EP4230352B1 - Appareil de travail portatif - Google Patents

Appareil de travail portatif

Info

Publication number
EP4230352B1
EP4230352B1 EP22157832.1A EP22157832A EP4230352B1 EP 4230352 B1 EP4230352 B1 EP 4230352B1 EP 22157832 A EP22157832 A EP 22157832A EP 4230352 B1 EP4230352 B1 EP 4230352B1
Authority
EP
European Patent Office
Prior art keywords
housing
drive motor
cooling
intake opening
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
EP22157832.1A
Other languages
German (de)
English (en)
Other versions
EP4230352A1 (fr
Inventor
David Klett
Heiko Diehl
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.)
Andreas Stihl AG and Co KG
Original Assignee
Andreas Stihl AG and Co KG
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 Andreas Stihl AG and Co KG filed Critical Andreas Stihl AG and Co KG
Priority to EP22157832.1A priority Critical patent/EP4230352B1/fr
Priority to CN202320236891.5U priority patent/CN219893939U/zh
Publication of EP4230352A1 publication Critical patent/EP4230352A1/fr
Application granted granted Critical
Publication of EP4230352B1 publication Critical patent/EP4230352B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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

  • Portable work tools are known from the prior art, comprising a housing, a drive motor arranged in the housing, and a tool driven by the drive motor.
  • One or more intake openings are provided on the housing to cool the drive motor. Cooling air can flow into the housing through the intake openings, cool the drive motor, and exit through an outlet opening.
  • Corresponding portable work tools are known from the patent documents US9718180 B2 and US10434635 B2 known. The document US9718180 B2 discloses the preamble of claim 1.
  • the invention is therefore based on the object of providing a portable working device that reliably ensures sufficient cooling capacity for cooling the drive motor.
  • the intake openings of the implement's housing can become blocked and impede the supply of cooling air.
  • the invention is based on the finding that the blockage of an intake opening essentially has two effects. Firstly, the supply of overall cooling air is reduced, which also reduces the cooling performance of the implement. Secondly, the cooling performance is only provided partially, for example via essentially one intake opening, which results in uneven cooling of the drive motor and/or the electronic components. In particular, the components that are intended to be surrounded by the cooling air from the blocked intake opening do not receive sufficient cooling.
  • the portable work device comprises a housing with a rear end and a front end, a tool, wherein the tool is arranged at the front end of the housing, a drive motor arranged in the housing between the rear end and the front end and having a rotational axis for driving the tool, wherein the drive motor has a motor housing with a first end facing the rear end of the housing and a second end facing the front end of the housing, wherein a first intake opening and a second intake opening for cooling air for cooling the drive motor are formed on the housing, wherein the first intake opening is arranged between the rear end of the housing and the first end of the motor housing of the drive motor, wherein the second intake opening is arranged between the front end of the housing and the first end of the motor housing of the drive motor, a first cooling air duct and a second cooling air duct, wherein the first cooling air duct extends from the first intake opening to the first end of the motor housing of the drive motor, and wherein the second cooling air duct extends from the second intake opening to the
  • the portable work device provides a first cooling air duct and a second cooling air duct for cooling the drive motor. Additionally, the cooling air ducts are connected to each other via a bypass.
  • the drive motor comprises a fan impeller rotating about the rotational axis.
  • the fan impeller generates a first cooling air stream flowing along the first cooling air duct and a second cooling air stream flowing along the second cooling air duct.
  • at least one outlet opening is provided on the housing for discharging the cooling air streams from the housing. This allows the heated cooling air to be transported out of the housing of the implement.
  • the bypass runs, in particular, outside the drive motor. This allows for the cooling air to be distributed outside the drive motor.
  • the cooling air surrounds the drive motor and ensures uniform cooling.
  • a rotational plane spanned by the fan impeller intersects the bypass. Accordingly, the bypass is located at the level of the drive motor.
  • the bypass is preferably arranged directly on the motor housing 20.
  • a first filter is preferably provided at the intake openings, wherein the first filter is preferably a metal filter.
  • a second filter is particularly provided at the intake openings, wherein the second filter is preferably a foam filter.
  • the first filter at the first intake opening and the first filter at the second intake opening are in particular designed separately from one another.
  • the second filter at the first intake opening and the second filter at the second intake opening are also designed separately.
  • the filters are provided for filtering particles so that the drive motor and other components arranged in the housing of the working device do not become dirty.
  • the first filter designed as a metal filter, serves to filter coarse dirt particles.
  • the second filter designed as a foam filter, on the other hand, serves to filter smaller dirt particles.
  • the second filter preferably has a smaller pore size than the first filter.
