JP2015042192A - Flywheel type two-wheel traveling toy - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flywheel type two-wheel traveling toy, even when a toy is moved slowly to rotate a flywheel, capable of travelling fast without being overturned.SOLUTION: The flywheel and a rotary input/output shaft 1 are linked via any of a flywheel rotation gear train 11 and a traveling gear train 12 by selective connection by a switching gear 14. A gear ratio when the rotary input shaft is rotated using the flywheel as a drive source is decreased compared with a case where the flywheel is rotated, so as to rotate the rotary input shaft at a higher speed in a same direction than the case of the flywheel rotation.

Description

  The present invention relates to a two-wheeled toy imitating a motorcycle. More specifically, the present invention relates to a two-wheeled toy that uses a flywheel as a drive source.

  A conventional flywheel type two-wheeled toy imitating a motorcycle using a flywheel as a power source generally employs a mechanism for rotating the flywheel by increasing the rotation of the rotation input shaft. For example, a flywheel and a rotary input / output shaft are always connected via a speed increasing gear train with a constant gear ratio, and a rear wheel, a tire (not shown) attached to the rotary input / output shaft is rubbed against the floor surface, etc. There is a structure that accumulates rotational kinetic energy by rotating the flywheel at a high speed by transmitting the rotation input by rotating with a speed increasing gear train and transmitting it to the flywheel. 4).

  In addition, a flywheel type two-wheeled toy equipped with a pull-back type flywheel mechanism that rotates the flywheel by moving the toy backward so that it moves forward when the hand is released has been proposed. This flywheel two-wheeled toy includes a drive wheel that comes into contact with the floor only when the flywheel is rotated between a rotatable front wheel and a rear wheel, and the rear wheel is configured by a flywheel. By linking the wheels via a speed increasing gear train, the rotation of the drive wheels is increased to rotate the flywheel / rear wheel in the reverse direction (Patent Documents 1 and 3). . Here, the front wheel is provided so as to be movable up and down with a coil spring interposed with respect to the traveling toy body. The front wheel and the driving wheel are placed on the floor while sinking the front of the traveling toy body 5 and floating the rear wheel side. It is provided so that the flywheel can be rotated by moving the toy so that it pulls back on the ground. When the hand is released from the toy, the front of the traveling toy body that has been submerged returns to its original position, and the driving wheel moves away from the floor and the front and rear wheels are grounded and run forward. .

  Furthermore, a flywheel type two-wheel traveling toy that rotates a flywheel that constitutes a rear wheel using a front wheel has also been proposed (for example, Patent Document 2). This two-wheeled toy is provided with a gear train on the toy body side for rotating the rear wheel constituted by a flywheel on the toy main body side, and a wheel mounting member for supporting the front wheel is provided so as to be freely movable in and out of the toy main body and is an elastic member. The front wheel is always urged away from the toy body through the interposition of the front wheel, the drive gear rotating with the front wheel can be moved toward and away from the toy body together with the front wheel, and the drive gear and the speed increasing gear train are intermittently connected to the front wheel. This is done by moving up and down. In this two-wheeled toy, the front wheel side drive gear is connected to the rear wheel side gear train by sinking the front of the toy main body with the rear wheel side floating, and the front wheel rotation is driven by the drive gear and the speed increasing gear train. It is transmitted to the flywheel / rear wheel via the wheel and rotated at high speed, and the connection to the drive gear and the speed increasing gear train is disconnected by releasing the pressing to the toy body, and the rotation of the front wheel and the flywheel / rear wheel It separates rotation.

Utility Model Registration No. 3092361 International Publication WO2010 / 095644

  However, according to the conventional flywheel type two-wheeled toy in which the flywheel and the rotation input shaft are always linked via a single speed increasing gear train, the rotary energy is also released when it is accumulated in the flywheel. Even when the gear ratio is constant, the rotation input / output shaft and thus the tire cannot be rotated at a speed higher than that when the flywheel is rotated. In other words, because it runs at the speed of moving the toy to rotate the flywheel, if you slowly move the toy and rotate the flywheel, it will only run slowly, so it will easily fall over .

