JP2021145929A - Article display device, method of manufacturing the same, and method for using the same - Google Patents

Abstract

To provide an article display device for supporting a support board in the state of magnetically levitating it above a base, which enables easy short-time execution of work for arranging a magnet on the base and fixing it.SOLUTION: A magnet is fixed to a base by using a magnet holding member in which a plurality of recesses or frame parts range in an annular shape. A rod-like steel material including neodymium iron is fitted into each recess or each frame part of the magnet holding member, and fixed with an adhesive. After the steel material fixed to the magnet holding member is magnetized by a magnetizer, the magnet holding member is attached to the bottom of the base.SELECTED DRAWING: Figure 6

Description

The present invention relates to a device for displaying an article in a floating state or decorating a space by using magnetic force.

A technique is known in which a magnetic levitation mechanism is formed between a base and a support plate mounted on the base, and a levitation force is applied to the support plate by magnetic force to levitate the support plate on the base.
Of these, as a permanent magnet is used for the element that generates the magnetic force, the permanent magnet inside the base and the permanent magnet inside the support plate are arranged so that the same poles face each other vertically, and the permanent magnet is used. A magnetic levitation structure is known in which a levitation force is applied to a support plate on a substrate by generating a repulsive force in the vertical direction (see, for example, Patent Document 1).

Jitsukaisho 51-137600

As described above, when the permanent magnets are arranged on the base and the support plate in the directions in which the same poles face each other to form the magnetic levitation mechanism, the support plate that floats above the base acts as a repulsive force. Since the magnitude of the magnetic force does not change, it stabilizes in the vertical direction, but becomes unstable in the horizontal direction. In order to stably levitate the support board on the board, it is necessary to equip a mechanism for controlling the horizontal displacement of the support board in the floating state.

It is advantageous in terms of manufacturing cost to use a combination of a plurality of general-purpose permanent magnets for the permanent magnets arranged on the base and the support plate, rather than forming one having a size and shape suitable for the dimensions of both plates. In addition, in order to raise the support plate on the board against the weight of the support plate containing the permanent magnets, it is necessary to arrange and fix the permanent magnets having a large magnetic force on both plates.
In this case, when a plurality of permanent magnets are arranged side by side on the board and the support board, an attractive force is generated when the different poles are close to each other when the permanent magnets are arranged, and a repulsive force is generated when the same poles are close to each other. There is a problem that it takes time and effort to fix the magnet in a desired position.

For example, when attaching a permanent magnet to a base, one permanent magnet is fixed to the base with an adhesive, and after the adhesive has dried sufficiently and the permanent magnet is completely fixed, the other adjacent permanent magnets are sequentially adhered. Or, in order to secure a large magnetic force, after the one permanent magnet is completely fixed, a permanent magnet of the same shape and size is placed on the upper surface and fixed with an adhesive. , The work of attaching permanent magnets was time consuming.
Further, in order to allow the support board to float on the board in a well-balanced and stable manner, it is necessary to precisely position and attach the permanent magnets arranged on both boards. When multiple permanent magnets are manually bonded and fixed one by one, in order to improve the accuracy of the mounting position of the permanent magnets, it is necessary to carefully bond and fix one permanent magnet, which is necessary for skilled workers. Otherwise, it was difficult to shorten the installation work time.

In view of such a problem of the prior art, the present invention magnetically levitates a support plate on which an exhibited article is placed on a base to support the article display device, in which the horizontal displacement of the support plate levitated on the base is present. It is an issue to make it possible to stably raise the support plate by properly controlling the above.
Another object of the present invention is to make it possible to easily perform the work of arranging and fixing magnets on the base and the support plate in a short time.

In order to solve the above problems, the article display device of the present invention is a device in which a base having a built-in magnet and a support plate form a magnetic levitation mechanism, and a support plate on which an exhibition article is placed is magnetically levitated and supported on the base. hand,
The magnetic levitation mechanism is located at at least four positions of the annular magnet fixed to the base and the bottom of the support plate, the annular magnet fixed to the substrate, and the outside of the annular magnet. It is characterized by having a configuration including a fixed air-core coil.

