WO2013084655A1 - Outil électrique - Google Patents

Outil électrique Download PDF

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Publication number
WO2013084655A1
WO2013084655A1 PCT/JP2012/078951 JP2012078951W WO2013084655A1 WO 2013084655 A1 WO2013084655 A1 WO 2013084655A1 JP 2012078951 W JP2012078951 W JP 2012078951W WO 2013084655 A1 WO2013084655 A1 WO 2013084655A1
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WO
WIPO (PCT)
Prior art keywords
tool
region
axis direction
grip
rotor
Prior art date
Application number
PCT/JP2012/078951
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English (en)
Japanese (ja)
Inventor
梅村　新吾
Original Assignee
株式会社マキタ
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 株式会社マキタ filed Critical 株式会社マキタ
Publication of WO2013084655A1 publication Critical patent/WO2013084655A1/fr

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Classifications

    • 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
    • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
    • B24B23/028—Angle tools
    • 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

Definitions

  • the present invention relates to an electric tool that performs a predetermined machining operation on a workpiece by rotating a tip tool with a motor.
  • Japanese Patent Application No. 2011-267187 filed on December 6, 2011 is used as a reference for related applications, and the entire contents thereof are used as a reference by reference.
  • Japanese Patent Laid-Open No. 2006-150571 discloses an electric disc grinder that performs a grinding operation such as grinding / polishing of a workpiece by rotating a grindstone as a tip tool with a motor.
  • the disc grinder described in the publication employs a configuration in which a grindstone is driven using an outer rotor type motor in which a stator is disposed on the inner side and a rotor is disposed on the outer side.
  • the frame internally fixes the stator of the motor and rotatably supports the rotor via a bearing. Further, the frame has a grip for an operator to hold in an intersecting manner with respect to the rotation axis of the motor from the motor support region.
  • the disc grinder described in the above publication has a structure in which a grip is integrated or integrated with a frame. For this reason, the vibration caused by the driving of the grindstone generated during the machining operation or the vibration accompanying the machining of the workpiece is transmitted to the grip, and there is still room for improvement in terms of ease of use.
  • the present invention has been made in view of the above, and an object thereof is to provide an electric tool that contributes to improvement in usability of a grip held by an operator.
  • an electric tool that performs a predetermined machining operation on a workpiece by rotation of a tip tool.
  • the electric tool has a work area in which a motor having a rotor for rotationally driving the tip tool, and a tool rotating shaft for mounting the tip tool are arranged coaxially with the rotor of the motor. Have. Moreover, it has a grip area for an operator to hold. Furthermore, an elastic member is disposed between the work area and the grip area.
  • a “tip tool drive mechanism” is mainly composed of a motor and a tool rotating shaft, and the “working area” in the present invention is a concept including a “housing” for accommodating the “tip tool drive mechanism”. It is.
  • the “elastic member” in the present invention typically corresponds to rubber, but preferably includes a spring.
  • the grip area held by the operator is connected to the work area via an elastic member.
  • the elastic member does not block the vibration generated in the work area and transmitted from the work area to the grip area. To reduce. Thereby, the usability of the grip can be improved.
  • the rotor and the tool rotating shaft are united.
  • integrated is defined as a mode of rotating integrally, a mode in which a tool rotation shaft is press-fitted and directly connected to a rotor, and is connected via an intermediate member such as a coupling. Or an integrally formed embodiment.
  • the working area, in particular, the “housing” can be reduced in size and weight compared to the configuration in which the power transmission member is interposed in the middle. It becomes effective in.
  • the elastic member is configured to receive at least a compressive load in each of the two directions of the major axis direction of the tool rotation axis and the direction intersecting the major axis direction.
