JPH05188872A - Rotary type display device - Google Patents

Abstract

PURPOSE:To smoothly control the rotation of a display rotating body and to precisely position a display surface with respect to a display direction. CONSTITUTION:When an electromagnet 31 is magnetized to N under a state that a non-display surface 27 is displayed by the display rotating body 21, the potential energy of the display rotating body is changed. Then, repulsive force acts on the N pole of a permanent magnet 22 and attracting force acts on the S pole. Besides, rotational force acts on the display rotating body and the display rotating body is started to be rotated in a direction shown by an arrow A. At the same time that the display rotating body is started to be rotated, the rotational force acts also in a direction shown by an arrow B by a ferromagnetic plate 30 to 90 deg.. When the rotational angle of the display rotating body exceeds 90 deg., the magnetization of the electromagnet is stopped after the angular velocity of the display rotating body sufficiently becomes small before it is rotated to 180 deg.. Then, when the potential energy of the display rotating body is returned to a state that it is not magnetized, the display rotating body is kept at a position where the display surface 26 is displayed while it is attenuated and moved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary display device used for displaying image information, for example.

[0002]

2. Description of the Related Art A rotary display device of this type is disclosed in, for example, Japanese Patent Laid-Open No. 63-287822 or Japanese Patent Laid-Open No.
The thing of the 159685 gazette is known.

As shown in FIG. 33, the former is a two-sided display type having a display surface and a non-display surface, a display segment 1 is of a cylindrical shape, and a cylindrical permanent magnet 2 is provided therein as shown in the drawing. The S pole is opposed to the display surface 1s side, the N pole is opposed to the non-display surface 1n side, and the rotary shaft 3,
3 is provided. A plurality of such display segments 1 are supported on a frame 4 by a rotating shaft 3 so that their rotation directions and axial directions are orthogonal to each other. A coil winding yoke 5 is arranged on the rear side of each display segment 1. When the coil winding yoke 5 is excited to the S pole, the N pole side of the display segment 1 is attracted to the coil winding yoke 5, and the display surface 1s appears on the surface, that is, in the display direction.
When the coil winding yoke 5 is excited to the N pole, the S pole side of the display segment 1 is attracted to the coil winding yoke 5,
The non-display surface 1n appears on the surface.

In the latter case, as shown in FIG.
The display body 11 is of a four-sided display type divided into two parts. The display body 11 has a hollow cylindrical shape and its outer peripheral surface is colored in four colors, and a permanent magnet 12 is provided therein and is rotatably supported by a substrate 13. The permanent magnets 12 are attached to the ends of the display bodies 11 in a substantially disc shape, and the respective display bodies 11 are arranged so that the permanent magnets 12 therein are not close to each other. Then, two electromagnets 14 and 15 are attached to the substrate 13 so as to face the permanent magnet 12. When the electromagnets 14 and 15 are excited to N and N, the S pole of the permanent magnet 12 is attracted to the electromagnets 14 and 15 and the display surface 11a is displayed. Next, set the electromagnets 14 and 15 to N and S.
When excited, the S pole and N pole of the permanent magnet 12 are attracted to the electromagnets 14 and 15, respectively, and the display surface 11b is displayed. When the electromagnets 14 and 15 are excited to S and S, the N pole of the permanent magnet 12 is attracted to the electromagnets 14 and 15 and the display surface 1
1c is displayed. Next, when the electromagnets 14 and 15 are excited to S and N, the north pole and the south pole of the permanent magnet 12 are attracted to the electromagnets 14 and 15, respectively, and the display surface 11d is displayed.

[0005]

However, in the former case, since the magnetic poles of the permanent magnet 2 face the coil winding yoke 5, even if the coil winding yoke 5 is excited to the same pole as the permanent magnet 2. However, there is a problem that the display segment 1 may not rotate depending on the state of the display segment 1. . Further, there is no structure for holding the display segment 1 in the display or non-display state in the state where the coil winding yoke 5 is not excited, and there is a frictional force between the rotating shaft 3 and the frame 4, so that the display surface is 1
However, there is a problem that the positioning of the non-display surface 1n in the display direction becomes inaccurate.

In the latter case, since the permanent magnet 12 is smaller than the display body 11 and the electromagnets 14 and 15 are also small, there is a problem that the rotational force is weak and it takes time to switch the display surface. Further, it is difficult to sufficiently hold the display body 11 only with the cores of the electromagnets 14 and 15 in the non-excited state.
Since there is a frictional force between the rotating shaft and the substrate 13, the positioning of each display surface in the display direction is inaccurate. Furthermore, there is a problem that the number of parts is large, and therefore the number of assembling steps is large and the cost is high.

