EP2841236A1 - Machine-outil portable dotée d'un boîtier externe - Google Patents

Machine-outil portable dotée d'un boîtier externe

Info

Publication number
EP2841236A1
EP2841236A1 EP13718304.2A EP13718304A EP2841236A1 EP 2841236 A1 EP2841236 A1 EP 2841236A1 EP 13718304 A EP13718304 A EP 13718304A EP 2841236 A1 EP2841236 A1 EP 2841236A1
Authority
EP
European Patent Office
Prior art keywords
machine tool
support means
outer housing
tool according
electric drive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP13718304.2A
Other languages
German (de)
English (en)
Other versions
EP2841236B1 (fr
Inventor
Achim Hess
Uwe Früh
Jürgen Blickle
Fabian Bek
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.)
C&E Fein GmbH and Co
Original Assignee
C&E Fein GmbH and Co
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 C&E Fein GmbH and Co filed Critical C&E Fein GmbH and Co
Publication of EP2841236A1 publication Critical patent/EP2841236A1/fr
Application granted granted Critical
Publication of EP2841236B1 publication Critical patent/EP2841236B1/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
    • B25F5/02—Construction of casings, bodies or handles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/04—Portable grinding machines, e.g. hand-guided; Accessories therefor with oscillating grinding tools; Accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/007—Weight compensation; Temperature compensation; Vibration damping
    • 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
    • B25F5/006—Vibration damping means

