US 12,330,264 B2
Grinding machine tool with grinding disc braking structure
Bach Pangho Chen, Claremont, CA (US)
Assigned to X'POLE PRECISION TOOLS INC., Taoyuan (TW)
Filed by X'POLE PRECISION TOOLS INC., Taoyuan (TW)
Filed on Feb. 28, 2022, as Appl. No. 17/682,565.
Prior Publication US 2023/0271295 A1, Aug. 31, 2023
Int. Cl. B24B 47/26 (2006.01); B24B 23/03 (2006.01); B24B 55/00 (2006.01)
CPC B24B 47/26 (2013.01) [B24B 23/03 (2013.01); B24B 55/00 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A grinding machine tool, comprising a housing, a driving assembly disposed in the housing, a grinding disc driven by the driving assembly, a switch driving the driving assembly, and a pressing plate disposed on the housing, wherein the grinding disc comprises a grinding surface and a non-grinding surface, and when the pressing plate is operated, the pressing plate is in a first state that forces the switch to drive the driving assembly to rotate the grinding disc, and when the pressing plate is not operated, the pressing plate is in a second state that causes the switch to stop driving the driving assembly to rotate the grinding disc, the grinding machine tool is characterized in that:
the grinding machine tool comprises a grinding disc braking structure, wherein when the pressing plate is in the first state, the grinding disc braking structure is detached from the non-grinding surface, and causing a spacing between the grinding disc braking structure and the non-grinding surface, and when the pressing plate is in the second state, the grinding disc braking structure moves toward the non-grinding surface and contacts the grinding disc to stop the grinding disc from rotating, the grinding disc braking structure comprises at least one connecting rod connected with and pushed by the pressing plate, and a brake block disposed on the at least one connecting rod, the brake block is provided to contact the non-grinding surface.