Linear guide mechanism and hinge connections of power miter saw

A power miter saw comprising:

• a base;
• a table rotatably mounted on the base;
• a saw blade and motor mechanism configured to rotate a saw blade;
• and
• two linear guide mechanisms each connected to a rear support seat of the base using a lower positioning seat, and connected to the saw blade and motor mechanism using an upper connecting seat, thereby supporting the saw blade and motor mechanism;
• wherein the linear guide mechanism comprises:
• a first link comprising a bifurcated first end including two opposite first through holes each having a conic, outwardly expanded mouth;
• a bifurcated second end including two opposite second through holes;
• and a fastener driven through the second through holes and two through holes of the connecting seat to fasten the first link and the connecting seat together;
• a second link comprising a bifurcated first end having two opposite first through holes each having a bearing recess, and a bifurcated second end including two opposite second through holes;
• a biasing member disposed in two through holes of the lower positioning seat;
• two washers disposed at outer ends of the first through holes of the second link respectively;
• a cylindrical lining disposed in the first through holes of the second link;
• two bearings disposed at the bearing recesses respectively and engaging with two ends of the cylindrical lining respectively, each bearing being sandwiched between the washer and the cylindrical lining;
• and
• a pivot having a conic, outwardly expanded head and a receptacle at an end, the pivot driven through the first through holes of the first link, the washers, the bearings, the cylindrical lining, and the first through holes of the second link to receive a portion of a complimentary pivot in the receptacle so as to pivotably secure the first and second links together wherein the complimentary pivot has a conic, outwardly expanded head complimentarily secured to one conic, outwardly expanded mouth, and the conic, outwardly expanded head of the pivot is complimentarily secured to the other conic, outwardly expanded mouth;
• and a fastener driven through the second through holes of the second link, the biasing member, and the through holes of the lower positioning seat to fasten the second link and the lower positioning seat together.