Patent Publication Number: US-8522485-B2

Title: Vehicle sash door and protector and center channel for the same

Description:
This application is a divisional of U.S. patent application Ser. No. 12/330,801 filed Dec. 9, 2008. 
    
    
     BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to a vehicle sash door and a protector and a center channel for the sash door, particularly a vehicle sash door including a center channel which guides ascents and descents of a window glass and a protector attached to the center channel or the like. 
     2. Description of the Related Art 
     A vehicle sash door includes a main sash, and a center channel partitioning window frames together with the main sash and guiding a window glass arranged in a partition of the window frames in such a way that the window glass is vertically movable. An upper end of the center channel is jointed to a lateral sash part of the main sash or main channel to thereby form a T-shape. 
     There is provided a special coupling member between the center channel and the lateral sash part, for example, as described in Japanese Patent Laid-Open Publication No. 61-218423. The coupling member includes a protector for the upper end of the center channel. The protector is formed by a special sealing member. Adhesion parts of the protector are sticked by adhesion means such as specified glue or a double-coated adhesive tape. 
     SUMMARY OF THE INVENTION 
     It is an object of the present invention to provide a vehicle sash door capable of omitting the above adhesion means, being easily assembled and finely finished. 
     One aspect of the present invention is a center-channel protector for a vehicle sash door which is arranged between a main sash and a center channel having an H-shaped upper-end surface so as to cover the upper end of the center channel. A body of the protector forms an H-shaped bottom surface which is compatible to cover the upper-end surface of the center channel. The body integrally includes a pair of branch covering portions corresponding to a pair of branch portions constituting the center channel, a middle covering portion disposed between the branch covering portions so as to connect the both branch covering portions therewith, and an engaging portion engages with an engaged portion which is provided with a center channel side in a direction intersecting a vertical direction. The engaging portion constitutes a fastening mechanism by which the protector is mechanically fastened to the center channel in collaboration with the engaged portion. 
     According to the present invention, the protector of which body has the H-shaped plane is attached to the center channel so that the upper end of the center channel is covered therewith, thereby protecting the upper end of the center channel. Additionally, the fastening mechanism mechanically fastens the attached protector onto the center channel. Without any adhesion means, a vehicle sash door in which the protector protects the center channel can sustain a firm fastening conditions over a relatively long period of time. Therefore, even if the vehicle sash door is in a semi-fabricated product, transportations of such the product would be conducted without any damage of the upper-end part of the center channel, provided that the product has the protector. In addition, although the present invention does not preclude the use of adhesion means, such an omission would be preferable because it makes free from disadvantages, such as an adhesive stains of peripheral members caused by leaking out or the like, an adhesive deteriorates which would cause the protector to be fallen off or detached. 
     In contrast, the indispensable use of the adhesion means in the prior art as described above, could lead disadvantages such as disconnection of the protector due to the delamination of adhesive parts which would occur in certain instances of adhesive conditions or the deteriorations with time. Furthermore, the glue could be forced and leaked out, thereby spoiling the exterior appearance or causing such another. 
     These and other objects, features and advantages of the present invention will become more apparent upon reading of the following detailed description along with the accompanied drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a schematic view showing the whole configuration of a vehicle sash door according to the present invention; 
         FIG. 2  is a perspective exploded view showing a configuration around a protector attachment part according to a first embodiment of the present invention; 
         FIG. 3  is a vertical sectional view showing how to attach a protector according to the first embodiment; 
         FIG. 4  is a perspective developed view partially showing a configuration around a protector attachment part according to a second embodiment of the present invention; 
         FIGS. 5A and 5B  are vertical sectional views showing how to attach a protector according to the second embodiment; and 
         FIG. 6  is a vertical sectional view showing a variation of the protector according to the second embodiment. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     With reference to  FIG. 1 , a vehicle sash door D according to an embodiment of the present invention includes a center channel  1  and a main channel or a main sash  5  which partitions a window frame together with the center channel  1 . The center channel  1  guides a window glass  6  arranged in one partition of the window frame in such away that the window glass  6  ascends and descends in vertical direction. 
