| 摘要 |
The present invention discloses an improved wheel structure of a handcart of the type having a body that is provided with a handle grip formed at one side thereof and a plurality of support plates disposed in such a manner as to be vertically stacked on one another, a wheel axially mounted to a support member in such a manner as to roll at four corners of the lower portion of the body, the support member having a bolt and a nut mounted on the top side thereof, and a tubular rod body connected at the lower side thereof to the bolt and connected at the upper side thereof to the body, the improvement wherein the tubular rod body has a nut receiving recess that is upwardly formed at the bottom surface thereof to receive the nut, such that a contact area between the rod body and the nut becomes large.
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