KR900002772B1 - Rotary display element and display unit using same - Google Patents

Abstract

The display surface member is driven by the permanent magnet type motor. Its rotor has two double-pole permanent magnets and its stator has two magnetic members with respective exciting windings. The display unit has two power supplies for each winding, respectively. The number of display surfaces can selectively be directed to the front by supplying power to the first exciting winding via the power supplies and to the second winding via the other to supplies. A display panel can be constituted by arranging, in a matrix form, a number of such display units each including the rotating display element.

Description

Rotary display element and display unit

1 is a schematic diagram conceptually showing an embodiment of a display unit using a rotation display element according to the present invention;

2 is a plan view showing, in partial cross section, an example of a rotation display element used in the display unit of FIG.

3rd degree is a front view similar to 2nd degree.

4 is a side view as seen from the IV-IV line in FIG.

5 to 17 are schematic diagrams for explaining the operation of the display unit of the present invention shown in FIG.

* Explanation of symbols for the main parts of the drawings

11: rotating shaft 13: panel

15 support body 16 support rod

20: power

The present invention relates to a rotating display element in which a display surface member having a plurality of, for example, four display surfaces is provided, and the desired one can be selected among the display surfaces by rotation of the displayed member. The present invention also relates to an improvement over or related to a display unit using a rotating display element.

Until now, various rotating display elements have been proposed, but they must be provided with a rotating mechanism for driving the display surface member separately from the rotating display element, or the selected display surface of the display surface member cannot be in the correct display position. Has a defect.

In addition, various display units using rotation display elements have also been proposed in the past, which also have defects requiring complicated means to select a desired one from the display surfaces in addition to the above-described defects of the rotation display elements.

It is an object of the present invention to provide a new rotation display element which does not have the above-described defects and a display unit using such a rotation display element.

According to an aspect of the present invention, a display device of the display surface member is selected from one of the rotor and the stator of the motor mechanism (hereinafter simply referred to as stator) through the first or second power supply means. The power supply is connected to the first excitation winding, and the front side can be turned only by connecting the power supply through the second excitation winding of the stator through the third or fourth power supply means. Thus, the display surfaces of the display surface element can be selectively directed forward by using a simple device.

According to another aspect of the present invention, even if the power supply to the first and second excitation windings is stopped after the selection on the display surfaces is turned forward, the selected display surface is rotated as described above. The first and second double magnetic pole permanent magnet members of the other of the electrons and stator (hereinafter referred to simply as the rotor) act on the stator's first and second magnetic members so that they can remain in position. Will be. Therefore, unnecessary power consumption can be eliminated by this.

According to another aspect of the present invention, the above-described motor mechanism can be incorporated in the display surface member, so that the display surface member drive mechanism does not need to be provided separately from the display element as in the prior art.

According to another aspect of the invention, the rotor of the motor mechanism has first and second double pole permanent magnet members magnetized to the south pole and the north pole, respectively, these double pole permanent magnet members being perpendicular to the axis of the rotor. It is formed by a rod or plate-like member having a narrow rectangular cross section in the direction, and the free end faces spaced 180 degrees around the axis of the rotor are the south pole and the north pole. Because of this structure, the selected display surface can be quickly and smoothly faced forward and can be kept in that position.

The display unit of the present invention uses the above-described display element, and includes first and second power supply means for supplying power to the first and second excitation windings of the display element for driving the display element, Only the third and fourth power supply means for supplying power to the excitation winding is required.

1 conceptually illustrates one embodiment of a display unit using the rotation display element of the present invention, wherein the display unit includes a rotation display element (hereinafter simply referred to as a display element) E and a drive device G for driving the same. It is provided.

The display element E is a display surface member D and a permanent magnet motor mechanism (hereinafter simply referred to as a motor mechanism) indicated by Q in the second to fourth degrees.

As can be seen from FIGS. 2 to 4, the display surface member D has, for example, a tubular shape and four display panels H ₁ , H ₂ , H arranged around the axis at an equiangular interval of 90 °. ₃ and H ₄ . On the outer surface of these display panels, display surfaces F ₁ , F ₂ , F ₃ and F ₄ are formed, respectively.

One example of the motor mechanism Q has a rotating shaft 11, on which two double magnetic pole permanent magnet members M ₁ and M ₂ magnetized to the south pole and the north pole are mounted side by side in the longitudinal direction.

The double magnetic pole permanent magnet members M ₁ and M ₂ have a narrow rectangular cross section in a direction perpendicular to the rotating shaft 11, and have free end faces spaced apart from each other at an angular distance of 180 ° around the rotating shaft 11. And a rod or plate member magnetized to the north pole. This rod or plate member is mounted on the rotary shaft 11, the center of the above-described cross section of the rod or plate member being adapted to coincide with the center of the rotation shaft. In this example, both free end faces of the rod or plate member magnetized to the south pole and the north pole respectively form an arc around the rotating shaft 11. The length of this arc is less than 45 degrees, for example, 90 degrees / 3. Such a rod or plate member has a sphere obtained by cutting the disc or column member along a pair of opposed planes equidistant from the plane comprising the axis.

α˚〈180˚임)만큼 이격 배치된다. 도면에서는 간략하게 α˚=0˚의 경우로 도시했다.Stimulating double permanent magnet member M ₂ and the South Pole Double Pole permanent magnet magnetic pole angle away from the Antarctic and Arctic member M ₁ ± α˚ (α˚ is 0˚

spaced apart by α ° <180 °). In the figure, it is briefly shown as the case of α ° = 0 °.

The rotating shaft 11 and the double magnetic pole permanent magnet members M ₁ and M ₂ constitute the rotor R of the motor mechanism Q.

The rotor R of the motor mechanism Q is rotatably supported by the support member 15 composed of the left, right, and rear panels 12, 13, and 14. That is, the rotary shaft 11 of the rotor R is rotatably mounted between the left panel 12 and the right panel 13 of the support member 15.

The motor mechanism Q is, for example, a magnetic member B ₁ provided with magnetic poles P ₁ and P ₂ acting on the south pole and the north pole of the double magnetic pole permanent magnet M, and a magnetic pole acting on the south pole and the north pole of the double pole permanent magnet M ₂ . Magnetic member B ₂ provided with P ₃ and P ₄ , excitation winding L ₁ wound on magnetic member B such that magnetic poles P ₁ and P ₂ exhibit reverse polarity, and magnetic force such that magnetic poles P ₃ and P ₄ exhibit reverse polarity. The excitation winding L ₂ wound around the member is provided. The magnetic poles P ₁ and P ₂ of the magnetic member B1 are spaced apart from each other at an angle of 180 ° around the axis of the rotor R, that is, around the rotary shaft 11.

The magnetic poles P ₃ and P ₄ of the magnetic member B ₂ are spaced at an angular distance of 180 ° around the rotation shaft 11 of the rotor R, but are ± 90 ° from the magnetic poles P ₁ and P ₂ of the magnetic member B ₁ . It is kept at an angular distance of ± α °. In the figure, as described above, α = 0, + 90 ° to + 90 ° are selected, and the magnetic poles P ₃ and P ₄ are spaced 90 ° from the magnetic poles P ₁ and P ₂ .

Magnetic poles of the magnetic element B ₁ P ₁ and P ₂ and the magnetic pole of the magnetic member B ₂ P ₃ and P ₄ are each extended over a period of about 90˚ angle range of the axis of the rotation shaft 11 of the rotor R.

The magnetic members B ₁ and B ₂ and the excitation windings L ₁ and L ₂ form the stator S of the motor mechanism Q.

The stator S of the motor mechanism Q is fixedly mounted on the above-mentioned support member 15. That is, the magnetic member B ₁ and the excitation winding L ₁ wound thereon are supported by the support member 15 by a support rod 16 extending between the position of the excitation winding L ₁ and the inner wall of the right panel 13 of the support 15. Is fixed to. Similarly, the magnetic member B ₂ and the excitation winding L ₂ wound thereon extend between the position of the excitation winding L ₂ and the left panel 12 of the supporting member 15. It is fixed to the support member 15 by the support rod 17.

The display surface member D is attached to the rotor R of the motor mechanism Q in such a manner as to accommodate the motor mechanism Q. That is, four supporting rods K ₁ , K ₂ , K ₃ and K ₄ extending in the radial direction of the rotary shaft 11 at intervals of 90 ° are provided with the double magnetic pole permanent magnet member M ₁ mounted on the rotary shaft 11. One end is fixed to the rotating shaft 11 between M ₂ , and the free ends are fixed to the display panels H ₁ , H ₂ , H ₃ and H ₄ , respectively, inside the display surface member D.

In the present example, the display surface member D has the magnetic poles P ₁ and the magnetic poles B ₁ of the magnetic poles B ₁ clockwise at the centers of the south pole and the north pole of the double pole permanent magnet member M ₁ , respectively, as shown in FIGS. The rotational position opposite the trailing edges a of P ₂ and the centers of the south pole and the north pole of the double pole permanent magnet member M ₂ opposite the poles b of the poles P ₃ and P ₄ of the magnetic element B ₂ in a clockwise direction. The manner in which the display surface F ₁ of the display surface member D faces forward when the rotor R is taken is attached to the rotor R. The above rotational position will be referred to as the first rotational position below.

In addition, as shown in FIGS. 6, 13 and 16, the display surface member D has the leading edges of the magnetic poles P ₁ and P ₂ of the magnetic member B ₁ clockwise at the centers of the south pole and the north pole of the double magnetic pole permanent magnet member M ₁ . Rotor R is rotated opposite the field b, and the centers of the south pole and the north pole of the double pole permanent magnet member M ₂ are opposed to the trailing ends a of the poles P ₃ and P ₄ of the magnetic element B ₂ clockwise. At the time of taking, the display surface F ₄ of the display surface member D is mounted on the rotor R in such a manner as to face forward. This rotation position will hereinafter be referred to as the fourth rotation position.

In addition, as shown in FIGS. 7, 10 and 17, the display surface member D has the lines of the magnetic poles P ₁ and P ₂ of the magnetic member B ₁ clockwise at the centers of the south pole and the north pole of the double magnetic pole permanent magnet member M ₁ . Rotor R opposite the edges b, with the centers of the south pole and the north pole of the double pole permanent magnet member M ₂ opposed to the trailing edges a of the poles P ₃ and P ₄ of the magnetic element B ₂ clockwise. At this time, the display surface F ₂ of the display surface member D is attached to the rotor R in such a manner as to face forward. This rotation position will hereinafter be referred to as the second rotation position.

In addition, as shown in FIGS. 8, 11 and 14, the display surface member D has the lines of the magnetic poles P ₁ and P ₂ of the magnetic member B ₁ clockwise at the centers of the south pole and the north pole of the double magnetic pole permanent magnet member M ₁ . Rotor R opposite the edges a and the centers of the south pole and the north pole of the double pole permanent magnet member M ₂ opposite the pole edges b of the poles P ₃ and P ₄ of the magnetic element B ₂ clockwise. At this time, the display surface F ₃ of the display surface member D is mounted on the rotor R in such a manner as to face forward. This rotation position will hereinafter be referred to as the third rotation position.

