JP2014081721A - Manipulation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a manipulation device capable of generating vibration of stable intensity, regardless of driving condition such as electrical condition in which a drive unit is driven.SOLUTION: A manipulation device 1 includes: a vertically movable manipulation mechanism unit; a drive mechanism unit which provides a user with a sense of touch by means of vibration via the manipulation mechanism unit; a motor 75 which is a drive unit for driving the drive mechanism unit; and a control unit 80 which provides control to monitor electrical condition when the motor 75 is to be driven and drive the motor 75 for a predetermined drive period in accordance with a result of the monitoring.

Description

  The present invention relates to an operation device, and more particularly, to an operation device having a function of presenting an operation feeling to an operator.

  As an example of a conventional information presenting apparatus that transmits information to an operator, a direction presenting apparatus that presents a direction using, for example, the tilt of an operator's finger has been proposed (see, for example, Patent Document 1).

  In the direction presentation device described in Patent Document 1, a finger placement plate is arranged on the upper surfaces of a plurality of movable panels that can be moved up and down independently, and a screen on which the car navigation device displays the finger placement plate It is comprised so that it may incline corresponding to the upper course direction. As an example of the movable part for driving the movable panel, a rack formed to project downward from the movable panel and a pinion fixed to the output shaft of the stepping motor are used.

JP 2010-204741 A

  By the way, in this type of information presentation device, there is a case where it is desired to use a structure that can provide an operation feeling similar to that of an operation device that provides a click feeling when an input operation is performed on the touch panel. The conventional direction presenting device described in Patent Document 1 is configured to engage and connect a motor pinion to a rack of a movable panel, and drive the movable panel by a motor supplied with current from a power source. However, since the output torque of the motor changes when the driving state of the motor fluctuates, such as when the power supply voltage fluctuates or the ambient temperature fluctuates, there is a problem that the target vibration amount cannot be produced.

  Therefore, an object of the present invention is to provide an operating device that enables a stable output of vibration amount regardless of a driving state such as an electrical state when the driving unit is driven.

  [1] In order to achieve the above object, the present invention provides an operation mechanism that can be moved up and down, a drive mechanism that presents an operational sensation by vibration through the operation mechanism, and a drive that drives the drive mechanism. And a control unit that monitors an electrical state when the driving unit is driven and performs control to drive the driving unit for a predetermined driving time based on the monitoring result. An operating device is provided.

  [2] The control unit detects a voltage value of a power supply voltage supplied to the drive unit, and performs control for driving the drive unit for a predetermined drive time based on the detected value. The operating device described in [1] may be used.

  [3] The control unit according to [1] or [1], wherein the control unit performs control to drive the driving unit for a predetermined driving time based on a detection value of a rising time of a current flowing through the driving unit. The operating device described in [2] may be used.

  [4] Further, the control unit increases the drive time of the drive unit as the detection value of the rise time of the current flowing through the drive unit is larger. An operating device may be used.

  ADVANTAGE OF THE INVENTION According to this invention, the operating device which enables the output of the stable vibration amount irrespective of drive states, such as an electrical state at the time of a drive part being driven, can be provided.

FIG. 1 is an exploded perspective view of an operating device according to an embodiment. FIG. 2 is a schematic diagram for explaining the arrangement of the operation devices according to the embodiment. FIG. 3 is an overall front view of the operating device showing the plate height H upward from the reference position of the operating device according to the embodiment and the downward stroke S due to the pressing operation of the plate. FIG. 4 is a block diagram of the operating device. FIG. 5 is a block diagram illustrating a control relationship among the control unit, the motor, and the power supply voltage. FIG. 6A shows a motor input signal (driving pulse signal) set to a predetermined pulse width inputted to the motor based on the detected value of the power supply voltage, and FIG. 6B is driven by this driving pulse signal. It is a graph which shows the height H of the plate. FIG. 7 is a graph showing the relationship between the motor current and time when the motor is driven, and the relationship between the current I and time t with the ambient temperature as a parameter. FIG. 8A shows a motor input signal (drive pulse signal) set to a predetermined pulse width input to the motor based on the rise time of the motor current, and FIG. 8B is driven by this drive pulse signal. It is a graph which shows the height H of the plate.

