EP1968772B1 - Portable electric power tool - Google Patents

Portable electric power tool Download PDF

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Publication number
EP1968772B1
EP1968772B1 EP06830042A EP06830042A EP1968772B1 EP 1968772 B1 EP1968772 B1 EP 1968772B1 EP 06830042 A EP06830042 A EP 06830042A EP 06830042 A EP06830042 A EP 06830042A EP 1968772 B1 EP1968772 B1 EP 1968772B1
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EP
European Patent Office
Prior art keywords
housing
cooling air
electric power
power tool
drive motor
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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.)
Not-in-force
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EP06830042A
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German (de)
French (fr)
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EP1968772A1 (en
Inventor
Gabor Papp
Jozsef Dudas
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Robert Bosch GmbH
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Robert Bosch GmbH
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Publication of EP1968772A1 publication Critical patent/EP1968772A1/en
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    • 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
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27C—PLANING, DRILLING, MILLING, TURNING OR UNIVERSAL MACHINES FOR WOOD OR SIMILAR MATERIAL
    • B27C1/00—Machines for producing flat surfaces, e.g. by rotary cutters; Equipment therefor
    • B27C1/10—Hand planes equipped with power-driven cutter blocks

Definitions

  • the invention relates to a hand-held power tool according to the preamble of claim 1.
  • a manual planing machine with a housing, a motor and a planing shaft with it can be gripped planer knives known, wherein the rotational movement of the drive shaft of the motor is transmitted via a suitable transmission member on the planer shaft.
  • This transmission member is, for example, a transmission belt which lies within the housing of the planing machine, wherein the area is covered in the housing with the transmission belt of a detachable housing cover.
  • ventilation slots are introduced into the housing of the planing machine, through which a heat exchange is made possible.
  • a fan can be used, which is driven by the drive shaft of the motor and sucks a cooling air flow from the environment via the ventilation slots and leads over the engine.
  • a hand planer which comprises an electric motor driven fan which sucks a cooling air flow axially through the machine, wherein a portion of the cooling air flow is conveyed through slots to the outside.
  • a smaller portion of the cooling air flow may pass through a window into a space in which a transmission belt is disposed between an electric drive motor and a planing head.
  • the window which is arranged in a side wall of the housing, is covered by a cover.
  • the EP 1674 213 A1 shows an electric drill with an electric drive motor, the drive shaft is coupled via a gear to the output shaft for receiving the drill.
  • cooling air is supplied via inflow openings in the upper and side housing area.
  • a first cooling air flow is introduced via an upper inlet opening and led vertically downwards to the drive motor at the edge of the transmission where it is combined with a second cooling air flow, which is conducted via a lateral inflow opening into the housing interior.
  • the combined cooling air flow is guided via the drive motor and then discharged via an outflow opening from the housing.
  • the invention has for its object to improve the air cooling in hand-held power tools. Expediently, in addition to the drive motor and gear parts and transmission members, via which the rotational movement of the drive shaft of the electric motor is transmitted to the cutting tool to be cooled with little design effort.
  • the hand-held power tool according to the invention which has an electric drive motor in a housing whose drive shaft is coupled via a transmission member with a rotating cutting tool, has first inflow openings in the housing, is sucked by the fan from the cooling air and guided over the drive motor. Furthermore, additional inflow openings are provided in the housing on the side adjacent to the transfer member, via which cooling air from the environment can also flow into the housing interior for cooling the transfer member or the gear parts located therein. This region of the housing with the transmission parts or the transmission element arranged therein communicates via a connecting channel, which is formed in the housing, with the flow path between the first inlet openings and the fan wheel.
  • this negative pressure on the connection channel also affects the housing portion with the therein arranged transmission parts or the transmission member, which can form a cooling air flow in this area, which is introduced via the additional inlet openings.
  • the transmission member or the gear parts are advantageously in the flow path between the additional inlet openings and the mouth opening of the connecting channel, so that the incoming cooling air along the transmission parts or the transmission member along sweeps and provides for cooling.
  • this cooling air flow is conducted via the connecting channel into the flow path between the first inflow openings and the fan wheel and admixed there with the first cooling air flow.
  • the cooling air streams are advantageously brought together upstream of the fan wheel, whereby a particularly effective cooling of the drive motor by the now enlarged cooling air flow is possible.
  • the height of the cooling air mass flows which are guided into the housing of the power tool via both the first and the additional inflow openings, is influenced by the power of the fan wheel and by the geometry of the flow channels and the inflow openings.
  • the first flow openings and the additional flow openings for the approach of the cooling air flow are arranged in the housing area receiving the gear unit on opposite sides of the housing.
  • the communication passage extends between the first flow space located between the first flow ports and the fan and the gear unit receiving area on the opposite side of the housing substantially transverse to the longitudinal axis of the power tool.
  • the connecting channel between the housing portion with the transmission member and the flow path between the first inflow and the fan is seen in the longitudinal direction of the power tool advantageously between the drive shaft of the electric motor and the shaft of the cutting tool. In principle, however, are also positioning of the connecting channel in the axial direction before or behind the area between the drive shaft of the electric motor and the shaft of the cutting tool.
  • the transmission unit facing opening of the connecting channel is appropriate at the level of and immediately behind the transmission member or the gear unit and is also opposite the additional inlet openings, so that the sucked cooling air is forced to flow along the transmission member or to be cooled transmission unit along.
  • the combined cooling air flow opens downstream of the fan wheel in an air-chip channel, be sucked off the chips removed by the cutting tool and transported to the outside.
  • the power tool is an example of a hand planer, wherein the transmission member is a belt between the drive shaft of the electric motor and the planer shaft of the planer blade.
  • the transmission member is a belt between the drive shaft of the electric motor and the planer shaft of the planer blade.
  • it is also a use in other hand tool machines into consideration, in which a motion transmission of the electromotive rotation is performed on a cutting tool using a belt or a gear unit.
  • the housing 2 has an upper main handle 3 and in the front area an additional handle 4, on the same time by turning about its vertical axis, the cutting depth of the hand planer is adjustable.
  • a lateral housing part 5 is a plurality of first inflow openings 6, which are introduced in the form of ventilation slots in the advantageously made of plastic housing 2 and sucked via a first cooling air flow from the environment and according to arrow 7 in the housing interior for cooling the electric motor of Hand planer is passed.
  • This first cooling air flow is sucked in laterally and extends transversely to the longitudinal axis of the hand planer.
  • a second cooling air flow is, as in Fig.
  • the cooling air flow indicated by the arrows 8 comprises the first and the second cooling air flow.
  • Fig. 2 can be seen on the relative to the longitudinal axis 11 of the hand planer 1 the housing part 5 opposite Side a removable gear cover 10 disposed on the housing 2, wherein the lateral housing part 5 on one side of the housing and the gear cover 10 on the opposite side of the housing are approximately symmetrical to the longitudinal axis 11.
  • gear units or transmission elements in detail in the 3 and 4 are shown and via which the drive movement of the drive shaft 14 of the motor of the hand planer is transmitted to the rotating cutting tool.
  • additional inflow openings 12 are introduced into the gear cover 10, via which the second additional cooling air flow 9 can flow into the region 16 in the housing.
  • the second cooling air stream 9, which flows into the housing interior covered by the gear cover 10, passes along the gear units or transfer elements and cools them.
  • the second cooling air flow initially proceeds approximately in the longitudinal direction.
  • covered by the gear cover 10 area of the second cooling air flow 9 is deflected into a transverse to the longitudinal axis, formed inside the housing connecting channel 15 and directed to the opposite side of the housing, where the union with the first cooling air flow 7 takes place. Both air streams are then passed again in the transverse direction, but now in the direction of the first housing part 5 to the gear cover 10.
  • Both the first cooling air flow 7 and the second cooling air flow 9 are generated by a fan wheel 13, which is non-rotatably coupled to the drive shaft 14 of the drive motor.
  • the fan 13 is located inside the housing on the however, the area 16 adjacent to the area covered by the gear cover 10 is separated from the area 16 by an inner housing wall.
  • the fan 13 generates a negative pressure, whereby the two cooling air streams 7 and 9 are sucked in via the inlet openings 6 and 12, respectively.
  • the cooling air flow is deflected in the longitudinal direction of the machine to the front part of the housing (arrow 17) and further derived according to a first variant via outflow openings 19 in the front part of the gear cover 10 according to arrow 18 in the environment or, according to a second Variant, deflected by 180 ° according to arrow 20 in an air-chip channel 21, transported over the removed from the cutting tool of the hand planer chips to the rear portion of the hand planer and derived from the housing 2.
  • the air-chip channel 21 is located inside the main handle 3.
  • the connecting channel 15 is located between the area 16, which is covered by the gear cover 10, and the opposite housing part 5 in the longitudinal direction of the hand planer 1 in front of the projecting into the area 16 gear units 23, so that the die.zuslegilichen via 12th zoom guided, second cooling air flow 9 must stroke immediately past these gear units 23 and this cools. Subsequently, the additional cooling air flow 9 is passed in the transverse direction through the connecting channel 15 and deflected in the opposite housing part 5 and combined with the first cooling air flow.
  • the gear units projecting into the region 16 are the end face of the drive shaft 14 around which a transmission belt 24 (FIG. Fig. 4 ) is stretched to transmit the motion to the shaft of the cutting blade.
  • Fig. 4 represents the hand planer 1 in a perspective view with the gear cover removed. It can be seen the transmission belt 24 between the drive shaft 14 and with respect to the longitudinal direction further forward wave 25 de cutting tool. Entered are also the second cooling air flow 9, which flows along both the gear units 23 and the transmission belt 24 and is then passed through a mouth opening 25 of the connecting channel 15 through this to the opposite side of the machine.
  • Fig. 4 also a housing section 26, which is separated from the region 16, through which the second cooling air flow 9 flows, and has a flow channel for the discharge of the combined cooling air streams downstream of the fan wheel.
  • the combined cooling air flow 17 can be deflected according to arrow 20 in the air-chip channel for discharging the chips, or, alternatively, be derived directly from the housing.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Milling, Drilling, And Turning Of Wood (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

