JP4047712B2 - Operating device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an operation device that can be mounted on a small information terminal device such as a mobile phone, a PDA, or a portable game device, and more particularly to an operation device that can exhibit an operation feeling by vibration without making a sound.
[0002]
[Prior art]
As a conventional operation device capable of generating an operation feeling, for example, there is one shown in Patent Document 1.
[0003]
In the operation device shown in Patent Document 1, a contact point is formed on an insulating substrate, and a dome-shaped diaphragm is provided so as to cover the upper part of the contact point. A button supported by the case is provided on the upper part of the diaphragm. When the button is depressed, the diaphragm is pressed and bent, and the diaphragm and the contact point are brought into contact with each other to switch the switch output.
[0004]
It is common to mount such an operation device on the back side of the operation unit of a mobile phone terminal so as to generate a click feeling which is a kind of operation feeling when a key of the mobile phone terminal is operated. Has been done.
[0005]
[Patent Document 1]
Japanese Patent Laid-Open No. 5-258641
[0006]
[Problems to be solved by the invention]
However, in the mobile phone terminal equipped with the operation device described in Patent Document 1, a function that generates a click feeling when a key provided on the mobile phone terminal is operated by the operation device and vibration (vibrator) is used to receive an incoming call. It was done by a separate device from the function to notify. Also, depending on the situation, the click sound generated when the key is operated feels loud and an inconvenient scene occurs.
[0007]
Also, some foldable mobile phones generate a “click” sound that occurs when they are opened from a half-folded state. In this case as well, the sound may feel excessive in some cases.
[0008]
An object of the present invention is to solve the above-described conventional problems, and an object of the present invention is to provide an operating device capable of generating an operation feeling that does not require consideration of sound leakage.
[0009]
[Means for Solving the Problems]
  The operation device according to the present invention includes an operation unit that performs a predetermined input, a detection member that detects an operation of the operation unit, a vibration generation member, and a control that generates a drive signal when an operation is detected by the detection member. Means for operating the vibration generating member by the drive signal output from the control means,
  The vibration generating member includes a movable body, an urging member that supports the movable body, and a magnetic driving unit that reciprocates the movable body.
  The drive signal includes an accumulation signal that expands the amplitude of the movable body by a pulsed excitation signal that matches the natural frequency of the movable body, and a pulsed suppression signal that is out of phase with the excitation signal. An attenuation signal that reduces the amplitude of
  Position detecting means for detecting that the movable body has reached the center of its amplitude from the back electromotive force generated in the coil of the magnetic driving means is provided, and based on the detection output of the position detecting means, the excitation signal and The application timing of the suppression signal is determined,
  The width of the envelope connecting the peak of amplitude when the movable body is vibrated increases with the accumulated signal and contracts with the attenuation signal, and a series of changes in the envelope and contraction can be experienced as a click feeling. It is characterized by being said.
[0010]
In the present invention, since the vibration is made in accordance with the operation timing of the operation unit, it is not necessary to arrange a diaphragm or the like on the back side of the operation unit, and thus the apparatus can be thinned.
[0012]
  Also,The accumulated signal includes a pulsed reverse excitation signal having a current direction opposite to that of the excitation signal between the excitation signal and the excitation signal, and the movable body includes the excitation signal and the reverse excitation signal. Are given driving forces in opposite directions,
  The attenuation signal includes a pulse-like reverse suppression signal whose current direction is opposite to that of the suppression signal between the suppression signal and the suppression signal, and the movable body includes the suppression signal and the reverse suppression signal. In contrast, damping forces in directions opposite to each other are given.
[0013]
  OrThe accumulated signal includes a pulsed reverse excitation signal having a current direction opposite to that of the excitation signal between the excitation signal and the excitation signal, and the movable body includes the excitation signal and the reverse excitation signal. On the other hand, the driving force in directions opposite to each other is applied, and the time during which the width contracts is set longer than the time during which the width of the envelope increases.
[0014]
For example, an operation unit having one or two or more push-type key input units is provided, and the vibration generating member is driven each time the key input unit is operated, and the key input unit is operated. On the other hand, a pseudo click feeling can be given by the vibration. The operation unit may be a pad type capable of inputting coordinates, or may be a touch panel type in which a key input unit is displayed on a screen.