[Embodiment]
(Configuration of operating device 1)
FIG. 1 is an exploded perspective view of an operating device according to an embodiment. FIG. 2 is a schematic diagram for explaining the arrangement of the operation devices according to the embodiment. FIG. 3 is an overall front view of the operating device showing a plate height H upward from the reference position of the operating device according to the embodiment and a downward stroke S due to the pressing operation of the plate.

  The operating device 1 according to the embodiment of the present invention drives the operating mechanism unit 3 that can be moved up and down, the driving mechanism unit 7 that presents an operating sensation by vibration through the operating mechanism unit 3, and the driving mechanism unit 7. A motor 75 serving as a drive unit; and a control unit 80 that monitors an electrical state when the motor 75 is driven and performs control for driving the motor 75 for a predetermined drive time based on the monitoring result. Configured.

  The operating device 1 is configured to operate an electronic device mounted on the vehicle 9. For example, as shown in FIG. 2, the operating device 1 is disposed on a center console 90 that extends between a driver seat and a passenger seat. Electronic devices operated by the operation device 1 are, for example, a car navigation device, a music playback device, a moving image playback device, an air conditioner, and the like.

  An operator such as a driver or a passenger can perform a touch operation on the touch panel 2 mounted on the operation device 1 and can press the touch panel 2 downward. By this pressing operation, an enter input operation for inputting operation content by a touch operation or the like can be performed. Further, during these operations, the controller device 1 presents a vibration that pushes up the touch panel 2 upward by the drive mechanism unit 7 that presents an operation sensation by vibration through the operation mechanism unit 3, and gives the operator an operational sensation. Present. Thereby, it becomes possible to provide the operating device 1 excellent in operability.

  The operation mechanism unit 3 includes a touch panel 2, a reaction force generation unit 50, a body 4, and the like. The touch panel 2 can perform an enter input operation (pressing operation on) by the push switch 5 while receiving an upward reaction force by the reaction force generating unit 50 during the pressing operation. On the other hand, when the touch panel 2 is operated, the touch panel 2 is pushed upward through the links 245 and 246 driven by the operation mechanism unit 3 (motor 75). By this vibration presentation, it can be easily presented to the operator that the touch panel has been operated.

(Configuration of touch panel 2)
For example, as shown in FIG. 1, the touch panel 2 includes a sheet 20, a plate 21, a panel 22, a touch panel substrate 23, and a base 24. For example, the sheet 20 is affixed to the bottom surface 211 of the recess 210 of the plate 21 for the purpose of improving the sliding of the operator's finger. The operator operates the surface (operation surface 200) of the sheet 20, and the touch panel substrate 23 detects the operation. The plate 21 is formed using, for example, a resin material such as an elastomer resin. The plate 21 has a rectangular shape, and a step is provided around it. A recess 210 is provided at the center of the plate 21. The plate 21 is disposed on the touch panel substrate 23. The panel 22 is, for example, a square frame, and the plate 21, the touch panel substrate 23, and the base 24 are integrated. The panel 22 is formed using, for example, a resin material.

  The touch panel substrate 23 is, for example, a capacitance touch sensor that detects capacitance. The touch panel substrate 23 is configured to detect a capacitance between a detection target approaching or contacting the detection surface 230 and outputting coordinate information (contact coordinates) of detection points. In the present embodiment, since the plate 21 and the sheet 20 are disposed on the detection surface 230, the approach and contact of the sheet 20 with respect to the operation surface 200 are detected. Note that the above approach indicates a state in which the capacitance approaches the threshold value. The detection target detected by the touch panel substrate 23 is a part of the operator's body, a conductive material such as a stylus pen, and the like, but the following is a target operation unless otherwise specified.

