US3264442A - Switching device using flat contact pieces - Google Patents

Switching device using flat contact pieces Download PDF

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Publication number
US3264442A
US3264442A US410403A US41040364A US3264442A US 3264442 A US3264442 A US 3264442A US 410403 A US410403 A US 410403A US 41040364 A US41040364 A US 41040364A US 3264442 A US3264442 A US 3264442A
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US
United States
Prior art keywords
contact
guide
spring
contact piece
flat
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
US410403A
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English (en)
Inventor
Holzer Walter
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Individual
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Individual
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Filing date
Publication date
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Publication of US3264442A publication Critical patent/US3264442A/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H15/00—Switches having rectilinearly-movable operating part or parts adapted for actuation in opposite directions, e.g. slide switch
    • H01H15/02—Details
    • H01H15/06—Movable parts; Contacts mounted thereon
    • H01H15/10—Operating parts
    • H01H15/102—Operating parts comprising cam devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/22—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5805—Connections to printed circuits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5833—Electric connections to or between contacts; Terminals comprising an articulating, sliding or rolling contact between movable contact and terminal

Definitions

  • This invention relates to flat contacts having the form of elongated stamped members which are positively pressed by a spring against conductive surfaces or contacts.
  • One end of the said stamped part is designed as a bearing and, during the switching movements of the stamped part, rolls along the conductive coating, the stamped part being guided in an edgewise guide.
  • a flat contact of this type is already known which. is advantageously used as a switching element for printed circuits, because, with the form according to the invention, numerous soldered connections may be saved and assembly simplified.
  • edge/wise guiding of the stamped .part presents difficulties and that, for a reliable edgewise guide, additional guide elements have to be provided which advantageously increase the size of the fiat contact.
  • additional guide elements have to be provided which advantageously increase the size of the fiat contact.
  • the individual component parts of this flat contact such as for example the aforesaid edgewise guide, the thrust spring and the stamped part, have to be assembled stepwise, which, having regard to the small dimensions of these components, makes great requirements of the assembly personnel, individual small components very frequently being lost.
  • the tasks imposed are resolved in a flat contact haw/ing the form of an elongated stamped part, which is pressed operatively by a spring against conductive surfaces, one end of the stamped part taking the shape of a bearing and, during switching movements of the stamped part in an edgewise guide, following the conductive surface, by said edgewise guide being fitted with 'stop and self-cleaning contact surfaces for the bearing of the stamped part and being formed with this by reason of the spring into an operatively interlocked assembly unit with connecting elements, the fitment length of which corresponds substantially to the length of the stamped part.
  • the individual components of the flat contacts are interlocked into one assembly unit already prior to assembly so that the aforesaid unit can, without further labor expenditure, be incorporated complete into a switch or other electrical device.
  • this novel flat contact formed according to the invention can find application not only in connection with printed circuits but has the form of an independent switch, the assembly unit already having connecting elements through which the current can be supplied. Yet a further advantage resides in the short fitment length, so
  • the bearing being against a contact surface which is arranged at an angle to the direction of thrust of the spring and being limited by stop faces, the reciprocal distance between which leaving a clearance in respect of the width of the bearing so that the latter can be displaced on the contact face under the action of the spring pressure which is directed slantwise thereto, so that, with every switching movement, friction occurs between the bearing and the contact face, which causes the same to be automatically cleaned.
  • the edgewise guide including the stop and contact faces, is of thin-Walled section with a pressed-out guide lug, the stamped member being arranged between this and the wall of the section.
  • the edgewise guide including the stop, contact and guide faces, can be economically manufactured in one operation.
  • a recess is provided in the shaped section to take a spring which bears on the one hand against the said shaped section and on the other against the stamped member, a locking pin being arranged in the recess for one end of the spring whilst into the other end of the spring a locking protuberance on the stamped member engages.
  • the thin-walled construction of the shaped section and the stamped part it is only the diameter of the small-dimension spring which determines the width of the assembled unit, so that, where there is little space, a large number of units according to the invention can be arranged parallel with one another, which is not the case with any of the known flat contacts which have a substantially greater width.
  • Both of these above mentioned embodiments guarantee optionally an inclined position of the contact face to the direction of spring thrust, so that, when the stamped part is displaced longitudinally in the magnitude of the clearance between the bearing and the stop faces, the bearing, by reason of the action of the operated cam, performs a self cleaning frictional movement against the direction of spring pressure and on the contact face.
  • FIG. .1 illustrates diagrammatically the side elevation of a fiat contact formed according to the invention, incorporated in a switch'housing.
  • FIG. 2 shows a cross-section along the line IIII of 1 FIG. 1.
  • FIG. 3 shows on an enlarged scale the flat contact in FIGS. 1 and 2 during operation by a switching cam.
  • FIG. 4 likewise in enlarged scale, shows a part ofthe flat contact of FIG. 3, but with a different spring arrangement.
  • FIG. 5 shows diagrammatically the perspective view of an assembly unit of the flat contact according to the in-".
  • FIG..-1 shows the flat contact in the form of an elonintermediate space in which the stamped part 1 is'ac-,
  • the edgewise guides has a recess 7 in which is arranged a spring 8 which bears at one end against a locking pin'9'in the edgewise guide 5 and at the other against a locking protuberance 10 on the stamped part 1.
  • the scanning contact 2 rests on a stationary contact 11, so thatthe bearing 3, under the pressure of the spring 8, is pressed 4 embodiment of the flat contactaccording to the invention, wherein the contact face 4 is substantially parallel with the longitudinal central line 25,?whilst-the locking pin andlocking protuberance .IO are-each on different verticals 26*, 27 intelation to the longitudir'lalcentralline 25,, so that the spring 8 is given a slanting, position, the
  • the edgewise guide 5 is held in the rear wall 13 of a switch housing 14,-
  • FIG. 2 a cross-section taken along the line IIII' of FIG. 1 is shown and it is seen that the width of the fiat contact, with stamped part 1 and edgewise guide 5 is essentially determined by the diameter of the small dimensioned spring 8, so that, by reason of this minimum width, a plurality of fiat contacts constructed according to the invention can be accommodated, even where the space available is restricted.
  • the pressure component 23 of a spring pressure in the direction 18 has the effect of causing the bearing 3 to slide back into the position shown in FIG. 3 in chaindotted lines, the stamped part 1 being displaced against the direction of the arrow 22 and consequently also of producing a self-cleaning frictional action between the scanning contact 2 and the stationary contact. 11, so-that,
  • FIG. 3 shows a possible modified
  • FIG. 5 shows diagrammatically the perspective viewof the individual, components of the flat contact which, by reason of the design accordingto the invention, can
  • assembly unit 29 can be composed into a positively, and partly even operatively 1 interlocked assembly unit 29.
  • An, assembly unit each as this can .be mountedv and transported without the danger of any ,of the individual components being1ost.1
  • incorporation in an electrical unit, for example a
  • the flat contact according to the invention in all its embodiments, is ideal in the event of the greatestpossible number of such switches needing to be simply and with a minimum of'assembly expenditure, accommodated in a limited space.
  • a switching device comprising a stamped flat contact piece, one end of said fiat contact piece being adapted to act simultaneously as a bearing and as. a contact, and the other end of said contact piece having a cam follower portion adaptedtomest on a cam and having: a contact portion adapted to contact a counter contact :piece, a,
  • said flat contact piece having a protuberance upon which said spring is positioned and an edgewise guide holding said contact-piece, said edgewise guide having stop faces and a self cleaning contact face, said bearing end of said flat contact piece resting on said .con tact face of said guide, said spring being connected to said guide whereby said flat contact piece, said spring and said guide form a positively connected interlocked assembly, the length of the assembly corresponding substantially to the length of said flat contact piece.
  • edgewise guide is a thin walled cut form having a punched out g-uide lug, said contact piece being positioned between said guide lug and out form wall of said guide.

