公开(公告)号：US20240049408A1

公开(公告)日：2024-02-08

申请号：US17945445

申请日：2022-09-15

Applicant: Primax Electronics Ltd.

Inventor： Fang-Lung Yuan ,  Tsu-Yi Chen

IPC: H05K5/02

CPC classification number: H05K5/0215

Abstract: A keyboard module is provided, which includes a membrane circuit board, a base plate and a waterproof breathable film. The membrane circuit board has an air channel and at least one air hole communicating with the air channel and exposed from a lower surface of the membrane circuit board. The base plate is disposed beneath the membrane circuit board, in which the base plate has a first opening through the base plate and communicating with the air hole. The waterproof breathable film is disposed beneath the base plate and covers the first opening.

公开(公告)号：US10903024B1

公开(公告)日：2021-01-26

申请号：US16833888

申请日：2020-03-30

Applicant: Primax Electronics Ltd.

Inventor： Chun-Yuan Liu ,  Tsu-Yi Chen ,  Lei-Lung Tsai

IPC: H01H13/703 ,  H01H13/7065

Abstract: A keyboard device includes a membrane circuit board, a base plate, a coupling structure and a key structure. The base plate includes a substrate and a protrusion structure. The protrusion structure is bent and protruded upwardly from the substrate. A bent region is formed between the protrusion structure and the substrate. A coupling opening is formed in the bent region. The coupling structure filled in the coupling opening to cover the protrusion structure. The key structure includes a keycap and a connecting element. The connecting element is connected between the keycap and the coupling structure.

公开(公告)号：US10032575B2

公开(公告)日：2018-07-24

申请号：US15367732

申请日：2016-12-02

Applicant: Primax Electronics Ltd.

Inventor： Tsu-Yi Chen

IPC: H01H1/10 ,  H01H13/704 ,  H01H13/14 ,  H01H13/7065 ,  H01H13/703

Abstract: A keyboard device includes a base plate, a key and a membrane circuit board. The key is connected with the base plate. The membrane circuit board is arranged between the key and the base plate. The base plate includes a connecting structure. The connecting structure is protruded upwardly and penetrated through the membrane circuit board. The key includes a keycap and a stabilizer bar. The stabilizer bar is pivotally coupled to the keycap. A hook part of the stabilizer bar is penetrated through a corresponding locking hole of the connecting structure. A film layer of the membrane circuit board includes an extension part. A gel layer is formed on the extension part. While the keycap is moved upwardly or downwardly relative to the base plate, the hook part of the stabilizer bar is moved on the gel layer.

公开(公告)号：US20190013160A1

公开(公告)日：2019-01-10

申请号：US15790937

申请日：2017-10-23

Applicant: Primax Electronics Ltd.

Inventor： Hsiang-Wen Cheng ,  Tsu-Yi Chen ,  Chen-Hsuan Hsu

IPC: H01H13/10 ,  H01H13/70 ,  H01H13/14

Abstract: The present invention relates to a keyboard, including a base plate, a connecting element, a keycap, and a hook. The connecting element is separately connected to the hook and the base plate. The hook is disposed on an inner surface of the keycap and is connected to a connecting shaft of the connecting element. The hook includes a first fixing portion and a second fixing portion. The first fixing portion is in contact with a first side of the connecting shaft, and the second fixing portion is in contact with a second side of the connecting shaft. The structure of the second fixing portion in the hook is stronger than the structure of the first fixing portion, so that when the connecting shaft is applied with a force to be out of the hook, the first fixing portion is applied with an interference force to be broken, thereby having a recognizing effect.

公开(公告)号：US20180053610A1

公开(公告)日：2018-02-22

申请号：US15337805

申请日：2016-10-28

Applicant: PRIMAX ELECTRONICS LTD.

Inventor： Chun-Yuan Liu ,  Tsu-Yi Chen

IPC: H01H13/83 ,  G06F3/02 ,  F21V33/00 ,  F21V8/00 ,  H01H13/702 ,  H01H13/7065

CPC classification number: H01H13/83 ,  F21V33/0052 ,  G02B6/0038 ,  G02B6/005 ,  G02B6/0053 ,  G06F3/0202 ,  H01H3/125 ,  H01H13/702 ,  H01H13/7065 ,  H01H2219/058 ,  H01H2219/062 ,  H01H2219/064 ,  H01H2219/066

Abstract: A luminous keyboard includes plural key structures and a light guide plate. Moreover, plural elongated condenser structures are formed on a top surface of the light guide plate. Each of the plural elongated condenser structures has a long axial direction. The plural elongated condenser structures are distributed in parallel and along a direction perpendicular to the long axial direction. After plural light beams pass through the elongated condenser structures in the upward direction, the beam angles of the light beams from the light guide plate are converged by the elongated condenser structures. Consequently, the brightness of the backlight is increased. Moreover, the light beams do not leak from the vacant spaces between adjacent key structures.

