Multi-layered Earth model with magnetically fixed tectonic plates

Abstract

Didactic, multi-layered Earth model (1) with a spherical base body and several plate elements (10) designed as simplified tectonic plates, characterized in that each plate element (10) is formed in three layers with a cover shell (11), a ferromagnetic layer (12) and a cover shell (13), wherein the shells (11, 13) encapsulate the layer (12) on all sides, and that the plate elements (10) rest on an upper mantle (33) which has a plurality of recesses on its outer surface into which magnets (22), in particular permanent magnets, are inserted and flush closed by cover elements (23), so that the magnets (22) are not accessible from the outside.

Description

Technical field

[0001] Didactic learning materials, in particular three-dimensional earth models / globes with removable surface segments (tectonic plates) and a representable internal structure of the earth. State of the art

[0002] Common teaching models include globes with printed continents or Earth models that can be disassembled into layers. Magnetic mountings are also known, but often with openly accessible magnets or without a concealed, flush-mounted cover for the magnets, and without flexible, non-indexed attachment of plate elements. Task

[0003] The task is to provide a robust and didactically useful model of the Earth. The Earth's crust should consist of detachable, three-layer plate elements that can be freely attached to an upper mantle equipped with magnets without fixed indexing; the magnets are arranged in the mantle and flush-sealed by cover elements (23) so that they are not accessible from the outside. At the same time, the internal structure of the Earth should be clearly representable. Solution

[0004] The plate elements (10) are formed as a sandwich consisting of a cover shell (11), a ferromagnetic layer (12), and a cover shell (13), with the layer (12) being encapsulated on all sides. Beneath the Earth's crust lies the upper mantle (33) with a plurality of recesses for magnets (22), in particular permanent magnets; each recess is flush-sealed by a cover element (23). The magnetic attraction between the magnets (22) and the ferromagnetic layer (12) holds the plate elements (10) detachably on the mantle (33) without fixed indexing. The inner core (30) is a solid sphere, and the further layers (31-33) are two-part hollow spheres with plug-in or snap-fit ​​connections. Detailed description of at least one embodiment

[0005] The Earth model (1) comprises the inner core (30) as a solid spherical body and coaxially arranged, two-part hollow spherical layers around it: outer core (31), lower mantle (32), and upper mantle (33). The hemispheres of the layers are connected to form a complete spherical layer via plug-in or snap-fit ​​connections. The upper mantle (33) has recesses on its outer surface into which magnets (22), in particular permanent magnets, are inserted. Each recess is closed by a separate cover element (23) that is flush with the mantle surface, so that the magnets (22) are not accessible from the outside.

[0006] The plate elements (10) forming the Earth's crust (34) are composed of three layers: an inner cover shell (11) on the mantle side, a central ferromagnetic layer (12), and an outer cover shell (13). The shells (11, 13) encapsulate the layer (12) on all sides. In a preferred embodiment, the cover shell (13) has a circumferential folded edge that interlocks with the edge region of the ferromagnetic layer (12). The shells can be bonded and / or interlocked with each other. In the assembled state, the underside of the plate elements (10) lies essentially flush against the upper mantle (33). The plate elements (10) are held detachably by the magnets (22); no fixed indexing is provided, so that the plate elements (10) can be flexibly arranged at different positions on the mantle surface. Brief description of the drawings Fig. 1: Exterior view of the Earth model (1) with an exemplary division of the plate elements (10) that together form the Earth's crust (34). Fig. 2: Exploded view of a plate element (10) with cover shell (11) (bottom on the outer side), ferromagnetic layer (12) (middle) and cover shell (13) (outer side, with circumferential folded edge). Fig. 3a: Schematic cross-section through the upper mantle (33) with recess, inserted magnet (22) and flush-mounted cover element (23). Fig. 3b: Perspective view of the upper mantle (33) in two half-shells. Fig. 4: Exploded view of the inner layers: inner core (30) as a solid sphere and outer core (31), lower mantle (32) and upper mantle (33) as two-part hollow spheres. Reference symbol list 1 Earth model 10 plate elements 11 Cover plate (inner, mantle-side plate) 12 ferromagnetic layer 13 Cover shell (outer shell with surrounding folded edge) 12 Magnet (especially permanent magnet) 23 Cover element (closure of the magnetic recess) 30 inner core (solid sphere) 31 outer core (two-part hollow sphere) 32 lower mantle (two-part hollow sphere) 33 upper mantle (two-part hollow sphere with magnetic recesses) 34 Earth's crust (sum of all plate elements)

Claims

[1] Didactic, multi-layered Earth model (1) with a spherical base body and several plate elements (10) designed as simplified tectonic plates, characterized by , that each plate element (10) is formed in three layers with a cover shell (11), a ferromagnetic layer (12) and a cover shell (13), wherein the shells (11, 13) encapsulate the layer (12) on all sides, and that the plate elements (10) rest on an upper mantle (33) which has a plurality of recesses on its outer side, into which magnets (22), in particular permanent magnets, are inserted and flush closed by cover elements (23), so that the magnets (22) are not accessible from the outside. [2] Earth model according to claim 1, characterized by that the cover elements (23) are flush with the surface of the casing and are attached in a material- or form-fitting manner. [3] Earth model according to one of the preceding claims, characterized by, that the plate elements (10) can be freely positioned and removed on the surface of the upper mantle (33) without fixed indexing. [4] Earth model according to one of the preceding claims, characterized by , that the inner core (30) is formed as a solid sphere. [5] Earth model according to any one of the preceding claims, characterized by , that the outer core (31), the lower mantle (32) and the upper mantle (33) are designed as two-part hollow spheres. [6] Earth model according to any one of the preceding claims, characterized by that the components are made of suitable, dimensionally stable materials. [7] Earth model according to one of the preceding claims, characterized by , that the shells (11, 13) are connected by gluing and / or mechanical interlocking. [8] Earth model according to one of the preceding claims, characterized by , that the magnets (22), in particular permanent magnets, are distributed on the surface of the cladding. [9] Plate element (10) for an Earth model according to one of claims 1 to 8, characterized by , that it is designed as a three-layer sandwich consisting of a cover shell (11), a ferromagnetic layer (12) and a cover shell (13), wherein the shells (11, 13) encapsulate the ferromagnetic layer (12) on all sides and the plate element (10) forms the simplified contour of a tectonic plate. [10] Plate element according to claim 9, characterized by , that the cover shell (13) has a circumferential folded edge that positively engages and / or overlaps the edge area of ​​the layer (12). [11] Plate element according to claim 9 or 10, characterized by , that the shells (11, 13) are connected by gluing and / or mechanical interlocking. [12] Plate element according to one of claims 9 to 11, characterized by , that the underside of the plate element (10) forms a substantially smooth surface when assembled. [13] Upper mantle (33) for an Earth model, characterized by , that it is designed as a two-part hollow sphere and has a multitude of recesses on its outside into which magnets (22), in particular permanent magnets, are inserted and each is flush closed by cover elements (23). [14] Upper mantle according to claim 13, characterized by that the two half-shells can be connected to each other via plug or snap connections. [15] Upper mantle according to claim 13 or 14, characterized by , that the magnets (22), in particular permanent magnets, are distributed and designed to hold ferromagnetic plate elements (10) detachably.

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