     In this example, the center channel  1  lies midway in the front and rear directions of the vehicle sash door D and extends almost vertically. The upper end of the center channel  1  is jointed at the middle (lateral sash part) of a main sash  5  in the longitudinal directions. This junction (designated by A of  FIG. 1 ) is provided with a protector  3  for securing an exterior design, for a function of holding the window glass  6 , or the like. This embodiment is notable in that a way attaching the protector  3  without any adhesion means such as glue. Omission of such an adhesive as glue would be preferable because it makes free from disadvantages, such as an adhesive stains of peripheral members caused by leaking out or the like, an adhesive deteriorates which would cause the protector to be fallen off or detached. 
     As shown in  FIGS. 2 and 3 , the center channel  1  is a press-formed sheet metal having an H-shaped upper end surface. As a single unit, the center channel  1  includes a pair of branch portions  11  and  12  and a middle vertical-wall portion  15  disposed between the branch portions  11  and  12  so as to connect the both branch portions  11  and  12  therewith. 
     Each branch portion  11  and  12  extends vertically, and the width directions thereof are along the front and rear directions of the vehicle sash door D. The middle vertical-wall portion  15  extends vertically, and the width directions thereof are along the thickness directions of the vehicle sash door D. 
     The middle vertical-wall portion  15  is provided at the upper end with an L-shaped bracket  2  connecting the center channel  1  and the lateral sash part of the main sash  5 . The bracket  2  is welded thereto and integrally includes a vertical portion  22  protruding upward from the upper end of the middle vertical-wall portion  15  and a lateral portion  23  bending perpendicularly from the upper end of the vertical portion  22 . The vertical portion  22  is fixed at a lower part thereof to the middle vertical-wall portion  15  by means such as spot welding. The vertical portion  22  of the bracket  2  is formed therein an engagement hole  222  (described later) for attaching the protector  3 . 
     The protector  3  is made of a specified thermoplastic synthetic resin (plastic) and includes a body  39  having an H-shaped bottom surface as a main body. The body  39  basically includes a pair of branch covering portions  31  and  32  in parallel which covers each branch portion  11  and  12  of the center channel  1  from above, and a middle covering portion  33  connecting midways, in the longitudinal directions thereof, of the branch covering portions  31  and  32  and covering the middle vertical-wall portion  15  of the center channel  1  from above. 
     Each branch covering portion  31  and  32  is provided near each end in the longitudinal directions with a leg portion  311 ,  312 ,  321 , and  322 , respectively, which hangs toward the corresponding branch portion  11  and  12  and is, respectively, inserted into an attachment portion  111 ,  112 ,  121 , and  122  formed near each end of the branch portion  11  and  12 . On the other hand, the middle covering portion  33  is provided at a substantially middle part with a projection  333  as an engaging portion which is inserted into the engagement hole  222  in the vertical portion  22  of the L-shaped bracket  2 . In this embodiment, these projection  333  and vertical portion  22  (provided therein the engagement hole  222 ) constitute a fastening mechanism which mechanically fastens the protector  3  to the center channel  1  by engaging therewith in directions (the front and rear directions in each figure) intersecting the vertical directions in an assemble state of the protector  3  to the center channel  1 . 
     The configuration enables an easy and simple attachment of the protector  3  to the upper end of the center channel  1 . Specifically, the protector  3  is attached (mounted) to the upper end of the center channel  1  by bringing the protector  3  from above closer to the upper end of the center channel  1 , inserting the four leg portions  311 ,  312 ,  321  and  322  of the protector  3  into the attachment portions  111 ,  112 ,  121  and  122 , respectively, and inserting the projection  333  into the engagement hole  222 . In the thus attached protector  3 , each leg portion  311 ,  312 ,  321 , and  322  and the projection  333  fasten the protector  3  to the center channel  1  mechanically in the two directions, thereby firmly preventing the protector  3  from falling off and thus effectively protecting the part around the upper end of the center channel  1  (designated by A of  FIG. 1 ). 
     Now, a second embodiment of the present invention will be described with reference to  FIGS. 4 and 5 . 
     The second embodiment is basically the same as the above embodiment in fixing the protector  3  to the upper end of the center channel  1  having an H-shaped cross section. It is noted that  FIG. 4  shows only one branch portion  11  attached to the outer-plate surface of the vehicle sash door D in  FIG. 1 . Specifically, the protector  3  includes a branch covering portion  35  which is shaped in a lateral bar along the longitudinal directions of the main sash  5 . The branch covering portion  35  in lateral bar shape covers the upper end of the branch portion  11  of the center channel  1  on the side of the door outer-plate surface. The branch covering portion  35  is provided near each end in the longitudinal directions with a downward leg portion  351  and a hook portion  352  as an engaging portion. These portions are integrally made of a specified thermoplastic synthetic resin. 