  • the elastic member elastically connects the two regions in a state where it receives a compressive load in each of the two directions of the major axis direction of the tool rotation axis and the direction intersecting with the major axis direction.
  • the elastic member is compared with a configuration in which the two regions are elastically connected in a state of receiving a compressive load in one of the two directions and receiving only a shear load in the other direction.
  • the rigidity in the direction of the long axis of the tool rotation axis and the rigidity in the direction crossing the long axis direction of the tool rotation axis can be set to the same level. The operability can be improved.
  • the elastic member has a first region that receives a compressive load in the major axis direction of the tool rotating shaft and a second region that receives a compressive load in a direction intersecting the major axis direction of the tool rotating shaft.
  • the first region and the second region are integrally formed with each other.
  • “integrally formed” means an aspect in which the first region and the second region are integrally molded, and the first region and the second region are separately molded and then integrated. Is also included.
  • the number of elastic members is reduced compared to the case where the first region and the second region are configured separately, and the handling of the first region and the second region is reduced. Simplification can be achieved.
  • the tool rotating shaft can be attached with a tip tool on one end side in the long axis direction.
  • the grip area is defined by an axial area formed on the opposite side of the tip tool with respect to the work area in the major axis direction of the tool rotation axis, and a work area in a direction intersecting the major axis direction of the tool rotation axis. It has a radial region formed on the outside. The elastic member is disposed in an intervening manner between the axial region and the working region and between the radial region and the working region.
  • the work area and the grip area can be elastically connected by the elastic member in a state in which a compressive load is received in each of the two directions of the long axis direction of the tool rotation axis and the direction intersecting the long axis direction.
  • the work area is attached to a predetermined portion of the grip area in a fitting manner
  • the elastic member is at least one of the work areas in the fitting portion between the work area and the grip area. It arrange
  • the work area, the grip area, and the elastic member have a fitting structure in which the work area, the grip area, and the elastic member are fitted to each other.
  • the motor is an outer rotor type motor having a stator and a rotor arranged outside the stator.
  • the outer rotor type motor in which the outer rotor rotates is used, the outer diameter of the rotating portion of the motor can be increased, and the motor can have a large rotor inertia moment. .
  • a big torque can be generate
  • the grip region is formed in a long shape, and is arranged so that the long direction intersects the long axis direction of the tool rotation axis. According to this aspect, there is provided an angle type electric tool in which the tool rotation axis and the grip region intersect each other.
  • an electric tool that contributes to improving the usability of a grip held by an operator is provided.
  • FIG. 1 is a partially cut side view showing an overall configuration of an electric disc grinder according to an embodiment of the present invention. It is an enlarged view of the drive mechanism part of an electric disc grinder.
  • FIG. 2 is a sectional view taken along line AA in FIG. 1.
  • the electric disc grinder 101 (hereinafter, referred to as a disc grinder) generally includes an outer shell of the disc grinder 101 and a main body housing 103 held by an operator.
  • the main body housing 103 is configured as a substantially cylindrical member extending in a long shape, and a substantially cylindrical gripping portion 103A in which an intermediate region in the long axis direction (extending direction) is gripped by fingers of an operator. Is set as The grip portion 103A is formed with a thickness that is easy for an operator to grip with one hand.
  • a disc-shaped grindstone 125 is attached to one end (tip region) in the long axis direction of the main body housing 103 via a spindle 121 and serves as a power source for the drive motor 111 at the other end in the long axis direction.
  • a rechargeable battery pack 110 incorporating a plurality of battery cells is detachably attached.
