Abstract:
A bank note stacking and sorting device, comprising a bank note feeding unit, a bank note stacking unit, and a bank note sorting unit; the bank note feeding unit comprises a bank note guiding table, and a wind wheel sleeved on the bank note guiding table; the bank note stacking unit comprises a bank note stacking rack, and a bank note baffle plate disposed on the bank note stacking rack; the bank note baffle plate is perpendicular to the bottom surface of the bank note stacking rack; the bank note stacking rack is disposed in the bank note feeding direction of the bank note feeding unit for stacking bank notes; the bank note sorting unit comprises a limiting plate; the limiting plate is disposed on the bank note stacking unit, and is perpendicular to the bank note baffle plate.

Description:
[0001]    The present application claims the benefit of priority to Chinese Patent Application No. 201210279637.X titled “BANKNOTE STACKING AND ARRANGING DEVICE AND SYSTEM” and filed with the State Intellectual Property Office on Aug. 7, 2012, the entire disclosure of which is incorporated herein by reference. 
       FIELD OF THE INVENTION 
       [0002]    The present application belongs to the field of financial apparatus, and relates to a stacking and arranging device for sheet mediums, and specifically to a banknote stacking and arranging device and a banknote stacking and arranging system. 
       BACKGROUND OF THE INVENTION 
       [0003]    With the development and progress of science and technology, in some occasions that need to handle large amounts of cash, conventional manual procedures, such as sorting and counting, hundred separating, and bundling, have been gradually replaced by various types of advanced automatic processing systems. In the process of handling cashes, it is required to stack and arrange the banknotes. 
         [0004]    Referring to  FIG. 1  together with  FIG. 2 ,  FIG. 1  is a schematic perspective view of a banknote stacking and arranging device in the prior art, and  FIG. 2  is a schematic view of conveying wheel shown in  FIG. 1  viewing from a sectional direction. The banknote stacking and arranging device includes a banknote conveying unit  10  and a banknote stacking unit  20  arranged behind the banknote conveying unit  10 . The banknote conveying unit  10  includes a banknote guide platform  12  and a conveying wheel  14 . The upper surface of the banknote guide platform  12  is a banknote guide platform surface  121  with a wavy arc. The conveying wheel  14  is provided on the banknote guide platform  12  at a protruding arc-shaped portion of the banknote guide platform surface  122 . The banknote stacking unit  20  includes a fixing frame  22 , a banknote stacking shelf  24  and a banknote baffle plate  26 . The banknote stacking shelf  24  is fixed on the fixing frame  22  and is of an “L” shape, and is adapted for the stacking of banknotes A thereon. The banknote baffle plate  26  is arranged on the banknote stacking shelf  24  and is located behind the conveying wheel  24  for stopping and holding the banknotes A. 
         [0005]    As shown in  FIG. 2 , when the conveying wheel  14  rotates clockwise along the direction B, vanes of the conveying wheel  14  carry the banknotes from the banknote guide platform surface  121  and rotate together with those banknotes. Due to the action of centrifugal force, the banknotes are thrown towards the banknote stacking shelf  24  while rotating. The banknote baffle plate  26  stops the further backward movement of the banknotes, so that the banknotes are stacked on the banknote stacking shelf  24 . However, during rotating at a high speed, due to the flexibility and elasticity of the banknotes themselves, the banknotes not only move backwards, but also move at an upward velocity component. Further, bounce movement of the banknotes may occur after falling on the banknote stacking shelf  24 . Hence, the banknotes may obliquely and disorderly lie on the banknote stacking shelf  24 , which may affect the next handling operation of arranging and stacking the banknotes. 
       SUMMARY OF THE INVENTION 
       [0006]    In order to overcome the disadvantages or deficiencies in the prior art, an object of the present application is to provide a stacking and arranging device which is capable of stacking the banknotes tidily. 
         [0007]    The present application is implemented via the following technical solutions. A banknote stacking and arranging device is provided, including a banknote conveying unit, a banknote stacking unit and a banknote arranging unit. Specifically, the banknote conveying unit includes a banknote guide platform and a conveying wheel provided on the banknote guide platform. The banknote stacking unit includes a banknote stacking shelf and a banknote baffle plate arranged on the banknote stacking shelf. The banknote baffle plate is perpendicular to the bottom face of the banknote stacking shelf, and the banknote stacking shelf is arranged along the direction in which the banknotes are conveyed by the banknote conveying unit such as to facilitate stacking of banknotes. The banknote arranging unit includes a position-limiting plate arranged above the banknote stacking unit and being perpendicular to the banknote baffle plate. 
