ie flashing) is emitted.
  • a membrane keyboard may be included with at least a first and second membrane button, the elastomer attachment being positioned in a first direction above the membrane keyboard, so that by a predetermined pressure force in a second direction on the first
  • the first membrane button can be activated on the survey and the second membrane button can be activated on the second survey.
  • a simple and cost-effective operating device can be designed, which at the same time has resistance to moisture (e.g. water) penetrating into the operating device.
  • a circuit board with micro buttons can also be used instead of the membrane keyboard.
  • the elastomer attachment has an edge region which has an elevation extending in one direction around an outer contour of the elastomer attachment in order to produce a sealing effect, in particular for the membrane keyboard, in an assembled state of the operating device.
  • This practically creates an integrated seal on the elastomer attachment. This means that additional sealing can be avoided.
  • the elevation extending around an outer contour of the elastomer attachment can also be referred to as a bead or edge.
  • the seal should be particularly effective against penetrating moisture.
  • the first switching element may be implemented by the first elevation on the elastomeric attachment and the first membrane button and the second switching element through the second elevation on the elastomeric attachment and the second membrane button and the elastomeric attachment being so is positioned to the first and second openings of the housing so that the first elevation can be operated through the first opening and the second elevation can be operated through the second opening.
  • the first mode of the first switching element corresponds to a blocking function and the second mode of the first switching element corresponds to an enabling function and wherein the first mode of the second switching element corresponds to a rest function and the second mode of the second switching element corresponds to a Work function corresponds.
  • the first switching element may be adjustable from the first mode to the second mode only when the first switching element is actuated for longer than a predetermined period of time. This can ensure that the first switching element does not unintentionally change from the first to the second mode if the first switching element is only actuated for less than a predetermined period of time.
  • the machine tool can be informed that the user is consciously operating the first switching element and also intends to change from the first to the second mode.
  • the first switching element may also be possible for the first switching element to be set from the second mode back to the first mode if the second switching element is only actuated after a predetermined period of time has elapsed. This can ensure that the first switching element does not remain permanently in the second mode and that the second switching element and thus the machine tool can be activated or adjusted to the second mode in the event of careless handling by a user.
  • the first signal means may be possible for the first signal means to display the first mode of the first switching element when the second switching element is actuated. This allows the user to be shown in a simple manner that in order to change the mode (i.e. from the first to the second mode) of the second switching element, the first switching element must first be brought from the first to the second mode.
  • the first signal means may indicate the second mode of the first switching element when the first switching element is actuated for longer than a predetermined period of time. This allows the user of the machine tool to be shown in a simple manner that the first switching element has been actuated long enough and the second mode is now set for the first switching element.
  • the second signal means may be possible for the second signal means to display the first mode of the second switching element, when the first switching element is in the second mode. This allows the user of the machine tool to be shown in a simple manner that the second switching element is now ready to be set from the first to the second mode.
  • Figure 1 shows an operating device 1 for a machine tool, in particular a grinder.
  • the machine tool can also be any other suitable machine tool.
  • the machine tool is not completely shown in the figures. Only part of the housing 2 of the machine tool is shown in the figures.
  • the operating device 1 essentially contains an elastomer attachment 3 and a membrane keyboard 4.
  • the elastomer attachment 3 essentially contains a base plate 5 and a number of elevations (cf. Figure 2 and 3 ).
  • the elastomer attachment 3 is made of a soft, flexible plastic.
  • the plastic can be silicone or the like.
  • the elastomer attachment 3 has a first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth and eleventh elevation 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 on.
  • the first, second, third and fourth elevations 6, 7, 8, 9 are each cylindrical and solid and each serve as an actuating element.
  • the fifth to eleventh surveys 10, 11, 12, 13, 14, 15, 16 serve as a display element.
  • the elastomer attachment 3 can also be provided with a hard cap in the area of the actuating elements.
  • the membrane keyboard 4 essentially contains a first, second, third and fourth membrane key 17, 18, 19, 20 as well as a first and second signaling means 21, 22. Furthermore, a light scale with five light levels 23 is included on the membrane keyboard 4.
  • the signaling means 21, 22, 23 are each designed in the form of an LED (light-emitting diode). At one end 4a, the membrane keyboard 4 has a ribbon cable 24 as an electrical connection.
  • the machine tool contains a housing 2, which essentially contains a first and second housing half 2a, 2b. Both the elastomer attachment 3 and the membrane keyboard 4 are positioned and held in an assembled state between the first and second housing halves 2a, 2b.
  • the first housing half 2a has eleven openings 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35.
  • the eleven openings 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35 in the first housing half 2a serve to accommodate the eleven elevations 6, 7, 8, 9, 10, 11, 12, 13 , 14, 15, 16 of the elastomer attachment 3, so that a user can use the openings to activate the elevations 6, 7, 8, 9 designed as actuating elements.
  • first, second, third and fourth openings 25, 26, 27, 28 of the first housing half 2a have a border 36.
  • Each border 36 contains a first and second recess 36a, 36b.
  • each recess 36a, 36b does not extend over the entire height of the border 36, so that the recess 36a, 36b is essentially designed as a slot or notch in the border 36.
  • the first, second, third and fourth elevations 6, 7, 8, 9 each contain a first and second projection element 37, 38.
  • the first projection element 37 of the elevation 6, 7, 8, 9 is designed so that it fits into the respective first recess 36a, 36b of the opening 25, 26, 27, 28 can be inserted.
  • the second projection element 36a, 36b of the elevation 6, 7, 8, 9 is designed so that it can be inserted into the respective second recess 36b of the opening 25, 26, 27, 28. If the elevations 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 of the elastomer attachment 3 into the respective openings 25, 26, 27, 28, 29, 30, 31, 32, 33, 34 , 35 of the first housing half 2a are accommodated, the projection elements 37, 38 are inserted into the respective recesses 36a, 36b. The interaction of the projection elements 37, 38 with the recesses 36a, 36b prevents a survey 6, 7, 8, 9, which detaches from the base plate 5 of the elastomer attachment 3, from falling through the opening 25, 26, 27, 28. As a result, an elevation 6, 7, 8, 9 detached from the base plate 5 is still held in the opening 25, 26, 27, 28 of the first housing half 2a and is therefore still functional. A elevation 6, 7, 8, 9 can become detached from the base plate 5 due to wear.
  • the elastomer attachment 3 and the membrane keyboard 4 are in an assembled state between the first and second housing halves 2a, 2b.
  • the first and second housing halves 2a, 2b are releasably connected to one another with a screw connection.
  • the elastomer attachment is located in a first direction A above the membrane keyboard 4. It should be noted that the elastomer attachment 3 is arranged or positioned above the membrane keyboard 4 in such a way that the elevations 6, 7, 8, 9 designed as an actuating element (first, second, third and fourth surveys) are each positioned accordingly in the direction A above the first, second, third and fourth membrane buttons 17, 18, 19, 20.
  • the membrane buttons 6, 7, 8, 9 located in the second direction B below the elastomer attachment 3 can be activated.
  • the fifth to eleventh elevations 10, 11, 12, 13, 14, 15, 16, designed as a display element are located above the signaling means of the membrane keyboard 4.
  • the material of the elastomer attachment 3 is translucent.
  • the upper surface of the elevation 10, 11, 12, 13, 14, 15, 16 is coated so that it is opaque.
  • the coating has been removed so that the light from the signaling means underneath can shine through. This allows the Users of the machine tool can see that the signaling means on the outside of the housing 2 of the machine tool light up.
  • a combination of an elevation 6, 7, 8, 9 (i.e. first to fourth elevation) designed as an actuating element with one of the first to fourth membrane buttons 17, 18, 19, 20 serves as a switching element.
  • the first switching element 40 therefore contains the first elevation 6 designed as an actuating element and the first membrane button 17.
  • the second switching element 50 contains the second elevation 7 designed as an actuating element and the second membrane button 18.
  • the first switching element 40 i.e. the combination of the first elevation 6 with the first membrane button 17
  • the first signal means 21 lights up several times, i.e. flashes, when the second switching element 50 is pressed without the first switching element 40 having previously been pressed for longer than the predetermined first time period. This function indicates to the user of the machine tool that in order to activate the machine tool, the first switching element 40 must first be pressed for the first period of time.
  • the first switching element 40 goes out and the second signal means 22 lights up for a predetermined second time period (approx. 3 to 5 seconds). While the second signal means 22 lights up for the second period of time, the second switching element 50 (i.e. the combination of the second elevation 7 with the second membrane button 18) can be pressed in the second direction B. By pressing or actuating the second switching element 50, the machine tool is finally activated, i.e. an electric motor located in the machine tool is switched on. The electric motor is not shown in the figures. However, if the second switching element 50 is not pressed within the second time period, the second signaling means 22 goes out while the first signaling means 21 lights up again and pressing the second switching element 50 no longer leads to activation of the machine tool.
  • a predetermined second time period approximately 3 to 5 seconds
  • the second switching element 50 is pressed again.
  • the first switching element 40 serves as a locking button and the second switching element 50 serves as the actual activation button (or on and off button).

