EP0494278B1 - Commutateur electrique - Google Patents

Commutateur electrique Download PDF

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Publication number
EP0494278B1
EP0494278B1 EP91912046A EP91912046A EP0494278B1 EP 0494278 B1 EP0494278 B1 EP 0494278B1 EP 91912046 A EP91912046 A EP 91912046A EP 91912046 A EP91912046 A EP 91912046A EP 0494278 B1 EP0494278 B1 EP 0494278B1
Authority
EP
European Patent Office
Prior art keywords
bridging contact
motion
electric switch
projection
feature
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
Application number
EP91912046A
Other languages
German (de)
English (en)
Other versions
EP0494278A1 (fr
Inventor
Georg Hofmann
Hubert Spazierer
Adam Weber
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.)
ITT Automotive Europe GmbH
Original Assignee
ITT Automotive Europe GmbH
Alfred Teves 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 ITT Automotive Europe GmbH, Alfred Teves GmbH filed Critical ITT Automotive Europe GmbH
Publication of EP0494278A1 publication Critical patent/EP0494278A1/fr
Application granted granted Critical
Publication of EP0494278B1 publication Critical patent/EP0494278B1/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
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/40—Contact mounted so that its contact-making surface is flush with adjoining insulation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/365—Bridging contacts

Definitions

  • the invention relates to an electrical switch in which conductor tracks are firmly connected to a base plate made of an insulating material.
  • a switch is described for example in DE-A-1904616. With this switch, the conductor tracks formed by etching out are leveled by means of a pressing process, so that they may be flush with the surface of the base plate.
  • DE-A-37 37 907 describes a switch in which the conductor tracks are designed as flat surface sections of a sheet metal blank which are cut out of the originally full-surface sheet metal blank by punching.
  • the conductor tracks are initially still connected to one another by connecting webs, so that the sheet metal board as a whole can be embedded in a base plate made of insulating material, during the manufacture of which it is partially extrusion-coated by plastic injection molding.
  • the connecting webs between the conductor tracks are subsequently removed by drilling through the base plate and the connecting webs.
  • One or more contact bridges sit in a guiding and actuating device, by means of which they can be moved along the assigned conductor tracks.
  • the contact bridges are in contact with the conductor tracks under the action of pressure springs.
  • the contact bridges are mostly punched out of sheet metal blanks. Sometimes they are also bent. If greater manufacturing tolerances occur on the guiding and actuating device for the contact bridge and / or on the base plate having the conductor tracks, which are generally produced as injection-molded plastic parts, for example the top of the base plate has the same height as If the top of one of the conductor tracks reaches or even protrudes slightly above it, the electrical switching properties of such a switch can be severely impaired. If the space between the conductor tracks is filled with insulating material at a transition point, it is easier to slide the contact bridge over the transition point.
  • the invention is therefore based on a switch of the type resulting from the preamble of claim 1.
  • the object of the invention is to develop such a switch so that its electrical switching properties can be improved with little effort.
  • This object is achieved by the combination of features resulting from the characterizing part of claim 1.
  • the invention consists in using a conductor track formed from sheet metal, the flat part of which is used for anchoring in the switch, while the rail-shaped elevation creates a reliable contact for the contact bridge.
  • the conductor tracks thus each have at least one elevation which extends at least over the entire associated movement range of the contact bridge, only the transition points between two conductor tracks lying one behind the other being excluded.
  • the contact bridge lies exclusively on this elevation of the interconnects assigned to one another. This results in a clearly defined contact surface between the contact parts interacting in pairs. This always results in consistently good switching properties, which are largely independent of any manufacturing tolerances of the metal parts and the plastic parts accommodating them.
  • the elevations can be produced very easily and very inexpensively.
  • the transition of the Contact bridge considerably facilitated and the contact bridge does not get caught.
