EP2104126A1 - Clavier avec protection contre l'eau et la poussière - Google Patents

Clavier avec protection contre l'eau et la poussière Download PDF

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Publication number
EP2104126A1
EP2104126A1 EP08152961A EP08152961A EP2104126A1 EP 2104126 A1 EP2104126 A1 EP 2104126A1 EP 08152961 A EP08152961 A EP 08152961A EP 08152961 A EP08152961 A EP 08152961A EP 2104126 A1 EP2104126 A1 EP 2104126A1
Authority
EP
European Patent Office
Prior art keywords
keypad
sealing bead
actuator component
actuators
light guide
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
EP08152961A
Other languages
German (de)
English (en)
Other versions
EP2104126B1 (fr
Inventor
Dietmar Wennemer
Chao Chen
Timothy Herbert Kyowski
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
Research in Motion 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
Priority to AT08152961T priority Critical patent/ATE492898T1/de
Application filed by Research in Motion Ltd filed Critical Research in Motion Ltd
Priority to DE602008004090T priority patent/DE602008004090D1/de
Priority to EP10188124A priority patent/EP2270824B1/fr
Priority to AT10188124T priority patent/ATE533167T1/de
Priority to EP08152961A priority patent/EP2104126B1/fr
Priority to CA2657735A priority patent/CA2657735C/fr
Priority to CN2009200087368U priority patent/CN201893261U/zh
Publication of EP2104126A1 publication Critical patent/EP2104126A1/fr
Priority to HK10101908.7A priority patent/HK1136085A1/xx
Application granted granted Critical
Publication of EP2104126B1 publication Critical patent/EP2104126B1/fr
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
    • H01H13/70—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
    • H01H13/86—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 characterised by the casing, e.g. sealed casings or casings reducible in size
    • 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
    • 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
    • H01H13/88—Processes specially adapted for manufacture of rectilinearly movable switches having a plurality of operating members associated with different sets of contacts, e.g. keyboards
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/036—Light emitting elements
    • H01H2219/044—Edge lighting of layer
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/054—Optical elements
    • H01H2219/062—Light conductor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2223/00—Casings
    • H01H2223/002—Casings sealed
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2229/00—Manufacturing
    • H01H2229/044—Injection moulding
    • H01H2229/048—Insertion moulding

