JPH0439873B2 - - Google Patents

Description

[Detailed description of the invention] Prior art to which the invention pertains This invention provides that when a wheel is rotated in a fixed direction with an axle fixed, rotational energy is accumulated in a built-in power section, and when the wheel is released, rotational energy is released. This invention relates to a wheel with a built-in power unit that allows the wheel to be rotated in the opposite direction.

Conventional technology and its disadvantages It has a built-in spring-type power unit, and when the wheel is rotated in one direction, the spring is wound up and rotational energy is accumulated, and when the wheel is released, the rotational energy is released from the spring and the wheel is moved in the other direction. The wheels with a built-in power unit that rotate are developed in Japanese Patent Application Laid-Open No. 1983-
It is known from Publication No. 27578.

However, in this prior art, an input gear train for inputting to the mainspring and an output gear train for outputting from the mainspring are arranged parallel to the axle, and the mainspring is connected to the axle and the outer peripheral inner wall surface of the wheel. Firstly, the assembly of the components is not easy, and secondly, the thickness of the accommodation space for the arrangement of the gear train becomes large, thus reducing the tread width of the wheel. It is difficult and the third
Another disadvantage is that the maximum diameter of the mainspring is limited to less than the radius of the wheel, so it is impossible to increase the rotational energy storage amount and output torque of the mainspring.

Purpose of the Invention In view of the above points, the present invention improves the configuration of the input gear train and the output gear train and the mounting structure of the mainspring, thereby making it possible to easily assemble the component parts and reduce the tread width of the wheel. can,
Another object of the present invention is to provide a wheel with a built-in power unit that can increase the amount of energy stored in the mainspring to obtain a large output torque.

Means for Achieving the Objective In order to achieve the above objective, the wheel with a built-in power unit according to the present invention includes: (a) a hollow wheel formed by joining a pair of left and right dish-shaped cases; an axle which is fixedly fixed therethrough, is rotatably penetrated through the center of the wheel, and has the gear in one case of the wheel; (c) has a small gear in the center and an internal gear on the outer periphery; a rotary plate through which the axle passes through the center of the small gear and rotatably provided in the wheel with the small gear in close proximity to the axle; (d) the axle is disposed within a case of one of the wheels; an input gear train and an output gear train that are arranged on opposite sides of each other; the input gear train includes a starting gear that meshes with the gear of the axle, a terminal gear that meshes with the small gear of the rotating plate, and a starting gear and a terminal gear. an intermediate idle gear that meshes with the wheel; the output gear train includes a terminal gear that meshes with the internal gear of the rotating plate; and an idle gear that meshes with the terminal gear and the gear of the axle; is stored in the other case of
The present invention is characterized in that it has a mainspring having one end fixed to the rotary plate and the other end fixed to the other case.

Operation When the axle is fixed and the wheel is forcibly rotated in one predetermined direction, the rotary plate is rotated in a fixed direction via the gears on the axle and the input gear train, and the mainspring is wound up. At this time, the idle gear of the output gear train is separated from the pinion of the rotating plate.

Furthermore, when the wheel is released, the rotating plate rotates in the opposite direction due to the restoring rotational force of the mainspring, and the axle is rotated in the other direction via the output gear train and the gears on the axle. At this time, the idle gear of the input gear train interrupts transmission.

Embodiment of the Invention Next, an embodiment of the invention will be described with reference to the drawings.

The wheel with a built-in power unit according to the present invention has a hollow wheel A. This wheel has two plate-shaped cases A ₁ on the left and right to facilitate the installation of each gear train, rotary plate, and mainspring described later, and the fitting of the gears on the axle.
Case A ₂ is divided into two parts, with stepped recesses 1 formed at equal intervals on the outer circumference of one case A ₁ , and a pair of hooks 2 arranged at intervals corresponding to the stepped recesses 1 on the outer periphery of the other case A ₂ . with the openings of both cases facing each other, and each pair of hooks 2 connected to a stepped recess 1.
The hollow wheel A is formed by slidingly fitting and locking in the axial direction. The outer periphery of the wheel A can be covered with a rubber tire B having lugs 3 or a tire B having no lugs. However, by forming a tire lead pattern on the outer periphery of the wheel A, it may also serve as a tire. Further, although the wheel A has a perfectly circular side surface in the illustrated example, it may have a regular polygonal side surface other than a perfect circle.

One side of the wheel, i.e. one case
A gear train is installed inside _A1 . This gear train is provided to transmit to the axle C an amount of rotation that is proportional to the amount of rotation of the rotary plate that receives the unwinding force of the mainspring described later. The gear train includes input gear trains g ₂ to _{g 4} and output gear trains g ₅ and g ₆ .

