公开(公告)号：US11646167B1

公开(公告)日：2023-05-09

申请号：US17711757

申请日：2022-04-01

Applicant: Primax Electronics Ltd.

Inventor： Chuang-Shu Jhuang ,  Dan Li ,  Sheng-Huang Huang

IPC: H01H13/7065 ,  H01H3/12

CPC classification number: H01H13/7065 ,  H01H3/125 ,  H01H2231/002

Abstract: A keyboard device includes plural key structures. Each key structure includes a base plate, a keycap, a membrane circuit board, a connecting member and an elastic element. The keycap includes a pressing post. The membrane circuit board is arranged between the base plate and the keycap. The connecting member is penetrated through the membrane circuit board and connected between the keycap and the base plate. The keycap is movable upwardly or downwardly relative to the membrane circuit board. The elastic element is arranged between the keycap and the membrane circuit board. The elastic element includes a resilience piece and plural supporting ribs. The plural supporting ribs are arranged between the resilience piece and the keycap. The plural supporting ribs are contacted with the pressing post of the keycap. Consequently, there is a gap between the pressing post and the resilience piece.

公开(公告)号：US10692667B1

公开(公告)日：2020-06-23

申请号：US16292799

申请日：2019-03-05

Applicant: Primax Electronics Ltd.

Inventor： Chuang-Shu Jhuang ,  Sheng-Huang Huang ,  Zhi-Hui Zeng

IPC: G06F3/02 ,  H01H13/70 ,  H01H13/705 ,  H01H13/7065 ,  H01H13/14

Abstract: A keyboard device includes a base, a wing-type connecting element and a keycap. The base plate includes a close-type connecting bracket. The wing-type connecting element includes a first frame and a second frame. A connecting shaft of the second frame is received within the close-type connecting bracket. Consequently, the wing-type connecting element is connected with the base plate. While the keycap is depressed, the connecting shaft is only allowed to be rotated and limited within the close-type connecting bracket. Since the swinging range of the wing-type connecting element is reduced, the keyboard device of the present invention is capable of improving the depressing stability of the keycap.