EP0221997A1 - Commutateur a bouton-poussoir illumine - Google Patents

Commutateur a bouton-poussoir illumine

Info

Publication number
EP0221997A1
EP0221997A1 EP19860903779 EP86903779A EP0221997A1 EP 0221997 A1 EP0221997 A1 EP 0221997A1 EP 19860903779 EP19860903779 EP 19860903779 EP 86903779 A EP86903779 A EP 86903779A EP 0221997 A1 EP0221997 A1 EP 0221997A1
Authority
EP
European Patent Office
Prior art keywords
subassembly
switch
lamp
actuator
module
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.)
Withdrawn
Application number
EP19860903779
Other languages
German (de)
English (en)
Inventor
Mark S. Schlosser
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.)
Bell Industries Inc
Original Assignee
Bell Industries 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
Priority claimed from US06/733,698 external-priority patent/US4635167A/en
Priority claimed from US06/733,709 external-priority patent/US4656323A/en
Application filed by Bell Industries Inc filed Critical Bell Industries Inc
Publication of EP0221997A1 publication Critical patent/EP0221997A1/fr
Withdrawn legal-status Critical Current

Links

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
    • H01H13/023—Light-emitting indicators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/16—Contacts characterised by the manner in which co-operating contacts engage by abutting by rolling; by wrapping; Roller or ball contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5805—Connections to printed circuits
    • 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
    • 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
    • H01H13/52—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 immediately upon removal of operating force, e.g. bell-push switch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/054—Optical elements
    • H01H2219/056—Diffuser; Uneven surface
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/054—Optical elements
    • H01H2219/06—Reflector
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2223/00—Casings
    • H01H2223/054—Mounting of key housings on same printed circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/16—Indicators for switching condition, e.g. "on" or "off"
    • H01H9/161—Indicators for switching condition, e.g. "on" or "off" comprising light emitting elements
    • H01H9/162—Means to facilitate removal or replacement of light-emitting elements

