Patents Assigned to Dongguan City Kaihua Electronics Co., Ltd.
  • Patent number: 10770247
    Abstract: A varistor type multi-directional input device, including an upper cover, a base, a rocker assembly, a reset assembly, an electrical component, a switch elastic piece and a terminal assembly. The conductive elastic piece of the electrical component is mounted in a cavity surrounded by the upper cover, the base and the varistor. The rocking bar is operated to swing the eccentric wheel of the upper rocker arm or the lower rocker arm, and the surface pressure of the varistor is different due to the different deformation of elastic piece caused by the change of the height of the eccentric wheel in the axial direction, so that the varistor outputs different resistance values to achieve control of the screen cursor. The present disclosure is provided with a rocker arm seat which is matched with the upper rocker arm and the lower rocker arm.
    Type: Grant
    Filed: November 27, 2019
    Date of Patent: September 8, 2020
    Assignee: Dongguan City Kaihua Electronics Co., Ltd
    Inventor: FuXi Wu
  • Patent number: 10770243
    Abstract: A push-button switch with good balance, including a base, a cover covering the base, a press core, a torsion spring, a conductive assembly and a press core slider, which are respectively arranged on the base. A guide pillar provided with guide hole is protruded upwardly from a center of the base. Two baffles are arranged on the base and at opposite sides of the guide pillar to form an annular receiving slot provided with a balance rod assembly formed by a first and a second balance rod cross-connected with each other, two crossing junctions of which are limited by a positioning slider. A cylinder is protruded downward from a center of an annular slot formed at a lower end of the press core. The cylinder and the guide pillar are respectively inserted into the guide hole and the annular slot. The guide pillar is sleeved with a spring.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: September 8, 2020
    Assignee: DONGGUAN CITY KAIHUA ELECTRONICS CO., LTD
    Inventor: Fuxi Wu
  • Patent number: 10410803
    Abstract: A silent key switch includes a base body, a static contact, a dynamic contact, a movable plate, a first balancing stand, a second balancing stand, and a keycap. The movable plate includes a silencer body arranged on the head of the movable plate, a U-shaped groove provided on the rear part of the movable plate, and a first slot provided adjacent to the silencer body; one end of the movable plate where the silencer body is located is abutted against the dynamic contact and the static contact; the first balancing stand and the second balancing stand intersect with each other and are pin jointed together in a superimposed way.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: September 10, 2019
    Assignee: DONGGUAN CITY KAIHUA ELECTRONICS CO., LTD.
    Inventor: Fuxi Wu
  • Patent number: 10388474
    Abstract: A keyboard switch includes a base, a static contact, a movable contact, an upper cover, a button and a reset spring; the upper cover is buckled to the base; one end of the button is install on the base and the other end passes through the upper cover; the upper and lower ends of the reset spring respectively abut against the button and the base; at least two balance bars for preventing the button from tilting; at least four rotating grooves and guiding grooves for installing the balancing levers are further included; the body of the balance levers are rotatablely rotatably embedded in the rotation grooves, and both ends of the balancing lever are rotatablely rotatably embedded in the corresponding guiding grooves and move back and forth along the guiding grooves.
    Type: Grant
    Filed: July 21, 2016
    Date of Patent: August 20, 2019
    Assignee: DONGGUAN CITY KAIHUA ELECTRONICS CO., LTD
    Inventor: Fuxi Wu
  • Publication number: 20190252136
    Abstract: A thin type mechanical keyboard switch including a base and a keycap arranged on the base is provided. The base is provided with a first side accommodating groove, a conducting component. The base is further provided with a second side accommodating groove, a middle accommodating groove disposed between the first and the second side accommodating grooves, and a surrounding groove arranged around an upper end edge of the base. A balance rack is arranged in the surrounding groove, and the second side accommodating groove is provided with a torsional spring. The middle accommodating groove is provided with a blocking piece, a hanging piece, a tension spring and a guiding core. A through groove is formed between the first side accommodating groove and the middle accommodating groove. The through groove—is provided with a piston located between the guiding core and the conducting component.
    Type: Application
    Filed: April 25, 2019
    Publication date: August 15, 2019
    Applicant: DONGGUAN CITY KAIHUA ELECTRONICS CO., LTD
    Inventor: FuXi Wu
  • Patent number: 10354817
    Abstract: The invention discloses a keyboard switch including a base, a cover covering the base to form a cavity, an upper guide core disposed in the cavity and an upper guide core limiting mechanism including a lower guide core elastomer, a lower guide core, a middle guide core spring and a middle guide core sequentially disposed on the base. The upper guide core and the middle guide core are connected through an upper guide core spring. The keyboard switch of the invention provides accuracy of the press-conduction displacement, accurate positioning of the conduction course, and adjustability of the press force, such that the press force becomes more balanced, and the keyboard switch is conducted when the guide core is pressed downwards. Thus, the overall press stability of the keyboard switch is improved.
    Type: Grant
    Filed: April 2, 2018
    Date of Patent: July 16, 2019
    Assignees: DONGGUAN CITY KAIHUA ELECTRONICS CO., LTD, SILITEK ELECTRONICS (DONGGUAN) CO., LTD
    Inventors: Chih-Wen Su, Yuang-Feng Hu
  • Patent number: 10347445
    Abstract: An input device, including: a base, an upper cover, a lever assembly, a reset assembly, an electrical assembly, a spring switch, and a terminal assembly. The upper cover is disposed on the base and includes a central cavity. The lever assembly is disposed in the central cavity formed by the upper cover and the base, and includes a lever, an upper shoulder, and a lower shoulder. The lever includes an upper end and a lower end. The reset assembly is disposed below the lever assembly. The electrical assembly is electrically connected to the lever assembly, and includes a first slider, a second slider, a first carbon-film conductive dome, a first carbon-film resistor, a second carbon-film conductive dome, a second carbon-film resistor, and a trigger. The spring switch is disposed in the base and positioned below the trigger.
