公开(公告)号：US10930451B2

公开(公告)日：2021-02-23

申请号：US16448282

申请日：2019-06-21

Applicant: Darfon Electronics Corp.

Inventor： Yung-Chih Wang ,  Chia-Hung Liu ,  Yu-Chun Hsieh ,  Chen Yang

IPC: H01H13/85 ,  H01H13/52 ,  H01H13/04 ,  H01H13/02 ,  H01H13/14

Abstract: A keyswitch structure includes a base having a positioning means, an cover combined with the base, a plunger with an cam portion movably coupling with the cover relative to the base, a restoring unit disposed between the base and the plunger to provide a restoring force to enable the plunger to move along a direction away from the base, a tactile feedback member having a positioning portion positioned by the positioning means and an extending arm extending across a moving path of the cam portion, and an adjusting unit being movable to drive the positioning portion to shift, so that the tactile feedback member has a first deformation or a second deformation, and a pressing force required for the cam portion to pass the extending arm when the plunger moves toward the base is changed.

公开(公告)号：US10431402B2

公开(公告)日：2019-10-01

申请号：US16108070

申请日：2018-08-21

Applicant: DARFON ELECTRONICS CORP.

Inventor： Yu-Chun Hsieh ,  Chia-Hung Liu ,  Yung-Chih Wang ,  Chen Yang

IPC: H01H13/10 ,  H01H13/04 ,  H01H3/12 ,  H01H13/85 ,  H01H13/705

Abstract: A button switch connected to a cap and includes a base having a pillar, a flexible acoustic member having fixing and flexible rods, a sleeve, an upward-force-applying member abutting against the sleeve and the base, a resilient arm, and a cover disposed on the base. The sleeve rotatably jackets the pillar, passes through the cover to be connected to the cap, and has first and second convex portions, first and second concave portions, and a protruding edge located between the second convex portion and the second concave portion. The resilient arm selectively abuts against a first or second position on the first convex portion. When the resilient arm abuts against the first position and the protruding edge is located above the flexible rod, the flexible rod crosses the protruding edge and then collides with the cover to make a sound when the sleeve receives an external force to move downward.

公开(公告)号：US20190238131A1

公开(公告)日：2019-08-01

申请号：US16240096

申请日：2019-01-04

Applicant: Darfon Electronics Corp.

Inventor： Chen Yang ,  Yu-Chun Hsieh ,  Yung-Chih Wang ,  JIA-HUNG LIU ,  Ching-Yu Wang ,  LI-TE CHANG

IPC: H03K17/969

CPC classification number: H03K17/968 ,  H03K17/969 ,  H03K2217/9651 ,  H03K2217/9653

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.

公开(公告)号：US20190164703A1

公开(公告)日：2019-05-30

申请号：US16128524

申请日：2018-09-12

Applicant: DARFON ELECTRONICS CORP.

Inventor： Chen Yang ,  Chia-Hung Liu ,  Yung-Chih Wang ,  Yu-Chun Hsieh

IPC: H01H13/85 ,  G06F3/01 ,  H01H13/7057

Abstract: A keyswitch with adjustable tactile feedback is adjusted by an adjusting method. The keyswitch includes a baseplate, an upper housing, an upper bushing component, a lower bushing component, a keycap and a recovering component. The baseplate has an electrode module, the upper housing is disposed on the baseplate, the upper bushing component is movably disposed on the upper housing, the lower bushing component is movably located between the baseplate and the upper housing, and the keycap is connected to a connecting portion of the upper bushing component. The lower bushing component can rotate relative to the baseplate to switch between a first position and a second position. The lower bushing component has a first lateral surface and a second lateral surface with different shapes. The recovering component is disposed between the baseplate and the lower bushing component to upwardly push the lower bushing component.