US3711808A - Snap operating device - Google Patents

Snap operating device Download PDF

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Publication number
US3711808A
US3711808A US00158242*A US3711808DA US3711808A US 3711808 A US3711808 A US 3711808A US 3711808D A US3711808D A US 3711808DA US 3711808 A US3711808 A US 3711808A
Authority
US
United States
Prior art keywords
vane
tractive member
bosses
longitudinal axis
expansible
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
US00158242*A
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English (en)
Inventor
A Kamiyama
K Kikuchi
K Ishida
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.)
Mitsuba Corp
Original Assignee
Mitsuba Corp
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
Priority claimed from JP10641270U external-priority patent/JPS5139504Y1/ja
Application filed by Mitsuba Corp filed Critical Mitsuba Corp
Application granted granted Critical
Publication of US3711808A publication Critical patent/US3711808A/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 snap operating vane of this invention constituting an automatic blinker particularly adapted to the control of automobile signals is characterized by a plurality of parallel bosses being aligned at predetermined positions and having the center lines forming a certain angle with the longitudinal axis of an electric heating belt, said electric heating belt being secured to the vane through slots in substantial extended elements of said vane where the longitudinal axis of said slot and extended elements are coincidental with the axis of said belts.
  • This invention relates to a structure of a snap operating vane.
  • a snap operating vane In a general snap operating vane as explained later with reference to the accompanying drawings, two curves or bosses are arranged in series along a diagonal on a rectangular vane evading the center of the vane thereby to effect stress deformation.
  • An electric heating belt which performs expansion and contraction by the temperature variation is secured to said vane along the line including previously provided bosses at the forward end of conductive metal fittings on the rear surface of a lower point of the central position of the vane. The lower end of said conductive metal fittings being fitted to the insulative base.
  • the conventional snap operating vane having such construction is used in types of circuits, i.e. series type and parallel type. The desired features of a snap operating device are described:
  • the electric heating belt must be long.
  • the second object of the present invention resides in that the projected parts at both ends of the snap operating vane are bent at their V-slot elements thereby to facilitate the precise bending of the projected elements about a line perpendicular to the longitudinal axis of said assembled electric heating belt.
  • the third object of the present invention resides in that a plurality of parallel bosses for stress deformation are provided in the vane, and by adjusting spaces between said parallel bosses the vane of the material having the same thickness can be adapted to various bulb loads in wide ranges.
  • the fourth object of the present invention resides in that, particularly in a parallel type direction-indicating blinker the gap produced upon opening and closing the contact as will be mentioned later is larger than-that of the conventional one.
  • the fifth object of the present invention resides in that the center lines of said plurality of parallel bosses for stress deformation are arranged forming a certain angle with the longitudinal axis of the electric heating belt, and the line connecting the inner ends of said bosses is perpendicular to the with the longitudinal axis of the electric heating belt, whereby upon the bending of the vane excessive force is not applied to the vane and the electric heating belt.
  • FIG. 2 is a sectional view taken along line 22 of FIG. 1;
  • FIG. 3 is a circuit diagram of a series type directionindicating blinker which has heretofore been known
  • FIG. 4 is a circuit diagram of a parallel type direction-indicating blinker which has heretofore been known
  • FIG. 5 is a front elevation showing one embodiment of a snap operating vane according to the present invention.
  • FIG. 6 is a sectional view taken along line 66 of FIG. 5;
  • FIG. 7 is a front elevation showing another embodiment of the present invention.
  • FIG. 8 is a sectional view taken along line 8-8 of FIG. 7.
  • This invention relates to a snap operating vane.
  • a snap operating vane in order to cause a rectangular vane 1 made of a conductive resilient material to precisely carry out a snap operation, two curves or bosses 2 are arranged on the surface of said vane 1 in series along a diagonal so as to evade the center of the vane 1 thereby to carry out stress deformation.
  • An electric heating belt 3 for carrying out expansion and contraction by the variation of heat is extended over the bosses 2 and is secured to said. vane l for bending said vane 1.
  • the snap operating vane is secured to the forward end of conductive metal fittings fitted on the insulative base plate on the rear surface in the vicinity C at the lower part of the central position of the vane 1 as shown in FIG. 1. This is to achieve anti-vibration property, since antivibration property is deteriorated at a point spaced too far from the center, for example, in the vicinity of a point designated by D.
  • a contact 4 is provided on the center of the electric heating belt 3, said contact 4 being constantly in contact with said electric heating belt 3 and arranged in the circuit shown in FIG. 3.
  • a direction-indicating switch 5 when fallen in either left or right direction, a current flows from a battery 6 as shown by arrow to instantly light a bulb 7, and simultaneously the electric heating belt 3 is heated and expanded by said current.
  • belt 3 has expanded a certain amount, the vane l is reversed to open the contact 4, whereby the bulb 7 is put off. When said bulb 7 is put off.
  • a contact 8 opened constantly is provided on the rear surface of the center E of the vane 1.
  • An insulated iron wire 9 for heating is wound around the electric heating belt 3, and its circuit is constructed as shown in FIG. 4. More specifically, when a directionindicating switch is fallen in either left or right direction, a current flows from a battery 11 in the direction shown by arrow to heat and expand the electric heating belt 3 and a heating wire. The vane l is reversed at a certain time point so as to bring into contact with the contact 8, whereupon a large current flows in the direction shown by dotted arrow to light a bulb 12.
  • the snap operating vane requires the following design criteria:
  • the electric heating belt 3 be as long as possible (in the case where the material used is predetermined and the size of the vane is also predetermined).
  • Reference numeral designates a vane whose main part 20a is formed into a circular shape, and projected elements 20b are provided in opposite to each other on the center line Z provided at an optional angle of less than 45 with respect to the center line X. These projected elements 20 substantially extend from the circumference of vane 20 by 20 to 30 percent of the vane diameter. Said projected part 20b has a groove or slot 21 and is'bent downward loosely.
