WO2007058321A1 - Dispositif pour basculer le sens de rotation d'un outil électrique - Google Patents

Dispositif pour basculer le sens de rotation d'un outil électrique Download PDF

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Publication number
WO2007058321A1
WO2007058321A1 PCT/JP2006/323014 JP2006323014W WO2007058321A1 WO 2007058321 A1 WO2007058321 A1 WO 2007058321A1 JP 2006323014 W JP2006323014 W JP 2006323014W WO 2007058321 A1 WO2007058321 A1 WO 2007058321A1
Authority
WO
WIPO (PCT)
Prior art keywords
contact
brush base
protrusion
motor
base
Prior art date
Application number
PCT/JP2006/323014
Other languages
English (en)
Japanese (ja)
Inventor
Shuji Yoshikawa
Hironori Ogura
Original Assignee
Makita Corporation
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 Makita Corporation filed Critical Makita Corporation
Publication of WO2007058321A1 publication Critical patent/WO2007058321A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
    • H02K23/66—Structural association with auxiliary electric devices influencing the characteristic of, or controlling, the machine, e.g. with impedances or switches
    • 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
    • B25F5/001—Gearings, speed selectors, clutches or the like specially adapted for rotary tools
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/14—Means for supporting or protecting brushes or brush holders
    • H02K5/143—Means for supporting or protecting brushes or brush holders for cooperation with commutators
    • H02K5/148—Slidably supported brushes
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • H02K5/225—Terminal boxes or connection arrangements

