Working machine and blade unit

A working machine, comprising:

• a prime mover;
• a conversion mechanism configured to move in response to rotation of the prime mover;
• a first blade connected to the conversion mechanism;
• a second blade overlapping with the first blade in an up-down direction;
• and
• a holding unit configured to hold the first blade and the second blade overlapping each other in the up-down direction,
• wherein
• the first blade is configured to reciprocate in a reciprocating direction perpendicular to the up-down direction with respect to the second blade when the conversion mechanism moves,
• the first blade includes a first elongated hole having a longitudinal direction along the reciprocating direction,
• the second blade includes a second elongated hole having a longitudinal direction along the reciprocating direction,
• the holding unit comprises:
• a holding part inserted in the first elongated hole of the first blade and the second elongated hole of the second blade;
• and
• an outer sleeve having a cylindrical shape and supported by the holding part such that the outer sleeve is rotatable around the holding part,
• wherein
• the first elongated hole of the first blade comprises a plurality of first elongated holes arranged along the reciprocating direction,
• the second elongated hole of the second blade comprises a plurality of second elongated holes arranged along the reciprocating direction,
• the plurality of first elongated holes comprises a first one-end elongated hole disposed at one end of the plurality of first elongated holes in the reciprocating direction,
• the plurality of second elongated holes comprises a second one-end elongated hole disposed at one end of the plurality of second elongated holes in the reciprocating direction, the second one-end elongated hole overlapping with the first one-end elongated hole in the up-down direction, and
• the holding part is inserted in the first one-end elongated hole and the second one-end elongated hole.

A blade unit to which a motion of a prime mover is transmitted via a conversion mechanism, the blade unit comprising:

• a first blade connected to the conversion mechanism;
• a second blade overlapping with the first blade in an up-down direction;
• and
• a holding unit configured to hold the first blade and the second blade overlapping each other in the up-down direction,
• wherein
• the first blade is configured to reciprocate in a reciprocating direction perpendicular to the up-down direction with respect to the second blade when the conversion mechanism moves in response to the motion of the prime mover,
• the first blade includes a first elongated hole having a longitudinal direction along the reciprocating direction,
• the second blade includes a second elongated hole having a longitudinal direction along the reciprocating direction,
• the holding unit comprises:
• a holding part inserted in the first elongated hole of the first blade and the second elongated hole of the second blade;
• and
• an outer sleeve having a cylindrical shape and supported by the holding part such that the outer sleeve is rotatable around the holding part,
• the holding part comprises an inner sleeve inserted in the outer sleeve, an outer circumference surface of the inner sleeve having a circular shape in cross-section, and
• a length of the outer sleeve in the up-down direction is shorter than a length of the inner sleeve in the up-down direction.

A blade unit to which a motion of a prime mover is transmitted via a conversion mechanism, the blade unit comprising:

• a first blade connected to the conversion mechanism;
• a second blade overlapping with the first blade in an up-down direction;
• and
• a holding unit configured to hold the first blade and the second blade overlapping each other in the up-down direction,
• wherein
• the first blade is configured to reciprocate in a reciprocating direction perpendicular to the up-down direction with respect to the second blade when the conversion mechanism moves in response to the motion of the prime mover,
• the first blade includes a first elongated hole having a longitudinal direction along the reciprocating direction,
• the second blade includes a second elongated hole having a longitudinal direction along the reciprocating direction,
• the holding unit comprises:
• a holding part inserted in the first elongated hole of the first blade and the second elongated hole of the second blade;
• and
• an outer sleeve having a cylindrical shape and supported by the holding part such that the outer sleeve is rotatable around the holding part,
• wherein
• the first elongated hole of the first blade comprises a plurality of first elongated holes arranged along the reciprocating direction,
• the second elongated hole of the second blade comprises a plurality of second elongated holes arranged along the reciprocating direction,
• the plurality of first elongated holes comprises a first one-end elongated hole disposed at one end of the plurality of first elongated holes in the reciprocating direction,
• the plurality of second elongated holes comprises a second one-end elongated hole disposed at one end of the plurality of second elongated holes in the reciprocating direction, the second one-end elongated hole overlapping with the first one-end elongated hole in the up-down direction, and
• the holding part is inserted in the first one-end elongated hole and the second one-end elongated hole.