US3283105A - Detent means for a positionable switch actuator - Google Patents

Detent means for a positionable switch actuator Download PDF

Info

Publication number
US3283105A
US3283105A US386275A US38627564A US3283105A US 3283105 A US3283105 A US 3283105A US 386275 A US386275 A US 386275A US 38627564 A US38627564 A US 38627564A US 3283105 A US3283105 A US 3283105A
Authority
US
United States
Prior art keywords
actuator
arm
contact
support member
engagement
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
US386275A
Other languages
English (en)
Inventor
David R Locke
John F Daniels Jr
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.)
Unisys Corp
Original Assignee
Sperry Rand 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
Application filed by Sperry Rand Corp filed Critical Sperry Rand Corp
Priority to US386275A priority Critical patent/US3283105A/en
Priority to FR25113A priority patent/FR1440493A/fr
Priority to GB30617/65A priority patent/GB1095239A/en
Priority to DE19651540484 priority patent/DE1540484C/de
Priority to CH1035765A priority patent/CH454999A/de
Priority to BE667303A priority patent/BE667303A/fr
Priority to AT688365A priority patent/AT260333B/de
Priority to DK393565AA priority patent/DK114493B/da
Priority to NL6509920A priority patent/NL150260C/nl
Priority to NO159160A priority patent/NO115401B/no
Application granted granted Critical
Publication of US3283105A publication Critical patent/US3283105A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
    • H01H21/02—Details
    • H01H21/18—Movable parts; Contacts mounted thereon
    • H01H21/36—Driving mechanisms
    • H01H21/50—Driving mechanisms with indexing or latching means, e.g. indexing by ball and spring; with means to ensure stopping at intermediate operative positions
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
    • H01H19/54—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand the operating part having at least five or an unspecified number of operative positions
    • H01H19/60—Angularly-movable actuating part carrying no contacts
    • H01H19/62—Contacts actuated by radial cams
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H23/00—Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button
    • H01H23/02—Details
    • H01H23/12—Movable parts; Contacts mounted thereon
    • H01H23/16—Driving mechanisms

