US3499127A - Thumbwheel type switch - Google Patents

Thumbwheel type switch Download PDF

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Publication number
US3499127A
US3499127A US813409*A US3499127DA US3499127A US 3499127 A US3499127 A US 3499127A US 3499127D A US3499127D A US 3499127DA US 3499127 A US3499127 A US 3499127A
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US
United States
Prior art keywords
actuator
switch
drum
front wall
casing
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
US813409*A
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English (en)
Inventor
Walter L Cherry
Eric L Long
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
Application filed by Cherry Electrical Products Corp filed Critical Cherry Electrical Products Corp
Application granted granted Critical
Publication of US3499127A publication Critical patent/US3499127A/en
Assigned to CHERRY CORPORATION THE reassignment CHERRY CORPORATION THE CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). EFFECTIVE JULY 14, 1986 Assignors: CHERRY ELECTRICAL PRODUCTS CORPORATION
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
    • 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
    • H01H19/001—Thumb wheel switches
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2101—Cams
    • Y10T74/2102—Adjustable

Definitions

  • a thumbwheel type switch having a sectioned casing providing an interior cavity housing the switch components including a printed circuit board, a rotatable drum having a switch wiper blade affixed thereto and rotatable therewith, an actuator having rotating means comprising a geared arrangement between the actuator and the rotatable drum for selectively rotating the drum and its wiper blade over said circuit board and into selected circuit making positions when said actuator is moved through a prescribed path.
  • a thumbwheel type switch and actuator therefor comprising a housing for a printed circuit board and a rotatable switch blade carrying drum.
  • An actuator for rotating the drum including an actuating lever extending externally of the housing and a rotating means operatable between the actuator, as it is moved through a prescribed path, and the drum for selectively rotating the switch blade carried thereby in either direction so as to move the same over the circuit board through individually designated circuit making positions.
  • FIG. 1 is a perspective view of a dual type thumbwheel switch, including the switch unit of this invention
  • FIG. 2 is a perspective view of the components of the switch unit of this invention in an exploded relationship
  • FIG. 3 is a detailed sectional view taken on line 33 of FIG. 1;
  • FIG. 4 is a side elevational view of the switch actuator as embodied in this invention.
  • FIG. 5 is a top plan view of a modified switch unit embodying the switch components of this invention.
  • FIG. 6 is a perspective view of a modification of certain of the switch components as can be employed in the present invention.
  • FIG. 1 two switch units 10 and 11 are shown assembled in a side-by-side relation.
  • Each end of the assembled unit includes cooperating end plates 12 and 13, respectively, which are retained in assembled relation by removable connecting means 14 journaled therethrough.
  • the present invention is directed to the specific switch components that are operatively contained in unit 10, which may be assembled as illustrated in FIG. 1 or arranged as a single switch unit as is illustrated in FIGS. 5 and 7.
  • unit 10 which may be assembled as illustrated in FIG. 1 or arranged as a single switch unit as is illustrated in FIGS. 5 and 7.
  • the end plates 12 and 13 are positioned on either side of a modular witch casing 15 forming a complete single switch unit.
  • the modular switch casing 15 as shown in FIGS. 2 and 5 comprises a rectangularly shaped open sided hollow receptacle including a side wall 16, a rear wall 17, a front wall 18 and a top and bottom wall 19 and 20.
  • the rear wall 17 is of a width less than the width of the top and bottom walls 19 and 20, and provides a recessed space between the top and bottom walls 19 and 20 for the reception of the rearwardly extending portion of a printed circuit board 21.
  • the printed circuit board 21 when in an assembled relation as hereinafter more fully described normally closes the open side of the switch casing receptacle 15.