Definitions

  • the present invention relates to a rotation direction switching device provided in an electric tool driven by a motor for switching the rotation direction of the motor.
  • a rotation direction switching device for an electric tool is fixed to a motor stator in a housing, and has a unit base provided with a pair of fixed contacts that are electrically connected to stator coils, and a rectifier.
  • a ring-shaped brush base that holds a pair of slidable carbon brushes and is rotatably assembled to the unit base.
  • Each of the brush bases is provided with a pair of movable contacts located between fixed contacts. .
  • the brush base is manually rotated, so that the contact / separation speed between the contacts where the operation speed of the brush base is constant is increased or decreased.
  • contact welding may occur if the operation speed is slow, leading to a reduction in contact life.
  • It is possible to assist the switching by providing a panel that urges the brush base in the rotational direction.However, since the brush base is directly operated manually, the uneven operation speed is not eliminated and the effect on the contact life is affected. Will remain.
  • one of the useful aspects of the present invention is that the rotating direction switching device for an electric tool that can always improve the contact life by keeping the contact / separation speed between the contact points regardless of the operation speed by the user constant. Is to provide.
  • an apparatus capable of switching the rotation direction of a motor mechanically coupled to a tip tool of an electric tool
  • a first contact and a second contact electrically connected to the motor coil are provided.
  • the brush base is moved manually between a second position for rotating the motor in a second direction opposite to the first direction by contacting the second contact.
  • the brush base when the brush base is disposed at a neutral position where the third contact is separated from both the first contact and the second contact, the third contact, the first contact, and the second contact Provided on the brush base to be positioned between each of the two contacts,
  • Each of the first contact and the second contact has an elastically deformable portion including a curved portion, and the protrusion is configured such that the brush base is located between the neutral position, the first position, and the second position.
  • the first contact and the second contact When disposed between the first contact and the second contact in contact with the elastically deformable portion, the first contact and the second contact in a direction away from the third contact,
  • the brush base When the brush base is disposed at each of the first position and the second position, it is provided that at least a part of the protrusion is received by the curved portion.
  • An inclined surface may be formed on a part of the protrusion that can come into contact with the elastically deformable portion.
  • a device capable of switching the rotation direction of a motor mechanically coupled to a tip tool of an electric tool
  • a mute base provided with a first contact and a second contact electrically connected to the coil of the motor
  • the brush base can be moved manually between the second position for rotating the motor in the second direction opposite to the first direction.
  • the brush base when the brush base is disposed at a neutral position where the third contact is separated from both the first contact and the second contact, the third contact, the first contact, and the second contact Provided on the unit base so as to be positioned between each of the two contact points,
  • the third contact has an elastically deformable portion including a curved portion
  • the protrusion comes into contact with the elastically deformable portion and causes the third contact to be Deform in a direction away from each of the first contact and the second contact;
  • the brush base When the brush base is disposed at each of the first position and the second position, it is provided that at least a part of the protrusion is received by the curved portion.
  • An inclined surface may be formed on a part of the protrusion that can come into contact with the elastically deformable portion.
  • a device capable of switching the rotation direction of a motor mechanically coupled to a tip tool of an electric tool
  • a mute base provided with a first contact and a second contact electrically connected to the coil of the motor
  • the brush base is moved manually between a second position for rotating the motor in a second direction opposite to the first direction by contacting the second contact.
  • the brush base When the brush base is disposed at a neutral position where the third contact is separated from both the first contact and the second contact by the brush base, the third contact and the first contact And a second protrusion provided on the brush base so as to be adjacent to the third contact, and a second protrusion provided on the unit base so as to be positioned between the second contact and the second contact.
  • the third contact has an elastically deformable portion
  • the first protrusion comes into contact with the second protrusion, and the first protrusion and the second protrusion One of the protrusions deforms the third contact in a direction away from each of the first contact and the second contact.
  • the first protrusion deforms the third contact
  • the brush base is The second protrusion may deform the third contact when moving from one of the position and the second position to the neutral position.
  • an apparatus capable of switching the rotation direction of a motor mechanically coupled to a tip tool of an electric tool
  • a mute base provided with a first contact and a second contact electrically connected to the coil of the motor
  • the brush base is moved manually between a second position for rotating the motor in a second direction opposite to the first direction by contacting the second contact.
  • the brush base When the brush base is disposed at a neutral position where the third contact is separated from both the first contact and the second contact by the brush base, the third contact and the first contact And provided on the brush base so as to be positioned between each of the second contacts, and provided on the unit base so as to be adjacent to each of the first and second contacts.
  • Comprising a second protrusion Comprising a second protrusion
  • Each of the first contact and the second contact has an elastically deformable portion
  • the first protrusion contacts the second protrusion, and the third contact is the first contact.
  • One that deforms either the protrusion or the second protrusion in a direction away from the third contact is provided. Provided.
  • the first protrusion deforms one of the first contact and the second contact;
  • the second protrusion may deform either the first contact or the second contact when the brush base moves from either the first position or the second position to the neutral position.
  • an electric tool there is provided an electric tool
  • a tip tool provided at the front end of the housing
  • a mute base provided with a first contact and a second contact electrically connected to the coil of the motor
  • the brush base is moved between the second position that rotates the motor in the second direction opposite to the first direction, and can be manually operated from the outside of the housing.
  • the brush base is disposed at a neutral position where the third contact is separated from both the first contact and the second contact.
  • the third contact, the first contact, and the first contact Provided on the brush base to be positioned between each of the two contact points,