A portable electric power tool comprising a housing (2) and an electric drive motor (22), the drive shaft (14) of which is coupled to a rotating cutting tool via a transmission member (24), has a fan impeller (13) which is driven by the drive shaft and draws in cooling air via first inflow openings (6) in the housing, which cooling air is to be directed via the drive motor and is to be drawn off from the housing via outflow openings (19). Additional inflow openings (12) for cooling air are arranged in the housing on the side adjacent to the transmission member, wherein the region (16) within the housing in which the transmission member is arranged is connected via a connecting passage (15) to the flow path between the first inflow openings and the fan impeller.

Description

Stand der TechnikState of the art

Die Erfindung bezieht sich auf ein handgeführtes Elektrowerkzeug nach dem Oberbegriff des Anspruches 1.The invention relates to a hand-held power tool according to the preamble of claim 1.

Aus der DE 102 25 622 A1 ist eine Handhobelmaschine mit einem Gehäuse, einem Motor und einer Hobelwelle mit daran anspannbaren Hobelmesser bekannt, wobei die Drehbewegung der Antriebswelle des Motors über ein geeignetes Übertragungsglied auf die Hobelwelle übertragen wird. Dieses Übertragungsglied ist beispielsweise ein Übertragungsriemen, der innerhalb des Gehäuses der Hobelmaschine liegt, wobei der Bereich im Gehäuse mit dem Übertragungsriemen von einem lösbaren Gehäusedeckel abgedeckt ist.From the DE 102 25 622 A1 is a manual planing machine with a housing, a motor and a planing shaft with it can be gripped planer knives known, wherein the rotational movement of the drive shaft of the motor is transmitted via a suitable transmission member on the planer shaft. This transmission member is, for example, a transmission belt which lies within the housing of the planing machine, wherein the area is covered in the housing with the transmission belt of a detachable housing cover.