         [0008]    Further, the banknote arranging unit further includes a fixed plate and a locating plate. The fixed plate is fixedly arranged on the banknote stacking unit, and is perpendicular to the bottom face of the banknote stacking shelf. The locating plate is arranged on and parallel to the fixed plate, and is movable up and down along the fixed plate in the direction perpendicular to the bottom face of the banknote stacking shelf. The position-limiting plate is arranged on the locating plate. 
         [0009]    Further, the banknote arranging unit further includes a position-limiting rotating shaft, and a locating gear provided on the position-limiting rotating shaft. The locating plate is provided with locating teeth in the direction perpendicular to the bottom face of the banknote stacking shelf. The locating gear is engaged with the locating teeth. 
         [0010]    Further, the banknote arranging unit further includes a position-limiting motor. The position-limiting motor drives the position-limiting rotating shaft to rotate. 
         [0011]    Further, the banknote arranging unit further includes a top plate arranged at the top of the fixed plate and being perpendicular to the fixed plate. 
         [0012]    Further, the position-limiting plate is arranged under the locating plate via a retractable portion. 
         [0013]    The present application further provides a stacking and arranging system capable of stacking the banknotes tidily and automatically, which is implemented via the following technical solutions. 
         [0014]    A banknote stacking and arranging system is provided, including a controller and a banknote stacking and arranging device, with the controller controlling the operation of the banknote stacking and arranging device. Specifically, the banknote stacking and arranging device includes a banknote conveying unit, a banknote stacking unit, and a banknote arranging unit. Specifically, the banknote conveying unit includes a banknote guide platform and a conveying wheel provided on the banknote guide platform. The banknote stacking unit includes a banknote stacking shelf and a banknote baffle plate arranged on the banknote stacking shelf. The banknote baffle plate is perpendicular to the bottom face of the banknote stacking shelf, and the banknote stacking shelf is arranged along the direction in which the banknotes are conveyed by the banknote conveying unit such as to facilitate stacking of the banknotes. The banknote arranging unit includes a position-limiting plate arranged on the banknote stacking unit and being perpendicular to the banknote baffle plate. 
         [0015]    Further, the controller includes a central control module, and an image acquisition module, a data processing module, a storage module and an execution module which are electrically connected to the central control module. The central control module controls the image acquisition module to acquire banknote image information, and to transmit the banknote image information to the data processing module and to store the banknote image information in the storage module. The data processing module invokes a conversion formula stored in the storage module according to the banknote image information to perform data processing, generates a controlling parameter and sends the controlling parameter to the execution module. The execution module generates servo signals for execution elements so as to drive the position-limiting motor to rotate. 
         [0016]    Further, the banknote stacking and arranging system also includes a detection module electrically connected to the central control module. The central control module controls the detection module to detect position information of the position-limiting plate, to transmit the position information to the data processing module and to store the position information in the storage module. The data processing module invokes a conversion formula stored in the storage module according to the banknote image information and the position information of the position-limiting plate to perform data processing, generates a controlling parameter and sends the controlling parameter to the execution module. The execution module generates servo signals for the execution elements so as to drive the position-limiting motor to rotate. 
         [0017]    As compared with the techniques in the prior art, the banknote stacking and arranging device according to the present application is provided with a banknote arranging unit. The banknotes flying out from the conveying wheel are limited in the vertical direction by the position-limiting plate of the banknote arranging unit, and short edges of the banknotes are tidied, so that the banknotes may be tidily stacked on the banknote stacking shelf, which facilitates the next bundling process of the banknotes. 
         [0018]    As compared with the techniques in the prior art, according to the banknote stacking and arranging system in the present application, the controller controls the banknote stacking and arranging device to press the edges of the banknotes and arrange the banknotes automatically and periodically. Different locating and arranging functions can be realized according to different banknote specifications. 
         [0019]    In order to better understand the present application more clearly, specific embodiments of the present application will be set forth hereinafter in conjunction with the accompanying drawings. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0020]      FIG. 1  is a schematic perspective view of a banknote stacking and arranging device in the prior art. 
