EP3653344A1 - Machine-outil portative fonctionnant sur accumulateur - Google Patents

Machine-outil portative fonctionnant sur accumulateur Download PDF

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Publication number
EP3653344A1
EP3653344A1 EP18205839.6A EP18205839A EP3653344A1 EP 3653344 A1 EP3653344 A1 EP 3653344A1 EP 18205839 A EP18205839 A EP 18205839A EP 3653344 A1 EP3653344 A1 EP 3653344A1
Authority
EP
European Patent Office
Prior art keywords
hand
tool
battery unit
protective
protective bracket
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP18205839.6A
Other languages
German (de)
English (en)
Inventor
Philipp Lorenz
Michael Göttlinger
Karsten Frenzel
Bernhard Liebert
Tobias Koeniger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hilti AG
Original Assignee
Hilti AG
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 Hilti AG filed Critical Hilti AG
Priority to EP18205839.6A priority Critical patent/EP3653344A1/fr
Publication of EP3653344A1 publication Critical patent/EP3653344A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/02—Construction of casings, bodies or handles
    • 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
    • B25F5/006—Vibration damping means

Definitions

  • the present invention relates to a battery-operated hand-held power tool with a receiving bay which is designed for the releasable receiving of a battery unit.
  • the present invention also relates to a system with a battery-operated hand tool and with at least one battery unit, which is designed for releasable reception in the receiving bay of the hand tool.
  • Handheld power tools of the type mentioned at the outset are generally known from the prior art, for example in the form of cordless rotary hammers or cordless combination hammers. These are supplied with electrical current by a rechargeable battery unit which can be detachably received in the receiving bay or is to be received. The power transmission from the rechargeable battery unit to the handheld power tool typically takes place via a rechargeable battery interface which is arranged on or in the receiving bay.
  • the hand-held power tool has a protective bracket that surrounds the battery unit on both sides when it is accommodated in the receiving bay, so that a fall energy is at least partially absorbed by the protective bracket and is thus kept away from the battery unit.
  • the invention includes the finding that a rechargeable battery unit that is accommodated in a battery-operated hand-held power tool of the prior art is only insufficiently secured against undesired falls. In the event of a fall, the entire effective fall energy must be absorbed by the battery unit itself, which often leads to destruction of the battery unit - or at least to its functional impairment. Battery units are known from the prior art, in which a housing of the battery unit absorbs part of the fall energy.
  • a handheld power tool which has a protective bracket which surrounds the battery unit on both sides, so that a fall energy is at least partially absorbed by the protective bracket and is thus kept away from the battery unit.
  • a Such a protective framework creates the basis for increased operational safety of a battery-operated hand tool.
  • the protective bar is designed in the form of a shell, preferably in the form of a U-shell.
  • the protective bar is preferably formed in one piece.
  • the protective bar particularly preferably has a rib structure. It has proven to be advantageous if the protective bracket designed in the form of a U-shell has two spaced-apart protective arms which are connected to one another via a mounting plate.
  • the protective bracket can be screwed to the housing of the handheld power tool via the mounting plate.
  • the protective arms particularly preferably run diagonally to a tool axis of the hand power tool. Exactly two protective arms are particularly preferably provided.
  • the protective arms each have a shock absorber, which is preferably formed by a recess in the respective protective arm.
  • the protective bar is arranged in a stationary manner with respect to the receiving bay on the handheld power tool.
  • the protective bracket is spaced on both sides of the battery unit when the battery unit is accommodated in the receiving bay. In this way, essentially all of the fall energy can be absorbed by the protective bar.
  • the protective bracket can be spaced apart from the battery unit on at least one side, which at least partially reduces the load on the battery unit from falling energy.
  • the protective bracket is formed in one piece with a housing section of the hand power tool.
  • the housing section is preferably a handle of the hand power tool.
  • the protective bracket can be molded onto a handle of the hand tool.
  • the protective bracket can be designed as a component that is different from a handle of the hand tool.
  • the protective bracket is screwed to the handle of the hand power tool, preferably on the underside thereof.
  • the protective bar consists of or has an elastically deformable plastic.
  • An elasticity of the protective bracket is preferably greater than an elasticity of a main housing of the hand tool.
  • the electric hand tool is particularly preferably designed as a cordless rotary hammer or cordless combination hammer.
  • the invention is also achieved by a system with a battery-operated hand-held power tool of the type described above and with at least one rechargeable battery unit which is designed for releasable reception in the receiving bay of the hand-held power tool.
  • the system can have battery units of different sizes (capacity), the spatial extent of the protective bar being fixed, ie in particular the same size for battery units of different sizes.
  • FIG Fig. 1 A preferred exemplary embodiment of a battery-operated handheld power tool 100 according to the invention is shown in FIG Fig. 1 shown.
  • the handheld power tool 100 is designed as a cordless combination hammer.
  • the handheld power tool 100 has a main housing 70 in which an electric motor, not shown here, which is used to operate the handheld power tool 100.
  • the handheld power tool 100 has a handle 80 which is arranged on a rear side RS of the handheld power tool 100.
  • a control switch 95 is arranged within the handle 80 and can be used to control an operation (for example speed) of the hand tool 100.
  • the hand power tool 100 has a receiving bay 90, which is designed for the releasable receiving of a battery unit 200.
  • a battery unit 200 in the form of a battery with two battery layers with a comparatively high output is included.
