EP0373018A1 - Handbetätigter Mechanismus für schnelle Unterbrechung für elektrische Schalter - Google Patents

Handbetätigter Mechanismus für schnelle Unterbrechung für elektrische Schalter Download PDF

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Publication number
EP0373018A1
EP0373018A1 EP89403163A EP89403163A EP0373018A1 EP 0373018 A1 EP0373018 A1 EP 0373018A1 EP 89403163 A EP89403163 A EP 89403163A EP 89403163 A EP89403163 A EP 89403163A EP 0373018 A1 EP0373018 A1 EP 0373018A1
Authority
EP
European Patent Office
Prior art keywords
contact arm
link
movable contact
contacts
axis
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
EP89403163A
Other languages
English (en)
French (fr)
Other versions
EP0373018B1 (de
Inventor
Patrick Comtois
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.)
Telemecanique SA
Original Assignee
La Telemecanique Electrique SA
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 La Telemecanique Electrique SA filed Critical La Telemecanique Electrique SA
Publication of EP0373018A1 publication Critical patent/EP0373018A1/de
Application granted granted Critical
Publication of EP0373018B1 publication Critical patent/EP0373018B1/de
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
    • 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
    • H01H5/06—Energy stored by deformation of elastic members by compression or extension of coil springs
    • H01H5/12—Energy stored by deformation of elastic members by compression or extension of coil springs having two or more snap-action motions in succession
    • 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 present invention relates to a manual snap-action control mechanism for the opening and closing of two respectively fixed and movable contacts of an electric switch, the movable contact being carried by a contact arm rocking around a fixed axis, of the type comprising: - a link articulated by one of its ends on the movable contact arm, - a control member which can be moved under the action of a manual operating member between a contact opening position and a closed position and vice versa, and actuating the rod as a result of manual operation in the direction of opening or closing of contacts, - an energy accumulator spring cooperating with the other end of the link and urging it so that, following an operation in the opening direction of the contacts, a movement of the control member causes in the same direction of maneuver first by a first neutral passage, a tilting of the link ensuring a maintenance of the movable contact arm in the closed position, then by a second neutral passage, a sudden opening of the movable contact arm.
  • this mechanism For the opening operation of the contacts of an electric switch, this mechanism involves two successive neutral shifts using the same energy storage spring, the first causing the rod to tilt while holding firmly the movable contact arm on the fixed contact, the second causing, as a result of the tilting of the link, an abrupt tilting of the movable contact arm to its open position.
  • This mechanism is therefore particularly well suited for manual control of the opening of an electric switch because it allows, during the movement of the control member, to maintain the contact pressure almost constant until the abrupt opening. contacts.
  • the present invention therefore aims to design the same manual control mechanism with snap for electric switch, of the type described above, which allows both to maintain the contact pressure almost constant until the abrupt opening of the contacts and make a slow approach before the abrupt closing of the contacts, in a simple way and using the same energy storage spring.
  • a manual control mechanism with abrupt break of the type described above that is to say adapted to cause an abrupt opening of the contacts after a double overshoot of neutral
  • the link carries a drive finger engaged in a clearance light formed in the control member and coming to cooperate by pressing with the finger during a movement of the control member so as to exert on the finger, ie traction to a manual operation in the direction of opening of the contacts in order to drive the link towards the first neutral passage, that is to say a push following a manual operation in the direction of closing of the contacts so that a drive of the link by the finger in the same direction of operation first causes a progressive tilting of the movable contact arm aimed at approaching the fixed contact, then by a passage d e neutral a sudden closure of the movable contact arm.
  • the movable contact arm has the shape of a U, the two free ends of which are crossed by the same axis defining the axis of tilting of the arm and the central wing of which has in its middle a projection directed towards the outside of the U and carrying the mobile contact
  • the link also has the shape of a U arranged in transverse inclination between the two lateral wings of the movable contact arm in U and coupled at the end to each of the wings by means of a hinge pin while being kept in stable equilibrium by means of the energy storage spring hooked in support on the central branch of the U-shaped link
  • the drive finger is mounted square on the outer face of one of the two lateral branches of the link and comes into engagement in the lumen of the control member passing over the corresponding lateral wing of the movable contact arm.
  • the energy storage spring is a tension spring, the end opposite to that cooperating with the rod is anchored on a fixed axis parallel to the tilting axis of the movable contact arm.
