JPH05239Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a mainspring winding mechanism in devices that use a mainspring as a driving source, such as toys and timer devices.

(Conventional technology) In devices using a spring, the spring is
While holding the case with one end of the mainspring locked, the mainspring is wound by rotating the winding key connected to the other end. Normally, the winding key is rotated only in the winding direction of the mainspring, and the reverse rotation of the winding mainspring is restricted by a ratchet mechanism. The winding key, which has been rotated by a certain angle in the winding direction of the mainspring, is rotated again after changing hands. For example, when a doll toy is to be driven by a spring, the winding key is exposed to the outside.

(Problem to be solved by the invention) When the stored mainspring is released, the winding key exposed to the outside is rotated in the opposite direction to the winding direction. There are problems in that it causes great damage and also gets ropes and the like caught in it. There is also the problem that having to change your grip on the winding key when winding the mainspring makes the winding operation cumbersome.

(Means for Solving the Problems) This invention solves the above problems and provides a mainspring winding mechanism that allows the mainspring to be wound without the winding key rotating while the mainspring is being released and without having to change the grip. A reciprocating rotating body rotatably supported on a case body and reciprocatingly rotatable about a pivot axis; A winding ratchet that reciprocates with the moving object and a mainspring that locks one end and is rotatably supported on the pivot shaft, and when the winding ratchet rotates in the upward direction of the mainspring, the mainspring winds up. A mainspring locking body that is rotated in the same direction and allows only the mainspring winding ratchet to rotate when the mainspring winding ratchet rotates in the opposite direction to the mainspring winding direction; and a mainspring locking body that is substantially integrated with the mainspring locking body. the energy storage ratchet and the case body are substantially integral with each other;
When the mainspring locking body is rotated in the winding direction of the mainspring, the accumulating latch is allowed to rotate in the same direction, and when the mainspring locking body is rotating in the opposite direction to the winding up direction of the mainspring, the accumulating latch is allowed to rotate in the same direction. A storage ratchet receiver that stops the rotation of the ratchet;
The other end of the mainspring is locked, the mainspring has an output part that releases the force of the mainspring, and is connected to and disengages from a barrel rotatable about the pivot and a member that rotates in conjunction with the rotation of the barrel. It consists of a stopper that controls the rotation of the barrel.

(Function) When the reciprocating rotating body is rotated in the direction of winding up the mainspring, the winding ratchet integrated therewith rotates the mainspring locking body in the direction of winding up the mainspring, thereby winding up the mainspring. At this time, the barrel is stopped from rotating by a stopper. If the reciprocating rotating body is gripped and rotated in the opposite direction to the winding direction of the mainspring, the mainspring locking body will not rotate in the opposite direction because the accumulating latch engages with the accumulating latch receiver. When the reciprocating rotating body is rotated again in the direction of winding up the mainspring, the mainspring locking body rotates and winds up the mainspring. When the rotation stopping action on the barrel by the stopper is released, the barrel is rotated by the release force of the stored mainspring and drives the operating part via the output part. At this time, one end of the mainspring tries to rotate the mainspring locking body, but since the accumulating latch is engaged with the accumulating latch receiver, the locking body, that is, the reciprocating rotating body does not rotate.

(Example) Hereinafter, the present invention will be described in detail based on an example shown in the drawings. In the illustrated embodiment, the present invention is applied to a toy doll in which at least the head, upper body, lower body, and right arm are movable relative to each other.

In FIG. 1, reference numeral 1 indicates the upper half of the doll's outer shell, and reference numeral 2 indicates the lower half of the doll. The upper body 1 and the lower body 2 are relatively rotatably connected by a connecting body 3 fixed to the lower body 2. Step portions 3a are formed in the connecting body 3 with a phase of 180 degrees. On the other hand, the upper body 1 is formed with a rotation angle regulating part 1a (see FIG. 2), which engages with the stepped part 3a to control the relative rotation angle between the upper body 1 and the lower body 2 by approximately 180 degrees. It is regulated. The lower body 2 and the connecting body 3 constitute a reciprocating rotating body. Inside the upper body 1, a case body housing the main parts of the mainspring winding mechanism according to the present invention is fixed by means not shown. The case body includes a case body 4a and a case body 4b that are fitted together.
Both case bodies are integrated by fitting a plurality of fitting holes 4c and fitting pins 4d (see FIG. 2).

