EP2179427B1 - Appareil de commande, en particulier du type commutateur électrique, pour outils manuels électriques - Google Patents

Appareil de commande, en particulier du type commutateur électrique, pour outils manuels électriques Download PDF

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Publication number
EP2179427B1
EP2179427B1 EP08801111A EP08801111A EP2179427B1 EP 2179427 B1 EP2179427 B1 EP 2179427B1 EP 08801111 A EP08801111 A EP 08801111A EP 08801111 A EP08801111 A EP 08801111A EP 2179427 B1 EP2179427 B1 EP 2179427B1
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EP
European Patent Office
Prior art keywords
section
housing
cooling body
control device
heat
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.)
Active
Application number
EP08801111A
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German (de)
English (en)
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EP2179427A2 (fr
Inventor
Alfons Steidle
Timo Schutzbach
Klaus Fiederer
Gerhard Niklewski
Daniel Hafen
Thomas BRÜNTRUP
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Marquardt GmbH
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Marquardt GmbH
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Publication date
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Priority to SI200830753T priority Critical patent/SI2179427T1/sl
Publication of EP2179427A2 publication Critical patent/EP2179427A2/fr
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Publication of EP2179427B1 publication Critical patent/EP2179427B1/fr
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Classifications

    • 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
    • H01H9/52—Cooling of switch parts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
    • H01H1/26—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting with spring blade support
    • 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
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/42—Driving mechanisms, i.e. for transmitting driving force to the contacts using cam or eccentric
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/46—Driving mechanisms, i.e. for transmitting driving force to the contacts using rod or lever linkage, e.g. toggle
    • 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 a control device according to the preamble of patent claim 1.
  • Such controllers are mainly used as electrical switches for a power hand tool with an electric motor, such as for a cordless and / or power tool, use,
  • These power tools may be drills, grinders, saws, planer, angle grinder o. The like. Act ,
  • an electrical switch for a power tool which has a housing for receiving an electrical circuit arrangement for controlling and / or regulating the electric motor.
  • a circuit arrangement may be an electronic component for the control and / or regulation of the rotational speed of the electric motor, for example by pulse width modulation.
  • the control and / or regulation of the freewheel for example by diodes, the torque, for example by current control, or other characteristics such as automatic shutdown, automatic control, electronic braking, electronic soft start of the electric motor o.
  • the circuit located in the housing now again contains at least one component, such as a power semiconductor, a power transistor, a MOS-FET, a triac o. The like., Which serves for the corresponding control and / or regulation of the flowing through the component to the electric motor electrical load current.
  • the component Due to its function as a power component, the component generates a power loss in the form of heat, which is dissipated from the housing. Likewise, other parts of the circuit can generate heat loss. To dissipate this heat is a heat sink located on the outside of the housing, with which the heat-generating component and / or at least parts of the circuit arrangement are in heat-conducting connection. It has now been found that in some cases, in particular in the case of continuous load and / or blocking of the power tool in the case of previous heat sinks, the heat dissipation is not sufficient. It is obvious that in such cases, the reliability of the switch and thus the power tool suffers.
  • a control device is described with a housing in which a circuit arrangement is located with a heat-generating component.
  • a heat sink is provided, which has two areas.
  • the first region of the heat sink is arranged in the housing, such that the heat-generating component is in direct connection with the first region, that is attached to the first region in heat-conductive connection, the second portion of the heat sink protrudes out of the housing, in the Art a two-sided lateral exit from the housing.
  • a comparably trained heat sink is also in the US 6,198,631 B1 shown.
  • an electrical switch with a housing for a power tool is known.
  • a contact system comprising a fixed contact and a cooperating, on a contact bearing movably arranged switching contact.
  • An actuator disposed on the housing is used for switching action on the contact system.
  • the contact system consists of several parts. In some cases, for example, with slim handles of a two-hand angle grinder, also the space for receiving the switch in the handle is not sufficient.
  • Soh requiredlich is from the DE 36 38 952 A1 an electrical switch with a housing for a power tool known.
  • the housing contains a contact system.
  • An arranged on the housing, movable in an actuating direction actuator is used for switching impact on the contact system.
  • the switch has a Einschaltsperr adopted for the actuator, wherein the Einschaltsperr adopted comprises a ramp member on the housing and a locking member on the actuator, such that the actuator is displaceable approximately transversely to the actuating direction to overcome the Einschaltsperr observed, in particular the casserole member.
  • a metal bolt is used as a locking member, which is a relatively expensive item.
  • the invention has for its object to further develop the heat sink such that the removal of heat from the housing is improved.
