Importance

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Abstract

A kind of improved structure of spring driving musical movement, which includes a set of musical base, a set of speed reducer and an upper cover principally. Putting two concave shape grooves which are on the musical movement base into a bilateral gear perpendicularly, then evoke parallel into the shaft ends of a step spur gear by the U shape groove on the base and the top frame of an inverse L shape shaft, then assemble a crown gear, a rotary shaft, then combine a worm with a speed reducer to form a set of speed reducer set commonly, and then, after put the lower shaft end of the worm of the speed reducer set into the locating hole of the lower shaft end of the worm of the musical movement base, cover the spring cover, will lead the upper shaft end of the worm of the speed reducer set into the locating hole of the worm of the spring cover, then rivet the spring cover with musical movement base; the worm of the speed reducer set will rotate and the S shape friction plate of the worm will rotate simultaneously by tight the spring to drive the musical movement making runner gear assemble, the two sides of S shape friction plate will open parallel by the centrifugal force to frictionize all of the interior side of the {character pullout} shape cylinder cover of the spring cover, it will get effect to reduce speed, balance windage and decrease noise, the playing speed of the musical movement will approach to stable, and the noise will be more improved.

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First Claim