  • the main body housing 103 corresponds to the “grip region” in the present invention, and the drive motor 111 is an example of an implementation configuration corresponding to the “motor” in the present invention.
  • the spindle 121 corresponds to the “tool rotation axis” in the present invention, and the grindstone 125 is an example of an implementation configuration corresponding to the “tip tool” in the present invention.
  • the grindstone 125 side in the major axis direction of the main body housing 103 is defined as “front side” or “front side”, and the battery pack 110 side is defined as “rear side” or “rear side”. It prescribes as 1 is defined as “upper side” or “upper side”, and the lower side of the page is defined as “lower side” or “lower side”.
  • the main body housing 103 is divided along the long axis direction, and the divided left and right housing constituent members are joined to each other with screws or the like to constitute a substantially cylindrical member.
  • One end portion in the major axis direction of the main body housing 103 is set as a hollow hemispherical drive mechanism housing portion 103B that is open at the bottom, and an inner housing 105 is housed in the drive mechanism housing portion 103B.
  • a drive mechanism 113 for a grindstone 125 which is mainly composed of a drive motor 111 and a spindle 121 that is rotationally driven by the drive motor 111, is disposed. That is, the inner housing 105 constitutes an area for disposing the drive mechanism 113 of the grindstone 125, and is an example of an implementation configuration corresponding to the “working area” in the present invention.
  • the internal space of the main body housing 103 is used for routing electrical wiring (not shown for convenience) for supplying the power of the battery cell to the drive motor 111.
  • a trigger 104 as an operation member that can be pulled with fingers is provided on the grip portion 103 ⁇ / b> A of the main body housing 103.
  • the drive motor 111 is energized, and when the trigger 104 is released and returned to the initial position, the drive motor 111 is turned on. Configured to be stopped.
  • the drive motor 111 is configured as an outer rotor type motor in which a stator 115 is disposed on the inner side and a rotor 117 is disposed on the outer side.
  • the drive motor 11 is disposed in the inner housing 105 so that the major axis (rotating axis) direction of the rotor 117 is the vertical direction intersecting the major axis direction of the main body housing 103.
  • the stator 115 includes a drive coil 116 for driving the rotor 117 and has a hole in the center.
  • the stator 115 is made non-rotatable with respect to the inner housing 105 by fitting the hole into a cylindrical portion 105a that projects linearly downward from a substantially central portion of the wall surface of the upper wall of the inner housing 105.
  • the rotor 117 is formed as a substantially cup-shaped member having a magnet 118 attached to the inner peripheral surface.
  • the magnet 118 is opposed to the outer periphery of the stator 115.
  • a cylindrical boss portion 117a is formed on the bottom portion of the rotor 117 so as to protrude downward with a predetermined length.
  • the rotor 117 is fixed to the spindle 121 press-fitted into the cylindrical hole of the boss portion 117a. That is, the rotor 117 and the spindle 121 are arranged coaxially with each other and are directly connected. Thus, the spindle 121 is arranged substantially orthogonal to the major axis direction of the main body housing 103.
  • the angle-type disc grinder 101 is configured in which the rotational axis direction of the grindstone 125 is arranged to intersect the major axis direction of the main body housing 103.
  • a cooling fan 119 is fitted and fixed to the outside of the boss 117a of the rotor 117 below the rotor 117. The cooling fan 119 rotates integrally with the rotor 117 to generate an air flow that flows from the upper side to the lower side in the inner housing 105.
  • the cooling fan 119 mainly cools the drive motor 111 by this air flow.
  • the spindle 121 passes through the boss portion 117a of the rotor 117, and further passes through the cylindrical portion 105a of the inner housing 105 in a loose fit.
  • the spindle 121 extends upward, and an upper end portion of the spindle 121 is rotatably supported by the inner housing 105 via a bearing 131.
  • the spindle 121 is rotatably supported by the inner housing 105 via a bearing 133 below the cooling fan 119.
  • the spindle 121 is supported on both sides in the long axis direction by the upper and lower bearings 131 and 133.
