JP2014187841A - Drive unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drive unit which can perform linear drive with a simple configuration.SOLUTION: A drive unit has: a first magnet 1 which can be rotated by rotating means, is supported so that it does not move in a rotary shaft direction, and has a first opposing surface 1a orthogonal to the axis of rotation; and a second magnet 2 which is reciprocally movable in the direction of rotary shaft, is supported so that it does not rotate, and has a second opposing surface 2a opposite the first opposing surface 1a on the same axis. On the first opposing surface 1a of the first magnet 1 and the second opposing surface 2a of the second magnet 2, at least one or more N poles and S poles divided by a boundary combining two points dividing an outer periphery are formed respectively, N poles and S poles formed on the first opposing surface 1a and the second opposing surface 2a are magnetized in the same shape forms, the first magnet 1 is rotated by the rotating means, and the second magnet is reciprocally moved in the direction of the rotary shaft by an attractive force and a repulsive force of the magnetic force.

Description

  The present invention relates to a vibration generating device, and more particularly to a driving device for a vibration generating device for transmitting an operation feeling of a touch panel to a finger or a hand.

  Conventionally, vibration has occurred in a wide range of products, such as notifying the user of incoming calls from mobile phones by vibration, or giving an operation feeling such as a click feeling due to vibration to an operator who performs input operations by touching the touch panel The device is in use.

  In recent years, with the widespread use of tablet terminals, navigation devices, and the like that have a display device larger than that of conventional portable devices, a drive device that can be used for a vibration generator that can handle large display devices is desired. Yes.

  Patent Document 1 (conventional example) proposes a vibration generator (vibration generator). FIG. 11 is a cross-sectional view of a conventional vibration generator 900. The vibration generator 900 is provided with fixed permanent magnets 903 and 904 at both ends of a cylindrical casing 901, and a movable permanent magnet 905 is housed in an inner space 902 of the casing 901, while the outer periphery of the casing 901 is A drive coil 906 that is energized by a pulse power source 907 and generates magnetism is provided. A driving force is applied to the movable permanent magnet 905 due to the change in the magnetic force generated by the drive coil 906 and the magnetic fluxes of the fixed permanent magnets 903 and 904 and the movable permanent magnet 905, and the movable permanent magnet 905 is reciprocated in the inner space 902. Thus, a technique for generating vibration is disclosed.

Japanese Patent Laid-Open No. 11-168869

  However, the above-described vibration generator has a problem that the configuration is complicated because a coil, a pulse power source, and the like are required in addition to using three permanent magnets.

  The present invention solves the above-described problems, and an object of the present invention is to provide a drive device that can perform linear drive with a simple configuration.

  In order to solve this problem, the drive device of the present invention is a first magnet that can be rotated by rotating means, is supported so as not to move in the direction of the rotation axis, and has a first facing surface orthogonal to the rotation axis. And a second magnet having a second opposing surface that is reciprocally movable in the direction of the rotational axis, is supported so as not to rotate, and opposes the first opposing surface on the same axis, The first facing surface of the first magnet and the second facing surface of the second magnet each have at least an N pole and an S pole divided by a boundary line connecting two points dividing the outer periphery. One or more are formed, and the N poles and S poles formed on the first facing surface and the second facing surface are magnetized in the same shape, and are rotated by the rotating means. The first magnet is rotated, and the second magnet is moved by the magnetic attractive force and repulsive force. It reciprocates in the direction of the serial rotation axis.

  According to this, the 1st opposing surface of a 1st magnet and the 2nd opposing surface of a 2nd magnet respectively have the north-pole and the south pole divided | segmented by the boundary line which ties between two points which divide | segment an outer periphery. At least one or more magnetized in the same shape, the first magnet can be rotated by the rotating means and supported so as not to move in the direction of the rotation axis, and the second magnet can be reciprocated in the direction of the rotation axis It was configured to be supported so as not to rotate. Therefore, by rotating the first magnet by the rotating means, the attractive force and the repulsive force are switched so that the magnetic poles of the first opposing surface and the second opposing surface are the same magnetic poles or different magnetic poles. Can do. For this reason, when an attractive force works between the first magnet and the second magnet, the second magnet moves in a direction approaching the first magnet, and when a repulsive force works, the second magnet It can be operated to move away from the first magnet. Therefore, it is possible to provide a driving device that can perform linear driving with a simple configuration.

