WO2001044917A1 - Interrupteur de clavier - Google Patents
Interrupteur de clavier Download PDFInfo
- Publication number
- WO2001044917A1 WO2001044917A1 PCT/JP1999/007109 JP9907109W WO0144917A1 WO 2001044917 A1 WO2001044917 A1 WO 2001044917A1 JP 9907109 W JP9907109 W JP 9907109W WO 0144917 A1 WO0144917 A1 WO 0144917A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- switch
- key top
- sheet
- support plate
- key
- Prior art date
Links
- 210000000078 claw Anatomy 0.000 claims description 12
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000012528 membrane Substances 0.000 description 12
- 238000005452 bending Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229920003002 synthetic resin Polymers 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 102100025490 Slit homolog 1 protein Human genes 0.000 description 1
- 101710123186 Slit homolog 1 protein Proteins 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/1615—Constructional details or arrangements for portable computers with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function
- G06F1/1616—Constructional details or arrangements for portable computers with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function with folding flat displays, e.g. laptop computers or notebooks having a clamshell configuration, with body parts pivoting to an open position around an axis parallel to the plane they define in closed position
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
- G06F1/1662—Details related to the integrated keyboard
- G06F1/1666—Arrangements for reducing the size of the integrated keyboard for transport, e.g. foldable keyboards, keyboards with collapsible keys
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
- H01H3/12—Push-buttons
- H01H3/122—Push-buttons with enlarged actuating area, e.g. of the elongated bar-type; Stabilising means therefor
- H01H3/125—Push-buttons with enlarged actuating area, e.g. of the elongated bar-type; Stabilising means therefor using a scissor mechanism as stabiliser
Definitions
- the present invention relates to a keyboard switch such as a notebook personal computer provided with a cover for covering a keyboard, and more particularly to a keyboard switch in which the keyboard is lowered for storage when the cover is closed.
- FIGS. 7 to 9 show the main parts of the conventional keyboard switch 100, in which a support plate 107 supporting a large number of key tops 102 and each key top 102 are connected.
- a cross link 101 including a first link member 101a and a second link member 101b is provided therebetween.
- the first link member 101a and the second link member 101b are each formed in a U-shape, and are rotatable relative to each other at an intermediate rotation fulcrum 101c.
- one end of the first link member 101a on the support plate 107 side is a hinge end 110 which is mounted on a support projection of the support plate 107.
- the other end of the key top 102 is engaged with a guide 105 provided on the back surface of the key top 102, so that the movable end is movable left and right and rotatable. 1 1 1 Further, one end of the second link member 101 b on the support plate 107 side is a moving end portion 112 mounted on the engagement elongated hole, and the other end of the key top 102 side. Is a hinge end 113 which is rotatably connected to the back of the key top 102.
- a falling bowl-shaped rubber elastic portion 114 acting as a return spring is arranged, and the lower surface of the pressing portion 106 suspended from the bottom surface of the keytop 102. I'm in contact with
- the falling rubber elastic portion 114 is integrally formed with the wrapper sheet 104 laminated on the switch sheet 103, and the switch sheet further below the falling rubber elastic portion 114 is integrally formed.
- a membrane switch section 103 a is formed in 103.
- the rubber sheet 104 and the switch sheet 103 can integrally slide on the support plate 10.
- the key top 102 When the key top 102 is pressed from above, the key top 102 is guided by the cross link 101, and descends while maintaining a substantially parallel state without a large inclination. As shown in FIG. 8, the second pressing portion 106 forces the bent-back rubber elastic portion 114 to bend, and the membrane switch portion 103a to turn on.
- a lid 1 15 covering the whole of the plurality of keys 102 is rotatably connected to an equipment case to which the keyboard switch is attached.
- the rubber-sheet 104 and the switch sheet 103 are supported in conjunction with the closing operation, supporting the key top 102.
- the falling bowl-shaped rubber elastic portion 114 retreats below the storage recess 1 16 of the key top 102.
- the membrane switch section 103a does not turn on.
- the pressing portion 106 and the housing recess 116 are formed on the bottom surface of the keytop 102, the keytop 102 becomes larger, the keyboard switch 100 becomes larger, and the return spring 1 In order to move 14 to the storage recess 1 16 at the evacuation position, it is necessary to slide a long distance, and the mechanism for interlocking with the lid 115 becomes large and complicated.
- the present invention has been made in view of such conventional problems, and has as its object to provide a keyboard switch that can be made thinner without compressing the return spring when the lid is closed. I do.
