JPH0566719A - Rotary display device - Google Patents

Abstract

PURPOSE:To facilitate assembly operations and to allow mass production by automating the winding of excitation coils on excitation poles. CONSTITUTION:A unit which consists of plural display rotating bodies 111 to 11n consisting of cylindrical plastic magnets formed with display surfaces on their peripheral surfaces, a revolving shaft 13 freely rotatably supporting the respective display rotating bodies and plural electromagnet mechanisms 141 to 14n for excitation disposed with a pair of yokes wound with coils for excitation on the outside on one side of the peripheral surfaces of the respective display rotating bodies so as to face each other and constituted to slidingly rotate the respective display rotating bodies, and is integrally provided with the plural yokes forming one side of a pair of the excitation pooles respectively disposed to face the respective display rotating bodies on a 1st support and a unit which is integrally provided with the plural yokes forming other side on a 2nd support are combined to constitute the above-mentioned device.

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 kind is known, for example, from Japanese Patent Application Laid-Open No. 56-159685. As shown in FIG. 11, the permanent magnet 2 is fixed to the rotary shaft 1, and the outer peripheral portion of the permanent magnet 2 is covered with a cylindrical display body 3 to be integrated, so that the rotary shaft 1 can be freely rotated on the substrate shelf board portion. Is supported by. The permanent magnet 2 and the display body 3 are rotationally driven by an exciting electromagnet mechanism 4 provided outside. That is, the exciting electromagnet mechanism 4 has a pair of electromagnets 5 and 6 arranged on the left and right, respectively.
Each has a pair of exciting coils 5a, 5b, 6a, 6b
Is provided.

In this rotary display device, the electromagnet 5 has an N pole,
When the electromagnet 6 is excited so as to have the S pole, the left side of the permanent magnet 2 becomes the S pole and the right side of the permanent magnet 2 stops, as shown in FIG. 11A. When the electromagnets 5 and 6 are excited from this state so that both are S poles, the lower side of the permanent magnet 2 becomes an N pole and the upper side becomes an S pole and stops as shown in FIG. 11 (b). From this state, when the electromagnet 5 is further excited so as to have the S pole and the electromagnet 6 becomes the N pole, the left side of the permanent magnet 2 becomes the N pole and the right side of the permanent magnet 2 stops as shown in FIG. 11 (c). When the electromagnets 5 and 6 are further excited from this state so as to have both N poles, as shown in FIG. 11 (d), the permanent magnet 2 stops with the lower pole being the S pole and the upper pole being the N pole. By changing the exciting magnetic polarities of the electromagnets 5 and 6 in this manner, the permanent magnet 2 rotates, and thereby the display body 3 rotates.

However, it is relatively heavy to fix the permanent magnet 2 to the rotary shaft 1 and to cover the outer peripheral portion of the permanent magnet 2 with the cylindrical display body 3 so as to be integrated. When a plurality of devices are connected to form a panel-shaped large-screen display device, the overall weight of the device is considerable, which limits the number of devices to be used, and there is a problem that a sufficiently large-screen display device cannot be obtained.

Therefore, in order to solve such a problem, the inventor of the present invention has a plurality of display rotors having a peripheral surface as a display surface and permanent magnets arranged along the peripheral surface, and a plurality of display rotors. A rotating support body that rotatably supports the rotating body and has a contact surface with the display rotating body formed of a member having excellent slidability, and a rotating support body provided outside each of the display rotating bodies. We have proposed and filed a rotary display device provided with a plurality of excitation drive means for variably controlling the exciting magnetic property facing the permanent magnets and slidingly rotating each display rotating body with respect to the rotary support. (Japanese Patent Application No. 3-124031)

[0006]

In the prior application as described above, when a plurality of excitation drive means are arranged such that a pair of excitation magnetic poles are arranged to face each other outside one circumferential surface of each display rotor,
Since the distance between the exciting magnetic poles facing each other is small, if the exciting coil is wound around the exciting magnetic poles in the state where they are arranged facing each other, the work becomes troublesome and it is difficult to automate the work. Further, if a large number of one pair of exciting magnetic poles are arranged so as to face a plurality of display rotating bodies, there is a problem that the assembling work becomes troublesome.

Therefore, the present invention aims to provide a rotary display device in which the winding of the exciting coil around the exciting magnetic pole can be easily automated, the assembling work is facilitated, and mass production can be realized.

