JPH0248000Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a pullback spring winding type drive device for a traveling toy that can freely switch the traveling toy between front wheel drive and rear wheel drive.

Traveling toys equipped with pullback spring winding drive devices are popular among a wide range of age groups, from infants to adults, because they allow for a variety of interesting play activities.

However, conventional pull-back type traveling toys like this are generally rear-wheel drive, and although they are fun in that they can lift the front wheels and do wheelies, they tend to fall over when the drive device is powered up. On the other hand, if you use front-wheel drive, you won't have the fun of doing a wheelie, but it will have excellent straight-line performance and will not easily fall over even when the drive system is powered up. There is an advantage. Therefore, it would be even more interesting if it were possible to selectively switch between rear wheel drive and front wheel drive as appropriate.

The present invention has been developed by focusing on these conventional points, and provides an interesting pull-back spring-winding driving toy drive device that can be switched between front-wheel drive and rear-wheel drive as appropriate with a single drive device. It is intended to.

Specifically, the present invention removably incorporates an intermediate gear for switching front wheel drive and rear wheel drive into a group of winding and driving gears that selectively link the mainspring shaft and the drive axle. By arranging bearing parts for front wheel drive and rear wheel drive in parallel in the housing of the drive device, and allowing the drive axle to be selectively and rotatably supported by these bearing parts, it is possible to drive the front wheel drive or the rear wheel drive. It is an object of the present invention to provide a drive device for a traveling toy that can be switched.

Hereinafter, one embodiment of the present invention will be described based on FIGS. 1 to 6.

FIG. 1 is a side view of the main parts of the drive device in which a detachable intermediate gear for switching between front wheel drive and rear wheel drive is incorporated, and FIG. 2 is a plan view of the main parts. In these drawings, reference numeral 1 denotes a housing of a drive device, which rotatably supports a mainspring shaft 2.
Reference numeral 4 denotes a large gear rotatably attached to the mainspring shaft 2, and the winding end of the mainspring 3 is attached to the center of one side, and a small gear 5 is integrally formed on the other side. 6 is a drive axle with wheels 7 fitted on both ends, and housing 1
Bearing portions 8a and 8b for front wheel drive and rear wheel drive, which selectively and rotatably support the drive axle 6, are arranged in parallel. be done. Reference numeral 9 denotes an axle gear pivotally attached to the drive axle 6, which meshes with the intermediate gear 10 for switching between front and rear wheels.

The intermediate gear 10 is rotatably and detachably attached to the housing 1. Reference numeral 12 denotes an idle gear that meshes with the intermediate gear 10 and the first idle gear 13. The first floating gear 13 is connected to the housing 1
is freely supported on the side wall of the idler gear 12 by an elongated hole 14 formed in an arc shape around the axis of the idler gear 12,
It meshes with the small gear 5 only when the drive device is winding up. A second floating gear 15 meshes with the large gear 4 and the idle gear 12, and moves in a circular arc shape centered on the axis of the large gear 4, and meshes with the idle gear 12 only during driving. Among these gears, the axle gear 9, the intermediate gear 10, the idle gear 12, the first idle gear 13, and the pinion gear 5 are meshed and interlocked when the drive device is hoisted to form a hoisting gear group (the third (see figure),
Axle gear 9, intermediate gear 10, idle gear 12, second
The floating gear 15 and the large gear 4 engage in meshing relationship during driving to form a drive gear group (see FIG. 4).
Further, the housing 1 is adapted to be attached to the chassis of a traveling toy either at the front or rear, and a fixing portion for this purpose is formed on the chassis side, although not shown. Therefore, the drive axle 6 is supported on the front wheel drive bearing part 8a, the intermediate gear 10 is installed between the axle gear 9 and the idler gear 12, and the drive axle 6 is located on the front side of the chassis. 1 attached to the chassis, when the traveling toy is pulled backwards with the front wheels 7 in pressure contact with the running surface, the hoisting gear group 9, 1
0, 12, 13, and 5 operate to wind up and accumulate the mainspring 3 (see Figure 3). Then, when the running toy is placed on the running surface, the mainspring 3 is rewound.
The driving gear groups 4, 15, 12, 10, and 9 are operated to move the traveling toy forward. (See Fig. 4) That is, front wheel drive is performed.

On the other hand, when the intermediate gear 10 is removed, the drive axle 6 is supported on the rear wheel drive bearing part 8b, and the axle gear 9 and the idler gear 12 are directly engaged, the hoisting gear group of the drive device becomes the axle gear 9, Idle gear 12, first
The driving gear group of the power unit is composed of an axle gear 9, an idler gear 12, a second idler gear 15, and a large gear 4 (see FIG. 5). (See Figure 6). Therefore, the drive device set in this state is connected to the drive axle 6.
When the housing 1 is attached to the chassis with the housing 1 positioned at the front of the chassis, the gear group rotates in the opposite direction to that described above, resulting in a rear-wheel-drive traveling toy that moves backward and forwards. In this way, it is possible to easily switch between front wheel drive and rear wheel drive by simply attaching and detaching the intermediate gear 10, changing the position of the drive axle 6, and reversing the front and rear positions of the housing 1 to the chassis, allowing for an interesting way of enjoying the vehicle. This is the result.

Incidentally, the above-mentioned switching between front and rear wheel drive can be performed at the manufacturing process stage or according to the customer's preference.

As explained above, the drive device for a traveling toy of the present invention has a structure in which the intermediate gear for switching between the front and rear wheels is removably provided, and the drive axle is selectively supported on the respective bearings for the front and rear wheels. Therefore, it is possible to easily switch between front and rear wheel drive by simply changing the assembly without changing the shape of the components of the drive device, and you can enjoy the characteristics of both front and rear wheel drive in one running toy. This has the effect of providing a very interesting running toy.

[Brief explanation of the drawing]

FIG. 1 is a side view of the main part of the drive device with the intermediate gear for front and rear wheel drive switching incorporated, FIG. 2 is a plan view of the main part, and FIGS. 3 and 4 are:
A configuration diagram of the gear group in the case of front wheel drive, and the fifth
6 and 6 are configuration diagrams of a gear group in the case of rear wheel drive. 1...Housing, 2...Spring shaft, 6...
Drive axle, 8a, 8b... Bearing portion, 10... Intermediate gear, 9, 10, 12, 13, 5... Winding gear group, 9, 10, 12, 15, 4... Drive gear group.

Claims (1)

[Claims for Utility Model Registration] A winding and driving gear group that selectively connects a mainspring shaft and a drive axle is provided, and the following requirements are provided to enable switching between front-wheel drive and rear-wheel drive. A pullback spring winding drive device for traveling toys. (a) An intermediate gear for switching between front wheel drive and rear wheel drive that can be detachably incorporated into the hoisting and driving gear groups is provided. (b) Bearing portions for front wheel drive and rear wheel drive are arranged side by side in the housing of the drive device, and the drive axle is selectively and rotatably supported on the bearing portions.