Um sicherzustellen, dass die Abwärme des elektrischen Antriebsmotors abgeleitet wird und nicht zu einer Schädigung der Bauteile führen kann, sind in das Gehäuse der Hobelmaschine Lüftungsschlitze eingebracht, über die ein Wärmeaustausch ermöglicht wird. Zur Verbesserung der Wärmeableitung kann grundsätzlich ein Lüfterrad eingesetzt werden, welches von der Antriebswelle des Motors angetrieben wird und über die Lüftungsschlitze einen Kühlluftstrom aus der Umgebung ansaugt und über den Motor führt.To ensure that the waste heat of the electric drive motor is derived and can not lead to damage to the components, ventilation slots are introduced into the housing of the planing machine, through which a heat exchange is made possible. To improve the heat dissipation principle, a fan can be used, which is driven by the drive shaft of the motor and sucks a cooling air flow from the environment via the ventilation slots and leads over the engine.

Aus der US 4 601 104 ist eine Handhobelmaschine bekannt, die einen elektromotorisch betriebenen Lüfter aufweist, welcher einen Kühlluftstrom axial durch die Maschine saugt, wobei ein Teil des Kühlluftstromes durch Schlitze ins Freie befördert wird. Ein kleinerer Teil des Kühlluftstroms kann durch ein Fenster in einen Raum gelangen, in dem ein Übertragungsriemen zwischen einem elektrischen Antriebsmotor und einem Hobelkopf angeordnet ist. Das Fenster, welches in einer Seitenwand des Gehäuses angeordnet ist, ist von einer Abdeckhaube überdeckt.From the US 4 601 104 a hand planer is known which comprises an electric motor driven fan which sucks a cooling air flow axially through the machine, wherein a portion of the cooling air flow is conveyed through slots to the outside. A smaller portion of the cooling air flow may pass through a window into a space in which a transmission belt is disposed between an electric drive motor and a planing head. The window, which is arranged in a side wall of the housing, is covered by a cover.

Der in das Gehäuse eingesaugte Kühlluftstrom verzweigt innerhalb des Gehäuses in zwei Teilströme. Dies hat einen etwa Y-förmigen Strömungsverlauf mit dem Einströmen der Kühlluft über eine gemeinsame Gehäuseöffnung und dem Aufspalten in zwei Teilluftströme zur Folge.The sucked into the housing cooling air flow branches within the housing in two sub-streams. This has an approximately Y-shaped flow pattern with the inflow of cooling air through a common housing opening and the splitting into two partial air streams result.

Die EP 1674 213 A1 zeigt eine Elektro-Bohrmaschine mit einem elektrischen Antriebsmotor, dessen Antriebswelle über ein Getriebe mit der Abtriebswelle zur Aufnahme des Bohrers gekoppelt ist. Zur Kühlung des Getriebes und des Antriebsmotors wird über Einströmöffnungen im oberen und seitlichen Gehäusebereich Kühlluft zugeführt. Ein erster Kühlluftstrom wird über eine obere Einströmöffnung eingeleitet und am Rand des Getriebes senkrecht nach unten bis zum Antriebsmotor geführt und dort mit einem zweiten Kühlluftstrom vereinigt, der über eine seitliche Einströmöffnung in das Gehäuseinnere geleitet wird. Der vereinigte Kühlluftstrom wird über den Antriebsmotor geführt und anschließend über eine Abströmöffnung aus dem Gehäuse abgeleitet.The EP 1674 213 A1 shows an electric drill with an electric drive motor, the drive shaft is coupled via a gear to the output shaft for receiving the drill. For cooling the transmission and the drive motor cooling air is supplied via inflow openings in the upper and side housing area. A first cooling air flow is introduced via an upper inlet opening and led vertically downwards to the drive motor at the edge of the transmission where it is combined with a second cooling air flow, which is conducted via a lateral inflow opening into the housing interior. The combined cooling air flow is guided via the drive motor and then discharged via an outflow opening from the housing.

Aufgabe und Vorteile der ErfindungPurpose and advantages of the invention

Der Erfindung liegt der Aufgabe zugrunde, die Luftkühlung in handgeführten Elektrowerkzeugen zu verbessern. Zweckmäßig sollen neben dem Antriebsmotor auch Getriebeteile und Übertragungsglieder, über die die Drehbewegung der Antriebswelle des Elektromotors auf das Schneidwerkzeug übertragen wird, mit geringem konstruktiven Aufwand gekühlt werden.The invention has for its object to improve the air cooling in hand-held power tools. Expediently, in addition to the drive motor and gear parts and transmission members, via which the rotational movement of the drive shaft of the electric motor is transmitted to the cutting tool to be cooled with little design effort.

Diese Aufgabe wird erfindungsgemäß mit den Merkmalen des Anspruches 1 gelöst. Die Unteransprüche geben zweckmäßige Weiterbildungen an.This object is achieved with the features of claim 1. The dependent claims indicate expedient developments.

