Patent Publication Number: US-2015084890-A1

Title: Input device

Description:
CLAIM OF PRIORITY 
     This application claims benefit of priority to Japanese Patent Application No. 2013-199770, filed on Sep. 26, 2013, and Japanese Patent Application No. 2014-053534, filed on Mar. 17, 2014, which are hereby incorporated by reference in their entirety. 
     BACKGROUND 
     1. Field of the Disclosure 
     The present disclosure relates to an input device, and more particularly, to an input device that has a simple structure. 
     2. Description of the Related Art 
     Recently, the number of input devices of which input operations can be performed by the contact with an operation surface and which provide an operation feeling to an operator by applying vibration or the like has been increased. An input device disclosed in the following Japanese Patent No. 5173044 is known as this input device. 
     The input device disclosed in Japanese Patent No. 5173044 will be described below with reference to  FIG. 17 .  FIG. 17  is an exploded perspective view showing the structure of the input device  900  disclosed in Japanese Patent No. 5173044. 
     As shown in  FIG. 17 , the input device  900  disclosed in Japanese Patent No. 5173044 includes a touch panel  902  as a detector that detects an operation tracing an operation surface, a pressing mechanism  903  that allows an operation for pressing the touch panel  902  down from a reference position, a push switch  905  as a pressing detector that detects a pressing operation performed by the pressing mechanism  903 , and a drive mechanism  907  that allows the touch panel  902  to be driven upward from the reference position. The pressing mechanism  903  mainly includes a push rod  930  as a rod that comes into contact with the lower surface of the touch panel  902  on the basis of the pressing operation, a body  904  as a support that supports the push rod  930 , and a spring  931  as a force generator that is provided in the body  904 , generates a force in a direction of the touch panel  902 , and applies the force to the push rod  930 . The drive mechanism  907  mainly includes a gear shaft  970  and a motor  975 . The input device  900  drives the touch panel  902  in a vertical direction by the drive of the drive mechanism  907 . Since the touch panel  902  is driven in the vertical direction as described above, the input device  900  can provide an operation feeling to an operator. Further, when the touch panel  902  is pressed, the push switch  905  disposed below the touch panel  902  is operated and detects a pressing operation. 
     Since the drive mechanism  907  and the pressing mechanism  903  are formed separately from each other and each of the drive mechanism  907  and the pressing mechanism  903  includes a plurality of components, the structure of the input device  900  disclosed in Japanese Patent No. 5173044 is complicated. 
     SUMMARY 
     An input device includes: an operation unit on which an input operation is capable of being performed by the contact between an operating body and an upper surface of the operation unit or the approach of the operating body to the upper surface of the operation unit, and which is supported so as to be capable of moving downward from a reference position according to pressing performed by the operating body and is formed in the shape of a flat plate; an input detection unit configured to detect the input operation performed on the operation unit; a pressing detection unit configured to detect that the operation unit has been moved downward from the reference position; a drive member that is provided below the operation unit and drives the operation unit in a vertical direction; and a case member configured to hold the drive member. The drive member is disposed at a central position of the operation unit in plan view, the drive member is a solenoid actuator including a columnar plunger that is capable of being driven in the vertical direction, an upper end portion of the plunger is disposed so as to come into contact with a lower surface of the operation unit, and the plunger is pressed down by the operation unit with a downward movement of the operation unit. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is an exploded perspective view showing the structure of an input device according to a first embodiment; 
         FIG. 2  is a perspective view showing the appearance of the input device according to the first embodiment; 
         FIG. 3  is a perspective view showing the appearance of a pressing detection unit of the first embodiment; 
         FIGS. 4A to 4C  are views showing an operation unit of the first embodiment; 
         FIGS. 5A and 5B  are views showing a drive member of the first embodiment; 
         FIG. 6  is a perspective view showing the appearance of a regulating member of the first embodiment; 
         FIGS. 7A and 7B  are views showing an interlocking member of the first embodiment; 
         FIGS. 8A and 8B  are views showing a case member of the first embodiment; 
         FIG. 9  is a plan view showing a state in which rotation stopping members of the first embodiment are engaged with rotation stopping guide portions of the operation unit; 
         FIGS. 10A and 10B  are views showing the disposition of the operation unit, a substrate, an input detection unit, and the pressing detection unit of the first embodiment; 
         FIG. 11  is a schematic cross-sectional view showing the structure of the input device according to the first embodiment; 
         FIG. 12  is a schematic plan view showing a positional relationship between elastic members, first damper members, and second damper members of the first embodiment in plan view; 
         FIG. 13  is a schematic view showing a positional relationship between a pressing portion, the pressing detection unit, and a plunger of the first embodiment; 
         FIG. 14  is a schematic view showing the operation of the operation unit when the operation unit of the first embodiment is pressed; 
         FIG. 15  is a schematic view showing a positional relationship between the pressing portion, the pressing detection unit and the plunger when the pressing portion of the first embodiment is pressed; 
         FIG. 16  is a schematic view showing the operation of the operation unit when the operation unit of the first embodiment is driven upward by the drive member; and 
         FIG. 17  is an exploded perspective view showing the structure of an input device disclosed in Japanese Patent No. 5173044. 
