EP0831509A2 - Système d'entraínement pour commutateurs, en particulier pour relais - Google Patents

Système d'entraínement pour commutateurs, en particulier pour relais Download PDF

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Publication number
EP0831509A2
EP0831509A2 EP97114884A EP97114884A EP0831509A2 EP 0831509 A2 EP0831509 A2 EP 0831509A2 EP 97114884 A EP97114884 A EP 97114884A EP 97114884 A EP97114884 A EP 97114884A EP 0831509 A2 EP0831509 A2 EP 0831509A2
Authority
EP
European Patent Office
Prior art keywords
contact
drive system
slide
contact springs
springs
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.)
Withdrawn
Application number
EP97114884A
Other languages
German (de)
English (en)
Other versions
EP0831509A3 (fr
Inventor
Jochen Feiler
Daniel Josef Dr.-Ing Jendritza
Hartmut Prof.Dr.-Ing.Habil Janocha
Horst Binnig
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.)
Hengstler GmbH
Original Assignee
Kaco Elektrotechnik 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 Kaco Elektrotechnik GmbH filed Critical Kaco Elektrotechnik GmbH
Publication of EP0831509A2 publication Critical patent/EP0831509A2/fr
Publication of EP0831509A3 publication Critical patent/EP0831509A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/64—Driving arrangements between movable part of magnetic circuit and contact
    • H01H50/641—Driving arrangements between movable part of magnetic circuit and contact intermediate part performing a rectilinear movement
    • H01H50/642—Driving arrangements between movable part of magnetic circuit and contact intermediate part performing a rectilinear movement intermediate part being generally a slide plate, e.g. a card
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/001—Means for preventing or breaking contact-welding
    • 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
    • H01H3/0253—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch two co-operating contacts actuated independently
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/56—Contact spring sets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/56—Contact spring sets
    • H01H50/58—Driving arrangements structurally associated therewith; Mounting of driving arrangements on armature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H55/00—Magnetostrictive relays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H57/00—Electrostrictive relays; Piezoelectric relays

