# US 2018/0025863 A1 · Keyswitch device and keyboard > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0025863 A1 - Document ID: US20180025863A1 - Status: Published application - Kind: A1 - Application number: 15/499,871 - Filed: 2017-04-27 - Published: 2018-01-25 - Earliest claimed: 2016-07-22 - Assignees: Chicony Electronics Co., Ltd. - Applicants: Chicony Electronics Co., Ltd. - Inventors: Chun-Te LEE - Web page: https://patentgrep.com/patent/US20180025863A1 ## CPC - H01H 13/705: characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys - H01H 3/125: {using a scissor mechanism as stabiliser} - H01H 13/7065: characterised by the mechanism between keys and layered keyboards - H01H 2223/054: Mounting of key housings on same printed circuit - H01H 2223/056: Mounting of key housings on same frame - H01H 2233/03: mounted on support plate or frame - H01H: ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES (contact cables H01B7/10; electrolytic self-interrupters H01G9/18; emergency protective circuit arrangements H02H; switching by electronic means without contact-making H03K17/00) ## Abstract A keyswitch device includes a circuit board, a fixing bracket, a micro switch, a keycap, and a connecting assembly. The circuit board has a first surface and a second surface opposite to the first surface. The fixing bracket includes a main body and a first hook. The main body abuts against the first surface. The first hook is connected to the main body and fixed to the circuit board. The micro switch passes through the main body, and is disposed on the circuit board and configured to generate a pressing signal to the circuit board while being pressed. The keycap is supported on the micro switch and configured to press the micro switch toward the circuit board. The connecting assembly is connected between the fixing bracket and the keycap and configured to guide the keycap to move upward and downward relative to the circuit board. ## Claims ### Claim 1 A keyswitch device, comprising: a circuit board having a first surface and a second surface opposite to the first surface; a fixing bracket comprising: a main body abutting against the first surface; and a first hook connected to the main body and fixed to the circuit board; a micro switch disposed on the circuit board, passing through the main body and configured to generate a pressing signal to the circuit board while being pressed; a keycap supported on the micro switch and configured to press the micro switch toward the circuit board; and a connecting assembly connected between the fixing bracket and the keycap and configured to guide the keycap to move upward and downward relatively to the circuit board. ### Claim 2 (depends on 1) The keyswitch device of claim 1, wherein the circuit board further comprises a through hole communicating the first surface and the second surface, and the first hook abuts against the second surface via the through hole. ### Claim 3 (depends on 2) The keyswitch device of claim 2, wherein the main body slidably abuts against the first surface, so as to make the first hook selectively abut against or leave the second surface. ### Claim 4 (depends on 3) The keyswitch device of claim 3, wherein the fixing bracket further comprises a second hook and the micro switch comprises: a pedestal disposed on the circuit board and having a positioning hole; and a push button supporting the keycap and engaged with the pedestal, the push button being configured to move toward or away from the pedestal, wherein the second hook is engaged with the positioning hole when the first hook abuts against the second surface, and the second hook is separated from the positioning hole when the first hook is separated from the second surface. ### Claim 5 (depends on 4) The keyswitch device of claim 4, wherein the first hook and the second hook are located at opposite sides of the main body. ### Claim 6 (depends on 4) The keyswitch device of claim 4, wherein the positioning hole is located at a peripheral edge of the pedestal. ### Claim 7 (depends on 4) The keyswitch device of claim 4, wherein the circuit board further has an engaging hole and the engaging hole is configured to engage with the peripheral edge of the pedestal. ### Claim 8 (depends on 4) The keyswitch device of claim 4, wherein the fixing bracket further comprises a plurality of third hooks connected to the main body and configured to be engaged with the connecting assembly. ### Claim 9 (depends on 4) The keyswitch device of claim 4, wherein the push button has an abutting portion extending toward the pedestal, and the micro switch further comprises: a first terminal disposed on the pedestal and electrically connected to the circuit board; and a second terminal disposed on the pedestal, electrically connected to the circuit board, and opposite to the first terminal, wherein when the push button moves toward the pedestal to make the abutting portion abut against the second terminal, the second terminal is then moved toward the first terminal to electrically connect to the first terminal, so as to generate a pressing signal. ### Claim 10 (depends on 4) The keyswitch device of claim 4, wherein the micro switch further comprises: a restoring member disposed between the pedestal and the push button. ### Claim 11 (depends on 3) The keyswitch device of claim 3, wherein the fixing bracket comprises metal, the circuit board further comprises a grounding pad disposed on the second surface and adjacent to the through hole, and the grounding pad is configured to electrically contact the first hook abutting against the second surface. ### Claim 12 A keyboard, comprising: a circuit board having a first surface and a second surface opposite to the first surface; and a plurality of keyswitch assemblies, each of the keyswitch assemblies comprising: a fixing bracket, comprising: a main body abutting against the first surface; and a first hook connected to the main body and fixed to the circuit board; a micro switch disposed on the circuit board passing through the main body and configured to press the micro switch toward the circuit board; and a connecting assembly connected between the fixing bracket and the keycap and configured to guide the keycap to move upward and downward relative to the circuit board. ### Claim 13 (depends on 12) The keyboard of claim 12, wherein the circuit board further has a plurality of through holes communicating the first surface and the second surface and the first hook abuts against the second surface via the corresponding through hole. ### Claim 14 (depends on 13) The keyboard of claim 13, wherein the main body slidably abuts against the first surface, so as to make the first hook selectively abut against or leave the second surface. ### Claim 15 (depends on 14) The keyboard of claim 14, wherein the fixing bracket further comprises a second hook and the micro switch comprises: a pedestal disposed on the circuit board and having a positioning hole; and a push button supporting the keycap and engaged with the pedestal, the push button disposed to move toward or away from the pedestal, wherein the second hook engages with the positioning hole when the first hook abuts against the second surface, and the second hook is separated from the positioning hole when the first hook is separated from the second surface. ### Claim 16 (depends on 15) The keyboard of claim 15, wherein the first hook and the second hook are located at the opposite sides of the main body. ### Claim 17 (depends on 15) The keyboard of claim 15, wherein the positioning hole is located at a peripheral edge of the pedestal. ### Claim 18 (depends on 15) The keyboard of claim 15, wherein the circuit board further comprises a plurality of engaging holes, and each of the engaging holes is configured to engage with the peripheral edge of the pedestal of the corresponding micro switch. ### Claim 19 (depends on 15) The keyboard of claim 15, wherein the fixing bracket further comprises a plurality of third hooks connected to the main body and configured to be engaged with the connecting assembly. ### Claim 20 (depends on 15) The keyboard of claim 15, wherein the push button has an abutting portion extending toward the pedestal, and the micro switch further comprises: a first terminal disposed on the pedestal and electrically connected to the circuit board; and a second terminal disposed on the pedestal, electrically connected to the circuit board and opposite to the first terminal, wherein when the push button moves toward the pedestal to make the abutting portion abut against the second terminal, the second terminal is then moved toward the first terminal to electrically connect to the first terminal, so as to generate a pressing signal. ### Claim 21 (depends on 15) The keyboard of claim 15, wherein the micro switch further comprises: a restoring member disposed between the pedestal and the push button. ### Claim 22 (depends on 14) The keyboard of claim 14, wherein the fixing bracket comprises metal, the circuit board further comprises a grounding pad disposed on the second surface and adjacent the through hole, and the grounding pad is configured to electrically contact the first hook abutting against the second surface.