EP2269270A1 - Plug arrangement in a machine tool, in particular in a handheld machine tool - Google Patents

Plug arrangement in a machine tool, in particular in a handheld machine tool

Info

Publication number
EP2269270A1
EP2269270A1 EP09732137A EP09732137A EP2269270A1 EP 2269270 A1 EP2269270 A1 EP 2269270A1 EP 09732137 A EP09732137 A EP 09732137A EP 09732137 A EP09732137 A EP 09732137A EP 2269270 A1 EP2269270 A1 EP 2269270A1
Authority
EP
European Patent Office
Prior art keywords
plug part
machine tool
plug
housing
drive motor
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.)
Granted
Application number
EP09732137A
Other languages
German (de)
French (fr)
Other versions
EP2269270B1 (en
Inventor
Michael Habele
Marcus Schuller
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 EP2269270A1 publication Critical patent/EP2269270A1/en
Application granted granted Critical
Publication of EP2269270B1 publication Critical patent/EP2269270B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R31/00—Coupling parts supported only by co-operation with counterpart
    • H01R31/06—Intermediate parts for linking two coupling parts, e.g. adapter
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/64—Means for preventing incorrect coupling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/64—Means for preventing incorrect coupling
    • H01R13/645—Means for preventing incorrect coupling by exchangeable elements on case or base
    • H01R13/6453—Means for preventing incorrect coupling by exchangeable elements on case or base comprising pin-shaped elements, capable of being orientated in different angular positions around their own longitudinal axes, e.g. pins with hexagonal base

Definitions

  • Plug arrangement in a machine tool in particular in a hand tool
  • the invention relates to a connector assembly in one
  • Machine tool in particular in a hand tool such. an angle grinder, which has a primary plug part, which is assigned to a drive motor of the machine tool, and a secondary plug part, which is assigned to a further component in the machine tool.
  • Angle grinder which have in a housing an electric drive motor, via which a tool shaft is driven with tool attached thereto.
  • the electric drive motor is switched on and off by means of a manual switch, which is usually connected via a plug part with an electronic component for controlling the drive motor.
  • a speed sensor may be associated with the electric drive motor, wherein the sensor signals representing the rotational speed are supplied to the electronic component via a further plug part.
  • the invention is based on the object, a plug assembly in a machine tool, especially in a hand tool, with simple design measures in such a way that the variety of parts reduced without limiting the functionality and the life is increased.
  • the plug assembly according to the invention is used in a machine tool, which is preferably a hand tool such. an angle grinder acts.
  • the machine tool has in a housing a drive motor, in particular an electric drive motor, which is assigned a primary plug part, wherein electrical connection cables are guided between the drive motor and the primary plug part.
  • a secondary plug part is provided which is assigned to a further unit or electrical component of the handheld power tool, which in a preferred embodiment is a speed sensor for determining the engine speed of the drive motor. Between this further unit and the secondary connector part are also electrical
  • the primary plug part and the secondary plug part are combined to form a common plug part.
  • This embodiment has the advantage that the plug arrangement with the primary plug part and the secondary plug part already as a common plug part in the housing of the machine tool can be used and mounted there.
  • the common plug part provides less attack surface for the deposition of dirt, in particular of abrasive dirt particles, which arise during the machining of a workpiece.
  • primary plug part and secondary plug part are connected to one another and in this way form the common plug part.
  • the secondary plug part can be placed on the primary plug part by means of a plug connection, wherein also other connection measures between the primary and secondary plug part come into consideration, such as, for example, gluing, stapling or the like.
  • the plug part is formed in one piece, so that primary and secondary plug part have a common plug housing.
  • This advantageously consists of plastic and can be produced for example by way of injection molding.
  • common plug part coding elements can be arranged over which the installation position of the plug part in the housing is clearly defined.
  • the coding element can be embodied as a coding web projecting beyond the outside of the common plug part, which corresponds in particular to an associated coding recess in the housing, so that assembly of the common plug part in the housing is only possible if the coding elements engage with one another on the plug part and on the housing.
  • Another way to clearly define the mounting position is as a coding the outer side of the plug part axially superior coding - A -
  • Primary connector part and the secondary connector part on the same side of the common connector part superimposed insertion which are provided either for mounting in the housing or for the electrical connection cable.
  • the housing of the machine tool is constructed in several parts and in particular has a handle housing and a motor housing for receiving the drive motor.
  • the common plug part is preferably arranged in the handle housing, wherein the electrical
  • a damping element may be arranged to effectively reduce vibrations resulting from the machining of the workpiece and the switched-on drive motor.
  • the suitably annular damping element preferably has a central recess and a radial slot which is up to the centric
  • Recess is sufficient so that the connecting cable between the male member and the drive motor and the speed sensor can be inserted laterally over the radial slot until reaching the central recess in the damping element.
  • the electrical connection cables outside the damping element it is also possible for the electrical connection cables outside the damping element to bridge the distance between the plug element and the drive motor or speed sensor.