5 to 17, power supply means J ₁ for supplying power to the excitation winding L ₁ of the stator of the motor mechanism Q such that the magnetic poles P ₁ and P ₂ of the magnetic member B ₁ serve as the south pole and the north pole. and, the Antarctic magnetic member B ₁ magnetic poles P ₁ and P ₂ are the Antarctic and women hagekkeum serve as polar power supply means for supplying electric power to the coil L ₁ J _2, magnetic poles of the magnetic member B ₂ P ₃ and P ₄ of the and hagekkeum acts as a north pole woman of the stator S of the motor mechanism Q field winding power supply for supplying power to the L ₂ supply means J _3, and a magnetic pole of the magnetic member B ₂ P ₃ and P ₄ are hagekkeum acts as the South Pole, and polar winding L ₂ Power supply means J ₄ for supplying power to the drive G is provided.

The power supply means J ₁ is connected to _one end of the excitation winding L ₁ via, for example, the positive contact (+) terminal of the DC power supply 20 via the moving contact C and the fixed contact a of the switching switch W ₁ , and the DC power supply ( The negative terminal of (20) has a configuration in which it is directly connected to the midpoint of the excitation winding L ₁ .

In the power supply means J ₂ , for example, the positive terminal of the DC power supply 20 is connected to the other end of the excitation winding L ₁ via the moving contact C and the fixed contact b of the switching switch W ₁ , and the negative terminal is the excitation winding. gujoeul has a direct connection to the midpoint of L _1.

In the power supply means J ₃ , for example, the positive terminal of the DC power supply 20 is connected to one end of the excitation winding L ₂ via the moving contact C and the fixed contact a of the switching switch W ₂ , and the negative terminal is the excitation winding. It has a structure directly connected to the intermediate point of L ₂ .

In the power supply means J ₄ , for example, the positive terminal of the DC power supply 20 is connected to the other end of the excitation winding L ₂ via the moving contact C and the fixed contact b of the switching switch W ₂ , and the negative terminal is the excitation winding. It is directly connected to the midpoint of L ₂ .

The following is a detailed description of the above structure and its operation.

In the case of the above-described structure of the display unit using the rotation display element according to the present invention, the rotor R of the motor mechanism Q has the double magnetic pole permanent magnet members M ₁ and M ₂ mounted on the rotation shaft 11. The south pole and the north pole of the double magnetic pole permanent magnet members M ₁ and M ₂ are spaced apart by an angular distance of ± α ° (in this example, α ° = 0 °) around the rotary shaft 11.

On the other hand, the stator S of the motor mechanism Q is spaced at an angular distance of 180 ° around the rotation shaft 11 and provided with magnetic poles P ₁ and P ₂ acting on the south pole and the north pole of the double pole permanent magnet member M ₁ . The member B ₁ and the double magnetic pole permanent magnet member M ₁ are spaced at an angular distance of ± 90 ° α ° from the magnetic poles P ₁ and P ₂ and are disposed at a 90 ° interval around the rotary shaft 11, and the double magnetic pole permanent magnet member Magnetic members B ₂ provided with magnetic poles P ₃ and P ₄ acting on the south and north poles of M ₂ . Stimulation P ₁ and P ₂ of the magnetic element B is ₁ extends round the rotary shaft 11 over the angular range of 90˚, stimulation P ₃ and P ₄ of the magnetic element B ₂ is rotated over an angle range of 90˚ It extends around the shaft 11.

In the case of this structure, the moving contact C of the switching switches W ₁ and W ₂ is connected to the fixed contact α, that is, when no power is supplied to any of the excitation windings L ₁ and L ₂ of the stator S, the motor The rotor R of the instrument Q is in the first rotational position described above with respect to the fifth, 9th, 12th and 15th, and the fourth rotational position described above with respect to the sixth, 13th and 16th degrees, 7,10th and 17th degrees. The second rotational position described above in relation to the above, or the third rotational position described above in relation to the eighth, eleven and fourteenth degrees.

The reason for this is as follows.

In the case where the rotor R is intended to rotate counterclockwise from the first rotational position shown in 5th, 9th, 12th and 15th degrees, the south pole and the north pole of the double pole permanent magnet M ₁ are the pole P of the magnetic member B ₁ . _Since they remain opposite to ₁ and P ₂ , no rotating torque occurs in the double magnetic pole permanent magnet member M, which prevents the rotor R from rotating in the counterclockwise direction. However, since the south pole and the north pole of the double magnetic pole permanent magnet member M ₂ move out of the opposing relationship to the magnetic poles P ₃ and P ₄ of the magnetic member B ₂ , the rotational torque which prevents the rotor R from rotating in the counterclockwise direction is doubled. A magnetic pole occurs in the permanent magnet member M ₂ . In addition, in the case where the rotor R is intended to rotate clockwise from the first rotational position shown in the fifth, nineth and sixteenth degrees, the south pole and the north pole of the double pole permanent magnet member M ₂ are the poles P of the magnetic member B ₂ . _Since they remain opposite to ₃ and P ₄ , no rotating torque occurs in the double magnetic pole permanent magnet member M ₂ , which prevents the rotor R from rotating clockwise. However, since the south pole and the north pole of the double magnetic pole permanent magnet member M ₁ move from the magnetic poles P ₁ and P ₂ of the magnetic member B ₁ , the rotational torque which prevents the rotor R from rotating clockwise is the double pole permanent magnet M _1. Occurs in

The rotor R is 6,13 and in the case from the rotational position of the fourth illustrated in Figure 16 to rotate in the clockwise direction, the magnetic pole double permanent magnet member M ₁ and the Antarctic polar poles of the magnetic member B ₁ and P ₁ Since it stays opposite to P ₂ , no rotating torque occurs in the double magnetic pole permanent magnet member M ₁ , which prevents the rotor R from rotating clockwise. However, since the south pole and the cathode of the double magnetic pole permanent magnet member M ₂ move from the magnetic poles P ₄ and P ₃ of the magnetic member B ₂ , the rotational torque that prevents the rotor R from rotating clockwise is the double magnetic pole permanent magnet member M. Occurs in ₂ . In addition, when the rotor R is intended to rotate counterclockwise from the fourth rotational position shown in the 6th, 13th and 16th degrees, the south pole and the north pole of the double pole permanent magnet member M ₂ are the poles of the magnetic member B ₂ . Since it stays opposite P ₄ and P ₃ , there is no rotational torque in the double pole permanent magnet member M ₂ that prevents the rotor R from rotating in the counterclockwise direction. However, a double stimulation permanent magnet member that prevents the M ₁ Antarctica and the North Pole is not rotated because it is moving from the magnetic pole P ₁ and P ₂ of the magnetic element B _1, double stimulation permanent magnet member M _1, the rotor R is clockwise Rotational torque occurs.

In the case where the rotor R is intended to rotate clockwise from the second rotational position shown in the 7,10 and 17 degrees, the south pole and the north pole of the double magnetic pole permanent magnet member B ₁ are the pole P ₂ of the magnetic member B ₁ and Since it stays opposite to P ₁ , there is no rotational torque in the double-pole permanent magnet member M ₁ that prevents the rotor R from rotating clockwise. However, the double stimulation permanent magnet member M ₂ is the South Pole, and polar to prevent rotation due to move from magnetic poles P ₃ and P ₄ of the magnetic element B _1, double stimulation permanent magnet member M _2, the rotor R is clockwise Rotational torque occurs. Further, in the case where the rotor R is to be rotated counterclockwise from the rotational position shown in Figs. 7, 10 and 17, the south pole and the north pole of the double pole permanent magnet member M ₂ are the poles of the magnetic member B ₂ . Since it stays opposite P ₃ and P ₄ , there is no rotational torque in the double-pole permanent magnet M ₂ that prevents the rotor R from rotating counterclockwise. However, since the south pole and the north pole of the double magnetic pole British magnet member M ₁ move from the magnetic poles P ₂ and P ₁ of the magnetic member B ₁ , the rotor R does not allow the dual magnetic pole permanent magnet member M ₁ to rotate counterclockwise. Rotational torque occurs. Further, in the case where the rotor R is intended to rotate clockwise from the third position shown in the 8th, 11th and 14th degrees, the south pole and the north pole of the double magnetic pole permanent magnet member M ₁ are the pole P ₂ of the magnetic member B ₁ . And stays opposite to P ₁ , there is no rotational torque in the double-pole permanent magnet member M ₁ that prevents the rotor R from rotating clockwise. However, since the south pole and the north pole of the double magnetic pole permanent magnet member M ₁ move from the magnetic poles P ₂ and P ₁ of the magnetic member B ₁ , the rotation to prevent the rotor R from rotating clockwise in the double magnetic pole permanent magnet member M _1. Torque is generated.

For the reasons mentioned above, when the stator S is not supplied with power to any of the excitation windings L ₁ and L ₂ , the rotor R takes one of the rotation positions of the first, second, third and fourth.

In addition, the display surface member D is attached to the rotor R of the motor rotating mechanism Q, and the display surface F ₁ , F ₂ , F when the rotor R takes the rotation positions of the first, second, third, and fourth described above. _{With 3} and F ₄ facing forward, respectively.

Assuming that the motor mechanism Q is placed in the first rotational position, the display element E is in a state in which the display surface F ₁ of the display surface member D faces forward (the state is hereinafter referred to as the first state). In the first state of the display element E, although power is supplied to the excitation winding L ₁ of the stator S of the motor mechanism Q via the power supply means J _2, and via the power supply means J ₄ almost simultaneously in a very short time. Even when supplied to the excitation winding L ₂ , the display element E remains in the first state as shown in FIG. 5.

The reason is as follows.

By supplying power to the excitation winding L ₁ via the power supply means J ₂ , the magnetic poles P ₁ and P ₂ of the magnetic member B ₁ are magnetized to the south pole and the north pole so that the counterclockwise rotational torque of the double magnetic pole permanent magnet member M ₁ is reduced. This causes the rotor R to rotate counterclockwise. However, by supplying power to the excitation winding L ₂ via the power supply means J ₄ , the magnetic poles P ₃ and P ₄ of the magnetic member B ₂ are magnetized to the south pole and the north pole, so that the clockwise rotational torque of the double magnetic pole permanent magnet member M ₂ is small. Make the rotor R rotate clockwise. When a small counterclockwise rotational torque is generated in the rotor R, the dual magnetic pole permanent magnet members M ₁ north pole and south pole are disposed opposite magnetic poles P ₁ and P ₂ magnetized to the south pole and north pole of magnetic member B ₁ . Therefore, no rotating torque is generated in the double magnetic pole permanent magnet M ₁ which prevents the rotor R from rotating in the counterclockwise direction. However, since the north and south poles of the double magnetic pole permanent magnet member M ₂ cause the magnetic poles P ₃ and P ₄ of the magnetic member B ₂ to be magnetized into the south pole and the north pole, the rotational torque preventing the counterclockwise rotation of the rotor R is double pole permanent. To the magnet member M ₂ . In addition, when the small clockwise rotational torque is generated in the rotor R, the north pole and south pole of the double magnetic pole permanent magnet member M _{2 face} the magnetic poles P ₃ and P ₄ of the magnetic member B ₂ magnetized to the south pole and the north pole. do. Therefore, no rotating torque is generated in the double magnetic pole permanent magnet member M ₂ which prevents the rotor R from rotating clockwise. However, since the north and south poles of the dual magnetic pole permanent magnet member M ₁ cause the poles P ₁ and P ₂ to act as the south pole and the north pole, the rotational torque which prevents the rotor R from rotating clockwise is the double magnetic pole permanent magnet member M _1. Is generated from

For this reason, when the display element E is in the first state, although the power is supplied to the excitation windings L ₁ and L ₂ via the power supply means J ₂ and J ₄ , the display element remains in the first state.

