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    • 4. 发明授权
    • Writing instrument
    • 书写工具
    • US06817802B2
    • 2004-11-16
    • US10464119
    • 2003-06-18
    • Ichiro NishitaniAkira MatsudaMasatoshi Yashima
    • Ichiro NishitaniAkira MatsudaMasatoshi Yashima
    • B43K518
    • B43K5/1845
    • A writing instrument adapted, responsive to a pressure axially applied to a pen core, to supply ink in an ink chamber to the pen core, and includes a valve seat disposed between the ink chamber and the pen core, a valve body operable to be selectively moved between a close position where the valve body is in contact with the valve seat to isolate the pen core from the ink chamber and an open position where the valve body is spaced apart from the valve seat to communicate the pen core with the ink chamber, a pressing spring for biasing the valve body toward the front end of a pen shaft, and a support member for supporting the valve body and the pressing spring to allow the valve body to be moved in the axial direction. The support member includes a communication channel for communicating the inner space thereof with the ink chamber. The valve body has a channel control portion for allowing the ink flow through the communication channel to be more restricted when the valve body is in the close position that when it is in the open position. The writing instrument can reduce the deposit of ink pigments around the valve body to prevent occurrence of defect in the operation of the valve body.
    • 一种书写工具,其适于响应于轴向施加到笔芯的压力,将墨室中的墨供应到笔芯,并且包括设置在墨室和笔芯之间的阀座,阀体可操作以选择性地 在阀体与阀座接触的关闭位置之间移动以将笔芯与墨水室隔离,以及阀体与阀座间隔开以将笔芯与墨水室连通的打开位置, 用于将阀体朝向笔轴的前端偏压的按压弹簧,以及用于支撑阀体和按压弹簧以使阀体沿轴向移动的支撑构件。 支撑构件包括用于使其内部空间与墨水室连通的连通通道。 阀体具有通道控制部分,用于当阀体处于处于打开位置的关闭位置时允许油墨流过连通通道更受限制。 书写工具可以减少油墨颜料在阀体周围的沉积,以防止阀体操作中出现缺陷。