US3798763A - Method of making a rotary switch stator - Google Patents

Method of making a rotary switch stator Download PDF

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Publication number
US3798763A
US3798763A US00335171A US33517173A US3798763A US 3798763 A US3798763 A US 3798763A US 00335171 A US00335171 A US 00335171A US 33517173 A US33517173 A US 33517173A US 3798763 A US3798763 A US 3798763A
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US
United States
Prior art keywords
parts
radial
parallel
portions
stator
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
US00335171A
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English (en)
Inventor
M Deltoer
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Individual
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Individual
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Publication of US3798763A publication Critical patent/US3798763A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
    • H01H11/06—Fixing of contacts to carrier ; Fixing of contacts to insulating carrier
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/0056—Apparatus or processes specially adapted for the manufacture of electric switches comprising a successive blank-stamping, insert-moulding and severing operation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49009—Dynamoelectric machine
    • Y10T29/49011—Commutator or slip ring assembly
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49105—Switch making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49204—Contact or terminal manufacturing
    • Y10T29/49208—Contact or terminal manufacturing by assembling plural parts
    • Y10T29/4922—Contact or terminal manufacturing by assembling plural parts with molding of insulation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49204—Contact or terminal manufacturing
    • Y10T29/49208—Contact or terminal manufacturing by assembling plural parts
    • Y10T29/49222—Contact or terminal manufacturing by assembling plural parts forming array of contacts or terminals

Definitions

  • the present invention relates to a method of producing a stator element for a miniature rotary switch, and the stator element so produced.
  • a switch constructed using the design of the present invention is suitable for direct mounting on a standard predrilled printed circuit board.
  • Such a construction has the disadvantage that the contact studs formed by the inner ends of the stator conductors are relatively-fragile and the contacts are subject to electrical losses.
  • a method of manufacturing a rotary switch stator including the steps of:
  • FIG. I is a plan view of a round wire bent in a plane
  • FIG. 2 shows two superposed wires one being of the form of FIG. 1, the other being a mirror image of the first;
  • FIG. 3 is a sectional view rated in a mold
  • FIG. 4 is a perspective view of a stator element produced in accordance with the present invention.
  • the wire A is bent into the shape shown which shape comprises three bent loops 1, 2, 3, which are joined by the semi-circular rounded sec tions 4 at their outer ends, to form a hairpin-shaped element, so that, with the two ends 5 and 6 of the wire,
  • the four rectilinear portions 7 form six parallel rectilinear branches.
  • the central arms 2 are shaped such as to comprise two rectilinear sections 8 and 8a joined by a rounded section 9, the rectilinear sections being radial in relation to the centre 0 there being an angle 3 of between them.
  • the two external pairs of arms 1 and 3 are bent over at their inner ends towards the central arms 2 and each comprise two rectilinear radial sections 8 joined by the arcs 9, the said radial sections being at an angle of 60 to one another with two neighbouring rectilinear sections 8, belonging to two different loops, also having an angle of 60 between them.
  • the two pairs of arms I and 3 may be positioned symmetrically about the central arms, which are also of symmetrical form.
  • the ends of the three pairs of arms incorporated in the molded member B are deformed to correspond to a rotation of all the elements 8 through relative to the axis XX in the plane of the member B and about the centre 0.
  • the rectilinear section 8a is at an angle a of exactly 15 with the said axis XX.
  • FIGS. 2 and 3 there is shown an example of a mold assembly which enables two flat wires shaped as above to be incorporated in a molded member.
  • the mold illustrated in FIG. 3 comprises a base 12, an intermediate section 13, a top section 14 and a central core 15, the elements 12,13 and 14 being secured together by means of pins 29.
  • Tile mold base 12 is provided with an injection orifice 25, and a central annular part 16 on the top of which there are cut 12 radial slots 17 of semi-cylindrical form, which are intended to receive the 12 radial sections 8 of the two bent wires A and C.
  • the edge of the base 12 is formed with six rectilinear slots 18 running perpendicular to the said edge, which receive the rectilinear sections 5, 6 and 7 of the wire A.
  • the intermediate section 13 is formed with six slots 19 in registration with the slots 18 in the face of the base 12, and six other slots 21 in the face directed towards the cover 14, which latter slots are interspaced, as seen in plan view, between the mentioned slots (18 and 19) and receive the rectilinear sections 5, 6 and 7 of the wire C.
  • the cover 14 is formed with six slots 22 opposite the slots 21 and a central bore 23 to enable thecore 15 to be slid in and out of the mold.
  • the wire A is first placed in one-half of the slots 17 and 18.
  • the section 13 is then lowered onto the base 12, and there is then placed on this section the wire C, still in the flat state, which is clamped parallel to the plane of the wire A by the cover 14 which is pressed against the section and the base.
  • the core 15 is pushed into position and is prevented from rotating in relation to the remainder of the mold by suitable means (not shown).-The end of the core 15 has formed in it the radial slots 32 which match the slots 17.
  • the pairs of arms, 1, 2 and 3 of the said wire are bent downwards and the curved sections 26 and 27 (FIG. 2) of the wire are bent as illustrated in FIG. 3 within an annular cavity 28 bounded by the core 15 formed the inner wall and the elements 12, 13 and 14 forming the outer wall.
  • a suitable electrical insulating material in liquid or semi-liquid form is pumped into the annular cavity 28 through the injection orifice 25, said material then solidifying in the course of time.
  • the various wire sections 7 are permanently located in the positions illustrated in FIGS. 2 and 3.
  • the molding is released and trimmed and the rounded arcs 9 within the cavity 30 of the molded member B are cut off in a press, the outer arcs being similarly removed and the molded article shown in FIG. 4 is obtained.
  • the twelve rectilinear sections 8 project radially into the cavity 30 and each of them is contiguous with one pin (5, 6 or 7), the parallel pins being disposed to form two sets of six equi-distant pins in two parallel planes. These pins are arranged in two rows which are staggered in relation to one another with a uniform square spacing of 2.5 mm, which is the standard spacing for weak-current printed circuit cards.
  • the radial sections 8 are advantageously turned down as shown or bent in a press so as to be spaced apart and more suitably shaped to enable a movable contact member to slide over them. If the pins 5, 6, 7 are intended to have conductors fixed thereon by wrapping they may be of the length shown in the drawings. If the connecting conductors are soldered to these pins, they may be shortened and the wire may be bent to the length defined by the rounded portions 4a.
  • the cavity 30 may include a shoulder 31 forming a bearing for the rotor.
  • the invention is applicable to the production of miniature contactors, such as those used in the. complex electronic circuits produced on parallel spaced-apart cards, on which they are mounted circuits associated with electronic components.
  • a method of manufacturing a rotary switch stator including the steps of:

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Switches (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Manufacture Of Motors, Generators (AREA)
US00335171A 1972-03-24 1973-02-23 Method of making a rotary switch stator Expired - Lifetime US3798763A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7210428A FR2176593B1 (enrdf_load_stackoverflow) 1972-03-24 1972-03-24

Publications (1)

Publication Number Publication Date
US3798763A true US3798763A (en) 1974-03-26

Family

ID=9095769

Family Applications (1)

Application Number Title Priority Date Filing Date
US00335171A Expired - Lifetime US3798763A (en) 1972-03-24 1973-02-23 Method of making a rotary switch stator

Country Status (8)

Country Link
US (1) US3798763A (enrdf_load_stackoverflow)
JP (1) JPS5218391B2 (enrdf_load_stackoverflow)
CA (1) CA994088A (enrdf_load_stackoverflow)
DD (1) DD103089A5 (enrdf_load_stackoverflow)
DE (1) DE2307008C3 (enrdf_load_stackoverflow)
FR (1) FR2176593B1 (enrdf_load_stackoverflow)
GB (1) GB1381064A (enrdf_load_stackoverflow)
IT (1) IT978703B (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4112576A (en) * 1975-11-17 1978-09-12 Harry Robert Gross Method of making a switch
DE2825986A1 (de) * 1977-06-28 1979-01-18 Alps Electric Co Ltd Elektrischer schalter mit veraenderlichem widerstand als abstimmvorrichtung, insbesondere fuer fernsehgeraete
US4445736A (en) * 1982-03-31 1984-05-01 Amp Incorporated Method and apparatus for producing a premolded packaging
US4785532A (en) * 1985-10-22 1988-11-22 Amp Incorporated Method of making electrical connector assembly for antiskid braking system
US4821413A (en) * 1986-04-15 1989-04-18 Preh Elektrofeinmechanische Werke Jakob Preh Nachf. Gmbh & Co. Method of making electric component
US5887342A (en) * 1996-02-08 1999-03-30 Bayerische Motoren Werke Aktiengesellschaft Method for making an electronic control unit
US6477763B1 (en) * 1996-02-28 2002-11-12 Valeo Systemes D'essuyage Method for making a wire-wound rotating part for an electrically driven machine

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5243679U (enrdf_load_stackoverflow) * 1975-09-23 1977-03-28
JPS5194567A (enrdf_load_stackoverflow) * 1975-11-28 1976-08-19
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
JPS5814426A (ja) * 1981-07-16 1983-01-27 オムロン株式会社 スイツチベ−スの製造方法
DE3435065A1 (de) * 1984-09-25 1986-04-03 Ebe Elektro-Bau-Elemente Gmbh, 7022 Leinfelden-Echterdingen Kontaktanordnung fuer stufenschalter
EP0486696B1 (en) * 1990-06-09 1995-11-22 Bando Kiko Co. Ltd. Surface grinder for glass plate
JPH0756843B2 (ja) * 1990-07-13 1995-06-14 株式会社村田製作所 可変抵抗器
JPH0756842B2 (ja) * 1990-07-13 1995-06-14 株式会社村田製作所 可変抵抗器

