Disc music box

Abstract

The present invention provides a disc-typed music-box apparatus, in which, a central shaft 170 and a vibration board 5 are arranged on a metal rack 9; a disc 3 that is provided with a plurality of projections 2 corresponding to the musical composition facilitates the rotation of a plurality of ratchet wheels 13 that is symmetrically arranged on a ratchet shaft 14 and then the vibration board 5 is played, thereby playing the musical composition. The device is provided with an arm 6, a roller 43, a thrusting mechanism, a plurality of separation parts 15, a frame body 16 and opening parts 17 a and 18a, which are arranged on the relative sides of the disc 3, and bearing parts 17, 18 on two ends 14 a, 14 b of the ratchet shaft 14; the bearing parts 17, 18 hold the frame body 16 to be molded with the rack.

Description

technical field [0001] The present invention relates to a disc-type music box device. The music box device uses a plurality of joints formed on the disc corresponding to the music to rotate a plurality of pawl wheels and pluck a vibrating valve to play the music. Background technique [0002] In the prior art, a number of joints such as holes or protrusions corresponding to the music are formed on the disk, and the disk is driven to rotate by a drive mechanism, and the above-mentioned joints are used to rotate several claw wheels and pluck the vibration valve to play the music. The disc music box device is known. In such a disc music box device, the pawl wheel is rotatably supported on the pawl shaft and is arranged facing the disc. Between the claw wheels, a spacer member is arranged to keep them at a constant interval, so that the assembly work is troublesome. In order to solve this problem, a disc-type music box device is disclosed in Japanese Utility Model Publication ...

AI Technical Summary

Problems solved by technology

On the other hand, if the pushing force is unstable, the engagement state between the claw wheel and the disc will be unstable, and the disc will rotate unevenly, impairing the sense of curvature, or increasing the load on the drive system.

When a motor is used as the drive source of the disk, the increase in load means that the power consumption increases, thereby shortening the operation period of the disk music box device.

[0008] In addition, since the arm is only rotatably supported on the shaft of the pillar, it cannot be stopped during the rotation of the arm, and it is not easy to attach and detach the disk.

During the rotation of the arm, when the operator's hand leaves the arm, the arm rotates due to its own weight, and may touch the frame or plate containing the music box device, causing damage to the arm, plate or frame

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