  • FIG. 1 is a perspective view of a
  • Hand tool comprising a two-part handle housing and a motor housing for receiving an electric drive motor
  • FIG. 2 is a side view of the open handle housing, with a speed sensor located upstream of the handle housing, via an electrical connection cable with an electronic component in
  • Fig. 3 is a perspective view of the open
  • Handle housing with the electronic component, a manual switch for actuating the electrical
  • FIG. 4 is a similar view as FIG. 3, but from a different perspective
  • Insertion openings which additionally have the task of coding elements which fix the installation position
  • the plug part with an eccentrically arranged coding 10 shows the plug part with a Kodierbolzen non-circular cross-section
  • Fig. 11 is a between engine and handle housing exactly, which a
  • a hand tool 1 is shown in a schematic manner, which is, for example, an angle grinder.
  • the housing 2 of the portable power tool 1 is constructed in several parts and comprises a motor housing 3 and a handle housing 4 to be connected to the motor housing, consisting of two handle half shells 4a and 4b.
  • an electric drive motor 5 is accommodated, which drives a rotatably mounted tool shaft 7 via a drive connection 6, which carrier of a tool 8 is.
  • the motor housing 3 and the handle housing 4 are connected to each other via a connecting device 9.
  • an adapter part which preferably has a damping element for vibration damping.
  • a speed sensor 11 is connected to an electronic component 12.
  • the speed sensor 11 is located in the motor housing 3 and is assigned to the electric drive motor for speed measurement, the
  • a plug member 15 is arranged in the handle housing 4, which is constructed in two parts and a primary plug part 16 and a secondary plug part 17 includes.
  • Primary plug part 16 and secondary plug part 17 are integrally formed and have a common, the plug part 15 forming housing.
  • the primary plug part 16 is assigned to the electric drive motor, the secondary plug part 17 to the speed sensor 11 (FIG. 2).
  • Both plug parts 16, 17 are also connected via electrical connection cable with the electronic component 12, which is located in the handle housing 4 directly below the plug part 15.
  • the plug part 15 is in the upper portion of the handle housing 4 immediately above a manual switch 14 for on and
  • the plug part 15 has side cheeks 18, which protrude laterally on the housing of the plug part and can be bent against a force acting in the transverse direction spring force. In the side cheeks 18, a receiving opening is introduced, which can be pushed onto an associated survey in the handle housing, whereby the plug member 15 assumes a detent position in the handle housing.
  • the installation position of the plug part 15 in Determine the housing of the power tool exactly. Only with the correct mounting position, a collision of Kodierstege 19 is avoided with components in the housing. It may be expedient to provide the Kodierstegen 19 associated Kodierausappels principle in the housing, in which engage the Kodierstege in the correct mounting position.
  • insertion openings 20 On the front side of the primary plug part 16 are insertion openings 20, which preferably serve for fastening the plug part, wherein in the mounted position mounting elements, which are arranged in the housing, protrude into the insertion openings 20. If appropriate, the insertion openings 20 also have the function of receiving electrical connection elements.
  • insertion openings 21 are inserted, which serve to receive the electrical connection cable.
  • the insertion openings 21 on the secondary plug part 17 are directed to the same end side as the insertion openings 20 on the primary plug part 16, however, the front side plane of the secondary plug part 17 is arranged offset to the front side plane of the primary plug part 16.
  • both the primary plug part 16 and the secondary plug part 17 further insertion openings 22 and 23, which serve to receive electrical connection cable.
  • two T-shaped insertion openings 20 are arranged on the end side of the plug part 15 facing the side cheeks 18, which, however, are not mirror-symmetrical to one another in contrast to the exemplary embodiment according to FIG.
  • the insertion openings 20 thereby likewise have the function of coding elements and force a clear installation position of the plug part 15 in the housing of the power tool.
  • FIG. 9 In the embodiment of FIG. 9 is at the insertion openings 20 having the end face of the common Plug parts 15 a cylindrical encoder pin 25 is arranged, which projects axially beyond the end face.
  • the coding pin 24 is positioned off-center on the plug part 15 in the transverse direction. Due to this non-symmetrical position of the coding pin 24, a clear mounting position of the plug part 15 is also supported.
  • a coding bolt 24 is likewise arranged on the end face of the common plug part 15 which has the insertion openings 20.
  • this coding pin 24 has a non-round cross-sectional shape, in particular an asymmetrical cross section, which forces a precisely defined angular position for the assembly of the plug part.
  • the coding pin 24 can be seen in the transverse direction and can also be positioned in the vertical direction either centrally or optionally also off-center.
  • an adapter part 10 is shown, which can be inserted between the motor housing and the handle housing.
  • the adapter part 10 is annular and consists of a damping element 25 which is held on an adapter ring 26, wherein the adapter ring 26 is expediently constructed in two parts and the damping element 25 is arranged between the two parallel adapter ring parts.
  • the adapter part 10 has a radial slot 27, which extends up to a central recess 28, through which the electrical connection cables between the drive motor or the speed sensor in the motor housing and the electronic component or the plug part are guided in the handle housing.
  • the radial slot 27 allows a radial insertion of the connection cable from the outside until reaching the central recess 28th