[0015]
In this case, the vibration type may be switched based on the input pattern of the key input unit.
[0016]
Further, the control means may determine whether or not the operation of the operation unit is correct, and when the operation of the operation unit is determined to be incorrect, the vibration meaning the warning may be generated. .
[0020]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows an example of vibration generating means mounted on the operating device of the present invention, where A is a perspective sectional view and B is a sectional view. FIG. 7 is a perspective view showing the appearance of a mobile phone terminal as an example of the operation device, and FIG. 8 is a block diagram showing the main part of the mobile phone terminal.
[0021]
As shown in FIG. 7, the mobile phone terminal 20 of the present embodiment has a case 21 in which a first case 21 a and a second case 21 b are rotatably connected about a shaft 26 as a fulcrum. The first case 21a is provided with an operation part 22 in which a plurality of push button type key input parts 22a are arranged, and the second case 21b is provided with a display part 24 formed of a liquid crystal panel. ing. In the mobile phone terminal 20, the surface of the operation unit 22 and the surface of the display unit 24 face each other and are folded into two so as to be in a non-use state (the second case 21b is indicated by a one-dot chain line). The first case 21a and the second case 21b are set to be in use when they are expanded to an angle close to approximately 180 degrees.
[0022]
As shown in FIG. 8, in the case 21 of the mobile phone terminal 20, a detection member 25 </ b> A for detecting an operation by the operation unit 22, a control means (CPU) 10, and a vibration drive means (drive IC) 30. And the vibration generating member 1 is provided.
[0023]
The detection member 25 </ b> A is, for example, in the form of a film provided on the lower side (back side) of each key input unit 22 a constituting the operation unit 22. In the control means 10, when the operation unit 22 is operated and an operation is detected by the detection member 25 </ b> A, signal processing corresponding to the operation is performed, and a drive signal (drive command) is output from the control means 10. It is output to the vibration driving means 30. And in the said vibration drive means 30, the said vibration generation member 1 is driven based on the said drive signal (drive command).
[0024]
Next, an embodiment of the vibration generating member 1 will be described.
As shown in FIG. 1, the vibration generating member 1 includes a cylindrical magnetic case 2 as a support and non-magnetic lids 3 and 3 that can be attached to both ends thereof. A non-magnetic shaft 4 is supported on the inner surfaces of the lids 3 and 3, and the shaft 4 coincides with a virtual center line OO passing through the centers of the case 2 and the lids 3 and 3.
[0025]
A coil 5 is fixed to the inner wall of the case 2. The coil 5 is formed by winding a coated conducting wire such as an enamel wire in a cylindrical shape, and is slightly shifted from the center of the length in the X direction of the case 2 to the lid 3 on the X1 side in FIG. Fixed in position.
[0026]
A movable body 6 is provided inside the case 2. The movable body 6 is provided with a non-magnetic weight 7 at one end (X2 side) and a magnet M at the other end (X2 side). Further, yoke members 8a and 8b made of a magnetic material are provided on both end faces of the magnet M. The weight 7, the yoke member 8 a, the magnet M and the yoke member 8 b have a columnar shape or a disk shape, and all the outer peripheral surfaces are located concentrically with respect to the center of the shaft 4.
[0027]
A hole 6a extending in the X direction is formed at the center of the movable body 6, that is, the center of the weight 7, the yoke member 8a, the magnet M, and the yoke member 8b, and the shaft 4 is inserted into the hole 6a. Accordingly, the movable body 6 can reciprocate along the shaft 4 in the X direction in the figure with a stroke within a predetermined range. Since the shaft 4 is made of a nonmagnetic material, the movable body 6 is not attracted to the shaft 4 by the force of the magnet, and the moving load when the movable body 6 moves along the shaft 4 is reduced. .
[0028]
The outer diameter of the magnet M and the yoke member 8b is smaller than the outer diameter of the weight 7 and the yoke member 8a and smaller than the inner diameter of the coil 5. Therefore, when the movable body 6 moves in the X1 direction along the axis 4, the magnet M and the yoke member 8b can move inside the coil 5.
[0029]
In this embodiment, the magnet M and the coil 5 form a moving magnet type magnetic drive means. However, a moving coil type magnetic drive means in which a coil is mounted on the movable body 6 and a magnet facing the coil is provided on the inner peripheral surface of the case 2 may be used.