1 to 4, the square hole 3b formed in the connecting body 3 has a square shaft portion 5 of the winding ratchet 5.
a is fitted. The hoisting ratchet 5 has a pair of elastic engagement arms 5 extending in the same direction.
b, 5b are formed. The hoisting ratchet 5 also has a hole 5c into which one end 6a of the pivot shaft 6 is inserted.
and a recess 5d centered around this hole. The hoisting ratchet 5 has its engaging arm 5
b are located inside the case bodies 4a, 4b, and the square shaft portion 5a is located outside the case.

A mainspring locking body 7 is rotatably supported on the pivot shaft 6 with its rotation center hole 7a inserted therethrough.
The mainspring locking body 7 has its boss portion 7b connected to the recessed portion 5d.
It is loosely fitted. The mainspring locking body 7 is formed with non-return teeth 7c with which the engaging end 5e of the engaging arm 5b of the winding ratchet 5 engages and disengages (see FIG. 6).
When the winding ratchet 5 rotates in the winding direction of the mainspring, as shown by arrow a in FIG. 6, the check tooth 7c engages with the ratchet and is pushed in the same direction. In addition, the mainspring locking body 7 has
A spring locking portion 7d having a hollow portion 7g having a larger diameter than the rotation center hole 7a is formed at the base thereof.
A hexagonal square shaft portion 7e is formed. One end 8a of the mainspring 8 is inserted into the hollow part 7 in the mainspring locking part 7d.
A slit 7f is formed to fit into the circumferential gap between g and the pivot 6 and to lock the slit 7f.

The hexagonal shaft portion 7e has a square hole 9 that fits therein.
A power accumulating ratchet 9 having a diameter is integrally supported in the direction of rotation. In Savings Ratchet 9,
A pair of engaging arms 9b, 9b are formed that extend in opposite directions to the engaging arm 5b of the hoisting ratchet 5 (see FIG. 7).

As shown in FIG. 7, the accumulating latch 9 engages and disengages the engaging end 9c of its engaging arm 9b from the non-return tooth 10a of the accumulating latch receiver 10. The energy storage ratchet receiver 10 has rotation stops 10b, 10b formed protruding from its outer circumferential surface, which are connected to the case bodies 4a, 4b.
by engaging with the engaging portions 4e and 4f (see FIG. 1) of the
It is positioned and fixed integrally with the case body.

A rotation center hole 11a of a barrel barrel 11 is loosely fitted into the other end 6b of the pivot 6. The barrel 11 includes a mainspring storage section 11b that stores the mainspring 8, and a bottom part of this storage section, and a barrel bottom plate 11c made of an iron plate to prevent the storage section from being deformed in the circumferential direction due to expansion of the mainspring. It is made up of. The barrel bottom plate 11c has a claw portion 11f protruding from its periphery that is engaged with the end surface of the storage portion, and a hole 11j of the barrel bottom plate 11c is loosely fitted into the mainspring locking portion 7d. A window hole 11d for winding the mainspring 8 and a locking part 11e for locking the winding end 8b at the other end of the mainspring 8 are formed in a part of the peripheral wall of the mainspring storage part 11b. On the upper peripheral surface of the barrel 11, there is a No. 1 gear 11g that can be used as one of the output parts, and on the upper end surface there is an output pin 11h that can be used as another output part.
are formed respectively. The barrel 11 is configured such that the end face of the mainspring storage part 11b is opposed to the protrusions 4g and 4h formed on the case bodies 4a and 4b, and the lower end face of the boss part 11i is opposed to the upper end face of the mainspring locking part 7d. , axial movement is restricted.