When the display element E is in the first state, if the power is supplied to the excitation winding L ₁ via the power supply means J ₂ , and the power is supplied to the excitation winding L ₂ via the power supply means J ₃ at about the same time in a very short time. As shown in FIG. 6, the rotor R of the motor mechanism Q is assumed to be the fourth rotational position described above. That is, the display element E is switched and maintained in a state in which the display surface F ₄ faces forward (the state is later referred to as a fourth state).

The reason is as follows.

Since power is supplied to the excitation winding L ₁ via the power supply means J ₂ , the magnetic poles P ₁ and P ₂ of the magnetic member B ₁ magnetize the south pole and the north pole. However, in this case, a double stimulation permanent magnet member M ₁ north pole and south poles are opposed to the magnetic pole P ₁ and P ₂ each end a, double stimulation rotational torque to the permanent magnet member M ₁ is not generated, and although occurs even The magnetic poles B ₃ and P ₄ of the magnetic member B ₂ are magnetized to the North Pole and the South Pole even when power is supplied to the excitation winding L ₂ via the power supply means J ₃ . In this case, the north and south poles of the double magnetic pole permanent magnet M ₂ are placed opposite the ends b of the poles P ₃ and P ₄ , so that the repulsive force between the poles magnetized to the north pole and the north pole and between the pole P ₃ magnetized to the south pole and the south pole This causes a large counterclockwise rotational torque to be generated in the double-mark permanent magnet M ₂ . Thus, a large counterclockwise torque is generated in rotation R to rotate the rotor counterclockwise.

If the rotor R rotates counterclockwise and rotates more than 45 ° from the first rotational position, the north pole north pole of the double pole permanent magnet M ₁ is the pole P ₁ and P of the magnetic member B ₁ magnetized to the south pole and the north pole. _{Since it} is opposed to ₂ , rotational torque is not generated in the double magnetic pole permanent magnet M ₁ . If so, only very small clockwise rotational torque is produced. However, the north and south poles of the double-pole permanent magnet M ₂ are close to the poles P ₄ and P ₃ magnetized to the south pole and the north pole, so between the pole P ₄ magnetized to the north pole and the south pole and between the pole P ₃ magnetized to the south pole and the north pole. The attraction force causes a large counterclockwise rotational torque to be generated in the double magnetic pole permanent magnet M ₂ . Thus, the rotor R rotates counterclockwise.

When the rotor R rotates counterclockwise and rotates more than 90 ° from the first rotational position, the north pole and south pole of the double permanent magnet M ₂ are applied to the magnetic poles P ₄ and P ₃ of the magnetic member B ₂ magnetized to the south pole and the north pole. It becomes the opposite relationship. Therefore, no rotational torque is generated in the double magnetic pole permanent magnet M ₂ , and even if it is generated, very little counterclockwise rotational torque occurs. However, the north pole and south pole of the double magnetic pole permanent magnet deviate from the relation opposite to the poles P ₁ and P ₂ magnetized to the south pole and the north pole, thereby preventing the rotor R from rotating counterclockwise by more than 90 ° from the first state. Large rotational torque is generated in the double magnetic pole permanent magnet M ₁ . Therefore, the rotor R does not rotate counterclockwise by more than 90 degrees from the first rotational position.

For the above reason, assuming that the display element E is in the first state, power is supplied to the excitation windings L ₁ and L ₂ via the power supply means J ₂ and J ₃ .

When the display element E is in the first state, if power is supplied to the excitation winding L ₁ via the power supply means J ₁ and simultaneously to the excitation winding L ₂ via the power supply means J ₄ in a very short time, the seventh As shown in the figure, it is assumed that the rotor R of the motor mechanism Q is placed in the second rotational position, where the display element E is a state in which the display surface F ₂ faces forward (the state is hereinafter referred to as a second state). Is maintained as).

The reason is as follows.

Since power is supplied to the excitation winding L ₂ via the power supply means J ₄ , the magnetic poles P ₃ and P ₄ of the magnetic member B ₂ are magnetized to the south pole and the north pole. In this case, however, the north and south poles of the double magnetic pole permanent magnet member M ₂ are opposed to the ends b of the magnetic poles P ₃ and P ₄ , so that no rotational torque is generated in the double magnetic pole permanent magnet member M ₂ , even if it occurs. Very little clockwise rotational torque is produced. However, since power is supplied to the excitation winding L ₁ via the power supply means J ₁ , the magnetic poles P ₁ and P ₂ of the magnetic member B ₁ are magnetized to the north pole and the south pole. In this case, the north pole and the pole of the double pole permanent magnet M1 are placed opposite the ends a of the poles P ₁ and P ₂ , and are double poled by the repulsive force between the poles magnetized to the north pole and the north pole and the poles magnetized to the south pole and the south pole. Causes a large clockwise rotational force to be generated in the permanent magnet M ₁ . Therefore, a large clockwise rotational torque is generated at the rotor R to rotate the rotor clockwise.

When the rotor R rotates clockwise and rotates further by 45 ° from the first rotational position, the north pole and south pole of the double pole permanent magnet M ₂ are the poles P ₃ and P of the magnetic member B ₂ magnetized to the south pole and the north pole. _As opposed to ₄ , no rotational torque is generated in the double magnetic pole permanent magnet M ₂ , and even if it is generated, very little counterclockwise rotational torque is generated. However, since the north pole and south pole of the double magnetic pole permanent magnet M ₁ are close to the poles P ₂ and P ₁ magnetized to the south pole and the north pole, the pole P ₂ magnetized to the north pole and the south pole and the pole P1 magnetized to the south pole and the south pole The suction force causes a large clockwise rotational force to be generated in the double magnetic pole permanent magnet M ₁ .

When the rotor R rotates clockwise and rotates further 90 degrees from the first state, the north pole and south pole of the double magnetic pole permanent magnet M ₁ rotate opposite to the poles P ₂ and P ₁ magnetized to the south pole and the north pole. Therefore, no rotating torque is generated in the double magnetic pole permanent magnet M ₁ . Even if it is generated, very little rotational torque is generated. However, the north and south poles of the double-pole permanent magnet M ₂ deviate from the opposite relationship to the magnetic poles P ₂ and P ₄ magnetized to the south pole and the north pole, so that the rotor R rotates clockwise by more than 90 ° from the first state. A large rotational torque is generated in the double magnetic pole permanent magnet M2 to prevent it. Therefore, the rotor R does not rotate clockwise more than 90 degrees from the first rotational position.

For the above reason, assuming that the display element E is in the above-described first state, the display element E is switched to supply power to the excitation windings L ₁ and L ₂ via the power supply means J ₁ and J ₄ . 2 Maintain state.

If the display element E is in the first state and the power is supplied to the excitation winding L ₁ via the power supply means J _1, and the power is supplied to the excitation winding L ₂ via the power supply means J ₃ almost simultaneously, As shown in FIG. 8, it is assumed that the rotor R of the motor mechanism Q is in the third rotational position, where the display element E is switched so that the display surface F ₃ faces forward (hereinafter, the above-mentioned). State to the third state)

The reason is as follows.

This is because power is supplied to the excitation winding L ₁ via the power supply means J ₁ , and power is supplied to the excitation winding via the power supply means J ₁ shortly after the power supply is supplied to the excitation winding.

In this case, the power supplied to the excitation winding L ₁ via the power supply means J1 magnetizes the magnetic poles P ₁ and P ₂ of the magnetic member B ₁ to the north and south poles. In this case, the north pole and the pole of the dual-pole permanent magnet M ₁ are located opposite the ends a of the poles P ₁ and P ₂ , so that the repulsive force between the pole P ₁ magnetized into the north pole and the north pole and between the pole P ₂ into the south pole and the south pole As a result, a large clockwise rotational force is generated in the double magnetic pole permanent magnet M ₁ . Thus, a clockwise rotational force is generated at the rotor R to rotate the rotor counterclockwise.

Times and e R is rotated in the clockwise direction, when further rotated to exceed 45 ° from the first state, the north pole and south poles of the double magnetic pole permanent magnet M ₁ is close to stimulate P ₂ and P ₁ is magnetized in the Antarctic and Arctic . Accordingly, due to the suction force between the magnetic poles P ₂ magnetized in the north pole and the south pole and between the magnetic poles P ₁ magnetized into the south pole and the south pole, a large rotational torque of the double magnetic pole permanent magnet M ₁ is generated clockwise.

Further, if the power supplied to the excitation winding L ₂ via the power supply means J ₃ is activated in the vicinity of the moment when the rotor R rotates clockwise more than 45 ° from the first rotational position, the magnetic pole P of the magnetic member B _{2 3} and P ₄ are magnetized to the north and south poles at that moment. In this case, since the north pole and south pole of the double magnetic pole permanent magnet M ₂ are placed opposite to the poles P ₃ and P ₄ , the repulsive force between the poles magnetized into the north pole and the north pole and between the poles P ₃ magnetized into the south pole and the south pole is doubled. Clockwise rotational torque is generated on the magnetic pole permanent magnet M ₂ .

Thus, the rotor R rotates clockwise.

Rotor R rotates clockwise and rotates 90 ° or more from the first state, and the north and south poles of the double magnetic pole permanent magnet M ₁ are magnetic poles P ₂ and P ₁ of the magnetic member B ₁ magnetized to the south pole and the magnetic poles. As it rotates in a relation to the terminal b of, the rotational force does not occur in the double magnetic pole permanent magnet M ₁ . If generated, there is very little clockwise rotational torque. However, the north and south poles of the double magnetic pole permanent magnet M ₂ are disposed opposite the ends a of the poles P ₃ and P ₄ magnetized to the south pole and the north pole, and thus between the poles P ₃ magnetized to the north pole and the north pole and between the south pole and the north pole. A large clockwise rotational torque is generated by the repulsive force between the magnetized magnetic poles P ₄ . Thus, a clockwise rotational torque is generated at the rotor to rotate the rotor clockwise.

When the rotor R rotates clockwise and rotates further by 135 ° from the first rotational position described above, the north pole and south pole of the double magnetic pole permanent magnet M ₁ are the pole P of the magnetic member B ₁ magnetized to the south pole and the north pole. Since it rotates opposite to ₂ and P ₁ , no rotational torque is generated in the double magnetic pole permanent magnet M ₁ . Even if there is a rotational torque, there is very little counterclockwise rotational torque. However, a double stimulation permanent magnet M ₂ in the Arctic and Antarctic, South Pole and the magnetic pole is magnetized to the north pole P _4, and so each access to P _3, magnetic pole is magnetized to the north and south poles P ₄ and between the magnetic poles are magnetized in the Antarctic and Arctic P ₃ A large clockwise rotational force is generated in the double magnetic pole permanent magnet M ₂ by the suction force therebetween. Thus, the rotor R rotates clockwise.