     A bracket  2  provided to the center channel  1  is formed therein an engagement hollow portion  225  shaped like a notch corresponding to the hook portion  352  of the branch covering portion  35 . In the embodiment of  FIGS. 4 and 5 , the engagement hollow portion  225  is an example of an engagement hollow portion formed in a vertical portion  22  as an engaged portion to be engaged with the hook portion  352 . In the second embodiment, the vertical portion  22  (provided therein the engagement hollow portion  225 ) and the hook portion  352  constitute a fastening mechanism which mechanically fastens the protector  3  to the center channel  1  by engaging therewith in directions (the thickness directions of the vehicle sash door D in each figure) intersecting the vertical directions in an assemble state of the protector  3  to the center channel  1 . 
     In the configuration of  FIG. 4 , the protector  3  is pressed from above against the center channel  1  to fit the leg portion  351  into an opening of the branch portion  11 . As shown in  FIG. 5A , the hook portion  352  on the other-end side of the protector  3  is once deflected in the pressing process. Then, as shown in  FIG. 5B , the hook portion  352  returned to free state to thereby engaging with the engagement hollow portion  225 . As a result, the protector  3  is attached to the upper end of the center channel  1 , in other words, the branch covering portion  35  of the protector  3  covers the upper end of the center channel  1 , thereby protecting the branch portion  11  or the like. Likewise in the embodiment of  FIGS. 4 and 5A  and  5 B, the hook portion  352  is engaged with the engagement hollow portion  225  in directions intersecting the vertical directions to thereby anchor the protector  3  mechanically to the center channel  1 . The specific aspect of the hook portion  352  is not limited to the one elastically deformed in the shape of such a hook, and for example, may be a solid hook-shaped protrusion shown in  FIG. 6 . 
     According to the embodiments described above, the body of the protector  3  having an H-shaped plane is attached to the center channel  1  so as to cover the upper end thereof, thereby protecting the upper end of the center channel  1 . Besides, the fastening mechanism ( 222 ,  333 ,  225 ,  352 ) fastens the protector on the attached protector  3  mechanically to the center channel  1 . Without any adhesion means, this vehicle sash door D in which the protector  3  protects the center channel  1  can be kept securely anchored over a relatively long period of time, though such adhesion means is not precluded from the present invention. Therefore, even if the vehicle sash door D is in a semi-fabricated product, transportations of such the product would be conducted without any damage of the upper-end part of the center channel  1 , provided that the product has the protector  2 . In addition, omission of adhesion means would be preferable because it makes free from disadvantages, such as an adhesive stains peripheral members caused by leaking out or the like, an adhesive deteriorates which would cause the protector to be fallen off or detached. 
     In summary, one aspect of the present invention is a vehicle sash door which includes a main sash, a center channel partitioning a window frame together with the main sash and guiding ascents and descents of a window glass arranged in a partition of the window frame, and a protector. The center channel integrally including: a pair of branch portions facing each other in parallel; a middle vertical-wall portion disposed between the branch portions so as to connect the both branch portions therewith, in such a way that the center channel forms an upper-end surface having an H-shape. A body of the protector integrally including: a pair of branch covering portions corresponding to the branch portions; and a middle covering portion disposed between the branch covering portions so as to connect the both branch covering portions therewith, in such a away that the body has an H-shaped bottom surface which is compatible to cover the upper-end surface of the center channel. The center channel and the protector constitute a fastening mechanism which mechanically fastens the protector to the center channel by engaging therewith in directions intersecting the vertical directions when mounting the protector to the center channel. 
     In a preferred aspect, the fastening mechanism includes an engaged portion arranged on the center channel side and a protrusion which protrudes from a midway part of the middle covering portion in the longitudinal directions thereof and inserted into an engagement hole formed in the engaged portion. 
     In another preferred aspect, the fastening mechanism includes an engaged portion arranged on the center channel side and a hook portion which extends from either one of the branch covering portions and engages with an engagement hollow portion formed in the engaged portion. 
