EP0577521B1 - Commutateur à galette pour poste émetteur-récepteur radioélectrique - Google Patents
Commutateur à galette pour poste émetteur-récepteur radioélectrique Download PDFInfo
- Publication number
- EP0577521B1 EP0577521B1 EP19930401728 EP93401728A EP0577521B1 EP 0577521 B1 EP0577521 B1 EP 0577521B1 EP 19930401728 EP19930401728 EP 19930401728 EP 93401728 A EP93401728 A EP 93401728A EP 0577521 B1 EP0577521 B1 EP 0577521B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- switch
- ring
- wafer
- contact
- discontinuities
- 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
- H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
- H01H19/54—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand the operating part having at least five or an unspecified number of operative positions
- H01H19/56—Angularly-movable actuating part carrying contacts, e.g. drum switch
- H01H19/58—Angularly-movable actuating part carrying contacts, e.g. drum switch having only axial contact pressure, e.g. disc switch, wafer switch
- H01H19/585—Angularly-movable actuating part carrying contacts, e.g. drum switch having only axial contact pressure, e.g. disc switch, wafer switch provided with printed circuit contacts
Definitions
- the present invention relates to a slider switch for radio transceiver station in accordance with the preamble of claim 1.
- a slider switch for radio transceiver station in accordance with the preamble of claim 1.
- Such a switch is known from document US-A-3 935 568.
- This mode of operation by scanning for the operation of a radio transceiver station has mainly drawbacks related to interference and operating autonomy problems of the post.
- the keyboard-switch assembly comprises two matrices: one keyboard matrix and a switch matrix. Each matrix is formed rows and columns. The columns of each matrix are respectively linked to a parity generator which detects any change appearing on the columns. Any change of state of these cause an interruption.
- An interruption is in particular caused at each address of a matrix corresponding to a zero crossing of a column and is translated by a pulse at the output of the parity generator. You have to invalidate these interruptions, which creates a gray area where any action of the operator on the operating organs corresponding to the matrix is ignored.
- the duration of this zone is directly related to the speed of the reading algorithm. If a switch changes state during this zone there will be no interruption at the microprocessor level and the reading in progress will be considered good despite not reflecting the actual position of the switch.
- the object of the invention is to overcome this drawback.
- the invention relates to a switch comprising at minus a wafer centered and fixed around an axis of which at least one of its sides has a conductive area and an insulating area for define an electrical conductor in the form of concentric rings, comprising at least a first crown and a second crown, having discontinuities defined by a transition between the area conductive and the insulating zone and vice versa, the discontinuities of crowns other than the first crown corresponding to a change status of the switch, and comprising at least one fixed fixed part mechanically and electrically to the slab to allow to impose a logic state determined at the conductive area of the wafer and equipped with a first contact in connection with the first crown and a second contact in connection with the second crown giving the state of the switch corresponding to a stable position of the axis of the switch, characterized in what each of the discontinuities of the crowns other than the first crown is between two successive discontinuities of the first crown and in that each of the discontinuities of the first crown allows to generate, through the first contact in
- FIG. 1 represents a top view of part of a switch according to the invention representing one of the faces of a wafer 1 centered and fixed around an axis 2 corresponding to the axis of the switch.
- Axis 2 is activated for each change of switch state, each change of position of the switch corresponding to a change of state of the switch.
- the fixed part of the switch is not shown, only contacts metal fixed to the fixed part are symbolized by a point.
- the cake 1 is produced in the example of the figure by a printed circuit.
- the wafer 1 has two distinct areas: a conductive area 5 corresponding to the metallization of the printed circuit represented in the figure by a hatched area, for example a copper metallization, and an insulating zone 6 corresponding to the non-substrate metallized, for example epoxy glass.
- each crown corresponds to a known type printed circuit track having a circular shape.
- Each crown is electrically connected to the others to form a single conductive area 5.
- To each track thus formed corresponds a contact the fixed part of the switch.
