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GB1103101A - Improvements in or relating to snap action electric switches - Google Patents

Improvements in or relating to snap action electric switches

Info

Publication number
GB1103101A
GB1103101A GB34150/63A GB3415063A GB1103101A GB 1103101 A GB1103101 A GB 1103101A GB 34150/63 A GB34150/63 A GB 34150/63A GB 3415063 A GB3415063 A GB 3415063A GB 1103101 A GB1103101 A GB 1103101A
Authority
GB
United Kingdom
Prior art keywords
spring
contact
switch
blade
cam
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
Application number
GB34150/63A
Inventor
Tom Bowen
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.)
Smiths Group PLC
Original Assignee
Smiths Group PLC
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 Smiths Group PLC filed Critical Smiths Group PLC
Priority to GB34150/63A priority Critical patent/GB1103101A/en
Priority to FR986606A priority patent/FR1405197A/en
Priority to DES92875A priority patent/DE1282767B/en
Publication of GB1103101A publication Critical patent/GB1103101A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
    • H01H5/04—Energy stored by deformation of elastic members
    • H01H5/18—Energy stored by deformation of elastic members by flexing of blade springs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/32—Thermally-sensitive members
    • H01H37/52—Thermally-sensitive members actuated due to deflection of bimetallic element
    • H01H37/54—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/32—Thermally-sensitive members
    • H01H37/52—Thermally-sensitive members actuated due to deflection of bimetallic element
    • H01H37/54—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting
    • H01H2037/5463—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting the bimetallic snap element forming part of switched circuit

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanisms For Operating Contacts (AREA)

Abstract

1,103,101. Electric switches. SMITHS INDUSTRIES Ltd. 28 Aug., 1964 [29 Aug., 1963; 22 Jan., 1964], Nos. 34150/63 and 2704/64. Heading H1N. A snap-action switch comprises a resilient metal blade 1 having two elongated portions 1a, 1c joined by an integral S-shaped spring 1b maintained in compression by a yoke 5 pivoted at 6 and 7 in holes in the portions la+lc respectively. The contact carried by portion Ic is moved between contacts 3 and 4 by raising or lowering either the spring lb or the portion la which is supported at 2. In the energy regulator of Fig. 3, the resilient blade is a bi-metallic strip 21 whose spring 21b is maintained in compression by a wire 22 secured to the contact carrying portion 21c and to an adjustable support spring 27. The contact 24 normally engages a fixed contact 23 to maintain a circuit through the bi-metal 21. On overheating the blade 2 snaps into engagement with a backstop 14. Contact 23 and backstop 14 are carried by spring blades 25 and 26 respectively which engage cam surfaces 13a+ 13b respectively of a cam 13 adjustably mounted on a shaft 9 screwed into a fixed terminal block 12. The shaft 9 also adjusts the spring 27. The arrangement shown in Fig. 5 is similar to that shown in Fig. 1 except that the supported elongated portion 101 is mounted in a support block 113 that is pivoted about an axis 108 perpendicular to the plane of the drawing. The switch is actuated by rotating the support block 113. The switch of Fig. 5 may be incorporated in a time switch, Figs. 7 and 8, not shown, by providing a wedge-shaped projection on the block 113 which is alternately engaged by two cam surfaces of a time-controlled rotary cam. By making one half of the S-shaped spring stiffer than the other half a retractive snap-action switch may be provided.
GB34150/63A 1963-08-29 1963-08-29 Improvements in or relating to snap action electric switches Expired GB1103101A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB34150/63A GB1103101A (en) 1963-08-29 1963-08-29 Improvements in or relating to snap action electric switches
FR986606A FR1405197A (en) 1963-08-29 1964-08-28 Offset snap action switch
DES92875A DE1282767B (en) 1963-08-29 1964-08-28 Electrical snap switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB34150/63A GB1103101A (en) 1963-08-29 1963-08-29 Improvements in or relating to snap action electric switches

Publications (1)

Publication Number Publication Date
GB1103101A true GB1103101A (en) 1968-02-14

Family

ID=10362011

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34150/63A Expired GB1103101A (en) 1963-08-29 1963-08-29 Improvements in or relating to snap action electric switches

Country Status (3)

Country Link
DE (1) DE1282767B (en)
FR (1) FR1405197A (en)
GB (1) GB1103101A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2126012A (en) * 1982-08-24 1984-03-14 Jaeger Snap-acting electric contact

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR93084E (en) * 1967-03-16 1969-02-07 Crouzet Sa Snap action switch.
DE3604765C1 (en) * 1986-02-14 1987-10-29 Swf Auto Electric Gmbh Electrical switch, in particular for motor vehicles

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE587051C (en) * 1929-07-16 1933-10-28 Stotz Kontakt Gmbh Thermal switch
US1919327A (en) * 1932-06-06 1933-07-25 Trumbull Electric Mfg Co Thermostatic switch
US2000398A (en) * 1932-07-05 1935-05-07 Clarence R Laubenfels Thermostatic switch
US1960020A (en) * 1933-03-29 1934-05-22 Burgess Lab Inc C F Snap switch
US2068374A (en) * 1934-05-26 1937-01-19 Trumbull Electric Mfg Co Thermostatic switch
US2417652A (en) * 1943-10-04 1947-03-18 Robertshaw Thermostat Co Snap-action device
USRE23412E (en) * 1945-06-26 1951-09-25 Snap-action electric switch
US2486033A (en) * 1946-02-06 1949-10-25 First Ind Corp Snap acting device
FR958149A (en) * 1946-09-24 1950-03-03
DE814760C (en) * 1948-07-27 1951-09-27 Philips Nv Switches, in particular for use in electric record players
DE915955C (en) * 1950-10-03 1954-08-02 Karl Fischer Electrical snap switch
GB715489A (en) * 1951-12-10 1954-09-15 Marconi Wireless Telegraph Co Improvements in or relating to e.h.t. systems
AT221157B (en) * 1959-12-11 1962-05-10 Herbert Baumer Electric switch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2126012A (en) * 1982-08-24 1984-03-14 Jaeger Snap-acting electric contact

Also Published As

Publication number Publication date
FR1405197A (en) 1965-07-02
DE1282767B (en) 1968-11-14

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