[0030]
Biasing members 9 are provided between both ends of the movable body 6 and the inner surfaces of the lid bodies 3, 3, and the movable body 6 is moved along the axial direction by the biasing members 9, 9. Receives a reverse biasing force. The urging members 9 and 9 preferably have the same spring constant and exhibit the same elastic force when they have the same axial length. FIG. 1 shows a state in which the coil 5 is not energized. At this time, the movable body 6 receives the urging force from the urging members 9 and 9 located on both sides and moves in the moving stroke. Located at the point.
[0031]
In FIG. 1B, the urging members 9, 9 are conical coil springs. This conical coil spring has a characteristic that the spring constant changes as it is compressed and deformed. The vibration generating member 1 vibrates the movable body 6 at a natural frequency determined by the spring constant of each biasing member 9 and 9 and the mass of the movable body 6 in the neutral state shown in FIG. However, when the conical coil spring is used, the spring constants of the conical coil springs on both sides change as the movable body 6 moves in the X1 direction or the X2 direction. Therefore, the natural frequency changes as the movable body 6 moves greatly from the midpoint shown in FIG. Thereby, it can suppress that the movable body 6 resonates with a natural frequency, and moves with an amplitude larger than the stroke to control originally.
[0032]
That is, the urging members 9 and 9 using the conical coil spring have a function of determining the natural frequency based on the spring constant, and as a damper that suppresses the movement when the stroke of the movable body 6 becomes large. The function can be demonstrated. As the biasing member whose spring constant changes in accordance with the displacement as described above, a coil spring wound at an unequal pitch can be used in addition to the conical coil spring. Or you may provide separately the damper which suppresses that the amplitude of the movable body 6 becomes excessive inside the cover bodies 3 and 3. FIG.
[0033]
The magnet M is magnetized such that the end surface Ma in contact with the yoke member 8a and the end surface Mb in contact with the yoke member 8b are opposite magnetic poles. In the embodiment shown in FIG. 1, the end face Mb is an N pole and the end face Ma is an S pole. In this case, the magnetic flux φ generated by the magnet M is output toward the outer periphery via the one yoke member 8b, and reaches the case 2 across the coil 5 vertically. Further, the magnetic flux φ is guided to a position facing the other yoke member 8a through the inside of the case 2 made of a magnetic material, and is output toward the yoke member 8a from this position to reach the S pole of the magnet M. The magnetic path is formed.
[0034]
As shown in FIG. 1, when the movable body 6 is positioned at the midpoint of the moving stroke, the midpoint of the width dimension in the X direction of one yoke member 8a is the midpoint of the coil 5 in the winding axis direction. Match or nearly match.
[0035]
In the neutral state shown in FIG. 1, when a current in the direction shown in FIG. 1B is applied to the coil 5, an electromagnetic force F is generated in the X2 direction by the magnetic flux φ and the current, and the movable body 6 is moved in the X2 direction. The driving force can be given. Further, by applying a reverse current to the coil 5, it is possible to apply a driving force in the X1 direction to the movable body 6.
[0036]
Next, the vibration driving means 30 will be described. 2 is a partial cross-sectional view showing the opposing relationship between the magnet and the coil, FIG. 3 is a block diagram showing the vibration drive means, and FIG. 4 is a diagram showing an example of a drive signal given to the coil and the vibration of the movable body at that time. It is.
[0037]
As shown in FIG. 2, one end (winding end) of the coil 5 is a terminal Ta1, the other end (winding end) is a terminal Ta2, and an intermediate point between the terminal Ta1 and the terminal Ta2 (middle point of the coil 5). ) Is the intermediate terminal Ta3.
[0038]
The vibration drive means 30 shown in FIG. 3 has a position detection means 11, a signal generation means 12, a drive means 13 and a central control unit 14 connected to the intermediate terminal Ta3. The drive means 13 is provided with two output portions, one of which is connected to one terminal Ta1 of the coil 5 and the other is connected to the other terminal Ta2 of the coil 5.
