EP0322986B1 - Switch, in particular for use as automatic switch - Google Patents

Switch, in particular for use as automatic switch Download PDF

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Publication number
EP0322986B1
EP0322986B1 EP88203033A EP88203033A EP0322986B1 EP 0322986 B1 EP0322986 B1 EP 0322986B1 EP 88203033 A EP88203033 A EP 88203033A EP 88203033 A EP88203033 A EP 88203033A EP 0322986 B1 EP0322986 B1 EP 0322986B1
Authority
EP
European Patent Office
Prior art keywords
leaf spring
housing
switch
switch according
contacts
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.)
Expired - Lifetime
Application number
EP88203033A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0322986A1 (en
Inventor
Daniel Van 't Veen
Jan Bertus Wensink
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.)
Eaton Holding International I BV
Danfoss Power Solutions II BV
Original Assignee
Holec Systemen en Componenten BV
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 Holec Systemen en Componenten BV filed Critical Holec Systemen en Componenten BV
Priority to AT88203033T priority Critical patent/ATE88835T1/de
Publication of EP0322986A1 publication Critical patent/EP0322986A1/en
Application granted granted Critical
Publication of EP0322986B1 publication Critical patent/EP0322986B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H01H71/526—Manual reset mechanisms which may be also used for manual release actuated by lever the lever forming a toggle linkage with a second lever, the free end of which is directly and releasably engageable with a contact structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H23/00—Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button
    • H01H23/02—Details
    • H01H23/12—Movable parts; Contacts mounted thereon
    • H01H23/16—Driving mechanisms
    • H01H23/164—Driving mechanisms with rectilinearly movable member carrying the contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
    • H01H5/04—Energy stored by deformation of elastic members
    • H01H5/18—Energy stored by deformation of elastic members by flexing of blade springs