  In the driving device of the present invention, the magnetized region of one magnetic pole of the N pole or the S pole is larger than the magnetized region of the other magnetic pole on the first facing surface and the second facing surface. It is characterized by that.

  According to this, since the magnetized region of one magnetic pole of the N pole or the S pole is larger than the magnetized region of the other magnetic pole on the first facing surface and the second facing surface, the same magnetic poles face each other. In this case, since the repulsive force works on almost the entire surface facing each other, a stronger repulsive force can be obtained. In addition, at a position where different magnetic poles face each other, a region where the same magnetic poles overlap with each other remains wider, so that the attractive force can be weakened. For this reason, compared with the case where different magnetic poles are magnetized in the same area, the first magnet can be rotated with a small force, so that switching to attractive force or repulsive force can be made faster, A fast drive device can be realized.

  In the driving device of the present invention, each of the first and second opposing surfaces is divided by a boundary line connecting two points dividing the outer periphery of the second opposing surface. It is characterized by being.

  According to this, since the number of boundary lines between different magnetic poles can be minimized and the area of the magnetized region is not reduced, a drive device that can be driven with a large repulsive force can be realized.

  In the driving device of the present invention, the boundary line is linear.

  According to this, since the boundary line is a straight line, the magnetic poles can be divided at the shortest distance, and the length of the boundary line not magnetized can be minimized. For this reason, the reduction in the area of the magnetized region can be minimized, and the magnetized region can be ensured accordingly. Accordingly, it is possible to minimize a decrease in driving force (repulsive force) due to the boundary line of the magnetic poles generated by the multipole magnetization.

  In the driving device according to the present invention, the first magnet and the second magnet are provided with yokes on the first facing surface and a portion excluding the second facing surface. And

  According to this, since the yoke is disposed in a portion excluding the facing surface, the leakage magnetic flux from the portion where the yoke is disposed is reduced, and the magnetic field lines are concentrated on the facing surface. Therefore, since the magnetic force acting between the two magnets can be increased, a driving device having a large driving force can be realized.

  According to the driving apparatus of the present invention, it is possible to provide a driving apparatus that can perform linear driving with a simple configuration.

It is a figure which shows the example of the touchscreen provided with the vibration generator using the drive device which concerns on embodiment of this invention. It is an external appearance perspective view of the vibration generator using the drive device concerning the embodiment of the present invention. It is a disassembled perspective view of the vibration generator using the drive device which concerns on embodiment of this invention. It is an appearance perspective view of a drive unit concerning an embodiment of the present invention. It is a disassembled perspective view of the drive device which concerns on embodiment of this invention. It is explanatory drawing of the 1st opposing surface of a 1st magnet, and the 2nd opposing surface of a 2nd magnet. It is a schematic diagram explaining the structure of a drive device and a vibration generator. It is a cross-sectional schematic diagram explaining operation | movement of a drive device and a vibration generator. It is a figure which shows the simulation result of the force which acts on the rotation angle of the 1st magnet which concerns on this embodiment, and the 2nd magnet. It is explanatory drawing of the modification of the opposing surface of the 1st magnet which concerns on this embodiment, and the opposing surface of a 2nd magnet. It is a figure explaining the vibration generator of a prior art.

[First Embodiment]
Below, the drive device 10 in 1st Embodiment is demonstrated.

  First, an example of the touch panel 200 including the vibration generator 100 using the driving device 10 according to the present embodiment will be briefly described with reference to FIG.

