EP1127362B1 - Interrupteur a rupture brusque et a ouverture forcee avec tolerance de mise en place amelioree - Google Patents
Interrupteur a rupture brusque et a ouverture forcee avec tolerance de mise en place amelioree Download PDFInfo
- Publication number
- EP1127362B1 EP1127362B1 EP99950836A EP99950836A EP1127362B1 EP 1127362 B1 EP1127362 B1 EP 1127362B1 EP 99950836 A EP99950836 A EP 99950836A EP 99950836 A EP99950836 A EP 99950836A EP 1127362 B1 EP1127362 B1 EP 1127362B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- springs
- switch
- moving equipment
- conducting element
- housing
- 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
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/26—Snap-action arrangements depending upon deformation of elastic members
- H01H13/28—Snap-action arrangements depending upon deformation of elastic members using compression or extension of coil springs
- H01H13/285—Snap-action arrangements depending upon deformation of elastic members using compression or extension of coil springs having a symmetrical configuration
-
- 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
Definitions
- the present invention relates to an abrupt break switch.
- Snap switches are switches in which the power cut occurs abruptly, as opposed to switches in which the separation of the electrical contacts is slow, and depends on the speed of manual action of an operator.
- the switch the invention is more particularly a limit switch type, for which tolerances of installation and therefore of use are improved.
- a user is provided with, for a reduced size of a limit switch, a larger tolerance between a positive open position (POP) and an end position racing (PFC). The distance between these two positions can then be better exploited by the user to more easily stop a mobile, or absorb its dispersions after it has passed the POP position.
- POP positive open position
- PFC end position racing
- This positive opening must be capable of detaching the conductive element from the contact pads.
- the bonding concerned would have been that resulting from a weld by passage a short-circuit current (normalized) of one thousand amperes. This means that the tilting mechanism and the lever are very robust to cause this takeoff. In normal times, of course, such a takeoff is not necessary since the switch will have operated the expected abrupt break.
- the solution of the invention consists in making exercise the positive opening action, and the deformation of the moving assembly, on the same conductive element, the resting conductive element, the one which found at the front of this mobile equipment.
- the distance from the positive opening point of the end position will be greater with the invention than in the state of the cited technique.
- FIGS 1a to 1e show different states of the break switch abrupt of the invention.
- This switch has in a housing 1 schematically shown, four electrical contact pads 2 to 5. These studs are opposite two by two. In particular, stud 2 is opposite the stud 3 and the pad 4 opposite the pad 5. These contact pads are connected to electrical connections not shown. These electrical connections are intended to convey electrical potentials according to the closed state or open the switch.
- the pads 2 to 5 have to ensure the contacts of pads such as 6, possibly covered with a layer silver or other material capable of improving contact and not not cause a deposit when creating electric arcs.
- a mobile assembly 7 This mobile assembly drives on either side of a movement represented by the double arrow 8 conduction elements.
- a first conduction element before 9 is located opposite an end 10 of a pusher 11 by which is carried out an operation of the switch of the invention.
- Pusher 11 serves in particular of a limit switch type.
- a conduction element rear 12 is placed together in the moving assembly, on the other side of this with respect to the front conduction element 9. Elements 9 and 12 are used to establish electrical connections between pads 4 and 5 and 2 and 3 respectively.
- a set of two compression springs 13 and 14 is supported by a on the moving part 7 and on the other hand on another end 15 of the pusher 11.
- the springs 13 and 14 are in compression. They are oriented like the two sides of an isosceles triangle whose height would be in the direction of pusher 11.
- the switch also has a rocker control which will studied further on examining Figure 3 but whose effect can be symbolized by the action of a stop 16 on the front conduction element 9.
- the rocker control is such that the stop 16 moves in the direction of element 9 when the pusher 11 enters the housing 1. The penetration of the pusher 11 is effected by pushing on this pusher.
- the mobile assembly also includes a housing 17 for receiving a set of compensating springs18 and 19.
- the moving assembly 7 comprises for this housing 17 a cavity 20 surmounted by the element of conduction before 9.
- the element 9 is held in the cavity 20 by the springs 18 and 19 on the one hand, which press on this element 9 and on the bottoms 21 and 22 of the cavity, and by the presence on the other hand of overflows 23 and 24.
