EP1070331A1 - Interrupteur electrique - Google Patents

Interrupteur electrique

Info

Publication number
EP1070331A1
EP1070331A1 EP99944139A EP99944139A EP1070331A1 EP 1070331 A1 EP1070331 A1 EP 1070331A1 EP 99944139 A EP99944139 A EP 99944139A EP 99944139 A EP99944139 A EP 99944139A EP 1070331 A1 EP1070331 A1 EP 1070331A1
Authority
EP
European Patent Office
Prior art keywords
actuating member
actuating
locking means
switch
switching
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
EP99944139A
Other languages
German (de)
English (en)
Other versions
EP1070331B1 (fr
Inventor
Peter Broghammer
Uwe Stratmann
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.)
Marquardt GmbH
Original Assignee
Marquardt GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Marquardt GmbH filed Critical Marquardt GmbH
Publication of EP1070331A1 publication Critical patent/EP1070331A1/fr
Application granted granted Critical
Publication of EP1070331B1 publication Critical patent/EP1070331B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/20—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch wherein an auxiliary movement thereof, or of an attachment thereto, is necessary before the main movement is possible or effective, e.g. for unlatching, for coupling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H9/06—Casing of switch constituted by a handle serving a purpose other than the actuation of the switch, e.g. by the handle of a vacuum cleaner

