Patent Publication Number: US-11027633-B2

Title: Power head restraint flexible closeout cover

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     The present application is a divisional of U.S. patent application Ser. No. 16/159,984, filed on Oct. 15, 2018, now U.S. Pat. No. 10,144,321 entitled, POWER HEAD RESTRAINT FLEXIBLE CLOSEOUT COVER, which is a divisional of U.S. patent application Ser. No. 15/139,483, filed Apr. 27, 2016, now. U.S. Pat. No. 10,625,644 entitled, POWER HEAD RESTRAINT FLEXIBLE CLOSEOUT COVER, the entire disclosure of which is hereby incorporated herein by reference. 
    
    
     FIELD OF THE INVENTION 
     The present invention generally relates to a headrest assembly for a vehicle seat, and more particularly, to an adjustable headrest assembly having a flexible cover member configured to conceal components of the headrest assembly when adjusting the headrest assembly. 
     BACKGROUND OF THE INVENTION 
     In the automotive industry, a number of headrest designs are available that provide adjustment of a headrest to accommodate a variety of vehicle occupants in multiple positions. A headrest assembly that can provide adequate adjustment is desired in order to satisfy the needs of various vehicle occupants, and such a headrest should be aesthetically pleasing as well by providing a flexible cover member to conceal moving parts of the headrest assembly. 
     SUMMARY OF THE INVENTION 
     According to one aspect of the present invention, a vehicle seat includes a seatback having an upper portion. An adjustable headrest assembly is supported on the upper portion of the seatback. The adjustable headrest assembly has a headrest bun and an adjustment mechanism for adjusting the headrest bun between extended and retracted positions. A trim component is disposed on the upper portion of the seatback having a relief portion. The relief portion is configured to receive a portion of the adjustment mechanism as the headrest bun is driven towards the extended position. A flexible cover member is coupled to the trim component at the relief portion. The flexible cover member has a plate member operable between extend and retracted positions. The portion of the adjustment mechanism abuts an inner surface of the plate member to move the plate member towards the extended position as the headrest bun is driven towards the extended position. 
     According to another aspect of the present invention, a vehicle seat includes a seatback having an upper portion. A headrest assembly is coupled to the upper portion and has an adjustment mechanism for adjusting a position of a headrest bun. A flexible cover member is coupled to the upper portion and has a plate member engaged with the adjustment mechanism. The plate member is moved towards an extended position as the headrest bun is driven outwardly by the adjustment mechanism. 
     According to yet another aspect of the present invention, a vehicle seat includes a seatback which has an upper portion. A headrest assembly is coupled to the upper portion. A cover member is positioned below the headrest assembly which includes a generally U-shaped support frame and a plate member pivotally coupled to a lower portion of the support frame through a flexible joint. Ends of the plate member are coupled to side members of the support frame through flexible connectors. 
     These and other aspects, objects, and features of the present invention will be understood and appreciated by those skilled in the art upon studying the following specification, claims, and appended drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       In the drawings: 
         FIG. 1  is a front perspective view of a vehicle seat having a headrest assembly as disposed in a vehicle interior; 
         FIG. 2A  is a side elevational view of a headrest assembly according to an embodiment of the present invention, wherein a headrest bun of the headrest assembly is in a retracted position; 
         FIG. 2B  is a side elevational view of the headrest of  FIG. 2A  with the headrest bun in a forward position relative to  FIG. 2A , thereby revealing an adjustable cover assembly; 
         FIG. 2C  is a side elevational view of the headrest of  FIG. 2B  showing the headrest bun in a full forward position; 
         FIG. 3A  is a cross-sectional view of the headrest assembly showing an adjustment mechanism for adjusting the headrest bun; 
         FIG. 3B  is a cross-sectional view of the headrest assembly of  FIG. 3A  with the headrest bun in a forward position relative to  FIG. 3A ; 
         FIG. 3C  is a cross-sectional view of the headrest assembly of  FIG. 3B  with the headrest bun in a forward position relative to  FIG. 3B ; 
         FIG. 4A  is a front perspective view of a headrest assembly with a rear trim cover and headrest bun removed to reveal a linkage system in a retracted position; 
         FIG. 4B  is a front perspective view of the headrest assembly of  FIG. 4A  with the linkage system in a fully extended position; 
         FIG. 4C  is a rear perspective view of the headrest assembly of  FIG. 4A ; 
         FIG. 4D  is a rear perspective view of the headrest assembly of  FIG. 4B ; 
         FIG. 5A  is a side elevational view of the headrest of  FIG. 2A  with a shroud removed to reveal the adjustable cover assembly; 
         FIG. 5B  is a side elevational view of the headrest of  FIG. 5A  with the adjustable cover assembly in a partially extended position; 
         FIG. 5C  is a side elevational view of the headrest assembly of  FIG. 5B  with the adjustable cover assembly in a fully extended position; 
         FIG. 5D  is a side elevational view of the headrest assembly of  FIG. 5A  with a rear portion of the adjustable cover assembly shown in multiple positions superimposed over the other; 
         FIG. 5E  is a cross-sectional view of the headrest assembly of  FIG. 2A  showing an engagement flange spaced away from an interior rim of the housing; 
         FIG. 5F  is a cross-sectional view of the headrest assembly of  FIG. 2B  showing the engagement flange abutting the interior rim of the housing; 
         FIG. 5G  is a cross-sectional view of the headrest assembly of  FIG. 2C  showing the engagement flange pivoted relative to the interior rim of the housing; 
         FIG. 6A  is a front perspective view of a vehicle seat assembly according to another embodiment of the present invention; 
         FIG. 6B  is a rear perspective view of the vehicle seat of  FIG. 6A ; 
         FIG. 7A  is a front perspective view of a cover plate; 
         FIG. 7B  is a rear perspective view of the cover plate of  FIG. 7A ; 
         FIG. 7C  is a rear perspective view of the cover plate of  FIG. 7B  as coupled to a frame component of a vehicle seat; 
         FIG. 8A  is a front perspective view of the cover plate of  FIG. 7A  coupled to the vehicle seat of  FIG. 6A ; 
         FIG. 8B  is a front perspective view of the cover plate of  FIG. 8A  shown in phantom to reveal various coupling components of the vehicle seat; 
         FIG. 9A  is a side elevational view of a headrest assembly having the cover plate of  FIG. 7A  disposed thereon in a retracted position; 
         FIG. 9B  is a side elevational view of the headrest assembly of  FIG. 9A  shown in an extended position, with the cover plate also in an extended position; 
         FIG. 10A  is a front perspective view of a headrest assembly with a headrest bun in a fully extended position. 
