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EP3383585A1 - Hand-held power tool having at least one machine-side contact element - Google Patents

Hand-held power tool having at least one machine-side contact element

Info

Publication number
EP3383585A1
EP3383585A1 EP16788712.4A EP16788712A EP3383585A1 EP 3383585 A1 EP3383585 A1 EP 3383585A1 EP 16788712 A EP16788712 A EP 16788712A EP 3383585 A1 EP3383585 A1 EP 3383585A1
Authority
EP
European Patent Office
Prior art keywords
hand tool
accessory
blocking element
side contact
power tool
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
EP16788712.4A
Other languages
German (de)
French (fr)
Other versions
EP3383585B1 (en
Inventor
Joachim Schadow
Joern Stock
Florian Esenwein
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 EP3383585A1 publication Critical patent/EP3383585A1/en
Application granted granted Critical
Publication of EP3383585B1 publication Critical patent/EP3383585B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/04—Protective covers for the grinding wheel
    • B24B55/05—Protective covers for the grinding wheel specially designed for portable grinding machines
    • B24B55/052—Protective covers for the grinding wheel specially designed for portable grinding machines with rotating tools
    • 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
    • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
    • B24B23/022—Spindle-locking devices, e.g. for mounting or removing the tool
    • 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
    • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
    • B24B23/028—Angle tools
    • 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
    • B25F5/025—Construction of casings, bodies or handles with torque reaction bars for rotary tools
    • B25F5/026—Construction of casings, bodies or handles with torque reaction bars for rotary tools in the form of an auxiliary handle
    • 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
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H01H9/28—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/54—Mechanisms for coupling or uncoupling operating parts, driving mechanisms, or contacts
    • H01H3/58—Mechanisms for coupling or uncoupling operating parts, driving mechanisms, or contacts using friction, toothed, or other mechanical clutch
    • 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

