US3875353A - Multistage switch assembly having radial contacts axially bridging successive printed circuit board contacts - Google Patents

Multistage switch assembly having radial contacts axially bridging successive printed circuit board contacts Download PDF

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Publication number
US3875353A
US3875353A US428095A US42809573A US3875353A US 3875353 A US3875353 A US 3875353A US 428095 A US428095 A US 428095A US 42809573 A US42809573 A US 42809573A US 3875353 A US3875353 A US 3875353A
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United States
Prior art keywords
contact
housing
rotor
multistage switch
switch
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Expired - Lifetime
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US428095A
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English (en)
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Labib Mardach
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Individual
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Individual
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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
    • 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
    • H01H19/02—Details
    • H01H19/03—Means for limiting the angle of rotation of the operating part
    • 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
    • H01H19/02—Details
    • H01H19/10—Movable parts; Contacts mounted thereon
    • H01H19/11—Movable parts; Contacts mounted thereon with indexing means

Definitions

  • ABSTRACT A multistage switch. more particularly for printed circuits. having a substantially cylindrical rotor carrying radially projecting contact elements. contact plates being provided which each close a lateral longitudinal slot of the housing wall so as to complete the internal housing wall surrounding the rotor and have contact strips extending tangentially of the peripheral surface of the rotor.
  • the switch is so designed that the rotor can be assembled of a plurality of identical elements which axially succeed one another and each has distributed over its periphery a plurality of recesses for receiving a contact element.
  • the axial structural length of the housing being variable intermediate pieces the length of which corresponds to an integral multiple of the length of the individual elements of the rotor. and the contact elements are of such length that they each connect at least two axially successive contact strips of a contact plate.
  • the present invention relates to a multistage switch, more particularly for printed circuits, having in a housing a substantially cylindrical rotor carrying radially projecting contact elements cooperating with substantially parallel contact strips provided transversely of the rotor axis on at least one lateral contact plate, the contact plate or plates being so arranged with respect to the remainder of the housing that they each close a lateral longitudinal slot ofthe housing so as to complete the internal housing wall surrounding the rotor and their surface carrying the contact strips extends tangentially of the peripheral surface of the rotor.
  • a multistage switch comprising a housing having two end pieces, a substantially cylindrical rotor rotatable within said housing about an axis in the form of a plurality of axially sucessive individual elements forming said rotor, at least one longitudinal slot in the housing substantially parallel to said axis, at least one radially protruding contact on each of said individual elements, at least one removable intermediate piece, provided with at least one longitudinal slot for varying the axial length of said housing, the axial length of each said intermedi ate piece corresponding to an integral multiple of the axial length of said individual element, at least one contact plate, transverse to the axis of the rotor and tangential to the rotor, arranged to overlie the longitudinal slot in the housing and tangential contact strips carried by said contact plate and selectively making electrical contact with said radially protru
  • the rotor is produced from a plurality of axially successive parts.
  • the housing is simultaneously also suitably subdivided, to adapt the length of the switch, and thus the number of available contacts, to the requirements of the occasion.
  • the contact elements are provided at the periphery of the rotor and the switching operation is on any given occasion effected at one and the same contact plate. In this manner considerable freedom is obtained with respect to fitting of contact elements.
  • FIG. I is a side elevation of the rotor of the switch
  • FIG. 2 is an axial section taken along line IIll of FIG. 3;
  • FIG. 3 is an end elevation (from above in FIG. 1) of an individual rotor element
  • FIG. 4 is an exploded view of individual elements of the switch
  • FIG. 5 is a side elevation of a possible embodiment of a contact plate for a switch according to the invention.
  • FIG. 6 and 7 are a side view and a plan view of the assembled multistage switch.
  • the switch according to the invention has a housing, generally designated by the reference numeral 1, assembled from a plurality of individual parts.
  • This housing is provided with a cylindrical bore 2 in which a rotor, generally designated by the numberal 3, is accommodated and rotatable, by means of a shaft 4.
  • the housing is provided along its two longitudinal faces with a longitudinal slot 5 which enables the contact elements 6 of the rotor 3 to engage the contact plates 7 and 7a provided on either side.
  • the contact plates 7 are provided with contact strips 8 and 8a.
  • the contact strips 8 end in terminals 9 serving for connection of the multistage switch with a wiring plate, for example a printed" circuit.
  • the contact strips 8,8a each extend transversely of the longitudinal axis of the switch and parallel to one another.
  • the contact strips 8 are each individually connected to the terminals or connecting lugs 9.
  • the contact 7a on the other hand is so designed that only half of the contact strips i.e., the contact strips 8, are each individually connected to a connecting lug 9, while the respective contact strips 8a situated therebetween are interconnected and jointly connected to a single terminal 9a.
