EP0005217A1 - Interrupteur coulissant et/ou rotatif pour cartes à une ou plusieurs couches - Google Patents

Interrupteur coulissant et/ou rotatif pour cartes à une ou plusieurs couches Download PDF

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Publication number
EP0005217A1
EP0005217A1 EP79101193A EP79101193A EP0005217A1 EP 0005217 A1 EP0005217 A1 EP 0005217A1 EP 79101193 A EP79101193 A EP 79101193A EP 79101193 A EP79101193 A EP 79101193A EP 0005217 A1 EP0005217 A1 EP 0005217A1
Authority
EP
European Patent Office
Prior art keywords
contact
switch
roller
switch according
switching
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Withdrawn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
EP79101193A
Other languages
German (de)
English (en)
Inventor
Manfred Dipl.-Ing. Koslar
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.)
Siemens AG
Original Assignee
Siemens AG
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
Priority claimed from DE19792909585 external-priority patent/DE2909585C2/de
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP0005217A1 publication Critical patent/EP0005217A1/fr
Withdrawn legal-status Critical Current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
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
    • H01H1/242—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting the contact forming a part of a coil spring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/02—Contacts characterised by the material thereof
    • H01H1/021—Composite material
    • H01H1/029—Composite material comprising conducting material dispersed in an elastic support or binding material
    • 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
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/16—Contacts characterised by the manner in which co-operating contacts engage by abutting by rolling; by wrapping; Roller or ball contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H15/00—Switches having rectilinearly-movable operating part or parts adapted for actuation in opposite directions, e.g. slide switch
    • H01H15/02—Details
    • H01H15/06—Movable parts; Contacts mounted thereon

