US3652963A - Push button switch - Google Patents

Push button switch Download PDF

Info

Publication number
US3652963A
US3652963A US91060A US3652963DA US3652963A US 3652963 A US3652963 A US 3652963A US 91060 A US91060 A US 91060A US 3652963D A US3652963D A US 3652963DA US 3652963 A US3652963 A US 3652963A
Authority
US
United States
Prior art keywords
slide
switch
magnet
housing
push button
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
US91060A
Other languages
English (en)
Inventor
Dean H Fox
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.)
Hathaway Instruments Inc
Original Assignee
Hathaway Instruments Inc
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 Hathaway Instruments Inc filed Critical Hathaway Instruments Inc
Application granted granted Critical
Publication of US3652963A publication Critical patent/US3652963A/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
    • H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
    • H01H36/0006—Permanent magnet actuating reed switches
    • H01H36/004—Permanent magnet actuating reed switches push-button-operated, e.g. for keyboards
    • 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
    • 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
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard

Definitions

  • the magnet is rotatably mounted on the switch housing adjacent the reed switch on a stationary axis transverse to the longitudinal axis of the switch and is rotated from one position to the other by a linearly movable spring biased low inertia slide connected to rotate the magnet by operation of a crank pin and lost motion slot connection.
  • the switch housing is a longitudinally split cylinder, provides a bore for the slide and is held in assembled relationship by a cylindrical sleeve and a closure cap.
  • Various types of switch actuators have been provided heretofore, which employ magnetic elements for actuating the switch.
  • the reed switch frequently used today comprises two or more reeds of magnetic material sealed within a glass envelope in an inert atmosphere. These reed switches have been operated by solenoids and by movable magnets which produce magnetic fields along the reeds and effect attraction and contact of the separate reeds. The reeds in some applications have been held open by producing transverse magnetic fields.
  • a push button switch which includes a housing comprising two elongated cylindrical half sections held in assembled relationship by a cylindrical shell pressed over the two halves and a cap snapped over the end of the assembly to close one end thereof.
  • a slidable actuating member is mounted for longitudinal movement in a complementary passage formed centrally of the housing.
  • the housing cylinder and slide are constructed from a suitable light, synthetic plastic material.
  • a sealed glass enclosed reed type switch is positioned longitudinally in one of the half sections and a permanent magnet is pivotally mounted on the other on an axis transverse of the switch.
  • the slide is spring biased toward the open end of the housing and an actuating button is attached thereto for pressing the slide inwardly against the biasing force.
  • a transverse slot in the slide and an eccentric pin on the magnet structure provide a driving connection between the slide and magnet for rotating the magnet upon depression of the button.
  • the magnet is moved between a position locating its field transverse to the switch reeds for holding the switch open and a position lengthwise of the reeds for closing the switch. Very small inertial forces are involved and the switch is highly resistant to actuation or injury due to vibration or shock.
  • FIG. 1 is a perspective view of a push button switch embodying the invention
  • FIG. 2 is an exploded perspective view illustrating the component parts of the switch in FIG. 1;
  • FIG. 3 is an inside elevation view of one-half of the of FIG. 2;
  • FIG. 4 is an inside elevation view of the other half of the housing of FIG. 2;
  • FIG. 5 is a sectional elevation view, taken along the plane of division of the housing halves looking toward the housing half of FIG. 4;
  • FIG. 6 is a section view similar to FIG. 5, looking toward the housing half of FIG. 3 with the push button slide removed;
  • FIG. 7 is an elevation view of the push button slide with the magnetic actuator in the position of FIG. 5;
  • FIG. 8 is a view similar to FIG. 7 showing the push button slide and magnet in their actuated position
  • FIG. 9 is a side elevation view of the push button slide
  • FIG. 10 is a side elevation view of the magnet holding unit
  • FIG. 11 is the right hand side elevation view of the magnet holding assembly.
  • FIG. 12 is an inside or top plan view of the end closure cap of the housing.
