Spindle lock for power tool

A power tool comprising:

• a housing;
• a motor supported within the housing;
• an output spindle rotatably supported relative to the housing about an axis, the motor operable to drive the output spindle about the axis;
• a gearcase coupled to the housing;
• a gearcase ring positioned within the gearcase;
• and
• a spindle lock assembly between the motor and the output spindle, the spindle lock assembly being adjustable between an unlocked state in which the output spindle is rotatable relative to the gearcase and the housing about the axis and a locked state in which the output spindle is rotationally fixed relative to the gearcase and the housing,
• wherein the spindle lock assembly includes a first resilient member configured to at least partially absorb a torque impulse from the output spindle when rotating in a first direction, when the spindle lock assembly transitions from the unlocked state to the locked state,
• wherein the spindle lock assembly includes a cam member coupled to the output spindle and a plurality of followers coupled between the cam member and the gearcase ring, wherein the followers are configured to move radially outward when the spindle lock assembly transitions from the unlocked state to the locked state, wherein the plurality of followers is spaced from the gearcase ring when the spindle lock assembly is in the unlocked state and is engaged with the gearcase ring when the spindle lock assembly is in the locked state,
• wherein the cam member includes an inner ring and an outer ring that is rotatable relative to the inner ring about the axis, and
• wherein the first resilient member is positioned between the inner ring and the outer ring.

A power tool comprising:

• a housing;
• a motor supported within the housing;
• an output spindle rotatably supported relative to the housing about an axis, the motor operable to drive the output spindle about the axis;
• a gearcase coupled to the housing and including first and second radially inward-extending protrusions;
• a gearcase ring positioned within the gearcase and including a radially outward-extending projection positioned between the first and second radially inward-extending protrusions;
• and
• a spindle lock assembly between the motor and the output spindle, the spindle lock assembly being adjustable between an unlocked state in which the output spindle is rotatable relative to the gearcase and the housing about the axis and a locked state in which the output spindle is rotationally fixed relative to the gearcase and the housing,
• wherein the spindle lock assembly includes
• a first resilient member, positioned between the radially outward-extending projection of the gearcase ring and the first radially inward-extending protrusion of the gearcase, and
• a second resilient member, positioned between the radially outward-extending projection of the gearcase ring and the second radially inward-extending protrusion of the gearcase, and
• wherein each of the first and second resilient members is configured to at least partially absorb a torque impulse from the output spindle when rotating, respectively, in a forward direction and a reverse direction, when the spindle lock assembly transitions from the unlocked state to the locked state, and
• wherein the first resilient member is configured to contact the radially outward-extending projection of the gearcase ring when the spindle lock assembly transitions from the unlocked state to the locked state.