- Another object of the present invention is to provide a keyboard switch that can move the return spring to the retracted position with a simple configuration, and can open and close the lid with a light operating force. Disclosure of the invention
- a keyboard switch includes: a support plate housed in an equipment case; a cross link attached between a support protrusion of the support plate and the key top, for guiding the key top vertically.
- a switch sheet that is freely slidable on the support plate, avoiding the support projections, and that has a switch section that operates by lowering the key top, is attached to the key top or cross link, and is integrated with the switch sheet.
- a return panel that returns the key top that touches and descends upward, and in conjunction with the closing operation of the lid that covers the key top, moves either the switch sheet or the support plate from the standby position to the retracted position with respect to the other.
- An interlocking mechanism that relatively slides and moves the key top down is provided. The pitch portion, a keyboard Dosuitchi to slide to the retracted position 'location does not work even if the key top as a state of being lowered,
- an evacuation hole is formed at a portion of the switchboard where the return panel contacts, and a part of the return panel is accommodated in the evacuation hole.
- the switch When the key top is pressed at the standby position, the switch operates by the key top being lowered, and when the key is released, the key top is raised by the return spring, and the operation of the switch is released.
- the switch slides relatively to the retracted position and does not operate even if the key top is lowered in conjunction with the closing operation. Also, a part of the return panel falls into the evacuation hole of the switch sheet and is accommodated in the evacuation hole. The return panel can maintain the standby position even if the contact position is lowered and the key top is lowered.
- the keyboard switch also has a cross-link on the switch sheet.
- An engaging hole for inserting a driven claw piece integrally connected to the hook is formed, and when either the switch sheet or the support plate slides to the evacuation position, the periphery of the engaging hole that moves relatively is driven claw. It may be one that abuts against a piece, sinks the cross link, and lowers the key top.
- an interlocking mechanism can be configured in which the key top is lowered only by processing the switch sheet and the cross link.
- the keyboard switch is such that the return panel is a thin plate spring that is cantilevered on a key top or a cross link, and the free end of the return panel in the standby position is lowered by the key top.
- the switch may be operated by pressing the switch.
- the return spring acts as an actuator for pressing and operating the switch, the number of components is reduced and the configuration of the keyboard switch is simplified. Even in the standby position, the keyboard switch is thinned because the actuator is not overlaid on the return spring.
- the keyboard switch may be such that the switch sheet slides between the standby position and the retracted position with respect to the support plate in conjunction with the opening and closing operation of the lid.
- the key board switch further comprises a slit formed on the switch sheet with the slide direction as a longitudinal direction, and the support projection of the support plate is loosely fitted into the slit, and the switch is used for the switch by the support projection. It may be one that guides the slide of the sheet.
- the switch sheet is separated by a loose fit of the support projection on the slit. It is guided in the slide direction without providing a guide member.
- FIG. 1 is a cross-sectional view of a main portion of a keyboard switch 10 at a standby position of a keyboard switch 1 according to an embodiment of the present invention.
- FIG. FIG. 3 is a cross-sectional view of a main part of the key switch 10 showing a state in which the key switch 10 is depressed.
- FIG. 3 is a cross-sectional view of a main part of the key switch 10 in a retracted position.
- FIG. 4 is an exploded perspective view showing each component of the key switch 10
- FIG. 5 is a plan view of the keyboard switch 1 with the lid 29 opened
- FIG. 6 is an interlocking mechanism shown in FIG. It is the principal part top view which expanded.
- FIG. 7 to 9 show a conventional keyboard switch 100.
- FIG. 7 is a longitudinal sectional view of a main part of the keyboard switch 100 in a standby position
- FIG. FIG. 9 is a longitudinal sectional view of a main part showing a state where the key top 102 is pressed from the position
- FIG. 9 is a longitudinal sectional view of a main part showing the keyboard switch 100 when the keyboard switch 100 is stored.
- the keyboard switch 1 is configured by arranging a large number of key switches 0 shown in FIGS. 1 to 4 on a support plate 18 made of a metal plate, a synthetic resin plate or the like.
- each key switch 10 includes a key top 2, a cross link 13, a switch sheet 3 on which a memory switch portion 3 a is formed, and a support plate 1. It consists of eight.
- the keyboard switch according to the present embodiment is used as a key input device of a notebook personal computer.
- the cover is attached to the device case 1 '1 of the personal computer, and is rotatably attached to the device case 14 when stored without using the notebook computer.
- the key top 2 is made of a molded product of a synthetic resin such as an ABS resin. Behind the bottom of the key top 2 (to the right in FIG. 1), a pair of rotatably supporting rear portions of the inner link 7 are provided. A pair of guide receivers 5 that pivotally and slidably guide the front of the outer link 8 forwardly (to the left in FIG. 1) of the U-shaped bearing 6 are integrally formed. Is formed.
