Operating mechanism, and method for manufacturing operating mechanism

Rattling of an operating unit is suppressed when the front surface of the operating unit is moved to a position projecting from an operating panel. An operating mechanism 20 comprises a cylindrical pipe plunger 21 that is linked to the axially rearward side of a handle 10 and is open on at least one end; a cylindrical flange core 22 that is housed in the pipe plunger 21 and is provided to be axially slidable in the pipe plunger 21, and a spring 23 that urges the pipe plunger 21 in the axial direction with respect to the flange core 22. A groove G and a rib R that moves inside the groove G arerespectively provided to one of the outer circumferential surface of the flange core 22 and the inner circumferential surface of the pipe plunger 21, and when the handle 10 is in the forward position,an inclined surface Rb of the rib R in the flange core 22 contacts an inclined surface Gb of the groove G in the pipe plunger 21. 本发明抑制当操作部的前表面移动至从操作面板突出的位置时的操作部的松动。操作机构20具备筒状的管状柱塞21、筒状的凸缘芯22、以及弹簧23，管状柱塞21连结于旋钮10的轴向后侧，且其至少一端部