US3098905A - Snap-action switch - Google Patents

Snap-action switch Download PDF

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Publication number
US3098905A
US3098905A US146608A US14660861A US3098905A US 3098905 A US3098905 A US 3098905A US 146608 A US146608 A US 146608A US 14660861 A US14660861 A US 14660861A US 3098905 A US3098905 A US 3098905A
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US
United States
Prior art keywords
cover
coil spring
switch
blade
snap
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
US146608A
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English (en)
Inventor
Fred N Anderson
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.)
Cherry Corp
Original Assignee
Cherry Electrical Products 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 to NL125735D priority Critical patent/NL125735C/xx
Priority to NL283734D priority patent/NL283734A/xx
Application filed by Cherry Electrical Products Corp filed Critical Cherry Electrical Products Corp
Priority to US146608A priority patent/US3098905A/en
Priority to GB41724/61A priority patent/GB975732A/en
Priority to DEC27870A priority patent/DE1246083B/de
Priority to FR908703A priority patent/FR1334642A/fr
Application granted granted Critical
Publication of US3098905A publication Critical patent/US3098905A/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
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/26—Snap-action arrangements depending upon deformation of elastic members
    • H01H13/28—Snap-action arrangements depending upon deformation of elastic members using compression or extension of coil springs

Definitions

  • a particular object of my invention is in the provision in a snap action switch of this character of an actuator that has a positive path to travel, and which engages a tension member at a point immediately adjacent to the pivotal connection of the movable switch blade and its supporting member.
  • a further object of this invention is in the provision in a snap action switch of this character of a movable switch blade that is formed so as to provide a greater contact area with its terminal pivot post thus assuring a greater current conductive connection therewith.
  • a still further object of this invention is in the provision in a snap action switch of this character of a movable blade tensioning member in the form of a coil spring, wherein the coils of such spring are disposed entirely to one side of the terminal pivot post, with the coils of the spring in the path of the switch actuator.
  • the coil spring as a tensioning member for the movable blade, is provided with an elongated neck terminating into a hook which by the construction of the movable blade has a positive connection therewith.
  • Another important object of my invention is in the provision in a switch of this character of an arrangement of parts which properly locate the tension member in a pre-determined position with respect to the movable switch blade and the switch blade actuator.
  • Yet another object of my invention is in the provision in a switch of this character of a cantilever movable switch blade that will move relative to -a stationary contact with a rocking motion which will effect a wiping action between electrical contacts.
  • Yet another object of my invention is in the provision in a switch of this character of an arrangement of parts that is economical in manufacture, simple in assembling, and positive in its operation.
  • FIG. 1 is a perspective view of my improved snap action switch.
  • FIG. 2 is a side elevational view of my switch with the cover removed.
  • FIG. 3 is a side elevational view of the interior surface of the cover for the snap action switch.
  • FIG. 4 is aside elevational view of my switch showing the parts thereof in an actuated position.
  • FIG. 5 is a perspective view of the internal parts of my improved snap action switch.
  • FIG. 6 is a detailed sectional view taken on line 2-2 of FIG. 2, and
  • FIG. 7 is a fragmentary perspective view of a portion of the cover.
  • My improved snap action switch includes a housing generally shown as at 10. This housing is provided with a complementary side cover 11 Within the housing 10 there is a hollowed out cavity generally indicated as at 12. The side cover 11 is provided with a complementary partial cavity indicated as at 13. Correctly positioned within the cavities Hand 13 of the housing to and cover 11 is the switch mechanism of this invention.
  • the switch mechanism includes a pair of spaced apart fixed contact bearing terminals 14 and 14. These terminals 14 and 14 extend through slots formed in the end wall 15 of the housing 10. Each of the terminals 14 and 14' have their corresponding opposite edges notched as at 16 and 17 as viewed in FIG. 5. The notches formed in the one corresponding edge of each of the terminals 14- and 14 fit into the slots formed in the end wall 15 of the housing 10. The notches 17 formed in the corresponding opposite edges of the terminals 14 and 14' receive the end wall 18 of the cover 11.
  • the ends of the terminals 14 and 14 which are positioned within the cavities 12 and 13 of the body 10 and cover 11 are generally T-shaped as at 19.
  • the T-shaped ends 19 of the terminals 14 and :14 providing laterally extending lugs 19 which fit into horizontally aligned recesses 2i and 21 formed in the walls of the cavities 12 and 13, respectively. It is thus readily seen that between the T-shaped ends 19 and the side notches 16 and 17 the terminals 14 and 14' will be correctly positioned within the switch casing.
  • terminal pivot post 24 is provided as part of the switch mechanism and it extends into the cavity 12 of the housing 10 through the bottom wall 25 thereof.
  • the terminal pivot post 24, like the terminals 14 and 14 has its opposite edges notched as at 26 and 27, with the notch 26 positioned in a slot 28 formed in the bottom wall 25' of the housing 10, and the notch 27 formed to receive the bottom wall 29 of the cover 11.
  • the inner confronting walls of the cavities 12 and 13 are each provided with aligned recesses 311 and 31 which are adapted to receive oppositely extending lugs 32 carried by the terminal pivot post 24, only one of such lugs 32 being shown.
  • the end of the terminal pivot post 24 which is positioned within the casing of the switch is bifurcated to provide spaced apart pivot post arms 33 and 34.
  • One face as well as opposite corresponding edges of each of the posts 33 and 34 are provided with V-notches 35 as seen in FIG. 5.
  • a substantially flat switch blade 36 Formed from a spring material is a substantially flat switch blade 36.
  • the body of the switch Iblade 36 is divided into equal portions by a partially extending narrow slot 37.
  • the free ends of these equal portions of the isody of the switch blade 36 are provided with corresponding shoulders 38.