Definitions

  • the present invention relates to a hand-held machine tool, in particular a hand-held oscillation machine tool having an outer housing extending substantially along a longitudinal axis, which has a handle portion which is provided for grasping and guiding the machine tool by a user's hand.
  • Hand-held machine tools are known from the prior art, the housing are either screwed firmly to the drive means of the machine tool or have housing, which consist of shell components, usually half-shells, which are firmly connected to each other.
  • the housings of the known in the prior art machine tools are at least partially on elements of the drive device, thereby simultaneously with a transfer of managers from the user to the machine tool and the processing forces of the Machine to the user and structure-borne noise, heat and vibration are transmitted from the drive means to the housing, whereby the safety and handling comfort of such a machine tool is impaired.
  • the invention is therefore based on the object to provide a hand-held machine tool with improved handling comfort. This is achieved according to the invention by the teaching of the independent claim. Preferred developments of the invention are the subject of the dependent claims.
  • a portable machine tool can also be a hand-operated oscillation machine tool.
  • a hand-held machine tool has an outer housing extending substantially along a longitudinal axis with a gripping area provided for grasping and guiding the machine tool by a user's hand.
  • an electric drive unit is accommodated, which rotatably drives a drive shaft of the machine tool.
  • the axis of rotation of the drive shaft is aligned substantially parallel to a longitudinal axis of the outer housing or may coincide with this.
  • a tool device is substantially rigidly coupled, which is arranged in an end region of the outer housing. The tool device can be arranged directly at a first end of the electric drive unit.
  • the tool device is arranged on another device, such as a fan device, which is preferably also substantially rigidly coupled to the electric drive unit.
  • rigidly coupled means that these devices are mechanically coupled, whereby movements, also of a high-frequency type, such as vibrations, are transmitted from one to the other element.
  • a rigid connection can therefore also be designed in the sense of the present invention by means of an integral construction or the like.
  • the outer housing of the portable machine tool according to the invention has a defined inner contour.
  • the electric drive unit and the tool device essentially rigidly coupled thereto have a defined outer contour, wherein the tool device has at least as far as a defined outer contour, insofar as this is arranged in the region of the outer housing.
  • first support devices on the outer contour of the electric drive unit and tool device and a number N of second support devices on the inner contour of the outer housing are provided.
  • the first support means and the second support means act together so that they keep the outer contour and the inner contour in this minimum distance from each other.
  • the inner contour and thus the outer housing and in particular the gripping region of the hand-held machine tool are kept at a distance from the outer contour and thus at a distance from the electric drive unit and the tool device.
  • the transmission of structure-borne noise, heat and vibration of these substantially rigidly coupled drive elements to the housing is thereby reduced, whereby the working safety and handling comfort of the machine tool is significantly improved.
  • the first and second support facilities allow a sufficient transfer of support forces such as the operators from the user to the machine tool and the machining forces from the tool to the user.
  • the tool device is used to transmit the drive torque of the electric drive unit to a preferably arranged on the tool device tool.
  • the tool device may have various elements such as gears, clutches and the like.
  • both the electric drive unit and the tool unit can be designed in several parts.
  • the machine tool preferably has a tool receptacle on the end of the tool device opposite the electric drive unit, the drive shaft of which can also be pivoted at an angle relative to the drive axle of the electric drive element.
  • the tool holder can be arranged at an outer end of the drive axle, but it can also be arranged in a region spaced from the end of the tool device.
  • the tool holder can also be arranged in a recess in the region of the drive shaft in the tool device, in which a tool can be used.
  • the tools which can be used with the machine tool are used in particular for cutting, grinding, sawing, rasping or for other machining, abrading or forming machining operations.
  • the defined outer contour of the electric drive device and tool device preferably results essentially from the shape of these drive elements, which is influenced in particular by their drive function and by requirements for an ergonomic machine tool design.
  • the defined inner contour of the outer housing preferably follows the defined outer contour of the electrical drive device at least in regions and - as far as the outer housing encloses this - the tool device.
  • the outer contour and the inner contour with the exception of the areas of the first and second support means a minimum distance from each other.
  • the predetermined minimum distance is in particular in a range up to 5 mm, preferably this is between 1 mm and 3 mm and more preferably about 2 mm.
  • a number N of first support means and on the inner contour of the outer housing a number N second support means are arranged.
  • a first support device cooperates with a respective second support device such that the outer contour and the inner contour-apart from the first and second support devices-have a predetermined minimum distance from each other at each point.
  • a first supporting device preferably cooperates with a second supporting device such that the arrangement has a main direction of action.
  • the number N results in particular from the design of the first and second support devices.
  • the number N of the support devices has the geometric design of the outer contour of the electric drive device and tool device and the geometric design of the outer housing.
  • the number N is a multiple of two and at least two.
  • first and second support means cooperate in order to transfer the support forces in preferably all spatial directions enable.
  • the number N can then also be an odd number.
  • the number N is preferably as small as possible in order to largely avoid the transmission of sound, heat and vibrations via the support devices from the electric drive unit or the tool device to the housing.
