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    • 8. 发明申请
    • Handpiece for dental or surgical use
    • 用于牙科或外科用途的手机
    • US20050181329A1
    • 2005-08-18
    • US11046705
    • 2005-02-01
    • Luc Maitre
    • Luc Maitre
    • A61B17/16A61C1/14B23B31/20
    • A61B17/162A61C1/144A61C1/147
    • At the front, the handpiece (1) has a clamp (10) fitted to tightly grip the shank of removable tool housed in the guide holes (23, 25). The clamp has two or more levers (26) attached to an annular section (22) of the clamp by elastic joints (27), each of which has a gripping jaw (20) to grip the tool shank. On each lever, the gripping jaw (20) is located much closer to the joint (27) than to a supporting surface, on which a tightening mechanism (17) exerts a centripetal force so that the lever multiplies this force. The tightening mechanism preferably has a sliding sleeve (40) having a conical inside surface (44), which produces said force at the levers of the clamp by means of balls (45) housed in the holes of the hollow rotatable shaft (11). Such an arrangement allows a weaker clamping spring (42) to be used, or even allows such a spring to be omitted. This allows some axial stresses on the ball bearings to be reduced.
    • 在前部,手持件(1)具有夹紧装置(10),以紧固地夹紧容纳在引导孔(23,25)中的可移除工具的柄部。 所述夹具具有两个或更多个杠杆(26),所述杆(26)通过弹性接头(27)附接到所述夹具的环形部分(22),每个所述杆具有夹紧所述工具柄的夹爪(20)。 在每个杠杆上,夹紧爪(20)位于比支撑表面更靠近接头(27)的位置,紧固机构(17)在该支撑表面上施加向心力,使得杠杆相乘。 紧固机构优选地具有具有锥形内表面(44)的滑动套筒(40),其通过容纳在中空可旋转轴(11)的孔中的滚珠(45)在夹具的杠杆处产生所述力。 这种布置允许使用较弱的夹紧弹簧(42),或者甚至允许省略这样的弹簧。 这允许减小球轴承上的一些轴向应力。
    • 9. 发明申请
    • Motor element, in particular medical handpiece with a collet chuck
    • 电机元件,特别是具有夹头卡盘的医疗手机
    • US20070114730A1
    • 2007-05-24
    • US11399280
    • 2006-04-06
    • Josef Duesing
    • Josef Duesing
    • B23B31/12
    • A61B17/162A61C1/147Y10T279/17461Y10T279/17521Y10T279/17529Y10T409/309464
    • In the case of a motor element, in particular of dental technical handpiece or a motor spindle, which at least in its front region has an elongated shank, rotatably mounted in which there is a hollow drive shaft, arranged in whose front end region there is a collet chuck for a tool that is connected in its rear end region by means of a coupling to a rod that extends towards the rear and is pretensioned towards the rear or towards the front by means of the force of a spring and can be displaced towards the front or towards the rear against the force of the spring by means of an actuating mechanism, with the spring being stayed on the draw rod towards the rear and being stayed against an inner first shoulder of the drive shaft towards the front, arranged at the front end region of the spring there is at least one supporting element that is elastically pretensioned radially outwards and springs out behind the shoulder when the draw rod is pushed with the spring from the front into the drive shaft, and the supporting element reaches a position located behind the shoulder.
    • 在电机元件的情况下,特别是牙齿技术手持件或电动机主轴,其至少在其前部区域中具有细长柄,可旋转地安装有中空驱动轴,其中前端区域 用于工具的夹头夹头,其通过借助于弹簧的力而朝向后部延伸并且通过弹簧的力向后或向前方预张紧的连杆连接在其后端区域中,并且可以朝向 通过致动机构抵抗弹簧的力的前部或后部,其中弹簧被保持在拉杆上并朝向后部并且被阻止在驱动轴的内部第一肩部朝向前部,该第一肩部布置在 弹簧的前端区域具有至少一个支撑元件,其在径向向外弹性预张紧并在肩部后弹出,当拉杆被弹簧从前部推入到驱动器 ve轴,支撑元件到达肩部后方的位置。