According to this, the annular magnet fixed to the bottom of the base and the annular magnet fixed to the bottom of the support plate have the same poles facing each other vertically when the support plate is placed on the base. By generating the repulsive force by the magnets of both boards in the vertical direction, it is possible to apply a levitation force to the support board to levitate it on the board.
Further, the air core coils arranged on the outer four sides of the magnets arranged in the ring shape of the base generate magnetic flux by energizing, and the Lorentz force acting in the vertical axis direction causes the support plate in the floating state to be horizontal. When the levitation position is shifted along the direction, the support plate can be tilted and the lateral displacement of the support plate can be controlled so as to return to the original levitation position.

In the article display device having the above configuration, the ring-shaped magnets arranged on the base and the support plate are arranged and fixed so as to overlap each other in a vertically symmetrical position when the base and the support plate are overlapped with the center portions aligned with each other. .. The ring-shaped magnet may be an integral donut-shaped magnet, or may be composed of a plurality of magnet groups arranged along the circumference centered on the central portion of the bottom of both discs.
From the viewpoint of member cost, the ring-shaped magnet preferably has a configuration in which eight rod-shaped magnets are arranged along the circumference centered on the central portion of the bottom of each of the base and the support plate.
Further, as the magnet built in the base and the support plate, it is preferable to use a neodymium magnet because the magnetic force is large.

Further, an infrared sensor in which an infrared light emitting part and a light receiving part are integrated is provided in the center of the inside of the board, and a reflector is attached to the center of the bottom surface of the support board so that the support board floats on the board. It is preferable to provide a detection system for.
For example, the infrared light emitted from the infrared sensor is reflected by the reflecting plate of the support plate, which is received by the light receiving portion of the infrared sensor, and the magnitude of the light receiving signal is measured to ascend to the substrate and above it. It is possible to detect whether or not the center positions of the support boards are aligned. When the floating position of the support plate is deviated, the light received by the infrared sensor is received by adjusting the applied current of the air core coil and changing the Lorentz force together with the magnetic flux of the air core coil to displace the support plate in the horizontal direction. By feedback-controlling the applied current of each air core coil based on the signal, the center position of the support plate can be accurately aligned with the center position of the board to levitate.

In the article display device having the above configuration, a magnet holding member in which a plurality of recesses or frames are connected in a ring shape is attached to the bottom of the base, and a magnet is fitted and fixed in each recess or frame of the magnet holding member. It can be configured as a magnet.
Specifically, in the attachment of the magnet to the base using the magnet holding member, a rod-shaped steel material containing neodymium iron is fitted into each recess or frame of the magnet holding member and fixed with an adhesive to the magnet holding member. This can be done by magnetizing the fixed steel material with a magnetizer and then attaching the magnet holding member to the bottom of the base.
According to this, by mounting the magnet using the magnet holding member, the magnet can be fixed to the substrate in a short time and can be fixed at an accurate mounting position. In addition, by fixing an unmagnetized steel material to a magnet holding member and then magnetizing the steel material to process it into a magnet, repulsion between magnets when a plurality of magnetized magnets are directly attached to a substrate can be achieved. The troublesome work caused by the occurrence of attraction The time and effort required for the fixing operation is eliminated, and the magnet having a large magnetic force can be fixed by a simple operation.

In addition, the manufacture of the article display device having the above configuration is
A process of fitting a rod-shaped steel material containing neodymium iron into each recess or frame of a magnet holding member in which a plurality of recesses or frames are connected in a ring shape and fixing them with an adhesive.
The process of magnetizing a rod-shaped steel material fixed to the magnet holding member, and
The process of attaching the magnet holding member to the bottom of the base after magnetization, and
The process of fixing the air core coil to the bottom of the base with an adhesive,
The process of attaching an infrared sensor that integrates an infrared light emitting part and a light receiving part to the bottom of the board,
A process of arranging a rod-shaped steel material containing neodymium iron in a ring shape on the bottom of the support plate and fixing it with an adhesive,
The process of magnetizing a rod-shaped steel material fixed to the bottom of the support plate, and
The process of attaching the reflector to the center of the bottom of the support board,
It can be manufactured through a work process including.