  On the other hand, in order to run a flywheel type two-wheeled toy quickly, the flywheel must be rotated vigorously, and an agile operation that rubs the tire on the rotation input / output shaft strongly and quickly on the floor surface is necessary, Operation is difficult for infants. In other words, although it is a toy for small children, it is a toy that is difficult to operate and easy to play for small children. Moreover, the operation of rubbing the tire strongly and quickly on the floor has the disadvantage of accelerating tire wear.

  Also, to increase the speed at the start of the run, if you try to land on the floor after applying a sufficient rotational force to the flywheel by pushing the motorcycle toy forward 2 or 3 times forward, Since it is a rear wheel, the rear wheel of high-speed rotation comes into contact with the floor surface, and at the same time, the front of the toy is hit from the rear and the traveling becomes unstable, and it may not be able to travel straight or it may spin and fall.

  Also, according to this flywheel type two-wheeled toy, when it is released from the toy, it is the maximum speed and it does not switch to a higher speed, so wheelie (wheelie: a technology that runs only on the rear wheels by floating the front wheels) ), The hand must be released in the state of being wheeled, and the movement of switching from two-wheel driving to wheelie driving cannot be enjoyed.

  Furthermore, according to the flywheel type two-wheeled toy described in FIGS. 1 to 3 of Patent Document 1, in order to rotate the flywheel at a high speed, the toy body is pressed against the floor surface with the rear wheel floating, and the front wheel The drive wheel between the rear wheel and the rear wheel must be grounded. However, if the rear wheel is lifted too high, only the front wheel cannot be grounded and the driving wheel cannot be grounded, and the front wheel is relatively moved upward by pushing down so as to sink the front of the traveling toy body and compressing the coil spring. If it is not moved to the position, only the front wheels are in contact with the ground, and the drive wheels are also in a floating state. This series of operations is difficult for a clumsy person at hand, especially an infant, and involves a problem that it cannot be played well.

  In particular, infants often try to push the toy in the direction they want to run instinctively, so the flywheel type two-wheeled toy that rotates and accumulates the flywheel with a pullback type is difficult to play It is.

  Further, since driving wheels other than front wheels and rear wheels that do not exist in an actual motorcycle are exposed from the toy body, there is a problem in that the reality as a two-wheel traveling toy imitating a motorcycle is lacking and the appearance is poor. In addition, since the rear wheels constituting the flywheel together with the drive wheels continue to rotate, if attention is paid only to the rear wheels, the drive wheels are mistakenly held and the rotation of the rear wheels is stopped. That is, there is a problem that it is troublesome to take care of the position where the toy body is gripped.

  Furthermore, the point that the operability is bad is the same as in the flywheel two-wheeled traveling toy described in Patent Document 2, and the front wheel side drive gear and the front wheel side are driven by floating the rear wheel side while sinking the front of the traveling toy body. It is difficult to rotate the flywheel by rubbing only the front wheels against the floor surface while optimally engaging the gear train on the toy main body side to transmit rotation smoothly. That is, according to the flywheel two-wheeled toy described in Patent Document 2, the front wheel side drive gear is connected to the rear wheel side gear train by sinking the front side of the toy body floating on the rear wheel side. The rotation of the front wheel must be transmitted to the flywheel / rear wheel via the drive gear and the speed increasing gear train to rotate at high speed. However, the front wheel drive gear cannot be engaged with the rear wheel gear train by simply lifting the rear wheel high, and the front wheel drive gear and the traveling toy main body The drive gear cannot be rotated because an appropriate backlash cannot be set with the speed-up gear train without a gap. Therefore, this operation is difficult, and there is a problem that it is difficult for a clumsy person at hand, especially an infant.