         FIG. 10B  is a front perspective view of the headrest assembly of  FIG. 10A  with the headrest bun removed; 
         FIG. 11A  is a front perspective view of the headrest assembly of  FIG. 10B  with a rear housing removed; 
         FIG. 11B  is a front perspective view of the headrest assembly of  FIG. 11A  with the adjustable cover assembly removed to reveal the linkage system; 
         FIG. 12  is a front perspective view of a headrest assembly shown in a retracted position with components of the adjustable cover assembly exploded away from the linkage system; 
         FIG. 13A  is a front perspective view of components of another embodiment of an adjustable cover assembly exploded away from one another; 
         FIG. 13B  is a cross-sectional view of the cover assembly components of  FIG. 13A  in an assembled condition showing a spacer of the first member of the cover assembly spaced-apart from a front engagement edge of a second member of the cover assembly; and 
         FIG. 13C  is a cross-sectional view of the cover assembly components of  FIG. 13B  showing the engagement edge of the second member positioned in contact with the spacer of the first member. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     For purposes of description herein, the terms “upper,” “lower,” “right,” “left,” “rear,” “front,” “vertical,” “horizontal,” and derivatives thereof shall relate to the invention as oriented in  FIG. 1 . However, it is to be understood that the invention may assume various alternative orientations, except where expressly specified to the contrary. It is also to be understood that the specific devices and processes illustrated in the attached drawings, and described in the following specification are simply exemplary embodiments of the inventive concepts defined in the appended claims. Hence, specific dimensions and other physical characteristics relating to the embodiments disclosed herein are not to be considered as limiting, unless the claims expressly state otherwise. 
     Referring now to  FIG. 1 , a vehicle seat  10  is shown disposed within a vehicle interior  14  of a vehicle  12 . The vehicle seat  10  includes a seat portion  16  which is coupled to a seatback  18 . The seatback  18  includes an upper portion  18   a  having a headrest assembly  20  mounted thereon. The headrest assembly  20  includes a housing  24  that is a rear housing disposed adjacent to an adjustable headrest bun  22 . The headrest bun  22  is contemplated to be a cushioned member configured to support the head of a vehicle occupant seated in the vehicle seat  10 . The vehicle seat  10  of  FIG. 1  is shown as a driver&#39;s side vehicle seat, however, it is contemplated that the headrest assembly  20  of the present invention may be disposed on any vehicle seat within a vehicle, including passenger seats, rear seats, folding seats and third row passenger seat options. As such, the headrest assembly  20  shown in  FIG. 1  is not intended to limit the spirit of the invention as shown on a front driver&#39;s side vehicle seat  10 . 
     As noted above, the headrest assembly  20  is an adjustable headrest assembly, wherein the headrest bun  22  is contemplated to be adjustable in a forward direction, as indicated by arrow F between extended and retracted positions, as well as a vertical direction, as indicated by arrow V, between raised and lowered positions, relative to the housing  24 . In the position shown in  FIG. 1 , the headrest assembly  20  is contemplated to be in a home position H which correlates to the headrest bun  22  being in the lowered vertical position L and the retraced horizontal position R, such that the headrest bun  22  is disposed directly in front of the housing  24 . Movement of the headrest bun  22  is contemplated to be powered by one or more powered adjustment mechanisms that are substantially concealed by the housing  24  when the headrest assembly  20  is in the home position H. 
     Referring now to  FIG. 2A , the headrest assembly  20  is shown in the home position H with the headrest bun  22  in the retracted position R relative to the housing  24 . The headrest assembly  20  is supported from and mounted to a seatback frame  28  that is generally positioned within the seatback  18  ( FIG. 1 ) in assembly. The headrest bun  22  is shown as a two-piece member having a cushioned front portion  22   a , for engagement (or abutting support) by a user, and a rear coupling portion  22   b . The housing  24  is also a two-piece member having a front shroud  24   a  and rear shroud  24   b  which are used to surround and conceal various adjustment mechanisms and systems used to adjust a position of the headrest bun  22 . As further shown in  FIG. 2A , an adjustable cover assembly  30  is disposed in a stowed position S, and is configured to cover an area between the headrest bun  22  and the housing  24 , as further described below. The adjustable cover assembly  30 , as further shown in  FIGS. 2B and 2C , is better revealed as the headrest bun  22  moves forward in a direction as indicated by arrow F relative to the housing  24 . The adjustable cover assembly  30  is contemplated to be a plastic injection molded multi-part assembly that is configured to substantially conceal various adjustment mechanisms and systems of the headrest assembly  20  as the headrest bun  22  is adjusted horizontally relative to the housing  24 . 
     Referring now to  FIG. 2B , the headrest bun  22  is shown in a forward position F 1 , wherein the headrest bun  22  has moved in a car-forward direction along the path indicated by arrow F with respect to the housing  24 . Thus, as shown in  FIG. 2B , the coupling portion  22   b  of headrest bun  22  is shown spaced away from the front shroud  24   a  of the housing  24  to define a spacing S therebetween. With the spacing S between the coupling portion  22   b  of the headrest bun  22  and the front shroud  24   a  of the housing  24 , the adjustable cover assembly  30  can be seen having two gap-hiding members, a first member  30   a  and a second member  30   b , which together conceal adjustment components of the headrest assembly  20  over the spacing S. It is contemplated that the first member  30   a  can nest within the second member  30   b , or vice versa, such that the adjustable cover assembly  30  can telescopingly extend in a seemingly horizontal manner as the headrest bun  22  is driven away from the housing  24  in the forward direction as indicated by arrow F. In the embodiment shown in  FIG. 2B , the adjustable cover assembly  30  is in a mid-position M, wherein the first member  30   a  is partially received in the second member  30   b  of the adjustable cover assembly  30 . Further, the first member  30   a  is contemplated to be fully retracted and partially received in a nested position within the second member  30   b  of the adjustable cover assembly  30  when the headrest bun  22  is in the retracted position R ( FIG. 2A ). Thus, the first member  30   a  and the second member  30   b  can also be referred to as inner and outer members or gap-hiders given the nesting or telescoping relationship of the two components. 
     The adjustable cover assembly  30  is coupled to a linkage system  52  ( FIG. 3A ) that acts as a carrier for the headrest bun  22  that is also coupled to the linkage system  52 . Engagement between the first member  30   a  of the adjustable cover assembly  30  and the linkage system  52  is further described below with reference to  FIG. 12 . The adjustable cover assembly  30  is further coupled to the housing  24  by a kinetic engagement between the second member  30   b  of the adjustable cover assembly  30  and the front shroud  24   a  of the housing  24 . The housing  24  is a stationary assembly that is coupled to and supported by the seatback frame  28 . Thus, as the headrest bun  22  moves horizontally in the direction as indicated by arrow F, the adjustable cover assembly  30  follows the headrest bun  22  on the linkage system  52  and extends in a telescoping-like manner, as further described below. In this way, the adjustable cover assembly  30  is a slave to the movement of the linkage system  52  and headrest bun  22 , and only extends or retracts as a condition of the movement of the linkage system  52 . Thus, the adjustable cover assembly  30  acts as a two-piece gap hider for the headrest assembly  20  by concealing adjustment components that would otherwise be revealed in the spacing S between the headrest bun  22  and the housing  24  as the headrest bun  22  extends outwardly towards the extended position E ( FIG. 2C ). 
