EP3061114A1 - Elektrischer schalter, insbesondere elektrowerkzeugschalter - Google Patents
Elektrischer schalter, insbesondere elektrowerkzeugschalterInfo
- Publication number
- EP3061114A1 EP3061114A1 EP14793042.4A EP14793042A EP3061114A1 EP 3061114 A1 EP3061114 A1 EP 3061114A1 EP 14793042 A EP14793042 A EP 14793042A EP 3061114 A1 EP3061114 A1 EP 3061114A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- plunger
- switch
- switching
- coupling element
- contact system
- 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
Links
- 230000008878 coupling Effects 0.000 claims abstract description 72
- 238000010168 coupling process Methods 0.000 claims abstract description 72
- 238000005859 coupling reaction Methods 0.000 claims abstract description 72
- 230000005540 biological transmission Effects 0.000 claims description 18
- 230000006835 compression Effects 0.000 claims description 18
- 238000007906 compression Methods 0.000 claims description 18
- 238000007599 discharging Methods 0.000 claims description 3
- 230000003993 interaction Effects 0.000 abstract 2
- 230000008901 benefit Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000000969 carrier Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/64—Driving arrangements between movable part of magnetic circuit and contact
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
- H01H50/18—Movable parts of magnetic circuits, e.g. armature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
- H01H83/12—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by voltage falling below a predetermined value, e.g. for no-volt protection
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2231/00—Applications
- H01H2231/048—Tools; Drilling machines
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2235/00—Springs
- H01H2235/01—Spiral spring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/54—Mechanisms for coupling or uncoupling operating parts, driving mechanisms, or contacts
-
- 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
- Electric switch in particular power tool switch
- the invention relates to an electrical switch according to the preamble of
- Such electrical switches are mainly used for a power tool use.
- These power tools may be angle grinders, drills, grinders, saws, planers, o. The like. Act.
- the invention has for its object to further develop the switch so that a restart protection for the power tool is provided on the switch, in particular, the switch should be designed in a simple manner.
- the actuating member comprises a plunger and a switching piece, wherein the switching piece acts on the contact system for switching. Furthermore, a coupling element is provided, such that the plunger in and / or out
- Actuator act to its provision in the off position of the contact system. In a simple manner, it may be appropriate for this purpose that a compression spring acts on the contact piece.
- the coupling element can be movably arranged on the switching piece.
- an actuator for moving and / or holding the
- Coupling element may be provided such that in a first position of the
- Coupling element (namely, position coupled) of the plunger in cooperation with the switching piece and in a second position of the coupling element (namely, position decoupled) of the plunger is out of cooperation with the switching piece. Furthermore, it may be that the coupling element is held in the first position by an elastic means, which may be a compression spring in a simple manner.
- a transmission element may be provided between the coupling element and the actuator for movement and / or for holding the coupling element.
- the transmission element in the manner of a slider, a Fork element o. The like. Be configured.
- the transmission element in the manner of a slider, a Fork element o. The like. Be configured.
- the actuator may be an electromagnet, one such
- the coupling element of a turntable, a pivot pin, a rotary lever o.
- a coupling region may be provided in the manner of a link on the plunger and / or on the coupling element.
- At least one electrical connection for supplying the electrical voltage to the contact system can be provided on the electrical switch. This supplied electrical voltage can also apply the electromagnet to the simple functionality. Finally, at least one further electrical connection can be provided for discharging the electrical voltage connected by means of the contact system.
- Restart protection function will be required from 2016 according to the modified device standard EN 60745-2-3 also for small angle grinders. -
- the restart protection prevents a device locked in the ON position from restarting and restarting the power supply unintentionally and / or unattended restarting and thus dangerous for the user
- the restart protection function is already implemented today by various separate electronic modules in small angle grinders, in which even more electronic features are integrated, such as overload protection, speed preselection, etc.
- the present invention aims at such devices that do not include electronics today, in the future but also have to meet the standard requirement. Ideally, then only the switch must be replaced, and already the device meets the standard requirement for restart protection.
- the locking is realized in small angle grinders usually on the outer actuator of the device.
- a distinction is generally between slide and paddle actuation.