Definitions

  • the invention relates to an electrical switch according to the preamble of claim 1.
  • Such electrical switches are used in particular in electrical devices, such as in electrical hand tools or the like.
  • the electric hand tool can be an electric drill.
  • the switch is used to switch on and off and, if necessary, further to set the speed of an electric motor of the electric hand tool.
  • the electrical switch can be provided with a switch-on lock.
  • This switch has a housing, an actuating member which is arranged movably on the housing and a plunger which transmits the movement of the actuating member into the housing and acts on the switch.
  • the actuating member can be moved from an initial position into actuating positions, in each of which a function of the switch can be triggered.
  • the switch is assigned a blocking means which can be switched between a blocking state for blocking the movement of the actuating member and a release state for releasing the movement of the actuating member.
  • the locking device in this switch acts as a switch-on lock.
  • the actuating member can be moved into the actuating position. In the actuation position, however, no further effect of a locking means is provided, so that the locking means on this switch only has a single functionality.
  • the invention has for its object to provide a switch of the type mentioned with locking means of extended functionality.
  • first locking means act on the actuating member in its initial position and second locking means in a first actuating position of the actuating member.
  • the switch has an actuating element with three switch positions for switching the two locking means. In the first switching position of the actuating element, the first locking means is in the locked state. In the second switch position, the first locking device is in the release state and the second locking device is in the locked state. Finally, in the third switch position, both locking devices are in the release state.
  • first locking means in the vicinity of the actuating member and the second locking means in the vicinity of the tappet is preferred.
  • Part of the second locking means can be arranged centrally on the tappet.
  • the first locking means can be designed in the manner of a switch-on lock and the second locking means in the form of a lock-out lock for the actuating member.
  • the actuating element is expediently only switchable in the initial position of the actuating member.
  • the first locking means consists of an attachment which is operatively connected to the actuating element and a corresponding stop arranged on the actuating member. In the initial position, the attachment comes into contact with the stop in the locked state and can be moved sideways past the stop in the released state.
  • the second locking means is designed as a stroke limiter for the actuating member in such a way that the movement path of the actuating member is limited to the first actuating position in the locked state and is released for further movement into the second actuated position in the released state.
  • the stroke limitation can in turn consist of a movable cam ring which surrounds the tappet centrally and a corresponding stop attached to the actuating member.
  • the stop comes into contact with a cam of the cam ring and can be moved past the cam in the release state.
  • a pin on the actuator that engages a fork attached to the cam ring can be used to move the cam ring between the locked and unlocked states.
  • the actuating element can be used as a slide, swivel lever, adjusting wheel or the like. with three rest positions - 4 -
  • the first switching position for the actuating element is preferably formed by the middle and the second and third switching positions each by a lateral latching position.
  • Function symbols can be attached to the actuating element, the function symbol that characterizes this switching position being visible to the user in the respective switching position.
  • a simple assembly of the switch in the electrical device is further provided if the actuating element forms a preassembled structural unit with the switch.
  • a carrier part can be connected to the housing of the switch, the actuating element being movably mounted in the carrier part.
  • the advantages achieved by the invention are, in particular, that certain functions of the switch can be selected in the starting position of the actuating member and further functions can be blocked. This effectively prevents accidental activation of undesired functions by the user, which also reduces the risk of accidents for the user.
  • the electric hand tool can be used in a first
  • the actuating position of the actuating member can be operated at a variable and optionally regulated speed, which is lower than the maximum speed, while in a second actuating position the electric hand tool can be operated at the maximum, but unregulated, speed.
  • the user can selectively lock the second actuation position, which results in an optimal work result.
  • the switch according to the invention achieves yet another safety gain for the user of the electric hand tool.
  • the formation of the locking means prevents the occurrence of a tilting moment on the actuating member even when the actuating member is subjected to excessive stress when the locking member is in the locked state. This effectively prevents accidental or improper switching on of the electric hand tool.
  • FIG. 2 shows the electrical switch from FIG. 1 in plan view
  • FIG. 3 shows a section along the line 3-3 from FIG. 1, the actuating element for the locking means being in the second switching position
  • Fig. 4 shows a section as in Fig. 3, wherein the
  • Actuating element for the locking means is in the first switching position
  • Fig. 5 shows a section as in Fig. 3, wherein the
  • Actuating element for the locking means is in the third switching position
  • FIG. 7 shows a section through the switch along the line 7-7 from FIG. 1,
  • Fig. 8 is an electrical switch in side view according to another embodiment.
  • FIG. 9 is a plan view of the actuating element according to FIG. 8.
  • the electric hand tool 20 has an electrical switch 1 arranged in the handle 21, which is used to switch on and off and to set the speed of the electric motor (not shown further) in the electric hand tool 20.
  • the electric hand tool 20 can be, for example, a mains-operated electric drill, a cordless drill or the like. act.
  • the switch 1 shown in more detail in Fig. 1 has a housing 2 on which an actuator 3 is movably arranged.
  • the actuator 3 has, for example, the shape of a linearly movable trigger that the user moves manually.
  • the speed of the electric motor is then set by means of a phase control, pulse width modulation or the like and, if necessary, regulated, i.e. kept largely constant even under load on the electric hand tool 20.
  • the electric motor runs at maximum speed.
  • the switch 1 also has a plunger 4, which transmits the movement of the actuating member 3 into the housing 2.
  • the tappet 4 can be located approximately in the middle or somewhat outside - 7 -
  • the plunger 4 acts on at least one electrical component located in the housing 2, such as on a contact system 22, 23, on a potentiometer 25 or the like assigned to a printed circuit board 24, as can be seen in more detail from FIG. 7.
  • the actuating member 3 can be moved from a starting position, which is shown in FIG. 1, by manual action of the user in the direction 26 into a first actuating position and from there into a further second actuating position.
  • a function of the switch 1 can be triggered by the action of the plunger 4, namely in the first actuation position a control of the electric motor for a speed corresponding to the actuation path covered by the actuation member 3 and in the second actuation position the setting of the maximum speed by the full voltage is applied to the electric motor.
