Patent Publication Number: US-2023158932-A1

Title: Apparatus for adjusting position of armrest having control panel for vehicle

Description:
CROSS REFERENCE TO RELATED APPLICATION 
     The present application claims under 35 U.S.C. § 119(a) the benefit of Korean Patent Application No. 10-2021-0161475, filed Nov. 22, 2021, the entire contents of which is incorporated herein for all purposes by this reference. 
     TECHNICAL FIELD 
     The present disclosure relates to an apparatus for adjusting a position of an armrest having a control panel for a vehicle and, more particularly, to an apparatus for adjusting a position of an armrest having a control panel for a vehicle, the apparatus being capable of easily adjusting an armrest having a control panel to an occupant-desired position. 
     DESCRIPTION OF THE RELATED ART 
     Usually, a console having an armrest is arranged between a driver seat and a seat adjacent to the driver seat. Thus, a driver or an occupant other than the driver can comfortably rest his/her arm on the armrest. 
     Alternatively, the armrest is directly mounted on a lateral portion of a seat back constituting a vehicle seat. Thus, a driver or an occupant other than the driver can rest his/her arm on the armrest. 
     However, the direct mounting of the armrest on the lateral portion of the seat back has the following problems. 
     First, in a case where a side airbag is mounted inside the seat back, inflation of the side bag during a collision may cause the phenomenon of interference with the armrest mounted on the seat back. 
     Second, the convenience of enabling the occupant to rest his/her hand on the armrest is decreased because it is impossible to adjust a height and length of the armrest mounted on the seat back. The arm lengths vary among occupants having different body types, and therefore, occupants&#39; arms resting on the armrest vary in height and position. 
     Third, the armrest mounted on the seat back is positioned at a greater height than a buckle for fastening the seat belt. Thus, the armrest inconveniently causes interference when the seat belt is fastened and unfastened. 
     In addition, there is an increasing demand for a vehicle armrest on which the occupant can rest his/her arm rest and on which a control panel for controlling various devices for a vehicle can be installed to increase the occupant&#39;s convenience. 
     The foregoing is intended merely to aid in the understanding of the background of the present disclosure, and is not intended to mean that the present disclosure falls within the purview of the related art that is already known to those skilled in the art. 
     SUMMARY OF THE DISCLOSURE 
     An objective of the present disclosure is to provide an apparatus for adjusting a position of an armrest having a control panel for a vehicle, the apparatus in which an armrest assembly having a control panel is mounted on a side member of a seat cushion in a manner that is enabled to ascend and descend and in which the control panel is mounted on an armrest assembly in such a manner that a position in the backward-forward direction and a slope of the control panel are adjustable. With the apparatus, an armrest, a controller, and the like can be easily adjusted to desired positions and heights thereof according to an occupant&#39;s physical condition. 
     According to an aspect of the present disclosure, there is provided an apparatus for adjusting a position of an armrest having a control panel for a vehicle, the apparatus including: a stationary frame mounted on a side member of a seat cushion; an ascending and descending frame mounted on the stationary frame in a manner that is enabled to ascend and descend; an armrest frame mounted on a rear portion of the top of the ascending and descending frame; a trailer provided in such a manner as to have a structure where a control panel is installed on the top thereof, and mounted on a front portion of the top of the ascending and descending frame in such a manner that a position in the backward-forward direction of the trailer and a slope thereof are adjustable; and a drive device mounted on the stationary frame and the ascending and descending frame, driving the ascending and descending frame for ascending and descending, and at the same time adjusting the position in the backward-forward direction of the trailer and the slope thereof. 
     In the apparatus, stationary rails may be mounted on opposite lateral portions, respectively, of the stationary frame, and moving rails may be mounted on opposite lateral portions, respectively, of the ascending and descending frame, the moving rails being fastened to the station rails, respectively, in a manner that is enabled to ascend and descend. 
     In the apparatus, the drive device may include: a motor mounted on an external surface of the ascending and descending frame; first and second drive gears coaxially connected to an output shaft of the motor and positioned on an internal surface of the ascending and descending frame; a driven gear rotatably mounted on the ascending and descending frame and engaged with the first drive gear; a rack gear mounted on the stationary frame and engaged with the second drive gear; and a plurality of links positioned on the external surface of the ascending and descending frame, a lower end portion of the lowermost of the plurality of links being coaxially connected to the driven gear and an upper end portion of the uppermost thereof being connected to the trailer. 