  • the contact bridge receives a cylindrically shaped contact surface and contact surface without burrs, which acts as a skid in both directions of movement. This considerably improves the sliding behavior of the contact bridge on the conductor tracks and at the transition points and also further reduces the occurrence of disturbances in the movement sequence, in particular at the transition points. All of this is accomplished in a very inexpensive way.
  • This configuration of the switch also makes it possible, in accordance with claim 14, to attach locking lugs in pairs in the area of both end faces of the contact bridge with opposite orientation. This in turn results in a symmetrical mounting of the contact bridge in the guiding and actuating device, thereby preventing the contact bridge from tilting or even tilting.
  • Such a contact bridge is also used with advantages regardless of the features of the preceding claims.
  • the switch 20 in the embodiment shown in FIGS. 1 to 3 has a housing 21 which is formed by a lower part 22, an upper part 23 and a cover 24.
  • An actuation button 25 is arranged on the cover 24.
  • the lower part 22 is made of a thermoplastic material with good electrical insulation properties in a spraying process. It has a base plate 26, in the top 27 of which two sheet metal plates 28 and 29 with different conductor tracks (FIG. 3) and the associated connecting tabs 31 and 32 (FIG. 1) are embedded.
  • the connecting lugs 31 and 32 protrude vertically from the underside 33 of the base plate 26 and are aligned in two rows.
  • the five longitudinal walls 34 to 38 and two transverse walls 39 and 40 are arranged on the upper side 27 of the base plate 26.
  • the five longitudinal walls are arranged parallel to one another at certain intervals and adjoin the transverse walls 39 and 40 at their two ends.
  • the two outer longitudinal walls 34 and 38 together with the transverse walls 39 and 40 form a closed peripheral wall of the lower part.
  • the two longitudinal walls 35 and 36 and the two longitudinal walls 37 and 38 have the same clear distance from one another. Together with the associated section of the transverse walls 39 and 40, they delimit a chamber 41 and 42, respectively.
  • a carriage 43 or 44 is accommodated therein, which is shorter than the chamber in question.
  • the clear width of the chambers 41 and 42 and the width of the carriage 43 and 44 are matched to one another in such a way that the carriages are guided in a straight line in the chambers.
  • the carriages 43 and 44 are designed identically to one another. Each of them has three recesses which are aligned transversely to their direction of displacement. They are down, i. H. towards the base plate 26, open and at least partially closed towards the top. Depending on the requirements of the circuit diagram, a contact bridge is inserted in one or more of the recesses. In the carriage 43, there are the two contact bridges 45 and 46. In the carriage 44, there are the two contact bridges 47 and 48. The contact bridges are each pressed down by a helical compression spring 49, which is supported on the ceiling of the carriage.
  • the paired longitudinal walls 35 and 36 and 37 and 38 and the base plate 26 together form part of a guide and Actuator 50 for the carriages 43 and 44 and the contact bridges arranged thereon.
  • the chambers of the lower part, in particular the chambers 41 and 42 for the slides 43 and 44, are covered by the upper part 23, which is provided with a base 51, the underside of which is smooth and flat, at least in the region of the chambers 41 and 42.
  • the bottom 51 of the upper part 23 therefore forms a further part of the guiding and actuating device 50. It prevents the carriages 43 and 44 from being able to deflect upwards as a result of the reaction force of the helical compression springs 49.
  • actuating rib 52 or 53 extends through it, which is fixedly connected to the carriage 43 or 44, and is generally integrally formed thereon.
  • the actuating ribs 52 and 53 are provided on the mutually facing sides with a rack profile 54 and 55, respectively.
  • a pinion 56 engages therein, which is rotatably mounted by means of a vertically aligned bearing journal 57.
  • the bearing pin 57 is integrally formed on the upper part 23.
  • the hub 58 of the toothed pinion 56 extends through an opening 59 in the cover 24.
  • the actuation button 25 is connected in a rotationally fixed manner to this hub 58.
  • the two sheet metal plates 28 and 29 (FIG. 3) firmly connected to the base plate 26 each have two plate sections 61 and 62 or 63 and 64, which are arranged next to one another with respect to the central plane of the carriages 43 and 44.
  • the circuit board plate is provided with an elevation in the form of a bulge, as is illustrated in FIG. 4 for the circuit board section 61 by the elevation 65.