Definitions

  • the present application relates generally to keypads, and more particularly, to a keypad intended for portable or handheld communication devices.
  • the portability and convenience of mobile or handheld communication devices has resulted in their widespread use and popularity.
  • the portability of handheld communication devices also makes them more susceptible to exposure to outdoor elements and hazards, such as moisture (e.g. rain, sleet, and snow), dust, and other environmental elements.
  • the present application is directed generally to a keypad and structure that may provide protection against elements such as water, dust and/or electrostatic discharge.
  • Embodiments according to the present application are generally directed to a keypad assembly and structure configured to preferably provide a seal against environmental elements or agents, such as water/moisture, dust and/or ESD (Electro-Static Discharge).
  • environmental elements or agents such as water/moisture, dust and/or ESD (Electro-Static Discharge).
  • a keypad suitable for use with a mobile communication device and the mobile communication device comprising a mounting substrate
  • the keypad comprising: a base-frame; a plurality of keys operatively coupled to the base-frame; an actuator component positioned with the base-frame, and the actuator component includes an actuator for each of the keys, and each of the actuators are responsive to depression of an associated one of the keys; and the actuator component comprises a sealing bead running along a perimeter portion of the actuator component formed with the actuator component from a flexible material. The sealing bead may be compressed against the mounting substrate during installation to provide a seal or barrier against environmental agents.
  • an actuator component for a keypad comprising: a plurality of actuators and each of the actuators being formed from a first material; a light guide comprising a plastic material co-molded with the plurality of actuators; and a sealing bead formed from the first material, and co-molded with the light guide.
  • a process for manufacturing a keypad insert comprising: providing a plurality of actuators formed of a first material; providing a light guide formed of a second material; providing a sealing bead formed from the first material; bonding together the plurality of actuators, the light guide and the sealing bead using co-molding.
  • Fig. 1 shows in diagrammatic form a keypad according to an embodiment
  • Fig. 2 shows in diagrammatic form the keypad of Fig. 1 mounted on a substrate or carrier component in a communication device;
  • Fig. 3 shows in diagrammatic form a bottom view of a keypad actuator according to an embodiment
  • Fig. 4 is a more detailed view of a portion of the keypad actuator depicted in Fig. 3 ;
  • Fig. 5 is a bottom view of the keypad of Fig. 1 ;
  • Fig. 6 is a more detailed view of a portion of the keypad of Fig. 5 ;
  • Fig. 7 is a partial cross-sectional view of the keypad taken along line 1-1 of Fig. 1 ;
  • Fig. 8 is a bottom view of the keypad of Fig. 5 with a dome overlay in place.
  • Fig. 1 shows in diagrammatic form a keypad assembly according to an embodiment and indicated generally by reference 100.
  • Fig. 2 shows the keypad assembly 100 installed, fitted or otherwise mounted or affixed to a printed circuit board (PCB) or other substrate, carrier or structural member for a communication device (e.g. a mobile or handheld), indicated generally by reference 200.
  • the PCB 200 is configured with key-switches or contacts for the keypad and other electronic components in known manner.
  • the keypad 100 comprises, according to an embodiment, a base-frame or member 102, a plurality of keys indicated by 110, a menu key 112, an ESC key 114, a phone call key 116 and an end phone call key 118.
  • the base-frame or member 102 comprises a structural component which may be formed as a plastic frame (e.g. rigid or semi-rigid), and the keys or groups of keys are operatively coupled to the base frame 102.
  • the keys are configured as a QWERTY type keypad.
  • the keypad 100 may include one or more decoration bars or "frets" 120, indicated individually by references 120a, 120b, 120c and 120d.
  • the frets 120 may be formed as part of the base-frame 102 or attached as separate components.
  • the keypad assembly may include a socket for a "trackball" (indicated by reference 210 in Fig. 2 ) or other pointer moving mechanism, indicated generally by reference 130.
  • the keypad 100 i.e. the base-frame 102
  • the edge structure 140 is configured to function in a light guide.
  • Figs. 3 and 4 shows a keypad actuator component or insert according to an embodiment and indicated generally by reference 300 in Fig. 3 .
  • the keypad actuator or insert 300 is formed from or comprises multiple materials.
  • the keypad actuator 300 comprises a light-guide indicated by reference 310, deflection webs 320 and actuators 330.
  • the light-guide 310 is formed from a clear or semi-clear plastic material (rigid or semi-rigid) that is co-molded with a corresponding deflection web 320 and actuator 330 for each of the keys.
  • the actuators 330 are formed from a resilient material such as silicone material.
  • the deflection webs 320 have enough inherent stiffness to hold the keys in their correct position when not pressed, and to yield enough when a user exerts a downward force on the key to bring the associated actuator 330 in contact with the corresponding key-switch component on the PCB 200 ( Fig. 2 ).
  • the actuators 330 are formed from a flexible material such as silicone rubber, for example, to provide deflection for tactile feedback to a user.
  • each of the actuators 330 comprises a contact dome structure that is configured to function with a dome overlay component, for example, as indicated by reference 800 in Fig. 8 .
  • the dome overlay component 800 provides the interface between the keypad 100 and the PCB 200.
  • the dome overlay component 800 includes key-switches indicated by reference 810 for each of the actuators 330 ( Fig. 3 ).
  • the key-switches 810 are configured to generate a keypad signal on the PCB 200 in response to the depression of the associated actuator 330 and key 110 ( Fig. 1 ) on the keypad 100.
  • the dome overlay 800 also includes openings or cut-outs for LEDs configured to provide a backlighting source.
  • the keypad actuator or insert 300 includes a sealing structure indicated by reference 360.
  • the sealing structure 360 comprises a continuous bead, protrusion or raised ridge which runs around the perimeter of the keypad actuator 300 as depicted in Fig. 3 .
  • the sealing structure 360 is formed from a resilient or a compressible material, such as silicone rubber.
  • the silicon rubber for the sealing structure or ridge 360 is co-molded in the keypad actuator or insert 300, which comprises the light-guide 310, the deflection webs 320 and the actuators 330.
  • the sealing structure 360 is formed from silicone rubber with a height in the range of 0.05 to 0.15 mm and a width in the range of 0.3 to 3.0 mm, although it will be appreciated that other dimensions may be utilized to suit the application.
  • the height of the sealing structure 360 is taken as the height above the edge of the keypad, i.e. the surface of the edge structure 140, for example, as depicted in Fig. 7 .
  • the keypad actuator 300 includes backlight pockets or sockets indicated by reference 350.
  • the backlight pockets 350 receive a light source 352 (e.g. a light emitting diode or LED).
  • the LEDs 352 are mounted on and powered from the PCB 200 ( Fig. 2 ).
  • the keys in the keypad 100 comprise transparent or semi-transparent keycaps that permit passage of light from the light sources 352 to provide a lighted keypad. To prevent light from the backlighting sources (i.e.
  • the base-frame 102 includes the edge structure 140 which serves to provide a backlight shielding function.
  • the edge structure 140 comprises a dark (e.g. black) plastic edge that runs substantially around the perimeter of the keypad 100 or base-frame 102 and functions to block the transmission of light emitted by the light source(s) for backlighting the keypad.
  • the edge structure 140 also serves to define a cavity or compartment which can assist in the positioning and/or insertion of the keypad actuator layer 300.
  • the sealing structure 360 rests on the surface of the PCB 200.
  • a sealing structure 360 formed from silicone rubber allows the seal 360 to be compressed against the surface of the PCB 200, which serves to improve the sealing properties.
  • the keypad 100 includes a space (i.e. a channel or gap) indicated by reference 700.
  • the space or gap 700 runs along the sealing structure 360 and is formed between the edge 140 and the dome overlay.
  • the gap 700 provides a space to allow the sealing structure to be compressed when the keypad is assembled, i.e. a force applied during the keypad assembly procedure.
  • the gap 700 has a height in the range of 0.05 to 0.10 mm. although it will be appreciated that other dimensions may be appropriate.
  • the sealing structure 360 when compressed against the surface of the PCB 200, for example, as depicted in Fig. 7 , provides a seal or barrier to prevent the entry of moisture and/or dust and/or electrostatic discharge into the keypad 100.
  • the keypad actuator 300 is formed from multiple materials using a co-molding process.
  • the deflection webs 320, the actuators 330 and the sealing bead or protrusion 360 are formed from a first resilient or a compressible material such as silicone rubber, and the light guide 310 is formed from a second material such as a rigid or semi-rigid plastic material. According to an embodiment, this allows the sealing bead or protrusion to be formed at the same time as the actuators 330 and an integral element of the keypad actuator 300.
  • the keypad 100 may be installed or implemented with a mobile communication device.
  • the mobile communication device comprises electronic circuitry and components configured and/or assembled on the PCB 200.
  • the electronic circuitry includes a central processing unit or CPU, which operates under the control of a program (i.e. firmware or software) stored in program memory.
  • the CPU is also provided with data memory.
  • the CPU is operatively coupled to the keypad 100 and the trackball 210 ( Fig. 2 ), i.e. input devices, a display module and an audio transducer or speaker.
  • the program memory may include other applications, such as a browser program.
  • the mobile communication device also includes circuitry for wireless communication with a wireless network. The particular implementation details of the mobile communication device will be within the understanding of those skilled in the art, and are therefore not described in further detail.

