• Patent Title: Key module trigger element having more than one contact finger each with differing pre-travel paths
  • Application No.: US17272733
    Application Date: 2019-09-10
  • Publication No.: US11676779B2
    Publication 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
Key module trigger element having more than one contact finger each with differing pre-travel paths
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.
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