  • an effective cooling of the power semiconductor in Treasurelast- and / or blocking case by utilizing the cooling air flow in the device and / or observance of the cramped space in the handle and / or consideration of the simple possibility of contacting between switch and motor should be given.
  • part of the second region of the heat sink projecting into the cooling air flow is configured like a wing.
  • the wing-like second region is designed to be angled away from the remaining second region.
  • the switch in the power tool housing and preferably located in the handle.
  • the second region of the heat sink extends into the region of the cooling air flow for the power tool, which serves primarily for cooling the electric motor. Contrary to previous embodiments, the second area is thus continued until the cooling air flow.
  • the heat sink can be adapted to the dissipated heat accordingly.
  • the heat sink is designed stepped in terms of its thickness.
  • the first region of the heat sink is provided, above all in the region of the power semiconductor and / or the power component, with a higher material thickness in order to further improve heat dissipation.
  • the wing-like second area projects into the cooling air flow for the power tool. Furthermore, the wing-like second region of the heat sink with slots, apertures, openings o. The like. Be provided to increase the surface and / or facilitate the air flow for the passage of air. Such an embodiment is adapted to the space in the power tool in a special way and optimizes the heat dissipation.
  • the mounting of the heat sink in the housing can be accomplished in a simple manner that the second region is angled at the exit from the housing with respect to the first region. It is advisable that the angle is approximately 90 °.
  • the second area expediently bears against the wall of the housing.
  • a simple mounting of the heat sink is given when the heat sink is attached, for example by means of latching and / or snap connections for the second area on the housing.
  • the housing may include a base and a lid.
  • the heat sink is attached to the base.
  • the cover can be fixed by means of latching and / or snap connections on the base, in which case the second region of the heat sink has a recess for the latching and / or snap connection between the cover and the base.
  • the angle between the wing-like second region and the remaining second region is between 90 ° and 160 °, in particular approximately 120 °.
  • the second wing-like area projects beyond the housing.
  • a further optimization of heat dissipation can be achieved in that the wing-like second region is at least partially provided with a higher material thickness.
  • the heat sink For cost-effective manufacturability of the heat sink is largely formed in one piece. It makes sense to make the heat sink in the manner of a stamped and bent part of a milled and / or rolled sheet metal strip. Furthermore, the region of higher material thickness on the heat sink by plating, welding, soldering o. The like., To be made. As a material for the heat sink are good thermally conductive materials such as copper, aluminum, steel o. The like. At.
  • the heat sink is designed in a stepped manner with a higher material thickness in the region of the power semiconductor.
  • the arrangement of the heat sink in the switch takes place with a discharge on both sides of the switch housing and a continuation of the heat sink into the area of the device cooling air flow.
  • the continuation may be provided with slots for the passage of air to increase the surface area and / or facilitate the air flow.
  • the contact bearing is designed as a resilient bearing, such that the contact force is generated by the contact bearing itself.
  • the contact force is generated by the spring force of the contact bearing.
  • a control and / or regulating electronics for the power tool can be arranged in the housing of the switch. Conveniently, then in the housing a circuit board for receiving electrical and / or electronic components for the control and / or control electronics is located. For ease of assembly, the contact bearing may be soldered directly to the circuit board.
  • the contact bearing is provided with an approximately U-shaped section.
  • This U-shaped section has a certain elasticity, which in turn serves to generate the contact force making up the spring force.
  • the U-shaped section is arranged approximately parallel to the printed circuit board.
  • a leg of the U-shaped portion may be inserted by means of at least one protruding plug foot on the circuit board. It then makes sense further that the leg is soldered to the plug-in, with the circuit board.
  • the leg opposite one leg of the U-shaped portion has a projecting approximately perpendicularly from the other leg bearing surface, wherein the bearing surface adjoins the end of the other leg of the U-shaped portion.
  • a simple production of the bearing surface is given by the bearing surface consists of an approximately 180 ° folded portion of the other leg.
  • the switching contact can be configured in a functionally reliable manner as a pivotable rocker with two lever arms.
  • the switching contact has a bulge between the lever arms for pivotal mounting of the rocker on the bearing surface.
  • the actuator acts via an actuator by means of a lug on the two lever arms for pivoting the switch contact.
  • the switching contact acts in this further embodiment together with the actuating member, that a sliding movement transverse to the opening and / or closing movement of the switching contact can be effected. This results in a kind of forced tear of the welded contacts.
  • a bus bar may be connected from one leg of the U-shaped section as an electrical connection to one of the housing projecting electrical connection, lead to a solder connection on the circuit board o.
  • the busbar is expediently approximately perpendicular from one leg of the U-shaped section.
  • the busbar and / or the U-shaped section and / or the bearing surface and / or the plug-in foot are integrally formed, preferably in the manner of a stamped and bent part.