Das erfindungsgemäße, handgeführte Elektrowerkzeug, welches in einem Gehäuse einen elektrischen Antriebsmotor aufweist, dessen Antriebswelle über ein Übertragungsglied mit einem rotierenden Schneidwerkzeug gekoppelt ist, weist erste Einströmöffnungen im Gehäuse auf, über die von dem Lüfterrad Kühlluft angesaugt und über den Antriebsmotor geführt wird. Des Weiteren sind zusätzliche Einströmöffnungen im Gehäuse auf der dem Übertragungsglied benachbarten Seite vorgesehen, über die ebenfalls Kühlluft aus der Umgebung in das Gehäuseinnere zur Kühlung des Übertragungsgliedes bzw. der darin befindlichen Getriebeteile einströmen kann. Dieser Bereich des Gehäuses mit den darin angeordneten Getriebeteile bzw. dem Übertragungsglied kommuniziert über einen Verbindungskanal, der im Gehäuse ausgebildet ist, mit dem Strömungsweg zwischen den ersten Einströmöffnungen und dem Lüfterrad. Da das Lüfterrad im Strömungsabschnitt zwischen den ersten Einströmöffnungen und Lüfterradschaufeln einen Unterdruck zur Heranführung der Kühlluft erzeugt, wirkt sich dieser Unterdruck über den Verbindungskanal auch auf den Gehäusebereich mit den darin angeordneten Getriebeteilen bzw. dem Übertragungsglied aus, wodurch sich auch in diesem Bereich ein Kühlluftstrom ausbilden kann, der über die zusätzlichen Einströmöffnungen herangeführt wird. Das Übertragungsglied bzw. die Getriebeteile liegen vorteilhaft im Strömungsweg zwischen den zusätzlichen Einströmöffnungen und der Mündungsöffnung des Verbindungskanals, so dass die einströmende Kühlluft an den Getriebeteilen bzw. dem Übertragungsglied entlang streicht und für eine Kühlung sorgt. Im weiteren Strömungsverlauf wird dieser Kühlluftstrom über den Verbindungskanal in den Strömungsweg zwischen den ersten Einströmöffnungen und dem Lüfterrad geleitet und dem dort herangeführten, ersten Kühlluftstrom beigemischt. Die Kühlluftströme werden vorteilhaft stromauf des Lüfterrades zusammengeführt, wodurch auch eine besonders wirksame Kühlung des Antriebsmotors durch den nunmehr vergrößerten Kühlluftstrom möglich ist.The hand-held power tool according to the invention, which has an electric drive motor in a housing whose drive shaft is coupled via a transmission member with a rotating cutting tool, has first inflow openings in the housing, is sucked by the fan from the cooling air and guided over the drive motor. Furthermore, additional inflow openings are provided in the housing on the side adjacent to the transfer member, via which cooling air from the environment can also flow into the housing interior for cooling the transfer member or the gear parts located therein. This region of the housing with the transmission parts or the transmission element arranged therein communicates via a connecting channel, which is formed in the housing, with the flow path between the first inlet openings and the fan wheel. Since the fan in the flow section between the first inflow and fan blades generates a negative pressure for the introduction of the cooling air, this negative pressure on the connection channel also affects the housing portion with the therein arranged transmission parts or the transmission member, which can form a cooling air flow in this area, which is introduced via the additional inlet openings. The transmission member or the gear parts are advantageously in the flow path between the additional inlet openings and the mouth opening of the connecting channel, so that the incoming cooling air along the transmission parts or the transmission member along sweeps and provides for cooling. In the further course of the flow, this cooling air flow is conducted via the connecting channel into the flow path between the first inflow openings and the fan wheel and admixed there with the first cooling air flow. The cooling air streams are advantageously brought together upstream of the fan wheel, whereby a particularly effective cooling of the drive motor by the now enlarged cooling air flow is possible.

Auf diese Weise kann mit nur einem Lüfterrad sowohl der elektrische Antriebsmotor als auch die Getriebeeinheit gekühlt werden. Die Kühlung der Getriebeteile bzw. des Übertragungsgliedes bewirkt eine höhere Standzeit des Geräts. Ein weiterer Vorteil liegt darin, dass im Falle eines Übertragungsriemens als Übertragungsglied zwischen der Antriebswelle und der Welle des Schneidwerkzeuges eine kürzere Riemenlänge verwendet werden kann, da im Vergleich zu Ausführungen aus dem Stand der Technik eine effizientere Kühlung dieses Übertragungsriemens auch bei der kürzeren Länge erreicht wird.In this way, with only one fan both the electric drive motor and the transmission unit can be cooled. The cooling of the gear parts or the transmission member causes a longer life of the device. Another advantage is that, in the case of a transmission belt, a shorter belt length can be used as a transmission member between the drive shaft and the shaft of the cutting tool, as compared to prior art designs, more efficient cooling of this transmission belt is achieved even at the shorter length ,

Die Höhe der Kühlluft-Massenströme, die sowohl über die ersten als auch über die zusätzlichen Einströmöffnungen in das Gehäuse des Elektrowerkzeugs geführt werden, wird zum einen über die Leistung des Lüfterrades und zum anderen über die Geometrie der Strömungskanäle und der Einströmöffnungen beeinflusst.The height of the cooling air mass flows, which are guided into the housing of the power tool via both the first and the additional inflow openings, is influenced by the power of the fan wheel and by the geometry of the flow channels and the inflow openings.

Gemäß einer vorteilhaften Weiterbildung ist vorgesehen, dass die ersten Strömungsöffnungen und die zusätzlichen Strömungsöffnungen für die Heranführung des Kühlluftstromes in den die Getriebeeinheit aufnehmenden Gehäusebereich auf gegenüberliegenden Seiten des Gehäuses angeordnet sind. In diesem Fall verläuft der Verbindungskanal zwischen dem ersten Strömungsraum, der sich zwischen den ersten Strömungsöffnungen und dem Lüfterrad befindet, und dem die Getriebeeinheit aufnehmenden Bereich auf der gegenüberliegenden Seite des Gehäuses im Wesentlichen quer zur Längsachse des Elektrowerkzeugs. Trotz der Anordnung auf unterschiedlichen Gehäuseseiten ist eine effektive Kühlung der Wärme entwickelnden Bauteile mit nur einem Lüfterrad möglich.According to an advantageous development, it is provided that the first flow openings and the additional flow openings for the approach of the cooling air flow are arranged in the housing area receiving the gear unit on opposite sides of the housing. In this case, the communication passage extends between the first flow space located between the first flow ports and the fan and the gear unit receiving area on the opposite side of the housing substantially transverse to the longitudinal axis of the power tool. Despite the arrangement on different sides of the housing effective cooling of the heat-generating components with only one fan is possible.

