JPH0615645Y2 - Yo toy - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a yo-yo toy.

[Prior Art] Conventionally, in a yo-yo toy, as shown in FIGS. 7 to 9, a concave portion 52 is formed on the outer side surface of a pair of yo-yo bodies 50 and 51.
Is formed, and a pair of clutch members 54 urged by a spring 53 are arranged opposite to each other in the recess 52.

On the other hand, a pulley 58 is supported on the shaft 56, and as shown in FIG. 8, threaded portions 57 having steps 56a are formed on both ends thereof. One of the yo-yo bodies 50 is fixed to one end portion (screw portion 57) of the shaft 56, and the other end portion (screw portion 57) is connected to the yo-yo body 51.
Is removably screwed to the screw portion 60 fixed to the central portion of the. In this way, the yo-yo bodies 50 and 51 are fixed to both ends of the shaft 56 via the predetermined gap 59.

A string (not shown) is attached to the pulley 58, and the pulley 58 is clutched by the press contact portion 58a being pressed by the clutch members 54 and 55 which are biased by the spring 53 toward the shaft 56. .

With such a configuration, when the yo-yo bodies 50 and 51 are not rotating, the pulley 58 is clutched by the clutch members 54 and 55, so that the string fixed on the pulley 58 is wound and stretched. Yo-yo body 50,
51 rotates and moves in a predetermined direction. Yo-yo body 5
When the rotations of 0 and 51 increase, the clutch of the pulley 58 is released by the centrifugal force, and the yo-yo bodies 50 and 51 are configured to idle.

[Problems to be Solved by the Invention] As described above, in order to position the pair of yo-yo bodies 50 and 51 so as to form the predetermined gap 59, as shown in FIG. The step 56a is provided,
When the threaded portion 57 of the shaft 56 and the threaded portion 60 of the yo-yo main body 51 are screwed together, the screwing is stopped at the step 56a to maintain a predetermined gap 59.

The shaft 56 having such a structure having the step 56a is a custom-made product, which causes a cost increase.

In addition, in order to fix the screw portion 60 to the yo-yo body 51, when molding the yo-yo body 51, the screw portion 60 is put in a mold and synthetic resin is injected around the screw portion 60 to finish one and the second one. As in the case of the first piece, a new screw part 60 is placed in the mold, and synthetic resin is injected into the periphery of the mold to finish it.
It was very time-consuming and costly.

Further, since the pulley 58 and the clutch members 54 and 55 are formed of hard members, the press contact portion 58a of the pulley 58 and the clutch members 54 and 55 are rubbed against each other when the yo-yo bodies 50 and 51 run idle. The noise was a big problem.

[Means for Solving the Problems] Opening portions into which both ends of the pulleys are fitted are provided so as to face the center portions of the inner side surfaces of the pair of yo-yo bodies, and a central shaft hole for a central shaft hole that communicates with the opening parts. To form a partition wall,
A pipe for positioning the gap by contacting both ends with the partition wall is inserted between the center shaft and the pulley to facilitate positioning of the gap between the pair of yo-yo bodies and to reduce the cost. is doing.

Further, the press-contact portion of the pulley with which the clutch material is press-contacted is surrounded by a cylindrical body formed of an elastic soft member having a large frictional resistance to reduce noise when the yo-yo body idles.

A step is provided on the inner wall of the recess that accommodates the spring-biased clutch material, and the wall surface from the edge of the recess to the step increases in diameter from the edge of the recess toward the step. (EN) A yo-yo toy having a wide variety of interests is provided by forming a reverse taper shape and press-fitting a lid that covers a concave portion so that the lid can be opened and closed to reduce the manufacturing cost and replace the clutch mechanism.

Also, a bolt is used for the central shaft, and a nut hole into which a nut screwed with the bolt is fitted is formed on one side of the yo-yo body,
The pair of yo-yo bodies are detachably fixed by bolts and nuts, thereby reducing the manufacturing cost.

[Operation] The pipe 35 is inserted between the central shaft 10 and the pulley 8, and both ends thereof are openings provided so as to face the center portions of the inner side surfaces of the pair of yo-yo bodies 1 and 2, respectively. The one end of the clutch member 16 is rotatably attached to the protrusion 17 in a state where it is in contact with the partition walls 12 and 38 for forming the central shaft hole 13 that communicates therewith with the gap 36. Since the weight 19 is mounted on the tip end portion while being supported, the centrifugal force acting on the clutch member 16 becomes large when the rotational speeds of the yo-yo bodies 1 and 2 are large. Is the protrusion 1 against the bias of the spring body 22.
The tip portion rotates in the circumferential direction of the yo-yo bodies 1 and 2 with 7 as a fulcrum.