Definitions

  • the invention relates to a drive system for switches, especially for relays, according to the preamble of the claim 1.
  • the contact springs are by a slide connected to each other by an anchor for closing the closer or opening of the opener is postponed becomes.
  • the Contact spring of the make contact and the break contact in one Direction so moved until the corresponding contact opens or is closed.
  • the sliding paths for closing and opening the contacts are relatively large, especially since the second contact via a corresponding one Must be taken to the necessary way To generate pressure between the contact points. With The contact points burn gradually as the operating time increases from, so that the adjustment paths to reach the same contact forces would have to become increasingly larger.
  • the invention has for its object the generic Design the drive system so that only short adjustment paths required to close or open the contact are.
  • the two Contact springs moved in opposite directions at the same time. This means that the adjustment paths for closing or Opening the contact very little. Even if with increasing Gradually burn off the contact points, remains guaranteed due to the opposite movement, that the contact springs in the closed position lie together with sufficient pressure. As a result the training according to the invention, it is also not necessary that when the two contact springs make contact the other contact still has a corresponding one Must be taken away. This so-called walk falls away as a result of the training according to the invention.
  • the Contact power is caused by the opposite movement and a spring deflection over the point of contact built out. Because of this opposite movement the contact springs become a very short displacement and thus very short actuation or switching times are achieved.
  • Fig. 1 shows a switch 1 in the illustrated embodiment is designed as a relay.
  • the desk 1 can also be a quick switch, for example Undervoltage release, a residual current circuit breaker and the like.
  • switch 1 described in the form of a relay.
  • the switch 1 has two contact springs as switching elements 2, 3, in a known manner in a switch housing 4th are stored.
  • the protruding from the switch housing 4 Ends of the contact springs 2, 3 form connections, via which the current passes on in a known manner becomes.
  • the two contact springs 2, 3 each enter Contact piece 5, 6. It is also possible that the contact springs 2, 3 interact directly with each other.
  • the two contact springs 2, 3 are by a slide 7 connected at a fixed distance. He is through one Energy converter 8 postponed.
  • the energy converter 8 can be replaced by a ferroelectric piezoceramic, a foil, e.g.
  • the energy converter 8 is mounted in the switch housing 4 and to control electronics 9 and to evaluation electronics 10 connected.
  • the evaluation electronics 10 detects the electrical terminal behavior of the energy converter 8 and sends a corresponding signal to a (not shown) Monitoring unit. If the contact points are 5, 6 not welded together, this monitoring unit receives a corresponding signal. Then she gives in turn a corresponding signal to the control electronics 9, which can control switch 1 again. However, if the contact pieces 5, 6 are welded together, this is recognized by the evaluation electronics 10, a corresponding blocking signal to the monitoring unit delivers. It gives a corresponding signal to the control electronics 9 so that the switch 1 no longer controls.
  • the energy converter 8 in the illustrated embodiment is formed by a piezo element, excited becomes, its impedance changes and with it also the voltage or the current.
  • the excited energy converter 8 is elastically deformed and moves the slide 7, whereby the contact springs 2, 3 are elastically bent and their contact pieces 5, 6 come into contact with each other.
  • switch 1 is operating correctly, sweep the contact springs 2, 3 when the energy converter 8 is not is more excited, in their starting position shown in Fig. 1 back, in which the two contact pieces 5, 6 are at a distance from each other. Should the contact pieces 5, 6, however, get stuck to one another as a result of welding, the energy converter 8 also remains deflected since he via the slider 7 with the contact springs 2, 3rd connected is.
  • the slide 7 sits firmly on the contact spring 2 and is approximately T-shaped in cross section. At the footbridge of the Slider 7 are on one side of his foot Bending converter 8 and on the other hand the other Contact spring 3 attached. Near her top, adjacent the contact spring becomes the web of the slide 7 3 between two abutments fixed to the housing 11 supported. The lower ends of the contact springs 2, 3 and of the energy converter 8 are in a contact block 12 of the Switch 1 clamped.
  • the energy converter 8 If the energy converter 8 is excited, it is shown in the Embodiment bent elastically to the right. As a result, the slide 7 is shown in the illustration Fig. 2 shifted to the right by the energy converter 8. Because the slider 7 on the upper end of the contact spring 2 sits, which in turn with its lower end is clamped in the contact block 12, the contact spring 2 elastic bent to the right. The contact spring 3 is because it is also directly connected to the slider 7 is bent elastically. As a result of the two abutments 11 however, the contact spring 3 is opposite to the contact spring 2 elastically deformed. The contact pieces come here 5, 6 of the two contact springs 2, 3 with each other in Contact. If switch 1 drops out, the energy converter becomes 8 moved back to its starting position according to FIG. 1. About the slide 7, the two contact springs 2, 3 bent back to their starting position, in which, for example, parallel to each other and to the energy converter 8 lie.
  • an energy converter 8 used to the example to operate switch 1 designed as a relay.
  • the energy converter 8 can in turn by a ferroelectric Piezoceramic, a film that, for example made of lead zirconate titanate or polyvinylidene fluoride exists, or through magnetostrictive rare earth metals be formed, such as Terefenol-D.
  • a ferroelectric Piezoceramic a film that, for example made of lead zirconate titanate or polyvinylidene fluoride exists, or through magnetostrictive rare earth metals be formed, such as Terefenol-D.
  • the schematic representation according to FIG. 3 and 4 is that due to the deflection of the energy converter 8 generated force F and the corresponding adjustment path s represented symbolically by an arrow.