  • the first filter and the second filter are arranged one behind the other at each intake opening.
  • the first filter and the second filter are each arranged at an intake opening in such a way that the sucked-in air or the cooling air streams first flow through the first filter and then the second filter.
  • dirt particles are generated by the tool in use and distributed across the housing.
  • the trajectory of such dirt particles depends, among other things, on the type of tool, the position of the tool, and also on external factors such as weather or similar. If, for example, the tool is designed as a pole pruner, at least some of the resulting sawdust from the tool will fly across the housing.
  • the offset arrangement of the intake openings reduces the probability of The intake openings clog at the same time because at least one of the two intake openings is not in the path of the dirt particles. This advantage results from both the angular spacing of the intake openings and the different distances between the intake openings and the front end of the housing.
  • the housing preferably has a total length extending from the rear end to the front end.
  • the first distance preferably corresponds to at least 50%, preferably at least 70%, in particular approximately 80% of the total length of the housing.
  • the second distance corresponds to at least 25%, preferably at least 35%, in particular at least 40% of the total length of the housing.
  • the intake openings are also arranged offset from one another in the direction of the rotational axis of the drive motor or in the longitudinal direction of the implement.
  • the housing has a top side, a bottom side, a first longitudinal side and a second longitudinal side, wherein the first suction opening is arranged on the top side of the housing.
  • the first suction opening which is a greater distance from the front end of the housing and thus also from the tool, is therefore arranged on the top side of the housing.
  • the second suction opening which is arranged closer to the front side of the housing, is preferably arranged on one of the two longitudinal sides of the housing. Due to the orientation of the guide bar and the associated direction of movement of the saw chain, pole pruners and chainsaws generally tend to become dirty on the top and bottom of the housing.
  • the suction opening arranged closer to the tool and thus also closer to the source of the dirt particles is preferably designed and protected from dirt on one of the two long sides.
  • the portable tool 1 is shown, which is designed as a pole pruner.
  • the portable tool 1 can also be designed as a power chain saw, hedge trimmer, circular saw, or similar tool.
  • the portable tool 1 comprises a housing 2, a drive motor 5 arranged in the housing 2, and a tool 9 drivable by the drive motor 5.
  • the drive motor 5 is designed as an electric motor.
  • the electric motor can be a DC motor in the form of a commutator motor or an EC motor controlled by a DC voltage via a control device (e.g., a universal motor, a brushless DC motor, or an electronically commutated DC motor).
  • the drive motor can also be designed as an internal combustion engine.
  • the portable working device 1 comprises a guide tube 51 with a first end 52 and a second end 53.
  • the housing 2 of the working device 1 is held at the first end 52 of the guide tube.
  • a second housing 54 is held at the second end 53 of the guide tube 51.
  • the second housing 54 has a receiving shaft 55 for receiving a battery or similar energy source. It may be expedient to use a stationary power supply network as the energy source, which is connected via an electrical line to the second housing 54 or to control electronics arranged in the second housing 54.
  • an operating handle 56 with operating elements is provided at the second end 53 of the guide tube 51.
  • the operating elements provided are an operating element referred to as an operating lever 57 or throttle lever and a locking lever 58.
  • the operating lever 57 is used to control the drive motor 5.
  • the locking lever 58 is provided to secure the operating lever 57.
  • the guide tube 51 is designed to be telescopic.
  • the guide tube 51 comprises a first tube section 62 with the first end 52 of the guide tube 51 and a second tube section 63 with the second end 53 of the guide tube 51.
  • the guide tube 51 comprises a clamping device 59.
  • the clamping device 59 is preferably fastened to the second tube section 63.
  • the clamping device 59 serves to fix the first tube section 62 to the second tube section 63.
  • the housing 2 of the portable power tool 1 extends in a longitudinal direction 19 from a rear end 3 to a front end 4.
  • the tool 9 is arranged at the front end 4 of the housing.
  • the tool 9 is designed in the exemplary embodiment as a saw chain 33.
  • the saw chain 33 is connected to the chain drive wheel 38 ( Fig. 5 ) around a guide rail 32 in a running direction 37 driven.
  • the running direction 37 of the saw chain 33 is the direction of movement of the saw chain 33 intended for the intended operation of the work tool 1 for chip removal.
  • the chain drive wheel 38 is rotationally driven via the drive motor 5.
  • the guide bar 32 is arranged at the front end 4 of the housing 2 and extends in a longitudinal direction 34, which corresponds to a direction from the rear end 3 to the front end 4 of the housing 2.
  • the saw chain 33 spans a tool plane 30, with both the saw chain 33 and the guide bar 32 lying in the tool plane 30.
  • the guide rail 32 comprises an upper side 35 and a lower side 36.
  • the saw chain 33 runs along the upper side 35 of the guide rail 32 in the direction away from the front end 4 of the housing 2.
