JP2019130462A - Vibration device, vibratory equipment, and method for control of vibration device - Google Patents

Abstract

To provide a vibration device which further improves vibration effect at an end part in a longer direction.SOLUTION: A vibration device of vibratory equipment comprises a tabular base body, and plural vibration motors 12 which are provided on a loading surface having a longer direction of the base body. The plural vibration motors includes a first vibration motor 121 which is located on a longer direction one side with respect to a longer direction center of the loading surface, and a second vibration motor 122 located on the longer direction other side with respect to the longer direction center of the loading surface. The first vibration motor and the second vibration motor respectively generates vibrations having vibrational components in a same vibration direction which is perpendicular to a normal direction of the loading surface of the vibration motor in the base body.SELECTED DRAWING: Figure 6A

Description

  The present invention relates to a vibration device, a vibration device, and a control method of the vibration device.

  In recent years, portable devices such as smartphones are being distributed with functions for transmitting vibrations to the fingertips of users who hold devices and realizing virtual tactile effects, effects effects by vibration according to application operations, and the like. For example, Patent Document 1 discloses a smartphone that realizes a haptic function by vibration of piezoelectric vibration elements joined to inner side surfaces on both sides in the longitudinal direction of a glass plate.

Japanese Patent Laying-Open No. 2015-018425

  However, in a device using a piezoelectric vibration element as in Patent Document 1, there is a possibility that sufficient vibration for obtaining a desired vibration effect cannot be obtained.

  An object of this invention is to improve the vibration effect in the edge part in a longitudinal direction more.

  An exemplary vibration device of the present invention includes a plate-like base and a plurality of vibration motors provided on a mounting surface having a longitudinal direction of the base. The plurality of vibration motors are arranged on the other side in the longitudinal direction than the center in the longitudinal direction of the mounting surface and the first vibration motor disposed on the one side in the longitudinal direction from the longitudinal center of the mounting surface. 2 vibration motors. Each of the first vibration motor and the second vibration motor generates a vibration having at least a vibration component in the same vibration direction perpendicular to the normal direction of the mounting surface of the vibration motor in the base.

  An exemplary vibration apparatus according to the present invention includes the above-described vibration device having a plurality of vibration motors including the first vibration motor and the second vibration motor, and any of the plurality of vibration motors in a plurality of vibration modes. And a drive unit that vibrates. The vibration mode includes a first vibration mode in which one of the first vibration motor and the second vibration motor is vibrated, and the first vibration motor and the second vibration motor are mounted on the base. A second vibration mode for generating a vibration having a first vibration component in the same vibration direction and in the same phase that is perpendicular to the normal direction of the placement surface; and the first vibration motor and the second vibration motor described above. And a third vibration mode for generating a vibration having a second vibration component in the same vibration direction and opposite in phase that is perpendicular to the normal direction.

  In the exemplary vibration device control method of the present invention, the first vibration motor is disposed on one side of the longitudinal direction from the longitudinal center on the mounting surface having the longitudinal direction of the plate-like base, and from the longitudinal center. Is also a control method of the vibration device in which the second vibration motor is arranged on the other side in the longitudinal direction. The control method of the vibration device includes a step in which the first vibration motor and the second vibration motor vibrate in any one of a plurality of vibration modes. The vibration mode includes a first vibration mode in which one of the first vibration motor and the second vibration motor vibrates, and the first vibration motor and the second vibration motor are mounted on the base on the vibration motor. A second vibration mode for generating a vibration having a first vibration component in the same vibration direction and in the same phase that is perpendicular to the normal direction of the placement surface; and the first vibration motor and the second vibration motor described above. And a third vibration mode for generating a vibration having a second vibration component in the same vibration direction and opposite in phase that is perpendicular to the normal direction.

  According to the exemplary vibration device, vibration device, and vibration device control method of the present invention, the vibration effect at the end in the longitudinal direction can be further enhanced.

FIG. 1 is an exploded perspective view of a smartphone. FIG. 2 is a block diagram illustrating a configuration example of a smartphone. FIG. 3A is a conceptual diagram showing vibration of the vibration motor in the first one-piece vibration mode. FIG. 3B is a conceptual diagram showing vibration of the vibration motor in the second one-side vibration mode. FIG. 3C is a conceptual diagram showing vibration of the vibration motor in the in-phase vibration mode. FIG. 3D is a conceptual diagram showing vibration of the vibration motor in the antiphase vibration mode. FIG. 4 is a flowchart for explaining a control method of the driving device. FIG. 5 is a perspective view showing a schematic configuration of the vibration measurement system. FIG. 6A is a bottom view of the vibrating body according to the first measurement example. FIG. 6B is a table showing the results of the first measurement example. FIG. 7A is a bottom view of the vibrating body according to the second measurement example. FIG. 7B is a table showing the results of the second measurement example. FIG. 8A is a bottom view of the vibrating body according to the third measurement example. FIG. 8B is a table showing the results of the third measurement example. FIG. 9A is a bottom view of the vibrating body according to the fourth measurement example. FIG. 9B is a table showing the results of the fourth measurement example.

  Hereinafter, exemplary embodiments of the present invention will be described with reference to the drawings.

  In the present specification, in the smartphone 100, a direction from the display unit 102 to be described later to the transparent plate member 104 to be described later is referred to as “upward”, and a direction from the transparent plate member 104 to the display unit 102 is referred to as “downward”. . In each component, an upper end portion is referred to as an “upper end portion”, and a lower end portion is referred to as a “lower end portion”. Further, on the surface of each component, the surface facing upward is referred to as “upper surface”, and the surface facing downward is referred to as “lower surface”.