  FIG. 1 is a diagram illustrating an example of a touch panel including a vibration generating device using a driving device according to an embodiment of the present invention. The touch panel 200 includes an input operation unit 201 having a contact input function on a display surface, a frame 202 that holds the input operation unit 201, and the vibration generator 100. The side surface on the Y1 side of the frame 202 is fixed so that the vibration surface 30a of the housing 30 constituting the vibration generating device 100 is in contact with it. When the vibration generating apparatus 100 is operated, the vibration is transmitted to the input operation unit 201 by applying vibration to the frame 202, and an operator who performs contact input to the touch panel 200 can be given an operation feeling by vibration. .

  Next, the configuration of the vibration generating device 100 using the driving device 10 according to the present embodiment will be described with reference to FIGS. FIG. 2 is a perspective view showing an appearance of the vibration generator 100 using the driving device 10. FIG. 3 is an exploded perspective view showing a configuration of the vibration generator 100 using the driving device 10.

  As shown in FIGS. 2 and 3, the vibration generating device 100 includes a driving device 10, a rotating unit 20, and a housing 30. Further, as shown in FIG. 2, the vibration generator 100 includes a housing 30 in which a driving device 10 and a rotating unit 20 are fixed and supported.

  Next, the configuration of the driving device 10 will be described with reference to FIGS. 4A and 4B are perspective views showing the external appearance of the drive device 10. FIG. 4A is a perspective view of the X1-Y1 direction from the X2-Y2 direction, and FIG. 4B is a X2-Y1 direction from the X1-Y1 direction. It is the perspective view which looked at the Y2 direction. FIG. 5 is an exploded perspective view showing the configuration of the driving device 10. FIG. 6 is a diagram for explaining the magnetized state of the first facing surface 1a of the first magnet 1 and the second facing surface 2a of the second magnet 2 and the positions of the magnetic poles in the facing state. FIG. 6A is a schematic diagram for explaining the magnetized state of the first facing surface 1a, and FIG. 6B is a diagram for explaining the magnetized state of the second facing surface 2a. FIG. 6C is a diagram illustrating the position of the magnetic pole of the first facing surface 1a when the driving device 10 is in the initial state, and FIG. 6D is a case where the first magnet 1 is rotated. It is a figure explaining the position of the magnetic pole.

  As shown in FIGS. 4 and 5, the driving device 10 includes a first magnet 1, a second magnet 2, a first yoke 3, a second yoke 4, and a rotating member inside the housing 5. 6 and a slide member 7 are accommodated.

  The first magnet 1 is cylindrical and has a first facing surface 1a on one bottom surface. As shown in FIG. 6A, the first facing surface 1a has one N-pole and one S-pole, and a linear boundary line connecting two points dividing the outer periphery of the first facing surface 1a. Divided by D, the two poles are magnetized so that the S pole side is widened.

  The second magnet 2 is cylindrical and has a second facing surface 2a on one bottom surface. As shown in FIG. 6B, the second facing surface 2 a has the same shape as the first facing surface 1 a of the first magnet 1, and each has a north pole and a south pole. It is divided by a linear boundary line D connecting two points that divide the outer periphery of the surface 2a, and is polarized so that the S pole side becomes wider.

  The range of magnetization of the first facing surface 1a and the second facing surface 2a is such that the first facing surface 1a and the second facing surface 2a face each other so that different magnetic poles overlap each other. It is set in a range where an attractive force acts between the magnet 1 and the second magnet 2.

  The first yoke 3 is formed using a soft magnetic material such as iron, has a disk shape as shown in FIG. 5, and is the other of the first magnets 1 on the back side of the first facing surface 1a. It is arranged on the bottom side.

  The second yoke 4 is formed using a soft magnetic material such as iron, and has a disk shape as shown in FIG. 5, and the other of the second magnets 2 on the back side of the second facing surface 2a. It is arranged on the bottom side.

  The rotating member 6 is formed in a cylindrical shape using a non-magnetic material such as synthetic resin, and as shown in FIG. 5, one bottom surface side (Y2 side shown in FIG. 5) of the cylindrical shape is opened. It has the formed 1st holding | maintenance part 6a. Further, a gear portion 6b that meshes with the second relay gear 32 to which the rotational force from the rotation means 20 is transmitted when part of the outer periphery of the rotation member 6 is assembled in the housing 30 of the vibration generating device 100. Is provided.

