PITCH CONTROL APPARATUS FOR TAIL BLADE OF MODEL HELICOPTER

摘要

The present invention relates to a tail blade pitch control device of a model helicopter, the present invention is provided with two pitch link joints (71, 72), the tail shaft (11) to be able to slide in the direction of the tail axis (11) A swash bush (70) inserted into and mounted integrally with the tail shaft (11); Two pitch links 81 and 82 each of which is connected to two tail blades and the other end of which is connected to the pitch link joint portions 71 and 72; A swash (60) rotatably inserted into an outer circumference of the swash bush (70); An upper flow lever 51 and a lower flow lever 53 are integrally connected by two flow lever connecting rods 55, and a flow lever 50 having one side connected to the swash 60; A ring-shaped control lever hinge ring 16 and a support lever hinge ring 17 fixed to the tail body 90 inside the tail shaft housing 15; A support lever 40 connected to the support lever hinge ring 17 and supported by the flow lever 50; The first control link connecting portion 21, the second control link connecting portion 23 and the control lever extension 25 has a T-shape, and the control lever 20 is connected to the lower portion of the control lever hinge ring 16 Wow; One end is connected to the control lever extension 25, the other end is composed of a connection link 30 is connected to the flow lever (50).