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US3609619A - Snap-acting flasher switch - Google Patents

Snap-acting flasher switch Download PDF

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Publication number
US3609619A
US3609619A US869068A US3609619DA US3609619A US 3609619 A US3609619 A US 3609619A US 869068 A US869068 A US 869068A US 3609619D A US3609619D A US 3609619DA US 3609619 A US3609619 A US 3609619A
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US
United States
Prior art keywords
vane
ribbon
terminal
base
resistance wire
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
US869068A
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English (en)
Inventor
Masamitsu Nakano
Kazumi Shinozuka
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
Application granted granted Critical
Publication of US3609619A publication Critical patent/US3609619A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H61/00—Electrothermal relays
    • H01H61/06—Self-interrupters, i.e. with periodic or other repetitive opening and closing of contacts
    • H01H61/066—Self-interrupters, i.e. with periodic or other repetitive opening and closing of contacts making use of an extensible wire, rod or strips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
    • B60Q1/34—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating change of drive direction
    • B60Q1/38—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating change of drive direction using immovably-mounted light sources, e.g. fixed flashing lamps
    • B60Q1/387—Mechanical temporisation

Definitions

  • a thermally expansible and contractable ribbon is arranged in spaced relation along the inner face of the vane and secured under tension at its ends to the edges of the vane so as to stress the vane against the force of the prestressing thereof to hold the vane inwardly.
  • the vane is provided with a movable contact cooperative with the stationary contact attached to the supporting terminal.
  • a high-resistance wire is wrapped with its end electrically connected to said ribbon while the other end being connected to the terminal.
  • the principal object of this invention is to provide an improved snap-acting flasher switch, which is particularly adaptable for use in directional turn signal systems for automotive vehicles, and which opens and closes the turn signal electric circuits in regular and uniform fashion to provide substantially equal on and off periods; which is sturdy in construction and reliable in operation, and which is inexpensive to manufacture andinstall.
  • FIG. 1 is a plan view of thesnap acting vane before deformation
  • FIG. 2 shows the vane in the first deformed state
  • FIG. 3 shows the vane in the second deformed state
  • FIG. 4 is a perspective view of one end of the thermally expansible and contractable heater ribbon
  • FIG. 5 is a perspective view of the other end of the heater ribbon attached to the vane
  • FIGS. 6A and 6B show the twosteps involved for securing the high resistance wire to its tenninal
  • FIG. 7 is a front view of the snap-acting flasher switch of this invention.
  • FIG. 8 is its wiring diagram
  • FIG. 9 shows the snap-acting vane with relative dimensions.
  • the snap-acting flasher switch of this invention includes an insulating base 12 formed of suitable insulating material such as Bakelite or the like.
  • the base 12 carries a supporting terminal l3 and the other terminal 8 for high-resistance wire 7.
  • the snap-acting vane l incorporated in the flasher is made of relatively thin electrically conductive spring metal such as beryllium copper or spring steel and is of an elongated rectangular form, with consideration being given to its spring factor, stiffness, temperature coefficient, and the like, in accordance with the desired rate of operation of the snap action.
  • the vane is deformed. This deformation is effected by providing a circular opening A and a laterally extending triangular opening B connected therewith in the face of the vane and by crimping the edge C of the vane adjacent to the base of said triangular opening B. C is the crimped portion. This crimp C shortens the side edge of the vane so as to cause the other side edge thereof to have a greater effective length larger than the crimped side as shown in FIG. 2 edge.
  • one end of said ribbon is folded and spot welded to one side edge of the vane as shown in FIG. 5 while the other end thereof is spot welded to a tab 6 attached to the other side edge of the vane.
  • the vane can .move freely and further, by manipulating the tab 6 with a suitable tool, the tension in the ribbon 5 may be adjusted at will.
  • the vane l is preferably provided with projections 3 and 4 at the top and bottom side edges of the vane respectively.
  • the projection 3 is for spot welding the vane to the supporting terminal l3 and the projection 4 is for attaching a movable contact [4.
  • a stationary contact 15 is attached to the supporting terminal 13 (FIG. 5).
  • the ribbon 5 is heated by a high-resistance insulated wire'7 wrapped around the ribbon and having one end electrically connected thereto. After the other end of said wire is wrapped around the terminal 8 (FIG. 6(l) the terminal is bent double as shown in FIG. 6 (II) so as to effect good contact between said wire and terminal without soldering or welding.
  • the wire 7 being very flne, this is the best way of connecting it to the terminal.
  • the operation of the device will be understood from FIG. 8 and the following description.
  • the unit is inserted into an appropriate receptacle so that the terminal 13 is electrically con nected to one side of a grounded battery 9, terminal 8 is connected to parallel grounded signal lamps 11 through a switch 10.
  • switch 10 When the switch 10 is closed, the current flows as follows;
  • Ribbon 5 now cools and contacts to snap vane 1 back to its stressdeformed condition disengaging contacts 14 and 15 to extinguish lamps l l, and the cycle repeats.
  • Snap-acting flasher switch comprising, an insulated base, a vane-supporting terminal carried by the base, a high-resistance wire terminal carried by the base, an elongated rectangular resilient vane having a combined circular and triangular opening, said vane being prestressed by the provision of crimps in the edge of the vane adjacent the base of the triangular opening and provided with projections at the centers of the upper and lower edges of the vane respectively, the upper projection being secured to the upper end of the supporting terminal and the lower projection being provided with a movable contact, a thermally expansible and contractable ribbon arranged in spaced relation along the vane and stretched obliquely so as to stress the vane against the force of the prestressing thereof to hold the vane inwardly, one end of said ribbon being folded over and secured to one side of the vane and the other end being welded to a tab attached to the opposite side of the vane, a stationary contact attached to said vane supporting terminal, and high resistance wire, one end of

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Thermally Actuated Switches (AREA)
US869068A 1968-11-30 1969-10-24 Snap-acting flasher switch Expired - Lifetime US3609619A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10390868 1968-11-30

Publications (1)

Publication Number Publication Date
US3609619A true US3609619A (en) 1971-09-28

Family

ID=14366509

Family Applications (1)

Application Number Title Priority Date Filing Date
US869068A Expired - Lifetime US3609619A (en) 1968-11-30 1969-10-24 Snap-acting flasher switch

Country Status (4)

Country Link
US (1) US3609619A (fr)
DE (2) DE1958092C3 (fr)
FR (1) FR2024630A1 (fr)
GB (1) GB1232177A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3953817A (en) * 1974-08-05 1976-04-27 Littelfuse, Inc. Flasher device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017222840A1 (de) * 2017-12-15 2019-06-19 Audi Ag Bedienvorrichtung für ein Kraftfahrzeug sowie Kraftfahrzeug

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3953817A (en) * 1974-08-05 1976-04-27 Littelfuse, Inc. Flasher device

Also Published As

Publication number Publication date
DE1958092C3 (de) 1980-01-31
FR2024630A1 (fr) 1970-08-28
GB1232177A (fr) 1971-05-19
DE1958092B2 (de) 1979-05-31
DE6944890U (de) 1970-07-23
DE1958092A1 (de) 1970-06-11

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