| 摘要 |
<p>PROBLEM TO BE SOLVED: To make front wheels unrotatable when a handcart is pushed with and by coaxially supporting an auxiliary wheels comprising two wheels to a vertical shaft provided on a combination rod combining front ends of two main rods, holding axles of rear wheels at each rear end of the main rods, holding a supporting shaft of a front wheel inside of both main rods, and retaining a ground contact surface of the front wheel higher than that of the auxiliary wheels. SOLUTION: An auxiliary member 20 is formed by combining front ends of two main rods 21 by a combination rod, and supporting a horizontal shaft 25 of auxiliary wheels 24 which comprises two wheels and can freely change the direction on a vertical shaft 23 provided vertically in the center of the combination rod. A bifurcated holding piece 26 held by an axle 6 is fixed to a rear end of the main rod 21. Leg carriers 33 are fixed on leg carrying stands which are symmetrically protruded on either side outside of the main rods 21. The main rods 21 are made to be horizontal by pinching the main rods 21 in supporting shafts 3 of a front wheel 4 of a tricycle 1 and by pinching the holding pieces 26 of rear ends of the main rods in the axles 6, and the main rods 21 are fixed to the supporting shafts 3 of the front wheel 4. The front wheel 4 is made to be a floating state, and the auxiliary wheels 24 and the rear wheels 7 are made to be contacted with the ground so that the front wheel 4 does not touch the ground, allowing the use as a handcart.</p> |