  • the rotor 3 comprises a plurality of, in principle identical, individual elements 11 the precise design of which is apparent from FIGS. 1 to 3.
  • a plurality of such individual elements are axially pushed onto the rectangular shaft 4 to abut the adjacent element and an end piece 12 abuts the element at one end at least.
  • a rectangular shaft 4 and a corresponding opening 13 in the individual elements 11 perfect entrainment of the individual elements is ensured when the shaft 4 is turned.
  • the shaft and the opening could, of course, have a different shape.
  • the lateral faces of the opening 13 in the various individual elements at differing angles to the plane of symmetry 15, according to the dot-dash line 14 of FIG. 3, so that the contact elements 6 of adjacent individual elements 11 are relatively offset in peripheral direction, although the angular spacing between the individual openings 16 for receiving the contact elements 6 is the same.
  • FIGS. 1 to 3 show clearly that the openings 16 for the contact elements 6 have the configuration of longitudinal slits which are formed in an annulus l8 upstanding from a bottom 17 of the individual elements.
  • the annulus 18 is formed with an annular groove 20 opening into the face 19 of the individual elements.
  • a substantially cylindrical attachment 23 protrudes beyond the corresponding face 24 about to the same extent as the face 22 recedes relative to the face 19.
  • recesses 26 for the contact elements 6 which recesses are open toward the face 22, as is shown in FIG. 1 in particular.
  • the recesses 26 are closed by the attachment 23 in the region of the face 22.
  • the contact elements 6 are of substantially U-shaped cross-section. Lateral strips 28 adjoin the legs 27 of the contact elements 6 which are generally bent of sheet metal. In the position of use the strips 28 contact the annulus 18 from inside in the region of the longitudinal slits 16 to retain the contact elements in place.
  • a compression spring 29 holds the contact elements 6 in the position of use and resiliently urges them against the contact plates 7.
  • On end of the compression spring 29 is supported by the contact face 30 of the contact elements 6 and the other end is supported by the bottom of the recesses 26.
  • FIG. 3 shows an individual element 11 fitted with only a single contact element 6. It is, of course, possible to envisage a different arrangement. Moreover, it is also conceivable to provide a greater or smaller number of openings 16 than the six shown. It is of course, very important for the axial extent of the contact surface 30 of the contact elements 6 to be of such magnitude that one contact element 6 always connects at least two contact strips 8 or 80.
  • the housing of the multistage switch includes an end piece 31 (FIG. 4) which is hollow, a second end piece 32 which has an attachment provided with longitudinal slots and a cylindrical bore 2, and optionally one or more intermediate pieces 34 which are provided in pairs.
  • end piece 31 FIG. 4
  • second end piece 32 which has an attachment provided with longitudinal slots and a cylindrical bore 2
  • optionally one or more intermediate pieces 34 which are provided in pairs.
  • pins 35 and, of course, corresponding bores which are not shown in the drawing are provided on the end pieces 31, 32 and the intermediate pieces 34.
  • the housing of the multistage switch is assembled by plugging together the two end parts 31, 32 and, depending on the number of individual elements 11 of the rotor, optionally also one or more pairs ofintermediate pieces 34.
  • end plates 36 which simultaneously also serve for securing the switch to a suitable support are then fitted. Finally the end plates 36 are clamped together by means of screw bolts 38 engaging in lateral slots 37 of the end plates 36 and end pieces 31, 32 and nuts 39 threadably applied onto the screw bolts 38, whereby the individual sections of the housing are secured against loosening.
  • the contact plates 7 prior to insertion of the screw bolts 38 into the slots 37 the contact plates 7 must be laterally fitted to the corresponding contact surfaces 40 of the intermediate pieces 34 and/or end pieces 31, 32.
  • the contact plates 7 are generally secured in this position by means of some kind of suitable arrangements, e.g., by detent elements.
  • an indexing mechanism generally designated by the reference numeral 41, is optionally accommodated in the hollow and piece 31.
  • This indexing mechanism consists of a toothed plate 42 with which resiliently outwardly urged indexing elements 43 cooperate, these being guided in an opening 44 of a drive shaft 45 normally carrying the central knobs.
  • Two toothed rings 46 having protruberences 47 serve for restricting rotation.
  • the protruberences 47 cooperate with stops 48 of the corresponding end plate 36.
  • a multistage switch comprising, in combination:
  • At least one removable intermediate piece provided with at least one longitudinal slot for varying the axial length of said housing, the axial length of each said intermediate piece corresponding to an integral multiple of the axial length of said individual element;
  • At least one contact plate transverse to the axis of the rotor and tagential to the rotor, arranged to overlie the longitudinal slot in the housing;
  • tangential contact strips carried by said contact plate and selectively making electrical contact with said radially protruding contact of said rotor the axial length of said contacts being such as to connect at least two axially successive contact strips of a contact plate.
  • said openings being formed as longitudinal slits extending between the peripheral surface of the individual element and the annual groove, and a retaining strip carried on the radially inner end of said contacts, said retaining strip engaging the annular groove to retain said contact within its slit.
  • a multistage switch as claimed in claim I wherein the contacts have a substantially U-shaped crosssection and are formed of sheet metal and further comprising a compression spring urging said contact elements radially upwardly of the respective individual elements.