  • the battery unit 200 is electrically contacted via a battery interface 95 within the receptacle 90, which is shown in FIG Fig. 2 is clearly recognizable.
  • the battery unit 200 is held mechanically by the battery interface 95.
  • the battery-operated hand tool 100 and the battery unit 200 define a system 500.
  • the handheld power tool 100 has a protective bracket 10 which surrounds the battery unit 200 accommodated in the receiving bay 90 on both sides, so that a fall energy is at least partially absorbed by the protective bracket 10 and thus kept away from the battery unit 200.
  • Fig. 1 A shows the hand-held power tool 100 with a protective bracket 10.
  • the exposed protective bracket 10 is shown in Fig. 2 B) to see.
  • the protective bracket 10 is designed in the form of a U-shell.
  • the protective bracket 10 is formed in one piece as a component different from the handle 80 of the hand-held power tool 100 and screwed to the handle 80 of the hand-held power tool 100 (cf. Fig. 3 ).
  • the protective bracket 10 has exactly two spaced-apart protective arms 21, 23.
  • the protective arms 21, 23 are connected to one another via a mounting plate 25.
  • the rib structure of both the protective arms 21, 23 and the mounting plate 25 is clearly visible.
  • the protective arms 21, 23 are spaced apart from one another in such a way that that they can insert an insertion lane 15 on the rear side RS and the underside US and can be inserted into the receiving bay 90 by the battery unit 200.
  • the protective arms 21, 23 run diagonally (diagonal axis DA) to a tool axis WA of the hand tool 100.
  • Fig. 1 can also be removed, the protective bracket 10 is arranged stationary with respect to the receiving bay 90 on the handheld power tool 100.
  • the protective bracket 10 remains on the handheld power tool 100.
  • the protective bracket 10 is different from the battery unit 200 and / or different from any protective measure provided on the battery unit 200.
  • the protective bracket 10 is spaced on both sides from the battery unit 200 when the battery unit 200 (as in FIG Fig. 1 shown) is accommodated in the receiving bay 90.
  • the battery unit 200 is held mechanically only by the battery interface 95 in the hand tool 100. In this way, essentially the entire fall energy can be absorbed by the protective bracket 10 and kept away from the battery unit 200.
  • the protective bracket 10 consists of an elastically deformable plastic. Other materials such as composite materials are conceivable. An elasticity of the protective bracket 10 is greater than an elasticity of the main housing 70 of handheld power tool 100.
  • Fig. 2 shows the embodiment of Fig. 1 without battery pack 200 with a view of the rear RS.
  • the battery interface 95 arranged inside the receiving bay 90 can be clearly seen. It can also be clearly seen that the protective arms 21, 23 run diagonally (diagonal axis DA) to the tool axis WA of the handheld power tool 100.
  • Fig. 3 shows the embodiment of Fig. 1 and 2nd without battery unit in bottom view.
  • the battery interface 95 has not been shown here.
  • the central mounting plate 25, which is formed in one piece with the protective arms 21, 23 and via which the protective bracket 10 is screwed to an underside US of the handle 80, can be clearly seen. With the battery interface 95 installed (cf. Fig. 2 ) the mounting plate 25 is located between the battery interface 95 and the handle 80. In other words, the battery interface 95 lies within a volume which is spanned by the protective bracket 10 designed as a U-shell.
  • Fig. 4 shows a second preferred embodiment of a hand-held power tool 100 according to the invention with the rechargeable battery unit 200 in a side view.
  • the handheld power tool 100 is shown with a protective bracket 10.
  • the exempt Guard 10 is in Fig. 4 B) to see.
  • the protective bracket 10 in the embodiment of Fig. 4 two shock absorbers 22, 24 on.
  • the shock absorbers 22, 24 are arranged terminally on the protective arms 21, 23, these being formed by a respective recess in the respective protective arm 21, 23.
  • FIG Fig. 5 A third preferred exemplary embodiment of a handheld power tool according to the invention with a accommodated battery unit in a side view is shown in FIG Fig. 5 shown. It shows 5 A) the hand machine tool 100 in side view and Fig. 5 B) the handheld power tool 100 from its rear side RS.
  • handheld power tool 100 has the Fig. 5 a protective bracket 10, which surrounds the battery unit 200 accommodated in the receiving bay 90 on both sides, so that a fall energy is at least partially absorbed by the protective bracket 10 and thus kept away from the battery unit 200.
  • the protective bracket 10 is arranged in a stationary manner with respect to the receiving bay 90 on the handheld power tool 100. Furthermore, the protective bracket 10, as from Fig. 5 B) can be seen, spaced on both sides from the battery unit 200 when the battery unit 200 is received in the receiving bay 90.
  • the protective bracket 10 has exactly two spaced-apart protective arms 21, 23 which run diagonally (diagonal axis DA) to a tool axis WA of the hand tool 100.
  • the protective arms 21, 23 are spaced apart from one another in such a way that they can span an insertion lane 15 and can be inserted by the battery unit 200.
  • the handheld power tool 100 is the Fig. 5
  • the protective bracket 10 is formed in one piece and in one piece with a housing section of the hand tool 100, the housing section in the present case being a handle 80 of the hand tool 100. This can be achieved, for example, by spraying the protective bracket 10 onto the handle 80.
  • Fig. 6 finally shows the embodiment of Fig. 5 , with only one of the exactly two protective arms 21 being recognizable.
  • the handheld power tool 100 in the receiving bay Fig. 6 only one battery unit 200 with two battery layers added.
  • the system 500 can thus have battery units of different sizes (capacity), the spatial extent of the protective bracket 10 being fixed, ie in particular the same size for battery units of different sizes.
EP18205839.6A 2018-11-13 2018-11-13 Machine-outil portative fonctionnant sur accumulateur Withdrawn EP3653344A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP18205839.6A EP3653344A1 (fr) 2018-11-13 2018-11-13 Machine-outil portative fonctionnant sur accumulateur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18205839.6A EP3653344A1 (fr) 2018-11-13 2018-11-13 Machine-outil portative fonctionnant sur accumulateur

