Stamped laminated stacks for parking pawl, parking gear and parking anchor

In a parking brake (10) for a transmission (12) of a motorized vehicle (14) for transporting at least one of passenger and cargo, where the transmission (12) receives rotary input torque from a power source (16) and transmits the rotary input torque to an output load (18) to propel the vehicle (14), and the parking brake (10) stops rotation of the output load (18) and prevents movement of the vehicle (14), the improvement comprising:

• an actuator (26) movable between a first position and a second position;
• a toothed parking gear (20) connected to the output load (18) and having an axis of rotation, the toothed parking gear (20) defined by a plurality of stacked laminas (50), each of the plurality of stacked laminas (50) being rigid and having at least one peripherally extending surface (52), where the at least one peripherally extending surface (52) of at least two of the plurality of stacked laminas (50) cooperate to define at least one load-bearing surface (54), and where the plurality of stacked laminas (50) are secured together to prevent relative movement of any one of the plurality of stacked laminas (50) with respect to another of the plurality of stacked laminas (50) when a load is transmitted through the toothed parking gear (20) from the at least one load-bearing surface (54);
• and
• a pivotable parking pawl (22) engageable with the toothed parking gear (20) for stopping rotational motion of the output load (18) in an engaged position even if the vehicle (14) is unattended, the pivotable parking pawl (22) rotatable with respect to a pivot axis in response to movement of the actuator (26) between the first position and the second position, the pivot axis of the parking pawl (22) being parallel to and offset from the axis of rotation of the toothed parking gear (20), the parking pawl (22) pivotable between a disengaged position spaced from the toothed parking gear (20) and an engaged position contacting the toothed parking gear (20), the parking pawl (22) defined by a plurality of stacked laminas (40), each of the plurality of stacked laminas (40) being rigid and having at least one peripherally extending surface (42), where the at least one peripherally extending surface (42) of at least two of the plurality of stacked laminas (40) cooperate to define at least one load-bearing surface (44) engaging the at least one load bearing surface (54) of the toothed parking gear (20), where the plurality of stacked laminas (40) are secured together to prevent relative movement of any one of the plurality of stacked laminas (40) with respect to another of the plurality of stacked laminas (40) when a load is transmitted through the parking pawl (22) from the at least one load-bearing surface (44), at least one of the plurality of stacked laminas (40) having a different peripheral contour (46) defining at least one chamfered load-bearing surface (48) on the stacked laminas (40) of the parking pawl (22), the at least one chamfered load-bearing surface (48) on the parking pawl (22) facing the actuator (26) for engagement with the actuator (26) during movement between the first position and the second position;
• and
• an anchor (24) located to support the actuator (26) interposed between the anchor (24) and the parking pawl (22) when the parking pawl (22) is in the engaged position with the toothed parking gear (20), the anchor (24) defined by a plurality of stacked laminas (30), each of the plurality of stacked laminas (30) being rigid and having at least one peripherally extending surface (32), wherein the at least one peripherally extending surface (32) of at least two of the plurality of stacked laminas (30) cooperate to define at least one load-bearing surface (34) engaging the actuator (26), and wherein the plurality of stacked laminas (30) are secured together to prevent relative movement of any one of the plurality of stacked laminas (30) with respect to another of the plurality of stacked laminas (30) when a load is transmitted through the parking pawl (22) from the at least one load-bearing surface (34).