公开(公告)号：US11177083B1

公开(公告)日：2021-11-16

申请号：US17161153

申请日：2021-01-28

Applicant: Primax Electronics Ltd.

Inventor： Ming-Han Wu ,  Che-Wei Yang ,  Yi-Wei Chen ,  Chien-Hung Liu ,  Lei-Lung Tsai

IPC: H01H3/12 ,  H01H13/10 ,  H01H13/705

Abstract: A key structure includes a keycap, a base plate and a wing-type supporting element. When the keycap is depressed in response to an external force, a first frame and a second frame of the wing-type supporting element are pushed by each other through protrusion structures and rotating shafts. Consequently, the first frame and the second frame can be swung relative to the base plate.

公开(公告)号：US11099656B1

公开(公告)日：2021-08-24

申请号：US17031686

申请日：2020-09-24

Applicant: Primax Electronics Ltd.

Inventor： Bo-An Chen ,  Yi-Wei Chen

IPC: G06F3/02 ,  G06F1/16 ,  H01H13/70

Abstract: A low-height key structure includes a keycap, a supporting plate, a connecting element, a circuit board and an elastic element. The circuit board is disposed on the supporting plate. A switch element is installed on the circuit board. The connecting element is connected with the keycap and the supporting plate. The keycap is movable upwardly or downwardly relative to the supporting plate through the connecting element. The elastic element is arranged between the keycap and the circuit board. The elastic element includes a contacting part and an elastic support part, which are connected with each other. The contacting part includes a bowl-shaped concave structure. A raised structure is protruded from a middle region of a bottom side of the bowl-shaped concave structure. A top surface of the raised structure is at a level lower than or equal to a top surface of the contacting part.

公开(公告)号：US10401970B1

公开(公告)日：2019-09-03

申请号：US16044756

申请日：2018-07-25

Applicant: Primax Electronics Ltd.

Inventor： Bo-An Chen ,  Chien-Hung Liu ,  Ming-Han Wu ,  Yi-Wei Chen

IPC: G06F3/02 ,  H01H13/705 ,  H01H3/12 ,  H01H13/704

Abstract: A keyboard device and a manufacturing method of the keyboard device are provided. The keyboard device includes a base plate, a membrane circuit board and a key. A connecting structure with an upper connecting part is protruded from the base plate. The membrane circuit board includes a first film layer with an extension part. A clearance space is formed between the extension part and the base plate. An end part of the stabilizer bar of the keycap is clamped between the upper connecting part and the extension part. While the stabilizer bar is moved, the end part of the stabilizer bar is slid between the upper connecting part and the extension part. Moreover, the end part of the stabilizer bar and the extension part are interfered with each other and sunken downwardly into the clearance space.