EP0088014A1 - Commutateur électrique rotatif - Google Patents

Commutateur électrique rotatif Download PDF

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Publication number
EP0088014A1
EP0088014A1 EP83400373A EP83400373A EP0088014A1 EP 0088014 A1 EP0088014 A1 EP 0088014A1 EP 83400373 A EP83400373 A EP 83400373A EP 83400373 A EP83400373 A EP 83400373A EP 0088014 A1 EP0088014 A1 EP 0088014A1
Authority
EP
European Patent Office
Prior art keywords
stators
rotor
stator
contact
rotation
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Withdrawn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
EP83400373A
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German (de)
English (en)
French (fr)
Inventor
Marcel Henri Deltoer
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0088014A1 publication Critical patent/EP0088014A1/fr
Withdrawn legal-status Critical Current

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    • 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
    • H01H19/64—Encased switches adapted for ganged operation when assembled in a line with identical switches, e.g. stacked switches
    • 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

Definitions

  • the present invention relates to rotary switches and more precisely those of the type which comprises a rotor and annular stators substantially concentric to the axis of rotation of the rotor and provided with fixed contact pads, pads of two stators being mutually aligned in parallel direction to the axis of rotation, and the rotor of which is provided with contact blades which it resiliently supports and which are intended to successively connect aligned pads of two stators during the rotation of the rotor. All the studs of the same stator are substantially at the same radial distance from the axis of rotation.
  • rotary switches of the aforementioned type all the pads of each stator are connected to the same terminal or on the contrary different pads are connected, in groups or separately, to different terminals. Depending on the position of the rotor around its axis of rotation, the blades ensure the connection of aligned pads of stators.
  • the rotor usually comprises several contact strips and these, for certain positions of the rotor, may be in contact only with a stud of a single stator or even with no stud.
  • French Patent No. 1,398,866 describes such a rotary switch in which the rotor carrying the contact blades rotates in a housing delimited between two stator rings.
  • Rotary switches of the aforementioned type allow great flexibility in the control of devices and in particular they allow the implementation of numerous combinations of signals according to very diverse Boolean algebra functions.
  • switches are made in as small a form as possible so that they can be mounted in electrical devices with as little space as possible. Switches are therefore used, the diameter of which is approximately 25 mm and the rotor of which has 10 or 12 rotational positions, therefore 10 or 12 possibilities of alignment of pairs of stator pads.
  • the invention relates to a rotary switch of the type described above but which makes it possible to obtain a greater number of signal combinations, therefore a greater number of algebraic Boolean functions, by association of at least three stators with a single rotor.
  • the realization of such a switch poses complex problems. Indeed, it is possible to envisage using two sets of strips, one intended to ensure the connection of the pads of the central stator and of an external stator and the other the connection of the pads of the central stator and of the other stator external. This arrangement then requires a double rotor and has all the disadvantages of stacking two separate rotary switches, with a lower capacity, however.
  • the rotary switch has only one rotor, carrying a single series of blades.
  • the rotary switch according to the invention comprises a rotor and annular stators substantially concentric with the axis of rotation and provided with contact pads aligned mutually in direction parallel to the axis of rotation, so that the contact strips resiliently supported by the rotor can successively connect the aligned pads of the stators during the rotation of the rotor, all the pads of the same stator being substantially at the same distance radial of the axis of rotation.
  • the switch comprises three annular stators, and the rotor comprises only one series of contact strips placed at its periphery, this series comprising on the one hand at least one strip whose axial dimension is sufficiently small to that it can only connect the pads of two adjacent stators, and on the other hand at least one strip whose axial dimension is large enough so that it can connect the pads of two non-adjacent stators.
  • lamellae whose axial dimension is sufficiently large can come elastically into contact with a stud of the stator placed between the other two when one of these two other stators has no stud and the someone else has one.
  • the switch has abutment surfaces intended to prevent the lamellae whose axial dimension is sufficiently large from being able to come elastically into contact with a stator pad disposed between the two others, when one of these two other stators have no stud while the other has one.
  • the abutment surfaces are advantageously formed on the one hand on at least one strip and on the other hand on abutment rings arranged on either side of the rotor. These stop rings are advantageously formed from a material having a low coefficient of friction so that the rotor easily turns in contact with them.
  • the studs of at least one of the stators other than the central stator are closer to the axis of rotation than the studs of the central stator.
  • the stators have studs which are all practically at the same radial distance from the axis, and the lamellae whose axial dimension is sufficiently large have an inwardly curved shape so that they can be in contact with the two external stators without being in contact with the central stator.
  • Each stator advantageously includes a crown of plastic material supporting the studs, and the rings are stackable, two of the rings defining a housing intended to contain the stop rings and the peripheral part of the rotor.
  • the stators prefferably form crowns stackable on top of each other and comprising positioning devices, a suitable holding device retaining the crowns forming the stators in their stacked arrangement.
  • the rotary switch according to the invention can also include a larger number of stators, the studs of which can be connected by strips carried by a single rotor having a single series of strips whose axial dimensions are different.
  • the rotary switch 10 comprises a stack of elements, one of which extends beyond a control axis 12 carrying a maneuvering button 14.
  • the stack of elements successively comprises a first substantially cylindrical body 16 intended to contain the latching mechanism intended to maintain the rotor in its various positions, a first stator 18, a second stator 20, a third stator 22 and a cover 24 .
  • This last is fixed to the third stator 22 by studs 26 integral with the third stator 22 and crushed on its surface.
  • Plugs 28 constituting connection terminals protrude from the cover 24 by holes formed therein.