     
    
    
     DESCRIPTION OF THE EXEMPLARY EMBODIMENTS 
     An input device  100  according to a first embodiment will be described below. 
     The structure of the input device  100  according to the first embodiment will be described first with reference to  FIGS. 1 to 9 .  FIG. 1  is an exploded perspective view showing the structure of the input device  100  according to the first embodiment.  FIG. 2  is a perspective view showing the appearance of the input device  100  according to the first embodiment.  FIG. 3  is a perspective view showing the appearance of a pressing detection unit  10  of the first embodiment.  FIGS. 4A to 4C  are views showing an operation unit  1  of the first embodiment,  FIG. 4A  is a perspective view showing the appearance of the operation unit  1 ,  FIG. 4B  is a plan view showing the operation unit  1  that is viewed from the side corresponding to a Z2 direction shown in  FIG. 4A , and  FIG. 4C  is a side view showing the operation unit  1  that is viewed from the side corresponding to a Y2 direction shown in  FIG. 4A .  FIGS. 5A and 5B  are views showing a drive member  3  of the first embodiment,  FIG. 5A  is a perspective view showing the appearance of the drive member  3 , and  FIG. 5B  is an exploded perspective view showing the structure of the drive member  3 .  FIG. 6  is a perspective view showing the appearance of a regulating member  7  of the first embodiment.  FIGS. 7A and 7B  are views showing an interlocking member  6  of the first embodiment,  FIG. 7A  is a perspective view showing the appearance of the interlocking member  6 , and  FIG. 7B  is a perspective view showing the interlocking member  6  that is viewed from the side corresponding to the Z2 direction shown in  FIG. 7A .  FIGS. 8A and 8B  are views showing a case member  5  of the first embodiment,  FIG. 8A  is an exploded perspective view showing the structure of the case member  5 , and  FIG. 8B  is an enlarged view of a portion A shown in  FIG. 8A .  FIG. 9  is a plan view showing a state in which rotation stopping members  12  of the first embodiment are engaged with rotation stopping guide portions  1   b  of the operation unit  1 . 
     As shown in  FIG. 1 , the input device  100  includes an operation unit  1 , an input detection unit  2 , a drive member  3 , elastic members  4 , a case member  5 , an interlocking member  6 , a regulating member  7 , first damper members  8 , second damper members  9 , a pressing detection unit  10 , a substrate  11 , and rotation stopping members  12 . As shown in  FIG. 2 , the input device  100  is formed in a substantially rectangular parallelepiped shape, and the operation unit  1  is provided on the upper surface (the surface corresponding to a Z1 direction) of the input device  100 . Accordingly, input can be performed when an operating body OB (for example, a finger of a human) comes into contact with the operation unit  1  or presses the operation unit  1 . 
     The first damper member  8  has elasticity, and is formed of a rubber sheet formed in a rectangular shape as shown in  FIG. 1 . Meanwhile, four first damper members  8  are used in this embodiment. 
     The second damper member  9  has elasticity, and is formed of a rubber sheet formed in a rectangular shape as shown in  FIG. 1 . Meanwhile, four second damper members  9  are used in this embodiment. 
     The elastic member  4  is formed of a metal wire rod, and is formed in the shape of a coil spring as shown in  FIG. 1 . Meanwhile, four elastic members  4  are used in this embodiment. 
     The substrate  11  is formed of a rigid substrate such as a glass epoxy substrate, and is formed in the shape of a substantially rectangular flat plate as shown in  FIG. 1 . Circuits are formed on both surfaces of the substrate  11 . 
     The input detection unit  2  is a unit that is referred to as a capacitive touch panel or touch pad, and is formed in the shape of a substantially rectangular flat plate that has substantially the same size as the size of the substrate  11  as shown in  FIG. 1 . The input detection unit  2  includes an input surface  2   a  that detects an input operation by a change in capacitance occurring when the operating body OB comes into contact with or approaches the upper surface (the surface corresponding to the Z1 direction) of the input detection unit  2 . The input surface  2   a  is formed in the shape of a smooth flat surface. 
