US 9,842,575 B1Granted

Music box

OwnerChen-Hsiang Fenginventor

Life of this patent

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Abstract

A music box includes a box, an operation unit, multiple activation units and a comb member. A circuit board controls a coil in a desired one of the activation units to create a magnetic field with the magnetic plate so as to attract the activation plate to be matched with the match plate. The attached activation plate and the match plate are rotated by a shaft extending through the activation units. The shaft is driven by a driving member. Each activation plate includes fingers which push the keys of the comb member to generate sound.

Claims9

Dependent claims

A music box comprising:

a box having an electric power unit and a circuit board received therein, a driving member located on a top surface of the box;
an operation unit located on the top surface of the box and connected to the driving member, a first support and a second support respectively located on the top surface of the box, the operation unit connected to the first support that is located adjacent to the driving member;
multiple activation units located between the first and second supports and connected to the operation unit, each activation unit having a magnetic plate, a match plate, an activation plate and a spring, a shaft extending through the multiple activation units, two ends of the shaft connected to the first and second supports, the spring located between the between the match plate and the activation plate of each activation unit, a sequence of the magnetic plate, the match plate, the activation plate and the spring on the shaft of each activation unit being that the magnetic plate is located close to the driving member and the activation plate is located remote from the driving member, a coil electrically connected with the circuit board being located between the magnetic plate and the match plate of each activation unit, the match plate of each activation unit having multiple protrusions extending from a side thereof that faces the activation plate which has multiple holes which are located corresponding to the protrusions, the circuit board controlling the coil to generate electric power to magnetically attract the activation plate to match the match plate so as to engage the protrusions with the holes, the driving member drives the operation unit to spin the shaft which rotates the match plate and the activation plate that is matched with the match plate, and
a comb member located on the top surface of the box and having multiple keys extending therefrom, the keys located corresponding to the activation plates of the activation units, each activation plate having multiple lingers extending from an outer periphery thereof, the fingers pushing the keys to generate sound.

1 more element

Dependencies are inferred from the claim text.

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Abstract

A music box comprising:

a box having an electric power unit and a circuit board received therein, a driving member located on a top surface of the box;
an operation unit located on the top surface of the box and connected to the driving member, a first support and a second support respectively located on the top surface of the box, the operation unit connected to the first support that is located adjacent to the driving member;
multiple activation units located between the first and second supports and connected to the operation unit, each activation unit having a magnetic plate, a match plate, an activation plate and a spring, a shaft extending through the multiple activation units, two ends of the shaft connected to the first and second supports, the spring located between the between the match plate and the activation plate of each activation unit, a sequence of the magnetic plate, the match plate, the activation plate and the spring on the shaft of each activation unit being that the magnetic plate is located close to the driving member and the activation plate is located remote from the driving member, a coil electrically connected with the circuit board being located between the magnetic plate and the match plate of each activation unit, the match plate of each activation unit having multiple protrusions extending from a side thereof that faces the activation plate which has multiple holes which are located corresponding to the protrusions, the circuit board controlling the coil to generate electric power to magnetically attract the activation plate to match the match plate so as to engage the protrusions with the holes, the driving member drives the operation unit to spin the shaft which rotates the match plate and the activation plate that is matched with the match plate, and
a comb member located on the top surface of the box and having multiple keys extending therefrom, the keys located corresponding to the activation plates of the activation units, each activation plate having multiple lingers extending from an outer periphery thereof, the fingers pushing the keys to generate sound.

1 more element