JPH0341755Y2 - - Google Patents

Description

[Detailed explanation of the idea] This invention relates to the divided winding structure of Zenmai.

Some toys that use Zenmai, such as music boxes, wind up Zenmai using the pulling force of a drawstring. When trying to obtain a certain length of playing time in such a music box, if the winding length of the whole dance is increased, the winding torque of the whole dance can be reduced, but this has the disadvantage that the draw string becomes longer. If the tightening length of the Zenmai is made smaller, the drawstring can be made shorter, but the winding torque increases, making it difficult for young children to manage.

If the drawstring is long, the operability will be poor and there will be safety issues. That is, if the drawstring is long, when the drawstring is pulled to wind up the whole dance, the part of the string that is pulled out of the machine will be long, and there is a risk that the string will wrap around the infant's neck or the like.

Furthermore, in conventional music boxes, the drawstring, which was pulled out of the machine when the Zenmai winds up, is pulled into the machine as the Zenmai is released. In such a configuration, the drawstring is pulled back into the cabin by a relatively large full-length release force;
This may cause a safety problem in which the infant's fingers or clothing may become entangled.

Therefore, conventionally, by reducing the force when retracting the drawstring and shortening the drawstring,
We had no choice but to comply with toy safety standards. For this reason, the operating time of the full dance (the duration of the sound in the case of a music box) is short, which deteriorates the functionality of the toy. Further, in the case of a toy that requires a certain tone, such as a music box that is driven in full motion, the noise caused by the driving source becomes a major functional drawback.

An object of the present invention is to provide a fully divided winding structure that eliminates the above-mentioned safety and functional shortcomings.

This invention adopts a new structure of split winding method to shorten the length of the drawstring and eliminate the return of the drawstring due to the release force of the whole movement, thus meeting the safety standards and completely reducing the length of the drawstring. It is characterized by increasing the operating time of the dancer and suppressing noise generation as much as possible to improve its functionality.

Hereinafter, the present invention will be explained in detail based on the illustrated embodiments.

In FIGS. 1 to 3, reference numeral 1 indicates a substrate. For example, a well-known music box movement (not shown) is fixed to one surface of the substrate 1, and a winding shaft 2 of the entire movement projects from a hole 3 to the other surface 5. In this embodiment, the winding shaft 2 is rotated in the opposite direction to the winding direction when the full swing (not shown) is released. A square shaft portion 4 is fixed to the winding shaft 2. The surface 5 of the substrate 1 has a recess 6 centered around the hole 3, an arcuate spring guide 7 having a larger diameter than the recess and extending approximately half the circumference of the recess, and a spring engaging member. A stop pin 8 is formed respectively. A sawtooth gear 9 serving as a rotating body is rotatably attached to the square shaft portion 4 integrally with the hoisting shaft 2 by fitting a square hole 10 therein. The sawtooth gear 9 is formed with a flange portion 12 having a larger diameter than the sawtooth tooth portion 11 serving as an engaging portion. Tooth portion 11, flange portion 12, spring guide portion 7
and form an arc-shaped guide space 13 (third
(see figure). The case 14 is attached to the board 1 with the fixing screw 1.
5, 15... Therefore, the sawtooth gear 9 is housed between the substrate 1 and the case 14, and the annular protrusion 16 is in sliding contact with the inner surface of the case. Further, a case 17 is fixed to the case 14, and a music box movement (not shown) is housed inside this case.

One end 19 of a coil spring 18 serving as an elastic member is locked to the spring locking pin 8 . As clearly shown in FIG. 2, the coil spring 18 is telescopically wound around the outer periphery of the spring guide portion 7, and its other end 20 is locked to a knot 22 at one end of a drawstring 21. A claw member 24 serving as an engager is inserted between a knot 22 at one end of the drawstring 21 and a knot 23 at the other end. The pawl member 24 is formed with a pawl 25 that engages with and disengages from the tooth portion 11 of the sawtooth gear 9.

The drawstring 21 is wound around the teeth 11 of the sawtooth gear, and then pulled through a guide hole member 26 fitted into the case 14 and pulled out of the case. A gripping member 2 is attached to the drawer portion 27 of the drawstring 21.
8 is tied and fixed. Cases 14 and 17 are
It is stored in a box-like or bag-like container shaped like a person or animal. Therefore, the pull-out portion 27 of the drawstring 21 is pulled out of the container.

