Invention Grant
- Patent Title: Key module trigger element having more than one contact finger each with differing pre-travel paths
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Application No.: US17272733Application Date: 2019-09-10
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Publication No.: US11676779B2Publication Date: 2023-06-13
- Inventor: Eduard Ruff
- Applicant: Cherry GmbH
- Applicant Address: DE Auerbach/Opf
- Assignee: CHERRY GMBH
- Current Assignee: CHERRY GMBH
- Current Assignee Address: DE Auerbach/Opf
- Agency: Stites & Harbison PLLC
- Agent James R. Hayne
- Priority: DE 2018122416.8 2018.09.13 DE 2019108956.5 2019.04.05 DE 2019116585.7 2019.06.19
- International Application: PCT/EP2019/074041 2019.09.10
- International Announcement: WO2020/053177A 2020.03.19
- Date entered country: 2021-03-02
- Main IPC: H01H13/78
- IPC: H01H13/78 ; G10H1/34 ; H01H1/28 ; H01H3/12

Abstract:
What is presented is a key module for a keyboard. The key module comprises a key tappet. The key module also comprises a module housing. The module housing is formed to movably accommodate the key tappet, in order to enable a translational actuation movement of the key tappet between a rest position and in an actuated position relative to the module housing. The key module further comprises a trigger element for triggering an actuation signal of the key module in response to the actuation movement. The trigger element is attached to the key tappet. The trigger element is a contactor for electrically shorting contact pads of a circuit substrate of the keyboard. The trigger element comprises more than two elastically deformable contact fingers for contacting the contact pads after different pre-travel paths in the course of the actuation movement.
Public/Granted literature
- US20210366673A1 KEY MODULE FOR A KEYBOARD, KEYBOARD AND METHOD FOR RECOGNIZING ACTUATION OF A KEY MODULE OF A KEYBOARD Public/Granted day:2021-11-25
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