Landscapes

  • Push-Button Switches (AREA)
  • Input From Keyboards Or The Like (AREA)
  • Switches With Compound Operations (AREA)
  • Telephone Set Structure (AREA)
  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
EP08152961A 2008-03-18 2008-03-18 Clavier avec protection contre l'eau et la poussière Active EP2104126B1 (fr)

Priority Applications (8)

Application Number Priority Date Filing Date Title
DE602008004090T DE602008004090D1 (de) 2008-03-18 2008-03-18 Tastatur mit Wasser- und Staubschutz
EP10188124A EP2270824B1 (fr) 2008-03-18 2008-03-18 Clavier avec protection contre l'eau et la poussière
AT10188124T ATE533167T1 (de) 2008-03-18 2008-03-18 Tastatur mit wasser- und staubschutz
EP08152961A EP2104126B1 (fr) 2008-03-18 2008-03-18 Clavier avec protection contre l'eau et la poussière
AT08152961T ATE492898T1 (de) 2008-03-18 2008-03-18 Tastatur mit wasser- und staubschutz
CA2657735A CA2657735C (fr) 2008-03-18 2009-03-10 Pave numerique avec protection contre l'eau et la poussiere
CN2009200087368U CN201893261U (zh) 2008-03-18 2009-03-18 键盘和用于该键盘的致动器部件以及具有该键盘的移动通信装置
HK10101908.7A HK1136085A1 (en) 2008-03-18 2010-02-24 Keypad with water and dust protection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08152961A EP2104126B1 (fr) 2008-03-18 2008-03-18 Clavier avec protection contre l'eau et la poussière