Inwardly of one end 29 of the spring guide section 7, as shown in FIG. 4, there is a stopper section 30 with which the knot ball 23 collides (see FIG. 6) during the full winding operation described later.
is formed. A tapered portion 31 is formed on the outer periphery of one end 29 of the spring guide portion 7, and is inclined toward the tooth portion 11 of the sawtooth gear as a means for separating the pawl member 24 from the tooth portion 11. (See Figure 4). In addition, case 1 of the stopper part 30
A string guide 32 for deflecting the drawstring 21 toward the case 14 is formed on the 4 side. Further, on the inner surface of the case 14, near the guide hole member 26, as shown in FIG. 5, a spring guide 33 is formed that guides the coil spring 18 by deflecting it toward the substrate 1.

When the drawstring 21 is not pulled, the coil spring 18 is in a position where the claw member 24 is spaced apart from the teeth 11 of the sawtooth gear 10, as shown in FIG. The tapered part 31
It has been contracted to a position where it abuts against the tooth portion 11 and disengages from the tooth portion 11. At this time, the drawstring 21 is wound around the outer periphery of the teeth of the sawtooth gear.

The operation of the present invention configured as above will be explained. As shown in FIG. 2, when no tensile force is applied to the drawstring 21, the drawstring 21
When pulled in the direction of the arrow, the pawl member 24 is pulled and moved clockwise, and the pawl portion 25 is brought into engagement with some of the teeth of the tooth portion 11 at a position away from the tapered portion 31.
After the pawl member 24 and the serrated gear 9 are engaged, the pull string 21 is further pulled, causing the serrated gear 9 to rotate clockwise. This rotation of the sawtooth gear 9 rotates the winding shaft 2 and winds up the entire winding (not shown).

As the drawstring 21 is pulled, the part of the string wound around the gear 9 is pulled out of the case, and the coil spring 18 is gradually stretched, so that the serrated gear 9 is pulled out as shown in FIG. It comes to wrap around the outer periphery of the toothed portion 11. When the drawstring 21 is pulled to a position where the knot 23 abuts against the stopper portion 30, the string can no longer be pulled. Therefore, when the tension on the drawstring 21 is released, this string 21 becomes
As shown in FIG.
It is wrapped around the outer circumference of the teeth. At this time, the claw member 24 is disengaged from the toothed portion 11 and returns to rotation, rides on the tapered portion 31, and is separated from the toothed portion 11. When the coil spring 18 expands or contracts, it crosses the drawstring 21, but the two are offset so as not to interfere with each other, as shown in FIG. Furthermore, even without any particular deviation, if the drawstring 21 and the coil spring 18 intersect as shown in FIG. 6, interference during expansion and contraction of the spring will be eliminated.

The above operation is performed by the sawtooth gear 9, that is, the hoisting shaft 2
(See Figure 1) The entire movement is simply raised by approximately one revolution. Therefore, by repeating the above operation a plurality of times, sufficient winding of the entire length (not shown) is completed.

In other words, the entire winding is performed by pulling the drawstring multiple times. Although the above-described operation can be repeated, there is no particular need to return the pawl member 24 to the position shown in FIG. Of course, the drawstring 21 may be pulled taut before the member 24 returns to the position shown in FIG.

Then, after the winding of the whole dance is completed, the drawstring 21
When the tension is released, the pull string is wound around the outer circumference of the gear by the elasticity of the coil spring 18, as shown in FIG.
and is separated from the tooth portion 11. The force when the drawstring 21 is wound up is the accumulated force of the coil spring 18, which is much smaller than the full release force, so this is extremely beneficial in terms of safety.

Furthermore, since it is a split winding method, even with a short drawstring, the overall winding torque can be reduced and the length of the winding can be increased. This can lengthen the operating time of the entire dance, that is, the playing time of the music box.

In the embodiment described above, the spring guide section 7, the coil spring 18, the tapered section 31 as a claw removal guide, and the stopper section 30 (see Fig. 4) are provided on the substrate 1, but depending on the shape of the product, It may also be provided in the case 14.

Next, referring to FIG. 7, another embodiment of the present invention will be described. A drawstring 121 is wound around the outer periphery of the sawtooth gear 9, and one end of a coil spring 118 is locked to a knot 125 at one end of the drawstring 121. The other end of the coil spring 118 is locked to the spring stop pin 108. A claw member 124 positioned by a pair of knot balls 122 and 123 is inserted through the drawstring 121. The example shown in FIG.
This is a state in which the coil spring 118 is slightly stretched by slightly pulling 1, and immediately after the claw member 124 is engaged with the tooth portion 11. Therefore, the drawstring 12
1, the claw member 124 moves to a position where it is disengaged from the toothed portion 11 due to the elasticity of the coil spring.