- the overflows 23 and 24 overflow from the top of the cavity 20 and retain element 9.
- the housing 17 made in the cavity 20 is located on the side of the front conductive element 9 and not, as in the prior art, on the side of the conductive element rear 12.
- FIG. 1a shows a deviation E, called small run or approach run, corresponding to the sinking of the push-button from position PRP to position PA-.
- This deviation E in terms of practical is generally of the order of 2 mm. It is necessary for the good operation of the limit switch during its service life (differential travel, tolerances, internal wear ).
- the springs 13 and 14 tend to call the push button 11 towards the front element 9. Or a stronger complementary spring that the resultant of the springs 13 and 14 and exerting a force in direction contrary, and not shown, then takes support on the housing 1 and on the push button 11 to bring it out. Or, in the PA + position, the springs 13 and 14 are at rest. To make the switch reversible, the first solution is adopted.
- FIG 1d we show that if we continue to press the pusher 11, it approaches a so-called POP position in which the stop 16 would come into contact with the conductive element 9 if it had remained stuck on pads 4 and 5. If the switch has operated normally, in the POP position, the stop 16 does not come into contact with the conductive element 9. On the other hand, if the conductive element has remained glued, in the POP position she comes into contact with him. We can also remember for the position POP not the position in which the stop 16 comes into contact with element 9 but rather a position in which the separation of the contact is guaranteed. This position is materialized by the end 25 of the stop 16.
- the moving element 7 must, to contain the compression springs 13 and 14 in their position corresponding to Figure 1a and in their position corresponding to Figure 1st, have an asymmetrical diamond shape.
- the asymmetry comes from the advantage of having the PA position closer to the PRP position than the PFC position in all switches. This makes it easier to use.
- the asymmetrical diamond shape means an imperfect diamond whose a part, here the part located on the side of the front conductive element 9, is closes at a sharper angle than the part closing on the element side conductor 12. Therefore the cavity 20 can have a U shape in which branches of the U can be much deeper than if this cavity had been arranged on the side where the closing angle of the rhombus is more obtuse.
- the branches of the U embrace the acute angle of the rhombus asymmetrical formed by a cavity 28 of the moving element 7 where move the springs 13 and 14.
- FIG. 1e it can be seen that the asymmetry results from the steeper inclination of the springs 13 and 14 due to the additional depression of the pusher 11.
- Figure 1f shows a comparison of what is produced in the state of the art.
- Figure 2 shows a comparative position of the end 15 in the positions PRP, PA, POP and PFC in the state of the art, in the improvement made in the patent cited above, and according to the invention.
- the small front race, or approach race is of the order of 2 mm while the total stroke is normally of the order of 5 mm.
- the stroke guaranteed positive opening residual CRA + is around 0.5 mm.
- the distance separating the positions PA and POP was previously only related to manufacturing tolerances of switches.
- the POP position can be approximated to the PA position by about 0.5 mm.
- the POP position goes be approached 1.5 mm in such a way that from the PA position to the new POP position remains only a deviation of about 1 mm.
- Figure 3 shows on the pusher 11, the end 10, the end 15 which drives the springs 13 and 14 as well as an operating end 29 which operates the stop 16.
- the stop 16 also called a pallet, has essentially an axis of rotation 30 here perpendicular to the plane of the figure 3 and to the elongated direction of the pusher 11.
- the end 29 presses by a support point 31 on the pallet 16, This support is exerted with a maneuvering radius 32.
- one end 33 of the pallet comes into contact with the element front conductor 9 (if glued).
- the operating range of the end 33 is the radius 34 whose value is, at the beginning, greater than the radius 32. Under these conditions for a slight advance of the end 29, there will have a large projection from the end 33.
- the pallet 16 has tilted towards the end of the pushed.
- the end 33 has a useful radius of thrust on element 9 of value less than that of radius 34.
- By opposition radius 32 increases. This means that towards the end of the stroke, the overtravel 26 of the pusher 11 will be greater than the overtravel 27 of the front conductive element 9.
- FIG. 3 also shows part of the housing 1 and, schematically, a complementary compressed spring 35 tending to make bring out push-button 11.
- the PRP-PFC distance corresponds in practice to spring travel 35.