  • Reference numeral 22 designates an electric heating belt or expansible tractive member which is bent in the vicinity of both ends so that it is superimposed on the projected part 20b, and its end is further bent downward at an angle of 90.
  • the electric heating belt 22 flexibly bends the vane 20, and both ends thereof are fitted in the groove 21 of the projected part 20b and extended over the vane 20.
  • the projected part 20b has a parallel width with respect to the center line Z or a tapered width decreasing or increasing difinitely toward the external direction, and if necessary, a groove in which the electric heating belt 22 is fitted may be provided.
  • Reference numeral 23 designates a fixed portion due to spot welding or the like.
  • the snap-operating vane according to the present invention having the aforementioned construction is employed in the same manner as the conventional example.
  • the device according to the present invention has the aforementioned structure, it has such effects as will be described hereinbelow.
  • the groove 21 is provided in the projected part 20b and an electric heating belt 22 is a junction fitted in said groove 21, the quality is stable in the production and improvements in workability and durability can be obtained.
  • the device according to the present invention has a plurality of parallel bosses 24 for stress deformation, stress deformation can be adjusted by adjusting the space between said parallel bosses 24 and therefore a blinker adaptedto a variety of load capacitiescan be manufactured by same plate thickness can be manufactured. When the space between the bosses 24 is made large, stress after the deformation becomes large accordingly.
  • the gap for switching contacts is selected to be wider as compared with devices that curve on the center line Z, because the point of stress deformation becomes equivalent to the center line of the boss 24 at the right-hand lower part of the center line Y (when a fixed point of the vane 20 is denoted by F and that of the contact by G).
  • the conventional snap operating vane is shown in FIG. 1 and has following:
  • FIGS. 7 and 8 Another embodiment, as shown in FIGS. 7 and 8, provides a snap operating vane which eliminates the aforementioned defects.
  • Reference numeral 30 designates a vane whose main body 30a is rectangular (in some cases, it may be circular or oval), and a projected element 30b having a groove 31 is provided at the diagonal portion. Said projected part 30b being gently curved downwardly and substantially extend from the rectangular vane by 20 to 30 of the diagonal.
  • Reference numeral 33 designates bosses projected on the surface of the main body 300 of the vane 30 and evaded the center on the diagonal Z which is provided with the projected part 30b Two pairs of bosses 33 are arranged so that each boss is parallel to the center line X as shown with one-dotted chain line of FIG. 7, and the inner ends thereof being arranged at both sides of the diagonal Z and the line connecting both inner ends is perpendicular to the line Z.
  • Reference numeral 32 designates an electric heating or expansible tractive member which is bent so that it overlaps with the projected part 30b in the vicinity of both ends, and both ends in the belt are bent so that they are fitted in the groove 31, and are spot welded at 34.
  • Reference numeral 35 designates a V-slot which facilitates the bending of the extended elements 30b and assures that the crease of the bend will be perpendicular to the longitudinal axis of the heating belt 32.
  • the projected part can be easily bent perpendicularly to the diagonal Z. Since it has a predetermined width, the slide, etc. while bending operation can be prevented and the uniformity of the quality can be maintained. Furthermore, a V-slot 35 can be provided for obtaining the bending position, if necessary.
  • the electric heating belt 32 is coincident with a groove 31 thereby to easily obtain the normal position. Even when the groove 31 is not provided, it is sufficient if said electric heating belt is coincident with the center of the width of projected part 30b, and therefore the position can be secured by eyesight.
  • a snap operating device characterized in that said device comprises a vane made of resilient material having generally a single plane and an expansible tractive member secured to said vane at its both ends, said vane being bent and held in a stress-deformed state by the contracted state of said tractive member, said vane includes elements projecting substantially therefrom and being diagonally opposed, and said projected elements include hooking grooves for receiving said expansible tractive members ends.
  • a snap operating device characterized in that said device comprises a vane made of a resilient material having generally a single plane and an expansible tractive member secured to said vane at its both ends, said vane being bent in a contracted state of said tractive member and maintained in a stress-deformed state, said vane includes projected parts extending substantially from both ends of said vane by 20 to 30 percent of said vanes diagonal, and hooking grooves are provided at the innersides of said projected parts, and slots are provided at the outsides of said projected parts to regulate bending of said project parts relative to said vane.
  • a snap operating device characterized in that said device comprises a vane made of a resilient material having generally a single plane and an expansible tractive member secured to said vane at its both ends, said vane being bent in a contracted state of said tractive member and maintained in a stress-deformed state around the line forming a certain angle against itself and further in a tensed state, and projected parts are provided at both ends of said vane extending substantially from said vane, and hooking grooves are provided in said projected part, said vane includes a plurality of substantially parallel bosses whose parallel axis form an acute angle with the longitudinal axis of said expansible tractive member, said bosses being arranged in two sets symmetric to the center of said vane, and being arranged so that a line tangential to the inner ends ofa set of bosses is perpendicular to the longitudinal axis of said tractive member.
  • a snap operating device characterized in that said device comprises a vane made of a resilient material having generally a single plane and an expansible tractive member secured to said vane at its both ends, said vane being bent in a contracted state of said tractive member and maintained in a stress-deformed state, said vane includes a plurality of bosses each of whose longitudinal axis being substantially parallel and forming a certain angle with the longitudinal axis of said tractive member, said bosses being arranged in two sets symmetric to the center of said vane, and being arranged so that lines connecting inner ends of the bosses of a set are perpendicular to the longitudinal axis of said tractive member.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
US00158242*A 1970-10-28 1971-06-30 Snap operating device Expired - Lifetime US3711808A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP10641270U JPS5139504Y1 (enrdf_load_stackoverflow) 1970-10-28 1970-10-28
JP9431070 1970-10-28