     In some embodiments, the first drive gear and the second drive gear are coaxially connected to each other for being employed as pinion gears or helical-type gears. 
     In some embodiments, the driven gear is in the shape of a sector gear. 
     In some embodiments, the rack gear is engaged with the second drive gear. 
     In the apparatus, the first and second drive gears may be integrally connected in a coaxial manner to each other for being employed as a two-stage pinion gear. 
     In the apparatus, the plurality of links may include a drive link whose lower end portion is coaxially connected to a rotational shaft of the driven gear positioned on the internal surface of the ascending and descending frame; a push-pull link hinge-connected to a rear end portion of the trailer; and a connection link whose lower end portion is hinge-connected to the drive link and whose upper end portion is hinge-connected to the push-pull link. 
     In the apparatus, a first guide hole may be formed in the rear of an upper portion of the ascending and descending frame, and a first guide pin may be mounted on a hinge connection portion between the connection link and the push-pull link, the first guide pin being inserted into the first guide hole for being fastened thereto in a slidably movable manner. 
     In the apparatus, the first guide hole may include a first straight-line guide hole extending a long distance in the backward-forward direction; and a vertical guide hole extending downward from a front end portion of the first straight-line guide hole. 
     In the apparatus, a guide bracket may be mounted at a predetermined position on an external surface of an upper portion of the ascending and descending frame, the guide bracket serving to guide moving in the backward-forward direction of the trailer and adjusting of a slope thereof. 
     In the apparatus, in order to guide the moving in the backward-forward direction of the trailer and the adjusting of the slope thereof, second guide holes having the same track may be formed in a front part of the upper portion of the ascending and descending frame and the guide bracket, respectively, and second guide pins may be mounted on each of the opposite lateral portions of the trailer, the second guide pins being inserted into each of the second guide holes for being fastened thereto in a slidably movable manner. 
     In the apparatus, the second guide hole may include: a second straight-line guide hole extending a long distance in the backward-forward direction; and an inclination guide hole extending upward from a front end portion of the second straight-line guide hole. 
     In some embodiments, the inclination guide hole obliquely extends upward from a front end portion of the second straight-line guide hole. 
     The apparatus according to the present disclosure provides the following effects. 
     First, in the apparatus, an armrest assembly having a control panel is mounted on a side member of a seat cushion in a manner that is enabled to ascend and descend, and the control panel is mounted on an armrest assembly in such a manner that a position in the backward-forward direction and a slope of the control panel are adjustable. The apparatus can provide the convenience of easily adjusting an armrest, a controller, and the like to desired positions and heights according to an occupant&#39;s physical condition. 
     Second, when a seat is adjusted to a relaxation position according to an operation of reclining the seat back toward the rear of a vehicle and an operation of tiling a seat cushion, the control panel moves backward to the farthest position toward an occupant. At the same time, the armrest and the control panel descend to the smallest heights thereof. With this adjustment, the apparatus can provide the convenience of enabling the occupant to rest his/her arm on the armrest and the convenience of enabling operation of the control panel. 
     Third, the armrest and the control panel can be adjusted in such a manner as to have heights smaller than a height of a buckle for fastening a seat belt positioned on a lateral portion of the seat cushion. Thus, the armrest can be prevented from inconveniently causing interference when a seat belt is fastened and unfastened. 
     Fourth, instead of on the lateral portion of the seat back, the armrest and the control panel are mounted on a lateral portion of the seat cushion in a manner that is enabled to ascend and descend. Thus, when a side airbag mounted inside the seat back is inflated, a phenomenon of interference with the armrest can be prevented from occurring. 
     As discussed, the method and system suitably include use of a controller or processer. 