  The slide member 7 is formed in a cylindrical shape using a non-magnetic material such as a synthetic resin, and as shown in FIG. 5, one cylindrical bottom surface side (Y1 side shown in FIG. 5) is opened. It has the formed 2nd holding | maintenance part 7a. Further, the outer periphery of the slide member 7 is restricted so that the slide member 7 does not rotate inside the housing 5 when the slide member 7 is assembled into the housing 5, and the slide member 7 extends along the direction of the rotation axis C of the first magnet 1. A restricting portion 7b for guiding the movement of the reciprocating movement 7 is provided. The slide member 7 is provided with a vibration portion 7c on the outer surface opposite to the opened one bottom surface.

  The housing 5 is formed in a hollow shape using a nonmagnetic material such as a synthetic resin, and has a rotation support portion 5a and a reciprocating support portion 5b as shown in FIG. The housing 5 is provided with a gear opening 5c through which the gear portion 6b of the rotating member 6 is exposed and a slide support portion 5d through which the restricting portion 7b of the slide member 7 is guided.

  Next, the structure of the rotation means 20 and the housing | casing 30 is demonstrated using FIGS. 1-3.

  As shown in FIG. 2, the rotating means 20 includes a motor 21 and a drive gear 22 fitted and fixed to a shaft (not shown) of the motor 21, for supplying electric power to the motor 21. A power supply terminal (not shown) is provided.

  The housing 30 is made of an insulating material such as synthetic resin, and has a vibration surface 30a, a driving device fixing portion 30b, and a motor fixing portion 30c as shown in FIG. In addition, the housing 30 is rotatably supported and fixed in a state where the first relay gear 31 and the second relay gear 32 are engaged with each other.

  The vibration surface 30a of the housing 30 is disposed so as to be in contact with a vibration target such as the frame 202 shown in the example of the touch panel 200 shown in FIG. The vibration surface 30a is provided with a second opening 30e through which the vibration portion 7c of the slide member 7 can be inserted, and the rotating member 6 of the driving device 10 is rotatably inserted into the opposite side surface. A first opening 30d is provided. In addition, when the motor 21 is assembled, the vibration generating device 100 is connected to a contact portion (not shown) for contacting the power supply terminal of the motor 21 and supplying electric power to the motor 21 and connected to the contact portion from the outside. Is provided with a power supply terminal (not shown) for supplying power.

  Next, the structure of the vibration generator 100 using the drive device 10 in this embodiment will be described with reference to FIGS.

  First, the structure of the driving device 10 will be described with reference to FIGS. 4 and 5.

  As shown in FIG. 5, the first magnet 1 and the first yoke 3 are connected to the first holding portion 6a of the rotating member 6 so that the first magnet 1 does not rotate in the first holding portion 6a. Fixed. The first facing surface 1a of the first magnet 1 is held toward the Y2 side shown in FIG. 5 so that the rotation axis C of the rotating member 6 is orthogonal and passes through the center of the first facing surface 1a. . The first magnet 1 and the first yoke 3 rotate integrally with the rotating member 6 when the rotating member 6 rotates about the rotation axis C inside the housing 5.

  The rotation member 6 is rotatably supported by the rotation support portion 5 a of the housing 5 and is restricted from moving in the direction of the rotation axis C inside the housing 5.

  As shown in FIG. 5, the second magnet 2 and the second yoke 4 are connected to the second holding portion 7a of the slide member 7 so that the second magnet 2 does not rotate in the second holding portion 7a. Fixed. The second facing surface 2a of the second magnet 2 is held toward the Y1 side shown in FIG. 5 so that the rotation axis C of the rotating member 6 is orthogonal and passes through the center of the second facing surface 2a. . Accordingly, the vibration portion 7 c provided on the slide member 7 is located on the opposite side of the second facing surface 2 a of the second magnet 2, and the first facing surface 1 a of the first magnet 1 and the second magnet 1. The second opposing surface 2a is held by the housing 5 so as to face each other. The second magnet 2 and the second yoke 4 are integrated with the slide member 7 when the slide member 7 moves along the direction of the rotation axis C of the first magnet 1 inside the housing 5. Move with.