  • the front wall 18 of the receptacle 15 provides adjacent its top and bottom edges a forwardly extending lip 22 With the wall therebetween preformed into a smooth curvature in which is formed an opening 23.
  • a shaft 24 Carried by the side wall 16 and projecting inwardly of the center cavity of the receptacle 15 is a shaft 24. This shaft 24 extends through an interior opening 25 formed in the circular body portion of a switch actuator 26.
  • the actuator 26 In assembling the switch components the actuator 26 is placed within the receptacle 16 with the radially extending actuating arm 28 projected out of the opening 23 formed in the front wall 18.
  • the stud shaft 31 is projected into the opening 32 formed in the side wall 16 in such a manner as to pivotally position the actuator 26 relative to the front wall 18 so that its arm 28 and part of the body portion 27 projects out of the opening 23, as seen in FIG. 3.
  • a drum 33 Adapted to be mounted on the shaft 24 is a drum 33.
  • the peripheral edge of the drum 33 through a sector thereof is provided with a series of index teeth 34.
  • the remaining sector of the peripheral edge of the drum 33 contains switch position indicia 35 which are adapted to be exposed through the window 23 formed in the front wall 18 of the receptacle 15 when the drum 33 is mounted on the shaft 24.
  • an externally geared hub 36 Extending axially about the center of the drum 33 is an externally geared hub 36.
  • the geared hub 36 when positioned with the drum 33 on the shaft 24, will project through the center opening 25 formed in the actuator 26 and mesh with the gear teeth 30 carried by the arcuated ring portion 29 of the actuator 26.
  • the drum 33 by pivotal movement of the actuator 26 the drum 33, by the geared connection between its hub 36 and the arcuated internally geared ring 29 of the actuator 26, will be rotated to a limited degree in either direction about the shaft 24.
  • the actuator 26 as hereinbefore described is operatively connected to the switching drum 33 by having the gear ratio between its gear teeth 30 and the geared hub 36 such that arcuated movement of the actuator 26 about its pivot stud 31 from one extremity of its travel to the other will rotate the drum through ten digital switching positions.
  • a switch blade 37 mounted on the opposite side face of the drum 33 and concentrically about the center opening formed therethrough is a switch blade 37, including a plurality of radially extending contact fingers 38 having their free ends lying out of the normal plane of the fact of the drum 33 so as to be moved over the printed circuits 39 contained on the confronting face of the printed circuit board 21.
  • the board 21 is provided with an opening 40 adapted to be freely journaled on the shaft 24.
  • the board 21 is also provided with apertures 43 which are adapted to receive locating pins 44 which project laterally out of the confronting edge surface of the rear wall 17.
  • Adjacent each of the rear corners of the receptacle 15 are formed circular bosses 45 having formed therein an opening through which the connecting means 14 are adapted to be projected.
  • the upper corner boss 45 cooperates with a nipple 46 formed on the adjacent surface of the rear wall 17 to provide a restricted passage 47 through which projects a flat indexing spring 48.
  • One end of the spring 48 is bent to form a lateral flange 49 which is captured in the corner defined by the rear wall 17 and its junction with the top wall 19.
  • the opposite end of the spring 48 is V-notched as at 50 so as to be yieldably received between corresponding index teeth 34 formed in the one sector of the peripheral edge of the drum 33.
  • each structural component is aligned for proper relationship.
  • the exposed edge surface of the top wall 19 and the bottom wall 20 adjacent their junction with the rear wall 17, as well as the front wall 18 adjacent the lip 22 provided thereby carries laterally extending locating pins 51.
  • These pins 51 are insertable into correspondingly aligned openings 52 provided by the outer wall surface 53 of the modular switch unit 11 as shown in FIG. 2, or into aligned openings formed in the confronting wall surface of the end place 13 (not shown) when the unit is assembled as shown in FIG. 5.