Definitions

  • the invention relates to a hand tool with at least one machine-side contact element.
  • the hand tool of the invention with the features of the independent claim is designed in particular as an angle grinder.
  • this includes monitoring whether safety-relevant accessories such as a protective cover or an additional handle are mounted.
  • the hand tool according to the invention has at least one
  • At least one accessory-side contact element At least one accessory-side contact element. It is proposed that the machine-side contact element and the accessory-side contact element are releasably connectable to each other. Thus, it can be advantageously ensured that the safety-relevant accessories can be mounted on or on the handheld power tool.
  • the features specified in the dependent claims are advantageous developments of the fastening unit according to the invention after
  • the accessory is designed as an additional handle.
  • the auxiliary handle is advantageously provided to be encompassed in particular by an operator of the power tool.
  • Hand tool can be increased by the
  • Hand tool is operated with two hands.
  • the accessory is designed as a protective hood.
  • the guard is advantageously provided to an operator of the power tool in the operation of the power tool before sparks and / or material particles that in the operation of
  • a blocking element is arranged in the gear housing part, which is intended to block a mechanical element when not mounted accessories, so that the power tool can not be turned on.
  • the mechanical element is designed as a switching element.
  • the switching element is arranged in the motor housing part. If the blocking element has a stop, the slide switch moves against the stop of the blocking element when accessories are not mounted. Thus, it is advantageously ensured that the power tool when not mounted
  • the mechanical element is designed as a mechanical shaft, in particular as a motor shaft.
  • the mechanical element is designed as an output shaft, in particular as a spindle.
  • the blocking element has a rotary joint.
  • the blocking element when the accessory is mounted, the blocking element is acted upon by a force and moved about an axis of rotation of the rotary joint.
  • the blocking element advantageously by rotating the blocking element about the axis of rotation of the
  • FIG. 1 shows an arrangement of a hand tool according to the invention and a contact element in a schematic representation
  • Figure 2 shows a first section of a traction tractor and a first
  • FIG. 3 shows two embodiment of an accessory of the invention
  • FIG. 4 shows a second embodiment of the invention
  • Figure 5 shows a third embodiment of the invention
  • FIG. 6 shows a hand tool according to the invention with two more
  • FIG. 1 shows a handheld power tool 10.
  • the handheld power tool is an angle grinder, which is usually a
  • Gear housing part 12 which houses a bevel gear. From the angle gear projects a work spindle 14 on which a grinding and / or
  • the angle grinder has a
  • Motor housing part 18 for receiving an electric motor drive unit 20.
  • Machine side means that
  • Contact element 24 is arranged in the power tool 10. in the
  • the machine-side contact element 24 is a thread.
  • the thread 24 is arranged in the transmission housing 12. But it is also conceivable that the machine side
  • Contact element 24 is arranged in the motor housing part 18. It is also conceivable that more than one machine-side contact element 24 in the
  • Hand tool 10 are arranged.
  • An accessory 26 is intended to be connected to the power tool 10.
  • the accessory 26 has an accessory-side contact element 28. On the accessory side, the contact element 28 is arranged in the accessory 26 for the handheld power tool 10.
  • the accessory 26 is an additional handle 26a for
  • the auxiliary handle 26a has as an accessory-side contact element 28 a threaded pin 29, which is screwed into the thread 24 of the gear housing part 12.
  • Embodiment is the machine-side contact element 24 and the accessory-side contact element 28 releasably connectable to each other.
  • the accessory 26 for the hand tool 10 is, as shown in Figure 3, designed as an additional handle 26a or as a protective hood 26b.
  • Additional handle 26a is intended to be operated by an operator
  • Traction machine 10 must be operated with two hands.
  • the task of the protective hood 26b is to provide an operator of
  • a blocking element 30, as can be seen in FIG. 1, is arranged in the gearbox housing part 12.
  • a mechanical element 32 is adjacent to the blocking element
  • the mechanical element 32 is intended to ensure the operation of the power tool 10.
  • the blocking element 30 is intended to block the mechanical element 32 when the accessory 26 is not mounted, so that the handheld power tool 10 can not be put into operation.
  • the mechanical element 32 is in the embodiment in Figure 1 a
  • Switching element 32 Figure 2 shows a detailed view.
  • the switching element 32 is provided, upon actuation of a switch 34, the electromotive
  • the switching element 32 is in
  • Embodiment of Figure 2 designed as a slide switch. Not at mounted accessory 26, for example, when not mounted auxiliary handle 26a, the slide switch 32 can not be moved upon actuation of the switch 34 to turn on the electric motor drive unit 20, so that the power tool 10 can not be turned on.
  • the blocking element 30 is in the embodiment of Figure 1 as a
  • Tilting element with swivel 40 is executed.
  • the blocking element 30 has a stop 42.
  • the slide switch 32 can not be moved further in the direction of the transmission housing 12, since it moves against the stop 42 of the blocking element 30. If the auxiliary handle 26a is mounted, the blocking element 30 is acted upon by a force F. The blocking element 30 rotates about an axis of rotation 50 of the rotary joint 40. By rotating the blocking element 30 about the axis of rotation 50 of the rotary joint 40, the stop 42 of the blocking element 30 rotates in a direction R and is for the
  • Slide valve 32 no longer an obstacle. In the case of the mounted auxiliary handle 26a, the slide switch 32 can therefore be moved in the direction of the transmission housing 12 and turn on the power tool 10.
  • a restoring force ensures that the blocking element 30 returns to its original position upon disassembly of the auxiliary handle 26a.
  • Restoring force can be generated in that the blocking element 30 is elastically deformable. But it is also conceivable that an additional element, not shown, for example, a return spring is integrated.
  • FIG. 1 shows two variants in which the assembly of the
  • the protective hood 26b is queried.
  • the protective hood 26b has a protective collar 60. Will the
  • the blocking element 30 is actuated, which rotates about its axis of rotation 50 of the rotary joint 40.
  • the stop 42 of the blocking element 30 rotates in a direction R and is for the Slide valve 32 no longer an obstacle.
  • the slide switch 32 can therefore be moved in the direction of the transmission housing 12 and turn on the power tool 10.
  • FIG. 4 shows a further embodiment of a handheld power tool 10 with a blocking element 30 and a mechanical element 32.
  • the mechanical element 32 is in the embodiment in Figure 4 a
  • the motor shaft 32 is intended to forward a rotational movement via a transmission to an output shaft.
  • not mounted accessories 26 for example, when not mounted guard 26b is the
  • Motor shaft 32 is blocked, so that the power tool 10 can not go into operation. It is between a toothed sleeve 62 and the
  • Blocking element 30 formed a positive connection.
  • the blocking element 30 is designed in the embodiment of Figure 4 with a swivel joint 40.
  • the blocking element 30 is moved about the swivel joint 40, whereby the positive connection between the blocking element 30 and the toothed toothed sleeve 62 is released.
  • a restoring force ensures that the blocking element 30 returns to its original position when the protective hood 26b is removed.
  • the restoring force can be generated in that the blocking element 30 is elastically deformable. But it is also conceivable that an additional element, not shown, for example, a return spring is integrated.
  • FIG. 5 shows a further embodiment of a handheld power tool 10 with a blocking element 30 and a mechanical element 32.
  • the mechanical element 32 is in the embodiment in Figure 5 output shaft 32, which is designed as a spindle.
  • the blocking element 30 is mounted translationally in a bearing flange 64.
  • the blocking element 30 is subjected to force F and moved from the position B to the position A, as shown in FIG.
  • a restoring force ensures that the blocking element 30 returns to its original position when the protective hood 26b is removed.
  • the restoring force is generated by a return spring 66.
  • the brake can only be released in the assembled state of the accessory 26.
  • FIG. 6 shows a handheld power tool 10, wherein the accessory 26 is designed as a bow-type handle 26d or as a suction hood 26c. Combinations of the accessories of the embodiments in the figures are also conceivable. Thus, it is conceivable that a hand tool 10 equipped with protection 26b and strap handle 26d. It is just as conceivable that a hand tool 10 is equipped with additional handle 26a and suction hood 26c.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Sawing (AREA)
  • Portable Power Tools In General (AREA)

Abstract

The invention relates to a hand-held power tool (10), in particular an angle grinder having a gearing housing part (12), wherein the gearing housing part (12) has at least one machine-side contact element (24), and having accessory equipment (26), wherein the accessory equipment (26) has at least one accessory equipment-side contact element (28). It is proposed that in the mounted state of the accessory (26) on the hand-held power tool (10) the machine-side contact element (24) comes into contact with the accessory-side contact element (28).