  The present invention is a flywheel type two-wheeled toy that can run by rotating the rotation input / output shaft at a higher speed than when the flywheel is rotated, in other words, the toy is slowly moved to rotate the flywheel. The object is to obtain a flywheel type two-wheeled toy that can be run quickly without falling down. And it aims at providing the toy which cannot fall easily by making it run faster than the speed at the time of releasing a hand from a toy.

  In order to achieve this object, the invention according to claim 1, the front wheel and the rear wheel, a vehicle body frame connecting the front wheel and the rear wheel, a flywheel disposed between the front wheel and the rear wheel, a rear wheel or A rotation input / output shaft that rotates the front wheel and a transmission gear train that links the flywheel and the rotation input / output shaft are provided. By rotating the rotation input / output shaft, the flywheel is driven to rotate and the hand is released from the body frame. In the flywheel type two-wheeled toy that rotates the rotation input / output shaft by using the flywheel as a drive source, the speed change gear train includes a gear on the same axis as the flywheel and a gear on the same axis as the rotation input / output shaft. Two gear trains and a traveling gear train having a gear ratio smaller than that of the flywheel rotating gear train, and meshed with a gear coaxial with the rotation input / output shaft When the rotation is input from the rotation input / output shaft side while being supported so as to be able to revolve around the gear, it is incorporated and meshed with the flywheel rotating gear train side, while the rotation is input when the rotation is input from the flywheel side. A switching gear that is incorporated and meshed with the gear train side is provided, and either the flywheel rotating gear train or the traveling gear train is connected between the flywheel and the rotation input / output shaft by selective connection by the switching gear. Linked via the transmission gear train of the system, the rotation input is made with a smaller gear ratio when the rotation input shaft is rotated using the flywheel as a drive source than when the flywheel is rotated by rotation input from the rotation input shaft. The shaft is rotated in the same direction at a higher speed than when the flywheel is rotated.

  In the flywheel two-wheeled toy according to the invention described in claim 2, the switching gear meshes with the flywheel rotating gear train at the lower moving end of the revolving of the switching gear, and the upper movement of the revolving of the switching gear. At the end, the switching gear runs up around the gear coaxial with the rotation input / output shaft and meshes with the traveling gear train.

  According to the flywheel type two-wheeled toy according to claim 1, the rotation of the rotation input / output shaft is accelerated through the flywheel rotating gear train and then transmitted to the flywheel, and the flywheel is rotated at a high speed. Accumulate energy. When the rotation input from the rotation input / output shaft side is stopped, the switching gear is switched to the traveling gear train side having a gear ratio smaller than that of the flywheel rotating gear train, and the rotation of the flywheel is performed via the traveling gear train. The rotation input / output shaft rotates at a higher speed than when the flywheel rotates. In other words, the intervening gear train is automatically switched between the input for rotating the flywheel and the output for rotating the rotation input / output shaft using the rotation of the flywheel as a drive source, and the output is compared with the gear ratio at the time of input. Since the transmission gear train is configured such that the gear ratio at the time becomes small, the rotation input / output shaft rotates at a higher speed during traveling than the rotation of the rotation input / output shaft when rotating the flywheel.

  Therefore, even if you slowly move the toy and rotate the flywheel, it will run faster and faster, so it will not easily fall over in combination with the gyro effect of the flywheel, and even a small child can handle it easily. It's easy and fun to play. In other words, even if the toy is moved vigorously and the flywheel is rotated at a high speed so that the toy can be released well on the floor, the toy can be run without falling, so even a small child can easily run.

  In addition, according to the flywheel type two-wheeled toy according to claim 1, after the hand is released from the toy, the speed is switched to a higher speed than when the hand is released. For example, it is possible to enjoy the movement of switching from two-wheel driving to wheelie driving (wheelie).