- Contact is contact flexible metal, for example a metal blade, one of the ends is integral with the fixed part and the other free end of which is shaped to allow flexible contact on the surface of the wafer 1.
- the mechanical connection of the contact with wafer 1 is ensured permanently due to the elasticity of the blade thus ensuring contact by friction on the surface of the wafer 1.
- the tracks whose width is determined based on the type of contact used can form a continuous or discontinuous crown.
- track 7 corresponding to contact C is continuous and wide constant.
- Contact C supplies the conductive area 5 of the wafer 1 and thus imposes a determined logic state on the metal contacts when they are in contact with the conductive area 5 of the wafer 1.
- the blades in contact with insulating zone 6 are in a complementary logic state possibly imposed by pull resistors not represented polarized by an electric voltage applied to one of their ends and connected respectively by their other end to contact blades.
- the four contacts symbolized by the letters A, B, D and E, give the state of the switch according to their respective position at the surface of the wafer 1 for each change of position 4i stable of axis 2 of the switch.
- each stable 4i position is symbolized by a radius represented by dotted.
- the angle separating each stable position 4i is therefore 36 °.
- each position 4i of the switch corresponds a code to four digits.
- a track 8 corresponding to contact F in this example is a crenellated track regularly. Each 9i slot is centered on one position stable 4i of axis 2 of the switch.
- An electrical discontinuity 10i is present for each passage of contact F of a conductive zone 5 to an insulating zone 6 and vice versa, either at the passage of the runway metallized to the substrate and vice versa.
- a command is generated and transmitted via the finger F to an information management unit, not represented, by example a microprocessor, allowing the reading of the present code.
- an information management unit not represented, by example a microprocessor, allowing the reading of the present code.
- the other tracks 11i corresponding to contacts A, B, D and E have discontinuities 12i of the same nature as the discontinuities 10i of track 8 corresponding to contact F.
- discontinuities 12i determine a change of state of the switch, and are advantageously positioned at the center of the angle formed by two positions stable 4i of axis 2 of the switch either in the figure, in the middle of two successive slots 9i of track 8 corresponding to contact F. From this done, we overcome mechanical manufacturing tolerances by avoiding that contacts A, B, D and E only overlap the two zones 5 and 6 for the same stable position 4i.
- the particular structure given to track 8 in the form of symmetrical slots 9i also allows the switch operation in both directions of rotation.
- the contact C allows the selection of a or several switches with or without supplying the conductive zone 5 of the wafers 1 of the switches.
- the cake 1 can be realized in double-sided printed circuits. Each side of the cake 1 receives metal contacts integral with the same fixed part, this which gives for a stable position 4i of the axis of the switch two separate codes for a single switch.
- the invention is not limited to the example precisely described.
- the position and the number of the contacts can be different.
- the conductive zone and the insulating zone can be produced in other material and be represented differently as well as discontinuities. All types of metal contacts ensuring a mechanical connection and electric with the face (s) of the cake fits into the frame of the present invention.
- the number of stable positions can vary depending on the application.
Landscapes
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
- Input From Keyboards Or The Like (AREA)
Description
Claims (5)
- Commutateur comportant au moins une galette (1) centrée et fixée autour d'un axe (2) dont au moins une de ses faces comporte une zone conductrice (5) et une zone isolante (6) permettant de définir un conducteur électrique en forme de couronnes concentriques, comprenant au moins une première couronne (8) et une deuxième couronne (11i), présentant des discontinuités définies par une transition entre la zone conductrice (5) et la zone isolante (6) et inversement, les discontinuités (12i) des couronnes (11i) autres que la première couronne (8) correspondant à un changement d'état du commutateur, et comportant au moins une partie fixe liée mécaniquement et électriquement à la galette (1) pour permettre d'imposer un état logique déterminé à la zone conductrice (5) de la galette (1) et équipée d'un premier contact (F) en liaison avec la première couronne (8) et d'un deuxième contact (A, B, D, E) en liaison avec la deuxième couronne (11i) donnant l'état du commutateur correspondant à une position stable (4i) de l'axe (2) du commutateur, caractérisé en ce que chacune des discontinuités (12i) des couronnes (11i) autres que la première couronne (8) est comprise entre deux discontinuités (10i) successives de la première couronne (8) et en ce que chacune des discontinuités (10i) de la première couronne (8) permet de générer, par l'intermédiaire du premier contact (F) en liaison avec la première couronne (8), une commande permettant de déclencher la lecture d'un état stable déterminé du commutateur après chaque changement de position stable (4i) de l'axe (2) du commutateur.
