公开(公告)号：US12216824B2

公开(公告)日：2025-02-04

申请号：US17819649

申请日：2022-08-15

Applicant: Darfon Electronics Corp.

Inventor： Yu-Chun Hsieh ,  Chen Yang ,  Shao-Lun Hsiao ,  Po-Yueh Chou

IPC: G06F3/01 ,  G06F3/02 ,  G06F3/0354 ,  H01H13/85

Abstract: A mute-able input device with keystroke tactile feedback includes: a plurality of keys, each including a tactile structure and a sound-generating structure for respectively generating operational tactile feedback and operating sounds; a plurality of adjusting mechanisms, each including an adjusting portion corresponding to one of the keys; at least one switching unit including an operating portion and a switch member, the operating portion connecting the switch member and the adjusting mechanism, the switch member generating a switching signal involving a mode switching between different tactile modes or different sound modes for one or more keys. When the operating portion moves in response to a force, the switch member is triggered to achieve the mode switching; meanwhile, the adjusting portion moves to interfere with at least one of the tactile structure or the sound-generating structure along with the movement of the operating portion.

公开(公告)号：US12210179B2

公开(公告)日：2025-01-28

申请号：US18368021

申请日：2023-09-14

Applicant: DARFON ELECTRONICS CORP.

Inventor： Chao-Yu Chen

IPC: F21V8/00 ,  G06F3/02

Abstract: A backlight keyswitch includes a backlight module and a keyswitch body having a cap with a symbol. The backlight module disposed under the cap includes a light guide plate, a light-blocking sheet, a backlight circuit board having first, third, and second lighting units disposed in the light guide plate and arranged sequentially along a longitudinal direction for emitting first, third, and second color lights respectively, and a micro optical layer. The light-blocking sheet is located above the backlight circuit board and has a transparent region. The light guide plate is located between the light-blocking sheet and the backlight circuit board. The micro optical layer is parallel to the light guide plate and formed corresponding to the transparent region to guide the first, second, and third color lights to the symbol and has first and second clearance regions respectively adjacent to the first and second lighting units in the longitudinal direction.

公开(公告)号：US20250026439A1

公开(公告)日：2025-01-23

申请号：US18777560

申请日：2024-07-19

Applicant: DARFON ELECTRONICS CORP.

Inventor： Chang-Tai Chiang

IPC: B62M6/50 ,  B62M6/60

Abstract: A bike driving system includes a chainring, a chain, a cassette sprocket and a sensing ratchet set. The cassette sprocket and the chainring are synchronously linked through the chain. The sensing ratchet set is connected to the cassette sprocket. The sensing ratchet set includes a ratchet base, a ratchet shell, a bottom case and a bike rotation speed sensor. The ratchet shell is rotatably disposed on the ratchet base. The bottom case is rotatably disposed at an end of the ratchet base. The bike rotation speed sensor is configured to sense a rotation speed of the ratchet base relative to the bottom case. If a gear ratio of the cassette sprocket to the chainring is between 1 and 0.5, and when the chainring rotates once in a full circle, a number of pulse signals output by the bike rotation speed sensor is between 24 and 150.

公开(公告)号：US12198877B2

公开(公告)日：2025-01-14

申请号：US18512073

申请日：2023-11-17

Applicant: DARFON ELECTRONICS CORP.

Inventor： Heng-Yi Huang ,  Hsin-Cheng Ho

IPC: H01H13/83 ,  F21V8/00 ,  H01H13/02 ,  H01H13/705 ,  H01H3/12

Abstract: A backlight module configured to illuminate at least one key cap of a lighting keyboard. The backlight module includes a lighting board, a light emitting unit and a light guide plate. The lighting board has a first reflective layer, a lighting circuit and two aligned micro-structure regions, all three at least partially being layered in parallel with each other. The two micro-structure regions reflect lights and are separated by the lighting circuit. The light emitting unit includes plural color dies connecting electrically with the lighting circuit. The light guide plate has a light guide hole for accommodating the light emitting unit. The color dies of the light emitting unit are aligned linearly, while the two micro-structure regions of the lighting board are aligned in perpendicular to the linearly-aligned color dies, with the micro-structure regions disposed at opposite sides the light emitting unit.

公开(公告)号：US12087518B2

公开(公告)日：2024-09-10

申请号：US18222487

申请日：2023-07-17

Applicant: DARFON ELECTRONICS CORP.

Inventor： Po-Wei Tsai ,  Sheng-Yun Yang

IPC: H01H3/12 ,  F21V8/00 ,  G06F3/02 ,  H01H13/7065 ,  H01H13/83

CPC classification number: H01H13/7065 ,  H01H13/83 ,  H01H2219/054

Abstract: A keyboard includes a plurality of keyswitches, a plastic baseplate, and a membrane circuit board. Each keyswitch has a keycap, a lifting mechanism and an elastic member. The lifting mechanism is movably connected to the keycap. The elastic member abuts against the keycap. The plastic baseplate has a first hole formed corresponding to each elastic member and has a connecting structure corresponding to each lifting mechanism. The connecting structure is movably connected to the lifting mechanism to make the keycap movable relative to the plastic baseplate. The membrane circuit board is disposed under the plastic baseplate. Each elastic member passes through the first hole on the plastic baseplate to be disposed on the membrane circuit board. When the keycap is pressed, the elastic member deforms downward to trigger the membrane circuit board. When the keycap is released, the elastic member returns the keycap to its original position.

