EP2819140A1 - Kuppelförmige Anordnung und tragbare elektronische Vorrichtung mit kuppelförmiger Anordnung - Google Patents

Kuppelförmige Anordnung und tragbare elektronische Vorrichtung mit kuppelförmiger Anordnung Download PDF

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Publication number
EP2819140A1
EP2819140A1 EP13173957.5A EP13173957A EP2819140A1 EP 2819140 A1 EP2819140 A1 EP 2819140A1 EP 13173957 A EP13173957 A EP 13173957A EP 2819140 A1 EP2819140 A1 EP 2819140A1
Authority
EP
European Patent Office
Prior art keywords
dome
shaped element
substrate
electronic device
concave surface
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.)
Granted
Application number
EP13173957.5A
Other languages
English (en)
French (fr)
Other versions
EP2819140B1 (de
Inventor
Chao Chen
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.)
BlackBerry Ltd
Original Assignee
BlackBerry Ltd
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 BlackBerry Ltd filed Critical BlackBerry Ltd
Priority to EP13173957.5A priority Critical patent/EP2819140B1/de
Priority to CA2855237A priority patent/CA2855237C/en
Publication of EP2819140A1 publication Critical patent/EP2819140A1/de
Priority to HK15106107.0A priority patent/HK1205589A1/xx
Application granted granted Critical
Publication of EP2819140B1 publication Critical patent/EP2819140B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01H13/12—Movable parts; Contacts mounted thereon
    • 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
    • H01H13/702—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 with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
    • H01H13/705—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 with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2215/00—Tactile feedback
    • H01H2215/004—Collapsible dome or bubble
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/09—Flexible integral part of housing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2227/00—Dimensions; Characteristics
    • H01H2227/022—Collapsable dome