  The touch panel 2 is accommodated in the base 24 and can be moved in the vertical direction shown in FIGS. 1 and 3 so that the body 4 described later can be pushed down or pushed upward. It is supported.

  Further, as shown in FIGS. 1 and 3, legs 240 to 243 are provided on the lower surface 24 b of the base 24 in the vicinity of the four side surfaces. The legs 240 to 243 are inserted into through holes formed in the body 4 described later, and the legs 240 to 243 serve as guides when the touch panel 2 moves.

  A link 245 and a link 246 are provided on the lower surface 24 b of the base 24. The link 245 has a recess 245a, and a link pin 711 of a first gear 71 of the drive mechanism unit 7 to be described later is inserted. The link 246 has a link recess 246a, and the link pin 721 of the second gear 72 of the drive mechanism unit 7 is inserted. Via these link pins 711 and 721, a driving force due to the rotation of a motor 75 of the driving mechanism section 7 to be described later is transmitted.

(Configuration of operation mechanism unit 3)
The operation mechanism unit 3 can move up and down with reference to the reference position O shown in FIG. 3, and supports the push rod 30 as a rod that presses the push switch 5 based on the push-down operation, and the push rod 30. It is schematically configured to include a body 4 as a support portion, and a reaction force generation portion 50 that is provided on the body 4 and generates a reaction force against a pressing operation and adds the reaction force to the push rod 30.

  The reaction force generator 50 includes a spring 31 and a push switch 5. As described above, the spring 31 is a coil spring formed using, for example, a metal material, and attempts to return the touch panel 2 upward in proportion to the stroke S that is the amount of depression from the reference position. A load F that is a reaction force is applied to the touch panel 2. Further, as described above, the push switch 5 is a push button switch that outputs push information to the control unit 80 when the tip is pushed. As a tact switch, the push switch 5 is moderated before and after the on operation after the start of the push operation. Present feeling (click feeling).

  A drive mechanism 7 and a control board 8 are accommodated in the lower part of the body 4.

  As shown in FIG. 1, the drive mechanism unit 7 is roughly configured to include a gear shaft unit 70 and a motor 75. The gear shaft portion 70 is roughly configured to include a shaft 73 and a first gear 71 and a second gear 72 fixed to both ends thereof.

  Specifically, the drive mechanism unit 7 includes a motor 75 as a driving force generation unit that generates a driving force, a pinion gear 76 as an output shaft side gear provided on the output shaft of the motor 75, and a pinion gear 76. And a first gear 71 provided with a link pin 711 as a first convex portion that is engaged with a link 245 as a first link provided on the touch panel 2.

  The drive mechanism unit 7 is connected to a shaft 73 whose one end is connected to the first gear 71 and a link 246 as a second link that is connected to the other end of the shaft 73 and faces the link 245. And a second gear 72 as a rotating member provided with a link pin 721 as a second convex portion.

  The rotation of the motor 75 drives the above-described link 245 and link 246 up and down via the pinion gear 76, the first gear 71, the second gear 72, and the link pins 711 and 721. Thereby, the touch panel 2 can be driven up and down in the vertical direction, and in particular, it can be driven in the direction of the plate height H upward from the reference position O shown in FIG. Feeling).

  Further, the drive mechanism unit 7 includes a detection unit that detects the plate height H and the stroke S, which are positions or displacements from the reference position O of the touch panel 2. The detection unit is provided on the control board 8 and an encoder disk 77a which is a slit disk attached to the first gear 71 and an encoder disk 78a which is a slit disk attached to the second gear 72, respectively. The encoder 77b and the encoder 78b are configured to read the rotation angle, and the plate height H and the stroke S are calculated by converting the rotation angle.

(Configuration of control board 8)
As shown in FIG. 1, the control board 8 is a printed wiring board on which the push switch 5, the encoders 77b and 78b, the control unit 80, and the like are arranged.