Definitions

  • the present invention relates to new and useful improvements in electric switches.
  • manually operable electric switches are lused to accomplish a variety of functions.
  • manually operable electric switches are used to selectively open and close a motor operating circuit.
  • multi-positional electric switches are utilized to selectively control a plurality of modes of operation, such as selecting a particular voltage level of operation or selecting a particular source of electric power for operating the motor.
  • One type of manually operable electric switch constructed to accomplish these various functions includes movable contact means and stationary contact means mounted on a support member within the appliance casing.
  • a positionable switch actuator which is manually operable from without the casing, is provided with cam means in engagement with the movable contact means.
  • the actuator is movable to a plurality of positions whereby the movable contact means are moved by the cam means alternately into engagement or disengagement with the stationary Contact means.
  • Another object is to provide novel means for latching a positionable switch actuator in any of a plurality of moved positions.
  • Another object is to provide novel means for effecting a positive snap action to a switch actuator to insure positive engagement and disengagement of circuit establishing contact means.
  • a still further object is to provide a lo-w cost electric switch of simple design and which electric switch is comprised of relatively few parts to facilitate the assembly thereof.
  • the present invention contemplates a novel electric switch and which electric switch includes novel means for maintaining a positionable switch actuator in a moved position against accidental movement thereof away from the latter position.
  • the electric switch includes stationary contact means mounted on a support member with movable contact means also provided on the support member adapted for selective engagement and disengagement with the stationary contact means.
  • the actuator is provided Iwith cam means for controlling movement of the movable contact means into and out of engagement with the stationary contact means.
  • the movable contact means is provided with a rst spring ⁇ arm adapted to engage the stationary contact means and with a second spring arm provided with resilient latch means on one end thereof.
  • Detent means are formed 4on the actuator to receive the latch means of the second arm in any moved position of the actuator to restrain undesired movement of the actuator away from the selected moved position.
  • FIG. 1 is a front elevational view of a portion of a casing of an electrically energized device which incorporates an electric switch of the present invention
  • FIG. 2 is a sectional view taken on the line of 2 2 of FIG. l;
  • FIG. 3 is a bottom View of the electric switch viewed from within the casing, and illustrates the movable contact means in a center position;
  • FIGS. 4 and 5 are views similar to FIG. 3 and sho-w the movable contact means and actuator cam means in different moved positions;
  • FIG. 6 is an exploded perspective view of the parts of the electric switch of FIG. l through 5;
  • FIG. 7 is a front elevational view of a portion of a casing of an electrically energized device in which is incorporated another embodiment of an electric switch constructed according to the present invention
  • FIG. 8 is a rear view of the electric switch of FIG. 7 as viewed from within the casing;
  • FIG. 9 is a sectional view taken on the line 9-9 of FIG. 8, and shows the switch contacts in open condition
  • FIG. 10 is a view similar to FIG. 9 and shows the switch contacts in closed condition
  • FIG. 11 is an exploded perspective view of the parts of the electric switch of FIGS. 7 through l0.
  • Switch mechanism 10 is mounted on a wall portion 11 (partially shown) of an electrically energized device as for example, an electric dry shaver. It is to be understood that the novel electric switch which is to be hereinafter fully described is not limited to such an electrically energized device and as will be seen is readily adapted for use with a wide variety of electrically powered devices to be selectively connected to one or more electric circuits.
  • the drawings have been simplified so as to show only conventional structure as being necessary for a clear understanding of the present device.
  • Switch 16 is of the type usually referred to as a single pole-double throw switch and includes a support member l2 of nonconductive material and which support member 12 has one face secured to the rear surface 14 of casing wall 11 (FIG. 3) by any suitable means (not shown).
  • a pair of spaced stationary contact members I6 and 17 are arranged on support member 12 with each contact member 1.6 and 17 provided with a clamp portion 13 and 19 respectively (FIGS. 3 and 6) secured to an edge marginal portion of support member 12.
  • Contact buttons 16a and 17a (FIGS. 2 and 3) are provided on the opposing faces of stationary contacts 16 and 17 respectively.
  • Movable contact means are provided for selectively engaging either stationary contact 16 or 17 and which means include a movable contact member 20 (FIG. 3) of generally U-shaped configuration.
  • Contact member 20 is attached to support member 12 by means of rivets 21 secured to a base portion 22 of contact member 20 and support member 12.
  • a pair of spaced leaf spring arms 24 and 25 extend from base por-tion 22 and by their construction are biased toward each other. Arms 24 and 25 are of different lengths with the longer spring arm 25 provided with a contact button 26 on the free end thereof and which contact button 26 lis disposed between stationary contact buttons ida and 17a.
  • the free end of the shorter spring arm 24 is provided with a ylatch hook portion 27 for purposes to ybe hereinafter fu-lly described.
  • Actuator 28 includes a nger piece 36 which extends through an aperture 31 (FIG. 2) in casing wall 11 to the exterior of the casing to provide means for manually rotating actuator member 25 to a plurality of positions as indicated by the numerals I, II and III on the outer surface of casing wall 11 in FIG. 1.
  • a circular Iaperture 32 (FGS. 2, 3, ⁇ and 6) is provided in support member 12 and through which aperture 32 extends a stub shaft 35 of actuator 2S.
  • S-paced rims 33 and 34 are provided on actuator 28 and as seen FIG. 2 are respectively disposed between support member 12 and casing wall 11 to maintain actuator 28 within the casing.
  • a cam portion 36 is provided on the end of stub shaft 35 and which cam portion extends between spring arms 24 and 25 of contact member 20.
  • C-am portion 36 is provided with a at corner portion 37 and which corner portion 37 merges at one side edge with an elongated flat surface 38 and at the opposite :side edge with an arcuate camming surface 39.
  • Detent means are provided on the Iside of cam portion 36 (FIG. 3) connecting flat surface 3S with .arcuate surface 39, and which detent means includes triangular shaped recesses 40, 41 and 42 respectively. In the center :position of contact arm 25 (FIGS.
  • corner portion 37 of cam portion 36 engages arm 25 and latch hook 2'7 on contact arm 24 is seated in recess 41 to maintain actuator 28 against arm 25.
