公开(公告)号：US11011330B2

公开(公告)日：2021-05-18

申请号：US16725060

申请日：2019-12-23

Applicant: Primax Electronics Ltd.

Inventor： Yi-Shu Lee ,  Lei-Lung Tsai

IPC: H01H13/85 ,  H01H13/7065

Abstract: A keyboard device includes a membrane circuit board, a base plate and a key structure. The base plate is located under the membrane circuit board. The key structure includes a lever structure, a resilience element or an interference structure. While the keycap is depressed, the lever structure, the resilience element or the interference structure collides with a keycap of the key structure, the base plate or a connecting element of the key structure. Consequently, the operating sound is generated, and the operating feedback is provided to the user.

公开(公告)号：US10020139B2

公开(公告)日：2018-07-10

申请号：US15397495

申请日：2017-01-03

Applicant: PRIMAX ELECTRONICS LTD.

Inventor： Yi-Shu Lee ,  Lei-Lung Tsai

IPC: H01H13/52 ,  H01H13/7065 ,  H01H13/83

CPC classification number: H01H13/7065 ,  H01H13/52 ,  H01H13/83 ,  H01H2215/006 ,  H01H2215/008 ,  H01H2219/028 ,  H01H2219/036 ,  H01H2219/062 ,  H01H2221/07 ,  H01H2227/036

Abstract: A key structure includes a base plate, an illumination module, a switch circuit board, a metallic elastic element, a supporting element, a metallic pressing plate and a covering member. The metallic elastic element is disposed on the switch circuit board. The supporting element is located beside the metallic elastic element. An edge of the metallic pressing plate is fixed on the supporting element. As the metallic pressing plate is swung relative to the base plate to push the metallic elastic element, the switch circuit board is triggered by the metallic elastic element. The covering member covers the base plate and the metallic pressing plate. The covering member has a light-transmissible region. A light beam from the illumination module passes through the light-transmissible region. Consequently, the key structure is illuminated.

公开(公告)号：US20180143698A1

公开(公告)日：2018-05-24

申请号：US15397484

申请日：2017-01-03

Applicant: PRIMAX ELECTRONICS LTD.

Inventor： Yi-Shu Lee ,  Lei-Lung Tsai

IPC: G06F3/02 ,  G06F3/023

CPC classification number: G06F3/0221 ,  G06F3/0202 ,  G06F3/0238 ,  H01H13/83 ,  H01H2219/034 ,  H01H2219/062 ,  H03K2217/9655

Abstract: A keyboard includes a base plate, a switch circuit board, plural swinging-type key structures, a light-emitting element, a light guide plate and a covering member. The light-emitting element emits a light beam. The plural swinging-type key structures are disposed on the switch circuit board. When one of the swinging-type key structures is pressed, the switch circuit board is triggered to generate a key signal. The light guide plate comprises plural light guide sub-plates. The light guide sub-plates are disposed on the corresponding swinging-type key structures. The covering member covers the base plate and the light guide plate. The covering member has a light-transmissible region. The light beam from the light-emitting element passes through the light-transmissible region. Consequently, the key structure is illuminated.

公开(公告)号：US09972464B2

公开(公告)日：2018-05-15

申请号：US15366374

申请日：2016-12-01

Applicant: Primax Electronics Ltd.

Inventor： Lei-Lung Tsai ,  Yi-Shu Lee

IPC: H01H1/10 ,  H01H13/705 ,  H01H3/12 ,  H01H5/04

CPC classification number: H01H13/705 ,  H01H3/12 ,  H01H3/122 ,  H01H5/04 ,  H01H2233/01

Abstract: A key structure includes a base plate, a keycap and a connecting element. The connecting element includes a first frame and a second frame. The first frame is connected with the base plate and the keycap. The first frame includes a first linking part. The second frame is connected with the base plate and the keycap. The second frame includes a second linking part. The second linking part is contacted with the first linking part. When a depressing force from the user is applied to the keycap, the first frame is swung relative to the second frame. Moreover, in response to a friction between the first linking part and the second linking part, the keycap is correspondingly moved.

公开(公告)号：US09633800B1

公开(公告)日：2017-04-25

申请号：US15077818

申请日：2016-03-22

Applicant: Primax Electronics Ltd.