- the cross link 13 is composed of a pair of synthetic resin inner link 7 and outer link 8 integrally provided with arms 7a, 8a parallel to both sides, respectively. a and 8a are rotatably connected at the center of intersection.
- the cross link 13 is attached between the bottom of the key top 2 and the support projections 11 and 12 that are cut and raised from the support plate 18 and the links 7 and 8, respectively.
- a pivot 7 b connecting the arms 7 a and 7 a is rotatably engaged with the U-shaped bearing 6 of the key top 2, and the front is the arm 7.
- the sliding projections 7c protruding from the sides of the a and 7a are loosely fitted into the long holes 11a drilled in the front support projections 11, and are supported so as to rotate and slide freely in the front-rear direction. It is.
- sliding projections 8 b protruding from both sides of the connecting plate 22 connecting the both arm portions 8 a pivotally move to the guide receiving portion 5 of the key top 2.
- a driven claw piece 15 is provided at the front of the arms 7a, 7a of the inner link 7, a driven claw piece 15 is provided in a circular arc shape further obliquely below the position supported by the front support projection 11.
- an elongated strip-shaped leaf spring piece 24 is integrally connected diagonally downward.
- the leaf spring piece 24 is cantilevered behind the connecting plate 22 and has a conical abutting portion 24 a that elastically contacts the surface of the switch sheet 3 on the bottom surface at the free end, which is the lower end. Are stamped out.
- a switch portion composed of the membrane switch portion 3a and the disc spring 4 placed above the switch portion 3a is provided. Are formed.
- the membrane switch section 3a is composed of movable contacts and fixed contacts printed on upper and lower flexible sheets, and the upper and lower flexible sheets are laminated via insulating spacers. , Facing each other with a slight gap.
- the disc spring 4 is obtained by bending an elastic metal plate into a disk dish shape, and is fixed on the membrane switch portion 3a by bonding the periphery thereof to a flexible sheet.
- the switch sheet 3 is disposed on the support plate 18 so as to be freely slidable in the front-rear direction with respect to the support plate 18.
- a guide slit 19 is drilled at the position where the front support projection 11 and the rear support projection 12 project so that they do not interfere with the raised front support projection 11 and the rear support projection 12.
- Information slit 1 9 The width is slightly wider than the thickness of the front support projections 11 and the rear support projections 12 and is formed with the front and rear directions as longitudinal directions. Guided by 1 and 2 slides back and forth. Inside the guide slit 19 through which the front support projection 11 is inserted, an engaging hole 16 through which the driven claw piece 15 of the inner link 7 is inserted is formed continuously with the guide slit 19. Has been established.
- the support plate 18 is fixedly accommodated in the equipment case 14, and the front support protrusion 11 and the rear support protrusion 12 described above are provided at the corresponding portions for each key switch 10. A pair is cut and raised. At the standby position, as shown in Fig. 1, the driven claw piece 15 of the inner link 7 inserted through the engagement hole 16 is formed in the hole 11b formed by punching the front support projection 11. The tip is housed. As shown in FIGS. 5 and 6, the switch sheet 3 is moved in the front-rear direction by a conversion mechanism provided at a connection portion of the device case 14 with the cover 29 in conjunction with the opening and closing operation of the cover. It is supposed to slide.
- This conversion mechanism has a cylindrical cam 25 that rotates integrally with a pivot that rotatably supports the lid 29, and a crank-shaped cam groove 25 a formed in the cylindrical cam 25 and a slider 26.
- the follower 26a is loosely fitted from the inside.
- a slider angle 27 formed by shaping a thin metal plate into an inverted L-shape is fixed to the slider 26, and a bending along the inside of the slide angle 27 is performed.
- the upper and left edges of the switch sheet 3 in the figure are clamped and fixed in the groove, and the flexible switch sheet 3 is slid together with the slide angle.
- the slider 26 reciprocates linearly back and forth (left and right in the figure), and the switch sheet 3 slides forward and backward together with the slider 26.
- FIG. 1 shows a state where the lid 29 is opened, a standby position where no pressing force is applied to the key top 2 and an input operation of the key switch is awaited.
- the key top 2 When the key top 2 is pressed, the key top 2 is lowered while maintaining a horizontal state by the cross link 13, and as shown in FIG. 2, the contact portion 24 a of the leaf spring piece 24 is Press and bend the disc spring 4. Due to the bending of the disc spring 4, the movable contact of the membrane switch section 3a comes into contact with the fixed contact, and the switch section is turned on.
