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：US20180308647A1

公开(公告)日：2018-10-25

申请号：US15790187

申请日：2017-10-23

Applicant: Primax Electronics Ltd.

Inventor： Chun-Yuan Liu

IPC: H01H13/14 ,  H01H13/10

CPC classification number: H01H13/14 ,  H01H3/125 ,  H01H3/60 ,  H01H13/10 ,  H01H2013/525

Abstract: A key structure includes a base plate, a triggering element, a keycap and a scissors-type connecting element. The base plate includes an open-type hook and a bulge. The scissors-type connecting element includes a first frame and a second frame. The first frame includes a first base post and an elastic contact part. Due to the structure of the open-type hook, the first frame can be easily assembled with the base plate. Moreover, it is not necessary to retain the gap between the first base posit and the open-type hook. While the first frame is swung, the elastic contact part is pushed by the corresponding bulge. Consequently, the first base post is not detached from the base plate.

公开(公告)号：US10170253B2

公开(公告)日：2019-01-01

申请号：US15790187

申请日：2017-10-23

Applicant: Primax Electronics Ltd.

Inventor： Chun-Yuan Liu

IPC: H01H3/12 ,  H01H13/14 ,  H01H13/10 ,  H01H3/60 ,  H01H13/52

Abstract: A key structure includes a base plate, a triggering element, a keycap and a scissors-type connecting element. The base plate includes an open-type hook and a bulge. The scissors-type connecting element includes a first frame and a second frame. The first frame includes a first base post and an elastic contact part. Due to the structure of the open-type hook, the first frame can be easily assembled with the base plate. Moreover, it is not necessary to retain the gap between the first base posit and the open-type hook. While the first frame is swung, the elastic contact part is pushed by the corresponding bulge. Consequently, the first base post is not detached from the base plate.

公开(公告)号：US10607793B1

公开(公告)日：2020-03-31

申请号：US16263957

申请日：2019-01-31

Applicant: Primax Electronics Ltd.

Inventor： Chun-Yuan Liu ,  Che-Wei Yang ,  Ming-Han Wu

IPC: H01H13/7065 ,  H01H13/803 ,  G06F3/02

Abstract: A keyboard device includes a base plate and a key structure. The key structure includes a keycap, a first connecting element, a second connecting element and a stabilizer bar. The first connecting element and the second connecting element are arranged between the base plate and the keycap and connected with the base plate and the keycap. The stabilizer bar is fixed on the first connecting element and the second connecting element. Since the stabilizer bar does not collide with the base plate to generate the unpleasant noise, the keyboard device of the present invention is capable of reducing the noise. Moreover, since the stabilizer bar is fixed on the first connecting element and the second connecting element, it is not necessary to install hooks corresponding to the stabilizer bar on the keycap and the base plate and the fabricating cost is reduced.

公开(公告)号：US20180053611A1

公开(公告)日：2018-02-22

申请号：US15360150

申请日：2016-11-23

Applicant: PRIMAX ELECTRONICS LTD.

Inventor： Che-Wei Yang ,  Chun-Yuan Liu

IPC: H01H13/83 ,  H01H13/7065

CPC classification number: H01H13/83 ,  H01H3/125 ,  H01H13/7065 ,  H01H2215/006 ,  H01H2219/039 ,  H01H2219/048 ,  H01H2219/054 ,  H01H2219/062

Abstract: A light color changeable illuminated keyboard includes a circuit layer, plural keys, a switching key, a bicolor light-emitting element and a control unit. The plural keys and the switching key are disposed on the circuit layer. The bicolor light-emitting element is located under the plural keys. The bicolor light-emitting element selectively emits a first color light or a second color light. The control unit is electrically connected with the switching key and the bicolor light-emitting element. If the switching key is pressed down when the bicolor light-emitting element emits the first color light, a pressing signal is generated. In response to the pressing signal, the color light emitted by the bicolor light-emitting element is switched from the first color light to the second color light under control of the control unit.

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：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：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：US10147568B1

公开(公告)日：2018-12-04

申请号：US15811639

申请日：2017-11-13

Applicant: Primax Electronics Ltd.

Inventor： Tien-Yu Yeh ,  Che-Wei Yang ,  Chun-Yuan Liu

IPC: H01H9/26 ,  H01H13/72 ,  H01H13/76 ,  H01H13/705

Abstract: A keyboard device includes a base plate, a connecting element and a keycap. The connecting element is connected with a hook of the keycap and the base plate. The keycap includes an elastic structure, a first hooking part and a second hooking part. The elastic structure hook is installed on an inner surface of the keycap. The first hooking part is arranged beside a first side of the elastic structure. The second hooking part is arranged beside a second side of the elastic structure. While the connecting element is assembled with the keycap, the first hooking part and the second hooking part are pushed by the connecting element and the keycap is bent in response to the elasticity of the elastic structure. Consequently, the first hooking part is moved away from the second hooking part.

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.