  • materials for the contact bearing are well electrically conductive materials such as copper, copper beryllium o. The like., Suitable.
  • a resilient bearing generates the contact force, whereby a compression spring or a leaf spring is eliminated.
  • the bearing is soldered directly to the PCB.
  • a forced tear is effected via a sliding movement transversely to the opening and / or closing movement.
  • the actuator acts on a substantially vertically movable plunger.
  • the plunger is articulated to a substantially horizontally movable slide.
  • the slider in turn acts on the contact system for switching such that the movement of the actuator is deflected approximately in the transverse direction to act on the contact system.
  • Such a switch has a narrow design and is therefore suitable for use in confined spaces.
  • a spring is arranged on the slide, which may be a kind of horizontal compression spring.
  • this spring With the help of this spring, a negative force-displacement curve is generated when switching on the contact system. This results in a high initial force and a low holding-end force on the plunger or on the actuator.
  • the user feels when switching on the power tool a significant pressure point, while due to the low holding-end force fatigue-free continuous operation of the power tool for the user is possible.
  • the spring is in a chamber-like receptacle on the slider. The spring is held to the contact system associated side of the chamber by means of a fixed stop, whereby the slide is moved upon actuation of the actuating member against the force of the spring.
  • the contact system comprises a fixed contact and a cooperating, on a contact bearing movably arranged switching contact.
  • the switching contact can be configured as a pivotable rocker with two lever arms.
  • the actuator acts via an actuator by means of a lug on the two lever arms for pivoting the switch contact.
  • the actuator is on the slide, on the side facing away from the plunger, arranged.
  • the joint between the plunger and the slider is designed as a fork with a handle.
  • the fork is rotatably supported by pins on the plunger, and the stem is in turn mounted by means of a pin rotatably mounted on the slide.
  • the hinge in particular the pins of the joint, consist of a first plastic and the plunger and / or the slide of a second plastic, wherein the two plastics do not connect with each other.
  • the joint between the plunger and the slide can then be made by assembly spraying essentially in one operation.
  • the two non-interconnecting plastics are injected into the injection mold for the joint as well as for the plunger and / or the slide simultaneously or sequentially.
  • a montagegespritzte deflection of the actuating movement is created.
  • a negative force-displacement curve is generated when switching on.
  • the locking member consists of a plastic web.
  • the plastic web is integrally molded on the actuator during its manufacture substantially in one operation.
  • the plastic web may consist of the same plastic as the actuating member.
  • switch-on lock may be arranged for the locking member on the Einschaltsperr Surprise. This is designed such that the locking member is inserted in the actuated position of the actuator in the lock insertable and in the lock.
  • the plastic web according to the invention is thus suitable both for switch-on and for locking.
  • the actuator is pivotally and slidably disposed on the housing at one end. At the other end, the actuator engages over the Einschaltsperr adopted in the manner of a hollow cap. It is then advisable that the plastic web is molded on both sides of the inner walls of the hollow actuator.
  • a replacement for the previously used metal bolt is made by a plastic web.
  • the advantages achieved by the invention are in particular that more heat is absorbed by the thickening of the heat sink in the region of the power semiconductor in the blocking case and subtracted from the power semiconductor. Due to the larger cross section, significantly more heat can be transported away and forwarded to the area of the cooling air flow even in the case of continuous load. This allows a lower specified and much cheaper power semiconductor can be used. This also results in a cost savings. In addition, the reliability of the control unit and / or the switch is improved by the improved dissipation of heat loss.
  • the advantages achieved by the invention are in particular that a cost-effective contact system is created.
  • This is how two-pole switches become two Pressure and / or tension and / or leaf springs for generating the contact pressure saved together with assembly.
  • the contact system opens and / or closes independently of the actuation speed.
  • the contact force is built up immediately after closing.
  • the direct connection to the electronic circuit board saves installation space in the switch. Additional connecting elements, such as contact springs, between the mechanical contact system and the electronics thereby eliminated.
  • the contact system may have a sliding effect, so that the contact system is equipped with a forced tear. Slightly welded contacts can thus be more easily torn off and / or released by a movement transversely to the closing direction.
  • a favorable force-displacement characteristic is given to the actuator.
  • the generation of a low holding force on the actuator counteracts fatigue of the operator.
  • the low holding force reduces the likelihood that the user inadvertently gets close to the switch-off point during fatigue.
  • a higher turn-on force is necessary.
  • Such a negative force-displacement characteristic in which the initial force is higher than the final force, ensures that the switch-on is usually carried out in one go to the end position.
  • the deflection mechanism from vertical to horizontal movement which can be realized by means of three movably molded parts, together with the associated compression springs, enables the desired force characteristic.