Further, in using the article display device having the above configuration, the operation of floating the support plate on the base is assisted by placing the auxiliary base on the upper surface of the energized base and placing the support plate on the auxiliary base. This can be done by shifting the position of the table along the upper surface of the base and removing it from the base to raise the support board onto the base, and placing the articles to be displayed on the raised support board.
By using the auxiliary stand in this way, it is possible to quickly and stably raise the support plate on the board.

It is a figure which showed the state which the article is exhibited by the article display apparatus of one Embodiment of this invention. It is external perspective view of the support board of the base of the article display apparatus of FIG. It is a figure which showed the arrangement of the magnet built in the base and the support board of FIG. It is an external view of the state in which the cover of the base and the support board of FIG. 2 is removed. It is an external perspective view of the magnet holding member. It is an external perspective view of the state where the magnet holding member which holds a magnet is attached to the bottom of the base. It is a top view of the base shown in FIG. It is an external view of the Y direction adjustment plate. It is an external view of the X direction adjustment plate. It is a top view of the support board shown in FIG. It is a block diagram of a control circuit. It is a figure which showed the mode when adjusting the mounting position of an infrared sensor. It is an external perspective view of an auxiliary stand. FIG. 13 is a plan view (A) of the auxiliary table of FIG. 13 and a cross-sectional view taken along the line BB (B) of the same figure. (A) to (D) are diagrams for explaining the procedure for floating the support plate on the board.

A preferred embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows a state in which an article is displayed by the article display device according to the embodiment of the present invention. In the article display device 1 of this embodiment, a magnetic levitation mechanism is formed by a base 2 and a support plate 3 formed by incorporating a magnet in a steel housing, both of which are conductive materials, and the article G to be exhibited is placed on the upper surface. The mounted support board 3 is magnetically levitated and supported on the base 2, and the article G is displayed as if it were floating in the air.

Specifically, as shown in FIG. 2, the base 2 of the article display device 1 has a disc-shaped bottom portion 21 to which a plurality of magnets 4 and an air core coil 6 are attached, and a cover body 22 is integrally covered with the base 2. It is formed in a disk shape. A through hole 22a is formed in the center of the cover body 22, and the upper part of the infrared sensor 8 described later is exposed here.
The support plate 3 is also formed in a disk shape with a diameter of about 2/3 of the diameter of the base 2, and has a ring-shaped cover body 32 and a disk shape on the upper surface of the bottom portion 31 to which a plurality of magnets 5 are attached. The cover body 33 of the above is attached and formed.

FIG. 3 shows the arrangement of the magnet 4 attached to the base 2 and the magnet 5 attached to the support plate 3.
As shown in the figure, eight rod-shaped magnets 4 are continuously arranged in a ring shape on the bottom portion 21 of the base 2 along the circumference centered on the central portion of the base 2. Similarly, the support plate 3 is similarly attached to the bottom portion 31 of eight rod-shaped magnets 5 arranged in a circular ring shape along the circumference centered on the central portion of the support plate 3.
The ring-shaped magnets 4 and 5 arranged on the two discs 2 and 3 are arranged so as to be substantially overlapped at a vertically symmetrical position when the base 2 and the support disc 3 are overlapped with each other centered. Further, when the magnets 4 are magnetized with the S pole on the lower side and the N pole on the upper side in the height direction so that the same poles of the magnets 4 and 5 face each other, the magnet 5 has the height thereof. The lower side in the vertical direction is attached toward the north pole, and the upper side is attached toward the south pole.

FIG. 4 shows the arrangement of members inside the base 2 and the support board 3.
As shown in the figure, a magnet holding member 7 is attached to the upper surface of the bottom portion 21 of the base 2, and a magnet 4 and an air core coil 6 are fixed side by side to the magnet holding member 7, and a magnet is also used. An infrared sensor 8 is attached to the inside of the holding member 7.
Further, magnets 5 are arranged and fixed in a ring shape along the outer periphery of the bottom portion 31 of the support plate 3.
In each diagram showing the inside of the board 2, the electric members such as the power supply unit and the control circuit are not shown.

