公开(公告)号：US10950394B2

公开(公告)日：2021-03-16

申请号：US16442531

申请日：2019-06-16

Applicant: DARFON ELECTRONICS CORP.

Inventor： Pen-Hui Liao ,  Chin-Hung Lin ,  Yen-Hsiao Lin ,  Hsin-Hung Liu ,  Chia-Fu Cheng

IPC: H01H13/14

Abstract: A key switch includes a base, a key cap, a supporting mechanism, a link bar and a buffer member. The key cap is disposed above the base. The supporting mechanism is connected to the key cap and the base to allow the key cap to move relative to the base upwardly and downwardly. The link bar includes a lower linking end. The buffer member and the base are two independent components. The buffer member is disposed on the base and made of material softer than material of the base. A restraining structure is formed on the buffer member. The lower linking end movably passes through the restraining structure. When the key cap moves relative to the base upwardly and downwardly, the lower linking end is driven to move within the restraining structure correspondingly, so as to reduce noise during movement of the lower linking end relative to the base.

公开(公告)号：US10535477B2

公开(公告)日：2020-01-14

申请号：US16260066

申请日：2019-01-28

Applicant: DARFON ELECTRONICS CORP.

Inventor： Yu-Chun Hsieh ,  Yung-Chih Wang ,  Chen Yang ,  Chia-Hung Liu ,  Yen-Hsiao Lin

IPC: H01H13/14 ,  H01H1/24 ,  H01H13/705 ,  H01H13/28 ,  H01H3/46 ,  H01H13/10

Abstract: A button switch includes a base having a pillar, a cover disposed on the base, a sleeve, an arm adjacent to the pillar and an elastic member having upward-force-applying, extending-rod, and flexible-rod portions. The sleeve jackets the pillar, passes through the cover, and has first and second ribs. The upward-force-applying portion jackets the pillar and abuts against the sleeve and the base to drive the sleeve to move away from the base. The extending-rod portion extends from the upward-force-applying portion to be connected to the flexible-rod portion located under the first rib. When the sleeve is located at a high position, the second rib biases the arm to deform. When the sleeve is located at a low position, the second rib is misaligned with the arm. The flexible-rod portion crosses the first rib to be released and then collides with the cover to make sound as the sleeve is pressed.

公开(公告)号：US20190244770A1

公开(公告)日：2019-08-08

申请号：US16260066

申请日：2019-01-28

Applicant: DARFON ELECTRONICS CORP.

Inventor： Yu-Chun Hsieh ,  Yung-Chih Wang ,  Chen Yang ,  Chia-Hung Liu ,  Yen-Hsiao Lin

IPC: H01H13/14 ,  H01H1/24 ,  H01H13/705 ,  H01H13/10 ,  H01H13/28 ,  H01H3/46

Abstract: A button switch includes a base having a pillar, a cover disposed on the base, a sleeve, an arm adjacent to the pillar and an elastic member having upward-force-applying, extending-rod, and flexible-rod portions. The sleeve jackets the pillar, passes through the cover, and has first and second ribs. The upward-force-applying portion jackets the pillar and abuts against the sleeve and the base to drive the sleeve to move away from the base. The extending-rod portion extends from the upward-force-applying portion to be connected to the flexible-rod portion located under the first rib. When the sleeve is located at a high position, the second rib biases the arm to deform. When the sleeve is located at a low position, the second rib is misaligned with the arm. The flexible-rod portion crosses the first rib to be released and then collides with the cover to make sound as the sleeve is pressed.

公开(公告)号：US20180350537A1

公开(公告)日：2018-12-06

申请号：US15993628

申请日：2018-05-31

Applicant: DARFON ELECTRONICS CORP.

Inventor： Pen-Hui Liao ,  Chin-Hung Lin ,  Yen-Hsiao Lin ,  Hsin-Hung Liu ,  Chia-Fu Cheng

IPC: H01H13/84 ,  H01H13/88

CPC classification number: H01H13/84 ,  H01H13/705 ,  H01H13/85 ,  H01H13/88 ,  H01H2221/062

Abstract: A key switch includes a base, a key cap, a link bar and a buffer member. A first hook of a first extending arm of the base and a second hook of a second extending arm of the base extend toward opposite directions respectively. An upper linking end of the link bar is movably connected to the key cap. The buffer member is made of material softer than material of the base. When the first hook and the second hook engage with a first engaging portion and a second engaging portion of the buffer member respectively, a recess structure of the buffer member is adjacent to the base to form a restraining structure. A lower linking end of the link bar is movably disposed through the restraining structure. Therefore, the key switch of the present invention has noise reduction capability.

公开(公告)号：US20190304717A1

公开(公告)日：2019-10-03

申请号：US16442531

申请日：2019-06-16

Applicant: DARFON ELECTRONICS CORP.

Inventor： Pen-Hui Liao ,  Chin-Hung Lin ,  Yen-Hsiao Lin ,  Hsin-Hung Liu ,  Chia-Fu Cheng

IPC: H01H13/14

Abstract: A key switch includes a base, a key cap, a supporting mechanism, a link bar and a buffer member. The key cap is disposed above the base. The supporting mechanism is connected to the key cap and the base to allow the key cap to move relative to the base upwardly and downwardly. The link bar includes a lower linking end. The buffer member and the base are two independent components. The buffer member is disposed on the base and made of material softer than material of the base. A restraining structure is formed on the buffer member. The lower linking end movably passes through the restraining structure. When the key cap moves relative to the base upwardly and downwardly, the lower linking end is driven to move within the restraining structure correspondingly, so as to reduce noise during movement of the lower linking end relative to the base.

公开(公告)号：US10373779B2

公开(公告)日：2019-08-06

申请号：US15993628

申请日：2018-05-31

Applicant: DARFON ELECTRONICS CORP.

Inventor： Pen-Hui Liao ,  Chin-Hung Lin ,  Yen-Hsiao Lin ,  Hsin-Hung Liu ,  Chia-Fu Cheng

IPC: H01H13/85 ,  H01H13/705 ,  H01H13/84 ,  H01H13/88

Abstract: A key switch includes a base, a key cap, a link bar and a buffer member. A first hook of a first extending arm of the base and a second hook of a second extending arm of the base extend toward opposite directions respectively. An upper linking end of the link bar is movably connected to the key cap. The buffer member is made of material softer than material of the base. When the first hook and the second hook engage with a first engaging portion and a second engaging portion of the buffer member respectively, a recess structure of the buffer member is adjacent to the base to form a restraining structure. A lower linking end of the link bar is movably disposed through the restraining structure. Therefore, the key switch of the present invention has noise reduction capability.