Description

Beschreibung  description

Titel title

Handwerkzeugmaschine mit mindestens einem maschinenseitigem Hand tool with at least one machine side

Kontaktelement  contact element

Die Erfindung betrifft eine Handwerkzeugmaschine mit mindestens einem maschinenseitigem Kontaktelement. Stand der Technik The invention relates to a hand tool with at least one machine-side contact element. State of the art

Aus dem Stand der Technik sind schon Handwerkzeugmaschinen nach dem Oberbegriff des unabhängigen Anspruchs bekannt. Offenbarung der Erfindung Hand tool machines according to the preamble of the independent claim are already known from the prior art. Disclosure of the invention

Die erfindungsgemäße Handwerkzeugmaschine mit den Merkmalen des unabhängigen Anspruchs ist insbesondere als Winkelschleifer ausgebildet. Bei Handwerkzeugmaschinen dieser Art ist es ein besonderes Bedürfnis, die Sicherheit für einen Bediener der Handwerkzeugmaschine zu erhöhen. Dazu gehört unter anderem eine Überwachung, ob sicherheitsrelevantes Zubehör wie eine Schutzhaube beziehungsweise ein Zusatzhandgriff montiert sind. The hand tool of the invention with the features of the independent claim is designed in particular as an angle grinder. In handheld power tools of this type, there is a particular need to increase safety for an operator of the power tool. Among other things, this includes monitoring whether safety-relevant accessories such as a protective cover or an additional handle are mounted.

Die erfindungsgemäße Handwerkzeugmaschine weist mindestens ein The hand tool according to the invention has at least one

Getriebegehäuseteil auf. Ein sicherheitsrelevantes Zubehör weist Gear housing part on. A safety-related accessory points

erfindungsgemäß mindestens ein zubehörseitiges Kontaktelement auf. Es wird vorgeschlagen, dass das maschinenseitige Kontaktelement und das zubehörseitige Kontaktelement lösbar miteinander verbindbar sind. Somit kann vorteilhaft sichergestellt werden, dass das sicherheitsrelevante Zubehör auf beziehungsweise an die Handwerkzeugmaschine montiert werden kann. Durch die in den Unteransprüchen angegebenen Merkmale sind vorteilhafte Weiterbildungen der erfindungsgemäßen Befestigungseinheit nach dem According to the invention at least one accessory-side contact element. It is proposed that the machine-side contact element and the accessory-side contact element are releasably connectable to each other. Thus, it can be advantageously ensured that the safety-relevant accessories can be mounted on or on the handheld power tool. The features specified in the dependent claims are advantageous developments of the fastening unit according to the invention after

Anspruch 1 möglich. Claim 1 possible.

In einer vorteilhaften Ausführungsform ist das Zubehör als Zusatzhandgriff ausgebildet. Der Zusatzhandgriff ist vorteilhafterweise dazu vorgesehen, insbesondere von einem Bediener der Handwerkzeugmaschine umgriffen zu werden. Somit kann vorteilhaft die Sicherheit in der Anwendung der In an advantageous embodiment, the accessory is designed as an additional handle. The auxiliary handle is advantageously provided to be encompassed in particular by an operator of the power tool. Thus, the safety in the application of the

Handwerkzeugmaschine dadurch erhöht werden, indem die Hand tool can be increased by the

Handwerkzeugmaschine mit zwei Händen bedient wird.  Hand tool is operated with two hands.

In einer weiteren vorteilhaften Ausführungsform ist das Zubehör als Schutzhaube ausgebildet. Die Schutzhaube ist vorteilhafterweise dazu vorgesehen, einen Bediener der Handwerkzeugmaschine im Betrieb der Handwerkzeugmaschine vor Funken und/oder Materialpartikeln, die im Betrieb der  In a further advantageous embodiment, the accessory is designed as a protective hood. The guard is advantageously provided to an operator of the power tool in the operation of the power tool before sparks and / or material particles that in the operation of

Handwerkzeugmaschine entstehen, und/oder vor mit großer Wucht nach außen geschleuderten Bruchstücken einer im Betrieb zerborstenen Scheibe zu schützen. Vorteilhafterweise ist ein Blockierelement im Getriebegehäuseteil angeordnet, das dazu vorgesehen ist, bei nicht montiertem Zubehör ein mechanisches Element zu blockieren, sodass die Handwerkzeugmaschine nicht eingeschaltet werden kann. Somit kann vorteilhaft die sichere Bedienung der  Hand tool arise, and / or before with great force to the outside hurled fragments of a burst in operation disc to protect. Advantageously, a blocking element is arranged in the gear housing part, which is intended to block a mechanical element when not mounted accessories, so that the power tool can not be turned on. Thus, the safe operation of the advantageous

Handwerkzeugmaschine gewährleistet werden. Hand tool can be guaranteed.

Erfindungsgemäß ist das mechanische Element als Schaltelement ausgeführt. Vorteilhafterweise ist das Schaltelement im Motorgehäuseteil angeordnet. Weist das Blockierelement einen Anschlag auf, bewegt sich der Schaltschieber bei nicht montiertem Zubehör gegen den Anschlag des Blockierelements. Somit wird vorteilhaft sichergestellt, dass die Handwerkzeugmaschine bei nicht montiertemAccording to the invention, the mechanical element is designed as a switching element. Advantageously, the switching element is arranged in the motor housing part. If the blocking element has a stop, the slide switch moves against the stop of the blocking element when accessories are not mounted. Thus, it is advantageously ensured that the power tool when not mounted

Zubehör nicht eingeschaltet wird. Somit wird vorteilhaft die sichere Bedienung der Handwerkzeugmaschine gewährleistet. Accessories are not switched on. Thus, the safe operation of the power tool is advantageously ensured.