  • the first and second support devices are furthermore preferably arranged outside the grip area on the outer housing.
  • the inner contour is arranged in the grip region of the outer housing at a minimum distance from the outer contour of the drive elements of the machine tool and can preferably according to the elasticity of the outer housing in this area move relative to the outer contour, which in addition results in a certain mechanical decoupling of the grip portion of the drive elements. This also contributes to the improved handling comfort of the machine tool.
  • an edge region is arranged at the front end of the outer housing, which is preferably designed in the direction of the tool unit, but at the same time maintains a minimum distance between the outer housing and the outer contour of the tool device.
  • the edge region is designed such that it preferably serves both as a privacy screen and as a safety device which prevents the penetration of objects from the tool device. Such articles could lead to an impairment of the functioning of the machine tool and in particular to a transmission of vibration, sound or heat from the drive elements to the outer housing.
  • At least one is in each case between a first support device and a second support device
  • Power transmission element arranged, which transmits the supporting forces between a first and a second support means and at the same time holds the minimum distance between the outer contour and the inner contour.
  • the force transmission element arranged between a first and a second support device is subjected to a bias voltage in the installed state.
  • a bias is applied in particular in each direction in which a power transmission is provided.
  • a suitable bias of the power transmission element is in particular between 20% and 40%, preferably 35%. It may be desirable that the adhesion and thus the damping effect is different in different directions in space.
  • the first and second support means with a force transmission element arranged therebetween are preferably designed geometrically such that a different pretension of a force transmission element consisting of a homogeneous material is achieved in different spatial directions.
  • Such an effect can also be achieved by having a Force transmission element is used in different areas with different material properties, a different thickness or a shape, resulting in conjunction with the applied bias an inhomogeneous stress state in the power transmission element.
  • the force transmission element can also be designed in several parts or, for example, have recesses into which material can expand from an adjacent region in the prestressed state in order to relieve it or to reduce the prestress in the recessed region itself.
  • a material for a suitable power transmission element in particular a cellular polyurethane elastomer can be used which has a density of in particular between 0.35 and 0.65 kg / dm 3 and preferably 0.4 kg / dm 3 .
  • Such material in particular in conjunction with a suitable bias, is capable of transmitting supporting forces, such as the operator's guidance to the machine tool or the machining forces, from the machine tool to the user while increasing handling comfort.
  • a first support device in the support region is substantially concave and a second support device in the support region is substantially convex.
  • a first support device in the support region may be substantially convex and a second support device may be substantially concave in the support region. It is essential that the support region of a support device engages spatially in the support region of the other support means. Thus, it is also possible to support forces which act at an angle or even perpendicular to the engagement direction, which preferably corresponds to the direction of the forces to be mainly supported.
  • the support areas preferably have a coordinated spatial form, wherein the concave support area - when using a force transmission element - depending on the force transmission element is preferably formed geometrically larger in order to ensure a good power transmission and in particular to obtain the desired bias of the power transmission element.
  • Suitable shapes for the geometry of the support areas are, in particular, rotationally symmetrical basic bodies tapering on one side, such as ball sections (dome), truncated cones, sections of ellipsoidal body or the like.
  • a particularly good ratio between the geometrical dimensions of the support devices and the forces that can be transferred to them is achievable if a first support device in the support region is hollow-calotte-shaped and a second support device in the support region is dome-shaped.
  • a force transmission element arranged between a first and a second support device can already have a shape adapted to the later installation situation in the uninstalled state.
  • a power transmission element in the uninstalled state z. B. is flat and assumes a different shape by the bias in the installed state. This can result in a favorable influence on the formation of the bias within the power transmission element.
  • the power transmission element is formed flat in the uninstalled state and has a dish-like shape in the installed, prestressed state between a hollow dome-shaped first support region and a dome-shaped second support region.
  • it may be provided in its central region preferably with a recess such as a circular opening.
  • the hand-held machine tool has at least one first support device, which is arranged on the tool device or on the electric drive unit.
  • the drive elements of the machine tool in particular the electric drive unit and the tool device, are preferably designed such that they are essentially rigidly mounted relative to one another and with respect to this first support device.
  • Such a substantially rigid mounting of the drive devices to one another can in particular also be realized by means of an inner support frame.
  • a first support device which can be arranged in particular either on the tool device or on the electric drive unit, this is designed so that it can transmit forces in all directions in which forces act between the drive elements and the outer housing of the machine tool ,
  • the hand-held machine tool preferably has at least two first support devices, which preferably have a common axis or at least one common main direction of action, in particular if the design of the first and second support devices is substantially identical and, in particular, rotationally symmetrical.
  • a first support device cooperates with a second support device and the two thus form an arrangement of first and second support means.