  • the arrangement is such that the shoulders 38 as well as the ends 39 of the equal portions of the body of the movable switch blade 36 on either side of the slot 37 are positioned into pivotal contact with the V-notches 35 formed in the faces and opposite sides of the pivot posts 33 and 34.
  • the switch blade 36 has formed therein a diagonal slot 40 which extends from one longitudinal edge of the blade 36 in the direction of and terminates short of the slot 37. However, the slot 40 terminates at a point adjacent to and in the plane of the slot 37.
  • a cantilever type blade is formed which has a resilient end 41 which carries thereon a contact 42.
  • the switch blade 36 is held in contact with the pivot posts 33' and 34- under tension by a tension member in the form of a coil spring 43.
  • One end of the coil spring provides an elongated neck 44 which terminates into a book 45 which extends through and is in contact with the base of the diagonal slot 40.
  • the opposite end of the coil spring 43 provides a reversely formed hook member 46 which is adapted to be hooked upon a spring pin 47. It should be noted that when the heretofore described parts are assembled within the casing of the switch the convolutions of the coil spring lie entirely to one side of the pivot posts 33 and 34 directly in line of a switch actuator 48. The long neck A- of the tension member 43 extends between the pivot posts 33 and 34 and lies freely within the confines of the slot 37 formed in the blade 36.
  • the opposite end wall 49 of the body It ⁇ is provided with a notched out portion which is of a depth less than the cavity 12 formed in the body It).
  • the base of the notched-out portion 50 is provided with a circular pit 51 in which is seated one end of the spring pin 47.
  • the cover 11 adjacent one end 52 thereof is provided with a corresponding aligned recess 53 into which freely projects the opposite end of the spring pin 47 when the cover 11 is mounted on the body It) as shown in FIG. 1.
  • the end 52 of the cover 11 provides a lateral extension 54 which provides a rear wall for the notched-out portion 50 of the end wall 49 of the body It) when the cover is mounted thereon.
  • the cover 11 adjacent the recess 53 inwardly of the lateral extension 54 is provided with spaced apart bosses 55. These bosses 55 project inwardly of the notched-out portion 5t) and lie above and below the spring pin 47 and maintain the hook 46 of the tension member 43 on the spring pin 47.
  • the cover 11 on its inner face adjacent the bosses 55 provides an elongated extending lug 56.
  • This lug 56 is adapted to lie against one side of the coils of the tension member 43 so as to maintain the same in a predetermined position within the casing of the switch.
  • the lug 56 is elongated so that it will always have a surface in abutment with the coils of the spring even as the same is moved by the actuator 48 into the position shown in FIG. 4.
  • the body in the top wall thereof is provided with a passage 5*? which communicates with the cavity 12.
  • a passage 5*? which communicates with the cavity 12.
  • the actuator 43 is formed in a substantially L-shape with the lower corner thereof notched out as at 59, and with a portion 60 of the base leg thereof extending in a depending plane with respect thereto.
  • a laterally extending guide 61 is carried by the depending portion 60 as seen in FIG. 5.
  • This guide 61 is adapted to ride in a groove 62. formed in the side wall of the body *10.
  • an offset foot portion 65 thereof will engage the tension spring 43 at a point adjacent the bifurcated ends of the pivot posts 33 and 34 as seen in FIGS. 2 and 4, and thus be laterally distant from the long axis of movement of such actuator, for a purpose hereinafter explained.
  • the actuator 48 When the actuator 48 moves inwardly of the body 10 in its controlled path, it will depress the tension member 43 below the point of pivotal connection between the blade 36 and the pivot posts 33 and 34, creating increased tension in the blade 36 causing the same to move with a snap action into the position shown in FIG. 4 where the contact 42 of the blade 36 engages contact 23 of the fixed terminal member 14. As the blade 35 is of a cantilever configuration the contact 42. will actually rock on the contact 22. before the blade 36 moves with a snap action into its actuated position.
  • a positive action of the blade 36 results from the fact that the tension member 43 is actuated through the pressure of the foot 65 of the switch actuator 48 engaging a portion of the tension member 43 at a point as close as possible to the pivotal connection of the blade 36 with the pivot posts 33 and 34, thus reducing the amount of deformation of the spring necessary to actuate the blade.
  • This also has a direct bearing on the amount of external pressure required to cause movement of the actuator relative to the spring.
  • FIG. 3 it will be noted that adjacent the corner of the cover 11 defined by the walls 18 and 29 thereof there is formed on the exposed surface a laterally extending rib: -66.
  • This rib 65 is adapted to sit in a mar- 'ginal channel 67 formed in the confronting exposed surface of the body 1h.
  • the marginal rib 6:5 is interrupted by a passage 68 which receives the notched out portion 17 of the fixed terminal 14 when the cover is mounted in a closing position upon the body 10.
  • a snap-action switch housing having a body normally open at one side and a cover therefor, with said body and cover providing an interior cavity containing a snap-acting mechanism including (a) an elongated coil spring,
  • said coil spring having one end connected to a movable switch blade and its opposite end attached to a supporting means carried by said housing,
  • said compartment comprising a notched-out opening formed in one end wall of said body of a depth less than said cavity formed therein,
  • a snap-action switch housing as defined by claim 1 wherein said means for closing said notched-out opening comprises laterally extending projections integrally formed on said cover for insertion into said notched-out opening on three sides of said supporting means for maintaining said coil spring thereon.
  • a snap-action switch housing having a body normally open at one side and a cover therefor, with said body and cover providing an interior cavity containing a snap-acting mechanism including (a) an elongated coil spring,
  • said coil spring having one end connected to a movable switch blade and its opposite end attached to a pin carried by said housing
  • said compartment comprising a notched-out opening formed in one end wall of said body of a depth less than said cavity formed therein,
  • said closing means comprising laterally extending projections integrally formed on said cover for insertion into said notched-out opening on three sides of said pin for maintaining said coil spring thereon.