Description

Die vorliegende Erfindung betrifft eine Bedienvorrichtung für eine Werkzeugmaschine, insbesondere ein Schleifgerät, enthaltend wenigstens ein erstes und zweites Schaltelement, wobei das erste Schaltelement in einen ersten und zweiten Modus und das zweite Schaltelement in einen ersten und zweiten Modus einstellbar ist, wobei das erste Schaltelement wenigstens ein erstes Signalmittel enthält zum jeweiligen Signalisieren des ersten oder zweiten Modus und das zweite Schaltelement wenigstens ein zweites Signalmittel enthält zum jeweiligen Signalisieren des ersten oder zweiten Modus.The present invention relates to an operating device for a machine tool, in particular a grinding device, containing at least a first and second switching element, the first switching element being adjustable into a first and second mode and the second switching element being adjustable into a first and second mode, the first switching element being at least a first signaling means for respectively signaling the first or second mode and the second switching element contains at least a second signaling means for respectively signaling the first or second mode.

Der Ein- und Ausschalter (auch Bedienvorrichtung genannt) an handgeführten Werkzeugmaschinen erfordern in der Regel zwei voneinander unabhängige Betätigungen, um die Werkzeugmaschine zu aktivieren. Insbesondere bei Schleif- und Trenngeräten ist ein derartiges Sicherheitsmerkmal gefordert.The on and off switch (also called an operating device) on hand-held machine tools usually requires two independent operations to activate the machine tool. Such a safety feature is particularly required for grinding and cutting devices.

Üblicherweise wird diese Anforderung durch kombinierte mechanische Schalter erfüllt, die zum Einschalten der Werkzeugmaschine zunächst in eine erste Richtung verschoben und anschließend in eine zweite Richtung gebracht werden müssen. Um eine derartige Mechanik an diesen Schalter zu verwirklichen, sind meistens vergleichsweise aufwendige Koppeltriebe oder Kulissenführungen in den Schaltern notwendig.This requirement is usually met by combined mechanical switches, which must first be moved in a first direction and then brought into a second direction in order to switch on the machine tool. In order to implement such a mechanism on these switches, comparatively complex coupling drives or link guides in the switches are usually necessary.

Die Schalter bzw. Bedienvorrichtungen von Werkzeugmaschinen gemäß dem Stand der Technik sind üblicherweise sehr komplex und kostenintensiv konstruiert. Beispielsweise wird in der EP 1 563 962 A1 ein Elektrowerkzeug mit einem Schaltelement zur Betätigung eines Motors offenbart. Dabei ist ein Einschalten des Motors nur dann möglich, wenn das Schaltelement in einer vorgegebenen Weise mehrfach aktiviert wird oder mindestens zwei Schaltelemente gleichzeitig oder in einer vorgegebenen Weise hintereinander betätigt werden.The switches or operating devices of machine tools according to the prior art are usually very complex and cost-intensive. For example, in the EP 1 563 962 A1 discloses a power tool with a switching element for actuating a motor. Switching on the motor is only possible if the switching element is activated several times in a predetermined manner or at least two switching elements are actuated simultaneously or one after the other in a predetermined manner.

Die Aufgabe der vorliegenden Erfindung ist es daher, eine verbesserte Bedienvorrichtung für eine Werkzeugmaschine zur Verfügung zur Verfügung zu stellen.The object of the present invention is therefore to provide an improved operating device for a machine tool.

Die Aufgabe wird gelöst durch den Gegenstand des unabhängigen Anspruchs 1. Vorteilhafte Ausführungsformen des erfindungsgemäßen Gegenstands sind in den abhängigen Ansprüchen enthalten.The object is solved by the subject matter of independent claim 1. Advantageous embodiments of the subject matter according to the invention are contained in the dependent claims.