  Note that the names such as the direction, the end, and the surface described above do not indicate the positional relationship and the direction when incorporated in an actual device.

<1. Embodiment>
<1-1. Smartphone>
FIG. 1 is an exploded perspective view of the smartphone 100. FIG. 2 is a block diagram illustrating a configuration example of the smartphone 100.

  As illustrated in FIGS. 1 and 2, the smartphone 100 includes a housing 101, a display unit 102, a touch panel 103, and a transparent plate member 104. The casing 101 has a box shape with a planar shape having a longitudinal direction DL, and accommodates the display unit 102 and the touch panel 103 therein. One side of the casing 101 in the thickness direction is open and is covered and closed with a transparent plate member 104 made of a glass plate, a transparent resin plate, or the like. The display unit 102 displays a video based on the video signal and the display control signal. The touch panel 103 is provided on the display unit 102. The configuration of the touch panel 103 will be described later.

  The smartphone 100 further includes a memory 111, a CPU 112, a drive unit 113, a display control unit 114, an audio output unit 115, a power supply unit 116, and a communication I / F 117. The memory 111 is a non-transitory storage medium that maintains storage even when power supply is stopped. The memory 111 stores, for example, programs and information used by the CPU 112. CPU112 controls each component of the smart phone 100 using the program, information, etc. which the memory 111 memorize | stores. The driving unit 113 controls driving of the vibration motor 12. The drive control of the vibration motor 12 will be described later. The display control unit 114 controls the display of the display unit 102 by, for example, outputting a display control signal. The audio output unit 115 is a speaker that outputs audio based on an audio signal. The power supply unit 116 is a storage battery such as a lithium battery, for example, and supplies power to each component of the smartphone 100. The communication I / F 117 is a communication unit that can communicate with an external device or a communication network such as the Internet.

<1-1-1. Touch panel>
Next, the touch panel 103 will be described. The touch panel 103 is an input unit that receives an operation input corresponding to contact of an object such as a user's finger or a tip of a touch pen. In the present embodiment, the touch panel 103 includes the vibration device 1 that can vibrate in various vibration modes described later. Yes. With this configuration, the vibration of the vibration device 1 can be transmitted to the user who performs the operation input. For example, by causing the first vibration motor 121 and the second vibration motor 122 to vibrate with a vibration pattern corresponding to the operation input, the user can feel the vibration corresponding to the operation input.

  The touch panel 103 includes a touch sensor unit 10, a base 11, and a plurality of vibration motors 12. The touch sensor unit 10 is a capacitance type in this embodiment, and is provided on the upper surface 11 a of the base 11. The touch sensor unit 10 detects, for example, electrostatic capacitance generated between the touch sensor unit 10 and the object at each position on the upper surface 11a of the base 11. For example, if the capacitance is equal to or greater than a threshold, contact of an object at a position equal to or greater than the threshold is detected, and an operation input corresponding to the detection result is accepted. In addition, it is not limited to the illustration of this embodiment, The touch sensor part 10 may be a resistive film type, an optical type, etc.

<1-2. Vibration device>
In the present embodiment, the vibration device 1 includes a base body 11 and a plurality of vibration motors 12.

  The base 11 is a transparent substrate on which the touch sensor unit 10 is provided, and has a plate shape having a longitudinal direction DL and a short direction DS. The longitudinal direction DL and the lateral direction DS are perpendicular to the thickness direction of the substrate 11. The short direction DS is perpendicular to the long direction DL. A touch sensor unit 10 is provided on the upper surface 11 a of the base 11. A vibration motor 12 is provided on the lower surface 11 b of the base 11. Hereinafter, the lower surface 11b may be referred to as the “mounting surface 11b” of the vibration motor 12.

  The vibration motor 12 generates vibration by driving based on a drive signal output from the drive unit 113. The vibration has a vibration component having a vibration direction DvS or DvL perpendicular to the normal direction of the mounting surface 11b. As described above, the vibration motor 12 is provided on the mounting surface 11 b having the longitudinal direction DL of the base body 11. The plurality of vibration motors 12 include a first vibration motor 121 and a second vibration motor 122.

  The number of first vibration motors 121 and the number of second vibration motors 122 are each singular in the present embodiment, but are not limited to this example, and may be plural. The number of first vibration motors 121 is preferably the same as the number of second vibration motors 122. According to this configuration, the vibrations of the first vibration motor 121 and the second vibration motor 122 can be easily adjusted. That is, even if the vibrations of the individual vibration motors 12 are not strictly adjusted, the vibration deviation in the first vibration motor 121 and the vibration deviation in the second vibration motor 122 are adjusted with the same degree of accuracy. It becomes easy to vibrate both in a desired vibration state. However, the number of first vibration motors 121 may be different from the number of second vibration motors 122 without being limited to this example.

<1-2-1. Arrangement of vibration motor in longitudinal direction DL>
The first vibration motor 121 is arranged on one side in the longitudinal direction DL from the center in the longitudinal direction DL of the placement surface 11b. The second vibration motor 122 is disposed on the other side in the longitudinal direction DL from the center in the longitudinal direction DL of the placement surface 11b. Each of the first vibration motor 121 and the second vibration motor 122 generates a vibration having at least a vibration component having the same vibration direction DvS or DvL. Further, the vibration directions DvS and DvL are perpendicular to the normal direction of the mounting surface 11 b of the vibration motor 12 in the base body 11.

