EP0856383B1 - Hand held power tool with fan rotor - Google Patents
Hand held power tool with fan rotor Download PDFInfo
- Publication number
- EP0856383B1 EP0856383B1 EP97118418A EP97118418A EP0856383B1 EP 0856383 B1 EP0856383 B1 EP 0856383B1 EP 97118418 A EP97118418 A EP 97118418A EP 97118418 A EP97118418 A EP 97118418A EP 0856383 B1 EP0856383 B1 EP 0856383B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fan
- motor shaft
- power tool
- hand held
- held power
- 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.)
- Expired - Lifetime
Links
Images
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 the engine speed operate 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 rotary hammer, 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.
- On the 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 gear 21 is in the example as Belt drive trained.
- a first cord 21a connects the shaft 13 with an intermediate 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 rotationally fixedly 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 power of the blower 18 compared to conventionally arranged Increase fan.
- the transmission 21 can also be used as a gear transmission, for example, designed as a planetary gear his. 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.
Description
Die Erfindung geht aus von einer Handwerkzeugmaschine nach dem Oberbegriff des Anspruchs 1. Es ist schon eine Handwerkzeugmaschine bekannt (DE-A-42 31 985), bei der ein Lüfterrad zur Kühlung des Antriebsmotors drehfest auf der Motorwelle angeordnet ist. Die Drehzahl des Lüfterrads entspricht dabei der Motordrehzahl. Zur Erzielung einer ausreichenden Förderleistung durch den Lüfter muß das Lüfterrad entsprechend groß ausgelegt werden, was einen großen Bauraum erfordert.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.
Die erfindungsgemäße Handwerkzeugmaschine mit den Merkmalen des Anspruchs 1 hat den Vorteil, daß der Lüfter mit im Vergleich zum Antriebsmotor unterschiedlicher Drehzahl betreibbar ist. Insbesondere läßt sich der Lüfter mit einer gegenüber der Motordrehzahl höheren Drehzahl betreiben, wodurch bei gleicher Baugröße eine höhere Saug- bzw. Blasleistung bzw. bei gleicher Saug- bzw. Blasleistung eine kleinere Bauweise ermöglicht wird. Eine höhere Lüfterdrehzahl ist beispielsweise dann vorteilhaft, wenn im Überlastfall bei geringer Motordrehzahl eine hohe Kühlleistung erforderlich ist.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. In particular, the fan can be compared with one the engine speed operate 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.
Durch die in den abhängigen Ansprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen der erfindungsgemäßen Handwerkzeugmaschine möglich. Durch die Kopplung des Lüfterrads mit der Motorwelle über ein Übersetzungsgetriebe ist auf einfache Weise eine Drehzahlerhöhung am Lüfterrad gegenüber der Motordrehzahl möglich.Through the measures listed in the dependent claims are advantageous developments and improvements to Handheld power tool according to the invention possible. Through the Coupling of the fan wheel with the motor shaft via a transmission gear is a simple way to increase the speed possible on the fan wheel opposite the motor speed.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen Figur 1 einen Teilschnitt eines Bohrhammers als Beispiel einer erfindungsgemäßen Handwerkzeugmaschine und Figur 2 eine Darstellung des Antriebsteils der Handwerkzeugmaschine nach Figur 1.An embodiment of the invention is in the drawing shown and explained in more detail in the following description. FIG. 1 shows a partial section of a rotary hammer as an example of a hand tool according to the invention and FIG. 2 shows the drive part of FIG Hand tool according to Figure 1.
In Figur 1 ist mit 10 ein Bohrhammer bezeichnet, der als
Beispiel für eine erfindungsgemäße Handwerkzeugmaschine
dient. Der Bohrhammer 10 hat ein Gehäuse 11, in dem ein Antriebsmotor
12 untergebracht ist. Durch den Antriebsmotor 12
ist eine Motorwelle 13 drehend antreibbar. An ihrem werkzeugseitigen
Ende ist die Motorwelle 13 mit einem Ritzel 15
versehen, das im Eingriff mit einem nicht näher dargestellten
Getriebe steht, das ein Antriebsdrehmoment auf eine
nicht näher dargestellte Bohrspindel und/oder auf ein ebenfalls
nicht näher dargestelltes Schlagwerk überträgt. Die
Motorwelle 13 ist über ein Wälzlager 16 gegenüber dem Gehäuse
11 des Bohrhammers 10 drehbar gelagert. In Figure 1, 10 denotes a rotary hammer, which as
Example of a hand tool according to the invention
serves. The
Zur Kühlung des Antriebsmotors 12 ist ein Gebläse 18 vorgesehen,
das ein Lüfterrad 19 aufweist. Das Lüfterrad 19 ist
auf der Motorwelle 13 zwischen Antriebsmotor 12 und Wälzlager
16 angeordnet und gegenüber dieser mittels eines Lagers
20 drehbar gelagert. Motorwelle 13 und Lüfterrad 19 stehen
über ein in Figur 1 nur prinzipiell dargestelltes Getriebe
21 in Wirkverbindung.A
In Figur 2 ist der Antriebsteil des Bohrhammers 10 näher
dargestellt. Der Antriebsmotor 12 weist auf seiner der Motorwelle
13 abgewandten Seite einen Kollektor 24 auf. Werkzeugseitig
ist das Wälzlager 16 erkennbar, über das die Motorwelle
13 gegenüber dem Gehäuse 11 drehbar gelagert ist.
