TOY CONSTRUCTION SET

A toy construction set includes first and second construction elements, a pin, and a fastener (1300) including a body (1304) and a head (1302). Each of the first and second elements includes through-holes and grooves on two major surfaces, respectively, of the construction element. A thickness of each groove is substantially the same. At least one end of each groove, an edge of the groove is curved. The pin includes a body having a cavity and a member. A first portion of an edge of the member is curved, and a second portion of the edge of the member is straight. A thickness of the member is not larger than the thickness of each groove. The member of the pin is fixed in place in one of the grooves of the first construction element when the first and second construction elements are coupledby the pin and fastener (1300) so as to constrain the pin from rotating with respect to an axis of the body of the pin. 一种玩具构造套件包含第一构造元件和第二构造元件、销钉以及包含主体(1304)和头端(1302)的紧固件(1300)。第一构造元件和第二构造元件中的每个都包含分别在构造元件的两个主表面上的沟槽和通孔。每个沟槽的厚