Abstract:
A multifunctional stand for a communication terminal comprises: a front case ( 110 ); a rear case ( 120 ); a swing hinge ( 130 ) having one side fastened to the front case ( 110 ); a rotating body ( 140 ) which rotates by being fastened to the other side of the swing hinge ( 130 ); a supporter ( 151 ), provided on the rotating body ( 140 ), for supporting a communication terminal ( 10 ); a pair of holders ( 161, 162 ), provided on the rotating body ( 140 ), for holding the communication terminal ( 10 ); and a speaker box ( 198 ), provided on the rear surface of the rear case ( 120 ), for standing the stand ( 100 ) on an object on which the stand will be disposed, wherein the pair of holders ( 161, 162 ) hold the communication terminal ( 10 ) by controlling the distance between the holders ( 161, 162 ) by moving according to the width (w 1 ) of the communication terminal ( 10 ).

Description:
BACKGROUND 
       [0001]    The present invention relates to a multi-functional stand for a communication terminal and, more particularly, to a multi-functional stand for a communication terminal, which has been adapted to hold a communication terminal easily and conveniently regardless of the size of the communication terminal in a non-electric motion manner and to release a held communication terminal rapidly and conveniently in a non-electric motion manner. 
         [0002]    With the recent development of a communication technology and multimedia technology, mobile functions having different environments, such as an image and music, rather than a simple communication technology, are collaborated into a communication terminal, and thus various applications are used in one terminal. 
         [0003]    Today, roles, such as the Internet, life information and a messenger, and functions, such as navigation, moving images, music and photos, on the basis of a call are grafted onto a wireless communication technology to implement a more human-oriented function. 
         [0004]    A conventional technology had a problem in that there is a burden on space utilization and the price because a Bluetooth speaker, a stand for a vehicle and a hands-free function were separately configured. 
         [0005]    Furthermore, a conventional stand for a communication terminal can be held only in any one of a vertical direction and a horizontal direction. Accordingly, if the conventional stand for a communication terminal is held in the vertical direction for a call purpose, it is inconvenient to watch an application for basic horizontal watching, such as a moving image or TV. 
         [0006]    Furthermore, the conventional stand for a communication terminal had a lot of inconvenience in an operation for holding the side of a communication terminal and an operation for releasing a held terminal. 
         [0007]    Prior Art Document 1: Korean Patent No. 10-1020434 (issued on Mar. 9, 2011) 
         [0008]    Prior Art Document 2: Korean Patent Application Publication 
         [0009]    No. 10-2013-0115313 (laid open on Oct. 21, 2013). 
       SUMMARY OF THE INVENTION 
       [0010]    The present invention has been invented to solve the problems of the conventional technology, and an object of a multi-functional stand for a communication terminal according to the present invention is to provide a multi-functional stand for a communication terminal which is adapted to: 
         [0011]    first, stand a communication terminal regardless of the size of the communication terminal, 
         [0012]    second, firmly hold a communication terminal through a simple configuration, 
         [0013]    third, allow a pair of holders to fasten or widen a communication terminal at the same time in such a manner that when one of the pair of holder moves, the other holder also moves at the same time and thus allow the holding operation and holding release operation of the communication terminal by the holders to be performed rapidly and conveniently, 
         [0014]    fourth, release a held communication terminal rapidly and simply in a non-electric motion manner in such a way as to release the held communication terminal by outward widening the holders that hold the communication terminal by a simple operation of pressing a release button and thus provide a user with convenience in holding and release, 
         [0015]    fifth, closely attach and hold a communication terminal at the front of a rotating unit regardless of the thickness of the communication terminal by a simple action to backward push the communication terminal inserted into a charging terminal, 
         [0016]    sixth, mount a joint on a rear case easily and conveniently even in a narrow space, 
         [0017]    seventh, charge the battery of a communication terminal when the communication terminal is held in the stand and output voice and output audio signals output when an application, such as an image or music, is executed through a speaker box other than the communication terminal, 
         [0018]    eighth, improve space utilization of the place where the stand will be held (e.g., within a vehicle) by integrating and implementing functions, such as Bluetooth, an external speaker and a charger, into a single holding device, and 
         [0019]    ninth, hold a communication terminal at a required location in a horizontal direction or a vertical direction. 