           [0021]      FIG. 2  is a right view of the banknote stacking and arranging device shown in  FIG. 1 . 
           [0022]      FIG. 3  is a schematic perspective view of a banknote stacking and arranging device according to the present application. 
           [0023]      FIG. 4  is a schematic perspective view of a banknote arranging unit of the banknote stacking and arranging device shown in  FIG. 3 . 
           [0024]      FIG. 5  is another schematic perspective view of the banknote arranging unit of the banknote stacking and arranging device shown in  FIG. 3 . 
           [0025]      FIG. 6  is a right view of the banknote stacking and arranging device shown in  FIG. 3 . 
           [0026]      FIG. 7  is a structural block diagram of a controller of a banknote stacking and arranging system according to the present application. 
           [0027]      FIGS. 8-1 ,  8 - 2  and  8 - 3  are schematic views showing the various steps at which the banknotes are tidied by the banknote stacking and arranging device  100  according to the present application. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0028]    Please refer to  FIG. 3 , which is a schematic perspective view of a banknote stacking and arranging device according to the present application. The banknote stacking and arranging device  100  includes a banknote conveying unit  110 , a banknote stacking unit  120 , and a banknote arranging unit  130 . The banknote conveying unit  110  conveys the banknotes onto the banknote stacking shelf of the banknote stacking unit  120 , and the banknotes being conveyed are stopped and tidied by the banknote arranging unit  130 . 
         [0029]    Specifically, the banknote conveying unit  110  includes a banknote guide platform  112  and a conveying wheel  114 . The upper surface of the banknote guide platform  112  is a banknote guide platform surface  1122  with a wavy arc. The conveying wheel  114  is provided on the banknote guide platform  112  at the protruding arc-shaped portion of the banknote guide platform surface  1122 . The conveying wheel  114  includes multiple banknote guide vanes  1142 . Banknotes are conveyed onto the banknote guide platform surface  1122  of the banknote guide platform one by one in sequence by a conveying device, and slidingly fall between two banknote guide vanes  1142  of the conveying wheel  114 . When the conveying wheel rotates, the banknotes are brought to rotate therewith so as to be conveyed to the banknote stacking unit  120 . 
         [0030]    The banknote stacking unit  120  includes a fixing frame  122 , a banknote stacking shelf  124  and a banknote baffle plate  126 . The fixing frame  122  serves for supporting and fixing other parts or components. The banknote stacking shelf  124  is an “L”-shaped frame and is fixed on the fixing frame  122 , and is adapted for the stacking and placement of banknotes A thereon. The banknote baffle plate  126  is arranged on the banknote stacking shelf  124  and perpendicular to the bottom part of the banknote stacking shelf  124 , and is located behind the conveying wheel  124  such that the banknotes stand against the banknote baffle plate  126 . The banknote baffle plate  126  is at an angle of 60 degrees with respect to the horizontal direction. 
         [0031]    Referring to  FIG. 4  together with  FIG. 5 ,  FIG. 4  is a schematic perspective view of a banknote arranging unit  130  of the banknote stacking and arranging device  100  shown in  FIG. 3 , and  FIG. 5  is another schematic perspective view of the banknote arranging unit  130  of the banknote stacking and arranging device  100  shown in  FIG. 3 . The banknote arranging unit  130  includes a position-limiting plate  131 , a locating plate  132 , a position-limiting motor  133 , a position-limiting rotating shaft  134 , a locating gear  135 , a fixed plate  136 , a top plate  137  and a retractable portion  138 . The fixed plate  136  is fixed on a fixing frame  122  of the banknote stacking unit  120 , and is parallel to the banknote baffle plate  126  of the banknote stacking unit  120 . The locating plate  132  is arranged on the fixed plate  136  and parallel to the fixed plate  136 , and is movable up and down along the fixed plate  136 . The locating plate  132  is provided with locating teeth  1322  in the direction perpendicular to the bottom face of the banknote stacking shelf  124 . The position-limiting plate  131  is arranged under the locating plate  132  via a retractable portion  138 . The position-limiting plate  131  includes a primary baffle plate  131   a  and a secondary baffle plate  131   b  angled with respect to each other. The primary baffle plate  131   a  is perpendicular to the banknote baffle plate  126 , and the secondary baffle plate  131   b  tilts upwards slightly. The secondary baffle plate  131   b  and the primary baffle plate  131   a  form an angle of 30 to 45 degrees therebetween, and the secondary baffle plate  131   b  has a length of 10.8 mm. The retractable portion  138  is composed of a guide shaft  1382  and a spring  1384  provided on the guide shaft  1382 . The position-limiting plate  131  is flexible to move up and down via the retractable portion  138 . The locating gear  135  is provided on the position-limiting rotating shaft  134 , and is engaged with the locating teeth  1322  on the locating plate  132 . The position-limiting motor  133  drives the position-limiting rotating shaft  134  to rotate, so that the locating gear  135  is rotated, which in turn brings the locating teeth  1322  to move up and down, so as to drive the locating plate  132  to move up and down along the fixed plate  136  and further drive the position-limiting plate  131  to move up and down. The top plate  137  is arranged at the top portion of the fixed plate  136  and is perpendicular to the fixed plate  136 . When the locating plate  132  moves up and down along the fixed plate  136 , the top plate  137  limits the maximum height of movement of the locating plate  132 . 