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2668894A (en) * 1951-08-27 1954-02-09 Carbonneau Ind Inc Commutator and method of manufacture therefor
US2786985A (en) * 1952-07-11 1957-03-26 Breeze Corp Miniature slip ring and process of making the same
US3011041A (en) * 1958-09-30 1961-11-28 Unison Products Company Inc Precision switch and method of construction
US3219785A (en) * 1960-02-01 1965-11-23 Cts Corp Multiple contact stator unit for rotary switch and method of making the same
US3261929A (en) * 1964-02-17 1966-07-19 Avco Corp Sub-miniature selector device with eccentrically displaced contact wiper apparatus
US3478180A (en) * 1968-05-14 1969-11-11 Stockpole Carbon Co Rotary electric switch
US3524250A (en) * 1968-04-08 1970-08-18 Circuit Res Co Method of manufacturing electrical wire wound machines
US3529348A (en) * 1966-07-15 1970-09-22 Superior Electric Co Method of manufacturing adjustable voltage autotransformer
US3539854A (en) * 1967-09-15 1970-11-10 Interelectric Sachseln Ow Commutator for a miniature motor
US3548123A (en) * 1969-05-05 1970-12-15 Kollsman Instr Corp Rotary electric switch
US3599325A (en) * 1969-06-09 1971-08-17 Photocircuits Corp Method of making laminated wire wound armatures

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3579743A (en) * 1970-06-30 1971-05-25 Stackpole Carbon Co Apparatus for making stators for rotary electric switches

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2668894A (en) * 1951-08-27 1954-02-09 Carbonneau Ind Inc Commutator and method of manufacture therefor
US2786985A (en) * 1952-07-11 1957-03-26 Breeze Corp Miniature slip ring and process of making the same
US3011041A (en) * 1958-09-30 1961-11-28 Unison Products Company Inc Precision switch and method of construction
US3219785A (en) * 1960-02-01 1965-11-23 Cts Corp Multiple contact stator unit for rotary switch and method of making the same
US3261929A (en) * 1964-02-17 1966-07-19 Avco Corp Sub-miniature selector device with eccentrically displaced contact wiper apparatus
US3529348A (en) * 1966-07-15 1970-09-22 Superior Electric Co Method of manufacturing adjustable voltage autotransformer
US3539854A (en) * 1967-09-15 1970-11-10 Interelectric Sachseln Ow Commutator for a miniature motor
US3524250A (en) * 1968-04-08 1970-08-18 Circuit Res Co Method of manufacturing electrical wire wound machines
US3478180A (en) * 1968-05-14 1969-11-11 Stockpole Carbon Co Rotary electric switch
US3548123A (en) * 1969-05-05 1970-12-15 Kollsman Instr Corp Rotary electric switch
US3599325A (en) * 1969-06-09 1971-08-17 Photocircuits Corp Method of making laminated wire wound armatures

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4112576A (en) * 1975-11-17 1978-09-12 Harry Robert Gross Method of making a switch
DE2825986A1 (de) * 1977-06-28 1979-01-18 Alps Electric Co Ltd Elektrischer schalter mit veraenderlichem widerstand als abstimmvorrichtung, insbesondere fuer fernsehgeraete
US4445736A (en) * 1982-03-31 1984-05-01 Amp Incorporated Method and apparatus for producing a premolded packaging
US4785532A (en) * 1985-10-22 1988-11-22 Amp Incorporated Method of making electrical connector assembly for antiskid braking system
US4821413A (en) * 1986-04-15 1989-04-18 Preh Elektrofeinmechanische Werke Jakob Preh Nachf. Gmbh & Co. Method of making electric component
US5887342A (en) * 1996-02-08 1999-03-30 Bayerische Motoren Werke Aktiengesellschaft Method for making an electronic control unit
US6477763B1 (en) * 1996-02-28 2002-11-12 Valeo Systemes D'essuyage Method for making a wire-wound rotating part for an electrically driven machine

Also Published As

Publication number Publication date
DE2307008B2 (de) 1974-02-14
IT978703B (it) 1974-09-20
FR2176593A1 (enrdf_load_stackoverflow) 1973-11-02
FR2176593B1 (enrdf_load_stackoverflow) 1974-09-13
JPS5218391B2 (enrdf_load_stackoverflow) 1977-05-21
DE2307008C3 (de) 1974-09-19
CA994088A (fr) 1976-08-03
DD103089A5 (enrdf_load_stackoverflow) 1974-01-05
GB1381064A (en) 1975-01-22
DE2307008A1 (de) 1973-10-04
JPS4913678A (enrdf_load_stackoverflow) 1974-02-06

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