Landscapes

  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
US428095A 1973-01-17 1973-12-26 Multistage switch assembly having radial contacts axially bridging successive printed circuit board contacts Expired - Lifetime US3875353A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2302048A DE2302048C2 (de) 1973-01-17 1973-01-17 Mehrstufenschalter

Publications (1)

Publication Number Publication Date
US3875353A true US3875353A (en) 1975-04-01

Family

ID=5869135

Family Applications (1)

Application Number Title Priority Date Filing Date
US428095A Expired - Lifetime US3875353A (en) 1973-01-17 1973-12-26 Multistage switch assembly having radial contacts axially bridging successive printed circuit board contacts

Country Status (8)

Country Link
US (1) US3875353A (enrdf_load_stackoverflow)
JP (1) JPS49103174A (enrdf_load_stackoverflow)
CA (1) CA991689A (enrdf_load_stackoverflow)
CH (1) CH559423A5 (enrdf_load_stackoverflow)
DE (2) DE2302048C2 (enrdf_load_stackoverflow)
FR (1) FR2214167B1 (enrdf_load_stackoverflow)
GB (1) GB1426851A (enrdf_load_stackoverflow)
IT (1) IT1022025B (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5821484A (en) * 1995-02-14 1998-10-13 K.A. Schmersal Gmbh & Co. Safety switch
US20030174941A1 (en) * 2002-03-13 2003-09-18 Network Photonics, Inc. Two-by-two optical routing element using two-position mems mirrors

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3592982A (en) * 1967-02-03 1971-07-13 Marcel Henri Deltoer Rotary selector switches for electronic circuits
US3683132A (en) * 1970-09-08 1972-08-08 Oak Electro Netics Corp Flexible printed circuit forming contact surface around stator of rotary switch
US3735059A (en) * 1971-10-11 1973-05-22 Ebe Gmbh Sliding switch assembly with spring-biased contact and multi-sectional housing
US3754106A (en) * 1972-04-03 1973-08-21 Donald W Mac Panel display switch

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE689917C (de) * 1938-03-06 1940-04-09 Bosch Gmbh Robert Walzenschalter
FR1571512A (enrdf_load_stackoverflow) * 1968-05-10 1969-06-20
US3651287A (en) * 1969-02-26 1972-03-21 Leonard Rubenstein Electrical switch assembly with improved printed circuit contact structure

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3592982A (en) * 1967-02-03 1971-07-13 Marcel Henri Deltoer Rotary selector switches for electronic circuits
US3683132A (en) * 1970-09-08 1972-08-08 Oak Electro Netics Corp Flexible printed circuit forming contact surface around stator of rotary switch
US3735059A (en) * 1971-10-11 1973-05-22 Ebe Gmbh Sliding switch assembly with spring-biased contact and multi-sectional housing
US3754106A (en) * 1972-04-03 1973-08-21 Donald W Mac Panel display switch

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5821484A (en) * 1995-02-14 1998-10-13 K.A. Schmersal Gmbh & Co. Safety switch
US20030174941A1 (en) * 2002-03-13 2003-09-18 Network Photonics, Inc. Two-by-two optical routing element using two-position mems mirrors
US7177498B2 (en) * 2002-03-13 2007-02-13 Altera Corporation Two-by-two optical routing element using two-position MEMS mirrors

Also Published As

Publication number Publication date
IT1022025B (it) 1978-03-20
JPS49103174A (enrdf_load_stackoverflow) 1974-09-30
FR2214167B1 (enrdf_load_stackoverflow) 1977-05-06
CA991689A (en) 1976-06-22
DE2302048A1 (enrdf_load_stackoverflow) 1974-01-10
DE2302048C2 (de) 1974-08-01
FR2214167A1 (enrdf_load_stackoverflow) 1974-08-09
DE2302048B1 (de) 1974-01-10
GB1426851A (en) 1976-03-03
CH559423A5 (enrdf_load_stackoverflow) 1975-02-28
DE7301548U (de) 1973-08-02

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