EP0743664A2 - Appareil de commutation électrique - Google Patents

Appareil de commutation électrique Download PDF

Info

Publication number
EP0743664A2
EP0743664A2 EP96107564A EP96107564A EP0743664A2 EP 0743664 A2 EP0743664 A2 EP 0743664A2 EP 96107564 A EP96107564 A EP 96107564A EP 96107564 A EP96107564 A EP 96107564A EP 0743664 A2 EP0743664 A2 EP 0743664A2
Authority
EP
European Patent Office
Prior art keywords
pendulum
spring
slide
switching device
switching
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP96107564A
Other languages
German (de)
English (en)
Other versions
EP0743664A3 (fr
EP0743664B1 (fr
Inventor
Michael Knorr
Heinz Briske
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.)
ABB Patent GmbH
Original Assignee
ABB Patent GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ABB Patent GmbH filed Critical ABB Patent GmbH
Publication of EP0743664A2 publication Critical patent/EP0743664A2/fr
Publication of EP0743664A3 publication Critical patent/EP0743664A3/fr
Application granted granted Critical
Publication of EP0743664B1 publication Critical patent/EP0743664B1/fr
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
    • H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
    • H01H21/02—Details
    • H01H21/18—Movable parts; Contacts mounted thereon
    • H01H21/22—Operating parts, e.g. handle
    • H01H21/24—Operating parts, e.g. handle biased to return to normal position upon removal of operating force
    • H01H21/245—Operating parts, e.g. handle biased to return to normal position upon removal of operating force the contact returning to its original state upon the next application of operating force
    • 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
    • H01H23/24—Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button with two operating positions
    • H01H23/26—Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button with two operating positions one of which positions is unstable

