Amusement devices: toys – Rolling or tumbling – Including intrinsic motive power means for propulsion
Patent
1988-10-18
1991-02-12
Hafer, Robert A.
Amusement devices: toys
Rolling or tumbling
Including intrinsic motive power means for propulsion
446456, 446484, 310 61, A63H 2900, A63H 3004, A63H 3300, H02K 132
Patent
active
049920715
DESCRIPTION:
BRIEF SUMMARY
RELEVANT TECHNICAL FIELD
This invention relates to a cooling device a driving motor in a traveling toy which is controlled by wireless for example, and more particularly to a cooling device for efficiently cooling a driving motor in a toy which produces heat while traveling.
BACKGROUND OF THE STATE OF THE ART
Conventionally, there has been a cooling means for a driving motor in a conventional traveling toy, which cooling device is constructed by forming an opening in a side wall of the driving motor. No specific device has been proposed for cooling the driving motor.
However, in a case where the traveling toy operated by wireless is driven to travel at high speed or on a rough road, a large load is applied on the driving motor, consequently to produce heat. The heat produced during traveling may cause breakage in the driving motor or deformation of a guide member of the motor. Thus, the conventional driving motor has suffered a disadvantage that it will be prevented from being operated at normal due to the production of heat.
DESCRIPTION OF THE INVENTION
The present invention is the fruit of the enthusiastic study made by the inventor of this invention to eliminate the drawbacks mentioned above and aimed at providing a cooling device for a driving motor in a traveling toy, which comprises a ventilating conduit having an air intake port which opens to the windward of a current of air flowing around the traveling toy in traveling and a radiating plate having its basal portion connected to the aforesaid driving motor, whereby the air is blown against the driving motor and radiating plate through the aforesaid ventilating conduit.
That is to say, according to this invention, the current of air generated around the toy in traveling is introduced inside the ventilating conduit through the air intake port and blown directly against the driving motor and the radiating plate which is attached at its basal portion to the peripheral portion of the driving motor, thereby to cool the driving motor.
Furthermore, the more speedily the traveling toy moves, the larger the heat release value becomes, while the quantity of the air flowing into the ventilating conduit is also increased with gaining the speed of the traveling toy in traveling. This is because the air intake port of the ventilating conduit open to the windward of the current of air produced around the toy in traveling. Namely, the efficiency of cooling the driving motor is improved with increasing the speed of the toy in traveling, thereby to effectively suppress the rise of temperature of the driving motor which produces heat.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a side elevation showing one embodiment invention;
FIG. 2 is a partially sectioned, enlarged perspective view of the same;
FIG. 3 is a diagram showing the rate of temperature rise of a driving motor relative to the travel time of a traveling toy; and
FIG. 4 is a side elevation showing another embodiment of this invention.
PREFERRED MODES FOR EXECUTING THE INVENTION
The present invention will be explained in detail hereinafter with reference to the accompanying drawings.
Reference numeral 1 denotes a body of a traveling toy such as a model car operated by wireless. The body 1 is provided on its rear portion with a driving motor 3 for rotating rear wheels 2.
The aforesaid driving motor 3 in this embodiment is provided on its upper side with a ventilating conduit 4 having an air intake port 4a open to the windward of a current of air which is produced around the body while the toy travels. The air intake port 4a in this embodiment is located above the rear portion of a roof 1a of the body 1.
On the other hand, beneath an air outlet port of the ventilating conduit 4, there is disposed a radiating plate 5 so as to hinder the current of air flowing out from the ventilating conduit 4. The radiating plate 5 has a plurality of air holes 5a and is attached to the driving motor 4 in such a state that the basal portion 5b of the radiating plate is in contact with the peripheral portion of the
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Hafer Robert A.
Muir D. Neal
Taiyo Kogyo Company, Ltd.
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