       Technical Solution 
       [0020]    A multi-functional stand for a communication terminal according to the present invention for achieving the above object includes a front case; a rear case coupled to the front case; a swing hinge comprising a fixing part and a rotational part rotating forward or backward at an angle set in the fixing part, wherein the fixing part is fixed to the front case; a rotating unit fixed to the rotational part of the swing hinge and rotating in response to the rotation of the rotational part; a support protruded on the lower side of the front surface of the rotating unit and rotated along with the rotating unit, wherein the support supports a communication terminal; a pair of holders upward spaced apart the support and provided in a front surface of the rotating unit, wherein the pair of holders rotates along with the rotating unit and holds the communication terminal supported by the support; a speaker box coupled to a rear surface of the rear case, supporting the front case and the rear case so that an object on which the stand is to be disposed is upright, and outputting an audio signal output by the communication terminal, wherein the pair of holders moves inward or outward along the width of the communication terminal and holds the communication terminal by adjusting a distance between the pair of holders. 
       Advantageous Effects 
       [0021]    The multi-functional stand for a communication terminal according to the present invention having the above configuration has the following effects. 
         [0022]    First, a communication terminal can be held regardless of the size of the communication terminal. 
         [0023]    Second, a communication terminal can be firmly held through a simple configuration including a first elastic member and holder stop means. 
         [0024]    Third, when one of the pair of holder moves, the other holder also moves at the same time, and thus the holding operation and holding release operation of a communication terminal can be performed rapidly and conveniently. 
         [0025]    Fourth, the holding of a communication terminal can be released rapidly and simply in a non-electric motion manner by a simple operation of pressing a release button. 
         [0026]    Fifth, a communication terminal can be closely attached and held at the front of the rotating unit regardless of the thickness of the communication terminal by a simple action to backward push the communication terminal inserted into a charging terminal. Accordingly, the holding of the communication terminal can be further stabilized. 
         [0027]    Sixth, a joint can be mounted on the rear case easily and conveniently even in a narrow space. 
         [0028]    Seventh, the battery of a communication terminal can be charged when the communication terminal is held in the stand, and voice and audio signals output when an application, such as an image or music, is executed can be output through the speaker box other than the communication terminal. 
         [0029]    Eighth, space utilization of the place where the stand will be held (e.g., within a vehicle) can be improved by integrating and implementing functions, such as Bluetooth, an external speaker and a charger, into a single holding device. 
         [0030]    Ninth, a communication terminal can be held at a required location in a horizontal direction or a vertical direction. 
     
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         [0031]      FIG. 1  is a perspective view of a multi-functional stand for a communication terminal according to an embodiment of the present invention and an exemplary diagram showing the state in which the multi-functional stand is used. 
           [0032]      FIG. 2  is a rear view of the multi-functional stand for a communication terminal according to an embodiment of the present invention. 
           [0033]      FIG. 3  is an exploded perspective view showing major elements of the multi-functional stand for a communication terminal according to an embodiment of the present invention. 
           [0034]      FIG. 4  is an exploded perspective view of a front case  110  and a rotating unit  140  in  FIG. 3 . 
           [0035]      FIG. 5  is a rear-perspective view of the state in which a swing hinge  130  has been mounted on a rotating unit body  140 ′ in  FIG. 4 . 
           [0036]      FIG. 6  is an exploded perspective view of major elements mounted on a rotating unit cover  140 ″ in  FIG. 4 . 
           [0037]      FIG. 7  is a rear perspective view of the rotating unit cover  140 ″ in  FIG. 4 . 
           [0038]      FIG. 8  is a cutaway rear view illustrating part of the inside of the figure disclosed in  FIG. 7 . 
           [0039]      FIG. 9  is a diagram for illustrating a connection relation between holders  161  and  162  and a guide member  171  in  FIG. 6 . 
           [0040]      FIG. 10  is a diagram for illustrating an operation relation between a release button  167  and a stopper  165  in  FIG. 6 . 
