Abstract:
Disclosed is an apparatus for adjusting a bicycle saddle angle in a seated position while driving, which enables a user on a bicycle saddle mounted on a bicycle to adjust an angle of the bicycle saddle with a simple operation according to a riding and driving state, or the user&#39;s needs. The apparatus according to the present invention comprises: a mount ( 100 ) of which the lower portion is slidable upward and downward through the upper portion of a saddle frame ( 10   a ) and of which the upper portion is in a first fork ( 110 ) shape and has a first hinge pin ( 114 ) penetrating the centers of the upper end portions thereof; a supporter ( 116 ) of which the lower portion is in a second fork ( 120 ) shape and has a second hinge pin ( 122 ) penetrating the centers of the lower end portions thereof and of which the upper side is connected between the upper end portions of the first fork ( 110 ) shaped portion by the first hinge pin ( 114 ); and an actuator ( 200 ) fixed with a bracket ( 210 ) to be spaced apart from one side of the mount ( 100 ) and having an expandably-driven portion connected to the second hinge pin ( 122 ) on the corresponding position, wherein a saddle ( 22 ) of a bicycle is fixed to the upper end of the supporter ( 116 ), and the angle of the saddle ( 22 ) is adjusted, about the first hinge pin ( 114 ), according to the movement of the supporter ( 116 ) resulting from the operation of the actuator ( 200 ).

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is the U.S. National Phase under 35 U.S.C. §371 of International Application No. PCT/KR2013/010915, filed on Nov. 28, 2013, which in turn claims the benefit of Korean Application No. 10-2013-0029120, filed on Mar. 19, 2015, Korean Application No. 10-2013-0029121, filed on Mar. 19, 2015, and Korean Application No. 10-2013-0090931, filed on Jul. 31, 2013, the disclosures of which are incorporated by reference into the present application. 
     TECHNICAL FIELD 
     The present invention relates to an apparatus for adjusting a bicycle saddle angle, and in particular to an apparatus for adjusting a bicycle saddle angle in a seated position while driving which makes it possible to easily adjust a bicycle saddle angle in a state where a rider remains seated on a saddle or while a rider is riding or a rider needs to. 
     BACKGROUND ART 
     In general, a bicycle is designed to move forward by driving the wheels with the force from two legs in a state where a rider is seated on a saddle. The pedals are alternately stepped down with two feet with a rider on the saddle holding a handle to rotate the wheels connected through a chain. 
     The wheels in general are provided in pair. In rare case, there may be only one wheel or three wheels. Such a bicycle has been widely used as one of major transportation means which are driven by manpower. In recent years, the bicycle is being applied for various purposes as a recreation means while providing a health promotion effect as an exercise tool, and needs for the same increases thanks to its environment friendly characteristics. 
     As illustrated in  FIG. 1 , the bicycle is configured in such a way that a plurality of frames  10   a  to  10   g  are connected in a trust structure. There are provided sprocket wheels  17   a  and  17   b , a chain  19 , etc. which are able to transfer a driving force which generates by front and rear wheels  12   a  and  12   b , a handle bar  14 , a saddle  22 , pedals  18  and an arm  16 , to a rear wheel  12   b , the operation of which is based on the supporters of the above-mentioned frames  10   a  to  10   g.    
     At this time, the height of the saddle  22  can be adjusted through a saddle supporter  20  on the top of a saddle frame  10   a  supported by a main shaft frame  10   b  and a support frame  10   f  which are among the plurality of the frames  10   a  to  10   g.    
     As illustrated in  FIG. 2 , the height adjustment of the conventional saddle  22  may be obtained by an engaging force of a fixing screw  24  provided at a side portion of the saddle frame  10   a  in a state where the bottom of the saddle supporter  20  is inserted into the top of the pipe-shaped saddle frame  10   a.    
     In addition, a support  26  is fixed at the top of the saddle supporter  20  by a conventional method, for example, a welding method, etc., and a saddle plate  28  forming a frame of the saddle  22  is installed on the support plate  26 . 