公开(公告)号：US09627158B2

公开(公告)日：2017-04-18

申请号：US14867346

申请日：2015-09-28

Applicant: Primax Electronics Ltd.

Inventor： Hsien-Tsan Chang ,  Tsu-Yi Chen

IPC: H01H13/70 ,  H01H13/7065 ,  H01H13/02

CPC classification number: H01H13/7065 ,  H01H3/125 ,  H01H13/023 ,  H01H2205/002 ,  H01H2219/036

Abstract: A keyboard module includes a first key and a second key. The first key includes a first keycap and a first scissors-type connecting element. The first scissors-type connecting element includes a first outer frame and a first inner frame. The second key includes a second keycap and a second scissors-type connecting element. The second scissors-type connecting element includes a second outer frame and a second inner frame. The first outer frame, the first inner frame and the second inner frame have symmetrical structures. The second outer frame has an asymmetrical structure.

公开(公告)号：US11430620B1

公开(公告)日：2022-08-30

申请号：US17389074

申请日：2021-07-29

Applicant: Primax Electronics Ltd.

Inventor： Chun-Yuan Liu ,  Tsu-Yi Chen ,  Lei-Lung Tsai

IPC: H01H13/12 ,  H01H13/7065 ,  H01H3/12

Abstract: A keyboard device includes plural key structures. Each key structure includes a base plate, a keycap, a connecting member and at least one raised structure. The keycap is located over the base plate. The connecting member is arranged between the base plate and the keycap. The keycap is movable upwardly or downwardly relative to the base plate through the connecting member. The connecting member includes at least one first hook part. The raised structure is installed on the base plate. The first hook part is connected with the raised structure. The raised structure includes a top wall, a lateral wall and a perforation. The lateral wall is connected between the top wall and the base plate. The perforation is formed in the lateral wall. The first hook part is penetrated through the perforation and contacted with the top wall.

公开(公告)号：US11373820B1

公开(公告)日：2022-06-28

申请号：US17334369

申请日：2021-05-28

Applicant: Primax Electronics Ltd.

Inventor： Shau-Cheng Sun ,  Tsu-Yi Chen

IPC: H01H13/14 ,  H01H3/12

Abstract: A key structure includes a keycap, a base plate, a first scissors-type connecting element, a second scissors-type connecting element and a coupling plate. The first scissors-type connecting element and the second scissors-type connecting element are arranged between the keycap and the base plate. The first scissors-type connecting element is upwardly assembled with the keycap and downwardly assembled with the base plate. The first scissors-type connecting element includes a first inner frame and a first outer frame. The second scissors-type connecting element is upwardly assembled with the keycap and downwardly assembled with the base plate. The second scissors-type connecting element includes a second inner frame and a second outer frame. The coupling plate is arranged between the first outer frame and the second outer frame. The coupling plate is detachably assembled with the first outer frame and the second outer frame.

公开(公告)号：US11145474B1

公开(公告)日：2021-10-12

申请号：US17004828

申请日：2020-08-27

Applicant: Primax Electronics Ltd.

Inventor： Chin-Sung Pan ,  Chien-Hung Liu ,  Lei-Lung Tsai ,  Sheng-Fan Chang ,  Tsu-Yi Chen ,  Chun-Yuan Liu

IPC: H01H13/14 ,  H01H13/70 ,  H01H13/10

Abstract: A keyboard device includes plural key structures. Each key structure includes a supporting plate, a keycap, a connecting member and a hook element. The keycap is located over the supporting plate, and movable upwardly or downwardly relative to the supporting plate. The connecting member is connected between the supporting plate and the keycap. The hook element is installed on the supporting plate. The connecting member is connected with the supporting plate through the hook element. The supporting plate is made of a first material with a first specific gravity. The hook element is made of a second material with a second specific gravity. The second specific gravity is higher than the first specific gravity.

公开(公告)号：US10026566B1

公开(公告)日：2018-07-17

申请号：US15596110

申请日：2017-05-16

Applicant: Primax Electronics Ltd.

Inventor： Bo-An Chen ,  Wei-Yung Huang ,  Tsu-Yi Chen ,  Chun-Yuan Liu ,  Chin-Sung Pan

IPC: H01H3/12 ,  H01H13/705

Abstract: A keyboard device includes a key structure, a switch circuit board, a base plate and a buffering strip. The key structure includes a keycap and a stabilizer bar. The stabilizer bar is connected with the keycap. A first end of the buffering strip is fixed in a first coupling structure of the keycap. A second end of the buffering strip is fixed in a second coupling structure of the keycap. The buffering strip is contacted with the stabilizer bar and filled in a gap between the stabilizer bar and the first coupling structure. Since the possibility of resulting in the collision between the stabilizer bar and the keycap is minimized, the keycap device is capable of reducing noise.