EP1968772B1 - Outil electrique manuel - Google Patents

Outil electrique manuel 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
Authority
EP
European Patent Office
Prior art keywords
housing
cooling air
electric power
power tool
drive motor
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
EP06830042A
Other languages
German (de)
English (en)
Other versions
EP1968772A1 (fr
Inventor
Gabor Papp
Jozsef Dudas
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 EP1968772A1 publication Critical patent/EP1968772A1/fr
Application granted granted Critical
Publication of EP1968772B1 publication Critical patent/EP1968772B1/fr
Active 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
    • 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.

Landscapes

  • 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

L'invention concerne un outil électrique manuel, qui comporte un boîtier (2) et un moteur électrique d'entraînement (22) dont l'arbre d'entraînement (14) est accouplé par l'intermédiaire d'un organe de transmission (24) à un outil de coupe rotatif. L'outil comprend une roue (13) de ventilateur entraînée par l'arbre d'entraînement et qui par des premières ouvertures d'admission (6) aspire dans le boîtier de l'air de refroidissement qui est amené au moteur d'entraînement et est évacué du boîtier par des ouvertures d'évacuation (19). Des ouvertures supplémentaires d'admission (12) sont prévues pour l'air de refroidissement sur le côté voisin de l'organe de transmission et la partie (16) située à l'intérieur du boîtier et dans laquelle l'organe de transmission est disposé est reliée par un canal de liaison (15) au parcours d'écoulement qui relie les premières ouvertures d'admission et la roue de ventilateur.

Claims (7)

  1. Outil électrique manuel, comprenant un boîtier (2) et un moteur d'entraînement électrique (22) disposé dans le boîtier (2), dont l'arbre d'entraînement (14) est accouplé par le biais d'un organe de transmission (24) à un outil de coupe rotatif, l'organe de transmission (24) pouvant être recouvert par un couvercle de transmission (10) du boîtier (2), une roue de ventilateur (13) entraînée par l'arbre d'entraînement (14), qui, par le biais de premières ouvertures d'afflux (6) qui se trouvent dans une partie latérale du boîtier (5), aspire de l'air de refroidissement qui doit être guidé par le biais du moteur d'entraînement (22) et par le biais d'ouvertures d'évacuation (19) hors du boîtier (2),
    des ouvertures d'afflux supplémentaires (12) pour de l'air de refroidissement étant disposées dans le boîtier (2) du côté adjacent à l'organe de transmission (24), la région (16) dans le boîtier (2), dans laquelle est disposé l'organe de transmission (24), étant connectée par le biais d'un canal de connexion (15) s'étendant transversalement à l'axe longitudinal (11) de l'outil électrique (1) à la voie d'écoulement entre les premières ouvertures d'afflux (6) et la roue de ventilateur (13),
    caractérisé en ce que
    les premières ouvertures d'afflux (6) et les ouvertures d'écoulement supplémentaires (12) sont disposées sur des côtés opposés du boîtier (2).
  2. Outil électrique selon la revendication 1,
    caractérisé en ce que
    le canal de connexion (15) part axialement - vu dans la direction longitudinale de l'outil électrique - entre l'arbre d'entraînement (14) du moteur d'entraînement et un arbre (25) de l'outil de coupe depuis la région (16) dans le boîtier (2) recevant l'organe de transmission (24).
  3. Outil électrique selon la revendication 1 ou 2,
    caractérisé en ce que
    les ouvertures d'écoulement supplémentaires (12) sont disposées dans un couvercle de transmission amovible (10) du boîtier (2).
  4. Outil électrique selon l'une quelconque des revendications 1 à 3,
    caractérisé en ce que
    l'organe de transmission est une courroie de transmission (24) entre l'arbre d'entraînement (14) du moteur d'entraînement (22) et un arbre (25) de l'outil de coupe.
  5. Outil électrique selon l'une quelconque des revendications 1 à 4,
    caractérisé en ce que
    l'air de refroidissement guidé par le biais du moteur d'entraînement (22) débouche en aval de la roue de ventilateur (13) dans un canal d'air pour l'évacuation des copeaux (21).
  6. Outil électrique selon l'une quelconque des revendications 1 à 5,
    caractérisé en ce que
    l'air de refroidissement guidé par le biais du moteur d'entraînement (22) doit être évacué en aval de la roue de ventilateur (13) hors du boîtier (2).
  7. Outil électrique selon l'une quelconque des revendications 1 à 6,
    caractérisé en ce que
    l'outil électrique est un rabot manuel (1).
EP06830042A 2005-12-28 2006-11-20 Outil electrique manuel Active EP1968772B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200510062697 DE102005062697A1 (de) 2005-12-28 2005-12-28 Handgeführtes Elektrowerkzeug
PCT/EP2006/068639 WO2007077050A1 (fr) 2005-12-28 2006-11-20 Outil electrique manuel

Publications (2)

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

Family

ID=37776799

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06830042A Active EP1968772B1 (fr) 2005-12-28 2006-11-20 Outil electrique manuel

Country Status (4)

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

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101780680A (zh) * 2010-03-05 2010-07-21 宁波市鄞州稳汀机电科技有限公司 木工用修边刻线机
DE102010030376A1 (de) * 2010-06-23 2011-12-29 Robert Bosch Gmbh Handwerkzeugmaschine
EP2465647A3 (fr) * 2010-12-20 2013-01-16 HILTI Aktiengesellschaft Machine-outil manuelle dotée d'un élément de conduite d'air
DE102013203617B4 (de) 2013-03-04 2023-12-14 Robert Bosch Gmbh Handwerkzeugmaschine
DE102013208705A1 (de) * 2013-05-13 2014-11-13 Robert Bosch Gmbh Handhobelmaschine
JP6127840B2 (ja) * 2013-09-02 2017-05-17 日立工機株式会社 電動工具
JP6238064B2 (ja) * 2013-12-27 2017-11-29 日立工機株式会社 電動かんな
EP2923802A1 (fr) * 2014-03-25 2015-09-30 HILTI Aktiengesellschaft Refroidissement de courroie
DE102014207867A1 (de) * 2014-04-25 2015-10-29 Robert Bosch Gmbh Werkzeugmaschinenkühlungsvorrichtung
CN110605765A (zh) * 2019-11-09 2019-12-24 泰州市汇顶机械制造有限公司 一种便于排屑除尘的电刨

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1943624U (de) * 1966-04-23 1966-08-04 Scheer & Cie C F Handhobelmaschine.
DE3406728A1 (de) * 1984-02-24 1985-08-29 Karl M. Reich Maschinenfabrik GmbH, 7440 Nürtingen Handhobelmaschine
DE19512262C2 (de) * 1995-03-24 2003-07-31 Black & Decker Inc Handgeführter, motorgetriebener Hobel
DE19839963A1 (de) * 1998-09-02 2000-03-09 Hilti Ag Elektrowerkzeug
DE10358027A1 (de) * 2003-12-11 2005-07-21 Hilti Ag Handwerkzeug
GB0428210D0 (en) * 2004-12-23 2005-01-26 Black & Decker Inc Mode change mechanism

Also Published As

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

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