- the present solution should be suitable for both common types of actuation. In slide operation, for example, the actuating element of the slider is brought by a tilting movement in the locked position. In paddle operation, this is done for example by a separate locking button. In order to achieve the widest possible market with the solution according to the invention, it should be able to be used without the power tool manufacturer having to change his actuating and / or locking system.
- Actuator and / or locking system can access, the
- the switch's operator is divided into two parts: “plunger” and "contact piece".
- the plunger transfers the movement of the external actuator of the
- the contact piece transmits this movement to the mechanical contact system and causes the closing and / or opening of the contacts.
- Both elements namely the plunger and the contact piece are urged by compression springs in the OFF position.
- These two elements are mechanically coupled by a turntable.
- the turntable has two rotary positions “coupled” and “decoupled”. The coupling is e.g. via a corresponding link on the outer wall of the plunger and the inner wall of the disc.
- the contact piece In the “coupled” position, the contact piece is taken along by the plunger when the plunger is pressed from the outside into the “ ⁇ position.” In the “decoupled” position, the contact piece is not taken away by the plunger or, if the switch is in the ON position. Position is then brought and the turntable in the position "decoupled”, the switching piece moves to the OFF position, while the plunger can remain in the ON position.
- the articulation of the turntable takes place via an electromagnet.
- the solenoid is designed as a solenoid
- the solenoid pulls on application of a voltage its armature against the force of a return spring and brings over a mechanical coupling of the armature with the turntable "coupled” to this position If the power supply to the lifting magnet is interrupted, the armature returns to its initial position by the force of the armature return spring and the disc returns to the "decoupled" position.
- the electromagnet is preferably electrically connected so that it is energized when mains voltage is applied to the mains inputs of the switch, i. as soon as the mains plug of the device is plugged in.
- this can also be done via an auxiliary contact, which only closes when the switch plunger is moved out of its "OFF" position.
- the coupling between armature and turntable should be provided with an additional spring element for the following reason.
- Restart protection case is the power tool does not start because the main contacts are open. However, the solenoid already returns the disc to the "coupled.” To deactivate the restart protection, the external lock must now be unlocked by operating the slider or paddle, allowing the external actuator to return to its "OFF" position.
- a resiliently rotating snap connection must be realized via the abovementioned spring element and a suitable link between the disk and the plunger.
- Solenoids solenoid designed to allow under energization in each case permanently reach the maximum tightening position. In this position, current consumption and heating of the coil are lowest, but the armature force is highest. This condition ensures that the magnet can be optimally designed for 100% duty cycle with minimum size.
- the minimum size of the magnet is in turn crucial to the size of the switch. The switch size is important because of the limited space available in the power tool.
- Holding magnet is as follows.
- the "coupled" position of the coupling element is maintained as long as the holding magnet is energized, and the required lifting work to bring the coupling element from the "decoupled” position to the “coupled” position is provided by the return spring of the contact piece via an oblique gate between the contact piece That is, when the contact piece moves upwardly by regular disconnection or decoupling in the event of a power failure, the slider is biased against its return spring via the oblique slide its return spring in the "coupled” position to be rotated.
- the return spring of the turntable is now placed differently, but still acts in the direction of "coupled.”
- the yoke of the holding magnet should be pressed by a light spring against the holding magnet, as only without
- the coupling element can be configured not only as a hub but in different ways.
- the armature When voltage is applied to the switch, the armature is held by the electromagnet.
- the transmission element designed, for example, as a slide is also held in its position.
- the coupling element for example, the hub, the pivot pin, the rotary lever o. The like., Is held coupled by a compression spring in the position.
- the coupling element is rotatably mounted on the contact piece. The coupling takes place between the coupling element and the example designed as a pusher plunger.
- Coupled in the position of the pusher hits a certain area of the
- the decoupling is initiated by the slider. If there is no voltage left on the switch, the electromagnet no longer holds the armature. As a result, the slider is no longer held in position. In this situation, the slider is moved by one or more compression springs. This movement will do that
- the advantages achieved by the invention are, in particular, that the switch meets the requirement of the changed device standard after a restart protection.
- By integrating the restart protection in the switch nothing or only very little has to be changed on the device design and / or the device wiring.
- the switch with restart protection according to the invention is against a conventional switch without Restart protection easily replaceable.
- the device manufacturers can thus use the same device platform for countries in which the restart protection is prescribed and for those in which it is not required.