[0008]

The invention according to claim 1 is
A plurality of display rotors having a peripheral surface as a display surface and permanent magnets arranged along the peripheral surface, a rotary support member for rotatably supporting the plurality of display rotor members on one axis, and each display rotor member. A pair of exciting magnetic poles are arranged opposite to each other on one side of the circumferential surface, and the polarities of the respective exciting magnetic poles are variably controlled to make each display rotary body slide and rotate with respect to the rotary support. Each excitation drive means is integrally provided with a plurality of yokes forming one side of a pair of exciting magnetic poles, which are arranged to face the respective display rotating bodies, on the first support body to be unitized, and the other Is provided integrally with the second support body to form a unit, and an exciting coil is wound around each yoke of each support body.

According to a second aspect of the present invention, in the first aspect of the invention, the first and second supporting members are further provided with a guide groove for drawing out an end portion of the exciting coil wound around each yoke to the outside. A guide hole is formed.

[0010]

In the present invention having such a structure, the excitation drive means are arranged so as to face each display rotor.
A plurality of yokes forming one side of the pair of exciting magnetic poles are integrally provided on the first support to form a unit, and a plurality of yokes forming the other side are integrally formed on the second support. Since the units are provided and configured as a unit, the gaps between the yokes of each unit are relatively large, and the winding of the exciting coil is facilitated, and the winding can be automated. Also, the assembly of the excitation drive means becomes easy.

[0011]

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

As shown in FIG. 1, a plurality of display rotating bodies 11 are provided.
, 11n are rotatably provided on a rotary shaft 13 as a rotary support member with partition walls 12, 12, ... Having excellent slidability interposed therebetween. As the partition wall member 12, for example, plastic such as nylon, Teflon, polyacetal, bakelite or the like is suitable.

The rotating shaft 13 is made of, for example, a general-purpose engineering plastic such as polyacetal, Teflon resin, or nylon, or a synthetic resin material having excellent sliding characteristics, such as polyamide or polyamide-imide having excellent heat resistance. When the device is used outdoors in a place exposed to direct sunlight, it has excellent heat resistance and can maintain mechanical strength and sliding characteristics even in a high temperature atmosphere.
PS. PES. PEEK or the like may be used. In some cases, a metal material that is lightweight and has excellent mechanical strength may be used. In this case, the slidability can be easily improved by coating the metal part with a heat-shrinkable tube of Teflon.

Further, reduction of friction coefficient, improvement of wear resistance,
Glass fibers, carbon fibers, inorganic fillers, or the like may be used to improve the mechanical strength, and a special additive for imparting sliding characteristics may be added thereto. As the special additive material, there are PTFE powder, graphite, carbon fiber, molybdenum disulfide and the like. Further, a lubricating oil may be contained in the polymer to improve slidability.

As shown in FIG. 3, each of the display rotors 111 to 11n is composed of a cylindrical plastic magnet 11a, and the plastic magnet 11a is coated or printed on the peripheral surface thereof, for example, by changing the display color every 90 °. Then, the tube 11b which is the display surface is covered. In this case, the display surface may be formed by directly applying or printing the display color on the peripheral surface of the plastic magnet 11a without using the tube 11b.

The plastic magnet 11a is formed by mixing a resin such as nylon with magnetic powder such as SmCo, NdFe, and Fe2O3 in a required weight ratio and processing it into a required cylindrical shape by injection molding or compression molding. It is a thing. Each of the display rotating bodies 111 to
Exciting electromagnet mechanisms 141, 142, ... 14n are arranged as excitation drive means outside the peripheral surface on the side of 11n.

The exciting electromagnet mechanisms 141 to 14n are composed of a pair of electromagnets 15 and 16 as shown in FIG. 2, and each electromagnet 15 and 16 has exciting yokes 15a and 16a wound with exciting coils 15b and 16b. Is configured.

Specifically, each of the display rotating bodies 111 to 1
As 1n, for example, an inner diameter of 8.2 mm, an outer diameter of 12 mm and a length of 12 mm is used.
Inserted in 3. Further, the magnetizing of the plastic magnet 11a has two poles because of the relationship with the electromagnets 15 and 16, and the magnetic flux density of the surroundings is about 100 gauss. Note that the magnetic flux density is determined by the relationship with the exciting force of the electromagnets 15 and 16, and is also related to the strength of magnetization and the weight of the display rotating body.