           [0041]      FIG. 11  is an exploded perspective view showing the state in which a joint  180  has been separated in  FIG. 2  and is a front view of the joint. 
           [0042]      FIG. 12  is a front perspective view of a rear case  120  showing the state in which the rear case has been mounted on a speaker box  198  in  FIG. 3 . 
           [0043]      FIG. 13  is an exploded perspective view of the rear case  120  and the speaker box  198 . 
           [0044]      FIG. 14  is an operational diagram of the state in which the rotating unit  140  has been counterclockwise turned 90° and a communication terminal  10  has been horizontally held in the state in which the communication terminal  10  has been supported by the support  151  and held by holders  161  and  162  in  FIG. 1 . 
           [0045]      FIG. 15  is an operational diagram of the state in which the holders  161  and  162  have inward moved in the state of  FIG. 1 . 
           [0046]      FIG. 16  is a side view of the state in which the communication terminal  10  having a thin thickness has been held. 
           [0047]      FIG. 17  is an operational diagram showing that the communication terminal  10  is pushed and closely attached to a nonslip member R 1 . 
           [0048]      FIG. 18  is a cross-sectional view of major elements for illustrating the state in which a terminal rotation shaft  193  has been installed in the multi-functional stand for a communication terminal according to an embodiment of the present invention. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0049]    Hereinafter, a preferred embodiment of a multi-functional stand for a communication terminal according to the present invention is described in detail with reference to the accompanying drawings. 
         [0050]    In this specification, “forward” is the direction in which a held communication terminal  10  is oriented, and “backward” is a direction opposite the forward. “Inward” is the direction in which a pair of holders  161  and  162  gathers at the center of a rotating unit  140 , that is, the direction headed for the center of the rotating unit  140 . “Outward” is the direction in which the pair of holders  161  and  162  becomes distant from each other. 
         [0051]    As shown, a multi-functional stand  100  for a communication terminal according to an embodiment of the present invention is configured to include a front case  110 , a rear case  120  coupled to the front case  110 , a swing hinge  130 , the rotating unit  140 , a support  151 , the pair of holders  161  and  162  and a speaker box  198 . 
         [0052]    A plurality of parts including a PCB M 1  on which various circuit elements are to be mounted is provided in the space formed by the coupling of the front case  110  and the rear case  120 . 
         [0053]    A shaft hole  111  has been backward inserted at the center of the front case  110 . 
         [0054]    A bottom part  110   a  in which the rotating unit  140  of a disk form is to be seated and a circumference part  110   b  formed concentrically with the shaft hole  111  have been formed in the front case  110 . 
         [0055]    The swing hinge  130  includes a fixing part  131  and a rotational part  132  that rotates forward (counterclockwise) or backward (clockwise) at an angle set in the fixing part  131 . The fixing part  131  has been fixed to the front case  110 , and the rotational part  132  has been fixed to the rotating unit  140 . 
         [0056]    The swing hinge  130  operates semi-automatically. When a user turns the swing hinge at a critical angle (e.g., 45°) or more by his or her hand, a force is applied to the rotational part  132  by the action of a cam embedded in the swing hinge when the critical angle is exceeded, and thus the swing hinge is forward turned 90°. 
         [0057]    The rotating unit  140  is fixed to the rotational part  132  of the swing hinge  130  and rotates in response to the rotation of the rotational part  132 . 
         [0058]    A shaft projection  141  has been backward protruded and formed in the rear surface  140   b  of the rotating unit  140  in such a way as to be rotatably inserted into the shaft hole  111 . The rotating unit  140  has a disk form formed concentrically with the shaft projection  141 . 
         [0059]    The rotating unit  140  includes a rotating unit body  140 ′ and a rotating unit cover  140 ″ covering the rotating unit body  140 ′. In this case, the rear surface  140   b  of the rotating unit body  140 ′ becomes the rear surface  140   b  of the rotating unit, and the front surface  140   a  of the rotating unit cover  140 ″ becomes the front surface  140   a  of the rotating unit  140 . 