Therefore, the present invention is intended to provide a rotary display device capable of smoothly controlling the rotation of the display rotating body, accurately positioning the display surface in the display direction, and having a simple structure and improving the economical efficiency. Is.

Another object of the present invention is to provide a rotary type display device which can reset the display surface to an initial state by further using one electromagnet.

[0009]

The invention according to claim 1 is
The outer peripheral surface is a permanent magnet whose peripheral surface is divided into two surfaces, a display surface and a non-display surface, and which is magnetized so that one boundary between the display surface and the non-display surface is an N pole and the other boundary is an S pole. A display rotor that is disposed along the display rotor, a support that rotatably supports the display rotor, an electromagnet that is disposed to face the outer peripheral surface of the display rotor, and an electromagnet that is disposed so as to sandwich the outer peripheral surface of the display rotor. And a ferromagnetic plate for rotating the display rotor by switching the excitation of the electromagnet.

The invention according to claim 2 further comprises reset control means for performing specific excitation control of the electromagnet to forcibly set the display of the display rotor on the display surface or non-display surface.

According to a third aspect of the present invention, the outer peripheral surface is divided into four display surfaces in the circumferential direction, and the display rotation is magnetized into four poles so that the center of the magnetic pole is located at the boundary of each display surface. A body, a support body that rotatably supports the display rotating body, an electromagnet that is arranged to face the outer peripheral surface of the display rotating body, and a ferromagnetic plate that is arranged so as to sandwich the outer peripheral surface of the display rotating body. In other words, the display rotor is driven to rotate by controlling the excitation and non-excitation of the electromagnet.

According to a fourth aspect of the present invention, the outer peripheral surface is divided into four display surfaces in the circumferential direction, and the boundary between the N pole and the S pole is located on one of the display surfaces facing each other and the other surface is located on the other side. A display rotor that is magnetized into 6 poles N, N, N, S, S, and S such that the N pole and the S pole are located on opposing display surfaces, and a support that rotatably supports the display rotor. Body and
A pair of electromagnets arranged to face the outer peripheral surface of the display rotor,
The display rotor is composed of ferromagnetic plates arranged so as to sandwich the outer peripheral surface of the display rotor, and the display rotor is rotationally driven by switching the excitation of each electromagnet.

[0013]

In the inventions corresponding to claims 1 and 2, the display rotor is held at a position where the magnetic pole faces the ferromagnetic plate due to magnetic interaction with the ferromagnetic plate in the non-excited state. Even if there is some friction in the rotation of the display rotor, the display surface or the non-display surface is reliably positioned in the display direction of the display rotor. The ferromagnetic plate prevents the lines of magnetic force generated by the excitation of the electromagnet and the lines of magnetic force generated by the display rotor from leaking to the outside. Further, when the display rotor is in the display or non-display state, the magnetic pole boundary of the display rotor faces the electromagnet. Then, by exciting the electromagnet for a certain period of time, the display rotor rotates smoothly.

According to the second aspect of the invention, the display state of the display rotating body can be forcibly reset to the display or non-display state by exciting the electromagnet for a certain period of time for which the exciting magnetic property is determined.

In the invention according to claim 3, the display rotor is held at a position where the magnetic pole boundary faces the ferromagnetic plate due to magnetic interaction with the ferromagnetic plate in the non-excited state. Even if there is some friction in the rotation of the display rotor, one of the four display surfaces is reliably positioned in the display direction of the display rotor. When the display rotor is displaying one of the four display surfaces, the magnetic pole boundary of the display rotor faces the electromagnet. Then, when the electromagnet is excited to a certain pole for a certain period of time, the display rotating body moves 90 degrees or-
By rotating 90 degrees, the adjacent display surfaces are positioned in the display direction.

