The present invention relates to the structure of a sawdust discharge port of a chain saw.
Generally, a cover member for the body of a chain saw is made relatively thin as a whole for the purpose of causing a decrease in weight of the chain saw. For this reason, it is necessary, with regard to a side wall thereof particularly at the side of sawing section, to reinforce its lower end edge portion constituting a sawdust discharge port and thereby prevent the side wall from being broken or damaged. To this end, the side wall was conventionally reinforced by being made thicker at its lower end portion in such a manner that its outer surface is allowed to protrude outwardly. By so doing, the inner surface of the side wall is made flat at its lower end portion to prevent a turbulency from occurring in the fluid discharged, thereby making the sawdust discharge smooth. This structure, however, had drawbacks in that, during the sawing operation, the above-mentioned outward protrusion of the side wall at the lower end portion thereof hinders the performance of the operations, or sawdust is very likely to be widely scattered into outside the body of the chain saw.