Patent ID: 6840144

Claim:
A quick-detachable blade guard mounting structure comprising: a mounting frame for supporting a cutting blade; a holding down member provided at one end of said mounting frame and defining with said mounting frame a gap, said holding down member comprising a locating hole; a blade guard holder member positioned in said gap between said mounting frame and said holding down member, said blade guard holder member having a mounting hole and at least one stop portion in a lower part thereof; the holding down member further comprising at least one stop device that positions the at least one stop portion of said blade guard holder member in said gap in a predetermined position where the mounting hole of said blade guard holder member is axially aligned with the locating hole of said holding down member; a lever pivoted to an outer side of said holding down member and moved relative to said holding down member between a first position and a second position, said lever having a first stop portion, which is aligned with the locating hole of said holding down member when said lever is moved to said first position, and a second stop portion, which is aligned with the locating hole of said holding down member when said lever is moved to said second position; a locking member is provided between said lever and said holding down member, said locking member having a shank and a head at one end of said shank, said shank being engaged into said locating hole of said holding down member when said head is stopped at said first stop portion of said lever, said shank being engaged into said mounting hole of said blade guard holder member when said head stopped at said second stop portion of said lever; and a spring member provided between said holding down member and said lever and said spring member pushes the head of said locking member towards said lever.