Die Aufgabe wird dabei gelöst durch das Bereitstellen einer Bedienvorrichtung für eine Werkzeugmaschine, insbesondere ein Schleifgerät, enthaltend wenigstens ein erstes und zweites Schaltelement, wobei das erste Schaltelement in einen ersten und zweiten Modus und das zweite Schaltelement in einen ersten und zweiten Modus einstellbar ist, wobei das erste Schaltelement wenigstens ein erstes Signalmittel enthält zum jeweiligen Signalisieren des ersten oder zweiten Modus und das zweite Schaltelement wenigstens ein zweites Signalmittel enthält zum jeweiligen Signalisieren des ersten oder zweiten Modus.The object is achieved by providing an operating device for a machine tool, in particular a grinding device, containing at least a first and second switching element, the first switching element being adjustable into a first and second mode and the second switching element being adjustable into a first and second mode, wherein the first switching element contains at least one first signaling means for respectively signaling the first or second mode and the second switching element contains at least one second signaling means for respectively signaling the first or second mode.

Erfindungsgemäß ist vorgesehen, dass die Bedienvorrichtung so ausgestaltet ist, dass das zweite Schaltelement von dem ersten Modus in den zweiten Modus erst einstellbar ist, wenn das erste Schaltelement von dem ersten Modus in den zweiten Modus eingestellt ist. Hierdurch kann effektiv verhindert werden, dass der zweite Modus des zweiten Schaltelements versehentlich bzw. von dem Anwender unbeabsichtigt aktiviert wird, ohne zuvor das erste Schaltelement von dem ersten in den zweiten Modus zu bringen. Ein unbeabsichtigter bzw. ungewollter Modus, z.B. Einschalten der Werkzeugmaschine, kann auf diese Weise verhindert und die Sicherheit im Umgang mit einer Werkzeugmaschine erhöht werden.According to the invention it is provided that the operating device is designed such that the second switching element can only be set from the first mode to the second mode when the first switching element is set from the first mode to the second mode. This can effectively prevent the second mode of the second switching element from being activated accidentally or unintentionally by the user without first switching the first switching element from the first to the second mode. An unintentional or unwanted mode, e.g. switching on the machine tool, can be prevented in this way and safety when handling a machine tool can be increased.

Darüber hinaus ist erfindungsgemäß vorgesehen, dass ein Elastomeraufsatz mit einer ersten sowie zweiten Erhebung enthalten ist, wobei das erste Schaltelement die erste Erhebung und das zweite Schaltelement die zweite Erhebung umfasst, wobei ein Gehäuse der Werkzeugmaschine wenigstens eine erste und zweite Öffnung enthält, wobei die erste Erhebung durch die erste Öffnung und die zweite Erhebung durch die zweite Öffnung bedienbar ist, wobei die erste sowie die zweite Erhebung jeweils wenigstens ein Vorsprungelement enthält und die erste sowie die zweite Öffnung jeweils eine Umrandung aufweist, wobei jede Umrandung jeweils wenigstens eine Aussparung enthält, wobei in einem zusammengefügten Zustand der Bedienvorrichtung das wenigstens eine Vorsprungelement in der wenigstens einen Aussparung so positioniert ist, dass ein vollständiges Hindurchführen der ersten oder zweiten Erhebung durch die jeweils erste oder zweite Öffnung verhindert wird. Hierdurch kann verhindert werden, dass eine Erhebung, die sich von dem Elastomeraufsatz ablöst, durch die Öffnung fällt und verloren geht. Ein Ablösen einer Erhebung von dem Elastomeraufsatz kann eine Folge einer übermäßigen Benutzung sein.Furthermore, it is provided according to the invention that an elastomer attachment with a first and second elevation is included, the first switching element comprising the first elevation and the second switching element comprising the second elevation, wherein a housing of the machine tool contains at least a first and second opening, the first The elevation can be operated through the first opening and the second elevation can be operated through the second opening, the first and second elevations each containing at least one projection element and the first and second openings each having a border, each border containing at least one recess, whereby In an assembled state of the operating device, the at least one projection element is positioned in the at least one recess in such a way that the first or second elevation is prevented from completely passing through the respective first or second opening. This can prevent a survey that detaches from the elastomer attachment from falling through the opening and being lost. Separation of a bump from the elastomeric attachment may be a result of excessive use.

Bei dem ersten und zweiten Signalmittel kann es sich ausschließlich um ein optisches Signalmittel, d.h. eine Lampe, oder ausschließlich um ein akustisches Signalmittel handeln. Alternativ kann sowohl das erste als auch das zweite Signalmittel durch ein optisches und akustisches Signalmittel gestaltet sein. Des Weiteren ist es auch möglich, dass das erste Signalmittel ein optisches Signalmittel und das zweite Signalmittel ein akustisches Signalmittel ist. Es ist auch möglich, dass das zweite Signalmittel ein optisches Signalmittel und das erste Signalmittel ein akustisches Signalmittel ist. Das optische oder akustische Signalmittel kann dabei so ausgestaltet sein, dass entweder ein dauerndes bzw. anhaltendes Signal (d.h. Dauerlicht) oder ein unterbrochenes Signal (d.h. Blinken) abgegeben wird.The first and second signaling means can be exclusively an optical signaling means, ie a lamp, or exclusively an acoustic signaling means. Alternatively, both the first and the second signaling means can be designed by an optical and acoustic signaling means. Furthermore, it is also possible for the first signaling means to be an optical signaling means and the second signaling means to be an acoustic signaling means. It is also possible for the second signaling means to be an optical signaling means and the first signaling means to be an optical signaling means is an acoustic signaling device. The optical or acoustic signaling means can be designed in such a way that either a continuous or sustained signal (ie continuous light) or an interrupted signal (ie flashing) is emitted.