  • the saw chain 33 runs along the lower side 35 of the guide rail 32 in the direction toward the front end 4 of the housing 2. Both the upper side 35 of the guide rail 32 and the lower side 36 of the guide rail 32 lie in the tool plane 30.
  • the housing 2 extends along its longitudinal direction 19 from its rear end 3 to its front end 4.
  • the rear end 3 forms the first end face 39 of the housing 2.
  • the front end 4 of the housing 2 forms the second end face 40 of the housing 2.
  • the housing 2 comprises an upper side 26 and a lower side 27.
  • the housing 2 comprises a first longitudinal side 28 and a second longitudinal side 29.
  • the first end face 39 and the second end face 40 of the housing 2 are connected to one another via the upper side 26, the lower side 27, the first longitudinal side 28 and the second longitudinal side 29 of the housing 2.
  • the upper side 26 of the housing 2 lies above the underside 27 of the housing 2.
  • the housing 2 comprises a Transverse plane 47, which is oriented orthogonally to the longitudinal plane 46 and the vertical direction 45.
  • the longitudinal sides 28, 29 are arranged opposite one another with respect to the longitudinal plane 46.
  • the top side 26 and the bottom side 27 are arranged opposite one another with respect to the transverse planes 47.
  • the longitudinal plane 46 of the housing 2 is oriented parallel to the tool plane 30.
  • the drive motor 5 designed as an electric motor, is arranged in the housing 2 between the rear end 3 of the housing 2 and the front end 4 of the housing 2.
  • the drive motor 5 comprises an axis of rotation 6, which in the exemplary embodiment corresponds to the longitudinal direction 19 of the housing 2.
  • the drive motor 5 comprises a housing 20, which extends along the axis of rotation 6 of the drive motor 5 from a front-side first end 7 to a front-side second end 8 of the motor housing 20.
  • the first end 7 of the motor housing 20 faces the rear end 3 of the housing 2.
  • the second end 8 of the drive motor 5 faces the front end 4 of the housing 2.
  • the drive motor 5 comprises a drive shaft 23, which protrudes from the housing 2 at the second end 8 of the housing 2 in the direction of the front end 4 of the housing 2. At this end of the drive shaft 23, a drive pinion 25 is arranged, which drives the drive sprocket 38 via a bevel gear 24.
  • the housing 2 comprises a first intake opening 11 and a second intake opening 12.
  • the intake openings 11, 12 serve to draw in cooling air to cool the drive motor 5.
  • the housing 2 comprises at least one outlet opening 18, which serves to discharge the cooling air heated by the drive motor 5.
  • several outlet openings 18, in particular three outlet openings 18, are provided.
  • a different number of outlet openings 18 may also be expedient.
  • a fan wheel 10 is arranged on the drive shaft 5 of the drive motor 5.
  • the fan wheel 10 is driven in rotation about the rotational axis 6 of the drive motor 5 via the drive shaft 23.
  • the fan wheel 10 is designed as a radial fan wheel
  • the fan wheel 10 is designed such that, during operation of the working device 1, cooling air is sucked in through the intake openings 11, 12 via the fan wheel 10 and expelled through the outlet openings 18.
  • the first intake opening 11 is arranged between the rear end 3 of the housing 2 and the first end 7 of the motor housing 20 of the drive motor 5.
  • the second intake opening 12 is arranged between the front end 4 of the housing 2 and the first end 7 of the motor housing 20 of the drive motor 5.
  • the working device 1 comprises a first cooling air duct 13 and a second cooling air duct 14.
  • the first cooling air duct 13 extends from the first intake opening 11 to the first end 7 of the motor housing 20.
  • the second cooling air duct extends from the second intake opening 12 to the second end 8 of the motor housing 20.
  • the first cooling air duct 13 and the second cooling air duct 14 are connected to one another via a bypass 15.
  • the bypass 15 ensures pressure equalization between the first cooling air duct 13 and the second cooling air duct 14. If one of the two intake openings 11, 12 is at least partially blocked, the cooling air duct 13, 14 corresponding to the blocked intake opening 11, 12 can be supplied with cooling air from the other cooling air duct 13, 14 via the bypass 15.
  • the motor housing 20 comprises at least one first inlet opening 41 at its first end 7.
  • the motor housing 20 comprises at least one second inlet opening 42 at its second end 8.
  • the motor housing 20 comprises at least one outlet opening 43 on its outer surface.
  • the outlet opening 43 of the motor housing 20 is arranged radially to the fan wheel 10. Accordingly, the outlet opening 43 is at the same height as the fan wheel 43 in the direction of the axis of rotation 6 of the drive motor 5.
  • a first cooling air flow 16 and a second cooling air flow 17 are generated via the fan wheel 10 rotating about the rotation axis 6.
  • the first cooling air flow 16 runs from the first intake opening 11 via the first cooling air duct 13 to the first end 7 of the motor housing 20.
  • the first cooling air flow 16 flows through the at least one first inlet opening 41 into the motor housing 20 and flows to the fan wheel 10.
  • the first cooling air flow 16 absorbs heat radiated by the drive motor 5.
  • the second cooling air flow 17 runs from the second intake opening 12 via the second cooling air duct 14 to the second end 8 of the motor housing 20.
  • the second cooling air flow 16 flows through the at least one second inlet opening 42 into the motor housing 20 and flows to the fan wheel 10.