Der Verbindungskanal zwischen dem Gehäusebereich mit dem Übertragungsglied und dem Strömungsweg zwischen den ersten Einströmöffnungen und dem Lüfterrad liegt in Längsrichtung des Elektrowerkzeugs gesehen vorteilhaft zwischen der Antriebswelle des Elektromotors und der Welle des Schneidwerkzeuges. Grundsätzlich sind aber auch Positionierungen des Verbindungskanals in Achsrichtung gesehen vor oder hinter dem Bereich zwischen der Antriebswelle des Elektromotors und der Welle des Schneidwerkzeugs. Um eine wirksame Kühlung des Übertragungsgliedes bzw. der Getriebeeinheit sicherzustellen, befindet sich die der Getriebeeinheit zugewandte Öffnung des Verbindungskanals zweckmäßig in Höhe des sowie unmittelbar hinter dem Übertragungsglied bzw. der Getriebeeinheit und liegt außerdem den zusätzlichen Einströmöffnungen gegenüber, so dass die angesaugte Kühlluft gezwungen ist, an dem Übertragungsglied bzw. der zu kühlenden Getriebeeinheit entlang zu strömen.The connecting channel between the housing portion with the transmission member and the flow path between the first inflow and the fan is seen in the longitudinal direction of the power tool advantageously between the drive shaft of the electric motor and the shaft of the cutting tool. In principle, however, are also positioning of the connecting channel in the axial direction before or behind the area between the drive shaft of the electric motor and the shaft of the cutting tool. In order to ensure effective cooling of the transmission member or the gear unit, the transmission unit facing opening of the connecting channel is appropriate at the level of and immediately behind the transmission member or the gear unit and is also opposite the additional inlet openings, so that the sucked cooling air is forced to flow along the transmission member or to be cooled transmission unit along.

Gemäß einer weiteren vorteilhaften Ausführung mündet der vereinigte Kühlluftstrom stromab des Lüfterrades in einen Luft-Span-Kanal, über den von dem Schneidwerkzeug abgetragene Späne abgesaugt und nach außen transportiert werden. Gemäß einer alternativen Ausführung ist es aber auch möglich, den Kühlluftstrom stromab des Lüfterrades unmittelbar über Abströmöffnungen aus dem Gehäuse abzuleiten.According to a further advantageous embodiment, the combined cooling air flow opens downstream of the fan wheel in an air-chip channel, be sucked off the chips removed by the cutting tool and transported to the outside. According to an alternative embodiment, it is also possible to derive the cooling air flow downstream of the fan wheel directly via outflow openings from the housing.

Bei dem Elektrowerkzeug handelt es sich beispielhaft um eine Handhobelmaschine, wobei das Übertragungsglied ein Riemen zwischen der Antriebswelle des Elektromotors und der Hobelwelle des Hobelmessers ist. Es kommt aber auch ein Einsatz in sonstigen Handwerkzeugmaschinen in Betracht, in denen eine Bewegungsübertragung der elektromotorischen Rotation auf ein Schneidwerkzeug mithilfe eines Riemens oder einer Getriebeeinheit durchgeführt wird.The power tool is an example of a hand planer, wherein the transmission member is a belt between the drive shaft of the electric motor and the planer shaft of the planer blade. However, it is also a use in other hand tool machines into consideration, in which a motion transmission of the electromotive rotation is performed on a cutting tool using a belt or a gear unit.

Zeichnungendrawings

Weitere Vorteile und zweckmäßige Ausführungen sind den weiteren Ansprüchen, der Figurenbeschreibung und den Zeichnungen zu entnehmen. Es zeigen:

Fig. 1
eine perspektivische Ansicht einer Handhobelmaschine mit eingezeichneten Luftpfeilen, die die Strömungsrichtung der Kühlluftströme im Gehäuse der Maschine kennzeichnen,
Fig. 2
eine Draufsicht auf die Handhobelmaschine mit eingetragenen Kühlluftströmen,
Fig. 3
einen Schnitt durch die Handhobelmaschine mit dargestelltem elektrischem Antriebsmotor und vom Antriebsmotor betätigten Lüfterrad, das einen ersten und einen zweiten Kühlluftstrom erzeugt,
Fig. 4
eine weitere perspektivische Darstellung der Handhobelmaschine, dargestellt ohne Getriebedeckel mit einer Ansicht des Übertragungsriemens zwischen Antriebswelle des Elektromotors und Hobelwelle.
Further advantages and expedient embodiments can be taken from the further claims, the description of the figures and the drawings. Show it:
Fig. 1
a perspective view of a hand planer with drawn air arrows that mark the flow direction of the cooling air streams in the housing of the machine,
Fig. 2
a plan view of the hand planer with registered cooling air streams,
Fig. 3
a section through the hand planer with illustrated electric drive motor and operated by the drive motor fan wheel, which generates a first and a second cooling air flow,
Fig. 4
a further perspective view of the hand planer, shown without gear cover with a view of the transmission belt between the drive shaft of the electric motor and planer shaft.

Ausführungsbeispielembodiment

In den Figuren sind gleiche Bauteile mit gleichen Bezugszeichen versehen.In the figures, the same components are provided with the same reference numerals.