  • a rotor 117 and a cooling fan 119 are disposed between the upper and lower bearings 131 and 133 of the spindle 121. For this reason, the rotation operation of the rotor 117 and the cooling fan 119 is stabilized.
  • the spindle 121 passes through the lower bearing 133 and extends further downward.
  • the spindle 121 protrudes from the lower surface of the inner housing 105 to the outside by a predetermined length, and the protruding end portion is set as a grindstone mounting portion 121 a for attaching the grindstone 125.
  • the grindstone 125 is detachably attached to the grindstone attachment portion 121a by a tool holder 127 including two inner and outer flange members 127a and 127b arranged to face each other, and is rotated integrally with the spindle 121.
  • a part of the inner housing 105 protrudes downward from the lower surface of the drive mechanism housing portion 103B of the main body housing 103, and a grindstone cover 129 is attached to the protruding portion.
  • the grindstone cover 129 covers the latter half of the grindstone 125, and prevents grinding powder and the like generated during the machining operation from being scattered backward.
  • the inner housing 105 accommodated in the drive mechanism accommodating portion 103B is formed in a substantially cylindrical shape by joining upper and lower housing constituent members 105A and 105B divided in two in the vertical direction (long axis direction of the spindle 121). It is configured as a cylindrical member.
  • two upper and lower vibration isolating rubbers 135 and 137 are disposed in an intervening manner.
  • the anti-vibration rubbers 135 and 137 block or reduce vibration transmitted from the inner housing 105 to the main body housing 103.
  • the anti-vibration rubbers 135 and 137 correspond to “elastic members” in the present invention.
  • the upper anti-vibration rubber 135 is formed in a substantially downward cup shape, and is fitted from above so as to cover the outside of the upper region of the inner housing 105 (upper housing constituent member 105A).
  • a plurality of lateral ribs 141 projecting in the radial direction are formed in the vertical direction (long axis direction) on the peripheral wall surface.
  • a plurality of longitudinal ribs 143 projecting downward in the long axis direction are formed on the upper wall surface of the inner wall surface of the drive mechanism housing portion 103B of the main body housing 103 in the radial direction.
  • the cap-shaped upper anti-vibration rubber 135 is sandwiched and fixed between the protruding end surfaces of the horizontal rib 141 and the vertical rib 143 and the outer wall surface (the peripheral wall surface and the upper wall surface) of the inner housing 105.
  • the lower region (lower housing component 105B) of the inner housing 105 is formed in a stepped cylindrical shape having a large diameter on the upper side and a small diameter on the lower side in the major axis direction.
  • the lower vibration-proof rubber 137 is formed in an annular shape.
  • the lower anti-vibration rubber 137 is fitted to the small-diameter portion of the lower housing component member 105 ⁇ / b> B, and a step 145 corresponding to the boundary surface between the small-diameter portion and the large-diameter portion, and the main body housing 103. It is sandwiched and fixed from above and below with an inwardly extending portion 147 formed at the lower portion of the drive mechanism housing portion 103B.
  • the inner housing 105 is attached to the drive mechanism housing portion 103 ⁇ / b> B of the main body housing 103 in a fitting manner with the upper and lower vibration isolating rubbers 135 and 137 interposed therebetween.
  • the drive mechanism housing portion 103B is an example of an implementation configuration corresponding to the “predetermined portion” in the present invention.
  • the upper wall portion including the vertical rib 143 that faces the upper wall portion of the inner housing 105 in the drive mechanism housing portion 103B corresponds to the “axial region” in the present invention and faces the peripheral wall portion of the inner housing 105.
  • the peripheral wall portion including the transverse rib 141 is an example of an implementation configuration corresponding to the “radial region” in the present invention.
  • the vertical rib 143 of the drive mechanism housing portion 103B and the inner housing 105 are input.
  • the lower circular ring sandwiched between the disc part 135a of the upper cup-shaped anti-vibration rubber 135 sandwiched by the upper wall surface, the step part 145 of the inner housing 105 and the overhanging part 147 of the drive mechanism housing part 103B.