  According to this configuration, by arranging the first vibration motor 121 on one side in the longitudinal direction DL, the position where the first vibration motor 121 vibrates can be brought closer to one end portion in the longitudinal direction DL. Further, by arranging the second vibration motor 122 on the other side in the longitudinal direction DL, the position where the second vibration motor 122 vibrates can be brought closer to the other end portion in the longitudinal direction DL. Therefore, the end portion in the longitudinal direction DL of the vibration device 1 can be vibrated more efficiently.

  Furthermore, since the vibration of the first vibration motor 121 and the vibration of the second vibration motor 122 have the same vibration direction DvS or DvL, both vibrations can be easily strengthened. Therefore, the vibration effect at the end in the longitudinal direction DL of the vibration device 1 can be further enhanced.

  Further, in the longitudinal direction DL of the placement surface 11b, the first vibration motor 121 is preferably closer to one end portion of the placement surface 11b in the longitudinal direction DL than the center in the longitudinal direction DL. Furthermore, the second vibration motor 122 is preferably closer to the other end of the placement surface 11b in the longitudinal direction DL than the center of the longitudinal direction DL. For example, in FIG. 1, it is preferable that the first vibration motor 121 is closer to the right end portion in the drawing in the longitudinal direction DL. Moreover, in FIG. 1, the 2nd vibration motor 122 is so preferable that it is near the edge part of the left side in a figure in the longitudinal direction DL. According to this configuration, the distance in the longitudinal direction DL between the first vibration motor 121 and the second vibration motor 122 can be further increased. Therefore, the vibration effect of the first vibration motor 121 and the second vibration motor 122 can be further increased. For example, when the first vibration motor 121 and the second vibration motor 122 are caused to generate vibrations having vibration components in the vibration direction DvS perpendicular to the longitudinal direction DL in opposite phases, the normal line of the mounting surface 11b. It becomes easy to vibrate the vibration device 1 in the circumferential direction with respect to the direction. Further, since the vibration position of the first vibration motor 121 and the vibration position of the second vibration motor 122 are closer to the end portion in the longitudinal direction DL of the vibration device 1, the end portion in the longitudinal direction DL of the vibration device 1 is more efficiently disposed. Can be vibrated.

<1-2-2. Arrangement of vibration motor in short direction DS>
Next, the arrangement of the first vibration motor 121 and the second vibration motor 122 in the short direction DS will be described.

  In the short direction DS of the mounting surface 11b, the first vibration motor 121 is preferably disposed on one side in the short direction DS from the center of the mounting surface 11b in the short direction DS. Further, the second vibration motor 122 is preferably disposed on the other side in the short direction DS from the center of the mounting surface 11b in the short direction DS. For example, as shown in FIG. 1, the first vibration motor 121 is disposed at a position closer to the front end portion in the drawing in the short direction DS. In addition, as shown in FIG. 1, the second vibration motor 122 is arranged at a position closer to the end on the back side in the drawing in the short direction DS. According to this structure, the 1st vibration motor 121 and the 2nd vibration motor 122 can be arrange | positioned on the diagonal of the mounting surface 11b, for example. Therefore, the vibration effect of the first vibration motor 121 and the second vibration motor 122 can be further increased. For example, as described above, the vibration device 1 can be more easily vibrated in the circumferential direction with respect to the normal direction of the placement surface 11b.

  Alternatively, the first vibration motor 121 and the second vibration motor 122 are preferably arranged on one side in the short direction DS from the center of the mounting surface 11b in the short direction DS. For example, unlike FIG. 1, both the first vibration motor 121 and the second vibration motor 122 may be disposed closer to the end on the back side in the drawing in the short direction DS, or in the short direction. It may be arranged at a position closer to the end on the near side in the drawing in the DS. According to this structure, the 1st vibration motor 121 and the 2nd vibration motor 122 can be arrange | positioned in the short side direction DS in the mounting surface 11b. Therefore, it is possible to vibrate one side of the mounting surface 11b in the short direction DS more strongly than the other side.

<1-2-3. Vibration direction of vibration motor>
The vibration direction DvL of the vibration component of the first vibration motor 121 and the second vibration motor 122 is preferably perpendicular to the short direction DS, in other words, parallel to the longitudinal direction DL (FIGS. 8A and 9A described later). reference). With this configuration, the vibration effect in the longitudinal direction DL can be improved.

  More preferably, the vibration direction DvS of the vibration component of the first vibration motor 121 and the second vibration motor 122 is perpendicular to the longitudinal direction DL, in other words, parallel to the short direction DS (see FIG. 6A and FIG. 7A). With this configuration, the vibration device 1 is vibrated more strongly in a direction perpendicular to the longitudinal direction DL of the mounting surface 11b, or is vibrated in the circumferential direction with respect to the normal direction of the mounting surface 11b of the vibration motor 12. Can do.

  Note that at least one of the first vibration motor 121 and the second vibration motor 122 preferably vibrates only in the vibration direction DvS or DvL of the vibration component described above. Furthermore, at least one of the first vibration motor 121 and the second vibration motor 122 more preferably vibrates only in the longitudinal direction DL, and more preferably vibrates only in the lateral direction DS. Therefore, preferably, for example, a linear vibration motor may be employed for the first vibration motor 121 or the second vibration motor 122. More preferably, for example, a linear vibration motor may be employed for both the first vibration motor 121 and the second vibration motor 122. According to this configuration, a linear vibration motor that vibrates in one direction perpendicular to the normal direction of the mounting surface 11 b can be employed for at least one of the first vibration motor 121 and the second vibration motor 122. By adopting this, the vibration device 1 can be thinned. However, the present invention is not limited to these examples, and for example, an eccentric motor may be employed as at least one of the first vibration motor 121 and the second vibration motor 122. In particular, for example, eccentric motors may be employed for both the first vibration motor 121 and the second vibration motor 122.