When the rotor R rotates clockwise and further rotates more than 180 ° from the first rotational position, the north pole and south pole of the double magnetic pole permanent magnet M ₂ are the poles P of the magnetic member B ₂ magnetized to the south pole and the north pole. Since it rotates in the opposite relationship to ₄ and P ₃ , no rotational torque is generated in the double magnetic pole permanent magnet M ₂ . If there is a rotational torque, there is very little rotational direction torque. However, since the north pole and south pole of the double magnetic pole permanent magnet M ₁ deviate from the opposite relationship to the poles P ₂ and P ₁ magnetized to the south pole and the north pole, the rotation of the rotor R by more than 180 ° clockwise from the first state A large rotating torque that prevents occurs in the double magnetic pole permanent magnet M. Therefore, the rotor R does not rotate clockwise by more than 180 degrees from the first rotational position.

In the case described above, it occurs when supplying power to the excitation winding L ₁ via the power supply means J ₁ is slightly faster than supplying power to the excitation winding L ₂ via the power supply means J ₃ . In the opposite case, however, although not described in detail, in contrast to the above case, the rotor R rotates 180 ° counterclockwise from the first rotational position.

For the reason described above, when the display element E is assumed to be in the first state as described above in the excitation windings L ₁ and L ₂ via the power supply means J ₁ and J ₃ , when the power is supplied, the display element E switches. And remain in the third state.

It is assumed that the rotor R of the motor mechanism is placed in the fourth rotational position, and the display element E is placed in a fourth state in which F ₄ of the display surface member D faces forward. In the fourth state of the display element, though, the power supply means and power is supplied to the field winding L ₁ of the stator S of the motor mechanism Q to J _2, substantially at the same time via the power supply means J ₃ field winding in a short time Even when power is supplied to L ₂ , as shown in FIG. 6, the display element is maintained in the fourth state.

The reason is as follows. Since power is supplied to the excitation winding L ₁ via the power supply means J ₂ , the magnetic poles P ₁ and P ₂ of the magnetic member B ₁ are magnetized to the south pole and the north pole to generate a small clockwise rotational torque to the double magnetic pole permanent magnet member M ₁ . Rotate the rotor R clockwise. Power is supplied to the excitation winding L2 via the power supply means T ₃ , but the magnetic poles P ₃ and P ₄ of the magnetic member B2 are magnetized to the north pole and the south pole to generate a small counterclockwise rotational torque to the double magnetic pole permanent magnet member M ₂ . To rotate the rotor R counterclockwise. Therefore, it is possible not to generate rotational torque on the rotor R or to generate very little clockwise or counterclockwise rotational torque. The north and south poles of the double magnetic pole permanent magnet member M ₁ are held in opposite relation to the poles P ₁ and P ₂ of the magnetic member B ₁ magnetized to the south pole and north pole when a small clockwise rotational torque is generated in the rotor. do. Therefore, no rotating torque is generated in the double magnetic pole permanent magnet member M ₁ which prevents the rotor R from rotating clockwise. However, the rotational torque that prevents the clockwise rotational movement of the rotor R because the north pole and south pole of the double pole member M ₂ rotates out of the opposing relationship to the poles P ₄ and P ₃ of the magnetic member B ₂ magnetized to the south pole and the north pole. Occurs in the double magnetic pole permanent magnet member M ₂ . In this case, when the counterclockwise rotational torque is generated in the rotor R, the north pole and the south pole of the double magnetic pole permanent magnet M ₂ rotate out of an opposing relationship to P ₄ and P ₃ magnetized to the south pole and the north pole. Therefore, no rotational torque is generated in the double magnetic pole permanent magnet member M ₂ which prevents rotation in the counterclockwise direction of the rotor R.

In this case, however, the north and south poles of the double magnetic pole permanent magnet member M ₁ deviate from the opposing relations to the poles P ₁ and P ₂ in which the south pole and the north pole are magnetized. It is generated in the double magnetic pole permanent magnet member M ₁ . For the reasons mentioned above, even when power is supplied to the excitation windings L ₁ and L ₂ via the power supply means J ₂ and J ₃ , the display element E is still in this state when the display element E is in the fourth state. maintain. Power is supplied via the power supply means J ₂ when the display element E is in the fourth state, and power is supplied to the excitation winding L ₂ via the power supply means J ₄ almost simultaneously in a very short time, as shown in FIG. As described above, the rotor R of the motor mechanism Q is assumed to be in the first state as described above, where the display element E is switched so that the display surface F ₁ is maintained in the first state in which the forward direction is directed.

The reason is as follows.

Since power is supplied to the excitation winding L ₁ via the power supply means J ₂ , the magnetic poles P ₁ and P ₂ of the magnetic member B ₁ are magnetized to the south pole and the north pole. Even in this case, a double stimulation permanent magnet member M so ₁ of the polar and therefore opposite the end of the magnetic pole of the Antarctic P ₁ and P _2, a double magnetic pole rotation torque is not generated in the permanent magnet member M _1, and is, if generated, Very little clockwise rotational torque is produced. Even when power is supplied to the excitation winding L ₂ via the power supply means J ₄ , the magnetic poles P ₃ and P ₄ of the magnetic member B ₂ are magnetized to the south pole and the north pole, in this case, the south pole and the double pole permanent magnet M ₂ . When the north pole is placed opposite the ends a of the poles P ₃ and P ₄ , the double pole permanent magnet M ₂ is clocked by the repulsive force between the pole P ₄ magnetized to the north pole and the north pole and between the pole P ₃ magnetized to the south pole and the south pole. Large rotational torque in the direction is generated. Thus, clockwise rotational torque is generated at the rotor R, thereby generating the rotor clockwise.

When the rotor R rotates clockwise and rotates more than 45 ° from the fourth state, the north pole and south pole of the double magnetic pole permanent magnet are with respect to the poles P ₁ and P ₂ of the magnetic member B ₁ magnetized to the south pole and the north pole. Since they rotate in the opposite relationship, rotational torque is not generated in the double-pole permanent magnet M ₁ , and even if it is generated, a small rotational torque in the counterclockwise direction is generated. However, since the north and south poles of the double-pole permanent magnet M ₂ are close to the poles P ₃ and P ₄ magnetized to the south pole and the north pole, between the poles P ₃ magnetized to the north pole and south pole and between the poles P ₄ magnetized to the south pole and the north pole. Due to the suction force of, large clockwise rotational torque is generated in the double magnetic pole permanent magnet M ₂ . Thus, the rotor R rotates clockwise.

When the rotor R rotates clockwise and rotates further 90 degrees from the fourth state, the north pole and south pole of the double magnetic pole permanent magnet M ₂ are magnetic poles P ₃ and P ₄ of the magnetic member B ₂ magnetized to the south pole and the north pole. Since it rotates in the opposite direction, rotation torque is not generated in the double magnetic pole permanent magnet M ₂ . Even if it is generated, very little clockwise rotational torque is generated. However, the north pole and south pole of the double magnetic pole permanent magnet M ₁ are kept out of opposition to the poles P ₁ and P ₂ magnetized to the south pole and the north pole, thereby preventing the rotor R from rotating clockwise by more than 90 ° from the fourth state. A large rotating torque is generated in the double magnetic pole permanent magnet M ₁ . Therefore, the rotor R does not rotate clockwise by more than 90 degrees from the fourth state. For this reason, when the display element E is supplied to the excitation windings L ₁ and L ₂ in the fourth state via the power supply means J ₁ and J ₂ , the display element E is switched and maintained in the first state. When the display element E is in the fourth state, power is supplied to the excitation winding L ₁ via the power supply means J ₁ , and when power is supplied to the excitation winding L ₂ via the power supply means J ₄ at about the same time, the tenth time. As shown in the figure, the rotor R of the motor mechanism Q is assumed to be the second rotational position. Here, the display element E is switched and maintained in the second state in which the display surface F ₂ faces forward.

The reason is as follows.

It is assumed that power is first supplied to the excitation winding L ₁ via the power supply means J ₁ , and power is supplied to the excitation winding L ₂ via the power supply means J ₄ after a while.

In this case, the power supplied to the excitation winding L ₁ via the power supply means J ₁ magnetizes the magnetic poles P ₁ and P ₂ of the magnetic member B ₁ having the north pole and the south pole. In this case, the north and south poles of the double magnetic pole permanent magnet M ₁ are placed opposite the ends b of the poles P ₁ and P ₂ , so that between the pole P ₁ magnetized to the north pole and the north pole, and between the pole P ₂ magnetized to the south pole and the south pole. Due to the repulsive force, a large rotational torque in the counterclockwise direction is generated in the double magnetic pole permanent magnet M ₁ . Thus, a counterclockwise rotation torque is generated in the rotor R to rotate R counterclockwise.

The rotor R rotates in the counterclockwise direction, and a fourth when rotated more than 45 ° from the rotational position of a dual magnetic pole permanent magnet M ₁ is a north pole and south poles, close to stimulate P ₂ and P ₁ is magnetized in the Arctic and Antarctic. This causes a large counterclockwise rotational force to be generated in the dual stimulus magnet M ₁ by the attraction force between the magnetic pole P ₂ magnetized to the north pole and the south pole and between the magnetic pole P ₁ magnetized to the south pole and the north pole. If the power is supplied to the excitation winding L ₂ via the power supply means J ₄ when the rotor R rotates counterclockwise by more than 45 ° from the fourth rotation position, the poles P ₄ and P ₃ of the pole B ₂ are the north pole and the south pole. Magnetized immediately from In this case, the north and south poles of the double magnetic pole permanent magnet M ₂ are placed opposite to the poles P ₄ and P ₃ , so that the repulsive force between the pole P ₄ magnetized into the polar pole and the north pole and between the pole P ₃ magnetized into the south pole and Antarctica. As a result, a counterclockwise rotational torque is generated in the double magnetic pole permanent magnet P ₄ . Thus, the rotor R rotates counterclockwise.

When the rotor R rotates counterclockwise and rotates further 90 degrees from the fourth rotational position, the north pole and south pole of the double magnetic pole permanent magnet member M ₁ are the poles P ₂ of the magnetic pole member B ₁ magnetized to the south pole and the north pole. Opposite the terminal a of P ₁ , no rotational torque is generated in the double magnetic pole permanent magnet member M ₁ . If generated, there is very little counterclockwise torque. However, this time, the double stimulation permanent magnet member M ₂ Arctic and Antarctic, North Pole and the magnetic poles of the magnetic element B ₂ is magnetized in the Antarctic P ₄ and be opposed to the end b of the P _3, magnetic pole is magnetized to the north pole and the north pole P ₄ between And a large rotational force in the counterclockwise direction is generated in the double magnetic pole permanent magnet member M ₂ by the repulsive force between the magnetic pole P ₃ magnetized into the south pole and the south pole. Accordingly, torque in the counterclockwise direction is generated in the rotor R to rotate the rotor in the counterclockwise direction.