[0039]
The signal generation means 12 generates a drive signal S1 based on a command from the central control unit 14 and outputs the drive signal S1 to the drive means 13. A drive current having a predetermined waveform is supplied from the drive means 13 to a terminal Ta1 of the coil 5 and a terminal. Is given to Ta2. The signal generation means 12 stores a plurality of patterns of the drive signals S1, and any one of the drive signals S1 is selected and given to the drive means 13 in response to a command from the central control unit 14. It is done.
[0040]
The position detecting means 11 detects that the movable body 6 has reached the neutral position shown in FIGS. 1 and 2, that is, the midpoint of the reciprocating movement stroke. When the midpoint detection signal detected by the position detection means 11 is given to the signal generation means 12, the signal generation means 12 performs control such as switching of the current direction of the drive signal S1 with reference to the detection signal. Is called.
[0041]
Although the position detecting means 11 is not essential, if the position detecting means 11 is provided, the sliding load of the movable body 6 increases, or the elastic force of the urging members 9 and 9 changes greatly. Even if the natural frequency of the movable body 6 is greatly deviated, the drive signal S1 following the change can be generated.
[0042]
FIG. 4 shows the waveform of the drive signal S1. In this embodiment, the drive signal S1 is given to the coil 5 as a rectangular wave, but the waveform of the drive signal S1 may be a triangular wave or the like. In FIG. 4, the neutral point of the drive signal S1 is indicated by “0”, and at this time, the coil 5 is in a non-energized state. When the drive signal S1 rises in the forward direction, a current flows through the coil 5 from the terminal Ta1 to the terminal Ta2. At this time, a driving force in the X2 direction acts on the movable body 6. Also, when the drive signal S1 shown in FIG.
[0043]
As shown in FIG. 4, the drive signal S1 includes an accumulation signal S1a. This accumulated signal S1a is for causing the movable body 6 to resonate with a resonance vibration at its natural frequency. The accumulated signal S1a includes excitation signals A1, A2, and A3, and forward current is applied to the coil 5 by the excitation signals A1, A2, and A3. In FIG. 4, the levels of the excitation signals A1, A2 and A3 are constant, and a constant amount of current is intermittently applied to the coil 5 by the excitation signals.
[0044]
FIG. 4 shows a vibration waveform in which the displacement of the movable body 6 in the X1 direction and the X2 direction is taken along the vertical axis, along with the waveform of the drive signal S1. Om of the vibration waveform means that the movable body 6 is located at the middle point shown in FIGS. In both the waveform diagram of the drive signal S1 and the diagram showing the displacement amount of the movable body 6, the horizontal axis is time t.
[0045]
The natural frequency (resonant frequency) of the movable body 6 is determined by the mass of the movable body 6 and the spring constants of the biasing members 9 and 9 (spring constants in the neutral state shown in FIG. 1). However, the excitation signals A1, A2 and A3 are given every period T which is the reciprocal of the natural frequency (resonance frequency), and the energization time is half of the period T. That is, the excitation signals A1, A2 and A3 are given when the movable body 6 has a velocity in the X2 direction, and the excitation signals A1, A2 and A3 are given to the coil 5 so as to move in the X2 direction. Further, a driving force in the X2 direction is applied to the movable body 6 having a speed of 2 mm. The excitation signal A1 is an activation signal.
[0046]
Due to the excitation signals A1, A2 and A3, the movable body 6 starts to vibrate, and the amplitude of vibration due to the natural frequency increases with time.
[0047]
In the accumulated signal S1a of the embodiment of FIG. 4, reverse excitation signals B1, B2 are included between the adjacent excitation signals A1, A2, A3. The reverse excitation signals B1 and B2 give a current in the direction opposite to the excitation signal A to the coil 5. The reverse excitation signals B1 and B2 are given to the coil 5 when the movable body 6 has a speed in the X1 direction, and further a driving force in the X1 direction is given to the movable body 6.
[0048]
As described above, the excitation signal A and the reverse excitation signal B are alternately supplied, whereby the amplitude of the movable body 6 increases rapidly in a short time.
[0049]
The accumulated signal S1a does not necessarily include the excitation signal A and the reverse excitation signal B, and even if only the excitation signal A or the reverse excitation signal B is generated, the movable body 6 is caused to vibrate. It is possible to increase the amplitude. In this case, it is possible to increase the amplitude rapidly by increasing the amount of current of the excitation signal A or the reverse excitation signal B.
