Abstract:
An assembly fixture allows for the incorporation of a decorative trim piece into an encapsulated window assembly. A method of utilizing the assembly fixture to incorporate the decorative trim piece into the vehicle window assembly is also provided.

Description:
RELATED APPLICATION 
       [0001]    This application is claiming the benefit, under 35 U.S.C. 119(e) of the provisional application filed Mar. 24, 2011 under 35 U.S.C. 111(b), which was granted Ser. No. 61/467,007. This provisional application is hereby incorporated herein by reference, in its entirety. 
     
    
     BACKGROUND OF THE INVENTION 
       [0002]    The present invention relates to a vehicle window assembly fixture. More particularly, the present invention relates to an assembly fixture for incorporating a decorative trim piece as a component of an encapsulated vehicle window assembly and a method of utilizing the fixture. 
         [0003]    Various methods of incorporating decorative trim pieces into vehicle window assemblies have been utilized. Such methods have attempted to solve common problems of handling decorative trim pieces which are relatively easily damaged. For example, some decorative metal trim pieces may have highly polished outer or “show” surfaces which are relatively easily scuffed or scratched. It has also proven difficult to incorporate decorative trim members into vehicle window assemblies so that they remain securely affixed over a long period of time. Some methods to address the foregoing, problems are very labor intensive, and thus, add significant cost to the production of the window assembly. 
         [0004]    Accordingly, it would be advantageous to have a relatively automated method of incorporating a decorative trim piece into a vehicle window assembly in a reliable, cost-effective manner. 
       SUMMARY OF THE INVENTION 
       [0005]    The present invention relates to a vehicle window assembly fixture. More specifically, the present invention relates to an assembly fixture for incorporating a decorative trim piece as a component of an encapsulated vehicle window assembly. A method of utilizing the fixture is also a part of the invention. 
         [0006]    The assembly fixture of the invention performs a number of assembly operations to incorporate at least one decorative trim piece into a vehicle window assembly, which includes a vehicle window having an elastomeric member, such as a frame or gasket, around at least a portion of the periphery thereof. The vehicle window assembly in this unfinished form is placed on one or more supporting members of the fixture, and is positioned so that portions of the window assembly upon which assembly operations are to be performed are proximate those components of the fixture which perform the desired operations. A decorative trim piece is then positioned on the encapsulated vehicle window assembly previously disposed on the assembly fixture. Assembly operations may include, although different assembly operations are possible: Securing the encapsulated vehicle window assembly in place on the fixture, preferably by vacuum means, pressing the decorative trim piece against the elastomeric member so that attachment tabs which are part of the trim piece extend through slots in the elastomeric member from the underside of the encapsulated window assembly, crimping the attachment tabs so that they lock the trim piece into the elastomeric member, trimming excess encapsulation materials off the underside of the window assembly at one or more locations where the encapsulation material was injected during the process of molding the elastomeric member, and removing the finished encapsulated window assembly with incorporated decorative trim piece from the fixture for ultimate installation in a vehicle body opening. 
         [0007]    Components of the assembly fixture which perform the possible assembly operations noted above include: at least one positioning block, at least one resilient vertical support member, at least one trim piece tab crimping vice, at least one encapsulation material trimming device and at least one trim piece setting device. These components will be described in greater detail in subsequent portions of this application. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0008]    The above as well as other advantages of the present invention will become readily apparent to those skilled in the art from the following detailed description when considered in the light of the accompanying drawings in which: 
           [0009]      FIG. 1  shows a perspective view of the encapsulated vehicle window assembly fixture according to the invention. 
           [0010]      FIGS. 2   a  and  2   b  show perspective views of the trim piece attachment crimping vice according to the invention. 
           [0011]      FIG. 3  shows a perspective view of the encapsulation material trimming device according to the invention. 
           [0012]      FIG. 4  shows a perspective view of the trim piece setting device according to the invention. 
           [0013]      FIG. 5  shows a plan view of the outer surface of the encapsulated vehicle window assembly prior to incorporation of the decorative trim piece. 
           [0014]      FIG. 6  shows a plan view of the inner surface of the encapsulated vehicle window assembly prior to incorporation of the decorative trim piece. 
