JP3709480B2 - Magnetic attachment type 3D display - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a magnetic attachment type three-dimensional display that is magnetically attached to a white board (made of iron) or the like.
[0002]
[Prior art]
Conventionally, as this type of display, there has been known one in which a rectangular parallelepiped or a cube magnet is embedded in a rectangular parallelepiped or a cube made of plastic and six surfaces are used as a display surface (for example, Japanese Utility Model Publication No. 63-137905). Description etc.).
[0003]
[Problems to be solved by the invention]
However, in the conventional magnetic attachment type three-dimensional display, when a plurality of displays are arranged side by side and are magnetically attached to an iron whiteboard or the like, adjacent displays repel each other or are magnetically attached. For this reason, there is a problem that a plurality of displays cannot be arranged closely.
[0004]
Accordingly, an object of the present invention is to provide a magnetic solid display that does not repel or magnetically adhere to each other when a plurality of displays are adjacent to each other.
[0005]
[Means for Solving the Problems]
The above object of the present invention is to form a rectangular parallelepiped or a cube with a material that is difficult to be attracted by the magnet, and adhere to the magnetic adherend by the attractive force of the magnet provided therein to use the surface of the rectangular parallelepiped or the cube as a display surface. A spherical solid body formed of a material that is difficult to be attracted by a magnet is rotatably accommodated inside the rectangular parallelepiped or a cube, and the magnet includes a plurality of the magnetic solid stereoscopic displays adjacent to each other. When adhering to the magnetic adherend, the magnetized three-dimensional displays that are adjacent to each other are partially embedded only on one side of the surface of the spherical body so that they do not repel or magnetically adhere to each other. This is achieved by the featured magnetically attached stereoscopic display.
[0006]
Is one magnet is provided inside of the cuboid or cube, the spherical body further comprises a buried counterweight so as to maintain the heart height position within the spherical body the magnet, the balance weight is preferably Rukoto be formed of a material that is not adversely attraction by the magnet.
[0007]
The balance weight may include a first balancing weight having a second side wherein is embedded in the position of the magnet and point symmetry and the magnet equal mass around the center point of the spherical body of the spherical surface preferable.
[0008]
It said balance weight preferably further comprises a second balancing weight, which is embedded in the front surface of the front Symbol spheroids.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
A preferred embodiment of a magnetically attached stereoscopic display according to the present invention will be described below with reference to FIGS. FIG. 1 is an embodiment of a magnetically-attached stereoscopic display, and is a perspective view showing the inside by phantom lines, and FIG.
[0011]
The magnetic attachment type three-dimensional display 1 includes a spherical body 2 formed of plastic, a solid 3 formed of plastic and rotatably containing the spherical body 2, and a magnet 4 embedded in the vicinity of the surface of the spherical body 2. Have. The spherical body 2 and the three-dimensional body 3 are made of non-magnetic plastic, but are made of a material that is difficult to be attracted by magnetic force even if it is other than plastic, for example, aluminum, stainless steel, or other non-ferromagnetic material. You can also
[0012]
The solid 3 preferably displays symbols, numbers, characters, etc. on six sides as a cube as shown in the figure, but has various shapes such as a rectangular parallelepiped, a hexagonal column, an octagonal column, and a hexahedron with a gentle concave curved surface. Can be adopted.
[0013]
The internal structure of the three-dimensional body 3 is not particularly limited as long as the spherical body 2 can be rotatably accommodated, and a spherical space in which the spherical body 2 is accommodated may be formed inside the cube as illustrated, although not illustrated. A six-sided cube may be formed by connecting six plate members, or a support body that contacts and supports the spherical body may be provided in the solid body 3 to support the spherical body 2.
[0014]
The spherical body 2 is a solid body in the illustrated example, but may be a hollow body for weight reduction. In the case of a hollow body, a large number of through holes can be formed on the spherical surface for further weight reduction, and in the case of a solid body, a large number of recesses may be formed on the spherical surface.
[0015]
The magnet 4 embedded in the vicinity of the surface of the spherical body 2 may be magnetite, a permanent magnet, a rubber magnet, or the like. When magnetically attached to a board (not shown), the attractive force or repulsive force that acts between the magnets 4 of the adjacent magnetic attachment type three-dimensional display 1 is smaller than the attractive force that each magnet works with the iron board; That is, the adjacent magnetic attachment type three-dimensional display 1 is not separated by the repulsive force of the magnet 4 or when one magnetic attachment type three-dimensional display 1 is separated from the iron board by the attractive force. Is designed to have a size, a position, a magnetic force and the like so as not to be pulled from the iron board by the attraction. In addition, since the attractive force or repulsive force of the magnet 4 is inversely proportional to the square of the distance of the magnets, the distance between the magnet 4 and the iron board is smaller than the distance between the magnets 4 of the adjacent magnetic display 3. By designing so as to be, the force acting on the adjacent magnetic attachment type three-dimensional display 1 can be made sufficiently smaller than the attractive force with the magnetic adherend.
[0016]
In addition, in order to reduce the friction between the spherical body 2 and the inner wall of the three-dimensional body 3 and to facilitate the rotation of the spherical body 2, a liquid such as lubricating oil is sealed in the three-dimensional body 3, It is preferable to interpose the liquid between them.
[0017]
According to the magnetic attachment type three-dimensional display 1 having the above configuration, since the spherical body 2 is rotatably accommodated in the solid 3, any surface of the solid is used as a display surface. In addition to the fact that the spherical body 2 rotates and the magnet 4 can be attracted and magnetically attracted to an iron board or the like to be magnetized, the magnet 4 is embedded in the vicinity of the surface of the spherical body 2. Therefore, while the distance between the magnet 4 and the adherend is narrowed, the distance between the magnet 4 of the adjacent magnetic display 3 is separated and the adjacent magnetic attachment 3D. It is possible to reduce the magnetic action acting on the display 1 and eliminate repulsion or magnetic adhesion even when a plurality of displays are adjacent to each other.
[0018]
The spherical body 2 preferably has a balance weight embedded so as to maintain the magnet 4 at a substantially central height position of the spherical body 2.
[0019]
The first balance weight 5 constituting the balance weight is embedded in a point-symmetrical position with respect to the magnet 4 with the center point of the spherical body 2 as the center. The first balance weight 5 has the same mass as the magnet 4. Without such a balance weight, the magnet 4 is positioned vertically below the spherical body in a normal state. Therefore, to magnetize the magnetized body, the magnet 4 is almost centered against the spherical body 2 against gravity. Magnetic force is required to lift up to the height position. However, by providing the first balance weight 5 as described above, the magnet 4 is placed in a horizontal plane including the center point of the spherical body 2 in order to magnetically attach the magnetic attachment type three-dimensional display 1 to the adherend. It is no longer necessary to rotate against gravity, and a smaller magnetic force or smaller magnet can be used as compared with a case where no balance weight is provided.
[0021]
Even when the first balance weight 5 is provided or not provided, the second balance weight 6 formed of a material not attracted by the magnet is added to the vicinity of the surface of the spherical body 2, so that the approximate center of the spherical body 2 is obtained. The magnet 4 can be maintained in a height position. The magnet 4 can stand still at the center height position of the spherical body 2 with the first balance weight 5 alone, but it is advantageous to add the second balance weight 6 in order to shorten the time until it stops. In the example shown in the figure, only one second balance weight 6 is embedded at a position equidistant from the magnet 4 and the first balance weight 5. However, the present invention is not limited to this. You may make it balance by embedding a weight.
[0022]
【The invention's effect】
As is clear from the above description, according to the present invention, a magnet is provided in the vicinity of the surface of a spherical body rotatably accommodated in a three-dimensional object, so that a plurality of magnetically-attached three-dimensional displays are adjacent to each other. There is provided a magnetized 3D display in which the magnetized 3D displays are not repelled or magnetized.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of a magnetically attached stereoscopic display according to the present invention.
2 is a longitudinal sectional view taken along the line AA in FIG. 1. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Magnetic attachment type | mold solid display 2 Spherical body 3 Solid 4 Magnet 5 1st balance weight 6 2nd balance weight