     As seen in the installation structure of the conventional saddle  22 , a height adjustment in general is performed based on the engaging force of the fixing screw  24  with respect to the saddle frame  10   a.  The upward, downward direction angles of the saddle corresponds to a user&#39;s body type and a user&#39;s posture and habit when riding, and its adjustment is necessary, but there is a hard relationship for the adjustment. 
     In addition, many persons, for example, a family or colleagues, can use a bicycle together. At this time, a lot of time may be necessary for each person to adjust the angle of the saddle  22  based on his body type, thus causing a lot of problems. 
     Furthermore, when riding a bicycle, since the angle of the saddle  22  cannot cope with any change in the user&#39;s posture when riding on a flat ground and a sloped road, for example, an uphill or a downhill, the user may have many inconveniences. 
     For example, when the user rides a bicycle on a uphill or a downhill, the user&#39;s posture tends to incline in a forward or backward direction of the bicycle. In this case, since the angle of the saddle  22  is fixed, the user may feel any inconvenience in his posture, thus causing a high risk to accident. 
     PRIOR ART TECHNICAL DOCUMENT 
     Patent Document 
     Korean Patent Publication No. 2009-0085900 (Aug. 10, 2009) 
     Korean Patent Publication No. 0981994 (Sep. 7, 2010) 
     DISCLOSURE OF INVENTION 
     Technical of Invention 
     Accordingly, the present invention is made to improve or resolve the above-mentioned problems. It is an object of the present invention to provide an apparatus for adjusting a bicycle saddle angle in a seated position while driving wherein the angle of a saddle can be easily adjusted based on a user&#39;s body type in a state where a user is riding a bicycle, and the apparatus can be compatible with a conventional bicycle structure, and while driving a bicycle on an inclined road, it is possible for a user to adjust in person the angle of a saddle based on any change in a user&#39;s posture due to the inclined road. 
     Solution to Problem 
     To achieve the above objects, there is provided an apparatus for adjusting a bicycle saddle angle in a seated position while driving, which may include, but is not limited to, a mount  100  which includes a first hinge pin the bottom of which is slidable upward and downward through the upper portion of a saddle frame  10   a , and the top of which connects a portion between them to the center of the top in a shape of a first fork  110 ; a supporter  116  which includes a second hinge pin  122  the bottom of which connects a portion between them to the center of the bottom in a shape of a second fork  120 , and the top of which is connected with the first hinge pin  114  and between the portions shaped like the first fork  100 ; and an actuator which is fixed with a bracket  210  to be spaced apart from one side of the mount  100 , wherein an extendable driving portion is connected to the second hinge pin  122  at a corresponding position, wherein a saddle  22  of the bicycle is fixed at the top of the supporter  116 , so the angle of the saddle  22  can be adjusted based on the rotation of the supporter  116  with the aid of a driving of the actuator  200  about the first hinge pin  114 . 
     At this time, the actuator  200  may include, but is not limited to, a hydraulic cylinder  220  which drives contractively the cylinder rod  222  hinged with the second hinge pin  122 ; a hydraulic circuit  250  which is connected communicating with the hydraulic cylinder  220  so as to change fluid; a motor  260  which is connected to the hydraulic circuit  250  and is configured to provide a pumping driving force with respect to the flow of fluid of the hydraulic cylinder  220  and the hydraulic circuit  250  based on a normal and reverse direction rotation as electric power is supplied; and a switch  270  which is configured to control of the supply of electric power with respect to a normal or reverse direction rotation and stop of the motor  260 . 
     In addition, a front end portion of the cylinder rod  222  further includes a connection member  240  hinged with the second hinge pin  122  to a longitudinal hole  230  having a predetermined length in upward and downward directions. 
     Also, the first hinge pin  114  and the second hinge pin  122  are disposed parallel with each other, and the bottom of the supporter  116  including the second hinge pin  122  is arranged rotatable about the first hinge pin  114 . 