  • the switch 1 is assigned two locking means 5, 6, which can be switched between a locked state for blocking the movement of the actuating member 3 and a release state for releasing the movement of the actuating member 3.
  • the first locking means 5 is located in the vicinity of the actuator 3 and acts on the actuator 3 in its initial position.
  • the second locking means 6 is located in the vicinity of the plunger 4 and acts on the actuating member 3 in the first actuating position.
  • the second locking means 6 is preferably arranged centrally on the tappet 4. It is also essential that a single, three switching positions actuating element 7 for switching the two locking means 5, 6 is assigned to the switch 1. In the first switching position of the actuating element 7, the first locking means 5 is in the locked state. In the second switching position of the actuating element 7, the first locking means 5 is in the - 8th -
  • a potentiometer 25 and electronics for speed adjustment or speed control of the electric motor can be arranged on the circuit board 24 in the housing 2. In the starting position of the
  • Actuator 3 is now no action of the plunger 4 on the two contact systems 22, 23, whereby the electric motor is switched off.
  • the first locking means 5 is designed in the manner of a switch-on lock for the actuating member 3, so that the actuating member 3 cannot be moved in the first switching position of the actuating element 7, which prevents the electric motor from being switched on.
  • the electric motor can only be switched on after the actuating element 7 has been switched to the second or third switching position.
  • the actuating member 3 can be moved into the first actuating position.
  • the plunger 4 has a switching action on the first contact system 22, whereby the voltage for the electronics is switched on.
  • the potentiometer 25 in accordance with the movement path of the actuating member 3 in the direction 26 (see FIG. 1), so that a setting of a variable and preferably regulated speed of the electric motor corresponding to the moving position of the actuating member 3 is carried out via the electronics.
  • the second locking means 6 is designed in the manner of a switch-through lock for the actuating member 3, which means that the - 9 -
  • Actuator 3 in the second actuation position is prevented because the second locking means 6 is in the locked state.
  • the actuating member 3 can be moved into both the first and the second actuating position, since both locking means 5, 6 are in the release state.
  • the plunger 4 In the second actuation position, the plunger 4 then has a switching action on the second contact system 23, as a result of which the electronics are bridged. As a result, the full voltage is applied to the electric motor and the electric motor moves at maximum, unregulated speed.
  • the actuating element 7 is expediently only switchable in the initial position of the actuating member 3.
  • a switch-on lock for the electric motor is present in the first switching position, which is used to protect the user against unwanted operation of the electric hand tool 20.
  • the user For operation, the user must consciously switch the actuating element 7.
  • the user can choose between the second and third switching position.
  • the electric motor In the second switching position, the electric motor is to be operated at an adjustable and regulated speed, which is, however, less than the maximum speed. This mode of operation is suitable for processing hard materials, for example for drilling in metal.
  • the electric motor In the third switch position, the electric motor can be operated at an adjustable speed up to the maximum speed, but the operation at maximum speed is unregulated. This mode of operation can be useful when processing soft materials, for example when drilling in wood.
  • the first locking means 5 consists of an attachment 8 which is operatively connected to the actuating element 7 and a corresponding stop 9 arranged on the actuating member 3.
  • the attachment 8 can be formed in one piece with the actuating element 7.
  • the approach 8 comes in the starting position of the actuator 3 in the locked state, ie when the actuating element 7 is in the first switching position, in contact with the stop 9, as can be seen in more detail in FIGS. 2 and 4.
  • the release state corresponding to the second switching position of the actuating element 7 can be seen in FIG. 3 and the release state corresponding to the third switching position of the actuating element 7 can be seen in FIG. 5.
  • FIG. 2 in connection with FIG.
  • the second locking means 6 is designed as a stroke limitation for the actuating member 3.
  • the stroke limitation consists of a cam element 11 movably arranged on the housing 2 with at least one cam 12 and at least one corresponding stop 13 attached to the actuating member 3, as can be seen in more detail in FIG. 2.
  • the stop 13 comes in the first operating position of the actuator 3 in the locked state - 11 -
  • a pin 14 is arranged on the actuating element 7, which engages in a fork 15 attached to the cam element 11.
  • the cam element 11 can be moved between the locked state and the released state, as can be seen in more detail in FIGS. 3 to 5.
  • FIG. 3 the second switching position of the actuating element 7 is shown, in which the cam 12 is in such a position that the second locking means 6 is in the locked state.
  • 4 shows an intermediate position of the cam 12, which corresponds to the first switching position of the actuating element 7.
  • the first locking means 5 is in the locked state, so that the second locking means 6 is no longer effective here.
  • 5 finally shows the third switching position of the actuating element 7, in which the cam 12 is in such a position that the second locking means 6 is in the release state.
  • the design of the second locking means 6 as a stroke limitation arranged in the vicinity of the tappet 4 prevents the occurrence of a tilting moment on the actuating member 3 in the event of improper or violent action by the user on the actuating member 3.
  • the actuating element 7 is in the second switching position according to FIG. - 12 -
  • the actuating element 7 can be movably mounted in a carrier part 16 connected to the housing 2.
  • the actuating element 7 can also be mounted as a separately assembled part only in the handle 21 of the electric hand tool 20.
  • the actuating element 7 is designed as a slide 17 with three locking positions. As can be seen in particular from FIG. 2, where the second switching position of the actuating element 7 is shown in dashed lines and the further switching positions of the actuating element 7 are shown in dashed lines, the first switching position for the actuating element 7 is from the middle detent position and the second and third switching position from formed two lateral locking positions.
  • a detent spring not shown here, interacts with a projection 18 visible in FIG. 2 on the actuating element 7 for the fixing of the detent positions. - 13 -
  • actuating element 7 can also be designed as a swivel lever or the like.
  • a setting wheel 27 is shown as an actuating element for switching the two locking means 5, 6 as a further embodiment.
  • the adjusting wheel 27 is rotatably mounted in the handle 21 of the electric hand tool 20.
  • the adjusting wheel 27 has three locking positions, which are defined by the interaction of a locking spring 28 visible in FIG. 9 with an extension 18 of the adjusting wheel 27. These locking positions are in turn the three switching positions of the adjusting wheel 27.
  • Function symbols 29 are attached to the adjusting wheel 27, which characterize the respective switching position. In the handle 21 there is a window 30 so that the function symbol 30 assigned to the switch position assumed is visible to the user.
  • an electrical switch which is equipped with two blocking means which interact according to the invention can not only be used on electric hand tools, but can also advantageously be used in household appliances, gardening appliances or other electrical appliances.