Definitions

  • the invention relates to a switch, in particular for use as automatic switch, comprising a housing provided with at least one pair of contacts having a fixed and a movable contact, a leaf spring assembly having at least one arm and leaf spring which are hingedly coupled to each other at one end, an end of the leaf spring assembly being coupled to a body supported in the housing and movable relative to the fixed contact, said body bearing the movable contact, and operating means for taking the at least one pair of contacts into a first and/or a second position under the effect of the action of the leaf spring assembly.
  • Switches for use as automatic switch are in practice used mainly as protection against overloading, short circuit and earth leakage currents in electrical energy distribution plants. Although these functions can be combined in one automatic switch, automatic switches which switch off only, for example, in response to earth leakage currents are also found in practice.
  • the contact device In the case of automatic switches which are designed, for example, only for switching off earth leakage currents, the contact device must be designed in such a way that in the current-conducting state of the automatic switch sufficiently high contact pressure is exerted to prevent the contacts from being opened as a result of the forces exerted by a short circuit current. In order to be able to comply with this, the switching mechanism must be made relatively "heavy", it also being necessary for the contacts to be capable of being opened quickly during the occurrence of an earth leakage current. It will be clear that these requirements also have an adverse effect on a simple and reliable design of the automatic switch.
  • leaf springs In contrast to spring systems having drawn and compression springs with switching arms and levers coupled to them, the use of leaf springs make it possible to build switches with a compact construction. Further, leaf springs are used for their relative high force acting in longitudinal direction, the so called bending force.
  • the switch with the leaf spring assembly according to said French Patent Specification 2,057,181 has the disadvantage in that the bending force by the leaf spring acts on four hinge points.
  • the bending force acts directly to the control knob coupled with one end of the leaf spring assembly. Due to the fact that for the use as automatic switch a relatively strong leaf spring is required, for instance to meet the desired switching speed, all the hinge points will be correspondingly heavily loaded and as a matter of fact all need special care.
  • the object of the invention is therefore to produce a switch with a switching mechanism comprising a leaf spring assembly, which is simple in design and compact in construction, is relatively simple and quick to produce and assemble, and with which in particular the requirements for use as an automatic switch can be met.
  • the number of hinge points loaded by the bending force of the leaf spring is reduced to three, and by which a simple and compact construction is achieved.
  • the preferred embodiment of the invention is characterized in that the switch button is hingedly mounted in the housing at a distance from and opposite the leaf spring assembly in the direction of deflection thereof, in such a way that part of the switch button can project at the outside of the housing, while the locking means comprise an arm-shaped locking element, one end of which can act on the at least one arm of the leaf spring assembly, its other end being hingedly connected to the switch button in such a way that on operation thereof a force can be exerted on the leaf spring assembly for moving the body towards or away from the fixed contact, and in which the housing is provided with a first and second stop against which part of the switch button rests, in such a way that the at least one pair of contacts of the switch assumes the first or the second position.
  • the position of the switch button in the preferred embodiment of the invention opposite the leaf spring assembly in the direction of deflection thereof has the advantage in that the at least one leaf spring can be tensioned by exerting a force in transverse direction of the leaf spring assembly, which force is small compared to the force for tensioning the leaf spring from one end thereof, i.e. in longitudinal direction of the leaf spring.
  • the part of the switch button which can project outside the housing is oblong in shape, the first and second stop being formed by opposite walls of a recess disposed in the housing on the side where the switch button can partly project outside, in such a way that in the first position of the at least one pair of contacts the oblong part of the switch button is recessed in the periphery of the housing and is accessible from the outside of the housing via the recess and in the second position that part projects outside the housing.
  • the position of the at least one pair of contacts can thus be deduced from whether or not the oblong part of the switch button is projecting outside.
  • This embodiment has the further advantage that in the first position of the pair of contacts the oblong part of the switch button is situated entirely within the periphery of the housing, which means that inadvertent operation of the switch button, for example, is prevented.
  • the operating means comprise an unlocking element set up in the housing and having mating therewith electrically, hydraulically, and/or pneumatically operable further means, said unlocking element being capable of acting on the locking element in such a way that when the leaf spring assembly is locked in its tensioned first position, the action of the locking element on the at least one arm of the leaf spring assembly can be released by the further means, such that the leaf spring assembly assumes its second position, and in that means being provided for resetting the unlocking element.
