JPH0643839Y2 - The whole hoisting mechanism of the music box - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a music box full-winding mechanism in which a center gear is interposed between the full-motion axis of the music box and the full-winding axis.

[Prior art]

In the conventional rotary doll with a music box built in, the actual number is 59-178
As in the 691 publication, the music box is housed downward in the pedestal box, the winding axis of the whole dance is placed at the center of the pedestal box, and the total dance axis of the music box is eccentric, so A total dance hoisting mechanism of a music box has been proposed in which a gear is interposed between the winding shafts and a base plate of a doll or the like is screwed onto the winding shaft. When the winding keys are screwed and coupled with each other, the respective screwing coupling portions are bitten when the whole dance is wound, and when the winding key is rotated in the direction opposite to the removal direction, that is, the winding direction of the full dance,
When the biting force of the hoisting shaft and the key is stronger than the biting force of all the shafts and gears, the gears fall off from all the shafts and the winding key cannot be removed. There is a drawback that the bottom plate and the holding plate of the above are pushed and destroyed. In order to eliminate this drawback, a structure in which all the shafts and gears are press-fitted together or a structure in which square shafts and square holes are connected is also adopted, but square shafts and square holes are complicated to produce and costly. When the key is removed, it will exert harmful force on the music box. In the assembly process, it is more convenient to provide a screw on all the shafts. Also, as shown in Fig. 5, there is a proposal that the gear 27 is screwed onto the whole shaft 26, and the double nut 28 is used to prevent the gear 27 from slipping off, and then the tip of the whole shaft is caulked to the surroundings. As the number of machining steps increases, the total axis of rotation becomes long, and the jigs in the assembly process must be changed.

[Purpose of device]

In consideration of the above-mentioned drawbacks, the present invention prevents the gear from falling off from the whole shaft when the winding key is removed from the winding shaft even if the biting force of the winding shaft and the winding key is stronger than the biting force of the whole shaft and gear. In addition, it is to propose a mechanism for hoisting all the music boxes so that no harmful force is applied to the music boxes.

[Constitution of device]

The present invention is a winding key screwed to a winding shaft of a music box,
A total dance hoisting mechanism of a music box having a first gear that integrally rotates with the entire dance shaft of the music box, a second gear that integrally rotates with the hoisting shaft, and an intermediate gear provided between both gears,
All the dance shafts and the first gear are screwed together, and the intermediate gear is made movable in the rotation direction of the second gear, and the intermediate gear meshes with the first and second gears by the rotation of the full dance shaft in the winding direction, The rotation of the intermediate gear meshes with the second gear by rotation in the opposite direction, and the rotation of the intermediate gear is locked by the rotation restricting portion provided in the moving region of the intermediate gear that is disengaged from the first gear.

〔Example〕

Hereinafter, the present invention will be described with reference to an illustrated embodiment. The entire winding mechanism of the music box is a mounting plate 2 formed in a disk shape from a synthetic resin material or the like as the bottom plate of the revolving doll 1 in FIGS. 1 to 3.
The winding shaft 3 is rotatably supported at the center of the box, and the music box 4 is fixed on the mounting plate 2 so that the entire music box shaft 5
The first gear wheel 7 is screwed and coupled to the threaded portion 6 formed on the winding shaft 6 so as to rotate integrally therewith, and the second gear wheel 8 is provided so as to rotate integrally with the winding shaft 3. An intermediate gear 9 is provided between the two gears 7 and 8 in the rotational direction of the second gear 8 to attach the mounting plate 2 and the holding plate 10.
The long groove 11 and the long hole 12 respectively formed in the first and second holes 8 and 12 are movably provided so that the shaft can move in a planetary manner. Is pressed and urged.

The first gear 7, the second gear 8, the intermediate gear 9, and the stop gear 14 are accommodated in a jetty-shaped accommodating portion 15 formed in the mounting plate 2 so that the axial hole and the long hole 12 of the pressing plate 10 are accommodated. The second gear 8, the intermediate gear 9, and the stop gear 14 are supported by bearings and prevented from coming off.

The stop gear 14 has a tooth profile 16 formed on the inner peripheral wall of the accommodating portion 15.
It is meshed with and locked against rotation. The holding plate 10 is the accommodating portion 15
It is positioned by pin 17 on the edge of the. A screw rod fixed to a winding key 19 that doubles as a stand on the screw portion 18 on the lower side of the winding shaft 3.
20 are screwed together.