     To achieve the above objects, there is provided an apparatus for adjusting a bicycle saddle angle in a seated position while driving, which may include, but is not limited to, a saddle supporter  116 ′ for supporting a saddle  22 ; a worm wheel  320  which is fixed at the bottom of a saddle supporter  116 ′; a worm shaft  330  which allows to rotate a worm wheel  320 ; a driving motor  340  which is configured to rotate in a normal and reverse rotation direction the worm shaft  330 ; and a housing  310  which is configured to accommodate the worm wheel  320  and the worm shaft  330  and is fixed at a mount  100  which is slidable upward and downward through the upper portion of a saddle frame  10   a.    
     In this case, the housing  310  is configured to accommodate the driving motor  340 . 
     In addition, the driving motor  340  is controlled to rotate in a normal or reverse rotation direction based on the operation of an operation switch “SW” installed at a handle bar  14 . 
     To achieve the above objects, there is provided an apparatus for adjusting a bicycle saddle angle in a seated position while driving, which may include, but is not limited to, a saddle supporter  116 ′ for supporting a saddle; a bracket  410  to which the saddle supporter  116 ′ is engaged rotatable, wherein the bracket  410  is supported by the mount  100  which is slidable upward and downward over the top of the saddle frame  10   a;  a wire  420  both ends of which are supported by the bracket  410 , the wire  420  being configured to connect the bracket  410  and the saddle supporter  116 ′ in order for the saddle supporter  116 ′ to be rotatable with respect to the bracket  410 ; and an operation switch “SW” to which the wire  420  is connected, thus pulling the wire  420  or removing the pulling of the wire  420 , thus allowing to adjust the angle of the saddle  22  in such a way to rotate the saddle supporter  116 ′ with respect to the bracket  410 . 
     At this time, both ends of the wire  420  are supported spaced apart from the bracket  410  with the saddle supporter  116 ′ being disposed between them, and the wire  420  forms a closed loop. 
     In addition, there may be further provided at least one guide roller  440   a ,  440   b  which is disposed at both sides of the bracket  410  with the saddle supporter  116 ′ being disposed between them, thus guiding the movement of the wire  420 ; and at least on direction changing roller  450   a ,  450   b  which is disposed at both sides of the wire  420  while corresponding to the guide rollers  440   a,    440   b , thus changing the moving direction of the wire  420 . 
     In addition, one end of the wire  420  is wound around the guide roller  440   a  of one side and the direction changing roller  450   a  of one side in a zigzag shape, and the other end of the wire  420  is wound around the guide roller  440   b  of the other side and the direction changing roller  450   b  of the other side in a zigzag shape. 
     In addition, the guide rollers  440   a ,  440   b  and the direction changing rollers  450   a ,  450   b  are provided multiple in number, and the guide rollers  440   a,    440   b  and the direction changing rollers  450   a ,  450   b  are arranged in the longitudinal direction of the saddle supporter  116 ′. 
     Advantageous Effects 
     In the apparatus for adjusting a bicycle saddle angle in a seated position while driving according to the present invention, a mount is installed at a saddle frame to adjust the height of a saddle like a conventional general type saddle supporter, and an actuator is installed on the mount, wherein the actuator is configured to adjust the angle of a saddle including a saddle and a support, whereupon the apparatus of the present invention can be used compatible with a conventional bicycle, and the angle of the saddle can be adjusted while driving based on a user&#39;s intention in such a way to perform a simple switch operation of the actuator, thus increasing a use convenience. 
     Since the angle of a saddle can be adjusted based on user&#39;s various body types, a user can ride a bicycle in a stable posture, and it is possible to have an effect on easily and freely adjusting the angle of a saddle based on a riding condition of a bicycle with smaller force in a seated position on the saddle. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG. 1  is an exemplary perspective view illustrating a conventional bicycle. 
