Patent ID: 6283002
Filing Date: 2001-09-04
Classification: B23D,Y10T

Abstract:
A table saw apparatus comprising:a table having left and right sides, front and rear walls, and a top plate on top of said front and rear walls, said top plate having a slot extending in a direction from said front wall toward said rear wall;a movable saw blade disposed movably underneath said top plate and extendable into said slot, said saw blade having a first shaft which extends sidewise therefrom relative to said table;a motor disposed underneath said top plate and having a second shaft which extends sidewise therefrom relative to said table;a belt-pulley mechanism interconnecting said first and second shafts for synchronizing rotations of said first and second shaft;a bracket mounted pivotally on said table between said front and rear walls for turning forward or rearward, said saw frame being disposed above said motor and including a tubular seat which is movable downward when said saw frame turns forward and which is movable upward when said saw frame turns rearward, said tubular seat holding rotatable said first shaft thereinside;a connecting unit interconnecting said tubular seat and said motor so that said motor is moved along with said tubular seat; anda height adjustment unit mounted on one of said front and rear walls and including a first rotary drive member extending in a direction parallel to a line extending from said front wall to said rear wall, said first rotary drive member being connected drivingly to said saw frame so as to move said saw frame forward or rearward,wherein said height adjustment unit is mounted on said front wall and further includes a worm mounted on said first rotary drive member, said saw frame further including an arm which projects radially and forwardly from said tubular seat and which has a front pivot end mounted pivotally on said table at said front wall via a pivot member and about which said saw frame is turned, and a sector gear formed on a bottom of said arm below said pivot member, said sector gear engaging said worm so that said tubular seat is turned downward along with a forward movement of said sector gear, and is turned upward along with a rearward movement of said sector gear when said worm is turned,wherein said connecting unit includes an upper plate formed with an upper hole, a lower plate formed with a lower hole, and a screw rod coupling rigidly said upper and lower plates, said tubular seat having a sleeve thereon, said sleeve being received fittingly in said upper hole, said second shaft being received in said lower hole, said lower plates being connected securely to said motor.