Definitions

  • aspects of the invention are directed to handheld electronic device and, more particularly, to handheld electronic devices includes dome-shaped assemblies.
  • handheld electronic devices Numerous types of handheld electronic devices are presently in use. Exemplary handheld electronic devices include personal data assistants (PDAs), handheld computers, two-way pagers and cellular telephones. Many feature wireless communication capability and/or are stand-alone devices that are functional without communication with other devices.
  • PDAs personal data assistants
  • handheld computers two-way pagers
  • cellular telephones Many feature wireless communication capability and/or are stand-alone devices that are functional without communication with other devices.
  • Handheld electronic devices are generally intended to be portable, with many being small enough to fit within a pocket, a belt holster, a briefcase or a purse. As the form factor of such devices has shrunk for improved portability, so has the size of components such as keyboards or keypads.
  • the keyboards or keypads include keys that act as switches for input entry when actuated.
  • one general approach has involved the use of an electrical key in the form of a resilient dome-shaped element that is electrically conductive and is disposed on a circuit board.
  • such a dome assembly is a smooth sector of a hollow sphere.
  • the dome assembly collapses to thereby complete an electrical circuit.
  • the collapsing dome assembly provides a tactile feedback to the user of the handheld electronic device.
  • Such simple sphere segments have been generally effective for their intended purpose but often the tactile feedback is not noticeable.
  • the dome assemblies are often provided with elastomeric or compliant layers that provide for an improved tactile feel or increase the tactile feel of the dome assembly.
  • the elastomeric or compliant layer necessarily increases a thickness or size of the keyboard or keypad.
  • FIG. 1 is a front elevational view of a handheld electronic device in accordance with embodiments
  • FIG. 2 is a schematic depiction of the electronic device of FIG. 1 ;
  • FIG. 3 is a cross-sectional view of a keyboard assembly of the electronic device of FIG. 1 ;
  • FIG. 4 is a plan view of a dome-shaped element of the keyboard assembly of FIG. 3 in accordance with embodiments;
  • FIG. 5 is a side view of the dome-shaped element in accordance with embodiments.
  • FIG. 6 is a graphical depiction of a tactile response curve associated with the dome-shaped element of FIGS. 4 and 5 .
  • the electronic device 4 includes a housing 6, an input apparatus 8, an output apparatus 12 and a processor 16 disposed on or in the housing 6.
  • the input apparatus 8 provides input to the processor 16 and the processor 16 provides output signals to the output apparatus 12.
  • the input apparatus 8 may include a keypad 20 and a navigation input 24.
  • the keypad 20 includes a plurality of keys 28 that are each actuatable to provide input to the processor 16.
  • the navigation input 24 can be an optical pad, a track pad, capacitive input or a track ball to provide navigational and other input to the processor 16.
  • the navigation input 24 may also be translatable to permit selection inputs.
  • the navigation input 24 is able to provide navigational inputs in the vertical direction, i.e., the up-down direction, in the horizontal direction, i.e., the left-right direction, as well as combinations thereof.
  • the keys 28 and the navigation input 24 serve as input members that are actuatable to provide input to the processor 16.
  • the output apparatus 12 may include a display 32, such as a liquid crystal display, LED display, e-ink display, etc.
  • many of the keys 28 have a plurality of letters, i.e., linguistic elements, assigned thereto. For instance, one of the keys 28 represents the letters "A" and "S” while another key 28 represents the letters "Q” and "VV".
  • the letters of the example keypad 20 are illustrated as being in an arrangement of a reduced QWERTY keyboard. It is to be appreciated, however, that although the example shown in FIG. 1 utilizes a reduced keypad 20, the keys 28 may be provided as a regular (non-reduced) keypad or other combination of one or more individual keys either integral to an electronic device or part of a separate keyboard assembly external to an electronic device.
  • Examples of other input members not expressly depicted herein would include, for instance, a mouse or trackwheel for providing navigational inputs. Still other example input members would include a touch-sensitive display, a stylus pen for making menu input selections on a touch-sensitive display displaying menu options and/or soft buttons of a graphical user interface (GUI), hard buttons disposed on the housing 6 of the handheld electronic device 4, and so on. Examples of other output devices would include a touch-sensitive display, an audio speaker, and so on.
  • GUI graphical user interface
  • the processor 16 includes a processing unit 36 and a memory 40.
  • the processing unit 36 may be, for example, a microprocessor ( ⁇ P) that interfaces with the memory 40.
  • the memory 40 can be any one or more of a variety of types of internal and/or external storage media, such as RAM, ROM, EPROM(s), EEPROM(s) and FLASH provide a storage register, i.e., a machine readable medium, for data storage.
  • the memory 40 can be volatile memory or nonvolatile memory.
  • the memory 40 has a number of routines 44 that are stored therein and which are executable on the processing unit 36.
  • the deformable dome assembly 50 includes a multiple-sloped dome-shaped element 60 (in some cases, a plurality of dome-shaped elements 60) that is (are) disposable in a keyboard assembly 70 of the input apparatus 8 of the electronic device 4 of FIGS. 1 and 2 .