[0050]
Further, the excitation signal A and the reverse excitation signal B are given only in the first period of the period in which the accumulation signal S1a is given, and the amplitude is maintained by resonance of the movable body 6 without applying a current to the coil for a while after that. Is possible.
[0051]
Here, the increase in the amplitude is maximized when the driving direction and the moving direction of the movable body 6 are aligned and the frequency matches the resonance frequency.
[0052]
As a method of controlling the increase rate (decrease rate) of the amplitude, there are a method of changing the input energy and a method of shifting the drive signal S1. The former method of changing the input energy includes control by amplitude change for changing the magnitude of the drive current (or drive voltage) applied to the coil 5 and PWM (for changing the energization time of the drive current (or drive voltage). Some are based on Pulse Width Modulation) control. As a method for shifting the latter drive signal S1, there are a method of shifting the phase and a method of shifting the frequency.
[0053]
In the PWM control, in the accumulated signal S1a, for example, the time given by the excitation signal A is made shorter than the half time of the period T, and the excitation of the remaining time is set to 0, thereby increasing the amplitude of the movable body 6. It is possible to control so as not to become excessive.
[0054]
In the phase shift, the amplitude of the movable body 6 is not excessively increased by slightly advancing or delaying the excitation signal A from the reference time without changing the pulse width (time interval) of the signal. It is possible to control.
[0055]
Furthermore, in the frequency shift, the drive frequency of the movable body is doubled from the resonance frequency, moved from a low frequency to a high frequency, or moved in the opposite direction, or matched from the shifted frequency to the resonance frequency, Further, by performing an operation of shifting from the matched state, it is possible to control the amplitude of the movable body 6 not to increase excessively. In this method, since the excitation efficiency changes and the phase shifts, it is possible to provide an excitation section and a stop section.
[0056]
  The drive signal S1 includes an attenuation signal S1b. The attenuation signal S1b includes suppression signals C1, C2, and C3. The suppression signals C1, C2, C3 are the excitation signals A1, A2, A3 andphaseWhen the movable body 6 has a speed in the X1 direction, a current in the forward direction is applied to the coil 5, and the direction opposite to the speed direction is applied to the movable body 6. A driving force in the X2 direction is applied. Thereby, the vibration of the movable body 6 vibrating at the natural frequency is attenuated.
[0057]
In FIG. 4, reverse suppression signals D1, D2 are provided between the suppression signals C1, C2, C3, and reverse currents are applied to the coil 5 by the reverse suppression signals D1, D2. By the reverse suppression signals D1 and D2, a driving force in the X1 direction that cancels the speed is applied to the movable body 6 that has a speed in the X2 direction. By alternately providing the suppression signal C and the reverse suppression signal D, the amplitude of the movable body 6 is rapidly attenuated.
[0058]
Note that only one of the suppression signal C and the reverse suppression signal D may be provided in the attenuation signal S1b. The suppression signal C and the reverse suppression signal D may be provided only in the first half of the attenuation signal, or the period of the suppression signal C and the reverse suppression signal D may be gradually shifted.
[0059]
FIG. 5 shows a vibration waveform of the movable body 6 when the accumulation signal S1a and the attenuation signal S1b are made continuous and a signal obtained by combining the accumulation signal S1a and the attenuation signal S1b is given with a period Te. In FIG. 5, the number of excitation signals A1, A2, and A3 in the accumulated signal S1a is the same as the number of suppression signals C1, C2, and C3 in the attenuation signal S1b, and the excitation signals A1, A2, and A3 are combined with the suppression signal. The amount of current applied to the coil 5 is the same in C1, C2, and C3. The number of reverse excitation signals B1, B2, and B3 and the number of reverse suppression signals D1, D2, and D3 are the same, and the amount of current applied to the coil is the same between the reverse excitation signal and the reverse suppression signal. The time lengths of the accumulation signal S1a and the attenuation signal S1b are also the same.
[0060]
In FIG. 5, the movable body 6 vibrates at the natural frequency (resonance frequency), the amplitude of the accumulated signal S1a increases with time, and the amplitude of the attenuation signal S1b attenuates. In FIG. 5, the line connecting the vertices of the amplitude of the movable body 6 is shown as an envelope E. The envelope E increases and decreases according to the period Te of the accumulated signal S1a and the attenuation signal S1b, and the envelope E The frequency fe is 1 / Te.