Gemäß einer vorteilhaften Ausführungsform der vorliegenden Erfindung kann es möglich sein, dass eine Folientastatur mit wenigstes einer ersten sowie zweiten Folientaste enthalten ist, wobei der Elastomeraufsatz in eine erste Richtung über der Folientastatur positioniert ist, sodass durch eine vorbestimmte Druckkraft in eine zweite Richtung auf die erste Erhebung die erste Folientaste und auf die zweite Erhebung die zweite Folientaste aktivierbar ist. Hierdurch kann eine einfache sowie kostengünstige Bedienvorrichtung gestaltet werden, die gleichzeitig eine Widerstandsfähigkeit gegen in die Bedienvorrichtung eindringende Feuchtigkeit (z.B. Wasser) aufweist. In einer alternativen Ausgestaltungsform kann anstelle der Folientastatur auch eine Platine mit Mikrotastern verwendet werden.According to an advantageous embodiment of the present invention, it may be possible for a membrane keyboard to be included with at least a first and second membrane button, the elastomer attachment being positioned in a first direction above the membrane keyboard, so that by a predetermined pressure force in a second direction on the first The first membrane button can be activated on the survey and the second membrane button can be activated on the second survey. In this way, a simple and cost-effective operating device can be designed, which at the same time has resistance to moisture (e.g. water) penetrating into the operating device. In an alternative embodiment, a circuit board with micro buttons can also be used instead of the membrane keyboard.

Gemäß einer weiteren vorteilhaften Ausführungsform kann vorgesehen sein, dass der Elastomeraufsatz einen Randbereich aufweist, der in eine Richtung eine um eine Außenkontur des Elastomeraufsatz erstreckende Erhebung aufweist, um in einem zusammengebauten Zustand der Bedienvorrichtung insbesondere für die Folientastatur eine Abdichtungswirkung zu erzeugen. Hierdurch ist praktischerweise eine integrierte Abdichtung an dem Elastomeraufsatz gegeben. Eine zusätzliche Abdichtung kann damit vermieden werden. Die um eine Außenkontur des Elastomeraufsatz erstreckende Erhebung kann auch als Wulst oder Rand bezeichnet werden. Die Abdichtung soll insbesondere gegen eindringende Feuchtigkeit wirken.According to a further advantageous embodiment, it can be provided that the elastomer attachment has an edge region which has an elevation extending in one direction around an outer contour of the elastomer attachment in order to produce a sealing effect, in particular for the membrane keyboard, in an assembled state of the operating device. This practically creates an integrated seal on the elastomer attachment. This means that additional sealing can be avoided. The elevation extending around an outer contour of the elastomer attachment can also be referred to as a bead or edge. The seal should be particularly effective against penetrating moisture.

Entsprechend einer weiteren vorteilhaften Ausführungsform der vorliegenden Erfindung kann es möglich sein, dass das erste Schaltelement durch die erste Erhebung auf dem Elastomeraufsatz sowie die erste Folientaste und das zweite Schaltelement durch die zweite Erhebung auf dem Elastomeraufsatz sowie die zweite Folientaste verwirklicht ist und wobei der Elastomeraufsatz so zu der ersten und zweiten Öffnung des Gehäuses positioniert ist, dass die erste Erhebung durch die erste Öffnung und die zweite Erhebung durch die zweite Öffnung bedienbar ist. Entsprechend einer weiteren vorteilhaften Ausführungsform der vorliegenden Erfindung kann es möglich sein, dass der erste Modus des ersten Schaltelements einer Blockadefunktion und der zweite Modus des ersten Schaltelements einer Freigabefunktion entspricht und wobei der erste Modus des zweiten Schaltelements einer Ruhefunktion und der zweite Modus des zweiten Schaltelements einer Arbeitsfunktion entspricht. Hierdurch ist sichergestellt, dass ein unkontrolliertes Einschalten der Werkzeugmaschine verhindert wird, wenn lediglich ein Schaltelement betätigt wird.According to a further advantageous embodiment of the present invention, it may be possible for the first switching element to be implemented by the first elevation on the elastomeric attachment and the first membrane button and the second switching element through the second elevation on the elastomeric attachment and the second membrane button and the elastomeric attachment being so is positioned to the first and second openings of the housing so that the first elevation can be operated through the first opening and the second elevation can be operated through the second opening. According to a further advantageous embodiment of the present invention, it may be possible that the first mode of the first switching element corresponds to a blocking function and the second mode of the first switching element corresponds to an enabling function and wherein the first mode of the second switching element corresponds to a rest function and the second mode of the second switching element corresponds to a Work function corresponds. This ensures that an uncontrolled Switching on the machine tool is prevented if only one switching element is actuated.

Gemäß einer vorteilhaften Ausführungsform der vorliegenden Erfindung kann es möglich sein, dass das erste Schaltelement erst von dem ersten Modus in den zweiten Modus einstellbar ist, wenn das erste Schaltelement länger als eine vorbestimmte Zeitdauer betätigt wird. Hierdurch kann sichergestellt werden, dass das erste Schaltelement nicht unbeabsichtigt von dem ersten in den zweiten Modus wechselt, wenn das erste Schaltelement nur kürzer als eine vorbestimmte Zeitdauer betätigt wird. Durch die Betätigung des ersten Schaltelements länger als eine vorbestimmte Zeitdauer kann der Werkzeugmaschine angezeigt werden, dass der Anwender bewusst das erste Schaltelement betätigt und auch den Wechsel von dem ersten in den zweiten Modus beabsichtigt.According to an advantageous embodiment of the present invention, it may be possible for the first switching element to be adjustable from the first mode to the second mode only when the first switching element is actuated for longer than a predetermined period of time. This can ensure that the first switching element does not unintentionally change from the first to the second mode if the first switching element is only actuated for less than a predetermined period of time. By actuating the first switching element for longer than a predetermined period of time, the machine tool can be informed that the user is consciously operating the first switching element and also intends to change from the first to the second mode.

Darüber hinaus kann es gemäß einer vorteilhaften Ausführungsform der vorliegenden Erfindung auch möglich sein, dass das erste Schaltelement von dem zweiten Modus wieder in den ersten Modus eingestellt wird, wenn das zweite Schaltelement erst nach Ablauf einer vorbestimmten Zeitdauer betätigt wird. Hierdurch kann sichergestellt werden, dass das erste Schaltelement nicht dauerhaft in dem zweiten Modus verbleibt und so bei einer unachtsamen Handhabung durch einen Anwender das zweite Schaltelement und damit die Werkzeugmaschine aktivierbar bzw. in den zweiten Modus verstellbar ist.In addition, according to an advantageous embodiment of the present invention, it may also be possible for the first switching element to be set from the second mode back to the first mode if the second switching element is only actuated after a predetermined period of time has elapsed. This can ensure that the first switching element does not remain permanently in the second mode and that the second switching element and thus the machine tool can be activated or adjusted to the second mode in the event of careless handling by a user.