In the invention according to claim 4, even when each electromagnet is in a non-excited state when the boundary between the N pole and the S pole of the display rotating body is at a position facing the ferromagnetic material plate, the vicinity of the boundary is maintained. The magnetic flux emitted from the N pole can flow into the S pole via the ferromagnetic plate, so that the display rotor is stably held by the magnetic interaction with the ferromagnetic plate. As a result, the display surface of the display rotator is reliably positioned in the display direction not only when the electromagnets are in the excited state but also in the non-excited state.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 21 denotes a display rotator, and this display rotator 21 magnetizes a cylindrical permanent magnet 22 in a direction perpendicular to the cylinder axis, and a ring 2 made of a ferromagnetic material on both end faces thereof.
3 is adhered, and further the rotary bearing 24 is adhered. A seal 25 is provided on the outer peripheral surface of the permanent magnet 22, and a display surface 26
And the non-display surface 27 are attached so that the boundary between them and the non-display surface 27 becomes the center of the magnetic pole of the permanent magnet 22.

As shown in FIGS. 2 to 4, a large number of the display rotators 21 are continuously provided on a rotary support shaft 28, and the rotary support shaft 28 is fixed to a frame 29. Further, a ferromagnetic plate 30 is fixed to the frame 29 so as to sandwich the display rotating body 21.

Reference numeral 31 is an electromagnet in which a coil 31b is wound around a core 31a by, for example, a unifilar winding.
Is fixed in the frame 29 so as to face the outer peripheral surface of the display rotating body 21.

The ferromagnetic plate 30 prevents lateral magnetic interference by the permanent magnet 22, and the ring 23 prevents magnetic interference by the permanent magnet 22 in the rotation support axis direction.

In such a structure, the display rotating body 2
1 is a position where the magnetic pole of the permanent magnet 22 faces the ferromagnetic plate 30 due to magnetic interaction with the ferromagnetic plate 30 in a non-excited state where the excitation of the electromagnet 31 is stopped, that is, in FIG. It is stably held in position a) or (c). At this time, the display rotating body 21 has potential energy as shown in FIG. That is, if 0 degrees is the non-display position, 180 degrees is the display position, and conversely, if 0 degrees is the display position, 180 degrees is the non-display position.

In the non-excited state, the display rotor 21 also has a magnetic interaction with the core 31a of the electromagnet 31, but it is much smaller than the magnetic interaction with the ferromagnetic plate 30 and neglected. it can.

Now, the display rotor 21 is in the state of FIG.
That is, the non-display surface 27 is in the non-display state with the display direction, and the position is set to 0 degree. At this time, the display rotating body 21 has potential energy as shown in FIG.

When the electromagnet 31 is excited to N in this state,
The tentative energy of the display rotor 21 is shown in Fig. 6 (a).
6 and the potential energy in the non-excited state
The potential energy as shown in (c) of FIG. 6 is obtained by superimposing the potential energy due to the magnetic interaction between the electromagnet 31 and the display rotor 21 shown in (b). When the electromagnet 31 is excited to N, the permanent magnet 2
Since the repulsive force acts on the N pole of 2 and the attractive force acts on the S pole of FIG.
Rotational force acts on the display rotor 21 of (a) in the direction of arrow A, and the display rotor 21 starts rotating in the direction of arrow A.

At the same time when the display rotor 21 starts to rotate, a rotating force acts in the direction of arrow B by the ferromagnetic plate 30 up to 90 degrees, but if the electromagnet 31 is excited enough, the display rotor 21 will rotate. When it rotates in the direction of A, the state of FIG. And display rotating body 2
When the rotation angle of 1 exceeds 90 degrees, the excitation of the electromagnet 31 is stopped after the angular velocity (kinetic energy) of the display rotating body 21 becomes sufficiently small before rotating to 180 degrees.
The potential energy of the display rotor 21 is shown in FIG.
When returning to the state of, the display rotor 21 is in the state of (c) of FIG. 5, that is, the state where the display surface 26 is positioned in the display direction while performing the damping motion, and the potential energy shown in (a) of FIG. This state is maintained. In this way, the rotation of the display rotor 21 is smoothly controlled by the action of the potential energy, and the display surface 26 is accurately positioned in the display direction.

Further, when the electromagnet 31 is excited to S in the non-display state of FIG. 5A, at this time, the display rotating body 21
On the contrary, the rotating force acts in the direction of the arrow B, and the display rotating body 2
1 rotates in the direction of arrow B, but finally (c) in FIG.
As shown in, the display state is reversed by rotating 180 degrees, as in the case of N-pole excitation.

On the contrary, when the display rotor 21 is inverted from the display state to the non-display state, the electromagnet 31 may be excited to N or S.