Bei dem in den Figuren dargestellten, handgeführten Elektrowerkzeug handelt es sich um eine Handhobelmaschine 1, die an einem Gehäuse 2 einen oberen Haupthandgriff 3 und im vorderen Bereich einen Zusatzhandgriff 4 aufweist, über den durch Drehen um seine Hochachse zugleich die Spantiefe der Handhobelmaschine einstellbar ist. In einem seitlichen Gehäuseteil 5 befindet sich eine Mehrzahl erster Einströmöffnungen 6, die in Form von Lüftungsschlitzen in das vorteilhaft aus Kunststoff bestehende Gehäuse 2 eingebracht sind und über die ein erster Kühlluftstrom aus der Umgebung angesaugt und gemäß Pfeil 7 in das Gehäuseinnere zur Kühlung des Elektromotors der Handhobelmaschine geleitet wird. Dieser erste Kühlluftstrom wird seitlich angesaugt und verläuft quer zur Längsachse der Handhobelmaschine. Ein zweiter Kühlluftstrom wird, wie in Fig. 1 mit Pfeil 9 angedeutet, im Gehäuse 2 der Handhobelmaschine 1 ebenfalls in Querrichtung, jedoch entgegen der Hauptströmrichtung des ersten Kühlluftstromes geführt und im Inneren des vorderen Gehäuseteiles 5 umgelenkt und mit dem ersten Kühlluftstrom vereinigt. Der mit den Pfeilen 8 gekennzeichnete Kühlluftstrom umfasst den ersten und den zweiten Kühlluftstrom.In the hand-held power tool shown in the figures, it is a hand planer 1, the housing 2 has an upper main handle 3 and in the front area an additional handle 4, on the same time by turning about its vertical axis, the cutting depth of the hand planer is adjustable. In a lateral housing part 5 is a plurality of first inflow openings 6, which are introduced in the form of ventilation slots in the advantageously made of plastic housing 2 and sucked via a first cooling air flow from the environment and according to arrow 7 in the housing interior for cooling the electric motor of Hand planer is passed. This first cooling air flow is sucked in laterally and extends transversely to the longitudinal axis of the hand planer. A second cooling air flow is, as in Fig. 1 indicated by arrow 9, in the housing 2 of the hand planer 1 also in the transverse direction, but guided against the main flow direction of the first cooling air flow and deflected in the interior of the front housing part 5 and combined with the first cooling air flow. The cooling air flow indicated by the arrows 8 comprises the first and the second cooling air flow.

Wie Fig. 2 zu entnehmen, ist auf der bezogen auf die Längsachse 11 der Handhobelmaschine 1 dem Gehäuseteil 5 gegenüberliegenden Seite ein abnehmbarer Getriebedeckel 10 am Gehäuse 2 angeordnet, wobei das seitliche Gehäuseteil 5 auf der einen Seite des Gehäuses und der Getriebedeckel 10 auf der gegenüberliegenden Seite des Gehäuses näherungsweise symmetrisch zur Längsachse 11 liegen. In dem von dem Getriebedeckel 10 eingeschlossenen Bereich 16 im Gehäuseinneren befinden sich Getriebeeinheiten bzw. Übertragungsglieder, die im Einzelnen in den Fig. 3 und 4 dargestellt sind und über die die Antriebsbewegung der Antriebswelle 14 des Motors der Handhobelmaschine auf das rotierende Schneidwerkzeug übertragen wird.As Fig. 2 can be seen on the relative to the longitudinal axis 11 of the hand planer 1 the housing part 5 opposite Side a removable gear cover 10 disposed on the housing 2, wherein the lateral housing part 5 on one side of the housing and the gear cover 10 on the opposite side of the housing are approximately symmetrical to the longitudinal axis 11. In the area enclosed by the gear cover 10 area 16 inside the housing are gear units or transmission elements, in detail in the 3 and 4 are shown and via which the drive movement of the drive shaft 14 of the motor of the hand planer is transmitted to the rotating cutting tool.

In einem bezogen auf die Längsrichtung der Handhobelmaschine hinteren Teil sind zusätzliche Einströmöffnungen 12 in den Getriebedeckel 10 eingebracht, über die der zweite, zusätzliche Kühlluftstrom 9 in den Bereich 16 im Gehäuse einströmen kann. Der in das vom Getriebedeckel 10 abgedeckte Gehäuseinnere einströmende zweite Kühlluftstrom 9 streicht an den Getriebeeinheiten bzw. Übertragungsgliedern entlang und kühlt diese. In diesem ersten Abschnitt verläuft der zweite Kühlluftstrom zunächst näherungsweise in Längsrichtung. Im vorderen, von dem Getriebedeckel 10 überdeckten Bereich wird der zweite Kühlluftstrom 9 in einen quer zur Längsachse verlaufenden, im Gehäuseinneren ausgebildeten Verbindungskanal 15 umgelenkt und zur gegenüberliegenden Seite des Gehäuses geleitet, wo die Vereinigung mit dem ersten Kühlluftstrom 7 stattfindet. Beide Luftströme werden anschließend wieder in Querrichtung, jedoch nun in Richtung vom ersten Gehäuseteil 5 zum Getriebedeckel 10 geleitet.In one with respect to the longitudinal direction of the hand planer rear part additional inflow openings 12 are introduced into the gear cover 10, via which the second additional cooling air flow 9 can flow into the region 16 in the housing. The second cooling air stream 9, which flows into the housing interior covered by the gear cover 10, passes along the gear units or transfer elements and cools them. In this first section, the second cooling air flow initially proceeds approximately in the longitudinal direction. In the front, covered by the gear cover 10 area of the second cooling air flow 9 is deflected into a transverse to the longitudinal axis, formed inside the housing connecting channel 15 and directed to the opposite side of the housing, where the union with the first cooling air flow 7 takes place. Both air streams are then passed again in the transverse direction, but now in the direction of the first housing part 5 to the gear cover 10.

