| 摘要 |
A gearing and drive mechanism is provided for a construction toy system, in which a coherent structure can be assembled from a series of rod-like struts (25, 26, 27, 28) and hub-like connectors (11), wherein the struts have specially contoured ends engageable by lateral, snap-in assembly with pairs of contoured gripping arms on the connector elements. Upon snap-in assembly, the struts are effectively rigidly joined with the connectors. Spur gears (71) and pinions (70) can be rotatably supported in the structure using struts and connector elements providing a gear train for converting the output of a motor (37) to the driving of an element of the construction toy system. The construction system has a graduated progression of strut lengths, such that a first length is of a size to form a base of an isosceles right triangle for which the next length of the progression is of a size to form a hypothenuse. Spur and pinion gears have a size ratio of approximately 2.4 at the pitch diameter to accommodate assembly, in structures of connected struts provided in such a size progression, of useful drive gear mechanisms of various speed ratios and mechanical advantages. |
