公开(公告)号：US4733408A

公开(公告)日：1988-03-22

申请号：US914234

申请日：1986-10-02

申请人： Georg Beikuefner ,  Arthur Gall ,  Adelbert Kupfer

发明人： Georg Beikuefner ,  Arthur Gall ,  Adelbert Kupfer

IPC分类号： H05G1/54 ,  H05G1/64

CPC分类号： H05G1/54 ,  H05G1/64

摘要： A switch mechanism for an image intensifier hood in an x-ray diagnostics system is connected to a motor for moving the x-ray image intensifier toward and away from an examination subject. If the hood inadvertently comes into contact with the examination subject or a technician, the hood is displaced thereby actuating the switch mechanism and disengaging the motor to stop movement of the x-ray image intensifier, thereby avoiding injury to the examination subject and technician and avoiding damage to the x-ray image intensifier. The switch mechanism is constructed such that actuation thereof occurs upon the presence of forces acting on the hood in the direction of the luminescent screen surface or a direction perpendicular thereto, and each intermediate direction. The hood is provided with a number of such switch mechanisms, each switch mechanism including a lever having one end for actuating an electronic switch, and an opposite end disposed at an obtuse angle with respect to the other end which presses against a beveled cam on the inside surface of the hood, which displaces the lever upon the occurrence of pressure against the hood. The hood and switch mechanisms are attached to the front of the x-ray image intensifier by a ring, and the lever for each switch mechanism is pivotably mounted for movement around an axis extending parallel to a tangent of this ring.

摘要翻译： 用于x射线诊断系统中的图像增强器罩的切换机构连接到用于使x射线图像增强器朝向和远离检查对象移动的马达。 如果发动机罩无意中与检查对象或技术人员接触，则发动机罩被移位，从而致动开关机构并使电动机脱离以停止X射线图像增强器的运动，从而避免对检查对象和技术人员的伤害并避免 损伤x射线图像增强器。 开关机构被构造成使得当在发光屏表面的方向或垂直于发光屏表面的方向和每个中间方向上存在作用在罩上的力时，启动它们。 罩设置有多个这样的开关机构，每个开关机构包括具有用于致动电子开关的一端的杠杆和相对于另一端以钝角设置的相对端，该另一端压靠在其上的斜面凸轮 在发动机罩的内表面中，当压力发生在罩子上时，该位置使杠杆移位。 罩和开关机构通过环连接到X射线图像增强器的前部，并且用于每个开关机构的杠杆可枢转地安装成围绕平行于该环的切线延伸的轴线移动。