         [0032]    The operation principle of the banknote stacking and arranging device  100  according to the present application will be described in detail hereinafter. 
         [0033]    Please also refer to  FIG. 6 , which is a right view of the banknote stacking and arranging device shown in  FIG. 3 . The banknote conveying device (not shown) conveys the banknotes one by one in sequence onto the banknote guide platform surface  1122  of the banknote guide platform, and the banknotes slidingly fall between two banknote guide vanes  1142  of the conveying wheel  114 . When the conveying wheel  14  rotates, vanes of the conveying wheel  14  carry the banknotes on the banknote guide platform surface  1122  and rotate therewith in direction B. Due to the action of centrifugal force, the banknotes are thrown towards the banknote stacking shelf  124  while rotating. Here, the banknotes move both at a first velocity component V 1  in the direction perpendicular to the banknote baffle plate  126  and at a second velocity component V 2  perpendicular to the first velocity component V 1 . The movement of the banknotes in the direction of the first velocity component V 1  is blocked by the banknote baffle plate  26 , and the movement of the banknotes in the direction of the second velocity component V 2  is limited and blocked by the position-limiting plate  131 , so that the banknotes may rest on the banknote stacking shelf  124  tidily. 
         [0034]    The position-limiting motor  133  drives the position-limiting rotating shaft  134  to rotate clockwise or anti-clockwise, and the locating gear  135  provided on the position-limiting rotating shaft  134  rotates along with the position-limiting rotating shaft  134 . The locating teeth  1322  engaged with the locating gear  135  move up and down as the locating gear  135  rotates, and further drives the locating plate  132  to move up and down along the fixed plate  136 . The position-limiting plate  131  arranged on the locating plate  132  moves as the locating plate  132  moves, so as to set the limit position of the position-limiting plate  131  actually according to different banknote specifications. Further, when a certain number (e.g. 10 pieces) of the banknotes are stacked, the position-limiting motor  133  drives the position-limiting plate  131  to press down the banknotes such that the spring  1384  may be compressed by 2 mm. Therefore, the banknotes are stacked on the banknotes stacking shelf  124  tidily. 
         [0035]    Further, the position-limiting plate  131  may also correct the angle of the stacking of the banknotes conveyed from the conveying wheel  114 . Please refer to  FIGS. 8-1 ,  8 - 2  and  8 - 3 , which are schematic views showing the various steps at which the banknotes are tidied by the banknote stacking and arranging device  100  according to the present application. Taking the banknotes having a width of 85 mm as an example, the banknote baffle plate  126  is at an angle of 60 degrees with respect to the horizontal plane; the bottom face of the banknote stacking shelf  124  is perpendicular to the banknote baffle plate  126 ; and the position-limiting plate  131  has a distance of 88 mm from the bottom face of the banknote stacking shelf  124 . The outer diameter of the conveying wheel  114  intersects the terminal end of the banknote guide platform  112  at point “a”. The point “a” is also the starting point from which the banknotes just exit the conveying wheel  114 , and has a distance of 4.4 mm from the bottom face of the banknote stacking shelf  124 . The straight line “ac” is perpendicular to the primary baffle plate  131   a  of the position-limiting plate  131 , and point “c” is located on the primary baffle plate  131   a . The length of a straight line “ab” is equal to the width of the banknotes of 85 mm, and point “b” is located on the secondary baffle plate  131   b  of the position-limiting plate  131 , and the distance between the point “b” and the point “c” is 2.4 mm. The angle between the primary baffle plate  131   a  and the secondary baffle plate  131   b  of the position-limiting plate  131  is set to be 30 degrees, and the secondary baffle plate  131   b  has a length of 10.8 mm. The secondary baffle plate  131   b  guides the banknotes downwards onto banknote stacking shelf  124 , so as to avoid the banknotes to be caught. 