     In another embodiment, vehicles are provided that comprise an apparatus as disclosed herein. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The above and other objectives, features, and other advantages of the present disclosure will be more clearly understood from the following detailed description when taken in conjunction with the accompanying drawings, in which: 
         FIGS.  1  and  2    are perspective views each illustrating an apparatus for adjusting a position of an armrest having a control panel for a vehicle according to the present disclosure; 
         FIG.  3    is a vertical cross-sectional view illustrating the apparatus for adjusting a position of an armrest having a control panel for a vehicle according to the present disclosure; 
         FIG.  4    is a perspective view illustrating a state where the apparatus for adjusting a position of an armrest having a control panel for a vehicle according to the present disclosure is mounted on a side member of a seat cushion; 
         FIG.  5    is a front view illustrating a state where, by driving the apparatus for adjusting a position of an armrest having a control panel according to the present disclosure, an armrest descends to the lowest position thereof, and, at the same time, a control panel moves backward to the farthest position thereof; 
         FIG.  6    is a front view illustrating a state where an operation of causing the armrest to ascend and descend and an operation of moving forward and tilting the control panel are performed at the same time by operating the apparatus for adjusting a position of an armrest having a control panel according to the present disclosure; and 
         FIG.  7    is a front view illustrating that the armrest ascends to the highest position thereof in a state where the operation of moving forward and tilting the control panel is performed by operating the apparatus for adjusting a position of an armrest having a control panel according to the present disclosure. 
     
    
    
     DETAILED DESCRIPTION OF THE EMBODIMENTS 
     It is understood that the term “vehicle” or “vehicular” or other similar term as used herein is inclusive of motor vehicles in general such as passenger automobiles including sports utility vehicles (SUV), buses, trucks, various commercial vehicles, watercraft including a variety of boats and ships, aircraft, and the like, and includes hybrid vehicles, electric vehicles, plug-in hybrid electric vehicles, hydrogen-powered vehicles and other alternative fuel vehicles (e.g. fuels derived from resources other than petroleum). As referred to herein, a hybrid vehicle is a vehicle that has two or more sources of power, for example both gasoline-powered and electric-powered vehicles. 
     The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used herein, the singular forms “a,” “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. These terms are merely intended to distinguish one component from another component, and the terms do not limit the nature, sequence or order of the constituent components. It will be further understood that the terms “comprises” and/or “comprising,” when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items. Throughout the specification, unless explicitly described to the contrary, the word “comprise” and variations such as “comprises” or “comprising” will be understood to imply the inclusion of stated elements but not the exclusion of any other elements. In addition, the terms “unit”, “-er”, “-or”, and “module” described in the specification mean units for processing at least one function and operation, and can be implemented by hardware components or software components and combinations thereof. 
     Although exemplary embodiment is described as using a plurality of units to perform the exemplary process, it is understood that the exemplary processes may also be performed by one or plurality of modules. Additionally, it is understood that the term controller/control unit refers to a hardware device that includes a memory and a processor and is specifically programmed to execute the processes described herein. The memory is configured to store the modules and the processor is specifically configured to execute said modules to perform one or more processes which are described further below. 
     Further, the control logic of the present disclosure may be embodied as non-transitory computer readable media on a computer readable medium containing executable program instructions executed by a processor, controller or the like. Examples of computer readable media include, but are not limited to, ROM, RAM, compact disc (CD)-ROMs, magnetic tapes, floppy disks, flash drives, smart cards and optical data storage devices. The computer readable medium can also be distributed in network coupled computer systems so that the computer readable media is stored and executed in a distributed fashion, e.g., by a telematics server or a Controller Area Network (CAN). 
     A desired embodiment of the present disclosure will be described below in detail with reference to the accompanying drawings. 
       FIGS.  1  to  3    are views each illustrating an apparatus for adjusting a position of an armrest having a control panel for a vehicle according to the present disclosure.  FIG.  4    is a view illustrating a state where the apparatus for adjusting a position of an armrest having a control panel for a vehicle according to the present disclosure is mounted on a seat cushion frame. Reference number  100  in the drawings refers to a stationary frame. 
     A stationary frame  100  may be fixedly mounted on a lateral portion of a seat cushion  10 . 
     To this end, as illustrated in  FIG.  4   , a side bracket  14  may be mounted on a side member  12  that constitutes a lateral frame of the seat cushion  10 . For assembly, a stationary frame  100  is fixed to the side bracket  14  using a bolt or the like. 
     In addition, an ascending and descending frame  110  may be mounted on the stationary frame  100  in a manner that is enabled to ascend and descend. 
