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公开(公告)号：US11735380B2
公开(公告)日：2023-08-22
申请号：US18060070
申请日：2022-11-30
Applicant: Darfon Electronics Corp.
Inventor： Chen Yang , Chia-Hung Liu , Yu-Chun Hsieh
CPC classification number: H01H13/20 , H01H13/04 , H01H13/14 , H01H13/70 , H01H2233/07
Abstract: A keyswitch structure includes a base, a cap disposed corresponding to the base, a restoring member disposed between the base and the cap, and a tactile adjustment unit. The cap has a cam portion movable relative to the base. The restoring member is configured to provide a restoring force to enable the cam portion to move away from the base. The tactile adjustment unit is disposed corresponding to the cam portion and includes a holder and a tactile feedback member mounted on the holder. The holder is movable relative to the base to change a position of the tactile feedback member relative to the cam portion, so as to change a pressing force required for the cam portion to move toward the base.
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公开(公告)号：US10535477B2
公开(公告)日：2020-01-14
申请号：US16260066
申请日：2019-01-28
Applicant: DARFON ELECTRONICS CORP.
Inventor： Yu-Chun Hsieh , Yung-Chih Wang , Chen Yang , Chia-Hung Liu , Yen-Hsiao Lin
Abstract: A button switch includes a base having a pillar, a cover disposed on the base, a sleeve, an arm adjacent to the pillar and an elastic member having upward-force-applying, extending-rod, and flexible-rod portions. The sleeve jackets the pillar, passes through the cover, and has first and second ribs. The upward-force-applying portion jackets the pillar and abuts against the sleeve and the base to drive the sleeve to move away from the base. The extending-rod portion extends from the upward-force-applying portion to be connected to the flexible-rod portion located under the first rib. When the sleeve is located at a high position, the second rib biases the arm to deform. When the sleeve is located at a low position, the second rib is misaligned with the arm. The flexible-rod portion crosses the first rib to be released and then collides with the cover to make sound as the sleeve is pressed.
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公开(公告)号：US10310609B2
公开(公告)日：2019-06-04
申请号：US15697438
申请日：2017-09-06
Applicant: DARFON ELECTRONICS CORP.
Inventor： Chia-Hung Liu
Abstract: A keyswitch includes a cap, internal and external sleeves, a resilient arm, a base having a pillar, and an elastic member abutting against the internal sleeve and the base. The internal sleeve jackets the pillar, abuts against the cap and has a first outer annular surface with a transverse slot. The external sleeve jackets the internal sleeve and has a protruding block movably inserted into the transverse slot for guiding the external sleeve to rotate and a second outer annular surface having concave and convex portions and an arc-shaped bar. When the resilient arm abuts against a second position on the convex portion and the cap presses the external sleeve, the resilient arm crosses the arc-shaped bar. When the resilient arm abuts against a first position on the convex portion and the cap presses the external sleeve, the resilient arm does not need to cross the arc-shaped bar.
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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：US11223357B2
公开(公告)日：2022-01-11
申请号：US16746997
申请日：2020-01-20
Applicant: DARFON ELECTRONICS CORP.
Inventor： Yu-Chun Hsieh , Chen Yang , Chia-Hung Liu
IPC: H03K17/968
Abstract: A keyswitch includes a circuit board, a bottom board abutting against the circuit board, a cap, a light receiver and a light emitter disposed on the circuit board and opposite to each other, a base disposed on the circuit board, a cover disposed on the base, a first elastic member disposed through the cover and the base, a support device, and a second elastic member fixed to the base and having a flexible rod. The support device is movably connected to the cap and bottom board and has a sheet structure. When the cap is pressed, the sheet structure blocks light transmission between the light emitter and the light receiver to generate a triggering signal. When the cap is pressed to make the flexible rod deform downward with the sheet structure and then cross the sheet structure, the flexible rod is released to collide with the cover to make sound.
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Patent Agency Ranking
公开(公告)号：US11018667B2
公开(公告)日：2021-05-25
申请号：US16240139
申请日：2019-01-04
Applicant: Darfon Electronics Corp.