<1-3. Vibration mode of vibration device>
The smartphone 100 is an example of the “vibration device” of the present invention. As described above, the vibration device 1 including the plurality of vibration motors 12 including the first vibration motor 121 and the second vibration motor 122, the drive unit 113, and the like. . The drive unit 113 causes the plurality of vibration motors 12 to vibrate in any one of a plurality of vibration modes.

  The plurality of vibration modes include a first piece vibration mode, a second piece vibration mode, an in-phase vibration mode, and an antiphase vibration mode. FIG. 3A is a conceptual diagram showing vibration of the vibration motor 12 in the first one-piece vibration mode. FIG. 3B is a conceptual diagram showing vibration of the vibration motor 12 in the second one-side vibration mode. FIG. 3C is a conceptual diagram showing vibration of the vibration motor 12 in the in-phase vibration mode. FIG. 3D is a conceptual diagram illustrating vibration of the vibration motor 12 in the antiphase vibration mode. 3A to 3D, the symbol A indicates the vibration of each vibration motor 12.

  In the first piece vibration mode and the second piece vibration mode, the drive unit 113 vibrates one of the first vibration motor 121 and the second vibration motor 122. The first piece vibration mode and the second piece vibration mode are examples of the “first vibration mode” in the present invention.

  More specifically, in the first single vibration mode, the drive unit 113 vibrates the first vibration motor 121 and stops the second vibration motor 122 as shown in FIG. 3A. Accordingly, in the first single vibration mode, only the first drive motor 121 side (left side in FIG. 3A) in the longitudinal direction DL of the base body 11 vibrates.

  On the other hand, in the second piece vibration mode, the drive unit 113 stops the first vibration motor 121 and vibrates the second vibration motor 122 as shown in FIG. 3B. Therefore, in the second piece vibration mode, only the second drive motor 122 side (left side in FIG. 3B) in the longitudinal direction DL of the base body 11 vibrates.

  In the in-phase vibration mode, the drive unit 113 is the same in which the first vibration motor 121 and the second vibration motor 122 are perpendicular to the normal direction of the mounting surface 11b of the vibration motor 12 in the base body 11, as shown in FIG. 3C. A vibration having the first vibration component having the vibration direction DvS or DvL and the same phase is generated. The in-phase vibration mode is an example of the “second vibration mode” in the present invention.

  In the same phase vibration mode, the vibration of the first vibration motor 121 and the vibration of the second vibration motor 122 have the same phase and vibration components of the same vibration direction DvS parallel to the short direction DS. The vibration A on the first vibration motor 121 side (right side in FIG. 3C) in the longitudinal direction DL of the base body 11 and the vibration A on the second vibration motor 122 side (left side in FIG. 3C) in the longitudinal direction DL of the base body 11 Reinforce each other. Therefore, the entire base 11 vibrates in parallel with the short direction DS with a large displacement.

  In the in-phase vibration mode, when the vibration of the first vibration motor 121 and the vibration of the second vibration motor 122 have the same phase and vibration components of the same vibration direction DvL parallel to the longitudinal direction DL, The vibration A on the first vibration motor 121 side (right side in FIG. 3C) in the longitudinal direction DL of the base 11 and the vibration A on the second vibration motor 122 side (left side in FIG. 3C) in the longitudinal direction DL of the base 11 are mutually Strengthen each other. Therefore, the entire base body 11 vibrates in parallel with the longitudinal direction DL with a large displacement.

  In the anti-phase vibration mode, the driving unit 113 includes the first vibration motor 121 and the second vibration motor 122 having the same vibration direction DvS or DvL that is perpendicular to the normal direction of the placement surface 11b and a second vibration component having an opposite phase. To generate vibrations. The antiphase vibration mode is an example of the “third vibration mode” in the present invention.

  In the anti-phase vibration mode, the vibration of the first vibration motor 121 and the vibration of the second vibration motor 122 are in opposite phases and have vibration components of the same vibration direction DvS parallel to the short direction DS. In the circumferential direction centering on the normal direction of the mounting surface 11b, the first vibration motor 121 side in the longitudinal direction DL of the base body 11 (the right side in FIG. 3D) is the second vibration motor 122 in the longitudinal direction DL of the base body 11. It moves opposite to the side (left side of FIG. 3D). In other words, the first vibration motor 121 side in the longitudinal direction DL of the base body 11 (the right side in FIG. 3D) moves to one side in the circumferential direction due to the vibration A, and the second vibration motor 122 side in the longitudinal direction DL of the base body 11 in FIG. Left side) is moved to the other side in the circumferential direction by vibration A. Therefore, the base body 11 vibrates in the circumferential direction around the center of the longitudinal direction DL. Therefore, the user who has the smart phone 100 can feel the sensation as if the smart phone 100 rotates around the normal direction of the placement surface 11b.

  In the anti-phase vibration mode, when the vibration of the first vibration motor 121 and the vibration of the second vibration motor 122 are in anti-phase and have vibration components of the same vibration direction DvL parallel to the longitudinal direction DL, The vibration A on the first vibration motor 121 side (right side in FIG. 3D) in the longitudinal direction DL of the base 11 and the vibration A on the second vibration motor 122 side (left side in FIG. 3D) in the longitudinal direction DL of the base 11 are mutually Weak each other. Therefore, the vibration in the longitudinal direction DL of the entire base body 11 can be reduced or stopped. This is effective, for example, when it is desired to immediately stop the vibration in the longitudinal direction DL.