Definitions

  • This invention relates to an illuminated push button switch module intended to be actuated by finger pressure and particularly suited for use in integrated panel displays of the type widely employed in aircraft, marine, and various industrial applications.
  • Integrated display panels are used in a myriad of applications for controlling diverse electrical functions. Such panels typically consist of a rear printed circuit board having a plurality of push button switches mounted thereon and a front apertured plate overlaying the circuit board. Typically, a lamp, e.g. incandescent bulb, is -mounted on the circuit board adjacent each switch for illuminating a translucent chip positioned in an aperture in the front plate.
  • a lamp e.g. incandescent bulb
  • the present invention is directed to a small illuminated push button switch module which can be readily mounted on a printed circuit board and subsequently easily removed for replacement or repair.
  • the switch module is comprised of a switch subassembly and a lamp subassembly.
  • the switch subassembly is configured with multiple female connectors adapted to be physically 'mounted on and electrically connected to conductive pins secured to the circuit board.
  • the lamp subassembly is configured for detachable spring mounting on the switch subassembly. The spring mounting enables a user to apply finger -2- pressure to the lamp subassembly to in turn actuate the switch subassembly.
  • the perimeter of the lamp subassembly is smaller than the perimeter, in a parallel plane, of the switch subassembly, thereby enabling an apertured front plate to be secured parallel to the circuit board to sandwich the switch subassembly therebetween while also allowing the lamp subassembly to project forwardly through an aperture in the front plate.
  • each ⁇ lamp subassembly has an incandescent bulb mounted therein electrically connected to a pair of contact pads which automatically mate with a pair of spring contacts when the lamp subassembly is properly mounted on the switch subassembly.
  • each spring contact is formed on the end of a substantially rigid arm cantilevered from an end coil of a coil spring.
  • the rigid arm provides a predictable reaction force to the depression of the lamp subassembly and assures a good low resistance nonsliding contact between each spring contact and its mating contact pad.
  • each lamp subassembly is mounted so that a user can, from the front side of the apertured plate and using only his hands, detach the lamp subassembly from its switch subassembly in order to relamp the switch module.
  • the switch subassembly includes a pair of fixedly mounted spaced contacts and a conductive ball mounted for movement into and out of bridging engagement with the contacts.
  • the ball movement is controlled by a nonconductive selectively movable actuator.
  • the aforementioned nonconductive actuator is coupled to a push button and to a toggle mechanism which produces a reaction force on the push button to thus provide an appropriate tactile feedback to the user to indicate when the switch contacts are bridged.
  • the nonconductive movable actuator comprises a plunger mounted for linear movement between a spring established quiescent position and a user established depressed position.
  • the plunger carries a projection which in the quiescent position engages the ball to prevent it from bridging the switch contacts.
  • the projection moves to a noninterfering position to permit the ball to move into bridging engagement against the switch contacts.
  • the plunger is coupled to ' a spring urged toggle arm mounted for pivotal movement.
  • a spring urged toggle arm mounted for pivotal movement.
  • an inclined surface thereon bears -against the toggle * arm to pivot it gradually from its quiescent position.
  • the toggle arm supplies an increasing reaction force to the plunger as it moves toward a threshhold point. Thereafter, as the toggle arm moves through the threshold point, the reaction force abruptly diminishes to provide a "snap" feel to a user depressing the plunger.
  • a lamp housing having a reflector cavity whose internal surface forms a parabola truncated by a flat metalized diffraction grating.
  • the cavity internal surface is also preferrably metalized to enhance its reflectivity.
  • an incandescent bulb mounted between the diffraction grating and the translucent chip is oriented so that its filament lies in a plane extending T/US86/01006
  • a translucent attenuator is mounted on the bulb glass envelope between the filament and the translucent chip to prevent the filament from creating a bright spot when viewed from the front of the translucent chip.
  • Figure 1A is an exploded isometric view of a portion of an integrated display panel and Figure IB is a schematic sectional view, both showing a preferred switch module embodiment and its relationship to a circuit board and an ' apertured front plate;
  • FIG. 2 is an exploded isometric view of the switch module of Figures 1A and IB depicting the lamp subassembly and switch subassembly thereof;
  • Figure 3 is an exploded isometric view of the lamp subassembly of Figure 2;
  • Figure 4 is a plan view of the lamp subassembly;
  • Figure 5 is a sectional view taken substantially along the plane 5-5 of Figure 4;
  • Figure 6 is an exploded isometric view of the switch subassembly of Figure 2;
  • Figure 7 is a plan view generally depicting the mechanical and electrical interface between the lamp and switch subassemblies
  • Figure 8 is a sectional view taken substantially along the plane 8-8 of Figure 7;
  • Figure 9 is a plan view of the switch subassembly in its normally open state
  • Figure 10 is a sectional view taken substantially along the plane 10-10 of Figure 9 showing the actuator in its quiescent undepressed position; -5-
  • Figure 11 is a plan view of the switch subassembly in its closed state.
  • Figure 12 is a sectional view taken substantially along the plane 12-12 of Figure 11 showing the actuator in its depressed position.