Landscapes

  • Push-Button Switches (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Switch Cases, Indication, And Locking (AREA)
US146608A 1961-10-20 1961-10-20 Snap-action switch Expired - Lifetime US3098905A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
NL125735D NL125735C (enrdf_load_html_response) 1961-10-20
NL283734D NL283734A (enrdf_load_html_response) 1961-10-20
US146608A US3098905A (en) 1961-10-20 1961-10-20 Snap-action switch
GB41724/61A GB975732A (en) 1961-10-20 1961-11-22 Snap action electric switch
DEC27870A DE1246083B (de) 1961-10-20 1962-09-06 Laengsgeteiltes Gehaeuse fuer elektrische Schnappschalter
FR908703A FR1334642A (fr) 1961-10-20 1962-09-15 Interrupteur à action instantanée

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US146608A US3098905A (en) 1961-10-20 1961-10-20 Snap-action switch

Publications (1)

Publication Number Publication Date
US3098905A true US3098905A (en) 1963-07-23

Family

ID=22518160

Family Applications (1)

Application Number Title Priority Date Filing Date
US146608A Expired - Lifetime US3098905A (en) 1961-10-20 1961-10-20 Snap-action switch

Country Status (4)

Country Link
US (1) US3098905A (enrdf_load_html_response)
DE (1) DE1246083B (enrdf_load_html_response)
GB (1) GB975732A (enrdf_load_html_response)
NL (2) NL125735C (enrdf_load_html_response)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3221094A (en) * 1963-02-25 1965-11-30 Cherry Electrical Prod Housing assembly for an electrical device
US3221131A (en) * 1963-11-12 1965-11-30 Illinois Tool Works Push button switch for individual use or in an assembly of similar switches
US3221130A (en) * 1963-09-03 1965-11-30 Clary Corp Plunger operated snap-action electrical switch
US3278716A (en) * 1965-09-07 1966-10-11 Sensitive Snap Switch Corp Protective switch assembly
US3328544A (en) * 1964-12-14 1967-06-27 Gen Motors Corp Hot wire thermal switch with calibration means for the contacts
US3350521A (en) * 1964-12-03 1967-10-31 Cutler Hammer Inc Miniature switches of the rocking contact type
US3405243A (en) * 1967-01-12 1968-10-08 Cherry Electrical Prod Actuating lever for a switch
US3407276A (en) * 1966-11-23 1968-10-22 Illinois Tool Works Snap action switch having improved terminal construction
US3866008A (en) * 1973-01-29 1975-02-11 Angelo Teruzzi Composable switch device
US4032734A (en) * 1973-11-23 1977-06-28 B/K Patent Development, Inc. Snap-ating mechanisms
US4294004A (en) * 1976-03-30 1981-10-13 General Electric Company Method of assembling a switch and terminal assembly
US4426770A (en) 1978-03-06 1984-01-24 General Electric Company Method of assembling a switch and terminal assembly and mounting it to a dynamoelectric machine
US4431884A (en) * 1982-08-09 1984-02-14 Gulf & Western Manufacturing Company Snap action switch
EP3166121A1 (en) 2015-11-03 2017-05-10 C&K Components SAS Electrical pushbutton switch
US10304643B1 (en) 2018-02-28 2019-05-28 CoActive Technologies, LLC Single-pole, single-throw detect switch

