JP2562949Y2 - Spring driven toys - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a mainspring-driven traveling toy, more specifically, at least a driving wheel is rotated backward, a mainspring is wound up via a gear mechanism, and the restoring force of the mainspring is used. The present invention relates to a gearbox that performs an operation of driving the wheels forward, that is, a spring-driven traveling toy that uses a spring power device as a power source.

[0002]

2. Description of the Related Art The mainspring driving toy as described above is in the form of, for example, an automobile or the like, and usually has two rear wheels and two driving wheels driven by the gearbox. It has two front wheels that rotate freely.

An object of the present invention is to provide a mainspring-driven traveling toy which eliminates front wheels as in conventional toys, simplifies the structure, and simplifies the manufacturing process. .

[0004]

SUMMARY OF THE INVENTION The present invention has an effect of rotating a driving wheel at least backward, winding up a mainspring via a gear mechanism, and using the restoring force of the mainspring to drive the wheel forward. In a mainspring driven toy using a gear box as a power source, an axle driven by the gear box, two wheels attached to both ends of the axle, and provided to project downward from the bottom of the toy body, In addition to the two wheels, a projection that contacts a surface such as a floor is provided, and the vehicle travels by three-point contact between the two wheels and the projection.

[0005]

As described above, in the present invention, the conventional toy does not have a front wheel, but has only the above-mentioned projection, so that the structure is simple and the step of assembling the front wheel is omitted. Therefore, the manufacturing cost can be reduced. Therefore, as a whole, the mainspring-driven traveling toy of the present invention is significantly cheaper than the conventional mainspring-driven traveling toy.

If the projection is provided at a position deviated from the center line in the front-rear direction of the toy, the traveling toy also performs a rotational movement about the projection, so that the traveling toy does not travel linearly but randomly. Travel in the direction can be performed.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a side view of a mainspring driving toy according to an embodiment of the present invention, and FIG. 2 is a bottom view of the mainspring driving toy.

In FIG. 1, reference numeral 1 denotes a toy body formed of plastic or the like, and has a hollow interior. At the bottom of the toy body 1, a gearbox, which may be a conventionally known gearbox, that is, a gearbox housing portion 3 for housing a mainspring power unit 2 is provided. This spring power unit 2 has, as its output unit,
One axle 4 is provided. Wheels 5 and 6 are attached to both ends of the axle 4. The mainspring-driven traveling toy has only these two wheels 5 and 6 as wheels.

The toy body 1 has a bottom plate 7 having a substantially flat shape, and a small projection 8 extending downward is formed on an outer surface, that is, a lower surface of the bottom plate 7. This projection 8
, Together with the two wheels 5 and 6, comes into contact with a surface F such as a floor surface. That is, in the present toy, the protrusion 8 and the two wheels 5, 6
Is a three-point contact.

As shown, the projections 8 are provided on the wheels 5,
It is preferable that the toy is far from the center line 6 and deviated from the center line X of the toy in the front-rear direction. It is desirable that the tip of the projection 8, that is, the contact end with the floor or the like be rounded.

Next, a preferred mainspring power unit 2 to be used will be described with reference to FIGS.

FIG. 3 is a horizontal sectional view of the mainspring driving device 2, FIG. 4 is a vertical sectional view taken along line AA of FIG. 3, and FIG.
FIG. 5 is a sectional view taken along line BB in FIG. 4.

The mainspring power unit 2 includes a pinion 12 provided on the axle 5 of a rear wheel 11 which is a driving wheel, a spur gear 13 meshing with the pinion 12, and a constant mesh with the spur gear 13 and one of the outer gears. The rotating shaft provided at the end is the frame 22
A winding pinion 15 movably supported by an elongated hole bearing 14 formed in a spring, a mainspring winding shaft 17 having a gear 16 meshed with the pinion 15, and a large spring provided on the mainspring winding shaft 17. A drive pinion 19 which is provided on a drive shaft 20 movably supported by long holes bearings 23 and 24 formed in frames 21 and 22 and is always meshed with the large gear 18; And a spur gear 25 provided integrally with the transmission pinion 19. The rear wheel 11 includes a plastic hub 11a and a tire 1 formed integrally with the hub 11a by insert molding or the like.
1b.

The spur gear 13 is provided with a pinion 26 integrally formed therewith and always meshing with the pinion 12. A step 30 having a larger diameter than the gear 16 is formed between the gear 16 of the mainspring winding shaft 17 and the large gear 18. A flange 31 is provided at an end of the step portion 30 on the side of the winding pinion 15. The flange 31 extends to a position where the flange 31 can be opposed to the winding pinion 15. The surface on the side is a winding pinion support surface 32. Therefore, this step 3
0, the flange 31 constitutes a winding pinion support member.