         [0060]    Furthermore, a pair of openings  143  formed to penetrate the rotating unit cover  140 ″ forward and backward has been formed in the rotating unit cover  140 ″. 
         [0061]    A nonslip member R 1  has been formed in the front surface  140   a  of the rotating unit  140 , thus preventing the communication terminal  10  from sliding. The nonslip member R 1  may be implemented using a material, such as rubber or soft synthetic resin, for example. 
         [0062]    The support  151  has been forward protruded and formed on the lower side of the front surface  140   a  of the rotating unit  140 , and rotates along with the rotating unit  140  while supporting the communication terminal  10 . 
         [0063]    The pair of holders  161  and  162  is upward spaced apart the support  151  and provided in the front surface  140   a  of the rotating unit  140 . The pair of holders  161  and  162  rotates along with the rotating unit  140  and holds both sides of the communication terminal  10  supported by the support  151 . 
         [0064]    The pair of holders  161  and  162  moves inward or outward along the width w 1  of the communication terminal  10  and holds the communication terminal  10 . 
         [0065]    The holders  161  and  162  include holder bodies  161   a  and  162   a  and handle parts  161   b  and  162   b  which are curved from the holder bodies  161   a  and  162   a,  which are exposed through the openings  143 , and which apply an external force when the handle parts  161   b  and  162   b  are held by a user. 
         [0066]    The speaker box  198  is coupled to the rear surface of the rear case  120 . The speaker box  198  supports the front case  110  and the rear case  120  so that they are upright on an object on which the stand will be disposed (e.g., a dashboard for a vehicle), and outputs voice signal and an audio signal output by the communication terminal  10 . 
         [0067]    A fitting hole  198   a  has been formed on the front side of the speaker box  198 . A fitting projection  123  has been backward protruded in the rear surface of the rear case  120 , so the speaker box  198  is fitted into the rear case  120 . 
         [0068]    Accordingly, the speaker box  198  can be easily coupled to the rear case  120  or the coupling of the speaker box  198  can be easily released from the rear case  120 . 
         [0069]    The multi-functional stand  100  for a communication terminal according to an embodiment of the present invention is configured to further include a guide member  171 . 
         [0070]    The guide member  171  is disposed within the rotating unit  140 , and includes an upper guide face  171   a  and a lower guide face  171   a ′ for guiding the pair of holders  161  and  162  so that the pair of holders  161  and  162  inward gathers or outward widens. 
         [0071]    In order to mount the guide member  171  on the rotating unit cover  140 ″, an upper mounting unit  171   c  of a plate form has been upward curved from the upper guide face  171   a  and formed in the guide member  171  and a lower mounting unit  171   c ′ of a plate form has been downward curved from the lower guide face  171   a ′ and formed in the guide member  171 . 
         [0072]    Furthermore, gear exposure holes  171   d  have been formed in the upper mounting unit  171   c  and the lower mounting unit  171   c ′ so that first and second rack gears  163   a  and  163   b  and gears  173   a,    173   b  and  173   c  are smoothly engaged even in a narrow space. 
         [0073]    Furthermore, in accordance with an embodiment of the present invention, a pair of slide surfaces  161   a ′ and  161   a ″ and a pair of slide surfaces  162   a ′ and  162   a ″ have been curved toward the guide member  171  and formed on the upper and lower sides of the holder bodies  161   a  and  162   a  so that the holders  161  and  162  perform a linear motion while being guided by the upper guide face  171   a  and the lower guide face  171   a′.    
         [0074]    In the multi-functional stand  100  for a communication terminal according to an embodiment of the present invention, the guide member  171  is configured to further include first elastic members k 1  and k 2  and holder stop means  164 ,  165  and  166 . 
         [0075]    The first elastic member k 1 , k 2  has one end elastically supported by an elastic support unit  161   c,    162   c  formed in the holder  161 ,  162 , and has the other end elastically supported by an elastic support piece  171   b,    171   b ′ outward protruded from the upper and lower guide face  171   a,    171   a ′ of the guide member  171 . Accordingly, the first elastic member k 1 , k 2  applies an outward elastic force to the holder  161 ,  162 . 