     The pressing detection unit  10  is formed of a push switch  10   b  including an operation button  10   a  that can be pressed as shown in  FIG. 3 , and the operation button  10   a  can be pressed in the Y2 direction. When the operation button  10   a  is pressed, the pressing detection unit  10  detects the pressing of the operation button  10   a  by the switching of the electrical connection of an electrical circuit that is formed in the pressing detection unit  10 . Meanwhile, when the pressing of the operation button  10   a  is stopped, the operation button  10   a  returns to a position where the operation button  10   a  is not yet pressed and the electrical connection of the electrical circuit also returns to a state where the operation button  10   a  is not yet pressed. 
     The operation unit  1  is made of a synthetic resin material and is formed in the shape of a rectangular flat plate as shown in  FIGS. 4A to 4C . Meanwhile, in this embodiment, the operation unit  1  includes a receiving tray part  1   e  that is formed in the shape of a flat plate and a lid part  1   f  that covers the receiving tray part  1   e . When the lid part  1   f  is disposed so as to be superimposed on the receiving tray part  1   e , a space  1   g  in which the substrate  11  on which the pressing detection unit  10  and the like have been mounted and the input detection unit  2  can be received is formed in the operation unit  1 . The upper surface of the operation unit  1  is formed of a smooth flat surface, and an operation surface  1   c , which receives an operation performed by the operating body OB, is formed on the upper surface of the operation unit  1 . Further, the operation unit  1  includes a connection portion  1   a  that is formed so as to extend downward from the center of the lower surface of the operation unit  1 . The connection portion  1   a  is formed in a cylindrical shape, but portions of the cylindrical surface of the connection portion  1   a  corresponding to a Y1-Y2 direction are notched. Accordingly, the connection portion  1   a  is divided into a portion corresponding to an X1 direction and a portion corresponding to an X2 direction. The operation unit  1  includes a plate-like hook portion  1   d  that is formed at an end of the portion of the connection portion  1   a  corresponding to the X1 direction so as to protrude in the X1 direction and a plate-like hook portion  1   d  that is formed at an end of the portion of the connection portion  1   a  corresponding to the X2 direction so as to protrude in the X2 direction. Furthermore, the operation unit  1  includes a center hole  1   h  that is formed at the center of the lower surface thereof so as to communicate with the space  1   g . The center hole  1   h  is formed so as to extend in the Y1 direction from a cylindrical inner portion of the connection portion  1   a  and the notch of the cylindrical surface corresponding to the Y1 direction. Moreover, the operation unit  1  includes rotation stopping guide portions  1   b  that are formed on side surfaces in the shape of a notch. The rotation stopping guide portions  1   b  are formed at positions where a straight line LN, which passes through the center of the operation unit  1  and substantially bisects the operation unit  1 , intersects with the side surfaces in plan view. Meanwhile, since the rotation stopping guide portions  1   b  are formed on the side surfaces of the receiving tray part  1   e  and are covered with the lid part  1   f  in this embodiment, only notches of the lower surface are exposed to the outside. 
     As shown in  FIGS. 5A and 5B , the drive member  3  is a solenoid actuator  3   c  including a columnar plunger  3   a  that can be driven in a vertical direction (Z1-Z2 direction), and the solenoid actuator  3   c  includes a guide member  3   b  that is disposed at an upper portion thereof so as to surround the periphery of the plunger  3   a . The solenoid actuator  3   c  (the drive member  3 ) can drive the plunger  3   a  in the vertical direction by an electromagnetic force that is generated by the flow of current. 
     The regulating member  7  is formed of a metal plate, and is formed in the shape of a rectangular flat plate in plan view as shown in  FIG. 6 . The regulating member  7  includes a body portion  7   c  that is formed in the shape of a rectangular flat plate, and includes a first opening  7   b  that is formed at the center of the body portion  7   c  and has a circular shape. Further, the regulating member  7  includes a plurality of legs  7   a  extending downward, and the legs  7   a  extend from four corners of the body portion  7   c  downward and in the X1-X2 direction in this embodiment. 