The magnet holding member 7 is a frame material made of plastic, and as shown in FIG. 5, four recesses 71 opened downward and four frame portions penetrating vertically, which are large enough to fit the magnet 4 substantially fully. 72 and 72 are alternately connected in a ring shape, and a coil receiving portion 73 having a convex portion with which the inner peripheral surface of the air core coil 6 is engaged is integrally provided on the outside of each frame portion 72. Each coil receiving portion 73 has an end portion 73b that can be attached to and detached from the base portion 73a.
Further, a groove 74 is formed on the upper surface of the pair of recesses 71, 71 facing each other with the center of the magnet holding member 7 interposed therebetween, in which a screw for adjusting the mounting position of the infrared sensor 8 described later is embedded.

On the bottom portion 21 of the base 2, each magnet 4 fits into the recess 71 and the frame portion 72, respectively, and each air core coil 6 engages its inner circumference with the convex portion of the coil receiving portion 73, respectively. It is integrally fixed to the magnet holding member 7 by an adhesive.

The infrared sensor 8 is installed on the upper surface of the circuit board 9 with the upper portion in which the infrared light emitting portion and the receiving portion are integrally arranged facing upward.
Specifically, as shown in FIG. 7, the circuit board 9 is fixed to the Y direction adjusting plate 10A shown in FIG. 8 by the retaining screws 81, 82, 83, 84 of the sensor block of the infrared sensor 8. The Y-direction adjusting plate 10A is fixed to the X-direction adjusting plate 10B shown in FIG. 9 by four set screws. The X-direction adjusting plate 10B is fixed to the bottom 21 by four set screws.
As will be described later, the fixed positions of the Y-direction adjusting plate 10A and the X-direction adjusting plate 10B can be appropriately shifted so that the infrared sensor 8 can be adjusted to be located at the center of the magnets 4 arranged in an annular shape. It has become.

As shown in FIG. 8, the magnet 5 of the support plate 3 is a concave groove provided along the outer circumference of the bottom portion 31 of the support plate 3 and is partitioned so that the lower half of the magnet 5 is fitted. It is fitted in 31a and fixed with an adhesive.
As shown in the figure, a through hole 31b is formed in the center of the support plate 3, and a reflector 11 is attached so as to close the through hole 31b.

FIG. 11 shows a block diagram of a control circuit for floating the support board 3 on the board 2. In the figure, the code number 8a is the infrared LED of the infrared sensor 8, and 8b and 8c are the X directions of the infrared sensor 8. Optical sensor and Y-direction optical sensor, 9a is a differential amplifier, 9b is a PID control circuit, 9c is a changeover switch, 9d is an adder circuit, 9e is a P control circuit, 9f is a floating body detection circuit, and 9g is an LED drive circuit. .. Further, the code numbers 6x and 6y indicate the corresponding air core coils 6 in which magnetic fluxes are generated in the X direction and the Y direction, respectively. These circuits are mounted on the circuit board 9.

With such a control circuit block, the operation of floating the support plate 3 on the board 2 is controlled as follows.
The infrared rays emitted by the infrared LED 8a of the infrared suncer 8 are reflected by the reflecting plate 11 of the support plate 3 floating on the substrate 2, and the reflected light is the X-direction light of the infrared sensor 8 configured by using a photodiode. Light is received by the sensor 8b and the Y-direction light sensor 8c.
The optical sensors 8b and 8c in both the X and Y directions have been abolished so that signals proportional to the position of the support plate 3 are output, and the difference between the output signals of the two sensor pairs in the X and Y directions is the position information. Become.
In order to control the support board 3 so that it is located directly above the infrared suncer 8, the sensor outputs of both the X-axis and the Y-axis are independently PID-calculated, and the result is a pair of air-core coils for each of the two axes. It feeds back to the drive voltage of 6x and 6y. The infrared sensor 8 is arranged at a position centered on the air core coils 6x and 6x and the air core coils 6y and 6y, which are arranged so as to face each other.
Then, the magnets 5 arranged in a ring shape in the support plate 3 repel and attract the magnetic flux generated by the magnetic flux generated by the pair of air core coils 6x and 6y on both axes, thereby attracting the floating position of the support plate 3. Is now controlled.
If the amount of light of the optical sensors 8b and 8c in both the X and Y directions decreases, the above control cannot be performed. Therefore, the drive current of the infrared LED 8a is set by the LED drive k gyro 9 g so that the amount of reflected light becomes a constant magnitude value. I'm adjusting.
The control is stopped when the support plate 3 is not on the base 2 or when the amount of infrared rays reflected from the support plate 3 is extremely small.