Definitions

  • the invention relates to a rotary and / or slide switch for single and multi-layer cards with at least one rolling on a contact track, provided in switch positions of the switch as a contact bridge for connecting at least two surface contacts arranged transversely to the direction of the contact track, resiliently pressed against the contact tracks Contact roller.
  • Switches for single-layer and multi-layer circuit cards with contact elements in switching brackets located on latching slides are known, in which the contact surfaces are pressed together, which is often achieved with tongues or cams similar to leaf springs.
  • a switch should therefore be created that takes up minimal space and whose contact surfaces have a long service life due to low frictional forces.
  • Such a switch should, on the one hand, be absolutely reliable and, on the other hand, be inexpensive in mass production in a simple modular design. A slight variability should also be taken into account.
  • switches of various designs must be possible according to the same principle and the same design. Slide switches and corresponding rotary switches should also be able to be produced.
  • the switching drums are made of copper.
  • a correspondingly reduced switch for example for the optional connection of a printed circuit on an iso- Lierstoffplatte arranged contact surfaces, which are arranged along a contact path according to a desired switching program, but there may be malfunctions in the contact by the shift drum, especially if several such rollers are rotatably arranged side by side on a common axis, because the contact roller due to its rigidity rests on a slightly raised contact surface section and therefore cannot at the same time touch a somewhat lower contact surface.
  • contact interruptions can also occur if the switch is exposed to disturbances or vibrations.
  • the switch of the type specified at the outset is characterized according to the invention in that the contact roller is designed as a rolling contact in such a way that it rolls resiliently on the contact surfaces of the circuit card to form a flat contact in the resilient rolling principle.
  • the switching brackets are arranged so as to be rotatable about a switch axis, which means that the invention is also applied to rotary switches.
  • the switch is multi-layer and the switching bracket is comb-shaped. In this way, up to twenty circuit card levels can be easily combined.
  • the further, preferred solution to the object results from the fact that in the switch the contact roller, at least in sections, at least in the area of its outer cylinder surface, while maintaining its elastic compressibility by adding conductive particles (metal dust) made of rubber or plastic.
  • an elastically flexible shift drum is advantageously obtained, which can compensate for minor unevenness in the course of the contact path due to tolerances, and which does not line up or contact these contact surfaces in the course of establishing an electrical connection between two adjacent contact surfaces, as is the case with a rigid roller would. but forms two-dimensional contact transition points, in particular due to the static friction between the rubber-elastic layer of the contact roller and the contact track in the event of vibrations, no lateral displacements of the contact roller can occur and the roller cannot lift off from a contact surface of the contact track in an undesirable manner.
  • the contact roller can also be moved very quickly (high-speed switch) without undesired contact interruptions.
  • the contact roller does not perform any grinding movements on the contact surfaces of the contact track, like the sliding contacts of conventional contact bridges, but a flexing movement, so that despite good contact cleaning, there is no fear of wear shortening the life of the switch.
  • the contact rollers of such a switch can e.g. advantageously be produced by spraying a rubber-elastic conductive layer onto a tube consisting of poly-tetrafluoroethylene and then separating the rollers in the desired width from the tube.
  • the contact rollers can be stacked at a desired distance on a switch axis with the interposition of disks made of poly-tetrafluoroethylene, so that a switch can be assembled in a modular manner from relatively few parts according to the respective circumstances.
  • the contact roller has an inner roller body made of poly-tetrafluoroethylene or another insulating material, which is lifted onto a rigid axis by means of a concentric bore, and that the rubber or plastic layer utilizes its elastic extensibility as a guide ring is clamped on the inner roller body.
  • This design of the contact roller on the one hand insulates the conductive layer of the roller from elastic rubber from the switch axis and on the other hand ensures a particularly low-friction mounting of the contact roller on the axis by using poly-tetrafluoroethylene for the inner roller body, with the elasticity of the rubber layer making it easy Attachment of this layer on the inner roller body is advantageously used.
  • a plurality of contact rollers are arranged next to one another on an axis and that the contacts are fixed surface areas on an insulating plate in the manner of a printed circuit, that the insulating plate is provided on both sides with contacts, that at least on both sides of the insulating plate One switch axis equipped with contact rollers is provided and that the contact rollers are pressed against the insulating material plate by the spring means bracing against each other.
  • This configuration of the switch advantageously makes it possible to implement relatively extensive switching programs, it being irrelevant, for example, whether the switch axes, each equipped with a plurality of contact rollers, are moved or whether the insulating material plate provided with the flat contacts on its two large surfaces moves between the contact rollers becomes.
  • the contact rollers i.e. a e.g. strip-shaped insulating plate
  • the switch is insensitive to fluctuations in thickness of the insulating plate due to the elasticity of the rollers and the spring means.
  • each of the two axes has ends in each case directed towards the insulating plate and open towards it.
  • each of a frame-like, at least to the insulating plate open contact roller housing is mounted and that the contact roller housing by at least one transverse to the direction of the contact path, the two Ge housing and a located between them, extending in the direction of the contact strip of insulating plate strips together, resiliently stretchable retaining ring, which wraps around the two contact roller housings together, and presses them with the contact rollers arranged in them against the insulating plate and thus the two contact tracks.
  • a guide is advantageously formed for the space-savingly connected contact roller housings, which enables the contact roller housings to elastically fluctuate in thickness of the insulating material plate and unevenly at right angles to the insulating material plate and thus to the contact paths provided on it units of the contact track, while the contact roller housings are guided exactly across the course of the contact track and therefore an exactly reproducible assignment between a switching position and a certain position of the actuating body is ensured.
  • the locking slide 1 are formed in the form of a slide rail. They have the switch button 4 on the outside, while the switch bracket guides 2 and next to them on the inside the locking cams 3 are each arranged in pairs corresponding.
  • the switching bracket guides 2 have round recesses, between which the side stub axles 6 of the switching bracket 5 containing the contact elements are inserted, with a small distance from the inside of the locking slide 1, so that the switching bracket 5 remains very limited movement. This allows the switching bracket 5 to follow any angular position of a switching card 15 in a certain range. It is also achieved that the contact pressure on the contact surfaces of the circuit card 15 is independent of the geometric tolerances when installing the switching elements.
  • the contact pressure is distributed evenly over the entire surface of the switching card 15 due to the limited mobility of the switching bracket 5.
  • the switching bracket 5 attached in the switching bracket guides 2 is U-shaped and thus forms a guide slot 7 towards the locking slide 1, which is used to receive the Circuit cards.
  • the contact elements are located in cylindrical recesses 8 on both sides, each of which has a guide groove 9 for positioning the contact elements.
  • the U-shaped switching bracket 5 is thus mounted at its open end with its side stub axles 6 to a limited extent in the switching bracket guides 2 of the locking slide 1 and has on its inside the contact elements in the guide slot 7 for the switching card 15. These contact elements must, of course, be inserted into the movement-limited mounting in the switching bracket legs before the switching bracket 5 is attached, since they are then delimited on both sides.
  • the contact elements as such preferably consist of rotatably mounted roller springs 10. However, it is also possible, if appropriate, to switch to thin, elastic tubes 16. Both rotating mobility and a certain elasticity are decisive for these mutually isolated contact elements. It has proven to be advantageous to design the rolling spring elements from spiral springs in order to achieve independent multi-point contact of the live parts, which increases the switching reliability.
