Patent ID: 7028799

Claim:
A frame of an electric cart for a person to ride on, comprising a front part; a rear part detachably connected to the front part; a locating seat member secured on a rear end of the front part; the locating seat member having a fitting portion, which is formed with a through hole, a gap above and communicating with the through hole, and a slope adjacent to the gap; a connecting seat member secured on a front end of the rear part for engaging the locating seat member to join the rear part to the front part; the connecting seat member having first and second lateral wall portions opposing each other; a first engaging pin passed through the lateral wall portions of the connecting seat member; the engaging pin having: (1) a pressed end portion at a first end thereof, which is passed through the first lateral wall portion; (2) a thin portion next to the pressed end portion; the thin portion being narrower than the gap of the fitting portion of the locating seat member; (3) a cone-shaped portion next to the thin portion; and (4) a stopped portion next to the cone-shaped portion; the stopped portion being wider than the gap, and narrower than the through hole of the locating seat member; and a spring connected to the engaging pin for biasing the pressed end portion of the pin further away from the second wall portion; the engaging pin being able to be pressed against the slope of the locating seat member at the cone-shaped portion thereof while the connecting seat member is being fitted onto the locating member such that the pin will be made to move in such direction as to compress the spring, and such that the pin will be passed through the gap and into the through hole of the locating seat member from the thin portion thereof, allowing the stopped portion of the pin to be through the through hole to engage the locating seat member for securing the connecting seat member to the locating seat member.