公开(公告)号：US12087517B2

公开(公告)日：2024-09-10

申请号：US18222991

申请日：2023-07-17

Applicant: DARFON ELECTRONICS CORP.

Inventor： Po-Wei Tsai ,  Sheng-Yun Yang

IPC: H01H3/12 ,  F21V8/00 ,  G06F3/02 ,  H01H13/10 ,  H01H13/702

CPC classification number: H01H13/702 ,  H01H13/10

Abstract: A keyboard is applied to mounting on a holding baseplate of a computer device and includes a plurality of keyswitches, a membrane circuit board and a baseplate. The membrane circuit board is disposed under the plurality of keyswitches. The baseplate is disposed between the plurality of keyswitches and the membrane circuit board and is connected to the plurality of keyswitches, so as to make the plurality of keyswitches movable relative to the baseplate for triggering the membrane circuit board. The baseplate has a plurality of hooks. The plurality of hooks passes through the membrane circuit board to be engaged with a plurality of engaging hole structures of the holding baseplate respectively, so as to detachably mount the keyboard on the computer device. A number of the plurality of hooks is greater than forty.

公开(公告)号：US12080492B2

公开(公告)日：2024-09-03

申请号：US17989703

申请日：2022-11-18

Applicant: DARFON ELECTRONICS CORP.

Inventor： Chen Yang ,  Ling-Hsi Chao ,  Shao-Lun Hsiao ,  Yu-Chun Hsieh

IPC: H01H13/12 ,  H01H13/7073 ,  H01H13/83

CPC classification number: H01H13/83 ,  H01H13/7073

Abstract: A keyswitch structure includes a lift mechanism and a keycap. Two supports of the lift mechanism support the keycap. There can be a spring structure connecting the two supports for driving the two supports to lift the keycap. The lift mechanism defines a central space extending through the whole lift mechanism in a vertical direction. The spring structure does not enter the central space. The two supports abut against and constrain each other through corresponding structures, to mutually rotate with respect to a rotation axis. The keyswitch structure can include a switch. The switch includes an intermediate support, detachably abutting downward against the lift mechanism or the keycap, and a resilient part, detachably abutting downward against the intermediate support. In the process of pressing the keycap, the intermediate support is separated from the lift mechanism or the keycap, so that the contact force of the switch can be maintained constant.

公开(公告)号：US12062506B2

公开(公告)日：2024-08-13

申请号：US18353925

申请日：2023-07-18

Applicant: Darfon Electronics Corp.

Inventor： Heng-Yi Huang ,  Hsin-Cheng Ho

IPC: H01H13/83

CPC classification number: H01H13/83 ,  H01H2221/0702

Abstract: An illuminated keyswitch structure and an illuminating module thereof are provided. A base plate has an opening. The illuminating module includes a drive circuit board, having a face reflector and at least one dot reflector disposed thereon, a spacer adhered on the drive circuit board and having a through hole and an adhesive-less clearance fringe at least partially surrounding the through hole, a light-emitting part disposed on the drive circuit board and proximate to the face reflector and the dot reflector, and a translucent covering structure covering above the light-emitting part and including a reflective layer. The reflective layer reflects off light from the light-emitting part, and the face reflector and/or the at least one dot reflector reflect light to pass through the through hole of the spacer and then illuminate upward through the translucent covering structure and further through the opening of the base plate.

公开(公告)号：US12061353B2

公开(公告)日：2024-08-13

申请号：US18131900

申请日：2023-04-07

Applicant: Darfon Electronics Corp.

Inventor： Hsin-Cheng Ho ,  Heng-Yi Huang

IPC: F21V8/00 ,  G06F3/02

CPC classification number: G02B6/0043 ,  G02B6/0083 ,  G06F3/0202

Abstract: A backlit module for a backlit keyboard is provided. The backlit module includes a lighting board. The lighting board includes a substrate and an electronic device layer. The electronic device layer is disposed on the substrate. The electronic device layer includes a plurality of key circuit groups. Each of the key circuit groups corresponds to a key group of the backlit keyboard, and includes one or more light sources and a resistor. When the key circuit group includes a plurality of light sources, the light sources are arranged in parallel. The one or more light sources correspond to one or more key of the key group. The resistor is arranged in series with the one or more light sources.

公开(公告)号：US12027326B2

公开(公告)日：2024-07-02

申请号：US18343881

申请日：2023-06-29

Applicant: Darfon Electronics Corp.

Inventor： Chao-Yu Chen

IPC: H01H13/83

CPC classification number: H01H13/83 ,  H01H2219/044 ,  H01H2219/06 ,  H01H2219/062

Abstract: A backlit-module-embedded illuminated keyswitch structure includes a baseplate, a mask film disposed below the baseplate and having a first coating for substantially reflecting a light and a second coating for substantially blocking the light, a light guide sheet at one side of the mask film and having a light source hole, and a reflective layer at one side of the light guide sheet opposite to the mask film. The second coating includes a second main coating region and a plurality of second coating sub-regions, which extends outward from the second main coating region and is arranged along the periphery of the second main coating region to form a plurality of intermediary regions therebetween. The first coating and the second coating are disposed right above the light source hole. The first coating is at least partially located in the intermediary regions.