Guide bar fastening device of chain saw

The invention provides a chain saw guide rod fastening device. The fastening force of the chain saw guide rod can be conveniently guaranteed, and the operability can be improved. The operating rod has: a first rod extending along the diameter direction of the nut member for fixing the guide rod, the bottom axis of the first rod is supported on the periphery of the nut member, the first rod can swing in a plane perpendicular to the rotation surface of the nut member, the second rod, the rod and the first rod are clamped in a manner that can slide along the axis, and when the axial length of the operating rod is shortened, The operating rod is stored in a storage portion formed along the radial direction of the nut member, and the outer end of the second rod rotates the nut member when the operating rod is separated from the storage portion and the axial length extends outward to the diameter of the nut member.

1 A chain saw guide bar fastening device, which is characterized in that the chain saw guide bar fastening device includes: a guide bar used to support the peripheral part of the saw chain, and one end of the guide bar is clamped between the chain saw body and the chain cover; The main body of the chain saw is fixed with a bolt member which is configured to pass through one end of the guide rod and the chain cover; The first rod is provided with a first rod and a second rod. The first rod extends along the diameter direction of the nut member. The bottom shaft of the first rod is supported at the periphery of the nut member, so that the first rod is connected with the nut structure. The second rod and the first rod are clamped in an axial sliding manner. The axial length of the operating rod can be adjusted by sliding the second rod. When the axial length of the operating rod is shortened, the operating rod is stored in a storage portion formed along the radial direction of the nut member. When the axial length extends outward from the receiving portion to the diameter of the nut member, the operating rod is separated and the nut member is rotated by fixing the outer end of the second rod.