  • the switch button can be moved, by means of a spring, for example, into the position in which the oblong part of the switch button projects outside.
  • An embodiment of the switch according to the invention is further characterized in that the unlocking element has a base part hingedly supported by two opposite side faces of the housing and having an arm part which extends in a direction at right angles to the deflection of the leaf spring assembly, and which acts on the locking element, and one or more arm parts extending in the opposite direction, on which the further means can act for tilting the unlocking element about its hinge points.
  • the means for resetting the unlocking element can according to the invention comprise spring means acting thereon or an oblong element connected to the movable body, the free end of said oblong element being capable of acting on the unlocking element.
  • yet another embodiment of the switch according to the invention is characterized in that the housing contains at least one angle lever which is disposed near the movable body hingeing about its bend point in such a way that it acts with one end on the body for retaining the body in the second position against the spring force of the at least one leaf spring, the at least one angle lever being capable of being rotated about its bend point via its other end in such a way with the switch button that the action on the body is released and this body can be moved at a predetermined speed by the spring force of the at least one leaf spring acting thereon for moving the at least one pair of contacts into the first position, and means being provided with which the at least one angle lever can act on the body again after the locking thereof has been released with the switch button.
  • the said means preferably consist of spring means acting on the at least one angle lever.
  • the design of the leaf spring assembly is in that sense dependent on the requirements concerning the contact pressure and switching speed of the contacts, that for a higher contact pressure and higher switching speed the at least one leaf spring will have to possess a greater spring force.
  • the leaf spring system can have, in accordance with European Patent Application 0,322,988, filed by applicant simultaneously with the present patent application, a supporting frame in the frame aperture of which the at least one leaf spring and arm are supported.
  • the fixed contact is provided near an edge of the supporting frame in the frame aperture thereof, a partially so-called closed force leaf spring system is produced, it also being possible advantageously for the body bearing the movable contact of the at least one pair of contacts to be slidably supported in the frame aperture.
  • the at least one arm and leaf spring and also the fixed contact can be fixed directly on the housing.
  • the arm on the one hand, or the leaf spring, on the other, can be coupled to the body, so that the respective other end of the leaf spring assembly is hingedly supported.
  • several leaf springs each acting on one body can be coupled to one arm, but it is also possible to use, for example, a leaf spring made up of several strips, with several arms acting on a body. Of course, it is also possible to use several arms and leaf springs which act separately on a movable body. The connection between arm and leaf spring can be further achieved in a suitable manner.
  • an embodiment of the invention is further characterized in that the at least one arm of the leaf spring assembly is a rectangular wire bracket, over one leg of which a backward-bent end of the at least one leaf spring is disposed, the arm-shaped locking element being provided at its free end with a U-shaped notch by means of which it can engage with said leg of the wire bracket.
  • a wire bracket permits easy mounting of the leaf spring assembly, for example, by means of snap connections.
  • Yet another embodiment of the invention is characterized in that the wire bracket is supported with its other leg hinged in the housing, the other end of the at least one leaf spring being coupled to the movable body.
  • This embodiment has the advantage that for switching several pairs of contacts, for example a phase and a zero contact, one common wire bracket and the operating, locking and unlocking elements acting thereon will be sufficient, while for the phased switching of the contacts, for example the zero contact first, only the element bearing the phase contact need be held by means of the angle lever mechanism and switched on with a predetermined force.
  • connection ends at one side of the housing.
  • the connecting ends are designed as plug-type connecting contacts which project outside the housing, in particular for connecting the switch in detachable fashion to a control panel by means of a plug connection.
  • the connecting ends can also be provided in the usual manner on, for example, terminals.
  • Fig. 1a shows schematically a cross section of a switch according to the invention designed as an automatic switch, with a housing 1.
  • the cross section shown in Fig. 1b through the line I-b-I-b in Fig. 1a shows the leaf spring system used in the automatic switch, comprising for example a rectangular wire bracket 2, whose one leg 3 is hingedly fixed by means of a snap connection to a foot 5 formed in the housing 1.
  • From the other leg 4 of the wire bracket 2 extend two leaf springs 6, 7, which are each hingedly fastened, for example, with a backward-curved end also via a snap connection to the leg 4.