  • Each of the first contact and the second contact has an elastically deformable portion including a curved portion, and the protrusion is configured such that the brush base is located between the neutral position, the first position, and the second position.
  • the first contact and the second contact When disposed between the first contact and the second contact in contact with the elastically deformable portion, the first contact and the second contact in a direction away from the third contact, When the brush base is disposed at each of the first position and the second position, it is provided that at least a part of the protrusion is received by the curved portion.
  • a tip tool provided at the front end of the housing
  • a mute base provided with a first contact and a second contact electrically connected to the coil of the motor
  • the brush base is moved between the second position that rotates the motor in the second direction opposite to the first direction, and can be manually operated from the outside of the housing.
  • the brush base is disposed at a neutral position where the third contact is separated from both the first contact and the second contact.
  • the third contact, the first contact, and the first contact Provided on the unit base to be positioned between each of the two contacts,
  • the third contact has an elastically deformable portion including a curved portion
  • the protrusion comes into contact with the elastically deformable portion and causes the third contact to be Deform in a direction away from each of the first contact and the second contact;
  • the brush base When the brush base is disposed at each of the first position and the second position, it is provided that at least a part of the protrusion is received by the curved portion.
  • a mute base provided with a first contact and a second contact electrically connected to the coil of the motor
  • the brush base is moved between the second position that rotates the motor in the second direction opposite to the first direction, and can be manually operated from the outside of the housing.
  • the brush base When the brush base is disposed at a neutral position where the third contact is separated from both the first contact and the second contact, the brush base is connected to the third contact and the first contact. And provided on the unit base to be positioned between each of the second contacts,
  • a second protrusion provided on the brush base so as to be adjacent to the third contact
  • the third contact has an elastically deformable portion
  • the first protrusion comes into contact with the second protrusion, and the first protrusion and the second protrusion One of the protrusions deforms the third contact in a direction away from each of the first contact and the second contact.
  • an electric tool comprising:
  • a tip tool provided at the front end of the housing
  • a mute base provided with a first contact and a second contact electrically connected to the coil of the motor
  • the brush base is moved between the second position that rotates the motor in the second direction opposite to the first direction, and can be manually operated from the outside of the housing.
  • the brush base When the brush base is disposed at a neutral position where the third contact is separated from both the first contact and the second contact, the brush base is connected to the third contact and the first contact. And a second base provided on the unit base so as to be adjacent to each of the first contact and the second contact. Comprising a protrusion,
  • Each of the first contact and the second contact has an elastically deformable portion
  • the first protrusion contacts the second protrusion, and the third contact is the first contact.
  • a member that deforms either the protrusion or the second protrusion in a direction away from the third contact is provided.
  • the two contact points related to the rotational speed of the brush base that is directly operated can always be quickly turned on and off at a constant speed. Therefore, the possibility of causing contact welding is reduced, and an improvement in contact life can be expected.
  • the cost increase can be minimized.
  • FIG. 1 is a side view of an electric drill according to a first embodiment of the present invention.
  • FIG. 2 is an exploded perspective view of a rotation direction switching device in the electric drill.
  • FIG. 3A is a perspective view of the rotation direction switching device as viewed from the brush base side.
  • FIG. 3B is a perspective view of the rotation direction switching device as viewed from the unit base side.
  • FIG. 4A is a perspective view showing a state where the unit base is removed in FIG. 3B.
  • FIG. 4B is an enlarged view of the IVB portion in FIG. 4A.
  • FIG. 5A is a plan view showing the brush base in a neutral position.
  • FIG. 5B is a perspective view showing the brush base that has started to move to the neutral position force forward rotation operation position.
  • FIG. 5C is an enlarged view of the VC portion in FIG. 5A.
  • FIG. 5D is an enlarged view of the VD portion in FIG. 5B.
  • FIG. 6A is a plan view showing the brush base that is moving from the neutral position to the forward rotation operation position.
  • FIG. 6B is a perspective view showing the brush base in the forward rotation operation position.
  • FIG. 6C is an enlarged view of the VIC portion in FIG. 6A.
  • FIG. 6D is an enlarged view of the VID portion in FIG. 6B.
  • FIG. 7A is a plan view showing the brush base in a state of returning from the forward rotation operation position to the neutral position.
  • FIG. 7B is a perspective view showing the brush base in which the neutral position force also starts to move to the reverse rotation position.
  • FIG. 7C is an enlarged view of the VIIC part in FIG. 7A.
  • FIG. 7D is an enlarged view of the VIID portion in FIG. 7B.
  • FIG. 8A is a plan view showing the brush base that is moving from the neutral position to the reverse rotation position.
  • FIG. 8B is a perspective view showing the brush base in the reverse rotation operation position.
  • FIG. 8C is an enlarged view of a VIIIC portion in FIG. 8A.
  • FIG. 8D is an enlarged view of the VIIID portion in FIG. 8B.
  • FIGS. 9A to 9D are diagrams showing components of the rotational movement switching device according to the second embodiment of the present invention It is a schematic diagram which shows the state which a material moves to a neutral position force rotation operation position.
  • FIGS. 10A to 10 LOC is a schematic view showing a state in which each of the members moves from the rotational operation position to the neutral position.
  • FIG. 1 shows an electric drill 1 which is an example of an electric tool provided with a rotation direction switching device according to the first aspect of the present invention.
  • the electric drill 1 has a well-known chuck 4 that has a spindle 3 that protrudes in front of the nozzle 2 with a built-in motor (not shown) (left side in FIG. 1) and a drill bit or the like that can be attached to the tip of the spindle 3.
  • a handle 5 extends downwardly from the housing 2, and a switch that is turned on by pushing the switch lever 6 is provided in the handle 5.
  • 7 is a motor speed change dial
  • 8 is a stopper pole for setting the drilling depth.
  • the rotation direction switching device 10 includes a disk ring-shaped unit base 11 fixed to a stator of a motor, and a brush that is assembled above the unit base 11 and has a short sleeve shape having substantially the same outer diameter as the unit base 11.
  • the unit base 11 and the brush base 12 are both made of synthetic resin.