As described above, by exciting one electromagnet 31 to either N or S, the display rotor 21 can be easily inverted. Therefore, the winding of the electromagnet 31 may be a unifilar winding even when matrix wiring is performed. When the electromagnet must be excited by both N and S, the winding must be bifilar winding when matrix wiring is performed. When the electromagnet is directly driven, the winding may be a unifilar winding.

Further, since the ferromagnetic plate 30 prevents magnetic interference between the display rotors 21, neither the permanent magnet 22 nor the electromagnet 31 needs to be so small, so that it is sufficient for smooth rotation. A rotating force can be generated.

Further, the number of electromagnets used is one, and the display rotor 21 also magnetizes a cylindrical permanent magnet 22 in a direction perpendicular to the cylinder axis, and has a ring 23 made of a ferromagnetic material and a rotary bearing on both end faces thereof. 24 is bonded and the permanent magnet 22
The seal 25 is attached to the outer peripheral surface of the display rotor 26 so that the boundary between the display surface 26 and the non-display surface 27 becomes the center of the magnetic pole of the permanent magnet 22.
Even if both sides of the outer peripheral surface are sandwiched, the number of parts used can be relatively small, the configuration is simple and the economical efficiency can be improved.

Next, another embodiment of the present invention will be described with reference to the drawings. The same parts as those in the above embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

FIG. 7 shows a cylindrical permanent magnet 22.
Is magnetized in a direction perpendicular to the cylindrical axis, and a ring 23 made of a ferromagnetic material is adhered to both end surfaces of the magnet, and a seal 2 is provided on the outer peripheral surface.
5, the boundary between the display surface 26 and the non-display surface 27 is the permanent magnet 2
The display rotor 2 is attached so that it is located at the center of the magnetic pole 2
It comprises 1 '.

As shown in FIGS. 8 to 10, a plurality of display rotating bodies 21 'are continuously provided on a rotary support shaft 32 having a diameter slightly smaller than the inner diameter.

In this way, the rotary bearing 24 can be omitted from the display rotary body.

Even with such a configuration, the display rotating body 2
The rotation control of 1'is performed in the same manner as in the above embodiment. Therefore, the same effect as that of the above embodiment can be obtained.

FIG. 11 shows a cylindrical permanent magnet 2
2 is magnetized in a direction perpendicular to the cylindrical axis, and a rotary shaft support plate 34 having a rotary shaft 33 as a center is adhered to both end faces thereof, but a seal 25 is provided on the outer peripheral surface of the display surface 26 and the non-display surface 27. The display rotor 21 ″ is configured so that the boundary is located at the center of the magnetic pole of the permanent magnet 22.

As shown in FIGS. 12 to 14, the rotary shafts 33 of the plurality of display rotary bodies 21 "are rotatably supported by the frame 29, and each display rotary body 21" is surrounded by four sides in a ferromagnetic manner. A body plate 30 is arranged.

In this way, the display rotating body is replaced by the ring 2
3 can be omitted.

Even with such a configuration, the display rotating body 2
The 1 "rotation control is performed in the same manner as in the above embodiment. Therefore, the same effect as that in the above embodiment can be obtained.

In FIG. 15, the electromagnet 31 is arranged so as to oppose to the left and right of the axis of the display rotor 21, for example, leftward.

Even when the electromagnet 31 is arranged in this way, the operation in the non-excited state is the same as that of the above-mentioned embodiment.

When the display rotor 21 is in the state of FIG. 15A, that is, in the non-display state, when the electromagnet 31 is excited to N, the potential energy of the display rotor 21 becomes as shown in FIG. 16), the potential energy in the non-excited state and the potential energy due to the magnetic interaction between the electromagnet 31 and the display rotor 21 shown in (b) of FIG. 16 are superposed. For example, as shown in (c) of FIG. Potential energy. When the electromagnet 31 is excited by N, a repulsive force acts on the N pole of the permanent magnet 22 and an attractive force acts on the S pole, and a rotational force acts on the display rotor 21 in the direction of arrow A, and the display rotor 21 moves in the direction of arrow A. To start rotating.

At the same time when the display rotor 21 starts to rotate, a rotating force acts in the direction of arrow B by the ferromagnetic plate 30 up to 90 degrees, but if the electromagnet 31 is excited sufficiently strongly, the display rotor 21 will rotate. It will rotate in the direction of A and will eventually exceed 90 degrees. And the rotation angle of the display rotor 21 is 90.
If the angular velocity (kinetic energy) of the display rotor 21 becomes sufficiently small before it rotates up to 180 degrees when it exceeds 180 degrees, the excitation of the electromagnet 31 is stopped and the potential energy of the display rotor 21 is changed to that shown in FIG. When the display rotor 21 returns to the state of FIG.
State, that is, the state where the display surface 26 is positioned in the display direction, and this state is maintained by the potential energy shown in FIG.

