US2828393A - Electrical assembly - Google Patents
Electrical assembly Download PDFInfo
- Publication number
- US2828393A US2828393A US391234A US39123453A US2828393A US 2828393 A US2828393 A US 2828393A US 391234 A US391234 A US 391234A US 39123453 A US39123453 A US 39123453A US 2828393 A US2828393 A US 2828393A
- Authority
- US
- United States
- Prior art keywords
- assembly
- support plate
- contact
- contacts
- plate
- 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
-
- 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
- Y10T29/49222—Contact or terminal manufacturing by assembling plural parts forming array of contacts or terminals
-
- 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
- Y10T29/49826—Assembling or joining
- Y10T29/49908—Joining by deforming
- Y10T29/49915—Overedge assembling of seated part
-
- 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
- Y10T29/49826—Assembling or joining
- Y10T29/49908—Joining by deforming
- Y10T29/49938—Radially expanding part in cavity, aperture, or hollow body
- Y10T29/49943—Riveting
Definitions
- This invention relates generally to electrical assemblies, and has particular reference to a switch wafer assembly.
- an insulating support plate is provided with a series of contact members mounted thereon to make selective electrical contact with a blade on a rotor or slider.
- the contact members are usually formed of spring brass or bronze, and are customarily attached to the support plate by metal rivets piercing the plate.
- the assembly of such contacts in this manner is a relatively expensive operation, since the rivet and contact must be properly aligned by hand under a suitable press.
- special washers must also be included in the assembly to prevent the rivet from making an electrical circuit between the contacts it retains in assembly.
- the object of this invention is to provide a switch wafer assembly in which the need for separate rivets to retain the contacts in assembly is eliminated.
- a further object of the invention is to provide a switch wafer assembly in which the means retaining the contacts in assembly therein is an integral part of the support plate.
- Fig. 1 is a top plan view of a switch wafer assembly embodying the features of the invention.
- Fig. 2 is a view in section taken on line 22 of Fig. 1.
- Fig. 3 is a view in section taken on line 3-3 of Fig. 1.
- Fig. 4 is a top plan view of a modified form of switch wafer embodying the features of the invention.
- Fig. 5 is a view in section taken on line 55 of Fig. 4.
- Fig. 6 is a view in section taken on line 66 of Fig. 4.
- Fig. 7 is a view in section taken on line 7--7 of Fig. 6.
- a switch wafer assembly 10 which comprises a support plate 12 and a series of contact members 14 assembled thereon.
- the wafer assembly is of the type which is provided with a central opening 16 to receive a rotor 18 having a circuit completing blades 20 and 22 mounted on opposite sides thereof.
- the support plate 12 is formed of a single piece of molded plastic and is provided with a series of integral protruding pins 24 and 26 on opposite sides thereof disposed about the central opening 16. Each pair of pins on opposite sides of the support plate has an aperture 28 associated therewith for a purpose to appear hereinafter.
- the contact members 14 are formed of a strip of metal bent back on itself to provide a soldering terminal 30 at one end and superimposed flexible contact blade receiving jaws 32 at the other end to permit the blades on the rotor to pass therebetween.
- Each contact member 14 is also provided with a projecting tang 34 and an aperture 36 in the medial portion.
- the contact members 14 are assembled onto the support plate by placing them thereon so that an integral pin on the plate extends through the aperture 36, and the tang 34 projects into the aperture 28 associated therewith.
- the pin is then headed or deformed by a suitable tool, with the application of heat, if required by the type of plastic of which the plate is made, so that the end of the pin spreads laterally over the contact member and retains it tightly against the plate, and the projecting tang 34 prevents rotation of the contact member on the plate.
- a contact member may be assembled onto both sides of the plate, as illustrated in Fig. 2, without any electrical contact resulting from such assembly.
- a modified form of switch wafer 40 comprising a support plate 42 and a series of contacts 44 assembled therein.