Entsprechend einer weiteren vorteilhaften Ausführungsform der vorliegenden Erfindung kann es möglich sein, dass das erste Signalmittel den ersten Modus des ersten Schaltelements anzeigt, wenn das zweite Schaltelement betätigt ist. Hierdurch kann dem Anwender auf einfache Art und Weise angezeigt werden, dass für einen Moduswechsel (d.h. von dem ersten in den zweiten Modus) des zweiten Schaltelements zuvor das erste Schaltelement von dem ersten in den zweiten Modus gebracht werden muss.According to a further advantageous embodiment of the present invention, it may be possible for the first signal means to display the first mode of the first switching element when the second switching element is actuated. This allows the user to be shown in a simple manner that in order to change the mode (i.e. from the first to the second mode) of the second switching element, the first switching element must first be brought from the first to the second mode.

Gemäß einer vorteilhaften Ausführungsform der vorliegenden Erfindung kann es möglich sein, dass das erste Signalmittel den zweiten Modus des ersten Schaltelements anzeigt, wenn das erste Schaltelement länger als eine vorbestimmte Zeitdauer betätigt ist. Hierdurch kann dem Anwender der Werkzeugmaschine auf einfache Art und Weise angezeigt werden, dass das erste Schaltelement lang genug betätigt wurde und der zweite Modus nun für das erste Schaltelement eingestellt ist.According to an advantageous embodiment of the present invention, it may be possible for the first signal means to indicate the second mode of the first switching element when the first switching element is actuated for longer than a predetermined period of time. This allows the user of the machine tool to be shown in a simple manner that the first switching element has been actuated long enough and the second mode is now set for the first switching element.

Entsprechend einer weiteren vorteilhaften Ausführungsform der vorliegenden Erfindung kann es möglich sein, dass das zweite Signalmittel den ersten Modus des zweiten Schaltelements anzeigt, wenn sich das erste Schaltelement in dem zweiten Modus befindet. Hierdurch kann dem Anwender der Werkzeugmaschine auf einfache Art und Weise angezeigt werden, dass das zweite Schaltelement nunmehr bereit ist, um von dem ersten in den zweiten Modus eingestellt zu werden.According to a further advantageous embodiment of the present invention, it may be possible for the second signal means to display the first mode of the second switching element, when the first switching element is in the second mode. This allows the user of the machine tool to be shown in a simple manner that the second switching element is now ready to be set from the first to the second mode.

Weitere Vorteile ergeben sich aus der folgenden Figurenbeschreibung. In den Figuren sind verschiedene Ausführungsbeispiele der vorliegenden Erfindung dargestellt. Die Figuren, die Beschreibung und die Ansprüche enthalten zahlreiche Merkmale in Kombination. Der Fachmann wird die Merkmale zweckmässigerweise auch einzeln betrachten und zu sinnvollen weiteren Kombinationen zusammenfassen.Further advantages result from the following description of the figures. Various exemplary embodiments of the present invention are shown in the figures. The figures, the description and the claims contain numerous features in combination. The person skilled in the art will also expediently consider the features individually and combine them into further sensible combinations.

In den Figuren sind gleiche und gleichartige Komponenten mit gleichen Bezugszeichen beziffert.In the figures, identical and similar components are numbered with the same reference numerals.

Es zeigen:

Fig. 1
eine perspektivische Ansicht einer Bedienvorrichtung an einem Gehäuse einer Werkzeugmaschine gemäß einer Ausführungsform der vorliegenden Erfindung;
Fig. 2
eine perspektivische Ansicht der Bedienvorrichtung mit einem Elastomeraufsatz und einer Folientastatur in einem auseinander gebauten Zustand;
Fig. 3a
eine Draufsicht auf den Elastomeraufsatz; und
Fig. 3b
eine Seitenansicht auf den Elastomeraufsatz.
Show it:
Fig. 1
a perspective view of an operating device on a housing of a machine tool according to an embodiment of the present invention;
Fig. 2
a perspective view of the operating device with an elastomer attachment and a membrane keyboard in a disassembled state;
Fig. 3a
a top view of the elastomer attachment; and
Fig. 3b
a side view of the elastomer attachment.

Ausführungsbeispiele:Examples:

Figur 1 zeigt eine Bedienvorrichtung 1 für eine Werkzeugmaschine, insbesondere ein Schleifgerät. Bei der Werkzeugmaschine kann es sich jedoch auch um jede andere geeignete Werkzeugmaschine handeln. Die Werkzeugmaschine ist in den Figuren nicht vollständig dargestellt. Es ist lediglich ein Teil des Gehäuses 2 der Werkzeugmaschine in den Figuren dargestellt. Figure 1 shows an operating device 1 for a machine tool, in particular a grinder. However, the machine tool can also be any other suitable machine tool. The machine tool is not completely shown in the figures. Only part of the housing 2 of the machine tool is shown in the figures.

Die Bedienvorrichtung 1 enthält im Wesentlichen eine Elastomeraufsatz 3 und eine Folientastatur 4.The operating device 1 essentially contains an elastomer attachment 3 and a membrane keyboard 4.

Der Elastomeraufsatz 3 enthält wiederum im Wesentlichen eine Grundplatte 5 und eine Anzahl an Erhebungen (vgl. Figur 2 und 3). Der Elastomeraufsatz 3 ist aus einem weichen, flexiblen Kunststoff gefertigt. Bei dem Kunststoff kann es sich um Silikon oder dergleichen handeln. Wie in Figur 2 gezeigt, weist der Elastomeraufsatz 3 eine erste, zweite, dritte, vierte, fünfte, sechste, siebte, achte, neunte, zehnte und elfte Erhebung 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 auf. Die erste, zweite, dritte und vierte Erhebung 6, 7, 8, 9 sind jeweils zylindrisch und massiv ausgestaltet und dienen jeweils als Betätigungselement. Die fünfte bis elfte Erhebung 10, 11, 12, 13, 14, 15, 16 dient als Anzeigeelement.The elastomer attachment 3 essentially contains a base plate 5 and a number of elevations (cf. Figure 2 and 3 ). The elastomer attachment 3 is made of a soft, flexible plastic. The plastic can be silicone or the like. As in Figure 2 shown, the elastomer attachment 3 has a first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth and eleventh elevation 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 on. The first, second, third and fourth elevations 6, 7, 8, 9 are each cylindrical and solid and each serve as an actuating element. The fifth to eleventh surveys 10, 11, 12, 13, 14, 15, 16 serve as a display element.