- the proposed solution is equally suitable for paddle as well as slide operation of the device.
- Fig. 2 shows the complete electrical switch of FIG. 1 in plan view, wherein the
- FIG. 3 shows the switch as in Fig. 2 in a perspective view
- FIG. 4 shows the switch as in FIG. 3, but from the other side, FIG.
- FIG. 6 is a detail of FIG. 5 in a perspective view
- FIG. 7 shows the plunger from FIG. 6 as an individual part in a detail view
- FIG. 8 shows the turntable from FIG. 6 as an individual part in a detailed view
- 21 is an electrical device with electrical switch in a schematic schematic diagram
- Fig. 22 shows the complete electrical switch according to another embodiment in
- Fig. 27 shows the contact system of the switch of Fig. 22 with the associated elements for actuation, but in accordance with their operation different
- FIG. 29 shows the contact system of the switch from FIG. 28 with the associated elements for actuation
- Fig. 30 shows the complete electrical switch according to yet another embodiment in plan view, wherein the cover is removed from the housing, and
- an electrical switch 1 is operated by a mains voltage
- the switch 1 has a contact system 6 and serves as a On / off switch for the electric motor 22 of the power tool 21, as further shown in FIG. 21.
- At least one electrical connection 4 for supplying the electrical voltage, namely the mains voltage, to the contact system 6 is provided.
- the switch 1 has a movable actuator 7 for switching the contact system 6.
- the actuator 7 is in turn moved by a power tool 21 located on the user by the double arrow 24 movable actuator 23, i. the switch 1 is operated indirectly.
- a power tool 21 located on the user by the double arrow 24 movable actuator 23, i. the switch 1 is operated indirectly.
- Actuator 23 in which the switch 1 is turned on, the actuator 23 can be locked by a befindliches on the power tool 21 locking member 25 by the user. For this purpose, upon appropriate movement according to the pivoting arrow 26, a hook 27 on the locking element 25 engages in a corresponding groove 28 on the actuating element 23.
- the locked actuator 23 therefore does not need to be held by the user during operation of the power tool 21, which is particularly advantageous in continuous operation of the power tool 21.
- the switch 1 is designed such that a restart protection for the electric motor 22 is effected by the switch 1 in these cases.
- the switch 1 has a housing 2 which comprises a cover 3.
- the electrical connections 4 see Fig. 3 for the supply of the mains voltage and the electrical connections 5 for the
- FIG. 2 Supply lines to the electric motor 22.
- Fig. 3 or Fig. 4 switchable between an off position and an on position contact system 6 for switching on / off of the power tool 21.
- From the housing 2 protrudes the movable Actuator 7 for switching the contact system 6 out, as shown in FIG. 1 extracts.
- the actuator 7 is sealed on the cover 3 by means of an elastic bellows 8.
- the actuating member 7 comprises a plunger 9 and a contact piece 10.
- the contact piece 10 acts for switching to the contact system 6 a.
- a coupling element 11 is provided such that the plunger 9 can be brought into and / or out of cooperation with the contact piece 10.
- the switching of the contact system 6 in at least one position by means of the plunger 9 and the switching of the contact system 6 in at least one position independently of the plunger 9 allows. More specifically, the switching of the contact system 6 in the on and off position by means of the plunger 9 and the switching of the contact system 6 in the off position regardless of the plunger 9 allows.
- the coupling element 11 consists of a turntable which is movably arranged on the contact piece 10 and is rotatably mounted on the contact piece 10.
- Fig. 5 is a closer view of the contact system 6 with movable switching contacts 12, the plunger 9, which provided with a return spring 13 switching piece 10 and the hub 1 1 are shown.
- the fixed contacts of the contact system 6, with which the movable switching contacts 12 interact to make contact, are not shown.
- an electromagnet 16 which is designed here as a lifting magnet, is provided with a lifting rod 17 as an actuator and a fork element 18 as a transmission element for moving the coupling element 11.
- the electromagnet 16 is also connected to the mains voltage via the terminals 4 according to FIG.
- the coupling between the solenoid 16 and the hub 11 is in Detail to see in Fig. 9, wherein the compression spring 19 between the contact piece 10 and the hub 1 1 is stretched. This is in a first position of the coupling element
- the electromagnet 16 is not energized.
- the hub 1 1 is "decoupled” in the position.