           [0015]      FIG. 7  shows a perspective view of the outer “show” surface of an exemplary decorative trim piece. 
           [0016]      FIG. 8  shows a perspective view of the inner engaging surface of an exemplary decorative trim piece. 
           [0017]      FIG. 9  shows the encapsulated window assembly placed on the assembly fixture ready for incorporation of a decorative trim piece according to the invention. 
           [0018]      FIG. 10  shows a perspective view of an encapsulated window assembly having an optional male snap-on block feature, placed on the assembly fixture for incorporation of a decorative trim piece according to the invention. 
           [0019]      FIG. 11  shows a perspective view of the decorative trim piece being affixed to the encapsulated vehicle window assembly by operation of the assembly fixture according to the invention. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0020]    The present invention relates to a vehicle window assembly fixture  10 . More specifically, the present invention relates to an assembly fixture  10  for incorporating a decorative trim piece  12  as a component of an encapsulated vehicle window assembly  14 , as well as a method of utilizing the assembly fixture  10  to produce a finished part. 
         [0021]    The assembly fixture  10  of the invention has been found to be advantageous in repeatably and securely incorporating a decorative trim piece  12  into an encapsulated vehicle window assembly  14  in a significantly shorter time than can be achieved by, for example, manual assembly methods. Time and labor savings result in substantial reduction in production cost of the vehicle window assembly  14  with decorative trim piece  12  incorporated therein. Use of the assembly fixture  10  of the invention has also been shown to cause minimal damage to the decorative trim piece  12  compared to other methods, thus reducing re-work and scrap rates. Such reductions create additional cost savings. 
         [0022]      FIG. 1  shows substantially the entire assembly fixture  10  according to the invention. Not shown are system control devices, sources of positive and negative gaseous pressure, sources of hydraulic pressure and/or electrical power and the like, as these functions can be accomplished by any suitable, conventional means. 
         [0023]    The assembly fixture of the invention, preferably includes a substantially flat base member  16  having at least one major surface  18  of any suitable geometric shape, and made from any suitable material, but preferably from metal, for example, aluminum or steel affixed in predetermined positions on the base member  16 , and positioned so as to be operably proximate predetermined portions of an encapsulated vehicle window assembly  14  placed on the assembly fixture  10  are:
       at least one positioning block  20  having any suitable geometric shape and made from any suitable material, but preferably from metal, for example, aluminum or steel;   at least one vertical support member  22  having a resilient contact portion  24 , for example, a suction cup-like structure through which a negative gaseous pressure is preferably transmitted;   at least one trim piece tab crimping vice  26 , having a pair of jaws  28 , preferably, made from a hard metal such as steel, at least one jaw being movable along a prescribed path in an orientation generally parallel to the base member  16 , which movable jaw is driven along such path by a suitable method, so as to be capable of exerting a sufficient crimping force (see  FIG. 2 );   at least one encapsulation material trimming device  30  having one or more trimming blades  32  made from any material suitable for removing excess elastomeric material in a clean and complete manner, preferably a metal, such as steel (see  FIG. 3 );   at least one trim piece setting device  34  having a base  36  upon which is mounted a movable swing-arm type mechanism  38  to which swing-arm mechanism  38  is mounted a trim piece setting paddle  40 , the above-noted components preferably made from a suitable metal, except for the portion of the setting paddle  40  which pressingly engages with the decorative trim piece  12 , this engaging portion  42  being made from a soft material which will not cause damage to the surface of the decorative trim piece  12  (see  FIG. 4 ).       
 
         [0029]    The assembly fixture  10  of the invention is controlled by one or more control devices of any suitable type, but preferably electronic controllers. The various components just described are actuated by one or more of electrical, hydraulic, and pneumatic systems, or combinations thereof. 
         [0030]    It has been found to be advantageous to include one or more air cleaning devices  44  located proximate the at least one encapsulation material trimming device  30 . Such air cleaning devices  44  preferably utilize compressed air to remove the elastomeric material trimmed from the vehicle window assembly  14  from the vicinity of the one or more trimming blades  32  of the encapsulation material trimming device  30  to ensure the trimming blades  32  are clean each time they are actuated, and therefore, function effectively (see  FIGS. 1 and 3 ). 
