EP0856383A2 - Outil à main motorisé avec ventilateur - Google Patents

Outil à main motorisé avec ventilateur Download PDF

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Publication number
EP0856383A2
EP0856383A2 EP97118418A EP97118418A EP0856383A2 EP 0856383 A2 EP0856383 A2 EP 0856383A2 EP 97118418 A EP97118418 A EP 97118418A EP 97118418 A EP97118418 A EP 97118418A EP 0856383 A2 EP0856383 A2 EP 0856383A2
Authority
EP
European Patent Office
Prior art keywords
fan
motor shaft
drive
motor
fan wheel
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
EP97118418A
Other languages
German (de)
English (en)
Other versions
EP0856383B1 (fr
EP0856383A3 (fr
Inventor
Rudolf Fuchs
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 EP0856383A2 publication Critical patent/EP0856383A2/fr
Publication of EP0856383A3 publication Critical patent/EP0856383A3/fr
Application granted granted Critical
Publication of EP0856383B1 publication Critical patent/EP0856383B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B25F5/008—Cooling means

Definitions

  • the invention is based on a hand machine tool the preamble of claim 1. It is already a hand machine tool known (DE-A-42 31 985), in which a fan wheel for cooling the drive motor in a rotationally fixed manner on the motor shaft is arranged. The speed of the fan wheel corresponds to this the engine speed. To achieve sufficient funding the fan wheel must pass through the fan accordingly be designed large, which requires a large amount of space.
  • the hand tool according to the invention with the features of claim 1 has the advantage that the fan in comparison can be operated to drive different speeds is.
  • the fan can be compared with one operate the engine speed at higher speed, whereby with the same size, a higher suction or blowing power or a smaller design with the same suction or blowing power is made possible.
  • a higher fan speed is, for example then advantageous if in the event of an overload at low Engine speed requires a high cooling capacity is.
  • FIG. 1 shows a partial section of a rotary hammer as an example of a hand tool according to the invention
  • FIG. 2 shows the drive part of FIG Hand tool according to Figure 1.
  • 10 denotes a hammer drill, which as Example of a hand tool according to the invention serves.
  • the hammer drill 10 has a housing 11 in which a drive motor 12 is housed. By the drive motor 12 a motor shaft 13 can be driven in rotation. On your tool side The end is the motor shaft 13 with a pinion 15 provided that in engagement with a not shown Gearbox stands, the drive torque on a Not shown drilling spindle and / or on a likewise transmits percussion not shown.
  • the Motor shaft 13 is via a roller bearing 16 opposite the housing 11 of the rotary hammer 10 rotatably mounted.
  • a fan 18 is provided for cooling the drive motor 12, which has a fan wheel 19.
  • the fan wheel 19 is on the motor shaft 13 between the drive motor 12 and the roller bearing 16 arranged and opposite this by means of a bearing 20 rotatably mounted.
  • Motor shaft 13 and fan wheel 19 are standing via a transmission shown only in principle in FIG. 1 21 in operative connection.
  • FIG 2 the drive part of the hammer drill 10 is closer shown.
  • the drive motor 12 faces the motor shaft 13 facing away from a collector 24.
  • Tool side the roller bearing 16 can be seen, via which the motor shaft 13 is rotatably supported relative to the housing 11.
  • the fan wheel is between the drive motor 12 and the roller bearing 16 19 arranged and via the bearing 20 on the motor shaft 13 rotatably mounted.
  • the transmission 21 is in the example as Belt drive trained.
  • a first round cord 21a connects the shaft 13 with an idler gear 25, which is on a housing-fixed pin 26 rotatable via a needle bearing 27 is stored.
  • a second cord 21b connects this Intermediate wheel 25 with a non-rotatably connected to the fan wheel 19 Drive wheel 28.
  • the gear 21 Speed of the fan wheel 19 compared to the speed of the motor shaft 13 increased. In this way, the suction or Blowing performance of the fan 18 compared to conventionally arranged Increase fans.
  • the transmission 21 can also be used as a gear transmission, for example, designed as a planetary gear be. Of course, other embodiments are also possible from translation gears.
  • the blower 18 can also be used as a suction fan for removed material, for example Drilling dust can be used.
  • the invention is basically with all hand machine tools, such as drills, Grinder, saws etc. applicable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Portable Power Tools In General (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Drilling And Boring (AREA)
EP97118418A 1996-12-18 1997-10-23 Outil à main motorisé avec ventilateur Expired - Lifetime EP0856383B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19652751 1996-12-18
DE19652751A DE19652751C2 (de) 1996-12-18 1996-12-18 Handwerkzeugmaschine mit einem Gebläse

