Fastener assembly for interior trim in a vehicle

A fastener assembly for an interior trim part in a vehicle, comprising:

• a fixed element, wherein the fixed element includes a base panel with a through hole and a plurality of engaging parts extending from a surface of the base panel, the engaging parts are flexible to deform towards or away from a central axis of the through hole;
• and
• a movable element including a flange and an engaging shaft extending from a surface of the flange,
• wherein the engaging shaft passes through the through hole of the fixed element to be engaged with the engaging parts at a fixed position,
• wherein the engaging shaft comprises a guiding part configured to be engaged with the engaging parts of the fixed element at the fixed position, and to guide the engaging parts to move to be released from the engaging shaft when the movable element rotates about a central axis thereof along a first direction,
• wherein the engaging shaft further comprises a shaft body extending from the surface of the base panel and a head on the shaft body, and the head has a diameter larger than that of the shaft body, wherein the guiding part is disposed between the shaft body and the head and a diameter of the guide part is gradually decreased in a direction from the head to the shaft body and has a guiding groove, and
• wherein the engaging parts are engaged with a lower end of the guiding part at the fixed position, and wherein the engaging parts are guided by the guiding groove to move to an upper end of the guiding part as the movable element rotates such that the engaging parts are released from the engaging shaft.