Definitions

  • the invention relates to an electrical switching device, in particular push button switch, with an actuating element, e.g. Switch rocker, which returns to its initial position after actuation, with a slider acted upon by it with at least one pendulum articulated thereon and with a switching element which cooperates with the slider and with the pendulum and serves to actuate at least one contact arrangement.
  • an actuating element e.g. Switch rocker
  • Electrical switching devices are known whose actuating elements, for example rockers, always return to their starting position after a switching operation.
  • the switching components acted upon by the actuating element in the relevant switching device retain the respective switching position unchanged until the next actuation.
  • the advantage of such an embodiment of an electrical switching device is that the overall aesthetic impression of the switching device is not impaired by different inclinations of the actuating element, because this always assumes the same position in the rest position.
  • an electrical switching device with a switching mechanism which has an actuating element designed as a rocker, a slide part and a pivotably mounted rocker switch for loading a contact arrangement arranged in a housing base.
  • the actuating element in this case acts on the slide part with a nose, which on a is formed on the slide part formed slope, whereby a force deflection is achieved and the slide part is displaced against the force of a return spring transversely to the direction of actuation of the rocker.
  • a swivel part is rotatably mounted, the two bearing pins of which each have a flattened area, against which spring bars resembling leaf springs bear and apply the swivel part to a central position. Furthermore, the swivel part is provided with two pressure pieces arranged symmetrically to one another, which cooperate with the rocker switch, in that it is acted upon by a contact surface formed on each corner of the swivel part facing away from the swivel axis.
  • a similar switching device in which the movement of the actuating element of a slide with a beveled pressure surface and at least one pendulum arranged thereon also carries out a transverse movement and thereby also acts on a pivoting switching element, is known on the market as a pushbutton.
  • the at least one pivotable pendulum arranged on the slide is designed in the form of an isosceles triangle, whose pivot axis, designed as a plug-in axis, intersects the axis of symmetry of the pendulum near the corner point and is guided in lateral bearing points in the slide.
  • the switching element which is also pivotably mounted.
  • the switching element takes an oblique position relative to the pendulum, so that depending on the respective switching position, the pendulum hits the slide when actuated with one of the two other corner points, experiences a certain deflection and the Brings slider into its other position.
  • a compression spring supported on the slide ensures that the pendulum always takes a central position between the two deflection positions at rest.
  • a disadvantage of this design has been shown to be a certain susceptibility to contamination, for example due to dust, and the resulting stiffness of this switching system.
  • the penetration of dust can never be completely ruled out, which settles at the bearing points and can sometimes lead to incorrect actuation due to insufficient pivoting of the pendulum due to excessive bearing friction.
  • the assembly of the known switching device is time-consuming and part-related in terms of storage and adjustment of the pendulum.
  • the spring is designed as a leaf spring which acts on the pendulum in a non-positive and positive manner by the spring, according to a preferred embodiment of the invention, engaging in a recess provided for this purpose in the pendulum at its end remote from its pivot point and thus practically free of play, ensuring that the pendulum after each actuation-dependent deflection it assumes its intended rest position, which is a middle position between two opposing deflections.
  • the spring is integrally connected to the slide.
  • the spring and the slide are made of plastic in order to simplify production.
  • a further advantageous embodiment of the invention is characterized in that in the rest position the longitudinal axis of the spring is aligned with the central axis of the pendulum which is also in the rest position. This ensures that the swivel paths of the pendulum are always the same in both swivel directions, since the pendulum is urged into its central position by the return spring.
  • connection of the spring to the slide is web-like and has a connection cross section which is dimensioned such that, using the elasticity of the material used, the restoring force required to reset the pendulum when the pendulum is deflected and thus the spring results.
  • the desired or required restoring force of the spring between strong and weak restoring can be determined in a simple manner, namely by means of a defined cross-sectional configuration of the connection cross section of the spring to the slide.
  • each switching device each of which is equipped with a pendulum, which pendulums are acted upon by return springs which are assigned to the respective slide and are assigned to them.
  • Fig. 1 is a partial longitudinal section through a switching device 10 according to the invention with a base upper part 12, in which a switching element 14 is pivotally mounted and cooperates with a slide 16, which is operatively connected to an actuating element 18 via a nose 19 molded thereon with a on the slide 16 molded switch bevel 17 is operatively connected.
  • a triangular pivot part which can be pivoted about a pivot axis 21 and which transmits the movement of the slide 16 to the switching element 14.
  • the pendulum 20 cooperates with a spring 22 arranged on the slide 16 in the opposite direction, that is to say on the opposite end of the pendulum 20 which executes a pivoting path, which, according to the invention, presses the pendulum 20 positively into its rest position by the return spring 22 in the form of a leaf spring a recess 23 is formed on said end face of the pendulum, so that the pendulum 20 assumes the rest position provided as the central position between two deflections after the switching device 10 has been actuated.
  • the cross-sectional configuration of the return spring 22 according to the invention can be adjusted to the desired return characteristic, the spring 22 preferably being connected in one piece to the slide 16.
  • the switching operation by the pendulum 20 or by the switching element takes place in a known manner in that the switching element 24 in turn actuates a contact arrangement 24 which has a fixed contact piece 25 and a movable contact piece 26 which is pivotally supported on a contact carrier 28 and of which in Fig 1 closed position can be pivoted into the open position shown in FIG.
  • the switching element 14 the known pivot bearing of which is not shown here and which acts on the movable contact piece 26 with a spring sleeve against the contact carrier 28, has at its end facing away from the contact arrangement 24 an opening 15 which is arranged transversely to its longitudinal axis and penetrates the switching element , which is penetrated by the slide 16, which in turn acts on a return spring 30, which assumes the rest position shown in Fig. 1.
  • the pendulum 20 which is similar to an isosceles triangle, is pivotably connected to the slide 16 according to the embodiment of the invention shown in FIGS. 1 and 2 via the pivot axis 21 already mentioned, which is designed as a push-through axis, the pivot path of the pendulum 20 on the one hand and that during its deflection resulting restoring force on the other hand are determined exclusively by the design of the spring 22, which has also already been described.
  • FIG 3 shows a partial top view of the switching device 10 with the actuating element 18 removed, only one half of the device 10, which is constructed symmetrically per se, being shown.
  • the horizontally oriented pendulum 20 engages with its upper symmetry half 32 in engagement with a switching web 34 formed on the switching element 14, which forms the upper limit of the recess 15, and thus transmits the displacement of the slide 16 to the switching element 14, the then pivots counterclockwise about its axis of rotation intersecting with the central axis of the slide 16.
  • the switching element 14 After reaching the end position of the slide 16 shown in FIG. 2, the switching element 14 assumes the switching position according to FIG. 2, in which the contact arrangement 24 is opened due to the action that is thereby taken.
  • the slider 16 When the actuating element 18 is actuated again, the slider is in turn moved to the left by the lug 19 acting on the bevel 17 of the slider 16.
  • the lower half of the symmetry 33 of the pendulum 20 first comes into engagement with the lower limit of the recess 15 in the switching element 14, which is located below its axis of rotation, and moves the switching element 14 on its further displacement into the other switching position, with the return spring 30 simultaneously is excited.
  • the slider 16 is reset in the same way as described for FIG. 2, and the actuating element 18 is also reset, with the switching element 14 maintaining its switching position.
  • the main advantage of the present invention results from the fact that, on the one hand, the manufacture of the switching device according to the invention is considerably simplified, since fewer parts have to be assembled, and, on the other hand, what is even more significant, interferences due to excessive friction due to contamination by dust, the pivoting mobility of the pendulum 20 do not affect because the pendulum 20 is acted upon by the spring 22.

