Liquid splash preventing mechanism and component mounting apparatus

A component mounting apparatus comprising:

• a holding member rotating/moving device that is to move so as to rotate a component holding member along a circumference;
• and
• a lift mechanism for moving the component holding member up and down when a component is to be held and mounted by the component holding member,
• wherein said lift mechanism has a driving part for generating a driving force for moving the component holding member up and down, and also has an oil splash preventing mechanism,
• with said driving part including
• (i) a cam which is to be stored in a state soaking in lubricating oil inside a lubricating oil tank having an opening part formed at an upper wall thereof,
• (ii) a roller in contact with said cam, and
• (iii) a first driving lever having one end attached to said roller, and having another end extending to an exterior of the lubricating oil tank through the opening part, and
• with said oil splash preventing mechanism being arranged at the opening part and having a first seal member and a second seal member fitted to the upper wall of the lubricating oil tank,
• said first seal member comprising a cylindrical member which supports said first driving lever and is arranged opposite to said second seal member via a sealing gap, formed between an outer circumferential face of said cylindrical member and said second seal member, for preventing scattering of the lubricating oil by virtue of being filled with the lubricating oil, and
• said second seal member having a U-shaped arc face conforming to said outer circumferential face.