  • Figure 1A illustrates a portion of an integrated display panel 40 incorporating one or more illuminated push button switch modules 50 in accordance with the invention.
  • the display panel 40 further includes a rear printed circuit board • 60 and an apertured front plate 70.
  • the switch module 50 is comprised of a switch subassembly 74 and a lamp subassembly 76.
  • a switch subassembly 74 is essentially planar in shape and is mounted parallel to the front or upper surface 78 of the circuit board 60 with a depending portion 75 of the subassembly 74 fitting closely in an opening 77 in the board 60.
  • the lamp subassembly 76 is also essentially planar in shape* and is spring mounted on the switch subassembly 74 for limited reciprocal displacement (arrow 79, Figure IB), essentially toward and away from the switch subasssembly 74. A user, by applying downward finger pressure on the lamp subassembly 76 actuates the switch subassembly in a manner to be described hereinafter.
  • the lamp subassembly 76 additionally functions as an illuminated indicator for the switch module 50 and can be readily detached from the switch subassembly 74 for relamping. /01006
  • FIG. -6- Figure IB illustrates two switch modules 50, the module on the right being depicted in its quiescent position and the module on left in its actuated position.
  • the switch subassembly 74 has a larger perimeter than the lamp subassembly 76 so that the apertured front plate 70 can bear against the switch subassembly 74 while enabling the lamp subassembly 76 to pass through an aperture 80 in the plate 70.
  • the rear face 82 of the plate 70 around the aperture 80 engages the upper edge surface of the switch subassembly 74 enabling the plate 70 to clamp the switch assembly 74 against the front surface 78 of the circuit board 60.
  • the switch subassembly 74 is basically comprised of a switch housing 100 defining an internal cavity 101 which accommodates the components of a switch and tactile feedback mechanism, generally designated as 102.
  • Four female connectors 104 are preferably press fit into openings in the housing 100 for receiving and making electrical connection to conductive pins 106 soldered and/or staked to the upper surface 78 of aforementioned circuit board 60.
  • the housing 100 defines a pair of guide channels 110 and 112 to respectively accommodate first and second mounting retainers 114, 116.
  • the mounting retainers 114, 116 are supported within the guide channels 110, 112 on springs 120 enabling the retainers 114, 116 to move reciprocally in a direction perpendicular to the nominal plane of the housing 100.
  • a cover plate 130 is provided to fit over the housing cavity to cover the switch and tactile feedback mechanism 102.
  • the cover plate 130 has an opening 132 for accommodating the upper end of a plunger 134.
  • the plunger 134 forms -7- part of the actuator of the switch and tactile feedback mechanism 102.
  • the lamp subassembly 76 includes a substantially rectangular frame 150 having a first sidewall defining an opening 152.
  • a retainer pin 156 extends outwardly from the first sidewall of a housing 157 fitted within the frame 150.
  • the retainer pin 156 is intended to be detachably received within the jaws of a retainer clip 160 formed on the upper edge of mounting retainer 116.
  • the second sidewalls of the frame 150 and housing 157 (hidden in Figure 2) are identical to the .illustrated first sidewalls and thus include a retainer pin for coupling to a retainer clip on mounting retainer 114.
  • the lamp subassembly frame 150 defines a rectangular window 162 closed by a translucent chip 164.
  • the chip 164 can bear suitable indicia to identify the function of the related switch subassembly, e.g. HEATER.
  • the lamp subassembly 76 includes an energizable light source, e.g. incandescent bulb, mounted within the housing 157 beneath the window 162 to back light the translucent chip 164.
  • a lamp subassembly 76 in the quiescent position can be manually depressed (arrow 79) to in turn depress the aforementioned plunger 134 to actuate the switch and tactile feedback mechanism 102.
  • Manual depression of the lamp subassembly 76 compresses the springs 120, which, when the depressing force is removed, return the lamp subassembly 76 to its quiescent state when the depressing force is removed.
  • the lamp subassembly 76 includes a light source for back lighting the translucent chip 164. As will be discussed hereinafter, electrical power for the light source within the lamp subassembly 86/01006
  • the subassembly is comprised of the aforementioned housing 157 which is substantially rectangular in shape and includes first and second sidewalls 200 and 202.
  • pins 204 and 206 extend from each of - the sidewalls. As will be seen hereinafter, whereas retainer pins 156 ' function to detachably retain the lamp subassembly 76 to the switch subassembly 74, the pins 204 and 206 function to retain the lamp housing 157 to the lamp housing frame 150.
  • the housing 157 defines an open internal cavity 210.
  • the interior surface 212 of the cavity in vertical cross section ( Figure 5) , is substantially parabola shaped, truncated by a central circular opening 214.
  • a small lead .access opening 216 is formed in the interior surface 212 in close proximity to the opening 214.
  • the lamp subassembly 76 further includes a circuit board 220 adapted to be mounted immediately beneath the lamp housing 157, as depicted in Figure 5. More particularly, the circuit board 220 is supported beneath housing 157 to close the aforementioned central circular opening 214 and to support a flat disk 224 thereon.
  • the disk 224 has a plurality of very fine grooves 226 formed on the upper surface 228 -9- thereof. The grooves, preferably in a radiating spoke pattern, form a circular diffraction grating.
  • the upper surface 228 of disk 224, as well as the parabola shaped interior surface 212, is preferably metalized in a manner to enhance uniform reflectivity, as will be further discussed hereinafter.
  • the disk 224 is supported on the upper surface 221 of circuit board 200.