  • FIG. 1 there is shown an electrical switch 1 suitable for use with an electric hand tool with an electric motor, such as for a cordless and / or mains power tool.
  • the electric tools can be, for example, drills, grinders, saws, planers, angle grinders or the like.
  • the switch 1 is suitable for use in the handle of a two-hand angle grinder.
  • the switch 1 has a housing 2 for receiving a movable switching contact 8 and a fixed contact 9 comprehensive contact system 7 (see Fig. 3 ).
  • a manually movable by the user by pivoting actuator 3 is arranged on the housing 2, a manually movable by the user by pivoting actuator 3 is arranged.
  • the actuator 3 acts in its operation on the switching contact 8 for switching the contact system 7, so that the power tool by means of the actuator 3 on and / or off.
  • On the housing 2 are still electrical connections 4 for connecting the switch 1 to a power source and electrical connections 5 for connecting the switch 1 to the electric motor.
  • the circuit arrangement serves as control electronics for speed variation of the electric motor.
  • the circuit arrangement has at least one associated, heat-generating power component 10 (see Fig. 2 ), such as a power semiconductor, a power transistor, a MOS-FET, a triac o. The like., On, whereby a corresponding control and / or regulation of the flowing through the power component 10 to the electric motor electrical load current is carried out.
  • the heat-generating power component 10 and / or at least parts of the circuit arrangement with a heat sink 6 located at least partially on the outside of the housing 2 in heat-conducting connection.
  • the heat sink 6 has at least two regions 11, 12, which are arranged approximately in the shape of a U's.
  • the first region 11 of the heat sink 6 is arranged in the housing 2 such that the heat-generating component 10 and / or at least parts of the circuit arrangement are fastened to the first region 11 in heat-conducting connection and thus are in direct connection with the first region 11.
  • the second region 12 of the heat sink 6 protrudes from the housing 2 in the manner of a two-sided lateral exit from the housing 2, as can be seen from the Fig. 1 recognizes.
  • the switch 1 is arranged in the handle of the power tool having a power tool housing.
  • the second region 12 of the heat sink 6 extends into the region of the cooling air flow for the power tool, which serves to cool the electric motor. Because of this continuation 12 'of the second region 12, the cooling air flow thus simultaneously serves to cool the switch 1.
  • the heat sink 6 is designed stepped in terms of its thickness.
  • the first region 11 of the heat sink 6 in the region of the power component 10 is provided with a higher material thickness d1.
  • the material thickness d2 in the second region 12, 12 ' is correspondingly lower.
  • a part of the second region 12 'of the heat sink 6 is designed wing-like, so that this protrudes in a better and adapted manner in the cooling air flow for the power tool.
  • the wing-like second region 12 ' is recognizable arranged on the front side of the heat sink 6.
  • other parts of the second region 12 can be designed in the manner of a wing, these further vanes 12" being located on the front upper side of the heat sink 6.
  • the second region 12 'of the heat sink 6 is provided with slots 13, apertures, openings o. The like. To increase the surface and / or facilitate the air flow for the passage of air.
  • it is is a stepped heat sink 6, which is thickened in the region of the triac 10 and has vents 13 on the front wings 12 '.
  • the second region 12 is angled with respect to the first region 11 at an edge 32.
  • This bend 32 is according to Fig. 1 at the outlet of the heat sink 6 from the housing 2.
  • the bend 32 is approximately 90 °, so that the second region 12 then rests against the respective wall of the housing 2.
  • the heat sink 6 is secured by means of latching and / or snap connections 33 for the second region 12 on the housing 2.
  • the housing 2 for the switch 1 comprises a base 34 and a cover 35.
  • the heat sink 6 is secured by means of latching and / or snap connections 33 on the base 34.
  • the lid 35 is secured by means of latching and / or snap connections 36 on the base 34.
  • the second region 12 of the heat sink 6 has a recess 54 for receiving the latching and / or snap connection 36 between the cover 35 and the base 34.
  • the wings 12 ', 12 project in an adapted manner into the flow of cooling air in accordance with the conditions in the power tool housing Fig. 1 the wing-like second region 12 ', 12 "projecting at an angle from the remaining second region 12.
  • the angle between the regions 12, 12' and / or the regions 12, 12" is between 90 ° and 170 °. In a two-hand angle sander switch, an angle of about 120 ° has proven to be particularly optimal.
  • Heat removal is also particularly favorable if the second wing-like region 12 ', 12 "projects beyond the housing 2. Further optimization of the heat removal can finally be achieved by at least partially providing the wing-like second region 12' with a higher material thickness d3 is how in Fig. 2 you can see.
  • the heat sink 6 is according to Fig. 2 designed largely in one piece.
  • a heat sink 6 can be made of a milled or rolled sheet metal strip made of copper, aluminum, steel o. The like. In the manner of a stamped and bent part.
  • the areas with Higher material thickness d1, d3 on the heat sink 6 can be prepared by plating, welding, soldering o. The like. Of the other material.
  • the contact system 7 for the switch 1 is closer in Fig. 3 to see.
  • the actuator 3 cooperates with an actuator 17 for switching the contact system 7, as will be explained in more detail below.
  • the movable by means of the actuator 17 via a projection 18 switching contact 8 is pivotally mounted on a contact bearing 14.
  • the contact bearing 14 is designed as a resilient bearing, so that the contact force is generated by the spring force of the contact bearing 14 itself.
  • the contact bearing 14 has an approximately U-shaped configured portion 15.