  • Contact button 26 is maintained out of engagement with stationary contact buttons 16a and 17a and actuator 28 is held in -position against accidental movement by the engagement of hook 27 in recess 41.
  • finger piece 3@ and actuator 28 are rotated from position I to position II (FIG. l).
  • cam portion 36 is moved in the direction designated by arrow A in FIG. 3 to ilex contact arm 25 to the right (FIG. 3).
  • Cam corner portion 37 moves out of contact with arm 25 and arcuate camming surface 39 is brought into engagement with contact arm 25 to move contact arm 25 whereby contact button 26 is brought into engagement with contact button 17a of stationary contact 17, as shown in FIG. 4.
  • arm 24 of contact member 2t flexes to the left (FIG. 3) to move latch hook 27 out of recess 41.
  • latch hook 27 snaps into detent recess 42 lrestraining further movement of actuator 28 and maintaining contacts 25 and 17 in firm engagement.
  • FIGS. 7 to 11, inclusive another embodiment of the present invention is disclosed in which an electric switch 45 is provided for attachment to the rear surface 46a of a casing wall 46 (partially shown in FIGS. 7 to of an electrically energized device.
  • Switch 45 is of a single pole-single throw type and includes a support member 47 of non-conductive material and which support 47 is secured to surface y46a of casing wall 46 by screw threaded fastenings 48 (FIG. 8).
  • a rectangular shaped opening 49 is provided in support member 47 and which opening registers wit-h a corresponding opening 50 in wall 46.
  • a stationary contact comprising a contact button 51 (FIG. 1l) is secu-red to support member 47 adjacent one edge of opening 49.
  • a substantially U-shaped movable contact member 52 has one end secured to support member 47 adjacent the opposite edge of opening 49 by means of rivets 53.
  • Movable contact member 52 includes a pair of sp-aced and parallel resilient arms 54 and 55 of dilr'erent lengths. Arms 54 and 55 both extend over opening 49 and by their construction are both biased toward support member 47.
  • the free end of the longer arm 55 is provided with a contact button 56 adapted to engage stationary contact 51 and shorter arm 54 of contact member 52 is provide-d with a latch hook projection 5S.
  • Switch includes means for controlling movement of movable contact ⁇ member 52 and which means comprise an actuator 60.
  • Actuator 60 includes a -moulded wedgeshaped main body portion 61 formed of a suitable nonconductive material such as for example nylon.
  • a pair of pintles 62 are formed on the opposite side walls of body portion 61 and which pintles 62 (FIG. l1) are disposed in slots 63 in the spaced side walls of open-ing 50 in casing wal-l 46 mounting actuator t) for pivotal movement therein.
  • An outwardly extending cam projection 64 is formed on body portion 61 Ian-d is adapted to engage movable contact arm 55 of switch 45.
  • Means to detent actuator 60 are provided on body portion 61 :and include an arcuate shaped bulge portion 65.
  • a pair of triangular shaped recesses 66 and 67 are provided in the periphery of bulge 65 and are adapted to receive latch hook 58 of spring arm 54.
  • contact arm 55 is maintained out of engagement with stationary cont-act 51 by projection 64 and latch hook 58 is seated in detent recess 67 over the axis of r-otation of actuator 60 to restrain movement of actuator 60.
  • An electric switch of the class described comprising (a) a support member of nonconductive material,
  • spring contact means mounted on said support member and including a spring contact arm extending between said pair of spaced stationary contacts
  • detent means on said actuator including a plurality of recesses in the surface of said actuator equal in number to the number of positions of said actua-tor member
  • said spring contact means including a second resilient arm spaced from said first arm and biased in the direction of said first arm, an-d (k) a latch hook provided on the free end of said second spring arm adapted to engage in said detent recess according to the selected position of said actuator to prevent ready movement of the said actuator to the remaining positions,
  • said second spring arm being yieldable upon movement of said actuator to release said latch hook from said selected detent recess to allow said actuator to be manually rotated to one of said other two positions whereat said latch ⁇ hook is adapted to engage in an-other of said detent .recesses in said actuator member.
  • An electric switch of the class described comprising (a) a support member of nonconductive material,
  • (k) detent means on said actuator including a plurality of recesses in the surface of said actuator equal in number to the number of positions of said actuator member, and
  • said latch member being yieldable upon movement of said actuator to release from said selected detent recess to allow said actuator to be rotated to a selected one of s aid other two positions whereat said latch member is adapted to engage in another of said detent recesses in said actuator member.
  • An electric switch of the class described comprising (a) a support member of nonconductive material,
  • cam means on said actuator adapted to engage said rst arm to maintain said first arm out of engagement with said stationary contact when said actuator is in said rst position
  • detent means on said actuator in engagement with said latch means on said second arm in either of said two positions of said actuator member to restrain ready movement of said actuator.
  • An electric switch of the class described comprising (a) a support member of nonconductive material,
  • detent means on said actuator adapted to engage said resilient latch hook on said actuator in either of said two positions to restrain undesired movement of said actuator.
  • said actuator member comprises a wedge-shaped body portion having said contact engaging projection extending outwardly from said body portion and said detent means comprising a bulge projection lon said body portion having at least two recesses provided therein with each of said recesses adapted to receive and detent said latch hook in a selected position of said actuator to restrain ready movement of said actuator to the other position.
  • An electric switch of the class described comprising (a) a support member of non-conductive material,
  • cam means on said actuator member adapted for engagement with said first spring arm to control said movement of said iirst spring arm respectively into and out of engagement with said stationary contact in accordance with said positions of said actuator member
  • said actuator member comprises a wedge-shaped body portion having a pair of pintles extending from spaced sidewalls thereof to support the body portion for pivotal movement relative to the support member, said cam means extending outwardly from the body portion, said detent means comprising a bulge projection on said body portion disposed adjacent said cam means and having at least two recesses provided therein, and said combination further including said latch means comprising a hook on the free end of said second spring arm adapted to selectively engage in said recesses in accordance with the position of the actuator member to restrain ready movement of said actuator member between said positions.