Sowohl der erste Kühlluftstrom 7 als auch der zweite Kühlluftstrom 9 werden von einem Lüfterrad 13 erzeugt, die drehfest mit der Antriebswelle 14 des Antriebsmotors gekoppelt ist. Das Lüfterrad 13 befindet sich im Gehäuseinneren auf der dem vom Getriebedeckel 10 überdeckten Bereich 16 benachbarten Seite, ist jedoch gegenüber dem Bereich 16 über eine innere Gehäusewandung separiert. Das Lüfterrad 13 erzeugt einen Unterdruck, wodurch die beiden Kühlluftströme 7 und 9 über die Einströmöffnungen 6 bzw. 12 angesaugt werden. Stromab des Lüfterrades 13 wird der Kühlluftstrom in Längsrichtung der Maschine zum vorderen Teil des Gehäuses umgelenkt (Pfeil 17) und im weiteren Verlauf gemäß einer ersten Variante über Abströmöffnungen 19 im vorderen Teil des Getriebedeckels 10 gemäß Pfeil 18 in die Umgebung abgeleitet oder, gemäß einer zweiten Variante, um 180° gemäß Pfeil 20 in einen Luft-Span-Kanal 21 umgelenkt, über den vom Schneidwerkzeug der Handhobelmaschine abgetragene Späne zum hinteren Bereich der Handhobelmaschine transportiert und aus dem Gehäuse 2 abgeleitet werden. Der Luft-Span-Kanal 21 befindet sich im Inneren des Haupthandgriffes 3.Both the first cooling air flow 7 and the second cooling air flow 9 are generated by a fan wheel 13, which is non-rotatably coupled to the drive shaft 14 of the drive motor. The fan 13 is located inside the housing on the however, the area 16 adjacent to the area covered by the gear cover 10 is separated from the area 16 by an inner housing wall. The fan 13 generates a negative pressure, whereby the two cooling air streams 7 and 9 are sucked in via the inlet openings 6 and 12, respectively. Downstream of the fan wheel 13, the cooling air flow is deflected in the longitudinal direction of the machine to the front part of the housing (arrow 17) and further derived according to a first variant via outflow openings 19 in the front part of the gear cover 10 according to arrow 18 in the environment or, according to a second Variant, deflected by 180 ° according to arrow 20 in an air-chip channel 21, transported over the removed from the cutting tool of the hand planer chips to the rear portion of the hand planer and derived from the housing 2. The air-chip channel 21 is located inside the main handle 3.

Wie der Schnittdarstellung gemäß Fig. 3 zu entnehmen, liegt der Verbindungskanal 15 zwischen dem Bereich 16, welcher von dem Getriebedeckel 10 überdeckt wird, und dem gegenüberliegenden Gehäuseteil 5 in Längsrichtung der Handhobelmaschine 1 gesehen vor den in den Bereich 16 einragenden Getriebeeinheiten 23, so dass der über die.zusätzlichen Einströmöffnungen 12 herangeführte, zweite Kühlluftstrom 9 unmittelbar an diesen Getriebeeinheiten 23 vorbei streichen muss und diese kühlt. Im Anschluss daran wird der zusätzliche Kühlluftstrom 9 in Querrichtung durch den Verbindungskanal 15 geleitet und im gegenüberliegenden Gehäuseteil 5 umgelenkt und mit dem ersten Kühlluftstrom vereinigt. Bei den in den Bereich 16 einragenden Getriebeeinheiten handelt es sich um die Stirnseite der Antriebswelle 14, um die ein Übertragungsriemen 24 (Fig. 4) zur Bewegungsübertragung auf die Welle des Schneidmessers gespannt ist.As the sectional view according to Fig. 3 can be seen, the connecting channel 15 is located between the area 16, which is covered by the gear cover 10, and the opposite housing part 5 in the longitudinal direction of the hand planer 1 in front of the projecting into the area 16 gear units 23, so that the die.zusätzlichen via 12th zoom guided, second cooling air flow 9 must stroke immediately past these gear units 23 and this cools. Subsequently, the additional cooling air flow 9 is passed in the transverse direction through the connecting channel 15 and deflected in the opposite housing part 5 and combined with the first cooling air flow. The gear units projecting into the region 16 are the end face of the drive shaft 14 around which a transmission belt 24 (FIG. Fig. 4 ) is stretched to transmit the motion to the shaft of the cutting blade.

Fig. 4 stellt die Handhobelmaschine 1 in perspektivischer Ansicht bei abgenommenem Getriebedeckel dar. Zu erkennen ist der Übertragungsriemen 24 zwischen der Antriebswelle 14 und der bezogen auf die Längsrichtung weiter vorne liegenden Welle 25 de Schneidwerkzeugs. Eingetragen sind auch der zweite Kühlluftstrom 9, der sowohl an den Getriebeeinheiten 23 als auch am Übertragungsriemen 24 entlang strömt und danach über eine Mündungsöffnung 25 des Verbindungskanals 15 durch diesen zur gegenüberliegenden Seite der Maschine geleitet wird. Fig. 4 represents the hand planer 1 in a perspective view with the gear cover removed. It can be seen the transmission belt 24 between the drive shaft 14 and with respect to the longitudinal direction further forward wave 25 de cutting tool. Entered are also the second cooling air flow 9, which flows along both the gear units 23 and the transmission belt 24 and is then passed through a mouth opening 25 of the connecting channel 15 through this to the opposite side of the machine.

Dargestellt ist in Fig. 4 auch ein Gehäuseabschnitt 26, der gegenüber dem Bereich 16, durch den der zweite Kühlluftstrom 9 strömt, separiert ist und einen Strömungskanal für die Ableitung der vereinigten Kühlluftströme stromab des Lüfterrades aufweist. Eingetragen ist in dem Gehäuseabschnitt 26 der Pfeil 17, der, wie auch in Fig. 2 dargestellt, den vereinigten Kühlluftstrom nach dem Passieren des Lüfterrades repräsentiert. Im weiteren Verlauf kann der vereinigte Kühlluftstrom 17 gemäß Pfeil 20 in den Luft-Span-Kanal zum Austrag der Späne umgelenkt werden, oder, alternativ, direkt aus dem Gehäuse abgeleitet werden.Is shown in Fig. 4 also a housing section 26, which is separated from the region 16, through which the second cooling air flow 9 flows, and has a flow channel for the discharge of the combined cooling air streams downstream of the fan wheel. Entered in the housing portion 26 of the arrow 17, which, as well as in Fig. 2 represented represents the combined cooling air flow after passing the fan wheel. In the further course of the combined cooling air flow 17 can be deflected according to arrow 20 in the air-chip channel for discharging the chips, or, alternatively, be derived directly from the housing.