     Referring now to  FIG. 2C , the headrest bun  22  of the headrest assembly  20  is shown in the extended position E, which is contemplated to be a full extension of the headrest bun  22  in the direction as indicated by arrow F relative to the housing  24 . In  FIG. 2C , the first member  30   a  of the adjustable cover assembly  30  is more clearly shown given the increased spacing S between the coupling portion  22   b  of the headrest bun  22  and the front shroud  24   a  of the housing  24 . In  FIG. 2C , the first member  30   a  is in an outwardly extended position relative to the second member  30   b , such that the first member  30   a  is no longer nested with the second member  30   b . Thus, in  FIG. 2C , relative to  FIG. 2A , the adjustable cover assembly  30  has moved from a stowed position S to a deployed position D due to the linkage system  52  driving headrest bun  22  to the extended position E from the retracted position R. As shown in  FIG. 2C , the headrest assembly  20  of the present invention provides a large range of extension of the headrest bun  22  in a forward direction F relative to the housing  24 , thereby providing enhanced comfort for a vehicle occupant. As further shown in  FIG. 2C , while the headrest bun  22  is in the forward most position E, the adjustment mechanisms of the headrest assembly  20 , that provide for this horizontal extension, are substantially concealed by the adjustable cover assembly  30  and the housing  24 . With the adjustment mechanisms concealed, the headrest assembly  20  of the present invention provides for a more pleasing aesthetic relative to adjustable headrest assemblies known in the marketplace. Thus, the adjustable cover assembly  30  is operable between stowed and deployed positions S, D ( FIGS. 2A and 2C , respectively) depending on the extended position of the linkage system  52  and the headrest bun  22 . It is contemplated that the headrest bun  22  can move forward relative to the housing  24  about 50 mm to the extended position E from retracted position R. Other ranges of forward movement are also contemplated. 
     Referring now to  FIG. 3A , a cross-section of the headrest assembly  20  is shown in the home position H with the housing  24  removed to reveal the adjustment mechanisms configured to power movement of the headrest bun  22  between the extended and retracted positions E, R ( FIGS. 2C, 2A , respectively). The headrest bun  22  is shown coupled to a support plate  40  which is adjustably coupled to a mounting plate  42  disposed within the housing  24  in the configuration of  FIG. 3A . The headrest bun  22  is vertically adjustable along the path as indicated by arrow V by a channel and rail arrangement  44  disposed between the support plate  40  and mounting plate  42 . The channel and rail arrangement  44  between the headrest bun  22  and the mounting plate  42  is contemplated to be an arrangement utilizing multiple channels and multiple rails received therein. As shown in  FIG. 3A , a channel  46  is coupled to the mounting plate  42  on a front side  42   a  of the mounting plate  42 , and configured to slideably receive a rail  48  therein. The rail  48  is coupled to the support plate  40 . Vertical movement of the headrest bun  22  is contemplated to be powered by an adjustment mechanism, shown in the form of a linear actuator A 2 . 
     As further shown in  FIG. 3A , the mounting plate  42  further includes a rear side  42   b  having outwardly extending brackets  50 . The brackets  50  are contemplated to be twin brackets which rearwardly extend from the rear side  42   b  of the mounting plate  42  as best shown in  FIGS. 4C and 4D . The brackets  50  serve as a pivoting attachment location for the linkage system  52 . Given the cross-sectional view of  FIG. 3A , only a portion of the linkage system  52  is shown, however, it is contemplated that the linkage system  52  will be understood by one of ordinary skill in the art as shown in  FIG. 3A , and better shown in  FIGS. 4A-4D  as further described below. The linkage system  52  may be a four bar linkage system having various sized links. One or more links may have multiple pivoting locations to provide a multiple link system operating as a reinforced four bar linkage between fore and aft positions. The linkage system  52  is contemplated to translate the headrest bun  22  between an extended position E, as shown in  FIG. 2C , and a retracted position R, as shown in  FIGS. 2A and 3A . The linkage system  52  is comprised of a plurality of links which are rigid members pivotally connected to one another as further described below. 
     As further shown in  FIG. 3A , the linkage system  52  includes a front or first link  54 , which may be described as an output link, having an upper portion  56  which is pivotally coupled to a bracket  50  of mounting plate  42  at pivot point P 1 . The first link  54  is contemplated to be one of a pair of front links which are interconnected by a cross member  58  to form a unitary front link assembly. A second or rear link  60 , which may be described as an input link, is further shown in  FIG. 3A  having an upper portion  62  which is pivotally coupled to bracket  50  of the mounting plate  42  at pivot point P 2 . Much like the first link  54 , the second link  60  is contemplated to be one of a pair of rear links which are interconnected by a cross member  64 . Cross member  64  is shown in  FIG. 3A  in the form of a plate connecting the rear links  60  of the linkage system  52  to define a unitary rear link assembly. Thus, the mounting plate  42  and the brackets  50  act as a coupler for the output link (first link  54 ) and input link (second link  60 ) in the linkage system  52 . The linkage system  52  is configured to guide the movement of the headrest bun  22  from the retracted position R to a range of forward positions disposed along the path as indicated by arrow F. The movement of the headrest bun  22  between extended and retracted positions along the path as indicated by arrow F is powered by an adjustment mechanism shown in the form of a linear actuator A 1 , which is configured to drive the linkage system  52  between fore and aft positions. The first link  54  and the second link  60  are further pivotally coupled to a base plate  70  at pivot points P 3 , P 4 , respectively. Pivot point P 3  is better shown in  FIGS. 4A and 4B . The base plate  70 , which can be described as a ground link, is contemplated to extend in a substantially horizontal manner between the pairs of first and second links  54 ,  60 . In  FIG. 3A , a lower portion  66  of second link  60  is shown as coupled to a first side  72  of the base plate  70  at pivot point P 4 , better shown in  FIG. 3C . As noted above, the first link  54 , second link  60 , and base plate  70  all define links of the linkage system  52  that are rigid members pivotally coupled to one another. 
     As further shown in  FIG. 3A , the first actuator A 1  is coupled to a bracket  80  which is further coupled to a bottom wall  74  of the base plate  70 . The bracket  80  is contemplated to be a connecting bracket which pivotally couples the first actuator A 1  at a pivot point P 5  that is driven by, yet independent of, the linkage system  52 . The first actuator A 1  includes a motor  82  which is operably coupled to a spindle or threaded member  84 . The threaded member  84  is configured to be driven by the motor  82  in a direction as indicated by arrow  86 , such that first actuator A 1  is a linear actuator. A connecting tab  88  is disposed on an upper portion of the threaded member  84  and is pivotally connected to a connecting bracket  68  extending outwardly from the cross member  64  of the second link  60  at pivot point P 6 . With the headrest bun  22  in the retracted position R, the first actuator A 1  is configured to drive the threaded member  84  downward in the direction as indicated by arrow  86  using the motor  82  which is threadingly engaged with the threaded member  84  to extend the headrest bun  22 . In this way, the first actuator A 1  is configured to drive the headrest bun  22  forward as indicated by arrow F by drawing the linkage system  52  downward and forward. As the threaded member  84  is driven downward in a direction as indicated by arrow  86 , the coupling of the connecting tab  88  to connecting bracket  68  of the second link  60  draws the second link  60  downward to drive the four bar linkage system  52  in the forward and downward direction, as further shown in  FIGS. 3B-3D . The base plate  70  of the linkage system  52  is contemplated to be a stationary base plate that is pivotally connected to the first and second links  54 ,  60  at pivot points P 3  and P 4 . With the upwardly extending connecting bracket  80  providing an independent pivoting location P 5  for the first actuator A 1 , the first actuator A 1  has a stand-alone pivot location relative to the linkage system  52 . In this way, the first actuator A 1  can pivot as necessary, in an independent manner relative to the linkage system  52 , as the linkage system  52  translates forward and back as the position of the headrest bun  22  is adjusted by a user. 