When the rotor R rotates counterclockwise and rotates more than 135 ° from the fourth rotation position, the north pole and south pole of the double pole permanent magnet M ₁ are the poles P ₂ of the magnetic member B ₁ magnetized to the south pole and the north pole. be disposed opposite to P _1, the double stimulation permanent magnet M rotates so torque is not generated in the _first and, if a rotational torque is generated in the permanent magnet magnetic pole double M ₁ by road, a very small clockwise rotating torque. However, since the south pole and the north pole of the double magnetic pole permanent magnet M ₂ are close to the poles P ₃ and P ₄ magnetized to the south pole and the north pole, they are magnetized between the pole P ₃ magnetized to the north pole and the south pole of the double pole pole, and to the south pole and south pole. Due to the suction force between the magnetic poles P ₄ , a large rotational torque in the counterclockwise direction is generated in the double magnetic pole permanent magnet M ₂ . Thus, the rotor R rotates counterclockwise.

When the rotor R rotates counterclockwise and rotates more than 180 ° from the fourth rotational position, the north pole and south pole of the double pole permanent magnet M ₂ are the poles P ₃ and P of the magnetic member B ₂ magnetized to the south pole and the north pole. _By rotating in the opposite direction to ₄ , the rotational torque is not generated in the double magnetic pole permanent magnet M ₂ , and even if it is generated, very little counterclockwise rotational torque is generated. However, since the north pole and south pole of the double magnetic pole permanent magnet M ₁ do not face the poles P ₂ and P ₁ magnetized to the south pole and the north pole, the rotor R is prevented from rotating more than 180 ° counterclockwise from the first state. Large rotating torques occur in the double magnetic pole permanent magnet M ₁ . Therefore, the rotor R does not rotate more than 180 degrees counterclockwise from the first rotational position.

For the reason described above, assuming that the display element E is in the fourth state via the power supply means J ₁ and J4, when power is supplied to the excitation windings L ₁ and L ₂ , the display element is switched to the second state. Is maintained.

When the display element E is in the fourth state, the power is supplied to the excitation winding via the power supply means J _1, and the power is supplied to the excitation winding L ₂ via the power supply means J ₃ almost simultaneously in a very short time. As shown in FIG. 11, the rotor R of the motor mechanism Q is assumed to be in the third rotational position. Here, the display element E is switched to maintain the third state in which the display surface F ₃ faces forward.

The reason is as follows.

Since power is supplied to the excitation winding L ₂ via the power supply means J ₃ , the magnetic poles P ₃ and P ₄ of the magnetic member B ₂ are magnetized to the north pole and the south pole. However, in this case, since the south pole and the north pole of the double magnetic pole permanent magnet member M face the ends a of the magnetic poles P ₃ and P ₄ , no rotational torque is generated in the double magnetic pole permanent magnet member M ₂ . However, even if this occurs, this is a very small counterclockwise rotational torque. Since power is supplied to the excitation winding L ₁ via the power supply means J ₁ , the magnetic poles P ₁ and P ₂ of the magnetic member B ₁ are magnetized to the north pole and the south pole. In this case, the north pole and the pole of the dual pole permanent magnet M ₁ are placed opposite the ends b of P ₁ and P ₂ , so that the repulsive force between P ₁ magnetized to the north pole and the north pole and between pole P ₂ magnetized to the south pole and the south pole This causes a large rotational torque in the counterclockwise direction to the double magnetic pole permanent magnet M ₁ . Therefore, a counterclockwise rotational torque is generated in the rotor R to rotate the rotor R counterclockwise.

When the rotor R rotates counterclockwise and rotates further 45 degrees from the fourth rotational position, the north pole and south pole of the double magnetic pole permanent magnet M ₂ are the poles P ₄ of the magnetic member B ₂ magnetized to the south pole and the north pole. Positioned opposite to P ₃ , no rotational torque is generated in the double magnetic pole permanent magnet M ₂ . Even if a rotational torque is generated, there is very little clockwise rotational torque. However, since the north pole and south pole of the double pole permanent magnet M ₁ are close to the poles P ₂ and P ₁ where the south pole and the north pole are magnetized, the pole P ₂ magnetized to the north pole and the south pole and the pole P ₁ magnetized to the south pole and the north pole Due to the attraction force, a large rotational force in the counterclockwise direction is generated in the double magnetic pole permanent magnet M ₁ . Thus, the rotor R rotates counterclockwise.

When the electromagnet R rotates counterclockwise and further rotates 90 ° or more from the fourth rotational position, the north pole and south pole of the double magnetic pole permanent magnet M ₁ are the poles P of the magnetic member B ₁ magnetized to the south pole and the north pole. _{It is} rotated opposite to ₂ and P ₁ so that no rotational torque is generated in the double magnetic pole permanent magnet M ₁ , or even if it is generated, it is a very small counterclockwise rotational torque. However, since the north pole and south pole of the double pole permanent magnet M ₂ rotate opposite to the poles P ₄ and P ₃ magnetized to the south pole and the north pole, the rotor R rotates counterclockwise by 90 ° or more from the fourth rotational position. A large rotational torque is generated in the double magnetic pole permanent magnet M ₂ which prevents this from happening. Therefore, the rotor R does not rotate in the counterclockwise direction by more than 90 degrees from the fourth rotational position.

For the reason described above, when the display element E is supplied to the excitation windings L ₁ and L ₂ on the assumption that the display element E is in the fourth state via the power supply means J ₁ and J ₃ , the display element E is switched and maintained in the third state. do.

The rotor R of the motor mechanism is placed in the second rotational position, where the display element E is in a second state in which the display surface F ₂ of the display surface member P faces forward. In the second state of the display element E, power is supplied to the excitation winding L ₁ of the stator S of the motor mechanism Q via the power supply means J ₁ , and the excitation winding L via the power supply means J ₄ almost simultaneously in a very short time. _{Even if} supplied to ₂ , as shown in FIG. 7, the display element E is maintained in the second state.

The reason for this is as follows.

Since power is supplied to the excitation winding L ₁ via the power supply means J ₁ , the magnetic poles P ₁ and P ₂ of the magnetic member B ₁ are magnetized to the north pole and the south pole, so that the clockwise small rotational torque is applied to the double magnetic pole permanent magnet member M ₁ . Causes the rotor R to rotate clockwise. Power is supplied to the excitation winding L ₂ via the power supply means J ₄ , but the magnetic poles P ₃ and P ₄ of the magnetic member B ₂ are magnetized to the south pole and the north pole so that a small counterclockwise rotation torque is applied to the double pole permanent magnet member M ₂ . Causes the rotor R to rotate counterclockwise. Thus, no rotational torque is generated at the rotor R, or very little counterclockwise rotational or clockwise rotational torque is generated. When a small clockwise rotational torque occurs at the rotor R, the south pole and north pole of the double magnetic pole permanent magnet member M ₁ remain opposite to the poles P ₁ and P ₂ of the magnetic member B ₁ magnetized to the current north pole and south pole. No rotation torque is generated to prevent the rotor R from rotating in the clockwise direction in the double magnetic pole permanent magnet member M ₁ . However, the rotor R in the double magnetic pole permanent magnet member M _{2 because} the north pole and the south pole of the dual pole permanent magnet member M ₂ emerge from the opposite relation to the magnetic poles P ₃ and P ₄ of the magnetic member B ₂ magnetized to the south pole and the north pole. Rotational torque is generated to prevent the clockwise rotational movement.

In addition, when the counterclockwise small rotational torque is generated in the rotor R, the north pole and south pole poles of the double magnetic pole permanent magnet member M ₂ deviate from the opposite relationship to the poles P ₃ and P ₄ that are rotated to the south pole and the north pole. It is not possible to generate a rotational torque that prevents the rotor R from rotating in the counterclockwise direction in the double magnetic pole permanent magnet member M ₂ . However, since the north and south poles of the double magnetic pole permanent magnet member M ₁ cannot escape from the opposite relationship to the poles P ₂ and P _{1 that} are rotated to the south pole and the north pole, the counterclockwise rotational movement of the rotor R in the double magnetic pole permanent magnet member M Generates torque to prevent

For this reason, the display element E will remain in this state even when power is supplied to the excitation windings L ₁ , L ₂ through the power supply means J1, J4 when the display element E is in the second state.

Display element is E is powered in a very short period of time by the power supply means J ₂ woman through the winding L ₁ and the power supply means J ₄ winding L _2, as illustrated in Figure 12 when in the second state In this case, the rotor R of the motor device Q is in the first rotor position, where the display element E is switched to the first state in which the display surface F ₁ faces the front side and then remains in this state.

The reason for this is as follows.

Power is supplied to the excitation winding L ₂ through the power supply means J _{4 so} that the magnetic poles P ₃ and P ₄ of the magnetic member B ₂ are magnetized to the south pole and the north pole. In the above case, however, since the double magnetic pole permanent magnet member M ₂ is opposed to the ends a of the magnetic poles P ₃ and P ₄ , no rotational torque is generated in the double magnetic pole permanent magnet member M ₂ , and even if only a very small Counterclockwise rotation torque. By supplying power to the excitation winding L ₁ through the power supply means J ₂ , the magnetic poles P ₁ and P ₂ of the magnetic member B ₁ are magnetized to the south pole and the north pole.

In this case, since the north pole and south pole of the double magnetic pole permanent magnet M ₁ are placed opposite the ends b of the poles P ₁ , P ₂ , between the pole P ₂ magnetized into the north pole and the north pole, and the pole P magnetized into the south pole and the south pole. a large counterclockwise rotating torque occurs in the magnetic pole double permanent magnet M ₁ by the repulsive force between the _first. Thus, a counterclockwise rotation torque is generated at the rotor R to drive the rotor R counterclockwise.

Thus, when the rotor R rotates counterclockwise and also rotates more than 45 ° from the second rotational position, the north pole and south pole of the double magnetic pole permanent magnet M ₂ are the poles of the magnetic member B ₂ magnetized to the south pole and the north pole. It is opposed to P ₃ and P ₄ . Thus, no torque is generated in the double magnetic pole permanent magnet M ₂ , and only a small counterclockwise rotation torque is generated even if it is generated. However, since the north pole and south pole of the double magnetic pole permanent magnet M ₁ approaches the poles P ₁ and P ₂ magnetized to the south pole and the north pole, between the pole P ₁ magnetized to the north pole and the south pole, and magnetized to the south pole and the north pole. Due to the suction force between the poles P ₂ , a large rotational torque in the counterclockwise direction is generated in the double magnetic pole permanent magnet M ₁ . As a result, the rotor R rotates counterclockwise.

When the rotor R rotates counterclockwise and when rotates counterclockwise by more than 90 ° from the second rotational position, the north pole and south pole of the double-pole permanent magnet M ₁ are magnetically magnetized to the south pole and the north pole. The magnetic poles P ₁ and P ₂ of the member B ₁ are changed in an opposite relationship. Thus, no rotational torque is generated in the double-pole permanent magnet M ₁ , and even if it is generated, only a small counterclockwise rotational torque is generated. However, since the north and south poles of the double magnetic pole permanent magnet M ₂ deviate from the opposing relationship to the poles P ₃ and P _{4 that} are rotated to the south pole and the north pole, the rotor R rotates counterclockwise by 90 ° or more from the second rotational position. A large rotating torque is generated in the double-pole permanent magnet M ₂ which prevents this from happening. Thus, the rotor R does not rotate counterclockwise by more than 90 degrees from the second rotational position.