Publications (1)

Publication Number Publication Date
US3711808A true US3711808A (en) 1973-01-16

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ID=26435579

Family Applications (1)

Application Number Title Priority Date Filing Date
US00158242*A Expired - Lifetime US3711808A (en) 1970-10-28 1971-06-30 Snap operating device

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US (1) US3711808A (enrdf_load_stackoverflow)
FR (1) FR2113300A5 (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3768065A (en) * 1971-09-09 1973-10-23 Kearny Nat Inc Electric connector and method of forming a connection
US3864654A (en) * 1972-07-25 1975-02-04 Lucas Electrical Co Ltd Electrical switches
US4001747A (en) * 1975-06-23 1977-01-04 Ideal Corporation Flasher switch vane structure

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3218415A (en) * 1960-12-20 1965-11-16 Tung Sol Electric Inc Thermally actuated snap action device
US3305654A (en) * 1964-09-18 1967-02-21 Tung Sol Electric Inc Signal flasher having a heater mounted on a mandril separate from, but adjacent to the expansible pull means
US3349205A (en) * 1965-04-26 1967-10-24 Wagner Electric Corp Snap action device
US3518598A (en) * 1968-03-11 1970-06-30 Niehoff & Co C E Snap action electric switch

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3218415A (en) * 1960-12-20 1965-11-16 Tung Sol Electric Inc Thermally actuated snap action device
US3305654A (en) * 1964-09-18 1967-02-21 Tung Sol Electric Inc Signal flasher having a heater mounted on a mandril separate from, but adjacent to the expansible pull means
US3349205A (en) * 1965-04-26 1967-10-24 Wagner Electric Corp Snap action device
US3518598A (en) * 1968-03-11 1970-06-30 Niehoff & Co C E Snap action electric switch

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3768065A (en) * 1971-09-09 1973-10-23 Kearny Nat Inc Electric connector and method of forming a connection
US3864654A (en) * 1972-07-25 1975-02-04 Lucas Electrical Co Ltd Electrical switches
US4001747A (en) * 1975-06-23 1977-01-04 Ideal Corporation Flasher switch vane structure

Also Published As

Publication number Publication date
FR2113300A5 (enrdf_load_stackoverflow) 1972-06-23

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