| 摘要 |
A folding knife has dual operational mode. In a first modality, the knife is opened and closed manually. In a second modality, the knife is fully automatic. The user is able to switch between modalities with manipulation of a slider bar in the space between handle halves. The user is able to switch from the automatic mode into the manual mode, and vice versa, only when the blade is in the open position. A torsion spring around the pivot shaft connects the blade to the handle. The spring drives the blade open in the automatic operational mode and a switch mechanism is used to alternately engage and disengaged the spring from the blade. One end of the spring is fixed to the handle and the other end interacts with a groove in the tang of the blade when the switch mechanism is in the automatic position. A spacer bar that is part of the switch mechanism has a surface that is operable to laterally displace the spring relative to the blade groove when the switch is in the manual position. The knife also has dual modes of closed-stop functionality. |