  • the contact pressure is generated by the slight deformation of the roller springs 10 in the radial direction. If the switching bracket 5 and the switching card 15 are double-sided, the contact pressure for the upper and lower elements is also the same, since the switching card 15 is suspended from the legs of the switching bracket 5 as it were.
  • the contact pressure is determined exclusively by the difference in the circuit board thickness and the free space between the roller springs 10 of the upper and lower part and the resulting roller spring travel. Since the rolling parts can roll on the contact elements if the design is correct, the wear on the contact surfaces is relatively low, and in addition the contacting takes place statically in different positions, so that not only one and the same point determines the contact resistance, as before, but results according to the invention Always new contact points on the surfaces of the roller springs 10.
  • Essential to the invention is therefore particularly the arrangement of one roller spring 10 on each of a spacer 11, and then the sequence of such roller spring spacer units to any number Combinations containing such units, for this purpose the spacer plungers 11 have a push-on extension 1 at the front and a rear recess 14 at the rear.
  • the respective push-on extension 12 of a spacer plunger 11 fits into the rear recess 14 of the preceding spacer plunger 11.
  • the middle part of the spacer plunger 11 is insulated and at To maintain their rotatability, a roller spring 10 is arranged, in addition, each spacing plunger 11 has a thicker cylindrical part which fits precisely into the cylindrical recesses 8 on the inside of the legs of the switching bracket 5, with a corresponding positioning also by.
  • the mounted switch is then actuated in a known manner.
  • switches according to the invention can be both slide switches and optionally rotary switches.
  • the circuit card 15 can be contacted both on one side and on both sides - above and below.
  • the U-shaped design of the switching bracket 5 allows this. Without anything changing in the arrangement in the switching bracket legs, a switching bracket 5 for multi-layer circuit cards will have to be designed in a comb-like manner. A corresponding design of the locking slide 1 results automatically in such a case.
  • the switch according to the invention takes up a minimum of space and has a maximum service life in terms of its contact design due to minimal frictional forces. Since the contact elements consist of a staggered axis formed from module elements, namely from individual spacing plungers 11, any combination of contact arrangements and the overall production are possible as an inexpensive mass part.
  • the assembly of the switch itself does not require riveting, flanging or screwing.
  • contact rollers 103 are provided in the switch for connecting contact surfaces 102 fixed on an insulating material plate 101 in the manner of a printed circuit.
  • the contact rollers 103 are on a switch axis 104; e.g. consists of steel, rotatably mounted and are made of an inner roller body 105, which consists of poly-tetrafluoroethylene and has a bore 106 for receiving the switch axis 104, and a guide ring 107, which consists of a silicone rubber-silver dust mixture and uses its elastic Stretchability is stretched on the inner roller body 105, assembled.
  • the inner roller body 105 is provided in the manner of a spool of thread with edge beads 108, which prevent the guide ring 107 from sliding off the inner roller body 105 and that when the contact rollers 103 are arranged closely next to one another on the switch axis 104, adjacent guide rings 107 touch one another while producing an undesired electrical contact can.
  • the outer surface of the guide ring 107 is dimensioned such that at least one of the contact rollers 103 of the switch in a switch position of the switch touch two contact surfaces 102, which are arranged next to one another on the insulating plate 101 transversely to the course of the contact path.
  • the guide ring 107 which is elastically expandable and compressible at the same time as a result of its choice of material, therefore forms a switch contact bridge which, when rolled on the contact track in certain positions, establishes a conductive connection between at least two contact surfaces 102 of the contact tracks. So-called intermittent switching can be realized by appropriate distances between the contact surfaces 102 in the direction of the contact path. In the first case be. agitates a contact roller during the transition from one contact surface to the next in the direction of the contact path of uncovered surface areas of the insulating plate 101, while in the second case the contact roller contacts a contact surface 102 of the contact path in any position.
  • the switch axes 104 equipped with contact rollers are mounted in contact roller housings 109.
  • Each contact roller housing 109 consists essentially of a rectangular frame which has on its narrow sides a slot 110 which is directed towards the insulating material plate 101 and is open towards it.
  • the switch axis 104 is pressed with its two ends into the two aligned slots 110 of a contact roller housing 109. When the axis ends are pressed in, constrictions formed by corresponding projections must be overcome within the slots 110, so that the axis can no longer fall out. If the Axis 104 is fastened in the contact roller housing 109, then the contact rollers seated on the axis are located within the space 111 enclosed by the frame-shaped contact roller housing 109. By pushing on inner roller bodies 105, which are not provided with a guide ring 107, the contact rollers 103 can be precise are held in their intended position on axis 104.
  • two contact roller housings 109 provided on the sides of the insulating material plate 101 facing away from each other are formed by two annularly closed spiral springs 112, which are transverse to the direction of the contact path, in each case near the end faces 113 and parallel to these both Wrap around the contact roller housing 109 and an insulating material plate strip 101 located between them, and are held by the end faces 113 near guide grooves 114 of the contact roller housing 109, pressed against the insulating material plate 101 and thus against the contact track or contact tracks provided thereon.
  • An actuating body 115 is provided for moving the contact roller housing along the contact path.
  • the actuating body 115 (FIGS.
  • a longitudinal slot 116 which is incorporated, for example, into a housing wall 117, and has two guide walls 118 directed transversely to the contact track.
  • the distance of the guide walls 118 of the actuating body 115 from one another is dimensioned such that the end faces 113 of the contact roller housing 109 fit exactly between the mutually facing surfaces of the guide walls 118.
  • the guide walls 118 of the actuating body are parallel to the insulating material plate 101 interrupted by a separating slot 119, which is provided for receiving the insulating material plate 101.
  • Each of the halves of the guide walls 118 of the actuating body 115 formed by the separating slot 119 is provided with a recess 120 which is open towards the insulating material plate 101 and which is matched to approaches 121 of the contact roller housing 109 which are approximately square in cross section.
  • the lugs 121 protrude at right angles from the end faces 113 on both sides of the contact roller housing 109 and are snapped into place, with the halves of the guide walls 118 *.
  • the guide walls 118 of the actuating body 115 only touch the lugs 121 on the sides of the lugs oriented at right angles to the insulating material plate 101 121.
  • the contact roller housing 109 can assume its position perpendicular to the insulating plate 101 independently of the actuating body 155, while the position of the contact roller housing 109 in the direction of the contact path is determined by the position of the actuating body 115 and the actuating body 115 with the aid of its guide walls 118 keeps the contact roller housing 109 aligned exactly at right angles to the course of the contact path.
  • resilient latching arms 122 are provided on the actuating body 115, which have wedge-shaped lugs 123.
  • the lugs 123 engage in the switch positions of the switch in depressions which are incorporated in a housing, not shown here.
  • the mode of operation of the contact roller 103 is in the recesses 120 of the guide walls 118 the guide ring 107.
  • the guide ring 107 establishes an electrical connection between the contact surfaces 102 of a printed circuit transverse to the rolling direction 124.
  • the guide ring 107 (see FIG. 11) is elastically deformed by the contact pressure and in this way forms planar contacts 125 with the contact surfaces 102 of the printed circuit board 101.
  • the contact tracks do not need to run in a straight line on one level, they can also be arranged on the inside and / or outside surface of a cylinder body or in a circle on a level, so that it is then a rotary switch.

