The invention provides a single-degree-of-freedom scissor-fork linkage type telescopic rib type folding and unfolding antenna mechanism which comprises P scissor-fork telescopic assemblies and a driving assembly, the scissor-fork telescopic assemblies are arranged on the outer side of the driving assembly in a circumferential array mode, and each scissor-fork telescopic assembly comprises a first scissor-fork arm, a second scissor-fork arm, a third scissor-fork arm and a fourth scissor-fork arm, the shear fork arms are connected through revolute pairs, the driving assembly comprises a driving motor, a speed reducer, a first bearing, a lifting seat, a lifting lead screw, a fixing seat, a second bearing, an end cover and a fixing support, the first end of the first shear fork arm is connected with the lifting seat of the driving assembly, and the first end of the second shear fork arm is connected with the fixing seat of the driving assembly. Reciprocating linear motion of the lifting seat on the lifting lead screw is converted into unfolding or folding of the shear fork telescopic assembly, then the unfolding caliber of the folding and unfolding antenna mechanism is controlled, and the folding and unfolding antenna mechanism has the advantages of being high in rigidity and folding rate, adjustable in caliber size and the like.
本发明提供一种单自由度剪叉联动型伸缩肋式折展天线机构,其包括P个剪叉伸缩组件和驱动组件,剪叉伸缩组件呈圆周阵列设置在驱动组件外侧,剪叉伸缩组件包括第一剪叉臂、第二剪叉臂、第三剪叉臂和第四剪叉臂,各剪叉臂间通过转动副连接,驱动组件包括驱动电机、减速器、第一轴承、升降座、升降丝杠、固定座、第二轴承、端盖和固定支架,第一剪叉臂的第一端与驱动组件的升降座连接,第二剪叉臂的第一端与驱动组件的固定座连接。本发明将升降丝杠上升降座的往复直线运动转化为剪叉伸缩组件的展开或收拢,进而控制折展天线机构的展开口径,具有高刚度、高收拢率、口径大小可调等优点。
Single-degree-of-freedom scissor linkage type telescopic rib type antenna folding and unfolding mechanism
单自由度剪叉联动型伸缩肋式折展天线机构
2022-08-16
Patent
Elektronische Ressource
Chinesisch
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