In FIGS. 1 to 3, one end of a link 12 is pivotally connected to the output pin 11h. A pin 13a formed at one end of the crank 13 is engaged with the other end of the link 12. A square hole 13b is formed at the other end of the crank 13, and a square shaft portion 14a of the output shaft 14 is fitted into this square hole 13b. As shown in FIG. 1, the output shaft 14 has bearing parts 4i, 4 formed in the case body 4a.
It is rotatably supported by J and 4k. Output shaft 1
A slit 14c is formed at one end 14b of the flexible joint 15.
a are connected. Flexible joint 1
The other end 15b of the doll 5 is connected to a swinging shaft 16 (first
connected to one end (shown only in the figure). The other end of the swinging shaft 16 is connected to the head of a doll (not shown). In FIGS. 1 to 3, the small diameter tooth portion 17a of the second gear 17 meshes with the first gear 11g. The second gear 17 has both shaft ends inserted into the bearing recess 4 formed in the case body 4a.
1 and 4m, and a shaft holding part (not shown) of the case body 4b that forms a pair therewith, and is rotatably supported. The small diameter tooth portion 18a of the third gear 18 meshes with the large diameter tooth portion 17b of the second gear 17. The third gear 18 has both shaft ends formed in bearing recesses 4n and 4o formed in the case body 4a, and shaft holding parts 4p and 4q (shown only in FIG. 1) of the case body 4b that form a pair with these. It is rotatably supported. 3rd gear 1
The tooth portion 1 of the No. 4 gear 19 is attached to the large diameter tooth portion 18b of No. 8.
9a is engaged. The No. 4 gear 19 has both shaft ends located in bearing recesses 4r, 4 formed in the case body 4a.
s and a shaft holding part (not shown) of the case body 4b that forms a pair therewith, and is rotatably supported. 4
A worm gear 19b is formed on the number gear 19, and this gear 19b meshes with a worm 20a of a worm shaft 20. Worm shaft 20
is rotatably supported by inserting its one end 20b into a shaft hole 4t formed in the case body 4b and the other end 20c into a shaft hole 4u formed in the case body 4a. (see figure).
The gear train from the second gear 17 to the worm 20a constitutes a speed increasing gear train.

A disk-shaped rotating body receiver 21 is fixed to one end of the worm shaft 20, and a friction rotating body 2 made of an elastic material such as rubber is attached to a shaft portion 21a on one side of the disk-shaped rotating body receiver 21.
2 is press-fitted and fixed. The friction rotating body 22 has a pair of arm portions 22a, 22a extending in the circumferential direction, and when the worm shaft 20 rotates at high speed, the arm portions expand in the radial direction due to centrifugal force. It's summery. On the other surface of the rotating body receiver 21,
A pair of locking pieces 21b are formed that protrude in the axial direction. On the other hand, the case body 4a includes a friction rotating body 2.
A braking peripheral wall 4w surrounding the periphery of 2 is formed. When the arm portion 22a of the friction rotor 22 expands and rubs against the peripheral wall 4w, the rotation of the rotor, that is, the worm shaft 20, is braked.

1 and 2, the case body 4a is formed with a recess 4v into which a fixed end 23a of a stopper 23 made of a relatively thin leaf spring is press-fitted and supported. Locking end 23b of stopper 23
is movable in the axial direction of the worm shaft 20, and is located at a position where it can be engaged with and detached from the locking piece 21b. The pushing end 23c of the stopper 23 is pulled out from the case body 4a through a slit 4x (shown only in FIG. 2) formed in the case body 4a. A cam connected to, for example, the right arm of a doll (not shown) is brought into contact with the pushing end 23c.
The stopper 23 shown in FIG. 1 is placed at a position where the locking end 23b can engage with the locking piece 21b. In this case, the right arm of the doll is lowered along the side of the doll's body, and when the right arm is raised, a cam (not shown) rotates, pushes the stopper 23, and locks the locking end 23b into the locking piece. The worm shaft 20 is separated from the worm shaft 21b to allow rotation of the worm shaft 20.

The winding ratchet 5 and the mainspring locking body 7
The accumulating latch 9 and accumulating latch receiver 10 constitute a second one-way clutch. The rotational transmission directions of these one-way clutches are opposite to each other.

The operation of the embodiment configured as above will be explained. In FIG. 1, when the doll's upper body 1 is held and its lower body 2 is rotated in the upward winding direction of the mainspring (see arrow a in FIG. 6), the winding ratchet, which is substantially integrated with the connecting body 3, 5 rotates, and the spring locking body 7 is rotated in the same direction by its engaging arms 5b, 5b. At this time, it is assumed that the cam (not shown) on the right arm of the doll engages the stopper 23 with the locking piece 21b. When the mainspring locking body 7 rotates, the mainspring 8 having one end 8a locked thereto is wound tightly. When the mainspring locking body 7 rotates, the accumulating ratchet 9, which is substantially integral with the mainspring locking body 7, elastically deforms its engaging arms 9b, 9b, as shown by the arrow a in FIG. It is rotated while passing over the teeth 10a. That is, when the first one-way clutch transmits rotation in the winding direction of the mainspring, the second one-way clutch is rotated in a direction that does not transmit rotation. When the mainspring 8 is wound up, the barrel 11, which is locked at the other end 8b, tries to be rotated by the mainspring storing energy, but the first gear 11g
The speed-increasing gear train connected to the motor is locked by the stopper 23, so it cannot rotate. Therefore, the mainspring 8 is wound up by the relative rotation between the lower body 2 and the upper body 1 of the doll.

