EP2146820B2 - Machine-outil, notamment machine-outil manuelle - Google Patents

Machine-outil, notamment machine-outil manuelle Download PDF

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Publication number
EP2146820B2
EP2146820B2 EP08708891.0A EP08708891A EP2146820B2 EP 2146820 B2 EP2146820 B2 EP 2146820B2 EP 08708891 A EP08708891 A EP 08708891A EP 2146820 B2 EP2146820 B2 EP 2146820B2
Authority
EP
European Patent Office
Prior art keywords
housing
air guide
power tool
functional section
lateral surface
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.)
Active
Application number
EP08708891.0A
Other languages
German (de)
English (en)
Other versions
EP2146820A1 (fr
EP2146820B1 (fr
Inventor
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
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Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2146820A1 publication Critical patent/EP2146820A1/fr
Publication of EP2146820B1 publication Critical patent/EP2146820B1/fr
Application granted granted Critical
Publication of EP2146820B2 publication Critical patent/EP2146820B2/fr
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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
    • 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
    • B25F5/008—Cooling means
    • 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

Definitions

  • the invention relates to a machine tool, in particular a hand tool such. an angle grinder, with a tool driving a drive motor according to the preamble of claim 1.
  • the DE 102 48 921 A1 shows an electric hand tool having a motor housing with an electric drive motor and a transmission housing with gear components and a tool shaft for receiving a tool. Between the motor housing and the transmission housing is an air guide ring, which forms part of the housing. The air guide carries a switching element.
  • the DE 295 01 974 U1 discloses an air guide ring in a two-part housing of the power tool. The air guide ring has flow outlet openings, which are directed in the longitudinal direction, relative to the engine longitudinal axis.
  • the DE 29 10 845 A1 shows a hand drill, which has an air guide in the grip area.
  • Such hand tool machines may be provided with an air guide in the housing, which derives a drive motor sweeping and cooling air flow from the housing.
  • the invention is based on the object with simple constructive measures a machine tool, in particular a hand tool, which has an air guide in the housing to improve to the effect that beyond the air guide function additional functions can be taken over by the air guide.
  • the machine tool according to the invention which is in particular a hand tool, for example an angle grinder, has a tool driving a drive motor and an air guide, which is arranged in the housing of the machine tool and derives a drive motor sweeping air flow to the outside. Furthermore, it is provided that the air guide element has a functional portion which forms part of the outer circumferential surface of the machine tool.
  • the air guide element is consequently not completely integrated into the housing interior, but rather the functional section of the air guide element projects through the housing, so that in this area the jacket surface of the machine tool is formed by the projecting outside of the functional section. This makes it possible to provide the function section various additional functions, which can be realized with only a small design effort.
  • the functional portion is advantageously formed integrally with the air guide, which is preferably designed as a plastic part, in particular as an injection molded part.
  • the air guide element is constructed in two parts and comprises an air guide ring and an air guide disc.
  • the functional portion forms part of the outer lateral surface of the power tool and is designed as anti-rotation between the housing parts, with the help of the anti-rotation element a positive connection between the housing parts can be generated, which is effective in particular in the circumferential direction, but also in the axial direction.