  • FIG. 1 illustrates a push button switch comprising a body portion 10, an actuating button 11, and a closure cap 12 through which leads l3 and 14 protrude.
  • the cap 12 is provided with a threaded stud 15 which may be employed for securing the switch in position on the equipment on which it is used.
  • the components of the push button switch of FIG. 1 are illustrated in the exploded perspective view, FIG. 2.
  • the switch assembly includes a housing of suitable electric insulating material such as a light weight synthetic plastic; the housing is formed in two cylindrical halves 16 and 17.
  • the switch has been illustrated as provided with a two-pole, two-reed sealed switch 18, the terminals of which are connected to the leads l3 and 14.
  • Switch 18 is arranged to be mounted in cradles or seats, 23 and 24, molded in the central or back inside wall of the housing member 16.
  • a slide member 25 of rectangular cross section is provided for longitudinal movement within the housing formed by the halves l6 and 17, and the configuration of the slide is complementary to the walls of the passage formed by rectangular channels formed within the housings l6 and 17.
  • the permanent magnet 26 is arranged to be mounted in a cross slot 29 in a nonmagnetic holder 27 in which the magnet is retained by a press fit or by suitable cement; retaining ridges 29 are provided for the magnet along the top of the slot 29.
  • the holder 27 is preferably made of light synthetic plastic material and has a shaft 28 positioned to pass through a slot 30 in the slide 25 and to be seated or joumaled in a bearing opening 31 in the back or central side wall of the housing member 17.
  • the slide 25 is arranged to be actuated by the push button 11 through an adapter 32, has an octagonal head 33 constructed to be snapped into the push button member 11 and held in place by flexible plastic lugs 34.
  • a helical compression spring 35 is provided to act between the cap 12 and the slide 25 and bias the slide to its upper position.
  • a lug 36 parallel to the shaft 28 of the magnet mounting member 27 and eccentric with respect to the shaft is arranged to engage a cross slot 37 formed in the back wall of the slide 25 when the shaft 28 is in position in the bearing hole 31 in the housing 17.
  • the housing half 16 is provided with right angled slots or grooves 38 and 39 which are complementary to and opposite similar grooves 41 and 42 in the housing half of 17. These grooves are provided to accommodate the leads of switch, the grooves 38 and 41 in the assembled housing providing the passage for a right angled turn in the wire 13 as indicated at 43.
  • the grooves formed by these right angled slots are in register with the openings 20 and 22 in the end cap 12 when the switch is assembled.
  • FIGS. 5 and 6 The arrangement of the components of the switch when assembled is shown in FIGS. 5 and 6.
  • the two halves 16 and 17 are assembled with the switch 18 and slide 25 together with a housing magnet and magnet mounting 26 and 27 in position with the shaft 28 in the bearing opening 31.
  • spring 35 fits over a longitudinally extending lug 44, passes through a passage 45 formed in the lower end of the housing half 17 and engages a seat or a lug formed on the cap 12 on the inside thereof opposite a positioning pin or a lug 47 on the outside of the cap.
  • longitudinal guide or positioning members 48 and 50 along the inside edges of the half section 17 fit into complementary slots 51 and 52, respectively, in the edge walls of the half section 16.
  • the sections are held in assembled relationship by pressing the cap 12 into position with an inner annular ridge 53 thereof, fitting into annular grooves 54 and 55 in the lower ends of the members 16 and 17, respectively.
  • Another cylindrical sleeve 56 is then pressed over the two halves from the upper end of the housing until it seats against the edge of the cap 12 and securely holds the two halves 16 and 17 in their assembled relationship.
  • the entire assembly of the internal parts comprising the switch 18, the slide 25 and the magnet mounting structure are prevented from moving outwardly from the housing by the seating of the switch 18 in the cradles 23 and 24 and by the leads 13 and 14, the lead 14 passing through an opening 57 illustrated in FIG. 3 which passes through the cradle 23 and then outwardly into a groove 58 in the outer wall of the housing member 16.
  • the slide 25 is provided with two projections 60 and 61 at its lower end, and flush with the bottom wall of the slide from which the lug 44 extends. These projections act as guides or stabilizers for the slide as it moves in the housing section 17 and bear against reduced wall portions 62 and 63, respectively, which extend into the internal passage in housing portion 16.