Optional kann der Elastomeraufsatz 3 im Bereich der Betätigungselemente auch mit einer harten Kappe versehen sein.Optionally, the elastomer attachment 3 can also be provided with a hard cap in the area of the actuating elements.

Die Folientastatur 4 enthält im Wesentlichen eine erste, zweite, dritte und vierte Folientaste 17, 18, 19, 20 sowie ein erstes und zweites Signalmittel 21, 22. Des Weiteren ist eine Leuchtskala mit fünf Leuchtstufen 23 auf der Folientastatur 4 enthalten. Die Signalmittel 21, 22, 23 sind jeweils in Form einer LED (Leuchtdiode) ausgestaltet. An einem Ende 4a weist die Folientastatur 4 eine Flachbandleitung 24 als elektrischen Anschluss auf.The membrane keyboard 4 essentially contains a first, second, third and fourth membrane key 17, 18, 19, 20 as well as a first and second signaling means 21, 22. Furthermore, a light scale with five light levels 23 is included on the membrane keyboard 4. The signaling means 21, 22, 23 are each designed in the form of an LED (light-emitting diode). At one end 4a, the membrane keyboard 4 has a ribbon cable 24 as an electrical connection.

Die Werkzeugmaschine enthält ein Gehäuse 2, welches im Wesentlichen eine erste und zweite Gehäusehälfte 2a, 2b enthält. Sowohl der Elastomeraufsatz 3 als auch die Folientastatur 4 sind in einem zusammengebauten Zustand zwischen der ersten und zweiten Gehäusehälfte 2a, 2b positioniert und gehalten. Wie in Figur 2 dargestellt, weist die erste Gehäusehälfte 2a elf Öffnungen 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35 auf. Die elf Öffnungen 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35 in der ersten Gehäusehälfte 2a dienen zur Aufnahme der elf Erhebungen 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 des Elastomeraufsatzes 3, sodass ein Anwender die Öffnungen die als Betätigungselemente ausgestalteten Erhebungen 6, 7, 8, 9 zu aktivieren.The machine tool contains a housing 2, which essentially contains a first and second housing half 2a, 2b. Both the elastomer attachment 3 and the membrane keyboard 4 are positioned and held in an assembled state between the first and second housing halves 2a, 2b. As in Figure 2 shown, the first housing half 2a has eleven openings 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35. The eleven openings 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35 in the first housing half 2a serve to accommodate the eleven elevations 6, 7, 8, 9, 10, 11, 12, 13 , 14, 15, 16 of the elastomer attachment 3, so that a user can use the openings to activate the elevations 6, 7, 8, 9 designed as actuating elements.

Wie in Figur 2 ebenfalls dargestellt, weist die erste, zweite, dritte und vierte Öffnung 25, 26, 27, 28 der ersten Gehäusehälfte 2a eine Umrandung 36 auf. Jede Umrandung 36 enthält eine erste und zweite Aussparung 36a, 36b. Jede Aussparung 36a, 36b erstreckt sich jedoch nicht über die gesamte Höhe der Umrandung 36, sodass die Aussparung 36a, 36b im Wesentlichen als ein Schlitz oder Einkerbung in der Umrandung 36 ausgestaltet ist. Die erste, zweite, dritte und vierte Erhebung 6, 7, 8, 9 enthält jeweils ein erstes und zweites Vorsprungelement 37, 38. Das erste Vorsprungelement 37 der Erhebung 6, 7, 8, 9 ist dabei so ausgestaltet, dass dieses in die jeweilige erste Aussparung 36a, 36b der Öffnung 25, 26, 27, 28 eingeführt werden kann. Darüber hinaus ist das zweite Vorsprungelement 36a, 36b der Erhebung 6, 7, 8, 9 so ausgestaltet, dass dieses in die jeweilige zweite Aussparung 36b der Öffnung 25, 26, 27, 28 eingeführt werden kann. Wenn die Erhebungen 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 des Elastomeraufsatzes 3 in die jeweiligen Öffnungen 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35 der ersten Gehäusehälfte 2a aufgenommen sind, sind die Vorsprungelemente 37, 38 in die jeweiligen Aussparungen 36a, 36b eingeführt. Das Zusammenwirken der Vorsprungelemente 37, 38 mit den Aussparungen 36a, 36b verhindert, dass eine Erhebung 6, 7, 8, 9, die sich von der Grundplatte 5 des Elastomeraufsatzes 3 löst, durch die Öffnung 25, 26, 27, 28 hindurchfallen kann. Hierdurch wird auch eine von der Grundplatte 5 abgelöste Erhebung 6, 7, 8, 9 noch in der Öffnung 25, 26, 27, 28 der ersten Gehäusehälfte 2a gehalten und damit auch noch funktionsfähig ist. Ein Ablösen einer Erhebung 6, 7, 8, 9 von der Grundplatte 5 kann aufgrund von Verschleiß geschehen.As in Figure 2 Also shown, the first, second, third and fourth openings 25, 26, 27, 28 of the first housing half 2a have a border 36. Each border 36 contains a first and second recess 36a, 36b. However, each recess 36a, 36b does not extend over the entire height of the border 36, so that the recess 36a, 36b is essentially designed as a slot or notch in the border 36. The first, second, third and fourth elevations 6, 7, 8, 9 each contain a first and second projection element 37, 38. The first projection element 37 of the elevation 6, 7, 8, 9 is designed so that it fits into the respective first recess 36a, 36b of the opening 25, 26, 27, 28 can be inserted. In addition, the second projection element 36a, 36b of the elevation 6, 7, 8, 9 is designed so that it can be inserted into the respective second recess 36b of the opening 25, 26, 27, 28. If the elevations 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 of the elastomer attachment 3 into the respective openings 25, 26, 27, 28, 29, 30, 31, 32, 33, 34 , 35 of the first housing half 2a are accommodated, the projection elements 37, 38 are inserted into the respective recesses 36a, 36b. The interaction of the projection elements 37, 38 with the recesses 36a, 36b prevents a survey 6, 7, 8, 9, which detaches from the base plate 5 of the elastomer attachment 3, from falling through the opening 25, 26, 27, 28. As a result, an elevation 6, 7, 8, 9 detached from the base plate 5 is still held in the opening 25, 26, 27, 28 of the first housing half 2a and is therefore still functional. A elevation 6, 7, 8, 9 can become detached from the base plate 5 due to wear.