  • the second cooling air flow 17 crosses the coils of the drive motor 5.
  • the second cooling air flow 17 absorbs the heat radiated by the drive motor 5.
  • the heated cooling air streams 16, 17 are conveyed via the fan wheel 10 radially to the rotational axis 6 of the drive motor 5 through the outlet opening 43 of the motor housing 20 out of the drive motor 5. Subsequently, the heated cooling air streams 16, 17 flow from the at least one outlet opening 43 of the motor housing 20 through the outlet openings 18 out of the housing 2. As a result, the heat generated by the drive motor 5 is conducted out of the housing 2.
  • the bypass 15 runs outside the drive motor 5.
  • the bypass 15 extends over the entire length of the motor housing 20 measured in the direction of the axis of rotation 6.
  • the bypass 15 crosses the cooling air flows 16, 17 as they exit the outlet opening 43 of the motor housing 20.
  • the bypass 15 is designed such that a plane of rotation 31 defined by the fan wheel 10 is intersected by the bypass 15.
  • the plane of rotation 31 is aligned perpendicular to the axis of rotation 6 of the drive motor 5 and intersects the fan wheel 10.
  • the plane of rotation 31 is aligned perpendicular to the longitudinal plane 46 and perpendicular to the transverse plane 47.
  • the first intake opening 11 and the second intake opening 12 are arranged offset from each other at an angular distance ⁇ relative to the rotational axis 6 of the drive motor 5.
  • the angular distance ⁇ between the intake openings 11, 12 is at least 15° in the exemplary embodiment, preferably at least 25°, in particular approximately 30°.
  • the angular distance ⁇ between the intake openings 11, 12 is at most 150° in the exemplary embodiment, in particular at most 120°, preferably at most 90°.
  • the first suction opening 11 in the exemplary embodiment is arranged on the top side 26 of the housing 2.
  • the second suction opening 12 is preferably arranged on one of the two longitudinal sides 28, 29.
  • the second suction opening 12 is arranged on the first longitudinal side 28, wherein the first longitudinal side 28 has a greater distance from the tool plane 30 than the second longitudinal side 29.
  • the distance of the longitudinal sides 28, 29 from the tool plane 30 is to be measured at the front end 4 of the housing 2 perpendicular to the tool plane 30. This is intended to reduce or prevent contamination emanating from the tool 9 at the second suction opening 12.
  • the first suction opening 11 is arranged as close as possible to the rear end 3 of the housing 2 in order to maximize the distance to the tool 9. This also reduces or avoids the contamination emanating from the tool 9.
  • the distance of the second suction opening 12 to the tool 9 is less than the distance of the first suction opening 11 to the tool 9.
  • the housing 2 has a total quantity l extending from the rear end 3 to the front end 4.
  • the first suction opening 11 has a first distance a to the front end 4 of the housing 2 and the second suction opening 12 has a distance b to the front end 4 of the housing 2.
  • the first distance a is greater than the second distance b.
  • the first distance a corresponds to at least 50%, preferably at least 70%, in particular approximately 80% of the total length l of the housing 2.
  • the second distance b corresponds to at least 25%, preferably at least 35%, in particular approximately 40% of the total length l of the housing 2.
  • the first intake opening 11 has a maximum width c measured in the direction running from the first longitudinal side 28 to the second longitudinal side 29.
  • the maximum width c corresponds to at least 20%, preferably at least 30%, in particular approximately 40% of the maximum width d of the housing 2, i.e. the maximum distance between the first longitudinal side 28 and the second longitudinal side 29.
  • the first intake opening 11 extends over a maximum height e, wherein the height e is measured in the vertical direction 45.
  • the maximum height e of the first intake opening 11 corresponds to at least 5% of the maximum height f of the housing 2, wherein the maximum height f of the housing 2 is also measured in the vertical direction 45.
  • the second intake opening 11 also has a maximum height g measured in the vertical direction 45, wherein the maximum height g of the second intake opening 11 corresponds to at least 10%, preferably at least 20%, in particular at least 30% of the maximum height f of the housing 2.
  • the second intake opening 12 has a maximum width h measured in the longitudinal direction 19, wherein the width h of the second opening 12 corresponds to at least 5% of the total length l of the housing 2.
  • the first suction opening 11 and the second suction opening 12 are closed in the direction of the front end 4 of the housing 2, i.e. towards the tool 9. This prevents dirt particles from the tool 9 from getting into the suction openings 11, 12.
  • Both suction openings 11, 12 are located in an undercut of the housing 2 with respect to the front end 4 of the housing 2. Accordingly, the suction openings 11, 12 are arranged hidden by the housing 2 towards the front end 4 of the housing 2.
  • a first filter and a second filter are provided at the suction openings 11, 12.
  • the first filter facing the surroundings of the working device is designed as a metal filter.
  • the second filter covered by the first filter is preferably a foam filter.
  • the first filter is used to filter coarse dirt particles
  • the second filter is used to filter finer dirt particles.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Motor Or Generator Cooling System (AREA)