         [0076]    The holder stop means  164 ,  165  and  166  are elements which can inward move the holders  161  and  162  while compressing the first elastic members k 1  and k 2 , but stop the outward movement of the holders  161  and  162  when an inward external force is applied to the holders  161  and  162  and stop the holders  161  and  162  at their positions when the external force applied to the holders  161  and  162  is removed. 
         [0077]    The holder stop means  164 ,  165  and  166  include first sawteeth  164 , a stopper  165  and a second elastic member  166 . 
         [0078]    The first sawteeth  164  are formed in a right-angled triangle pattern which has been inward inclined from the bottom of the slide surface  161   a ″ of one holder  161  of the pair of holders  161  and  162 . 
         [0079]    Meanwhile, the first sawteeth  164  are also formed in the other holder  162 , but the same product can be produced and assembled regardless of the left and right. 
         [0080]    The stopper  165  is disposed in the guide member  171  [more specifically, the lower mounting unit  171   c ′ of the guide member  171 ] so that the stopper performs a lever action using a shaft pin  165   a  as an axis. Second sawteeth  165   b  engaged with the first sawteeth  164  are formed on the other side of the stopper  165 , and thus the stopper  165  stops the first sawteeth  164  so that it can move inward, but do not move outward. 
         [0081]    Furthermore, a first incline  165   c  is formed on one side of the stopper  165 . 
         [0082]    The second elastic member  166  has a bottom elastically supported by an elastic support  166   a  formed in the rotating unit cover  140 ″ and has a top elastically supported by the other side of the stopper  165 . Accordingly, the second elastic member  166  applies an elastic force to the other side of the stopper  165 . 
         [0083]    The multi-functional stand  100  for a communication terminal according to an embodiment of the present invention is configured to further include a release button  167  and a third elastic member  168 . 
         [0084]    A second incline  167   a  inclined at a tilt angle corresponding to the first incline  165   c  so that the second incline comes into surface contact with the first incline  165   c  has been formed in the release button  167 . When a user presses the release button  167  in order to outward move the holders  161  and  162  by the elastic restoring force of the first elastic members k 1  and k 2 , the release button  167  pushes one side of the stopper  165  upward and drops the other side of the stopper  165  downward by a lever action at the same time. Accordingly, the release button  167  releases locking (engagement) between the second sawteeth  165   b  and the first sawteeth  164 . 
         [0085]    When the release button  167  is pressed, locking is released and thus the holders  161  and  162  automatically widen outward by the elastic force of the first elastic members k 1  and k 2 . 
         [0086]    Furthermore, when the pressing of the release button  167  is released after the release button  167  is pressed, the release button  167  returns to its original position. At this time, the first and the second inclines  165   c  and  167   a  are closely attached. 
         [0087]    The third elastic member  168  has one end elastically supported by the release button  167  and the other end elastically supported by the lower mounting unit  171   c ′ of the guide member  171  so that the release button  167  can return to its original position after the release button  167  is pressed. 
         [0088]    The multi-functional stand  100  for a communication terminal according to an embodiment of the present invention is configured to further include interlocking means  163   a,    163   b ,  173   a,    173   b  and  173   c.    
         [0089]    When one holder  161  of the pair of holders  161  and  162  moves inward or outward, the interlocking means  163   a,    163   b ,  173   a,    173   b  and  173   c  move the other holder  162  in the same inward or outward direction while operating in conjunction with the one holder  161  so that the pair of holders  161  and  162  gathers or widens by driving the pair of holders  161  and  162  at the same time. 
         [0090]    The interlocking means  163   a,    163   b,    173   a,    173   b  and  173   c  include the first and the second rack gears  163   a  and  163   b  and the plurality of gears  173   a,    173   b  and  173   c.    
         [0091]    The first and the second rack gears  163   a  and  163   b  are stepwise formed from the slide surfaces  161   a ″ and  162   a ′ in which the first sawteeth  164  of the holders  161  and  162  have been formed to the back and are formed toward the slide surfaces  161   a ′ and  162   a ″ that face the first and the second rack gears  163   a  and  163   b.    