     Referring now to  FIG. 3B , the headrest bun  22  is shown in a forward position F 1  which is similar to position F 1  shown in  FIG. 2B . Thus, the spacing S can now be seen between the headrest bun  22  and cross member  58  of the first link  54 . In  FIG. 3B , the threaded member  84  has been driven by the motor  82  of the first actuator A 1  in a downward direction as indicated by arrow  86  to a position X. In this way, the linkage system  52  has been driven by the first actuator A 1  to a forward position X from the home position H shown in  FIG. 3A . In moving the headrest bun  22  to the forward position F 1 , the threaded member  84  moves from the home position H ( FIG. 3A ) to the position X shown in  FIG. 3B . Similarly, the linkage system  52  moves from the home position H shown in  FIG. 3A  to the translated position X shown in  FIG. 3B . It is contemplated that forward position F 1  of the headrest bun  22  as shown in  FIG. 3B  is approximately one-third of the forward range of movement of the headrest bun  22  of the present concept. 
     Referring now to  FIG. 3C , the headrest bun  22  is shown in an intermediate position F 2  that is forward of position F 1  shown in  FIG. 3B . In  FIG. 3C , the threaded member  84  has been driven by the motor  82  of actuator A 1  to a position Y which correlates to the linkage system  52  being translated to a forward position Y, thereby providing the increased spacing S shown in  FIG. 3C  relative to  FIG. 3B . In the intermediate position F 2 , the headrest bun  22  is contemplated to be approximately two-thirds forward with respect to the full range of motion of the headrest bun  22  as driven by the linkage system  52 . 
     Referring now to  FIG. 4A , the linkage system  52  of the headrest assembly  20  is shown with the housing  24  and the headrest bun  22  removed from the headrest assembly  20 . In  FIG. 4A , the linkage system  52  is in the home position or aft position H which represents a recessed or retracted position, wherein the headrest bun  22  would be disposed directly adjacent to the housing  24 , as shown in  FIG. 2A , and the linkage system  52  would be substantially concealed by and housed within the housing  24  ( FIG. 2A ). As further shown in  FIG. 4A , the mounting plate  42  is coupled to the support plate  40  and includes rearwardly extending dual brackets  50  having pivot points P 1 , P 2  for pivotally coupling the first link  54  and second link  60 . The second link  60  is shown pivotally coupled to the base plate  72  at pivot point P 4  and the first link  54  is shown pivotally coupled to the base plate  72  at pivot point P 3  disposed on a mounting bracket  73  extending upward from the base plate  72 . A support structure  90  is shown having support rods  26  extending therefrom for coupling the headrest assembly  20  to seatback frame member  28 . 
     Referring now to  FIG. 4B , the linkage system  52  is shown in the fully extended fore position Z, wherein the support plate  40  is fully extended away from the support structure  90 . In the fully extended position Z, the linkage system  52  reveals cross member  58  which interconnects twin pairs of the first links  54  as described above. The mounting plate  42 , the first and second links  54 ,  60 , and the base plate  72  are contemplated to be unitary parts which are rigid members that are pivotally connected to one another at pivot points (P 1 -P 4 ) to provide extension of the support plate  40  between retracted and extended positions. In the position shown in  FIG. 4B , the support plate  40  correlates to the headrest bun  22  being in the fully extended position E as shown in  FIG. 2C . In the fully extended or fore position Z, the linkage system  52  is concealed by a combination of the adjustable cover assembly  30  and the housing  24 , as shown in  FIG. 2C . 
     Referring now to  FIG. 4C , the headrest assembly  20  is shown with the linkage system  52  in the aft position H as similarly shown in  FIG. 4A . The second link  60  is shown as a unitary plate, wherein the dual second links  60  are interconnected by cross member  64 . In  FIG. 4C , the mounting plate  42  is shown having dual brackets  50  extending rearwardly therefrom for pivotally connecting the first and second links  54 ,  60  at pivot points P 1 , P 2 . 
     Referring now to  FIG. 4D , the linkage system  52  is in the fully extended fore position Z with the support plate  40  in the lowered position.  FIG. 4D  is a rear view of the headrest assembly  20  as shown in  FIG. 4B . In  FIGS. 4C and 4D , the second actuator A 2  is shown coupled to the mounting plate  42  for vertical movement of the support plate  40  in the direction as indicated by arrow V. As shown in  FIG. 4D , the second actuator A 2  is operably coupled to the support plate  40  through an access aperture  42   c  disposed through the mounting plate  42 . Thus, access aperture  42   c  is contemplated to be of sufficient vertical length to accommodate full vertical movement of the headrest bun  22 . 
     Referring now to  FIG. 5A , the headrest assembly  20  is shown in a home position H with the headrest bun  22  in the retracted position R. The housing  24  has been removed to show the adjustable cover assembly  30  in the stowed position S. As such, the linkage system  52  is contemplated to be in the aft position H best shown in  FIG. 4C . With the linkage system  52  in the aft position H, the first member  30   a  of the adjustable cover assembly  30  is partially received within the second member  30   b . With the adjustable cover assembly  30  in the stowed position S, the first member  30   a  is in its rearward most received position relative to second member  30   b . Further, when the adjustable cover  30  is in the stowed position S, the second member  30   b  is recessed into the housing  24  and fully concealed by the housing  24  as shown in  FIG. 2A . As noted above, and further described below with reference to  FIG. 12 , the first member  30   a  of the adjustable cover assembly  30  is coupled to the linkage system  52  at an upper portion of mounting plate  42 . The second member  30   b  of the adjustable cover assembly  30  is pivotally coupled to first member  30   a , as further described below with reference to  FIGS. 12 and 13A . As coupled together, the first member  30   a  is moveably associated with second member  30   b , in that when the first member  30   a  moves with the linkage system  52 , to which the first member  30   a  is coupled, the second member  30   b  will also move. 
     Referring now to  FIG. 5B , the adjustable cover assembly  30  is in a mid-position M, wherein it is contemplated that the linkage system  52  has moved from the aft position H shown in  FIG. 5A , to a forward position X shown in  FIG. 5B . In the forward position X shown in  FIG. 5B , the linkage system  52  has driven the headrest bun  22  to a forward position F 1 . In driving the headrest bun  22  to the forward position F 1 , the linkage system  52  has carried the first member  30   a  and second member  30   b  of the adjustable cover assembly  30  in a forward direction as best indicated relative to support structure  90  shown in  FIG. 5B . Thus, as compared to  FIG. 5A , wherein the second member  30   b  of the adjustable cover assembly  30  is in a first position A, the second member  30   b  of the adjustable cover assembly  30  is now in a second position B as shown in  FIG. 5B . Similarly, the first member  30   a  is shown in a first position A in  FIG. 5A , and is now shown in a second position B in  FIG. 5B . In position B, the first member  30   a  is extended outward from a partially nested position within the second member  30   b . Further, with the second member  30   b  in position B, the second member  30   b  is considered to be partially extending outward from the housing  24  in a manner as shown in  FIG. 2B . 