- Commutateur selon la revendication 1, caractérisé en ce que la galette (1) est réalisée en circuit imprimé, la zone conductrice (5) étant constituée par une métallisation partielle d'au moins une des faces de la galette (1) et la zone isolante (6) étant constituée par le substrat du circuit imprimé.
- Commutateur selon la revendication 1, caractérisé en ce que chaque contact (A à F) métallique de la partie fixe est aligné sur une même droite (3) passant par le centre de la galette (1) et est tangent respectivement à sa couronne respective suivant l'axe médian de la couronne.
- Commutateur selon la revendication 3, caractérisé en ce que chaque contact (A à F) métallique comporte une lame dont une extrémité est façonnée pour assurer un contact souple et permanent avec au moins une des faces de la galette (1) et dont l'autre extrémité est solidaire de la partie fixe du commutateur.
- Commutateur selon l'une quelconque des revendications 1 à 4 caractérisé en ce que les couronnes sont reliées électriquement les unes aux autres pour former une même zone conductrice (5).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9208211 | 1992-07-03 | ||
FR9208211A FR2693332B1 (fr) | 1992-07-03 | 1992-07-03 | Commutateur a galette pour poste emetteur-recepteur radioelectrique. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0577521A1 EP0577521A1 (fr) | 1994-01-05 |
EP0577521B1 true EP0577521B1 (fr) | 1998-03-04 |
Family
ID=9431498
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19930401728 Expired - Lifetime EP0577521B1 (fr) | 1992-07-03 | 1993-07-02 | Commutateur à galette pour poste émetteur-récepteur radioélectrique |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0577521B1 (fr) |
DE (1) | DE69317167T2 (fr) |
FR (1) | FR2693332B1 (fr) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1640092A1 (de) * | 1967-06-24 | 1970-05-21 | Lehner Fernsprech Signal | Rundsteuerempfaenger einer nach dem Impuls-Auswahlverfahren arbeitenden Fernschaltanlage |
JPS4833202U (fr) * | 1971-08-25 | 1973-04-21 | ||
US3935568A (en) * | 1971-11-24 | 1976-01-27 | Lem Instrument Corporation | Universal analog-to-digital converter using the same information disc for different output codes |
GB8607367D0 (en) * | 1986-03-25 | 1986-04-30 | Roneo Alcatel Ltd | Position sensor |
US4758693A (en) * | 1987-10-01 | 1988-07-19 | Amp Incorporated | Encoding substrate for rotary switch assembly |
IT8983431A0 (it) * | 1989-06-21 | 1989-06-21 | Eaton Controls Spa | Circuito stampato a connessioni circonferenziali. |
-
1992
- 1992-07-03 FR FR9208211A patent/FR2693332B1/fr not_active Expired - Fee Related
-
1993
- 1993-07-02 DE DE1993617167 patent/DE69317167T2/de not_active Expired - Fee Related
- 1993-07-02 EP EP19930401728 patent/EP0577521B1/fr not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE69317167D1 (de) | 1998-04-09 |
DE69317167T2 (de) | 1998-07-09 |
EP0577521A1 (fr) | 1994-01-05 |
FR2693332A1 (fr) | 1994-01-07 |
FR2693332B1 (fr) | 1994-08-05 |
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