         [0092]    The plurality of gears  173   a,    173   b  and  173   c  is engaged with the first rack gear  163   a  formed in one holder  161  and the second rack gear  163   b  formed in the other holder  162 . When the first rack gear  163   a  of one holder  161  moves inward or outward, the plurality of gears  173   a,    173   b  and  173   c  moves the other holder  162  in the same direction as the first rack gear  163   a  so that the pair of holders  161  and  162  gathers or widens at the same time. 
         [0093]    In accordance with the configuration, although any one of the pair of holders  161  and  162  is pushed or pulled, the pair of holders  161  and  162  operates inward or outward at the same time. 
         [0094]    That is, although only one holder is pushed, the pair of holders  161  and  162  move inward at the same time. When the release button  167  is pressed, the pair of holders  161  and  162  widens symmetrically at the same time. 
         [0095]    It is preferred that the gears  173   a,    173   b  and  173   c  include a first pinion gear  173   a,  a driven gear  173   c  and a second pinion gear  173   b.  Accordingly, a motion direction can be changed by a simple configuration. 
         [0096]    The first pinion gear  173   a  performs a rotary motion in response to a linear movement of the first rack gear  163   a.  The driven gear  173   c  rotates in the opposite direction in response to the rotation of the first pinion gear  173   a.  When the driven gear  173   c  rotates, the second pinion gear  173   b  rotates in the same direction as the first pinion gear  173   a.  When the second pinion gear  173   b  rotates, the second rack gear  163   b  linearly moves inward or outward linear like the first rack gear  163   a.    
         [0097]    In the multi-functional stand  100  for a communication terminal according to an embodiment of the present invention, a charging terminal  191  for supplying a charging current to the communication terminal  10  held in the support  151  has been protruded and provided in the support  151 . 
         [0098]    When the communication terminal  10  is connected to the charging terminal  191 , the charging terminal  191  can supply a charging current to the communication terminal  10  through an external input terminal (not shown) connected to an external input port  195 . Reference numeral  196  is a USB port  196  to which a USB jack  197  can be connected. 
         [0099]    The multi-functional stand  100  for a communication terminal according to an embodiment of the present invention is configured to further include a locking hole  151   b,  a pair of bosses  152 , a terminal housing  192  and a terminal rotation shaft  193 . 
         [0100]    The locking hole  151   b  is an element formed at the center of the top surface  151   a  of the support  151 . The pair of bosses  152  is formed in the support  151  to face each other in a plate form. 
         [0101]    A hollow part  192   a  has been formed within the terminal housing  192 . Accordingly, the charging terminal  191  can be inserted into the hollow part  192   a.  A locking piece  192   b  locked and fixed to the locking hole  151   b  of the support  151  has been formed in the terminal housing  192 . 
         [0102]    In order to rotatably move the charging terminal  191  inserted into the terminal housing  192  forward or backward, the terminal rotation shaft  193  is laterally protruded from the outer circumferential surface of the terminal housing  192  and rotatably provided in the pair of bosses  152 . 
         [0103]    In accordance with the elements, the communication terminal  10  can be closely attached to the nonslip member R 1  [accordingly, the front surface  140   a  of the rotating unit  140 ] regardless of the thickness of the communication terminal  10 . 
         [0104]    In the multi-functional stand  100  for a communication terminal according to an embodiment of the present invention, a mounting hole  121  has been formed in the rear surface of the rear case  120  and a plurality of locking hooks  122  has been formed in the inner circumferential surface of the mounting hole  121  at equal intervals. 
         [0105]    Furthermore, the multi-functional stand  100  for a communication terminal according to an embodiment of the present invention is configured to further include a joint  180  in which locking stops  181  locked and fixed to the locking hooks  122  have been outward protruded in a radial direction in order to connect the multi-functional stand  100  for a communication terminal to an external instrument (not shown). 
         [0106]    Accordingly, there is an advantage in that an attachment or detachment task can be easily performed even in a narrow space, such as a dashboard for a vehicle, because the joint  180  can be attached or detached from the stand  100  in a rotary manner according to the present invention. 
