Clip

A clip comprising:

• a first support element having a first end and a free end;
• a second support element having a first end and a free end, said first and second support elements being arranged opposite to each other;
• a connection element arranged so as to connect said first end of said first support element to said first end of said second support element so that said first support element, second support element and connection element cooperate together to form a substantially U-shaped section;
• and
• a first hinge groove located at said free end of said first support element and including an inner first surface including first and second inner first surface portions on either side of said first hinge groove, said first hinge having a thickness smaller than a thickness of said first support element;
• a second hinge groove located at said free end of said second support element and including an inner second surface including first and second inner second surface portions on either side of said second hinge groove, said second hinge having a thickness smaller than a thickness of said second support element;
• a first press element extending from said free end of said first support element through said first hinge groove and having a distal end opposite said first hinge groove, said first press element being inwardly bent at said first hinge groove such that said first and second inner first surface portions abut against each other;
• and
• a second press element extending from said free end of said second support element through said second hinge groove, said second press element being inwardly bent at said second hinge groove such that said first and second inner second surface portions abut against each other, said second press element having a distal end opposite said second hinge groove abutting said distal end of said first press element, wherein said first support element, said second support element, said connection element and said first and second press elements comprise a unitary integral structure, said first and second hinge grooves generate elastic forces acting on said first and second press elements urging said first and second press elements toward each other, wherein said first hinge groove includes a bent portion at which said first press element is inwardly bent and first and second inner surfaces located on opposite sides of said bent portion and said second hinge groove includes a bent portion at which said second press element is inwardly bent and first and second inner surfaces located on opposite sides of said bent portion, said elastic force acting on said first press element being generated by said first inner surface and said second inner surface of said first hinge exerting a force on each other and said elastic force acting on said second press element being generated by said first inner surface and said second inner surface of said second hinge exerting a force on each other, and papers can be inserted between said first press element and said second press element.