When the electromagnet 31 is excited to S in this state,
The repulsive force acts on the S pole of the permanent magnet 22 and the attractive force acts on the N pole, and the rotating force acts on the display rotor 21 in the direction of arrow A.
1 starts rotating in the direction of arrow A. In this way, the display rotating body 21 can be inverted from the display state to the non-display state.

Further, in the state of FIG. 15 (a), the electromagnet 3
When 1 is excited to S, the display rotor 21 starts rotating in the direction of arrow B, but compared with the case where it is excited to N, the electromagnet 3
Since 1 is biased, the rotational force is small and the excitation condition becomes severe.

Further, the display rotating body 21 is shown in FIG.
When the electromagnet 31 is excited to S to a certain extent and for a certain length of time in the state of (b), that is, when the specific excitation control is performed, the state of (c) of FIG. 15 is maintained. Here, when the excitation of the electromagnet 31 is stopped and the potential energy of the display rotor 21 is returned to the state of FIG. 16 (a), the display rotor 21 performs the damping motion, that is, the state of FIG. 15 (a), that is, It will be hidden and retained. As a result, the display state can be reversed to the non-display state while keeping the non-display state. That is, the non-display state can be forcibly set, and for example, if the non-display state is set as the initial state, the initial state can be reset. Therefore, when a large number of display rotors 21 are arranged in a panel shape, it is possible to initially reset all the display rotors 21 to the non-display state.

In FIG. 17, a cylindrical permanent magnet 36 is used as the display rotary member 35 in the direction perpendicular to the cylindrical axis N,
It is magnetized into four poles of S, N and S, and a ring 23 made of a ferromagnetic material is adhered to both end faces of the magnet, and a rotary bearing 24 is adhered to the magnet. Further, for example, white, red,
A seal 37, which is divided into blue and yellow display surfaces, is attached so that the center of the magnetic pole of the permanent magnet 36 is located at the boundary between the display surfaces.

In the non-excited state, the display rotator 35 is magnetically interacted with the ferromagnetic plate 30 so that the display surface faces the ferromagnetic plate 30, that is, white, red, blue and yellow. It is stably held in the state of being positioned in the display direction. For example, it is stably held in the states of (a) and (c) of FIG. At this time, the potential energy of the display rotor 35 is as shown in FIG.
It becomes as shown in (a).

Now, the display rotating body 35 is in the state of FIG. 18A, that is, the position displaying white, and this position is set to 0 degree. When the electromagnet 31 is excited to N in this state,
The potential energy of the display rotating body 35 is equal to that of the electromagnet 3
19 by the magnetic interaction between 1 and the display rotating body 35.
The potential energy shown in FIG. 19C is obtained by superimposing the potential energy shown in FIG. 19B and the potential energy in the non-excitation state shown in FIG. 19A. When the electromagnet 31 is excited to N, the permanent magnet 3
Since the repulsive force acts on the N pole of 6 and the attractive force acts on the S pole, the rotating force acts on the display rotor 35 in the direction of the arrow A, and the display rotor 35 is rotated.
Starts rotating in the direction of arrow A. At the same time that the display rotor 35 starts to rotate, the ferromagnetic plate 30 exerts a rotational force in the direction of arrow B up to 45 degrees, but if the electromagnet 31 is excited sufficiently strongly, the display rotor 21 will rotate in the direction of arrow A. Then, the state of FIG. 18 (b) is reached and the angle exceeds 45 degrees. When the rotation angle of the display rotor 35 exceeds 45 degrees, the excitation of the electromagnet 31 is stopped after the angular velocity (kinetic energy) of the display rotor 35 becomes sufficiently small before rotating to 90 degrees. When the potential energy of is returned to the state of (a) of FIG. 19, the display rotor 35 is in the state of (c) of FIG. 18, that is, the state where the yellow display surface is positioned in the display direction while performing the damping motion, Of FIG.
This state is held by the potential energy shown in (a).