On the other hand, the winding pinion 15 is a small-diameter end 33 whose inner end is gradually reduced in diameter, and has a mushroom or top shape as a whole. In the section 33, the step section 30
Are rotatably supported on a winding pinion support surface 32 of the flange 31 of the first embodiment. In the mainspring power unit 2,
In this way, the winding pinion 15 has its small-diameter end 33
In the above, since it is rotatably supported by the winding pinion support surface 32 of the flange 31 of the step portion 30, the frictional force against the rotation is extremely reduced, and the loss of the driving torque generated by the return of the mainspring is reduced. Extremely reduced.

The flange 31 may be formed integrally with the gear 16 of the mainspring shaft 17 without providing the stepped portion 30, or may be formed so as to extend directly from the main shaft 17 of the mainspring. Is also good. Further, the winding pinion 15 may have a shape having no small diameter portion.

Next, the operation of the mainspring power unit 2 configured as described above will be described. By driving the rear wheel 11 in the direction opposite to the traveling, the spur gear 1 is driven via the axle 5.
3. Winding hoisting shaft 17 via hoisting pinion 15
Is rotated to wind up the mainspring. In this state, the winding pinion 15 is supported by the winding pinion support surface 32 of the flange 31 at the small-diameter end portion 33. The rotation of the spur gear 13 rotates the gear 16 of the mainspring winding shaft.
Pinion 1 for hoisting
Since the rotation directions of 5 and the flange 31 are the same, the rotation is rather promoted. Then, when the mainspring is wound up, the large gear 18 is rotated by the unwinding force of the mainspring. With this rotation, the winding pinion 15 moves along the long hole bearing 14 and becomes free. Therefore, the rotation of the mainspring hoisting shaft 17 supporting the large gear 18 is not transmitted to the hoisting pinion 15 side. The rotation of the large gear 18 is transmitted to the pinion 12 via the drive pinion 19, a spur gear 25 provided integrally with the drive pinion 19, and a pinion 26 provided integrally with the spur gear 13. As a result, the axle 5 is rotated in the forward drive direction. The function of transmitting the rotational force itself is the same as that of the conventional device of this type, but the torque cross by the winding pinion 15 when the force of the mainspring is transmitted from the large gear 18 to the axle 5 is extremely reduced.

The size of the flange 31 must be set so that it does not come off the flange 31 even when the winding pinion 15 moves in the elongated hole bearing 14 as described above.

As described above, the mainspring-driven traveling toy constructed as described above allows the wheels to come into contact with the floor surface and retreats the toy to wind the mainspring. However, at this time, since a rotational movement about the projection 8 is also applied, the vehicle can run in a random direction.

[Brief description of the drawings]

FIG. 1 is a side view of a mainspring driving toy according to an embodiment of the present invention.

FIG. 2 is a bottom view of the mainspring driving toy.

FIG. 3 is a horizontal sectional view of a mainspring power unit that is desirable to be used in the mainspring driving toy.

FIG. 4 is a longitudinal sectional view taken along line AA of FIG. 3;

FIG. 5 is a sectional view taken along line BB in FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Toy main body 2 Spring power unit 3 Gear box storage part 4 Axle 5 Wheel 6 Wheel 7 Bottom plate 8 Projection

Claims (6)

(57) [Scope of request for utility model registration] A power source is a gearbox that at least rotates a driving wheel backward, winds a mainspring through a gear mechanism, and utilizes the restoring force of the mainspring to drive the wheels forward. An axle driven by the gear box, in a mainspring driven toy,
Two wheels attached to both ends of the axle; and a projection protruding downward from the bottom of the toy body and provided together with the two wheels and in contact with a surface such as a floor.
A mainspring-driven traveling toy that travels by three-point contact between two wheels and the projection. 2. The mainspring-driven traveling toy according to claim 1, wherein the projection is provided at a position deviated from a center line of the toy in the front-rear direction. 3. The hoisting pinion, a mainspring hoist shaft having a gear meshing with the hoisting pinion, a large gear provided on the mainspring hoisting shaft,
A drive shaft provided with a drive pinion that always meshes with the large gear, a spur gear formed integrally with the drive pinion, and provided directly or indirectly on the mainspring winding shaft or the drive shaft, 3. The mainspring driven toy according to claim 1, further comprising: a support member having a support surface for supporting one end of the winding pinion. 4. The mainspring driven toy according to claim 3, wherein at least one end of the hoisting pinion is smaller than the diameter of the main body. 5. The mainspring-driven traveling toy according to claim 3, wherein the support surface of the hoisting pinion support member is an annular surface facing one end of the hoisting pinion. 6. The mainspring-driven traveling toy according to claim 3, wherein the support member is a step provided between the gear of the winding pinion and the large gear.