Wie bereits vorstehend erwähnt befinden sich der Elastomeraufsatz 3 sowie die Folientastatur 4 in einem zusammengebauten Zustand zwischen der ersten und zweiten Gehäusehälfte 2a, 2b. Die erste und zweite Gehäusehälfte 2a, 2b sind dabei mit einer Schraubverbindung miteinander wiederlösbar verbunden. Der Elastomeraufsatz befindet sich dabei in einer ersten Richtung A über der Folientastatur 4. Es ist dabei zu beachten, dass der Elastomeraufsatz 3 so über der Folientastatur 4 angeordnet bzw. positioniert ist, dass die als Betätigungselement ausgestalteten Erhebungen 6, 7, 8, 9 (erste, zweite, dritte und vierte Erhebung) jeweils entsprechend in die Richtung A über der ersten, zweiten, dritten und vierten Folientaste 17, 18, 19, 20 positioniert sind. Hierdurch können, wenn der Anwender der Werkzeugmaschine einen gewissen Druck auf die als Betätigungselement ausgestalteten Erhebungen 6, 7, 8, 9 ausübt, die in der zweiten Richtung B unterhalb des Elastomeraufsatz 3 befindlichen Folientasten 6, 7, 8, 9 aktiviert werden. Des Weiteren befindet sich in dem zusammengebauten Zustand die als Anzeigeelement ausgestaltete fünfte bis elfte Erhebung 10, 11, 12, 13, 14, 15, 16 über den Signalmitteln der Folientastatur 4. Das Material des Elastomeraufsatz 3 ist lichtdurchlässig. Die obere Fläche der Erhebung 10, 11, 12, 13, 14, 15, 16 ist jedoch lichtundurchlässig beschichtet. In den Anzeigebereichen der fünfte bis elfte Erhebung 10, 11, 12, 13, 14, 15, 16 ist die Beschichtung entfernt, sodass das Licht des darunter liegenden Signalmittel durchscheinen kann. Hierdurch kann der Anwender der Werkzeugmaschine ein Aufleuchten der Signalmittel an der Außenseite des Gehäuses 2 der Werkzeugmaschine erkennen.As already mentioned above, the elastomer attachment 3 and the membrane keyboard 4 are in an assembled state between the first and second housing halves 2a, 2b. The first and second housing halves 2a, 2b are releasably connected to one another with a screw connection. The elastomer attachment is located in a first direction A above the membrane keyboard 4. It should be noted that the elastomer attachment 3 is arranged or positioned above the membrane keyboard 4 in such a way that the elevations 6, 7, 8, 9 designed as an actuating element ( first, second, third and fourth surveys) are each positioned accordingly in the direction A above the first, second, third and fourth membrane buttons 17, 18, 19, 20. As a result, when the user of the machine tool exerts a certain amount of pressure on the elevations 6, 7, 8, 9 designed as an actuating element, the membrane buttons 6, 7, 8, 9 located in the second direction B below the elastomer attachment 3 can be activated. Furthermore, in the assembled state, the fifth to eleventh elevations 10, 11, 12, 13, 14, 15, 16, designed as a display element, are located above the signaling means of the membrane keyboard 4. The material of the elastomer attachment 3 is translucent. However, the upper surface of the elevation 10, 11, 12, 13, 14, 15, 16 is coated so that it is opaque. In the display areas of the fifth to eleventh elevations 10, 11, 12, 13, 14, 15, 16, the coating has been removed so that the light from the signaling means underneath can shine through. This allows the Users of the machine tool can see that the signaling means on the outside of the housing 2 of the machine tool light up.

Eine Kombination von einer als Betätigungselement ausgestalteten Erhebung 6, 7, 8, 9 (d.h. erste bis vierte Erhebung) mit einer der ersten bis vierten Folientaste 17, 18, 19, 20 dient als Schaltelement. Das erste Schaltelement 40 enthält daher die erste als Betätigungselement ausgestaltete Erhebung 6 sowie die erste Folientaste 17. Des Weiteren enthält das zweite Schaltelement 50 die zweite als Betätigungselement ausgestaltete Erhebung 7 sowie die zweite Folientaste 18.A combination of an elevation 6, 7, 8, 9 (i.e. first to fourth elevation) designed as an actuating element with one of the first to fourth membrane buttons 17, 18, 19, 20 serves as a switching element. The first switching element 40 therefore contains the first elevation 6 designed as an actuating element and the first membrane button 17. Furthermore, the second switching element 50 contains the second elevation 7 designed as an actuating element and the second membrane button 18.

Zur Aktivierung der Werkzeugmaschine wird zunächst das erste Schaltelement 40 (d.h. die Kombination von der ersten Erhebung 6 mit der ersten Folientaste 17) für eine gewisse erste Zeitdauer (ca. 10 bis 20 Millisekunden) in die zweite Richtung B gedrückt. Darüber hinaus leuchtet das erste Signalmittel 21 mehrere Male auf, d.h. blinkt, wenn das zweite Schaltelement 50 gedrückt wird, ohne dass zuvor das erste Schaltelement 40 länger als die vorbestimmte erste Zeitdauer gedrückt wurde. Mit dieser Funktion wird dem Anwender der Werkzeugmaschine angezeigt, dass zum Aktivieren der Werkzeugmaschine zunächst das erste Schaltelement 40 für die erste Zeitdauer gedrückt werden muss. Wenn das erste Schaltelement 40 länger als die vorbestimmte erste Zeitdauer gedrückt wurde, erlischt das erste Signalmittel 21 und das zweite Signalmittel 22 leuchtet für eine vorbestimmte zweite Zeitdauer (ca. 3 bis 5 Sekunden) auf. Während das zweite Signalmittel 22 für die zweite Zeitdauer aufleuchtet, kann das zweite Schaltelement 50 (d.h. die Kombination von der zweiten Erhebung 7 mit der zweiten Folientaste 18) in die zweite Richtung B gedrückt werden. Durch das Drücken bzw. Betätigen des zweiten Schaltelements 50 wird schließlich die Werkzeugmaschine aktiviert, d.h. ein in der Werkzeugmaschine befindlicher Elektromotor eingeschaltet. Der Elektromotor ist in den Figuren nicht dargestellt. Wenn jedoch das zweite Schaltelement 50 nicht innerhalb der zweiten Zeitdauer gedrückt wird, erlischt das zweite Signalmittel 22 während das erste Signalmittel 21 wieder aufleuchtet und ein Drücken des zweiten Schaltelements 50 führt nicht mehr zu einer Aktivierung der Werkzeugmaschine.To activate the machine tool, the first switching element 40 (i.e. the combination of the first elevation 6 with the first membrane button 17) is first pressed in the second direction B for a certain first period of time (approx. 10 to 20 milliseconds). In addition, the first signal means 21 lights up several times, i.e. flashes, when the second switching element 50 is pressed without the first switching element 40 having previously been pressed for longer than the predetermined first time period. This function indicates to the user of the machine tool that in order to activate the machine tool, the first switching element 40 must first be pressed for the first period of time. If the first switching element 40 has been pressed for longer than the predetermined first time period, the first signal means 21 goes out and the second signal means 22 lights up for a predetermined second time period (approx. 3 to 5 seconds). While the second signal means 22 lights up for the second period of time, the second switching element 50 (i.e. the combination of the second elevation 7 with the second membrane button 18) can be pressed in the second direction B. By pressing or actuating the second switching element 50, the machine tool is finally activated, i.e. an electric motor located in the machine tool is switched on. The electric motor is not shown in the figures. However, if the second switching element 50 is not pressed within the second time period, the second signaling means 22 goes out while the first signaling means 21 lights up again and pressing the second switching element 50 no longer leads to activation of the machine tool.