  The slide member 7 is supported by the reciprocating support portion 5 b of the housing 5 so as to be reciprocally movable along the direction of the rotation axis C of the first magnet 1, and the restricting portion 7 b is sandwiched between the slide support portions 5 d of the housing 5. Thus, it is restricted from rotating inside the housing 5. Further, when the slide member 7 moves along the direction of the rotation axis C of the first magnet 1 inside the housing 5, the slide member 7 is farthest from the near end closest to the first magnet 1 by the slide support portion 5 d. The range that can be reciprocated so as to move up to the far end that is the position is restricted. In addition, even if the slide member 7 is located at the closest end closest to the first magnet 1, the slide support portion 5d is arranged so that the first magnet 1 and the second magnet 2 are not in direct contact with each other. Is set.

  In a state where the rotating member 6 and the slide member 7 are housed in the housing 5, the first facing surface 1 a of the first magnet 1 and the second facing surface 2 a of the second magnet 2 are on the same axis. Opposite.

  The vibration portion 7c provided in the slide member 7 moves in a direction away from the rotating member 6 side and reaches the far end in a state where the slide member 7 is incorporated in the housing 5 and the housing 5 is incorporated in the housing 30. In this position, the tip is formed so as to protrude from the vibration surface 30 a of the housing 30. Further, when it is located at the near end, it is in a state of being stored inside the housing 5. In addition, by appropriately selecting the elastic coefficient of the synthetic resin material forming the slide member 7, when the vibration unit 7c collides with the vibration target as illustrated in the frame 202 shown in FIG. The generated sound can be reduced.

  Next, a state in which the driving device 10 and the rotating unit 20 are attached to the housing 30 will be described with reference to FIGS. 2 and 7. FIG. 7 is a schematic diagram illustrating the structures of the driving device 10 and the vibration generating device 100. FIG. 7A is a top view of the vibration generator 100 shown in FIG. 1 as viewed from the Z1 side with the upper surface side of the housing 5 of the drive device 10 omitted, and FIG. It is the side view which looked at from the vibration surface 30a side.

  When the driving device 10 is fixed to the driving device fixing portion 30b provided in the housing 30, the gear of the rotating member 6 exposed from the gear opening 5c of the housing 5 as shown in FIG. As shown in FIG. 7A, the portion 6b is in a state of being engaged with the second relay gear 32.

  When the motor 21 of the rotating means 20 is fixed to the motor fixing portion 30c provided in the housing 30, the drive gear 22 of the rotating means 20 is the first as shown in FIGS. The relay gear 31 is engaged. When the rotation means 20 operates in this state and the drive gear 22 rotates, the first relay gear 31 rotates, and the second relay gear 32 rotates by the rotation of the first relay gear 31, and the rotation member 6 of the drive device 10 is rotated. The provided gear part 6b is rotated. In this way, the rotating member 6 of the driving device 10 can be rotated by the rotating means.

  Next, operation | movement of the vibration generator 100 using the drive device 10 in this embodiment is demonstrated using FIG.6 and FIG.8. FIG. 8 is a schematic diagram showing an AA cross section of the vibration generator 100 shown in FIG.

  In the initial state before the operation, as shown in FIG. 8A, the slide member 7 is autonomously stopped at the positional relationship where the suction force is maximized while being pulled toward the rotating member 6 inside the housing 5. Yes. In this state, the first facing surface 1a of the first magnet 1 is in the position shown in FIG. 6C, and the second facing surface 2a of the second magnet 2 is in the state shown in FIG. 6B. Facing each other. Therefore, different magnetic poles face each other between the first facing surface 1a and the second facing surface 2a on the Z1 side and the Z2 side shown in FIGS. Power is working. In the vicinity of the center in the Z1-Z2 direction, the repulsive force works because the same S poles are facing each other. And the second magnet 2 is in an attracted state.