The base 2 and the support plate 3 thus configured can be assembled as follows by using a steel material containing neodymium iron as the magnets 4 and 5.

(Assembly of base 2)
First, a rod-shaped steel material containing neodymium iron is fitted into each recess 71 and a frame portion 72 of the magnet holding member 7, and each steel material is integrally fixed to the recess 71 and the frame portion 72 with an adhesive.

When the adhesive dries, the magnet holding member 7 to which the steel material is fixed is placed in a magnetizer to magnetize the steel material. Magnetization is performed so that the upper and lower portions have different poles along the height direction of the steel material, for example, the lower side has an S pole and the upper side has an N pole. By magnetism, the steel material becomes a magnet 4.

Next, the magnet holding member 7 on which the steel material is magnetized is screwed to the bottom 21 of the base 2 and integrally attached. Subsequently, the air core coil 6 is engaged with each coil receiving portion 73 of the magnet holding member 7, and is integrally fixed with an adhesive.

After fixing the magnet 4 and the air core coil 6 to the bottom 21 of the board 2, the infrared sensor 8 and the circuit board 9 are attached to the bottom 21. At this time, the wiring of electric parts such as the air core coil 6, the infrared sensor 8, the circuit board 9, and the power supply installed on the bottom 21 of the board 2 is arranged.
Installation is done as follows.
The circuit board 9 on which the infrared sensor 8 is mounted on the upper surface is fixed to the Y direction adjusting plate 10A. On the other hand, the X-direction adjusting plate 10B is temporarily fixed on the bottom 21 of the base 2. For mounting, insert the screw part of the set screw into the four elongated holes 10B1 of the X-direction adjusting plate 10B, loosely screw the screwed portion into the mounting hole formed on the bottom 21, and adjust the X-direction along the elongated hole 10B1. Allow the plate 10B to be displaced in the X direction (on the bottom 21).
The Y-direction adjusting plate 10A to which the circuit board 9 is fixed is mounted on the X-direction adjusting plate 10B in a temporarily fixed state. For mounting, insert the screw part of the set screw into the four elongated holes 10A1 of the Y direction adjusting plate 10A, loosely screw the screwed portion into the mounting hole formed in the X direction adjusting plate 10B, and Y along the elongated hole 10A1. The direction adjusting plate 10A can be displaced in the Y direction.

Then, with the Y-direction adjusting plate 10A and the X-direction adjusting plate 10B temporarily fixed, as shown in FIG. 12, a voltage is applied to the device to raise the support plate 3 on the base 2, and in this state, the support plate 3 is levitated. The mounting positions of the adjusting plates 10A and 10B in both the Y and X directions are adjusted so that the mounting position of the infrared sensor 8 is at the center of the magnet 4 arranged in a ring shape.
The mounting position of the infrared sensor 8 is adjusted by passing the screw portion between the Y direction adjusting plate 10A and the X direction adjusting plate 10B and screwing them with the adjusting screw SC1 in the Y direction, and adjusting the screw portion in the X direction in the X direction. This is done with the adjusting screw SC2 screwed into the plate 10B. By changing the screwing depth of the screw from each side, the temporarily fixed Y-direction adjusting plate 10A and X-direction adjusting plate 10B are displaced along the elongated holes 10A1 and 10B1, and the infrared sensor on the circuit board 9 is displaced. The position of 8 can be adjusted.