     To this end, stationary rails  101  may be mounted on opposite lateral portions, respectively, in the backward-forward direction of the stationary frame  100 . Moving rails  102  are mounted on opposite lateral portions, respectively, of the ascending and descending frame  110 . The moving rails  102  are fastened on the stationary rails  101 , respectively, in a manner that is enabled to ascend and descend. 
     In this case, an armrest frame  120 , serving as an enclosing armrest frame, may be mounted on a rear portion of the top of the ascending and descending frame  110 . A trailer  130  is mounted on a front portion of the top of the ascending and descending frame  110  in a manner that is enabled to move backward and forward to adjust a position in the forward-backward direction of the trailer  130  and a slope thereof when the trailer  130  moves backward and forward. A control panel  140  is installed on the top of the trailer  130 . 
     It is desirable that the control panel  140  to be installed on the top of the trailer  130  may be provided in such a manner as to have a structure where switches, buttons, and the like for operating various vehicle continence apparatuses (for example, a motor-operated seat, an air conditioner, and the like) are mounted in a predetermined arrangement. 
     According to the present disclosure, a drive device  200  may be mounted on the ascending and descending frame  110  mounted on the stationary frame  100 . The drive device  200  serves not only to drive the ascending and descending frame  110  for ascending and descending, but also to move the trailer  130  backward and forward for adjusting a position in the backward-forward direction of the trailer  130  and adjusting a slope of the trailer  130  for arrangement. 
     As illustrated in  FIGS.  1  to  3   , the drive device  200  may be configured to include a motor  201 , a first drive gear  210  and a second drive gear  220 , a driven gear  230 , and a rack gear  240 . The motor  201  is mounted on an external surface of the ascending and descending frame  110 . The first drive gear  210  and the second drive gear  220  are coaxially connected to an output shaft of the motor  201  and are positioned on an internal surface of the ascending and descending frame  110 . The driven gear  230  is rotatably mounted on the ascending and descending frame  110 . The driven gear  230  in the shape of a sector gear is engaged with the first drive gear  210 . The rack gear  240  is mounted on an internal surface of the stationary frame  100  in a manner that is arranged in the upward-downward direction, and is engaged with the second drive gear  220 . 
     At this point, the first drive gear  210  engaged with the driven gear  230  and the second drive gear  220  engaged with the rack gear  240 , as illustrated in  FIG.  3   , may be integrally connected in a coaxial manner to each other for being employed as a two-stage pinion gear. 
     Alternatively, the first drive gear  210  and the second drive gear  220  may be employed as helical-type gears, in addition to the two-stage pinion gear. 
     In addition, the drive device  200  may be configured to further include a plurality of links  250 . A lower end portion of the lowermost of the plurality of links  250  is coaxially connected to the driven gear  230 , and an upper end portion of the uppermost thereof is connected to a rear end portion of the trailer  130 . Thus, the plurality of links  250  are positioned on the external surface of the ascending and descending frame  110 . 
     The plurality of links  250 , as illustrated in  FIGS.  1  and  2   , may be configured to include a drive link  251 , a push-pull link  253 , and a connection link  252 . A lower end portion of the drive link  251  is coaxially connected to a rotational shaft of the driven gear  230  positioned on the internal surface of the ascending and descending frame  110 . The push-pull link  253  is hinge-connected to a lower end portion of the trailer  130 . A lower end portion of the connection link  252  is hinge-connected to an upper end portion of the drive link  251 , and an upper end portion thereof is hinge-connected to a rear end portion of the push-pull link  253 . 
     In addition, among the plurality of links  250 , the drive link  251 , the connection link  252 , and the like may be replaced with various power transmission mechanisms, such as pulleys and belts, for transmitting a rotational force. 
     A first guide hole  111  for guiding of moving in the backward-forward direction of the push-pull link  253  may be formed in the rear of an upper portion of the ascending and descending frame  110 . A first guide pin  254  is mounted on a hinge connection unit between an upper end portion of the connection link  252  and the rear end portion of the push-pull link  253 . The first guide pin  254  is inserted into the first guide hole  111  for being fastened thereto in a slidably movable manner. 
     It is desirable that the first guide hole  111  is configured to include a first straight-line guide hole  112  extending a long distance in the backward-forward direction and a vertical guide hole  113  extending downward from a front end portion of the first straight-line guide hole  112 . 