  • the snap-action control mechanism according to the invention will be described in relation to an electrical switch device with a single pole, it being understood that in the case of a multipole switch device, the housing thereof houses as many snap mechanisms as there are poles; for this multipolar version, we will specify how the manual control of the various poles of the device is carried out.
  • the snap mechanism is designated by the general reference 10 and is used for manual control of a single-pole switch comprising an insulating housing 12 in which are housed a fixed contact 13 and a movable contact 14 carried by one end of a contact arm 15, which arm 15 is pivotally mounted at its end opposite to the movable contact 14 on a fixed axis 17 integral with the housing 12.
  • the movable contact arm 15 has the general shape of a U, the central wing 15a of which carries in its middle a projection or projection forming a finger 15b coming in one piece with the U and carrying at the end the movable contact 14, and the two lateral wings 15c, 15d of which are crossed at the end by the same fixed axis 17 constituting the pivot axis of the contact arm 15.
  • the snap mechanism 10 comprises a link 19 which also has in this example, FIG. 6, the general shape of a U which is arranged transversely between the two lateral wings 15c, 15d of the U-shaped contact arm, 15, and which is articulated by its two free ends on the two lateral wings 15c, 15d of the contact arm 15, on the side of the central wing 15a of the latter, respectively by means of two axes of articulation, only one of which is visible at 20 in FIG. 6, arranged parallel to the fixed axis 17 of the contact arm 15.
  • a manual operating button 25 located outside the housing 12 is pivotally mounted about an axis 26 perpendicular to the axis 17 and cooperates with a control rocker 28 pivotally mounted on a bearing 29 with an axis 30 parallel to the axis 17.
  • a suitable mechanical connection with meshing and / or cam makes it possible to transform the rotary movement of the button 25 into a correlative rotary movement of the rocker 28.
  • the rocker 28 is formed by a shaft of axis 30 extending below the two lateral wings 15c, 15d of the contact arm 15 and surmounted by an annular sector 32 extending backwards of the lateral wing 15d of said arm and having an imprint with two notches 32a, 32b intended to cooperate with a connecting piece 34 carrying tenons 34a, 34b (FIGS. 1 to 5); the part 34 is capable of rotating around the axis 26 in response to the pivoting of the button 25 and it has, for this purpose, a square 34c cooperating with a recess provided in the button 25.
  • the rocker 28 has a clearance light 36 in which is engaged a drive finger 38, for example cylindrical, which is mounted square on the outer face of the side branch of the connecting rod 19 adjacent at wing 15d, above the latter.
  • a drive finger 38 for example cylindrical, which is mounted square on the outer face of the side branch of the connecting rod 19 adjacent at wing 15d, above the latter.
  • the articulated link 19 In the closed position of the contacts, illustrated in FIG. 1, the articulated link 19 is kept slightly inclined in a high position of stable equilibrium with respect to the contact arm 15 by means of the tension spring 22; in this Figure 1, there is shown in D the line of action of the spring 22, and in D ′ the line passing through the points 19a, 20, these two lines D, D ′ forming an acute angle oriented downwards.
  • the drive finger 38 is, moreover, disposed on the link 19 so as to be in abutment against the movable contact arm 15 in the closed position, shown in FIG. 1; in this position, all the energy of the spring 22 is therefore transmitted via the finger 38 to the contact arm 15, which makes it possible to apply the desired contact pressure and to keep it even in the event of wear of the contacts .
  • the button 25, capable of rotation about the axis 26, occupies the on position (denoted “1" in FIG. 7) and cooperates via the connecting piece. 34 with studs 34a, 34b with the indentation 32a, 32b of the rocker 28.
  • the operator turns the button 25 around the axis 26 to bring it from the on position to the off position (denoted “0" in FIG. 7). ).
  • the rotation of the button 25 is then 90 ° but can, of course, take place at a different angle.
  • the rotation of the button 25 from “1" to “0” determines the rotation around the axis 26 of the connecting piece 34 whose tenon 34a engages in the notch 32a of the imprint of the rocker 28. It results in a counterclockwise pivoting of the rocker 28 around the axis 30.
  • the light 36 of the latter is shaped so as to come to cooperate by pressing with the drive finger 38 of the rod 19 in order to exert traction on the finger 38 tending to drive the rod 19 counterclockwise; the line of action of the spring 22 then moves to cross a first dead center corresponding to the alignment of the points 19a, 20, 23, as illustrated in FIG. 2.
  • the articulated link 19 After passing this first dead center, in a second stage, the articulated link 19 suddenly switches between the two lateral wings 15c, 15d (FIG. 6) of the contact arm 15 and the line of action of the spring 22 then crosses a second point death corresponding to the alignment of the points 17, 19a, 23 as illustrated in FIG. 3; at the time of crossing this second dead center, the spring 22 acts on the movable contact arm 15 which then suddenly switches counterclockwise to the open position, shown in FIG. 4.
  • the contact closure operation consists of a slow approach to the mobile contact which is dependent on the operator, followed by a sudden closure which is independent of the operator and which takes place on a short distance, thus preventing the occurrence of the contact bounce phenomenon.
  • the manual control of the contact arms 15 of the various poles is carried out from the button 25 on as many rockers 28 as there are poles, the rockers being coupled together.