- the electromagnet 16 is not energized.
- the hub 1 1 is "decoupled” in the position.
- Fig. 14 the switch 1 and the plunger 9 are actuated.
- the switching contacts 12 are closed.
- the electromagnet 16 is energized.
- the hub 1 1 is in the "coupled” position.
- Fig. 15 the switch 1 and the plunger 9 are actuated.
- the switching contacts 12 are still closed.
- the mains voltage at the switch 1 drops, so that therefore the electromagnet 16 is no longer energized.
- the hub 11 is rotated by the force of the return spring 20 of the electromagnet 16 via the fork element 18 in the "decoupled" position.
- Fig. 16 the switch 1 and the plunger 9 are still operated.
- the switching contacts 12 are open.
- the electromagnet 16 is not energized because the mains voltage has dropped. Now when the mains voltage returns, which occurs after plugging in the power plug of the power tool 21 or at the end of the power failure of the mains voltage, what follows happens, which can be seen in FIG. 17.
- the switch 1 and the plunger 9 are actuated and the switching contacts 12 are opened because the contact piece 10 is located in the OFF position.
- the electromagnet 16 is energized.
- the turntable 1 1 is brought into the position "coupled.”
- the electromagnet 16 can leave the turntable 1 1 in the "coupled” position, but the switching contacts 12 remain open.
- the switch 1 or the plunger 9 must be unlocked to the
- Switch contacts 12 remain open.
- the electromagnet 16 is energized.
- the hub 1 1 is "coupled” from the position “coupled” by the in Fig. 7 wedge-shaped backdrop 14 on the plunger 9 and by the FIG. 8 thereto designed corresponding gate 15 on the hub 1 1 in the direction “uncoupled” turned.
- Switching contacts 12 are open.
- the electromagnet 16 is energized.
- the hub 1 1 is snapped back into the position “coupled” by the force of the compression spring 19 between the contact piece 10 and turntable 11. Now the power tool 21 can again
- the electrical switch 1 can be seen in a further embodiment in which a holding magnet serves as an actuator 16.
- the switch 1 in turn has at least one elastic element 13, which acts on the actuator 7 to its provision in the off position of the contact system 6.
- this is a compression spring 13 acting on the contact piece 10.
- the coupling element 11, which is a turntable, is arranged movably on the contact piece 10, specifically in accordance with FIG 23 rotatably mounted on the contact piece 10.
- Coupling element 1 1 is of an elastic means 30, for example of a
- Compression spring held in the first position.
- the transmission element 18 in turn moves by means of an elastic element 31, in this case a compression spring, the
- Coupling element 1 1 in the second position Coupling element 1 1 in the second position.
- the switch 1 is seen in the OFF position of the contact system 6, while the coupling element 1 1 is coupled in position.
- the holding magnet 16 holds the turntable 11 in position coupled.
- the switch 1 can then be switched on electrically by means of the plunger 9.
- FIGS. 28 and 29 Yet another embodiment for the electrical switch 1 can be seen in FIGS. 28 and 29. Again, a holding magnet is provided as the actuator 16. The
- coupling element is not designed as a turntable but as a pivot pin 11, as can be seen in particular in Fig. 29. Further, it can be seen in Fig. 29 that in addition to the return spring 13 for the contact piece 10, a further return spring 33 is provided on the plunger 9 to its provision. Thus, the two return springs 13, 33 serve overall as an elastic element for returning the actuator 7. In Fig. 29, the coupling portion 34 between the pivot pin 11 and the plunger 9 is clearly visible.
- the electrical switch 1 can be seen in yet another embodiment. Again, a holding magnet is provided as an actuator 16.
- Coupling element is designed here as a rotary lever 11, by means of a
- Lever arm can cooperate with the designed as a slide 18 transmission element and by means of the other lever arm with the plunger 9.