  • the keyboard assembly 70 may be regarded as a component of the dome assembly 50 and includes a substrate 71, spacers 72 and a dome-overlaying laminate 73.
  • the substrate 71 is a generally planar or substantially flat surface on which the dome-shaped element 60 is operably disposed.
  • the substrate 71 may be, but is not required to be, provided as a printed circuit board (PCB) or as a flexible print circuit (FPC). Where an FPC is employed, the keyboard assembly 70 may further include a stiffening layer 74.
  • the spacers 72 are disposed on the substrate 71 to at least partially surround the dome-shaped element 60.
  • the laminate 73 may be include a layer of soft Polyethylene terephthalate (PET) film and is supported on at least the spacers 72 such that the laminate 73 is disposed at a distance from the substrate 71. This distance may be substantially similar to the height of the spacers 72. Adhesive may be provided on either side of the spacers 72 to improve adherence between the spacers 72 and the substrate 71 and between the spacers 72 and the laminate 73.
  • PET Polyethylene terephthalate
  • height of the spacers 72 may be lower than the height of the dome-shaped element 60. In such cases, once the keyboard assembly 70 is formed, the spacers 72 effectively pull the laminate 73 down toward the substrate 71 and over the dome-shaped element 60.
  • the dome-shaped element 60 is operably interposed between the substrate 71 and the laminate 73 and includes a convex surface 61 that faces the laminate 73 and a concave surface 62 opposite the convex surface 61.
  • the concave surface 62 originates at a center portion 63 of the dome-shaped element 60 and terminates at a periphery (or peripheral portion) 64 of the dome-shaped element 60.
  • the concave surface 62 includes an annular array of spring-like or elastic elements 65 that extend from the center portion 63 to the periphery 64.
  • at least one or more of the elastic elements 65 includes at least a first portion 66 and a second portion 67.
  • the first portion 66 has a first slope S1 and is proximate to the center portion 63.
  • the second portion 67 has a second slope S2 and is proximate to the periphery 64.
  • each elastic element 65 may be similarly shaped and separated from adjacent elastic elements 65 by uniform distances. However, it is to be understood that this is not required and that more or less elastic elements 65 may be provided.
  • the annular array of the elastic elements 65 is illustrated as being substantially balanced and uniformly arranged about the center portion 63, it is to be understood that this is not necessary and that the elastic elements 65 need not be balanced or uniformly arranged about the center portion 63.
  • first contact pads 710 and second contact pads 711 which are respectively associated with one or more circuits of the electronic device 4 of FIGS. 1 and 2 , may be disposed on the substrate 71.
  • the periphery 64 of the dome-shaped element 60 may be disposed in contact with, for example, the first contact pads 710 and the center portion 63 may be disposed at a distance from the second contact pad 711. That is, in accordance with embodiments, the center portion 63 and the concave surface 62 as a whole is centered at the second contact pad 711.
  • the concave surface 62 may be at least partially formed of a conductive material, such as metal or a metallic alloy, and is formed to be deflectable as shown in FIG. 5 between an un-deflected position 610, an intermediately deflected position and a deflected position 612.
  • the concave surface 62 is biased to remain in the un-deflected position 610 (see FIG. 5 ).
  • the concave surface 62 is deflectable, as noted above, from the un-deflected position 610 in response to a pressing force being applied by a user or some other externality to the center portion 63 in a direction leading to the second contact pad 711. This pressing force causes the concave surface 62 to deflect toward and to eventually assume the deflected position 612 (see FIG. 5 ).
  • the center portion 63 may be disposed in contact with the second contact pad 711 while the periphery 64 remains in contact with the first contact pads 710.
  • the conductive material of the concave surface 62 may be configured to complete the one or more circuits of the electronic device 4 to thereby affect an operation of the electronic device 4.
  • the one or more circuits of the electronic device 4 may be open with the concave surface 62 remaining disposed at or returning to the un-deflected position (i.e., default) 610 in accordance with the bias provided by the elastic elements 65.
  • At least a portion 630 of the center portion 63 may be planar or substantially flat such that the portion 630 can abut and lie flush against the laminate 73. In some cases, the portion 630 may be adhered to the laminate 73 as well. The laminate 73 and the portion 630 may also be substantially parallel with the substrate 71.
  • the first slope S1 and the second slope S2 may be defined with respect to the slope (or lack thereof) of the center portion 63. In addition, the second slope S2 may be greater than or exceed the first slope S1. It is to be understood, however, that the entirety of the center portion 63 need not be planar or substantially flat and may include various type of surface features.
  • Such surface features may include, for example, depressions 631, micro-half cuts, dimples, etc., in the convex surface 61 that can be used to identify for a user where the center portion 63 is located and to improve the tactile feel of the dome assembly 50 as a whole or to collect dust.
  • the concave surface 62 may have a wagon-wheel shape with the center portion 63 acting as a hub, the elastic elements 65 acting as spokes and the periphery 64 acting as the tire.