Each of the electromagnets 15 and 16 has a material thickness of 0.4 mm.
Exciting yokes 15a and 16a are formed by the magnetic iron plate of No. 2 and bifilar windings having a wire diameter of 0.1 mm are wound about 200 times to form exciting coils 15b and 16b.

As shown in FIG. 4, each of the exciting electromagnet mechanisms 141 to 14n is provided with one of a plurality of exciting yokes 15a and 16a facing each of the display rotors 111 to 11n. As shown in FIG. 4 (a), the yoke 15a is formed by die-cutting a magnetic iron plate in a row to form a yoke body 151.
a, the yoke body 151a is bonded and fixed to the stepped portion of the support body 151b to form a unit, and the other plurality of exciting yokes 16a are also made of a magnetic iron plate as shown in FIG. 4 (b). Of the yoke body 1
61a is integrally formed, and the yoke body 161a is bonded and fixed to the step portion of the support body 161b to form a unit. A guide groove 15 for pulling out the end of the exciting coil to a position facing each of the display rotors 111 to 11n is provided at a portion of each of the supports 151b and 161b facing each other.
c and 16c are formed respectively.

The yoke body 151a is the support body 151.
Before being bonded and fixed to b, as shown in FIG. 5, the exciting coils 15b, 15 are attached to the exciting yokes 15a, 15a ,.
.. are wound by using, for example, an automatic winding machine. That is, each exciting yoke 15a, 15a, ...
Are spaced apart from each other by the exciting yokes 16a, 1
Since it is sufficiently larger than the distance between 6a, ..., Automatic winding is possible.

The same applies to the yoke body 161a, and each exciting yoke 1 before being bonded and fixed to the support body 161b.
6a, 16a, ... Excitation coils 16b, 16
b, ... Are wound using an automatic winding machine.

In this way, the exciting coils 15b and 1 respectively
6b is wound around each exciting yoke 15a, 16a, and the unit members in which the yoke bodies 151a, 161a are adhered and fixed to the support bodies 151b, 161b are attached to each other as shown in FIG. Each of the exciting electromagnet mechanisms 141 to 14n is fixed by adhesion with a double-sided tape or the like.
Are integrally configured.

The end portions of the exciting coils 15b and 16b are connected to the guide grooves 15c of the supports 151b and 161b, respectively.
16c is pulled out to the outside through a hole formed by 16c, and is engaged and fixed to a pin erected on the support.

In the present embodiment having such a structure, one of the plurality of exciting yokes 15a, 16a arranged facing each of the display rotors 111 to 11n is used as the yoke body 151a. A plurality of exciting yokes 16a, which are integrally formed, are also formed on the other side of the yoke body 1.
61a integrally formed, and in this state, the yoke body 15
For each exciting yoke 15a of 1a, the yoke body 1
The exciting coil 1 for each exciting yoke 16a of 61a
Since the windings 5b and 16b are automatically wound by the automatic winding machine, the work of winding the exciting coils 15b and 16b is extremely simple.

Then, the yoke body 151a wound with the exciting coil 15b is bonded and fixed to the step portion of the support body 151b to form a unit, and the yoke body 161a wound with the exciting coil 16b is attached to the step portion of the support body 161b. Since each of the exciting electromagnet mechanisms 141 to 14n is integrally formed by adhering and fixing them to form a unit, and further adhering and fixing the two unit members to each other, the assembling work of the exciting electromagnet mechanism is simplified and Automation can also be realized. As described above, since the winding work can be automated and the assembling work of the exciting electromagnet mechanism can be simplified, the device can be mass-produced.

Further, since the ends of the exciting coils 15b and 16b are pulled out to the outside through the guide grooves 15c and 16c, the coils 15b and 16b may come into contact with other parts during assembly, causing disconnection or misalignment. There is no risk of this, and the supports 151b, 161b can be fixed in close contact. Further, the rotary display device thus configured performs the following operation.

First, when the display surface side of the electromagnet 15 is excited so that the display surface side is the N pole and the display surface side of the electromagnet 16 is the S pole, the magnet 11a of the display rotor 11 (111 to 11n) is attracted to the S pole side to the N pole. Since the N pole side is attracted to the S pole,
The display rotating body 11 slides on the peripheral surface of the rotating shaft 13 to
As shown in (a), the left side is the south pole and the right side is the north pole. When the excitation of the electromagnets 15 and 16 is stopped in this state, the display rotor 11 becomes a stable point and stops rotating.

