EP0138257A1 - Interrupteur électrique - Google Patents

Interrupteur électrique Download PDF

Info

Publication number
EP0138257A1
EP0138257A1 EP84201353A EP84201353A EP0138257A1 EP 0138257 A1 EP0138257 A1 EP 0138257A1 EP 84201353 A EP84201353 A EP 84201353A EP 84201353 A EP84201353 A EP 84201353A EP 0138257 A1 EP0138257 A1 EP 0138257A1
Authority
EP
European Patent Office
Prior art keywords
contact
switch
mass
movable
energy
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
EP84201353A
Other languages
German (de)
English (en)
Other versions
EP0138257B1 (fr
Inventor
Willem Coppoolse
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.)
Holec Holland NV
Original Assignee
Hazemeijer BV
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 Hazemeijer BV, Holec Systemen en Componenten BV filed Critical Hazemeijer BV
Priority to AT84201353T priority Critical patent/ATE32150T1/de
Publication of EP0138257A1 publication Critical patent/EP0138257A1/fr
Application granted granted Critical
Publication of EP0138257B1 publication Critical patent/EP0138257B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position

Definitions

  • the invention relates to an electric switch, provided with at least two cooperating contacts, of which at least one can be moved to and from the other contact for switching on and off the switch respectively, drive means for the movable contact, in order to move it when the switch is open, from a given position at a distance from the other contact to this other contact for switching on the switch.
  • the measures according to the invention are characterized by at least one movable mass, which, in the given position of the movable contact in an open switch, is resting against the other contact on another side of this other contact than the side by which, when switching on the switch, the movable contact is stopped, one and another such that the impact energy herewith generated is transmitted by the other contact to the mass, where the impact energy is converted again into movement energy of this mass.
  • the solution according to the invention is based on the thought not to destroy the kinetic or movement energy of the movable contact, when it strikes, but if possible to convert it into pressure waves, which propagate through the other contact to the other side thereof,where these pressure waves are converted again into kinetic or movement energy of the mass.
  • the invention relates to an electric switch, which is also provided with at least two cooperating contacts, of which at least one can be moved to and from the other contact in order to switch on and off the switch respectively, drive means being present for the movable contact in order to move it, when the switch is closed, from the position in which it is resting against the other contact, away from the other contact.
  • the switch off velocity in the usual switches is limited to a maximum of 1 m per second.
  • the velocity of the movable contact, when switching off, can be increased considerably nowadays, by applying further measures according to the invention, which are characterized by at least one movable mass, which, in said position of the movable contact, when the switch is closed, is kept at a distance from the other contact at another side of this other contact than the side against which the movable contact is resting., means for driving the movable mass to the other contact, one and another such that the impact energy, when the movable mass strikes against the other contact, is transmitted by this other contact to the movable contact, where the impact energy is converted into movement energy of the movable contact.
  • the means for driving the movable contact to the other contact consist of resilient means, while means for maintaining the movable mass are present, which maintain this mass in a position, in which movement energy has been buffered into the resilient means.
  • This movement energy can be buffered into the means for maintaining the mass upon movement of the mass as a consequence of the impact energy, which, at the preceding closing of the switch, is transmitted after the striking of the movable contact against the other contact.
  • the movement energy of the movable contact can be buffered in a spring, while also here means for maintaining the movable contact ar0 applied, in order to lock it against the force of the drive means in the given position, when the switch is open. Also in this case said locking will occur at the moment that the movable contact has come to a standstill and all the movement energy has been buffered into the resilient means.
  • a switch in addition to contact vibration being omitted, a switch is provided, which can be switched on and off with very litcle energy. In principle only the energy lost by friction needs to be replenished. Besides, high initial velocities are possible when opening the contacts.
  • FIG.1 shows a vacuum switch, provided with a fixed contact 2 and a movable contact 3.
  • bellows provide the vacuum tight sealing of the vacuum interrupter.
  • the bellows 4 are also used for the driving of contact 3.
  • the movable contact 3 For switching on, in the first place, the movable contact 3 is moved away from the fixed contact 2, with the help of the electro-magnet 10. In doing so, the bellows 4 are stretched, so that both the bellows 4 and the atmospheric pressure will affect the movable contact 3.
  • the movable contact 3 is held in this stretched position by a locking mechanism 9, only shown in principle, consisting of a tiltable lever, pressed against the movable contact 3 by a spring. With the help of an electro-magnet, the lever can be turned to the left, whereby the locking is removed.
  • a buffer in the form of a spiral spring 6 or the like can be provided, in which then a conversion of kinetic or movement energy into potential energy will take place.
  • This locking mechanism 8 sees to it that no reversal of the movement of the mass 5 can occur.
  • This locking mechanism 8 can be of similar construction as the locking mechanism 9.
  • the mass 5 When switching off the switch, the mass 5 will be unlocked, after which this mass 5 is moved to the fixed contact 2, under the influence of the energy buffered in the spiral spring 6.
  • the impact energy which will arise then is converted again into a pressure wave in the fixed contact 2, which pressure wave propogates to the left through contact 2 and which in the left end is again converted in movement energy of the movable contact 3, by which the latter is driven to the left.
  • this impact energy of the mass 5 provides a very fast separation of the two contacts 2 and 3.
  • Fig. 2 shows another embodiment of the invention in which the locking mechanisms are not shown.
  • an extra energy buffer 13 is used here.
  • this energy buffer 13 the switching on energy can also be buffered. After unlocking, when switching on, this energy will, for example in the spring, which is shown, drive the movable contact 3 to the right, after which the same effects will arise as in the case of fig. 1, in which the mass 5 totally captures the impact energy.
  • This mass 5 is again taken up by a buffer, here in the form of an electric mass 6, for example made of rubber, in which the energy is converted and stored as potential energy. In the position, in which the mass 5 comes to a standstill after moving to the right in the drawing, this mass 5 is locked again. When switching off, this buffered potential energy can be used again for accelerating the movable contact 3.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Glass Compositions (AREA)
  • Saccharide Compounds (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Mechanisms For Operating Contacts (AREA)
EP84201353A 1983-09-21 1984-09-20 Interrupteur électrique Expired EP0138257B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84201353T ATE32150T1 (de) 1983-09-21 1984-09-20 Elektrischer schalter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8303244A NL8303244A (nl) 1983-09-21 1983-09-21 Elektrische schakelaar.
NL8303244 1983-09-21

