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：US10340100B1

公开(公告)日：2019-07-02

申请号：US16017279

申请日：2018-06-25

Applicant: Primax Electronics Ltd.

Inventor： Che-Wei Yang ,  Tien-Yu Yeh ,  Ming-Han Wu

IPC: H01H13/14 ,  H01H13/50 ,  G06F3/02 ,  H01H13/04 ,  H01H13/20 ,  H01H13/70

Abstract: A keyboard device includes a key switch, a base plate, a connecting element and a replaceable key. The replaceable key includes a coupling plate and a keycap. The connecting element is connected between the coupling plate and the base plate. The coupling plate includes a first sliding part. The keycap includes a second sliding part. When the second sliding part is slid relative to the first sliding part, the keycap is combined with the coupling plate or the keycap is detached from the coupling plate. Consequently, the keycap is easily assembled or disassembled. Moreover, since the connecting element is not touched during the process of disassembling the keycap, the connecting element is not damaged.

公开(公告)号：US09941072B1

公开(公告)日：2018-04-10

申请号：US15450437

申请日：2017-03-06

Applicant: Primax Electronics Ltd.

Inventor： Bo-An Chen ,  Hsien-Tsan Chang ,  Yi-Chen Wang ,  Chen-Hsuan Hsu ,  Chin-Sung Pan ,  Ming-Han Wu

IPC: H01H13/83 ,  H01H13/70 ,  H01H13/14 ,  H01H3/12 ,  H01H13/705

CPC classification number: H01H13/70 ,  H01H3/122 ,  H01H3/125 ,  H01H13/14 ,  H01H13/705 ,  H01H13/83 ,  H01H2219/044 ,  H01H2219/062 ,  H01H2221/062 ,  H01H2233/01

Abstract: A keyboard device includes a key structure, a switch circuit board, a base plate, a soft covering element and a buffering pad. The key structure includes a keycap and a stabilizer bar. The stabilizer bar is connected with the keycap and the soft covering element. The soft covering element is disposed on the base plate. An accommodation space is defined by the soft covering element and the base plate collaboratively. The stabilizer bar is inserted into the accommodation space, so that the stabilizer bar is connected with the base plate. The buffering pad is disposed on the base plate and partially received within the accommodation space. The stabilizer bar and the base plate are made of metallic material. Since the stabilizer bar and the base plate are separated by the soft covering element and the buffering pad, the keyboard device is capable of reducing noise.

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：US11287899B1

公开(公告)日：2022-03-29

申请号：US17240295

申请日：2021-04-26

Applicant: Primax Electronics Ltd.

Inventor： Ming-Han Wu ,  Hsien-Tsan Chang

IPC: G09G5/00 ,  G06F3/02 ,  H01H13/06 ,  H01H13/703 ,  H01H13/88 ,  H01H13/86

Abstract: A keyboard device with a protecting function and a manufacturing method of the keyboard device are provided. Firstly, a mold is provided. Then, a frame material is placed into the mold to form a frame body, and a film material is placed into the mold to form a protective film. Consequently, the protective film is fixed on the frame body. After the mold is removed, a keyboard module is assembled with the frame body. Consequently, the keyboard device is manufactured. The protective film includes a sheet-like portion, plural connection portions and plural covering portions. The frame body includes plural spacer structures and plural perforations. The sheet-like portion is fixed on the plural spacer structures. The keyboard module includes a base plate and plural keys. The keycap is penetrated through the corresponding perforation and contacted with the corresponding covering portion.

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：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：US09959990B1

公开(公告)日：2018-05-01

申请号：US15627083

申请日：2017-06-19

Applicant: Primax Electronics Ltd.

Inventor： Chin-Sung Pan ,  Ming-Han Wu

IPC: H01H3/12 ,  H01H13/14 ,  H01H13/10 ,  H01H13/70 ,  H01H13/52

CPC classification number: H01H13/14 ,  H01H13/10 ,  H01H13/52 ,  H01H13/70

Abstract: A keyboard device includes a key structure, a switch circuit board, a base plate and a buffering element. The key structure includes a keycap and a stabilizer bar. The stabilizer bar is connected with the keycap. The base plate includes a connecting structure. The stabilizer bar is penetrated through the connecting structure and connected with the base plate. The buffering element is coupled with the connecting structure. The stabilizer bar and the base plate are made of metallic material. Since the stabilizer bar and the base plate are separated by the buffering element, the keyboard device is capable of reducing noise.