     Accordingly, when the first guide pin  254  mounted on the hinge connection unit between the upper end portion of the connection link  252  and the rear end portion of the push-pull link  253  moves along the first straight-line guide hole  112  of the first guide hole  111 , the trailer  130  connected to the push-pull link  253  and the control panel  140  installed on the top of the trailer  130  may also move backward and forward. Thus, the position in the backward-forward direction of the control panel  140  is adjusted. 
     In addition, the first guide pin  254  mounted on the hinge connection unit between the upper end portion of the connection link  252  and the rear end portion of the push-pull link  253  may be positioned on the front end portion of the first straight-line guide hole  112  of the first guide hole  111 . Then, when the ascending and descending frame  110  ascends, the first guide pin  254  moves from the first straight-line guide hole  112  of the first guide hole  111  to the vertical guide hole  113  for changing a position thereof. Thus, the ascending and descending frame  110  can easily ascend to the highest position thereof. 
     A guide bracket  150  may be mounted at a predetermined position on an external surface of the upper portion of the ascending and descending frame  110 . The guide bracket  150  serves to guide adjusting of a position in the backward-forward direction of the trailer  130  connected to the push-pull link  253  and adjusting of a slope of the trailer  130 , and serves to guide adjusting of a position in the backward-forward direction of the control panel  140  installed on the top of the trailer  130  and adjusting of a slope of the control panel  140 . 
     When the trailer  130  and the control panel  140  installed on the top of the trailer  130  move in the backward-forward direction, it is necessary to guide the moving in the backward-forward direction of the trailer  130  and the adjusting of the slope thereof. To this end, second guide holes  151  that have the same track are formed in a front part of the upper portion of the ascending and descending frame  110  and the guide bracket  150 , respectively. Furthermore, second guide pins  131  are mounted on each of the opposite lateral portions of the trailer  130 . The second guide pins  131  are inserted into each of the second guide hole  151  for being fastened thereto in a slidably movable manner. 
     It is desirable that the second guide hole  151  is configured to include a second straight-line guide hole  152  and an inclination guide hole  153 . The second straight-line guide hole  152  extends a long distance in the backward-forward direction. The inclination guide hole  153  obliquely extends upward from a front end portion of the second straight-line guide hole  152 . 
     Accordingly, when the push-pull link  253  moves backward, the second guide pin  131  of the trailer  130  may also move backward and then be positioned in the second straight-line guide hole  152  of the second guide hole  151 . Thus, the trailer  130  and the control panel  140  installed on the top of the trailer  130  may also move backward and may be arranged in the horizontal state. 
     When the push-pull link  253  moves forward, the second guide pin  131  of the trailer  130  may also move forward and then be positioned in the inclination guide hole  153  of the second guide hole  151 . Thus, the trailer  130  and the control panel  140  installed on the top of the trailer  130  may also move forward and at the same time may be arranged in such a manner as to have a slope that is inclined upward toward the front. 
     An operating state of the apparatus for adjusting a position of an armrest having a control panel according to the present disclosure will be described as follows. 
       FIG.  5    is a front view illustrating a state where, by driving the apparatus for adjusting a position of an armrest having a control panel according to the present disclosure, an armrest descends to the lowest position thereof, and, at the same time, the control panel moves backward to the farthest position thereof. 
     First, a user operates a switch provided on the control panel  140  or the like to drive the motor  201  for rotation in one direction. Then, the first drive gear  210  and the second drive gear  220 , which are coaxially connected to the output shaft of the motor  201 , may also rotate in one direction. 
     Subsequently, the driven gear  230  engaged with the first drive gear  210  may rotate counterclockwise, and at the same time, the drive link  251  connected to the rotational shaft of the driven gear  230  may rotate counterclockwise. Thus, the connection link  252  is pushed in the backward direction, and the push-pull link  253  connected to the connection link  252  is pulled in the backward direction. 
     Accordingly, the first guide pin  254  mounted on the hinge connection unit between the upper end portion of the connection link  252  and the rear end portion of the push-pull link  253 , as illustrated in  FIG.  5   , may move backward to the rearmost portion of the first straight-line guide hole  112  of the first guide hole  111  and be positioned at the rearmost portion thereof. Thus, the push-pull link  253  moves backward to the farthest position thereof and is in a state of being positioned at the farthest position thereof. 