  • the elastic elements 65 may all have similar shapes. That is, at least one of the first portions 66 may have substantially similar dimensions as another of the first portions 66 and at least one of the second portions 67 may have substantially similar dimensions as another of the second portions 67.
  • the center portion 63 deforms linearly during a ramp-up stage with the linear deformation aided by the tapering of the at least one of the first portions 66. That is, the tapering of the at least one of the first portions 66 provides space in between the elastic elements 65 that permits the center portion 63 to deform into the volume defined by the concave surface 62 in the un-deflected or default position 610.
  • the ramp-up stage is extended as compared to conventional dome assemblies and thus improves a tactile response of the dome assembly 50.
  • non-linear deformation in the form of dome-buckling occurs along the first portions 66 and/or at the connections between the first portions 66 and the corresponding second portions 67.
  • the periphery 64 may have a diameter of about 4-5 millimeters (mm), a height of the concave surface 62 may be about 0.26-0.36 mm and a thickness of the concave surface 62 may be about 0.035-0.06 mm.
  • the dome-shaped element 60 as a whole provides for a travel distance between the un-deflected position 610 and the deflected position 612 of about 0.22-0.30 mm. Over that travel distance, the dome-shaped element 60 may be configured to provide a non-linear tactile response to a deflection force identified above as the pressing force.
  • the non-linear tactile response is illustrated in FIG. 6 and includes a first part 100 and a second part 101.
  • the first part 100 includes the ramp-up stage from an initial point of zero pressing force to a peak pressing force (PF) and is associated with a spring or linear deformation of the center portion 63 as aided by the first portions 66.
  • the first part 100 terminates at a deflection of the concave surface 62 of about 0.14-0.28 mm and, more particularly, at a deflection of about 0.22 mm.
  • the second part 101 is then associated with a dome-buckling collapse of the first portion 66 of the at least one of the elastic elements 65.
  • the second stage terminates at a point proximate to 0.28 mm of travel distance at which the center portion 63 contacts the second contact pads 711 and the second portion 67 of the at least one of the elastic elements 65 resists further pressing force (RF).
  • the dome-shaped element 60 provides for multiple advantages over conventional dome assemblies.
  • the advantages include, but are not limited to, providing a dome-shaped element 60 for a keyboard assembly 70 that provides a non-linear tactile response to a 2 newtons (N) or less pressing/deflection force but does not include an elastomeric or compliant layer between the dome-shaped element 60 and the laminate 73.
  • N 2 newtons
  • the keyboard assembly 70 can be thinned as compared to keyboards with conventional dome assemblies without sacrificing tactile feel.
  • the relative sizes of the center portion 63, the first portions 66 and the second portions 67 provide for an extended ramp-up stage of the first part 100 of the non-linear tactile response, which, as noted above, terminates at a deflection of the concave surface 62 of about 0.14-0.28 mm.
  • the dome-shaped element 60 is formed such that the keyboard assembly 70 in thinned but permits increased ramp-up and travel distance as compared to convention dome assemblies in spite of the thinning. The increased ramp-up and travel distance provide for improved tactile feel.
  • a dome-shaped element disposable in a keyboard of an electronic device includes a concave surface originating at a center and terminating at a periphery.
  • the concave surface includes an annular array of elastic elements extending from the center to the periphery. At least one of the elastic elements includes a first portion with a first slope proximate to the center and a second portion with a second slope proximate to the periphery.
  • the concave surface is deflectable between an un-deflected position and a deflected position and is configured to affect an operation of the electronic device in the deflected position.
  • the dome-shaped element includes a concave surface originating at a center and terminating at a periphery disposed in contact with the first contact pad.
  • the concave surface includes an annular array of elastic elements extending from the center to the periphery. At least one of the elastic elements includes a first portion with a first slope proximate to the center and a second portion with a second slope proximate to the periphery.
  • the concave surface is deflectable between an un-deflected position and a deflected position and is configured such that the center contacts the second contact pad to thereby affect an operation of the electronic device in the deflected position.
  • a keyboard assembly for an electronic device includes a substrate, a laminate disposed at a distance from the substrate and a multiple-sloped dome interposed between the laminate and the substrate.
  • the multiple-sloped dome includes a peripheral portion contacting the substrate and a central portion contacting the laminate and is formed such that the central portion is biased to remain separated from the substrate and to provide a non-linear tactile response to a pressing force applied to the laminate to thereby urge the central portion into contact with the substrate.
  • a dome-shaped element for use with a handheld electronic device and includes concave surface as described above but does not include an elastomeric or compliant layer between the concave surface and the laminate.
  • the dome-shaped element is therefore relatively thin but nevertheless provides for an increased ramp-up deflection stage and a non-linear response to a pressing/deflection force.

