Rotating member chatter preventing structure and webbing take-up device

A lock plate (46) chatter preventing structure which, under a predetermined condition, directly or indirectly engages with a take-up shaft that takes up a passenger-restraining webbing belt to deter the rotation of the take-up shaft in a webbing belt pullout direction, the lock plate chatter preventing structure including:

• a support member that rotatably supports the lock plate (46);
• and
• an urging portion (128) formed continuously from the support member,
• wherein the urging portion includes a leading end (128B) that pressingly contacts one axial-direction end portion (116) of the lock plate and urges the lock plate toward the other axial-direction end.

A webbing take-up device (10) comprising:

• a take-up shaft (18) that takes up a webbing belt for restraining a passenger;
• lock means configured to include a lock plate (46) that includes one axial-direction end portion (116) rotatably supported by a support member (40, 41), the lock plate (46) rotating under a predetermined condition and directly or indirectly engaging with the take-up shaft to deter the rotation of the take-up shaft in a webbing belt pullout direction;
• and
• an urging portion (128) that is formed continuously from the support member and includes a leading end (128B) that pressingly contacts the one axial-direction end portion (116) of the lock plate and urges the lock plate toward the other axial-direction end.