  • each end plate comprises a solid substantially flush wall 54 that terminates at its forward end into a laterally extending flange 55.
  • Each of the flanges 55 of each end plate 12 and 13 is provided with a wall abutment 56 that defines the curved front wall area 57 which corresponds to the front wall 18 of either of the switch units and 11 as shown in FIG. 1.
  • each of the walls 54 of each end plate 12 and 13 Adjacent the rear edge of each of the walls 54 of each end plate 12 and 13 are formed openings 58 which are adapted to be in alignment with the openings formed in the corner circular bosses 45 provided by the switch receptacle 15. Through these openings may be projected the connecting means 14 by which each modular switch unit is assembled.
  • a slightly modified switch actuator is shown in FIG. 5, and the modification consists of angularly displacing the radially projecting actuating arm 28 to one side of and out of the line of sight of the opening 23 formed in the front wall 18 of the receptacle 15.
  • the forward wall portion of the actuator 59 is provided with a slotted guide 67 which will receive a corresponding guide lug (not shown) provided by one wall of the casing when the geared hub 68 of the rotatable drum 69 is freely journaled on a shaft, and is positioned in the central opening 60 formed in the actuator.
  • the actuator 59 is operatively connected to the rotatable drum 69 and restricted in its movement through a guided vertical plane such that the gear teeth 62 will engage the geared hub 68 and rotate the drum 69 to expose different indicia 70 through a window portion 71 formed in the front wall of the switch unit 65.
  • an actuator in the form of a rack 72 can be associated with a pinion 73 carried at the center of a rotatable switching drum 74 as shown in FIG. 8.
  • the rack actuator 72 would then move horizontally through an opening formed in the front wall of the switch housing in such a manner to rotate the switch drum 74.
  • a digital switch including a casing having an opening formed in its front wall and providing therein an interior cavity in which there is positioned a printed circuit plate, wherein the improvement comprises:
  • a position indicator for circuit-making contacts mounted within the cavity and movable about an axis spaced from and parallel to said means providing an axis for said actuator, with said position indicator having a peripheral portion exposed through the opening formed in the front wall of the casing,
  • a digital switch as defined by claim 1 including an indexing means selectively positioning said position indicator in the openng formed in the front wall of the casing as the same is rotated in either direction 'by said actuator.
  • indexing means comprises a spring within the cavity of the casing and engageable with the notched circumferential edge of said position indicator to yieldably retain said indicator in the opening formed in the front wall of the casing.
  • a digital switch as defined by claim 1 wherein said cooperating means provided by said position indicator comprises an externally geared hub, the teeth of which mesh with gear teeth provided by said actuator with the gear ratio therebetween being such that by movement of said actuator diiferent portions of said position indicator are exposed in the opening formed in the front wall of the casing and said circuit-making contacts are moved into a predetermined position upon the printed circuit plate.
  • a digital switch as defined by claim 1 wherein said means provided by said actuator extending out of a portion of the opening formed in the front wall of the casing and movable therethrough comprises an elongated lever extending in a plane transversely to the axis of said actuator and said position indicator, and adapted to be moved in either direction through the entire length of said portion of the opening formed in the front wall of the casing.
  • a digital switch as defined by claim 5 wherein said means provided by said actuator extending out of a portion of the opening formed in the front wall of the casing and movable therethrough comprises an elongated lever extending in a plane transversely to the axis of said actuator and said position indicator, and adapted to be moved in either direction through the entire length of said portion of the opening formed in the front wall of the casing.

