JPH0184698U

JPH0184698U -

Info

Publication number: JPH0184698U
Application number: JP1987179665U
Authority: JP
Priority date: 1987-11-27
Filing date: 1987-11-27
Publication date: 1989-06-06

Description

[Brief explanation of the drawing]

第１図は、本考案による模型ヘリコプタにおけ
るメインロータ駆動装置の一実施例を示す正面図
、第２図は、第１図の―線に沿うその駆動装
置の縦断面図、第３図は、本考案によるメインロ
ータ駆動装置の他の実施例を概略的に示す概略説
明図、第４図は、従来の模型ヘリコプタにおける
駆動装置を示す、第２図と同様の縦断面図である
。１……フレーム本体（フレーム）、２……エン
ジン、２ｂ……シリンダ、２ｇ……クランクシヤ
フト、３……補助フレーム（フレーム）、４……
クラツチ、５……ドライブピニオンギヤ、６……
メインロータ、７……マスト、８……ロータドラ
イブギヤ、８ａ……内歯。 FIG. 1 is a front view showing an embodiment of the main rotor drive device in a model helicopter according to the present invention, FIG. 2 is a longitudinal cross-sectional view of the drive device taken along line - in FIG. 1, and FIG. FIG. 4, a schematic explanatory diagram schematically showing another embodiment of the main rotor drive device according to the present invention, is a longitudinal sectional view similar to FIG. 2, showing a drive device in a conventional model helicopter. 1... Frame body (frame), 2... Engine, 2b... Cylinder, 2g... Crankshaft, 3... Auxiliary frame (frame), 4...
Clutch, 5... Drive pinion gear, 6...
Main rotor, 7...mast, 8...rotor drive gear, 8a...internal teeth.

Claims

[Claims for Utility Model Registration] (1) An engine supported on a frame with the axis of the cylinder in the longitudinal direction of the aircraft and with the crankshaft extending downward, and the drive side being the lower end of the crankshaft. a clutch connected to the engine and having a drive pinion gear on the driven side, a main rotor attached to the upper end and a rotor drive gear attached to the lower end, arranged substantially parallel to the crankshaft at the rear of the engine and rotating to the frame A driving device for a main rotor in a model helicopter, comprising: a mast that is vertically supported, and wherein the drive pinion gear and the rotor drive gear are meshed and connected so that they rotate in the same direction. (2) The main rotor drive device for a model helicopter according to claim 1, wherein the rotor drive gear has internal teeth that mesh with the drive pinion gear.