- the switch sheet 3 moves to the left with respect to the cross link 13 attached to the support plate 18, so that the rear edge 16a of the engagement hole 16 is The arm 7a of the inner link 7 'comes into contact with the driven claw piece 15 and is rotated clockwise around the sliding protrusion 7c in FIG.
- the cross link 13 sinks, the key top 2 descends, and the entire device case 14 with the lid 29 covering the key top 2 can be made thinner.
- the contact portion 24a of the leaf spring piece 24 is accommodated in the retracted hole 17 of the switch sheet 3.
- the leaf spring piece 24 can be accommodated in the device case 14 in a substantially free state, and the leaf spring piece 24 is not accommodated while being elastically deformed. No form occurs.
- the disc spring 4 and the membrane switch 3a attached to the contact portion 24a of the leaf spring piece 24 retreat to the left by sliding the switch sheet 3 to the left. The switch does not malfunction when the key top 2 descends.
- the present invention can be variously modified without being limited to the above embodiments,
- the switch sheet 3 is moved by opening and closing the lid
- the support plate 18 may be moved with respect to the switch sheet.
- the leaf spring piece 24 for returning the key top 2 also serves as an actuator for operating the switch, but separately from the leaf spring piece 24 acting as a return spring, the key top 2 or the cross spring is provided.
- the link 13 may be provided with an actuator for pressing the switch portion.
- the disc spring 4 that reverses is used to maintain the 0N operation of the membrane switch 3a, but it is not always necessary to provide the disc spring 4 in the switch.
- cylindrical cam 25 and the follower 26 are used as an interlocking mechanism that slides the switch sheet in conjunction with the opening and closing operation of the lid. May be used.
- the return spring 24 is retracted below the key top 2 in a state close to a free state. Can extend the life of the keyboard switch.
- the key top 2 when storing the keyboard switch in the equipment case 14, the key top 2 was lowered using the sliding switch sheet 3 or the support plate 18 without providing a particularly complicated structure. Since the key top 2 can be in the state, the key top 2 does not interfere with the closed lid 29, and the liquid crystal display arranged on the back side of the lid 29 is damaged. Therefore, the key top 2 is not damaged.
- the return panel also serves as an actuator for pressing and operating the switch, the number of components is reduced, and the configuration of the keyboard switch is simplified.
- the keyboard switch according to the present invention can be used as an input device provided in a portable electronic device, such as a note-type personal computer or a mobile phone, which is required to be thin.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Push-Button Switches (AREA)
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99959885A EP1164463A4 (en) | 1999-12-17 | 1999-12-17 | KEYBOARD SWITCH |
PCT/JP1999/007109 WO2001044917A1 (fr) | 1999-12-17 | 1999-12-17 | Interrupteur de clavier |
KR10-2000-7008393A KR100381758B1 (ko) | 1999-12-17 | 1999-12-17 | 키보드 스위치 |
JP2001500403A JP3501450B2 (ja) | 1999-12-17 | 1999-12-17 | キーボードスイッチ |
US09/687,723 US6297461B1 (en) | 1999-12-17 | 2000-10-13 | Keyboard switch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP1999/007109 WO2001044917A1 (fr) | 1999-12-17 | 1999-12-17 | Interrupteur de clavier |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/687,723 Continuation US6297461B1 (en) | 1999-12-17 | 2000-10-13 | Keyboard switch |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001044917A1 true WO2001044917A1 (fr) | 2001-06-21 |
Family
ID=14237611
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1999/007109 WO2001044917A1 (fr) | 1999-12-17 | 1999-12-17 | Interrupteur de clavier |
Country Status (5)
Country | Link |
---|---|
US (1) | US6297461B1 (ja) |