Landscapes

  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Switches With Compound Operations (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Toys (AREA)
  • Slide Switches (AREA)
  • Tumbler Switches (AREA)
US813409*A 1968-12-26 1968-12-26 Thumbwheel type switch Expired - Lifetime US3499127A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US81340968A 1968-12-26 1968-12-26

Publications (1)

Publication Number Publication Date
US3499127A true US3499127A (en) 1970-03-03

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ID=25212297

Family Applications (1)

Application Number Title Priority Date Filing Date
US813409*A Expired - Lifetime US3499127A (en) 1968-12-26 1968-12-26 Thumbwheel type switch

Country Status (5)

Country Link
US (1) US3499127A (enrdf_load_stackoverflow)
JP (1) JPS4934106B1 (enrdf_load_stackoverflow)
DE (1) DE1938863A1 (enrdf_load_stackoverflow)
FR (1) FR2027107A1 (enrdf_load_stackoverflow)
GB (1) GB1258440A (enrdf_load_stackoverflow)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3575577A (en) * 1969-09-15 1971-04-20 Lunar Electronics Inc Switch module
US3610847A (en) * 1969-07-28 1971-10-05 Automatic Timing & Controls Timing apparatus
US3860774A (en) * 1973-08-23 1975-01-14 Mikhail Iosifovich Karger Rotary-type control switch for selectively controlling a plurality of electrical circuits
US3958087A (en) * 1969-09-04 1976-05-18 Becton, Dickinson Electronics Company Switch structure
US4130080A (en) * 1977-05-31 1978-12-19 Whirlpool Corporation Indicating control structure
US4158114A (en) * 1977-08-04 1979-06-12 David Butler Rotary switching device
EP0051736A1 (de) * 1980-11-10 1982-05-19 Contraves Ag Schaltwerk für einen Codierdrehschalter
US4558513A (en) * 1981-08-19 1985-12-17 Cts Corporation Adjustable rotary switch
US5734139A (en) * 1995-12-27 1998-03-31 Huegin; Walter Shut-off device for a driven shaft
US6271490B1 (en) * 1999-05-24 2001-08-07 Mic Enterprise Co., Ltd. Waterproof lever switch
US20130139632A1 (en) * 2010-05-05 2013-06-06 Zf Friedrichshafen Ag Translatory activation device with indirect latching
WO2014206998A1 (de) * 2013-06-26 2014-12-31 B. Braun Melsungen Ag Einstellvorrichtung für einen durchflussregler

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2609906B2 (de) 1976-03-10 1978-04-20 Preh Elektrofeinmechanische Werke Jakob Preh Nachf., 8740 Bad Neustadt Lenkstockschalter für Kraftfahrzeuge mit einem die feststehenden Schaltkontakte aufweisenden flexiblen gedruckten Bandkabel
DE3104384C2 (de) * 1981-02-07 1985-07-18 Hans-Joachim 8500 Nürnberg Horn Schalteranordnung mit Anzeige

Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1028350A (en) * 1910-09-20 1912-06-04 Hart & Hegeman Mfg Co Electric switch.
US1157310A (en) * 1912-04-08 1915-10-19 Cutler Hammer Mfg Co Electric switch.
US1434972A (en) * 1919-05-31 1922-11-07 Bryant Electric Co Electric switch
US1587640A (en) * 1925-02-07 1926-06-08 Trumbull Electric Mfg Co Electric switch
US1697980A (en) * 1926-08-23 1929-01-08 Krone Carl Rudolph Switch
US2144665A (en) * 1936-01-10 1939-01-24 Christian A Rasmussen Push button operated master switch
US2368083A (en) * 1943-07-14 1945-01-30 Frank Adam Electric Co Operating mechanism for toggle type switches and circuit breakers
US2393184A (en) * 1944-10-14 1946-01-15 Zenith Radio Corp Tone control
US2432782A (en) * 1944-04-28 1947-12-16 Gen Electric Electric switch
US2541917A (en) * 1947-12-17 1951-02-13 Stromberg Carlson Co Band switching arrangement
US2853564A (en) * 1955-12-12 1958-09-23 Brubaker Electronics Inc Digital switch
US2896033A (en) * 1955-01-27 1959-07-21 Daystrom Inc Printed circuit assembly
US3072756A (en) * 1960-01-29 1963-01-08 Tabet Mfg Company Inc Electrical switch assembly
US3089923A (en) * 1959-06-15 1963-05-14 Endevco Corp Sectional digital switch
US3090249A (en) * 1957-10-31 1963-05-21 Maytag Co Interval timer
US3164690A (en) * 1962-04-04 1965-01-05 Chicago Dynamic Ind Inc Rotary type electric switch with wafer plate shorting structure
US3409747A (en) * 1967-03-06 1968-11-05 Mincone Raymond Programmable thumbwheel switch