In einer vorteilhaften Ausführungsform ist das mechanische Element als mechanische Welle, insbesondere als Motorwelle ausgeführt. In einer weiteren vorteilhaften Ausführungsform ist das mechanische Element als Abtriebswelle, insbesondere als Spindel ausgeführt ist. In an advantageous embodiment, the mechanical element is designed as a mechanical shaft, in particular as a motor shaft. In a further advantageous embodiment, the mechanical element is designed as an output shaft, in particular as a spindle.

Erfindungsgemäß weist das Blockierelement ein Drehgelenk auf. According to the invention, the blocking element has a rotary joint.

Vorteilhafterweise wird bei montiertem Zubehör das Blockierelement mit einer Kraft beaufschlagt und um eine Drehachse des Drehgelenks bewegt. Somit kann vorteilhaft durch Drehen des Blockierelements um die Drehachse des Advantageously, when the accessory is mounted, the blocking element is acted upon by a force and moved about an axis of rotation of the rotary joint. Thus, advantageously by rotating the blocking element about the axis of rotation of the

Drehgelenks der Anschlag des Blockierelements derart bewegt werden, dass der Schaltschieber die Handwerkzeugmaschine (10) einschalten kann. Rotary joint, the stop of the blocking element are moved so that the slide switch can turn on the power tool (10).

Weitere Vorteile und zweckmäßige Ausführungen sind der Figurenbeschreibung und den Zeichnungen zu entnehmen. Further advantages and expedient embodiments can be taken from the description of the figures and the drawings.

Zeichnungen drawings

In den Zeichnungen sind Ausführungsformen einer erfindungsgemäßen In the drawings, embodiments of an inventive

Handwerkzeugmaschine gezeigt. Hand tool shown.

Es zeigen: Show it:

Figur 1 eine Anordnung einer erfindungsgemäßen Handwerkzeugmaschine und eines Kontaktelements in schematischer Darstellung, 1 shows an arrangement of a hand tool according to the invention and a contact element in a schematic representation,

Figur 2 ein erster Ausschnitt einer Handwerkzugmaschine und ein erster Figure 2 shows a first section of a traction tractor and a first

Ausschnitt eines dazugehörigen Zubehörs in schematischer Darstellung,  Section of a related accessory in a schematic representation,

Figur 3 zwei Ausführungsform eines Zubehörs der erfindungsgemäßen Figure 3 shows two embodiment of an accessory of the invention

Handwerkzeugmaschine in schematischer Darstellung, Figur 4 eine zweite Ausführungsform der erfindungsgemäßen Hand tool in a schematic representation, FIG. 4 shows a second embodiment of the invention

Handwerkzeugmaschine und des Kontaktelements in schematischer Darstellung,  Hand tool and the contact element in a schematic representation,

Figur 5 eine dritte Ausführungsform der erfindungsgemäßen Figure 5 shows a third embodiment of the invention

Handwerkzeugmaschine und des Kontaktelements in schematischer Darstellung,  Hand tool and the contact element in a schematic representation,

Figur 6 eine erfindungsgemäße Handwerkzeugmaschine mit zwei weiteren 6 shows a hand tool according to the invention with two more

Ausführungsformen des Zubehörs.  Embodiments of the accessory.

Beschreibung description

Für die in den unterschiedlichen Ausführungsformen vorkommenden gleichen Bauteile werden dieselben Bezugszahlen verwendet. The same reference numerals are used for the same components occurring in the different embodiments.

Figur 1 zeigt eine Handwerkzeugmaschine 10. Bei der Handwerkzeugmaschine handelt es sich um einen Winkelschleifer, der üblicherweise ein FIG. 1 shows a handheld power tool 10. The handheld power tool is an angle grinder, which is usually a

Getriebegehäuseteil 12 aufweist, das ein Winkelgetriebe beherbergt. Aus dem Winkelgetriebe ragt eine Arbeitsspindel 14, auf der ein Schleif- und/oder Gear housing part 12 which houses a bevel gear. From the angle gear projects a work spindle 14 on which a grinding and / or

Trennwerkzeug 16 aufgebracht ist. Der Winkelschleifer weist ein Separating tool 16 is applied. The angle grinder has a

Motorgehäuseteil 18 zur Aufnahme einer elektromotorischen Antriebseinheit 20 auf. Motor housing part 18 for receiving an electric motor drive unit 20.