[0061]
The mass of the movable body 6 is small, and therefore the natural frequency (resonance frequency) is high. However, the frequency fe of the envelope E can be set lower than the resonance frequency, and a change in vibration intensity can be given. This change in the strength of vibration has a characteristic that it is easy to feel as a change in pressure (pain sensation). Further, the frequency fe of the envelope E is in a frequency band where a person can feel vibration effectively, so that the person can feel vibration effectively.
[0062]
The small vibration generating member 1 having a small mass of the movable body 6 and a high natural frequency is used to generate the vibration of the envelope E shown in FIG. Then, the person feels the waveform of the envelope E as vibration.
[0063]
Note that the period and frequency of the envelope E that can be perceived by a person can be freely changed by changing the repetition period of the combination of the accumulation signal S1a and the attenuation signal S1b in the drive signal S1. Further, the amplitude of the envelope E can be changed by changing the number and current amount of the excitation signal A and the reverse excitation signal B, and changing the number and current amount of the suppression signal C and the reverse suppression signal D.
[0064]
In the operating device according to the present embodiment, the natural frequency (resonance frequency) when the movable body 6 is vibrated is set high and is vibrated for a minute time, as indicated by reference numeral E1 (or E2) in FIG. By obtaining an envelope, a person can experience a simulated click feeling with respect to this vibration.
[0065]
The envelopes E1 and E2 are waveforms obtained by reciprocating the movable body 6 a plurality of times as shown in FIG. 5, but by amplifying the movable body 6 with a high natural frequency, the amplitude of vibration can be increased. Both attenuations are steep, and a person can experience only a single touch. Although the vibration itself is an audible region, the sound is very small because the biasing member 9 only expands and contracts several times.
[0066]
Therefore, by causing the mobile phone terminal 20 to experience a pseudo click feeling, a plate material such as a diaphragm that has been conventionally used for providing a click feel is not required, and the thickness of the device can be reduced. No noise is generated due to the deformation of the device, and the quietness of the device is enhanced.
[0067]
Further, in the mobile phone terminal 20 shown in FIG. 7, a detection member 25 </ b> C that detects that the case 21 is deformed from the non-use state to the use state is provided. In the control means 10 shown in FIG. 8, signal processing corresponding to the operation when detected by the detection member 25C is performed and a drive signal (drive command) is generated, and this drive signal (drive command) is generated. The vibration generating member 1 is driven by being transmitted to the vibration driving means 30. In the present embodiment, since the case 21 is vibrated in synchronization with the state where the case 21 is expanded to the maximum, it is possible to reliably recognize that the mobile phone terminal 20 has reached the use state.
[0068]
In addition, as shown in FIG. 9, the signal processing according to the operation may be performed by the vibration driving means 30 by detecting the detection member 25A, and the vibration generating member 1 may be driven. Thereby, the processing burden in the control means (CPU) 10 can be reduced. Further, the vibration generating member 1 may be driven by forming the control means 10 and the vibration driving means 30 by an integrated IC circuit or the like.
[0069]
Further, the control means 10 generates a drive signal (drive command) every time each key input portion 22a is pressed, and drives the vibration generating member 1 to make a person feel a pseudo click feeling. Good.
[0070]
Further, the control means 10 determines whether or not the operation on the operation unit 22 is correct, and when it is determined that the operation on the operation unit 22 is incorrect, the vibration means in the sense of giving a warning. May be generated.
[0071]
In addition, the mobile phone terminal 20 is provided with a communication means capable of communicating or making a call via a wireless medium. In the case where such a communication means is provided, a function for notifying an incoming call is provided. Yes. As a function for notifying of an incoming call, a function (manner mode) notifying by vibration instead of sound is installed. In the embodiment shown in FIG. 7, the control means 10 is provided with a detection member that detects that there is an incoming call, and the control means 10 generates a drive signal (drive command) for driving the vibration generating member 1. May be. Thus, by combining the function of notifying an incoming call with vibration and the function of giving a click feeling when the operation unit 22 is operated, the number of parts can be reduced, and the manufacturing cost can be reduced.