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP10188124.1 Division-Into 2010-10-19

Publications (2)

Publication Number Publication Date
EP2104126A1 true EP2104126A1 (fr) 2009-09-23
EP2104126B1 EP2104126B1 (fr) 2010-12-22

Family

ID=39339819

Family Applications (2)

Application Number Title Priority Date Filing Date
EP10188124A Active EP2270824B1 (fr) 2008-03-18 2008-03-18 Clavier avec protection contre l'eau et la poussière
EP08152961A Active EP2104126B1 (fr) 2008-03-18 2008-03-18 Clavier avec protection contre l'eau et la poussière

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP10188124A Active EP2270824B1 (fr) 2008-03-18 2008-03-18 Clavier avec protection contre l'eau et la poussière

Country Status (6)

Country Link
EP (2) EP2270824B1 (fr)
CN (1) CN201893261U (fr)
AT (2) ATE533167T1 (fr)
CA (1) CA2657735C (fr)
DE (1) DE602008004090D1 (fr)
HK (1) HK1136085A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2362405A1 (fr) * 2010-02-25 2011-08-31 Research In Motion Limited Claviers pour dispositifs mobiles et leurs procédés de fabrication
US9075576B2 (en) 2010-02-25 2015-07-07 Blackberry Limited Keypads for mobile devices and method of manufacturing the same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205725872U (zh) * 2016-03-17 2016-11-23 中兴通讯股份有限公司 一种按键和终端

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1001443A1 (fr) 1998-11-12 2000-05-17 Matsushita Electric Industrial Co., Ltd Terminal portable
EP1467391A1 (fr) 2003-04-11 2004-10-13 Polymatech Co., Ltd. Feuille à boutons poussoirs et son procédé de fabrication
EP1619703A2 (fr) 2004-07-20 2006-01-25 Polymatech Co., Ltd. Clavier à couches et son procédé de production
EP1737010A1 (fr) 2004-03-25 2006-12-27 Shin-Etsu Polymer Co., Ltd. Organe de couverture pour commutateur bouton-poussoir et methode pour fabriquer celui-ci
WO2008018416A1 (fr) * 2006-08-07 2008-02-14 Sunarrow Limited Feuille de touches, module de touches l'utilisant et procédé de fabrication de feuille de touches

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1001443A1 (fr) 1998-11-12 2000-05-17 Matsushita Electric Industrial Co., Ltd Terminal portable
EP1467391A1 (fr) 2003-04-11 2004-10-13 Polymatech Co., Ltd. Feuille à boutons poussoirs et son procédé de fabrication
EP1737010A1 (fr) 2004-03-25 2006-12-27 Shin-Etsu Polymer Co., Ltd. Organe de couverture pour commutateur bouton-poussoir et methode pour fabriquer celui-ci
EP1619703A2 (fr) 2004-07-20 2006-01-25 Polymatech Co., Ltd. Clavier à couches et son procédé de production
WO2008018416A1 (fr) * 2006-08-07 2008-02-14 Sunarrow Limited Feuille de touches, module de touches l'utilisant et procédé de fabrication de feuille de touches

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2362405A1 (fr) * 2010-02-25 2011-08-31 Research In Motion Limited Claviers pour dispositifs mobiles et leurs procédés de fabrication
US9075576B2 (en) 2010-02-25 2015-07-07 Blackberry Limited Keypads for mobile devices and method of manufacturing the same

Also Published As

Publication number Publication date
EP2270824A1 (fr) 2011-01-05
HK1136085A1 (en) 2010-06-18
CA2657735C (fr) 2013-08-27
ATE492898T1 (de) 2011-01-15
ATE533167T1 (de) 2011-11-15
DE602008004090D1 (de) 2011-02-03
CA2657735A1 (fr) 2009-09-18
CN201893261U (zh) 2011-07-06
EP2270824B1 (fr) 2011-11-09
EP2104126B1 (fr) 2010-12-22

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