Landscapes

  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Motor Or Generator Frames (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Portable Power Tools In General (AREA)

Abstract

A plug arrangement in a machine tool comprises a primary plug part, which is associated with a drive motor, and a secondary plug part, said plug parts being assembled to form a common plug part.

Description

Beschreibungdescription
Titeltitle
Steckeranordnung in einer Werkzeugmaschine, insbesondere in einer HandwerkzeugmaschinePlug arrangement in a machine tool, in particular in a hand tool
Die Erfindung bezieht sich auf eine Steckeranordnung in einerThe invention relates to a connector assembly in one
Werkzeugmaschine, insbesondere in einer Handwerkzeugmaschine wie z.B. einem Winkelschleifer, die ein Primärsteckerteil, welches einem Antriebsmotor der Werkzeugmaschine zugeordnet ist, und ein Sekundärsteckerteil aufweist, welches einem weiteren Bauteil in der Werkzeugmaschine zugeordnet ist.Machine tool, in particular in a hand tool such. an angle grinder, which has a primary plug part, which is assigned to a drive motor of the machine tool, and a secondary plug part, which is assigned to a further component in the machine tool.
Stand der TechnikState of the art
Es sind elektromotorisch betriebene Handwerkzeugmaschinen wie z.B. Winkelschleifer bekannt, die in einem Gehäuse einen elektrischen Antriebsmotor aufweisen, über den eine Werkzeugwelle mit daran befestigtem Werkzeug angetrieben wird. Der elektrische Antriebsmotor wird mithilfe eines Handschalters ein- bzw. ausgeschaltet, der üblicherweise über ein Steckerteil mit einem Elektronikbauteil zur Steuerung des Antriebsmotors verbunden ist. Zur Drehzahlregelung kann dem elektrischen Antriebsmotor ein Drehzahlsensor zugeordnet sein, wobei die die Drehzahl repräsentierenden Sensorsignale über ein weiteres Steckerteil dem Elektronikbauteil zugeführt werden.There are electric motor operated hand tool machines such. Angle grinder known, which have in a housing an electric drive motor, via which a tool shaft is driven with tool attached thereto. The electric drive motor is switched on and off by means of a manual switch, which is usually connected via a plug part with an electronic component for controlling the drive motor. For speed control, a speed sensor may be associated with the electric drive motor, wherein the sensor signals representing the rotational speed are supplied to the electronic component via a further plug part.
Allgemein ist man bei derartigen Werkzeugmaschinen bestrebt, aus Kostengründen und aus Gründen der besseren Haltbarkeit die Teileanzahl zu reduzieren. Insbesondere die während des Betriebs des Werkzeugs entstehenden abrasiven Schmutzpartikel können in das Gehäuseinnere der Werkzeugmaschine gelangen und zum einen zu einer erhöhten Reibung in den drehbaren Bauteilen führen und zum anderen unerwünschte elektrische Kontaktbrücken erzeugen, die zu einem Kurzschluss führen können. Durch eine Reduzierung der Teilevielfalt wird auch die Gefahr unerwünschter Ablagerungen von Schmutzteilchen im Gehäuse reduziert.In general, efforts are being made in such machine tools to reduce the number of parts for cost reasons and for reasons of better durability. In particular, the resulting during operation of the tool abrasive dirt particles can get into the housing interior of the machine tool and on the one hand lead to increased friction in the rotatable components and on the other undesirable electrical contact bridges produce the can cause a short circuit. By reducing the variety of parts and the risk of unwanted deposits of debris in the housing is reduced.
Offenbarung der ErfindungDisclosure of the invention
Der Erfindung liegt die Aufgabe zu Grunde, eine Steckeranordnung in einer Werkzeugmaschine, insbesondere in einer Handwerkzeugmaschine, mit einfachen konstruktiven Maßnahmen so auszubilden, dass die Teilevielfalt ohne Einschränkung der Funktionalität reduziert und die Lebensdauer erhöht wird.The invention is based on the object, a plug assembly in a machine tool, especially in a hand tool, with simple design measures in such a way that the variety of parts reduced without limiting the functionality and the life is increased.
Diese Aufgabe wird erfindungsgemäß mit den Merkmalen des Anspruches 1 gelöst. Die Unteransprüche geben zweckmäßige Weiterbildungen an.This object is achieved with the features of claim 1. The dependent claims indicate expedient developments.
Die erfindungsgemäße Steckeranordnung wird in einer Werkzeugmaschine eingesetzt, bei der es sich bevorzugt um eine Handwerkzeugmaschine wie z.B. einen Winkelschleifer handelt. Die Werkzeugmaschine weist in einem Gehäuse einen Antriebsmotor, insbesondere einen elektrischen Antriebsmotor auf, dem ein Primärsteckerteil zugeordnet ist, wobei elektrische Verbindungskabel zwischen dem Antriebsmotor und dem Primärsteckerteil geführt sind. Des Weiteren ist ein Sekundärsteckerteil vorgesehen, das einem weiteren Aggregat bzw. elektrischem Bauteil der Handwerkzeugmaschine zugeordnet ist, bei dem es sich in bevorzugter Ausführung um einen Drehzahlsensor zur Bestimmung der Motordrehzahl des Antriebsmotors handelt. Zwischen diesem weiteren Aggregat und dem Sekundärsteckerteil sind ebenfalls elektrischeThe plug assembly according to the invention is used in a machine tool, which is preferably a hand tool such. an angle grinder acts. The machine tool has in a housing a drive motor, in particular an electric drive motor, which is assigned a primary plug part, wherein electrical connection cables are guided between the drive motor and the primary plug part. Furthermore, a secondary plug part is provided which is assigned to a further unit or electrical component of the handheld power tool, which in a preferred embodiment is a speed sensor for determining the engine speed of the drive motor. Between this further unit and the secondary connector part are also electrical
