JPH058636Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field] The present invention relates to a variable volume music box.

[Prior art]

Conventionally, music boxes that produce sound mechanically without electrical amplification are housed in resonant containers and can only produce a moderately low volume, and the volume cannot be adjusted.

[Purpose of invention]

The object of the present invention is to propose a variable volume music box that can mechanically obtain a large volume using a volume amplification cone and that automatically changes the volume in relation to the music box.

[Structure of the idea]

The present invention consists of a music box, a volume amplifying cone shaped like a cone, with a screw attached to the apex and a large opening at the bottom, and an opening of the cone that slides vertically or horizontally relative to the opening. the sound volume amplifying cone is attached to the music box by screwing the screw into the screw hole for fixing the diaphragm of the music box, and is operated in conjunction with the rotation of the drum of the music box. The connecting mechanism automatically opens and closes the opening/closing member to automatically vary the sound volume from the cone.

〔Example〕

The present invention will be explained below with reference to illustrated embodiments. As shown in FIGS. 1 and 2, the variable volume music box has a frame 3 of a music box 2 fixed to the bottom of a presentation case 1. A volume amplifying cone 4 having a large bottom opening 4 around an opening 5 is fixed to the upper side of the cosmetic case 1. An opening/closing member 6 is attached to the upper side of the cosmetic case 1 so as to be slidable in the lateral direction so that the opening areas of the opening 7 of the presentation case 1 and the opening 5 of the volume amplification cone 4 can be changed. The volume amplifying cone 4 has a conical shape, and a screw 9 is attached to the apex 8 to be screwed into a screw hole for fixing the diaphragm 10 on the frame 3. The diaphragm 10 is further attached to the frame 3 with another screw 11.
is fixed. The diaphragm 10 is played by the pins of the drum 12 to make a sound.

As described above, when the volume amplifying cone 4 is attached to the fixing screw hole of the diaphragm 10 of the music box 2 by screwing the screw 9, the sound played by the music box 2 is amplified and expanded by the volume amplifying cone 4. Ru.

At this time, when the opening/closing member 6 is slid laterally to change the opening amount, the sound volume coming out from the opening is changed depending on the opening amount.

The opening/closing member 6 is configured to open/close by providing an interlocking mechanism (not shown) that operates in conjunction with the rotation of the drum 12 of the music box 2, so that the opening amount can be increased or decreased in accordance with the playing sound. . Furthermore, by opening and closing the music box 2 more finely than each sound unit, it is possible to add strength or weakness to the aftertaste of the sound or to generate vibrato.

FIG. 3 shows another embodiment in which an opening/closing member 6 is provided to be vertically movable with respect to the opening of the volume amplifying cone 4. As shown in FIG. In this embodiment, the other side 13 of the screw 9 attached to the apex 8 of the volume amplification cone 4 is extended toward the opening, and the opening/closing member 6 is fitted therein so as to be vertically movable.

In the above description, the drum 12 is rotationally driven by a full-length drive source, but it may also be driven by an electric motor.

[Effect of idea]

Since the present invention is configured as described above, the volume of the music box amplified by the volume amplification cone can be automatically adjusted with a simple configuration, and by devising a mechanism that interlocks with the rotation of the drum, the sound of the music box can be adjusted automatically. It is possible to provide a variable volume music box that has excellent practical effects, such as being able to add intensity to the afterglow of music and generate vibrato.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a cross-sectional side view of a variable volume music box, FIG. 2 is a perspective view of a main part of a variable volume music box, and FIG. 3 is a cross section of a main part of another embodiment. FIG. 2...Music box, 4...Volume amplification cone,
5...Opening part, 6...Opening/closing member, 8...Vertex part,
9...screw, 10...diaphragm.

Claims (1)

[Scope of utility model registration request] A music box, a cone for volume amplification having a conical shape with a screw attached to the apex and a large opening at the bottom, and an opening of the cone that is provided so as to be slidable vertically or horizontally with respect to the opening. an opening/closing member, the volume amplification cone is attached to the music box by screwing the screw into the screw hole for fixing the diaphragm of the music box, and the connecting mechanism operates in conjunction with the rotation of the drum of the music box. A variable volume music box in which the volume from the cone is automatically varied by automatically opening and closing the opening/closing member.