Inventor： Lei-Lung Tsai ,  Yi-Shu Lee

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

CPC classification number: H01H3/122 ,  H01H3/125 ,  H01H13/14 ,  H01H13/705 ,  H01H2217/004 ,  H01H2227/036

Abstract: A key structure includes a base, a keycap, a first longitudinal bar, a second longitudinal bar, a first transverse bar and a second transverse bar. The first longitudinal bar, the second longitudinal bar, the first transverse bar and the second transverse bar are uniformly distributed in the range of the keycap. Consequently, the keycap is stably moved relative to the base. The first longitudinal bar, the second longitudinal bar, the first transverse bar and the second transverse bar are made of a metallic material. Since these bars are thinner than the scissors-type connecting element of the conventional key structure, the key structure of the present invention has reduced thickness. Moreover, since these bars are made of the metallic material, the structural strength of the key structure is increased.

公开(公告)号：US20210098211A1

公开(公告)日：2021-04-01

申请号：US16725060

申请日：2019-12-23

Applicant: Primax Electronics Ltd.

Inventor： Yi-Shu Lee ,  Lei-Lung Tsai

IPC: H01H13/85 ,  H01H13/7065

Abstract: A keyboard device includes a membrane circuit board, a base plate and a key structure. The base plate is located under the membrane circuit board. The key structure includes a lever structure, a resilience element or an interference structure. While the keycap is depressed, the lever structure, the resilience element or the interference structure collides with a keycap of the key structure, the base plate or a connecting element of the key structure. Consequently, the operating sound is generated, and the operating feedback is provided to the user.

公开(公告)号：US10509482B1

公开(公告)日：2019-12-17

申请号：US16192189

申请日：2018-11-15

Applicant: Primax Electronics Ltd.

Inventor： Lei-Lung Tsai ,  Yi-Shu Lee

IPC: H01H13/7065 ,  G06F3/02 ,  H03K17/967

Abstract: A keyboard device includes a base plate with a base plate with a connecting bracket, a wing-type connecting element and a keycap. A first connecting shaft of the wing-type connecting element is inserted into the connecting bracket, so that the wing-type connecting element is connected with the base plate. While the keycap is depressed, the first connecting shaft is inserted into a first receiving space of the connecting shaft and used as a swinging fulcrum. Since the vertical movement of the wing-type connecting element is restricted by the first receiving space, the swinging range of the wing-type connecting element is reduced. Consequently, the keyboard device of the present invention is capable of improving the depressing stability of the keycap.

公开(公告)号：US10403452B1

公开(公告)日：2019-09-03

申请号：US16144853

申请日：2018-09-27

Applicant: Primax Electronics Ltd.

Inventor： Yi-Shu Lee ,  Lei-Lung Tsai

IPC: H01H13/10 ,  H01H13/7065 ,  H01H13/26 ,  G06F3/02

Abstract: A keyboard device includes a base plate, a butterfly-type connecting element and a keycap assembly. The keycap assembly includes a coupling frame and a keycap. The coupling frame includes a first coupling part. The keycap includes a second coupling part. The butterfly-type connecting element is connected with the base plate and the coupling frame. The coupling frame and the butterfly-type connecting element are combined together through the first coupling part and the second coupling part. When the pressing force is acted on a corner of the keycap, the pressing force can be transferred to the whole keycap through the coupling frame. Consequently, the pressing force can be effectively transferred.

公开(公告)号：US20180144885A1

公开(公告)日：2018-05-24

申请号：US15397495

申请日：2017-01-03

Applicant: PRIMAX ELECTRONICS LTD.

Inventor： Yi-Shu Lee ,  Lei-Lung Tsai

IPC: H01H13/7065 ,  H01H13/52 ,  H01H13/83

CPC classification number: H01H13/7065 ,  H01H13/52 ,  H01H13/83 ,  H01H2215/008 ,  H01H2219/036

Abstract: A key structure includes a base plate, an illumination module, a switch circuit board, a metallic elastic element, a supporting element, a metallic pressing plate and a covering member. The metallic elastic element is disposed on the switch circuit board. The supporting element is located beside the metallic elastic element. An edge of the metallic pressing plate is fixed on the supporting element. As the metallic pressing plate is swung relative to the base plate to push the metallic elastic element, the switch circuit board is triggered by the metallic elastic element. The covering member covers the base plate and the metallic pressing plate. The covering member has a light-transmissible region. A light beam from the illumination module passes through the light-transmissible region. Consequently, the key structure is illuminated.