  FIG. 4 is a block diagram of the operating device. As shown in FIG. 4, the control unit 80 receives coordinate information, push information, and angle information from the touch panel substrate 23, the push switch 5, and the encoders 77b and 78b, respectively, and based on these information and previously stored information. Then, a drive signal is output to the motor 75 to drive the drive mechanism unit 7. Further, the operation information is output to the electronic device to remotely operate the electronic device.

  The control unit 80 includes, for example, a CPU (Central Processing Unit) that performs operations and processes on acquired data in accordance with a stored program, a RAM (Random Access Memory) that is a semiconductor memory, a ROM (Read Only Memory), and the like. Microcomputer.

  FIG. 5 is a block diagram illustrating a control relationship among the control unit, the motor, and the power supply voltage. A power supply voltage monitoring circuit 82, a motor drive circuit 83, a current F / B (feedback) circuit 84, an overcurrent protection circuit 85, and the like are connected to the control unit 80.

  The power supply voltage monitoring circuit 82 is connected to the control unit 80, the motor drive circuit 83, and the like, and monitors the power supply voltage by detecting the voltage value of the power supply voltage + B.

  The motor drive circuit 83 is connected to the motor 75 and controls the rotation direction and the rotation torque (number of rotations). Further, the feedback from the overcurrent protection circuit 85 can limit the overcurrent flowing through the motor 75 without using the control unit 80.

  For example, the current F / B circuit 84 feeds back the output voltage of the current detection resistor connected in series to the motor 75 to the motor drive circuit 83 via the control unit 80 and controls the current flowing through the motor 75. Further, the motor current flowing through the current detection resistor can be detected.

  The overcurrent protection circuit 85 detects an overcurrent flowing through the motor 75 and limits the current via the control unit 80 or the motor drive circuit 83 to protect the motor 75.

(Example 1 of motor 75 drive control)
FIG. 6A shows a motor input signal (driving pulse signal) set to a predetermined pulse width inputted to the motor based on the detected value of the power supply voltage + B, and FIG. 6B shows driving by this driving pulse signal. It is a graph which shows the height H of the plate made.

  The motor input signal shown in FIG. 6A is input to the motor drive circuit 83, and the motor 75 is rotationally driven with a drive current having a predetermined pulse width based on the motor input signal. The rotation of the motor 75 drives the link 245 and the link 246 upward via the pinion gear 76, the first gear 71, the second gear 72, and the link pins 711 and 721. Accordingly, the touch panel 2 can be driven by vibrating in the upward plate height H direction from the reference position O shown in FIG. This vibration drive is a reaction force presentation to the operator, and thereby a moderation feeling (click feeling) can be presented.

  Here, the above-described vibration drive is performed when the motor 75 is current-driven by a pulse signal having a reference width To of the motor input signal shown in FIG. However, even if the reference voltage value Vo of the motor input signal shown in FIG. 6A is a constant value, if the power supply voltage supplied to the motor drive circuit 83 fluctuates, the value of the current flowing through the motor 75 also varies with the power supply voltage + B. It depends on.

  Therefore, the power supply voltage monitoring circuit 82 measures the power supply voltage as a device for monitoring the electrical state when the motor 75 is driven, and the pulse width of the motor input signal shown in FIG. Adjust. The reference voltage value Vo of the motor input signal is a constant value.

  When the measured value of the power supply voltage by the power supply voltage monitoring circuit 82 is larger than the reference power supply voltage value (reference voltage value), the drive pulse width is smaller than the reference pulse width T1, as shown in FIG. The motor 75 is driven by adjusting to the pulse width Tn. When the measured value of the power supply voltage by the power supply voltage monitoring circuit 82 is smaller than the reference voltage value, the motor 75 is driven by adjusting the drive pulse width to a pulse width larger than the reference pulse width T1. Since the relationship between the power supply voltage and the motor driving time is linear, the adjusted pulse width Tn can be calculated by a relational expression inversely proportional to the power supply voltage measured by the power supply voltage monitoring circuit 82. .