Landscapes

  • Push-Button Switches (AREA)
  • Lock And Its Accessories (AREA)
  • Mechanisms For Operating Contacts (AREA)

Abstract

L'invention concerne un interrupteur (1) comportant deux éléments de blocage (5, 6), qui commutent entre une position de blocage qui bloque l'actionneur (3) et une position de libération qui libère le mouvement de l'actionneur (3). Le premier moyen de blocage (5) situé à proximité de l'actionneur (3) agit sur l'actionneur (3) dans la position initiale. Le deuxième moyen de blocage situé à proximité du poussoir (4) agit sur l'actionneur (3) dans la première position d'actionnement. Un élément de commande (7) à trois positions de commutation permettant de commuter les deux moyens de blocage (5, 6) est affecté à l'interrupteur (1).
EP99944139A 1998-04-04 1999-03-31 Interrupteur electrique Expired - Lifetime EP1070331B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19815176 1998-04-04
DE19815176 1998-04-04
PCT/DE1999/000978 WO1999052118A1 (fr) 1998-04-04 1999-03-31 Interrupteur electrique

Publications (2)

Publication Number Publication Date
EP1070331A1 true EP1070331A1 (fr) 2001-01-24
EP1070331B1 EP1070331B1 (fr) 2002-05-22

Family

ID=7863618

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99944139A Expired - Lifetime EP1070331B1 (fr) 1998-04-04 1999-03-31 Interrupteur electrique

Country Status (4)

Country Link
US (1) US6555773B1 (fr)
EP (1) EP1070331B1 (fr)
DE (2) DE19913712A1 (fr)
WO (1) WO1999052118A1 (fr)

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USD535862S1 (en) * 2003-05-23 2007-01-30 Milwaukee Electric Tool Corporation Trigger for a power tool
JP4509662B2 (ja) * 2004-06-16 2010-07-21 株式会社マキタ 電動打撃工具
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DK1640118T3 (da) * 2004-09-22 2008-03-17 Black & Decker Inc Låsbar triggerknap til borehammer
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JP4735106B2 (ja) * 2005-07-29 2011-07-27 パナソニック電工株式会社 電動工具
ATE419636T1 (de) * 2005-11-16 2009-01-15 Marquardt Gmbh Elektrowerkzeug, insbesondere akku- elektrowerkzeug
US7476821B1 (en) * 2007-07-24 2009-01-13 Defond Components Limited Trigger mechanism
JP5054461B2 (ja) * 2007-08-03 2012-10-24 佐鳥エス・テック株式会社 トリガースイッチ
US8047100B2 (en) * 2008-02-15 2011-11-01 Black & Decker Inc. Tool assembly having telescoping fastener support
EP2580850B1 (fr) 2010-06-14 2021-11-10 Black & Decker, Inc. Unité de commande pour moteur sans balais dans un outil électrique
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DE102011075196A1 (de) * 2011-05-04 2012-11-08 Robert Bosch Gmbh Werkzeugmaschinenschaltvorrichtung
DE102011050192A1 (de) * 2011-05-06 2012-11-08 Aesculap Ag Chirurgisches Kupplungssystem und chirurgisches Antriebssystem
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EP3575665B1 (fr) * 2011-08-10 2020-10-07 Milwaukee Electric Tool Corporation Pistolet graisseur
EP2571037B8 (fr) 2011-09-14 2015-11-25 Braun GmbH Appareil de cuisine motorisé électrique
US8723060B2 (en) * 2011-12-21 2014-05-13 Robert Bosch Tool Corporation Method and mechanism for power tool lock-off
DE102014202585A1 (de) * 2013-04-29 2014-10-30 Robert Bosch Gmbh Handwerkzeugbedieneinheit
US9559628B2 (en) 2013-10-25 2017-01-31 Black & Decker Inc. Handheld power tool with compact AC switch
US9868199B2 (en) 2014-01-29 2018-01-16 Black & Decker Inc. Paddle assembly on a compact sander
USD718998S1 (en) 2014-01-29 2014-12-09 Black & Decker Inc. Electric hand-held sander
EP2946886B1 (fr) * 2014-03-28 2017-02-22 Black & Decker Inc. Module de commutation et de commande électronique pour un outil électrique
EP3117963A1 (fr) * 2015-07-17 2017-01-18 HILTI Aktiengesellschaft Machine-outil portative
CN106601517B (zh) * 2015-10-16 2018-11-09 北京宝沃汽车有限公司 一种调节开关支架
DE102017002353A1 (de) * 2017-03-11 2018-09-13 Andreas Stihl Ag & Co. Kg Handgeführtes Arbeitsgerät
WO2020142894A1 (fr) * 2019-01-08 2020-07-16 深圳拓邦股份有限公司 Dispositif électronique, carte de circuit imprimé et outil électrique
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Also Published As

Publication number Publication date
WO1999052118A1 (fr) 1999-10-14
US6555773B1 (en) 2003-04-29
DE19913712A1 (de) 1999-10-07
DE59901506D1 (de) 2002-06-27
EP1070331B1 (fr) 2002-05-22

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