  • a circuit board 16 which serves to receive electrical and / or electronic components for the control and / or control electronics for the power tool.
  • the U-shaped portion 15 is arranged approximately parallel to the circuit board 16 and the contact bearing 14 is soldered with its U-shaped portion 15 directly to the circuit board 16.
  • one leg 37 of the U-shaped portion 15 is inserted by means of at least one protruding plug foot 39 on the circuit board 16. The leg 37 is then soldered to the plug-in foot 39 with the circuit board 16.
  • the bearing surface 40 adjoins the end of the further leg 38 of the U-shaped portion 15 and consists of a folded about 180 ° portion of the other leg 38.
  • the switching contact 8 is designed as a pivotable rocker with two lever arms 41, 42.
  • the switching contact 8 has a bulge 43 between the lever arms 41, 42 for pivotal mounting of the rocker on the bearing surface 40.
  • the actuator 3 then acts on the actuator 17 by means of the projection 18 on the two lever arms 41, 42 for pivoting the switch contact 8 a.
  • the actuating member 3 cooperates via a sliding surface 19 on the actuating member 17 with the switching contact 8 such that a sliding movement for the switching contact. 8 is generated transversely to the opening and / or closing movement when switching the contact system 7. Due to this sliding movement, a kind of forced tear for the switching contact 8 is effected, so as to counteract welding of the contacts 8, 9.
  • a contact system 7 is provided with resilient bearing 14, wherein the resilient bearing 14 generates the force to open and / or close the contacts 8, 9, and wherein a forced tear takes place via the sliding movement.
  • a bus bar 44 is disposed outgoing from the one leg 37 of the U-shaped portion 15, which as an electrical connection to the projecting out of the housing 2 electrical connection 5 (see Fig. 1 ), to a solder joint not shown on the circuit board 16 o.
  • the like. Serves.
  • the busbar 44 is approximately perpendicular from the one leg 37 of the U-shaped portion 15 from.
  • the busbar 44 and / or the U-shaped section 15 and / or the bearing surface 40 and / or the plug-in foot 39 are designed in one piece in the manner of a stamped and bent part.
  • the thus configured in the manner of a multifunctional contact bearing 14 may consist of copper, copper beryllium o. The like. Exist.
  • Fig. 4 is closer to see the configuration for the switching action of the actuator 3 on the contact system 7.
  • the actuator 3 acts during its operation by the user first on a direction of arrow 30 substantially vertically movable plunger 20 a.
  • the plunger 20 is articulated by means of a joint 21 to a direction of arrow 31 substantially horizontally movable slide 22.
  • the slider 22 is the actuator 17, and that on the side facing away from the plunger 20, so that the slider 22 acts on the contact system 7 for switching by the movement of the actuator 3 is deflected approximately in the transverse direction for acting on the contact system 7 ,
  • a spring 23 is arranged in the manner of a horizontal compression spring. As a result, a negative force-displacement characteristic when switching on the contact system 7 can be generated. This means that there is a high initial force and a low holding end force on the plunger 20 and on the actuating member 3.
  • the spring 23 is located in a chamber-like receptacle 45 on the slider 22 and is on the contact system. 7 associated side of the chamber 45 held by a fixed stop 46. As a result, the slider 22 is then moved against the force of the spring 23 when the actuating member 3 is actuated.
  • the joint 21 between the plunger 20 and the slider 22 is configured as a fork 47 with a handle 48.
  • the fork 47 is rotatably supported by means of pins 49 on the plunger 20 and the handle 48 is rotatably mounted on the slider 22 by means of a pin 50.
  • the movable joint 21 between the plunger 20 and the slider 22 is made in a simple manner by mounting spraying substantially in one operation.
  • the two plastics which do not connect to one another are then injected simultaneously or successively into the injection mold for the joint 21 and for the tappet 20 and / or the slide 22.
  • the switch 1 is equipped with a Einschaltsperr worn 24 for the actuator 3.
  • the Einschaltsperr worn 24 acts such that the actuating member 3 approximately transversely to the actuation direction according to arrow 27 to overcome the Einschaltsperr owned 24, in particular of the casserole member 25, Thus, in the direction of arrow 28 is displaced.
  • the actuating member 3 at one end 52 (see Fig. 1 ) arranged pivotably and displaceably on the housing 2.
  • the actuating member 3 engages in the manner of a hollow Cap on the other end 53, the Einschaltsperr issued 24, as particularly well in Fig.
  • the locking member 26 can be inserted in the actuated position of the actuator 3 in a corresponding lock 29, which is also arranged on the Einschaltsperr Anlagen 24, whereby the actuator 3 is held in the lock 29 for the continuous operation of the power tool.
  • the locking member 26 consists of a plastic web, which replaced the previously used metal bolt and easier assembly is achieved.
  • the plastic web 26 is made of the same plastic as the actuator 3 and is molded onto the actuator 3, and that is the plastic web 26 molded on both sides of the inner walls 51 of the hollow actuator 3.
  • the Sperrkulisse for the Einschaltsperre 24 and the lock 29 is also adapted accordingly.
  • the invention is not limited to the described and illustrated embodiment. Rather, it also encompasses all expert developments within the scope of the invention defined by the claims.
  • the invention can not only be used in power tool switches, but can also be found on other switches, such as those for household electrical appliances, electrical gardening equipment, machine tools o. The like., Use.
  • the invention can also control devices with or without housing, for example, for the power electronics of the power tool, for motor vehicles o. The like., Use.

