Combustion type power tool having buffer piece

A combustion-type power tool comprising:

• a housing;
• a cylinder disposed in the housing;
• a piston disposed in the cylinder and movable in an axial direction;
• a cylinder head disposed at an end of the housing and having a wall portion extending in a direction perpendicular to the axial direction, the wall portion having an opening;
• a motor disposed at the cylinder head and comprising a motor body and a drive shaft extending from the motor body into a combustion chamber through the opening of the wall portion of the cylinder head;
• a fan connected to the drive shaft to be rotatable within the combustion chamber;
• and
• an elastic member disposed at the opening of the wall portion and comprising a sleeve portion extending in the axial direction and having a through-hole through which the drive shaft extends, a first flange portion and a second flange portion both extending from the sleeve portion in a direction perpendicular to the axial direction;
• wherein the wall portion of the cylinder head is located between the first and the second flange portions so that the elastic member is movable in the axial direction.

A combustion-type power tool comprising:

• a housing;
• a cylinder disposed in the housing;
• a piston disposed in the cylinder and movable in an axial direction;
• a cylinder head disposed at an end of the housing and having a wall portion extending in a direction perpendicular to the axial direction, the wall portion having an opening;
• a motor disposed at the cylinder head and comprising a motor body and a drive shaft extending from the motor body into a combustion chamber through the opening of the wall portion of the cylinder head;
• a fan connected to the drive shaft to be rotatable within the combustion chamber;
• and
• a buffer piece disposed at the opening of the wall portion and comprising an elastic member and an annular shaped washer, the elastic member having a sleeve portion extending in the axial direction and having a through-hole through which the drive shaft extends and an annular recess, the washer being disposed in the annular recess of the elastic member.