Landscapes

  • Push-Button Switches (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Lock And Its Accessories (AREA)
  • Valve Device For Special Equipments (AREA)
  • Control Of Electric Motors In General (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
EP96107564A 1995-05-17 1996-05-13 Appareil de commutation électrique Expired - Lifetime EP0743664B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19518094 1995-05-17
DE19518094A DE19518094A1 (de) 1995-05-17 1995-05-17 Elektrisches Schaltgerät

Publications (3)

Publication Number Publication Date
EP0743664A2 true EP0743664A2 (fr) 1996-11-20
EP0743664A3 EP0743664A3 (fr) 1998-05-06
EP0743664B1 EP0743664B1 (fr) 2001-02-28

Family

ID=7762146

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96107564A Expired - Lifetime EP0743664B1 (fr) 1995-05-17 1996-05-13 Appareil de commutation électrique

Country Status (3)

Country Link
EP (1) EP0743664B1 (fr)
AT (1) ATE199466T1 (fr)
DE (2) DE19518094A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2348319A (en) * 1999-03-23 2000-09-27 Mic Enterprise Co Limited Microswitch
ITTO20080675A1 (it) * 2008-09-16 2010-03-17 Bitron Spa Interruttore multicontatto per basse potenze a scatto veloce.
EP2398029A1 (fr) * 2010-06-18 2011-12-21 AB Plast S.r.l. Interrupteur à commande monostable et à contact bistable
EP2498269A1 (fr) 2011-03-08 2012-09-12 Bitron S.p.A. Commutateur mécanique multi-contacts à enclenchement rapide
CN103165332A (zh) * 2013-02-28 2013-06-19 昌辉汽车电器（黄山）股份公司 一种汽车用防误操作的翘板开关
CN109595253A (zh) * 2019-01-15 2019-04-09 北京史河科技有限公司 转轴复位装置和调节装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2906928B1 (fr) * 2006-10-05 2009-11-27 Legrand France Commutateur electrique securise

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3912798A1 (de) * 1989-04-19 1990-10-25 Jung Gmbh Albrecht Schaltmechanik fuer einen tastschalter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3912798A1 (de) * 1989-04-19 1990-10-25 Jung Gmbh Albrecht Schaltmechanik fuer einen tastschalter

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2348319A (en) * 1999-03-23 2000-09-27 Mic Enterprise Co Limited Microswitch
GB2348319B (en) * 1999-03-23 2003-06-11 Mic Entpr Co Ltd Microswitch
ITTO20080675A1 (it) * 2008-09-16 2010-03-17 Bitron Spa Interruttore multicontatto per basse potenze a scatto veloce.
EP2164085A1 (fr) * 2008-09-16 2010-03-17 BITRON S.p.A. Commutateur de contact multiple à action brusque pour des courants failbles
EP2398029A1 (fr) * 2010-06-18 2011-12-21 AB Plast S.r.l. Interrupteur à commande monostable et à contact bistable
EP2498269A1 (fr) 2011-03-08 2012-09-12 Bitron S.p.A. Commutateur mécanique multi-contacts à enclenchement rapide
CN103165332A (zh) * 2013-02-28 2013-06-19 昌辉汽车电器（黄山）股份公司 一种汽车用防误操作的翘板开关
CN103165332B (zh) * 2013-02-28 2016-03-02 昌辉汽车电器（黄山）股份公司 一种汽车用防误操作的翘板开关
CN109595253A (zh) * 2019-01-15 2019-04-09 北京史河科技有限公司 转轴复位装置和调节装置

Also Published As

Publication number Publication date
EP0743664A3 (fr) 1998-05-06
EP0743664B1 (fr) 2001-02-28
DE19518094A1 (de) 1996-11-21
ATE199466T1 (de) 2001-03-15
DE59606479D1 (de) 2001-04-05

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