  • connection between the wire bracket 2 and the leaf springs 6, 7 and the foot 5 can be achieved in suitable other ways, for example by using a U-shaped wire bracket in which the leaf springs and the foot are provided with fastening eyes for taking the legs of the wire bracket.
  • the other end of each of the leaf springs 6, 7 is hingedly connected to bodies 8, 9 respectively.
  • the bodies 8, 9 and the housing 1 are designed in such a way that the bodies 8, 9 are slidably supported in the housing. This is possible, for example by providing the bodies 8, 9 with guide rails 11 which fit in grooves 10 recessed in the housing. This is, however, also possible by providing the bodies 8, 9 with grooves 10 and the housing with guide rails 11.
  • a pair of contacts 12, 13 is provided opposite the face on which the leaf spring acts on a body.
  • Each pair of contacts 12, 13 consists of a movable contact 14, 15 connected to the appropriate body and a contact 16, 17 fixed in the housing. In the position shown each pair of contacts 12, 13 is closed, which means that the respective contacts 14, 16 and 15, 17 are in contact with each other.
  • the wire bracket 2 and the leaf springs 6, 7 are virtually in line with each other here, as can be seen in Fig. 1a, which shows a cross section of the leaf spring system along the line I-a-I-a in Fig. 1b.
  • the top right corner of the housing 1 has provided in it an explosion chamber 18, in which guides 19, 20 connected to the respective contacts 14, 16 project, and which form a funnel facing the pair of contacts 12 for guiding a discharge arc occurring between the contacts 14, 16 during the closing or opening thereof.
  • Suitable extinguishing means (not shown) can be accommodated in a known manner in the chamber 18. It will be clear that for the pair of contacts 13 a similar arc-extinguishing device to that for the pair of contacts 12 can be provided in the housing.
  • the switch according to the invention since in a use of the switch according to the invention as an automatic switch in conjunction with a current-limiting switch, which is the subject of the European patent application 0,322,987, filed by applicant, only limited short circuit currents of the order of magnitude of about 100-500 A need be switched off, the explosion chamber can be relatively simple in design, and the design of the contacts themselves is not subject to such strict requirements.
  • the force with which the respective contacts are pressed against each other, the contact force must on the other hand be high, simply to be able to carry the unlimited short circuit current, which is achieved in the following manner.
  • the dimensions of the wire bracket 2 and the leaf springs 6, 7 with their respective bodies 8, 9 are such relative to the distance between the hinge point 21 of the wire bracket 2 at the foot 5 and the fixed contact 16, 17 that the leaf springs in the closed position of the contacts are tensioned, so that the largest component of the spring force acts in the lengthwise direction of the leaf spring and each movable body 8, 9 with its contact 14, 15 is pressed virtually with the full spring force of the leaf spring 6, 7 against the fixed contact 16, 17.
  • the component of the spring force at right angles to the leaf spring surface is thereby very small by comparison with the force in the lengthwise direction thereof.
  • the leaf spring system can be locked in a simple manner in the position shown by means of the arm-type locking element 22, which is hingedly connected to the manually operable switch button 23.
  • the locking element 22 has on its free end a U-shaped notch 24 which engages between the two leaf springs 6, 7 with the leg 4 of the wire bracket 2.
  • the attachment point 25 of the arm-type locking element 22 on the switch button 23 is selected in such a way that in the position of the switch shown, through the component of the spring force at right angles to the leaf spring surface, an anticlockwise couple is exerted on the switch button 23, viewed in the plane of the drawing.
  • the switch button 23 Opposite the attachment point 25 of the locking element 22 the switch button 23 is provided with an oblong, curved projection 26 which rests against a stop 27 of the housing. In this way, via the locking element 22, the oblong projection 26 and the stop 27, the leaf spring system is locked in the position shown.
  • the switch button 23 is connected to the housing so that it hinges about its centre point 28
  • the stop 27 is formed by a raised part projecting in a recess 29 formed in the housing, in such a way that in the switched-on position of the automatic switch shown the projection 26 does not project outside the periphery of the housing 1 and is accessible by hand from the outside only via the part 30 of the recess 29 for operation of the switch button. Inadvertent operation of the switch button is effectively prevented in this way.
  • the housing also contains an angle lever 31 bent at right angles, which is accommodated in the housing near the body 8 and hinges about its bend point 32.
  • the hooked end 34 of the arm part 33 of the angle lever 31 extending in the direction of deflection of the leaf spring in the housing acts on the locking element 22, at the level of the attachment point 25 thereof to the switch button 23.
  • the angle lever can act on a stop 37 formed on the body 8. The working of said angle lever will be explained in greater detail further on in the description with reference to Figs. 2-5.
  • Fig. 1c shows a cross section of the automatic switch along the line I-c-I-c in Fig. 1a.
  • the switch button 23 extends from one side of the housing 1 to the other and is provided with lips 39 between which the locking element 22 is hingedly fastened and with its notch 24 engages with the leg 4 of the wire bracket 2.
