US1842264A - Electric switch - Google Patents

Electric switch Download PDF

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Publication number
US1842264A
US1842264A US315783A US31578328A US1842264A US 1842264 A US1842264 A US 1842264A US 315783 A US315783 A US 315783A US 31578328 A US31578328 A US 31578328A US 1842264 A US1842264 A US 1842264A
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US
United States
Prior art keywords
button
switch
projections
spindle
depression
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
US315783A
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English (en)
Inventor
Greter Carl
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Individual
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Individual
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Publication date
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Publication of US1842264A publication Critical patent/US1842264A/en
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    • 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
    • H01H13/50—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member
    • H01H13/56—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member the contact returning to its original state upon the next application of operating force
    • H01H13/58—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member the contact returning to its original state upon the next application of operating force with contact-driving member rotated step-wise in one direction
    • H01H13/585—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member the contact returning to its original state upon the next application of operating force with contact-driving member rotated step-wise in one direction wherein the movable contact rotates around the axis of the push button

Definitions

  • This invention comprises improvements in electric switches and is concerned with switches of the press-button type suitable for various switching purposes.
  • the principal object of this invention is to provide a press-button switch having a snap action for giving a quick make or a quick break, whereby deterioration of the I switch contacts is avoided.
  • a further object is to devise a switch of the character indicated which is economical to produce and of extremely simple construction in spite of the mechanism introduced for the snap action.
  • Yet another object is to construct a switch of the character indicated wherein the closed contacts remain in engagement during the pressing of the knob or button until the moment of release for the snap break action.
  • an object of the invention is to provide in a press-button switch a comblnation ofa torsional spring and circular action cam surfaces so designed and disposed as to co-operate for the bringing about of the desired snap action at a predetermined moment of release.
  • Figure l is a central vertical section of a switch embodying these improvements, the section being taken on the line AB of Figure 3.
  • Figure 2 is an elevation of the internal parts of the switch, these being displayed by removal of one half of the cover or casing which is seen in vertical section on the line CD of Figure 3. 1
  • Figure 3 is a plan of the switch with the cover and press-button removed.
  • Figure 4 comprises two views. one being an elevation of the upper portion of the switch spindle and the other being a plan thereof.
  • Figure 5 is an iiuted plan of the pressbutton.
  • Figure 6 is a sectional elevation of the cen tral portion of the movable switch member.
  • the switch comprises cover or casing-a secured by screwing on a base 7), a press-butten 0 being depressible into the casing a with guidance forthe depression of the movable switch member d.
  • the means for detachably fixing the spindle e and holding it against revolution need not be described as they may be of any appropriate character.
  • the lower portion of the spindle e is of circular cross section and may be of smaller diameter than the upper portion which is formed with flats at diametrically opposite 0 points, the metal being removed to such an extent that the upper portion of the spindle 6 maybe said to be of approximately oblong cross section, as will be understood from Fig ures 3 and 4.
  • the spindle e is formed with a flange or collar from which project four fingers or star points f. It desired, two fingers f'180 apart could be used in place of four disposed 90 apart as in Figures 3 and 4.
  • the fingers f are bevelled along, one side as will be seen clearly from the end view of one of them in the elevation in Figures 1 and 4.
  • the switch member d is freely revoluble around the lower portion of the spindle e and is pressed upwards against the collar of the star f by means of a spring q.
  • the switch member 03 may be moulded as a disc of insulating material having mounted on its upper surface a ring g of metal, said ring having radial projections at diametrically opposite points on its periphery and such pro ections may constitute the contacts of the sliding member (1 for engagement with the fixed contacts hereinafter referred to.
  • an upstanding hollow cylindrical part b which surrounds the upper portion of the spindle e and has an internal diameter large enough for enabling it to slide over the star member f.
  • the cylindrical part Onits interior surface the cylindrical part it is formed or fitted with four similar and uniformly spaced teeth 11 which are of triangular or ratchet tooth shape one edge being vertical and the other inclined. If the star member f has four points as shown, each of the teeth 71 will engage with one of the points of the star member, which will prevent the teeth '6 and ⁇ therefore the cylindrical part and movable member (1 from rotating whilst such teeth remain in engagement.
  • the central inner part n of the press button extends downwards to the spindle e and is formed with a bore 7; which in section or plan, as seen in' Figure 5, is of what may be called a double segmental shape.
  • the bore p is of-such a shape as to enable it to slide over the upper portion of the'spindle e which, in the example illustrated, is of a somewhat oblong cross section, the outer portions of the section of the bore p being enlarged so as to permit the part it and button 0 to be free to turn through a limited angle relatively to the spindle 6.
  • This limited turning of the button is performed alternately with and against the torsional action of the spring Z and it will now be understood 'how the spindle e arrests the turning of the button so that the projections m lie directly above the projectionsla when the button 0 is in its outward position as already stated.
  • the limited turning aforesaid is of such amplitude as to enable the. projections m to slip past the projections is in circumstances to be explained.
  • the cylindrical wall of the button 0 extends downwards below the lower ends of the projections m and that the cylindrical part h of the member d extends upwardly abovethe upper ends of the projections 71.
  • the internal diameter of the button 0 is greater than the external diameter of the cylindrical part b; to the extent of about the thickness'of the projections m and 70 it will be understood that there is mutual guidance between the parts a and h during the sliding movements.
  • the upstanding switch contactsr and 8 On the base 6 are the upstanding switch contactsr and 8, these contacts being blades fixed by terminal screws t and u and having upper vertical and lparallel.p'prtions which may be bent over at t e top to engage the projections of the conductor ring above described. Owing to the form and of these spring contacts r and a it is possible for the member d to descend for a certain distance without the breaking of contact between the rin g and the contacts r and 5 as will be clear ron'i Figure 1.
  • the spring Z returns the same to the outward position and during this ascent of the button the projections m will slide past the projections k and the said inclined edges of such projections will produce a cam action resulting in a limited turning of the button 0 relatively'to the spindle e and member (1.
  • the said spring'l will be stressed torsionally'by the turning of the button under the camming action of the projections m and k.
  • Press button switch comprising in combination a'hollow press button, a fixed spindle, a. switch member slidable upon and rotatable about said spindle, guide means operative for guiding said'button on said spindle and adapted for permitting limited rotation of said button relatively to said spindle combined abutment and cam devices upon said' button and upon said switch memb r said" devices being co-operative for depressing said member during the initial portion of the depression of said button and for subsequent- 1y releasing said member for snap action,-
  • snap action mechanism operative for rapidly revolving said member through a-pre-determined angle during the final part of said depression, and self-setting abutments on said button and switch member said abutments co-operating to effect depression of said member and final- .ly subsequently releasing said member for the snap action substantially as set forth.
  • Press button switch comprising in combination a hollow press button, a sleeve depending centrally from said button and having a shaped bore, a fixed central spindle having a shaped upper portion adapted for enabling said sleeve to slide longitudinally over it with ability to turn through a limited angle about said spindle, a star member disposed intermediately along the length of said spindle, a combined compression and torsion spring disposed between said sleeve and said star and having respective ends connected with said sleeve and said star, a switchmember slidable and revolubly mounted on the lower portion of said spindle, a spring coiled around the lower portion of said spindle and constantly tending to.
  • cam shaped abutments on said button, and cam shaped abutments on said switch member said abutments normally lying in vertical alignment and being operative for imparting depressionof said button to said switch member and said abutments being adapted for-slipping past one another at the bottom of a depression to release said switch member for ascent in a different circular position and forslipping past one another-during subsequent outward movement of said button whereby the first-named spring is torsioned for finally bringing said abutments into realignment substantially as set forth.
  • Press button switch comprising a depressible and rotatable switch member in combination with 'a rotary step-by-step feed mechanism including means for producing a