- Fig. 31 is the
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanisms For Operating Contacts (AREA)
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
- Push-Button Switches (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013017440 | 2013-10-22 | ||
PCT/EP2014/072650 WO2015059191A1 (de) | 2013-10-22 | 2014-10-22 | Elektrischer schalter, insbesondere elektrowerkzeugschalter |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3061114A1 true EP3061114A1 (de) | 2016-08-31 |
EP3061114B1 EP3061114B1 (de) | 2018-03-07 |
Family
ID=51846621
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14793042.4A Not-in-force EP3061114B1 (de) | 2013-10-22 | 2014-10-22 | Elektrischer schalter, insbesondere elektrowerkzeugschalter |
Country Status (5)
Country | Link |
---|---|
US (1) | US10354822B2 (de) |
EP (1) | EP3061114B1 (de) |
CN (1) | CN106062916B (de) |
DE (1) | DE102014015410A1 (de) |
WO (1) | WO2015059191A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10744633B2 (en) | 2015-07-31 | 2020-08-18 | Koki Holdings Co., Ltd. | Power Tool |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE857415C (de) | 1943-04-10 | 1952-11-27 | Calor Emag Elek Zitaets Ag | Verzoegerte Nullspannungsausloesung fuer Wechselstrom |
DE2626003A1 (de) * | 1976-06-10 | 1977-12-22 | Schulte Elektrotech | Mehrpoliger druckschalter mit ueberstromausloesung und unterspannungs- bzw. phasenausfallschutz |
DE2800041A1 (de) * | 1978-01-02 | 1979-07-12 | Ellenberger & Poensgen | Mehrpoliger null- oder unterspannungsschalter |
EP0174382B1 (de) * | 1984-09-11 | 1988-08-24 | Heinrich Kopp GmbH & Co. KG | Variable Schaltbox für Motor(schutz-)schalter und Unterspannungsauslösung zum Einbau in Elektrowerkzeuge od. dgl. |
CH680174A5 (de) | 1990-05-23 | 1992-06-30 | Weber Ag | |
JP3104950B2 (ja) | 1994-05-23 | 2000-10-30 | アルプス電気株式会社 | スイッチ装置 |
DE4437020A1 (de) | 1994-10-17 | 1996-04-18 | Marquardt Gmbh | Elektrischer Schalter |
US5525948A (en) | 1994-12-02 | 1996-06-11 | Poulsen; Peder U. | Manually operated, electromagnetically resettable safety switch |
JP2000152494A (ja) | 1998-11-12 | 2000-05-30 | Alps Electric Co Ltd | オートoff、あるいはオートon/off機能を備えた電子機器 |
EP1168390A1 (de) | 2000-06-30 | 2002-01-02 | SIGNAL LUX ITALIA S.p.A. | Selbst ausschaltender elektrischer Schalter |
CN2531512Y (zh) * | 2002-02-04 | 2003-01-15 | 沈新权 | 电动工具开关 |
DE102004003048A1 (de) * | 2003-01-22 | 2004-08-05 | Marquardt Gmbh | Elektrisches Verbindungselement, insbesondere für Elektrowerkzeugschalter |
DE102006006409A1 (de) | 2006-02-13 | 2007-08-16 | Wolf Neumann-Henneberg | Schalter |
CN101882523A (zh) * | 2009-05-08 | 2010-11-10 | 浙江佳奔电子有限公司 | 带停电重启保护功能的扳机开关 |
CN102097224B (zh) * | 2011-01-26 | 2013-05-29 | 青岛埠元电子有限公司 | 自锁式安全开关及手持式料理棒 |
-
2014
- 2014-10-20 DE DE201410015410 patent/DE102014015410A1/de not_active Withdrawn
- 2014-10-22 WO PCT/EP2014/072650 patent/WO2015059191A1/de active Application Filing
- 2014-10-22 EP EP14793042.4A patent/EP3061114B1/de not_active Not-in-force
- 2014-10-22 CN CN201480069806.4A patent/CN106062916B/zh active Active
-
2016
- 2016-04-14 US US15/098,731 patent/US10354822B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
CN106062916B (zh) | 2019-09-27 |
DE102014015410A1 (de) | 2015-04-23 |
US20160293369A1 (en) | 2016-10-06 |
EP3061114B1 (de) | 2018-03-07 |
CN106062916A (zh) | 2016-10-26 |
WO2015059191A1 (de) | 2015-04-30 |
US10354822B2 (en) | 2019-07-16 |
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Inventor name: HACKE, FRANK Inventor name: FIEDERER, KLAUS Inventor name: BAUMGAERTNER, FRANK Inventor name: HAFEN, DANIEL Inventor name: RUF, ALEXANDER Inventor name: LAUER, CLEMENS |
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