Claims (4)

It is a magnetic solid display that uses a material that is difficult to be attracted by a magnet to form a rectangular parallelepiped or a cube , and adheres to a magnetic adherend by the attractive force of a magnet provided therein, and uses the surface of the rectangular parallelepiped or the cube as a display surface. Te,
A spherical body formed of a material that is difficult to be attracted to the magnet is rotatably accommodated inside the rectangular parallelepiped or cube,
The magnet is configured so that when the plurality of magnetically attached stereoscopic displays are adjacent to each other and adhered to the adherend, the adjacent magnetically attached stereoscopic displays are not repelled or magnetically attached to each other. A magnetized three-dimensional display characterized in that it is partially embedded only on one side of the surface . Is one magnet is provided inside of the cuboid or cube, the spherical body further comprises a buried counterweight so as to maintain the heart height position within the spherical body the magnet, the balance 2. A magnetic attachment type three-dimensional display according to claim 1, wherein the weight is made of a material which is not attracted by the magnet . The balancing weight is to include a first balance weight having the other a side is embedded in the position of the magnet and the point symmetry about the center point of the spherical body and said magnet equivalent mass of the spherical surface 3. A magnetic attachment type three-dimensional display according to claim 2. It said balance weight is magnetically attached stereoscopic display device according to claim 3, characterized in that pre-Symbol further comprising a second balancing weight, which is embedded in the front surface of the spherical body.

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