  • an unlocking element is provided under the wire bracket for releasing the lock of the wire bracket 2 and the leaf 6, 7 other than with the switch button 23.
  • This unlocking element consists of an oblong base part 40 which is rotatably supported in the housing on the opposite walls thereof by means of bosses 41 projecting in the housing.
  • the unlocking element has an arm part 42 extending in the direction of the locking element 22 and two arm parts 43, 44 extending in the opposite direction.
  • the armatures of two electromagnets 45, 46 accommodated in the housing can act on the ends of said arm parts 43, 44 respectively, thereby permitting the unlocking element to be rotated about its support points.
  • a printed circuit board 54 provided with the necessary electronic components in the housing 1.
  • electromagnets instead of electromagnets, other suitable electrically, hydraulically or pneumatically operated means can act on the arm parts 43, 44 for automatically operating the unlocking element.
  • Fig. 1a shows the electromagnet 46 in side view, the action of the armature 48 on the arm part 44 of the unlocking element being clearly visible.
  • the arm part 42 acts on a stop 49 attached to the locking element 22 at the side thereof facing away from the U-shaped notch 24, for example a pin projecting sideways from the locking element 22 in the direction of the arm part 42.
  • the function and working of this unlocking element will be explained in greater detail further on in the description also with reference to Figs. 2 - 5.
  • connecting ends 50 projecting to the outside if necessary.
  • These connecting ends 50 can be designed as required, for example, as plug-type connecting contacts such as plug pins for connecting the automatic switch with a plug connection to a control panel of an electric cabinet, but they can also be completed as connecting terminals, accommodated in the housing or attached to it on the outside, for connecting the automatic switch, for example, via a screw connection (not shown).
  • the connecting ends 50 are connected to the switch contacts in the switch and, for example, printed circuit board 54, for the sake of clarity the connection of the movable contact 14 not being shown in the cross section according to Fig. 1a.
  • Fig. 1d shows the view of the housing seen from the side where the connecting ends 50 and the hook 52 project outside. The working of the switch will now be explained with reference to Figs. 2 to 5, which show a cross section through the automatic switch according to Fig. 1a.
  • spring means can be disposed to act in such a way on the switch button that they exert a clockwise couple on the switch button, viewed in the plane of the drawing.
  • spring means can in the known manner comprise, for example, a rotary spring disposed in the hinge point 28 of the switch button, or a helical leaf or wire spring, but also, for example a draw spring (not shown) acting on the attachment point 25 of the locking element 22.
  • the force exerted by this spring on the switch button 23 must be such that the projection 26 thereof rests against the stop formed by the wall 56 of the recess 29.
  • the angle lever 31 is provided with spring means which cause the angle lever to rotate anticlockwise, viewed in the plane of the drawing, about its bend point 32.
  • These spring means can also, for example, in the known manner consist of a rotary or coil spring (not shown) acting in the bend point 32 on the angle lever.
  • the rotation of the angle lever is limited through the fact that the arm part 35 acts on the movable body 8.
  • the arm part 42 of the unlocking element at its end 55 is bent at such an angle in the direction away from the fixed contact 16 that in the deflected state of the leaf spring 6 shown the stop 49 of the locking element 22 can act on it.
  • the projection 26 of the switch button 23 here projects out of the housing, which produces the visual representation that the automatic switch is in the switched-off state, i.e. in the state in which the contacts of the pair of contacts 12, 13 are separated from each other.
  • the automatic switch can then be switched on by moving the switch button 23 in the direction of the stop 27 by means of the projection 26 projecting outside the housing, thus anticlockwise viewed in the plane of the drawing.
  • the locking element 22 is thereby moved in the direction indicated by the arrow 57, causing such force to be exerted on the leg 4 of the wire bracket 2 that the body 8 is moved in the direction of the fixed contact 16, until the stop 37 rests against the end 36 of the angle lever 31, so that the situation shown in Fig. 3 arises.
  • the leaf spring 6 is here virtually in its tensioned one position, in which the leaf spring and the wire bracket extend virtually in line with each other.
  • the contacts 14, 16 are not in contact with each other here.
  • the end 34 of the angle lever 31 here is against the end of the locking element 22 connected to the switch button 23. If the projection 26 of the switch button 23 is moved further towards the stop 27, the angle lever 31 is rotated clockwise, viewed in the plane of the drawing, about its bend point 32, causing the arm part 35 to be moved in the direction away from the body 8 and the action of the end 36 on the stop 37 of the body 8 to be released. Under the influence of the force exerted by the tensioned leaf spring 6, the body 8 is moved in the direction of the fixed contact 16, causing the contacts 14, 16 to be moved with force against each other and the automatic switch to be switched on, as shown in Fig. 1a.
  • the moment of switching on i.e. the moment at which the contacts 14, 16 are moved against each other