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  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Materials Engineering (AREA)
  • Push-Button Switches (AREA)
EP79101193A 1978-04-22 1979-04-19 Interrupteur coulissant et/ou rotatif pour cartes à une ou plusieurs couches Withdrawn EP0005217A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE2817744 1978-04-22
DE2817744 1978-04-22
DE2909585 1979-03-12
DE19792909585 DE2909585C2 (de) 1979-03-12 1979-03-12 Schiebeschalter

Publications (1)

Publication Number Publication Date
EP0005217A1 true EP0005217A1 (fr) 1979-11-14

Family

ID=25774329

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79101193A Withdrawn EP0005217A1 (fr) 1978-04-22 1979-04-19 Interrupteur coulissant et/ou rotatif pour cartes à une ou plusieurs couches

Country Status (1)

Country Link
EP (1) EP0005217A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3223641A1 (de) * 1982-06-24 1983-12-29 Bsg Schalttechnik Gmbh & Co Kg, 7460 Balingen Potentiometer/schalter-kombination
EP0408840A2 (fr) * 1989-07-20 1991-01-23 Merit-Elektrik GmbH Commutateur multiple particulièrement fermé-ouvert- et/ou commutateur pour vÀ©hicules à moteur et des applications semblables
WO1998054740A1 (fr) * 1997-05-30 1998-12-03 Ut Automotive Dearborn, Inc. Mecanisme de contact pour commutateur
EP0938760A1 (fr) * 1997-08-20 1999-09-01 Electro Scientific Industries, Inc. Contacteur electrique a roulettes
WO2004023281A2 (fr) * 2002-09-09 2004-03-18 Gerhardus Johannes Breukink Dispositif d'entree de donnees dans un appareil numerique
WO2007012293A1 (fr) * 2005-07-29 2007-02-01 Yuan Li Commutateur electrique de type rouleau