  • One of the anti-vibration rubber 137 compresses and deforms to absorb or reduce the force in the long axis direction.
  • an upward force directed from the grindstone 125 toward the drive motor 111 is dealt with by compressing and deforming the disc portion 135a of the upper cup-shaped anti-vibration rubber 135.
  • the downward force toward the side is dealt with by compressing and deforming the lower annular vibration-proof rubber 137.
  • the disc portion 135a and the annular vibration-proof rubber 137 correspond to the “first region” in the present invention, and the body portion 135b is an example of an implementation configuration corresponding to the “second region” in the present invention.
  • the disc grinder 101 is configured as described above. Accordingly, if the gripping portion 103A of the main body housing 103 is gripped by hand, the trigger 104 attached to the gripping portion 103A is pulled and the drive motor 111 is energized to drive the grindstone together with the spindle 121 directly connected to the rotor 117. 125 is driven to rotate. For this reason, it is possible to perform processing operations such as grinding, polishing operation or cutting operation of the workpiece.
  • the inner housing 105 when vibration is generated in the drive mechanism 113 of the grindstone 125 due to driving of the grindstone 125 or grinding / polishing of the workpiece with the grindstone 125 during the machining operation, the inner housing 105 Then, the vibration of the drive mechanism 113 transmitted to the main body housing 103 side can be cut off or reduced by compressive deformation of the anti-vibration rubbers 135 and 137. Accordingly, it is possible to improve the usability of the gripping portion 103A when gripping the gripping portion 103A of the main body housing 103 and performing a processing operation.
  • the vibration isolating rubber receives a compressive load in one of the major axis direction and the radial direction, and receives a shear load in the other direction.
  • the vibration-proof rubber has a relationship that the shearing rigidity is lower than the compression rigidity, so that there is a problem that the gripping region is likely to wobble in the direction of receiving the shear load.
  • the main body housing 103 having the grip portion 103A and the inner housing 105 that houses the drive mechanism 113 of the grindstone 125 including the drive motor 111 are arranged in two directions, ie, the major axis direction and the radial direction of the spindle 121.
  • Each direction is elastically connected in such a way as to receive a compressive load by the anti-vibration rubbers 135 and 137.
  • the anti-vibration rubbers 135 and 137 it is possible to set the anti-vibration rubbers 135 and 137 so as to have the same degree of rigidity in each of the two directions of the major axis direction and the radial direction of the spindle 121.
  • the upper anti-vibration rubber 135 is formed in a downward cup shape with the lower part opened, and the drive mechanism housing portion 103B of the main body housing 103 and the inner housing 105 housing the drive mechanism 113 are formed. In the meantime, the upper anti-vibration rubber 135 is interposed in a fitting manner. Therefore, when the left and right housing constituent members of the main body housing 103 are joined and assembled so that the inner housing 105 is positioned in the drive mechanism housing portion 103B of the main body housing 103, a cup-shaped vibration-proof rubber 135 can be disposed in advance so as to cover the inner housing 105 from above. As a result, the assembly work of the main body housing 103 and the inner housing 105 can be easily performed.
  • the disc portion 135a that receives the compression load in the major axis direction of the spindle 121 and the body portion 135b that receives the compression load in the radial direction are integrally formed. can do. As a result, the number of parts is reduced and the handling is easy as compared with the case where the disc part 135a and the body part 135b are formed separately.
  • an outer rotor type motor in which the outer rotor 117 rotates is adopted as the drive motor 111.
  • the outer diameter of the rotating part of the drive motor 111 can be formed large, and the drive motor 111 can have a large rotor inertia moment.
  • the disc grinder 101 of the present embodiment can generate a larger torque than the disc grinder that employs the inner rotor type motor. Accordingly, it is possible to employ a configuration in which the spindle 121 is directly connected to the rotor 117.