  According to these configurations, the smartphone 100 including the vibration device 1 can be vibrated in various vibration modes. For example, in the first piece vibration mode and the second piece vibration mode, one side of the smartphone 100 in the longitudinal direction DL can be vibrated. In the in-phase vibration mode, the vibration amount of the smartphone 100 is generated by causing the first vibration motor 121 and the second vibration motor 122 to generate vibrations having the same vibration direction DvS or DvL and the same vibration in the first vibration component. Can be made larger. In the anti-phase vibration mode, the first vibration motor 121 and the second vibration motor 122 are caused to generate vibrations having the same vibration direction DvL parallel to the longitudinal direction DL of the mounting surface 11b and the second vibration component having the opposite phase. Thereby, the vibration of the longitudinal direction DL of the smart phone 100 can be relieved. This is effective, for example, when it is desired to immediately stop the vibration in the longitudinal direction DL. Further, in the anti-phase vibration mode, the first vibration motor 121 and the second vibration motor 122 are caused to generate vibrations having the same vibration direction DvS perpendicular to the longitudinal direction DL of the mounting surface 11b and the second vibration component having the opposite phase. Thus, the smartphone 100 can generate vibration that rotates in the circumferential direction with respect to the normal direction of the mounting surface 11 b of the vibration motor 12. Therefore, the vibration effect at the end in the longitudinal direction DL of the smartphone 100 can be further enhanced.

<1-4. Control method of vibration device>
Next, a method for controlling the drive device 1 will be described. FIG. 4 is a flowchart for explaining a control method of the driving device 1. The process of FIG. 4 is started when the vibration motor 12 is vibrated in any one of the first piece vibration mode, the second piece vibration mode, the in-phase vibration mode, and the antiphase vibration mode.

  First, when driving the vibration motor 12 in the first single vibration mode (YES in S101), the drive unit 113 performs the process of S102. That is, the drive unit 113 applies the first AC drive voltage to the first vibration motor 121 to vibrate the first vibration motor 121. On the other hand, the drive unit 113 does not apply the second AC drive voltage to the second vibration motor 122. Therefore, the second vibration motor 122 stops without vibrating. Then, the process of FIG. 4 ends.

  On the other hand, when the vibration motor 12 is not driven in the first single vibration mode (NO in S101), the process proceeds to S111.

  When driving the vibration motor 12 in the second single vibration mode (YES in S111), the drive unit 113 performs the process of S112. That is, the drive unit 113 does not apply the first AC drive voltage to the first vibration motor 121. Therefore, the first vibration motor 121 does not vibrate and stops. On the other hand, the drive unit 113 applies the second AC drive voltage to the second vibration motor 122 to vibrate the second vibration motor 122. Then, the process of FIG. 4 ends.

  On the other hand, when the vibration motor 12 is not driven in the second single vibration mode (NO in S111), the process proceeds to S121.

  When driving the vibration motor 12 in the in-phase vibration mode (YES in S121), the drive unit 113 performs the process of S122. That is, the drive unit 113 applies the first AC drive voltage to the first vibration motor 121 to vibrate the first vibration motor 121. Further, the drive unit 113 applies a second AC drive voltage having the same phase as the first AC drive voltage to the second vibration motor 122 to vibrate the second vibration motor 122. Therefore, in S122, both sides of the longitudinal direction DL of the base body 11 vibrate in the same phase. Then, the process of FIG. 4 ends.

  On the other hand, when the vibration motor 12 is not driven in the in-phase vibration mode (NO in S121), the drive unit 113 performs the process of S112. That is, the drive unit 113 applies the first AC drive voltage to the first vibration motor 121 to vibrate the first vibration motor 121. Further, the drive unit 113 applies a second AC drive voltage having a phase opposite to the first AC drive voltage (that is, a phase shifted by 180 °) to the second vibration motor 122 to vibrate the second vibration motor 122. Then, the process of FIG. 4 ends.

  As described above, the first vibration motor 121 is arranged on one side of the longitudinal direction DL from the center of the longitudinal direction DL on the placement surface 11b having the longitudinal direction DL of the plate-like base body 11, and more than the center of the longitudinal direction DL. The control method of the vibration device 1 in which the second vibration motor 122 is disposed on the other side in the longitudinal direction DL has been described. The control method of the vibration device 1 includes a step in which the first vibration motor 121 and the second vibration motor 122 vibrate in any of a plurality of vibration modes. The vibration mode includes a first piece vibration mode and a second piece vibration mode, an in-phase vibration mode, and an antiphase vibration mode. In the first piece vibration mode and the second piece vibration mode, one of the first vibration motor 121 and the second vibration motor 122 vibrates. In the in-phase vibration mode, the first vibration motor 121 and the second vibration motor 122 have the same vibration direction DvS or DvL that is perpendicular to the normal direction of the mounting surface 11b of the vibration motor 12 in the base 11 and the first in phase. A vibration having a vibration component is generated. In the anti-phase vibration mode, the first vibration motor 121 and the second vibration motor 122 generate vibration having the same vibration direction DvS or DvL perpendicular to the normal direction of the mounting surface 11b and having a second vibration component having an opposite phase. To do.