  Furthermore, according to the flywheel type two-wheeled toy according to claim 1, the rear wheel is used simply by grasping the toy main body, pushing the wheels of both the front wheel and the rear wheel against the floor surface and releasing the pushing hand in the traveling direction. Thus, since the toy can be run at a higher speed than when the toy is released after the flywheel is rotated, the operation is simple, and it can be easily performed even for a clumsy person at hand, particularly an infant. Moreover, since it is sufficient to pay attention to only the rear wheel rotated by the flywheel, it is possible to play with little concern about the position where the toy body is gripped. Further, since the driving wheel between the front wheel and the rear wheel, which is far from the appearance of the original motorcycle, is not necessary, the appearance as a two-wheeled toy imitating a motorcycle can be brought close to an actual motorcycle. Therefore, it can be made to look good as a two-wheeled toy.

  In addition, since the flywheel is disposed between the front wheel and the rear wheel and rotates at high speed, posture stability due to the gyro effect of the flywheel is increased at the center of the two-wheeled toy, and stable traveling is possible. That is, even if the toy is pushed out slowly, the flywheel rotates at a high speed around the center of the toy, so that an inertial force is generated in the direction in which the two-wheeled traveling toy is raised due to the gyro effect, making it difficult to fall.

  According to the second aspect of the present invention, when the gear train is switched by the movement of the switching gear, the flywheel rotation gear train is switched to the traveling gear train by the movement of the switching gear and at the same time the rotation of the switching gear is performed. Since the speed is increased and rotation input is performed from the flywheel side, the switching gear is urged to bite into the traveling gear train side and the switching operation does not become unstable. In other words, when the toy starts running, the position and meshing of the switching gear is not stable, and the operation is not stable due to frequent switching between the traveling gear train and the flywheel rotating gear train. It does not cause the problem.

It is a perspective view which shows one Example which applied the flywheel type two-wheeled travel toy of this invention to the toy imitating a motorcycle. It is a perspective view in the state where one side of the split outer body of the flywheel two-wheeled toy was removed and the gear unit was exposed. FIG. 3 is a perspective view showing a state in which a part of the frame of the gear unit of the flywheel two-wheeled toy of FIG. 2 is removed and two transmission gear trains are exposed. FIG. 4 is a side view of FIG. 3. FIG. 4 is a diagram illustrating only a flywheel rotating gear train in the side view of FIG. 3. FIG. 4 is a diagram illustrating only a traveling gear train in the side view of FIG. 3. It is a perspective view of the gear unit used for the flywheel type two-wheel traveling toy of this invention. FIG. 8 is a perspective view of a state where a part of the frame of the gear unit of FIG. 7 is removed and two transmission gear trains are exposed. It is a longitudinal cross-sectional view which expand | deploys and shows meshing | engagement of the gearwheel for flywheel rotation of the flywheel type two-wheeled toy. It is a longitudinal cross-sectional view which expand | deploys and shows mesh | engagement of the gearwheel for driving | running | working of the flywheel type two-wheeled traveling toy.

  Hereinafter, the configuration of the present invention will be described in detail based on embodiments shown in the drawings.

  1 to 10 show an example of an embodiment of a flywheel two-wheeled toy according to the present invention. The flywheel type two-wheeled toy of this embodiment has a shape imitating a motorcycle, and a rotary input / output shaft 1 to which a rear wheel 8 is mounted, a flywheel 2, and a flywheel rotating gear train that links them. 11 and two gear trains of the traveling gear train 12, a front wheel 7 that is steerably attached to the gear box 3, and an exterior simulating the appearance of a motorcycle that covers the gear box 3. It is comprised with the body 4. FIG. The exterior body 4 is divided into left and right parts, and looks like a motorcycle toy by sandwiching the gear box 3. Therefore, in this embodiment, the vehicle body frame is configured by the gear box 3 and the exterior body 4. Reference numeral 24 in the figure denotes a stand.

  The gear box 3 is composed of three members, a right frame 3a and a left frame 3b, which are generally formed of plastic, and a partition frame 3c that partitions them, and the flywheel 2 rotates between these three members 3a, 3b, and 3c. The input / output shaft 1 and two transmission gear trains, which are a flywheel rotating gear train 11 and a traveling gear train 12, which connect these and transmit the rotation, are rotatably supported and incorporated. Specifically, the flywheel 2 and the rotation input / output shaft are formed by the shaft support holes 33 respectively opened in the right and left frames 3a and 3b and the partition frame 3c held between them. 1 and each shaft portion of each gear constituting two transmission gear trains of the flywheel rotating gear train 11 and the traveling gear train 12 are supported and accommodated rotatably.