The input gear train meshes with the gear _g1 of the axle C (described later) to amplify the amount of rotation given to it and gives a large amount of rotation in a predetermined direction to the rotating plate D (described later), and includes a plurality of gears having a predetermined gear ratio. are rotatably supported on a fixed plate 4 and are sequentially engaged with each other.
In the illustrated example, there are three gears: a starting gear _g2 , an intermediate gear _g3 , and a terminal gear _g4 formed in two stages, upper and lower.The intermediate gear _g3 has its rotation axis mounted on the fixed plate 4. It is inserted into the arc-shaped elongated hole 5 and can be engaged with and separated from the lower end gear _g4 . Also, the terminal gear
The upper part of g ₄ is made to protrude from a notch provided in the fixing plate 4 in _two directions toward the other case A.

The output gear trains g ₅ and g ₆ amplify the amount of rotation in the opposite direction of the rotary plate D described later and give it to the wheels, and the fixed plate 4 is connected to the fixed plate 4 in a state in which a plurality of gears having a predetermined gear ratio are sequentially meshed. It is configured so that it can be freely rotated. In the illustrated example, it is composed of a gear g ₅ whose shaft is inserted into an arc-shaped elongated hole 6 and a gear g ₆ provided near the outer periphery of the case A ₁ .

The axle C passes through the wheel A at the center of the side surface, and the gear _g1 fixed at the middle of the axle is meshed with the start gear _g2 of the input gear train and the end gear _g5 of the output gear train. be. To be precise, as will be described later, the terminal gear of the output gear train meshes only during output due to the effect of the circular arc-shaped elongated hole 6.

A rotary plate D having a boss 7 at the center is provided inside the wheel A, and the axle C is rotatably passed through the center of the boss of the rotary plate. Rotating plate D
, a small gear G ₇ is mounted on the outer periphery of a boss protruding from the surface facing the gear train, and a large gear G ₈ is mounted on the inner periphery of a ridge 8 protruding toward the gear train at the outer peripheral end of the rotating plate. The small gear g ₇ and the large gear g ₈ are respectively meshed with the end gear g ₄ of the input gear train and the start gear g ₆ of the output gear train at predetermined positions on the rotating plate. In this way, by meshing the pinion _g7 of the rotating plate with the terminal gear _g4 of the input gear train, the pinion _g7 also constitutes a part of the input gear train, increasing input efficiency. Furthermore, by meshing the large gear _g8 of the rotary plate with the starting gear _g6 of the output gear train, the large gear also constitutes a part of the output gear train, increasing output efficiency.

A mainspring E, which is a rotational energy storage body, is installed between the opposite side of the rotary plate D and the side of the other case _A2 , and the inner end of the mainspring protrudes to the side opposite to the small gear _g7 of the rotary plate. is fixed to the boss 7,
The outer end of the mainspring is fixed to or near the outer peripheral wall of case _A2 .

As mentioned above, the gear g ₁ of the axle C meshes with the start gear g ₂ of the input gear train and the end gear g ₅ of the output gear train, and the small gear g ₇ at the center of the rotating plate D meshes with the end gear of the input gear train. In order to facilitate the arrangement of each of the gear trains such that they can mesh with G ₄ and the large gear G ₈ on the outer periphery of the rotary plate and the starting gear G ₆ of the output gear train, the fixed The plate 4 is particularly formed in a U-shape (C-shape or horse-shaped) so that the axle C is located in the central notch thereof, and
The outer periphery of the fixed plate and the inner inner surface of the outer periphery of the wheel A are fixed to the side surface of one case _A1 with a distance slightly larger than the thickness of the ridge 8 of the rotary plate D.

The axle C is fixed to a base 9, such as a chassis of a traveling toy, as illustrated in FIG.

With the above configuration, the axle C is fixed and the tire B
, or if the wheel also serves as a tire, press the wheel A itself against the running surface and move it in a predetermined direction (to the left in Figure 4), the wheel A will rotate counterclockwise in Figure 4. , since _the axle is fixed, each gear _{g 2 to g 4} of the input gear train becomes the fourth
The _mainspring power section is wound up and rotational energy is stored.

In this case, the shaft of the intermediate gear g ₃ of the input gear train is moved in the direction of the axle C along the arcuate long hole 5, so it meshes with the gears g ₂ and g ₄ on both sides reliably, whereas the output The axis of gear _g5 of the gear train is moved in the opposite direction to the axle C along the arcuate long hole 6 and disengaged from gear _g1 , so that the rotation given by the large gear _g8 of the rotating plate D There is no competition between the force and the rotational force given from the axle C.

After winding up the mainspring in this way, when you release your hand holding down the moving toy to which this wheel is attached and release the wheel, rotational energy is released from the mainspring power section, and the large gear on the rotating plate D
G ₈ and small gear G ₇ rotate in the direction _shown by _the thick arrow in FIG _. A clockwise rotational force is applied to each end gear _g4 of the row. However, the intermediate gear g ₃ of the input gear train
Since the axis of is moved toward the outer end of the arcuate elongated hole 5, the terminal gear _g4 and the intermediate gear _g3 are separated, whereas
The shaft of gear _g5 of the output gear train is moved toward the inner end of the arc-shaped elongated hole 6, and the terminal gear _g5 is connected to gear _g6 and the axle C.
It meshes securely with gear _g1 . and the gears on the axle
Since g ₁ does not rotate, the output gears g ₆ and g ₅ revolve clockwise in the figure around the axle C, so the wheel A rotates in the same direction, and the running toy moves to the right in the figure. You will be traveling in the direction.