  • the slider 7 has an L-shape in cross section. Its longer Leg 13 is with the contact spring 2 and its shorter Leg 14 mechanically connected directly to the contact spring 3.
  • the two contact springs 2, 3 are in the contact block 12 of the switch housing 4 in a known manner clamped.
  • the contact spring 2 is in the 3 and 4 upper end at the free end of the leg 13th the slider 7 attached.
  • the top end of the contact spring 3 is near the free end of the shorter leg 14 the slider 7 attached.
  • the Contact spring 3 with its upper end between the two Abutments 11, which are provided on the switch housing 4 are.
  • the contact spring 3 does not have to be rigid with the slide 7 get connected. For example, it is sufficient that the upper end of the contact spring 3 on the front side of the Leg 14 of the slider 7 abuts. Will the slider 7 shifted to the right in the manner described, the contact spring 3 is also opposed in this case to the contact spring 2 bent elastically.
  • Such Training can also in the embodiment according to the 1 and 2 may be provided.
  • the contact spring 3 clamped between two abutments 11. It it is sufficient that only the right abutment in the drawings 11 is provided to move the slide 7 to the right the contact spring 3 in the described Way to deflect.
  • the two contact springs 2, 3 are each U-shaped.
  • the contact spring 2 (Fig. 5 and 6) has the two to each other parallel legs 15, 16, of which the leg 16 is longer than the leg 15.
  • the two legs 15, 16 are through a web perpendicular to them 17 connected to each other.
  • the leg 16 is with his lower end, for example in the contact block 12 (FIG. 1 to 4) of the switch housing 4 clamped during the shorter leg 15, the near its free end Contact piece 5 carries, is free.
  • From web 17 is in Height of the leg 15 from an approach 18 on which the Slider 7 is attached. If the switch is not actuated, are the two legs 15, 16 and the web 17th the contact spring 2 in a common plane (Fig. 6).
  • the two legs 15, 16 are advantageously the same wide, while the web 17 can be made narrower can.
  • the contact spring 2 is advantageous by a Stamped part formed that is simply from a spring band can punch.
  • the contact spring 3 also has mutually parallel Legs 19, 20, which are interconnected by a web 21 are connected.
  • the leg 20 is longer than that Leg 19 and with its free end, for example in Contact block 12 of the switch housing 4 (Fig. 1 to 4) clamped.
  • the legs 19, 20 preferably have same width, while the web 21, which is perpendicular to the thighs is smaller than the width.
  • the contact spring 3 is also advantageous from one Spring band punched.
  • leg 19 bears against the abutment 11, which in Area between the contact piece 6 and the web 21 is provided is. In the illustrated embodiment lies the abutment on the opposite of the contact piece 6 Side of the leg 19 is provided closer at web 21 than at contact piece 6.
  • the slider 7 is plate-shaped and over the approaches 18 and 22 mechanically firmly with the contact springs 2 and 3 connected. In the starting position they are two contact springs 2, 3 in mutually parallel planes facing each other at a distance. If the switch 1 is actuated, the slide 7 is in the direction of arrow 23 7, 10 and 11 shifted. Because the two contact springs 2, 3 are connected to the slide 7 they are each elastically deformed. Since the leg 16 of the Contact spring 2 is clamped, the web 17 is transverse to its plane bent elastically (Fig. 7) so that the two Legs 15, 16 of the contact spring 2 now in each other parallel planes.
  • the leg 20 of the contact spring 3 is also clamped, so that when moving the slide 7 of the web 21 is elastically bent transversely to its plane (Fig. 10). Since the other, free leg 19 on the abutment 11 supports, he is here in the opposite direction to the leg 15 the opposite contact spring 2 elastically deformed. As a result, the two contact pieces 5, 6 come Contact springs 2, 3 under the required contact pressure for mutual investment (Fig. 11).
  • the two contact springs 2, 3 designed as a relay Switch 1 are thus to close or Opening the contact moves in opposite directions to each other. Thereby the travel ranges are very short, so that the corresponding ones Closing or opening times of the counter are extremely low. In particular, all described embodiments the so-called walk-along omitted.
  • the opposite Movement of the contact pieces 5, 6 is such an additional one Adjustment path (travel) is no longer necessary. Even if the contact pieces 5, 6 wear out over time, is ensured due to the opposite movement, that the contact pressure is sufficiently high.
  • the housing-fixed abutment 11 is so long that the leaf-shaped Leg 19 of the contact spring 3 over its entire width abuts abutment 11.
  • the abutment is preferably 11 longer than the width of the leg 19, so that Safe support at the abutment even with installation tolerances is guaranteed. It advantageously has a circular shape Cross section to the elastic deformation of the To ensure leg 19 in a simple manner.
  • the contact springs 2, 3 in the starting position, in which the two contact pieces 5, 6 distance from each other have not biased.
  • the contact springs 2, 3 can, however, in the rest position in which the contact pieces 5, 6 have a distance from each other, elastically bent be. If the slide 7 from the starting position in the described way is moved by the elastic Preload the corresponding contact spring 2, 3 achieved that this under the preload in the corresponding misplaced position. To adjust the Contact springs 2, 3 must have the slide 7 for this reason apply only relatively small forces.
  • the slider 7 can be converted by energy or bending transducers 8 be moved.
  • the training and functioning described can also be used with switches, in which the slide 7 in a conventional manner, for example by means of an anchor. There due to the opposite movement of the contact pieces 5, 6 only a very short adjustment path for closing and opening is necessary, can be excellent for driving the slide 7 the described energy or bending transducer 8 be used.
  • the elastic Deforming the contact spring 3 required force change or adjust.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Slide Switches (AREA)
  • Push-Button Switches (AREA)
EP97114884A 1996-09-21 1997-08-28 Système d'entraínement pour commutateurs, en particulier pour relais Withdrawn EP0831509A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19638716 1996-09-21
DE19638716A DE19638716A1 (de) 1996-09-21 1996-09-21 Antriebssystem für Schalter, insbesondere für Relais