Verbindungskabel geführt. Das Primärsteckerteil und das Sekundärsteckerteil sind zu einem gemeinsamen Steckerteil zusammengefasst .Connection cable led. The primary plug part and the secondary plug part are combined to form a common plug part.
Diese Ausführung hat den Vorteil, dass die Steckeranordnung mit dem Primärsteckerteil und dem Sekundärsteckerteil bereits als gemeinsames Steckerteil in das Gehäuse der Werkzeugmaschine eingesetzt und dort montiert werden kann. Durch das Zusammenlegen zu einem gemeinsamen Bauteil wird nicht nur die Teilevielfalt reduziert, sondern auch die Montage vereinfacht, da grundsätzlich eine gemeinsame Verbindungseinrichtung zur Montage des Steckerteils im Gehäuse ausreicht. Außerdem bietet das gemeinsame Steckerteil weniger Angriffsfläche für die Ablagerung von Schmutz, insbesondere von abrasiven Schmutzteilchen, die während der Bearbeitung eines Werkstückes entstehen .This embodiment has the advantage that the plug arrangement with the primary plug part and the secondary plug part already as a common plug part in the housing of the machine tool can be used and mounted there. By merging into a common component, not only the variety of parts is reduced, but also simplifies the assembly, as basically a common connection means for mounting the male part in the housing is sufficient. In addition, the common plug part provides less attack surface for the deposition of dirt, in particular of abrasive dirt particles, which arise during the machining of a workpiece.
Grundsätzlich ist es möglich, Primärsteckerteil und Sekundärsteckerteil als separate Bauteile auszubilden, die miteinander verbunden sind und auf diese Weise das gemeinsame Steckerteil bilden. Beispielsweise kann das Sekundärsteckerteil auf das Primärsteckerteil mittels einer Steckverbindung aufgesetzt werden, wobei auch sonstige Verbindungsmaßnahmen zwischen Primär- und Sekundärsteckerteil in Betracht kommen wie beispielsweise Verkleben, Verklammern oder dergleichen.In principle, it is possible to form primary plug part and secondary plug part as separate components which are connected to one another and in this way form the common plug part. For example, the secondary plug part can be placed on the primary plug part by means of a plug connection, wherein also other connection measures between the primary and secondary plug part come into consideration, such as, for example, gluing, stapling or the like.
Gemäß vorteilhafter Ausführung ist aber vorgesehen, dass das Steckerteil einstückig ausgebildet ist, so dass Primär- und Sekundärsteckerteil ein gemeinsames Steckergehäuse besitzen. Dieses besteht vorteilhafterweise aus Kunststoff und kann beispielsweise im Wege des Spritzgießens hergestellt werden.According to an advantageous embodiment, however, it is provided that the plug part is formed in one piece, so that primary and secondary plug part have a common plug housing. This advantageously consists of plastic and can be produced for example by way of injection molding.
An dem Primär- und Sekundärsteckerteil vereinenden, gemeinsamen Steckerteil können Kodierelemente angeordnet sein, über die die Einbauposition des Steckerteils im Gehäuse eindeutig festzulegen ist. Beispielsweise kann das Kodierelement als ein die Außenseite des gemeinsamen Steckerteils überragender Kodiersteg ausgeführt sein, der insbesondere mit einer zugeordneten Kodierausnehmung im Gehäuse korrespondiert, so dass eine Montage des gemeinsamen Steckerteils im Gehäuse nur möglich ist, wenn die Kodierelemente am Steckerteil und am Gehäuse ineinandergreifen. Eine andere Möglichkeit, die Einbauposition eindeutig festzulegen, besteht darin, als Kodierelement ein die Außenseite des Steckerteils axial überragender Kodierbolzen - A -At the primary and secondary plug part unite, common plug part coding elements can be arranged over which the installation position of the plug part in the housing is clearly defined. For example, the coding element can be embodied as a coding web projecting beyond the outside of the common plug part, which corresponds in particular to an associated coding recess in the housing, so that assembly of the common plug part in the housing is only possible if the coding elements engage with one another on the plug part and on the housing. Another way to clearly define the mounting position, is as a coding the outer side of the plug part axially superior coding - A -
vorzusehen, der entweder eine nicht-runde Querschnittsgeometrie aufweist und/oder in Querrichtung oder in Höhenrichtung eine außermittige Position am gemeinsamen Steckerteil aufweist.to provide, which either has a non-round cross-sectional geometry and / or has an off-center position on the common plug part in the transverse direction or in the height direction.
Gemäß einer weiteren vorteilhaften Ausführung weisen dasAccording to a further advantageous embodiment, the
Primärsteckerteil und das Sekundärsteckerteil an der gleichen Seite des gemeinsamen Steckerteils übereinander liegende Einstecköffnungen auf, die entweder zur Montage im Gehäuse oder für die elektrischen Verbindungskabel vorgesehen sind.Primary connector part and the secondary connector part on the same side of the common connector part superimposed insertion, which are provided either for mounting in the housing or for the electrical connection cable.
Gemäß einer weiteren vorteilhaften Ausführung ist das Gehäuse der Werkzeugmaschine mehrteilig aufgebaut und weist insbesondere ein Handgriffgehäuse sowie ein Motorgehäuse zur Aufnahme des Antriebsmotors auf. Das gemeinsame Steckerteil ist vorzugsweise in dem Handgriffgehäuse angeordnet, wobei die elektrischenAccording to a further advantageous embodiment, the housing of the machine tool is constructed in several parts and in particular has a handle housing and a motor housing for receiving the drive motor. The common plug part is preferably arranged in the handle housing, wherein the electrical