  • the board section 62 is provided with the elevation 66, the board section 63 with the elevation 67 and the board section 64 with the elevation 68.
  • the contact bridges in the carriages 43 and 44 rest on these elevations, which in each case results in a precisely defined contact point.
  • the two mutually associated circuit board sections 61 and 62 as well as 63 and 64 are either connected to one another in sections or are separated from one another in sections by longitudinal punchings 69, 71 or 72.
  • the board sections 61 to 64 are divided into individual, in part different lengths, lengths.
  • These longitudinal sections form the conductor tracks 81 to 86 in the area of the sheet metal plate 28 and the conductor tracks 87 to 90 in the area of the sheet metal plate 29.
  • the metal plates 28 and 29 have the inner edge on which the connecting lugs 31 and 32 are arranged, the interconnects which are adjacent to one another in the longitudinal direction are initially connected to one another by a web 91. These webs 91 are subsequently removed through a bore 92, which are indicated by dash-dotted lines in FIG. 3. Similarly, webs are initially also present at other locations on the sheet metal blanks, which are subsequently removed again by means of a bore.
  • the material of the base plate 26 can either be at the same height as the sheet metal plate outside the elevation of the conductor tracks, as shown in FIG. 5. However, it is more expedient if the base plate 26 has a gap 93 between two conductor tracks lying one behind the other, as shown in FIG.
  • a guide rib 94 on at least one side of the conductor track (FIG. 7).
  • Their height is at least approximately equal to the height of the elevations adjacent to the gap 93, for example the elevation 65, of the interconnects lying at the transition point, for example the interconnects 81 and 82. Or it is at most slightly higher.
  • Ramp sections 95 adjoin the guide rib 94 in both directions, which facilitate the sliding of the contact bridge onto the guide rib 94.
  • the sliding over of a contact bridge from the elevation of a conductor track to the elevation of the other conductor track or from a guide rib to the elevation of the adjacent conductor track can also be facilitated by the fact that the elevation of the conductor track does not end at the transition point with a sharp edge, as is the case in FIG 96 and its elevation 97 is shown, but that the end section of the conductor track is ramp-shaped, as shown in FIG. 5 on the right with the conductor track 98 and the end section 99 of its survey 100.
  • the folding back of such a contact bridge such as the folding back 101 of the contact bridge 45 (FIG. 9), faces the conductor tracks.
  • These contact bridges are first punched out in an H shape. They are folded along the center line of the web of the H-profile, so that they then have a U-shaped side view ( Figure 8). In the middle of their web part they have a small elevation, which are used to guide the helical compression springs 49.
  • a detent 107 and 108 can be formed on both legs 102 and 103 of the sheet metal blank 104 in the area of both end faces 105 and 106 of the contact bridge, which are produced by notching and simultaneous slight bending, as long as the sheet metal blank 104 is not yet folded. With the latching lugs 107 and 108, the contact bridges can be latched into one latching surface of the slide both in the longitudinal and in the transverse direction.
  • the elevation of a conductor track at least in sections a course which deviates within the width of a contact bridge from the movement line of a specific point of the contact bridge, so that when the contact bridge moves relative to the conductor tracks the contact point not only on the conductor tracks, but also hikes at the contact bridge.
  • a switch 110 shown in FIG. 11.
  • the contact bridges 111 and 112 are arranged on a pivoting part, not shown in detail, which is pivotably mounted on the lower part 113 by means of a circular recess 118.
  • the contact bridges 111 and 112 move during a swiveling movement of the swiveling part in each case on an arc-shaped movement path.
  • the conductor tracks with their elevations 114 to 117 each run in a straight line.
  • the outline of the elevation of the interconnects interacting with it can also be a straight line, which, however, encloses an acute angle with the line of movement of a point of the contact bridge.
  • the outline of the elevation of the conductor tracks can also be curved and also circular arc-shaped, as long as the movement line of a point of the contact bridge is not congruent with the course of the elevation. This can be achieved by aligning the curvatures in opposite directions or, in the same direction, by varying the size of the curvature, and even with the same curvature by mutually intertwining the two curvatures.