As shown in FIG. 4, the music box 4 has a frame 22 fixed on the mounting plate 2 with screws 21 and a barrel 23 fixed on the frame 22.
The entire dance inside is wound up on the above-mentioned full dance shaft 5, the drum 24 is rotated by this complete dance drive source, and the pin of the drum plays the diaphragm 25 to play the music box.

The positional relationship between the intermediate gear 9 and the stop gear 14 is such that when the intermediate gear 9 tries to separate from the first gear 7 or the stop gear 14, it slightly meshes with the other gear before completely separating from one. Gear 9 and stop gear 14 are installed,
When engaging the intermediate gear 9 and the stop gear 14, the spring 13
It will not be returned in.

The weak torsion coil spring 13 may be omitted, and when it is not present, the first gear 7 and the stop gear 14 are switched so that the intermediate gear 9 does not mesh with both the first gear 7 and the stop gear 14 and the meshing is switched. It is preferable to separate the position of and to avoid the trouble of stopping by biting with both.

When the winding coil 19 is wound up, when the winding coil 19 is wound up, the second gear 8 is rotated in the A direction and the intermediate gear 9 is attached in the C direction as shown in FIG. Since it is energized, the first gear 7 is rotated counterclockwise, the whole dance is wound up by the whole dance shaft 5, the music box 4 is sounded, and the rotary plate is rotated by the mounting plate 2 against the winding key 19 of the stand. 1 is rotated. When the second gear 8 is reversely rotated in the B direction by the winding key 19, the intermediate gear 9 is moved in the D direction against the weak torsion coil spring 13 and meshed with the stop gear 14.
Since the rotation of the intermediate gear 9 and the second gear 8 is stopped, the winding key
When 19 is further rotated in the B direction, the threaded portion 16 of the winding shaft 3 and the screw rod 20 are unscrewed, and the winding key 19 can be removed.

At this time, even if the biting force between the hoisting shaft 3 and the screw rod 20 is strong, the force for unscrewing the two is not transmitted to the whole dance shaft 5, so no harmful force is applied to the music box.

The stop gear 14 is omitted and the intermediate gear 9 is directly accommodated in the accommodating portion.
It may be configured to engage with the tooth profile 16 of the inner peripheral wall of 15.

If the above-mentioned weak torsion coil spring 13 is not provided, use the winding key 19
When the gear 8 is rotated in the A direction, the intermediate gear 9 is moved to the first gear 7 side and meshed with each other, the whole dance is wound up, the music box is sounded, and the rotary doll 1 is rotated.

In this case, after winding the whole dance, the winding key 19 is turned, or the rotary doll 1 is turned in advance to rotate the second gear 8 in the B direction, and the intermediate gear 9 is engaged with the stop gear 14 to move the second gear 8. When the rotation of the gear 8 is stopped and the engaged state is maintained, the music box sounds, but the rotating doll 1 can be kept in a non-rotating state.

In the above description, the music box 4 is built in the revolving doll 1 and the revolving doll is rotated together with the sounding of the music box.

[Effect of device]

Since the present invention is configured as described above, it is possible to use a normal mass-produced music box having a threaded portion on all the dance axes of the music box, which can reduce the cost, and when removing the winding key etc. Since the gear that is screwed into the gear does not come off, the resin bottom plate is not broken by the gear, and the force to remove the winding key is not transmitted to the whole dance axis, so no harmful force is applied to the music box. It is possible to provide a whole-winding mechanism for a music box that plays.

[Brief description of drawings]

An embodiment of the present invention is shown in the drawings, FIG. 1 is a plan view of a hoisting mechanism, FIG. 2 is a sectional side view taken along line II-II of FIG.
Figure is an external view of a rotating doll, Figure 4 is a plan view of a music box,
FIG. 5 is a sectional side view in which a gear and a double nut are screwed and fixed to a conventional full shaft. 3 ... Winding shaft, 4 ... Music box, 5 ... Whole shaft, 6 ... Screw part, 7 ... First gear, 8 ... Second gear, 9 ... Intermediate gear.

Claims (1)

[Scope of utility model registration request] 1. A winding key screwed onto a winding shaft of a music box, and a first gear which rotates integrally with the entire dance shaft of the music box.
In a complete dance hoisting mechanism of a music box having a second gear that rotates integrally with the hoisting shaft and an intermediate gear provided between the two gears, the entire dance shaft and the first gear are screwed together to form the intermediate gear. The second gear is movable in the rotation direction, the middle gear meshes with the first and second gears by the rotation of the full shaft, and the middle gear meshes with the second gear by the opposite rotation. All-round winding mechanism of the music box in which the rotation of the center gear is locked by the rotation restricting portion provided in the moving area of the center gear, which is separated from the gear.