     The interlocking member  6  is made of a synthetic resin material, and is formed in the shape of a flat plate as shown in  FIGS. 7A and 7B . The interlocking member  6  includes a base portion  6   b  that is formed in the shape of a flat plate, and includes a second opening  6   a  that is formed at the center of the base portion  6   b  and has a diameter smaller than the diameter of the first opening  7   b . Further, the diameter of the second opening  6   a  is larger than the diameter of the connection portion  1   a  of the operation unit  1 , and is smaller than a distance between the ends of the hook portions  1   d . Furthermore, the interlocking member  6  includes elastic member disposition portions  6   c  that are formed at outer peripheral ends of the base portion  6   b  facing each other with the second opening  6   a  interposed therebetween, that is, at both outer peripheral ends of the base portion  6   b  corresponding to the X1-X2 direction. The elastic member disposition portions  6   c  are formed in a recessed shape so that the elastic members  4  can be disposed in the elastic member disposition portions  6   c . Two elastic member disposition portions  6   c  are provided on each of the side corresponding to the X1 direction and the side corresponding to the X2 direction. 
     The case member  5  is made of a synthetic resin material, and is formed in a rectangular parallelepiped shape as shown in  FIG. 2 . As shown in  FIGS. 8A and 8B , the case member  5  includes an upper case member  5   b  and a lower case member  5   c , and is formed when the upper case member  5   b  is disposed so as to be superimposed on the lower case member  5   c . The upper case member  5   b  includes a receiving portion  5   d  that is formed on the upper surface thereof in the shape of a recess having a rectangular shape in plan view. A through hole  5   e , which passes through the receiving portion  5   d  in the vertical direction, is formed at the central portion of the receiving portion  5   d . Meanwhile, the through hole  5   e  is formed so as to have the size where the plunger  3   a  and the guide member  3   b  of the drive member  3  can be inserted. Further, the case member  5  includes a pressing portion  5   a  that is formed so as to extend upward, and the pressing portion  5   a  is formed apart from the through hole  5   e  with a small interval therebetween in the Y1 direction. The lower case member  5   c  is formed in a hollow shape of which the upper side is opened, and a disposition portion  5   f  in which the drive member  3  can be disposed is formed in the lower case member  5   c . Meanwhile, when the upper case member  5   b  is disposed so as to be superimposed on the lower case member  5   c  to form the case member  5 , the disposition portion  5   f  is connected to the receiving portion  5   d  through the through hole  5   e.    
     The rotation stopping member  12  is made of a synthetic resin material and is formed in the shape of a bar. Meanwhile, in this embodiment, the rotation stopping members  12  are formed integrally with the case member  5  as shown in  FIGS. 8A ,  8 B and  9 . The rotation stopping members  12  are formed in the receiving portion  5   d  of the case member  5  so as to protrude upward, are formed in a shape that can be engaged with the rotation stopping guide portions  1   b , and are disposed at positions where the rotation stopping members  12  can be engaged with the rotation stopping guide portions  1   b . Meanwhile, the rotation stopping members  12  are formed at positions where a straight line bisecting the receiving portion  5   d , which is formed in a rectangular shape, in the X1-X2 direction, and a straight line bisecting the receiving portion  5   d  in the Y1-Y2 direction intersect with the sides of the receiving portion  5   d  in the plan view of the receiving portion  5   d  of the case member  5 . 
     Next, the structure of the input device  100  will be described with reference to  FIG. 1  and  FIGS. 9 to 13 .  FIGS. 10A and 10B  are views showing the disposition of the operation unit  1 , the substrate  11 , the input detection unit  2 , and the pressing detection unit  10  of the first embodiment;  FIG. 10A  is an exploded perspective view showing the disposition of the operation unit  1 , the substrate  11 , the input detection unit  2 , and the pressing detection unit  10 ; and  FIG. 10B  is a perspective view showing a state where the operation button  10   a  is exposed from the center hole  1   h .  FIG. 11  is a schematic cross-sectional view showing the structure of the input device  100  according to the first embodiment. Meanwhile, there also are portions different from an actual structure in  FIG. 11 .  FIG. 12  is a schematic plan view showing a positional relationship between the elastic members  4 , the first damper members  8 , and the second damper members  9  of the first embodiment in plan view.  FIG. 13  is a schematic view showing a positional relationship between the pressing portion  5   a , the pressing detection unit  10 , and the plunger  3   a  of the first embodiment. 
     As shown in  FIG. 1 , the elastic members  4  are disposed in the four elastic member disposition portions  6   c  that are formed at the interlocking member  6 , respectively. Further, the plurality of second damper members  9  are provided along the circumference, which is concentric with the first opening  7   b  and has a large diameter, on the lower surface of the regulating member  7 , and are locked near bases of the leg  7   a  in this embodiment, respectively. 