Landscapes

  • Push-Button Switches (AREA)
  • Input From Keyboards Or The Like (AREA)
EP13173957.5A 2013-06-27 2013-06-27 Kuppelförmige Anordnung und tragbare elektronische Vorrichtung mit kuppelförmiger Anordnung Active EP2819140B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP13173957.5A EP2819140B1 (de) 2013-06-27 2013-06-27 Kuppelförmige Anordnung und tragbare elektronische Vorrichtung mit kuppelförmiger Anordnung
CA2855237A CA2855237C (en) 2013-06-27 2014-06-26 Dome-shaped assembly and handheld electronic device including dome-shaped assembly
HK15106107.0A HK1205589A1 (en) 2013-06-27 2015-06-26 Dome-shaped assembly and handheld electronic device including dome- shaped assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13173957.5A EP2819140B1 (de) 2013-06-27 2013-06-27 Kuppelförmige Anordnung und tragbare elektronische Vorrichtung mit kuppelförmiger Anordnung

Publications (2)

Publication Number Publication Date
EP2819140A1 true EP2819140A1 (de) 2014-12-31
EP2819140B1 EP2819140B1 (de) 2019-05-08

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EP13173957.5A Active EP2819140B1 (de) 2013-06-27 2013-06-27 Kuppelförmige Anordnung und tragbare elektronische Vorrichtung mit kuppelförmiger Anordnung

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EP (1) EP2819140B1 (de)
CA (1) CA2855237C (de)
HK (1) HK1205589A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106104429A (zh) * 2015-02-13 2016-11-09 先进矽有限公司 带有尖端压力传感器的有源笔

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0764958A2 (de) * 1995-09-21 1997-03-26 Fuji Polymertech Co., Ltd Kalottenförmige Kurzhub-Scheibenfeder
EP1225607A2 (de) * 2001-01-18 2002-07-24 Alps Electric Co., Ltd. Kuppelförmiger Kontakt
US20020130024A1 (en) * 2001-02-14 2002-09-19 Kenichiro Kawaguchi Dome switch
JP2010146737A (ja) * 2008-12-16 2010-07-01 Fuji Denshi Kogyo Kk ２段クリック付き接点ばね

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4751351A (en) * 1987-05-11 1988-06-14 Eaton Corporation Switch assembly providing tactile feel
US20110242041A1 (en) * 2010-04-01 2011-10-06 Nokia Corporation Method and Apparatus for Performing a Function

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0764958A2 (de) * 1995-09-21 1997-03-26 Fuji Polymertech Co., Ltd Kalottenförmige Kurzhub-Scheibenfeder
EP1225607A2 (de) * 2001-01-18 2002-07-24 Alps Electric Co., Ltd. Kuppelförmiger Kontakt
US20020130024A1 (en) * 2001-02-14 2002-09-19 Kenichiro Kawaguchi Dome switch
JP2010146737A (ja) * 2008-12-16 2010-07-01 Fuji Denshi Kogyo Kk ２段クリック付き接点ばね

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106104429A (zh) * 2015-02-13 2016-11-09 先进矽有限公司 带有尖端压力传感器的有源笔

Also Published As

Publication number Publication date
EP2819140B1 (de) 2019-05-08
CA2855237A1 (en) 2014-12-27
HK1205589A1 (en) 2015-12-18
CA2855237C (en) 2021-11-16

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