Anti-kickback device for a table saw machine

摘要

An anti-kickback device includes a riving knife mounted rearwardly of a saw blade of a table saw machine and having a retaining hole. An elongate mount has a cavity and an insert groove to receive the plate body such that the retaining hole is located in the cavity. A fastening unit includes a post which is received in the cavity, which straddles a top surface of the knife, and which has a radial bore registered with the retaining hole, a detent body disposed in the radial bore and movable to extend into or to be clear of the retaining hole to thereby permit the mount to be secured to or detached from the knife, a tubular actuator which has an inner cam surface configured to move the detent body, and an operating member manually operable to move the actuator.

主权项

1. An anti-kickback device for a table saw machine which includes a table top having an opening that extends along a cutting path in a longitudinal direction, and a saw blade mounted under the table top and extending through the opening for cutting a workpiece along the cutting path, said anti-kickback device comprising:
a riving knife adapted to be mounted rearwardly of the saw blade along the cutting path, and having a plate body which includes a height-adjustable segment and a splitting segment that are disposed opposite to each other in an upright direction, said splitting segment having two major surfaces opposite to each other in a transverse direction, and a top surface which interconnects said major surfaces, said splitting segment having a retaining hole which extends through said major surfaces in the transverse direction; an elongate mount having upper and lower surfaces opposite to each other in the upright direction, said upper surface having a cavity which extends towards said lower surface to form an inner tubular wall and terminates at a seat wall, said lower surface having an insert groove which extends upwardly through said seat wall and which extends rearwardly such that said splitting segment is inserted into said insert groove and said retaining hole is located in said cavity; and a fastening unit including a post having a base portion which is received in said cavity, which cooperates with said inner tubular wall to define a surrounding route, and which straddles said top surface of said splitting segment, and a shank portion which extends upwardly of said cavity, said base portion having a radial bore that extends radially and that is registered with said retaining hole, a detent body disposed in said radial bore and movable between a retained position, where said detent body is engaged with said retaining hole, and a releasing position, where said detent body is clear of said retaining hole to thereby permit said elongate mount and said fastening unit to be detached from said splitting segment, a tubular actuator sleeved on said base portion and having an inner cam surface which is configured such that, when said tubular actuator is moved along the surrounding route from an upper position to a lower position, said inner cam surface moves said detent body from the releasing position to the retained position, and an operating member coupled with said shank portion so as to move said tubular actuator between the upper and lower positions.