  • the circuit boards lower surface 230 defines first and second conductive paths 232, 234 extending from lead openings 236, 238 to contact pad areas 240, 242.
  • the contact pads 240, 242 are automatically engaged by spring contacts to electrically connect the pads to the outer connectors 104 depicted in Figure 2.
  • an energizable light source is provided, preferably an incandescent bulb 250 having first and second leads 252 and 254.
  • the leads 252 and 254 are insertable through the access opening 216 and into the circuit board openings 236 and 238 for connection to the conductive paths 232, 234.
  • the bulb 250 By optimally distributing the bulb illumination over the entire reflective surface, a more uniform light intensity is produced to back light the translucent chip 164. Additionally, in order to acheive uniform intensity and minimize shadows, it is preferable that the bulb 250 have a clear glass -10- envelope 260 and that the bulb leads 252, 254 exit directly through the access opening 216. Still further, in order to enhance the uniformity of the light reflected through chip 164 and to avoid the appearance of a bright spot directly from the filament 258, it is desirable to deposit a small amount of translucent diffuser material 264 on the glass envelope 260 immediately above the filament 258.
  • the aforementioned translucent chip 164 preferably comprises a substantially rigid piece of diffuser material, either clear or colored. Indicating indicia can be provided on the chip 164 by screening opaque characters or symbols thereon. With the chip 164 overlaying the housing cavity 210, light from the bulb 250 wil-l be efficiently reflected from the diffraction grating surface 228 and interior surface 212 through the chip 164. By optimally orienting the bulb filament 258 * and utilizing the diffuser material 264, a substantially uniform relatively high intensity light field will be reflected over the entire chip area. The utilization of. the diffraction grating disk 224, in conjunction with the truncated parabolic surface 212, forms * a very low profile, short depth, reflector which very efficiently transmits the illumination from bulb 250 through the chip 164.
  • the lamp subassembly 76 is held together by the aforementioned lamp housing frame 150.
  • the frame 150 comprises an essentially open rectangular structure including sidewalls 280, 282 and an overhanging upper lip 290 surrounding the aforementioned window 162.
  • the side walls 280, 282 are identically formed and, and as can best be seen in Figure 3, include the aforementioned opening 152 and first and second pin slots 292, 294.
  • the pin slots 292 and 294 function to slideably receive and accommodate the aforementioned pins 204, 206 extending from the side walls of housing 157.
  • the frame 150 as well as the housing 157, -11- preferably comprise closely dimensioned molded plastic parts such that the frame 150 can be manually pressed down on the housing 157 to seat the pins 204, 206 in the frame slots 292, 294 to form an integrated substantially tight package.
  • Fingernail grooves 296 are preferably formed in the outer surfaces of side walls 280, 282 of frame 150.
  • the fingernail grooves extend above the front plate 70, as depicted in Figure IB, enabling the frame 150 to be grasped by a user from the front of the plate 70.
  • a user can detach the entire lamp subassembly 76 from the switch subassembly mounting retainers 114, 116.
  • the fingernail grooves 296 facilitate the detachment of the frame 150 from the lamp housing 157.
  • the switch subassembly includes the aforementioned switch housing 100 which is substantially planar in form and rectangular in shape.
  • the housing 100 is essentially comprised of a center section 300 which contains the aforementioned internal cavity 101 for accommodating the aforementioned switch and tactile feedback mechanism 102.
  • the section 300 includes first and second side walls 302 and 304. Outer walls 306 and 308 are respectively spaced from the side walls 302 and 304 to respectively define therebetween the aforementioned guide channels 110, 112 for accommodating the mounting retainers 114, 116.
  • each of the mounting retainers 114, 116 is mirror images of one another and each is configured to fit within one of the guide channels 110,112 for sliding movement therein. More particularly, each of the mounting retainers 114, 116 comprises an elongated member having an upper surface 310 having a pair of closely spaced opposed jaws 312, 314 extending therefrom.
  • the mounting retainers 114, 116 preferably comprise molded plastic parts of appropriate material to enable the extending jaws 312 and 314 to flex resiliently outward slightly to enable the aforementioned retainer pins 156 to press past the inwardly extending opposed jaw ends 318.
  • Each mounting retainer 114, 116 also includes first and second recesses 330 and 332 for respectively accommodating the upper ends of coil springs 334 and 336.
  • the lower end of coil spring 334 fits over and is retained on stud 340 formed in- the floor of a guide channel 110, 112, as is best depicted in Figure 8.
  • the lower end of coil spring 336 fits around and is electrically coupled to female connector 346, as is also best illustrated by Figure 8.
  • Connector 346 comprises one of " the female end connectors 104 previously mentioned in the description of Figure 2.
  • Connector 346 physically accommodates and is electrically connected to one of the conductive pins 106 affixed to the aforementioned circuit board 60.
  • each spring 336 is formed, as depicted in Figure 8, with a cantilevered arm 364 extending from its upper coil.
  • the arm 364 is preferably integrally formed with the end coil of the spring 336 and terminates in a U-shaped contact 366 positioned to engage one of the contact pads 240, 242 on the under side of the lamp assembly circuit board 220.
  • each contact pad, e.g. 242 will engage the U-shaped terminal contact 366 of a cantilevered spring arm 364.
  • the arm 364 is essentially rigid such that it primarily flexes around a line through the axis of coil spring 336. In this manner, the terminal contact 366 and contact pad 242