Publications (2)

Publication Number Publication Date
EP0138257A1 true EP0138257A1 (fr) 1985-04-24
EP0138257B1 EP0138257B1 (fr) 1988-01-20

Family

ID=19842433

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84201353A Expired EP0138257B1 (fr) 1983-09-21 1984-09-20 Interrupteur électrique

Country Status (4)

Country Link
EP (1) EP0138257B1 (fr)
AT (1) ATE32150T1 (fr)
DE (1) DE3468955D1 (fr)
NL (1) NL8303244A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0284390A2 (fr) * 1987-03-24 1988-09-28 Mitsubishi Denki Kabushiki Kaisha Interrupteur à vide

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR685078A (fr) * 1929-11-16 1930-07-04 Mittelbadische Papiermanufaktu Sacs en papier
GB677466A (en) * 1950-01-27 1952-08-13 Gen Electric Co Ltd Improvements in or relating to electrical contactors
DE956423C (de) * 1953-03-10 1957-01-17 Licentia Gmbh Druckgasschalter, insbesondere mit freier Lufttrennstrecke
DE1045514B (de) * 1955-10-04 1958-12-04 Standard Elektrik Lorenz Ag Prellfreie Schaltkontaktanordnung
GB913745A (en) * 1960-04-28 1962-12-28 Kelvin & Hughes Ltd Improvements in and relating to a switch for electric pulse generation

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR685078A (fr) * 1929-11-16 1930-07-04 Mittelbadische Papiermanufaktu Sacs en papier
GB677466A (en) * 1950-01-27 1952-08-13 Gen Electric Co Ltd Improvements in or relating to electrical contactors
DE956423C (de) * 1953-03-10 1957-01-17 Licentia Gmbh Druckgasschalter, insbesondere mit freier Lufttrennstrecke
DE1045514B (de) * 1955-10-04 1958-12-04 Standard Elektrik Lorenz Ag Prellfreie Schaltkontaktanordnung
GB913745A (en) * 1960-04-28 1962-12-28 Kelvin & Hughes Ltd Improvements in and relating to a switch for electric pulse generation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0284390A2 (fr) * 1987-03-24 1988-09-28 Mitsubishi Denki Kabushiki Kaisha Interrupteur à vide
EP0284390A3 (fr) * 1987-03-24 1989-10-18 Mitsubishi Denki Kabushiki Kaisha Interrupteur à vide
US4926017A (en) * 1987-03-24 1990-05-15 Mitsubishi Denki Kabushiki Kaisha Vacuum breaker

Also Published As

Publication number Publication date
ATE32150T1 (de) 1988-02-15
EP0138257B1 (fr) 1988-01-20
DE3468955D1 (en) 1988-02-25
NL8303244A (nl) 1985-04-16

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