     As shown in  FIGS. 5A and 5B , the second member  30   b  includes an outwardly extending engagement flange  92  disposed around side and top portions of the second member  30   b . In assembly, the outwardly extending engagement flange  92  of the second member  30   b  is configured to engage an interior rim portion of the housing  24  at front shroud  24   a  as best shown in  FIG. 5F . With the adjustable cover assembly  30  in the mid-position M, it is contemplated that the engagement flange  92  of the second member  30   b  will be in contact with the interior rim of the front shroud  24   a  of the housing  24 . Contact between the front shroud  24   a  and the engagement flange  92  will close out any gaps into the housing  24  and cause the second member  30   b  of the adjustable cover assembly  30  to pivot in a direction as indicated by arrow  94  at pivot point P 7 . Pivot point P 7  represents a pivoted coupling between the first member  30   a  and the second member  30   b  of the adjustable cover assembly  30 , as further described below. 
     Referring now to  FIG. 5C , the adjustable cover assembly  30  is shown in the fully deployed position D with the headrest bun  22  in the fully extended position E. In the position shown in  FIG. 5C , it is contemplated that the linkage system  52  is in the fore position Z shown in  FIG. 4D . With the linkage system  52  driving the headrest bun  22  to the fully extended position E, the engagement flange  92  is contemplated to have retained the upper portion of the second member  30   b  against the interior rim portion of the front shroud  24   a  of the housing  24  to pivot the second member  30   b  from position B ( FIG. 5B ) to a rearwardly tilted position C shown in  FIG. 5C . Again, the pivoting of the second member  30   b  of the adjustable cover assembly  30  occurs at pivot point P 7 . Thus, the upper portion  96  of the second member  30   b  moves rearwardly in a path as indicated by arrow  98  as the second member  30   b  pivots in a direction as indicated by arrow  94  at pivot point P 7 . Again, this pivoting action occurs when engagement flange  92  engages an interior of the front shroud  24   a  of the housing  24  as the headrest bun  22  is driven to the extended position E by the linkage system  52 . 
     Referring now to  FIG. 5D , multiple positions of the second member  30   b  of the adjustable cover assembly  30  are shown as positions A, B and C superimposed over one another. Positions A, B and C represent the positions individually shown in  FIGS. 5A, 5B and 5C , respectively.  FIG. 5D  is used to show relative pivoting movement of the second member  30   b  of the adjustable cover assembly  30  at pivot point P 7  along the path as indicated by arrow  94 . 
     Referring now to  FIGS. 5E, 5F and 5G  the front shroud  24   a  of the housing  24  is shown having an opening  99  through which the adjustable cover assembly  30  outwardly extends. In  FIGS. 5E and 5F , the housing  24  is shown in a cross-sectional view to reveal an interior rim portion  100  disposed along the opening  99  of the front shroud  24   a . With specific reference to  FIG. 5E , the engagement flange  92  of the second member  30   b  is shown spaced away from the interior rim portion  100  of the front shroud  24   a  of the housing  24 . As the headrest bun  22  moves to the forward position F 1  shown in  FIG. 5F , the engagement flange  92  of the cover assembly  30  contacts and abuts an interior surface of the interior rim portion  100  of the front shroud  24   a  of the housing  24 . This engagement between the engagement flange  92  of the cover assembly  30  and the interior rim portion  100  of the housing  24  closes out the opening  99  of the front shroud  24   a  and further causes the second member  30   b  of the cover assembly  30  to pivot or rotate about pivot point P 7  in the direction as indicated by arrow  94 . During the pivoting movement of the second member  30   b , an upper portion  96  of the second member  30   b  is tilted rearwardly in a direction as indicated by arrow  98 . This pivoting motion continues as the headrest bun  22  is moved to the fully extended position E shown in  FIG. 5G . 
     Referring now to  FIGS. 6A and 6B , another embodiment of a vehicle seat  10   a  is shown having a headrest assembly  20   a  disposed in a home position H. The vehicle seat  10   a  includes a number of features akin to the vehicle seat  10  shown in  FIG. 1 , for which like reference numerals are included in  FIGS. 6A and 6B . Similarly, the headrest assembly  20   a  includes features similar to those found in the headrest assembly  20  shown in  FIG. 1 . The housing  24   c  of the headrest assembly  20   a  is a more substantial housing as compared to the housing  24  of the headrest assembly  20  of  FIG. 1 . The housing  24   c  of headrest assembly  20   a  provides a more fluid contour from the headrest assembly  20   a  to the seatback  18  in the embodiment shown in  FIGS. 6A and 6B . The headrest bun  22  of vehicle seat  10   a  is contemplated to be an adjustable headrest bun shown in  FIGS. 6A and 6B  in the home position H. The headrest bun  22  is contemplated to be moved via a linkage system similar to linkage system  52  described above. 
     Referring now to  FIG. 7A , a flexible cover member  130  is shown having a plate member  132  that is generally centrally located within a support frame  134 . The plate member  132  includes a front side  132 A and a rear side  132 B ( FIG. 7B ). The support frame  134  is contemplated to be integrally connected to the plate member  132  having a flexible joint  136  operably disposed therebetween. Having the flexible joint  136 , the plate member  132  is operable between extended and retracted positions as further described below with reference to  FIGS. 9A and 9B . As further shown in  FIGS. 7A and 7B , the support frame  134  includes first and second upright side members  138 ,  140  which are spaced-apart and interconnected by a lower connecting portion  142 . The upright side members  138 ,  140  upwardly extend from the lower connecting portion  142 . Together, the first and second upright side members  138 ,  140  and the lower portion  142  of the support frame  134  are rigid members defining a generally U-shaped configuration of the support frame  134  in which the plate member  132  is received. The flexible joint  136  is in the form of a living hinge disposed between a lower portion  132 C of the plate member  132  and connecting portion  142  of the support frame  134 . The flexible cover member  130  is contemplated to be a unitary member as shown in  FIGS. 7A and 7B  that may be injection molded to include the component parts noted above in a single cover member. 