Landscapes

  • Push-Button Switches (AREA)
  • Manufacture Of Switches (AREA)

Abstract

Afin d'assurer un bon glissement entre un contact à pont et des bandes conductrices découpés dans une plaque de métal, un commutateur électrique comprend des bandes conductrices qui présentent au moins une protubérance qui s'étend au moins sur toute la zone de déplacement du contact à pont.

Claims (14)

  1. Interrupteur électrique présentant les caractéristiques suivantes:
    - une platine en tôle (28) comporte des pistes conductrices (81 ... 85) définies par des découpes (69, 73 ... 76),
    - la platine en tôle (28) est reliée de façon fixe, par surmoulage partiel par injection, à une plaque d'embase (26) faite en une matière isolante,
    - un pontet de contact (47, 48) peut être déplacé le long des pistes conductrices au moyen d'un dispositif d'actionnement et de guidage (50),
    caractérisé par les caractéristiques suivantes:
    - les pistes conductrices (81 ... 85) comportent chacune au moins un bossage (65), qui s'étend au moins sur toute la plage de déplacement du pontet de contact (45, 46), le pontet de contact (47, 48) étant en appui sur le bossage.
  2. Interrupteur électrique selon la revendication 1, caractérisé par la caractéristique suivante:
    - le bossage (65) des pistes conductrices (81 ... 85) est réalisé sous forme d'un bombement de la platine en tôle (61).
  3. Interrupteur électrique selon la revendication 1, caractérisé par la caractéristique suivante:
    - le bossage des pistes conductrices est réalié sous forme d'un bossage plaqué d'un métal, de préférence plaqué d'argent.
  4. Interrupteur électrique selon l'une des revendications 1 à 3, caractérisé par la caractéristique suivante:
    - au niveau du point de passage entre deux pistes conductrices (96; 98) situées l'une derrière l'autre dans le sens du mouvement du pontet de contact (46), les sections terminales (99) des bossages (100), qui sont orientées en face l'une de l'autre, sont configurées en forme de rampes.
  5. Interrupteur électrique selon l'une des revendications 1 à 4, caractérisé par les caractéristiques suivantes:
    - au niveau du point de passage entre deux pistes conductrices (81; 82) situées l'une derrière l'autre dans le sens du mouvement du pontet de contact (46), une nervure de guidage (94) est aménagée d'un côté au moins des pistes conductrices,
    - - la nervure étant orientée au moins à peu près parallèlement à la trajectoire du pontet de contact (46), et
    - - la nervure s'étendant au moins à peu près du bout du bossage (65) de l'une des pistes conductrices (81) jusqu'au début du bossage (65) de la piste conductrice (82) qui lui succède.
  6. Interrupteur électrique selon la revendication 5, caractérisé par la caractéristique suivante:
    - la hauteur de la nervure de guidage (94) est soit égale, soit légèrement supérieure à la hauteur des bossages contigus (65).
  7. Interrupteur électrique selon la revendication 5 ou 6, caractérisé par la caractéristique suivante:
    - la nervure de guidage (94) comporte, à l'avant et/ou à l'arrière, une section de rampe orientée dans le sens du mouvement du pontet de contact (46).
  8. Interrupteur électrique selon l'une des revendications 1 à 7, caractérisé par la caractéristique suivante:
    - le bossage (114 ... 117) d'une piste conductrice présente, par secteurs au moins, un tracé qui, dans les limites de la largeur de la trajectoire du pontet de contact (111, 112), s'écarte de la trajectoire d'un point situé sur le pontet de contact (111, 112).
  9. Interrupteur électrique selon la revendication 8, présentant une trajectoire droite du pontet de contact, caractérisé par la caractéristique suivante:
    - le bossage de la piste conductrice s'étend en ligne droite et définit avec une trajectoire d'un point du pontet de contact un angle inscrit aigu.
  10. Interrupteur électrique selon la revendication 8, présentant une trajectoire droite du pontet de contact, caractérisé par la caractéristique suivante:
    - le bossage de la piste conductrice suit un tracé courbe.
  11. Interrupteur électrique selon la revendication 8, présentant une trajectoire courbe du pontet de contact (111, 112), et notamment une trajectoire en forme d'arc de cercle, caractérisé par la caractéristique suivante:
    - le bossage (114 ... 117) de la piste conductrice s'étend en ligne droite et le long d'une corde sur la trajectoire d'un point du pontet de contact (111, 112).
  12. Interrupteur électrique selon la revendication 8, présentant une trajectoire courbe du pontet de contact, et notamment une trajectoire en forme d'arc de cercle, caractérisé par les caractéristiques suivantes:
    - le bossage de la piste conductrice suit un tracé courbe, en particulier un tracé en forme d'arc de cercle,
    - la courbure du bossage est dirigée dans le même sens que la courbure de la trajectoire d'un point du pontet de contact, et est soit supérieure, soit inférieure à celle-ci, ou est inclinée par rapport à celle-ci, en projection horizontale,
    - et/ou la courbure du bossage est contraire à la courbure de la trajectoire d'un point du pontet de contact.
  13. Interrupteur électrique selon l'une des revendications 1 à 12, caractérisé par la caractéristique suivante:
    - le pontet de contact (45) est formé par une pièce découpée et pliée en tôle, dont la ligne de crête de pliage (101) est dirigée face aux pistes conductrices (81 ... 86).
  14. Interrupteur électrique selon la revendication 13, caractérisé par la caractéristique suivante:
    - respectivement un cran d'arrêt (107, 108) est réalisé par encochage, puis pliage vers l'extérieur, sur l'une au moins des branches, de préférence sur les deux branches de la découpe pliée en tôle, au niveau des deux faces frontales (105, 106) du pontet de contact (45), la face d'arrêt du cran d'arrêt étant dirigée face à la ligne de crête de pliage (101).
EP91912046A 1990-06-29 1991-06-22 Commutateur electrique Expired - Lifetime EP0494278B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19904020821 DE4020821C2 (de) 1990-06-29 1990-06-29 Elektrischer Schalter
DE4020821 1990-06-29
PCT/EP1991/001156 WO1992000597A1 (fr) 1990-06-29 1991-06-22 Commutateur electrique