  Next, when electric power is supplied to the vibration generating device 100 and the motor 21 of the rotating means 20 is operated, the shaft of the motor 21 rotates and the drive gear 22 fixed to the shaft rotates. The first relay gear 31 is rotated by the rotation of the drive gear 22, and the second relay gear 32 is rotated by the rotation of the first relay gear 31. As the second relay gear 32 rotates, the rotational force is transmitted to the gear portion 6b of the rotating member 6 of the driving device 10, and the rotating member 6 rotates together with the first magnet 1 and the first yoke 3 incorporated therein. To do.

  When the rotating member 6 rotates half a circle, the first facing surface 1a of the first magnet 1 is in the position shown in FIG. 6 (d), and the second facing surface 2a of the second magnet 2 is in FIG. 6 (b). In the state shown, they will face each other. Therefore, since the same magnetic poles face each other, the repulsive force acts on substantially the entire opposing surfaces of the two magnets. Since the rotation member 6 is restricted by the rotation support portion 5a of the housing 5 from moving in the direction of the rotation axis C inside the housing 5, a strong repulsive force is exerted on the second magnet 2 housed in the slide member 7. Work. With this repulsive force, the slide member 7 is driven strongly away from the first magnet 1, and the vibration portion 7c of the slide member 7 protrudes vigorously from the second opening 30e provided in the housing 30, FIG. The state shown in b) is obtained.

  When the rotating member 6 further rotates half a circle, the first facing surface 1a of the first magnet 1 returns to the state shown in FIG. 6C, and the second facing surface 2a of the second magnet 2 is turned into FIG. It will face in the state shown in (b). Therefore, an attractive force is applied between the first magnet 1 and the second magnet 2, and the slide member 7 is autonomously drawn again to the initial position shown in FIG.

  As described above, the first magnet 1 is rotated by rotating the rotating member 6 of the driving device 10 by the rotating means 20, and the first facing surface 1 a of the first magnet 1 and the second magnet 2 are rotated. The magnetic force acting between the second facing surface 2a can be switched to an attractive force or a repulsive force. For this reason, the second magnet 2 moves in the direction approaching the first magnet 1 when the attractive force works, and the second magnet 2 moves in the direction away from the first magnet 1 when the repulsive force works. Can be operated. In this way, the second magnet 2 can be reciprocated in the direction of the rotation axis C by the magnetic attractive force and the repulsive force.

  In addition, it is preferable that the areas of the N pole and the S pole magnetized on the first facing surface 1a and the second facing surface 2a are formed to be about 1: 2. FIG. 9 shows a simulation result of the force acting on the second magnet 2 when the first magnet 1 is rotated 360 degrees at intervals of 30 degrees when formed at a ratio of 1: 2. As shown in FIG. 9, when magnetized at a ratio of 1: 2, the ratio between the maximum value of the attractive force and the maximum value of the repulsive force is about 1: 3. It is getting smaller. For this reason, since the first magnet can be rotated with a small force, the switching between the attractive force and the repulsive force can be accelerated.

  By continuously rotating the rotating member 6, the slide member 7 can be continuously reciprocated along the direction of the rotation axis C of the rotating member 6. Therefore, the vibration target can be vibrated by arranging the vibration target in the movable range of the vibration unit 7 c provided on the slide member 7.

  Below, the effect by having set it as this embodiment is demonstrated.

  The first facing surface 1a of the first magnet 1 and the second facing surface 2a of the second magnet 2 each have an N pole and an S pole divided by a boundary line D connecting two points dividing the outer periphery. At least one or more is magnetized in the same shape, the first magnet is supported by the rotating means so as not to move in the direction of the rotation axis C, and the second magnet reciprocates in the direction of the rotation axis C. It was configured to be movable and supported so as not to rotate. Therefore, by rotating the first magnet by the rotating means, the attractive force and the repulsive force are switched so that the magnetic poles of the first opposing surface and the second opposing surface are the same magnetic poles or different magnetic poles. Can do. For this reason, when an attractive force works between the first magnet and the second magnet, the second magnet moves in a direction approaching the first magnet, and when a repulsive force works, the second magnet It can be operated to move away from the first magnet. Therefore, it is possible to provide a driving device that can perform linear driving with a simple configuration.