  • grooves 32 can optionally be formed at the periphery of the stack so that they facilitate installation in certain devices.
  • the configuration of the switch in FIG. 1 is very similar to that of a conventional switch, but it essentially differs therefrom by the presence of the third stator ring 22.
  • the main characteristics of the invention are not shown in Figure 1 because they are hidden inside the switch.
  • FIGS. 2 and 3 better represent the details of a rotary switch according to the invention.
  • the mechanism for locking and controlling the rotor is of a known type.
  • the cylindrical body 16 having at its periphery a rounded groove part 32 and grooves of rectangular section 34 for housing the claws 30, has a substantially continuous planar part pierced with a central hole 36 intended for the passage of the axis 12.
  • a cavity is formed inside the body 16 and it is delimited by a wall comprising several protrusions 38 in an arc of a circle separated by cavities 40. The number of cavities and protrusions is even so that two pins 42 of positioning, diametrically aligned with respect to a rotor actuating member 44, are located simultaneously in two diametrically opposite cavities 40 of the body 16 of the latching device.
  • the pins 42 are housed in radial holes of the member 44 and are pushed outwardly by springs 46, in a conventional manner.
  • the actuating member 44 also has a projection 48 having radial arms which protrude therefrom and which are intended to drive the rotor in rotation.
  • the body 16 is provided with positioning lugs 50 which protrude in the axial direction.
  • the first stator 18 comprises a body of cylindrical shape, having the configuration of a crown, carrying a contact 52 which is connected to an internal ring 54 which is continuous, in the case of this stator. All the contact strips, described later, are permanently in contact with this conductive ring 54 which is equivalent to a group of pads in maximum number, ten in the case considered since the latching device 16 determines ten different positions of the rotor.
  • the studs separated from the crown 54 have the disadvantage, compared to a continuous crown, of causing increased wear at the edges. The formation of such a continuous ring on the contrary allows continuous contact so that wear is reduced.
  • This crown is however equivalent to studs for the definition of the invention.
  • the body has a cylindrical cavity 56 turned on the side opposite to the latching device 16. This cavity is intended to partially house the rotor, itself described in more detail in the remainder of this specification.
  • the next stator ring which bears the reference 20 also has a similar cavity 58 but turned towards the latching device so that the two cavities 56 and 58 form a housing.
  • the stator 20 has several pads 60 which are connected in groups. A first group of pads is electrically powered by a first plug 62, a second group by a second plug 64 and a third group by a third plug 66. This can be extended as shown in dashed lines in FIG. 2, by a arm 68 intended to be folded above the stator 22 but below the cover 24 so that its end has a determined position, as indicated in broken lines in FIG. 1.
  • the third stator 22 is also provided of a molded body having a contact plug 70 connected to studs 72 which project inwards.
  • this third stator 22 has only one group of studs 72, but these are reduced in number, five in the example considered.
  • Positioning lugs 74 are intended to penetrate holes 76 of the first stator 18 and holes 78 of the third stator 22 and 80 of the cover 24. The ends of the lugs form the projections 26 which retain the cover 24 on the other elements.
  • the latching device 16, the three stators 18, 20 and 22 and the cover 24 are therefore stacked in contact with each other, in a position determined in rotation given the cooperation of the positioning pins and their housing holes. They thus form a fixed assembly which extends beyond the contact terminals 28 and the rotary axis 12 and they delimit an internal cavity intended to house the rotor, described hereinafter in this specification.
  • the rotor 80 has a flat cylindrical shape of which protrudes from a flange 82. This is intended to be housed in the cavity 56, 58 formed by the stators 18, 20, with two stop rings 84, 86 which facilitate the sliding of the flange 82 in the stators.
  • the stator On each side, the stator has a cavity 88, 90 delimited by projections and which is complementary to the projection 48 carried by the operating member 44. The cavity 88 is intended to cooperate with the projection 40 of the operating member while the projection 90, turned on the other side, allows the mounting of a connecting element of another switch, mounted on the switch shown after removal of the cover 24, if necessary.
  • the rotor body 80 has cavities 92, directed radially and each intended to contain an assembly 94 with lamella.
  • Each assembly 94 first comprises a guide member which comprises a first bar 96 intended to penetrate a slot in each housing 92 of the rotor 80 and a second bar 98 which projects laterally and which is intended to support a strip.
  • This bar 98 ends with an end 100 whose shape allows the introduction of the associated contact strip while retaining it so that it cannot come out.
  • the strip 102 itself comprises a body ending in two contact parts 106 which have a rounded shape and the body is surrounded by two cheeks 108 folded in on either side and ending in a foot 110.
  • each strip 102 has a central hole through which the bar 98 of the guide member passes.
  • the contact parts 106 are intended to come against studs such as 54, 60, 72 and the cheeks 108 are intended to limit the movement of each strip 102 towards the outside, by contact of these cheeks 108 with the rings 84, 86 stop.
  • a spring 104 normally pushes each lamella 102 toward the stop rings. In this way, the contact parts 106 tend to come against the studs.
  • Figure 3 clearly shows the main features of the invention.
  • a strip has a relatively short axial dimension so that, as shown, it can be in contact with studs 54, 60 of the first and second stator 18, 20. However, it is too short for come into contact with the pads 72 of the third stator 22.
  • the strip shown 102 has a larger axial dimension so that it can be simultaneously in contact with a pad 54 of the first stator 18 and a pad 72 of the third stator 22, without being in contact with a pad 60 of the second stator 20.
  • the pad 72 was removed, the lower contact part does not could not come against the stud 60 of the second stator 20 because the cheek 108 would then come into contact with the stop ring 86, in the circled part 112.
  • the shape of the cheeks 108 allows the contact of the strip 102 with a stud 60 of the intermediate stator 20. In this way, the number of combinations which can be obtained with the rotary switch is notably increased.
  • the invention also applies to switches comprising a larger number of stators.
  • an additional stator can be mounted between the latching device 16 and the first stator 18. Its arrangement is then completely similar to that of the third stator 22, but it is reversed with respect to the latter.
  • the blades can ensure contact between two adjacent stators only, between two stators separated by a third stator or between the most distant stators.