  FIG. 6B is a graph showing the height H of the plate driven by this drive pulse signal. When the motor 75 is driven by the motor input signal shown in FIG. 6A, the plate height H changes in conjunction with this. When the measured value of the power supply voltage is larger than the reference voltage value, the target height Ho of the plate height H is the target plate height when the motor 75 is driven with the reference pulse width T1 shown in FIG. It will be bigger than Ho. Therefore, as described above, the motor 75 is driven by adjusting the drive pulse width to Tn smaller than the reference pulse width T1. As a result, the plate 21 can be driven to the target plate height Ho as shown by the solid line in FIG. Therefore, the desired amount of vibration can be output, and a stable reaction force can be presented regardless of fluctuations in the power supply voltage.

(Example 2 of motor 75 drive control)
FIG. 7 is a graph showing the relationship between the motor current and time when the motor is driven, and the relationship between the current I and time t with the ambient temperature as a parameter. According to FIG. 7, the rising time t _i1 at low temperature is small and the rising time t _i3 at high temperature is large with respect to the rising time t _i2 of the motor current at normal temperature (25 ° C.). This is because the winding resistance of the motor changes depending on the ambient temperature. That is, the lower the ambient temperature, the smaller the motor winding resistance, and the faster the motor 75 rises, and the higher the ambient temperature, the larger the motor winding resistance, the slower the motor 75 rises.

  Therefore, the time required to reach the predetermined current value Ia is measured in advance as the rise time of the motor current that changes according to the ambient temperature, and the relationship between the pulse width of the motor input signal corresponding to the rise time of the motor current is shown in a table. Is stored in the memory of the control unit 80.

  FIG. 8A shows a motor input signal (drive pulse signal) set to a predetermined pulse width input to the motor based on the rise time of the motor current, and FIG. 8B is driven by this drive pulse signal. It is a graph which shows the height H of the plate.

  The motor input signal shown in FIG. 8A is input to the motor drive circuit 83, and the motor 75 is rotationally driven with a drive current having a predetermined pulse width based on the motor input signal. The rotation of the motor 75 drives the link 245 and the link 246 upward via the pinion gear 76, the first gear 71, the second gear 72, and the link pins 711 and 721. Accordingly, the touch panel 2 can be driven by vibrating in the upward plate height H direction from the reference position O shown in FIG. This vibration drive is a reaction force presentation to the operator, and thereby a moderation feeling (click feeling) can be presented.

  Here, the above-described vibration drive is performed when the motor 75 is current-driven by a pulse signal having a reference width T2 of the motor input signal shown in FIG. However, even if the reference voltage value Vo of the motor input signal shown in FIG. 8A is a constant value, if the ambient temperature around the motor fluctuates, the value of the current flowing through the motor 75 also changes.

  Therefore, the rise time of the motor current by the current F / B circuit 84 is measured to monitor the electrical state when the motor 75 is driven, and based on this measured value or the ambient temperature estimated from the measured value, FIG. The pulse width of the motor input signal shown in (a) is adjusted. The reference voltage value Vo of the motor input signal is a constant value.

When the rise time of the motor current by the current F / B circuit 84 is smaller than the rise time t _i2 of the motor current at the normal temperature (25 ° C.) as a reference, the drive pulse width is set as shown in FIG. The motor 75 is driven by adjusting the pulse width Tn to be smaller than the reference pulse width T2. When the measured value of the rise time of the motor current by the current F / B circuit 84 is larger than the rise time t _i2 of the motor current at the normal temperature (25 ° C.) as a reference, the drive pulse width is larger than the reference pulse width T2. Also, the motor 75 is driven by adjusting to a large pulse width. Since there is a fixed relationship between the motor current rise time and the motor drive time, the adjusted pulse width Tn is calculated as a function of the motor current rise time measured by the current F / B circuit 84. Is possible.

