Amusement devices: toys – Rolling or tumbling – Remotely controlled
Patent
1987-09-17
1990-01-09
Hafer, Robert A.
Amusement devices: toys
Rolling or tumbling
Remotely controlled
446444, 446465, 273 86B, A63H 1726
Patent
active
048925020
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a toy vehicle with its own motor drive, in particular for toy race track systems, with a pair of front wheels and a pair of rear wheels arranged on the undercarriage and a vehicle superstructure connected with the undercarriage.
It is known that undercarriages of toy vehicles are designed as one piece and, as a rule, solidly connected with the superstructure of the vehicle. In this way, the pairs of front and rear wheels supported in the undercarriage are rigidly kept in predetermined planes. When driving across winding or uneven segments of the trackway, the rigid arrangement of the front and rear wheels causes individual wheels to more or less lift from the segments of the trackway, which adversely affects the driving properties of the toy vehicle.
The objective of the invention is to implement measures for enhancing and maintaining the contact with the trackway of toy vehicles moving on trackways.
According to the invention, this objective is accomplished by two axially arranged parts of the undercarriage with a common plane of separation formed between the front and rear wheels, such parts being undisplaceably, but freely rotatably connected with each other by a connecting element, and in that one part of the undercarriage solidly engages the superstructure of the vehicle and the other part of the undercarriage is separated from the superstructure of the vehicle. In this way, the undercarriage of the vehicle can tilt over part of its length in either direction toward the one or other side and distortions of the raceway can be compensated. The swinging suspension of one pair of wheels, for example when driving through steep curves with an angle of gradient changing in the driving direction, prevents forces of torsion from adversely acting on the undercarriage or superstructure of the vehicle and assures safe adhesion of both pairs of wheels to the race track. In this way, steering and driving forces are safely transmittable to the segments of the raceway and good track-keeping is assured.
According to a preferred embodiment, the two parts of the undercarriage are freely rotatably connected with one another by means of an axle, which is fixed on the one part of the undercarriage and freely rotatable on the other part of the undercarriage while the axle permits free rotation between the front and rear parts of the undercarriage the connection prohibits displacement therebetween in the axial direction. Usefully, the axle is fixed on the rearward part of the undercarriage, which may be solidly connected with the superstructure of the vehicle, and freely engaging a receiving sleeve arranged on the front part of the undercarriage.
So as to accomplish in a simple manner an axial fixation of the swinging part of the undercarriage, the free end of the axle has a collar which, as an abutment, undisplaceably supports the rotating part of the undercarriage between itself and the rearward part of the undercarriage. Finally, provision is made to fix the axle on the one part of the undercarriage, in particular the rearward part, by means of screwed clamping rings, and to support the axle freely rotatable on the other part of the undercarriage by means of another clamping ring. The latter may embrace the axle with a small amount of clearance so as to permit smooth dip-nosing of the axle.
BRIEF DESCRIPTION OF THE DRAWING
The invention is explained in greater detail with the help of an embodiment shown by way of example in the drawing, in which:
FIG. 1 shows a bottom view of a toy vehicle;
FIG. 2 shows a front view of a toy vehicle with front wheels tilted toward one side; and
FIG. 3 shows a front view of a toy vehicle with front wheels tilted toward the other side.
In FIG. 1, reference numeral 1 denotes the body of a toy vehicle, which may have any desired design. An undercarriage part 2 is solidly connected with the body 1 and receives the pair of rear wheels 3 of the vehicle, which is drivable by an electric motor (not shown) by way of a shaft 4 supported in the part 2 of the undercarriage,
REFERENCES:
patent: 2216497 (1940-10-01), McHenry
patent: 2380174 (1945-07-01), Haselton
patent: 2703534 (1955-03-01), Copeland
patent: 3016024 (1962-01-01), Silver
patent: 3083500 (1963-04-01), Balthazor
patent: 3162978 (1964-12-01), Balthazor
patent: 3205616 (1985-09-01), Nisperly
patent: 3407533 (1968-10-01), Hughes
Hafer Robert A.
Rimell Sam
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