         FIG. 2  is an exemplary partial cross sectional view illustrating a saddle structure in  FIG. 1 . 
         FIGS. 3 to 5  are exemplary partial cross sectional views illustrating an apparatus for adjusting a bicycle saddle angle in a seated position while driving according to a first exemplary embodiment of the present invention. 
         FIG. 6  is an exemplary front cross sectional view illustrating a connection relationship between a mount, a support and a cylinder rod so as to adjust a bicycle saddle angle according to a first exemplary embodiment of the present invention. 
         FIG. 7  is an exemplary side view illustrating an installation example of an apparatus for adjusting a bicycle saddle angle in a seated position while driving according to a second exemplary embodiment of the present invention. 
         FIG. 8  is a partially enlarged perspective view illustrating a saddle angle adjusting unit in  FIG. 7 . 
         FIG. 9  is a cross sectional view illustrating a major component in  FIG. 8 . 
         FIGS. 10 and 11  are exemplary use state cross sectional views illustrating an apparatus for adjusting a bicycle saddle angle according to a second exemplary embodiment of the present invention. 
         FIG. 12  is an exemplary side view illustrating an embodiment example of an apparatus for adjusting a bicycle saddle angle in a seated posture while driving according to a third exemplary embodiment of the present invention. 
         FIG. 13  is a cross sectional view illustrating a major component in  FIG. 12 . 
         FIGS. 14 and 15  are exemplary use state cross sectional views illustrating an apparatus for adjusting a bicycle saddle angle according to a third exemplary embodiment of the present invention. 
     
    
    
     DETAILED DESCRIPTION 
     The terms or words used in the present specification and claims should be interpreted as a meaning and concept corresponding to the technical concepts of the present invention based on the principle wherein the inventor can appropriately define the concept of the term so as to describe in the best way his invention, not being interpreted as limiting to conventional or dictionary meaning. 
     It should be understood that the configurations illustrated in the embodiment and drawing in the present specification is provided as an exemplary embodiment, not representing all the technical concepts of the present invention, so there may be various equivalents and modification which could be substituted at the time the present application is filed. 
     Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings. 
     [First Exemplary Embodiment] 
     The apparatus for adjusting a bicycle saddle angle according to an exemplary embodiment of the present invention, as illustrated in  FIGS. 3 to 6 , may include, but is not limited to, a mount  100  and an actuator  200 . 
     At this time, the mount  100  may include, but is not limited to, a first fork  110  having a first open part  112  (refer to  FIG. 6 ) the top of which is open in a U-shape, and a first hinge pin  114  which is inserted traversing the first open part  112  at the top of the first fork  110 . 
     In addition, the bottom of the first fork  110  is inserted slidable into the top of an saddle frame  10   a , so it can slide upward and downward and is fixed with a fixing screw  24 , whereupon the height thereof can be adjusted. 
     The bottom of the supporter  116  is inserted into the first open part  112 , and a part of the supporter  116  is fixedly hinged in place rotatable in the inside of the first open part  112  with the aid of the first hinge pin  114 . 
     At the bottom of the supporter  116 , there is formed a second fork  120  having a second open part  118  (refer to  FIG. 6 ) which is open in a ∩-shape, and the second fork  120  may include a second hinge pin  122  which is inserted traversing the second open part  118 . 
     It is obvious that the bottom of the mount  100  is installed corresponding to the saddle frame  10   a  and may change in shape based on the saddle frame  10   a , whereupon it is possible to estimate that the thicknesses of the top and bottom of the mount  100  may be formed different from each other, not limiting to the configuration in the drawings. 
     In addition, the first fork  110  and the second fork  120  are formed opposite in directions and same in shapes and include a first hinge pin  112  and a second hinge pin  122 , respectively. 
     In addition, the supporter  116  is basically disposed in parallel with the first fork  112  and between them, and a part of the length of the supporter  116  is hinged to the first hinge pin  112 , whereupon the bottom and top of the supporter  116  can rotate about the first hinge pin  112 . 