Verbindungskabel von dem Steckerteil zumindest einem Stellorgan im Motorgehäuse geführt sind, insbesondere zum elektrischen Antriebsmotor sowie zu dem bevorzugt als Drehzahlsensor ausgeführten, zusätzlichen elektrischen Aggregat. Zwischen dem Handgriff- und dem Motorgehäuse kann ein Dämpfungselement angeordnet sein, um Schwingungen, welche von der Bearbeitung des Werkstückes und von dem eingeschalteten Antriebsmotor herrühren, wirksam zu reduzieren. Das zweckmäßigerweise ringförmige Dämpfungselement weist vorzugsweise eine zentrische Ausnehmung auf sowie einen Radialschlitz auf, der bis zur zentrischenConnecting cable of the plug part are guided at least one actuator in the motor housing, in particular to the electric drive motor and to the preferably designed as a speed sensor, additional electrical unit. Between the handle and the motor housing, a damping element may be arranged to effectively reduce vibrations resulting from the machining of the workpiece and the switched-on drive motor. The suitably annular damping element preferably has a central recess and a radial slot which is up to the centric
Ausnehmung reicht, so dass die Verbindungskabel zwischen dem Steckerelement und dem Antriebsmotor sowie dem Drehzahlsensor über den Radialschlitz seitlich bis zum Erreichen der zentrischen Ausnehmung im Dämpfungselement eingeführt werden können. Grundsätzlich ist es aber auch möglich, dass die elektrischen Verbindungskabel außerhalb des Dämpfungselementes die Distanz zwischen Steckerelement und Antriebsmotor bzw. Drehzahlsensor überbrücken.Recess is sufficient so that the connecting cable between the male member and the drive motor and the speed sensor can be inserted laterally over the radial slot until reaching the central recess in the damping element. In principle, however, it is also possible for the electrical connection cables outside the damping element to bridge the distance between the plug element and the drive motor or speed sensor.
Weitere Vorteile und zweckmäßige Ausführungen sind den weiteren Ansprüchen, der Figurenbeschreibung und den Zeichnungen zu entnehmen. Es zeigen: Fig. 1 eine perspektivische Ansicht auf eineFurther advantages and expedient embodiments can be taken from the further claims, the description of the figures and the drawings. Show it: Fig. 1 is a perspective view of a
Handwerkzeugmaschine, mit einem zweiteiligen Griffgehäuse und einem Motorgehäuse zur Aufnahme eines elektrischen Antriebsmotors,Hand tool, comprising a two-part handle housing and a motor housing for receiving an electric drive motor,
Fig. 2 eine Seitenansicht auf das geöffnete Griffgehäuse, mit einem dem Griffgehäuse vorgelagerten Drehzahlsensor, der über ein elektrisches Verbindungskabel mit einem Elektronikbauteil im2 is a side view of the open handle housing, with a speed sensor located upstream of the handle housing, via an electrical connection cable with an electronic component in
Griffgehäuse verbunden ist,Handle housing is connected,
Fig. 3 eine perspektivische Ansicht auf das geöffneteFig. 3 is a perspective view of the open
Griffgehäuse mit dem Elektronikbauteil, einem Handschalter zur Betätigung des elektrischenHandle housing with the electronic component, a manual switch for actuating the electrical
Antriebsmotors sowie einem Steckerteil, bestehend aus Primär- und Sekundärstecker,Drive motor and a plug part, consisting of primary and secondary connector,
Fig. 4 eine ähnliche Darstellung wie Fig. 3, jedoch aus einer anderen Perspektive,4 is a similar view as FIG. 3, but from a different perspective,
Fig. 5 eine weitere Darstellung, jedoch aus noch einer weiteren Perspektive,5 is another illustration, but from yet another perspective,
Fig. 6 das gemeinsame Steckerteil in perspektivischer Einzeldarstellung,6 shows the common plug part in perspective detail view,
Fig. 7 das Steckerteil aus einer anderen Perspektive,7 shows the plug part from a different perspective,
Fig. 8 das Steckerteil mit verschiedenen stirnseitigenFig. 8, the plug part with different frontal
Einstecköffnungen, die zusätzlich die Aufgabe von die Einbauposition festlegenden Kodierelementen haben,Insertion openings, which additionally have the task of coding elements which fix the installation position,
Fig. 9 das Steckerteil mit einem außermittig angeordneten Kodierbolzen Fig. 10 das Steckerteil mit einem Kodierbolzen mit nichtrundem Querschnitt,Fig. 9, the plug part with an eccentrically arranged coding 10 shows the plug part with a Kodierbolzen non-circular cross-section,
Fig. 11 ein zwischen Motor- und Griffgehäuse einzufügendes ringförmiges Adapterteil, welches einFig. 11 is a between engine and handle housing einzuügendes annular adapter part, which a
Dämpfungselement enthält, wobei in das Adapterteil ein Radialschlitz bis zu einer zentrischen Ausnehmung eingebracht ist.Contains damping element, wherein in the adapter part a radial slot is introduced up to a central recess.
In den Figuren sind gleiche Bauteile mit gleichen Bezugszeichen versehen .In the figures, the same components are provided with the same reference numerals.
In Fig. 1 ist in schematischer Weise eine Handwerkzeugmaschine 1 dargestellt, bei der es sich beispielsweise um einen Winkelschleifer handelt. Das Gehäuse 2 der Handwerkzeugmaschine 1 ist mehrteilig aufgebaut und umfasst ein Motorgehäuse 3 und ein mit dem Motorgehäuse zu verbindendes Griffgehäuse 4, bestehend aus zwei Griffhalbschalen 4a und 4b. Im Motorgehäuse 3 ist ein elektrischer Antriebsmotor 5 aufgenommen, der über eine Antriebsverbindung 6 eine drehbar gelagerte Werkzeugwelle 7 antreibt, welche Träger eines Werkzeuges 8 ist. Das Motorgehäuse 3 und das Griffgehäuse 4 sind über eine Verbindungseinrichtung 9 miteinander verbunden. Im Bereich der Verbindung zwischen Motorgehäuse 3 und Griffgehäuse 4 kann ggf. ein Adapterteil eingesetzt werden, welches bevorzugt ein Dämpfungselement zur Vibrationsdämpfung aufweist.In Fig. 1, a hand tool 1 is shown in a schematic manner, which is, for example, an angle grinder. The housing 2 of the portable power tool 1 is constructed in several parts and comprises a motor housing 3 and a handle housing 4 to be connected to the motor housing, consisting of two handle half shells 4a and 4b. In the motor housing 3, an electric drive motor 5 is accommodated, which drives a rotatably mounted tool shaft 7 via a drive connection 6, which carrier of a tool 8 is. The motor housing 3 and the handle housing 4 are connected to each other via a connecting device 9. In the region of the connection between the motor housing 3 and the handle housing 4 may optionally be used an adapter part, which preferably has a damping element for vibration damping.