Landscapes

  • Push-Button Switches (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Tumbler Switches (AREA)
EP19890403163 1988-11-29 1989-11-17 Handbetätigter Mechanismus für schnelle Unterbrechung für elektrische Schalter Expired - Lifetime EP0373018B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8815551A FR2639759B1 (fr) 1988-11-29 1988-11-29 Mecanisme de commande manuelle a rupture brusque pour interrupteur electrique
FR8815551 1988-11-29

Publications (2)

Publication Number Publication Date
EP0373018A1 true EP0373018A1 (de) 1990-06-13
EP0373018B1 EP0373018B1 (de) 1993-07-14

Family

ID=9372341

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890403163 Expired - Lifetime EP0373018B1 (de) 1988-11-29 1989-11-17 Handbetätigter Mechanismus für schnelle Unterbrechung für elektrische Schalter

Country Status (4)

Country Link
EP (1) EP0373018B1 (de)
DE (1) DE68907572T2 (de)
ES (1) ES2041433T3 (de)
FR (1) FR2639759B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ300740B6 (cs) * 2002-09-16 2009-07-29 Oez S.R.O. Zarízení pro rucní ovládání a blokování spínacích prístroju, zejména jisticu

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1453416A (fr) * 1965-08-06 1966-06-03 Comp Generale Electricite Perfectionnements aux mécanismes à rupture brusque
DE1463194B2 (de) * 1962-07-25 1970-09-17 General Electric Co., Schenectady, N.Y. (V.St.A.) Selbstschalter mit einer Einrichtung zur Verhinderung des Zurückspringens des beweglichen Kontaktträgerarmes in seine Schließstellung nach einer Schalterauslösung
FR2071256A5 (de) * 1969-12-22 1971-09-17 Merlin Gerin
DE8235646U1 (de) * 1982-12-18 1983-06-01 Westdeutsche Elektrogerätebau GmbH, 4770 Soest Schaltvorrichtung mit unabhängig von der Betätigungsgeschwindigkeit auslösbarer Sprungfunktion
EP0193440A1 (de) * 1985-02-14 1986-09-03 Telemecanique Schutzschalter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1463194B2 (de) * 1962-07-25 1970-09-17 General Electric Co., Schenectady, N.Y. (V.St.A.) Selbstschalter mit einer Einrichtung zur Verhinderung des Zurückspringens des beweglichen Kontaktträgerarmes in seine Schließstellung nach einer Schalterauslösung
FR1453416A (fr) * 1965-08-06 1966-06-03 Comp Generale Electricite Perfectionnements aux mécanismes à rupture brusque
FR2071256A5 (de) * 1969-12-22 1971-09-17 Merlin Gerin
DE8235646U1 (de) * 1982-12-18 1983-06-01 Westdeutsche Elektrogerätebau GmbH, 4770 Soest Schaltvorrichtung mit unabhängig von der Betätigungsgeschwindigkeit auslösbarer Sprungfunktion
EP0193440A1 (de) * 1985-02-14 1986-09-03 Telemecanique Schutzschalter

Also Published As

Publication number Publication date
DE68907572T2 (de) 1994-01-05
DE68907572D1 (de) 1993-08-19
EP0373018B1 (de) 1993-07-14
ES2041433T3 (es) 1993-11-16
FR2639759B1 (fr) 1991-01-18
FR2639759A1 (fr) 1990-06-01

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