     Furthermore, the support plate  26  is fixed at a predetermined angle at the top of the supporter  116  so as to install the saddle  22 , and the saddle  22  including a saddle plate  28  is installed on the support plate  26  in a known way. 
     Meanwhile, the actuator  200  is fixed with a bracket  210  while being spaced apart from one side of the mount  100  wherein an extending and driving portion is connected to the second hinge pin  122  at a corresponding position, and the actuator  200  may include a hydraulic cylinder  220  which is installed to correspond to the direction where the bottom of the supporter  116  rotates, with the aid of the bracket  210  fixedly provided at the mount  100  within a range where it does not interfere with the rotation of the bottom of the supporter  116  with respect to an outer wall of each of both sides of the mount  100  or the first port. 
     At this time, the cylinder rod  222  is connected to the hydraulic cylinder  220 , and an end portion of the cylinder rod  222  is hinged at the second hinge pin  122  provided below the supporter  116  and can extend and operate in the direction where the second hinge pin  122  rotates. 
     Here, the configuration wherein the cylinder rod  222  is hinge-connected with respect to the second hinge pin  122  may be obtained in such a way that an end portion of the cylinder rod  222  is formed flat to be inserted between the second forks  120 , and a hinge connection with respect to the second hinge pin  122  may be obtained by forming and correspondingly connecting, to a flat portion of the cylinder rod  222 , a longitudinal hole  230  having a predetermined length in upward and downward directions so as to correspond to any displacement occurring due to the rotation of the second hinge pin  122 . 
     As illustrated in  FIGS. 3 to 6 , the connection member  240  which separately forms the longitudinal hole  230  in a flat shape to be inserted between the second forks  120  may be installed at an end portion of the cylinder rod  222 . 
     At the top or lateral side of the hydraulic cylinder  220 , a hydraulic circuit  250  which allows to exchange fluid with the hydraulic cylinder based on the flow of fluid is installed. At the hydraulic circuit  250 , a motor  260  is installed, which allows to provide a pumping driving force with respect to the fluid flow of the hydraulic cylinder  220  and the hydraulic circuit  250  based on normal and reverse direction rotations based on electric power. 
     At the motor  260 , as stated above, there may be provided a switch  270  in order for a user to control the supply of electric power with respect to the normal and reverse direction rotations and stop for a pumping driving force for the flow of fluid. 
     In addition to the above configuration, a battery (not illustrated), etc. may be further provided at the actuator so as to supply electric power to the motor  260  through the switch  270 . 
     According to the thusly constituted apparatus for adjusting a bicycle saddle angle in a seated position while driving, the first hinge pin  114  and the second hinge pin  122  are arranged in parallel to each other, and the bottom of the supporter  116  including the second hinge pin  122  is rotatable about the first hinge pin  114 , and the rotational angle of the saddle  22  fixed on the top of the supporter  116  may be relationally determined based on the extensional driving and its level of the cylinder rod  222  of the corresponding actuator  200 , and such a driving may be relationally determined by the operation of the switch  270  of the user. 
     In a state where the saddle  22  remains parallel as illustrated in  FIG. 3 , when the cylinder rod  222  moves backward, the supporter  116  rotates in a counterclockwise direction about the first hinge pin  114  operating as a rotation axis as illustrated in  FIG. 4 , whereupon the saddle  22 , as illustrated in  FIG. 4 , operates inclined forward as illustrated in  FIG. 4 , and on the contrary, when the cylinder rod  222  moves forward, the supporter  116  rotates in a clockwise direction about the first hinge pin  114  operating as a rotation axis as illustrated in  FIG. 5 , whereupon the saddle  22  operates to be upright toward the initial position. 
     In the above way, the apparatus for adjusting angle according to a first exemplary embodiment of the present invention has an advantage easily, conveniently and freely adjusting the rotation angle of the saddle  22  based on the operation of the hydraulic cylinder  220 . 