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3545670A1 (de) * 1985-12-21 1987-06-25 Teves Gmbh Alfred Schalter mit schlagartiger umschaltung
GB2185854B (en) * 1986-01-16 1989-10-18 Otehall Limited Electric switches

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1944522A (en) * 1930-06-21 1934-01-23 Edwards And Company Inc Push button switch construction
US2404874A (en) * 1944-08-11 1946-07-30 Maurice J Wohl Electric snap switch
US2592660A (en) * 1949-08-19 1952-04-15 Harold W Crumley Plunger type cam actuated switch
US2789172A (en) * 1953-05-26 1957-04-16 Singer Mfg Co Snap-acting switch mechanisms
AT204624B (de) * 1958-04-25 1959-08-10 Richard Fonovits Kommanditgese Mikroschalter
FR1196660A (fr) * 1958-06-05 1959-11-25 Contacteur à action brusque

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE550695A (enrdf_load_html_response) * 1951-03-30
US2840657A (en) * 1955-03-23 1958-06-24 Illinois Tool Works Two circuit snap switch
FR1275855A (fr) * 1959-12-11 1961-11-10 Interrupteur électrique
AT280775B (de) * 1968-04-03 1970-04-27 Prontor Werk Gauthier Gmbh Photographischer Objektivverschluß

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1944522A (en) * 1930-06-21 1934-01-23 Edwards And Company Inc Push button switch construction
US2404874A (en) * 1944-08-11 1946-07-30 Maurice J Wohl Electric snap switch
US2592660A (en) * 1949-08-19 1952-04-15 Harold W Crumley Plunger type cam actuated switch
US2789172A (en) * 1953-05-26 1957-04-16 Singer Mfg Co Snap-acting switch mechanisms
AT204624B (de) * 1958-04-25 1959-08-10 Richard Fonovits Kommanditgese Mikroschalter
FR1196660A (fr) * 1958-06-05 1959-11-25 Contacteur à action brusque

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3221094A (en) * 1963-02-25 1965-11-30 Cherry Electrical Prod Housing assembly for an electrical device
US3221130A (en) * 1963-09-03 1965-11-30 Clary Corp Plunger operated snap-action electrical switch
US3221131A (en) * 1963-11-12 1965-11-30 Illinois Tool Works Push button switch for individual use or in an assembly of similar switches
US3350521A (en) * 1964-12-03 1967-10-31 Cutler Hammer Inc Miniature switches of the rocking contact type
US3328544A (en) * 1964-12-14 1967-06-27 Gen Motors Corp Hot wire thermal switch with calibration means for the contacts
US3278716A (en) * 1965-09-07 1966-10-11 Sensitive Snap Switch Corp Protective switch assembly
US3407276A (en) * 1966-11-23 1968-10-22 Illinois Tool Works Snap action switch having improved terminal construction
US3405243A (en) * 1967-01-12 1968-10-08 Cherry Electrical Prod Actuating lever for a switch
US3866008A (en) * 1973-01-29 1975-02-11 Angelo Teruzzi Composable switch device
US4032734A (en) * 1973-11-23 1977-06-28 B/K Patent Development, Inc. Snap-ating mechanisms
US4294004A (en) * 1976-03-30 1981-10-13 General Electric Company Method of assembling a switch and terminal assembly
US4426770A (en) 1978-03-06 1984-01-24 General Electric Company Method of assembling a switch and terminal assembly and mounting it to a dynamoelectric machine
US4431884A (en) * 1982-08-09 1984-02-14 Gulf & Western Manufacturing Company Snap action switch
EP3166121A1 (en) 2015-11-03 2017-05-10 C&K Components SAS Electrical pushbutton switch
US9947492B2 (en) 2015-11-03 2018-04-17 C&K Components S.A.S. Electrical pushbutton switch
US10211007B2 (en) 2015-11-03 2019-02-19 C&K Components S.A.S. Electrical pushbutton switch
US10304643B1 (en) 2018-02-28 2019-05-28 CoActive Technologies, LLC Single-pole, single-throw detect switch

Also Published As

Publication number Publication date
GB975732A (en) 1964-11-18
NL125735C (enrdf_load_html_response)
NL283734A (enrdf_load_html_response)
DE1246083B (de) 1967-08-03

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