- the support plate 42 is provided with a central opening 46, and a series of slot-like radially extending elongated recesses 48 disposed thereabout, with projecting pins 50 disposed in the slots.
- the contacts 44 are similar to the contacts 14 previously described, with the exception that no projecting tang is necessary.
- the contacts 44 have an aperture 52 and are seated in the elongated recesses 48 with a pin 50 extending through the aperture 52, said pin being headed or deformed above the contact as previously described to retain it in place on the support plate.
- the fact that the contact 44 is seated in the elongated recesses 48 prevents rotation of the contact on the support plate.
- the illustrated switch wafers are particularly adapted for economical assembly, since only the contact member and the support plate need be handled during assembly, no separate rivets or washers being necessary.
- a switch Wafer assembly comprising a support plate and a series of contact members mounted on a surface thereof, said support plate being formed of a single piece of molded synthetic organic thermoplastic material and having a series of integral contact receiving pins projecting from said surface, each contact member having an aperture therethrough receiving a pin, the end of said pin being deformed to provide a laterally extending portion bearing against the upper surface of the associated contact member to retain the contact in assembly on the support plate free of any metal fastening members.
- a switch wafer assembly as set forth in claim 1 in which the support plate has integral contact receiving pins on opposite sides for receiving and holding contacts on both sides of said supporting plate when desired.
Landscapes
- Manufacture Of Switches (AREA)
Description
March 25, 1958 w. F. WINGARD 2,828,393 I ELECTRICAL ASSEMBLY Filed Nov. 10. 1953 30 Fiche 3e 32 \o Vd-IG FIG.3.
42 I 4o III/I117 \NVENTORt \N\LL|AM E Wm ARD- BY W/m ATTORNEY.
United States Patent ELECTRICAL ASSEMBLY William F. Wingard, Newtonville, Mass, assignor, by
mesne assignments, to United-Carr Fastener Corporatron, Boston, Mass, a corporation of Delaware Application November 10, 1953, Serial No. 391,234
2 Claims. (Cl. 200-466) This invention relates generally to electrical assemblies, and has particular reference to a switch wafer assembly.
In the construction of certain types of rotary and pushbutton switches, an insulating support plate is provided with a series of contact members mounted thereon to make selective electrical contact with a blade on a rotor or slider.
The contact members are usually formed of spring brass or bronze, and are customarily attached to the support plate by metal rivets piercing the plate. The assembly of such contacts in this manner is a relatively expensive operation, since the rivet and contact must be properly aligned by hand under a suitable press. In cases where contacts are needed on both sides of the plate the assembly operation is even more difiicult, and in cases where the contacts on opposite sides of the plate must be insulated from each other, special washers must also be included in the assembly to prevent the rivet from making an electrical circuit between the contacts it retains in assembly.
The object of this invention is to provide a switch wafer assembly in which the need for separate rivets to retain the contacts in assembly is eliminated.
A further object of the invention is to provide a switch wafer assembly in which the means retaining the contacts in assembly therein is an integral part of the support plate.
Other objects of the invention will, in part, be obvious and will, in part, appear hereinafter.
In the drawing:
Fig. 1 is a top plan view of a switch wafer assembly embodying the features of the invention.
Fig. 2 is a view in section taken on line 22 of Fig. 1.
Fig. 3 is a view in section taken on line 3-3 of Fig. 1.
Fig. 4 is a top plan view of a modified form of switch wafer embodying the features of the invention.
Fig. 5 is a view in section taken on line 55 of Fig. 4.
Fig. 6 is a view in section taken on line 66 of Fig. 4.
Fig. 7 is a view in section taken on line 7--7 of Fig. 6.
Referring to Figs. 1-3 of the drawing, there is illustrated a switch wafer assembly 10, which comprises a support plate 12 and a series of contact members 14 assembled thereon.