FIG. 8B is a graph showing the height H of the plate driven by this drive pulse signal. When the motor 75 is driven by the motor input signal shown in FIG. 8A, the plate height H changes in conjunction with this. When the target height Ho of the plate height H is smaller than the rise time t _i2 of the motor current at the normal temperature (25 ° C.) where the measured value of the rise time of the motor current is the reference, FIG. When the motor 75 is driven with the indicated reference pulse width T2, it becomes larger than the target plate height Ho. Therefore, as described above, the motor 75 is driven by adjusting the drive pulse width to Tn smaller than the reference pulse width T2. As a result, the plate 21 can be driven to the target plate height Ho as shown by the solid line in FIG. Therefore, the desired amount of vibration can be output, and a stable reaction force can be presented regardless of changes in the ambient temperature.

(Effect of Embodiment of the Present Invention)
(1) The operating device 1 according to the embodiment of the present invention monitors the electrical state when the motor 75 as the drive unit is driven, and drives the motor 75 for a predetermined drive time based on the monitoring result. It has the control part 80 which performs control to do. Since this electrical state is monitored by measuring the power supply voltage value and the rise time of the motor current, the plate 21 can be driven with high accuracy, and the drive state such as the electrical state when the drive unit is driven. Regardless of this, it is possible to provide an operating device that can output a stable amount of vibration.
(2) The power supply voltage by the power supply voltage monitoring circuit 82 is measured as an electric state monitor when the motor 75 is driven, and the pulse of the motor input signal shown in FIG. Adjust the width. As a result, the plate 21 can be driven to the target plate height Ho as shown by the solid line in FIG. Therefore, the desired amount of vibration can be output, and a sense of operation by presenting a stable reaction force can be made possible regardless of fluctuations in the power supply voltage.
(3) The rise time of the motor current by the current F / B circuit 84 is measured to monitor the electrical state when the motor 75 is driven, and based on this measured value or the ambient temperature estimated from this, The pulse width of the motor input signal indicated by 8 (a) is adjusted. As shown by the solid line in FIG. 8B, the plate 21 can be driven to the target plate height Ho. Therefore, the desired amount of vibration can be output, and a sense of operation by presenting a stable reaction force can be made possible regardless of fluctuations in the ambient temperature.

  As mentioned above, although some embodiment of this invention was described, these embodiment is only an example and does not limit the invention which concerns on a claim. These novel embodiments can be implemented in various other forms, and various omissions, replacements, changes, and the like can be made without departing from the scope of the present invention. In addition, not all the combinations of features described in these embodiments are essential to the means for solving the problems of the invention. Furthermore, these embodiments are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 1 Operation apparatus 2 Touch panel 3 Pushing mechanism part 4 Body 5 Push switch 7 Drive mechanism part 8 Control board 9 Vehicle 20 Seat 21 Plate 22 Panel 23 Touch panel board 24 Base 24a Upper surface 24b Lower surface 30 Push rod 31 Spring 50 Reaction force generation part 70 Gear Shaft portion 71, 72 Gear 73 Shaft 75 Motor 76 Pinion gear 77a, 78a Encoder disk 77b, 78b Encoder 80 Control unit 200 Operation surface 210 Recess 230 Detection surface 240-243 Leg 245, 246 Link 245a, 246a Link recess 711 Link pin 721 Link pin

Claims (4)

An operation mechanism capable of moving up and down;
A drive mechanism that presents a sense of operation by vibration through the operation mechanism;
A drive unit for driving the drive mechanism unit;
A control unit that monitors an electrical state when the driving unit is driven, and performs control to drive the driving unit for a predetermined driving time based on the monitoring result;
An operating device comprising:   2. The control unit according to claim 1, wherein the control unit detects a voltage value of a power supply voltage supplied to the driving unit, and performs control for driving the driving unit for a predetermined driving time based on the detected value. The operating device described.   3. The operating device according to claim 1, wherein the control unit performs control to drive the drive unit for a predetermined drive time based on a detection value of a rise time of a current flowing through the drive unit. .   The operation device according to claim 3, wherein the control unit increases the drive time of the drive unit as the detected value of the rise time of the current flowing through the drive unit is larger.

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