Publications (2)

Publication Number Publication Date
EP0494278A1 EP0494278A1 (fr) 1992-07-15
EP0494278B1 true EP0494278B1 (fr) 1997-12-10

Family

ID=6409383

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91912046A Expired - Lifetime EP0494278B1 (fr) 1990-06-29 1991-06-22 Commutateur electrique

Country Status (6)

Country Link
EP (1) EP0494278B1 (fr)
JP (1) JPH05501478A (fr)
BR (1) BR9105803A (fr)
DE (1) DE4020821C2 (fr)
ES (1) ES2110443T3 (fr)
WO (1) WO1992000597A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4330310A1 (de) * 1993-09-08 1995-03-09 Teves Gmbh Alfred Drehschalter mit Schleifkontaktgabe auf zylinderförmig gewölbten Schleifkontakten
DE19601985A1 (de) * 1996-01-20 1997-07-24 Teves Gmbh Alfred Schalter mit Abheberampe
JP5620802B2 (ja) * 2010-12-13 2014-11-05 パナソニック株式会社 ロータリスイッチ
JP6180841B2 (ja) * 2013-07-29 2017-08-16 株式会社ヴァレオジャパン スイッチ用の可動接点

Family Cites Families (19)

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Publication number Priority date Publication date Assignee Title
DE1892296U (de) * 1963-07-31 1964-05-06 Preh Elektro Feinmechanik Kontaktfeder fuer den schaltschieber von tastenschaltern.
US3268701A (en) * 1964-04-22 1966-08-23 Alloys Unltd Inc Clad electrical contacts
FR1561417A (fr) * 1968-02-12 1969-03-28
US3499126A (en) * 1968-07-24 1970-03-03 Litton Precision Prod Inc Electrical contact assembly with ramp guide
DE1904616B2 (de) * 1969-01-30 1976-12-16 Wandel U. Goltermann, 7410 Reutlingen Schalter mit kontakten aus flaechenhaften leitungszuegen
DE7524055U (de) * 1975-07-29 1975-12-18 Swf Rau G Gmbh Kontaktplatte für elektrische Schalter oder dergleichen, insbesondere für Kraftfahrzeug-Lenkstockschalter
DE7919940U1 (de) * 1979-07-12 1982-04-29 Honeywell Gmbh, 6050 Offenbach Elektrischer Schalter mit Gleitkontakten
US4311885A (en) * 1980-08-27 1982-01-19 Amf Incorporated Snap action slide switch
JPS58328U (ja) * 1981-05-26 1983-01-05 株式会社東海理化電機製作所 多方向スイツチ
JPS5853440U (ja) * 1981-10-06 1983-04-11 星電器製造株式会社 スライドスイツチ
DE3145802A1 (de) * 1981-11-19 1983-05-26 Wolfgang 2210 Itzehoe Priesemuth Schaltkontkatanordnung und verfahren zu ihrer herstellung
DE8219038U1 (de) * 1982-07-02 1982-10-07 Siemens AG, 1000 Berlin und 8000 München Elektrischer Schleifkontakt für Leiterbahnen
DE3515911A1 (de) * 1985-05-03 1986-11-06 SWF Auto-Electric GmbH, 7120 Bietigheim-Bissingen Elektrischer schalter, insbesondere lenkstockschalter fuer kraftfahrzeuge
DE3607181A1 (de) * 1986-03-05 1987-09-10 Preh Elektro Feinmechanik Schalteranordnung
DE8605995U1 (de) * 1986-03-05 1987-07-02 Preh-Werke GmbH & Co. KG, 97616 Bad Neustadt Schaltkontaktanordnung
FR2601495A1 (fr) * 1986-07-11 1988-01-15 Jaeger Perfectionnements aux commutateurs electriques comportant des plots de contact frottants
DE3737907A1 (de) * 1987-06-27 1989-01-05 Swf Auto Electric Gmbh Elektrischer schalter, insbesondere lenkstockschalter fuer kraftfahrzeuge
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DK163391C (da) * 1988-01-28 1992-08-03 Mec As Fremgangsmaade til fremstilling af en tryktastomkobler og en saadan tryktastomkobler

Also Published As

Publication number Publication date
WO1992000597A1 (fr) 1992-01-09
DE4020821A1 (de) 1992-01-02
ES2110443T3 (es) 1998-02-16
JPH05501478A (ja) 1993-03-18
DE4020821C2 (de) 2001-08-02
EP0494278A1 (fr) 1992-07-15
BR9105803A (pt) 1992-09-22

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