         [0036]    In  FIG. 8-1 , when the conveying wheel  114  rotates clockwise, and the banknote rotates along with the conveying wheel  114 , one end of the banknote is firstly stopped by the end of the secondary baffle plate  131   b  of the position-limiting plate  131 . At this time, the banknote is at an angle of 70 degrees with respect to the horizontal plane. The conveying wheel  114  keeps on rotating clockwise, and the end of the banknote slides downwards along the secondary baffle plate  131   b  of the position-limiting plate  131 . In  FIG. 8-2 , the end of the banknote located on the conveying wheel  114  rotates to point “a” so as to just exit the conveying wheel  114 . Since the point “a” has a distance of 4.4 mm from the bottom face of the banknote stacking shelf  124 , the distance “ac” between the point “a” and the primary baffle plate  131   a  of the position-limiting plate  131  is 83.6 mm, which is less than the width of the banknote of 85 mm. Thus, when the end of the banknote on the conveying wheel  114  rotates to point “a”, the other end of the banknote still abuts against the secondary baffle plate  131   b  of the position-limiting plate  131 . At this moment, the banknote is at an angle of 69 degrees with respect to the horizontal plane. As the conveying wheel  114  keeps on rotating clockwise, the end of the banknote located on the conveying wheel  114  completely move away from the conveying wheel  114 , and the other end of the banknote continues to slide downwards along the secondary baffle plate  131   b  of the position-limiting plate  131 . In  FIG. 8-3 , the banknote is at an angle of 67 degrees with respect to the horizontal plane. 
         [0037]    Because of the angle between the banknote and the horizontal plane less than 90 degrees, as well as the gravity of the banknote itself and the pushing force generated from the movement of the next banknote, the banknote finally is stacked on the banknote stacking shelf  124  at an angle of 60 degrees with respect to the horizontal plane, and leans plainly against the banknote baffle plate  126 . 
         [0038]    Compared with the techniques in the prior art, the banknote stacking and arranging device according to the present application is provided with a banknote arranging unit. The banknotes flying out from the conveying wheel are limited in position in the vertical direction via the position-limiting plate of the banknote arranging unit, and the movement angle of the banknote is corrected by the secondary baffle plate of the position-limiting plate. Besides, short edges of the banknotes may be tidied further, so that the banknotes may be tidily stacked on the banknote stacking shelf, which facilitate the next process of bundling the banknotes. 
         [0039]    Further, in order to achieve the automatic detection and control functions of the banknote stacking and arranging device, the present application further provides a banknote stacking and arranging system. The banknote stacking and arranging system  300  includes a controller  200  and a banknote stacking and arranging device  100 . Please refer to  FIG. 7 , which is a structural block diagram of a controller  200  of a banknote stacking and arranging system according to the present application. The controller  200  includes a central control module  210 , an image acquisition module  220 , a detection module  230 , a storage module  240 , a data processing module  250 , and an execution module  260 . 
         [0040]    The central control module  210  is connected to the image acquisition module  220 , the detection module  230 , the storage module  240 , the data processing module  250 , and the execution module  260 , so as to call and control the above modules and enable those modules to operate with each other harmoniously. 
         [0041]    The image acquisition module  220  includes a photoelectric sensor arranged on the banknote conveying unit  110  to acquire the image information of the banknotes and to store the information in the storage module  240 . 
         [0042]    The detection module  230  includes a position sensor and a counting sensor. The position sensor is arranged on the fixed plate  136  of the banknote arranging unit  130  to detect the position of the position-limiting plate  131  or the locating tooth  1322  and to store the detected information in the storage module  240 . The counting sensor is arranged on the banknote stacking shelf  124  or the banknote guide platform  112  to count the number of the banknotes. 