Next, when the electromagnet 31 is excited to S in this state, the display rotator 35 is further rotated 90 degrees so that the blue display surface is positioned in the display direction, and the potential shown in FIG. It is held in this state by energy. Next, when the electromagnet 31 is excited to N in this state, the display rotating body 35 is further rotated by 90 degrees so that the red display surface is positioned in the display direction, and the potential energy shown in (a) of FIG. Held in a state. Next, when the electromagnet 31 is excited to S in this state, the display rotor 35
Is further rotated by 90 degrees so that the white display surface is positioned in the display direction, and is held in this state by the potential energy shown in FIG. 19 (a).

In this way, the display rotating body 35 makes one rotation, and the display surfaces of four colors are switched. If the N and S excitation order of the electromagnet 31 is reversed, white, red, blue,
The display can be switched in the order of yellow.

Even in the case where the display rotor 35 is rotated in 90 degree units using the four magnetized permanent magnets 36 to display four colors, the display rotor 35 is smoothed by the action of potential energy. The rotation is controlled and the respective display surfaces are accurately positioned in the display direction.

In FIG. 20, the ferromagnetic material 38 is arranged in a part of the rotary support shaft 32 for rotatably supporting the display rotary body 21 'shown in FIGS.

In such a configuration, if the force acting between the ferromagnetic body 38 and the display rotating body 21 'is F, the mass of the display rotating body 21' is m, and the gravitational acceleration is g, F becomes approximately mg. By arranging the ferromagnetic material 38 in the above, the friction generated on the display rotating body 21 'in a non-excited state becomes extremely small, and the display positioning of the display rotating body 21' becomes more accurate.

21 to 24, a display rotor 39 or a four-pole magnet having a seal 25 divided into a display surface 26 and a non-display surface 27 is attached to the outer peripheral surface of a permanent magnet 22 magnetized in two poles. A display rotating body 40 in which a seal 37 divided into four color display surfaces is attached to an outer peripheral surface of a magnetized permanent magnet 36 is housed in a plurality of chambers 41 formed in a frame 29.
Each room 41 is surrounded by a ferromagnetic plate 30 on its peripheral surfaces except the surface in the display direction and the surface on the opposite side, so that each display rotor 39 (or 40) can rotate in the circumferential direction in the room 41. It has become. A transparent plate 42 is attached to the surface in the display direction.

FIG. 25 shows a rotary display device having such a structure.
When the display direction is horizontal as shown in, the upper ferromagnetic plate 30a and the display rotor 39 (or 4) are used.
0), the force acting between F ₁ is F ₁ , the force acting between the lower ferromagnetic plate 30 b and the display rotor 39 (or 40) is F ₂ , the mass of the display rotor 39 (or 40) is m, When the gravitational acceleration is g, the upper ferromagnetic plate 30a is arranged closer to the display rotor 39 (or 40) than the lower ferromagnetic plate 30b so that F ₁ −F ₂ is approximately mg. Then, the display rotor 39 (or 40) is smoothly rotated in the room 41 by the operation of the electromagnet 31 without any friction, and the display is switched. Moreover, the rotation support shaft is unnecessary. In this case also, in the non-excited state, the display rotor 39 (or 40) is accurately held at the display position by the potential energy.

In the structure shown in FIG. 26, the outer peripheral surface is 4 in the circumferential direction.
The display surface is divided into two display surfaces, and the boundary between the N pole and the S pole is located on one of the display surfaces facing each other, and the N pole and the S pole are located on the other facing display surface, respectively. N, N, S, S, S, 6-pole magnetized display rotor 51, a rotary support shaft 52 for rotatably supporting the display rotor 51, and an opposing arrangement on the outer peripheral surface of the display rotor 51. Paired electromagnets 53 and 54 and the display rotating body 51
Ferromagnetic plates 55, 56 arranged so as to sandwich the outer peripheral surface of the
The electromagnets 53 and 54 are mounted on a base 57, and the ferromagnetic plates 55 and 56 are adhered to the side surface of the base 57.

As shown in FIG. 27, the display rotating body 51 has, for example, white, red, and blue on the outer peripheral surface of a cylindrical permanent magnet 58 magnetized with 6 poles of N, N, N, S, S, and S. , A yellow seal is attached to each of the four yellow display surfaces.

The permanent magnet 58 is replaced by N, N, N, S, S,
To magnetize the 6 poles of S, first, as shown in FIG. 28, a cylindrical permanent magnet 58 is magnetized into 2 poles with a uniform magnetic field in a direction perpendicular to the cylindrical axis, for example, a magnetic field in an air-core coil. To do.