Landscapes

  • Push-Button Switches (AREA)
US315783A 1928-04-17 1928-10-29 Electric switch Expired - Lifetime US1842264A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEG73125D DE482622C (de) 1928-04-17 1928-04-17 Druckknopfschalter mit einem auf einer feststehenden Spindel laengsverschiebbar und drehbeweglich angeordneten Schaltkoerper

Publications (1)

Publication Number Publication Date
US1842264A true US1842264A (en) 1932-01-19

Family

ID=25979081

Family Applications (1)

Application Number Title Priority Date Filing Date
US315783A Expired - Lifetime US1842264A (en) 1928-04-17 1928-10-29 Electric switch

Country Status (7)

Country Link
US (1) US1842264A (enrdf_load_stackoverflow)
BE (1) BE354652A (enrdf_load_stackoverflow)
CH (1) CH140241A (enrdf_load_stackoverflow)
DE (1) DE482622C (enrdf_load_stackoverflow)
FR (1) FR660563A (enrdf_load_stackoverflow)
GB (1) GB309903A (enrdf_load_stackoverflow)
NL (1) NL31701C (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2916014A (en) * 1955-01-14 1959-12-08 Wagner Guenter Retractable writing instrument, particularly of the ball point type
US3137276A (en) * 1955-08-30 1964-06-16 Kahn David Inc Protract-retract mechanism and writing instrument including same
US3204067A (en) * 1962-12-26 1965-08-31 Boyne Products Inc Push rotary switch construction with lost motion contact coupling
US3223072A (en) * 1963-07-23 1965-12-14 Frank T Johmann Switching device
US4319106A (en) * 1980-03-31 1982-03-09 Armitage Ralph T Push button switch
US5043546A (en) * 1990-07-16 1991-08-27 Oslo Controls, Incorporated Push-button switch

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2916014A (en) * 1955-01-14 1959-12-08 Wagner Guenter Retractable writing instrument, particularly of the ball point type
US3137276A (en) * 1955-08-30 1964-06-16 Kahn David Inc Protract-retract mechanism and writing instrument including same
US3204067A (en) * 1962-12-26 1965-08-31 Boyne Products Inc Push rotary switch construction with lost motion contact coupling
US3223072A (en) * 1963-07-23 1965-12-14 Frank T Johmann Switching device
US4319106A (en) * 1980-03-31 1982-03-09 Armitage Ralph T Push button switch
US5043546A (en) * 1990-07-16 1991-08-27 Oslo Controls, Incorporated Push-button switch

Also Published As

Publication number Publication date
CH140241A (de) 1930-05-31
FR660563A (fr) 1929-07-12
DE482622C (de) 1929-09-18
GB309903A (en) 1930-04-01
BE354652A (enrdf_load_stackoverflow)
NL31701C (enrdf_load_stackoverflow)

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