Which circular multi-contact connector contains ramped grooves and a spring-loaded device and 3 pins spaced 120 degrees apart that provides a positive lock?

Which circular multi-contact connector contains ramped grooves and a spring-loaded device and 3 pins spaced 120 degrees apart that provides a positive lock?

• A. Bayonet Coupling
• B. Threaded Coupling
• C. Push-Pull
• D. Snap-Fit

Answer: (A)

Bayonet coupling is the twist-lock type used on circular multi-contact connectors. It uses ramped grooves in the mating faces and a spring-loaded detent to create a positive lock once the connector is rotated into place. The three pins spaced 120 degrees provide proper orientation and stable contact, so the connector engages securely and resists vibration. As you rotate, the pins ride up the camming ramps, and the spring-loaded mechanism seats into the groove to prevent accidental disengagement. This combination of cam ramps, spring-loaded retention, and evenly spaced contacts is what characterizes bayonet coupling. The other styles rely on threads, a pull-to-release mechanism, or snap-fit action, and do not use this cam-and-detent twist-lock arrangement.

Bayonet coupling is the twist-lock type used on circular multi-contact connectors. It uses ramped grooves in the mating faces and a spring-loaded detent to create a positive lock once the connector is rotated into place. The three pins spaced 120 degrees provide proper orientation and stable contact, so the connector engages securely and resists vibration. As you rotate, the pins ride up the camming ramps, and the spring-loaded mechanism seats into the groove to prevent accidental disengagement. This combination of cam ramps, spring-loaded retention, and evenly spaced contacts is what characterizes bayonet coupling. The other styles rely on threads, a pull-to-release mechanism, or snap-fit action, and do not use this cam-and-detent twist-lock arrangement.