     Furthermore, as shown in  FIG. 10A , the input detection unit  2  is superimposed on the upper surface of the substrate  11 , and is disposed so that the input surface  2   a  does not face the substrate  11 . Moreover, the pressing detection unit  10  is provided on the lower surface of the substrate  11  so that the operation button  10   a  faces the lower side. The input detection unit  2  and the substrate  11  on which the pressing detection unit  10  has been disposed are disposed on the lower surface of the operation unit  1  as described above. However, in this embodiment, the input detection unit  2  and the substrate  11  are disposed on the lower surface of the lid part  1   f  and the receiving tray part  1   e  is disposed on the lower surface of the substrate  11 . That is, the input surface  2   a  of the input detection unit  2  is disposed in the space  1   g  of the operation unit  1  so as to face the lid part  1   f . Meanwhile, since the operation button  10   a  of the pressing detection unit  10  is exposed to the lower side from the center hole  1   h  as shown in  FIG. 10B , the operation button  10   a  can be operated from below. 
     Further, as shown in  FIG. 11 , the interlocking member  6  is provided below the operation unit  1  and the regulating member  7  is provided between the operation unit  1  and the interlocking member  6 . The interlocking member  6 , which is disposed as described above, is connected to the operation unit  1  that is inserted into the regulating member  7 . That is, the connection portion  1   a  of the operation unit  1  is inserted into the first opening  7   b  of the regulating member  7  and is inserted into the second opening  6   a  of the interlocking member  6  and the hook portion  1   d  is engaged with the second opening  6   a , so that the operation unit  1  and the interlocking member  6  are connected to each other. Meanwhile, the interlocking member  6  is connected so as to be movable along the connection portion  1   a  in the vertical direction. Since the operation unit  1 , the interlocking member  6 , and the regulating member  7  are disposed as described above, the elastic members  4  are provided below the operation unit  1  and the second damper members  9  are disposed on the surface of the regulating member  7  facing the interlocking member  6 . 
     Furthermore, the drive member  3  is disposed in the disposition portion  5   f  (see  FIG. 8A ) of the lower case member  5   c  and the upper case member  5   b  (see  FIG. 8A ) is disposed so as to be superimposed on the lower case member  5   c  and is engaged with the lower case member  5   c , so that the case member  5  holds the drive member  3 . The plunger  3   a  of the drive member  3 , which is held by the case member  5 , protrudes from the through hole  5   e . Accordingly, the plunger  3   a  is disposed close to the pressing portion  5   a  (see  FIGS. 8A and 8B ), and protrudes upward in parallel with the pressing portion  5   a . Further, four first damper members  8  are disposed at regular intervals so as to surround the periphery of the through hole  5   e.    
     Next, the operation unit  1 , the interlocking member  6 , and the regulating member  7 , which are integrated with each other, are disposed in the receiving portion  5   d  of the case member  5  so that the operation unit  1  is exposed to the upper surface of the case member  5 . The regulating member  7  is mounted on the case member  5  through the legs  7   a  so as to cover the interlocking member  6 . Accordingly, the operation unit  1 , the interlocking member  6 , and the regulating member  7 , which are integrated with each other, are locked to the case member  5 , and the first damper members  8  are provided below the interlocking member  6  so as to be capable of coming into contact with the interlocking member  6 . Meanwhile, since the regulating member  7  is locked to the case member  5 , the elastic members  4  are interposed between the interlocking member  6  and the regulating member  7  and bias the interlocking member  6  to the lower side. Accordingly, the interlocking member  6  comes into contact with the first damper members  8 . Further, since the elastic members  4  bias the interlocking member  6  to the lower side, the operation unit  1 , which comes into contact with the interlocking member  6  by the hook portions  1   d , are elastically biased so as to come into press contact with the plunger  3   a . Accordingly, the operation unit  1  is supported so as to be capable of moving downward from a reference position RP according to the pressing that is performed by the operating body OB. Furthermore, the elastic members  4 , the first damper members  8 , and the second damper members  9 , which are disposed as described above, are disposed at a plurality of positions, that is, at four positions in this embodiment that are concentric with the center of the flat plate-like interlocking member  6  and are present outside the first opening  7   b  in plan view as shown in  FIG. 12 . Moreover, as shown in  FIG. 9 , the rotation stopping guide portion  1   b  and the rotation stopping members  12  are slidably engaged with each other. Further, as shown in  FIG. 11 , the drive member  3  is provided below the operation unit  1  and is disposed at a central position of the operation unit  1  in plan view, and the plunger  3   a  is inserted into the second and first openings  6   a  and  7   b  and is disposed so that the upper end portion of the plunger  3   a  comes into contact with the lower surface of the operation unit  1 . Furthermore, as shown in  FIG. 13 , the pressing portion  5   a  and the pressing detection unit  10  are disposed close to the plunger  3   a  and the pressing portion  5   a  is disposed so as to face the pressing detection unit  10  and is capable of pressing the operation button  10   a . The input device  100  is formed in this way. 