In Fig. 2 ist ein derartiges Adapterteil 10 zwischen das Motorgehäuse 3 und das Griffgehäuse 4 eingefügt. Das Adapterteil 10 ist ringförmig ausgebildet und besitzt eine zentrische Ausnehmung, durch die ein elektrisches Verbindungskabel 13 geführt ist, über das ein Drehzahlsensor 11 mit einem Elektronikbauteil 12 verbunden ist. Der Drehzahlsensor 11 befindet sich im Motorgehäuse 3 und ist dem elektrischen Antriebsmotor zur Drehzahlmessung zugeordnet, dasIn Fig. 2, such an adapter part 10 is inserted between the motor housing 3 and the handle housing 4. The adapter part 10 is annular and has a central recess through which an electrical connection cable 13 is guided, via which a speed sensor 11 is connected to an electronic component 12. The speed sensor 11 is located in the motor housing 3 and is assigned to the electric drive motor for speed measurement, the
Elektronikbauteil 12 befindet sich im Griffgehäuse 4. Wie den Figuren 3 bis 5 in verschiedenen Perspektiven zu entnehmen, ist im Griffgehäuse 4 ein Steckerteil 15 angeordnet, welches zweiteilig aufgebaut ist und ein Primärsteckerteil 16 sowie ein Sekundärsteckerteil 17 umfasst. Primärsteckerteil 16 und Sekundärsteckerteil 17 sind einstückig ausgebildet und weisen ein gemeinsames, das Steckerteil 15 bildende Gehäuse auf. Das Primärsteckerteil 16 ist dem elektrischen Antriebsmotor zugeordnet, das Sekundärsteckerteil 17 dem Drehzahlsensor 11 (Fig. 2) . Beide Steckerteile 16, 17 sind außerdem über elektrische Verbindungskabel mit dem Elektronikbauteil 12 verbunden, welches im Griffgehäuse 4 sich unmittelbar unterhalb des Steckerteils 15 befindet.Electronic component 12 is located in the handle housing. 4 As can be seen in Figures 3 to 5 in different perspectives, a plug member 15 is arranged in the handle housing 4, which is constructed in two parts and a primary plug part 16 and a secondary plug part 17 includes. Primary plug part 16 and secondary plug part 17 are integrally formed and have a common, the plug part 15 forming housing. The primary plug part 16 is assigned to the electric drive motor, the secondary plug part 17 to the speed sensor 11 (FIG. 2). Both plug parts 16, 17 are also connected via electrical connection cable with the electronic component 12, which is located in the handle housing 4 directly below the plug part 15.
Das Steckerteil 15 ist im oberen Abschnitt des Griffgehäuses 4 unmittelbar oberhalb eines Handschalters 14 zum Ein- undThe plug part 15 is in the upper portion of the handle housing 4 immediately above a manual switch 14 for on and
Ausschalten des elektrischen Antriebsmotors angeordnet. Zur Befestigung und einfachen Montage des gemeinsamen Steckerteils 15 im Griffgehäuse 4 besitzt das Steckerteil 15 Seitenwangen 18, die seitlich am Gehäuse des Steckerteils abstehen und gegen eine in Querrichtung wirkende Federkraft aufgebogen werden können. In die Seitenwangen 18 ist eine Aufnahmeöffnung eingebracht, die auf eine zugeordnete Erhebung im Griffgehäuse aufgeschoben werden kann, wodurch das Steckerteil 15 eine Rastposition im Griffgehäuse einnimmt.Switching off the electric drive motor arranged. For attachment and easy installation of the common plug part 15 in the handle housing 4, the plug part 15 has side cheeks 18, which protrude laterally on the housing of the plug part and can be bent against a force acting in the transverse direction spring force. In the side cheeks 18, a receiving opening is introduced, which can be pushed onto an associated survey in the handle housing, whereby the plug member 15 assumes a detent position in the handle housing.
Wie der Einzeldarstellung des gemeinsamen Steckerteils 15 gemäß Fig. 6 zu entnehmen, befinden sich an der Oberseite des Primärsteckerteils 16, an der auch das Sekundärsteckerteil 17 positioniert ist, über die Wandung überstehende Kodierstege 19, die die Aufgabe haben, die Einbauposition des Steckerteils 15 im Gehäuse der Handwerkzeugmaschine exakt festzulegen. Nur bei korrekter Einbaulage wird eine Kollision der Kodierstege 19 mit Bauteilen im Gehäuse vermieden. Es kann zweckmäßig sein, den Kodierstegen 19 zugeordnete Kodierausnehmungen im Gehäuse vorzusehen, in die die Kodierstege bei korrekter Einbaulage eingreifen . An der Stirnseite des Primärsteckerteils 16 befinden sich Einstecköffnungen 20, die vorzugsweise zur Befestigung des Steckerteiles dienen, wobei in der montierten Position Montageelemente, welche im Gehäuse angeordnet sind, in die Einstecköffnungen 20 einragen. Gegebenenfalls kommt den Einstecköffnungen 20 auch die Funktion zu, elektrische Verbindungselemente aufzunehmen. Die Seitenwangen 18, welche ebenfalls zur Montage des Steckerteiles 15 dienen, überragen seitlich die Stirnseite des Primärsteckerteiles 16 mit den darin eingebrachten Einstecköffnungen 20.As can be seen in the individual representation of the common plug part 15 according to FIG. 6, located at the top of the primary plug part 16, on which the secondary plug part 17 is positioned, over the wall projecting Kodierstege 19, which have the task, the installation position of the plug part 15 in Determine the housing of the power tool exactly. Only with the correct mounting position, a collision of Kodierstege 19 is avoided with components in the housing. It may be expedient to provide the Kodierstegen 19 associated Kodierausnehmungen in the housing, in which engage the Kodierstege in the correct mounting position. On the front side of the primary plug part 16 are insertion openings 20, which preferably serve for fastening the plug part, wherein in the mounted position mounting elements, which are arranged in the housing, protrude into the insertion openings 20. If appropriate, the insertion openings 20 also have the function of receiving electrical connection elements. The side cheeks 18, which likewise serve for mounting the plug part 15, project laterally beyond the end face of the primary plug part 16 with the insertion openings 20 introduced therein.