The wafer assembly is of the type which is provided with a central opening 16 to receive a rotor 18 having a circuit completing blades 20 and 22 mounted on opposite sides thereof. The support plate 12 is formed of a single piece of molded plastic and is provided with a series of integral protruding pins 24 and 26 on opposite sides thereof disposed about the central opening 16. Each pair of pins on opposite sides of the support plate has an aperture 28 associated therewith for a purpose to appear hereinafter.
The contact members 14 are formed of a strip of metal bent back on itself to provide a soldering terminal 30 at one end and superimposed flexible contact blade receiving jaws 32 at the other end to permit the blades on the rotor to pass therebetween. Each contact member 14 is also provided with a projecting tang 34 and an aperture 36 in the medial portion.
The contact members 14 are assembled onto the support plate by placing them thereon so that an integral pin on the plate extends through the aperture 36, and the tang 34 projects into the aperture 28 associated therewith. The pin is then headed or deformed by a suitable tool, with the application of heat, if required by the type of plastic of which the plate is made, so that the end of the pin spreads laterally over the contact member and retains it tightly against the plate, and the projecting tang 34 prevents rotation of the contact member on the plate.
It is evident that a contact member may be assembled onto both sides of the plate, as illustrated in Fig. 2, without any electrical contact resulting from such assembly.
It is also evident that although pins are provided about the entire periphery of the opening in the plate, contact members need be assembled only onto such pins as are necessary to provide the desired circuits.
Referring to Figs. 47 of the drawing, there is illustrated a modified form of switch wafer 40, comprising a support plate 42 and a series of contacts 44 assembled therein. The support plate 42 is provided with a central opening 46, and a series of slot-like radially extending elongated recesses 48 disposed thereabout, with projecting pins 50 disposed in the slots.
The contacts 44 are similar to the contacts 14 previously described, with the exception that no projecting tang is necessary. The contacts 44 have an aperture 52 and are seated in the elongated recesses 48 with a pin 50 extending through the aperture 52, said pin being headed or deformed above the contact as previously described to retain it in place on the support plate. The fact that the contact 44 is seated in the elongated recesses 48 prevents rotation of the contact on the support plate.
The illustrated switch wafers are particularly adapted for economical assembly, since only the contact member and the support plate need be handled during assembly, no separate rivets or washers being necessary.
Since certain obvious changes may be made in the device without departing from the scope of the invention, it is intended that all matter contained herein be interpreted in an illustrative and not in a limiting sense.
I claim:
l. A switch Wafer assembly, comprising a support plate and a series of contact members mounted on a surface thereof, said support plate being formed of a single piece of molded synthetic organic thermoplastic material and having a series of integral contact receiving pins projecting from said surface, each contact member having an aperture therethrough receiving a pin, the end of said pin being deformed to provide a laterally extending portion bearing against the upper surface of the associated contact member to retain the contact in assembly on the support plate free of any metal fastening members.
2. A switch wafer assembly as set forth in claim 1 in which the support plate has integral contact receiving pins on opposite sides for receiving and holding contacts on both sides of said supporting plate when desired.