  • the plunger 134 preferably comprises an integral device having an upper portion including a head 400 and a flange 402 spaced therefrom. ..
  • the head 400 extends above cover plate 130 and flange 402 is supported within opening 132 extending into boss 404 depending from the cover plate 130 ( Figure 10).
  • An O-ring 406 is carried between the head 400 and flange 402 to seal opening 132.
  • the lower portion of the plunger 134 includes a shaft 408 which extends through a central opening of an actuator member 412.
  • the shaft 408 is secured to actuator member 412 , as by lock washer 414.
  • -14- plunger 134 and actuator member 412 are essentially locked together so that finger pressure applied to the lamp subassembly 76 translucent chip 164 displaces plunger 134 and actuator member 412, i.e. as depicted by arrows 420 in Figure 10.
  • Figure 10 depicts the actuator member 412 in its quiescent upper position.
  • Figure 12 depicts the actuator member 412 in its depressed lower position.
  • the actuator member 412 controls a switching mechanism such that the switch is normally open when the actuator member 412 is in its quiescent position ( Figure 10) and is closed when the actuator member 412 is in its depressed position ( Figure 12).
  • the aforementioned switch and tactile feedback mechanism 102 is comprised of two portions; namely, a switch portion 421 and a tactile feedback portion 422 ( Figure 9).
  • the switch portion 421 includes switch contacts 424, 426 which are mounted within the housing recess 101 so that they are aligned with and overlay a guide groove 430.
  • the switch contacts 424, 426 include terminal portions 432, 434 which connect electrically to female connectors 440, 442, i.e. the two central connectors of previously referred to connectors 104 in Figure 2.
  • Connectors 440, 442 are mounted with connector positioning holes 444 in housing 100.
  • the switch portion 420 further includes an electrically conductive member 448, preferably a gold plated ball, mounted for linear displacement with the guide groove 430 under the urging of a coil spring 450. In the absence of any interference, the spring 450 urges the ball 448 into engagement with the contact 424, 426 to thus electrically connect connectors 440 and 442.
  • an electrically conductive member 448 preferably a gold plated ball
  • the actuator member 412 is shaped so that when in its quiescent position ( Figure 10) it interferes with the ball 448 and blocks it from electrically bridging contacts 424, 426. When depressed, the -15- actuator member moves out of the way to permit the spring 450 to displace the ball 448 into engagement with the contacts 424, 426. More particularly, the actuator member 412 includes a radially extending projection 460 including a ramp portion 462 and end portion 464. Note in Figure 10 that the end portion 464 of the projection 460 extends through the gap between the spaced contacts 424, 426 to engage the ball 448 to block it from engaging contacts 424, 426.
  • the tactile feedback portion 422 functions to develop a reaction force to indicate to a user when switch closure has occurred. More particularly, as a user depresses the lamp subassembly 76 toward switch closure, it is desirable for the user to experience a reaction force which increases as the actuator is displaced toward the toggle point and then abruptly diminishes as the switch is closed to thus provide a "snap" feel.
  • This tactile feedback is provided in accordance with the preferred embodiment by elements 470, 472, 474, and 476 which cooperate with a wedge or inclined surface 478 formed on actuator member 412. More particularly, as is best depicted in Figures 9 and 11, element 476 comprises a rocker arm including a rolling pivot portion 479 and an upper surface 480.
  • the rocker 476 can be caused to rock around the rolling pivot 479, mounted for rolling movement in recess 482 in the -16- housing 100.
  • This force is supplied against the surface 480 by a pusher member or plunger 474 having a lower surface 486 which bears against the surface 480 of rocker arm 476 for sliding movement therealong.
  • the plunger 474 is urged against the rocker surface 480 by spring 472 which is held captive between plunger 474 and toggle arm 470.
  • Toggle arm 470 is shaped to define a rolling pivot 490 which is accommodated in a mating recess 492 in housing 100.
  • Toggle arm 470 is provided with an inclined surface 500 mounted for engagement against -inclined surface 478 of actuator member 412.
  • an improved push button switch module has been described herein comprised essentially of a switch subassembly intended to be physically and electrically mounted on a circuit board and a lamp subassembly intended to be detachably mounted on the switch subassembly.
  • a module in accordance with the invention can be accommodated in a very small package occupying, for example, only about a one quarter square inch area (1/2 inch square) on the circuit board.
  • the full vertical or depth dimension of the module can also be accommodated in less than one half inch with the switch subassembly housing comprising about one half of that dimension.
  • the circuit board 60 and cover plate 70 can be very closely spaced, i.e. within about one quarter inch of each other.
  • the lamp subassembly configuration enables a single lamp to provide ample uniform back lighting of a translucent chip, as a consequence of the optimized reflector, and enables a user to readily replace the lamp from the front of the plate 70 using only his fingers.
  • the switch subassembly configuration assures good tactile feedback and good low resistance low bounce switching within a low profile package.
  • the cantilevered contact arms 364 for providing electrical connection to the movably mounted lamp subassembly can comprise separate elements rather than be integral with springs 336.
  • the movable contact member 448 can be other than ball shaped and the tactile feedback mechanism 102 can utilize a linearly displaceable member rather than the pivotally mounted toggle arm 470.