     [Second Exemplary Embodiment] 
     The second exemplary embodiment of the apparatus for adjusting a bicycle saddle angle according to the present invention which is different from the above-described first exemplary embodiment may be modified in such a way that the angle of the saddle  22  can be adjusted using the saddle angle adjusting nit  300  as illustrated in  FIGS. 7 to 11 . 
     In this case, it does not need to install the first fork  110  (refer to  FIG. 3 ) on the top of the mount  100 , and it is preferably formed in a cylindrical shape. The housing  310  may be fixed in a type where the insertion part  312  is inserted into the top of the mount  100 . 
     In this case, as illustrated in  FIG. 9 , the insertion part  312  is a structure which extends downward from the lower surface of the housing  310 . The housing  310  is a formed in a box shape which defines an exterior of the saddle angle adjusting unit  300 . 
     In addition, according to the second exemplary embodiment of the present invention, the saddle  22  is supported by the saddle supporter  116 ′, and a worm wheel  320  is integrally fixed at the bottom of the saddle supporter  116 ′, and the worm wheel  320  is engaged in the inside of the housing  310  to the a worm shaft  330  and a gear. 
     At this time, the worm shaft  330  is assembled rotatable in the normal and reverse directions by the driving motor  340  disposed inside the housing  310 . 
     In addition, the worm wheel  320  is formed in a partially circular shape and includes teeth along its circumference to rotate engaged with the worm shaft  330 . 
     The saddle supporter  116 ′ is fixed integral with the top in the center of the worm wheel  320 . 
     In addition, the worm shaft  330  has a rod shape having a predetermined length, and teeth are formed on an outer circumference of the worm shaft  330  and rotate engaged with the worm wheel  320  along a longitudinal direction of the worm shaft  330 . Both ends of the worm shaft  330  are supported rotatable by a bearing  350 . 
     In addition, as described above, the driving motor  340  is directly connected to the worm shaft  330  and allows to rotate the worm shaft  330  in a normal or reverse direction. 
     In addition, the housing  310  has a hollow cylindrical shape at its one side wherein an opening  314  is formed and is supported by the mount  100 . The saddle supporter  116 ′ passes through the opening  314 . An insertion part  312  into which the mount  100  is inserted and engaged is formed at a lower side of the housing  310 . It is preferred that the insertion part  312  is arranged coaxial with the saddle supporter  116 ′ when the saddle  22  remains horizontal. 
     Here, the housing  310  may be formed in an integrated form or may be formed in a structure which can separate into upper and lower parts or into left and right parts. 
     In addition, the battery  360  is accommodated as an electric power supply part in the inside of a lower portion of the housing  310  so as to supply electric power to the driving motor  340 , and a control board  370  is accommodated as a control part in an inside of the lower portion thereof so as to control the driving of the driving motor  340 . 
     In this case, the driving motor  340 , the battery  360 , the control board  370 , etc. may be arranged at an outer side of the housing  310 , not being accommodated in the housing  310 . 
     Meanwhile, the battery  360  is connected via an electric wire “L” to the operation switch “SW” disposed at the handle bar  14 . Electric power can be supplied to the driving motor  340  from the battery  360  based on the operation of the operation switch “SW”, thus operating the driving motor  340 . 
     Here, the operation switch “SW” may be disposed at an outer side of the housing  310 , not being disposed at the handle bar  14 , which is not illustrated in the drawing. 
     With the above configuration, the apparatus for adjusting a bicycle saddle angle in a seated position while driving according to the second exemplary embodiment of the present invention operates as follows. 
     For example, in a state where the saddle  22  remains horizontal as illustrated in  FIG. 9 , in order to drive the driving motor  340 , the user may control the operation switch “SW” for the driving motor  340  to rotate in a reverse direction (counterclockwise direction). 