     Next, the operation of the input device  100  will be described with reference to  FIG. 11  and  FIGS. 13 to 15 .  FIG. 14  is a schematic view showing the operation of the operation unit  1  when the operation unit  1  of the first embodiment is pressed.  FIG. 15  is a schematic view showing a positional relationship between the pressing portion  5   a , the pressing detection unit  10  and the plunger  3   a  when the pressing portion  5   a  of the first embodiment is pressed. 
     An input operation of the input device  100  can be performed by the contact between the operating body OB, such as a finger of a human, and the upper surface of the operation unit  1  or the approach of the operating body OB to the upper surface of the operation unit  1 , and an input operation of the input device  100  can be performed by the pressing of the operation unit  1  that is performed by the operating body OB. The input operation, which is performed by the contact between the operating body OB and the upper surface of the operation unit  1  or the approach of the operating body OB to the upper surface of the operation unit  1 , will be described first. The input surface  2   a , which can detect a change in capacitance, of the input detection unit  2 , which is a capacitive touch panel, of the input device  100  is disposed in the operation unit  1  (the space  1   g ) so as to face the upper side. Capacitance is changed when the operating body OB comes into contact with or approaches the upper surface of the operation unit  1 . Accordingly, when the input surface  2   a  detects a change in capacitance, the input surface  2   a  determines that an input operation is performed. Therefore, the input surface  2   a  can detect an input operation that is performed on the operation unit  1 . 
     Next, an operation, which is performed when an input operation is performed by the pressing of the operation unit  1 , will be described. When the operation unit  1  is not pressed, the operation unit  1  is present at the height of the reference position RP as shown in  FIG. 11  and the pressing detection unit  10  is in an unpressed state as shown in  FIG. 13 . 
     When the operation unit  1  is pressed down, the contact between the hook portions  1   d  and the interlocking member  6  is released and the operation unit  1  is moved downward from the reference position RP as shown in  FIG. 14 . Meanwhile, while being guided by the guide member  3   b , the plunger  3   a  is pressed down by the operation unit  1  with the downward movement of the operation unit  1 . That is, the guide of the operation unit  1  in the vertical direction is performed by the guide member  3   b  of the plunger  3   a . Since the operation unit  1  is moved downward in this way, the operation button  10   a  of the pressing detection unit  10  disposed so as to face the pressing portion  5   a , is pressed by the pressing portion  5   a  as shown in  FIG. 15  and the electrical connection of the electrical circuit formed in the pressing detection unit  10 , and thus is switched. Accordingly, the downward movement of the operation unit  1  from the reference position RP is detected. That is, the pressing detection unit  10  detects that the operation unit  1  is pressed. Further, when the pressing of the operation unit  1  is released, the operation unit  1  returns to a state shown in  FIG. 11  where the operation unit  1  is not yet pressed. 
     Next, an operation for giving an operation feeling to an operator will be described with reference to  FIGS. 11 and 16 .  FIG. 16  is a schematic view showing the operation of the operation unit  1  when the operation unit  1  of the first embodiment is driven upward by the drive member  3 . The input device  100  is set so that the drive member  3  applies vibration to the operation unit  1  to provide an operation feeling to the operator when the operation unit  1  is pressed. When the pressing detection unit  10  detects that the operation unit  1  has been pressed, a current flows in the drive member  3 . When the current flows in the solenoid actuator  3   c  (the drive member  3 ), an electromagnetic force is generated and the plunger  3   a  is driven in the vertical direction while being guided by the guide member  3   b . When the plunger  3   a  is driven in the vertical direction as described above, the drive member  3  drives the operation unit  1  in the vertical direction to apply vibration to the operation unit  1 . Accordingly, the drive member  3  provides an operation feeling to an operator. When the plunger  3   a  is moved upward, the operation unit  1  is pushed upward and the interlocking member  6  is driven upward together with the operation unit  1  as shown in  FIG. 16 . At this time, the elastic members  4  are pressed against a biasing force and are compressed. The interlocking member  6 , which has been driven upward together with the operation unit  1 , collides with the second damper members  9 . Since the upward movement of the interlocking member  6 , which has collided with the second damper members  9 , is regulated through the second damper members  9  by the regulating member  7 , the upward movement of the interlocking member  6  is stopped. When the plunger  3   a  is moved down, the interlocking member  6  of which the upward movement has been stopped is flicked downward by the biasing force of the elastic members  4  that elastically bias the interlocking member  6  so as to make the interlocking member  6  come into press contact with the first damper members  8  and the biasing force of the second damper members  9  that are compressed by the collision of the interlocking member  6  as shown in  FIG. 11 . Accordingly, the interlocking member  6  is driven downward together with the operation unit  1 . The interlocking member  6 , which has been driven downward together with the operation unit  1 , collides with the first damper members  8  and the downward movement of the interlocking member  6  is stopped. Further, the operation unit  1  comes into contact with the plunger  3   a , so that the downward movement of the operation unit  1  is stopped. When the plunger  3   a  is repeatedly moved up and down in this way, the input device  100  provides vibration to an operator through the operation unit  1  as an operation feeling. 