     With further reference to  FIGS. 7A and 7B , a plurality of mounting slots  144  are disposed around the support frame  134  for connecting the support frame  134  to a vehicle seat as further described below. A pair of flexible connectors  150 ,  152  are operably coupled to the first and second upright side members  138 ,  140  of the support frame  134  and further connected to the plate member  132  at opposite sides thereof. The first and second flexible connectors  150 ,  152  each include retractable portions  154 ,  156 , respectively, which provide sufficient material to allow the plate member  132  to move between extended and retracted positions relative to the support frame  134 . The retractable portions  154 ,  156  shown in the embodiment of  FIGS. 7A-7C  include inwardly extending bunched material portions that can be stretched or straightened out to accommodate movement of the plate member  132  to the extended position from the retracted position. The flexible connectors  150 ,  152  are contemplated to be made of a soft polymeric material that is flexibly resilient and integrally molded with the plate member  132  and the support frame  134 . Having the flexible connectors  150 ,  152  disposed on opposite sides of the plate member  132 , the plate member  132  can stretch to an extended position as a headrest assembly is horizontally extended, and recover its design position or retracted position as the headrest assembly retracts to the home position. Given the flexibly resilient nature of the retractable portions  154 ,  156 , the plate member  132  will outwardly extend towards the extended position only as far as necessary as driven by the movement of an associated headrest assembly. 
     With specific reference to  FIG. 7B , the rear or inner surface  132 B of the plate member  132  is shown having a rigidifying member in the form of a molded-in stiffener  160  disposed thereon. The molded-in stiffener  160  includes a plurality of heat stacking features  162  that help provide structural rigidity to the plate member  132 . 
     Referring now to  FIG. 7C , the flexible cover member  130  is shown coupled to an inner surface  19 A of a closeout member  19  that is generally disposed at the upper portion  18   a  of the seatback  18  as shown in  FIG. 6A . The closeout member  19  is a trim component of the vehicle seat  10   a  disposed below the adjustable headrest assembly  20   a . Attachment clips  164  outwardly extend from the inner surface  19 A of the closeout member  19  and are received through fastening slots  144  disposed around the support frame  134  of the flexible cover member  130 . In this way, the flexible cover member  130  easily attaches to the seat assembly for covering components of a headrest assembly as further described below. The flexible cover member  130  is releasably coupled to the closeout member  19 , thereby providing selective access to various components of the headrest assembly for maintenance thereof. 
     Referring now to  FIG. 8A , the flexible cover member  130  is shown in a retracted position R as coupled to upper portion  18   a  of the seatback  18  at closeout member  19 . In the retracted position R, the flexible cover member  130  is in a substantially horizontal position, or more specifically, in a common plane with the seatback  18 . Thus, the flexible connectors  150 ,  152  are in a retracted or at-rest states. As further shown in  FIG. 8A , the closeout member  19  includes a relief portion  19 C which is configured to receive a portion of the linkage system  52  when the linkage system moves towards the fore position from the aft position. The flexible cover member  130  is coupled to the closeout member  19  at the relief portion  19 C to close off the relief portion  19 C and conceal the linkage system. With reference to  FIG. 8B , the flexible cover member  130  is shown in phantom, such that a lower portion  59  of the linkage system  52  is disposed directly against the rear or inner surface  132 B of the plate member  132 . The lower portion  59  of the linkage system  52  may be the cross member  58  shown in  FIG. 3A  as described above. Any other portion of the linkage system  52  may be in contact with the inner surface  132 B of the flexible cover member  130  for urging the flexible cover member  130  to an extended position as further described below. It is noted that in  FIGS. 8A and 8B , the headrest bun  22  has been removed to reveal the channel and rail arrangement  44  disposed on the mounting plate  42  of the linkage system  52 . 
     Referring now to  FIG. 9A , the flexible cover member  130  is shown in the retracted position R, wherein the plate member  132  is substantially horizontal and flexible connector  152  is in an at-rest position against the linkage system  52 . Flexible connector  150  is not shown in  FIGS. 9A and 9B , but presumed to function in a similar manner as flexible connector  152 . In the embodiment shown in  FIG. 9A , the linkage system  52  is contemplated to be in a home position H, such that the headrest bun  22  is in a retracted position R. Thus, in the configuration shown in  FIG. 9A , the linkage system  52  is akin to the position of the linkage system  52  shown in  FIGS. 3A, 4A and 4C . In  FIG. 9B , the linkage system  52  has translated outwardly to move the headrest bun  22  to a forward position F 1 , such that the linkage system  52  is in a forward position Y as further discussed above and also referenced in  FIG. 3C . In  FIG. 3C , the spacing S is shown between the cross member  58  of the first link  54 . In the embodiment shown in  FIG. 9B , the cross member  58  may comprise a part of the lower portion  59  ( FIG. 8B ) of the linkage system  52  that is configured to contact and urge the flexible cover member  130  to the extended position E shown in  FIG. 9B . In the extended position E, the flexible cover member  130  has the flexible connector  152  extended outwardly, such that the retractable portion  156  of the flexible connector  152  is pulled or stretched as the inner surface  132 B of the flexible cover member  130  is acted on by the lower portion  59  of the linkage system  52 . As the linkage system  52  returns from position Y ( FIG. 9B ) to the home or aft position H ( FIG. 9A ), it is contemplated that the retractable portion  156  of the flexible connector  152  will retract towards the at-rest position to bring the flexible cover member  130  back to the retracted position R. Thus, the flexible connectors  150 ,  152  are operable between stretched and at-rest positions. The flexible connector s  150 ,  152 , and particularly the retractable portions  154 ,  156  thereof, are resilient members that are biased towards the at-rest position. Due to this arrangement, the flexible cover member  130  is urged or biased towards the retracted position R by the flexible connectors  150 ,  152 , such that the flexible cover member  130  remains in continued contact with the linkage system  52  when the linkage system  52  begins to act on the inner surface  132 B of the plate member  132  by abutting the inner surface  132 B to move the plate member  132  to the extended position E ( FIG. 9B ) from the retracted position R ( FIG. 9A ). In the embodiments shown in  FIGS. 9A and 9B , the retractable portion  156  appears in an accordion-style configuration, however, it is contemplated that a more smooth or continuous portion of flexible elastic material may be used as shown in  FIGS. 7A-7C . 
     Referring now to  FIG. 10A , the headrest assembly  20  is shown with the headrest bun  22  in the extended position E, which correlates to the adjustable cover assembly  30  being in the deployed position D. Thus, the headrest bun  22  is extended outwardly from the housing  24  as driven by the linkage system  52  shown in  FIG. 10B . In  FIG. 10B , the headrest bun  22  has been removed to reveal the mounting plate  42  to which the headrest bun  22  is operably coupled. As noted above, the mounting plate  42  is a front part of the linkage system  52 . In  FIG. 10B , the linkage system  52  is in the full fore position Z. In  FIG. 10A , the linkage system  52  is substantially concealed by a combination of the adjustable cover assembly  30  and the housing  24 . When the linkage system  52  is in the aft position or home position H, the linkage system  52  is substantially concealed by the housing  24  and only partially concealed by the adjustable cover assembly  30  as shown in  FIG. 2A . 