Um die Aktivierung der Werkzeugmaschine bzw. des Elektromotors zu beenden, wird das zweite Schaltelement 50 erneut gedrückt.In order to end the activation of the machine tool or the electric motor, the second switching element 50 is pressed again.

Das erste Schaltelement 40 dient als Sperrtaste und das zweite Schaltelement 50 dient als eigentliche Aktivierungstaste (bzw. Ein- und Ausschalttaste).The first switching element 40 serves as a locking button and the second switching element 50 serves as the actual activation button (or on and off button).

Claims (8)

  1. Operator control device (1) for a power tool, in particular a sander, containing at least a first and a second switching element (40, 50), wherein the first switching element (40) can be adjusted to a first and a second mode and the second switching element (50) can be adjusted to a first and a second mode, wherein the first switching element (40) contains at least one first signalling means (21) for respectively signalling the first or the second mode, wherein the operator control device (1) is configured such that the second switching element (50) can only be adjusted from the first mode to the second mode if the first switching element (40) is adjusted from the first mode to the second mode, characterized in that the second switching element (50) contains at least one second signalling means (22) for respectively signalling the first or the second mode, and in that an elastomeric attachment (3) with a first and a second raised portion (6, 7) is present, wherein the first switching element (40) comprises the first raised portion (6) and the second switching element (50) comprises the second raised portion (7), wherein a housing (2) of the power tool contains at least a first and a second opening (25, 26), wherein the first raised portion (6) can be operated through the first opening (25) and the second raised portion (7) can be operated through the second opening (26), wherein the first and the second raised portion (6, 7) each contain a projection element (37, 38) and the first and the second opening (25, 26) each have a border (36), wherein each border (36) has at least one cutout (36a, 36b), wherein, in an assembled state of the operator control device (1), the at least one projection element (37, 38) is positioned in the at least one cutout (36a, 36b) such that complete passage of the first or second raised portion (6, 7) through the respectively first or second opening (25, 26) is prevented.
  2. Operator control device (1) according to Claim 1, characterized in that a membrane keypad (4) with at least a first and a second membrane key (17, 18) is present, wherein the elastomeric attachment (3) is positioned above the membrane keypad (4) in a first direction A, so that the first membrane key (17) can be activated by a predetermined compressive force in a second direction B on the first raised portion (6) and the second membrane key (18) can be activated by a predetermined compressive force in a second direction B on the second raised portion (7).
  3. Operator control device (1) according to Claim 2, characterized in that the first switching element (40) is realized by the first raised portion (6) on the elastomeric attachment (3) and the first membrane key (17) and the second switching element (50) is realized by the second raised portion (7) on the elastomeric attachment (3) and the second membrane key (18), and wherein the elastomeric attachment (3) is positioned in relation to the first and the second opening (25, 26) of the housing (2) such that the first raised portion (6) can be operated through the first opening (25) and the second raised portion (7) can be operated through the second opening (26).
  4. Operator control device (1) according to at least one of Claims 1 to 3, characterized in that the first mode of the first switching element (40) corresponds to a block function and the second mode of the first switching element (40) corresponds to a release function, and wherein the first mode of the second switching element (50) corresponds to an inoperative function and the second mode of the second switching element (50) corresponds to a work function.
  5. Operator control device (1) according to at least one of Claims 1 to 4, characterized in that the first switching element (40) can only be adjusted from the first mode to the second mode if the first switching element (40) is operated for longer than a predetermined time period.
  6. Operator control device (1) according to at least one of Claims 1 to 5, characterized in that the first signalling means (21) indicates the first mode of the first switching element (40) if the second switching element (50) is operated.
  7. Operator control device (1) according to at least one of Claims 1 to 6, characterized in that the first signalling means (21) indicates the second mode of the first switching element (40) if the first switching element (40) is operated for longer than a predetermined time period.
  8. Operator control device (1) according to at least one of Claims 1 to 7, characterized in that the second signalling means (22) indicates the first mode of the second switching element (50) if the first switching element (40) is in the second mode.
EP17797085.2A 2016-10-27 2017-10-25 Switch device for machine tool Active EP3533076B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP16195891.3A EP3316270A1 (en) 2016-10-27 2016-10-27 Switch device for machine tool
PCT/EP2017/077273 WO2018077929A1 (en) 2016-10-27 2017-10-25 Switch device for a machine tool

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EP3533076A1 EP3533076A1 (en) 2019-09-04
EP3533076B1 true EP3533076B1 (en) 2023-11-29

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EP16195891.3A Withdrawn EP3316270A1 (en) 2016-10-27 2016-10-27 Switch device for machine tool
EP17797085.2A Active EP3533076B1 (en) 2016-10-27 2017-10-25 Switch device for machine tool

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US (1) US11189437B2 (en)
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JP (1) JP2019534796A (en)
CN (1) CN109891541B (en)
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Publication number Publication date
US20190252133A1 (en) 2019-08-15
EP3533076A1 (en) 2019-09-04
EP3316270A1 (en) 2018-05-02
WO2018077929A1 (en) 2018-05-03
US11189437B2 (en) 2021-11-30
CN109891541A (en) 2019-06-14
CN109891541B (en) 2021-10-15
JP2019534796A (en) 2019-12-05

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