     At the same time, when the push-pull link  253  moves backward, as illustrated in  FIG.  5   , the second guide pin  131  of the trailer  130  may also move backward and be positioned in the second straight-line guide hole  152  of the second guide hole  151 . Thus, the trailer  130  and the control panel  140  installed on the top of the trailer  130  also move backward to the farthest positions thereof and are arranged in the horizontal state. 
     In addition, when the motor  201  is driven for rotation in a first direction, the second drive gear  220  may also rotate in the first direction. Then, the rack gear  240  engaged with the second drive gear  220  moves downward in a straight line. Thus, the ascending and descending frame  110  on which the rack gear  240  is mounted may descend up to the lowest position thereof. 
     At this point, when the ascending and descending frame  110  descends, the moving rails  102  mounted on the opposite lateral portions, respectively, of the ascending and descending frame  110  may move along the stationary rails  101  mounted on the opposite lateral portions, respectively, in the backward-forward direction of the stationary frame  100 . Thus, the ascending and descending frame  110  may stably descend along a predetermined track. 
     That is, when the ascending and descending frame  110  descends to the lowest position thereof, the armrest frame  120  and the trailer  130  on the top of which the control panel  140  is installed may be also arranged horizontally at the lowest descending position thereof and be in a state of being parallelly arranged along the backward-forward direction. 
     In this manner, for position adjustment, the control panel  140  may be caused to move backward to the farthest position thereof toward an occupant. At the same time, for height adjustment, the armrest  120  and the control panel  140  are caused to descend to the smallest heights thereof. Thus, with an operation of reclining a seat back toward the rear of a vehicle and an operation of tiling a seat cushion, a seat is adjusted in such a manner as to be positioned at a relaxation position. With this adjustment, the convenience of enabling the occupant to rest his/her arm on the armrest and the convenience of enabling operation of the control panel can be provided. 
     Moreover, when the armrest frame  120  and the control panel  140  move downward to the lowest positions thereof, the armrest frame  120  and the control panel  140  may be adjusted to heights lower than a height of a seatbelt fastening buckle  20  positioned on the lateral portion of the seat cushion  10 . Thus, the armrest surrounded by the armrest frame  120  and the control panel  140  can be prevented from inconveniently causing interference when the user fastens and unfastens a seat belt. 
       FIG.  6    is a front view illustrating a state where an operation of causing the armrest to ascend and descend and an operation of moving forward and tilting the control panel are performed at the same time by operating the apparatus for adjusting a position of an armrest having a control panel according to the present disclosure. 
     When the user operates a switch on the control panel  140  or the like to drive the motor  201  for rotation in a second direction, the first drive gear  210  and the second drive gear  220 , which are coaxially connected to the output shaft of the motor  201 , may also rotate in the second direction. 
     Subsequently, the driven gear  230  engaged with the first drive gear  210  may rotate clockwise, and at the same time, the drive link  251  connected to the rotational shaft of the driven gear  230  may rotate clockwise. Thus, the connection link  252  is pulled in the forward direction, and the push-pull link  253  connected to the connection link  252  is also pulled in the forward direction. 
     Accordingly, the first guide pin  254  mounted on the hinge connection unit between the upper end portion of the connection link  252  and the rear end portion of the push-pull link  253 , as illustrated in  FIG.  6   , may move forward to the frontmost portion of the first straight-line guide hole  112  of the first guide hole  111  and be positioned at the front most portion thereof. Thus, the push-pull link  253  moves forward to the farthest position thereof and is in a state of being positioned at the farthest position thereof. 
     At the same time, when the push-pull link  253  moves forward, as illustrated in  FIG.  6   , the second guide pin  131  of the trailer  130  may also move forward from the second straight-line guide hole  152  of the second guide hole  151  to the inclination guide hole  153 . Thus, the trailer  130  and the control panel  140  installed on the top of the trailer  130  move forward to the farthest positions thereof and, at the same time, are arranged in a manner that is inclined downward toward the occupant. 