Zwischen Antriebsmotor 12 und Wälzlager 16 ist das Lüfterrad
19 angeordnet und über das Lager 20 auf der Motorwelle 13
drehbar gelagert. Das Getriebe 21 ist im Beispielfall als
Riementrieb ausgebildet. Ein erster Rundschnurriemen 21a
verbindet die Welle 13 mit einem Zwischenrad 25, das auf einem
gehäusefesten Zapfen 26 über ein Nadellager 27 drehbar
gelagert ist. Ein zweiter Rundschnurriemen 21b verbindet das
Zwischenrad 25 mit einem drehfest mit dem Lüfterrad 19 verbundenen
Antriebsrad 28. Durch das Getriebe 21 wird die
Drehzahl des Lüfterrades 19 gegenüber der Drehzahl der Motorwelle
13 erhöht. Auf diese Weise läßt sich die Saug- bzw.
Blasleistung des Gebläses 18 gegenüber herkömmlich angeordneten
Gebläsen erhöhen.In Figure 2, the drive part of the
Die Erfindung ist nicht auf das gezeigte Ausführungsbeispiel
beschränkt. Insbesondere kann das Getriebe 21 auch als Zahnradgetriebe,
beispielsweise als Planetengetriebe, ausgebildet
sein. Selbstverständlich sind auch andere Ausführungsformen
von Übersetzungsgetrieben möglich. Das Gebläse 18
kann auch als Absauggebläse für abgetragenes Material, beispielsweise
Bohrstaub, eingesetzt werden. Die Erfindung ist
grundsätzlich bei allen Handwerkzeugmaschinen, wie Bohrer,
Schleifer, Sägen etc. anwendbar.The invention is not based on the embodiment shown
limited. In particular, the
Claims (4)
- Powered hand tool comprising a drive motor (12), a motor shaft (13) driven by the drive motor (12), and a fan (18) likewise driven by the drive motor (12) and having a fan impeller (19), characterized in that the fan impeller (19) is mounted on the motor shaft (13) such as to be rotatable relative to the latter.
- Powered hand tool according to Claim 1, characterized in that the fan impeller (19) is coupled to the motor shaft (13) via a transmission (21).
- Powered hand tool according to Claim 2, characterized in that the transmission (21) is designed as a step-up transmission.
- Powered hand tool according to Claim 2 or 3, characterized in that the transmission (21) is formed by a belt drive.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19652751A DE19652751C2 (en) | 1996-12-18 | 1996-12-18 | Hand machine tool with a blower |
| DE19652751 | 1996-12-18 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0856383A2 EP0856383A2 (en) | 1998-08-05 |
| EP0856383A3 EP0856383A3 (en) | 1999-04-07 |
| EP0856383B1 true EP0856383B1 (en) | 2003-03-19 |
Family
ID=7815184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97118418A Expired - Lifetime EP0856383B1 (en) | 1996-12-18 | 1997-10-23 | Hand held power tool with fan rotor |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0856383B1 (en) |
| DE (2) | DE19652751C2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| US7770660B2 (en) | 2007-11-21 | 2010-08-10 | Black & Decker Inc. | Mid-handle drill construction and assembly process |
| US7798245B2 (en) | 2007-11-21 | 2010-09-21 | Black & Decker Inc. | Multi-mode drill with an electronic switching arrangement |
| 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 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004055268A1 (en) * | 2004-11-17 | 2006-05-18 | Robert Bosch Gmbh | Hand tool |
| DE102013000374A1 (en) * | 2013-01-11 | 2014-07-17 | Festool Group Gmbh & Co. Kg | Hand machine tool with a fan wheel |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE964638C (en) * | 1955-12-02 | 1957-05-23 | Mafell Maschinenfabrik Inh Dip | Portable, electric motor driven woodworking machine |
| DE3824234A1 (en) * | 1988-07-16 | 1990-01-25 | Bosch Gmbh Robert | HAND MACHINE TOOL WITH DRAFT VENTILATED DRIVE MOTOR |
| DE4220078A1 (en) * | 1992-06-19 | 1993-12-23 | Bosch Gmbh Robert | Hand tool |
| DE4231985A1 (en) * | 1992-09-24 | 1994-03-31 | Bosch Gmbh Robert | Hammer and / or percussion hammer |
-
1996
- 1996-12-18 DE DE19652751A patent/DE19652751C2/en not_active Expired - Fee Related
-
1997
- 1997-10-23 DE DE59709567T patent/DE59709567D1/en not_active Expired - Lifetime
- 1997-10-23 EP EP97118418A patent/EP0856383B1/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| US7770660B2 (en) | 2007-11-21 | 2010-08-10 | Black & Decker Inc. | Mid-handle drill construction and assembly process |
| US7798245B2 (en) | 2007-11-21 | 2010-09-21 | Black & Decker Inc. | Multi-mode drill with an electronic switching arrangement |
| 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 |