Then, the press contact portion 8a of the pulley 8 separates from the braking portion 24,
The clutch of the pulley 8 is released, and the yo-yo bodies 1 and 2 idle. During this period, since the string 34 is not wound around the pulley 8, the yo-yo bodies 1 and 2 are not stretched by the string 34, and the string 34 is in an expanded state.
Only the yo-yo bodies 1 and 2 run idle on the floor. At this time, since the press contact portion 8a of the pulley 8 is surrounded by the cylindrical body 33 formed of an elastic soft member, the pulley 8
Since the pressure contact portion 8a and the clutch member 16 do not directly contact each other, noise is not generated.

As the rotation speed of the yo-yo bodies 1 and 2 decreases, the centrifugal force acting on the clutch material 16 decreases, so the clutch material 1
6 is biased by the spring body 22 with the protrusion 17 as a fulcrum, and rotates in the direction of the central axis 10. Then, the press contact portion 8a of the pulley 8 is pressed against the braking portion 24 of the clutch member 16, the pulley 8 is clutched by the clutch member 16, and the yo-yo bodies 1 and 2 and the pulley 8 start synchronous rotation according to the operation of the string 34. To do.

Further, since the lid body 6 can be opened and closed, by changing the clutch material 16 and the spring body 22, it is possible to select various idle time periods of the yo-yo bodies 1 and 2.

[Embodiment] FIGS. 1 to 6 show an embodiment of the present invention.

In FIG. 1 and FIG. 2, reference numerals 1 and 2 are a pair of yo-yo bodies, and a concave portion 3 is formed in a dish shape on the outer surface of one yo-yo body 1, and the other yo-yo body 2 is formed. Similarly, the concave portion 4 is also provided.

As shown in FIG. 2, a step portion 5 is provided on the inner wall of the concave portion 3 formed on the outer side surface of the yo-yo body 1, and the concave portion 3 is formed.
The wall surface 5a from the edge portion to the step portion 5 is formed in a reverse taper shape whose diameter increases from the edge portion of the recess 3 toward the step portion 5.

In addition, in order to form the wall surface 5a in a reverse taper shape, the recess 3
Using the difference in the thickness of the synthetic resin at each location forming the inner wall, the inner wall thickness is calculated so that the inner wall is formed in an inverse taper shape due to sink marks during cooling. It is formed without need. Therefore, the lid 6 that covers the recess 3 can be press-fitted so as to be opened and closed.

At the center of the yo-yo body 1, there is a central cylinder 7 that is long in the axial direction.
Is integrally formed, and an opening 9 for the pulley 8 having a shape into which the press contact portion 8a of the pulley 8 can be fitted is formed at one end of the central cylinder 7 (in the inner side surface direction of the yo-yo body 1). A hole 11 into which the head portion 10a of the central shaft 10 is fitted is provided at the other end portion (the outer surface direction of the yo-yo body 1).
The partition wall 12 is formed in a shape corresponding to 0a, and between the hole 11 and the opening portion 9, a partition wall 12 for forming a central axis hole 13 for the central axis communicating with the opening portion 9 is provided.

That is, the partition wall 1 formed between the opening 9 and the hole 11
A central shaft hole 13 through which the shaft portion 10b of the central shaft 10 penetrates is formed in the central portion of 2.

A pair of windows 14 and 14 are opened on a wall surface 9a corresponding to the opening 9 of the central cylinder 7 with a partition wall 15 interposed therebetween.

As shown in FIG. 3, a partition wall 15 is formed in the concave portion 3 of the yo-yo body 1 in the diametrical direction, and the inside is divided into two.

Reference numeral 16 denotes a clutch material, which together with the spring body 22 constitutes a clutch clutch mechanism for clutching the pulley 8, and as shown in FIG. A weight holding portion 2 that holds a weight 19 and a locking hole 18 that is rotatably locked to the protrusion 17.
0 is formed, and the locking portion 2 is formed at the center in the thickness direction.
3 and a control unit 24 facing the control unit 3 are provided.

One end of the spring body 22 is locked to the spring holding portion 21 that is recessed in the inner wall of the recess 3, and the other end is locked to the locking portion 23.

Therefore, the clutch member 16 positions the braking portion 24 from the window 14 on both sides of the partition wall 15 of the concave portion 3 and is urged by the spring body 22 in the direction of the central axis 10 so that the braking portion 24 protrudes into the opening portion 9 and the pulley is pulled. 8 is detachably press-contacted to the press-contacting portion 8a of 8, and a locking hole 18 is locked to the protrusion 17 at the terminal end, and the terminal end is rotatable about this point.