- the invention therefore ultimately results in the fact that the overtravel 27 may be larger than in the prior art, thanks to the asymmetry mainly, of course the overtravel 26 will be also, larger. Furthermore as indicated above the point POP positive opening will be brought very close to the PA action point.
- the invention then has the advantage, for the user, of a greater CRA + guaranteed positive opening overtravel, without increase of the size of the limit switch.
Landscapes
- Push-Button Switches (AREA)
- Switch Cases, Indication, And Locking (AREA)
- Keying Circuit Devices (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Description
- un boítier muni de quatre plots de contact électrique, en regard deux à deux,
- dans ce boítier, un équipage mobile entraínant, de part et d'autre de son mouvement, un élément arrière de conduction et un élément avant de conduction, ces éléments étant amenés respectivement alternativement au contact de deux premiers ou deux seconds plots correspondants en regard,
- un jeu de ressorts de compression en appui sur cet équipage mobile et sur une extrémité d'un poussoir de manoeuvre de l'interrupteur,
- une commande à bascule reliée mécaniquement au poussoir et susceptible d'exercer une action positive sur l'élément avant de conduction pour une position poussée en avant du poussoir,
- un jeu de ressorts de compensation interposés entre l'équipage mobile et un élément de contact,
- un logement dans un plan de l'équipage mobile pour recevoir le jeu des ressorts de compensation,
- ce logement est situé du coté de l'élément conducteur avant.
- Figures 1a à 1f: des représentations schématiques de l'interrupteur à rupture brusque de l'invention dans différentes positions de manoeuvre et sa comparaison à une représentation du même type pour l'état de la technique ;
- Figure 2: un diagramme montrant les différentes tolérances procurées par les dispositifs de l'état de la technique et, comparativement, par celui de l'invention ;
- Figure 3 : une représentation schématique de l'action de bascule utilisée pour une ouverture positive de l'interrupteur de l'invention.
Claims (3)
- Interrupteur à rupture brusque comportantun boítier (1) muni de quatre plots (2-5) de contact électrique, en regard deux à deux,dans ce boítier, un équipage mobile (7) entraínant, de part et d'autre de son mouvement (8), un élément arrière (12) de conduction et un élément avant (9) de conduction, ces éléments étant amenés respectivement alternativement au contact de deux premiers (2, 3) et deux seconds (4, 5) plots correspondants en regard,un jeu de ressorts (13, 14) de compression en appui sur cet équipage mobile et sur une extrémité (15) d'un poussoir (11) de manoeuvre de l'interrupteur,une commande (16) à bascule reliée mécaniquement au poussoir et susceptible d'exercer une action positive sur l'élément avant de conduction pour une position poussée en avant du poussoir,un jeu de ressorts (18, 19) de compensation interposés entre l'équipage mobile et un élément de contact,un logement (17) dans un plan de l'équipage mobile pour recevoir le jeu des ressorts de compensation,ce logement est situé du coté de l'élément conducteur avant (9).
- Interrupteur selon la revendication 1, caractérisé en ce que les ressorts de compensation exercent un effort plus important, sur l'élément conducteur avant, que la résultante, dans le sens de la poussée, d'un effort de compression exercé par les ressorts de compression.