  • the unit base 11 is provided with a pair of plane arc-shaped fixed contacts 13 in a point-symmetric manner, and the ends of the fixed contacts 13 are spaced apart from the ends of the other fixed contact 13 in the circumferential direction by a predetermined distance.
  • the elastic ends are opposed to each other and can swing in the radial direction.
  • 14 is an insertion piece connected to each fixed contact 13 and inserted and electrically connected to one pair of terminal terminals on the stator coil side
  • 15 is the other pair of terminals on the lower end force coil side
  • a terminal fitting that is inserted into a terminal and whose upper end is connected to a switch.
  • Under the unit base 11, a continuous portion 16 is formed that holds each insertion piece 14 and the terminal fitting 15 and is connected to the terminal terminal of the stator.
  • a pair of hooks 17 whose upper ends are folded outward are projected upward.
  • the hook 17 is engaged with the recess 18 formed in the circumferential direction on the inner periphery of the brush base 12, so that the brush base 12 is rotatably connected to the unit base 11.
  • a metal brush holder 19 is assembled with a square sleeve on a straight line at a point-symmetrical position, and a carbon brush can be held, not shown, attached to the brush holder 19.
  • Reference numeral 20 denotes a spiral panel provided on each brush holder 19 to press the carbon brush toward the commutator side. As shown in FIGS.
  • each brush holder 19 is connected with a movable contact 21 whose lower end protrudes from the lower surface of the brush base 12 at a point-symmetrical position, between the ends of the fixed contact 13 of the unit base 11. Respectively. Therefore, by the circumferential movement of the movable contact 21 accompanying the rotation of the brush base 12, the movable contact 21 can selectively come into contact with either of two pairs of ends that are symmetrical with respect to the fixed contact 13.
  • the motor can be switched between forward rotation and reverse rotation. In the state shown in FIGS. 4A and 5A in which the movable contact 21 does not contact any fixed contact 13 (in FIGS.
  • the unit base is omitted except for the fixed contact and the terminal fitting for the sake of convenience), Become. Further, on the side surface of the brush base 12, an operation projection 22 that projects into the window 9 formed on the side surface of the housing 2 of the electric drill 1 is projected so that the external force of the housing 2 can also rotate the brush base 12. There is.
  • a pair of protrusions 23 having a trapezoidal shape in plan view are provided symmetrically on the bottom surface of the brush base 12 before and after the movable contacts 21 in the circumferential direction.
  • the end portion of each fixed contact 13 of the unit base 11 includes a circumferential contact portion 24 whose tip is folded outward, and a detour portion which is bent in a trapezoidal shape outward from the contact portion 24 to the outside. It is bent to 25. Therefore, when the brush base 12 is rotated, the projection 23 first interferes with the contact portion 24 of the fixed contact 13, but the contact portion 24 is pushed outward by the guide of the side surface of the projection 23 and the contact portion 24 being folded back. Therefore, the movement of the protrusion 23 is allowed.
  • the bypass 25 avoids the protrusion 23.
  • the contact portion 24, which has been released from the interference with the protrusion 23, returns to its original position due to its elasticity and comes into contact with the movable contact 21 because it is substantially in the same position as the protrusion 23.
  • the movable contact 21 is located between the contact portions 24 of the two fixed contacts 13 and the protrusion 23 is also connected to the contact portion 24. Are in contact with each other. From here, rotate the brush base 12 to the forward rotation side (rotate clockwise in Fig. 5A). As shown in FIGS. 5B and 5D, first, the protrusion 23 at the front in the rotation direction comes into contact with the contact portion 24 and pushes the contact portion 24 outward as described above to allow the brush base 12 to rotate.
  • the quick insertion and the quick interruption are constant regardless of the operation speed of the brush base 12. That is, even when the brush base 12 is slowly rotated, the contact portion 24 is a force that is inertially contacted and separated from the movable contact 21 depending on the presence or absence of interference with the protrusion 23.
  • the brush base 12 is provided with the protrusion 23 that interferes with the fixed contact 13 as the brush base 12 rotates to each rotational operation position, while the tip of the fixed contact 13 is If the elastic end is deformed in the direction away from the movable contact 21 due to interference with the protrusion 23, the protrusion 23 is rotated around the elastic end of the fixed contact 13 at each rotational operation position to contact the movable contact 21.
  • the elastic end deformed by the interference with the protrusion 23 is formed in the bypass 25.
  • the rotation direction switching device 10 of the present invention has confirmed a contact life that is approximately twice as long.
  • the protrusion 23 is trapezoidal and the contact surface with the elastic end of the fixed contact 13 is an inclined surface that guides the deformation of the elastic end, so that the elastic end of the fixed contact 13 can be smoothly deformed. it can. Therefore, good operability can be maintained without causing unnecessary resistance to the operation of the brush base 12.
  • a fixed contact 30 and a fixed protrusion 31 spaced apart in the circumferential direction of the unit base 11 are provided on the unit base 11 side, while the movable contact of the brush base 12 is provided.
  • 32 is an arc-shaped elastic end which is folded back only at the tip, and a movable protrusion 33 having a parallelogram shape in plan view is provided on the inner side near the tip of the movable contact 32.
  • the movable protrusion 33 is capable of interfering with the fixed protrusion 31 as the brush base 12 is rotated.
  • the first side face 34 and the second side face 35 of the pair facing the fixed protrusion 31 are inclined surfaces. ing.
  • the elastic end of the movable contact 32 deformed due to the interference with the fixed protrusion 31 is fixed when the brush base 12 is rotated to each rotational operation position.
  • the elastic end separates from the fixed contact 30 due to its own elasticity due to non-interference with the fixed protrusion 31.
  • the bent shape of the contact that becomes the protrusion or the elastic end can be appropriately changed, and if the contact can be pushed up at the time of replacement or the protrusion at the rotational operation position can be avoided, the protrusion Can be changed to a triangle or a circle, and the detour part can be changed to a mountain or semicircle.
  • the fixed contact on the unit base side is provided at the elastic end and the protrusion is provided on the brush base side.
  • the movable movement on the brush base side is performed as in the second embodiment.
  • Protrusions can be provided on the unit base side with the contacts at the elastic ends.
  • the elastic end that interferes with the protrusion is pushed upward to be deformed.
  • the elastic end may be pushed inward to be deformed.
  • the power tools are not limited to power drills, but can be used for other types of power tools that have a motor rotation direction switching function, such as power driver drills and power drivers. It is.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Motor Or Generator Current Collectors (AREA)
  • Motor Or Generator Frames (AREA)
  • Portable Power Tools In General (AREA)