  • the slide 25 is limited in its upper or outward movement in the passage within the housing by tapered wall portions 64 which engage complementary tapered portions 65 formed in rectangular extensions 66 and 67 of the half portions at the ends of the housing portions 16 and 17, respectively.
  • the adapter 32 has its cylindrical portion fitted within a cylindrical passage 68 in the upper rectangular portion of the slide 25.
  • the upper portion of the slide is also provided with a longitudinal slot 70 which prevents interference with the upper leads of the upper lead 14 of the switch 18.
  • the fitting 32 is constructed of suitable synthetic plastic material which is sufficiently flexible to be pressed into and grip the cylindrical walls 68 of the slide.
  • a raised longitudinal guide member 72 is provided to position the adapter in the cylindrical passage 68 in a complementary groove 73 in the slide as indicated in FIG. 5.
  • a longitudinal groove, or slot 75, in the adapter 32 affords greater flexibility for fitting the cylindrical portion thereof in the slide 25.
  • the cylindrical casing or cover 56 is provided with a longitudinal rib 76 which is employed during the assembly of the switch to obtain the desired relationship of the parts so that the rib 76 fits within a comer of the rectangular hollow portion of the button 11 indicated at 77.
  • FIGS. and 6 it will be seen that the magnet 26 is pivotally mounted opposite the overlapping portions of the reeds within the switch 18, which are indicated at 78 and 79. It will also be seen that when the slide 25 is depressed by pressing the button 11 the upper wall of the lateral slot 37 will press down on the pin 36 and rotate the magnet mounting 27 about the pivot 28. Proportioning of the parts is made so that in the farthest depressed position the magnet 26 is turned from its transverse position, substantially normal to the axis of the slide to a position in alignment with the slide so that the magnetic field is arranged generally in alignment with the reeds 78 and 79 and thereby causes the reeds to move together into engagement and close the switch. The two positions are illustrated in FIGS.
  • FIG. 7 illustrating the slide in the same position as FIG. 5 and FIG. 8 in the actuated position with the magnet turned to a position 90 from that of FIG. 7.
  • the reeds are released and held apart and when a sufficient component of the field lies along the axis of the reeds, they will be brought together into contact. Pressing of the button 11 thus provides a positive actuation of the reed switch.
  • the axis of the magnet 26 may be arranged either as illustrated or as at right angles to its positions in FIGS. 5 and 6 so that upon actuation the push button may be made to open the switch instead of closing it.
  • the push button switch may be made either of the normally open or normally closed type.
  • a push button switch as illustrated is such that the low inertia parts comprising the slide 25 and the magnetic assembly may be employed and very low inertial forces are present during vibration or shock, and there is little tendency to turn the magnet from its normal position.
  • the magnet itself being pivoted on a stationary housing member 17 has no tendency to turn since it is symmetrical and is pivoted on the shaft 28 which is in the center of the magnet as clearly shown in FIGS. 10 and 11.
  • the only offcenter element being the pin 36 which is of the light weight plastic material and has substantially no effect on the positioning of the magnet during vibration or shock.
  • the spring 35 may be relatively light in view of the light weight characteristics of the slide 25, thus an effective low inertia switch requiring only a light touch on the push button 11 is provided for quick actuation and release of the switch.
  • a push button switch comprising:
  • a housing having a slide mounted therein for movement along a fixed path between two positions
  • a reed type magnetic switch mounted in said housing adjacent said slide with the reeds thereof lying in a plane substantially parallel to said path, a magnet,
  • said mounting means and said slide having a pin on one and a slot in the other constituting a pin-and-slot connection between said slide and said mounting means arranged eccentric of said axis for rotating said magnet about said axis upon movement of said slide.
  • said magnet in one of said positions of said slide having its poles extending along a line substantially longitudinal of the reeds of said switch and in the other of said positions substantially normal to said reeds, whereby said switch is closed in said one position of said slide and open in the other.
  • a push button switch as set forth in claim 1 including means for biasing said slide toward one of said end positions.