Im Getriebegehäuseteil 12 ist, wie in Figur 2 ersichtlich, ein maschinenseitiges Kontaktelement 24 angeordnet. Maschinenseitig bedeutet, dass das In the gear housing part 12, as shown in Figure 2, a machine-side contact element 24 is arranged. Machine side means that

Kontaktelement 24 in der Handwerkzeugmaschine 10 angeordnet ist. Im Contact element 24 is arranged in the power tool 10. in the

Ausführungsbeispiel nach Figur 2 ist das maschinenseitige Kontaktelement 24 ein Gewinde. Im Ausführungsbeispiel ist das Gewinde 24 im Getriebegehäuse 12 angeordnet. Es ist aber auch denkbar, dass das maschinenseitige Embodiment of Figure 2, the machine-side contact element 24 is a thread. In the exemplary embodiment, the thread 24 is arranged in the transmission housing 12. But it is also conceivable that the machine side

Kontaktelement 24 im Motorgehäuseteil 18 angeordnet ist. Es ist auch denkbar, dass mehr als ein maschinenseitiges Kontaktelement 24 in der Contact element 24 is arranged in the motor housing part 18. It is also conceivable that more than one machine-side contact element 24 in the

Handwerkzeugmaschine 10 angeordnet sind. Ein Zubehör 26 ist dazu vorgesehen, mit der Handwerkzeugmaschine 10 verbunden zu werden. Das Zubehör 26 weist ein zubehörseitiges Kontaktelement 28 auf. Zubehörseitig bedeutet, dass das Kontaktelement 28 im Zubehör 26 für die Handwerkzeugmaschine 10 angeordnet ist. Im Ausführungsbeispiel nach Figur 2 ist das Zubehör 26 ein Zusatzhandgriff 26a für die Hand tool 10 are arranged. An accessory 26 is intended to be connected to the power tool 10. The accessory 26 has an accessory-side contact element 28. On the accessory side, the contact element 28 is arranged in the accessory 26 for the handheld power tool 10. In the embodiment of Figure 2, the accessory 26 is an additional handle 26a for

Handwerkzeugmaschine 10. Der Zusatzhandgriff 26a weist als zubehörseitiges Kontaktelement 28 einen Gewindezapfen 29 auf, welcher in das Gewinde 24 des Getriebegehäuseteils 12 geschraubt wird. In der erfindungsgemäßen  Hand tool 10. The auxiliary handle 26a has as an accessory-side contact element 28 a threaded pin 29, which is screwed into the thread 24 of the gear housing part 12. In the invention

Ausführungsform ist das maschinenseitige Kontaktelement 24 und das zubehörseitige Kontaktelement 28 lösbar miteinander verbindbar. Embodiment is the machine-side contact element 24 and the accessory-side contact element 28 releasably connectable to each other.

Das Zubehör 26 für die Handwerkzeugmaschine 10 ist, wie in Figur 3 dargestellt, als Zusatzhandgriff 26a oder als Schutzhaube 26b ausgeführt. Der The accessory 26 for the hand tool 10 is, as shown in Figure 3, designed as an additional handle 26a or as a protective hood 26b. Of the

Zusatzhandgriff 26a ist dazu vorgesehen, von einem Bediener der Additional handle 26a is intended to be operated by an operator

Handwerkzeugmaschine umgriffen zu werden, sodass die Hand tool to be embraced, so that the

Handwerkzugmaschine 10 mit zwei Händen bedient werden muss.  Traction machine 10 must be operated with two hands.

Die Aufgabe der Schutzhaube 26b ist es, einen Bediener der The task of the protective hood 26b is to provide an operator of

Handwerkzeugmaschine 10 im Betrieb der Handwerkzeugmaschine 10 vor Funken und/oder Materialpartikeln, die im Betrieb der Handwerkzeugmaschine entstehen, und/oder vor mit großer Wucht nach außen geschleuderten Hand tool 10 during operation of the power tool 10 before sparks and / or material particles that arise during operation of the power tool, and / or thrown out with great force to the outside

Bruchstücken einer im Betrieb zerborstenen Scheibe zu schützen. To protect fragments of a disc burst during operation.

Ein Blockierelement 30 ist, wie in Figur 1 ersichtlich, im Getriebegehäuseteil 12 angeordnet. Ein mechanisches Element 32 ist benachbart zum BlockierelementA blocking element 30, as can be seen in FIG. 1, is arranged in the gearbox housing part 12. A mechanical element 32 is adjacent to the blocking element

30 angeordnet. Das mechanische Element 32 ist dazu vorgesehen, den Betrieb der Handwerkzeugmaschine 10 sicherzustellen. Das Blockierelement 30 ist dazu vorgesehen, bei nicht montiertem Zubehör 26 das mechanische Element 32 zu blockieren, sodass die Handwerkzeugmaschine 10 nicht in Betrieb gehen kann. 30 arranged. The mechanical element 32 is intended to ensure the operation of the power tool 10. The blocking element 30 is intended to block the mechanical element 32 when the accessory 26 is not mounted, so that the handheld power tool 10 can not be put into operation.

Das mechanische Element 32 ist im Ausführungsbeispiel in Figur 1 ein The mechanical element 32 is in the embodiment in Figure 1 a

Schaltelement 32. Figur 2 zeigt eine Detailansicht. Das Schaltelement 32 ist dazu vorgesehen, bei Betätigung eines Schalters 34 die elektromotorische Switching element 32. Figure 2 shows a detailed view. The switching element 32 is provided, upon actuation of a switch 34, the electromotive

Antriebseinheit 20 einzuschalten. Das Schaltelement 32 ist im Turn drive unit 20. The switching element 32 is in

Ausführungsbeispiel nach Figur 2 als Schaltschieber ausgebildet. Bei nicht montiertem Zubehör 26, beispielsweise bei nicht montierten Zusatzhandgriff 26a kann der Schaltschieber 32 bei Betätigung des Schalters 34 nicht bewegt werden, um die elektromotorische Antriebseinheit 20 einzuschalten, sodass die Handwerkzeugmaschine 10 nicht eingeschaltet werden kann. Embodiment of Figure 2 designed as a slide switch. Not at mounted accessory 26, for example, when not mounted auxiliary handle 26a, the slide switch 32 can not be moved upon actuation of the switch 34 to turn on the electric motor drive unit 20, so that the power tool 10 can not be turned on.