For the reason described above, when the display element E is brought into the above-described second state, when the power is supplied to the excitation windings L ₁ and L ₂ through the power supply means J ₂ , J ₄ , the display element E is firstly provided. The state is switched to and maintained. When the display element E is in the second state, and the power is supplied to the excitation winding L ₁ through the power supply means J ₂ for a very short time, and the excitation winding (via the power supply means J ₃ ) When supplied to L ₂ ), as shown in FIG. 13, the rotor R of the motor mechanism Q is brought into the fourth rotational position, where the display element E is the display surface F ₄ . It is switched to the front facing state and then maintained in this state.

The reason for this is as follows.

It is assumed that the power through the power supply means (J ₂₎ is supplied to the field winding (L ₁₎ and power is supplied to the field winding (L ₂₎ through the power supply means (J ₃₎ and then bit disclosed that the power supply .

In this case, the magnetic poles (P ₁ , P ₂ ) of the magnetic member (B ₁ ) is supplied to the excitation winding (L ₁ ) through the power supply means (J ₂ ) is magnetized to the south pole and the north pole. In this case, the south pole and the north pole of the double-pole permanent magnet M ₁ are opposed to the ends b of the poles P ₁ and P ₂ , and between the pole P ₂ magnetized to the north pole and the north pole. Due to the repulsive force and the repulsive force between the pole (P ₁ ) magnetized into the south pole and the south pole, a large rotating torque in the counterclockwise direction is generated in the double-pole permanent magnet (M ₁ ). Accordingly, the counterclockwise rotation torque is generated in the rotor R to drive the rotor R counterclockwise.

Thus, when the rotor R rotates counterclockwise and rotates more than 45 from the second state, the north pole and south pole of the double-pole permanent magnet M ₁ are magnetized to the south pole and north pole (P ₁ , P). ₂ ) and thus, a large rotation in the counterclockwise direction in the dual-pole permanent magnet M ₁ due to the suction force between the pole magnetized to the north pole and the south pole and the attraction force between the pole pole magnetized to the south pole and the north pole (P ₂ ) Torque is generated.

In addition, when the power is supplied to the excitation winding through the power supply means J ₃ at the same time as or close to the time when the rotor R rotates more than 45 ° counterclockwise from the second rotation position, the magnetic member ( The magnetic poles P ₃ and P ₄ of B ₂ ) are immediately magnetized to the north and south poles. In this case, since the north pole and south poles of the double magnetic pole permanent magnets (M ₂₎ is a magnetic pole (P _3, P ₄₎ being placed in confronting relationship, the repelling force between the pole (P ₃₎ magnetized to the north pole and the North and the South Pole and Due to the repulsive force between the pole P ₄ magnetized to the south pole, a large rotational torque in the counterclockwise direction is generated in the double-pole permanent magnet (M ₂ ). As a result, the rotor R rotates counterclockwise. When the rotor R rotates counterclockwise and rotates more than 90 ° from the second position, the north pole and south pole of the double-pole permanent magnet M ₁ are magnetic poles of the magnetic member B ₁ magnetized to the south pole and the north pole. In the opposite relationship to the ends of P ₁ and P ₂ , no rotational torque is generated in the double-pole permanent magnet, or even a small counterclockwise rotational torque is generated. However, since the north and south poles of the double-pole permanent magnet (M ₂ ) are opposed to the ends of the magnetic poles P ₃ and P ₄ magnetized to the north pole and the south pole, the repulsive force between the pole P ₃ magnetized to the north pole and the north pole And the repulsive force between the south pole and the south magnetized pole P ₄ generates a large counterclockwise rotational torque in the double-pole permanent magnet M ₂ .

Thus, a counterclockwise rotation torque is generated in the rotor R to drive the rotor R counterclockwise. When the rotor R rotates in the counterclockwise direction and especially when the rotor rotates more than 135 from the second rotational position, the north pole and south pole of the double-pole permanent magnet M ₁ are magnetized to the south pole and the north pole. ₁ ) the magnetic poles P ₁ and P ₂ are opposed to each other, so that no rotational torque is generated in the double-pole permanent magnet M ₁ , and only a small counterclockwise rotational torque, if generated. However, since the north pole and south pole of the dual-pole permanent magnet (M ₂ ) approaches the magnetic poles P ₄ and P ₃ magnetized to the south pole and the north pole, the suction force between the north pole and the south pole magnetized pole (P ₄ ) and the south pole The suction force between the pole and the pole magnetized pole P ₃ causes a large counterclockwise rotational torque in the double-pole permanent magnet. As a result, the rotor R rotates counterclockwise.

When the rotor R rotates in the counterclockwise direction and when the rotor is rotated more than 180 ° from the second rotational position, the north and south poles of the dual magnetic permanent magnet are magnetized to the south pole and north pole (B ₂ ). It is opposed to the magnetic poles (P ₄ , P ₃ ), so that the rotational torque does not occur in the double-pole permanent magnet (M ₂ ), even if only a very small counterclockwise rotational torque.

However, since the north and south poles of the double-pole permanent magnet M ₁ are not opposed to the magnetic poles P ₁ and P ₂ magnetized to the south pole and the north pole, the rotor R counterclockwise more than 180 ° from the second position. The large rotational torque that prevents the rotation in the direction is the dual magnetic permanent magnet generation.

Thus, the rotor R does not rotate in the counterclockwise direction by more than 180 degrees from the second rotational position. When power is first supplied to the excitation winding L ₁ through the power supply means J ₂ , and then to the next excitation winding L ₂ immediately after the electron power is supplied through the next power supply means J ₃ . Although described above, but not described in detail, in the reverse case, the rotor rotates 180 degrees from the first rotational position clockwise from above.

For reasons of the above-mentioned fact, the power supply is to be supplied to the excitation windings L ₁ , L ₂ through the power supply means J ₂ , J ₃ in the state where the display element E is in the above-described second state. At this time, the display element E is switched to and maintained in the fourth state.

When the display element E is in the second state and the power is supplied to the excitation winding L ₁ through the power supply means J ₁ for a short time, the excitation winding (via the power supply means J ₃ ) When supplied to L ₂ ), as shown in FIG. 14, the rotor of the motor mechanism Q is in the third rotational position, where the display element E is in a third state with the display surface facing to the front. Switch and then remain in this state.

The reason for the above is as follows. By supplying power to the excitation winding L ₂ through the power supply means J ₁ , the magnetic poles of the magnetic member B ₁ are magnetized to the north pole and the south pole. In this case, however, since the south pole and the north pole of the double magnetic pole permanent magnet M ₁ oppose the ends of the magnetic poles P ₁ and P ₂ , there is no rotational torque in the double magnetic pole permanent magnet member M ₁ , and therefore, There is only a small clockwise rotational torque. However, power is supplied to the excitation winding L ₂ through the power supply means J ₃ , so that the magnetic poles P ₃ and P ₄ of the magnetic member B ₂ are magnetized to the north pole and the south pole. In this case, the repulsive force between the north pole and the north pole magnetized pole (P ₃ ) and the north pole stimulation of the double-pole permanent magnet (M ₂ ) is placed opposite the ends (a) of the poles (P ₃ , P ₄ ) Due to the repulsive force between the pole P ₄ magnetized to the south pole and the south pole, a large rotational torque in the clockwise direction is generated in the double pole permanent magnet M ₂ . Therefore, a clockwise rotational torque is generated in the rotor R to drive the rotor R clockwise.

Thus, when the rotor R rotates clockwise and rotates more than 45 ° from the second position, the north pole and south pole of the double pole permanent magnet M ₂ of the double pole permanent magnet M ₁ are the south pole and the north pole. Approaching the magnetized magnetic poles P ₄ and P ₃ , the suction force between the magnetized pole P ₄ to the north and south poles of the magnet and the suction force between the south pole and the north pole magnetized poles P ₃ of the magnet As a result, a large clockwise rotational torque is generated in the double-pole permanent magnet (M ₂ ). As a result, the rotor R rotates clockwise.

Thus, when the rotor R rotates clockwise and rotates more than 90 ° from the second rotational position, the north pole and south pole of the double-pole permanent magnet M _{2 are} formed of the magnetic member B ₂ magnetized to the south pole and the north pole. There is an opposing relationship to the stimulus. At this time, the rotational torque is not generated in the double-pole permanent magnet (M ₂ ). Although generated, there is only a very small clockwise rotational torque. However, the double stimulation permanent magnet because the Arctic and Antarctic of (M ₁₎ to escape from the relationship opposite to the magnetic pole (P _2, P ₁₎ magnetized in the Antarctic and polar, double stimulation permanent magnet (M ₁₎ a rotor (R There is a large rotational torque that prevents rotation of 90 ° or more from the second state. Thus, the rotor R does not rotate clockwise by more than 90 ° from the second rotational position.

For the reason described above, when power is supplied to the excitation windings L ₁ and L ₂ through the power supply means in the state where the display element is in the second state described above, the display element E is switched to and maintained in the third state. .

Assuming that the rotor R of the motor mechanism is in the third rotational position, the display element E is in the third position with the display surface member D of the display element F ₃ facing forward. . When the display element E is in the third state, power is supplied via the power supply means J ₁ to the excitation winding L ₁ of the fault S of the motor mechanism Q for a short time and then. In the case where power is supplied to the excitation winding L ₂ through the power supply means J ₃ , the display element E will be maintained in the third state as shown in FIG. 8.

The reason for this is as follows.

By supplying power to the excitation winding (L ₁ ) through the power supply means (J ₁ ), the magnetic poles (P ₁ , P ₂ ) of the magnetic member (B ₁ ) is magnetized to the north pole and south pole, so that the dual magnetic pole permanent magnet member (M ₁₎ A small counterclockwise rotational torque is generated at) to cause the rotor R to rotate counterclockwise. However, by supplying power to the excitation winding (L ₂ ) through the power supply means (J ₃ ), the magnetic poles (P ₃ , P ₄ ) of the magnetic member (B ₂ ) is a small clockwise direction in the dual magnetic permanent magnet (M ₂ ) Generate torque to cause the rotor R to rotate clockwise. Thus, no rotational torque is generated in the rotor R or a very small counterclockwise or clockwise torque is given. If less clockwise rotational torque is generated in the rotor, the north and south poles of the dual-pole permanent magnet (M ₂ ) are opposed to the poles (P ₄ , P ₃ ) of the magnetic material (B ₂ ) magnetized to the south pole and north pole. No rotating torque is generated in the double-magnet permanent magnet member M ₁ that is held in relation to prevent the rotor R from rotating in the clockwise direction. However, since the north pole and south pole of the double magnet permanent magnet member M ₂ deviate from the opposite relationship to the magnetic poles P ₄ and P ₃ of the magnetic member B ₂ magnetized to the south pole and the north pole, the rotor R If clockwise rotational torque is generated on the rotor, the north and south poles of the double-magnet permanent magnet member are out of opposition to the magnetic poles P ₂ and P ₁ magnetized to the south pole and north pole, and the rotor (R) counterclockwise. Rotating member torque that prevents rotation is not generated in the double-magnet permanent magnet member. However, since the north and south poles of the double-magnet permanent magnet member are out of the opposing relation to the magnetic poles of the magnetized magnets to the south pole and the north pole, the rotational torque that prevents the rotor R from moving in the counterclockwise direction is provided. Occurs at (M ₂ ).