Abstract

Selon l'invention, dans un dispositif capable d'effectuer une opération de basculement du sens de rotation d'un moteur couplé mécaniquement à un outil au niveau de l'extrémité distale d'un outil électrique, des premier et deuxième contacts reliés électriquement à une bobine de moteur sont prévus sur une base unitaire. Un troisième contact est utilisé sur une base de balais. Un élément de fonctionnement est couplé à la base de balais et peut être manœuvré manuellement de telle sorte que la base de balais soit déplacée entre une première position où le troisième contact touche le premier contact afin de faire tourner le moteur dans un premier sens, et une deuxième position où le troisième contact touche le deuxième contact afin de faire tourner le moteur dans un second sens, inverse du premier sens. Une protubérance est prévue sur la base de balais de telle sorte que la base de balais soit située entre le troisième contact et chacun des premier et deuxième contacts lorsque le troisième contact est disposé au niveau d'une position neutre à distance à la fois des premier et deuxième contacts. Chacun des premier et second contacts comporte une partie déformable élastiquement incluant une partie courbée. Lorsque la base de balais est disposée entre la position neutre et chacune des première et deuxième positions, la protubérance touche la partie déformable élastiquement afin de déformer les premier et deuxième contacts dans la direction à distance du troisième contact. Lorsque la base de balais est disposée au niveau de chacune des première et deuxième positions, la protubérance est reçue au moins partiellement par la partie courbée.
PCT/JP2006/323014 2005-11-21 2006-11-17 Dispositif pour basculer le sens de rotation d'un outil électrique WO2007058321A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2005-336195 2005-11-21
JP2005336195A JP2007143346A (ja) 2005-11-21 2005-11-21 電動工具の正逆切替装置