  Inside the gear box 3, spaces are formed between the partition frame 3c and the right frame 3a and between the partition frame 3c and the left frame 3b, respectively, and the flywheel 2 is installed in one space and the other space. The two transmission gear trains of the flywheel rotating gear train 11 and the traveling gear train 12 are housed in the housing.

  Further, in the case of the present embodiment, the gear box 3 includes a half bearing portion 6 that rotatably supports the shaft portion of the handle 10 and the front fork 5 on each of the right frame 3a and the left frame 3b of the gear box 3, and A pin hole 9 through which the connecting pin 28 supporting the rear portion of the exterior body 4 is passed, and a pin hole 31 through which the pin 30 connecting the front lower part of the exterior body 4 to the gear box 3 is provided. Therefore, when assembling the pair of right frame 3a and left frame 3b and the partition frame 3c separating them, the shaft portions of the handle 16 and the front fork 5 are sandwiched between the half bearing portions 6, respectively, and the exterior body Assembling is completed by connecting 4 with pins 28 and 30.

  The front wheel 7 is rotatably supported by the front fork 5 via the axle 25, and the front fork 5 is attached to the bearing portion 6 provided at the front portion of the gear box 3, so that the front wheel 7 can be oriented as necessary. Can be changed. In the case of the present embodiment, the front fork 5 has a flange 26 and a bearing surface 27 for retaining, and each of the bearing portions 6 provided in a half-divided state on the left and right frames 3 a and 3 b of the gear box 3. It is sandwiched by the lower half and is rotatably supported. In the present embodiment, the handle 10 is not shown, but has a convex portion that fits into the concave portion 6a formed in a part of the abutting surface of the half bearing portion 6 of the left and right frames 3a, 3b. By being provided, it is fixed so as not to rotate with respect to the gear box 3. Needless to say, the handle 10 may be rotatably mounted by using the pin 29 inserted into the hole of the upper half of the bearing portion 6.

  The flywheel 2 accommodated in the gear box 3 and the rotation input / output shaft 1 are selectively connected by the switching gear 14 so that the gear ratio is higher than that of the flywheel rotating gear train 11 or the flywheel rotating gear train 11. Is selectively linked to one of the small traveling gear trains 12 to rotate the flywheel 2 using the rear wheel 8 as a drive wheel and to rotate the rear wheel 8 using the flywheel 2 as a drive source.

  A first gear composed of a small gear 19 is fixed to the shaft 23 integrated with the flywheel 2. The small gear 19, which is the first gear, is engaged with the second large gear 18 composed of the small gear 17 and the large gear 18 on the same axis and the sixth gear composed of the gear 22. Here, the small gear 17 of the second gear meshes with the large gear 16 of the third gear composed of the small gear 15 and the large gear 16 which are coaxial. And when the 4th gear which consists of the change gear 14 which revolves around the 5th gear (large gear 13) coaxial with the rotation input / output shaft 1 is meshed with the small gear 15 of the 3rd gear, The fifth gear (large gear 13) is meshed with the fourth gear (switching gear 14). On the other hand, the sixth gear (gear 22) is meshed with the large gear 21 of the seventh gear composed of the large gear 21 and the small gear 20 on the same axis. When a fourth gear comprising a switching gear 14 revolving around a fifth gear (large gear 13) coaxial with the shaft 1 is engaged, the fifth gear is connected via the fourth gear (switching gear 14). (Large gear 13) is meshed. The above-mentioned gears Nos. 2 to 4 and Nos. 6 and 7 are usually integrally formed with a shaft of plastic such as polyacetal.