In this state, the display surface side of the electromagnet 15 is S next.
When magnetized so that the pole and the display surface side of the electromagnet 16 are also S poles, the magnet 11a of the display rotor 11 is attracted to the S poles of the electromagnets 15 and 16 on the N pole side.
1 is obtained by rotating the peripheral surface of the rotary shaft 13 in the clockwise direction by ¼
As shown in (b), the upper side is the south pole and the lower side is the north pole. When the excitation of the electromagnets 15 and 16 is stopped in this state, the display rotor 11 becomes a stable point and stops rotating.

In this state, the display surface side of the electromagnet 15 is S next.
When the magnet and the display surface side of the electromagnet 16 are excited to be the N pole, the magnet 11a of the display rotor 11 is attracted to the N pole of the electromagnet 16 on the S pole side, so that the display rotor 11 is surrounded by the peripheral surface of the rotating shaft 13. Is further rotated 1/4 clockwise to
As shown in (c), the left side is the north pole and the right side is the south pole. When the excitation of the electromagnets 15 and 16 is stopped in this state, the display rotor 11 becomes a stable point and stops rotating.

In this state, when excitation is further performed so that the display surface side of the electromagnet 15 becomes the N pole and the display surface side of the electromagnet 16 becomes the N pole, the magnet 11a of the display rotor 11 has the S pole side as the N pole of each electromagnet 15, 16. The display rotor 11 further rotates the peripheral surface of the rotary shaft 13 in the clockwise direction by 1/4, so that the upper side becomes the N pole and the lower side becomes the S pole as shown in FIG. 7 (d). When the excitation of the electromagnets 15 and 16 is stopped in this state, the display rotor 11 becomes a stable point and stops rotating. The exciting coils 15b, 1 of the electromagnets 15, 16 are
An excitation current of about 1 A is sufficient for the 6b.

In this way, by rotating the exciting magnetic poles of the electromagnets 15 and 16, the rotary display body 11 is moved clockwise by 1.
It can be slid by / 4 rotation. Needless to say, if the switching of the exciting magnetic polarities of the electromagnets 15 and 16 is completely reversed, the rotating display body 11 can be slidably rotated counterclockwise by 1/4 rotation. Therefore, the rotary display 11
If the surface of the display surface to be observed from the outside is set to 1/4 unit of the peripheral surface, it is possible to alternately switch the display of each color applied every 90 ° on the display surface.

The n rotary display members 111 to 11n provided on the rotary shaft 13 are each provided with an exciting electromagnet mechanism 14a.
Since rotation is controlled independently by 1, 142, ... 14n, various color shades can be displayed by the rotary display members 111 to 11n.

Further, since the rotary shaft 13 is made of a synthetic resin material having excellent sliding characteristics, the rotary display members 111 to 1 are used.
1 n smoothly slides around the rotary shaft 13 to rotate. Further, since each of the rotary display members 111 to 11n is composed of the plastic magnet 11a, it becomes extremely lightweight and does not become heavy as a whole. Further, partition members 12, 1 are provided between the rotary display members 111 to 11n.
, 2 are intervened, there is no possibility that the rotations of the adjacent rotary display bodies affect each other. 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.

This is the yoke body 1 as shown in FIG.
51a and a support 152b made of resin are integrally formed by insert molding, and as shown in FIG. 8B, a yoke body 161a and a support 162b made of resin are integrally formed by insert molding. .. The support 15
Protrusions 15d and 16d are provided on both end surfaces of 2b and 162b.

Thus, the yoke body 151a and the support body 152
b, a yoke body 161a and a support body 16
An exciting coil 15a, 15a, ..., 16a, 16a ,.
Exciting coils 15b and 16b are wound around each other to form a pair of unit members. As shown in FIG. 9 (a), these unit members are attached to each other with adhesives or double-sided surfaces on opposite sides of the supports 152b and 162b. The excitation electromagnet mechanism is integrally formed by adhesively fixing it with tape or the like.

The integrated exciting electromagnet mechanism is provided below the U-shaped magnetic shield plate 17 made of a magnetic plate shown in FIG. 9B at both ends of each of the supports 152b and 162b. The projections 15d and 16d are attached to the magnetic shield plate 17
It is adapted to be housed by being fitted into the four fixing grooves 17a provided in the. Also, the partition member 1 is provided between the display rotors 111, 112, ... 11n on the rotary shaft 13 shown in Fig. 9C.
The display main body 18 rotatably provided via the support shaft 20 provided at the tip of the rotary shaft 13 with respect to the support grooves 19a provided at both upper sides of the magnetic shield plate 17.
Are engaged. Thus, the rotation display unit as shown in FIG. 10 is configured.