         [0031]    To ensure that the elastomeric material blown by the air cleaning device  44  does not lodge in undesired areas of the assembly fixture  10  causing equipment malfunctions or product defects, it has been found to be desirable to dispose one or more protective coverings  46 , preferably made of a flexible plastic material, in the vicinity of the air cleaning system  44 . It will be noted that the one or more trimming blades  32  should be allowed to protrude through any protective covering  46  in the immediate vicinity of the trimming blades  32 , so as to allow for their operation (see  FIGS. 1 and 3 ). 
         [0032]    A representative method of assembling an encapsulated vehicle window assembly  14  including a decorative trim piece  12  utilizing the assembly fixture  10  of the invention will now be described, although other methods of operating the fixture  10  may be possible within the scope of the invention. 
         [0033]    An assembly fixture  10  is provided, the assembly fixture  10  comprising:
       a base member  16 , preferably being substantially flat although other shapes may also be suitable, having affixed to major surface  18  thereof in predetermined positions thereon;   at least one positioning block  20 ;   at least one resilient vertical support member  22  connected to a source of negative gaseous pressure;   at least one trim piece tab crimping vice  26  having a pair of jaws  28 , at least one of which is movable;   at least one encapsulation material trimming device  30  having one or more trimming blades  32 ; and   at least one trim piece setting device  34  having a movable setting paddle  40 .       
 
         [0040]    Onto the assembly fixture  10 , in supported contact with the at least one positioning block  20  and the at least one resilient vertical support member  22  at a predetermined distance above the base member  16 , is placed an encapsulated window assembly  14  having:
       an inner surface  48  and an outer surface  50 ; (see  FIGS. 6 and 5 )   the outer surface  50  being capable of receiving a decorative trim piece  12 ;   the decorative trim piece  12  having an outer show surface  52  and an inner engaging surface  54  having one or more attachment tabs  55  extending therefrom (see  FIGS. 7 and 8 );   an elastomeric member  56  bonded to at least a portion of a peripheral region  58  of one or more of the inner  48  and outer  50  surface of the vehicle window portion of the vehicle window assembly  14 ;   the elastomeric member  56  having trim piece tab receiving slots  60  formed therein (see  FIGS. 5 and 6 );   at least one vehicle body positioning pin  62  molded onto the inner surface  48  of the vehicle window portion of the vehicle window assembly  14 , inboard of the elastomeric member  56  (see  FIG. 6 ).       
 
         [0047]    With the vehicle window assembly  14  just described positioned on the at least one positioning block  20  and the at least one resilient vertical support member  22 , certain portions of the encapsulated vehicle window assembly  14  are thereby positioned relative to the above-described operational components of the assembly fixture  10  (see  FIG. 9 ) as follows:
       at least a portion of the inner surface  48  of the encapsulated window assembly  14  is proximate the movable jaw(s)  28  of the at least one trim piece tab crimping vice  26 ;   at least one area inboard of the elastomeric member  56  on the inner surface  48  of the window assembly  14 , and proximate the at least one molded-on vehicle body positioning pin  62  is proximate the one or more trimming blades  32  of the at least one encapsulation trimming device  30 ;   at least a portion of the periphery  58  of the outer surface  50  of the encapsulated window assembly  14  capable of receiving the decorative trim piece  12  is proximate the movable setting paddle  40  of the at least one trim piece setting device  34 .       
 
         [0051]    With the encapsulated vehicle window assembly  14  properly positioned on the assembly fixture  10 , the negative gaseous pressure source is actuated through the at least one resilient vertical support member  22  so as to cause the encapsulated vehicle window assembly  14  to be drawn by the vacuum to adhere to at least the resilient vertical support member  22 , thus maintaining the vehicle window assembly  14  in the desired position on the fixture  10  during the application of the decorative trim piece  12 . 
         [0052]    The inner engaging surface  54  of the decorative trim piece  12  is then placed in pre-attachment contact with the outer surface of the elastomeric member  56  so that the trim piece attachment tabs  55  are aligned with the trim piece attachment tab receiving slots  60  in the elastomeric member  56  of the encapsulated vehicle window assembly  14 . 
