JPS632064Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a drive wheel device for a relatively large-sized vehicle play equipment for children to ride on and run.

Conventionally, this type of driving wheel device fixes the final gear and the driving wheel to the driven shaft by passing the driven shaft through the shaft hole of the final gear of the reduction mechanism and the shaft hole of the driving wheel. The rotation from the driven shaft was once transmitted to the driven shaft, and the rotation from this driven shaft was transmitted to the drive wheels.

In some cases, the rotation from the final gear of the reduction mechanism, such as a worm wheel meshed with the worm gear in the reduction gear housing, is transmitted to the drive wheels, such as the drive wheel, via a driven shaft such as the final reduction shaft. (e.g. Jikko 40)
-12266 Publication), and those in which the rotation from the final gear of a reduction mechanism such as a wheel gear or intermediate gear linked to a motor gear or engine is transmitted to the driving wheels such as wheels or rear wheels via an axle ( For example, Jikko 49-
35676, Utility Model Publication No. 51-1919), etc. were proposed.

However, since the rotation from the final gear of the reduction mechanism is indirectly transmitted to the drive wheels via the driven shaft, not only is the rotation not transmitted smoothly from the reduction mechanism to the drive wheels. However, the means for fixing the final gear and the drive wheel was difficult and unreliable, and the structure was complicated, making it unsuitable for mass production.

This idea was devised to solve the above-mentioned problems, and a plurality of intermediate gears are meshed in a multi-stage manner between the small gear of the motor and the final gear with a shaft hole inside the box. A deceleration mechanism is installed, and the outer boss of the final gear of this deceleration mechanism is provided with an approximately half-cylindrical fitting part, while the inner boss of the drive wheel with a shaft hole outside the box body is provided with an approximately semicircular cross-section. A fitting hole is provided in the drive wheel, and a fitting hole in the drive wheel is fitted in the fitting part of the final gear, so that the connection from the final gear of the reduction mechanism is made without going through the driven shaft passed through these shaft holes. By transmitting the rotation directly to the drive wheel, the rotation from the reduction mechanism to the drive wheel can be smoothly transmitted, and the means for fixing the final gear and the drive wheel can be made extremely easy and reliable. To provide a drive wheel device for a vehicle and play equipment which is optimized for mass production by simplifying the structure.

An embodiment of this invention will be described below with reference to the drawings.

As shown in the figure, a small gear 4 at the inner end of the drive shaft of a motor 3 and a through hole between the left side plate 5 and a small gear 4 at the inner end of the driving shaft of the motor 3 are inserted from the outside of the right side plate 2 in a rectangular cylindrical box body 1 with open upper and lower surfaces. A shaft hole 8 in which an outer boss 7 is rotatably supported.
A speed reduction mechanism 11 comprising a plurality of intermediate gears 10 meshed in a multi-stage manner is installed between the final gear 9 and the final gear 9.

A half-cylindrical fitting part 12 is provided on the outer boss 7 of the final gear 9 of such a reduction mechanism 11, protruding in the cylindrical direction,
On the other hand, a fitting hole 16 having a substantially semicircular cross section is formed in the inner boss 15 of the drive wheel 14 with the shaft hole 13 outside the box body 1, and the fitting hole 16 of the drive wheel 14 is used to fit the final gear 9. 12 and passed through the shaft hole 8 of the final gear 9, the shaft hole 13 of the drive wheel 14, and the shaft hole 17 of the right side plate 2 of the box body 1. The rotation from the final gear 9 of 11 is directly transmitted to the drive wheel 14.

Since this device is configured as described above, when the motor 3 is operated, the small gear 4 of the driving shaft is rotated, and then the rotation of the driving shaft is sequentially decelerated by each intermediate gear 10 of the deceleration mechanism 11, and then By transmitting the rotation of the final gear 9 of the mechanism 11 directly to the drive wheel 14 without passing through the driven shaft 18, the rotation of the final gear 9 of the mechanism 11 is transmitted directly to the drive wheel 14 without passing through the driven shaft 18. Rotation is indirectly transmitted to the drive wheels via the final reduction shaft, or rotation from wheel gears or intermediary gears linked to motor gears or engines is transmitted to the wheels or rear wheels via the axle. Rotation is smoothly transmitted from the speed reduction mechanism 11 to the drive wheels 14 without any indirect transmission.

In addition, the fitting portion 12 of the final gear 9 of the reduction mechanism 11
It is only necessary to fit the fitting hole 16 of the drive wheel 14 into the shaft hole 16 of the drive wheel 14, and to pass the driven shaft 18 through these shaft holes 8, 13. The means for fixing the final gear 9 and the driving wheel 14 is extremely easy and reliable, and the structure can be significantly simplified without having to fix the final gear and the driving wheel to the driven shaft by penetrating the driven shaft. It is ideal for mass production and can be provided at low cost.

As explained above, according to this invention, the rotation is transmitted smoothly from the reduction mechanism to the drive wheel, and the means for fixing the final gear and drive wheel is extremely easy and reliable, and is ideal for mass production. Various effects such as being able to provide the product at a low cost can be obtained.

[Brief explanation of the drawing]

The drawing shows one embodiment of this invention.
The figure is a sectional view of a main part, and FIG. 2 is an exploded perspective view of a drive wheel and a final gear. 1...Box body, 2...Right side plate, 3...Motor,
4... Small gear, 5... Left side plate, 6... Through hole, 7
...Outer boss, 8, 13, 17...Shaft hole, 9...
Final gear, 10... Intermediate gear, 11... Reduction mechanism, 12... Fitting portion, 14... Drive wheel, 15...
Inner boss, 16...fitting hole, 18...driven shaft.

Claims (1)

[Scope of utility model registration request] A reduction mechanism in which a plurality of intermediate gears are meshed in a multi-stage manner between the small gear of the motor and the final gear with a shaft hole is installed inside the box, and a roughly half-split cylinder is attached to the outer boss of the final gear of this reduction mechanism. On the other hand, a fitting hole with a substantially semicircular cross section is provided in the inner boss of the drive wheel with a shaft hole outside the box, and the fitting hole of the drive wheel is connected to the fitting part of the final gear. A driving wheel of a ride-based play equipment, characterized in that the rotation from the final gear of the speed reduction mechanism is directly transmitted to the driving wheel without going through a driven shaft passed through these shaft holes. Device.