  Since the magnetized region of one magnetic pole (S pole) of the first opposing surface 1a and the second opposing surface 2a is larger than the magnetized region of the other magnetic pole, when the same magnetic poles face each other, Since repulsive force works on the entire surface, strong repulsive force can be maintained. Further, at a position where different magnetic poles face each other, a region where the same magnetic poles overlap with each other remains wider, so that the attractive force can be weakened. For this reason, since the first magnet can be rotated with a small force, the switching to the attractive force or the repulsive force can be made faster, and a drive device that rises quickly can be realized.

  Further, one each of the N pole and the S pole divided by the boundary line D connecting the two points dividing the outer periphery of the first facing surface 1a and the second facing surface 2a is set to one. For this reason, since the number of boundary lines D between different magnetic poles can be minimized and the area of the magnetized region can be maintained, a driving device that can be driven with a large repulsive force can be realized.

  Further, the boundary line D between the different magnetic poles was linear. Therefore, the magnetic poles can be divided at the shortest distance, and the length of the boundary line D that is not magnetized can be minimized. For this reason, the reduction in the area of the magnetized region can be minimized, and the magnetized region can be ensured accordingly. Accordingly, it is possible to minimize a decrease in driving force (repulsive force) caused by the boundary line D of the magnetic poles caused by the multipole magnetization.

  Moreover, the 1st magnet 1 and the 2nd magnet 2 have arrange | positioned the yoke on the opposite side to the 1st opposing surface 1a and the 2nd opposing surface 2a. For this reason, the leakage magnetic flux from the portion where the yoke is disposed is reduced, and the magnetic lines of force are concentrated on the opposing surfaces. Therefore, since the magnetic force acting between the two magnets can be increased, a driving device having a large driving force can be realized.

  As described above, according to the driving apparatus 10 of the present embodiment, it is possible to provide a driving apparatus that can perform linear driving with a simple configuration.

  As described above, the drive device 10 according to the embodiment of the present invention has been specifically described. However, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. It is possible. For example, the present invention can be modified as follows, and these embodiments also belong to the technical scope of the present invention.

  (1) In the present embodiment, the first magnet 1 is housed in the rotating member 6, and the example in which the rotating member 6 is rotated has been described. However, a gear portion that transmits the rotational force to the first magnet is formed. However, a configuration in which the rotating member 6 is not used may be employed.

  (2) In the present embodiment, the second magnet 2 is housed in the slide member 7, and the example in which the vibration portion 7 c is formed on the slide member 7 has been described. However, the second magnet 2 is rotated. It is good also as a structure which forms the control part and vibration part to control, and does not use the slide member 7. FIG. Further, the excitation unit may be formed on the second yoke. If the vibration part is formed in the second yoke, it is not necessary to change the shape of the second magnet 2 and it is not necessary to provide another member, so that a drive device with a simpler structure can be realized.

  (3) In this embodiment, the 1st opposing surface 1a of the 1st magnet 1 and the 2nd opposing surface 2a of the 2nd magnet 2 demonstrate and show the example where the area | region magnetized by a south pole is wide. However, it may be magnetized in the same area, and may be implemented by changing the N pole side to be wide.

  (4) In the present embodiment, the first opposing surface 1a of the first magnet 1 and the second opposing surface 2a of the second magnet 2 have been described with an example in which they are two-pole magnetized. However, it may be carried out by magnetizing three or more poles. FIG. 10 shows an example in which multipolar magnetization is performed. FIG. 10A is an example in which three poles are magnetized. FIGS. 10B and 10C are examples in which four poles are magnetized. FIG. For example, when magnetized as shown in FIG. 10B, the attractive force and the repulsive force can be switched each time the first magnet rotates approximately 90 degrees, so the first magnet is rotated at the same speed. In this case, the second magnet can be driven at an earlier cycle. Therefore, when applied to a vibration generator, it is possible to generate vibrations with a faster period.