Das Blockierelement 30 ist im Ausführungsbeispiel nach Figur 1 als ein The blocking element 30 is in the embodiment of Figure 1 as a

Kippelement mit Drehgelenk 40 ausgeführt ist. Das Blockierelement 30 weist einen Anschlag 42 auf. Tilting element with swivel 40 is executed. The blocking element 30 has a stop 42.

Bei nicht montiertem Zusatzhandgriff 26a ist der Schaltschieber 32 nicht weiter in Richtung Getriebegehäuse 12 bewegbar, da er sich gegen den Anschlag 42 des Blockierelements 30 bewegt. Wird der Zusatzhandgriff 26a montiert, wird das Blockierelement 30 mit einer Kraft F beaufschlagt. Das Blockierelement 30 dreht sich dabei um eine Drehachse 50 des Drehgelenks 40. Durch Drehen des Blockierelements 30 um die Drehachse 50 des Drehgelenks 40, dreht der Anschlag 42 des Blockierelements 30 in eine Richtung R und ist für den When the auxiliary handle 26a is not mounted, the slide switch 32 can not be moved further in the direction of the transmission housing 12, since it moves against the stop 42 of the blocking element 30. If the auxiliary handle 26a is mounted, the blocking element 30 is acted upon by a force F. The blocking element 30 rotates about an axis of rotation 50 of the rotary joint 40. By rotating the blocking element 30 about the axis of rotation 50 of the rotary joint 40, the stop 42 of the blocking element 30 rotates in a direction R and is for the

Schaltschieber 32 kein Hindernis mehr. Im Falle des montierten Zusatzhandgriffs 26a kann der Schaltschieber 32 demnach in Richtung Getriebegehäuse 12 bewegt werden und die Handwerkzeugmaschine 10 einschalten. Slide valve 32 no longer an obstacle. In the case of the mounted auxiliary handle 26a, the slide switch 32 can therefore be moved in the direction of the transmission housing 12 and turn on the power tool 10.

Eine Rückstellkraft sorgt dafür, dass das Blockierelement 30 bei Demontage des Zusatzhandgriffs 26a wieder in seine Ausgangslage zurückkehrt. Die A restoring force ensures that the blocking element 30 returns to its original position upon disassembly of the auxiliary handle 26a. The

Rückstellkraft kann dadurch erzeugt werden, dass das Blockierelement 30 elastisch verformbar ist. Es ist aber auch denkbar, dass ein nicht gezeigtes zusätzliches Element, beispielsweise eine Rückstellfeder integriert ist. Restoring force can be generated in that the blocking element 30 is elastically deformable. But it is also conceivable that an additional element, not shown, for example, a return spring is integrated.

Weiterhin zeigt Figur 1 zeigt zwei Varianten, in denen die Montage der Furthermore, FIG. 1 shows two variants in which the assembly of the

Schutzhaube 26b abgefragt wird. Die Schutzhaube 26b weist einen Schutzhaubenbund 60 auf. Wird die Protective hood 26b is queried. The protective hood 26b has a protective collar 60. Will the

Schutzhaube 26b und damit der Schutzhaubenbund 60 auf die  Protective hood 26b and thus the protective cover collar 60 on the

Handwerkzeugmaschine 10 montiert, wird das Blockierelement 30 betätigt, welches um seine Drehachse 50 des Drehgelenks 40 dreht. Durch Drehen des Blockierelements 30 um die Drehachse 50 des Drehgelenks 40, dreht der Anschlag 42 des Blockierelements 30 in eine Richtung R und ist für den Schaltschieber 32 kein Hindernis mehr. Im Falle des montierten Zusatzhandgriffs 26a kann der Schaltschieber 32 demnach in Richtung Getriebegehäuse 12 bewegt werden und die Handwerkzeugmaschine 10 einschalten. Hand tool 10 mounted, the blocking element 30 is actuated, which rotates about its axis of rotation 50 of the rotary joint 40. By rotating the blocking element 30 about the axis of rotation 50 of the rotary joint 40, the stop 42 of the blocking element 30 rotates in a direction R and is for the Slide valve 32 no longer an obstacle. In the case of the mounted auxiliary handle 26a, the slide switch 32 can therefore be moved in the direction of the transmission housing 12 and turn on the power tool 10.

Figur 4 zeigt eine weitere Ausführungsform einer Handwerkzeugmaschine 10 mit einem Blockierelement 30 und einem mechanischen Element 32. FIG. 4 shows a further embodiment of a handheld power tool 10 with a blocking element 30 and a mechanical element 32.