  According to this control method, the vibration device 1 can be vibrated in various vibration modes. For example, in the first piece vibration mode and the second piece vibration mode, one side of the vibration device 1 in the longitudinal direction DL can be vibrated. Further, in the in-phase vibration mode, the first vibration motor 121 and the second vibration motor 122 generate vibrations having the same vibration direction DvS or DvL and the first vibration component having the same phase, thereby changing the displacement amount of the vibration device 1. Can be bigger. In the anti-phase drive mode, the first vibration motor 121 and the second vibration motor 122 are caused to generate vibrations having the same vibration direction DvL parallel to the longitudinal direction DL of the mounting surface 11b and the second vibration component having the opposite phase. Thus, the vibration in the longitudinal direction DL of the vibration device 1 can be reduced. This is effective, for example, when it is desired to immediately stop the vibration in the longitudinal direction DL. Further, in the anti-phase vibration mode, the first vibration motor 121 and the second vibration motor 122 are caused to generate vibrations having the same vibration direction DvS perpendicular to the longitudinal direction DL of the mounting surface 11b and the second vibration component having the opposite phase. Thus, vibration that rotates in the circumferential direction with respect to the normal direction of the mounting surface 11 b of the vibration motor 12 can be generated in the vibration device 1. Therefore, the vibration effect at the end in the longitudinal direction DL of the vibration device 1 can be further enhanced.

<1-5. Measurement results of vibration effects in each vibration mode>
Next, the results of measuring the vibration effect in each vibration mode by changing the arrangement of the first vibration motor 121 and the second vibration motor 122 and the vibration directions DvS and DvL in various ways are shown as first to fourth measurement examples. Will be described.

<1-5-1. Vibration measurement system>
First, the configuration of the vibration measurement system 500 that measures the vibration effect in each vibration mode will be described. FIG. 5 is a perspective view showing a schematic configuration of the vibration measurement system 500. In the vibration measurement system 500, the vibration effect was measured using the vibration body 501 having the same dimensions as the base body 11. The weight of the vibrating body 501 is 210 [g].

  In the vibration measurement system 500, one first vibration motor 121 and one second vibration motor 122 are arranged on the upper surface 501 a of the vibrating body 501. A horizontal linear vibration motor was used for the first vibration motor 121 and the second vibration motor 122. The AC drive voltage applied to the first vibration motor 121 and the second vibration motor 122 was a sine wave having an execution value of 2 [Vrms] and a frequency of 150 [Hz].

  In addition, nine vibration detection elements 502 are arranged on the lower surface 501b of the vibration body 501. The nine vibration detection elements 502 were arranged in three rows in the short direction DS and three columns in the longitudinal direction DL. A triaxial acceleration sensor was used as the vibration detection element 502.

  The vibration detection element 502 in the a-th row is disposed at one end of the lower surface 501b in the short direction DS. The vibration detection element 502 in the b-th row is disposed at the center position in the short-side direction DS on the lower surface 501b. The vibration detection elements 502 in the c-th row are arranged at the other end in the short direction DS of the lower surface 501b.

  The vibration detection elements 502 in the first row are arranged at the end of the lower surface 501b on the first vibration motor 121 side in the longitudinal direction DL. The vibration detection elements 502 in the second row are arranged at the center position in the longitudinal direction DL of the lower surface 501b. The vibration detection elements 502 in the third row are arranged at the end of the lower surface 501b on the second vibration motor 122 side in the longitudinal direction DL.

  Hereinafter, the vibration detection position on the lower surface 501b where the vibration detection elements 502 in the a-th row and the first column are arranged is referred to as Pa1. The vibration detection position on the lower surface 501b where the vibration detection element 502 in the b-th row and the first column is arranged is referred to as Pb1. The vibration detection position on the lower surface 501b where the vibration detection element 502 in the c-th row and the first column is arranged is referred to as Pc1. Further, the vibration detection position on the lower surface 501b where the vibration detection element 502 in the a-th row and the second column is arranged is referred to as Pa2. The vibration detection position on the lower surface 501b where the vibration detection element 502 in the b-th row and the second column is arranged is referred to as Pb2. The vibration detection position on the lower surface 501b where the vibration detection element 502 in the c-th row and the second column is arranged is referred to as Pc2. Further, the vibration detection position on the lower surface 501b where the vibration detection element 502 in the a-th row and the third column is arranged is referred to as Pa3. The vibration detection position on the lower surface 501b where the vibration detection element 502 in the b-th row and the third column is arranged is referred to as Pb3. The vibration detection position on the lower surface 501b where the vibration detection element 502 in the c-th row and the third column is arranged is referred to as Pc3.

  In the first measurement example to the fourth measurement example, in each vibration mode of the vibration motor 12, the magnitude of vibration detected by the vibration detection element 502 at each vibration detection position Pa1 to Pc3 is “large”, “medium”, Evaluation was made at three levels of “small”.

  The vibrating body 501 was suspended from the frame 504 by a hanging thread 503. More specifically, the four corners of the vibrating body 501 are hung with the hanging thread 503 so that the upper surface 501a of the vibrating body 501 is horizontal with respect to the vertical direction, and no movement other than the vibration of the vibration motor 12 is transmitted to the vibrating body 501. I did it. One end of each hanging thread 503 was attached to the four corners of the vibrating body 501. The other end was attached to a frame 504 fixed at a predetermined position.

<1-5-2. First measurement example>
FIG. 6A is a bottom view of the vibrating body 501 according to the first measurement example. FIG. 6B is a table showing the results of the first measurement example.

  In the first measurement example, the first vibration motor 121 and the second vibration motor 122 are arranged diagonally on the lower surface 501b of the vibrating body 501. More specifically, the first vibration motor 121 is arranged vertically below the vibration detecting element 502 in the c-th row and the first column, and the second vibration is arranged vertically below the vibration detecting element 502 in the a-th row and third column. A motor 122 was disposed. The vibration direction of the first vibration motor 121 and the second vibration motor 122 is a direction DvS parallel to the short direction DS of the vibrating body 501.