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR592873A (fr) * 1924-04-16 1925-08-11 Alsacienne Constr Meca Galet de contact électrique
FR1065579A (fr) * 1952-07-23 1954-05-26 Csf Perfectionnements aux éléments de contact pour commutateurs mécaniques
BE707191A (fr) * 1967-11-28 1968-05-28
US3487179A (en) * 1967-01-04 1969-12-30 Peter Meier Rotary switch
FR2008453A1 (fr) * 1968-05-14 1970-01-23 Stackpole Carbon Co
US3534194A (en) * 1968-03-06 1970-10-13 Jack B Speller Low noise electrical contact apparatus
DE1690181A1 (de) * 1967-07-21 1971-05-06 Schlumberger Overseas Rollenkontakt-Umschalter,insbesondere fuer gedruckte Schaltungsplatte
US3624570A (en) * 1970-04-02 1971-11-30 Lory Electronics Inc Electromechanical relay
US3858021A (en) * 1973-03-01 1974-12-31 Western Electric Co Electrical switching device having self-cleaning contactor elements
US3889131A (en) * 1973-10-29 1975-06-10 Jack B Speller Long life reliable relay
US4132873A (en) * 1977-03-16 1979-01-02 General Time Corporation Multiposition switch

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR592873A (fr) * 1924-04-16 1925-08-11 Alsacienne Constr Meca Galet de contact électrique
FR1065579A (fr) * 1952-07-23 1954-05-26 Csf Perfectionnements aux éléments de contact pour commutateurs mécaniques
US3487179A (en) * 1967-01-04 1969-12-30 Peter Meier Rotary switch
DE1690181A1 (de) * 1967-07-21 1971-05-06 Schlumberger Overseas Rollenkontakt-Umschalter,insbesondere fuer gedruckte Schaltungsplatte
BE707191A (fr) * 1967-11-28 1968-05-28
US3534194A (en) * 1968-03-06 1970-10-13 Jack B Speller Low noise electrical contact apparatus
FR2008453A1 (fr) * 1968-05-14 1970-01-23 Stackpole Carbon Co
US3624570A (en) * 1970-04-02 1971-11-30 Lory Electronics Inc Electromechanical relay
US3858021A (en) * 1973-03-01 1974-12-31 Western Electric Co Electrical switching device having self-cleaning contactor elements
US3889131A (en) * 1973-10-29 1975-06-10 Jack B Speller Long life reliable relay
US4132873A (en) * 1977-03-16 1979-01-02 General Time Corporation Multiposition switch

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3223641A1 (de) * 1982-06-24 1983-12-29 Bsg Schalttechnik Gmbh & Co Kg, 7460 Balingen Potentiometer/schalter-kombination
EP0408840A2 (fr) * 1989-07-20 1991-01-23 Merit-Elektrik GmbH Commutateur multiple particulièrement fermé-ouvert- et/ou commutateur pour vÀ©hicules à moteur et des applications semblables
EP0408840A3 (en) * 1989-07-20 1991-10-23 Merit-Elektrik Gmbh Multiple switch, particularly on-off- and/or change-over switch for motor vehicles and similar applications
AU627342B2 (en) * 1989-07-20 1992-08-20 Merit-Elektrik Gmbh Multiple switch
WO1998054740A1 (fr) * 1997-05-30 1998-12-03 Ut Automotive Dearborn, Inc. Mecanisme de contact pour commutateur
EP0938760A1 (fr) * 1997-08-20 1999-09-01 Electro Scientific Industries, Inc. Contacteur electrique a roulettes
EP0938760A4 (fr) * 1997-08-20 2001-01-03 Electro Scient Ind Inc Contacteur electrique a roulettes
WO2004023281A2 (fr) * 2002-09-09 2004-03-18 Gerhardus Johannes Breukink Dispositif d'entree de donnees dans un appareil numerique
WO2004023281A3 (fr) * 2002-09-09 2004-05-13 Gerhardus Johannes Breukink Dispositif d'entree de donnees dans un appareil numerique
WO2007012293A1 (fr) * 2005-07-29 2007-02-01 Yuan Li Commutateur electrique de type rouleau

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Inventor name: KOSLAR, MANFRED, DIPL.-ING.