公开(公告)号：US20220404315A1

公开(公告)日：2022-12-22

申请号：US17411834

申请日：2021-08-25

Applicant: Primax Electronics Ltd.

Inventor： Chin-Sung Pan ,  Chien-Hung Liu ,  Chia-Wei Chang

IPC: G01N29/04 ,  G01N29/14

Abstract: A resonance detection system includes a vibration simulation mechanism and a vibration audio analysis device. The vibration simulation mechanism includes a mechanism body that accommodates a peripheral interface device. The vibration simulation mechanism generates a vibration wave to the peripheral interface device. The peripheral interface device generates a vibration audio signal in response to the vibration wave. The vibration audio analysis device is electrically connected with the vibration simulation mechanism. After the vibration audio signal is inputted into the vibration audio analysis device, the vibration audio analysis device judges whether there is an abnormal resonance phenomenon in the vibration audio signal. The vibration simulation mechanism further includes a patch-type audio collector, which is electrically connected with the vibration audio analysis device. The patch-type audio collector is attached on the mechanism body containing the peripheral interface device. The vibration audio signal is collected by the patch-type audio collector.

公开(公告)号：US11177084B1

公开(公告)日：2021-11-16

申请号：US17108404

申请日：2020-12-01

Applicant: Primax Electronics Ltd.

Inventor： Chien-Hung Liu

IPC: H01H3/12 ,  H01H13/702

Abstract: A key structure includes a keycap, an elastic buffering element, a base plate, a first supporting element, a second supporting element and an elastomer. The elastic buffering element is installed in a locking part of the keycap. The first supporting element is connected with the keycap and the base plate. The keycap is movable upwardly or downwardly relative to the base plate through the first supporting element. A first end of the second supporting element is pivotally coupled to the base plate. A second end of the second supporting element is penetrated through a pivotal hole of the elastic buffering element and a clamping recess of the locking part. The elastomer is arranged between the keycap and the base plate. An inner diameter of the at least one pivotal hole is slightly smaller than an inner diameter of the clamping recess.

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：US20200243277A1

公开(公告)日：2020-07-30

申请号：US16395007

申请日：2019-04-25

Applicant: Primax Electronics Ltd.

Inventor： Bo-An Chen ,  Chien-Hung Liu ,  Lei-Lung Tsai ,  Chin-Sung Pan

IPC: H01H13/10 ,  H05K1/11 ,  H01H13/704

Abstract: A membrane circuit board includes a first flexible circuit board, a second flexible circuit board and a nanomaterial layer. The nanomaterial layer includes plural polymeric structures. The nanomaterial layer is formed on the first flexible circuit board, the second flexible circuit board and/or a junction region between the edge of the first flexible circuit board and the second flexible circuit board to prevent at least one of the upper metallic conductor line and the lower metallic conductor line from contacting with a specified chemical element. Consequently, the conductive impedance of the upper metallic conductor line and the lower metallic conductor line is not affected by the specified chemical element. Moreover, the present invention also provides a keyboard device with the membrane circuit board.

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：US09959994B1

公开(公告)日：2018-05-01

申请号：US15410943

申请日：2017-01-20

Applicant: PRIMAX ELECTRONICS LTD.

Inventor： Chien-Hung Liu

IPC: H01H13/81 ,  H01H3/12 ,  H01H13/52 ,  H05K1/18

CPC classification number: H01H13/81 ,  H01H3/12 ,  H01H13/52 ,  H05K1/181 ,  H05K2201/10053 ,  H05K2201/10507

Abstract: A keyboard includes a base plate, a pressure sensing layer, plural key structures, a circuit board, a flexible layer and a controlling unit. The pressure sensing layer is disposed on the base plate and located under the circuit board. The flexible layer is disposed on the pressure sensing layer and located under the circuit board. While a key structure is depressed, a part of the key structure is penetrated through the circuit board to press the flexible layer, and a force is transmitted from the flexible layer to the pressure sensing layer. The controlling unit compares the force with a predetermined force value. According to the comparing result, the controlling unit generates a corresponding pressure sensing signal. Consequently, the use of a single key structure can achieve the functions of multiple keys.

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：US10755873B2

公开(公告)日：2020-08-25

申请号：US16395007

申请日：2019-04-25

Applicant: Primax Electronics Ltd.

Inventor： Bo-An Chen ,  Chien-Hung Liu ,  Lei-Lung Tsai ,  Chin-Sung Pan

IPC: H05K1/03 ,  H01H13/10 ,  H05K1/11 ,  H01H13/704 ,  H01H13/14 ,  H01H13/7065 ,  H05K1/09

Abstract: A membrane circuit board includes a first flexible circuit board, a second flexible circuit board and a nanomaterial layer. The nanomaterial layer includes plural polymeric structures. The nanomaterial layer is formed on the first flexible circuit board, the second flexible circuit board and/or a junction region between the edge of the first flexible circuit board and the second flexible circuit board to prevent at least one of the upper metallic conductor line and the lower metallic conductor line from contacting with a specified chemical element. Consequently, the conductive impedance of the upper metallic conductor line and the lower metallic conductor line is not affected by the specified chemical element. Moreover, the present invention also provides a keyboard device with the membrane circuit board.

公开(公告)号：US10020135B2

公开(公告)日：2018-07-10

申请号：US15220611

申请日：2016-07-27

Applicant: PRIMAX ELECTRONICS LTD.

Inventor： Yi Chen Chung ,  Chien-Hung Liu

IPC: H01H13/70 ,  H01H13/14 ,  H01H13/52

CPC classification number: H01H13/14 ,  H01H3/125 ,  H01H13/52

Abstract: A scissors-type connecting member includes a first frame and a second frame. The first frame includes a rotating shaft. The second frame includes a pivot hole, an entrance and a stopper. After the rotating shaft is introduced into the pivot hole through the entrance, the first frame is pivotally coupled to the second frame. The stopper is located near the entrance or arranged between the entrance and the pivot hole. A position of the rotating shaft is limited between the stopper and the pivotal hole by the stopper. Consequently, the scissors-type connecting member is assembled easily, and the stability of connecting a first frame and a second frame of the scissors-type connecting member is enhanced. Moreover, the present invention also provides a key structure with the scissors-type connecting member.

公开(公告)号：US09941068B2

公开(公告)日：2018-04-10

申请号：US15157177

申请日：2016-05-17

Applicant: Primax Electronics Ltd.

Inventor： Chien-Hung Liu

IPC: H01H13/14 ,  H01H13/84

CPC classification number: H01H13/14 ,  H01H3/50 ,  H01H13/84 ,  H01H2215/03 ,  H01H2227/036 ,  H01H2239/022

Abstract: A key structure includes a pedestal with a sliding groove, an upper cover, a triggering element, and a spring strip. The spring strip is movable within the sliding groove. The triggering element is arranged between the pedestal and the upper cover, and located beside the spring strip. When a keycap of the key structure is depressed, the triggering element is moved relative to the pedestal to push the spring strip. In response to the elasticity of the pushed spring strip, the spring strip is slid within the sliding groove to collide with the upper cover. Consequently, the key structure generates sound surely.