公开(公告)号：US10276328B1

公开(公告)日：2019-04-30

申请号：US15990384

申请日：2018-05-25

Applicant: Primax Electronics Ltd.

Inventor： Hsiang-Wen Cheng ,  Sheng-An Tsai ,  Li-Jen Chien

IPC: H01H13/14 ,  H01H13/84 ,  H01H13/7065 ,  H01H13/52

Abstract: A keyboard structure includes a keycap, a supporting plate, a connecting element and a clicking element. The keycap has a top surface and a bottom surface. The connecting element is connected with the keycap and the supporting plate. The clicking element is located under the keycap. While the keycap is descended, the clicking element is pressed by the push post and subjected to curvy deformation and then the clicking element is separated from the push post. When the clicking element is elastically restored to an original position to knock on the bottom surface of the keycap, a click sound is generated.

公开(公告)号：US20200185169A1

公开(公告)日：2020-06-11

申请号：US16286249

申请日：2019-02-26

Applicant: Primax Electronics Ltd.

Inventor： Sheng-An Tsai ,  Li-Jen Chien ,  Hsiang-Wen Cheng

IPC: H01H13/84 ,  H01H13/7065

Abstract: A keyboard device includes a key structure, a membrane wiring board and an elastic element. The elastic element is arranged between the key structure and the membrane wiring board. The key structure includes a sleeve, a plunger-type support shaft, a keycap and a resilience element. The plunger-type support shaft is movable upwardly or downwardly relative to the sleeve. When the keycap is depressed in response to an external force, the resilience element and the sleeve interfere with each other. Consequently, the keyboard device provides the operating sound and the operating feedback like a mechanical switch.

公开(公告)号：US10658137B1

公开(公告)日：2020-05-19

申请号：US16362362

申请日：2019-03-22

Applicant: Primax Electronics Ltd.

Inventor： Sheng-An Tsai ,  Li-Jen Chien ,  Hsiang-Wen Cheng

IPC: H01H13/88 ,  H01H13/705 ,  H01H3/12 ,  G06F3/02

Abstract: A key structure includes a support shaft, a resilience sheet, a pedestal and a keycap. While the keycap is pressed down in response to an external force, the support shaft is moved downwardly and the resilience sheet is correspondingly moved. Since a resilience part of the resilience sheet is pushed by a push part of the pedestal, the resilience part is subjected to deformation. After the resilience part is moved across the push part, the resilience part is elastically restored and swung. Consequently, the resilience part collides with the inner surface of the sliding groove to generate a click sound.

公开(公告)号：US10236141B1

公开(公告)日：2019-03-19

申请号：US15865622

申请日：2018-01-09

Applicant: Primax Electronics Ltd.

Inventor： Sheng-An Tsai ,  Li-Jen Chien ,  Hsiang-Wen Cheng ,  Jia-Jui Yang ,  Pai-Ping Hsu

IPC: H01H13/705 ,  H01H13/83 ,  H01H13/02 ,  H01H3/12

Abstract: A key structure includes a membrane switch circuit member, a rubbery elastomer, a housing, a triggering element, a metallic elastic element and a keycap. The keycap is disposed on the triggering element. The rubbery elastomer is disposed on the membrane switch circuit member. The housing is located over the rubbery elastomer. The triggering element is movable relative to the housing. The metallic elastic element is contacted with the triggering element. While the keycap is depressed, the triggering element is moved relative to the housing to press the metallic elastic element. While the metallic elastic element is pushed by the triggering element, the metallic elastic element is swung to collide with the triggering element. Consequently, a click sound is generated.

公开(公告)号：US10658135B1

公开(公告)日：2020-05-19

申请号：US16286249

申请日：2019-02-26

Applicant: Primax Electronics Ltd.

Inventor： Sheng-An Tsai ,  Li-Jen Chien ,  Hsiang-Wen Cheng

IPC: G06F3/02 ,  H01H13/705 ,  H01H13/84 ,  H01H13/85 ,  H01H13/7065

Abstract: A keyboard device includes a key structure, a membrane wiring board and an elastic element. The elastic element is arranged between the key structure and the membrane wiring board. The key structure includes a sleeve, a plunger-type support shaft, a keycap and a resilience element. The plunger-type support shaft is movable upwardly or downwardly relative to the sleeve. When the keycap is depressed in response to an external force, the resilience element and the sleeve interfere with each other. Consequently, the keyboard device provides the operating sound and the operating feedback like a mechanical switch.