Electric latch mechanism

A latchbolt assembly, comprising:

• a latchbolt positioned in a housing and having a projected position and a depressed position relative to the housing, wherein the latchbolt is biased toward the projected position;
• a roller engaged with the latchbolt such that axial movement of the latchbolt along a longitudinal axis from the projected position toward the depressed position engages a drive surface of the latchbolt against the roller to urge the roller from a first position toward a second position, wherein the roller retains the latchbolt in the projected position when the roller is in the first position, and wherein the roller permits movement of the latchbolt from the projected position to the depressed position when the roller is in the second position;
• and
• a locking sleeve movable between a locking position and a first unlocking position by actuation of a manual actuator, the locking sleeve including a blocking surface and a first recess;
• wherein when the locking sleeve is in the locking position, the blocking surface is aligned with the roller and engages the roller to prevent movement of the roller from the first position to the second position and thereby retaining the latchbolt in the projected position;
• and
• wherein when the locking sleeve is in the first unlocking position, the first recess is aligned with the roller to permit movement of the roller from the first position to the second position and into the first recess to thereby enable depression of the latchbolt.

A latchbolt assembly, comprising:

• a housing assembly comprising an aperture;
• a roller seated in the aperture for movement between a first position and a second position;
• a latchbolt mounted to the housing assembly for axial movement along a longitudinal axis between a projected position and a depressed position relative to the housing assembly, wherein the latchbolt includes a ramped surface that engages the roller to urge the roller from the first position toward the second position as the latchbolt moves from the projected position toward the depressed position, and wherein engagement between the ramped surface and the roller prevents movement of the latchbolt from the projected position to the depressed position when the roller is in the first position, and wherein the roller permits movement of the latchbolt from the projected position to the depressed position when the roller is in the second position;
• and
• a locking sleeve movably mounted between an inner housing and an outer housing of the housing assembly;
• wherein the locking sleeve is configured to be linearly driven between the locking position and the first unlocking position via a linear actuator, wherein a blocking surface of the locking sleeve is aligned with the roller and engages the roller when the locking sleeve is in the locking position to prevent movement of the roller from the first position to the second position and thereby retain the latchbolt in the projected position, and wherein a first recess of the locking sleeve is aligned with the roller when the locking sleeve is in the first unlocking position to permit movement of the roller from the first position to the second position and into the first recess to thereby enable depression of the latchbolt;
• and
• wherein the locking sleeve is configured to be rotated between the locking position and the second unlocking position via a rotational actuator, and wherein a second recess of the locking sleeve is aligned with the roller when the locking sleeve is in the second unlocking position to permit movement of the roller from the first position to the second position and into the second recess to thereby enable depression of the latchbolt.