公开(公告)号：US20030213684A1

公开(公告)日：2003-11-20

申请号：US10435294

申请日：2003-05-09

Applicant: SMK Korea Co., LTD

Inventor： Gyu Chul Chun

IPC: H01H013/70

CPC classification number: H01H13/38 ,  H01H3/122

Abstract: A key switch able to provide a clicking sensation via a simplified structure is disclosed. The key switch includes a key to be pressed down, a linkage assembly having first and second linking members with arms connected to outer ends thereof, and a bow-shaped elastic object connected between the arms of the first and second linking members, which is lowered by pressure of the key and is raised together with the key by release of a pressure acting on the key, the first and second linking members including a coupling recess and a coupling protrusion at inner end thereof and hinge protrusions at side surfaces thereof, the coupling recess and protrusion being engaged with each other to constitute a linkage rotating shaft, a frame including hinge hooks engaged with the hinge protrusions of the first and second linking members, and an FPC placed on the frame to recognize a key-input operation by contact with the linkage assembly. As the key is pressed down, the arms of the first and second linking members are rotated downward while linkage rotating shaft is raised, and the elastic object is gradually flattened and then bent into an upwardly convex bow shape, thereby providing a clicking sensation to a user and a restoring force to the linkage assembly.

Abstract translation: 公开了一种能够通过简化结构提供咔哒声的钥匙开关。 钥匙开关包括被按压的键，具有连接到其外端的臂的第一和第二连接构件的连杆组件和连接在第一和第二连接构件的臂之间的弓形弹性物体， 通过钥匙的压力，通过释放作用在钥匙上的压力而与钥匙一起升起，第一和第二连接构件在其内端包括联接凹部和联接突起以及在其侧表面处的铰链突起，联接器 凹部和突起彼此接合以构成联动旋转轴;框架，包括与第一和第二连接构件的铰链突起接合的铰链钩;以及布置在框架上的FPC，以通过接触来识别钥匙输入操作 连杆组件。 当按键被按下时，第一和第二连接构件的臂向下旋转，同时联动旋转轴升高，并且弹性物体逐渐变平，然后弯曲成向上凸起的弓形状，从而为 使用者和对联动装置的恢复力。

公开(公告)号：US20030042123A1

公开(公告)日：2003-03-06

申请号：US10231775

申请日：2002-08-28

Applicant: SMK Korea Co., LTD

Inventor： Gyu Chul Chun

IPC: H01H013/70

CPC classification number: H01H3/125 ,  H01H2215/002 ,  H01H2215/034 ,  H01H2217/042 ,  H01H2221/068 ,  H01H2227/036 ,  H01H2231/042

Abstract: A key switch adapted to raise or lower a key top according to need is disclosed. The key switch includes a key top, a link assembly comprised of two link members and operatively connected to the key top, which is retracted by a pressure on the key top and extended by release of the pressure and which has an elastic member at its lower end, an FPC placed on a frame of a keyboard to recognize pressing of the key top, and a plate movably placed on the FPC, to which a lower end of one of the link members is connected, and which has an elastic supporting member being in contact with the elastic member of the link assembly. When the key top is pressed down, the link assembly is retracted while compressing the elastic member of the link assembly and the elastic supporting member of the plate. When the link assembly is further lowered, an elastic resistance of the elastic supporting member is suddenly increased, and thus the elastic member of the first link member is suddenly bent and quickly lowered, thereby affording a click sense to a user and enabling the bent portion of the elastic member to press the FPC.