Next, as shown in FIG. 29, a magnetizing yoke 62 in which a conductive wire 61 is wound around an inner yoke 60 is inserted into the permanent magnet 58 so that the position of the conductive wire 61 is located at the boundary between the magnetic poles of the permanent magnet 58. This is covered with a cylindrical outer yoke 63, and a current in the direction indicated by the arrow in the drawing is passed through the conducting wire 61 to magnetize it. That is, a magnetic flux as shown in FIG. 30 is generated around the conducting wire 61, and the magnetic poles of the permanent magnets 58 border the N pole and the S pole.
The poles are clearly magnetized.

Thus, as shown in FIG. 31, the permanent magnet 58 becomes a magnet having 6 poles N, N, N, S, S, S.

In the embodiment having such a structure, when the electromagnet 53 is excited to the N pole and the electromagnet 54 is excited to the S pole, the S pole of the display rotor 51 is attracted to the electromagnet 53 and the N pole is attracted to the electromagnet 54. Therefore, the display rotating body 51 is shown in FIG.
The state shown in (a) is obtained. At this time, white is displayed.

Next, when the electromagnet 53 is switched from the N pole to the S pole in this state, the N pole of the display rotating body 51 is changed to the electromagnets 53 and 5.
4 is attracted to both sides of the display rotor 51, the display rotor 51 shown in FIG.
The state shown in (b) is reached. At this time, red is displayed.

Next, when the electromagnet 54 is switched from the S pole to the N pole in this state, the N pole of the display rotor 51 is attracted to the electromagnet 53 and the S pole is attracted to the electromagnet 54. The state shown in FIG. 32 (c) is obtained. At this time, blue is displayed.

In this state, when the electromagnet 53 is next switched from the S pole to the N pole, the S pole of the display rotating body 51 is changed to the electromagnets 53 and 5.
4 is attracted to both sides of the display rotor 51, the display rotor 51 shown in FIG.
The state shown in (d) is reached. At this time, yellow is displayed.

In this way, the display rotator 51 rotates once, and the four color display surfaces are switched.

The state shown in FIG. 32 (a) and the state shown in FIG.
When the electromagnets 53, 54 are de-energized in the state shown in (c), the magnetic poles of the permanent magnet 58 face the ferromagnetic plates 55, 56, and therefore the display rotor 51 is magnetically interacted with each other.
Stops steadily.

The state shown in FIG. 32B and the state shown in FIG.
When the electromagnets 53, 54 are de-energized in the state shown in (d), the boundary between the N pole and the S pole of the permanent magnet 58 is the ferromagnetic plate 5.
As shown in the figure, the magnetic flux generated from the N pole can flow into the S pole through the ferromagnetic plates 55 and 56 as shown in FIG. Stop.

As described above, the display rotor 51 is stably stopped regardless of the display position of the display rotor 51 where the electromagnets 53 and 54 are deenergized, and when the electromagnets 53 and 54 are deenergized. The display can be positioned accurately.

Of course, also in this embodiment, the display rotary member 51 is used.
Rotation can be smoothly controlled, and the display rotor 51 can be accurately positioned in the display direction by switching the excitation of the electromagnets 53 and 54.

[0072]

As described in detail above, according to the present invention, the rotation of the display rotating body can be smoothly controlled, the display surface can be accurately positioned in the display direction, and the structure is simple and the economy can be improved. The display device can be provided.

Further, according to the present invention, it is possible to provide a rotary type display device which can reset the display surface to an initial state, using one electromagnet.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a display rotating body according to an embodiment of the present invention.

FIG. 2 is a partial plan view of the same embodiment.

FIG. 3 is a partial front sectional view of the embodiment.

FIG. 4 is a partial side sectional view of the same embodiment.

FIG. 5 is a view for explaining the operation of the display rotating body according to the embodiment.

FIG. 6 is a diagram showing potential energy of the display rotating body of the embodiment.

FIG. 7 is a diagram showing a configuration of a display rotating body according to another embodiment of the present invention.

FIG. 8 is a partial plan view of the other embodiment.

FIG. 9 is a partial front sectional view of the other embodiment.

FIG. 10 is a partial side sectional view of the other embodiment.

FIG. 11 is a diagram showing a configuration of a display rotating body according to another embodiment of the present invention.

FIG. 12 is a partial plan view of the other embodiment.