- Interrupteur selon l'une des revendications 1 à 2, caractérisé en ce que l'équipage mobile comporte un logement en losange dissymétrique pour recevoir les ressorts de compression, le logement des ressorts de compensation étant situé du coté de l'angle le plus aigu de ce losange dissymétrique.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9813810 | 1998-11-03 | ||
FR9813810A FR2785441B1 (fr) | 1998-11-03 | 1998-11-03 | Interrupteur a rupture brusque et a ouverture forcee avec tolerance de mise en place amelioree |
PCT/FR1999/002603 WO2000026929A1 (fr) | 1998-11-03 | 1999-10-26 | Interrupteur a rupture brusque et a ouverture forcee avec tolerance de mise en place amelioree |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1127362A1 EP1127362A1 (fr) | 2001-08-29 |
EP1127362B1 true EP1127362B1 (fr) | 2002-08-07 |
Family
ID=9532307
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99950836A Expired - Lifetime EP1127362B1 (fr) | 1998-11-03 | 1999-10-26 | Interrupteur a rupture brusque et a ouverture forcee avec tolerance de mise en place amelioree |
Country Status (7)
Country | Link |
---|---|
US (1) | US6486428B1 (fr) |
EP (1) | EP1127362B1 (fr) |
JP (1) | JP2002529889A (fr) |
AT (1) | ATE222022T1 (fr) |
DE (1) | DE69902484T2 (fr) |
FR (1) | FR2785441B1 (fr) |
WO (1) | WO2000026929A1 (fr) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2830979B1 (fr) * | 2001-10-12 | 2004-07-16 | Soderep Ecans Sa | Dispositif de verrouillage mecanique bistable d'un mobile en translation, et coupe-batterie equipe de ce dispositif |
US7211758B2 (en) * | 2005-07-12 | 2007-05-01 | Defond Components Limited | Circuit interrupter that produces snap-action connection and disconnection between electrical contacts |
US20080041708A1 (en) * | 2006-07-07 | 2008-02-21 | Judco Manufacturing, Inc. | Dual mode switch |
CN103177884B (zh) * | 2011-12-26 | 2016-09-14 | 上海电科电器科技有限公司 | 低压电器的触头结构 |
CN107134380B (zh) * | 2017-06-05 | 2019-08-02 | 漳州聚安美电气科技有限公司 | 限位开关芯部结构 |
CN107039203B (zh) * | 2017-06-05 | 2019-08-02 | 漳州聚安美电气科技有限公司 | 一种防止动作死点的开关芯部结构 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2245634A (en) * | 1940-03-27 | 1941-06-17 | John C Yingling | Switch mechanism |
US2641663A (en) * | 1949-07-28 | 1953-06-09 | Cutler Hammer Inc | Electric switch |
US3270157A (en) * | 1964-09-24 | 1966-08-30 | Arrow Hart & Hegeman Electric | Snap mechanism for slow-break electric switches |
US3624332A (en) * | 1970-09-09 | 1971-11-30 | Oak Electro Netics Corp | Snap switch |
ATE32285T1 (de) * | 1983-09-08 | 1988-02-15 | Square D Starkstrom Gmbh | Schaltvorrichtung, insbesondere fuer endschalter oder grenztaster. |
FR2575592B1 (fr) * | 1984-12-28 | 1987-02-06 | Telemecanique Electrique | Appareil interrupteur a equipage mobile equilibre et ouverture forcee |
FR2579009B1 (fr) * | 1985-03-13 | 1988-11-10 | Telemecanique Electrique | Interrupteur electrique a ouverture forcee de ses contacts repos |
DE3740360A1 (de) * | 1986-12-02 | 1988-06-16 | Square Spa | Schalter mit schnelloesung und moeglichkeit zur zwangsoeffnung der kontakte, insbesondere fuer wegbegrenzungseinrichtungen |
DE4301213C1 (de) * | 1993-01-19 | 1994-05-19 | Preh Elektro Feinmechanik | Drucktastenschalter |
DE4428285C1 (de) * | 1994-08-10 | 1995-07-06 | Preh Elektro Feinmechanik | Drucktastenschalter |
-
1998
- 1998-11-03 FR FR9813810A patent/FR2785441B1/fr not_active Expired - Fee Related
-
1999
- 1999-10-26 WO PCT/FR1999/002603 patent/WO2000026929A1/fr active IP Right Grant
- 1999-10-26 DE DE69902484T patent/DE69902484T2/de not_active Expired - Lifetime
- 1999-10-26 AT AT99950836T patent/ATE222022T1/de not_active IP Right Cessation
- 1999-10-26 JP JP2000580224A patent/JP2002529889A/ja active Pending
- 1999-10-26 US US09/830,883 patent/US6486428B1/en not_active Expired - Lifetime
- 1999-10-26 EP EP99950836A patent/EP1127362B1/fr not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP1127362A1 (fr) | 2001-08-29 |
JP2002529889A (ja) | 2002-09-10 |
ATE222022T1 (de) | 2002-08-15 |
WO2000026929A1 (fr) | 2000-05-11 |
FR2785441B1 (fr) | 2001-01-26 |
DE69902484D1 (de) | 2002-09-12 |
FR2785441A1 (fr) | 2000-05-05 |
DE69902484T2 (de) | 2003-05-22 |
US6486428B1 (en) | 2002-11-26 |
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