Patent ID: 8813366

Claim:
A folding knife with an assisted opening function, comprising: a blade; a first housing having a first end pivotally connected to an end of the blade, the first housing being formed with an arcuate guide groove and at least one slot, the arcuate guide groove being passed through by a stud of the blade, wherein the stud is located at a first end of the arcuate guide groove when the blade is received in the first housing, and is located at a second end of the arcuate guide groove when the blade is fully exposed from the first housing, the at least one slot being adjacent to an edge of the first housing opposite to the position that the blade can be rotated out of the first housing, the at least one slot comprising a first slot, and the first slot having a first end extending toward the first end of the first housing and a second end extending toward a second end of the first housing; a pushing element located on a first lateral surface of the first housing, the pushing element having an end exposed from the first housing to form a pushing portion, the pushing element being protrudingly provided with a sliding post, the sliding post passing through and being movable in the first slot; a pressing element located on a second lateral surface of the first housing and connected to the pushing element so as to be driven by the pushing element, the pressing element having an end extended with a pressing plate, the pressing plate forming an angle with the pressing element, wherein when the stud is located at the first end of the arcuate guide groove and the sliding post is pressed against the first end of the first slot, the pressing plate is not in contact with the stud, and when the sliding post is moved toward the second end of the first slot, the pressing plate presses against the stud and pushes the stud toward the second end of the arcuate guide groove until the blade is driven by a resilient member to move the stud to the second end of the arcuate guide groove; and a second housing assembled to the second lateral surface of the first housing to cover the pressing element.