Publications (1)

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WO2007058321A1 true WO2007058321A1 (fr) 2007-05-24

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WO (1) WO2007058321A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2031615A3 (fr) * 2007-08-27 2010-12-15 Makita Corporation Dispositif de changement de rotation dans le sens des aiguilles d'une montre et dans le sens inverse pour outil électrique
SE2130285A1 (en) * 2021-10-22 2023-04-23 Atlas Copco Ind Technique Ab Arrangement for power tool, tool head, power tool, and method of controlling arrangement

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101072706B1 (ko) 2009-11-17 2011-10-11 계양전기 주식회사 전류전환장치를 구비한 전동공구
KR101226820B1 (ko) 2011-12-29 2013-01-25 계양전기 주식회사 회전방향 전환장치를 구비한 전동공구용 모터
KR102253998B1 (ko) * 2019-11-25 2021-05-21 계양전기 주식회사 회전식 모드 전환장치를 구비한 전동공구의 모터부

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JPS5152935U (fr) * 1974-10-21 1976-04-22
JPS5670927U (fr) * 1979-11-05 1981-06-11
JPH03139152A (ja) * 1989-07-15 1991-06-13 Kress Elektrik Gmbh & Co Elektro Motorenfab ユニバーサルモータ及びその製造方法
JPH03150057A (ja) * 1989-07-15 1991-06-26 Kress Elektrik Gmbh & Co Elektro Motorenfab 電動工具の電気的切り換え用切り換え装置
JPH04210754A (ja) * 1990-12-18 1992-07-31 Nippondenso Co Ltd 直流電動機
DE19605202C1 (de) * 1996-02-13 1997-09-18 Atlas Copco Elektrowerkzeuge Elektrowerkzeugmaschine mit Umschalteinrichtung für Rechts-/Linkslauf
EP0924842A2 (fr) * 1997-12-19 1999-06-23 Black & Decker Inc. Inverseur de marche pour un moteur électrique

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5152935U (fr) * 1974-10-21 1976-04-22
JPS5670927U (fr) * 1979-11-05 1981-06-11
JPH03139152A (ja) * 1989-07-15 1991-06-13 Kress Elektrik Gmbh & Co Elektro Motorenfab ユニバーサルモータ及びその製造方法
JPH03150057A (ja) * 1989-07-15 1991-06-26 Kress Elektrik Gmbh & Co Elektro Motorenfab 電動工具の電気的切り換え用切り換え装置
JPH04210754A (ja) * 1990-12-18 1992-07-31 Nippondenso Co Ltd 直流電動機
DE19605202C1 (de) * 1996-02-13 1997-09-18 Atlas Copco Elektrowerkzeuge Elektrowerkzeugmaschine mit Umschalteinrichtung für Rechts-/Linkslauf
EP0924842A2 (fr) * 1997-12-19 1999-06-23 Black & Decker Inc. Inverseur de marche pour un moteur électrique

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2031615A3 (fr) * 2007-08-27 2010-12-15 Makita Corporation Dispositif de changement de rotation dans le sens des aiguilles d'une montre et dans le sens inverse pour outil électrique
RU2472611C2 (ru) * 2007-08-27 2013-01-20 Макита Корпорейшн Устройство переключения вращения по часовой стрелке и против часовой стрелки для электроинструмента
SE2130285A1 (en) * 2021-10-22 2023-04-23 Atlas Copco Ind Technique Ab Arrangement for power tool, tool head, power tool, and method of controlling arrangement
SE545573C2 (en) * 2021-10-22 2023-10-24 Atlas Copco Ind Technique Ab An arrangement for a power tool, a tool head, and a power tool enabling dual direction rotation of a drive member and positioning of the drive member in a neutral position and a method for controlling the arrangement

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