  • the leaf spring 6 can be subjected to high bending stress, a required, high switching-on speed of the contacts of the automatic switch can be achieved, in the switched-on position the force with which the contacts are pressed against each other also being high.
  • a two-phase switch with a zero and a phase contact it is possible, for example, to provide only the body with the phase contact with an angle lever acting thereon, so that the zero contact is switched on earlier than the phase contact, and thereby currentless.
  • the switch according to the invention it is thus possible to have either one or more pairs of contacts switched on unequally or one or more pairs of contacts switched on with a definite speed.
  • the automatic switch can then be switched off in two ways, i.e. the contacts of the pairs of contacts 12, 13 are separated from each other. If the projection 26 of the switch button 23 is moved by hand in the direction of the stop 56, such force is exerted by the locking element 22 on the leg 4 of the wire bracket 2 that, partly under the influence of the force of the leaf spring 6, the bracket and the leaf spring assume the deflected position shown in Fig. 2, and the contacts 14, 16 are separated from each other. Any discharge arc occurring between the contacts is guided between the contacts via the guides 19, 20 connected thereto, to the explosion chamber 18 and extinguished there in an effective manner.
  • the contacts can also be opened with the aid of the armatures of the electromagnets 45, 46 acting on the unlocking element, or with other suitable means. If the current through these magnets is sufficiently high, the armatures 47, 48 belonging to them are moved in the direction of the arm parts 43, 44 of the unlocking element, causing the unlocking element to be tilted about its support points, as shown in Fig. 4. Since the arm part 42 of the unlocking element acts on the stop 49 of the locking element 22, it is moved in the direction away from the fixed contact 16, thereby releasing the action on the leg 4 of the wire bracket 2. Under the influence of the force exerted by the spring action, the leaf spring 6 and the bracket 2 again assume their deflected position, as shown by the arrow 58, so that the contacts 14, 16 move into the position separated from each other, as shown in Fig. 5.
  • the automatic switch can be switched on again, for example manually by the switch button 23 to the position shown in Fig. 2, causing the locking element 22 with its U-shaped notch 24 to engage with the leg 4 of the wire bracket.
  • spring means acting on the switch button 23 as discussed above, these spring means would ensure in the situation shown in Fig. 5 that, after the release of the locking of the locking element 22, the automatic switch goes by itself into the position shown in Fig. 2. From this position the automatic switch can be switched on again in the manner discussed above.
  • Fig. 6 shows schematically in cross section another embodiment of a switch according to the invention, with a leaf spring system comprising a supporting frame 60, a leaf spring 61 and the arm 62.
  • the leaf spring 61 is fastened at one end to the supporting frame 60 and can be integral therewith as shown, or can be connected by means of a further element so that it hinges freely, as shown, for example, in Fig. 6a of the above-mentioned European patent application 0,322,988, filed simultaneously by applicant.
  • the free end of the leaf spring 61 is hingedly connected to one end of the arm 62, at the other end of which a body 63 (contact block) is hingedly connected.
  • the body 63 bears a movable contact 64 and via a glider 66 is slidably mounted in the frame aperture of the supporting frame 60 and is electrically connected to a terminal 65.
  • the fixed contact 67 working together with the movable contact 64 is fixed in the frame aperture on the frame side situated opposite the fixed end of the leaf spring 61 and is electrically connected to the terminal 68.
  • the supporting frame 60 has to be rigidly supported by the housing of the switch or by a separate chassis inside the housing (not shown).
  • Said leaf spring assembly with supporting frame constitutes for virtually the most part a so-called closed force system, which means that the tension exerted by the leaf spring is largely absorbed by the combination of the spring, the body and the supporting frame. This means that much lower strength requirements are needed for the housing or the chassis in which such a leaf spring system is mounted.
  • the leaf spring 61 which is in the deflected position relative to the plane of the supporting frame 60, and the arm 62 are moved in the direction of the supporting frame 60, the body 63 will be moved in the direction of the fixed contact 67 until the two contacts 64, 67 come into contact with each other. If the leaf spring 61 is now forced further towards the supporting frame 60, said leaf spring 61 will be tensioned further and will thereby exert a contact force on the closed contacts.
  • the locking of this position is obtained through the flat part 71 of the switch button 69 resting against the stop 72 formed in the housing and the unlocking element 70 in this position exerting a anti-clockwise couple on the switch button 69.
  • the locking can be released again by manually moving the switch button 69 clockwise, viewed in the plane of the drawing, as a result of which the arm 62 is moved via the locking element 70 acting thereon to its deflected position relative to the supporting frame 60.
  • the movement of the locking element 70 is fixed via a guide 73 acting in concert therewith.
  • spring means acting on the switch button 69 for taking it against a stop are produced in a manner corresponding to that of the preceding embodiment.
  • the arm 62 can be designed as a wire bracket.