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: July 9, 2019
    Assignee: DONGGUAN CITY KAIHUA ELECTRONICS CO., LTD.
    Inventor: Fuxi Wu
  • Patent number: 10332700
    Abstract: A thin keyboard switch includes a keycap, a housing, an elastic body, an elastic contact body, a balancing frame, and a base disposed on a printed circuit board (PCB). A base groove fitting with the elastic contact body is provided at the center of the base, the elastic contact body is disposed at the bottom portion inside the base groove, and the elastic contact body is electrically connected to the PCB. The housing and the base are disposed in a tightly gripping manner. The elastic body protrudes from the housing and is connected to the keycap, and the keycap is mounted on the balancing frame.
    Type: Grant
    Filed: March 5, 2018
    Date of Patent: June 25, 2019
    Assignee: DONGGUAN CITY KAIHUA ELECTRONICS CO., LTD.
    Inventor: Fuxi Wu
  • Publication number: 20190096606
    Abstract: A press sound producing keyboard switch includes a base, a guiding inclined surface and an elastic piece provided on the base, and a cap covering the base to define an accommodating cavity. A press assembly, a spring and a conduction assembly is disposed in the accommodating cavity. A press block is provided on the press assembly. Wherein the press block is in triangular shape, length of a bottom surface of the press block is less than width of a bottom surface of the guiding inclined surface, an end portion of the elastic piece is located below the press block and above the guiding inclined surface, and the press block is located at a side of the guiding inclined surface.
    Type: Application
    Filed: November 13, 2018
    Publication date: March 28, 2019
    Applicant: DONGGUAN CITY KAIHUA ELECTRONICS CO., LTD
    Inventor: FuXi Wu
  • Publication number: 20190096608
    Abstract: A waterproof assembly is adapted for a keyboard switch. The water proof assembly includes a body element, a water proof cover, a sliding channel, and a pushing rod. The body element defines a plunger guiding groove and a conductive member accommodating groove. The waterproof cover covers the conductive member accommodating groove. The sliding channel is defined between the conductive member accommodating groove and the waterproof cover, and is communicated with the plunger guiding groove and the conductive member accommodating groove. The pushing rod is mounted inside the sliding channel to control a conductive member of the keyboard switch to be turned on or turned off.
    Type: Application
    Filed: November 29, 2018
    Publication date: March 28, 2019
    Applicant: DONGGUAN CITY KAIHUA ELECTRONICS CO., LTD
    Inventor: FuXi Wu
  • Patent number: 10211010
    Abstract: A keyboard switch includes a base (1), a resistance-type pressure sensor (5) installed on the base (1), a spring (3) arranged in the base (1) and capable of being pressed on the resistance-type pressure sensor (5), a button (4) which presses the spring (3) and is in sliding fit with the base (1), and an upper cover (2) which presses the button (4) and is adaptive to the base (1). The resistance-type pressure sensor (5) includes two terminals (53) and an elastic sensitive element (51), the elastic sensitive element (51) being internally provided with a resistance strain gauge (52), and two leads (54) extending outwards from the resistance strain gauge (52); one ends of the two terminals (53) are respectively connected to the two leads (54), and the other ends of the two terminals (53) are separately connected to a PCB (6).
    Type: Grant
    Filed: February 12, 2018
    Date of Patent: February 19, 2019
    Assignee: DONGGUAN CITY KAIHUA ELECTRONICS CO., LTD.
    Inventor: Fuxi Wu
  • Patent number: 10200035
    Abstract: A photoelectric switch, including: a main body, an upper cover, an infrared tube, an elastic shading mechanism, a bridge piece, a slidable switch member, a key, a sound mode trigger block, a silent mode trigger block, and an accommodating space. The slidable switch member is transversely slidable between the main body and the upper cover. The handle of the slidable switch member protrudes out of the main body. Both the sound mode trigger block and the silent mode trigger block are up-down movably disposed on the slidable switch member and move along with the slidable switch member. When the slidable switch member is slid to one side, the sound mode trigger block is disposed right beneath the key; and when the slidable switch member is slid to the other side, the silent mode trigger block is disposed right beneath the key.
    Type: Grant
    Filed: May 9, 2017
    Date of Patent: February 5, 2019
    Assignee: Dongguan City Kaihua Electronics Co., Ltd.
    Inventor: Fuxi Wu
  • Patent number: 10200034
    Abstract: A photoelectric switch, including: a base, an infrared tube, a keycap, a balance frame, a resetting mechanism, and a light-blocking member. The light-blocking member is configured to change the propagation direction of light emitted from the infrared tube to allow or block the light propagation in the infrared tube. The infrared tube is disposed on the base. The infrared tube includes a light-emitting end and a light-receiving end. The infrared tube, the balance frame, and the resetting mechanism are disposed beneath and covered by the keycap. In operation, upon being pressed by an external force, the balance frame leads the keycap to move downwards smoothly; the light-blocking member moves upwards or downwards along with the motion of the keycap and the balance frame or the resetting mechanism. The resetting mechanism is configured to reset the keycap or the balance frame.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: February 5, 2019
    Assignee: Dongguan City Kaihua Electronics Co., Ltd.
    Inventor: Fuxi Wu