公开(公告)号：US20210066005A1

公开(公告)日：2021-03-04

申请号：US16662704

申请日：2019-10-24

Applicant: Primax Electronics Ltd.

Inventor： Ming-Han Wu ,  Yi-Wei Chen ,  Che-Wei Yang

IPC: H01H13/83 ,  H01H13/7065 ,  H01H13/85

Abstract: A keyboard device includes plural key structures, a membrane circuit board and a flexible light shielding element. Each key structure includes a keycap. The keycap has a first end surface and a second end surface. The membrane circuit board is located under the keycap. The flexible light shielding element is arranged between the keycap and the membrane circuit board, and includes a bottom layer and plural stopping walls. Each stopping wall includes a wall body and a platform part. The wall body is protruded from the bottom layer and in the direction toward the keycap. An included angle is formed between the wall body and the bottom layer. The platform part is protruded from the wall body. The platform part is arranged between the second end surface of the keycap and the bottom layer. The platform part is contacted with the second end surface.

公开(公告)号：US20220234342A1

公开(公告)日：2022-07-28

申请号：US17212277

申请日：2021-03-25

Applicant: Primax Electronics Ltd.

Inventor： Ming-Han Wu ,  Yi-Wei Chen

IPC: B32B37/12 ,  G06F3/02 ,  B32B38/00 ,  B32B7/12 ,  B32B3/30

Abstract: A method of attaching an elastic protective film on an object is provided. Firstly, the object is provided. Then, an adhesive layer is installed on the object. Then, the elastic protective film is provided. Then, a buffering element is provided. Then, a piercing element is provided. A side of the piercing element facing the buffering element includes plural needle-like structures. Then, the piercing element and the buffering element are pressed on the elastic protective film, the adhesive layer and the object along a first direction. Consequently, the buffering element and the elastic protective film are pierced by the plural needle-like structures. Then, the piercing element and the buffering element are removed along a second direction, wherein the second direction is opposite to the first direction.

公开(公告)号：US20200020492A1

公开(公告)日：2020-01-16

申请号：US16144046

申请日：2018-09-27

Applicant: Primax Electronics Ltd.

Inventor： Che-Wei Yang ,  Yi-Chen Wang ,  Chien-Hung Liu ,  Ming-Han Wu ,  Bo-An Chen ,  Yi-Wei Chen ,  Huang-Ming Chang ,  Chen-Hsuan Hsu

IPC: H01H13/7065 ,  H01H13/88 ,  H01H13/86

Abstract: A keyboard device includes a membrane circuit board, a key frame, a position-limiting frame and a key structure. The key frame is located over the membrane circuit board. The position-limiting frame is located over the key frame. The key frame includes a first frame body and a first receiving hole. The first receiving hole runs through the first frame body along a vertical direction. The position-limiting frame includes a second frame body and a second receiving hole. The second receiving hole runs through the second frame body along the vertical direction. The second receiving hole is in communication with the first receiving hole. The key structure includes a keycap and a protrusion part. The keycap is movable within the first receiving hole and the second receiving hole. A portion of the protrusion part is located under the second frame body.

公开(公告)号：US20220214721A1

公开(公告)日：2022-07-07

申请号：US17183841

申请日：2021-02-24

Applicant: Primax Electronics Ltd.

Inventor： Ming-Han Wu ,  Yi-Wei Chen

IPC: G06F1/16 ,  H01H13/86 ,  H01H13/06

Abstract: A keyboard device includes plural keys, a frame member and an elastic protective film. The frame member includes an outer frame and plural perforations. The keys are disposed within the outer frame. The outer frame has a first surface and a second surface opposed to the first surface. The plural perforations are in communication with the first surface and the second surface. The elastic protective film is fixed on the first surface of the frame member. The plural keys and the plural perforations are covered by the elastic protective film.

公开(公告)号：US11145475B1

公开(公告)日：2021-10-12

申请号：US17081495

申请日：2020-10-27

Applicant: Primax Electronics Ltd.

Inventor： Ming-Han Wu ,  Che-Wei Yang ,  Yi-Wei Chen ,  Chien-Hung Liu ,  Chen-Hsuan Hsu

IPC: H01H13/70 ,  H01H13/705

Abstract: A keyboard device includes plural key structures. Each key structure includes a plate assembly, a keycap, a connecting member and a buffering element. The plate assembly has a hollow region. The keycap is located over the plate assembly. The connecting member is connected between the keycap and the plate assembly. The keycap is connected with the connecting member through at least one hook of the keycap. The keycap is movable upwardly or downwardly relative to the plate assembly through the connecting member. The buffering element is installed on the plate assembly. The buffering element is extended in a direction toward the keycap and penetrated through the hollow region of the plate assembly. While the keycap is moved downwardly and the at least one hook of the keycap is contacted with the buffering element, there is the gap between the keycap and the plate assembly.

