초록 ▼

An inserted lid (1) for a box (2) is formed so that a contact region (5) can be pressed against the inside of the side wall of the box. In the non-inserted state, said side wall is slightly larger than the box opening (4). On insertion of the lid (1) into the box (2), the largest circumferential lin

An inserted lid (1) for a box (2) is formed so that a contact region (5) can be pressed against the inside of the side wall of the box. In the non-inserted state, said side wall is slightly larger than the box opening (4). On insertion of the lid (1) into the box (2), the largest circumferential line of the contact region (5) must fit the inside of the side wall of the box as a result of an elastic deformation of the closure surface (3). To prevent the forces emanating on insertion from the side wall of the box from leading to irreversible deformations, the closure surface (3) has spring properties which are radial with respect to the contact region (5) and permit an elastic deformation of the contact region (5) in the radial direction. To ensure these spring properties, the closure surface (3) has a shape differing from a flat surface, in particular two concentric waves (7) formed constant distances away from the contact region (5) and/or a central vault (8). On insertion of the lid (1), this difference is slightly increased by the compression of the contact region (5), or the waves (7) and the vault (8) are slightly deformed, which leads to storing forces which press the contact region (5) against the inside of the side wall of the box. Owing to the shape imposed on the closure surface (3), it is ensured that no creases or other irreversible deformations form on insertion of the lid (1).

대표청구항 ▼

[ What is claimed is:] [1.] Box with an inserted lid both of which consist of cardboard, half-board or strong paper,the box comprising a cylindrical box body cut from a tube and having at least one end which is to receive the inserted lid,the lid comprising(i) a closure portion overspanning the cros

[ What is claimed is:] [1.] Box with an inserted lid both of which consist of cardboard, half-board or strong paper,the box comprising a cylindrical box body cut from a tube and having at least one end which is to receive the inserted lid,the lid comprising(i) a closure portion overspanning the cross section of the box body at a distance from said end,(ii) a cylindrical contact region extending from the circumference of said closure portion towards said end, having a height essentially equal to said distance and having a diameter essentially equal to the one of the box body, and(iii) a cardboard cylinder section cut from a separate tube equal to the one of the box body and surrounding the free or open end of said contact region such that a first end of said cardboard cylinder section rests against said end of the box body while a second end of said cardboard cylinder section is bent inwards to form a grip rib.