Das mechanische Element 32 ist im Ausführungsbeispiel in Figur 4 eine The mechanical element 32 is in the embodiment in Figure 4 a

Motorwelle 32. Die Motorwelle 32 ist dazu vorgesehen, eine Rotationsbewegung über ein Getriebe an eine Abtriebswelle weiterzuleiten. Bei nicht montiertem Zubehör 26, beispielsweise bei nicht montierter Schutzhaube 26b ist die Motor shaft 32. The motor shaft 32 is intended to forward a rotational movement via a transmission to an output shaft. When not mounted accessories 26, for example, when not mounted guard 26b is the

Motorwelle 32 blockiert, sodass die Handwerkzeugmaschine 10 nicht in Betrieb gehen kann. Dabei wird zwischen einer verzahnten Hülse 62 und dem Motor shaft 32 is blocked, so that the power tool 10 can not go into operation. It is between a toothed sleeve 62 and the

Blockierelement 30 ein Formschluss gebildet. Das Blockierelement 30 ist im Ausführungsbeispiel nach Figur 4 mit einem Drehgelenk 40 ausgeführt. Wird die Schutzhaube 26b montiert, wird das Blockierelement 30 um das Drehgelenk 40 bewegt, womit der Formschluss zwischen dem Blockierelement 30 und der verzahnten Zahnhülse 62 aufgehoben wird. Blocking element 30 formed a positive connection. The blocking element 30 is designed in the embodiment of Figure 4 with a swivel joint 40. When the protective hood 26b is mounted, the blocking element 30 is moved about the swivel joint 40, whereby the positive connection between the blocking element 30 and the toothed toothed sleeve 62 is released.

Eine Rückstellkraft sorgt dafür, dass das Blockierelement 30 bei Demontage der Schutzhaube 26b wieder in seine Ausgangslage zurückkehrt. Die Rückstellkraft kann dadurch erzeugt werden, dass das Blockierelement 30 elastisch verformbar ist. Es ist aber auch denkbar, dass ein nicht gezeigtes zusätzliches Element, beispielsweise eine Rückstellfeder integriert ist. A restoring force ensures that the blocking element 30 returns to its original position when the protective hood 26b is removed. The restoring force can be generated in that the blocking element 30 is elastically deformable. But it is also conceivable that an additional element, not shown, for example, a return spring is integrated.

Figur 5 zeigt eine weitere Ausführungsform einer Handwerkzeugmaschine 10 mit einem Blockierelement 30 und einem mechanischen Element 32. FIG. 5 shows a further embodiment of a handheld power tool 10 with a blocking element 30 and a mechanical element 32.

Das mechanische Element 32 ist im Ausführungsbeispiel in Figur 5 Abtriebswelle 32, die als Spindel ausgeführt ist. The mechanical element 32 is in the embodiment in Figure 5 output shaft 32, which is designed as a spindle.

Das Blockierelement 30 wird in einem Lagerflansch 64 translatorische gelagert. Wird die Schutzhaube 26b montiert, wird das Blockierelement 30 mit Kraft F beaufschlagt und von der Position B in die Position A bewegt, wie in Figur 5 ersichtlich. Damit wird ein Formschluss zur Spindel 32 frei gegeben. Eine Rückstellkraft sorgt dafür, dass das Blockierelement 30 bei Demontage der Schutzhaube 26b wieder in seine Ausgangslage zurückkehrt. Die Rückstellkraft wird durch eine Rückstellfeder 66 erzeugt. The blocking element 30 is mounted translationally in a bearing flange 64. When the protective hood 26b is mounted, the blocking element 30 is subjected to force F and moved from the position B to the position A, as shown in FIG. For a positive connection to the spindle 32 is released. A restoring force ensures that the blocking element 30 returns to its original position when the protective hood 26b is removed. The restoring force is generated by a return spring 66.

In den Ausführungsformen nach den Figuren 1, 4 und 5 ist beispielsweise eine Kombination mit einem Spindellock 55 der Handwerkzeugmaschine 10 möglich. So wird der Spindellock freigegeben, wenn das Zubehör 26 montiert ist. In the embodiments according to FIGS. 1, 4 and 5, for example, a combination with a spindle lock 55 of the handheld power tool 10 is possible. Thus, the spindle lock is released when the accessory 26 is mounted.

Besitzt die Handwerkzeugmaschine 10 ein Bremssystem, ist die Bremse nur im montierten Zustand des Zubehörs 26 lösbar. If the handheld power tool 10 has a brake system, the brake can only be released in the assembled state of the accessory 26.

Figur 6 zeigt eine Handwerkzeugmaschine 10, wobei das Zubehör 26 als ein Bügelhandgriff 26d beziehungsweise als eine Absaughaube 26c ausgeführt. Denkbar sind auch Kombinationen des Zubehörs der Ausführungsbeispiele in den Figuren. So ist es denkbar, dass eine Handwerkzeugmaschine 10 mit Schutzhabe 26b und Bügelhandgriff 26d ausgestattet. Genauso gut ist es denkbar, dass eine Handwerkzeugmaschine 10 mit Zusatzhandgriff 26a und Absaughaube 26c ausgestattet ist. FIG. 6 shows a handheld power tool 10, wherein the accessory 26 is designed as a bow-type handle 26d or as a suction hood 26c. Combinations of the accessories of the embodiments in the figures are also conceivable. Thus, it is conceivable that a hand tool 10 equipped with protection 26b and strap handle 26d. It is just as conceivable that a hand tool 10 is equipped with additional handle 26a and suction hood 26c.