         [0053]    The movable setting paddle  40  of the at least one trim piece setting device  34  is then actuated, causing the movable setting paddle  40  to pressingly engage a predetermined portion of the outer surface  52  of the decorative trim piece  12 . Such pressing engagement causes the trim piece attachment tabs  55  to extend through the trim piece attachment tab receiving slot(s)  60  and the inner engaging surface  54  of the decorative trim piece  12  to come into seating contact with a predetermined portion of the outer surface  50  of the elastomeric member  56  of the window assembly. 
         [0054]    Depending on the specific part which is being assembled, it may be desirable to actuate the at least one trim piece tab crimping vice  26  and the at least one encapsulation material trimming device  30  either simultaneously or, in the alternative, sequentially. Whichever mode of operation is chosen, the actuation of the trim piece tab crimping vice  26  causes the jaws  28  thereof to crimpingly close about the distal end of the trim piece attachment tab  55  extending through the at least one trim piece attachment tab receiving slot  60 , so as to lockingly secure the trim piece attachment tab  55  in the trim piece attachment receiving slot  60 . Likewise, whichever mode of operation, simultaneous or sequential, is used, actuation of the at least one encapsulation trimming device  30  causes the at least one trimming blade  32  of the encapsulation material trimming device  30  to scrapingly remove undesired encapsulation material from at least one area inboard of the elastomeric member  56  on the inner surface  48  of the window assembly proximate the at least one molded-on vehicle body opening positioning pin  62 . At this point in the assembly process, the decorative trim piece  12  is substantially incorporated into the encapsulated vehicle window assembly  14 . 
         [0055]    The negative gaseous pressure previously applied to hold the encapsulated vehicle window assembly  14  in place on the fixture  10  can now be discontinued. The encapsulated vehicle window assembly  14  with attached/incorporated decorative trim piece  12  may now be removed from the assembly fixture  10 . 
         [0056]    The encapsulated vehicle window assembly  14  with decorative trim piece  12  may then, for example, be directly installed to close an opening in a vehicle body, may be stored, or may be shipped to a remote vehicle manufacturing facility for installation in a vehicle body opening. 
         [0057]    It may be desirable to even more positively attach the decorative trim piece  12  to the elastomeric member portion  56  of the encapsulated vehicle window assembly  14 . For example, as shown in  FIG. 10 , at least one male snap-on block  64  having any desired geometric shape is disposed in a predetermined location on the outer surface  50  of the elastomeric member  56 , and at least one flexible female snap-on block receiving feature  66  is disposed on the inner engaging surface  54  of the decorative trim piece  12  so as to be engageable with the at least one male snap-on block  64 . When the movable setting paddle  40  of the at least one trim piece setting device  34  is actuated, the at least one flexible female snap-on block receiving feature  66  lockingly engages with the at least one male snap-on block  64 , thus creating additional points of engagement between the decorative trim piece  12  and the elastomeric member  56  of the encapsulated vehicle window assembly  14 . 
         [0058]    In some instances, to minimize the possibility of the trim piece attachment tab  55  of the decorative trim piece  12  being dislodged from the elastomeric member of the encapsulated vehicle window assembly, a reinforcing member may be molded into the elastomeric member  56  in a position such that the trim piece attachment tab(s)  55  will be pressed through openings in the reinforcing member and lockingly secured therethrough, as has previously been described herein. In this configuration, the decorative trim piece  12  is even more positively attached to the encapsulated vehicle window assembly  14 . 
         [0059]    The assembly fixture  10  of the invention could also be utilized to pressingly adhesively bond a decorative trim piece  12  onto the encapsulated vehicle window assembly  14 , where a suitable adhesive, in whatever form, is disposed, for example, on the engaging surface  54  of the decorative trim piece  12 , or on the outer surface  50  of the elastomeric member  56 . 
         [0060]    It is also within the scope of the invention that magnetic means may be employed to maintain or assist in maintaining the encapsulated vehicle window assembly  14  in a desired pre-assembly position on the assembly fixture  10 . 
         [0061]    In accordance with the provisions of the patent statutes, the present invention has been described in what is considered to represent its preferred embodiments. However, it should be noted that the invention can be practiced otherwise than as specifically illustrated and described without departing from its spirit or scope.