Publications (2)

Publication Number Publication Date
EP0831509A2 true EP0831509A2 (fr) 1998-03-25
EP0831509A3 EP0831509A3 (fr) 1998-12-09

Family

ID=7806432

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97114884A Withdrawn EP0831509A3 (fr) 1996-09-21 1997-08-28 Système d'entraínement pour commutateurs, en particulier pour relais

Country Status (5)

Country Link
US (1) US6046418A (fr)
EP (1) EP0831509A3 (fr)
JP (1) JPH10149755A (fr)
KR (1) KR19980024787A (fr)
DE (1) DE19638716A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2776160A1 (fr) * 1998-03-10 1999-09-17 Philips Consumer Communication Dispositif de commutation d'antenne entre des etages d'emission et de reception
GB9811277D0 (en) * 1998-05-26 1998-07-22 Pbt Limited Piezo ceramic operated mechanism
DE102004026963B4 (de) * 2004-06-02 2007-04-12 Festo Ag & Co Ventilanordnung zur Fluidsteuerung
US9536691B1 (en) 2014-07-10 2017-01-03 Google Inc. Axial relay
CN112992610B (zh) * 2021-02-08 2022-07-29 四川宏发电声有限公司 一种卧式继电器的推动卡装配结构

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190904270A (en) * 1909-02-22 1909-10-21 Merrit Scott Conner An Improved Electric Signalling and Ringing Key.
US2118528A (en) * 1937-09-11 1938-05-24 Bendix Home Appliances Inc Switch
US3688135A (en) * 1970-10-09 1972-08-29 Clare & Co C P Piezoelectrically actuated lever switch
JPS5024029B1 (fr) * 1970-11-25 1975-08-12
SE370591B (fr) * 1973-04-12 1974-10-21 Ericsson Telefon Ab L M
US3902032A (en) * 1974-06-07 1975-08-26 Illinois Tool Works Electrical switch with improved contact structure
DE2726730A1 (de) * 1977-06-14 1979-01-04 Wolfgang Gruner Relais, kontaktfeder hierfuer und verfahren zur herstellung einer kontaktfeder
JPH033940Y2 (fr) * 1985-02-28 1991-01-31

Also Published As

Publication number Publication date
JPH10149755A (ja) 1998-06-02
DE19638716A1 (de) 1998-03-26
US6046418A (en) 2000-04-04
EP0831509A3 (fr) 1998-12-09
KR19980024787A (ko) 1998-07-06

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