Claims

Ansprüche claims 1. Handwerkzeugmaschine (10), insbesondere Winkelschleifer mit einem 1. Hand tool (10), in particular angle grinder with a Getriebegehäuseteil (12), wobei das Getriebegehäuseteil (12) mindestens ein maschinenseitiges Kontaktelement (24) aufweist, mit einem Zubehör (26), wobei das Zubehör (26) mindestens ein zubehörseitiges Kontaktelement (28) aufweist, dadurch gekennzeichnet, dass bei montiertem Zubehör (26) an der Handwerkzeugmaschine (10) das maschinenseitige Kontaktelement (24) mit dem zubehörseitigen  Gearbox housing part (12), wherein the gearbox housing part (12) has at least one machine-side contact element (24) with an accessory (26), wherein the accessory (26) has at least one contact-side contact element (28), characterized in that when accessories are mounted ( 26) on the hand tool (10) the machine-side contact element (24) with the accessory side Kontaktelement (28) in Kontakt kommt.  Contact element (28) comes into contact. 2. Handwerkzeugmaschine (10) nach Anspruch 1, dadurch gekennzeichnet, dass ein Blockierelement (30) im Getriebegehäuseteil (12) angeordnet ist, das dazu vorgesehen ist, bei nicht montiertem Zubehör (26) eine mechanisches Element (32) zu blockieren, sodass die Handwerkzeugmaschine (10) nicht eingeschaltet werden kann. 2. Hand tool (10) according to claim 1, characterized in that a blocking element (30) in the gear housing part (12) is arranged, which is intended to block a non-mounted accessory (26), a mechanical element (32), so that the Hand tool (10) can not be turned on. 3. Handwerkzeugmaschine (10) nach Anspruch 2, dadurch gekennzeichnet, dass das mechanische Element (32) als Schaltelement (32), insbesondere als Schaltschieber ausgeführt ist. 3. Hand tool (10) according to claim 2, characterized in that the mechanical element (32) is designed as a switching element (32), in particular as a slide switch. 4. Handwerkzeugmaschine (10) nach Anspruch 2, dadurch gekennzeichnet, dass das mechanische Element (32) als mechanische Welle (32), insbesondere als Motorwelle ausgeführt ist. 4. Hand tool (10) according to claim 2, characterized in that the mechanical element (32) is designed as a mechanical shaft (32), in particular as a motor shaft. 5. Handwerkzeugmaschine (10) nach Anspruch 2, dadurch gekennzeichnet, dass das mechanische Element (32) als Abtriebswelle (32), insbesondere als Spindel ausgeführt ist. 5. Hand tool (10) according to claim 2, characterized in that the mechanical element (32) is designed as an output shaft (32), in particular as a spindle. 6. Handwerkzeugmaschine (10) nach einem der Ansprüche 2 bis 5, dadurch 6. Hand tool (10) according to one of claims 2 to 5, characterized gekennzeichnet, dass das Blockierelement (30) einen Anschlag (42) aufweist, wobei sich das mechanische Element (32) bei nicht montiertem Zubehör (26) gegen den Anschlag (42) des Blockierelements (30) bewegt. characterized in that the blocking element (30) has a stop (42), wherein the mechanical element (32) moves against the stop (42) of the blocking element (30) when the accessory (26) is not mounted. 7. Handwerkzeugmaschine (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Blockierelement (30) ein Drehgelenk (40) aufweist. 7. Hand tool (10) according to one of the preceding claims, characterized in that the blocking element (30) has a swivel joint (40). 8. Handwerkzeugmaschine (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass bei montiertem Zubehör (26a, 26b) das Blockierelement (30) mit einer Kraft F beaufschlägt wird, wobei das Blockierelement (30) um eine 8. Hand tool (10) according to one of the preceding claims, characterized in that when mounted accessories (26 a, 26 b), the blocking element (30) is acted upon by a force F, wherein the blocking element (30) around a Drehachse (50) des Drehgelenks (40) bewegt wird.  Rotary axis (50) of the rotary joint (40) is moved. 9. Handwerkzeugmaschine (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass durch Drehen des Blockierelements (30) um die Drehachse (50) des Drehgelenks (40) der Anschlag (50) des Blockierelements (30) derart bewegt wird, dass das mechanische Element (32) in Richtung des Getriebegehäuses (12) bewegt werden und die Handwerkzeugmaschine (10) einschalten kann. 9. Hand tool (10) according to one of the preceding claims, characterized in that by rotation of the blocking element (30) about the axis of rotation (50) of the rotary joint (40) of the stop (50) of the blocking element (30) is moved such that the mechanical element (32) in the direction of the transmission housing (12) are moved and the hand tool (10) can turn on.
EP16788712.4A 2015-12-02 2016-11-02 Hand-held power tool having at least one machine-side contact element Active EP3383585B1 (en)

Applications Claiming Priority (2)

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DE102015224006.1A DE102015224006A1 (en) 2015-12-02 2015-12-02 Hand tool with at least one machine-side contact element
PCT/EP2016/076374 WO2017092947A1 (en) 2015-12-02 2016-11-02 Hand-held power tool having at least one machine-side contact element

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EP3383585A1 true EP3383585A1 (en) 2018-10-10
EP3383585B1 EP3383585B1 (en) 2023-03-29

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EP (1) EP3383585B1 (en)
CN (1) CN108367409B (en)
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CN108367409A (en) 2018-08-03
US20180326554A1 (en) 2018-11-15
WO2017092947A1 (en) 2017-06-08
US11260502B2 (en) 2022-03-01
EP3383585B1 (en) 2023-03-29
CN108367409B (en) 2021-03-19
DE102015224006A1 (en) 2017-06-08

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