Landscapes

  • Push-Button Switches (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
US91060A 1970-11-19 1970-11-19 Push button switch Expired - Lifetime US3652963A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US9106070A 1970-11-19 1970-11-19
US10678671A 1971-01-15 1971-01-15

Publications (1)

Publication Number Publication Date
US3652963A true US3652963A (en) 1972-03-28

Family

ID=26783333

Family Applications (2)

Application Number Title Priority Date Filing Date
US91060A Expired - Lifetime US3652963A (en) 1970-11-19 1970-11-19 Push button switch
US106786A Expired - Lifetime US3652964A (en) 1970-11-19 1971-01-15 Pushbutton switch and assembly

Family Applications After (1)

Application Number Title Priority Date Filing Date
US106786A Expired - Lifetime US3652964A (en) 1970-11-19 1971-01-15 Pushbutton switch and assembly

Country Status (6)

Country Link
US (2) US3652963A (enExample)
JP (1) JPS5429702B1 (enExample)
DE (1) DE2131336C3 (enExample)
FR (1) FR2114329A5 (enExample)
GB (1) GB1350684A (enExample)
SE (1) SE373452B (enExample)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3763451A (en) * 1971-12-15 1973-10-02 Siemens Ag Control unit for electronic systems
US3818393A (en) * 1972-09-25 1974-06-18 Siemens Ag Control unit for electronic system
USD514072S1 (en) * 2004-02-10 2006-01-31 Industrias Lorenzo, S.A. Push button with light
US20120160642A1 (en) * 2010-12-22 2012-06-28 Hung-Min Liao Switch unit
CN102842459A (zh) * 2012-08-31 2012-12-26 天津大学 一种磁控开关
CN102842458A (zh) * 2012-08-31 2012-12-26 天津大学 一种磁控开关
US11662086B2 (en) 2021-07-30 2023-05-30 Abl Ip Holding Llc Knockout mountable light fixture controller assembly

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2531789B1 (fr) * 1982-08-11 1986-11-14 Bourrieres Francis Clavier universel au pas de 19,05 mm pour l'introduction de donnees
US5057807A (en) * 1990-03-19 1991-10-15 Veetronix, Inc. Keyboard switch
EP2624912B1 (fr) * 2010-10-08 2018-04-25 Luxomed Appareil de stimulation locale d'un sujet
JP1504135S (enExample) * 2012-11-30 2017-07-24
CN106298328A (zh) * 2015-05-27 2017-01-04 致伸科技股份有限公司 磁力键盘
DE102017106283A1 (de) * 2017-03-23 2018-09-27 Cherry Gmbh Tastenmodul für eine Tastatur und Verfahren zum Herstellen eines Tastenmoduls für eine Tastatur
CN107017120A (zh) * 2017-05-18 2017-08-04 捷开通讯(深圳)有限公司 一种电子设备及其按键装置

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3763451A (en) * 1971-12-15 1973-10-02 Siemens Ag Control unit for electronic systems
US3818393A (en) * 1972-09-25 1974-06-18 Siemens Ag Control unit for electronic system
USD514072S1 (en) * 2004-02-10 2006-01-31 Industrias Lorenzo, S.A. Push button with light
US20120160642A1 (en) * 2010-12-22 2012-06-28 Hung-Min Liao Switch unit
CN102842459A (zh) * 2012-08-31 2012-12-26 天津大学 一种磁控开关
CN102842458A (zh) * 2012-08-31 2012-12-26 天津大学 一种磁控开关
CN102842458B (zh) * 2012-08-31 2014-11-26 天津大学 一种磁控开关
CN102842459B (zh) * 2012-08-31 2015-01-28 天津大学 一种磁控开关
US11662086B2 (en) 2021-07-30 2023-05-30 Abl Ip Holding Llc Knockout mountable light fixture controller assembly

Also Published As

Publication number Publication date
DE2131336C3 (de) 1973-10-31
DE2131336B2 (de) 1973-04-19
US3652964A (en) 1972-03-28
SE373452B (enExample) 1975-02-03
JPS5429702B1 (enExample) 1979-09-26
DE2131336A1 (de) 1972-05-31
GB1350684A (en) 1974-04-18
FR2114329A5 (enExample) 1972-06-30

Similar Documents

Publication Publication Date Title
US3652963A (en) Push button switch
US3075062A (en) Toggle switch
US4296394A (en) Magnetic switching device for contact-dependent and contactless switching
US3559124A (en) Magnetically actuated reed switches
JP2538991B2 (ja) リモ―トコントロ―ル式回路しゃ断器
US20110109411A1 (en) Sealed magnetically controlled electric switch assembly
JPH05217464A (ja) プッシュ機構付きスライドスイッチ
KR950034328A (ko) 직류 스위칭장치
US3098905A (en) Snap-action switch
JPS641722Y2 (enExample)
US3397372A (en) Proximity-magnetic means for operating microswitches
US3614363A (en) Cam switch unit
US4133991A (en) Limit switch
US3317870A (en) Magnetically operated switches
US3413578A (en) Positive engagement latch for a pushbutton actuator with local and remote release
US3491220A (en) Lighted on-off switch
US3268684A (en) Mechanically operable magnetic reed switch
US2951138A (en) Electric switch actuating mechanism
US4216458A (en) Solid state switch
JPH10172374A (ja) リセット機構付スイッチ
US3403363A (en) Operating means for pushbutton switches and the like having magnetically operable contacts
US3510813A (en) Device for actuation of reed switches
US4001744A (en) Electrical switch
US3914563A (en) Key operated switch
US3236966A (en) Resettable actuator