[0072]
In the present embodiment, the waveform of the envelope E can be controlled as shown in FIG.
[0073]
In the driving example of FIG. 6, the accumulated signal S1a alternately includes the excitation signal A and the reverse excitation signal B, but the attenuation signal S1b includes only the suppression signal C and does not include the reverse suppression signal D. The envelope E in this case has a shape that rises sharply and converges gently. Thus, the vibration generating member 1 may be controlled by the vibration driving means 30 so that the waveform shown in FIG. 6 is formed, and a single feedback vibration resembling a click feeling may be generated.
[0074]
In addition to this example, the waveform of the envelope E can be controlled by changing the contents of the accumulation signal S1a and the attenuation signal S1b. In this way, by changing the waveform of the envelope E, it is possible to arbitrarily generate vibration that makes a person feel sensitive, vibration that makes a person feel dull and heavy, and the like.
[0075]
In FIG. 2, when the center in the width direction of the yoke member 8b moves in the X1 direction between the terminal Ta1 and the intermediate terminal Ta3, the position where the magnetic force lines generated from the yoke member 8b intersect with the coil 5 moves. Thus, a counter electromotive force (voltage) Va is induced between the terminal Ta1 and the intermediate terminal Ta3. Further, when the center in the width direction of the yoke member 8b is also moved in the X1 direction between the intermediate terminal Ta3 and the terminal Ta2, the counter electromotive force (voltage) Vb between the terminal Ta2 and the intermediate terminal Ta3. Is induced. Similarly, when the magnetic force lines generated from the yoke member 8b coincide with the intermediate terminal Ta3 when moving in the X1 direction, the counter electromotive force Va and the counter electromotive force Vb induced between the terminals are equal. . When the moving direction of the movable body 6 is changed to the X2 direction, the polarities of the back electromotive forces Va and Vb induced in the coil 5 are opposite to those when moving in the X1 direction.
[0076]
At the position of the maximum amplitude in the X1 and X2 directions where the movement of the movable body 6 stops, the magnetic field lines generated from the yoke member 8b do not change with time, so the counter electromotive force Y becomes zero.
[0077]
Therefore, when the position detection means 11 detects the temporal timing of switching of the back electromotive force Va and the back electromotive force Vb, the center of the yoke member 8b in the width direction coincides with the intermediate terminal Ta3, And the maximum amplitude point can be detected. Then, as described above, the detection frequency is used to track the resonance frequency of the movable body 6 by setting the generation timing of the excitation signal A, the reverse excitation signal B, the suppression signal C, and the reverse suppression signal D. The drive signal S1 can be generated.
[0078]
Thus, the type of vibration can be changed by changing the shape of the envelope or changing the number of vibrations.
[0079]
Therefore, in the cellular phone terminal 20 shown in FIG. 7, the vibration driving means 30 can control the key input unit 22a of the operation unit 22 so that the type of vibration changes.
[0080]
The operation device according to the present embodiment is not limited to a mobile phone terminal, but may be applied to a PDA (personal digital assistant), a game controller, a computer input device, an ATM (automatic teller machine), and the like. it can. Or you may apply to the pushbutton type switch which turns on and off an electric lamp etc.
[0081]
For example, when the operation device is a pad-type coordinate input device used in, for example, a notebook computer, for example, when the pad surface is pressed (tapped), vibration due to the above-described pseudo click feeling is generated. Can be made. Further, in the case of a mouse-type input device of a computer, vibration may be generated in response to an operation of a push button provided on a mouse-type case.
[0082]
Further, the operation device may be a touch panel type used in an ATM (automated teller machine) of a financial institution. However, if the touch panel type operation unit is large, the operation unit of the touch panel is divided into a plurality of sections, and the vibration generating member 1 is installed in each section, and each vibration generating member 1 is replaced by the vibration driving means 30. It may be controlled so that a click feeling can be reliably transmitted.
[0083]
In addition, although the foldable mobile phone terminal 20 has been described with reference to FIG. 7, the present invention is not limited to this, and may be a mobile phone terminal configured by a case that is connected in a telescopic manner. When the case is deformed from the non-use state to the use state, the vibration generating member 1 is driven to obtain a pseudo click feeling when the case is deformed from the non-use state to the use state. Also good.
