| 摘要 |
A folding mechanism operatable between an extended position and a received position is disclosed to include a rack for supporting thereon a table machine, a pair of first legs and a pair of second legs respectively pivoted to the rack for supporting the rack above the floor, two first links respectively pivoted to the rack, two sliding units slidably and respectively sleeved onto the first legs and pivotally and respectively connected with the first links, and two second links respectively pivoted to the sliding units and the second legs. The first and second links and the sliding units are moved with the second legs toward the first legs upon folding the folding mechanism from the extended position to the received position, and at the same time the sliding units are slid along the first legs, assuring safety and stability of the folding action. |
| 主权项 |
1. A folding mechanism for supporting thereon a table machine, the folding mechanism being alternatively settable between an extended position and a received position, the folding mechanism comprising:
a rack for mounting of the table machine, the rack having a front end, a rear end, and a pair of first pivot points, a pair of second pivot points and a pair of third pivot points, which are orderly and spacedly arranged between the front end and the rear end; a pair of first legs each having a first end pivoted to one of the first pivot points of the rack, and a second end configured having a bearing portion and a stop portion for supporting on a floor; a pair of second legs each having a first end pivoted to one of the second pivot points of the rack, and a second end rotatably mounted with a wheel; a pair of first links each having a first end pivoted to one of the third pivot points of the rack, and a second end; a pair of sliding units each slidably sleeved onto one of the first legs and provided with a first pivot point pivotally connected with the second end of one of the first links, and a second pivot point; and a pair of second links each having a first end pivoted to the second pivot point of one of the sliding units, and a second end pivoted to one of the second legs; wherein when the folding mechanism is set in the extended position, the first legs and the second legs are kept in a crossed manner to hold the rack in a horizontal posture substantially; when the folding mechanism is moved from the extended position toward the received position, the first and second links and the sliding units are moved with the second legs toward the first legs; when the folding mechanism is set in the received position, the wheels are kept adjacent to the bearing portions of the first legs and the rack is kept in a vertical posture substantially. |
