| 摘要 |
A multiple position support structure is disclosed. The support structure comprising a base, a planar member configured for supporting a patient, a linking assembly connecting the planar member with the base, and an actuator assembly operably connected to the linking assembly and the base for moving the planar member from a first position to a second position. The linking assembly includes a first pair of connecting arms and second pair of connecting arms, each arm being bent at a fulcrum point. The actuator assembly includes a driver means, a screw actuator rotatably connected to the driver means, a driver nut mounted about the screw actuator, and a pull arm pivotably mounted to the driver nut. Rotation of the screw actuator causes linear movement of the driver nut and results the pull arm applying a pulling force to the linking assembly. Extension of the linking assembly causes vertical movement of the planar member.
|