Landscapes

  • Push-Button Switches (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Tumbler Switches (AREA)
US386275A 1964-07-30 1964-07-30 Detent means for a positionable switch actuator Expired - Lifetime US3283105A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
US386275A US3283105A (en) 1964-07-30 1964-07-30 Detent means for a positionable switch actuator
GB30617/65A GB1095239A (en) 1964-07-30 1965-07-19 Electric switch
FR25113A FR1440493A (fr) 1964-07-30 1965-07-19 Commutateur électrique
CH1035765A CH454999A (de) 1964-07-30 1965-07-23 Elektrischer Schalter
DE19651540484 DE1540484C (de) 1964-07-30 1965-07-23 Elektrischer Schalter
BE667303A BE667303A (fr) 1964-07-30 1965-07-23 Commutateur électrique
AT688365A AT260333B (de) 1964-07-30 1965-07-26 Elektrischer Schalter
DK393565AA DK114493B (da) 1964-07-30 1965-07-30 Elektrisk kontakt.
NL6509920A NL150260C (nl) 1964-07-30 1965-07-30 Elektrische schakelaar met een draaibare schakelnok die enerzijds een verende contactarm bestuurt en anderzijds een vertanding bezit, waarin ter arretering een verende grendelarm grijpt.
NO159160A NO115401B (no) 1964-07-30 1965-07-30 Elektrisk kambryter med arreteringsmidler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US386275A US3283105A (en) 1964-07-30 1964-07-30 Detent means for a positionable switch actuator

Publications (1)

Publication Number Publication Date
US3283105A true US3283105A (en) 1966-11-01

Family

ID=23524912

Family Applications (1)

Application Number Title Priority Date Filing Date
US386275A Expired - Lifetime US3283105A (en) 1964-07-30 1964-07-30 Detent means for a positionable switch actuator

Country Status (9)

Country Link
US (1) US3283105A (de)
AT (1) AT260333B (de)
BE (1) BE667303A (de)
CH (1) CH454999A (de)
DK (1) DK114493B (de)
FR (1) FR1440493A (de)
GB (1) GB1095239A (de)
NL (1) NL150260C (de)
NO (1) NO115401B (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3470333A (en) * 1967-06-20 1969-09-30 Beckman Instruments Inc Multiposition rotary switch
US3489029A (en) * 1967-03-17 1970-01-13 Oak Electro Netics Corp Detent spring
US3676627A (en) * 1971-04-20 1972-07-11 Mc Graw Edison Co Switch mechanism with unitary biasing, contact, and detent spring
US3688240A (en) * 1970-03-16 1972-08-29 Us Industries Inc End connector for a power distribution system
US3783211A (en) * 1971-08-05 1974-01-01 P Panettieri Safety impact switch device for motor vehicles
US4803313A (en) * 1986-12-23 1989-02-07 Braun Aktiengesellschaft Electric switch with sealed plural compartments
US8561874B2 (en) 2006-10-06 2013-10-22 Covidien Lp Surgical instrument with articulating tool assembly
US9847194B2 (en) 2014-03-28 2017-12-19 Black & Decker Inc. Integrated electronic switch and control module for a power tool
US10541588B2 (en) 2017-05-24 2020-01-21 Black & Decker Inc. Electronic power module for a power tool having an integrated heat sink

