JPS6010632Y2 - Music box toy winding device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a spring winding device for driving a music box toy, particularly a rotating drum.

The purpose of this invention is to allow the crank to wind up the spring accurately within a certain range, and when the spring is compressed to a certain range, the crank will idle and will not be able to wind the spring any further. It is an object of the present invention to provide a winding device for a music box toy that prevents the winding up of a music box toy.

It is well known that music box toys are constructed in such a way that the reversing force generated by the release of a wound spring rotates a rotating drum to play the orkol, and this rotational force is taken out to drive a merry-go-round or other objects. It is as follows.

However, in these conventional music box toys, special consideration has been given to the means for winding up the spring that is the driving source.
In most configurations, the crank and spring were directly connected, so if the crank was operated incorrectly, the spring would often break due to over-winding, or the spring would not be able to release the reversing force due to being too tightly wound. Another drawback was that when the crank was reversed, the crank would immediately come off the spring winding drum.

The purpose of the present invention is to eliminate these drawbacks, and by completing the invention described below, this purpose has been completely achieved.

Embodiments of the present invention will be described below with reference to the drawings.

Reference numeral 1 denotes a driving body attached to a music box main body (not shown) installed in a music box 2, and winds the winding drum 3 and unwinding drum 4 by passing a spring 5 therebetween.

Reference numeral 6 designates a deep dish-shaped spring receiver fixed to the winding drum 3, and there are fitting grooves 61.6 for the spring plate 7 at two opposing locations on the peripheral wall portion.
61 is cut out.

The spring plate 7 is formed by bending an elastic plate into a C-shape and further bending a portion thereof to protrude outward to form locking portions 71, 71. 71 engages with the fitting grooves 61, 61 of the spring receiver 6, and a portion thereof projects outward from the fitting groove.

8 is a crank handle that has a fitting hole 81 for the spring receiver 6 at its base end, and a blocking wall 82 in the normal rotation direction of the crank.
- Concave portions 83...83 having 82 are formed.

Since the present invention is constructed as described above, the spring 5 can be wound onto the winding drum 3 by fitting the fitting hole 81 of the crank handle 8 into the spring receiver 6 into which the spring plate 7 is fitted, and rotating the spring plate 7. As illustrated in FIG. 4, the locking portions 71, 71 of the spring plate 7 rotate while maintaining the state in which they are in contact with the blocking walls 82, 82 in the fitting hole 81, so this can be easily performed.

In particular, the present invention has a structure in which the spring receiver 6 and the spring plate 7 are formed separately, and the locking portions 71 and 71 of the Panu plate 7 are fitted and locked in the fitting hole 81 of the crank handle 8, so that the spring plate 7 is formed separately. When the winding of the spring 5 progresses and the unwinding resistance increases, the crank handle 8
Even if the spring plate 6 is rotated, the rotation of the spring plate 6 as it is hoisted up is prevented by resistance, and if the crank handle 8 is further rotated while this rotation is blocked, the locking portions 71, 71 of the spring plate 7 are rotated. Since it becomes recessed into the fittings 4961 and 61 of the spring receiver 6 and only the crank handle 8 is allowed to rotate idly, there is a risk that the drive mechanism 1 may break or the spring 5 may not be properly released due to overwinding. In addition to having an absolutely unique feature, the spring receiver 6 does not separate from the winding drum 3 even if the crank handle 8 is reversed.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention. Figure 1 is a front view of the music box box seen from the outside, Figure 2 is an exploded perspective view of the main parts, and Figure 3 is a crank handle in the same figure. An exploded perspective view showing only the parts reversed, Figure 4 is a front view showing the state of engagement with the crank handle when rotated in the normal direction, and Figure 5 is a front view showing the state where the spring plate and the spring holder are recessed inside. It is a diagram. 1... Drive body, 2... Music box, 3... Winding drum, 4...
... Rewinding drum, 5 ... Spring, 6
... Spring holder, 61 ... Fitting groove, 7.
... Spring plate, 71 ... Locking part, 8 ...
... Crank handle, 81 ... Fitting hole, 8
2...Bullet wall, 83...Recessed part.

Claims (1)

[Scope of utility model registration request] A spring receiver 6 is provided on the spring winding drum 3 of the music box main body, with spring plate fitting grooves 61, 61 cut out in the peripheral wall portion.
from the fitting grooves 61, 61 to the locking parts 71, 71.
The spring plate 7 is fitted and mounted so as to protrude, and the base end has a fitting hole 81 for the spring receiver 6, and the spring plate is engaged only when the crank handle is rotated in the forward direction. A winding device for a music box toy, in which a crank handle 8 is fitted with a crank handle 8 formed with blocking walls 82 .