公开(公告)号：US20200075271A1

公开(公告)日：2020-03-05

申请号：US16193914

申请日：2018-11-16

Applicant: Primax Electronics Ltd.

Inventor： Ming-Han Wu ,  Che-Wei Yang ,  Yi-Wei Chen ,  Hsien-Tsan Chang ,  Chen-Hsuan Hsu

IPC: H01H13/86 ,  H01H13/85 ,  H01H13/88

Abstract: A keyboard device includes a keyboard base, a flexible protection cover and a protective frame. The flexible protection cover is located over the keyboard base to cover the key structures that are disposed on the keyboard base. The protective frame is disposed on the flexible protection cover. Moreover, plural hollow protrusion structures of the flexible protection cover are partially penetrated through corresponding openings of the protective frame and exposed outside the protective frame. The elastic buffering parts of the flexible protection cover are disposed within corresponding concave structures of the protective frame and covered by the protective frame.

公开(公告)号：US20220293361A1

公开(公告)日：2022-09-15

申请号：US17507880

申请日：2021-10-22

Applicant: Primax Electronics Ltd.

Inventor： Ming-Han Wu ,  Yi-Wei Chen ,  Hsien-Tsan Chang

IPC: H01H13/7065 ,  H01H13/14 ,  H01H13/704 ,  H01H13/04

Abstract: A key structure includes a protective cover and a keycap. The keycap includes flow-guiding bevel surface. When the protective cover and the keycap are adhered on each other through a glue material, an excess portion of the glue material is retained on the flow-guiding bevel surface. Consequently, the excess portion of the glue material will not spread to other regions.

公开(公告)号：US10586662B2

公开(公告)日：2020-03-10

申请号：US16017129

申请日：2018-06-25

Applicant: Primax Electronics Ltd.

Inventor： Ming-Han Wu ,  Che-Wei Yang ,  Yi-Wei Chen

IPC: G06F3/02 ,  H01H13/7065 ,  H01H13/807

Abstract: A keyboard device includes a key, a base plate, a membrane circuit board and a buffering part. The membrane circuit board is disposed on the base plate. The key includes a keycap and a stabilizer bar. The stabilizer bar is connected between the keycap and the base plate. The stabilizer bar includes a main bar part, a first linking part and a first insertion part. The first linking part is connected between the main bar part and the first insertion part. The buffering part is disposed on the base plate or the membrane circuit board and located under the first linking part. While a keycap is moved downwardly relative to the base plate, the linking part of the stabilizer bar is contacted with the buffering part. The contact point between the linking part of the stabilizer bar and the buffering part is used as a fulcrum.

公开(公告)号：US20190287744A1

公开(公告)日：2019-09-19

申请号：US16017129

申请日：2018-06-25

Applicant: Primax Electronics Ltd.

Inventor： Ming-Han Wu ,  Che-Wei Yang ,  Yi-Wei Chen

IPC: H01H13/7065 ,  H01H13/807 ,  G06F3/02

Abstract: A keyboard device includes a key, a base plate, a membrane circuit board and a buffering part. The membrane circuit board is disposed on the base plate. The key includes a keycap and a stabilizer bar. The stabilizer bar is connected between the keycap and the base plate. The stabilizer bar includes a main bar part, a first linking part and a first insertion part. The first linking part is connected between the main bar part and the first insertion part. The buffering part is disposed on the base plate or the membrane circuit board and located under the first linking part. While a keycap is moved downwardly relative to the base plate, the linking part of the stabilizer bar is contacted with the buffering part. The contact point between the linking part of the stabilizer bar and the buffering part is used as a fulcrum.

公开(公告)号：US11456129B1

公开(公告)日：2022-09-27

申请号：US17507880

申请日：2021-10-22

Applicant: Primax Electronics Ltd.

Inventor： Ming-Han Wu ,  Yi-Wei Chen ,  Hsien-Tsan Chang

IPC: H01H13/7065 ,  H01H13/04 ,  H01H13/704 ,  H01H13/14

Abstract: A key structure includes a protective cover and a keycap. The keycap includes flow-guiding bevel surface. When the protective cover and the keycap are adhered on each other through a glue material, an excess portion of the glue material is retained on the flow-guiding bevel surface. Consequently, the excess portion of the glue material will not spread to other regions.