In this embodiment, the yoke body 151a and the support body 152b, and the yoke body 161a and the support body 162b are integrally formed by insert molding.
It is possible to securely fix and position the brackets 151a and 161a to the supports 152b and 162b. Moreover, the strength of the unit member is enhanced.

Further, by providing the magnetic shield plate 17, when a large number of rotary display units as shown in FIG. 10 are arranged to form a panel-shaped large screen display device, a certain rotary display body is controlled to rotate by an exciting electromagnet mechanism. When this is done, the magnetic lines of force act on the magnet 11a of the rotary display,
The magnetic shield plate 17 prevents the lines of magnetic force from leaking to the side of the rotary display adjacent to the peripheral surface of the rotary display. Therefore, when a certain rotary display body rotates, the adjacent rotary display body also does not rotate together. Therefore, it is possible to perform a reliable display without causing the adjacent rotary display bodies to rotate erroneously.

The exciting coil 1 is also used in this embodiment.
Since the winding work of 5b and 16b can be automated and the assembling work of the exciting electromagnet mechanism can be simplified, the same effect as the above-mentioned embodiment can be obtained.

In the present embodiment, the exciting yokes 15a, 16a are formed by die-cutting and forming one magnetic iron plate in a row, but the exciting yokes 15a, 16a are used.
If 16a is separated, magnetic interference between adjacent yokes can be reduced. Also, even if each excitation yoke is separated in this way, insert molding is performed,
There is no problem in fixing and positioning.

In each of the above embodiments, the guide groove for guiding the coil end portion to the outside is provided in the adhesive facing portion of each support, but the present invention is not limited to this and the support groove of each support is not limited to this. A guide groove may be provided on the side opposite to the adhesive facing portion, or a guide hole may be provided instead of the guide groove.

[0043]

As described in detail above, according to the present invention, the winding of the exciting coil around the exciting magnetic pole can be easily automated, the assembling work is facilitated, and the rotary display device can be mass-produced. Can be provided.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram showing an embodiment of the present invention.

FIG. 2 is a partial perspective view showing the configuration of a rotary display body and an exciting electromagnet mechanism in the embodiment.

FIG. 3 is a perspective view showing a configuration of a rotary display body in the embodiment.

FIG. 4 is a view for explaining an assembly process of the exciting electromagnet mechanism in the embodiment.

FIG. 5 is a diagram for explaining an assembly process of the exciting electromagnet mechanism in the embodiment.

FIG. 6 is a perspective view showing an exciting electromagnet mechanism in the embodiment.

FIG. 7 is a view for explaining the rotating operation of the rotating display body in the embodiment.

FIG. 8 is a view for explaining an assembling process of an exciting electromagnet mechanism according to another embodiment of the present invention.

FIG. 9 is a view for explaining the assembly process of the device in the other embodiment.

FIG. 10 is a perspective view showing the overall configuration of another embodiment.

FIG. 11 is a diagram showing a conventional example.

[Explanation of symbols]

11 1 to 11 n ... Rotating display body, 13 ... Rotating shaft, 141 ...
14n ... Electromagnet mechanism for excitation, 15a, 16a ... Yoke for excitation, 15b, 16b ... Coil for excitation, 151a, 16
1a ... Yoke body, 151b, 161b ... Support body.

Claims (2)

[Claims] 1. A plurality of display rotators each having a peripheral surface as a display surface and permanent magnets arranged along the peripheral surface, and a rotary support for rotatably supporting the plurality of display rotators on one axis. A pair of exciting magnetic poles are arranged opposite to each other outside the peripheral surface of each of the display rotors, and the polarities of the respective excitation magnetic poles are variably controlled so that the display rotors are slidably rotated with respect to the rotary support. And a plurality of yokes forming one side of a pair of exciting magnetic poles facing each of the display rotors, the yokes being integrated with the first supporting body. And a plurality of yokes that form the other side of the second
The rotary display device, wherein the rotary display device is integrally provided on the support body to form a unit, and an exciting coil is wound around each yoke of each support body. 2. The first and second supports are formed with guide grooves or guide holes for drawing out the ends of the exciting coils wound around the respective yokes to the outside. Rotating display device.