References Cited in the file of this patent UNITED STATES PATENTS 2,079,003 Dick May 4, 1937 2,195,237 Bryant of a1. Mar. 26, 1940 2,594,190 Mastney Apr. 22, 1952 2,609,570 Danielson et a1. Sept. 9, 1952
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US391234A US2828393A (en) | 1953-11-10 | 1953-11-10 | Electrical assembly |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US391234A US2828393A (en) | 1953-11-10 | 1953-11-10 | Electrical assembly |
Publications (1)
Publication Number | Publication Date |
---|---|
US2828393A true US2828393A (en) | 1958-03-25 |
Family
ID=23545827
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US391234A Expired - Lifetime US2828393A (en) | 1953-11-10 | 1953-11-10 | Electrical assembly |
Country Status (1)
Country | Link |
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US (1) | US2828393A (en) |
Cited By (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2949511A (en) * | 1958-02-10 | 1960-08-16 | Globe Union Inc | Switches |
US2976384A (en) * | 1958-11-06 | 1961-03-21 | Sarkes Tarzian | Switch |
US2984717A (en) * | 1959-06-22 | 1961-05-16 | Max A Loc Inc | Permutation switch |
US3037096A (en) * | 1958-10-24 | 1962-05-29 | Gen Motors Corp | Distributor breaker lever |
US3093713A (en) * | 1959-11-06 | 1963-06-11 | Grigsby Company Inc | Electrical component assembly |
US3124666A (en) * | 1964-03-10 | Distributor having a snap-fitted rotor | ||
US3171906A (en) * | 1962-09-04 | 1965-03-02 | Cts Corp | Rotor for rotary wafer switch with embedded contact interconnecting means |
US3210485A (en) * | 1962-10-24 | 1965-10-05 | Oak Electro Netics Corp | Time tuner assembly with movable electrical component and contact structure |
US3213211A (en) * | 1962-09-04 | 1965-10-19 | Cts Corp | Multi-position wafer switch with fastening means and short-circuiting contact structure |
US3215790A (en) * | 1962-11-07 | 1965-11-02 | Rca Corp | Switch for providing a positional binary number code |
US3242271A (en) * | 1963-07-12 | 1966-03-22 | Globe Union Inc | Electrical switch and improved contact finger and contact clip construction therefor |
US3248488A (en) * | 1961-02-20 | 1966-04-26 | Globe Union Inc | Switch construction and contact clip mounting arrangement therefor |
US3288949A (en) * | 1964-01-17 | 1966-11-29 | Ledex Inc | Multiple switch assembly having stator contacts with prestressed jaws and alignment means |
US3343113A (en) * | 1964-08-07 | 1967-09-19 | Lucas Industries Ltd | Electrical coil assemblies |
US3472985A (en) * | 1966-11-16 | 1969-10-14 | Louis Henry Lucien Malavieille | Electric switch wafer assembly |
US3484515A (en) * | 1967-07-03 | 1969-12-16 | Int Paper Co | Method of applying handles to containers |
US3622953A (en) * | 1970-02-25 | 1971-11-23 | Itt | Electrical terminal assembly |
US3751725A (en) * | 1972-06-28 | 1973-08-07 | S Stavrou | Trimmer capacitor |
US3865249A (en) * | 1972-12-29 | 1975-02-11 | Goodman & Sons Inc H | Merchandise displays and method of manufacture |
US3947391A (en) * | 1974-09-20 | 1976-03-30 | Switchcraft, Inc. | Electrical slide switch |
US4187417A (en) * | 1978-02-02 | 1980-02-05 | Globe-Union Inc. | Printed circuit contact |
US4194805A (en) * | 1973-03-28 | 1980-03-25 | Bunker Ramo Corporation | Electrical contacting element |
US4768968A (en) * | 1981-08-17 | 1988-09-06 | Littelfuse, Inc. | Fuse holder block |
US5152338A (en) * | 1991-10-15 | 1992-10-06 | Eastman Kodak Company | Heat exchanger and method of making same |
US5506379A (en) * | 1994-11-21 | 1996-04-09 | United Technologies Automotive, Inc. | Direct connect yoke terminal |
US6637095B2 (en) * | 2000-03-16 | 2003-10-28 | Böllhoff GmbH | Joining assembly for mounting a fastening element to an external surface of a structural member |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2079003A (en) * | 1936-07-08 | 1937-05-04 | Dewar Mfg Company | Electric switch device |