     In this way, the worm shaft  330  rotates in a reverse direction, and the work wheel  320  engaged thereto rotates in a clockwise direction. 
     Since the worm wheel  320  rotates in a clockwise direction, the saddle supporter  116 ′ rotates in a clockwise direction. The angle can be adjusted in such a way that the front of the saddle  22  is lifted up since the saddle  22  rotates in a clockwise direction. 
     Meanwhile, as illustrated in  FIG. 9 , in a state where the saddle  22  remains horizontal, the user operates the operation switch “SW” in order for the driving motor  340  to rotate in a normal direction (clockwise direction), thus driving the driving motor  340 . 
     Therefore, the worm shaft  330  rotates in a normal direction, and the worm wheel  320  tooth-engaged thereto rotates in a counterclockwise direction. 
     Since the worm wheel  320  rotates in a counterclockwise direction, the saddle supporter  116 ′ rotates in a counterclockwise direction. The angle can be adjusted in such a way that the front end of the saddle  22  descends and tilts downward. 
     Thus, the saddle angle adjusting function according to a second exemplary embodiment of the present invention allows to enable a user to ride a bicycle in the most comfortable posture based on the user&#39;s body type. When the bicycle runs up or down the inclined way, the user can easily adjust the angle of the saddle in response to such a situation, whereupon the user&#39;s body does not lean toward one direction, thus preventing any accident. In particular, it is possible to easily and freely adjust the angle of the saddle in such a way to drive the driving motor while riding the bicycle. 
     [Third Exemplary Embodiment] 
     The apparatus for adjusting a bicycle saddle angle according to a third exemplary embodiment of the present invention is obtained by modifying the structure of the second exemplary embodiment into another type as illustrated in  FIGS. 12 to 15 . 
     As illustrated in  FIG. 13 , the saddle angle adjusting unit  300  according to a third exemplary embodiment of the present invention may include, but is not limited thereto, a bracket  410 . 
     Here, the bracket  410  has at its one side a hollow container shape having an opening  412  and is supported by the mount  100 . 
     In addition, the saddle supporter  116 ′ passes through the opening  412  formed on the top of the bracket  410 , and at the bottom of the bracket  410 , an insertion part  414  into which the mount  100  is inserted is formed. 
     In this case, it is preferred that the insertion part  414  is arranged coaxial with the saddle supporter  116 ′ when the saddle  22  remains horizontal. 
     In addition, a first wire support  430   a  and a second wire supporter  430   b  configured to support both ends of the wire  420  are provided at both sides of the top of the inside of the bracket  410  with the saddle supporter  116 ′ being disposed between the first wire support  430   a  and the second wire supporter  430   b.    
     Here, the bracket  410  may be integrally formed or may have a structure wherein the bracket  410  separates into upper and lower parts or left and right parts. 
     In addition, the wire  420  may include a predetermined length, and both ends of the wire  420  are supported by the first wire support  430   a  and the second wire supporter  430   b  of the bracket  410 . 
     In addition, the wire  420  is supported spaced apart from the bracket  410  with the saddle supporter  116 ′ being disposed between the wires  420 , and the wire  420  forms a closed loop. 
     In addition, the wire  420  interconnects the bracket  410  and the saddle supporter  116 ′ in order for the saddle supporter  116 ′ to be rotatable with respect to the bracket  410 . 
     In particular, the saddle supporter  116 ′ and the top of the mount  100  are hinged (HN) and are configured foldable. 
     The operation switch “SW” is connected to a pathway of the wire  420 , thus pulling the wire  420  or removing the pulling thereof. 
     The operation switch “SW” is installed rotatable with respect to the mount  100  by means of a pin “PIN” for the sake of a rotation by a predetermined angle. 
     Therefore, it is possible to adjust the angle of the saddle  22  by rotating the saddle supporter  116 ′ with respect to the bracket  410  in such a way to pull the wire  420  or remove the pulling of the wire  420 . 