  • a number N of effective first support means on the drive elements preferably corresponds to the number N of effective second support means on the outer housing.
  • the axis of the main direction of action of at least one arrangement of supporting devices runs through the axis of rotation of the electric drive unit.
  • forces with a direction of action in the direction in question lead a deflection of the machine tool substantially in a plane of the axis of rotation, are absorbed by the arrangement of support means.
  • the main direction of action of an arrangement of support devices extends in a plane perpendicular to the axis of rotation of the electric drive unit.
  • Such support devices can absorb forces whose direction of action extends essentially transversely to the axis of rotation of the electric drive unit and thus also lead to a deflection of the machine tool.
  • a pair of arrangements of support means symmetrical to the axis of rotation so that their common main direction of action extends through the axis of rotation of the electric drive unit.
  • their common main direction of action also runs simultaneously in a plane perpendicular to this axis of rotation.
  • an arrangement of support devices is preferred whose main direction of action is arranged askew to the axis of rotation of the electric drive unit.
  • a skew arranged arrangement of support means in a plane transverse to the direction of the axis of rotation or in a plane arranged at an angle to the axis of rotation plane.
  • At least one first support device is arranged in the region of a second end of the electric drive unit.
  • the second end of the electric drive unit is in a hand-held machine tool usually opposite the tool holder of the machine tool. This can be done in the region of the second end due to the leverage a particularly favorable absorption of supporting forces.
  • a first support device is preferably arranged in the region of the second end of the electric drive unit such that it has a common main direction of action with an operatively connected second support device, the axis of the common main direction of this arrangement
  • Supporting devices are preferably arranged in a plane perpendicular to the direction of the axis of rotation of the electric drive unit, and the axis of rotation intersects or runs obliquely thereto.
  • At least two arrangements of first and second support means are arranged as far as possible from each other.
  • at least one arrangement of first and second support means is arranged on the tool device and at least one other arrangement of first and second support means on the tool device opposite end of the electric drive unit.
  • About the at least one arrangement of first and second support means on the Tooling allows a good guidance of the machine tool by the user.
  • the at least one arrangement of first and second support means on the end of the electric drive unit opposite the tool means allows a sufficient connection of the electric drive unit to the outer housing and thus in conjunction with the arrangement of first and second support means on the tool unit to a sufficient transmission of the executives of User on the drive means of the machine tool.
  • At least one second supporting device is arranged on the outer housing in the working direction in front of the grip area.
  • the second support devices it is preferable for the second support devices to be arranged outside the gripping area on the outer housing, in order in particular to achieve a certain additional mechanical decoupling of the gripping area due to the elasticity of the outer housing.
  • the grip area is usually arranged in a lying close to the tool holder area, wherein it is particularly preferred that between the tool holder on the tool device and the handle portion on the outer housing - ie in the machine direction the grip area - a good support of the forces acting takes place.
  • At least one second support device on the outer housing in the working direction behind the gripping area, in particular to support such forces on the housing, which in particular cause a deflection of the hand-held machine tool about a pivot point arranged in front of or in the region of the gripping area.
  • this second acts Support device preferably together with a first support means, which is arranged on the electric drive unit, preferably at its second end.
  • the outer housing is formed from at least two shell components.
  • the dividing plane of at least two shell components of the outer housing preferably extends at least partially in a direction perpendicular to at least one effective axis of at least one, preferably two arrangements of first and second support means, so that forces which counteract the assembly of the outer housing are supported.
  • the at least two shell components of the outer housing are preferably connected in the region in which at least one second support means is arranged in the direction of the drive axis with each other in a form-locking and / or force-locking manner, preferably connected to one another by a screw connection.
  • Fig. 1 an exemplary hand-held machine tool according to the present invention
  • FIG. 2 shows the exemplary portable machine tool from FIG. 1 without the front outer housing half shell
  • FIG. 3 shows a three-dimensional representation of a first support device
  • FIG. 4 shows a horizontal section through the machine tool, according to the sectional profile IV-IV shown in FIG. 2;
  • FIG. 5 shows a vertical section through an exemplary machine tool, according to the sectional profile V-V drawn in FIG. 4; and 6 shows an enlarged view of a section through an arrangement of first and second support means, according to the detail VI drawn in FIG. 5.
  • Fig. 1 shows an exemplary hand-held machine tool 10 according to the present invention, which is designed in the embodiment as an oscillating machine tool.
  • the outer housing 12 has a defined inner contour and consists of two housing halves 21 and 22 together. Furthermore, the outer housing 12 has a gripping area 13, which the user grasps when guiding the machine tool.
  • the outer housing 12 encloses an electric drive device driving the machine tool as well as a region of the tool device 15, which furthermore projects forward out of the outer housing 12.
  • the tool device 15 has a drive shaft 16 driven in an oscillating manner about a drive axis 17, wherein the drive shaft 17 is pivoted downwards by 90 ° relative to the axis of rotation of the electric drive device which in the exemplary embodiment coincides with the longitudinal axis of the machine tool.
  • a tool holder 18 is arranged for receiving a suitable machining tool.
  • FIG. 2 shows the exemplary handheld machine tool 10 of FIG. 1, wherein the front half shell of the outer housing 12 is not shown.