FIG. 13 is a partial front sectional view of the other embodiment.

FIG. 14 is a partial side sectional view of the other embodiment.

FIG. 15 is a view for explaining the operation of the display rotating body according to the other embodiment.

FIG. 16 is a diagram showing potential energy of a display rotating body according to another embodiment.

FIG. 17 is a diagram showing a configuration of a display rotating body according to still another embodiment of the present invention.

FIG. 18 is a view for explaining the operation of the display rotating body according to the embodiment.

FIG. 19 is a diagram showing potential energy of a display rotating body according to another embodiment.

FIG. 20 is a diagram showing a configuration of a main part of still another embodiment of the present invention.

FIG. 21 is a diagram showing the configuration of a display rotating body according to still another embodiment of the present invention.

FIG. 22 is a partial plan view of the other embodiment.

FIG. 23 is a partial front sectional view of the other embodiment.

FIG. 24 is a partial side sectional view of the other embodiment.

FIG. 25 is a partially enlarged side sectional view of the other embodiment.

FIG. 26 is a partial perspective view of still another embodiment of the present invention.

FIG. 27 is a diagram showing a configuration of a display rotating body according to another embodiment.

FIG. 28 is a view for explaining magnetization of permanent magnets in another example.

FIG. 29 is a view for explaining magnetization of permanent magnets in another example.

FIG. 30 is a diagram for explaining magnetization of permanent magnets in the other example.

FIG. 31 is a diagram showing a relationship between a magnetized state of a permanent magnet and a display surface in the other example.

FIG. 32 is a view for explaining the operation of the display rotating body according to the other embodiment.

FIG. 33 is a diagram for explaining a conventional example.

FIG. 34 is a diagram for explaining a conventional example.

[Explanation of symbols]

21 ... Rotating display body, 22 ... Permanent magnet, 25 ... Seal, 2
6 ... Display surface, 27 ... Non-display surface, 28 ... Rotating support shaft, 30
... ferromagnetic material plate, 31 ... electromagnet.

Claims (4)

[Claims] 1. A display surface and a non-display surface on the outer peripheral surface in the circumferential direction.
And a display rotor, in which a permanent magnet having a boundary between the display surface and the non-display surface, which is magnetized to have an N pole at one boundary and the other boundary to have an S pole, is arranged along the outer peripheral surface. A rotatably supporting member, an electromagnet arranged to face the outer peripheral surface of the display rotating body, and a ferromagnetic plate arranged so as to sandwich the outer peripheral surface of the display rotating body. A rotary type display device characterized in that the display rotating body is driven to rotate by switching excitation. 2. An outer peripheral surface is divided into a display surface and a non-display surface in the circumferential direction.
A display rotor that is divided into surfaces and is magnetized at one boundary between the display surface and the non-display surface as an N pole and at the other boundary as an S pole;
A support body that rotatably supports the display rotating body, an electromagnet that is disposed on the outer peripheral surface of the display rotating body so as to be offset from the axis of the display rotating body to the left and right, and the outer peripheral surface of the display rotating body are sandwiched. And a reset control means for forcibly setting the display of the display rotating body on the display surface or the non-display surface by controlling the specific excitation of the electromagnet and switching the excitation magnetic polarity of the electromagnet. A rotary display device characterized in that the display rotating body is driven to rotate by means of. 3. A display rotor which is divided into four display surfaces in the circumferential direction and is magnetized into four poles so that the center of the magnetic pole is located at the boundary of each display surface, and this display rotation. The electromagnet includes a support body that rotatably supports the body, an electromagnet that is arranged to face the outer peripheral surface of the display rotating body, and a ferromagnetic plate that is arranged so as to sandwich the outer peripheral surface of the display rotating body. 2. The rotary display device, wherein the display rotating body is rotationally driven by the excitation / non-excitation control. 4. The outer peripheral surface is divided into four display surfaces in the circumferential direction, and the boundary between the N pole and the S pole is located on one of the display surfaces facing each other, and the other display surface is opposed to each other. N, N, N, S, so that N pole and S pole are located
A display rotor that is magnetized into six poles S and S, a support that rotatably supports the display rotor, a pair of electromagnets that are arranged to face the outer peripheral surface of the display rotor, and the display rotation. It consists of a ferromagnetic plate arranged so as to sandwich the outer peripheral surface of the body,
A rotary display device, wherein the display rotating body is driven to rotate by switching excitation of each of the electromagnets.