     In addition, when the motor  201  is driven for rotation in a second direction, the second drive gear  220  may also rotate in the second direction. Then, the rack gear  240  engaged with the second drive gear  220  moves upward in a straight line. Thus, the ascending and descending frame  110  on which the rack gear  240  is mounted may ascend. 
     At this point, when the ascending and descending frame  110  ascends, the moving rails  102  mounted on the opposite lateral portions, respectively, of the ascending and descending frame  110  may move along the stationary rails  101  mounted on the opposite lateral portions, respectively, in the backward-forward direction of the stationary frame  100 . Thus, the ascending and descending frame  110  may stably ascend along a predetermined track. 
     In this manner, in order for the occupant to operate the control panel  140  in a comfortable posture, the control panel  140  may be arranged in a manner that is inclined downward toward the occupant. At the same time, the ascending and descending frame  110  may ascend to an appropriate height, and then the armrest frame  120  may be adjusted to a height at which the occupant comfortably rests his/her arm on the armrest. 
     Of course, according to an amount of rotation of the motor  201 , an adjustment is made so that a distance by which the push-pull link  253  moves forward and a distance by which the trailer  130  and the control panel  140  installed on the top of the trailer  130  move forward is shorter than a maximum forward movement distance. 
     Accordingly, according to the occupant&#39;s physical conditions (for example, an arm length, and the like), the armrest, the control panel, and the like may be easily adjusted to desired positions and heights thereof. Thus, the occupant convenience can be improved. 
       FIG.  7    is a front view illustrating that the armrest ascends to the highest position thereof in a state where the operation of moving forward and tilting the control panel is performed by operating the apparatus for adjusting a position of an armrest having a control panel according to the present disclosure. 
     When the user operates a switch provided on the control panel  140  or the like to drive the motor  201  for further rotation in the second direction, the first drive gear  210  and the second drive gear  220  that are coaxially connected to the output shaft of the motor  201  may also further rotate in the second direction. 
     Subsequently, the driven gear  230  engaged with the first drive gear  210  may further rotate clockwise, and at the same time, the drive link  251  connected to the rotational shaft of the driven gear  230  further rotates clockwise. Thus, the connection link  252  may be pulled in the downward direction, and the push-pull link  253  connected to the connection link  252  be also pulled in the downward direction. 
     Accordingly, the first guide pin  254  mounted on the hinge connection unit between the upper end portion of the connection link  252  and the rear end portion of the push-pull link  253 , as illustrated in  FIG.  7   , may descend from the frontmost portion of the first straight-line guide hole  112  of the first guide hole  111  to the vertical guide hole  113 . 
     At this point, the second guide pin  131  of the trailer  130  may remain positioned in the inclination guide hole  153 . Thus, the trailer  130  and the control panel  140  installed on the top of the trailer  130  are kept arranged in a manner that is inclined downward toward the occupant. 
     In addition, when the motor  201  is further driven for rotation in the second direction, the second drive gear  220  may further rotate in the second direction. Then, the rack gear  240  engaged with the second drive gear  220  further moves upward in a straight line. Thus, the ascending and descending frame  110  on which the rack gear  240  is mounted may ascend to the highest position thereof. 
     At this point, when the ascending and descending frame  110  ascends to the highest position thereof, the first guide pin  254  mounted on the hinge connection unit between the upper end portion of the connection link  252  and the rear end portion of the push-pull link  253 , as illustrated in  FIG.  7   , may descend from the frontmost portion of the first straight-line guide hole  112  of the first guide hole  111  to the lowermost portion of the vertical guide hole  113 . 
     In this manner, in order for the occupant to operate the control panel  140  in the comfortable posture, the control panel  140  may be arranged in a manner that is inclined downward toward the occupant. At the same time, the ascending and descending frame  110  may be adjusted in such a manner as to ascend to the maximum height thereof. Thus, the armrest, the control panel, and the like may be easily adjusted to the maximum heights thereof according to the occupant&#39;s physical conditions. 
     The embodiment of the present disclosure is described above in detail, but does not impose any limitation on the claimed scope of the present disclosure. Various modifications and improvements that a person of ordinary skill in the art makes using the fundamental concept of the present disclosure that is defined in the following claims will also be included in the claimed scope of the present disclosure. 
     Although the specific embodiment of the present disclosure has been described for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the disclosure as disclosed in the accompanying claims.