Claims (11)

  1. Appareil de travail portable,
    comprenant
    - un boîtier (2) avec une extrémité arrière (3) et une extrémité avant (4),
    - un outil (9), l'outil (9) étant agencé à l'extrémité avant (4) du boîtier (2),
    - un moteur d'entraînement (5) agencé dans le boîtier (2) entre l'extrémité arrière (3) et l'extrémité avant (4), avec un axe de rotation (6) pour entraîner l'outil (9), le moteur d'entraînement (5) présentant un boîtier de moteur (20) avec une première extrémité (7) tournée vers l'extrémité arrière (3) du boîtier (2) et une deuxième extrémité (8) tournée vers l'extrémité avant (4) du boîtier (2),
    - une première ouverture d'aspiration (11) et une deuxième ouverture d'aspiration (12) pour l'air de refroidissement pour le refroidissement du moteur d'entraînement (5) étant réalisées sur le boîtier (2),
    - la première ouverture d'aspiration (11) étant agencée entre l'extrémité arrière (3) du boîtier (2) et la première extrémité (7) du boîtier de moteur (20) du moteur d'entraînement (5) et présentant une première distance (a) par rapport à l'extrémité avant (4) du boîtier (2),
    - la deuxième ouverture d'aspiration (12) étant agencée entre l'extrémité avant (4) du boîtier (2) et la première extrémité (7) du boîtier de moteur (20) du moteur d'entraînement (5) et présentant une deuxième distance (b) par rapport à l'extrémité avant (4) du boîtier (2),
    - un premier canal d'air de refroidissement (13) et un deuxième canal d'air de refroidissement (14), le premier canal d'air de refroidissement (13) s'étendant depuis la première ouverture d'aspiration (11) jusqu'à la première extrémité (7) du boîtier de moteur (20) du moteur d'entraînement (5), et
    le deuxième canal d'air de refroidissement (14) s'étendant depuis la deuxième ouverture d'aspiration (12) jusqu'à la deuxième extrémité (8) du boîtier de moteur (20) du moteur d'entraînement (5),
    le premier canal d'air de refroidissement (13) et le deuxième canal d'air de refroidissement (14) étant reliés entre eux par une dérivation (15),
    le moteur d'entraînement (5) comprenant une roue de ventilateur (10) tournant autour de l'axe de rotation (6) ; en fonctionnement du moteur d'entraînement (5), un premier courant d'air de refroidissement (16) s'écoulant le long du premier canal d'air de refroidissement (13) et un deuxième courant d'air de refroidissement (17) s'écoulant le long du deuxième canal d'air de refroidissement (14) étant produits par la roue de ventilateur (10), caractérisé en ce qu'un plan de rotation (31) défini par la roue de ventilateur (10) coupe la dérivation (15).
  2. Appareil de travail selon la revendication 1,
    caractérisé en ce qu'au moins une ouverture d'évacuation (18) est prévue sur le boîtier (2) pour évacuer les courants d'air de refroidissement (16, 17) du boîtier (2).
  3. Outil de travail selon la revendication 1 ou la revendication 2,
    caractérisé en ce que la dérivation (15) s'étend à l'extérieur du boîtier de moteur (20) du moteur d'entraînement (5).
  4. Outil de travail selon l'une des revendications 1 à 3,
    caractérisé en ce qu'un premier filtre est prévu au niveau des ouvertures d'aspiration (11, 12), le premier filtre étant de préférence un filtre métallique.