  • the housing parts are thus securely locked against each other, wherein the positive connection can be made either between only one housing part and the functional portion or between the two housing parts and the functional portion.
  • mounting the functional section can also serve as a joining aid.
  • the functional section may just project through a recess in the housing so far that a continuous lateral surface without elevation or depression is formed.
  • the components of the air guide element are in contact and the functional section is arranged on the air guide disk.
  • Hand tool 1 shown is an angle grinder according to the prior art, which has an electric drive motor 2 in a motor housing 3, which is connected to a transmission housing 4.
  • a gear not shown, is received, which is driven by the rotor of the electric drive motor and transmits the rotational movement of the rotor to a rotating tool.
  • an air flow 5 is generated in the interior of the motor housing 3, which is guided along the drive motor and derived via an air guide element 6 from the housing.
  • the air guide element 6 is constructed in two parts and comprises an air guide disk 7 and an air guide ring 8.
  • Air guide disk 7 and air guide ring 8 are arranged in the transition region between the motor housing 3 and the transmission housing 4, the air guide disk 7 being connected to the transmission housing 4 and the air guide ring 8 being connected to the motor housing 3 , In the mounted position, the air guide ring 8 and the air guide disc 7 interact, both components are in contact with each other, wherein a flow path for the discharge of the air flow 5 is formed between the components.
  • FIGS. 2 and 3 As the perspective views of a spoiler 7 in the FIGS. 2 and 3 can be seen distributed over the circumference several individual functional portions 9 integrally formed with the air guide 7. Since the functional sections 9 extend into recesses in the housing, the functional sections 9 have a greater radial distance from the central axis than the remaining areas of the air-guiding disk.
  • Fig. 4 The side view after Fig. 4 It can be seen that the functional portion 9 is positioned adjacent to the parting line 11 between the motor housing 3 and the gear housing 4.
  • a recess 12 is introduced, wherein the shape of the recess 12 and the shape of the functional portion 9 are adapted to each other, so that the functional portion completely fills the recess 12.
  • the recess 12 is located at a small distance from the parting line 11 between the motor housing 3 and the gear housing 4 Figure 4 hinted with reference numeral 13, the rotating tool located on the bottom of the gear housing.
  • the function section 9 takes on the task of a Vermosschommes institutes to prevent mutual rotation of the motor housing 3 and the gear housing 4.
  • a recess in the housing wall of both housing parts is introduced in the region of the parting line 11 between the motor housing 3 and the gear housing 4, which recess is jointly occupied by the functional section 9.
  • the functional section 9 thus extends partly into the area of the motor housing 3 and partly into the area of the gear housing 4.
  • FIGS. 7 to 9 A further example of an anti-twist device according to the invention can be found in FIGS. 7 to 9.
  • the functional section 9 is introduced into a recess in the motor housing 3 and has on its outside a toothing which interacts with a lever 15 which is pivotable on the upper side of the gear housing 4 is arranged.
  • This lever 15 is to be adjusted between the engagement position shown in Fig. 8 and the engagement position shown in Fig. 9, in which the lever 15 engages latching in the toothing on the outside of the functional portion 9.
  • This can also be a Relative rotation of the two housing parts 3 and 4 are prevented from each other.
  • an additional axial locking can be realized, so that as seen in the axial direction, a release of the housing parts 3 and 4 is prevented from each other.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Sawing (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
  • Motor Or Generator Frames (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)