     As noted above, the adjustable cover assembly  30  includes first and second members  30   a ,  30   b , wherein first member  30   a  is an inner member relative to second member  30   b , which is an outer member. First member  30   a  is generally telescopingly received in the outer second member  30   b  when the adjustable cover assembly  30  is in the stowed position S ( FIG. 2A ). As the linkage system  52  drives the headrest bun  22  outwardly to the extended position E, the first member  30   a  of the adjustable cover assembly  30  is also driven outwardly from a substantially concealed position within the housing  24  and a nested position within second member  30   b . This is due to the fact that the first member  30   a  is fixedly coupled to the linkage system  52 , as further described below. As shown in  FIG. 10B , a gap G exists between the first member  30   a  and the second member  30   b . The gap G disposed between the first and second members  30   a ,  30   b  is provided to present an aesthetically pleasing adjustable cover assembly  30 , wherein the telescoping motion of the first and second members  30   a ,  30   b  and the pivoting motion of the second member  30   b  is a smooth and continuous appearing motion. The gap G between the first member  30   a  and the second member  30   b  adds to the overall aesthetic of the adjustable cover assembly  30  and is maintained during movement of the adjustable cover assembly  30  from the stowed position S to the deployed position D, as further described below. 
     Turning now to  FIG. 11A , the housing  24  has been removed and the adjustable cover assembly  30  is shown in the deployed position D, such that the linkage system  52  is also in the Z position which correlates to a forward-most position of the linkage system  52 . The gap G is shown disposed between the first member  30   a  and second member  30   b  of the adjustable cover assembly  30  in  FIG. 11A  at an outer surface  190  of the first member  30   a . The gap G defines a clearing distance or spacing between the first and second members  30   a ,  30   b  to allow for independent movement of the first and second members  30   a ,  30   b . In  FIG. 11A , the pivot point P 7  is shown as defining a pivot access between the first and second members  30   a ,  30   b  for rotation of the second member  30   b  in the direction as indicated by arrow  94 . 
     Referring now to  FIG. 11B , the adjustable cover assembly  30  has been removed to reveal the linkage system  52  in the fore position Z. The mounting plate  42  of the linkage system  52  further includes an upper landing  170  having an oblong shaped slot  172  with a clip member  174  disposed therein. The upper landing portion  170  of the mounting plate  42  provides a connecting location for the first member  30   a  of the adjustable cover assembly  30 . As further shown in  FIG. 11B , a biasing mechanism  180 , in the form of a spring, is shown coupled to a mounting aperture  176  disposed at a rear portion of the upper landing  170 . The biasing mechanism  180  is contemplated to couple to an inner surface of the second member  30   b  of the adjustable cover assembly  30  for biasing the second member  30   b  of the adjustable cover assembly  30  towards an extended position as the mounting plate  42  is driven outwardly by the linkage system  52 . 
     Referring now to  FIG. 12 , the first and second members  30   a ,  30   b  of the adjustable cover assembly  30  are shown exploded away from the linkage system  52 . In  FIG. 12  the linkage system  52  is shown in the aft position or home position H. As further shown in  FIG. 12 , the biasing mechanism  180  includes a first end  182  and a second end  184 . The first end  182  is configured to couple to the mounting aperture  176  on the upper landing portion  170  of the mounting plate  42 . The second end  184  is configured to couple to a mounting tab  186  of the second member  30   b  as best shown in  FIG. 13A . As further shown in  FIG. 12 , the first member  30   a  includes a generally inverted U-shaped configuration having an outer surface  190  and an inner surface  192 . The inverted U-shaped configuration of the first member  30   a  is defined by first and second side portions  194 ,  196  which are interconnected by a top portion  198 . The top portion  198  includes a downwardly extending mounting tab  200  disposed on the inner surface  192  of the top portion  198 . The mounting tab  200  is configured to receive the clip member  174  for clipping the first member  30   a  to the upper landing portion  170  of the linkage system  52 . The first and second side portions  194 ,  196  further include inwardly extending mounting bosses  202 . In  FIG. 12 , mounting boss  202  disposed on side portion  194  is shown, while a similar mounting boss is contemplated to be disposed on the second side portion  196  at an inner surface  192  thereof. The mounting bosses  202  of the first member  30   a  are contemplated to be received in mounting apertures  204  disposed on the rearwardly extending brackets  50  of the mounting plate  42  of the linkage system  52 . Thus, in the embodiment shown in  FIG. 11A , the first member  30   a  is contemplated to be fixedly coupled to the linkage system  52  via the connection between the mounting tab  200  and clip member  174  with oblong slot  172  of the upper landing portion  170  of the mounting plate  42 , and further by the connection of the mounting bosses  202  with the mounting apertures  204  of the rearwardly extending brackets  50 . The lower rear portions of the first and second side members  194 ,  196  include pivot apertures  206 ,  208  for pivotally coupling the second member  30   b  to the first member  30   a . Guide slots  210 ,  212  are elongate slots that are disposed above the pivoting apertures  206 ,  208  as shown in  FIG. 12 . The guide slots  210 ,  212  are configured to receive guide members disposed on the second member  30   b , as further described below. 
     As further shown in  FIG. 12 , the second member  30   b  also includes a generally inverted U-shaped configuration with an outer surface  220  and an inner surface  222 . The inverted U-shaped configuration of the second member  30   b  is defined by first and second side portions  224 ,  226  which are interconnected by a top portion  228 . A rearmost edge of the top portion  228  includes the outwardly extending engagement flange  92  which extends from the outer surface  220  of the second member  30   b  along the top portion  228  and the first and second side portions  224 ,  226 . As noted above, the engagement flange  92  is configured to abut a portion of the housing of the headrest assembly for pivoting movement of the second member  30   b  as the headrest bun extends forward. The second member  30   b  further includes guide members  230  which are configured to be received in the guide slots  210 ,  212  of the first member  30   a . In FIG.  12 , guide member  230  is disposed on the inner surface  222  of the first side portion  224  and extends inwardly. It is contemplated that the second side portion  226  also includes a guide member such as guide member  230  for coupling to guide slot  212  of the first member  30   a . Disposed below the guide member  230 , a pivot member  232  inwardly extends. It is further contemplated that side portion  226  also includes a pivot member  232 . The pivot members  232  of the second member  30   b  are contemplated to be received in the pivot apertures  206 ,  208  of the first member  30   a  to define the pivot axis at pivot point P 7  between the first and second members  30   a ,  30   b  as shown in  FIG. 11A . In the embodiment shown in  FIG. 12 , the pivot member  232  is shown in the form of a clip having spaced-apart engagement features  234 ,  236  which are flexibly resilient for fitting into the pivot apertures  206 ,  208  of the first member  30   a . Once received therein, the engagement features  234 ,  236  retain the second member  30   b  in a pivoting engagement with the first member  30   a . With the guide members  230  disposed in the guide slots  210 ,  212 , the pivoting motion of the second member  30   b  relative to the first member  30   a  is limited by the length of the guide slots  210 ,  212 , which are contemplated to be relatively short slots for restricting pivoting movement of the second member  30   b.    