  In the first single vibration mode in which only the first vibration motor 121 is vibrated, the vibration level at the end on the first vibration motor 121 side in the longitudinal direction DL is “high”, and the center of the longitudinal direction DL and the longitudinal direction DL The vibration level at the end on the second vibration motor 122 side was “low”. In the short direction DS, no difference in vibration level was observed.

  In the second piece vibration mode in which only the second vibration motor 122 is vibrated, the vibration level at the end portion on the second vibration motor 122 side in the longitudinal direction DL is “high”, and the vibration level on the first vibration motor 121 side in the longitudinal direction DL is large. The vibration level at the end and the center in the longitudinal direction DL was “small”. In the short direction DS, no difference in vibration level was observed.

  In the same-phase vibration mode in which the first vibration motor 121 and the second vibration motor 122 are vibrated in the same phase, the vibration levels at all vibration detection positions Pa1 to Pc3 are “large”, and the longitudinal direction DL and the short direction DS Then, there was no difference in vibration level. In the same phase vibration mode, a phenomenon was observed in which the entire vibrating body 501 vibrates in parallel with the short direction DS with a large displacement.

  In the anti-phase vibration mode in which the first vibration motor 121 and the second vibration motor 122 are vibrated in opposite phases, the vibration level at both ends in the longitudinal direction DL is “high”, and the vibration level at the center in the longitudinal direction DL. Was “small”. In the short direction DS, no difference in vibration level was observed. However, in the antiphase vibration mode, the first vibration motor 121 side in the longitudinal direction DL of the vibrating body 501 is the first in the longitudinal direction DL of the vibrating body 501 in the circumferential direction centering on the normal direction of the lower surface 501b of the vibrating body 501. A phenomenon was observed in which the vibrating body 501 vibrates in the circumferential direction around the center of the longitudinal direction DL, moving in the direction opposite to the two-vibration motor 122 side.

<1-5-3. Second measurement example>
FIG. 7A is a bottom view of the vibrating body 501 according to the second measurement example. FIG. 7B is a table showing the results of the second measurement example.

  In the second measurement example, the first vibration motor 121 and the second vibration motor 122 are arranged on one side in the short direction DS on the lower surface 501b of the vibrating body 501. More specifically, the first vibration motor 121 is arranged vertically below the vibration detection element 502 in the c-th row and the first column, and the second vibration is arranged vertically below the vibration detection element 502 in the c-th row and the third column. A motor 122 was disposed. The vibration direction of the first vibration motor 121 and the second vibration motor 122 is a direction DvS parallel to the short direction DS of the vibrating body 501.

  In the second measurement example, the same result as in the first measurement side example was obtained.

<1-5-4. Third measurement example>
FIG. 8A is a bottom view of the vibrating body 501 according to the third measurement example. FIG. 8B is a table showing the results of the third measurement example.

  In the third measurement example, the first vibration motor 121 and the second vibration motor 122 are arranged diagonally on the lower surface 501b of the vibrating body 501. More specifically, the first vibration motor 121 is arranged vertically below the vibration detecting element 502 in the c-th row and the first column, and the second vibration is arranged vertically below the vibration detecting element 502 in the a-th row and third column. A motor 122 was disposed. The vibration direction of the first vibration motor 121 and the second vibration motor 122 is a direction DvL parallel to the longitudinal direction DL of the vibrating body 501.

  In the first single vibration mode in which only the first vibration motor 121 is vibrated, the vibration level at the end on the first vibration motor 121 side in the short side direction DS is “medium”, and the center and the long side in the short direction DS The vibration level at the end of the direction DL on the second vibration motor 122 side was “small”. Further, no difference in vibration level was observed in the longitudinal direction DL.

  In the second single vibration mode in which only the second vibration motor 122 is vibrated, the vibration level at the end on the second vibration motor 122 side in the short side direction DS is “medium”, and the first vibration motor 121 side in the longitudinal direction DL The vibration level at the end of each and the center in the short-side direction DS was “small”. Further, no difference in vibration level was observed in the longitudinal direction DL.

  In the same-phase vibration mode in which the first vibration motor 121 and the second vibration motor 122 are vibrated in the same phase, the vibration levels at all vibration detection positions Pa1 to Pc3 are “large”, and the longitudinal direction DL and the short direction DS Then, there was no difference in vibration level. In the same phase vibration mode, a phenomenon was observed in which the entire vibrating body 501 vibrates in parallel with the longitudinal direction DL with a large displacement.

  In the antiphase vibration mode in which the first vibration motor 121 and the second vibration motor 122 are vibrated in opposite phases, the vibration levels at all the vibration detection positions Pa1 to Pc3 are “low”, and the longitudinal direction DL and the short direction DS Then, there was no difference in vibration level. In the antiphase vibration mode, a phenomenon was observed in which the vibration of the first vibration motor 121 and the vibration of the second vibration motor 122 weakened each other and the vibration of the vibrating body 501 was alleviated.

<1-5-5. Fourth measurement example>
FIG. 9A is a bottom view of the vibrating body 501 according to the fourth measurement example. FIG. 9B is a table showing the results of the fourth measurement example.

  In the fourth measurement example, the first vibration motor 121 and the second vibration motor 122 are arranged on one side in the short direction DS on the lower surface 501b of the vibrating body 501. More specifically, the first vibration motor 121 is arranged vertically below the vibration detection element 502 in the c-th row and the first column, and the second vibration is arranged vertically below the vibration detection element 502 in the c-th row and the third column. A motor 122 was disposed. The vibration direction of the first vibration motor 121 and the second vibration motor 122 is a direction DvL parallel to the longitudinal direction DL of the vibrating body 501.

