Rearview device with detent assembly

A rearview device for a vehicle, comprising:

• a rearview device head;
• a rearview device base comprising a base frame;
• and
• a detent system which is configured to control rotation of the rearview device head with respect to the rearview device base;
• and
• an anti-rotation feature,
• wherein said detent system is configured to lock and unlock rotation of said rearview device head with respect to said rearview device base without vertical movement of said rearview device head with respect to said rearview device base,
• wherein said detent system, comprises:
• a top detent plate;
• and
• an upper detent plate,
• wherein said top detent plate comprises a first cam surface,
• wherein said upper detent plate comprises a second cam surface,
• wherein said first cam surface of said top detent plate and said second cam surface of said upper detent plate are operable to engage in a first state and said first cam surface of said top detent plate and said second cam surface of said upper detent plate are operable to disengage in a second state,
• wherein said upper detent plate comprises an aperture for receiving said anti-rotation feature,
• wherein said anti-rotation feature is shaped to engage said upper detent plate to form an interference joint,
• wherein said interference joint prevents the rotation of said upper detent plate around said anti-rotation feature,
• wherein the rearview device further comprises a lower detent plate and a bottom detent plate,
• wherein a biasing element provides a force to said upper detent plate and said lower detent plate
• wherein said lower detent plate comprises a third cam surface and said bottom detent plate comprises a fourth cam surface, and
• wherein said third cam surface of said lower detent plate and said fourth cam surface of said bottom detent plate are operable to engage in the first state and said third cam surface of said lower detent plate and said fourth cam surface of said bottom detent plate are operable to disengage in the second state,
• wherein said anti-rotation feature is fixed to said base frame,
• wherein said upper detent plate comprises a first attachment mechanism and said lower detent plate comprises a second attachment mechanism,
• wherein said anti-rotation feature comprises a third attachment mechanism and a fourth attachment mechanism, and
• wherein said third attachment mechanism is operable to attach to said first attachment mechanism of said upper detent plate and said fourth attachment mechanism is operable to attach to said second attachment mechanism of said lower detent plate.