Abstract

L'invention concerne un appareil de commande, en particulier un commutateur électrique (1) destiné à être utilisé sur un outil manuel électrique, par exemple un outil électrique alimenté par accumulateur et/ou le réseau, par exemple une foreuse, une meuleuse, une scie, un rabot, une meuleuse d'angles ou similaire, qui présente un moteur électrique. Le commutateur (1) présente un boîtier (2) pour recevoir au moins un composant de puissance dégageant de la chaleur, par exemple un transistor de puissance, un MOS-FET, un triac ou similaire, qui est disposé en particulier dans un circuit électrique. Le circuit électrique sert par exemple à commander et/ou à réguler le moteur électrique par une commande et/ou une régulation appropriée du courant électrique de charge qui s'écoule dans le composant de puissance en direction du moteur électrique. Le composant de puissance dégageant de la chaleur et/ou au moins des parties du circuit sont reliés de manière thermiquement conductrice à un corps de refroidissement (6) situé sur le côté extérieur du boîtier (2). Le corps de refroidissement (6) présente au moins deux parties, la première partie du corps de refroidissement (6) étant disposée dans le boîtier (2) de telle sorte que le composant dégageant de la chaleur et/ou au moins des parties du circuit soient reliés directement à la première partie, la deuxième partie (12) du corps de refroidissement (6) débordant hors du boîtier (2), en particulier sous la forme d'une sortie latérale située sur les deux côtés du boîtier (2). Par ailleurs, on crée un commutateur électrique (1) qui présente un porte-contact élastique, le déplacement de l'organe d'actionnement (3) étant dévié sensiblement dans la direction transversale par rapport à l'action sur le système de contact. Enfin, le commutateur électrique (1) peut présenter un dispositif (24) de blocage de branchement qui présente un organe de blocage, l'organe de blocage étant constitué d'une nervure en matière synthétique.