Publications (3)

Publication Number Publication Date
EP0856383A2 true EP0856383A2 (fr) 1998-08-05
EP0856383A3 EP0856383A3 (fr) 1999-04-07
EP0856383B1 EP0856383B1 (fr) 2003-03-19

Family

ID=7815184

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97118418A Expired - Lifetime EP0856383B1 (fr) 1996-12-18 1997-10-23 Outil à main motorisé avec ventilateur

Country Status (2)

Country Link
EP (1) EP0856383B1 (fr)
DE (2) DE19652751C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006053794A2 (fr) * 2004-11-17 2006-05-26 Robert Bosch Gmbh Machine-outil portative
US8292001B2 (en) 2007-11-21 2012-10-23 Black & Decker Inc. Multi-mode drill with an electronic switching arrangement

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7770660B2 (en) 2007-11-21 2010-08-10 Black & Decker Inc. Mid-handle drill construction and assembly process
US7717191B2 (en) 2007-11-21 2010-05-18 Black & Decker Inc. Multi-mode hammer drill with shift lock
US7717192B2 (en) 2007-11-21 2010-05-18 Black & Decker Inc. Multi-mode drill with mode collar
US7854274B2 (en) 2007-11-21 2010-12-21 Black & Decker Inc. Multi-mode drill and transmission sub-assembly including a gear case cover supporting biasing
US7735575B2 (en) 2007-11-21 2010-06-15 Black & Decker Inc. Hammer drill with hard hammer support structure
US7762349B2 (en) 2007-11-21 2010-07-27 Black & Decker Inc. Multi-speed drill and transmission with low gear only clutch
DE102013000374A1 (de) * 2013-01-11 2014-07-17 Festool Group Gmbh & Co. Kg Hand-Werkzeugmaschine mit einem Lüfterrad

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE964638C (de) * 1955-12-02 1957-05-23 Mafell Maschinenfabrik Inh Dip Tragbare, elektromotorisch angetriebene Holzbearbeitungsmaschine
US5311089A (en) * 1992-06-19 1994-05-10 Robert Bosch Gmbh Hand machine tool

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3824234A1 (de) * 1988-07-16 1990-01-25 Bosch Gmbh Robert Handwerkzeugmaschine mit durchzugsbelueftetem antriebsmotor
DE4231985A1 (de) * 1992-09-24 1994-03-31 Bosch Gmbh Robert Bohr- und/oder Schlaghammer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE964638C (de) * 1955-12-02 1957-05-23 Mafell Maschinenfabrik Inh Dip Tragbare, elektromotorisch angetriebene Holzbearbeitungsmaschine
US5311089A (en) * 1992-06-19 1994-05-10 Robert Bosch Gmbh Hand machine tool

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006053794A2 (fr) * 2004-11-17 2006-05-26 Robert Bosch Gmbh Machine-outil portative
WO2006053794A3 (fr) * 2004-11-17 2006-07-20 Bosch Gmbh Robert Machine-outil portative
US8292001B2 (en) 2007-11-21 2012-10-23 Black & Decker Inc. Multi-mode drill with an electronic switching arrangement

Also Published As

Publication number Publication date
DE59709567D1 (de) 2003-04-24
EP0856383B1 (fr) 2003-03-19
EP0856383A3 (fr) 1999-04-07
DE19652751A1 (de) 1998-06-25
DE19652751C2 (de) 1999-08-19

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