US2195237A (en) * | 1937-12-31 | 1940-03-26 | Gen Electric | Electric switch |
US2594190A (en) * | 1950-03-09 | 1952-04-22 | Oak Mfg Co | Electrical apparatus |
US2609570A (en) * | 1951-01-22 | 1952-09-09 | Elmer L Danielson | Method for forming a multipart plastic article |
-
1953
- 1953-11-10 US US391234A patent/US2828393A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2079003A (en) * | 1936-07-08 | 1937-05-04 | Dewar Mfg Company | Electric switch device |
US2195237A (en) * | 1937-12-31 | 1940-03-26 | Gen Electric | Electric switch |
US2594190A (en) * | 1950-03-09 | 1952-04-22 | Oak Mfg Co | Electrical apparatus |
US2609570A (en) * | 1951-01-22 | 1952-09-09 | Elmer L Danielson | Method for forming a multipart plastic article |
Cited By (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3124666A (en) * | 1964-03-10 | Distributor having a snap-fitted rotor | ||
US2949511A (en) * | 1958-02-10 | 1960-08-16 | Globe Union Inc | Switches |
US3037096A (en) * | 1958-10-24 | 1962-05-29 | Gen Motors Corp | Distributor breaker lever |
US2976384A (en) * | 1958-11-06 | 1961-03-21 | Sarkes Tarzian | Switch |
US2984717A (en) * | 1959-06-22 | 1961-05-16 | Max A Loc Inc | Permutation switch |
US3093713A (en) * | 1959-11-06 | 1963-06-11 | Grigsby Company Inc | Electrical component assembly |
US3248488A (en) * | 1961-02-20 | 1966-04-26 | Globe Union Inc | Switch construction and contact clip mounting arrangement therefor |
US3171906A (en) * | 1962-09-04 | 1965-03-02 | Cts Corp | Rotor for rotary wafer switch with embedded contact interconnecting means |
US3213211A (en) * | 1962-09-04 | 1965-10-19 | Cts Corp | Multi-position wafer switch with fastening means and short-circuiting contact structure |
US3210485A (en) * | 1962-10-24 | 1965-10-05 | Oak Electro Netics Corp | Time tuner assembly with movable electrical component and contact structure |
US3215790A (en) * | 1962-11-07 | 1965-11-02 | Rca Corp | Switch for providing a positional binary number code |
US3242271A (en) * | 1963-07-12 | 1966-03-22 | Globe Union Inc | Electrical switch and improved contact finger and contact clip construction therefor |
US3288949A (en) * | 1964-01-17 | 1966-11-29 | Ledex Inc | Multiple switch assembly having stator contacts with prestressed jaws and alignment means |
US3343113A (en) * | 1964-08-07 | 1967-09-19 | Lucas Industries Ltd | Electrical coil assemblies |
US3472985A (en) * | 1966-11-16 | 1969-10-14 | Louis Henry Lucien Malavieille | Electric switch wafer assembly |
US3484515A (en) * | 1967-07-03 | 1969-12-16 | Int Paper Co | Method of applying handles to containers |
US3622953A (en) * | 1970-02-25 | 1971-11-23 | Itt | Electrical terminal assembly |
US3751725A (en) * | 1972-06-28 | 1973-08-07 | S Stavrou | Trimmer capacitor |
US3865249A (en) * | 1972-12-29 | 1975-02-11 | Goodman & Sons Inc H | Merchandise displays and method of manufacture |
US4194805A (en) * | 1973-03-28 | 1980-03-25 | Bunker Ramo Corporation | Electrical contacting element |
US3947391A (en) * | 1974-09-20 | 1976-03-30 | Switchcraft, Inc. | Electrical slide switch |
US4187417A (en) * | 1978-02-02 | 1980-02-05 | Globe-Union Inc. | Printed circuit contact |
US4768968A (en) * | 1981-08-17 | 1988-09-06 | Littelfuse, Inc. | Fuse holder block |
US5152338A (en) * | 1991-10-15 | 1992-10-06 | Eastman Kodak Company | Heat exchanger and method of making same |
US5506379A (en) * | 1994-11-21 | 1996-04-09 | United Technologies Automotive, Inc. | Direct connect yoke terminal |
US6637095B2 (en) * | 2000-03-16 | 2003-10-28 | Böllhoff GmbH | Joining assembly for mounting a fastening element to an external surface of a structural member |
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