In das Sekundärsteckerteil 17 sind weitere Einstecköffnungen 21 eingebracht, die zur Aufnahme der elektrischen Verbindungskabel dienen. Die Einstecköffnungen 21 am Sekundärsteckerteil 17 sind zur gleichen Stirnseite gerichtet wie die Einstecköffnungen 20 am Primärsteckerteil 16, allerdings ist die Stirnseitenebene des Sekundärsteckerteils 17 versetzt zur Stirnseitenebene des Primärsteckerteils 16 angeordnet.In the secondary plug part 17 further insertion openings 21 are inserted, which serve to receive the electrical connection cable. The insertion openings 21 on the secondary plug part 17 are directed to the same end side as the insertion openings 20 on the primary plug part 16, however, the front side plane of the secondary plug part 17 is arranged offset to the front side plane of the primary plug part 16.
Wie Fig. 7 zu entnehmen, befinden sich an der gegenüberliegenden Stirnseite, also auf der den Seitenwangen 18 gegenüberliegenden Stirnseite, sowohl am Primärsteckerteil 16 als auch am Sekundärsteckerteil 17 weitere Einstecköffnungen 22 bzw. 23, die zur Aufnahme elektrischer Verbindungskabel dienen.As shown in FIG. 7, located on the opposite end face, ie on the side cheeks 18 opposite end face, both the primary plug part 16 and the secondary plug part 17 further insertion openings 22 and 23, which serve to receive electrical connection cable.
Im Ausführungsbeispiel gemäß Fig. 8 sind an der den Seitenwangen 18 zugewandten Stirnseite des Steckerteils 15 zwei T-förmige Einstecköffnungen 20 angeordnet, die jedoch im Unterschied zum Ausführungsbeispiel gemäß Fig. 6 nicht spiegelsymmetrisch zueinander angeordnet sind, sondern um 90° zueinander versetzt liegen. Die Einstecköffnungen 20 haben hierdurch ebenfalls die Funktion von Kodierelementen und erzwingen eine eindeutige Einbaulage des Steckerteils 15 im Gehäuse der Handwerkzeugmaschine .In the exemplary embodiment according to FIG. 8, two T-shaped insertion openings 20 are arranged on the end side of the plug part 15 facing the side cheeks 18, which, however, are not mirror-symmetrical to one another in contrast to the exemplary embodiment according to FIG. The insertion openings 20 thereby likewise have the function of coding elements and force a clear installation position of the plug part 15 in the housing of the power tool.
Im Ausführungsbeispiel gemäß Fig. 9 ist an der die Einstecköffnungen 20 aufweisenden Stirnseite des gemeinsamen Steckerteils 15 ein zylindrischer Kodierbolzen 25 angeordnet, der axial über die Stirnseite übersteht. Der Kodierbolzen 24 ist in Querrichtung außermittig am Steckerteil 15 positioniert. Auf Grund dieser nicht-symmetrischen Lage des Kodierbolzens 24 wird ebenfalls eine eindeutige Einbaulage des Steckerteils 15 unterstützt .In the embodiment of FIG. 9 is at the insertion openings 20 having the end face of the common Plug parts 15 a cylindrical encoder pin 25 is arranged, which projects axially beyond the end face. The coding pin 24 is positioned off-center on the plug part 15 in the transverse direction. Due to this non-symmetrical position of the coding pin 24, a clear mounting position of the plug part 15 is also supported.
Im Ausführungsbeispiel gemäß Fig. 10 ist ebenfalls an der die Einstecköffnungen 20 aufweisenden Stirnseite des gemeinsamen Steckerteils 15 ein Kodierbolzen 24 angeordnet. Dieser Kodierbolzen 24 besitzt jedoch eine nicht-runde Querschnittsgestalt, insbesondere einen asymmetrischen Querschnitt, der eine exakt definierte Winkelposition für die Montage des Steckerteils erzwingt. Der Kodierbolzen 24 kann in Querrichtung gesehen und ebenso in Hochrichtung entweder mittig oder gegebenenfalls auch außermittig positioniert werden.In the embodiment according to FIG. 10, a coding bolt 24 is likewise arranged on the end face of the common plug part 15 which has the insertion openings 20. However, this coding pin 24 has a non-round cross-sectional shape, in particular an asymmetrical cross section, which forces a precisely defined angular position for the assembly of the plug part. The coding pin 24 can be seen in the transverse direction and can also be positioned in the vertical direction either centrally or optionally also off-center.
In Fig. 11 ist ein Adapterteil 10 dargestellt, welches zwischen das Motorgehäuse und das Griffgehäuse eingefügt werden kann. Das Adapterteil 10 ist ringförmig ausgebildet und besteht aus einem Dämpfungselement 25, welches an einem Adapterring 26 gehalten ist, wobei der Adapterring 26 zweckmäßigerweise zweiteilig aufgebaut ist und das Dämpfungselement 25 zwischen den beiden parallelen Adapterringteilen angeordnet ist. Das Adapterteil 10 besitzt einen Radialschlitz 27, der sich bis zu einer zentrischen Ausnehmung 28 erstreckt, durch die die elektrischen Verbindungskabel zwischen dem Antriebsmotor bzw. dem Drehzahlsensor im Motorgehäuse und dem Elektronikbauteil bzw. dem Steckerteil im Griffgehäuse geführt sind. Der Radialschlitz 27 erlaubt ein radiales Einführen der Verbindungskabel von außen bis zum Erreichen der zentrischen Ausnehmung 28. In Fig. 11, an adapter part 10 is shown, which can be inserted between the motor housing and the handle housing. The adapter part 10 is annular and consists of a damping element 25 which is held on an adapter ring 26, wherein the adapter ring 26 is expediently constructed in two parts and the damping element 25 is arranged between the two parallel adapter ring parts. The adapter part 10 has a radial slot 27, which extends up to a central recess 28, through which the electrical connection cables between the drive motor or the speed sensor in the motor housing and the electronic component or the plug part are guided in the handle housing. The radial slot 27 allows a radial insertion of the connection cable from the outside until reaching the central recess 28th