[0084]
【The invention's effect】
As described above, according to the present invention, it is possible to allow a person to experience vibration caused by a pseudo click feeling without making a sound. For example, when it is provided in a mobile phone terminal, the apparatus can be thinned.
[Brief description of the drawings]
1 shows an embodiment of a vibration generating member, A is a perspective sectional view, B is a sectional view,
FIG. 2 is a partial cross-sectional view showing a facing relationship between a magnet and a coil;
FIG. 3 is a block diagram showing vibration driving means;
FIG. 4 is a diagram showing an example of a drive signal given to a coil and the vibration of the movable body at that time;
FIG. 5 is a diagram showing a relationship between a signal obtained by combining an accumulation signal and an attenuation signal and a vibration waveform of the movable body;
FIG. 6 is a diagram illustrating an example of controlling the vibration waveform of an envelope;
FIG. 7 is a perspective view showing a foldable mobile phone device as an example of the operation device of the present invention;
FIG. 8 is a block diagram showing an operating device;
FIG. 9 is another block diagram showing the operating device;
[Explanation of symbols]
1 Vibration generator
2 cases
4 axis
5 coils
6 Movable body
7 weights
8a, 8b Yoke member
9 Biasing member
10 Control means
11 Current detection means
12 Signal generation means
13 Drive means
14 Central control unit
20 Mobile phone terminals
21 cases
22 Operation unit
22a Key input part
23 Control means
25A, 25B, 25C detection member
30 Vibration drive means
A, A1, A2, A3 excitation signal
B, B1, B2 Reverse excitation signal
C, C1, C2, C3 suppression signal
D, D1, D2 Reverse suppression signal
E Envelope
S1 Drive signal
S1a Accumulated signal
S1b Attenuation signal
Ta1, Ta2 terminals
Ta3 intermediate terminal
M Magnet

Claims (5)

An operation unit that performs a predetermined input, a detection member that detects an operation of the operation unit, a vibration generation member, and a control unit that generates a drive signal when an operation is detected by the detection member are provided, In the operating device in which the vibration generating member is operated by the drive signal output from the control means,
The vibration generating member includes a movable body, an urging member that supports the movable body, and a magnetic driving unit that reciprocates the movable body.
The drive signal includes an accumulation signal that expands the amplitude of the movable body by a pulsed excitation signal that matches the natural frequency of the movable body, and a pulsed suppression signal that is out of phase with the excitation signal. An attenuation signal that reduces the amplitude of
Position detecting means for detecting that the movable body has reached the center of its amplitude from the back electromotive force generated in the coil of the magnetic driving means is provided, and based on the detection output of the position detecting means, the excitation signal and The application timing of the suppression signal is determined,
The width of the envelope connecting the peak of amplitude when the movable body is vibrated increases with the accumulated signal and contracts with the attenuation signal, and a series of changes in the envelope and contraction can be experienced as a click feeling. An operating device characterized in that The accumulated signal includes a pulsed reverse excitation signal having a current direction opposite to that of the excitation signal between the excitation signal and the excitation signal, and the movable body includes the excitation signal and the reverse excitation signal. Are given driving forces in opposite directions,
The attenuation signal includes a pulse-like reverse suppression signal whose current direction is opposite to that of the suppression signal between the suppression signal and the suppression signal, and the movable body includes the suppression signal and the reverse suppression signal. The operating device according to claim 1 , wherein damping forces are applied in directions opposite to each other. The accumulated signal includes a pulsed reverse excitation signal having a current direction opposite to that of the excitation signal between the excitation signal and the excitation signal, and the movable body includes the excitation signal and the reverse excitation signal. The operating device according to claim 1 or 2 , wherein a driving force in a direction opposite to each other is applied, and a time during which the width contracts is set longer than a time during which the width of the envelope increases. An operation unit having one or more press-type key input units is provided, and the vibration generating member is driven each time the key input unit is operated, and the operation of the key input unit is performed. operating device according to any one of claims 1 to 3 wherein the click feeling is given. 4. The control device according to any one of claims 1 to 3 , wherein the control means determines whether the operation of the operation unit is correct and determines that the operation unit is operated incorrectly. The operation device according to the above.

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