  • the drive elements of the machine tool 10, in particular the electric drive device 14 as well as the tool device 15 fastened thereto by means of screw connections 25 to form a substantially rigid unit, can be seen in FIG.
  • the axis of rotation 11 of the electric drive device 14 coincides in the front region with the drawn sectional profile.
  • the further devices of the machine tool such as the control device, the power supply or operating elements, which are arranged predominantly in the rear region of the housing, are mechanically decoupled from the electric drive device 14 in order to prevent transmission of forces to the outer housing 12.
  • first support device 31 is arranged in the region which is accommodated in the outer housing 12.
  • Another first support device 32 is arranged in the rear region of the electric drive unit 14.
  • first support means 31 and 32 are arranged.
  • two first support devices 31 are arranged in front of the grip region 13 at the height of the axis of rotation of the electric drive device 14, which serve for transmitting the supporting forces from the tool device 15 to the outer housing 12.
  • two first supporting devices 32 are thus arranged at the side of the electric drive device 14 opposite the tool device 15 at a distance from the axis of rotation 11.
  • two first support devices 32 are arranged behind the handle region 13 at a distance from the axis of rotation 11 of the electric drive device 14, which serve for transmitting the supporting forces from the electric drive device 14 to the outer housing 12.
  • the two first support means 32 adapted to support the rotational axis 11 around acting torques relative to the outer housing 12.
  • FIG. 3 shows a three-dimensional representation of a first support device 31 on the tool device 15, wherein the geometry of the first support device 31 essentially corresponds to the geometry of the first support device 32 arranged on the electric drive device 14.
  • the first support means 31 is in the form of a - reinforced to the outside - rotationally symmetrical recess formed, which d in its end a Hohlkalottenform. H. has the shape of a hollow sphere section. By this shape, the support means 31 is adapted to transmit forces in a wide range of effective directions (see Fig. 6). 3, the axis of rotation of the geometry of the support device 31 is shown, which corresponds substantially to the main direction of action 40 of the support means 31 absorbable forces.
  • FIG. 4 shows a horizontal section through the machine tool, which extends along the sectional profile IV - IV shown in FIG. 2.
  • the cutting plane is arranged so that it passes through the first support means 31 and 32 and in the front region by the rotation axis 1 1 of the electric drive unit 14.
  • second support means 36 and 37 are arranged, which cooperate with the first support means 31 and 32 to hold the outer contour and the inner contour at a distance a, which corresponds at least to a minimum distance from each other.
  • the first support means 31 and 32 and the second support means 36 and 37 for cooperation with an interposed force transmission element 39 is formed, which is acted upon joining the two housing halves 21 and 22 with a bias voltage.
  • connection points 27a to 27d are in the region of the arrangements of first and second support means 31, 32 and 36, 37 positioned to achieve a force application of the force transmission elements 39 with a suitable bias voltage when using a power transmission element 39.
  • Fig. 4 can be clearly seen that the main action directions 40 of the two pairs of arrangements of first and second support means 31, 32 and 36, 37 respectively arranged in a plane transverse to the longitudinal axis of the machine tool and thus also to the axis of rotation 11 of the electric drive means 14 are.
  • FIG. 5 shows a vertical section through the machine tool arranged perpendicular to the axis of rotation of the electric drive device 14, which follows the course VV drawn in FIG. 4.
  • the two housing halves 21 and 22 of the outer housing 12 are detected only in the vertical central region of the cutting plane. Also in this figure, the distance a between the outer contour 19 on the tool device 15 and the inner contour 20 of the outer housing 12 is clearly visible.
  • the main direction of action 40 of the two arrangements of first and second support means 31 and 36 extends through the axis of rotation of the electric drive device 14.
  • FIG. 6, is an enlarged view of detail VI, described in more detail.
  • first support device 31 is designed in the form of a rotationally symmetrical depression, which in its end region is in the form of a hollow calotte having.
  • the second support means 36 is formed in the form of a rotationally symmetrical pin, which is formed according to dome-shaped in its end region.
  • the diameters D1 and D2 of recess and pin and the radii R1 and R2 of the dome and dome-shaped areas of depression and pin engaging therein Connection with the dimensions and material properties of the interposed force transmission element 39 coordinated so that the force transmission element 39 in the assembled state, ie at firmly interconnected Haibschalenhnet 21, 22 of the outer housing 12 in every possible direction in which a support of forces F, having the respective desired bias.
  • forces - at least up to a certain size - are transmitted by a frictional connection in the force transmission element 39, without the respective first and second support devices "going to block", ie a positive connection between the support devices 31 and 36 is formed.
  • first and second support devices 31, 32, 36, 37 between which a force transmission element 39 is arranged.
  • first support devices 31, 32 of FIGS. 1 to 3 can interact with correspondingly configured second support devices 36 and 37 without a force transmission element 39 being arranged between the support devices.
  • supporting forces and structure-borne noise, heat and vibrations are transmitted from the drive elements of the machine tool in the same way to the outer housing 12, as in the case of overcoming the internal friction forces of a used Force transmission element 39, ie in a "go to block" of first and second support means 31, 32, 36, 37.
  • the support forces on the first and second support means 31, 32, 36, 37 against the Outer housing 12 is supported, wherein the outer housing 12 is decoupled due to the minimum distance a of the electric drive unit 14 and the tool device 15 in particular with respect to structure-borne noise, heat and vibration of these devices.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sawing (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Machine Tool Units (AREA)
  • Portable Power Tools In General (AREA)