Publications (1)

Publication Number Publication Date
EP3653344A1 true EP3653344A1 (fr) 2020-05-20

Family

ID=64308577

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18205839.6A Withdrawn EP3653344A1 (fr) 2018-11-13 2018-11-13 Machine-outil portative fonctionnant sur accumulateur

Country Status (1)

Country Link
EP (1) EP3653344A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5354215A (en) * 1993-06-24 1994-10-11 Viracola Joseph R Circuit interconnect for a power tool
DE29513651U1 (de) * 1995-08-25 1997-01-02 Scintilla Ag Batteriegespeistes Elektrohandwerkzeug mit Batterie-Baueinheit und Batterie-Baueinheit für ein Elektrohandwerkzeug
DE202006015385U1 (de) * 2006-10-07 2006-11-30 Metabowerke Gmbh Elektrohandwerkzeuggerät
EP2080594A1 (fr) * 2008-01-21 2009-07-22 Makita Corporation Outil électrique et protecteur pour outil électrique
US20110005793A1 (en) * 2006-09-07 2011-01-13 Htiachi Koki Co., Ltd. Battery pack and motor-driven tool using the same
US20120061117A1 (en) * 2010-09-13 2012-03-15 Makita Corporation Rechargeable electric tool
US20170202137A1 (en) * 2014-07-23 2017-07-20 Yamabiko Corporation Battery-powered working machine
US20180304454A1 (en) * 2017-04-24 2018-10-25 Makita Corporation Electrical device

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5354215A (en) * 1993-06-24 1994-10-11 Viracola Joseph R Circuit interconnect for a power tool
DE29513651U1 (de) * 1995-08-25 1997-01-02 Scintilla Ag Batteriegespeistes Elektrohandwerkzeug mit Batterie-Baueinheit und Batterie-Baueinheit für ein Elektrohandwerkzeug
US20110005793A1 (en) * 2006-09-07 2011-01-13 Htiachi Koki Co., Ltd. Battery pack and motor-driven tool using the same
DE202006015385U1 (de) * 2006-10-07 2006-11-30 Metabowerke Gmbh Elektrohandwerkzeuggerät
EP2080594A1 (fr) * 2008-01-21 2009-07-22 Makita Corporation Outil électrique et protecteur pour outil électrique
US20120061117A1 (en) * 2010-09-13 2012-03-15 Makita Corporation Rechargeable electric tool
US20170202137A1 (en) * 2014-07-23 2017-07-20 Yamabiko Corporation Battery-powered working machine
US20180304454A1 (en) * 2017-04-24 2018-10-25 Makita Corporation Electrical device

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