Claims (7)

  1. Machine-outil, en particulier machine-outil manuelle, par exemple une meuleuse d'angle (1), comprenant un moteur d'entraînement (2) entraînant un outil (13) et un élément de guidage d'air (6) qui est disposé dans le boîtier en deux parties de la machine-outil (1) et qui guide vers l'extérieur un flux d'air (5) balayant le moteur d'entraînement (2), l'élément de guidage d'air (6) présentant une portion fonctionnelle (9) qui forme une partie de la surface d'enveloppe extérieure (10) de la machine-outil,
    l'élément de guidage d'air (6) étant construit en deux parties et comprenant une bague de guidage d'air (8) et un disque de guidage d'air (7), en ce que la portion fonctionnelle (9) de l'élément de guidage d'air (6) est disposée entre les parties de boîtier (3, 4) ou à côté de la ligne de séparation (11) entre les parties de boîtier (3, 4), et en ce que la bague de guidage d'air (8) est disposée dans la première partie de boîtier (3) et le disque de guidage d'air (7) est disposé dans la deuxième partie de boîtier (4), caractérisée en ce que la portion fonctionnelle (9) forme une partie de la surface d'enveloppe extérieure de la machine-outil manuelle et est réalisée sous forme d'élément de fixation contre la rotation entre les parties de boîtier (3, 4), à l'aide de l'élément de fixation contre la rotation, un ajustement serré entre les parties de boîtier (3, 4) peut être produit, lequel est efficace en particulier en direction circonférentielle, mais aussi en direction axiale et bloque l'une contre l'autre de manière sûre les parties de boîtier (3, 4), l'ajustement serré pouvant être produit soit entre une seule partie de boîtier (3) et la portion fonctionnelle (9), soit entre les deux parties de boîtier (3, 4) et la portion fonctionnelle (9).
  2. Machine-outil selon la revendication 1,
    caractérisée en ce que la portion fonctionnelle (9) s'étend à travers un évidement (12) dans le boîtier.
  3. Machine-outil selon la revendication 1 ou 2,
    caractérisée en ce que la portion fonctionnelle (9) est insérée dans la surface d'enveloppe (12) du boîtier.
  4. Machine-outil selon l'une quelconque des revendications 1 à 3,
    caractérisée en ce que la portion fonctionnelle (9) fait saillie au-dessus de la surface d'enveloppe (12) du boîtier.
  5. Machine-outil selon l'une quelconque des revendications 1 à 4,
    caractérisée en ce que la bague de guidage d'air (8) est en contact avec le disque de guidage d'air (7) .
  6. Machine-outil selon l'une quelconque des revendications 1 à 5,
    caractérisée en ce qu'il est prévu plusieurs portions fonctionnelles (9) réparties sur la périphérie, pénétrant dans la surface d'enveloppe (10) ou formant la surface d'enveloppe (10).
  7. Machine-outil selon l'une quelconque des revendications 1 à 6,
    caractérisée en ce que les parties de boîtier sont formées par un boîtier de moteur (3) recevant le moteur d'entraînement (2) et par un boîtier de transmission (4) recevant une transmission.
EP08708891.0A 2007-04-12 2008-02-12 Machine-outil, notamment machine-outil manuelle Active EP2146820B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007017243A DE102007017243A1 (de) 2007-04-12 2007-04-12 Werkzeugmaschine, insbesondere Handwerkzeugmaschine
PCT/EP2008/051649 WO2008125368A1 (fr) 2007-04-12 2008-02-12 Machine-outil, notamment machine-outil manuelle

Publications (3)

Publication Number Publication Date
EP2146820A1 EP2146820A1 (fr) 2010-01-27
EP2146820B1 EP2146820B1 (fr) 2011-07-13
EP2146820B2 true EP2146820B2 (fr) 2019-10-16

Family

ID=39431175

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08708891.0A Active EP2146820B2 (fr) 2007-04-12 2008-02-12 Machine-outil, notamment machine-outil manuelle

Country Status (7)

Country Link
US (1) US8113922B2 (fr)
EP (1) EP2146820B2 (fr)
CN (1) CN101657297B (fr)
AT (1) ATE516112T1 (fr)
DE (1) DE102007017243A1 (fr)
RU (1) RU2472607C2 (fr)
WO (1) WO2008125368A1 (fr)

Families Citing this family (32)

