| 摘要 |
A box cutter structure having a shell (10, fig 1) and a blade carrier (20, fig 3) slidably disposed in the shell. A pushing assembly (30, fig 1), disposed on the shell, is movable from a locking position to a releasing position. In the locking position, a blocking portion 32 of the pushing assembly is prevented from moving by a restrictive portion 12 on the shell. In the releasing position the blocking portion is free to move, such that a pushing portion 31 of the pushing assembly engages part of the blade carrier and slides the blade out of the blade projecting end 11 of the shell. The blocking member may be attached to a pressing member 34 on the pushing assembly, whereas the pushing member may be attached to a carrying body 33 on the pushing assembly. Alternatively the pressing member may contain both the pushing and blocking portions. An elastic member 50 may bias the blade into its withdrawn configuration inside the shell. |