When the drawstring 121 is pulled in the direction indicated by the arrow, the serrated gear 9 rotates and the entire length (not shown) is wound up, as in the previous embodiment, but in this example, the coil spring 118 is connected to the serrated gear. It differs from the previous embodiment in that it is not wrapped around the outer periphery of the tube. That is, the string is extended from the knot 122 to the knot 125 so that the coil spring 118 does not engage the toothed portion 11 even when the draw string 121 is stretched to the maximum length. In this way, the coil spring 118 is connected to the sawtooth gear 9.
If you do not wrap the coil spring 118
No noise is generated between the teeth and the teeth 11. As shown in FIG. 6, when the coil spring 18 wound around the outer periphery of the serrated gear 9 returns to its original position by releasing the tensile force of the drawstring 21, a drying noise is generated due to the sliding of the teeth 11. do. This drying noise itself is not unpleasant since you can actually feel the winding motion of the drawstring 21 returning into the case, but if you want to eliminate it, the example shown in Fig. 7 is You can configure it like this. And the sound that occurs when winding up the Zenmai is not a big problem,
A problem is the noise caused by the drive system when the wound winding is released, ie when the toy is driven while a music box is being played, for example.
On the other hand, according to the present invention, which directly rotates the rotating body 9 that is integrated with the hoisting shaft of the entire drive, no gear train is provided in the output system of the driving force, and no unpleasant noise is generated during output. Note that when adopting such a configuration, the structure does not need to be bulky if the coil spring 118 is not stretched linearly but guided by a guide member that is appropriately bent within a case (not shown).

Next, another example of the engager will be explained based on FIG. 8. This example is unique in that the claws protrude when the string is pulled, and retract when the string is released. This engager consists of a pawl body 40 and a pawl support 46. The claw body 40 includes a claw portion 41, a hole 48 into which the shaft 42 is press-fitted, a hole 43 into which one end of the drawstring 45 is fixed,
It consists of a protrusion 44 for swinging the main body when the drawstring is pulled. After the claw body 40 is fitted into the recess of the claw support 46, the shaft 42 is inserted into the shaft hole 47.
By press-fitting it through the hole 48, it is swingably attached to the claw support. Claw support 4
One end of a coil spring 49 is locked to 6 . Although not shown, the claw body 40 and the claw support 46 have a rocking habit that allows the claw body 40 to retract the claw portion 41 into the claw support 46. A spring is provided. These claw supports 46 and springs connect the claw portion 41 to the engaging portion 11.
Means is provided for spacing the object from the object.

Then, when the drawstring 45 is pulled in the direction of the arrow,
The claw body 40 is swung in a direction in which the claw portion 41 is projected by pushing the convex portion 44 with a string. Of course, the protruding claw portion 41 is meshed with the sawtooth gear. When the tension of the drawstring 45 is released, the claw body 40 will pull the claw part 4 due to its habit.
1 into the claw support 46. When the outer periphery of the serrated gear (not shown) is returned to its original position by the stored force of the coil spring 49, the sliding edges 50, 50 of the pawl support 46 slide on the outer periphery of the gear. When such an engager is used, when the drawstring is not pulled, the claw portion 41 is not engaged with the teeth of the sawtooth gear as a rotating body, so the tapered portion 31 (the third one) serves as a claw removal guide. (see Figure 2) is not necessary. In other words, it is not necessary to strictly control the position of the engaging element that returns to the initial position after releasing the pulling force on the drawstring. In addition, in order to eliminate the noise of the coil spring and the teeth of the sawtooth gear, a string is interposed between the coil spring 49 and the pawl support 46.

In the embodiments described above, a sawtooth gear is used as the rotating body and a pawl member is used as the engager. A rotating mechanism that winds up the whole ball may be constructed by combining the two using the engaging protrusions.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention;
Figure 2 is a cutaway front view of the same part, Figure 3 is a sectional view of the same part,
Figure 4 is a front view of the same main part, Figure 5 is a sectional view of the same main part,
FIG. 6 is an operational view of the same, FIG. 7 is a configuration diagram showing only the essential parts of another embodiment of the present invention, and FIG. 8 is an exploded perspective view showing another example of the engager. 2...Hoisting shaft, 9...Sawtooth gear, 18,118
...Coil spring, 21,121 ...Draw string, 24
...Claw member, 30...Stopper part, 31...Tapered part.

Claims (1)

[Claims for Utility Model Registration] Zenmai, a rotating body that is substantially integral with the winding shaft of the Zenmai and has an engaging part, and the above-mentioned claim only in the Zenmai winding direction with respect to the rotating body. an engaging element that engages with the engaging part; one end connected to the engaging element is wound around the rotating body, and the other end is pulled out of the machine;
a drawstring which, when pulled, engages the engaging element with the engaging portion of the rotary body and rotates the rotary body in the fully winding upward direction; an elastic member that is biased in a direction opposite to that of the drawstring and winds the drawstring back around the rotating body when the tensile force on the drawstring is released; and means for separating the engaging element from the engaging part when the engaging element is moved away from the engaging part.