The relative rotation between the lower body 2 and the upper body 1 is limited to 180 degrees by engagement between the stepped portion 3a and the angle regulating portion 1a (see FIG. 2). Therefore, once the rotation of the lower body 2 is restricted, the lower body 2 can be rotated in the opposite direction without changing the grip.
Then, the hoisting ratchet 5 integrated with the lower body 2 is
While elastically deforming the engaging arms 5b, 5b, the sixth
In the figure, it is rotated in the direction opposite to arrow a.
At this time, the mainspring locking body 7 is caused by the accumulating force of the wound mainspring 8 to cause the engaging portion 9c of the accumulating latch 9, which is integrated with the mainspring locking body 7, to engage the accumulating latch 10.
By engaging with the non-return tooth 10a of
(See FIG. 7) and is prevented from rotating in the opposite direction.
That is, the mainspring locking body 7 is stopped at the position pushed around by the winding latch 5, more precisely at the position where the accumulating latch 9 and the accumulating latch receiver 10 are engaged. The mainspring 8 is held in the wound state by the engagement between the stock ratchet 9 and the stock ratchet receiver 10.

When the lower body 2, which has been rotated in the opposite direction to the direction of winding up the mainspring, is rotated again in the direction of winding up the mainspring, the sixth
As shown in the figure, the winding latch 5 rotates to push and move the spring locking body 7, thereby winding up the mainspring. Thereafter, the mainspring 8 is wound up by repeating the same operation.

The rotation angle of the doll's lower body 2 relative to its upper body 1 is
Although the angle is limited to 180 degrees, there is no particular need to rotate the lower body 2 until the stepped part 3a and the angle regulating part 1a collide with each other when winding the mainspring 8, and it is not necessary to rotate the lower body 2 while holding the lower body 2 and the upper body 1. Of course, it is also possible to make relatively small reciprocating rotations. In other words, it is not necessary to provide the stepped portion 3a and the angle regulating portion 1a, which limit the rotation angles of the upper and lower bodies. However, in a device in which it is desired to maintain a constant relative position between the portion housing the mainspring and the reciprocating rotating body, the presence of the stepped portion 3a and the angle regulating portion have meaning.

Now, in order to release the stored force of the mainspring 8 wound up as described above, the right arm (not shown) is raised to swing the stopper 23, and the locking end 23b is moved to the locking piece 21b of the rotating body receiver. Separate from. At this time, the stored force of the mainspring 8 is applied to the worm shaft 20 via the first gear 11g, the second gear 17, the third gear 18, and the fourth gear 19. Therefore, the worm shaft 20, which is no longer restricted by the stopper, is driven to rotate at a high speed via the speed increasing gear train. When the speed increasing gear train rotates, the No. 1 gear 11g located at the input end of the gear train
That is, the barrel 11 begins to rotate due to the stored force of the mainspring 8. When the worm shaft 20 rotates, the arm portion 22a of the friction rotary body 22 expands due to centrifugal force, and when the rotation of the shaft exceeds a predetermined speed, the arm portion 22a slides against the braking peripheral wall 4w, causing the shaft to rotate. applies a brake to the rotation of. When the rotational speed of the worm shaft 20 becomes equal to or less than a predetermined value, the arm portion separates from the peripheral wall. Arm part 22 below
By repeating sliding contact and separation from the peripheral wall 4w, the rotational speed of the worm shaft 20 is kept within a certain range.

