초록 ▼

This toy car has a selector on its sides for use, without picking the vehicle up, in selecting operation: (1) as a conventional electrically powered toy vehicle, at at least one speed, on a flat surface; (2) as an electrically powered climbing toy with particularly advantageous weight distribution,

This toy car has a selector on its sides for use, without picking the vehicle up, in selecting operation: (1) as a conventional electrically powered toy vehicle, at at least one speed, on a flat surface; (2) as an electrically powered climbing toy with particularly advantageous weight distribution, at at least one reduced speed with greater torque, on a steep and/or irregular surface; or (3) as an unpowered free-rolling toy vehicle. For climbing operation the car\s battery, motor, etc. are in a symmetrical, compact, balanced, low geometry－about level with the wheels. With speed-reduction and selector parts they fill the toy\s housing. The reduction mechanism has front-and-rear duplicate gearing: at each end, two worms that are both powered from the motor but through different reductions, and a worm gear shiftable between engagement with either worm by sliding on a square axle. Wheels are mounted to and driven by the axle ends. The worm gear also shifts to a point between the worms, engaged with neither, to give a “rolling neutral”. The shifting mechanism sets electrical contacts to power the car only if the worm gear is engaged with one of the worms.

대표청구항 ▼

A plural-speed miniature wheeled toy vehicle for use with electrical battery means that comprise an elongated dry-cell battery having a longitudinal axis, and for both generally conventional-toy operation at at least one speed on a generally flat surface and climbing-toy operation at at least one re

A plural-speed miniature wheeled toy vehicle for use with electrical battery means that comprise an elongated dry-cell battery having a longitudinal axis, and for both generally conventional-toy operation at at least one speed on a generally flat surface and climbing-toy operation at at least one reduced speed with greater torque on a steep and/or irregular surface; said vehicle having, when such battery means are in use therewith, major weight components positioned to provide a generally symmetrical, compact, balanced and relatively low arrangement; said vehicle comprising: a chassis having walls defining an interior compartment; front wheel means and rear wheel means mounted to the chassis for rolling rotation about respective mutually parallel but spaced-apart front and rear axes; means mounted in the interior compartment to releasably support such electrical battery means in the compartment with such longitudinal axis of such battery means extending substantially front-to-back of the vehicle and extending at least substantially the full distance between the front and rear axes; an electric motor mounted in the interior compartment, and having a driveshaft; means on the chassis for electrically connecting such battery means, when supported in the supporting means, to the motor, so that such battery means power the motor driveshaft; a speed-reduction mechanism mounted in the interior compartment and connecting the motor driveshaft to both said front and said rear wheel means to transmit rotation from the driveshaft to the wheel means with a mechanical advantage; and means associated with the speed-reduction mechanism for selecting among a plurality of values of the mechanical advantage, including at least one value providing such generally conventional-toy operation for generally flat surfaces and at least one other value providing such climbing-toy operation with greater torque for steep and/or irregular surfaces; at least major portions of the motor and of such battery means, when such battery means are supported in the supporting means, being at approximately the same height as the front and rear wheel means, to particularly enhance such climbing-toy operation at said other value on such steep and/or irregular surfaces; and the motor, the speed-reduction mechanism, the selecting means, and such battery means, when such battery means are supported in the supporting means, substantially fully occupying the interior compartment.