Claims (7)

  1. Portable electric power tool comprising a housing (2) and an electric drive motor (22) which is arranged in the housing (2) and the drive shaft (14) of which is coupled to a rotating cutting tool via a transmission element (24), wherein the transmission element (24) can be covered by a transmission cover (10) of the housing (2), comprising a fan impeller (13) which is driven by the drive shaft (14) and draws in cooling air via first inflow openings (6) which are located in a lateral housing part (5), which cooling air is to be directed via the drive motor (22) and is to be discharged from the housing (2) via outflow openings (19), wherein additional inflow openings (12) for cooling air are arranged in the housing (2) on the side adjacent to the transmission element (24), wherein the region (16) in the housing (2) in which the transmission element (24) is arranged is connected to the flow path between the first inflow openings (6) and the fan impeller (13) via a connecting passage (15) extending transversely to the longitudinal axis (11) of the electric power tool (1), characterized in that the first flow openings (6) and the additional flow openings (12) are arranged on opposite sides of the housing (2).
  2. Electric power tool according to Claim 1, characterized in that the connecting passage (15) branches off axially - as viewed in the longitudinal direction of the electric power tool - between the drive shaft (14) of the drive motor and a shaft (25) of the cutting tool from that region (16) in the housing (2) which accommodates the transmission element (24).
  3. Electric power tool according to Claim 1 or 2, characterized in that the additional flow openings (12) are arranged in a removable transmission cover (10) of the housing (2).
  4. Electric power tool according to one of Claims 1 to 3, characterized in that the transmission element is a transmission belt (24) between the drive shaft (14) of the drive motor (22) and a shaft (25) of the cutting tool.
  5. Electric power tool according to one of Claims 1 to 4, characterized in that the cooling air directed via the drive motor (22) leads downstream of the fan impeller (13) into an air/chip passage (21).
  6. Electric power tool according to one of Claims 1 to 5, characterized in that the cooling air directed via the drive motor (22) is to be discharged from the housing (2) downstream of the fan impeller (13).
  7. Electric power tool according to one of Claims 1 to 6, characterized in that the electric power tool is a portable planer (1).
EP06830042A 2005-12-28 2006-11-20 Portable electric power tool Not-in-force EP1968772B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200510062697 DE102005062697A1 (en) 2005-12-28 2005-12-28 Hand-held power tool
PCT/EP2006/068639 WO2007077050A1 (en) 2005-12-28 2006-11-20 Portable electric power tool

Publications (2)

Publication Number Publication Date
EP1968772A1 EP1968772A1 (en) 2008-09-17
EP1968772B1 true EP1968772B1 (en) 2011-02-16

Family

ID=37776799

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06830042A Not-in-force EP1968772B1 (en) 2005-12-28 2006-11-20 Portable electric power tool

Country Status (4)

Country Link
EP (1) EP1968772B1 (en)
CN (1) CN101351309B (en)
DE (2) DE102005062697A1 (en)
WO (1) WO2007077050A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101780680A (en) * 2010-03-05 2010-07-21 宁波市鄞州稳汀机电科技有限公司 Trimming and dividing machine for woodworking
DE102010030376A1 (en) * 2010-06-23 2011-12-29 Robert Bosch Gmbh Hand tool
EP2465647A3 (en) * 2010-12-20 2013-01-16 HILTI Aktiengesellschaft Hand tool machine with air circulation element
DE102013203617B4 (en) 2013-03-04 2023-12-14 Robert Bosch Gmbh Hand tool
DE102013208705A1 (en) * 2013-05-13 2014-11-13 Robert Bosch Gmbh Portable planer
JP6127840B2 (en) * 2013-09-02 2017-05-17 日立工機株式会社 Electric tool
JP6238064B2 (en) * 2013-12-27 2017-11-29 日立工機株式会社 Electric plane
EP2923802A1 (en) * 2014-03-25 2015-09-30 HILTI Aktiengesellschaft Belt cooling
DE102014207867A1 (en) 2014-04-25 2015-10-29 Robert Bosch Gmbh Machine tool cooling device
CN110605765A (en) * 2019-11-09 2019-12-24 泰州市汇顶机械制造有限公司 Electric planer convenient to chip removal is removed dust

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1943624U (en) * 1966-04-23 1966-08-04 Scheer & Cie C F HAND PLANING MACHINE.
DE3406728A1 (en) * 1984-02-24 1985-08-29 Karl M. Reich Maschinenfabrik GmbH, 7440 Nürtingen HAND PLANER
DE19512262C2 (en) * 1995-03-24 2003-07-31 Black & Decker Inc Hand-held, motor-driven planer
DE19839963A1 (en) * 1998-09-02 2000-03-09 Hilti Ag Power tool
DE10358027A1 (en) * 2003-12-11 2005-07-21 Hilti Ag hand tool
GB0428210D0 (en) * 2004-12-23 2005-01-26 Black & Decker Inc Mode change mechanism

Also Published As

Publication number Publication date
CN101351309A (en) 2009-01-21
EP1968772A1 (en) 2008-09-17
DE102005062697A1 (en) 2007-07-12
CN101351309B (en) 2012-05-23
DE502006008927D1 (en) 2011-03-31
WO2007077050A1 (en) 2007-07-12

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