  In the fourth measurement example, almost the same result as in the third measurement side example was obtained. In particular, in the in-phase vibration mode, a slight difference was observed in the vibration level in the short direction DS, but a phenomenon was observed in which the entire vibrating body 501 vibrated in parallel with the longitudinal direction DL with a large amount of displacement. Further, in the antiphase vibration mode, a phenomenon was observed in which the vibration of the first vibration motor 121 and the vibration of the second vibration motor 122 weakened each other and the vibration of the vibrating body 501 was alleviated.

<2. Other>
The embodiment of the present invention has been described above. The scope of the present invention is not limited to the above-described embodiment. The present invention can be implemented with various modifications without departing from the spirit of the invention. In addition, the items described in the above embodiments can be arbitrarily combined as long as no contradiction occurs.

  For example, the base of the vibration device 1 on which the first vibration motor 121 and the second vibration motor 122 are provided is the transparent substrate of the touch panel 103 in the above-described embodiment, but is not limited to this example. For example, the base body of the vibration device 1 may be the housing 101 of the smartphone 100. Alternatively, a vibrating body having the longitudinal direction DL separately from the transparent substrate of the touch panel 103 may be provided in the smartphone 100 as the base of the vibrating device 1.

  The present invention is useful for a vibration apparatus including a vibration device that requires various vibration modes and a method for controlling the vibration device.

  DESCRIPTION OF SYMBOLS 100 ... Smartphone, 1 ... Vibration device, 101 ... Case, 102 ... Display part, 103 ... Touch panel, 104 ... Transparent board member, 10 ... Touch sensor part, 11 ... Base, 11a ... Upper surface, 11b ... Lower surface (mounting surface), 12 ... Vibration motor, 121 ... First vibration motor, 122 ... Second vibration motor, 111 ... Memory 112 112 CPU 113 Drive unit 114 Display control unit 115 Audio output unit 116 Power source 117 Communication I / F 500 ..Vibration measurement system, 501 ... vibrating body, 501a ... upper surface, 501b ... lower surface, 502 ... vibration detecting element, 503 ... hanging thread, 504 ... frame, DL・ Longitudinal direction, DS ... short direction, DvS, vL ··· vibration direction, Pa1, Pb1, Pc1, Pa2, Pb2, Pc2, Pa3, Pb3, Pc3 ··· vibration detection position

Claims (10)

A plate-like substrate;
A plurality of vibration motors provided on a mounting surface having a longitudinal direction of the substrate;
With
The plurality of vibration motors are:
A first vibration motor disposed on one side in the longitudinal direction from the longitudinal center of the placement surface;
A second vibration motor disposed on the other side in the longitudinal direction from the longitudinal center of the placement surface;
Including
The first vibration motor and the second vibration motor each generate a vibration having a vibration component having at least the same vibration direction perpendicular to a normal direction of a mounting surface of the vibration motor in the base.   The vibration device according to claim 1, wherein a vibration direction of the vibration component is perpendicular to a longitudinal direction of the placement surface.   3. The vibration device according to claim 1, wherein at least one of the first vibration motor and the second vibration motor vibrates only in a vibration direction of the vibration component. In the longitudinal direction of the mounting surface,
The first vibration motor is closer to one longitudinal end of the mounting surface than the longitudinal center,
4. The vibration device according to claim 1, wherein the second vibration motor is closer to the other end in the longitudinal direction of the placement surface than to the center in the longitudinal direction. The first vibration motor is disposed on one side in the short direction from the center in the short direction of the placement surface,
5. The vibration device according to claim 1, wherein the second vibration motor is disposed on the other side in the short direction than the center in the short direction of the placement surface.   5. The vibration device according to claim 1, wherein the first vibration motor and the second vibration motor are arranged on one side in the short direction with respect to the center in the short direction of the mounting surface.   7. The vibration device according to claim 1, wherein the number of the first vibration motors is the same as the number of the second vibration motors. The vibration device according to claim 1, comprising a plurality of vibration motors including the first vibration motor and the second vibration motor;
A drive unit that vibrates a plurality of vibration motors in any one of a plurality of vibration modes;
With
The vibration mode is
A first vibration mode for vibrating one of the first vibration motor and the second vibration motor;
The first vibration motor and the second vibration motor generate a second vibration having a first vibration component in the same vibration direction and in the same phase that is perpendicular to the normal direction of the mounting surface of the vibration motor in the base. Vibration mode,
A third vibration mode in which the first vibration motor and the second vibration motor generate a vibration having a second vibration component in the same vibration direction and opposite in phase to the normal direction of the mounting surface;
Including a vibration device. An input unit that accepts operation inputs is further provided,
The vibration device according to claim 8, wherein the vibration device is mounted on the input unit. On the mounting surface having the longitudinal direction of the plate-like substrate, the first vibration motor is disposed on one side in the longitudinal direction from the center in the longitudinal direction, and the second vibration motor is disposed on the other side in the longitudinal direction from the center in the longitudinal direction. A control method for a vibration device,
The first vibration motor and the second vibration motor comprising a step of vibrating in any one of a plurality of vibration modes;
The vibration mode is:
A first vibration mode in which one of the first vibration motor and the second vibration motor vibrates;
The first vibration motor and the second vibration motor generate a second vibration having a first vibration component in the same vibration direction and in the same phase that is perpendicular to the normal direction of the mounting surface of the vibration motor in the base. Vibration mode,
A third vibration mode in which the first vibration motor and the second vibration motor generate a vibration having a second vibration component in the same vibration direction and opposite in phase to the normal direction of the mounting surface;
A method for controlling a vibrating device.

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