  (5) In the present embodiment, the first opposing surface 1a of the first magnet 1 and the second opposing surface 2a of the second magnet 2 have been described with an example of being circular. It may be a donut shape or a polygonal shape with holes. Since the attractive force and the repulsive force are obtained by the rotation of the first magnet, the shape to be rotated is more suitable, but if the attractive force and the repulsive force are obtained by the magnetized state, the shape is deformed and implemented. Also good.

  (6) In the present embodiment, the first yoke 3 and the second yoke 4 have been described with an example in which the first yoke 3 and the second yoke 4 are formed in a disk shape. It is good also as a cylindrical shape with one side closed so that only the surface 2a is exposed. When the yoke having such a shape is used, leakage of magnetic force from places other than the first facing surface and the second facing surface 2a is reduced, and the magnetic force is concentrated on the first facing surface 1a and the second facing surface 2a. can do. For this reason, since a stronger magnetic force can be obtained than in the case of a magnet having the same magnetic force, a driving device having a larger driving force can be obtained. In addition, when trying to obtain the same driving force, a magnet having a smaller magnetic force can be used, so that a magnet having a small outer shape or the like can be used. Therefore, the driving device and the vibration using the driving device can be used. The generator can be reduced in size.

  (7) In the present embodiment, by appropriately selecting the elastic coefficient of the synthetic resin material forming the slide member 7, the sound generated when the vibration unit 7c collides with the vibration target and gives vibration is reduced. Although an example has been described, an elastic sheet may be interposed between the excitation unit and the vibration target. In that case, the elastic sheet may be disposed only in the vibrating portion, or may be disposed over the entire surface between the vibration generator and the vibration target.

DESCRIPTION OF SYMBOLS 1 1st magnet 1a 1st opposing surface 2 2nd magnet 2a 2nd opposing surface 3 1st yoke 4 2nd yoke 5 Housing 5a Rotation support part 5b Reciprocating support part 5c Gear opening part 5d Slide support part 6 Rotating member 6a First holding portion 6b Gear portion 7 Slide member 7a Second holding portion 7b Restricting portion 7c Exciting portion 10 Driving device 20 Rotating means 21 Motor 22 Driving gear 30 Housing 30a Exciting surface 30b Driving device fixing portion 30c Motor fixing portion 30d First opening portion 30e Second opening portion 31 First relay gear 32 Second relay gear 100 Vibration generating device 200 Touch panel

Claims (5)

A first magnet that can be rotated by a rotating means, is supported not to move in the direction of the rotation axis, and has a first facing surface orthogonal to the rotation axis;
A second magnet having a second opposing surface that is reciprocally movable in the direction of the rotational axis, is supported so as not to rotate, and opposes the first opposing surface on the same axis;
The first and second opposing surfaces of the first magnet and the second opposing surface of the second magnet each have an N pole and an S pole divided by a boundary line connecting two points dividing the outer periphery. Are formed at least one or more, and the N poles and S poles formed on the first facing surface and the second facing surface are magnetized in the same shape,
The driving device according to claim 1, wherein the first magnet is rotated by the rotating means, and the second magnet is reciprocated in the direction of the rotating shaft by a magnetic attractive force and a repulsive force.   2. The magnetized region of one magnetic pole of the N pole or the S pole is larger than the magnetized region of the other magnetic pole in the first opposing surface and the second opposing surface. The drive device described in 1.   2. The N-pole and the S-pole each divided by a boundary line connecting two points dividing the outer circumference of the first opposing surface and the second opposing surface are each one. Or the drive device in any one of Claim 2.   The drive device according to any one of claims 1 to 3, wherein the boundary line is linear. 5. The yoke according to claim 1, wherein a yoke is disposed on the first magnet and the second magnet except for the first facing surface and the second facing surface. The drive apparatus in any one.

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