     An effect, which is obtained from this embodiment, will be described below. 
     The input device  100  according to this embodiment includes: the operation unit  1  on which an input operation can be performed by the contact between the operating body OB and the upper surface of the operation unit  1  or the approach of the operating body OB to the upper surface of the operation unit  1 , and which is supported so as to be capable of moving downward from the reference position RP according to the pressing performed by the operating body OB and is formed in the shape of a flat plate; the input detection unit  2  that detects an input operation performed on the operation unit  1 ; the pressing detection unit  10  that detects that the operation unit  1  has been moved downward from the reference position RP; the drive member  3  that is provided below the operation unit  1  and drives the operation unit  1  in the vertical direction; and the case member  5  that holds the drive member  3 . The drive member  3  is disposed at the central position of the operation unit  1  in plan view, and the drive member  3  is the solenoid actuator  3   c  including the columnar plunger  3   a  that can be driven in the vertical direction. The upper end portion of the plunger  3   a  is disposed so as to come into contact with the lower surface of the operation unit  1 , and the plunger  3   a  is pressed down by the operation unit  1  with the downward movement of the operation unit  1 . 
     Accordingly, since the drive member  3  is only the solenoid actuator  3   c  including the plunger  3   a , the drive member  3  has a structure that is simpler than the structure of the drive mechanism  907  disclosed in Japanese Patent No. 5173044. Further, when the operation unit  1  is pressed, the drive member  3  is moved downward together with the operation unit  1  and also functions as a guide. Accordingly, an effect capable of providing an input device having a simple structure is obtained. 
     Furthermore, when the operating body OB is a finger of an operator, a finger of a human is likely to feel vibration differently in a planar direction according to the direction of vibration. Since there is vibration in a direction where the joints of a finger can easily move and vibration in a direction where the joints of a finger cannot easily move as the vibration in the planar direction, the finger of a human is likely to feel vibration differently according to the direction of vibration. That is, the finger of a human feels like a deviation is present in the operation feeling. In contrast, the finger of a human is able to substantially feel vibration stably in the vertical direction. Accordingly, since vibration in the planar direction cannot be applied to a finger and vibration in the vertical direction can be applied to a finger when the solenoid actuator  3   c  is used, an effect capable of providing an input device of which an operation feeling is stable is obtained. 
     Moreover, the input device  100  according to this embodiment includes the elastic members  4  that are provided below the operation unit  1 , and are formed that the elastic members  4  elastically bias the operation unit  1  so as to make the operation unit  1  come into press contact with the plunger  3   a.    
     Accordingly, since the plunger  3   a  of the drive member  3  comes into contact with the central position of the operation unit  1  in plan view and the elastic members  4  elastically bias the operation unit  1  so as to make the operation unit  1  come into press contact with the plunger  3   a , it is possible to suppress the inclination of the operation unit  1 . Therefore, a sense of being caught, which is caused by the inclination of the operation unit  1 , is hardly generated when the operation unit  1  is pressed. Further, since the central position of the operation unit  1  in plan view is vibrated by the drive member  3 , vibration is uniformly transmitted to the entire operation unit  1 . Accordingly, the deviation of an operation feeling, which is caused by the difference of an operating position, is reduced. Therefore, an effect capable of providing an input device of which an operation feeling is good is obtained. 
     Furthermore, the input device  100  of this embodiment is formed so that the solenoid actuator  3   c  includes the guide member  3   b  disposed at an upper portion thereof so as to surround the periphery of the plunger  3   a.    
     Accordingly, since the periphery of the plunger  3   a  is surrounded by the guide member  3   b , the hindrance of the operation of the plunger  3   a , which is caused by the contact between the plunger  3   a  and other components, hardly occurs and vibration can be reliably transmitted to the operation unit  1 . Therefore, an effect capable of providing an input device of which an operation feeling is better is obtained. 