The adjustment operation by the adjusting screws SC1 and SC2 is performed while detecting the current value of the power supply unit of the device with the support plate 3 floating, and when the current value becomes the minimum, the infrared sensor 8 is arranged in a ring shape. It is determined that the magnet 4 is located at the center of the magnet 4.
After the position of the infrared sensor 8 is determined, the retaining screws inserted into the elongated holes 10A1 and 10B1 are inserted in order to fix the temporarily fixed Y-direction adjusting plate 10A and X-direction adjusting plate 10B to the adjusting position, respectively. After tightening and fixing, the installation of the infrared sensor 8 and the circuit board 9 is completed.
After that, the assembly of the base 2 is completed by covering the bottom portion 31 with the cover body 32 and attaching the cover body 32 integrally.

(Assembly of support board 3)
First, a rod-shaped steel material containing neodymium iron is fitted into each recess 31a of the bottom 31 of the support plate 3, and each steel material is integrally fixed in the recess 31a with an adhesive.

When the adhesive dries, the bottom 31 of the support plate 3 to which the steel material is fixed is placed in a magnetizer to magnetize the steel material. Similar to the above, magnetism is performed so that the upper and lower portions have different poles along the height direction of the steel material, for example, the lower side has an N pole and the upper side has an S pole. By magnetism, the steel material becomes a magnet 5.

Next, the reflection plate 11 is attached to the through hole 31b formed in the center of the bottom portion 31 of the support plate 3, and the cover materials 32 and 33 are covered on the upper surface of the bottom portion 31 to attach the support plate 3 to complete the assembly of the support plate 3.

In the article display device 1 configured in this way, if the support plate 3 is positioned above the base 2 while the electrical components of the base 2 are energized, the same poles face each other vertically in both the boards 2 and 3. A repulsive force is generated in the vertical direction by the magnets 3 and 4 arranged in a ring shape so as to be so that the support plate 3 can be levitated on the base by applying a levitation force.
Further, the air core coils 6 arranged on the outer four sides of the magnets 4 arranged in the ring shape of the base 2 generate magnetic flux by energization, and the Lorentz force acting in the vertical axis direction causes the floating support plate 3 to be horizontal. The lateral displacement of the support plate 3 can be controlled so that the support plate 3 is tilted when the levitation position is shifted along the direction and returns to the original levitation position.
Further, the infrared sensor 8 installed in the center of the inside of the board 2 and the reflector 11 attached to the center of the bottom surface of the support board 3 form a detection system for the floating position of the support board 3 floating on the board 2. The infrared light emitted from the infrared sensor 8 is reflected by the reflecting plate 11 of the support plate 3, and this is received by the light receiving portion of the infrared sensor 8 to measure the magnitude of the light receiving signal. It detects whether or not the center position of the board 3 is aligned, and if the floating position of the support board 3 is displaced, the applied current of the air core coil 6 is adjusted to change the Lorentz force together with the magnetic flux of the air core coil 6. As a result, the support plate 3 can be displaced in the horizontal direction, and the center position of the support plate 3 can be accurately aligned with the center position of the base 2 and floated.

13 and 14 show the configuration of an auxiliary base used when the support plate 3 is levitated on the base 2.
The auxiliary base 12 is formed of a thick paper material such as corrugated cardboard, and has a notch portion 12a having a length that crosses the central portion from the outer circumference thereof in a cylindrical body having a size capable of mounting the support plate 3. Is provided to form a shape.

The auxiliary base 12 is used for an operation of floating the support plate 3 on the base 2, and as shown in FIG. 15, the auxiliary base 12 is placed on the upper surface of the energized base 2 (A). At this time, the position of the auxiliary base 12 is adjusted so that the through hole 22a formed in the center of the cover body 22 of the base 2 is located in the notch portion 12a.
Next, the support board 3 is placed on the auxiliary stand 12 (B). At this time, the position of the support plate 3 is adjusted so that the central portion of the support plate 3 is aligned with the through hole 22a which is the center of the base 2.
When the central portion of the base 2 and the support plate 3 above it are aligned in the vertical direction, the levitation force due to the magnetic force acts stably on the support plate 3, and in this state, the auxiliary base 12 is slid horizontally on the base 2. If it is removed from (C), the state in which the support plate 3 is levitated on the base 2 can be stably maintained (D). Then, by placing the article G to be displayed on the surfaced support board 3, the article G can be effectively exhibited.