     As noted above, the first and second members  30   a ,  30   b  of the adjustable cover assembly  30  are polymeric parts, such that the side portions  194 ,  196  and  224 ,  226 , respectively, can be spread-apart for properly mounting the first and second members  30   a ,  30   b . With specific reference to the first member  30   a , the first and second side portions  194 ,  196  can be spread outwardly, such that the first member  30   a  can fit over the top of the linkage system  52  and provide clearance for the mounting bosses  202  with respect to the rearwardly extending brackets  50  of the mounting plate  42 . In mounting the first member  30   a , the mounting bosses  202  will be received in the mounting apertures  204  of the rearwardly extending brackets  50  disposed on opposite sides of the linkage system  52 . The first and second side portions  194 ,  196  will resiliently return to their at-rest position shown in  FIG. 12  to connect the first member  30   a  with the linkage system  52  when the mounting bosses  202  are aligned with and received in the mounting apertures  204 . Further, downward movement of the first member  30   a  onto the linkage system  52  will correlate to the coupling of the first member  30   a  with the oblong aperture  172  of the upper landing portion  170  of the mounting plate  42 . In this way, the first member  30   a  of the adjustable cover assembly  30  is fixedly coupled to the linkage system  52 . 
     With further reference to  FIG. 12 , the second member  30   b  of the adjustable cover assembly  30  includes flexibly resilient side portions  224 ,  226 . These side portions  224 ,  226  can be spread-apart to provide clearance for mounting the second member  30   b  on the first member  30   a . Specifically, sufficient clearance is necessary in order to provide room for the guide member  230  and the pivot member  232  inwardly extending from both the first and second side portions  224 ,  226 . With the flexibly resilient first and second side portions  224 ,  226  spread apart from one another, clearance is provided to couple the pivot member  232  with the pivot apertures  206 ,  208  of the first member  30   a . Further, the guide members  230  will be received in the guide slots  210 ,  212  of the first member  30   a  as the second member  30   b  is positioned over the first member  30   a . Once properly aligned, the guide members  230  and pivot members  232  will be received within the guide slots  210 ,  212  and pivot apertures  206 ,  208 , respectively, and the flexibly resilient nature of the first and second side portions  224 ,  226  of the second member  30   b  will return to their at-rest position shown in  FIG. 12  from an outwardly flexed mounting position. 
     Referring now to  FIG. 13A , the first and second members  30   a ,  30   b  of the adjustable cover assembly  30  are shown exploded away from one another in a similar manner to that shown in  FIG. 12 . As noted above, the inverted U-shaped configuration of the second member  30   b  is defined by first and second side portions  224 ,  226  which are interconnected by a top portion  228  to further define an interior  246  of the second member  30   b  in which the first member  30   a  can partially nest. In the embodiment shown in  FIG. 13A , the mounting tab  200  of the first member  30   a  is clearly shown for receiving clip member  174 . Again, the mounting tab  200  and clip member  174  are used to fixedly couple the first member  30   a  to the linkage system  52  at mounting plate  42 . As further shown in  FIG. 13A , the biasing mechanism  180  is configured to couple to mounting tab  186  extending downwardly from the top portion  228  of the second member  30   b.    
     As further shown in  FIG. 13A , the mounting boss  202  includes a number of standoff features  203  disposed therearound for spacing the inner surface  192  of the first member  30   a  away from the rearwardly extending brackets  50  of the linkage system  52 . Disposed along a rear edge  199  of the first member  30   a , a plurality of spacers  240 ,  242  are disposed along the top portion  198  and first and second side portions  194 ,  196 , respectively. The spacers  240 ,  242  are inclined or wedged members which are configured to engage an interior rim portion  244  of the second member  30   b  as the first member  30   a  is moved forward by the linkage system  52 . The spacers  240 ,  242  are configured to engage the interior rim portion  244  of the second member  30   b  to maintain a gap G disposed between the first and second members  30   a ,  30   b  as described above with reference to  FIG. 10B  and  FIG. 11B . The engagement of the spacers  240 ,  242  of the first member  30   a  to the second member  30   b  is further described below with reference to  FIGS. 13B and 13C . 
     Referring now to  FIG. 13B , a cross-sectional view of the adjustable cover assembly  30  is shown with the first member  30   a  partially nested within an interior  246  of the second member  30   b . The gap G is shown disposed between the upper or outer surface  190  of the first member  30   a  and the inner surface  222  of the second member  30   b . In  FIG. 13B , the spacer  240  disposed on the top portion  198  of the first member  30   a  is positioned away from the interior rim portion  244  of the second member  30   b . As the linkage system  52  drives the first member  30   a  in a forward direction as indicated by arrow F, the spacer  240  approaches the interior rim portion  244  of the second member  30   b.    
     Referring now to  FIG. 13C , the interior rim portion  244  of the second member  30   b  is now in contact with the spacer  240  of the first member  30   a  for engagement therewith. The engagement of the spacer  240  with the interior rim portion  244  of the second member  30   b  causes the second member  30   b  to move in a forward direction as indicated by arrow F along with and carried by the movement of the first member  30   a . As noted above, when the first member  30   a  begins to move the second member  30   b  from a concealed position within the housing  24  of the headrest assembly  20 , the upwardly extending engagement flange  92  of the second member  30   b  will move towards engagement with the interior rim portion  100  of the housing  24  as best shown in  FIGS. 5E, 5F and 5G  for pivoting the upper portion  96  of the second member  30   b  relative to the first member  30   a . Again, the pivoting movement of the second member  30   b  relative to the first member  30   a  is a rearwardly pivoting movement at pivot point P 7  best shown in  FIG. 5G . 
     It will be understood by one having ordinary skill in the art that construction of the described invention and other components is not limited to any specific material. Other exemplary embodiments of the invention disclosed herein may be formed from a wide variety of materials, unless described otherwise herein. 
     For purposes of this disclosure, the term “coupled” (in all of its forms, couple, coupling, coupled, etc.) generally means the joining of two components (electrical or mechanical) directly or indirectly to one another. Such joining may be stationary in nature or movable in nature. Such joining may be achieved with the two components (electrical or mechanical) and any additional intermediate members being integrally formed as a single unitary body with one another or with the two components. Such joining may be permanent in nature or may be removable or releasable in nature unless otherwise stated. 
     It is also important to note that the construction and arrangement of the elements of the invention as shown in the exemplary embodiments is illustrative only. Although only a few embodiments of the present innovations have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters, mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter recited. For example, elements shown as integrally formed may be constructed of multiple parts or elements shown as multiple parts may be integrally formed, the operation of the interfaces may be reversed or otherwise varied, the length or width of the structures and/or members or connector or other elements of the system may be varied, the nature or number of adjustment positions provided between the elements may be varied. It should be noted that the elements and/or assemblies of the system may be constructed from any of a wide variety of materials that provide sufficient strength or durability, in any of a wide variety of colors, textures, and combinations. Accordingly, all such modifications are intended to be included within the scope of the present innovations. Other substitutions, modifications, changes, and omissions may be made in the design, operating conditions, and arrangement of the desired and other exemplary embodiments without departing from the spirit of the present innovations. 
     It will be understood that any described processes or steps within described processes may be combined with other disclosed processes or steps to form structures within the scope of the present invention. The exemplary structures and processes disclosed herein are for illustrative purposes and are not to be construed as limiting. 
     It is also to be understood that variations and modifications can be made on the aforementioned structures and methods without departing from the concepts of the present invention, and further it is to be understood that such concepts are intended to be covered by the following claims unless these claims by their language expressly state otherwise.