         [0043]    The storage module  240  stores image information of the banknotes, physical property information of the banknotes (including the width value of banknotes), the width value of the initial position of the position-limiting plate  131 , a conversion formula for width adjustment, a conversion formula for converting the width adjustment value into the amount of movement of elements, or the like. 
         [0044]    According to the image information acquired by the image acquisition module  220 , the initial position of the position-limiting plate  131  detected by the detection module  230 , and the number of the stacked banknotes detected by the counting sensor, the data processing module  250  invokes a conversion formula for adjusting the corresponding width and a conversion formula for the conversion amount of movement of the elements stored in the storage module  240  to perform data processing, so as to achieve a position parameter for adjusting the position-limiting plate  131  or the locating tooth  1322  and a drive parameter for driving the position-limiting motor  133 . 
         [0045]    The execution module  260  generates servo signal for the execution elements according to the drive parameter of the data processing module  250 , so as to drive the position-limiting motor  133  of the banknote stacking and arranging device  100  to rotate, and further adjust the current position of the position-limiting plate  131 . 
         [0046]    The operation process of the banknote stacking and arranging system  300  is described in detail hereinafter. 
         [0047]    1) When the conveying wheel  114  rotates, the central control module  210  controls the photoelectric sensor of the image acquisition module  220  to acquire the image information of the banknotes and to transmit the information to the data processing module  250  and to store the information in the storage module  240 . 
         [0048]    2) Meanwhile, the central control module  210  controls the position sensor of the detection module  230  to detect the current initial position of the position-limiting plate  131 , and to transmit the data to the data processing module  250 , and to store the data in the storage module  240 . 
         [0049]    3) The central control module  210  controls the data processing module  250  to invoke the conversion formulas stored in the storage module  240  for adjusting the width and for converting the amount of movement of the elements according to the current banknote image information and the current initial position of the position-limiting plate  131  to perform data processing, so as to generate a position parameter for adjusting the position-limiting plate  131  or the locating tooth  1322  and a drive parameter for driving the position-limiting motor  133 . 
         [0050]    4) The central control module  210  controls the execution module to generate servo signal for the execution elements according to the drive parameter from the data processing module  250 , so as to drive the position-limiting motor  133  to rotate, and further adjust the upward or downward movement of the position-limiting plate  131 . 
         [0051]    Taking the banknotes having a width of 85 mm as an example, the controller  200  controls the position-limiting motor  133  to rotate, so as to drive the position-limiting plate  131  to move such as to be 88 mm apart from the bottom face of the banknote stacking shelf  124 . 
         [0052]    5) Central control module  210  also controls the counting sensor of the detection module  230  to monitor the number of the banknotes on the banknote stacking shelf  124 . When a certain number of banknotes have been stacked, for example 10 pieces, the central control module  210  controls the execution module  260  to drive the position-limiting motor  133  to rotate. As such, the position-limiting plate  131  is driven to press the banknotes downwards until causing an interference of 2 mm with respect to the banknotes, and then returns, thereby arranging the short edges of the banknotes. 
         [0053]    6) The central control module  210  also controls the counting sensor of the detection module  230  to monitor the number of the banknotes on the banknote stacking shelf  124 . When a certain number of banknotes have been stacked, for example 100 pieces, the central control module  210  controls the execution module  260  to drive the position-limiting motor  133  to rotate. As such, the position-limiting plate  131  is driven to press the banknotes downwards until causing an interference of 2 mm with respect to the banknotes, and then returns. Then, the banknote stacking shelf  124  is further driven to bring the whole stack of the banknotes to move downwards, and to send the banknotes to a clamping mechanism (not shown) which sends the banknotes to a bundling mechanism for being bundled. 
         [0054]    As compared with the techniques in the prior art, according to the banknote stacking and arranging system in the present application, the controller controls the banknote stacking and arranging device to press the edges of the banknotes and arrange the banknotes automatically and periodically. Different locating and arranging functions may be implemented according to different banknote specifications. The stacking and arranging system and the stacking and arranging device according to the present application are applicable for stacking and arranging other sheet mediums in addition to banknotes. 
         [0055]    The present application is not limited to the above embodiments. If various variations or modifications to the present application do not depart from the spirit and scope of the present application, and if these variations and modifications fall within the scope of the claims and equivalent techniques of the present application, it is intended that the present application includes those variations and modifications.