Stackable construction element e.g. children's plastic construction set, for forming e.g. model, has block provided with projections and housings, and retaining unit mounted on one housing, where unit has ring made of plastic material

摘要

The element has a cylindrical hollow block including two interlocking projections or studs and two receiving housings on surfaces that are opposite to one another, where the element is in rectangular parallelepiped shape. The receiving housings receive respective projections. An interlocking projection retaining unit is movably mounted on one of the receiving housings. The unit has a circular ring (23) with two circular washers (25) that are connected together by a cylindrical connecting wall (27), where the ring is made of elastomer material or rigid plastic material.