Landscapes

  • Push-Button Switches (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
US410403A 1963-11-27 1964-11-12 Switching device using flat contact pieces Expired - Lifetime US3264442A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH50957A DE1218593B (de) 1963-11-27 1963-11-27 Flachkontaktstueck

Publications (1)

Publication Number Publication Date
US3264442A true US3264442A (en) 1966-08-02

Family

ID=7157540

Family Applications (1)

Application Number Title Priority Date Filing Date
US410403A Expired - Lifetime US3264442A (en) 1963-11-27 1964-11-12 Switching device using flat contact pieces

Country Status (3)

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US (1) US3264442A (de)
DE (1) DE1218593B (de)
GB (1) GB1085705A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4926019A (en) * 1988-09-08 1990-05-15 Siemens Energy & Automation, Inc. Moving copper pivot
US5423227A (en) * 1991-10-30 1995-06-13 U.S. Philips Corporation Device for generating multi-directional commands
US5504291A (en) * 1994-02-14 1996-04-02 Square D Company Contact blade assembly for a circuit breaker
US6015957A (en) * 1998-12-31 2000-01-18 General Electric Company High ampacity pinless conducting joint in movable contact arm assembly
US6831237B1 (en) * 2003-11-25 2004-12-14 Honeywell International Inc. Swing arm switch actuator assembly

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8913522U1 (de) * 1989-11-13 1991-03-14 Siemens AG, 8000 München Niederspannungs-Leistungsschalter mit einer Hebelkontaktanordnung
DE19530492B4 (de) * 1995-08-18 2005-08-04 Siemens Ag Bewegkontakt mit Schneidenlagerung

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3032617A (en) * 1958-07-26 1962-05-01 Holzer Walter Apparatus for controlling fully automatic washing machines

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3032617A (en) * 1958-07-26 1962-05-01 Holzer Walter Apparatus for controlling fully automatic washing machines

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4926019A (en) * 1988-09-08 1990-05-15 Siemens Energy & Automation, Inc. Moving copper pivot
US5423227A (en) * 1991-10-30 1995-06-13 U.S. Philips Corporation Device for generating multi-directional commands
US5504291A (en) * 1994-02-14 1996-04-02 Square D Company Contact blade assembly for a circuit breaker
US6015957A (en) * 1998-12-31 2000-01-18 General Electric Company High ampacity pinless conducting joint in movable contact arm assembly
US6831237B1 (en) * 2003-11-25 2004-12-14 Honeywell International Inc. Swing arm switch actuator assembly

Also Published As

Publication number Publication date
GB1085705A (en) 1967-10-04
DE1218593B (de) 1966-06-08

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