  • the work area in particular, the inner housing 105 can be reduced in size and weight.
  • the grip portion 103A of the main body housing 103 can be designed to be easily gripped, so that operability can be improved.
  • the vibration isolating rubber 135, 137 is used as the elastic member.
  • the vibration isolating rubber 135, 137 may be changed to a spring.
  • the lower anti-vibration rubber 137 may be formed in a cup shape similar to the upper anti-vibration rubber 135.
  • the disc part 135a and the body part 135b may be formed separately for the upper cup-shaped vibration-proof rubber 135.
  • the main body housing 103 and the inner housing 105 may be elastically coupled so as to receive a compressive load in the circumferential direction of the spindle 121.
  • the main body housing 103 is an example of a configuration corresponding to the “grip region” of the present invention.
  • the drive motor 111 is an example of a configuration corresponding to the “motor” of the present invention.
  • the spindle 121 is an example of a configuration corresponding to the “tool rotation axis” of the present invention.
  • the grindstone 125 is an example of a configuration corresponding to the “tip tool” of the present invention.
  • the inner housing 105 is an example of a configuration corresponding to the “working area” of the present invention.
  • the anti-vibration rubbers 135 and 137 are an example of a configuration corresponding to the “elastic member” of the present invention.
  • the drive mechanism housing portion 103B is an example of a configuration corresponding to the “predetermined portion” of the present invention.
  • the upper wall portion including the vertical ribs 143 facing the upper wall portion of the inner housing 105 in the drive mechanism housing portion 103B is an example of a configuration corresponding to the “axial region” of the present invention.
  • the peripheral wall portion including the lateral rib 141 facing the peripheral wall portion of the inner housing 105 is an example of a configuration corresponding to the “radial region” of the present invention.
  • the disc part 135a is an example of a configuration corresponding to the “first region” of the present invention.
  • the annular vibration-proof rubber 137 is an example of a configuration corresponding to the “first region” of the present invention.
  • the body portion 135b is an example of a configuration corresponding to the “second region” of the present invention.
  • the working tool according to the present invention can be configured in the following manner.
  • (Aspect 1) A power tool that performs a predetermined processing operation on a workpiece by rotating the tip tool, A motor that has a rotor and a stator and that drives the tip tool to rotate, and is arranged coaxially with the rotation axis of the rotor and a tool rotation axis for mounting the tip tool.
  • Working area A grip area for the operator to hold, An elastic member disposed in an intervening manner between the work area and the grip area;
  • a power tool having " (Aspect 2) The power tool according to the first aspect, The power tool, wherein the rotor and the tool rotation shaft are integrated.
  • the elastic member elastically connects the work area and the grip area to each other in a mode that receives at least a compressive load in each of two directions of the major axis direction of the tool rotation axis and the direction intersecting the major axis direction.
  • An electric tool characterized by having " (Aspect 4) “The power tool according to the third aspect, The elastic member includes a first region that receives a compressive load in a major axis direction of the tool rotation axis, and a second region that receives a compressive load in a direction intersecting the major axis direction of the tool rotation axis, A power tool characterized in that the first region and the second region are formed integrally with each other.
  • the power tool according to the third aspect is the aspect which receives the compressive load about the circumferential direction of the said tool rotating shaft, The said working area
  • region are mutually elastically connected, The electric tool characterized by the above-mentioned.
  • the tool rotation shaft is capable of mounting the tip tool on one end side in the long axis direction, In the major axis direction of the tool rotation axis, the grip region is an axial region formed on the opposite side of the tip tool with respect to the work area, and in a direction intersecting the major axis direction of the tool rotation axis, Having a radial region formed outside the working region;