As shown in FIGS. 1 and 5, the yo-yo body 2 is provided with a recessed portion 4 on its outer surface, and a central cylinder 25 is integrally formed in the axial direction in the central portion thereof, like the yo-yo body 1. An opening 2 into which one part of the pulley 8 is fitted is provided at one end of the central cylinder 25 (in the inner side surface direction of the yo-yo body 2).
6 is formed, and a nut hole 28 into which a nut 27 that engages with the threaded portion 10c at the tip of the central shaft 10 is inserted is formed at the other end (the outer surface direction of the yo-yo body 2). A partition wall 38 is provided between the nut hole 28 and the opening 26 to form a central shaft hole 13 through which the central shaft 10 communicating with the opening 26 passes. Further, partition walls 29 and 30 are formed at right angles to each other so that the load on the yo-yo body 1 is the same.

As with the yo-yo body 1, a step portion 31 is provided on the inner wall of the concave portion 4 formed on the outer side surface of the yo-yo body 2,
The wall surface 31a from the edge of the recess 4 to the step 31 is
The recess 32 is formed in a reverse taper shape with a diameter increasing from the edge of the recess 4 toward the step 31, and the lid 32 covering the recess 4 is press-fitted so as to be openable and closable.

One end of the pulley 8 serves as a pressure contact portion 8a that is fitted into the opening 9 of the yo-yo body 1. The pressure contact portion 8a is the first
As shown in the figure, the cylindrical body 3 is made of an elastic soft member having a large frictional resistance and a length equal to that of the press contact portion 8a.
It is surrounded by 3 and is configured such that the braking portion 24 of the clutch material 16 is pressed against the cylindrical body 33 from the window 14 so that the pulley 8 is clutched. At the other end of the pulley 8,
The string 34 is fixed, and the end of the string 34 is fitted into the opening 26 of the yo-yo body 2.

Reference numeral 35 denotes a pipe having a hollow interior formed of a hard member, which is for positioning to determine a gap 36 between the yo-yo body 1 and the yo-yo body 2 as shown in FIG. And the one end face abuts on the partition wall 12 for forming the central shaft hole 13 for the central shaft 10 communicating with the opening 9 provided in the yo-yo body 1 and the other end face. Is the opening 2 of the yo-yo body 2.
The space 36 is positioned by abutting the partition wall 38 for forming the central shaft hole 13 communicating with the space 6.

If a commercially available bolt is used as the central shaft 10, a nut 27 corresponding to this can be used, so that the cost can be greatly saved.

Next, a method of assembling the yo-yo toy will be described.

As shown in FIG. 1, the weight holding portion 2 of the clutch material 16
Wear a weight 19 at 0. The weight load is determined in consideration of the strength of the spring body 22, the rotational speeds of the yo-yo bodies 1 and 2, and the centrifugal force associated therewith.

The projection 17 of the yo-yo body 1 has a locking hole 1 for the clutch member 16.
8 is engaged, and the spring body 22 is engaged with the spring holding portion 21 and the engaging portion 23 to dispose the clutch mechanism in the recess 3. At this time, the braking portion 24 of the clutch member 16 is the spring body 2
The opening 9 is pushed through the window 14 of the yo-yo body 1 by being urged by 2.
It is in a state of protruding in the direction.

On the other hand, the nut 27 is fitted into the nut hole 28 of the yo-yo body 2. One end of a string 34 is wound around and fixed to the pulley 8, and the pressure contact portion 8 a is surrounded by the cylindrical body 33.

Next, the central shaft (bolt) 10 is passed through the hole 11 on the outer side of the yo-yo body 1 to the central shaft hole 13, and the pipe 35 is passed through the central shaft 10 protruding inward.
Is penetrated from above the pipe 35, and the central shaft hole 13 on the side of the yo-yo body 2 is penetrated so that the threaded portion 10c at the tip portion and the nut 27 are screwed together.

That is, the pipe 35 is in a state of being fitted and inserted between the central shaft 10 and the pulley 8.

At this time, both ends of the pipe 35 contact the partition wall 12 of the yo-yo body 1 and the partition wall 38 of the yo-yo body 2 as shown in FIG. 6, so that the gap 36 between the yo-yo body 1 and the yo-yo body 2 is positioned. ing.