  Here, the switching gear 14 is movably supported in an arc-shaped long hole 32 whose center of curvature is the center of rotation of the fifth gear (large gear 13), and the fifth gear (large gear) is selected depending on the rotational input direction of the meshing gear. By revolving around the gear 13), it is run up or down, and the connected counterpart gear is switched. When the fifth gear (large gear 13) is not rotating, the switching gear 14 descends to the lower edge of the long hole 32 due to gravity drop, and meshes with the small gear 15 of the third gear. Further, during rotation of the flywheel in which rotation is input from the rotation input shaft 1 side, the rotation is transmitted through the flywheel rotating gear train 11 while rotating the flywheel 2 while meshing with the small gear 15 of the third gear. . On the other hand, when rotation transmission is generated using the flywheel 2 as a drive source and a load is applied to the rotation input / output shaft 1 side due to the grounding of the rear wheel 8, the switching gear 14 moves upward so that the fifth gear 13 intersects. It runs up and moves to the upper end edge of the arc-shaped long hole 32 and meshes with the seventh gear (the small gear 20 and the large gear 21) of the traveling gear train 12.

  Therefore, the flywheel rotating gear train 11 includes a first gear (small gear 19) coaxial with the flywheel 2, a second gear (small gear 17 and large gear 18), and a third gear (small gear 15). A large gear 16), a fourth gear (switching gear 14) and a fifth gear (large gear 13) coaxial with the rotation input / output shaft 1; On the other hand, the traveling gear train 12 includes a first gear (small gear 19) coaxial with the flywheel 2, a sixth gear (gear 22), a seventh gear (large gear 21 and small gear 20), 4 It consists of a number gear (switching gear 14) and a rotation input / output shaft 1 and a fifth gear (large gear 13) on the same axis. The gear ratio of the traveling gear train 12 is set to be smaller than the gear ratio of the flywheel rotating gear train 11. That is, in the flywheel rotating gear train and the traveling gear train, only the gear ratio is changed while being in the same rotational direction. In the case of this embodiment, the gear ratio (7.5) of the traveling gear train is set to about half of the gear ratio (15.94) of the flywheel rotating gear train.

  According to the flywheel two-wheeled toy configured as described above, when the toy is advanced while pressing the rear wheel 8 against the floor or the like, the same rotational direction as the rear wheel 8 (forward direction: clockwise direction in FIG. 5). ) And the rotation input / output shaft 1 is rotated and is located at the lower end edge of the arc-shaped elongated hole 32 and is engaged with the third gear (the small gear 15 and the large gear 16) of the gear train 11 for rotating the flywheel. The rotation of the rear wheel 8 via the gear 14 is performed by rotating the input / output shaft 1 and 5th gear (large gear 13) → switching gear 14 → 3rd gear (small gear 15 and large gear 16) → 2nd gear (small gear). 17 and the large gear 18) → the first gear (the small gear 19) is transmitted to the flywheel 2, and the flywheel 2 is rotated at a high speed to store rotational energy. In this state, if the flywheel type two-wheeled toy is placed on the floor and released, rotation is transmitted to the two systems of the flywheel rotating gear train 11 and the traveling gear train 12 using the flywheel 2 as a drive source. . On the other hand, since the load is applied to the rotation input / output shaft 1 side simultaneously with the grounding of the rear wheel 8, the switching gear 14 runs upward so as to intersect with the fifth gear 13, and the upper end edge of the arc-shaped elongated hole 32 The gear is engaged with the seventh gear (the small gear 20 and the large gear 21) of the traveling gear train 12 (see FIGS. 2 and 6) and linked between the flywheel 2 and the rotary input shaft 1. The train is switched to the travel gear train 12. Therefore, the rotation of the flywheel 2 is as follows: No. 1 gear (small gear 19) → No. 6 gear (gear 22) → No. 7 gear (large gear 21 / small gear 20) → No. 4 gear (switching gear 14) → No. It is transmitted to the gear (large gear 13) and the rotation input / output shaft 1, and the rotation input / output shaft 1 is rotated in the same direction at a higher speed than when the flywheel is rotated. According to the present embodiment, since the gear ratio (7.5) of the traveling gear train is set to about half of the gear ratio (15.94) of the flywheel rotating gear train, the flywheel rotates during traveling. Drive at twice the speed of the hour. Moreover, immediately after the start of traveling, the switching gear is connected to the flywheel rotating gear train side so that it travels at the speed at the time of the flywheel rotation, but it is switched to the traveling gear train by running up of the switching gear, Because it is twice as fast, you can enjoy a two-speed running that increases in the middle of the run, and if the speed at the flywheel rotation is momentum, you can enjoy a run that switches to wheelie running after you start running You can also.