Landscapes

  • Push-Button Switches (AREA)

Abstract

Un module commutateur (50) à bouton-poussoir illuminé comprend un sous-ensemble de lampe (76) et un sous-ensemble commutateur à bouton-poussoir (74). Le sous-ensemble commutateur (74) est physiquement monté sur une plaquette de circuit imprimé (60) et électriquement connecté à celle-ci. Le sous-ensemble de lampe (76) est monté de façon amovible par un ressort sur le sous-ensemble commutateur (74), ce qui permet de presser manuellement le sous-ensemble de lampe (76) pour actionner le sous-ensemble commutateur (74). Le montage à ressort comprend une paire de ressorts hélicoïdaux (334, 336) qui se terminent par des tiges (364) en porte-à-faux de façon à faire contact électrique avec des tampons (240, 242) montés sur le sous-ensemble de lampe (76) et à activer ainsi l'ampoule à incandescence (250) portée par celui-ci. Le sous-ensemble de lampe (76) peut être facilement détaché du sous-ensemble commutateur (74) afin de remplacer l'ampoule.
EP19860903779 1985-05-13 1986-05-08 Commutateur a bouton-poussoir illumine Withdrawn EP0221997A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US73371885A 1985-05-13 1985-05-13
US733709 1985-05-13
US733698 1985-05-13
US733718 1985-05-13
US06/733,698 US4635167A (en) 1985-05-13 1985-05-13 Low profile lamp assembly
US06/733,709 US4656323A (en) 1985-05-13 1985-05-13 Push button electric switch

Publications (1)

Publication Number Publication Date
EP0221997A1 true EP0221997A1 (fr) 1987-05-20

Family

ID=27419179

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19860903779 Withdrawn EP0221997A1 (fr) 1985-05-13 1986-05-08 Commutateur a bouton-poussoir illumine

Country Status (3)

Country Link
EP (1) EP0221997A1 (fr)
AU (1) AU5951086A (fr)
WO (1) WO1986006872A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE68927888T2 (de) * 1989-07-05 1997-08-14 Idec Izumi Corp Schalter mit Anzeiger
GB2242572A (en) * 1990-03-30 1991-10-02 Barcrest Ltd Switch assembly
GB2245427A (en) * 1990-06-21 1992-01-02 Ashley & Rock Ltd Electrical switch accessories
FR2761792B1 (fr) * 1997-04-04 1999-05-14 Schneider Electric Sa Organe de signalisation a diode electroluminescente
US8829375B2 (en) 2011-05-23 2014-09-09 Schlage Lock Company Llc Lighted push button