Both ends of the pulley 8 are fitted into the opening 9 of the yo-yo main body 1 and the opening 26 of the yo-yo main body 2, and the cylindrical body 33 of the pressure contact portion 8 a is the braking portion 24 of the clutch member 16.
The pulley 8 is in a state of being press-contacted with the pulley 8, and the pulley 8 is in a state of being clutched by the clutch member 16 biased by the spring.

Finally, when the lids 6 and 32 are press-fitted into the recesses 3 and 4 of both yo-yo bodies 1 and 2, respectively, the lids 6 and 32 are press-fitted to the step portions 5 and 31, respectively.

To open the lid 6 in order to replace the clutch member 16 and the spring body 22, after separating the yo-yo bodies 1 and 2,
If the central shaft 10 protruding toward the inner side surface of the yo-yo bodies 1 and 2 is pressed in the direction of the lid body 6, the head 10 of the central shaft 10 is pressed.
a presses the back surface of the lid body 6, and the lid body 6 is opened.

Next, the operation will be described.

As shown in FIG. 6, the pipe 35 is fitted between the central shaft 10 and the pulley 8 and both ends thereof are provided at the center portions of the inner side surfaces of the pair of yo-yo bodies 1 and 2, respectively. The partition wall 12, 38 for forming the shaft hole 13 is in contact with and the gap 36 is positioned.

In a normal state, the cylindrical body 33 surrounding the pressure contact portion 8a of the pulley 8 is in pressure contact with the braking portion 24 of the clutch member 16 which is spring-biased, so that the yo-yo bodies 1 and 2 and the pulley 8 are separated from each other. It is in a clutched state.

Therefore, the string 3 is attached to the portion of the pulley 8 located in the gap 36.
After winding 4, the yo-yo bodies 1 and 2 are separated from each other by holding the one end of the string 34 and releasing the yo-yo bodies 1 and 2.
It moves while rotating by winding and stretching of No. 4.

At this time, since one end of the clutch member 16 is rotatably supported by the protrusion 17 and the weight 19 is attached to the tip end, when the number of rotations of the yo-yo bodies 1 and 2 is large. Since the centrifugal force acting on the clutch material 16 becomes large, the clutch material 16 rotates in the circumferential direction of the yo-yo bodies 1 and 2 against the bias of the spring body 22 with the projection 17 as a fulcrum.

Therefore, since the press contact portion 8a of the pulley 8 is separated from the braking portion 24, the clutch of the pulley 8 is released and the yo-yo bodies 1 and 2 idle. During this time, the string 34 is not wound around the pulley 8 and is in an expanded state, so that the yo-yo body 1,
2 is not pulled up by the string 34, and the yo-yo bodies 1 and 2 rotate on the floor or the like. At this time, the pulley 8
Since the pressure contact portion 8a of the pulley 8 is surrounded by the cylindrical body 33 formed of an elastic soft member, the pressure contact portion 8a of the pulley 8 is
Since the clutch member 16 and the clutch member 16 do not directly contact each other, noise is not generated.

As the rotation speed of the yo-yo bodies 1 and 2 decreases, the centrifugal force acting on the clutch material 16 decreases, so the clutch material 1
6 is urged by the spring body 22 with the protrusion 17 as a fulcrum to rotate in the direction of the central axis 10. Therefore, the press contact portion 8a of the pulley 8 is
Is pressed against the braking portion 24 of the clutch material 16, so that the pulley 8 is clutched and starts rotating in synchronization with the yo-yo bodies 1 and 2, and the yo-yo bodies 1 and 2 have the cord 34 wound around the pulley 8 and are at hand. I can get it.

As described above, since the yo-yo bodies 1 and 2 spin idle due to the centrifugal force associated with the rotation speeds of the yo-yo bodies 1 and 2, various interesting operations using the yo-yo can be considered.

During the time when the clutch of the pulley 8 is released and the yo-yo bodies 1 and 2 are idling, the rotation speed of the yo-yo bodies 1 and 2, the load of the weight 19 of the clutch member 16 and the spring body 2 are increased.
It is related to the tension of 2. Therefore, since the lid body 6 can be opened and closed, if various clutch materials 16 and spring bodies 22 whose values are appropriately selected are prepared and replaced, the yo-yo bodies 1 and 2 can be idle for a long time. It can be arbitrarily selected.