The illustrated article display device 1, the base 2, and the support board 3 are examples, the magnets 4 and 5 are in the form and their arrangement, the air core coil 6 is in the form and its arrangement, and the like, and the present invention is the embodiment. It is not limited to the configuration shown in.

1 Article display device, 2 base, 3 support board, 4, 5 magnet, 6 air core coil, 7 magnet holding member, 8 infrared sensor, 9, 10 mounting plate, 11 reflector, G article

Claims (9)

In an article exhibition device in which a base with a built-in magnet and a support plate form a magnetic levitation mechanism, and a support plate on which an exhibition article is placed is magnetically levitated and supported on the base.
The magnetic levitation mechanism is located at at least four positions of the annular magnet fixed to the base and the bottom of the support plate, the annular magnet fixed to the substrate, and the outside of the annular magnet. An article display device having a configuration including a fixed air-core coil. Claim 1 is characterized in that the annular magnets fixed to the bottoms of the base and the support plate are composed of a plurality of magnets arranged along the circumference centered on the central portion of each bottom. Article display device described in. The article display device according to claim 1 or 2, further comprising a configuration in which eight rod-shaped magnets are arranged along a circumference centered on the central portion of the bottom of each of the base and the support board. The article display device according to any one of claims 1 to 3, wherein the magnet incorporated in the base and the support board is a neodymium magnet. Claims 1 to 4 include a configuration in which an infrared sensor in which an infrared light emitting portion and a receiving portion are integrated is provided in the center of the inside of the substrate, and a reflector is attached to the center of the bottom surface of the support plate. The article display device described in any of the above. A magnet holding member in which a plurality of recesses or frame portions are connected in a ring shape is attached to the bottom portion of the base, and the magnet is fitted and fixed in each recess or frame portion of the magnet holding member. The article display device according to any one of claims 1 to 5. In a method of manufacturing an article display device in which a base having a built-in magnet and a support plate form a magnetic levitation mechanism, and a support plate on which an exhibition article is placed is magnetically levitated and supported on the base.
Attaching the magnet to the board
A rod-shaped steel material containing neodymium iron is fitted into each recess or frame of a magnet holding member in which a plurality of recesses or frames are connected in a ring shape and fixed with an adhesive, and the steel material fixed to the magnet holding member is attached. A method for manufacturing an article display device, which is performed by attaching the magnet holding member to the bottom of a base after magnetizing. In a method of manufacturing an article display device in which a base having a built-in magnet and a support plate form a magnetic levitation mechanism, and a support plate on which an exhibition article is placed is magnetically levitated and supported on the base.
A process of fitting a rod-shaped steel material containing neodymium iron into each recess or frame of a magnet holding member in which a plurality of recesses or frames are connected in a ring shape and fixing them with an adhesive.
The process of magnetizing a rod-shaped steel material fixed to the magnet holding member, and
The process of attaching the magnet holding member to the bottom of the base after magnetization, and
The process of fixing the air core coil to the bottom of the base with an adhesive,
The process of attaching an infrared sensor that integrates an infrared light emitting part and a light receiving part to the bottom of the board,
A process of arranging a rod-shaped steel material containing neodymium iron in a ring shape on the bottom of the support plate and fixing it with an adhesive,
The process of magnetizing a rod-shaped steel material fixed to the bottom of the support plate, and
The process of attaching the reflector to the center of the bottom of the support board,
A method of manufacturing an article display device, which comprises. The method of using the article display device according to any one of claims 1 to 6.
Place the auxiliary stand on the upper surface of the energized board
With the support plate placed on this auxiliary base, the position of the auxiliary base is shifted along the upper surface of the base and removed from the base to raise the support plate onto the base.
A method of using an article display device, which comprises placing an article to be displayed on a surfaced support board.

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