For this reason, even if power is supplied to the excitation windings L ₁ , L ₂ via the power supply means J ₁ , J ₃ and the display element E is in the third state, It remains in this state.

When the display element E is in the third state and the power is supplied to the excitation winding L ₁ for a short time through the power supply means J ₂ , the power is supplied for a short time before and after the start of the power supply. When power is supplied to the excitation winding L ₂ through the supply means J ₄ , as shown in FIG. 15, the rotor of the motor mechanism Q is in the first rotational position, where the display element E ) Is switched to the state in which the display surface F ₁ faces to the front side and then maintained in this state.

The reason for the above is as follows.

Assume the power supply to the field winding (L ₁₎ jyeotdago previously made more power to the field winding (L ₂₎ through the power supply means (J ₄₎ via the power supply means (J _2).

In this case, the magnetic poles P ₁ and P ₂ of the magnetic member B ₁ are magnetized to the south pole and the north pole by supplying power to the excitation winding L ₁ through the power supply means J ₂ . In this case, since the south pole and the north pole of the double-pole permanent magnet M ₁ face the ends a of the poles P ₁ and P ₂ , the large clockwise rotational torque is magnetized to the north pole and the north pole of the magnet. The repulsive force between the polarized poles P ₂ and the repulsive force between the poles P ₁ magnetized by the south pole and the south pole is generated in the dual magnetic pole permanent magnet M ₁ , so that the clockwise rotational torque is generated by the rotor ( Is generated at R) and drives the rotor R clockwise.

So when the rotor R rotates clockwise and if it rotates more than 45 ° from the third rotational position, the north pole and south pole of the double-pole permanent magnet M ₁ are magnetized to the south pole and north pole (P). _1, when the access to P _2), a large rotational torque in the clockwise direction by the repulsive force between the pole (P ₁₎ the pole magnetized in a repulsive force and south poles and the north pole of the magnet between the (P ₂₎ magnetized in said magnetic poles and south poles It occurs in the dual stimulation permanent magnet (M ₁ ) of.

Further, the above-described power supply to the excitation winding L ₂ through the power supply means J ₄ is made at or near the time when the rotor R is rotated clockwise by 45 ° or more from the third rotational position. When magnetic poles P ₃ and P ₄ of magnetic member B ₂ will immediately magnetize to the Antarctic and the North Pole. In this case, since the south pole and the north pole of the double-pole permanent magnet M ₂ are in opposition to the stimulus, the clockwise rotational torque is the repulsive force between the pole magnetized to the north pole and the south pole and the south pole and north pole magnetization of the magnet. The repulsive force between the two poles causes them to form in the double-pole permanent magnets. The resulting rotation rotates clockwise.

When the rotor R rotates clockwise and rotates more than 90 ° from the third rotational position, the north pole and south pole of the double-pole permanent magnet M ₁ are magnetic poles of the magnetic member B ₁ magnetized to the south pole and the north pole. It is in a position facing the end portion (b) of (P _1, P _2). Thus, even if the rotational torque does not occur in the double-pole permanent magnet (M ₁ ), only a very small clockwise rotational torque is generated. However, since the north and south poles of the dual-pole permanent magnet (M ₂ ) are opposed to the ends of the magnetic poles P ₄ and P ₃ magnetized to the north and south poles, the north pole and north pole magnetized poles (P ₄ ) of the magnet. The large clockwise rotational torque is generated in the double-pole magnet M ₂ by the repulsive force between and the repulsive force between the south pole of the magnet and the pole P ₃ magnetized to the south pole. As a result, a clockwise torque is generated from the rotor R to drive the rotor clockwise.

So when the rotor R rotates clockwise and rotates more than 135 ° from the third rotational position, the north and south poles of the dual-pole permanent magnet M ₁ are the magnetic members B ₁ magnetized to the south pole and the north pole. It rotates in the opposite relationship to the magnetic poles (P ₁ , P ₂ ) of. Therefore, the rotational torque does not occur in the dual-stimulated permanent magnet (M ₁ ), but only a very small counterclockwise rotational torque occurs. However, since the north and south poles of the dual-pole permanent magnet (M ₂ ) approach the magnetic poles P ₃ and P ₄ magnetized to the south pole and the north pole, the suction force between the magnetization pole (P ₃ ) and the north pole and south pole of the magnet Due to the suction force between the magnetizing pole P ₄ to the south pole and the north pole of the magnet, a large clockwise rotational torque occurs in the double-pole permanent magnet M ₂ . As a result, the rotor R rotates clockwise.

Thus, when the rotor R rotates clockwise and rotates more than 180 ° from the third position, the north pole and south pole of the dual-pole permanent magnet M ₂ are magnetic poles of the magnetic member B ₂ magnetized to the south pole and the north pole. It rotates in the opposite relationship to (P ₃ , P ₄ ). Thus, even if the rotational torque does not occur in the double-pole permanent magnet (M ₂ ), only a small clockwise rotational torque is generated. However, since the north and south poles of the dual-pole permanent magnet (M ₁ ) deviate from the opposite relationship to the poles (P ₁ , P ₂ ) magnetized to the south pole and the north pole, the rotor (R) is clocked more than 180 ° from the third turn. A large rotating torque that prevents rotation in the direction is generated in the double magnetic pole permanent magnet M ₁ . Thus, the rotor R does not rotate clockwise by more than 180 degrees from the third state.

The above description is for the case where progress slightly ahead of the power supply to the field winding (L _2), the power supply to the field winding (L ₁₎ via the power supply means (J ₄₎ via the power supply means (J ₂₎ will be. On the other hand, when the power supply to the excitation winding L ₂ through the power supply means J ₄ precedes the power supply to the excitation winding L ₁ through the power supply means J ₂ , the rotor R It rotates about 180 degrees at the third rotational position in the counterclockwise direction opposite from the direction as in the above. This will not be described in detail.

For this reason, when the display element E is supplied with power to the excitation windings L ₁ and L ₂ through the power supply means J ₂ and J ₄ in a state where the display element E is in the third state, the display element E Is switched to and maintained in the first state.

When the display element E is in the third state, if power is supplied to the excitation winding L ₁ through a power supply means for a short time, the power is supplied for a very short time before and after the start of the power supply. When supplied to the excitation winding L ₂ through the means J ₂ , the rotor R of the motor mechanism Q is brought into the fourth rotational position as shown in FIG. 16, whereby the display element (E) is switched to the fourth state in which the display element surface F ₄ faces the front surface and is then maintained in that state.

The reason for this is as follows.

Power is supplied to the excitation winding L ₂ through the power supply means J ₂ so that the magnetic poles P ₃ and P ₄ of the magnetic member B ₂ are magnetized to the north pole and the south pole. In this case, however, since the south pole and the north pole of the double magnet permanent magnet member M ₂ are opposed to the ends of the magnetic poles, no rotational torque occurs in the double magnet permanent magnet portion. If so, only a small clockwise rotational torque is produced. However, by supplying power to the excitation winding L ₁ through the power supply means J ₂ , the magnetic poles P ₂ and P ₃ of the magnetic member B ₁ are magnetized to the south pole and the north pole. In this case, since the south pole and the north pole of the double-pole permanent magnet M ₁ are placed opposite to the ends a of the poles P ₁ and P ₂ , the pole P ₂ magnetized to the north pole and the north pole of the magnet. Due to the repulsive force between and the repulsive force between the south pole and the south pole magnetized pole P _{1 of the} magnet, a large torque is generated in the clockwise direction in the double-pole permanent magnet M ₁ . Thus, a clockwise rotational torque is generated at the rotor, and the rotor R is driven clockwise.

Thus, when the rotor R rotates in a clockwise direction and rotates more than 45 ° from the third rotational position, the north pole and south pole of the dual-pole permanent magnet M ₂ are magnetized to the south pole and the north pole. ₂ ) are opposed to the stimulus (P ₄ , P ₃ ). Therefore, the rotational torque does not occur in the double permanent magnet M ₂ , and even if it is generated, only a very small counterclockwise rotational torque occurs. However, since the north and south poles of the dual-pole permanent magnet M ₁ approach the magnetic poles P ₁ and P ₂ magnetized to the south pole and the north pole, the attraction between the north pole and south pole magnetized poles of the magnet and the south pole and north pole Due to the suction force between the magnetized poles P ₁ , a large rotational torque in the clockwise direction is generated in the double-pole permanent magnet. As a result, the rotor is rotated clockwise.

When the rotor R rotates clockwise and rotates more than 90 ° from the third rotational position, the magnetic pole B of the magnetic member B _{1 in} which the north pole and south pole of the double-pole permanent magnet are magnetized to the south pole and the north pole ₁ , P ₂ ) are opposed to each other.

Thus, no rotational torque occurs in the double-pole permanent magnet M ₁ , but only a small clockwise rotational torque occurs. However, since the north pole and south pole of the double-pole permanent magnet M ₂ deviate from the opposite relationship to the magnetic poles P ₄ and P ₃ magnetized to the south pole and the north pole, a large amount of the rotor R which prevents the rotor R from rotating above 90 ° C. from the third rotational position is prevented. Rotating torque is generated in the double-pole permanent magnet. For this reason, the rotor does not rotate clockwise by more than 90 degrees from the third rotational position.

For the above reason, when power is supplied to the excitation winding L ₂ , L ₃ through the power supply means J ₂ , J ₃ in the state where the display element E is in the third state, the display element is switched to and maintained in the fourth state. .

The display element is in the third state, and if the power is supplied to the excitation winding L ₁ for a short time through the power supply means J ₁ , and the excitation winding through the power supply means J ₄ shortly before or after the start of the power supply. When supplied to L ₂ , the rotor R of the motor mechanism Q is switched to the second rotational state, whereby the display element E is switched to the second state toward the front surface of the display surface F ₂ and is maintained in the second state.

The reason for this is as follows. By supplying power to the excitation winding L ₁ through the power supply means J ₁ , the magnetic poles P ₁ and P ₂ of the magnetic member B ₁ are magnetized to the north pole and the south pole. In this case, since the south pole and the north pole of the double-pole permanent magnet M ₁ are opposed to the ends A of the poles P ₁ , P ₂ , there is no rotational torque in the double-pole permanent magnet M ₁ , and even if only a small counterclockwise Direction of rotation torque. However, power is supplied to the excitation winding L ₂ through the power supply means J _{4 so} that the magnetic poles P ₃ and P ₄ of the magnetic member B ₂ are magnetized to the south pole and the north pole. In the above case, the double stimulation permanent magnet M ₂ Antarctic and polar stimulation P _3, because of being placed in confronting relation to the end B of the P _4, the repulsive force and the magnet between the pole P ₄ magnetized to the north pole and the north pole of the magnet The repulsive force between the magnetic pole P ₃ magnetized by the south pole and the south pole causes a large rotational torque in the counterclockwise direction in the double-pole permanent magnet M ₂ . Thus, the counterclockwise rotation torque is generated by the rotor R so that the rotor R is driven counterclockwise.