[Effect of the Invention] The present invention is provided with an opening in which both ends of the pulley are fitted so as to face the center of the inner surface of the pair of yo-yo bodies.
A partition wall that forms a central shaft hole communicating with this opening is provided,
Since the pipes for both ends contacting this partition wall and positioning the gap were fitted between the central axis and the pulley, the gap of the yo-yo body was determined by providing a step on the shaft as in the conventional case. Since it is determined by the length of the pipe rather than by the length, positioning can be determined very easily, and it is not necessary to use a custom-made product as the center axis as in the past, but a commercially available bolt or the like can be used. .
In addition, since a commercially available nut can be simply fitted into the nut hole as the screw to be screwed with the central shaft, the production and assembly of the yo-yo body is very simple, resulting in a very low product cost.

Further, since the pressure contact portion of the pulley with which the clutch material is pressure-contacted is surrounded by the cylindrical body formed of the elastic soft member having large frictional resistance, the pulley can be easily attached to the pressure contact portion and the clutch mechanism can be It is possible to eliminate the noise when the yo-yo body is idled after being released.

Further, a step portion is provided on the inner wall of the concave portion in which the spring-biased clutch material is stored, and the wall surface from the edge portion of the concave portion to the step portion has a large diameter from the edge portion of the concave portion toward the step portion. Since it is formed in a reverse tapered shape and the lid that covers the recess is press-fitted so that it can be opened and closed, it is easy to attach the lid, and no means for fixing the lid to the yo-yo body is required, and the product cost is low. You can save more.

In addition, since the lid can be opened and closed, the clutch material and spring body can be exchanged, so it is possible to set the idle time of the yo-yo body to any desired value. can get.

[Brief description of drawings]

1 to 6 show an embodiment of the present invention. FIG. 1 is a developed sectional view including a partial side view, FIG. 2 is a side view, and FIG. 3 is a lid of a yo-yo body 1. 4 is a plan view showing a state in which the body 6 is opened, FIG. 4 is a side view of the clutch member 16, FIG. 5 is a plan view showing a state in which the lid 32 of the yo-yo body 2 is opened, and FIG. 7 to 9 show a conventional example, FIG. 7 is a perspective view, FIG. 8 is a plan view of the shaft 56, and FIG. 9 is a developed view. 1, 2 ... Yo-yo body 3, 4 ... Recessed portion 5, 31 ... Step portion 6, 32 ... Lid body 6a, 31a ... Wall surface 8 ... Pulley 8a ... Press contact portion 9, 26 ... Opening portion 10 ...... Center shaft 12, 38 ...... Bulk wall 13 ...... Center shaft hole 16 ...... Clutch material 22 ...... Spring body 24 ...... Brake part 27 ...... Nut 28 ...... Nut hole 33 ...... Cylindrical body 34 ...... String 35 …… Pipe 36 …… Gap

Claims (4)

[Scope of utility model registration request] 1. A pair of yo-yo bodies having concave portions on their outer side surfaces, a central shaft for supporting the pair of yo-yo bodies at both ends thereof with a predetermined gap, and a central shaft disposed in the concave portions. By the braking portion of the pair of clutch members that are spring-biased in the direction, the pulley through which the central shaft penetrates is clutched, the idling of the yo-yo body is prevented, and the clutch is generated by the centrifugal force generated by the rotation of the yo-yo body. A clutch mechanism configured such that the clutch of the pulley is released by the material rotating in the circumferential direction to allow the yo-yo body to idle, and one end of the yo-yo body is fixed to the pulley, and the pulley is inserted from the gap of the yo-yo body to the pulley. In a yo-yo toy having a string wound around, the both ends of the pulley are fitted so as to face the center parts of the inner side surfaces of the pair of yo-yo bodies. An opening is provided, and a partition wall that communicates with the opening and forms the central axis hole for the central axis is provided. A pipe for positioning the gap by contacting both ends with the partition and the central axis is provided. A yo-yo toy that is fitted between the pulley and the pulley. 2. The yo-yo toy according to claim 1, wherein the pressure-contacting portion of the pulley, which is in pressure-contact with the braking portion of the clutch member, is surrounded by a cylindrical body formed of a flexible elastic member having a large frictional resistance. . 3. A step portion is provided on an inner wall of a concave portion accommodating a spring-biased clutch material, and a wall surface extending from the edge portion of the concave portion to the step portion is formed from the edge portion of the concave portion to the step portion. The yo-yo toy according to (1) or (2), wherein the yo-yo toy is formed in a reverse taper shape having a larger diameter in the direction of the part, and a lid that covers the recess is press-fitted so as to be openable and closable. 4. A center shaft is a bolt, and a nut hole into which a nut screwed with the bolt is fitted is formed in one of the yo-yo bodies, and the pair of yo-yo bodies can be attached and detached by the bolt and the nut. The yo-yo toy according to claim 1, wherein the yo-yo toy is fixed to the.