The fact that the rotation speed of the worm shaft 20 is controlled by the speed control mechanism consisting of the speed increasing gear train, the friction rotor 22, etc. means that the rotation speed of the barrel 11 integrated with the No. 1 gear 11g is within a certain range. This means that it is maintained at When the barrel 11 rotates, the output pin 11h rotates eccentrically, causing the crank 13 to rotate via the link 12. The rotation of crank 13 is
A swinging shaft 16 (see FIG. 1) is rotated via an output shaft 14 and a flexible joint 15 to reciprocate the head of a doll (not shown) at a constant angle. If we look at this as the movement of a doll, it means that it is shaking its head from side to side at a constant speed. This swinging motion of the doll continues until the mainspring 8 is completely released or until the right arm (not shown) is lowered and the stopper 23 prevents the rotation of the worm shaft 20. When the barrel 11 is rotated, the one end 8a of the mainspring 8 is moved to the stopped position by the mainspring locking body 7, which is stopped by the engagement between the accumulating ratchet receiver 10 and the accumulating ratchet 9. is maintained. Therefore, the lower body 2, which serves as a reciprocating rotating body for winding up the mainspring 8, does not rotate even when the mainspring is released.

In the above explanation, the output pin 11h provided eccentrically with respect to the rotation center axis of the barrel was used as an output section for extracting the rotation of the barrel 11 to the outside, but it is also possible to use the No. 1 gear 11g as the output section. You can. In this case, the gear connected to the driven portion meshes with the No. 1 gear 11g.

In the illustrated embodiment, the lower body 2 and the connecting body 3
Although these are constructed as separate bodies, they may be integrally molded. Alternatively, the connecting body 3 and the winding ratchet 5
may be configured integrally. Further, the mainspring locking body 7 and the accumulating ratchet 9 may be formed integrally. In this case, the engaging arm 9b may be formed on the outer peripheral surface of the cylindrical portion forming the check tooth 7c. Also,
The case body 4 serves as the energy storage ratchet receiver 10.
Of course, they may be formed on the inner surfaces of a and 4b. Furthermore, the spring winding mechanism of the present invention can be applied not only to toys such as dolls but also as a mechanism for winding up springs of timers and the like.

(Effects of the invention) As described above, according to the invention, since the barrel is rotated by the wound mainspring, the member for winding the mainspring does not rotate when the mainspring is released. Furthermore, since the mainspring is wound up using a reciprocating rotating body, there is no need to regrip the hands and fingers when winding up the mainspring, and the mainspring can be wound up with a simple motion.

[Brief explanation of the drawing]

Figure 1 is a side sectional view showing an embodiment of the mainspring winding mechanism of the present invention, Figure 2 is a front sectional view of the same, Figure 3 is an exploded perspective view of the same, and Figure 4 is an exploded view of the main parts of the same. 5 is a perspective view showing the main part of an example of the reciprocating rotating body, FIG. 6 is a plan sectional view showing the positional relationship between the winding ratchet and the mainspring locking body, and FIG. FIG. 3 is a plan cross-sectional view showing the positional relationship with the energy storage ratchet receiver. 2, 3...Reciprocating rotating body, 4a, 4b...Case body, 5...Hoisting ratchet, 6...Pivot, 7...
Mainspring locking body, 8... Mainspring, 9... Accumulation ratchet, 10... Accumulation ratchet receiver, 11...
...Main barrel, 11g, 11h...Output section, 23...Stopper.

Claims (1)

[Scope of claim for utility model registration] Supported rotatably with respect to the case body,
a reciprocating rotating body capable of reciprocating rotation about a pivot; a winding ratchet that is substantially integral with the reciprocating rotating body and reciprocatingly rotates together with the reciprocating rotating body; It is rotatably supported on a pivot, and when the winding ratchet rotates in the winding direction of the mainspring, it is rotated in the same direction by the winding ratchet, and the ratchet winding the mainspring rotates in the direction of winding the mainspring. a mainspring locking body that allows only the ratchet to rotate when the mainspring locking body rotates in the opposite direction; a power storage ratchet that is substantially integral with the mainspring locking body; When the stopper is rotated in the direction of winding up the mainspring, the accumulating latch is allowed to rotate in the same direction, and when the stopper is rotating in the opposite direction to the direction of winding the mainspring, the accumulating latch is allowed to rotate. a barrel which is rotatable about the pivot axis, and which has an output section which is locked at the other end of the mainspring and releases the stored force of the mainspring; A mainspring winding mechanism comprising a stopper that controls the rotation stop of the barrel by engaging and disengaging from a member that rotates in conjunction with the member.