Family Cites Families (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2962572A (en) * 1958-06-30 1960-11-29 Amalgamated Electric Corp Ltd Low voltage a. c. current switch
US2991343A (en) * 1958-07-07 1961-07-04 Fed Pacific Electric Co Selective switches
US3045082A (en) * 1959-12-14 1962-07-17 Mason Electric Corp Push button switch
US3032620A (en) * 1960-03-07 1962-05-01 Tung Sol Electric Inc Snap action switch
US3072768A (en) * 1960-08-02 1963-01-08 Diehl Mfg Co Built-in switch for insulated portable electric tools
US3267245A (en) * 1964-08-24 1966-08-16 Honeywell Inc Illuminated push button switch relamping arrangement
DE1992091U (de) * 1967-05-29 1968-08-22 Société de Fabrication d'Instruments de Mesure (S.F.I.M.), Massy, Essonne (Frankreich) Druckknopfschalter mit eingebauten Signallämpchen
AT278143B (de) * 1967-06-23 1970-01-26 Naimer H L Elektrische Schalteinrichtung
US3508043A (en) * 1967-08-01 1970-04-21 Gen Electric Locking mechanism
US3517148A (en) * 1968-01-25 1970-06-23 Robertshaw Controls Co Pushbutton switch construction with safety set mechanism
US3491220A (en) * 1968-03-05 1970-01-20 United Carr Inc Lighted on-off switch
US3522402A (en) * 1968-04-18 1970-08-04 Robertshaw Controls Co Illuminated switch construction with releasing slidable cam
US3467802A (en) * 1968-06-21 1969-09-16 Clare Pendar Co Conductor apparatus for switch structure
US3602678A (en) * 1970-03-23 1971-08-31 Robertshaw Controls Co Illuminated pushbutton switch construction means having a safety set and reset mechanism
DE2042271C3 (de) * 1970-08-26 1973-12-20 Gewerkschaft Eisenhuette Westfalia, 4628 Altluenen Bracke fur Kettenkratzförderer
DE2243639C3 (de) * 1972-09-06 1982-05-13 Rudolf Schadow Gmbh, 1000 Berlin Schieberschalter
US3912894A (en) * 1974-04-26 1975-10-14 Westinghouse Electric Corp Convertible switch
US4031345A (en) * 1974-12-18 1977-06-21 Grayhill, Inc. Miniature electrical switch
US3988557A (en) * 1975-01-27 1976-10-26 Illinois Tool Works Inc. Lighted pushbutton electrical switch assembly
US4006333A (en) * 1975-06-11 1977-02-01 Cutler-Hammer, Inc. Higher rated double-pole trigger switch
US4061895A (en) * 1976-01-21 1977-12-06 Cutler-Hammer, Inc. Higher rated double-pole trigger switch
US4131777A (en) * 1977-02-18 1978-12-26 Switchcraft, Inc. Pushbutton electrical switches and pushbuttons therefor
DE2816410A1 (de) * 1978-04-15 1979-11-29 Rafi Gmbh & Co Taster fuer elektrische geraete
DE3013945A1 (de) * 1980-04-11 1981-10-22 Fa. Albrecht Jung, 5885 Schalksmühle Elektrisches installationsgeraet, insbesondere als licht- und/oder signalgeraet ausgebildeter taster
US4350857A (en) * 1980-10-03 1982-09-21 Allen-Bradley Company Illuminated industrial membrane switch
JPS5929931B2 (ja) * 1980-12-09 1984-07-24 オムロン株式会社 安全スイツチ
US4466302A (en) * 1981-09-17 1984-08-21 International Business Machines Corporation Nutating snap action switch mechanism
US4431879A (en) * 1981-10-06 1984-02-14 Nihon Kaiheiki Kogyo Kabushiki Kaisha Illumination-type pushbutton switch construction

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8606872A1 *

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AU5951086A (en) 1986-12-04
WO1986006872A1 (fr) 1986-11-20

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