| US7987920B2 (en) | 2007-11-21 | 2011-08-02 | Black & Decker Inc. | Multi-mode drill with mode collar |
| US8109343B2 (en) | 2007-11-21 | 2012-02-07 | Black & Decker Inc. | Multi-mode drill with mode collar |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0856383A2 (en) | 1998-08-05 |
| DE19652751A1 (en) | 1998-06-25 |
| DE59709567D1 (en) | 2003-04-24 |
| EP0856383A3 (en) | 1999-04-07 |
| DE19652751C2 (en) | 1999-08-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE102004020177A1 (en) | Hand tool with a rotating and / or beating drive | |
| DE10117121A1 (en) | Hand tool | |
| EP2913159B1 (en) | Hand-held electric tool having a spindle-locking device | |
| EP0856383B1 (en) | Hand held power tool with fan rotor | |
| WO2008037530A1 (en) | Hand-held machine tool | |
| DE102010063200A1 (en) | Hand tool with a mechanical percussion | |
| DE102005062887A1 (en) | Hand-held machine tool e.g. boring machine, for driving e.g. boring tool, has transmission unit designed as single unit with tool retaining unit, and channel formed as single piece with turbine unit supply channel | |
| EP2242613A1 (en) | Motor-driven machine tool | |
| EP1320447B1 (en) | Machine tool with a chamber for lubricating agent and a pressure equalisation device for said chamber | |
| DE69911864T2 (en) | Hand tool with electric drive, in particular jigsaw | |
| WO2009083307A1 (en) | Hand power tool having a gear arrangement comprising at least one pivotably supported intermediate shaft | |
| DE10045619C1 (en) | Machine tool with a room with lubricant and a pressure compensation device of the room | |
| DE102007020368A1 (en) | Hand-held implement | |
| EP2406035B1 (en) | Hand tool | |
| EP2097224A1 (en) | Hand-held power tool | |
| DE10258863A1 (en) | Power tool, in particular angle grinder, comprising input arrangement designed as bevel gear and output arrangement designed as planetary gear | |
| WO2012084316A1 (en) | Electric hand tool | |
| DE3931736C2 (en) | ||
| DE102009054929B4 (en) | Hand tool device | |
| DE102004012022A1 (en) | Gear motor for driving diamond saw machine, has high speed-planetary drive coaxially coupled to input shaft of asynchronous-high frequency motor, so that radial load is not developed at end of input shaft | |
| EP0730931B1 (en) | Mechanised tool for grinding, rasping, filing or polishing | |
| DE202010002151U1 (en) | Gear for devices with rotary tools | |
| DE10038903A1 (en) | Brush cutter powered by an electric motor | |
| DE102006031745A1 (en) | Hand tool machine e.g. boring and chipping hammer, has drive mediums with rotational axis aligned diagonal to machining axis, where rotational axis exhibits component extending in direction of machining axis | |
| DE202004011614U1 (en) | power tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): DE FR GB IT |
|
| PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
| AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
| AX | Request for extension of the european patent |
Free format text: AL;LT;LV;RO;SI |
|
| 17P | Request for examination filed |
Effective date: 19991007 |
|
| AKX | Designation fees paid |
Free format text: DE FR GB IT |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Designated state(s): DE FR GB IT |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
| REF | Corresponds to: |
Ref document number: 59709567 Country of ref document: DE Date of ref document: 20030424 Kind code of ref document: P |
|
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) | ||
| ET | Fr: translation filed | ||
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed |
Effective date: 20031222 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20051023 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20101109 Year of fee payment: 14 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20101021 Year of fee payment: 14 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20101217 Year of fee payment: 14 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20111023 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20120629 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20120501 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 59709567 Country of ref document: DE Effective date: 20120501 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20111023 Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20111102 |