Claims

Ansprüche claims
1. Steckeranordnung in einer Werkzeugmaschine, insbesondere in einer Handwerkzeugmaschine, mit einem einem Antriebsmotor (5) der Werkzeugmaschine zugeordneten Primärsteckerteil (16) und mit einem Sekundärsteckerteil (17), das einem weiteren Aggregat (11) der Werkzeugmaschine (1) zugeordnet ist, dadurch gekennzeichnet, dass das Primärsteckerteil (16) und das Sekundärsteckerteil (17) zu einem gemeinsamen Steckerteil (15) zusammengefasst sind.1. Plug arrangement in a machine tool, in particular in a hand tool, with a drive motor (5) of the machine tool associated primary plug part (16) and with a secondary plug part (17) which is associated with another unit (11) of the machine tool (1) characterized in that the primary plug part (16) and the secondary plug part (17) are combined to form a common plug part (15).
2. Steckeranordnung nach Anspruch 1, dadurch gekennzeichnet, dass das Steckerteil (15) einstückig ausgebildet ist.2. Plug arrangement according to claim 1, characterized in that the plug part (15) is integrally formed.
3. Steckeranordnung nach Anspruch 1, dadurch gekennzeichnet, dass das Primärsteckerteil (16) und das Sekundärsteckerteil (17) als separate Bauteile ausgebildet sind, die miteinander verbunden sind und das gemeinsame Steckerteil (15) bilden.3. Plug arrangement according to claim 1, characterized in that the primary plug part (16) and the secondary plug part (17) are formed as separate components, which are interconnected and form the common plug part (15).
4. Steckeranordnung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Steckerteil (15) ein die Einbauposition festlegendes Kodierelement (19, 24) aufweist.4. Plug arrangement according to one of claims 1 to 3, characterized in that the plug part (15) has a mounting position fixing the coding element (19, 24).
5. Steckeranordnung nach Anspruch 4, dadurch gekennzeichnet, dass das Kodierelement ein die5. Connector arrangement according to claim 4, characterized in that the coding element is a
Außenseite des Steckerteils (15) überragender Kodiersteg (19) ist.Outside of the plug part (15) outstanding coding web (19).
6. Steckeranordnung nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass das Kodierelement ein die6. Plug arrangement according to claim 4 or 5, characterized in that the coding element is a
Außenseite des Steckerteils (15) axial überragender Kodierbolzen (24) ist. Outside of the plug part (15) axially superior coding pin (24).
7. Werkzeugmaschine, insbesondere Handwerkzeugmaschine, mit einer Steckeranordnung nach einem der Ansprüche 1 bis 6.7. Machine tool, in particular hand tool, with a plug arrangement according to one of claims 1 to 6.
8. Werkzeugmaschine nach Anspruch 7, dadurch gekennzeichnet, dass das Gehäuse (2) der Werkzeugmaschine (1) mehrteilig aufgebaut ist und ein Handgriffgehäuse (4) sowie ein Motorgehäuse (3) zur Aufnahme des Antriebsmotors (5) umfasst, wobei das Steckerteil (15) in dem Handgriffgehäuse (4) angeordnet ist und elektrische8. Machine tool according to claim 7, characterized in that the housing (2) of the machine tool (1) is constructed in several parts and a handle housing (4) and a motor housing (3) for receiving the drive motor (5), wherein the plug part (15 ) is arranged in the handle housing (4) and electrical
Verbindungskabel (13) von dem Steckerteil (15) zu mindestens einem elektrischen Bauteil (5, 11) im Motorgehäuse (3) geführt sind.Connecting cable (13) from the plug part (15) to at least one electrical component (5, 11) in the motor housing (3) are guided.
9. Werkzeugmaschine nach Anspruch 8, dadurch gekennzeichnet, dass zwischen Handgriff- (4) und Motorgehäuse (3) ein Dämpfungselement (25) angeordnet ist, durch oder über das die Verbindungskabel (13) geführt sind.9. Machine tool according to claim 8, characterized in that between the handle- (4) and the motor housing (3) a damping element (25) is arranged through or through which the connection cable (13) are guided.
10. Werkzeugmaschine nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass das Dämpfungselement (25) eine zentrische Ausnehmung (28) aufweist und mit einem bis zur zentrischen Ausnehmung (28) reichenden Radialschlitz (27) versehen ist.10. Machine tool according to claim 8 or 9, characterized in that the damping element (25) has a central recess (28) and with a to the central recess (28) reaching radial slot (27) is provided.
11. Werkzeugmaschine nach einem der Ansprüche 7 bis 10, dadurch gekennzeichnet, dass das Aggregat, dem das Sekundärsteckerelement (17) zugeordnet ist, ein Drehzahlsensor (11) zur Bestimmung der Motordrehzahl des Antriebsmotors (5) ist.11. Machine tool according to one of claims 7 to 10, characterized in that the unit, which is associated with the secondary connector element (17), a speed sensor (11) for determining the engine speed of the drive motor (5).
12. Werkzeugmaschine nach einem der Ansprüche 7 bis 11, dadurch gekennzeichnet, dass das Steckerteil (15) mit einem Elektronikbauteil (12) zur Steuerung des Antriebsmotors (5) und des weiteren Aggregats, dem das Sekundärsteckerteil (17) zugeordnet ist, elektrisch verbunden ist. 12. Machine tool according to one of claims 7 to 11, characterized in that the plug part (15) with an electronic component (12) for controlling the drive motor (5) and the further unit, which is associated with the secondary plug part (17) is electrically connected ,
13. Werkzeugmaschine nach einem der Ansprüche 7 bis 12, dadurch gekennzeichnet, dass das Primärsteckerteil (16) und das Sekundärsteckerteil (17) an der gleichen Seite und übereinanderliegend Einstecköffnungen (20, 21; 22, 23) aufweisen. 13. Machine tool according to one of claims 7 to 12, characterized in that the primary plug part (16) and the secondary plug part (17) on the same side and one above the other insertion openings (20, 21, 22, 23).
EP09732137.6A 2008-04-18 2009-03-19 Handheld maschine tool including a plug arrangement. Active EP2269270B1 (en)

Applications Claiming Priority (2)

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DE102008001268A DE102008001268A1 (en) 2008-04-18 2008-04-18 Plug arrangement in a machine tool, in particular in a hand tool
PCT/EP2009/053230 WO2009127491A1 (en) 2008-04-18 2009-03-19 Plug arrangement in a machine tool, in particular in a handheld machine tool

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EP2269270A1 true EP2269270A1 (en) 2011-01-05
EP2269270B1 EP2269270B1 (en) 2015-03-04

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US (1) US8678105B2 (en)
EP (1) EP2269270B1 (en)
CN (1) CN102007648B (en)
DE (1) DE102008001268A1 (en)
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WO (1) WO2009127491A1 (en)

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US20110036607A1 (en) 2011-02-17
CN102007648A (en) 2011-04-06
US8678105B2 (en) 2014-03-25
CN102007648B (en) 2014-08-13
EP2269270B1 (en) 2015-03-04
RU2010146706A (en) 2012-06-10
DE102008001268A1 (en) 2009-10-22
RU2516439C2 (en) 2014-05-20
WO2009127491A1 (en) 2009-10-22

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