Fluid Damper Device and Apparatus with Damper

A fluid damper device comprising:

• a case in a bottomed tube shape which is opened to one side in an axial direction;
• a rotor comprising a turning shaft and a valve body which are inserted into a damper chamber formed in the case;
• a fluid which is filled in the damper chamber;
• a cover which comprises a through hole through which the rotor is penetrated, the cover being fixed to an opening part of the case;
• and
• a sealing member which seals a gap space between an outer peripheral face of the rotor and an inner peripheral face of the case;
• wherein an inner peripheral face of the case is formed with a welding protruded part welded to the cover in a part in a circumferential direction;
• wherein the welding protruded part and the cover are welded to each other in a predetermined range in the axial direction;
• and
• wherein a flow-out prevention part is provided on an inner side in a radial direction of the welding protruded part on an other side in the axial direction with respect to the predetermined range.