  5. Appareil de travail selon la revendication 4,
    caractérisé en ce qu'un deuxième filtre est prévu au niveau des ouvertures d'aspiration (11, 12), le deuxième filtre étant de préférence un filtre en mousse.
  6. Outil de travail selon l'une des revendications 1 à 5,
    caractérisé en ce que la première ouverture d'aspiration (11) et la deuxième ouverture d'aspiration (12) sont agencées en décalage d'une distance angulaire (α) par rapport à l'axe de rotation (6) du moteur d'entraînement (5).
  7. Appareil de travail selon la revendication 6,
    caractérisé en ce que la distance angulaire (α) entre les ouvertures d'aspiration (11, 12) est d'au moins 15°, de préférence d'au moins 25°, notamment d'environ 30°.
  8. Outil de travail selon l'une des revendications 1 à 7,
    caractérisé en ce que le boîtier (2) présente une longueur totale (l) s'étendant de l'extrémité arrière (3) à l'extrémité avant (4), et en ce que la première distance (a) correspond à au moins 50 %, de préférence à au moins 70 %, notamment à environ 80 % de la longueur totale (l) du boîtier (2).
  9. Appareil de travail selon la revendication 8,
    caractérisé en ce que la deuxième distance (b) correspond à au moins 25 %, de préférence à au moins 35 %, notamment à environ 40 % de la longueur totale (l) du boîtier (2).
  10. Outil de travail selon l'une des revendications 1 à 9,
    caractérisé en ce que le boîtier (2) a une surface supérieure (26), une surface inférieure (27), un premier côté longitudinal (28) et un deuxième côté longitudinal (29), la première ouverture d'aspiration (11) étant agencée sur la surface supérieure (26) du boîtier (2).
  11. Appareil de travail selon la revendication 10,
    caractérisé en ce que la deuxième ouverture d'aspiration (12) est agencée sur l'un des deux côtés longitudinaux (28, 29) du boîtier (2).
EP22157832.1A 2022-02-21 2022-02-21 Appareil de travail portatif Active EP4230352B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP22157832.1A EP4230352B1 (fr) 2022-02-21 2022-02-21 Appareil de travail portatif
CN202320236891.5U CN219893939U (zh) 2022-02-21 2023-02-16 便携式的工作器具

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22157832.1A EP4230352B1 (fr) 2022-02-21 2022-02-21 Appareil de travail portatif

Publications (2)

Publication Number Publication Date
EP4230352A1 EP4230352A1 (fr) 2023-08-23
EP4230352B1 true EP4230352B1 (fr) 2025-09-17

Family

ID=80445901

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22157832.1A Active EP4230352B1 (fr) 2022-02-21 2022-02-21 Appareil de travail portatif

Country Status (2)

Country Link
EP (1) EP4230352B1 (fr)
CN (1) CN219893939U (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007053308A1 (de) * 2007-11-08 2009-05-14 Robert Bosch Gmbh Elektrowerkzeugmaschine mit einem Elektromotor
DE102010031274B4 (de) * 2009-12-18 2023-06-22 Robert Bosch Gmbh Handwerkzeugmaschine mit Kühlung des Getriebes
US9718180B2 (en) * 2013-05-09 2017-08-01 Black & Decker Inc. Power tool having improved motor and controller cooling

Also Published As

Publication number Publication date
EP4230352A1 (fr) 2023-08-23
CN219893939U (zh) 2023-10-27

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