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1028350A (en) * 1910-09-20 1912-06-04 Hart & Hegeman Mfg Co Electric switch.
US1157310A (en) * 1912-04-08 1915-10-19 Cutler Hammer Mfg Co Electric switch.
US1434972A (en) * 1919-05-31 1922-11-07 Bryant Electric Co Electric switch
US1587640A (en) * 1925-02-07 1926-06-08 Trumbull Electric Mfg Co Electric switch
US1697980A (en) * 1926-08-23 1929-01-08 Krone Carl Rudolph Switch
US2144665A (en) * 1936-01-10 1939-01-24 Christian A Rasmussen Push button operated master switch
US2368083A (en) * 1943-07-14 1945-01-30 Frank Adam Electric Co Operating mechanism for toggle type switches and circuit breakers
US2432782A (en) * 1944-04-28 1947-12-16 Gen Electric Electric switch
US2393184A (en) * 1944-10-14 1946-01-15 Zenith Radio Corp Tone control
US2541917A (en) * 1947-12-17 1951-02-13 Stromberg Carlson Co Band switching arrangement
US2896033A (en) * 1955-01-27 1959-07-21 Daystrom Inc Printed circuit assembly
US2853564A (en) * 1955-12-12 1958-09-23 Brubaker Electronics Inc Digital switch
US3090249A (en) * 1957-10-31 1963-05-21 Maytag Co Interval timer
US3089923A (en) * 1959-06-15 1963-05-14 Endevco Corp Sectional digital switch
US3072756A (en) * 1960-01-29 1963-01-08 Tabet Mfg Company Inc Electrical switch assembly
US3164690A (en) * 1962-04-04 1965-01-05 Chicago Dynamic Ind Inc Rotary type electric switch with wafer plate shorting structure
US3409747A (en) * 1967-03-06 1968-11-05 Mincone Raymond Programmable thumbwheel switch

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3610847A (en) * 1969-07-28 1971-10-05 Automatic Timing & Controls Timing apparatus
US3958087A (en) * 1969-09-04 1976-05-18 Becton, Dickinson Electronics Company Switch structure
US3575577A (en) * 1969-09-15 1971-04-20 Lunar Electronics Inc Switch module
US3860774A (en) * 1973-08-23 1975-01-14 Mikhail Iosifovich Karger Rotary-type control switch for selectively controlling a plurality of electrical circuits
US4130080A (en) * 1977-05-31 1978-12-19 Whirlpool Corporation Indicating control structure
US4158114A (en) * 1977-08-04 1979-06-12 David Butler Rotary switching device
EP0051736A1 (de) * 1980-11-10 1982-05-19 Contraves Ag Schaltwerk für einen Codierdrehschalter
US4405842A (en) * 1980-11-10 1983-09-20 Contraves Ag Stepping mechanism for an encoding rotary switch
US4558513A (en) * 1981-08-19 1985-12-17 Cts Corporation Adjustable rotary switch
US5734139A (en) * 1995-12-27 1998-03-31 Huegin; Walter Shut-off device for a driven shaft
US6271490B1 (en) * 1999-05-24 2001-08-07 Mic Enterprise Co., Ltd. Waterproof lever switch
US20130139632A1 (en) * 2010-05-05 2013-06-06 Zf Friedrichshafen Ag Translatory activation device with indirect latching
US9518650B2 (en) * 2010-05-05 2016-12-13 Zf Friedrichshafen Ag Translatory activation device with indirect latching
WO2014206998A1 (de) * 2013-06-26 2014-12-31 B. Braun Melsungen Ag Einstellvorrichtung für einen durchflussregler
CN105358197A (zh) * 2013-06-26 2016-02-24 贝朗医疗有限公司 流量控制器的调节装置
US10646647B2 (en) 2013-06-26 2020-05-12 B. Braun Melsungen Ag Adjusting device for a flow controller

Also Published As

Publication number Publication date
FR2027107A1 (enrdf_load_stackoverflow) 1970-09-25
DE1938863A1 (de) 1970-07-09
JPS4934106B1 (enrdf_load_stackoverflow) 1974-09-11
GB1258440A (enrdf_load_stackoverflow) 1971-12-30

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Legal Events

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AS Assignment

Owner name: CHERRY CORPORATION THE, STATELESS

Free format text: CHANGE OF NAME;ASSIGNOR:CHERRY ELECTRICAL PRODUCTS CORPORATION;REEL/FRAME:004610/0553

Effective date: 19860702

Owner name: CHERRY CORPORATION THE

Free format text: CHANGE OF NAME;ASSIGNOR:CHERRY ELECTRICAL PRODUCTS CORPORATION;REEL/FRAME:004610/0553

Effective date: 19860702