Motor assembly such as an electro-mechanical-brake motor assembly

A motor assembly comprising:

• a) an electric motor including a drive shaft with a longitudinal axis;
• b) a latch gear non-rotatably attached to the drive shaft and having a longitudinally extending gear tooth having a notch facing in a circumferential direction;
• c) a solenoid;
• and
• d) a spring operatively connected to the solenoid and having a spring projection which is longitudinally-deflectable against the latch gear by energizing the solenoid and which thereafter is retainable in the notch of the gear tooth of the latch gear by rotating the latch gear to receive the longitudinally-deflected spring projection in the notch.

An electro-mechanical-brake (EMB) motor assembly comprising:

• a) an EMB electric motor including a drive shaft with a longitudinal axis, wherein the EMB electric motor is rotatable in a brake-setting forward direction and is rotatable in a brake-releasing reverse direction;
• b) a parking-brake latch gear non-rotatably attached to the drive shaft and having a gear tooth;
• c) a solenoid;
• and
• d) a spring operatively connected to the solenoid and having a spring projection longitudinally-deflectable by energizing the solenoid, wherein the gear tooth is disposed and shaped to longitudinally retain the spring projection when the spring projection is longitudinally deflected against the parking-brake latch gear by energizing the solenoid and when thereafter the drive shaft is rotated in the reverse direction rotating the gear tooth against the longitudinally-deflected spring projection, wherein the gear tooth longitudinally holds the longitudinally-retained spring projection when the solenoid and the EMB electric motor are deenergized, and wherein the gear tooth is shaped to longitudinally release the longitudinally-retained spring projection to a non-deflected state with the solenoid deenergized when the drive shaft is rotated in the forward direction rotating the gear tooth away from the longitudinally-deflected spring projection.

A motor assembly comprising:

• a) an electric motor including a drive shaft with a longitudinal axis, wherein the electric motor is rotatable in a forward direction and is rotatable in a reverse direction;
• b) a latch gear non-rotatably attached to the drive shaft and having a gear tooth;
• c) a solenoid;
• and
• d) a spring operatively connected to the solenoid and having a spring projection longitudinally-deflectable by energizing the solenoid, wherein the gear tooth is disposed and shaped to longitudinally retain the spring projection when the spring projection is longitudinally deflected against the latch gear by energizing the solenoid and when thereafter the drive shaft is rotated in the reverse direction rotating the gear tooth against the longitudinally-deflected spring projection, wherein the gear tooth longitudinally holds the longitudinally-retained spring projection when the solenoid and the motor are deenergized, and wherein the gear tooth is shaped to longitudinally release the longitudinally-retained spring projection to a non-deflected state with the solenoid deenergized when the drive shaft is rotated in the forward direction rotating the gear tooth away from the longitudinally-deflected spring projection.