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    • 1. 发明授权
    • Dental hand-piece with an air turbine
    • 牙科手机与空气涡轮
    • US4188725A
    • 1980-02-19
    • US895742
    • 1978-04-13
    • Kenzo KataokaShoji Nakayama
    • Kenzo KataokaShoji Nakayama
    • A61C1/14A61C1/12
    • A61C1/141
    • A dental hand-piece with an air turbine wherein a collet chuck holding a cutting tool spindle, a clamping member enough to clamp tapered chuck pawls of the collet chuck convergently from the outside, and further a moving element allowed to do the fine movement toward the outside owing to the centrifugal force acting thereon during the rotation of a rotary body are all together incorporated into the turbine rotary body supported by a shaft bearing inside a head casing, and which hand-piece is so designed in such manner that the fine movement of the moving element can provoke the sliding movement tending to clamp the chuck pawls between the collet chuck and the clamping member, is disclosed. In this hand-piece, the chuck pawls are automatically clamped at the time when the turbine rotary body starts to rotate, and the holding force of the collet chuck becomes greater to perform the reliable and steady holding of the cutting tool spindle the more high-speedily the rotary body rotates.
    • 一种具有空气涡轮机的牙科手柄,其中夹持有切割工具主轴的夹头卡盘,夹紧构件足以夹紧夹头卡盘的锥形卡盘爪从外部收敛,并且还允许移动元件朝向 由于在旋转体的旋转期间作用在其上的离心力在外部都被并入到由头部壳体内的轴承支撑的涡轮旋转体中,并且哪个手持件被设计成使得微动 公开了移动元件可以引起倾向于将卡盘卡爪夹紧在夹头卡盘和夹紧构件之间的滑动运动。 在该手持件中,当涡轮旋转体开始旋转时卡盘爪被自动夹紧,并且夹头卡盘的保持力变大,以进行切削刀具主轴的可靠稳定的保持, 旋转体旋转快速。