     Further, the input device  100  according to this embodiment is formed so that the case member  5  includes the pressing portion  5   a  formed to extend upward, the input detection unit  2  is provided on the substrate  11  disposed on the lower surface of the operation unit  1 , the pressing detection unit  10  is formed of the push switch  10   b  including the operation button  10   a  capable of being pressed and is provided on the substrate  11  so that the operation button  10   a  faces the lower side, the pressing portion  5   a  is disposed so as to face the pressing detection unit  10  and is capable of pressing the operation unit  1 , and the pressing portion  5   a  and the pressing detection unit  10  are disposed close to the plunger  3   a.    
     Accordingly, since the input detection unit  2  and the pressing detection unit  10  are disposed on the same substrate  11 , it is possible to simplify the structure of the input device. Furthermore, the pressing portion  5   a  is formed at a part of the case member  5 , the push switch  10   b  disposed on the lower surface of the input detection unit  2  is pressed with the pressing of the operation unit  1 , and the operation button  10   a  is operated by the pressing portion  5   a . Accordingly, it is possible to simplify the detection mechanism of the pressing detection unit  10 . Moreover, since the pressing portion  5   a  and the pressing detection unit  10  are disposed close to the plunger  3   a , a plurality of components is disposed at a central portion (close to the drive member  3 ). As a result, it is possible to reduce the size of the input device. Therefore, an effect capable of providing an input device, which has a small size and a simple structure, is obtained. 
     Since the pressing portion  5   a  and the pressing detection unit  10  are disposed close to the plunger  3   a , the pressing detection unit  10  (push switch  10   b ) is pressed near the center of the operation unit  1 . Accordingly, since a force for pressing the outer peripheral end of the operation unit  1  is easily transmitted to the pressing portion  5   a  and the pressing detection unit  10  even when the outer peripheral end of the operation unit  1  is pressed, the push switch  10   b  is reliably pressed. Therefore, an effect capable of more reliably detecting pressing is obtained. 
     Further, the input device  100  according to this embodiment includes the rotation stopping members  12  formed in the shape of a bar, and is formed so that the operation unit  1  includes the rotation stopping guide portions  1   b  that are formed on side surfaces in the shape of a notch, and the rotation stopping members  12  are engaged with the rotation stopping guide portions  1   b.    
     Accordingly, since the rotation stopping members  12  and the rotation stopping guide portions  1   b  are provided and the rotation stopping members  12  are engaged with the rotation stopping guide portions  1   b , an effect capable of regulating the rotation of the operation unit  1 , which is caused by vibration applied to the operation unit  1 , is obtained. 
     Furthermore, the input device  100  according to this embodiment is formed so that the rotation stopping guide portions  1   b  are formed at the positions where the straight line LN, which passes through the center of the operation unit  1  and substantially bisects the operation unit  1 , intersects with the side surfaces in plan view. 
     Accordingly, an effect capable of more stably regulating the rotation of the operation unit  1  is obtained. 
     The input device according to the embodiment of the invention has been specifically described as described above. However, the invention is not limited to the above-mentioned embodiment, and may have various modifications without departing from the scope of the invention. For example, the invention may include the following modifications, and these modifications also belong to the scope of the invention. 
     First Modification 
     The rotation stopping guide portions  1   b  have been formed in the shape of a notch in the first embodiment, but may be formed in the shape of an opening or a hole. Meanwhile, the shape of the rotation stopping member  12  needs to be changed according to the shape of the rotation stopping guide portion  1   b.    
     Second Modification 
     The input detection unit  2  is a capacitive touch panel in the first embodiment, but may be a resistive film touch panel. 
     Third Modification 
     In the first embodiment, the regulating member  7  is mounted on the case member  5  through the legs  7   a  extending downward. Even though, for example, the legs  7   a  are formed to be flush with the body portion  7   c  without extending downward, protruding portions corresponding to the legs  7   a  are formed at the case member  5 , and the regulating member  7  is mounted on the protruding portions, the same effects as the effects obtained from the structure of the first embodiment can be obtained. 
     Fourth Modification 
     In the first embodiment, the pressing detection unit  10  has formed of the push switch  10   b  which includes the operation button  10   a  and in which the electrical connection of the electrical circuit formed therein is switched. However, the pressing detection unit  10  may be, for example, a push switch in which a magnetoresistive element or the like is built. 
     It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and alterations may occur depending on design requirements and other factors insofar as they are within the scope of the appended claims of the equivalents thereof.