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公开(公告)号：US20180137994A1
公开(公告)日：2018-05-17
申请号：US15871035
申请日：2018-01-14
Inventor： Rui-Ming Liao , Chih-Chung Yen , Hung-Chieh Lo , Chia-Hung Liu
CPC classification number: H01H13/14 , H01H1/24 , H01H3/42 , H01H13/023 , H01H13/10 , H01H13/28 , H01H13/52 , H01H2201/018 , H01H2205/004 , H01H2215/00 , H01H2215/028 , H01H2215/03
Abstract: A keyswitch uses a combination of springs connected in serial for providing a return force to a keycap of the keyswitch. When the keycap moves toward a base of the keyswitch beyond a transition position, one of the springs stops continuously deforming. It leads to an increment of the elastic coefficient of the combination of springs and an increment of the elastic stored energy by the combination of springs. Therefore, during a pressing on the keycap, the keycap can provide a light force feedback and then a heavy force feedback to a user. Further, the keyswitch can use a switch with a lateral motion, which can reduce influence of a resilient force produced by the switch on the up and down movement of the keycap. The keyswitch also can use an elastic piece disposed beside the keycap, which can provide a tactile feedback to the user.
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公开(公告)号：US10068726B2
公开(公告)日：2018-09-04
申请号：US15422443
申请日：2017-02-01
Inventor： Rui-Ming Liao , Chih-Chung Yen , Hung-Chieh Lo , Chia-Hung Liu
Abstract: A keyswitch uses a combination of springs connected in serial for providing a return force to a keycap of the keyswitch. When the keycap moves toward a base of the keyswitch beyond a transition position, one of the springs stops continuously deforming. It leads to an increment of the elastic coefficient of the combination of springs and an increment of the elastic stored energy by the combination of springs. Therefore, during a pressing on the keycap, the keycap can provide a light force feedback and then a heavy force feedback to a user. Further, the keyswitch can use a switch with a lateral motion, which can reduce influence of a resilient force produced by the switch on the up and down movement of the keycap. The keyswitch also can use an elastic piece disposed beside the keycap, which can provide a tactile feedback to the user.
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Patent Agency Ranking
公开(公告)号：US20210249200A1
公开(公告)日：2021-08-12
申请号：US17161675
申请日：2021-01-29
Applicant: DARFON ELECTRONICS CORP.
Inventor： Chin-Lung Chan , Cheng-Min Su , Hung-Chieh Lo
IPC: H01H3/12 , H01H13/14 , H01H13/04 , H01H13/7065
Abstract: A keyswitch includes a board, a cap opposite to the board, a first support device, a second support device, and a first link member. The first support device is disposed between the cap and the board. An end of the first support device is connected to the board. Another end of the first support device is connected to the cap. The second support device is disposed between the cap and the board and is separate from the first support device at a specific distance. An end of the second support device is connected to the board. Another end of the second support device is connected to the cap. The first link member has a first end portion and a second end portion. The first end portion is movably connected to the first support device. The second end portion is connected to the second support device.
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公开(公告)号：US11569046B2
公开(公告)日：2023-01-31
申请号：US17161675
申请日：2021-01-29
Applicant: DARFON ELECTRONICS CORP.
Inventor： Chin-Lung Chan , Cheng-Min Su , Hung-Chieh Lo
IPC: H01H3/12 , H01H13/14 , H01H13/7065 , H01H13/04
Abstract: A keyswitch includes a board, a cap opposite to the board, a first support device, a second support device, and a first link member. The first support device is disposed between the cap and the board. An end of the first support device is connected to the board. Another end of the first support device is connected to the cap. The second support device is disposed between the cap and the board and is separate from the first support device at a specific distance. An end of the second support device is connected to the board. Another end of the second support device is connected to the cap. The first link member has a first end portion and a second end portion. The first end portion is movably connected to the first support device. The second end portion is connected to the second support device.
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公开(公告)号：US10128063B2
公开(公告)日：2018-11-13
申请号：US15871035
申请日：2018-01-14
Inventor： Rui-Ming Liao , Chih-Chung Yen , Hung-Chieh Lo , Chia-Hung Liu
Abstract: A keyswitch uses a combination of springs connected in serial for providing a return force to a keycap of the keyswitch. When the keycap moves toward a base of the keyswitch beyond a transition position, one of the springs stops continuously deforming. It leads to an increment of the elastic coefficient of the combination of springs and an increment of the elastic stored energy by the combination of springs. Therefore, during a pressing on the keycap, the keycap can provide a light force feedback and then a heavy force feedback to a user. Further, the keyswitch can use a switch with a lateral motion, which can reduce influence of a resilient force produced by the switch on the up and down movement of the keycap. The keyswitch also can use an elastic piece disposed beside the keycap, which can provide a tactile feedback to the user.
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公开(公告)号：US09875865B2
公开(公告)日：2018-01-23
申请号：US15172560
申请日：2016-06-03
Inventor： Rui-Ming Liao , Hung-Chieh Lo
CPC classification number: H01H13/85 , H01H2207/00 , H01H2211/004 , H01H2215/05 , H01H2215/052 , H01H2221/064 , H01H2239/03
Abstract: A keyswitch structure includes a keycap layer having a keycap region, a circuit layer disposed under the keycap layer, at least a haptic actuator disposed under the circuit layer and electrically connected to the circuit layer, a cushion layer disposed under the circuit layer and having an accommodation space for accommodating the haptic actuator, a sensing unit disposed under the cushion layer, and a control circuit coupling the sensing unit and the circuit layer, wherein when an external force is applied and delivered through the cushion layer to trigger the sensing unit, the sensing unit outputs a trigger signal, and the control circuit receives the trigger signal and outputs a driving signal to drive the haptic actuator to vibrate.
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公开(公告)号：US20170221653A1
公开(公告)日：2017-08-03
申请号：US15422443
申请日：2017-02-01
Inventor： Rui-Ming Liao , Chih-Chung Yen , Hung-Chieh Lo , Chia-Hung Liu
CPC classification number: H01H13/14 , H01H1/24 , H01H3/42 , H01H13/023 , H01H13/10 , H01H13/28 , H01H13/52 , H01H2201/018 , H01H2205/004 , H01H2215/00 , H01H2215/028 , H01H2215/03
Abstract: A keyswitch uses a combination of springs connected in serial for providing a return force to a keycap of the keyswitch. When the keycap moves toward a base of the keyswitch beyond a transition position, one of the springs stops continuously deforming. It leads to an increment of the elastic coefficient of the combination of springs and an increment of the elastic stored energy by the combination of springs. Therefore, during a pressing on the keycap, the keycap can provide a light force feedback and then a heavy force feedback to a user. Further, the keyswitch can use a switch with a lateral motion, which can reduce influence of a resilient force produced by the switch on the up and down movement of the keycap. The keyswitch also can use an elastic piece disposed beside the keycap, which can provide a tactile feedback to the user.
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