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  • Keying Circuit Devices (AREA)
  • Switches With Compound Operations (AREA)
  • Push-Button Switches (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
  • Contacts (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Tumbler Switches (AREA)
  • Mechanisms For Operating Contacts (AREA)
EP88203033A 1987-12-31 1988-12-28 Switch, in particular for use as automatic switch Expired - Lifetime EP0322986B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88203033T ATE88835T1 (de) 1987-12-31 1988-12-28 Schalter, insbesondere zur verwendung als automatischer schalter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8703172 1987-12-31
NL8703172A NL8703172A (nl) 1987-12-31 1987-12-31 Schakelaar, in het bijzonder voor gebruik als schakelautomaat.

Publications (2)

Publication Number Publication Date
EP0322986A1 EP0322986A1 (en) 1989-07-05
EP0322986B1 true EP0322986B1 (en) 1993-04-28

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ID=19851176

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88203033A Expired - Lifetime EP0322986B1 (en) 1987-12-31 1988-12-28 Switch, in particular for use as automatic switch

Country Status (8)

Country Link
EP (1) EP0322986B1 (no)
AT (1) ATE88835T1 (no)
DE (1) DE3880653T2 (no)
DK (1) DK171090B1 (no)
ES (1) ES2040836T3 (no)
FI (1) FI91199C (no)
NL (1) NL8703172A (no)
NO (1) NO174177C (no)

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Publication number Priority date Publication date Assignee Title
FR2675305B1 (fr) * 1991-04-12 1994-05-06 Hager Electro Sa Mecanisme de serrure a declenchement pour appareils de commutation et appareils de commutation incorporant cette serrure.
NL9102154A (nl) * 1991-12-20 1993-07-16 Holec Syst & Componenten Elektrische schakelaar, in het bijzonder een last- of vermogensschakelaar.
US9589755B1 (en) * 2016-04-27 2017-03-07 Sensata Technologies, Inc. Circuit breaker having a framed finger area

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Publication number Priority date Publication date Assignee Title
US3016435A (en) * 1959-03-18 1962-01-09 Heinemann Electric Co Circuit breaker and latch structure
DE1148302B (de) * 1961-02-24 1963-05-09 Licentia Gmbh Kniehebelschalter, z. B. fuer UEberstromschutz von Haushaltsgeraeten od. dgl.
US3384846A (en) * 1966-11-23 1968-05-21 Gen Electric Current limiting circuit breaker mechanism
FR2057181A5 (no) * 1969-08-04 1971-05-21 Merlin Gerin
EP0127784B1 (de) * 1983-05-06 1986-07-30 Lindner GmbH Fabrik elektrischer Lampen und Apparate Überstromschutzschalter

Also Published As

Publication number Publication date
NO885823L (no) 1989-07-03
EP0322986A1 (en) 1989-07-05
ES2040836T3 (es) 1993-11-01
FI91199B (fi) 1994-02-15
FI885996A (fi) 1989-07-01
DK732488A (da) 1989-07-01
NO174177B (no) 1993-12-13
NO174177C (no) 1994-03-23
DE3880653D1 (de) 1993-06-03
NL8703172A (nl) 1989-07-17
DK171090B1 (da) 1996-05-28
FI91199C (fi) 1994-05-25
ATE88835T1 (de) 1993-05-15
NO885823D0 (no) 1988-12-30
DK732488D0 (da) 1988-12-30
DE3880653T2 (de) 1993-11-11

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