     In still another preferred aspect, the protector further includes a leg portion which protrudes from the bottom of the branch covering portion and is inserted into a hollow portion formed in the upper end of the center channel in an attaching state of the body to the upper end of the center channel. According to this aspect, the leg portion suppresses a displacement in front and rear or right and left directions in collaboration with the fastening mechanism, thereby sustaining the protector in firm structure. 
     In still another preferred aspect, the leg portion is a pin hanging from a lower surface of the branch covering portion. 
     As shown in  FIG. 2 , the pin may be inserted into an attachment portion formed in the branch portion of the center channel, or as shown in  FIG. 4 , the pin may be inserted into a space formed between the middle vertical-wall portion of the center channel and a bracket fixed to the middle vertical-wall portion. 
     Another aspect of the present invention is a center-channel protector for a vehicle sash door which is arranged between a main sash and a center channel having an H-shaped upper-end surface so as to cover the upper end of the center channel. A body of the protector forms an H-shaped bottom surface which is compatible to cover the upper-end surface of the center channel and integrally includes a pair of branch covering portions corresponding to a pair of branch portions constituting the center channel, a middle covering portion disposed between the branch covering portions so as to connect the both branch covering portions therewith, and an engaging portion engages with an engaged portion which is provided with a center channel side in a direction intersecting a vertical direction. The engaging portion constitutes a fastening mechanism by which the protector is mechanically fastened to the center channel in collaboration with the engaged portion. 
     In a preferred protector, the engaging portion is a protrusion jutting out from a midway part of the middle covering portion in the longitudinal directions thereof and inserting into an engagement hole formed in the engaged portion. 
     In another preferred protector, the engaging portion includes a hook portion extending from either one of the branch covering portions and engaging with an engagement hollow portion formed in the engaged portion. 
     In still another preferred protector is further provided with a leg portion which protrudes from the bottom of the branch covering portion and is inserted into a hollow portion formed in the upper end of the center channel in an attaching state of the body to the upper end of the center channel. 
     In still another preferred protector, the leg portion is a pin hanging from a lower surface of the branch covering portion. As shown in  FIG. 2 , the pin may be inserted into an attachment portion formed in the branch portion of the center channel, or as shown in  FIG. 4 , the pin may be inserted into a space formed between the middle vertical-wall portion of the center channel and a bracket fixed to the middle vertical-wall portion. 
     Still another aspect of the present invention is a center channel for a vehicle sash door which includes an upper-end junction portion having an H-shaped upper-end surface and is covered with a protector having an H-shaped plane which is so compatible as to cover the upper-end surface of the center channel, including: a pair of branch portions facing each other in parallel; a middle vertical-wall portion disposed between the branch portions so as to connect the both branch portions therewith; and an engaged portion to which is engaged with an engaging portion formed in the protector in an attaching state of the protector so as to constitute a fastening mechanism by which the protector is fastened on the center channel in collaboration with the engaging portion. 
     In a preferred center channel, the engaged portion is formed therein an engagement hole penetrated by a protrusion as the engaging portion protruding from a midway part in the longitudinal directions of a middle covering portion of the protector. 
     In a preferred center channel, the engaged portion is formed therein an engagement hollow portion engaging with a hook portion as the engaging portion extending from either of branch covering portions of the protector. 
     In a preferred center channel, a bracket fixed to the middle vertical-wall portion is further provided; and the engaged portion is formed on the bracket. 
     In a preferred center channel, the branch portion includes a leg holder for inserting a leg portion formed in a lower part of the protector in an attaching state of the protector to the upper end of the center channel. 
     In a preferred center channel, a bracket fixed to the middle vertical-wall portion is further provided; and the leg holder is a space formed between the middle vertical-wall portion and the bracket. 
     In any above aspect, an engagement hole or an engagement hollow portion may be formed directly in the center channel. Alternatively, it will be appreciated that the protector is provided with a member including an engagement hole or an engagement hollow portion as the engaging portion and the center channel is provided with a protrusion or a hook portion as the engaged portion. 
     Although the present invention has been fully described by way of example with reference to the accompanied drawings, it is to be understood that various changes and modifications will be apparent to those skilled in the art. Therefore, unless otherwise such changes and modifications depart from the scope of the present invention hereinafter defined, they should be construed as being included therein. 
     This application is based on Japanese Patent Application Serial No. 2007-317866, filed in Japan Patent Office on Dec. 10, 2007, the contents of which are hereby incorporated by reference.