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3988555A (en) * 1975-06-20 1976-10-26 Amp Incorporated Cam operated switch
HU189816B (en) * 1984-02-08 1986-08-28 Kontakta,Hu Precision click switch
FR2738666B1 (fr) * 1995-09-11 1997-11-21 Robot Coupe Sa Commutateur a trois positions

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2204949A (en) * 1938-01-08 1940-06-18 Micro Switch Corp Control system for a plurality of motors
US2424116A (en) * 1944-09-07 1947-07-15 Mallory & Co Inc P R Time switch
US2600652A (en) * 1947-04-24 1952-06-17 Knapp Monarch Co Control switch

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2204949A (en) * 1938-01-08 1940-06-18 Micro Switch Corp Control system for a plurality of motors
US2424116A (en) * 1944-09-07 1947-07-15 Mallory & Co Inc P R Time switch
US2600652A (en) * 1947-04-24 1952-06-17 Knapp Monarch Co Control switch

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3489029A (en) * 1967-03-17 1970-01-13 Oak Electro Netics Corp Detent spring
US3470333A (en) * 1967-06-20 1969-09-30 Beckman Instruments Inc Multiposition rotary switch
US3688240A (en) * 1970-03-16 1972-08-29 Us Industries Inc End connector for a power distribution system
US3676627A (en) * 1971-04-20 1972-07-11 Mc Graw Edison Co Switch mechanism with unitary biasing, contact, and detent spring
US3783211A (en) * 1971-08-05 1974-01-01 P Panettieri Safety impact switch device for motor vehicles
US4803313A (en) * 1986-12-23 1989-02-07 Braun Aktiengesellschaft Electric switch with sealed plural compartments
US8561874B2 (en) 2006-10-06 2013-10-22 Covidien Lp Surgical instrument with articulating tool assembly
US8584921B2 (en) * 2006-10-06 2013-11-19 Covidien Lp Surgical instrument with articulating tool assembly
US9847194B2 (en) 2014-03-28 2017-12-19 Black & Decker Inc. Integrated electronic switch and control module for a power tool
US10043619B2 (en) 2014-03-28 2018-08-07 Black & Decker Inc. Biasing member for a power tool forward/reverse actuator
US10497524B2 (en) 2014-03-28 2019-12-03 Black & Decker Inc. Integrated electronic switch and control module for a power tool
US10541588B2 (en) 2017-05-24 2020-01-21 Black & Decker Inc. Electronic power module for a power tool having an integrated heat sink

Also Published As

Publication number Publication date
DE1540484B2 (de) 1973-01-04
NL150260B (nl) 1976-07-15
NL6509920A (nl) 1966-01-31
NO115401B (no) 1968-09-30
AT260333B (de) 1968-02-26
NL150260C (nl) 1976-12-15
BE667303A (fr) 1965-11-16
DK114493B (da) 1969-07-07
DE1540484A1 (de) 1970-01-02
CH454999A (de) 1968-04-30
FR1440493A (fr) 1966-05-27
GB1095239A (en) 1967-12-13

Similar Documents

Publication Publication Date Title
US3283105A (en) Detent means for a positionable switch actuator
JPH0141141Y2 (de)
US2669613A (en) Cam switch
US3196237A (en) Rotary switch using plastic cover with integral leaf springs as positioning means
US3294945A (en) Switch device with illuminated switch handle
US3408463A (en) Double pole, double throw switch assembly
US3780245A (en) Rotary switch with enlarged shaft journaled in and removable through switch cover
US4497985A (en) Line and program switch assembly for a timing mechanism
US3205466A (en) Miniaturized variable resistor and switch
US5746309A (en) Ratchet cam alternate action mechanism
US3410971A (en) Double throw, snap acting electric switch
US3372247A (en) Electric switch having a pair of contacts actuated by a cammeans having a plurality of flat outer surfaces
US3842328A (en) Speed control device with independent speed control and on-off operating members
US3320389A (en) Electric switch having pivoting structure on fixed contact
US2459998A (en) Rotary electric switch
US3182161A (en) Handle quieting action for a. c. switches
US3206563A (en) Multi-position electric switch with movable cam contact means
US2502042A (en) Electrical switch
US2458927A (en) Electrical switch device
US4636596A (en) Power switch for a battery
US4176261A (en) Electric switch for motor reversing
US2962572A (en) Low voltage a. c. current switch
US2625616A (en) Electrical switch structure
US4181825A (en) Electric switch for motor reversing
US2809260A (en) Electric circuit controller