EP (1) | EP1164463A4 (ja) |
JP (1) | JP3501450B2 (ja) |
KR (1) | KR100381758B1 (ja) |
WO (1) | WO2001044917A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1934056A1 (en) * | 2005-09-13 | 2008-06-25 | Research In Motion Limited | Keyboard for hand-held devices |
WO2017002572A1 (ja) * | 2015-07-01 | 2017-01-05 | 富士通コンポーネント株式会社 | キースイッチ装置及びキーボード |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI241512B (en) * | 2000-12-13 | 2005-10-11 | Darfon Electronics Corp | Key device having scissors-type flexible structure |
JP3652254B2 (ja) * | 2001-01-23 | 2005-05-25 | 韓国エスエムケイ株式会社 | キースイッチ |
KR100419055B1 (ko) * | 2001-08-31 | 2004-02-19 | 한국에스엠케이 주식회사 | 키스위치 |
KR100867608B1 (ko) * | 2007-08-21 | 2008-11-10 | 한국과학기술원 | 접이식 휴대용 단말기 |
US8314353B2 (en) * | 2009-10-05 | 2012-11-20 | Sony Ericsson Mobile Communications Ab | Keypad for a mobile device |
US8735753B2 (en) * | 2012-06-18 | 2014-05-27 | Microsoft Corporation | Keyboard having retracting keys for storage |
JP6430333B2 (ja) * | 2015-06-01 | 2018-11-28 | アルプス電気株式会社 | 押圧操作装置 |
US10101774B2 (en) * | 2017-03-03 | 2018-10-16 | Dell Products, L.P. | Mechanical actuation of retractable keyboard |
US10965287B2 (en) * | 2018-12-20 | 2021-03-30 | Dexin Electronic Ltd. | Replaceable key structure |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0465037A (ja) * | 1990-07-04 | 1992-03-02 | Nakajima All Precision Kk | キーボード |
JPH0684425A (ja) * | 1992-09-01 | 1994-03-25 | Alps Electric Co Ltd | 押釦スイッチ |
JPH11345535A (ja) * | 1999-03-26 | 1999-12-14 | Brother Ind Ltd | キ―スイッチ |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59186214A (ja) * | 1983-04-08 | 1984-10-23 | 富士通株式会社 | 押釦スイツチ |
TW367513B (en) * | 1992-06-11 | 1999-08-21 | Alps Electric Co Ltd | Key switch |
US5914468A (en) * | 1996-08-23 | 1999-06-22 | Oki Electric Industry Co. Ltd. | Keyboard unit and key switch |
US5770824A (en) * | 1996-11-19 | 1998-06-23 | Chicony Electronics Co., Ltd. | Key switch arrangement for notebook computers |
US5971637A (en) * | 1996-12-10 | 1999-10-26 | Texas Instruments Incorporated | Low profile keyboard |
JPH10188720A (ja) * | 1996-12-26 | 1998-07-21 | Smk Corp | キーボードスイッチ |
-
1999
- 1999-12-17 JP JP2001500403A patent/JP3501450B2/ja not_active Expired - Fee Related
- 1999-12-17 KR KR10-2000-7008393A patent/KR100381758B1/ko not_active IP Right Cessation
- 1999-12-17 EP EP99959885A patent/EP1164463A4/en not_active Withdrawn
- 1999-12-17 WO PCT/JP1999/007109 patent/WO2001044917A1/ja not_active Application Discontinuation
-
2000
- 2000-10-13 US US09/687,723 patent/US6297461B1/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0465037A (ja) * | 1990-07-04 | 1992-03-02 | Nakajima All Precision Kk | キーボード |
JPH0684425A (ja) * | 1992-09-01 | 1994-03-25 | Alps Electric Co Ltd | 押釦スイッチ |
JPH11345535A (ja) * | 1999-03-26 | 1999-12-14 | Brother Ind Ltd | キ―スイッチ |
Non-Patent Citations (1)
Title |
---|
See also references of EP1164463A4 * |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1934056A1 (en) * | 2005-09-13 | 2008-06-25 | Research In Motion Limited | Keyboard for hand-held devices |
EP1934056A4 (en) * | 2005-09-13 | 2009-01-21 | Research In Motion Ltd | KEYBOARD FOR PORTABLE DEVICES |
EP2402165A1 (en) * | 2005-09-13 | 2012-01-04 | Research In Motion Limited | Keyboard for hand-held devices |
US8330628B2 (en) | 2005-09-13 | 2012-12-11 | Research In Motion Limited | Keyboard for hand-held devices |
US8941511B2 (en) | 2005-09-13 | 2015-01-27 | Blackberry Limited | Keyboard for hand-held devices |
WO2017002572A1 (ja) * | 2015-07-01 | 2017-01-05 | 富士通コンポーネント株式会社 | キースイッチ装置及びキーボード |
US10446343B2 (en) | 2015-07-01 | 2019-10-15 | Fujitsu Component Limited | Key switch and keyboard |
Also Published As
Publication number | Publication date |
---|---|
US6297461B1 (en) | 2001-10-02 |
KR20010106091A (ko) | 2001-11-29 |
EP1164463A1 (en) | 2001-12-19 |
EP1164463A4 (en) | 2003-04-02 |
JP3501450B2 (ja) | 2004-03-02 |
KR100381758B1 (ko) | 2003-04-26 |
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