     In the third exemplary embodiment of the present invention, it shows that the operation switch “SW” is provided on the mount  100 . It is obvious that the operation switch “SW” may be provided on the handle bar  14 . 
     Meanwhile, the bicycle according to a third exemplary embodiment of the present invention may further include, but is not limited to, a plurality of first and second guide rollers  440   a  and  440   b  configured to guide the movements of the wire  420 , and a plurality of first and second direction change rollers  450   a  and  450   b  configured to change the moving direction of the wire  420 . 
     The plurality of the guide rollers  440   a  and  440   b  are provided in the longitudinal direction of the saddle supporter  116 ′ and at both sides of the bracket with the saddle supporter  116 ′ being disposed between them. 
     Here, six guide rollers  440   a  and  440   b  are disposed at both sides of the bracket  410  in the third exemplary embodiment of the present invention, but the number of such guide rollers is not limited. At least one guide roller may be provided. 
     Hereinafter, the guide roller positioned at the left side in  FIG. 13  is called a first guide roller  440   a , and the guide roller positioned at the right side is called a second guide roller  440   b.    
     Corresponding to the first and second guide rollers  440   a  and  440   b,  pluralities of first and second direction changing rollers  450   a  and  450   b  are disposed at both sides of the saddle supporter  116 ′. In the illustrated drawings, corresponding to the number of the first and second guide rollers  440   a  and  440   b,  six first and second direction changing rollers  450   a  and  450   b  are disposed at both sides of the saddle supporter  116 ′, respectively. Here, the number of such direction changing rollers is not limited. At least one direction changing roller may be provided. 
     In addition, in the first and second direction changing rollers  450   a  and  450   b , the direction changing roller positioned at the left side is called a first direction changing roller  450   a , and the direction changing roller positioned at the right side is called a second direction changing roller  450   b.    
     Therefore, one end of the wire  420  is wound around the first guide roller  440   a  and the first direction changing roller  450   a  in a zigzag shape, and the other end of the wire  420  is wound around the second guide roller  440   b  and the second direction switching roller  450   b  in a zigzag shape. 
     According to the above described configuration, as illustrated in  FIG. 13 , when the operation switch “SW” rotates at a predetermined angle toward the backside of the bicycle with the saddle  22  being horizontal, a tensional force occurs at the wire  420  which is the second wire supporter  430   b  and the second guide roller  440   b  and the second direction changing roller  450   b  were located. 
     As illustrated in  FIG. 14 , the saddle supporter  116 ′ rotates in a clockwise direction. Since the saddle supporter  116 ′ rotates in a clockwise direction, it is possible to adjust the angle in such a way that the saddle  22  rotate in a clockwise direction, and the front end of the saddle  22  is lifted upward. 
     Meanwhile, as illustrated in  FIG. 15 , with the saddle  22  being horizontal, when the operation switch “SW” rotates at a predetermined angle toward the front side of the bicycle, a tensional force occurs at the wire  420  which is the first wire support  430   a  and the first guide roller  440   a  and the first direction changing roller  450   a  were located. 
     As illustrated in  FIG. 14 , the saddle supporter  116 ′ rotates in a counterclockwise direction. Since the saddle supporter  116 ′ rotates in a counterclockwise direction, it is possible to adjust the angle in such a way that the saddle  22  rotates in a counterclockwise direction, and the front end of the saddle  22  is tilted downward. 
     In this way, the function of a saddle angle adjustment according to a third exemplary embodiment of the present invention allows a user to ride a bicycle in the most comfortable posture based on the user&#39; body type. When the bicycle runs up or down an inclined road, it is possible to easily adjust the angle of the saddle based on the inclination, whereupon the user&#39;s body does not tilt in one direction, thus preventing any accident. In particular, it is possible for a user to easily and freely adjust the angle of the saddle in such a way to drive the driving motor while the user is riding the bicycle. 
     As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described examples are not limited by any of the details of the foregoing description, unless otherwise specified, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.