Inventor： Chen Yang , Yu-Chun Hsieh , Yung-Chih Wang , Chia-Hung Liu
IPC: H03K17/96 , H03K17/969 , H03K17/968
Abstract: An optical keyswitch includes a keycap, a supporting mechanism having a protrusion disposed under the keycap to support the keycap to move downward or upward, and a switch module including a circuit board, an emitter, and a receiver. The emitter and the receiver are electrically connected to the circuit board. The emitter emits an optical signal to the receiver. When the keycap is not pressed, the receiver receives the optical signal of a first intensity. When the keycap is pressed, the protrusion moves along with the keycap, and the protrusion changes the optical signal received by the receiver to have a second intensity different from the first intensity, so the switch module is triggered to generate a triggering signal.
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公开(公告)号：US20190244770A1
公开(公告)日：2019-08-08
申请号：US16260066
申请日：2019-01-28
Applicant: DARFON ELECTRONICS CORP.
Inventor： Yu-Chun Hsieh , Yung-Chih Wang , Chen Yang , Chia-Hung Liu , Yen-Hsiao Lin
Abstract: A button switch includes a base having a pillar, a cover disposed on the base, a sleeve, an arm adjacent to the pillar and an elastic member having upward-force-applying, extending-rod, and flexible-rod portions. The sleeve jackets the pillar, passes through the cover, and has first and second ribs. The upward-force-applying portion jackets the pillar and abuts against the sleeve and the base to drive the sleeve to move away from the base. The extending-rod portion extends from the upward-force-applying portion to be connected to the flexible-rod portion located under the first rib. When the sleeve is located at a high position, the second rib biases the arm to deform. When the sleeve is located at a low position, the second rib is misaligned with the arm. The flexible-rod portion crosses the first rib to be released and then collides with the cover to make sound as the sleeve is pressed.
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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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公开(公告)号：US20170221652A1
公开(公告)日：2017-08-03
申请号：US15404212
申请日：2017-01-12
Inventor： Rui-Ming Liao , Chih-Chung Yen , Chia-Hung Liu
CPC classification number: H01H13/023 , G02B6/0006 , G02B6/0008 , H01H1/24 , H01H3/42 , H01H2205/004 , H01H2219/014 , H01H2219/056 , H01H2219/062 , H01H2219/0621
Abstract: An illuminated keyswitch includes a base, a keycap, a lift mechanism, and a light source. The keycap includes a cap body and a light guiding rod. The lift mechanism is connected to between the light guiding rod and the base, such that the keycap can vertically move relative to the base through the lift mechanism. The light source is disposed between the light guiding rod and the base and emits light toward the light guiding rod. The light enters the light guiding rod through an end portion of the light guiding rod and then emits out the light guiding rod from another end portion of the light guiding rod and a side surface adjacent to the another end portion toward the cap body. Thereby, the whole cap body can receives relatively uniform back light.
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公开(公告)号：US09411475B2
公开(公告)日：2016-08-09
申请号：US14096032
申请日：2013-12-04
Inventor： Ching-Chuan Chang , Chia-Hung Liu
IPC: H01H9/26 , H01H13/72 , H01H13/76 , G06F3/044 , H03K17/975
CPC classification number: G06F3/044 , G06F2203/04103 , H03K17/975 , H03K2217/9653
Abstract: A keyboard includes a non-conductive board, a plurality of keyswitches, and a capacitive touch sensing sheet. The plurality of keyswitches is disposed on the non-conductive board. Each keyswitch includes a keycap and a support device. The support device is connected to the keycap and the non-conductive board so as to make the keycap movable between a pressing position and a non-pressing position relative to the non-conductive board. The capacitive touch sensing sheet is disposed under the non-conductive board for providing a cursor signal to a computer device.
Abstract translation: 键盘包括非导电板，多个按键开关和电容式触摸感测板。 多个按键开关设置在非导电板上。 每个键开关包括键帽和支撑装置。 支撑装置连接到键帽和非导电板，以使键帽相对于非导电板在按压位置和非按压位置之间移动。 电容式触摸感测片设置在非导电板下方，用于向计算机设备提供光标信号。
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