Claims (16)

  1. Appareil de commande, notamment commutateur électrique (1) destiné à un outillage électroportatif comportant un moteur électrique, et un boîtier (2) pour recevoir au moins un composant (10) dégageant de la chaleur, ce composant (10) dégageant de la chaleur étant relié en conduction thermique à un radiateur (6) se trouvant sur le côté extérieur du boîtier (2),
    - le radiateur (6) ayant au moins deux régions (11, 12),
    - la première région (11) du radiateur (6) se trouvant dans le boîtier (2) de façon que le composant (10) dégageant de la chaleur soit en liaison de conduction thermique directe avec la première région (11), et
    - la seconde région (12) du radiateur (6) dépasse du boîtier (2), appareil de commande caractérisé en ce qu' une partie de la seconde région (12', 12") du radiateur (6) a une forme d'ailette, et
    - la seconde région (12', 12") en forme d'ailette est pliée par rapport à au restant de la seconde région (12).
  2. Appareil de commande selon la revendication 1,
    caractérisé en ce que
    le composant (10) dégageant de la chaleur fait partie d'un circuit électrique pour commander ou réguler le moteur électrique par la commande ou la régulation correspondante du courant de charge électrique traversant le composant (10) pour alimenter le moteur électrique, et
    le composant (10) dégageant de la chaleur est un transistor de puissance, un transistor MOSFET ou un Triac.
  3. Appareil de commande selon la revendication 1 ou 2,
    caractérisé en ce que
    le commutateur (1) est utilisé pour son application à un outillage électroportatif muni d'un boîtier, et
    - la seconde région (12) de l'organe de refroidissement (6) arrive jusque dans la région de la veine d'air de refroidissement du moteur électrique de l'outillage électroportatif.
  4. Appareil de commande selon la revendication 1, 2 ou 3,
    caractérisé en ce que
    la seconde région (12) de l'organe de refroidissement (6) sort des deux côtés latéralement du boîtier (2).
  5. Appareil de commande selon l'une des revendications 1 à 4, caractérisé en ce que
    le radiateur (6) est étagé en épaisseur, et
    - la première région (11) de l'organe de refroidissement (6) dans la région du composant de puissance (10) a une plus forte épaisseur de matière.
  6. Appareil de commande selon l'une des revendications 1 à 5, caractérisé en ce que
    la seconde région (12', 12") en forme d'ailette pénètre dans la veine d'air de refroidissement du moteur électrique.
  7. Appareil de commande selon l'une des revendications 1 à 6, caractérisé en ce que
    la seconde région (12') en forme d'ailette de l'organe de refroidissement (6) comporte des fentes (13), des passages ou des ouvertures pour la traversée de l'air pour augmenter la surface et/ou faciliter le passage de la veine d'air.
  8. Appareil de commande selon l'une des revendications 1 à 7, caractérisé en ce que
    la seconde région (12) à la sortie du boîtier (2) est recourbée par rapport à la première région (11),
    - la seconde région (12) est appliquée contre la paroi du boîtier (2), et
    - l'organe de refroidissement (6) est fixé au boîtier (2) par des liaisons par enclipage et/ou verrouillage (33) de la seconde région (12) au boîtier (2).
  9. Appareil de commande selon l'une des revendications 1 à 8, caractérisé en ce que
    le boîtier (2) comporte un socle (34) et un couverde (35),
    - l'organe de refroidissement (6) est fixé au socle (34) et le couverde (35) est fixé par des liaisons par enclipage (36) ou accrochage au socle (34) et la seconde région (12) de l'organe de refroidissement (6) a une cavité (54) pour la liaison par accrochage et/ou enclipage (36) entre le couvercle (35) et le socle (34).
  10. Appareil de commande selon l'une des revendications 1 à 9, caractérisé en ce que
    l'angle entre la seconde région (12', 12") en forme d'ailette et la seconde région significative (12) est compris entre 90° et 170°.
  11. Appareil de commande selon la revendication 10,
    caractérisé en ce que
    l'angle entre la seconde région (12', 12") en forme d'ailette et la partie restante de la seconde région (12) correspond à environ 120°.
  12. Appareil de commande selon l'une des revendications 1 à 11, caractérisé en ce que
    la seconde région (12') en forme d'ailette comporte au moins en partie une forte épaisseur de matière.
  13. Appareil de commande selon l'une des revendications 1 à 12, caractérisé en ce que
    de l'organe de refroidissement (6) est pratiquement réalisé en une seule pièce.
  14. Appareil de commande selon l'une des revendications 1 à 13, caractérisé en ce que
    la région de forte épaisseur de matière d'organe de refroidissement (6) est obtenue par plaquage, soudage ou brasage.
  15. Appareil de commande selon l'une des revendications 1 à 14, caractérisé en ce que
    l'organe de refroidissement (6) est en cuivre, en aluminium ou en acier.
  16. Appareil de commande selon l'une des revendications 1 à 15, caractérisé en ce que
    la seconde région (12', 12") en forme d'ailette dépasse du boîtier (2).
EP08801111A 2007-08-07 2008-08-06 Appareil de commande, en particulier du type commutateur électrique, pour outils manuels électriques Active EP2179427B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI200830753T SI2179427T1 (sl) 2007-08-07 2008-08-06 Krmilna priprava, zlasti tipa električno stikalo, za električno ročno orodje