         [0107]    The multi-functional stand  100  for a communication terminal according to an embodiment of the present invention is configured to further include guide rails  112  and a stop projection  142 . 
         [0108]    The guide rails  112  are elements spaced apart from the shaft hole  111  and inserted into the bottom part  110   a  of the front case  110  in an arc form concentric with the shaft hole  111 . 
         [0109]    A pair of the guide rails  112  has been illustrated in the figure, but this is for convenience of an assembly task. Only one guide rail is sufficient. 
         [0110]    The stop projection  142  is an element which has been backward protruded from the rear surface  140   b  of the rotating unit  140  in such a way as to be inserted into the guide rail  112  and to rotate along the guide rail  112  and which prevents the rotating unit  140  from rotating at a set angle or more when the communication terminal  10  rotates (forward rotates) from a vertical direction to a horizontal direction or rotates backward. 
         [0111]    Furthermore, a call button key (not shown) connected to a control board M 1  and provided on one side of the rear case is further included. When a call button key is pressed, the control board M 1  control the output of an audio signal so that a voice or an audio signal output by the communication terminal  10  is output through the speaker box  198  other than the speaker of the communication terminal  10  itself. 
         [0112]    In the multi-functional stand  100  for a communication terminal according to an embodiment of the present invention, a volume switch (not shown) is provided on one side of the front case  110 . 
         [0113]    The operation of the multi-functional stand  100  for a communication terminal having the above configuration according to an embodiment of the present invention is described below. 
         [0114]    An operation for holding the communication terminal  10  by the holders  161  and  162  is first described below. 
         [0115]    At the beginning, the first sawteeth  164  and the second sawteeth  165   b  have been engaged and the second elastic member  166  applies an elastic force to the other side of the stopper  165 . Accordingly, the holders  161  and  162  are stopped at their positions unless an external force is applied. 
         [0116]    In the state disclosed in  FIG. 1 , when one holder  161  is inward pressed, the first sawteeth  164  climbs up the second sawteeth  165   b  of the stopper  165  along a diagonal line (the hypotenuse of a right-angled triangle pattern) and thus one holder  161  moves inward. 
         [0117]    At this time, an operation of the first sawteeth  164  being engaged with the second sawteeth  165   b  after the first sawteeth  164  climbs up the second sawteeth  165   b  is repeated because the second elastic member  166  pushes the other side of the stopper  165 . Accordingly, one holder  161  moves inward. 
         [0118]    When one holder  161  is inward pushed as described above, the other holder  162  moves in the same inward direction while operating in conjunction with one holder  161 , and thus the pair of holders  161  and  162  inward operates at the same time. Such a simultaneous operation is described below. 
         [0119]    When one holder  161  is pushed, the first rack gear  163   a  moves inward and the first pinion gear  173   a  performs a rotary motion counterclockwise in response to the inward linear movement of the first rack gear  163   a.  When the first pinion gear  173   a  rotates, the driven gear  173   c  rotates clockwise. When the driven gear  173   c  rotates, the second pinion gear  173   b  rotates counterclockwise. When the second pinion gear  173   b  rotates, the second rack gear  163   b  performs a linear movement inward like the first rack gear  163   a.  The other holder  162  moves inward in response to the inward linear movement of the second rack gear  163   b.    
         [0120]    Accordingly, when one holder  161  is inward pushed, the other holder  162  also moves inward (refer to  FIG. 15 ) according to the above operation relation. If the communication terminal  10  has been held in the stand, the pair of holders  161  and  162  strongly holds the held communication terminal  10  by fastening the held communication terminal  10 . 
         [0121]    An operation for releasing the holding of a communication terminal in order to separate the communication terminal from the stand after the communication terminal is held as described above is described below. 
         [0122]    When the release button  167  is pressed, the second incline  167   a  pushes the first incline  165   c  upward. When the first incline  165   c  upward rises, one side of the stopper  165  including the first incline  165   c  upward rises. When one side of the stopper  165  upward rises, the other side of the stopper  165  descends downward by a lever action on the basis of the shaft pin  165   a.    