Thus, when the rotor R rotates counterclockwise and rotates more than 45 ° from the third rotational position, the north pole and south pole of the double-pole permanent magnet M ₁ are the pole P ₁ of the magnetic member B ₁ magnetized to the south pole and the north pole. , P ₂ is opposed to. Thus, there is no rotational torque in the ground magnetic pole permanent magnet member M ₁ , and if so, there is only a very small clockwise rotational torque. However, since the north and south poles of the double-pole permanent magnet approach the magnetic poles P ₃ and P ₄ magnetized to the south pole and the north pole, the attraction force between the north pole and the south pole magnetized pole of the magnet and the pole P magnetized to the south pole and north pole of the magnet The suction force between ₄ creates a large counterclockwise rotational torque in the double-pole permanent magnet M ₂ . As a result, the rotor R rotates clockwise.

When the rotor R rotates counterclockwise and rotates more than 90 ° from the third rotational position, the north pole and south pole of the double-pole permanent magnet M ₂ are magnetic poles P ₃ and P ₄ of the magnetic member B ₂ magnetized to the south pole and the north pole. Will be opposed to Thus, no rotational torque occurs in the double-pole permanent magnet M ₂ , but only a small counterclockwise rotational torque, if any. However, since the north and south poles of the double-pole permanent magnet M ₁ deviate from the opposite relationship to the magnetic poles P ₂ and P ₁ magnetized to the south pole and the north pole, the rotor R rotates counterclockwise by 90 ° or more from the third rotational position. A large rotating torque is produced in the dual stimulus magnet M ₁ which prevents this from happening.

For this reason, the rotor R does not rotate more than 90 degrees counterclockwise from the third rotation.

For this reason, the display element E is switched to and maintained in the second state when power is supplied to the excitation winding L ₁ , ML ₂ through the power supply means J ₁ , MJ ₄ in the state where the display element is in the third state described above. .

As can be seen from the above description, the display surfaces F ₁ , MF ₄ , F ₂ , F ₃ of the display surface member D constituting the display element E are simply directed to the front surface by the selection of the next operation.

(1) The power supply means J of the drive element G is supplied to the excitation winding L ₁ of the stator S of the motor mechanism Q of the display element via the power supply means J ₂ forming the drive device G, immediately before or immediately after it. Power is supplied to the excitation winding L ₂ of stator S of motor mechanism Q via ₄ .

(2) Power is supplied to the excitation winding L ₁ via the power supply means J ₂ , and to the excitation winding L ₂ via the power supply means J ₃ of the drive device G slightly before or after the power supply.

(3) Power is supplied to the excitation winding L ₁ via the power supply means J ₁ , and shortly before the power supply, power is supplied to the excitation winding L ₁ via the power supply means J ₄ .

(4) Power is supplied to the excitation winding L ₁ via the power supply means J ₁ and to the excitation winding L ₂ via the power supply means J ₃ shortly before or after the power supply.

If one of the display surfaces F, MF ₂ , F ₃ , F ₄ of the display surface member D is selected to face the front side, the motor mechanism is not supplied to the excitation winding L ₁ , ML ₂ of the stator S of the motor mechanism Q, even if the power is not supplied. The dual and permanent magnet members M ₁ and MM ₂ of the rotor R of Q are the magnetic poles P ₃ and P ₄ of the magnetic members B ₂ of the stator S of the motor mechanism Q and the magnetic poles P ₁ , MP of the magnetic members B ₁ . _It acts on _two phases. The selected display surface is thus maintained in this position without the need for providing specific means for this. There is also no power consumption for this.

Since the motor mechanism Q for rotating the display surface member D is not built in, a drive device for rotating the display surface member D need not be provided separately from the display element E.

The means for selecting a desired one of the display surfaces F ₁ , MF ₂ , F ₃ , F ₄ of the display surface member D of the display element E is very simple. This is because the power supply means J ₁ , MJ ₂ for the excitation winding L ₁ of the stator S of the motor mechanism Q and the power supply means M ₁ , MM ₂ for the excitation winding L ₂ of the stator S are formed.

The dual-pole permanent magnets M ₁ and MM ₂ of the rotor R of the motor mechanism Q are narrow in the longitudinal direction perpendicular to the axis of the rotational axis 11, respectively, with an angle of 18 ° around the axis of the rotational axis 11. It consists of a rod-like or plate-like member that magnetizes in its free section to the north and south poles. Thus, the effective angle ranges of the north pole and south pole of the double magnetic pole permanent magnet members M ₁ and MM ₂ around the rotating shaft 11 are actually limited in the form of rods or plates. Thus, the display element E can be quickly and smoothly selected from among the display surfaces F ₁ , MF ₂ , F ₃ , and F ₄ , and an error can be effectively prevented in positioning the selected display surface.

The above description may be constituted by a simple example of the display unit using the rotation display element of the present invention, and the present invention is not limited to the specific.

For example, the dual-pole permanent magnet members M ₁ and MM ₂ of the rotor R of the motor mechanism Q are divided into two parts in the axial direction, although not described in detail, to serve as the dual-pole permanent magnet members M ₁ and MM ₂ . It can be formed as if composed of a single pole permanent magnet member. (In this case, the angle X described above is 0 °). With such a device, the effects as already described can be obtained. In a rod-like or plate-like member that forms a double-pole permanent magnet M ₁ , MM ₂ and defines the effective angles of the north and south poles, the cross section is narrow rectangular and the width of the free cross section is less than 45 ° around the axis of the rotation axis 11. Although small, the width may have a width smaller than 45 °. However, they are preferably relatively small within an angle of less than 45 °.

Although the case where rotor R is in the form of a so-called internal rotor has been described, the rotor may also be replaced by a stator, in which case the latter may be replaced by an former. A panel having a large number of display elements assembled in a plurality of display units of the present invention, formed into a matrix, forms a flat or curved surface, and a plurality of display surfaces of many display elements are selectively faced forward, so that letters, symbols, graphic forms, It is possible to display patterns and the like between panels. Thus, for example, the present invention can be applied to something like a billboard or a traffic sign.

Various modifications and changes can be made without departing from the spirit and scope of the invention.

Claims (2)

A rotation display element comprising: a display surface member having a plurality of display surfaces; A permanent magnet motor mechanism; The display surface member is mounted on the rotor of the permanent magnet motor mechanism and embedded in the permanent magnet motor mechanism; A plurality of display surfaces of the display surface member are arranged next to each other around the rotation axis; One of the rotor and the stator of the permanent magnet motor device has a north pole and a south pole, respectively, and has first and second double magnetic pole permanent magnet members disposed adjacent to each other in the axial direction of the rotor; When the first and second pole permanent magnet members have a narrow rectangular cross section in a direction perpendicular to the rotor, the rod-like or plate-shaped members magnetized to the north and south poles in both free sections at an angle of 180 ° from the circumference of the rotor A rod or plate-like member is mounted on the axis of the rotor such that the center of the former in the cross section coincides with the center of the latter; The second double-pole permanent magnet member has a narrow rectangular cross section in a direction perpendicular to the axis of the rotor, and has a rod or plate magnetized in the north and south poles at both free sections having an angle of 180 ° around the axis of the rotor. And a rod or plate member is placed on the axis of the rotor so that the center of the electron in the center cross section coincides with the center of the latter, so that the north pole and south pole of the second double pole permanent magnet member are the first double pole Α (0 ° from the north and south poles of permanent magnet members)

α °

180 °) and at an angle of 180 ° from each other around the axis of the rotor; The other rotors and stators of the permanent magnet motors include the north pole of the first magnetic member and the second double pole permanent magnet member with first and second poles acting on the north pole and the south pole of the first dual pole permanent magnet element. A second magnetic member having third and fourth magnetic poles acting on the south pole, the first excitation winding being wound on a first magnetic member of a type that excites the first and second magnetic poles in opposite polarities; The excitation winding is wound on the second magnetic member to excite the third and fourth magnetic poles with opposite polarities; The first and second magnetic poles of the first magnetic member are arranged around the axis of rotation at an angular distance of 180 °; The third and fourth magnetic poles of the second magnetic member are disposed around the axis of the rotor shaft at an angular distance of ± 90 ° ± α from the first and second magnetic poles of the first magnetic member and at an angular distance of 180 ° from each other. And the first and second magnetic poles of the first magnetic member and the third and fourth magnetic poles of the second magnetic member each extend about an angle of about 90 ° around the axis of the rotor shaft. A display unit comprising: a rotation display element and a drive unit for driving a rotation display element; The rotation display element is provided with a display surface element having a plurality of display surfaces and a permanent magnet motor mechanism; The display surface member is mounted on the rotor of the permanent magnet motor mechanism and embedded in the permanent magnet motor mechanism; A plurality of display surfaces of the display surface member are arranged next to each other around the rotation axis; One of the rotor and the stator of the permanent magnet motor device has a first pole and a second double pole permanent magnet member disposed adjacent to each other in the axial direction of the rotor, each having an north pole and an south pole; The first and second pole permanent magnet members consist of a narrow rectangular multiyear in a direction perpendicular to the rotor, and are rod or plate magnets magnetized to the north and south poles in both free sections at an angle of 180 ° from the circumference of the rotor. And a rod-shaped or plate-shaped member is installed on the axis of the rotor so that the center of the electron in the center section coincides with the center of the latter, so that the north pole and south pole of the second double-pole permanent magnet member are the first double-pole permanent Α (0 ° from the north and south poles of the magnetic element

α °

180 °) and at an angle of 180 ° from each other around the axis of the rotor; The other rotors and stators of the permanent magnet motors include the north pole of the first magnetic member and the second double magnetic pole permanent magnet member with first and second magnetic poles acting on the north pole and the south pole of the first double pole permanent magnet element. A second magnetic member having third and fourth magnetic poles acting on the south pole, the first excitation winding being wound on the first magnetic member in the form of exciting the first and second magnetic poles with opposite polarity; The second excitation winding is wound on the second magnet member to excite the third and fourth magnetic poles in opposite polarities; Arranged around the axis of rotation at an angular distance of 180 degrees of the first and second magnetic poles of the first magnet member; The third and fourth magnetic poles of the second magnet member are disposed around the axis of the rotor shaft at angular distances of ± 90 ° ± α and 180 ° from each other from the first and second poles of the first magnet member and The first and second magnetic poles of the first magnetic member and the third and fourth magnetic poles of the second magnetic member each extend about an angle of about 90 ° around the axis of the rotor axis; The drive unit includes a first power supply means for supplying power to the first excitation winding so that the first and second magnetic poles of the first magnetic member are magnetized to the north pole and the south pole, and to supply power to the first excitation winding. A second power supply means for magnetizing the first and second magnetic poles of the first magnetic member to the south pole and the north pole, and a third power supply means for supplying power to the second excitation winding. The third and fourth magnetic poles of the magnetic member are magnetized to the north and south poles, and are provided with fourth power supply means for supplying power to the second excitation winding, so that the third and fourth magnetic poles of the second magnetic member are the south pole. And a magnetization to the north pole.

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