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE102007037234 2007-08-07
DE102007037237 2007-08-07
DE102007037239 2007-08-07
DE102007037236 2007-08-07
PCT/DE2008/001273 WO2009018813A2 (fr) 2007-08-07 2008-08-06 Appareil de commande, en particulier du type commutateur électrique, pour outils manuels électriques

Publications (2)

Publication Number Publication Date
EP2179427A2 EP2179427A2 (fr) 2010-04-28
EP2179427B1 true EP2179427B1 (fr) 2012-07-25

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EP (1) EP2179427B1 (fr)
CN (1) CN101802950B (fr)
SI (1) SI2179427T1 (fr)
WO (1) WO2009018813A2 (fr)

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Publication number Priority date Publication date Assignee Title
DE102011075196A1 (de) * 2011-05-04 2012-11-08 Robert Bosch Gmbh Werkzeugmaschinenschaltvorrichtung
CN104900426B (zh) * 2014-12-31 2018-08-24 徐新生 一种电动工具中的电枢回路及电池组插座
DE102016117783B4 (de) * 2016-09-21 2023-11-16 Johnson Electric Germany GmbH & Co. KG Elektrischer Schalter
US20180093335A1 (en) * 2016-10-04 2018-04-05 Tti (Macao Commercial Offshore) Limited Trigger lock for a miter saw
CN106452219B (zh) * 2016-11-08 2019-11-05 上海拜骋电器有限公司 直流无刷开关
DE102017210467A1 (de) * 2017-06-22 2018-12-27 Robert Bosch Gmbh Handwerkzeugmaschine
WO2019061088A1 (fr) * 2017-09-27 2019-04-04 Changzhou Globe Co., Ltd. Plaque pour le refroidissement d'un outil électrique
DE102018113100A1 (de) * 2018-06-01 2019-12-05 Elrad International D.O.O. Schalter für ein Elektrogerät

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SE456957B (sv) * 1984-04-16 1988-11-14 Electro Matic Staplers Inc Avtryckarstroemstaellarkrets i ett elektriskt handverktyg
NL1000221C2 (en) * 1995-04-25 1996-10-28 Capax B V Double pole switch operated by trigger e.g. for control of hand-held hammer drill
US6198631B1 (en) * 1999-12-03 2001-03-06 Pass & Seymour, Inc. High temperature ground connection
US7400239B2 (en) * 2004-09-03 2008-07-15 Simply Automated, Incorporated Universal control apparatus and methods
TWM279007U (en) * 2005-05-20 2005-10-21 Solteam Electronics Co Ltd A push-button with a compulsory detachment mechanism

Also Published As

Publication number Publication date
SI2179427T1 (sl) 2012-10-30
WO2009018813A3 (fr) 2009-04-09
CN101802950A (zh) 2010-08-11
WO2009018813A2 (fr) 2009-02-12
CN101802950B (zh) 2014-10-22
EP2179427A2 (fr) 2010-04-28

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