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Power Tools In General (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

Le problème décrit par la présente invention est de proposer un outil électrique qui contribue à l'amélioration de l'aptitude à l'emploi d'une poignée tenue par un opérateur. La solution selon l'invention porte sur un outil électrique pour réaliser un travail d'usinage prédéterminé sur un objet d'usinage par la rotation d'un outil à extrémité distale (125), l'outil électrique comprenant une zone de travail (105) dans laquelle sont disposés un moteur (111) ayant un rotor (117) pour entraîner en rotation l'outil à extrémité distale (125), et un arbre de rotation d'outil (121) disposé de manière coaxiale avec le rotor (117) du moteur (111) et sur lequel est monté l'outil à extrémité distale (125). L'outil électrique a également une zone de prise (103) pour permettre la saisie par l'opérateur. Des éléments élastiques (135, 137) sont intercalés entre la zone de travail (105) et la zone de prise (103).
PCT/JP2012/078951 2011-12-06 2012-11-08 Outil électrique WO2013084655A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011-267187 2011-12-06
JP2011267187A JP2013119129A (ja) 2011-12-06 2011-12-06 電動工具

Publications (1)

Publication Number Publication Date
WO2013084655A1 true WO2013084655A1 (fr) 2013-06-13

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WO (1) WO2013084655A1 (fr)

Cited By (4)

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WO2015018557A1 (fr) 2013-08-09 2015-02-12 Robert Bosch Gmbh Machine-outil portative à entraînement direct par moteur électrique
EP3208049A1 (fr) * 2016-02-19 2017-08-23 Makita Corporation Outil de travail
EP2998073B1 (fr) * 2014-09-10 2018-09-19 Robert Bosch Gmbh Machine-outil portative fonctionnant sur batterie ayant au moins une partie de carter moteur
WO2020244874A1 (fr) * 2019-06-04 2020-12-10 Robel Bahnbaumaschinen Gmbh Appareil de tronçonnage par abrasion et procédé pour sectionner un rail d'une voie

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DE102013210962B4 (de) * 2013-06-12 2016-08-04 Robert Bosch Gmbh Handwerkzeugmaschine mit einem elektromotorischen Antrieb und mindestens einem ersten Gehäuseteil
DE102014211615A1 (de) 2014-06-17 2015-12-17 Robert Bosch Gmbh Handwerkzeugmaschine mit elektronisch kommutiertem Elektromotor als Direktantrieb
JP6408870B2 (ja) * 2014-11-05 2018-10-17 株式会社マキタ 電動工具
JP6849307B2 (ja) * 2015-02-02 2021-03-24 株式会社マキタ 作業工具
JP6639883B2 (ja) * 2015-02-23 2020-02-05 株式会社マキタ 加工機及び電動モータ
JP6621641B2 (ja) * 2015-10-15 2019-12-18 株式会社マキタ 電動工具
JP6703417B2 (ja) * 2016-02-19 2020-06-03 株式会社マキタ 作業工具
JP6795309B2 (ja) * 2016-02-19 2020-12-02 株式会社マキタ 作業工具
US11396078B2 (en) 2019-06-10 2022-07-26 Makita Corporation Grinder
JP7412187B2 (ja) * 2019-06-10 2024-01-12 株式会社マキタ グラインダ
JPWO2020250716A1 (fr) * 2019-06-14 2020-12-17
JP7458162B2 (ja) * 2019-09-26 2024-03-29 株式会社マキタ グラインダ
WO2023243359A1 (fr) * 2022-06-16 2023-12-21 工機ホールディングス株式会社 Machine de travail

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WO2015018557A1 (fr) 2013-08-09 2015-02-12 Robert Bosch Gmbh Machine-outil portative à entraînement direct par moteur électrique
EP3296065A1 (fr) 2013-08-09 2018-03-21 Robert Bosch GmbH Machine-outil portative à entraînement électromotorique en tant qu'entraînement direct
US10730175B2 (en) 2013-08-09 2020-08-04 Robert Bosch Gmbh Portable power tool having an electromotive direct drive
EP3689553A1 (fr) 2013-08-09 2020-08-05 Robert Bosch GmbH Machine-outil portative à entraînement électromotorique en tant qu'entraînement direct
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EP3936284A1 (fr) 2013-08-09 2022-01-12 Robert Bosch GmbH Machine-outil portative dotée d'un entraînement électromoteur en tant qu'entraînement direct
EP2998073B1 (fr) * 2014-09-10 2018-09-19 Robert Bosch Gmbh Machine-outil portative fonctionnant sur batterie ayant au moins une partie de carter moteur
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US20220032420A1 (en) * 2019-06-04 2022-02-03 Robel Bahnbaumaschinen Gmbh Abrasive cutter and method for cutting through a rail of a track
CN113840690A (zh) * 2019-06-04 2021-12-24 罗贝尔铁路建筑机械有限责任公司 用于切穿轨道的铁轨的研磨切割机及方法
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