         [0123]    When the other side of the stopper  165  descends downward, the second sawteeth  165   b  is separated from the first sawteeth  164  and thus the engagement between the second sawteeth  165   b  and the first sawteeth  164  is released. When the locking of the second sawteeth  165   b  that stops the first sawteeth  164  is released, the holder  161  moves outward because the elastic restoring force of the first elastic members k 1  and k 2  is outward applied to the holder  161 . 
         [0124]    When the holder  161  moves outward by the elastic restoring force of the first elastic members k 1  and k 2 , the first rack gear  163   a  performs an outward linear movement. Thereafter, the first pinion gear  173   a,  the driven gear  173   c  and the second pinion gear  173   b  rotate. When the second pinion gear  173   b  rotates, the second rack gear  163   b  performs an outward linear movement. Finally, the holder  162  moves outward. 
         [0125]    Accordingly, as the pair of holders  161  and  162  is outward widened at the same time, the holding of the communication terminal  10  is released. 
         [0126]    When the press action of the release button  167  is stopped in the state in which the holding of the communication terminal  10  has been released, the release button  167  returns to the front by the restoring force of the third elastic member  168 , the first incline  165   c  climbs down the second incline  167   a,  and one end of the stopper  165  descends again. At the same time, the other end of the stopper  165  ascends. Accordingly, the second sawteeth  165   b  is engaged with the first sawteeth  164 , thereby stopping the first rack gear  163   a.    
         [0127]    When the first rack gear  163   a  is stopped, the moving of the pair of holders  161  and  162  is stopped. 
         [0128]    An operation for closely attaching the communication terminal  10  to the front surface of the rotating unit  140  along the nonslip member R 1  if the thickness of the communication terminal  10  has been changed is described below. 
         [0129]    As shown in  FIG. 16 , if the communication terminal  10  does not come into contact with the nonslip member R 1  because it has a small thickness, when the upper side of the communication terminal  10  is pushed backward, the charging terminal  191  rotates backward using the terminal rotation shaft  193  as an axis, and thus the communication terminal  10  is closely attached to the nonslip member R 1  (refer to  FIG. 17 ). 
         [0130]    An operation for rotating the communication terminal  10  in a horizontal direction in order to view a movie, navigation or a moving image through the Internet in the state in which the communication terminal  10  has been initially located in a vertical direction as in  FIG. 1  is described below. 
         [0131]    When a user rotates the rotating unit  140  forward up to a critical angle by applying an initial force to the communication terminal  10  in order to rotate the rotating unit  140  in the horizontal direction, the rotational part  132  automatically rotates by the action of the internal cam at the critical angle, and thus the rotating unit  140  is further rotated forward. 
         [0132]    When the rotating unit  140  continues to rotate counterclockwise and the communication terminal  10  is rotated 90° and placed in the horizontal direction (refer to  FIG. 14 ), the stop projection  142  is stopped at one end of the guide rail  112  and thus the rotation of the rotating unit  140  is stopped. 
         [0133]    Furthermore, as shown in  FIG. 14 , an operation for returning the communication terminal  10  placed in the horizontal direction to the vertical direction again is opposite the above operation. 
         [0134]    When a user rotates the rotating unit  140  backward up to a critical angle by applying an initial force to the communication terminal  10 , the rotational part  132  automatically rotates by the action of the internal cam at the critical angle and thus the rotating unit  140  further rotates backward. When the rotating unit  140  continues to rotate clockwise and thus the communication terminal  10  is placed in the vertical direction of 0° (refer to  FIG. 1 ), the stop projection  142  is stopped at the other end of the guide rail  112  and thus the rotation of the rotating unit  140  is stopped. 
         [0135]    The preferred embodiments according to the present invention have been described above. It will be apparent to those skilled in the art that the present invention may be implemented in other specific forms without departing from the object or scope of the invention in addition to the aforementioned embodiments. 
         [0136]    Accordingly, the aforementioned embodiments should not be construed as being restrictive, but should be construed as being illustrative and therefore the present invention is not limited to the above description and may be modified within the scope of the appended claims and equivalents thereof.