As mentioned above, since the wheel according to the present invention has a structure in which the wheel itself outputs power, there is no restriction that the wheel is attached to a base in connection with an external power unit in a transmission system as in the past. , it is possible to attach it to a desired position with respect to the base, and various wheel attachment modes can be realized.

For example, as shown in FIG. 6, ordinary wheels are attached to the lower front surface of a base 9A having the appearance of a running toy or animal, and a recess opening downward is provided in the center of the base. By attaching rod-shaped or disc-shaped stays to both sides of the recess, housing the wheel W according to the present invention in the recess, and fixing the wheel to the stay, a unicycle-like running toy or monster is provided, or , a mounting plate is provided in place of the recess, one or more wheels W according to the present invention are provided on each side of the mounting plate, and the axle is fixed to the mounting plate, as illustrated in FIG. It is possible to provide a running toy that is suitable for children.

Furthermore, since the axle does not need to be limited to a shape and structure for transmitting rotational force from an external power unit, it can have any shape and be mounted at any angle to the base. . The one shown in Fig. 5 uses an approximately Z-shaped axle and is attached to the base 9 so that it can be rotated at any angle and fixed at that angle, as shown in Figs. 6 to 10. Furthermore, you can enjoy moving the wheels to any position relative to the base and running the vehicle in various poses.

Effects of the Invention As described above, according to the present invention, rotational energy is stored in the wheel by a small amount of rotation of the wheel in one direction, and rotational energy is gradually released by opening the wheel, so that the wheel rotates in the opposite direction. It is possible to provide a wheel with built-in power that rotates a large amount. Therefore, since the structure is such that the wheels themselves output power,
It is possible to mount the wheels at a desired position relative to the pedestal without being subject to any restrictions on attaching the wheels to the pedestal in relation to an external power unit in a transmission system as in the past, and various wheel mounting modes are possible. can be realized. Furthermore, since the axle does not need to be limited to a shape and structure for transmitting rotational force from an external power unit, it can have any shape and be mounted at any angle to the base. .

Furthermore, (a) the input gear train and the output gear train are housed and installed in one case that forms the hollow wheel, and the mainspring is housed and installed in the other case, so the gear train and the mainspring can each be spaced. In particular, since the maximum inner diameter of the mainspring can be made equal to the maximum inner diameter of the case, the amount of stored rotational energy and the output torque can be increased.

(b) Also, one case in which the hollow wheel is molded accommodates a rotary plate having an internal gear on the outer peripheral end and a pinion in the center, and the pinion is brought close to the gear fixed to the axle. It is possible to arrange the input gear train and the output gear train in the case on opposite sides with respect to the pinion and the gears of the axle, and this arrangement also allows for a compact arrangement of the gear train. Since the thickness of the housing space can be reduced, the tread width of the axle can also be reduced.

[Brief explanation of drawings]

The drawings show one embodiment of the invention,
1 is a longitudinal sectional view, FIG. 2 is an exploded perspective view, FIG. 3 is a perspective view showing the inner surface of the rotating plate, and FIG. 4 is a sectional view taken along the line -- in FIG. 1. Figures 5 and below show examples of application of this invention. Figure 5 is a perspective view showing an example in which four wheels are installed, Figure 6 is an example in which one wheel is installed, and Figure 7 is an example in which two wheels are installed. It is a drawing showing an example of installation. 8 to 10 are side views showing modified examples of the one shown in FIG. 5. A...Wheel, B...Tire, C...Axle,
D...Rotating plate, E...Spring, _g2 to _g6 ...Gear train.

Claims (1)

[Scope of Claims] 1. (a) A hollow wheel formed by combining a pair of left and right dish-shaped cases, and (b) A hollow wheel that penetrates and is fixed to the axis of one gear and is rotatable about the center of the wheel. (c) an axle having a small gear in the center and an internal gear on the outer periphery, the axle passing through the center of the small gear, and having the gear in one case of the wheel; (d) a rotary plate rotatably provided within the wheel with a small gear in close proximity to the gear of the axle; and (d) an input gear disposed in one case of the wheel on opposite sides with respect to the axle. and an output gear train; the input gear train comprises a starting gear that meshes with the gear on the axle, a terminal gear that meshes with the small gear on the rotary plate, and an intermediate idle gear that meshes with the starting gear and the terminal gear; The output gear train consists of a terminal gear that meshes with an internal gear of the rotary plate, and an idle gear that meshes with the terminal gear and the gear of the axle, (e) housed in the other case of the wheel,
A wheel with a built-in power unit, comprising: a mainspring having one end fixed to the rotary plate and the other end fixed to the other case.