Abstract

Machine-outil (10) portable dotée d'un boîtier externe (12) s'étendant sensiblement le long d'un axe longitudinal et présentant une zone de préhension (13) qui permet à l'utilisateur de saisir la machine-outil (10) avec la main et de la guider, d'une unité d'entraînement (14) électrique logée dans le boîtier externe (12) et d'un porte-outil (15) qui est couplé de manière sensiblement rigide à l'unité d'entraînement (14) électrique. Le boîtier externe (12) de la machine-outil (10) présente un contour interne (20) défini et l'unité d'entraînement (14) électrique présente avec le porte-outil (15) un contour externe (19) défini. Le contour externe (19) et le contour interne (20) du boîtier externe (12) présentent un espacement minimal défini l'un par rapport à l'autre. Cet espacement minimal est maintenu au moyen d'un nombre N de premiers dispositifs d'appui (31) contre le contour externe (19) et d'un nombre N de deuxièmes dispositifs d'appui contre le contour interne (20), les premiers dispositifs d'appui (31) et les deuxièmes dispositifs d'appui coopérant pour maintenir cet espacement minimal entre le contour externe (19) et le contour interne (20).
EP13718304.2A 2012-04-24 2013-04-22 Machine-outil portable dotée d'un boîtier externe Active EP2841236B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012103587A DE102012103587A1 (de) 2012-04-24 2012-04-24 Handführbare Werkzeugmaschine mit Außengehäuse
PCT/EP2013/001204 WO2013159901A1 (fr) 2012-04-24 2013-04-22 Machine-outil portable dotée d'un boîtier externe

Publications (2)

Publication Number Publication Date
EP2841236A1 true EP2841236A1 (fr) 2015-03-04
EP2841236B1 EP2841236B1 (fr) 2021-01-06

Family

ID=48182883

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13718304.2A Active EP2841236B1 (fr) 2012-04-24 2013-04-22 Machine-outil portable dotée d'un boîtier externe

Country Status (6)

Country Link
US (1) US10040187B2 (fr)
EP (1) EP2841236B1 (fr)
CN (1) CN104245239B (fr)
DE (1) DE102012103587A1 (fr)
DK (1) DK2841236T3 (fr)
WO (1) WO2013159901A1 (fr)

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DE102013212714B4 (de) 2013-06-28 2024-09-26 Robert Bosch Gmbh Handwerkzeugmaschinenantriebsvorrichtung
DE102014103856A1 (de) 2014-03-20 2015-09-24 C. & E. Fein Gmbh Handwerkzeug mit einem Außengehäuse und einem Innengehäuse
DE102014103854A1 (de) 2014-03-20 2015-09-24 C. & E. Fein Gmbh Handwerkzeug mit einer Lüftereinheit
DE202014009989U1 (de) 2014-12-17 2015-01-16 Robert Bosch Gmbh Oszillationswerkzeugmaschine
JP6849307B2 (ja) * 2015-02-02 2021-03-24 株式会社マキタ 作業工具
CN105835012B (zh) 2015-02-02 2020-08-21 株式会社牧田 作业工具
WO2016127930A1 (fr) * 2015-02-15 2016-08-18 苏州宝时得电动工具有限公司 Outil électrique
CN205497401U (zh) * 2015-02-15 2016-08-24 苏州宝时得电动工具有限公司 动力工具
WO2017121366A1 (fr) * 2016-01-14 2017-07-20 苏州宝时得电动工具有限公司 Outil électrique
JP6727828B2 (ja) * 2016-02-05 2020-07-22 株式会社マキタ 動力工具
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DK2841236T3 (da) 2021-04-06
CN104245239B (zh) 2016-10-12
US20150034347A1 (en) 2015-02-05
DE102012103587A1 (de) 2013-10-24
CN104245239A (zh) 2014-12-24
EP2841236B1 (fr) 2021-01-06
US10040187B2 (en) 2018-08-07

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