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DE102008059599A1 (de) * 2008-11-28 2010-06-02 Aeg Electric Tools Gmbh Elektrowerkzeug
DE102008063510A1 (de) 2008-12-10 2010-06-17 Flex-Elektrowerkzeuge Gmbh Handgehaltene Werkzeugmaschine
CN102149515B (zh) * 2009-01-30 2014-08-06 日立工机株式会社 电动工具
DE102009026516A1 (de) 2009-05-27 2010-12-02 Robert Bosch Gmbh Werkzeugmaschine, insbesondere Handwerkzeugmaschine
DE102009026519A1 (de) 2009-05-27 2010-12-02 Robert Bosch Gmbh Werkzeugmaschine, insbesondere Handwerkzeugmaschine
JP5395531B2 (ja) * 2009-06-19 2014-01-22 株式会社マキタ 作業工具
DE202011001475U1 (de) * 2011-01-13 2011-03-17 Metabowerke Gmbh Elektrowerkzeugmaschine, insbesondere eine Schleif- oder Poliermaschine
US8348727B2 (en) * 2011-05-26 2013-01-08 Black & Decker Inc. Airflow arrangement for a power tool
DE102012103603A1 (de) 2012-04-24 2013-10-24 C. & E. Fein Gmbh Handführbare Werkzeugmaschine mit Lüftereinrichtung
US20130299207A1 (en) * 2012-05-10 2013-11-14 Black & Decker, Inc. Power tool cooling
DE102012223897A1 (de) * 2012-12-20 2014-06-26 Robert Bosch Gmbh Handwerkzeugmaschine
DE102013219450A1 (de) * 2013-09-26 2015-03-26 Robert Bosch Gmbh Batteriebetriebener Exzenterschleifer mit einem elektronisch kommutierten Elektromotor
US20150151424A1 (en) 2013-10-29 2015-06-04 Black & Decker Inc. Power tool with ergonomic handgrip
USD725981S1 (en) 2013-10-29 2015-04-07 Black & Decker Inc. Screwdriver with nosepiece
US9954418B2 (en) 2014-03-17 2018-04-24 Makita Corporation Power tool
EP2946887B1 (fr) * 2014-05-20 2017-08-23 Black & Decker Inc. Ensemble de séparation de particules pour un outil électrique
DE102014210915A1 (de) * 2014-06-06 2015-12-17 Robert Bosch Gmbh Elektrowerkzeugmaschine
US9475172B2 (en) 2014-07-15 2016-10-25 Milwaukee Electric Tool Corporation Adjustable guard for power tool
GB201413008D0 (en) * 2014-07-23 2014-09-03 Black & Decker Inc A range of power tools
DE102015111717A1 (de) * 2015-07-20 2017-01-26 Metabowerke Gmbh Luftleitscheibe
JP6646373B2 (ja) * 2015-07-23 2020-02-14 京セラインダストリアルツールズ株式会社 手持ち式電動工具
US10661426B2 (en) * 2016-02-19 2020-05-26 Makita Corporation Work tool with vibration dampers
DE102016210853A1 (de) * 2016-06-17 2017-12-21 Robert Bosch Gmbh Handwerkzeugmaschine mit einer Kühleinheit
DE202018104460U1 (de) * 2017-09-29 2018-08-16 Nanjing Chervon Industry Co., Ltd. Elektrohandwerkzeug
DE102018208048A1 (de) * 2018-05-23 2019-11-28 Robert Bosch Gmbh Handwerkzeugmaschine
EP3603898B1 (fr) * 2018-08-03 2021-04-14 Andreas Stihl AG & Co. KG Appareil de travail portatif
DE102018217155A1 (de) * 2018-10-08 2020-04-09 Robert Bosch Gmbh Handwerkzeugmaschine
JP7210261B2 (ja) 2018-12-14 2023-01-23 株式会社マキタ 電動作業機及び電動作業機用モータにおけるステータの製造方法
SE543413C2 (en) * 2019-05-03 2021-01-05 Husqvarna Ab Hand-held electrically powered device
DE202019106967U1 (de) * 2019-12-13 2021-03-16 C. & E. Fein Gmbh Elektrische Handwerkzeugmaschine
DE102020214817A1 (de) * 2019-12-30 2021-07-01 Robert Bosch Gesellschaft mit beschränkter Haftung Werkzeugmaschine und Verfahren zu einem Kühlen einer Antriebseinheit der Werkzeugmaschine
CN113560664A (zh) * 2020-04-28 2021-10-29 南京德朔实业有限公司 电圆锯

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GB998123A (en) † 1961-04-14 1965-07-14 Bosch Gmbh Robert Improvements in hand-applied machine tools driven by electric motors
JP2006181667A (ja) † 2004-12-27 2006-07-13 Makita Corp 電動工具

Also Published As

Publication number Publication date
DE102007017243A1 (de) 2008-10-16
RU2472607C2 (ru) 2013-01-20
WO2008125368A1 (fr) 2008-10-23
EP2146820A1 (fr) 2010-01-27
EP2146820B1 (fr) 2011-07-13
US20090280732A1 (en) 2009-11-12
RU2009141525A (ru) 2011-05-20
ATE516112T1 (de) 2011-07-15
CN101657297B (zh) 2013-03-06
US8113922B2 (en) 2012-02-14
CN101657297A (zh) 2010-02-24

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