Landscapes

  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
EP83400373A 1982-02-26 1983-02-23 Commutateur électrique rotatif Withdrawn EP0088014A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8203200 1982-02-26
FR8203200A FR2522439A1 (fr) 1982-02-26 1982-02-26 Commutateur electrique rotatif

Publications (1)

Publication Number Publication Date
EP0088014A1 true EP0088014A1 (fr) 1983-09-07

Family

ID=9271375

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83400373A Withdrawn EP0088014A1 (fr) 1982-02-26 1983-02-23 Commutateur électrique rotatif

Country Status (2)

Country Link
EP (1) EP0088014A1 (enrdf_load_stackoverflow)
FR (1) FR2522439A1 (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2584232A1 (fr) * 1985-06-28 1987-01-02 Siemens Ag Unite formant commutateur
EP0287467A1 (fr) * 1987-04-14 1988-10-19 Marcel Henri Deltoer Commutateur électrique à connecteur intégré

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE806690C (de) * 1949-08-23 1951-06-18 Busch Jaeger Luedenscheider Me Elektrischer Drehschalter, dessen die ortsfesten Kontaktteile und die Anschlussklemmen tragender Sockel aus paketartig geschichteten, z.B. ringfoermigen Teilen besteht
FR1398866A (fr) * 1964-04-01 1965-05-14 Commutateur rotatif et procédé de fabrication de stator pour de tels commutateurs
US3668338A (en) * 1971-02-01 1972-06-06 Grayhill Miniature axial bridging rotary switch with improved housing

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE806690C (de) * 1949-08-23 1951-06-18 Busch Jaeger Luedenscheider Me Elektrischer Drehschalter, dessen die ortsfesten Kontaktteile und die Anschlussklemmen tragender Sockel aus paketartig geschichteten, z.B. ringfoermigen Teilen besteht
FR1398866A (fr) * 1964-04-01 1965-05-14 Commutateur rotatif et procédé de fabrication de stator pour de tels commutateurs
US3668338A (en) * 1971-02-01 1972-06-06 Grayhill Miniature axial bridging rotary switch with improved housing

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2584232A1 (fr) * 1985-06-28 1987-01-02 Siemens Ag Unite formant commutateur
EP0287467A1 (fr) * 1987-04-14 1988-10-19 Marcel Henri Deltoer Commutateur électrique à connecteur intégré
FR2614141A1 (fr) * 1987-04-14 1988-10-21 Deltoer Marcel Commutateur electrique a connecteur integre
US4866220A (en) * 1987-04-14 1989-09-12 Deltoer Marcel H Electric switch with integrated connector

Also Published As

Publication number Publication date
FR2522439A1 (fr) 1983-09-02
FR2522439B1 (enrdf_load_stackoverflow) 1984-04-06

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