  The above-described embodiment is an example of a preferred embodiment of the present invention, but is not limited thereto, and various modifications can be made without departing from the scope of the present invention. For example, the rotation input / output shaft 1 may be disposed on the front wheel 7 side, and the front wheel 7 may be used to rotate the flywheel 2 and travel using the flywheel 2 as a drive source. In this case, the direction of the front wheels 7 is fixed, and only linear travel is possible. However, since the front wheels are driven, the travel is unstable and the spin is less likely to occur.

DESCRIPTION OF SYMBOLS 1 Rotational input / output shaft 2 Flywheel 3 Gear box 4 Exterior body 5 Front fork 6 Bearing part 7 Front wheel 8 Rear wheel 11 Gear wheel for flywheel rotation 13 Gear coaxial with the rotational input / output shaft constituting No. 5 gear 14 4 Switch gears 15 and 16 constituting the number gears Coaxial small gears and large gears 17 and 18 constituting the third gears Coaxial small gears and large gears constituting the second gear 19 Flywheels constituting the first gear And a gear 12 that is coaxial with the gear 13 A gear train for traveling 13 A gear that is coaxial with a rotational input / output shaft that constitutes the fifth gear 14 A switching gear that constitutes the fourth gear 20, 21 A small gear and a large gear that constitute the seventh gear Gear 22 Small coaxial gear and large gear constituting No. 6 gear 19 Flywheel constituting coaxial No. 1 gear and coaxial gear 23 Flywheel shaft 32 Arc-shaped elongated hole

Claims (2)

A front wheel and a rear wheel, a vehicle body frame connecting the front wheel and the rear wheel, a flywheel disposed between the front wheel and the rear wheel, a rotation input / output shaft for rotating the rear wheel or the front wheel, A transmission gear train for linking the flywheel and the rotation input / output shaft; driving the flywheel by rotating the rotation input / output shaft; releasing the hand from the body frame; In a flywheel type two-wheeled toy that rotates the rotation input / output shaft using as a drive source,
The transmission gear train includes a flywheel rotating gear train including a gear coaxial with the flywheel and a gear coaxial with the rotation input / output shaft, and a traveling gear having a smaller gear ratio than the flywheel rotating gear train. When the rotation is input from the rotation input / output shaft side, the flywheel is rotated when the rotation input / output shaft side is supported. While being incorporated on the gear train side and meshing, when rotation is input from the flywheel side, a switching gear is provided that is incorporated and meshed on the traveling gear train side,
By the selective connection by the switching gear, the flywheel and the rotation input / output shaft are linked via the transmission gear train of either the flywheel rotation gear train or the traveling gear train. ,
Compared to rotating the flywheel by rotating input from the rotating input shaft, the gear ratio when rotating the rotating input shaft using the flywheel as a drive source is reduced to rotate the rotating input shaft to the flywheel. A flywheel-type two-wheeled toy that rotates in the same direction at a higher speed than the time. The switching gear meshes with the flywheel rotation gear train at the lower moving end of the revolution of the switching gear, and the switching gear is coaxial with the rotational input / output shaft at the upper moving end of the revolution of the switching gear. The flywheel type two-wheel traveling toy according to claim 1, wherein the toy travels around the gear and meshes with the traveling gear train.

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